CN108908094B - A grinding disc, equipment and method for finishing the rolling surface of cylindrical rollers - Google Patents

Abstract

The invention discloses grinding equipment and a grinding disc kit for finishing a cylindrical roller rolling surface. The host machine comprises a base, a stand column, a cross beam, a sliding table, an upper tray, a lower tray, an axial loading device and a main shaft device. The roller circulation off-disc system comprises a roller collecting mechanism, a roller conveying system, a roller finishing mechanism and a roller feeding mechanism. The abrasive disk package includes a pair of first and second abrasive disks coaxially and oppositely disposed on the front face. The front surface of the first grinding disc comprises a group of linear grooves which are radially distributed on the base surface (right circular cone surface) of the first grinding disc, the front surface of the second grinding disc comprises one or more spiral grooves which are distributed on the base surface (right circular cone surface) of the second grinding disc, and the sum of cone apex angles of the base surfaces of the first grinding disc and the second grinding disc is 360 degrees. The grinding device has the finishing capability of large-batch cylindrical roller rolling surfaces.

Description

A grinding disc, equipment and method for finishing the rolling surface of cylindrical rollers

technical field

The invention relates to a grinding disc set, a grinding device and a grinding method for finishing the rolling surface of a cylindrical roller, and belongs to the technical field of precision machining of bearing rolling bodies.

Background technique

Cylindrical roller bearings are widely used in various types of rotating machinery. As one of the important parts of cylindrical roller bearings, the shape accuracy and dimensional consistency of the rolling surface of the cylindrical roller have an important influence on the performance of the bearing. At this stage, the known machining process of cylindrical roller rolling surface is: blank forming (turning or cold heading or rolling), rough machining (soft grinding rolling surface), heat treatment, semi-finishing (hard grinding rolling surface) and finishing . The main technological method of known cylindrical roller rolling surface finishing is superfinishing.

Superfinishing is a fine-grained whetstone as an abrasive tool. The whetstone exerts low pressure on the workpiece processing surface and performs high-speed micro-amplitude reciprocating vibration and low-speed feed motion along the workpiece processing surface to achieve micro-cutting. . At present, the centerless penetrating superfinishing method is mostly used for the finishing of the rolling surface of cylindrical rollers. The processing part of the equipment is composed of a pair of super-precision guide rollers placed in different directions and one (or a group) of super-precision heads equipped with oil stones. The cylindrical rollers are supported and driven by the guide rollers, and they rotate while rotating. Feed at a low speed along a track that is compatible with the plain line of the rolling surface of the cylindrical roller. The super-precision head presses the oil stone to the rolling surface of the cylindrical roller with a relatively low pressure, and at the same time the oil stone moves along the plain line of the rolling surface of the cylindrical roller. High-speed micro-amplitude reciprocating vibration, finishing the rolling surface of the cylindrical roller. In the centerless through-type superfinishing process, the cylindrical rollers of the same batch pass through the processing area in sequence and undergo superfinishing with oilstone.

In addition, there is a centerless plunge-type superfinishing method. The processing part of the equipment is composed of a pair of superfinishing guide rollers arranged in parallel and a (or a group) superfinishing head equipped with oilstone. The cylindrical roller is placed between the guide rollers Supported and driven to rotate, the super-precision head presses the oilstone to the rolling surface of the cylindrical roller with a low pressure, and at the same time performs a low-speed feed movement and a high-speed micro-amplitude along a track suitable for the rolling surface of the cylindrical roller Reciprocating vibration performs finishing on the rolling surface of cylindrical rollers. In the centerless plunge-type superfinishing process, the cylindrical rollers of the same batch enter the processing area one by one and undergo superfinishing with oilstone.

The above two superfinishing methods of cylindrical roller rolling surface have the following two technical defects: on the one hand, the change of wear state of oil stone and guide roller over time during the processing is not conducive to the improvement of shape accuracy and dimensional accuracy of cylindrical roller rolling surface; On the one hand, since the superfinishing equipment only processes a single (or a few) cylindrical rollers at the same time, the amount of material removed from the rolling surface of the processed cylindrical rollers is hardly affected by the difference in diameter of the rolling surface of the same batch of cylindrical rollers. Therefore, it is difficult to effectively improve the diameter dispersion of the processed cylindrical roller rolling surface by using superfinishing equipment to process the rolling surface of the cylindrical roller. The technical defects in the above two aspects have restricted the improvement of the shape accuracy and dimensional consistency of the processed cylindrical roller rolling surface.

At present, the devices (equipment) and methods involving the finishing of cylindrical roller rolling surfaces also include the following:

Chinese patent bulletin, publication number CN102476350A: discloses a centerless grinding processing device for the outer diameter of cylindrical rollers, comprising two cast iron grinding rollers with a large radius and a small radius, there is a gap between the grinding rollers, and a feeding chute is installed above the gap to feed the material. An upper pressing plate is arranged above the groove, and a pressing weight is installed above the upper pressing plate, and the contact surface between the upper pressing plate and the roller is arc-shaped. The linear speed of the two grinding rollers is different, so that the relative sliding occurs between the cylindrical roller and the grinding roller. Adjusting the vertical and horizontal angles of the small grinding roller can drive the roller to feed along the axis. While the grinding roller drives the cylindrical roller, it also grinds the surface of the roller.

Chinese Patent Gazette, publication number CN204736036U: discloses a processing device for grinding the cylindrical surface of precision cylindrical rollers. It is characterized in that the processing device includes a cylinder, a support frame, a grinding tool base plate, a grinding tool, a driving roller and a base, the two driving rollers are parallel to the symmetrical central plane of the processing device, and the left end of one driving roller is upturned in the vertical plane It intersects with the horizontal plane at an angle of 1-5°, and the right end of the other driving roller tilts downward in the vertical plane and intersects with the horizontal plane at an angle of 1-5°; the surfaces of the two driving rollers are coated with a damping coating to increase the friction coefficient. The grinding tool is fixed on the grinding tool bottom plate, and the processing pressure is applied through the cylinder, which is installed on the support frame, and the support frame and driving roller are installed on the base. During processing, the cylindrical roller is placed on one end of the driving roller. The tangential force generated by the two driving rollers makes the cylindrical roller rotate around the central axis, and the axial force generated makes the cylindrical roller feed along the central axis. The sub-cylindrical surface is processed.

Both of the above two devices use two drive rollers to support and drive the cylindrical rollers forward, and above the direction perpendicular to the advancing direction of the cylindrical rollers, there is an abrasive tool to process the cylindrical surface of the cylindrical rollers. During processing, all cylindrical rollers pass through the processing area in turn. Such devices have the same two technical defects as superfinishing equipment.

Chinese Patent Gazette, Publication No. CN104608046A: discloses a method for ultra-precision machining of the cylindrical surface of a bearing cylindrical roller, which is characterized in that: the cylindrical roller to be processed is ground by a double-plane ultra-precision machining equipment for the outer circle of a cylindrical part; Double-plane cylindrical parts outer circle ultra-precision machining equipment includes: upper grinding disc, lower grinding disc, outer ring gear, eccentric wheel and cage, wherein the rotating shafts of upper grinding disc, lower grinding disc, outer gear ring and eccentric gear are all concentric Placed and driven independently; there are multiple workpiece clamping slots on the disk surface of the disc-shaped cage, and the slots are radially distributed; the rotation axis of the cage is set concentrically with the center of the eccentric wheel, and the center of the cage is concentric There is an offset in the axis of the wheel; the cage is matched with the gear of the outer ring gear, and the cage is driven by the outer ring gear and the eccentric wheel at the same time. Before grinding, place the cylindrical rollers in the slots of the cage, and exert downward pressure on the upper grinding disc; the workpiece is located between the upper grinding disc and the lower grinding disc, and is in contact with the upper and lower grinding discs; the upper grinding disc, the lower grinding disc are driven The grinding disc, the outer ring gear and the eccentric wheel rotate, while the workpiece rolls under the drive of the upper and lower grinding discs, it also makes a cycloidal movement around the upper and lower grinding discs under the drive of the cage.

Chinese Patent Gazette, Publication No. CN103522166A: Discloses a method for machining the outer circle of a cylindrical part based on eccentric pressure on the upper disc. It is characterized in that the processing device of the processing method includes an upper grinding disc, a cage and a lower grinding disc. The upper grinding disc is located above the lower grinding disc, and the cage is located between the upper grinding disc and the lower grinding disc. The rotating shaft of the cage and the rotating shaft of the lower grinding disc are arranged coaxially. The existence of the rotating shaft of the upper grinding disc and the rotating shaft of the cage is determined. Offset. During processing, the loading device eccentrically acts on the cylindrical part through the upper grinding disc, and processes the outer circle of the cylindrical part through the upper grinding disc and the lower grinding disc plane with abrasive materials.

Chinese Patent Bulletin, publication number CN105798765A: discloses a four-plane reciprocating cylindrical roller grinding method and device, characterized in that: a mounting frame driven by a power source is provided in the frame, and the circumferential outer wall of the mounting frame is provided with A plurality of installation grooves for installing the cylindrical rollers; a grinding plate that is slidingly matched with the cylindrical rollers is provided on the frame corresponding to the installation frame. When in use, the cylindrical rollers are installed on the mounting frame, and multiple cylindrical rollers in the grinding plate are simultaneously ground by rotating the mounting frame.

The above three devices (equipment) can process multiple cylindrical parts at the same time, and the cylindrical parts with larger diameters have a larger amount of material removal on the cylindrical surface, which is beneficial to the improvement of dimensional consistency. However, such devices (equipment) do not have mass production capabilities due to the closed nature of their processing units (equipment).

Chinese Patent Gazette, publication numbers CN104493689A and CN104493684A: disclose a double-disc straight-groove grinding disc for a cylindrical part, a grinding device and a grinding method. The device includes a workpiece propulsion device, a workpiece conveying device and a grinding disc device. The grinding disc device includes first and second grinding discs, the two grinding discs rotate relatively, the working surface of the first grinding disc is a plane, and a group of radial straight grooves are arranged on the surface of the second grinding disc opposite to the first grinding disc The two sides of the straight groove are the working surface of the second grinding disc. The cross-sectional profile of the working surface of the second grinding disc is arc-shaped or V-shaped or V-shaped with arc. The angle between the contact point of the groove or the normal plane at the midpoint of the contact arc and the reference plane of the straight groove is in the range of 30° to 60°; One end of the center is a propulsion port, and the other end of the straight groove is a discharge port. The workpiece propulsion device is arranged in the central through hole of the second grinding disc, including the main body and a plurality of pushing mechanisms and storage materials installed on it. groove.

When using this equipment to grind the cylindrical surface of cylindrical rollers, on the one hand, the cylindrical rollers can circulate inside and outside the grinding disc, which is capable of mass production; on the other hand, in the grinding processing area, the equipment can simultaneously process a large number of cylindrical rollers The comparative processing realizes the removal of more material on the cylindrical surface of the cylindrical roller with a larger diameter, which is beneficial to the improvement of the dimensional consistency of the cylindrical roller surface.

However, for the existing double-disk straight-groove grinding disc, the number of straight grooves that can be provided on the second grinding disc is relatively small due to the restriction of the diameter of the central through hole of the second grinding disc. Improvement plan: the working surface of the first grinding disc is a conical surface, and a group of radial straight grooves are arranged on the disc surface of the second grinding disc opposite to the working surface (conical surface) of the first grinding disc. On the one hand, under the condition that the outer diameter of the second grinding disc and the length of the straight groove are constant, the diameter of the central through hole can be increased by adjusting the apex angle of the conical surface of the first grinding disc, thereby increasing the diameter of the second grinding disc. Number of straight grooves. As the number of straight grooves on the second grinding disc increases, the number of cylindrical rollers participating in the grinding process increases at the same time, which will help improve the grinding process efficiency and dimensional consistency of the cylindrical surface of the cylindrical roller. On the other hand, compared with the flat grinding disc, the conical grinding disc has the advantage of self-centering, which is more conducive to the improvement of the dimensional consistency of the cylindrical surface of the cylindrical roller.

Moreover, when using the existing double-disc straight-groove grinding disc to grind cylindrical rollers, the workpiece propulsion device must continuously apply axial thrust to the processed cylindrical rollers to maintain the axial feed of the processed cylindrical rollers along the straight grooves. , the requirement for the axial propulsion capacity of the workpiece propulsion device is relatively high. Improvement plan: design the planar working surface of the first grinding disc as a spiral groove working surface, the workpiece pushing device only needs to push the processed cylindrical roller to the intersection of the straight groove and the spiral groove, and the processed cylindrical roller is subsequently The axial feed can be completed by the screw advance of the spiral groove working surface.

Contents of the invention

Aiming at the problems existing in the prior art, the present invention provides a grinding disc set, grinding equipment and grinding method for finishing the rolling surface of cylindrical rollers. The surface finishing ability can realize more removal of high-point material and less removal of low-point material on the rolling surface of cylindrical rollers, more material removal on the rolling surface of cylindrical rollers with larger diameters, and more material removal on the rolling surfaces of cylindrical rollers with smaller diameters Less removal can improve the shape accuracy and dimensional consistency of the rolling surface of the cylindrical roller, improve the processing efficiency of the rolling surface of the cylindrical roller, and reduce the processing cost.

In order to solve the above technical problems, the present invention proposes a grinding disc set for finishing the rolling surface of cylindrical rollers, comprising a pair of coaxial first grinding disc and second grinding disc, the front of the first grinding disc and the second grinding disc The front of the grinding disc is arranged oppositely;

The front surface of the first grinding disc includes a group of radially distributed linear grooves and a transition surface connecting adjacent linear grooves; the surface of the linear grooves includes a surface that is in contact with the rolling surface of the processed cylindrical roller during grinding. The linear groove working surface and the non-working surface that does not contact the rolling surface of the processed cylindrical roller; the linear groove working surface is on the linear groove scanning surface, and the linear groove scanning surface is equal-section scanning surface; the scanning path of the linear groove scanning surface is a straight line, and the generatrix of the linear groove scanning surface is in the linear groove method section; in the linear groove method section, the linear groove scanning surface The normal cross-sectional profile is a circular arc with a radius of curvature equal to that of the rolling surface of the processed cylindrical roller; the scanning path of the linear groove scanning surface passes through the center of curvature of the normal cross-sectional profile, and the scanning path is a straight line Groove baseline; all the linear groove baselines are distributed on a right conical surface, the right conical surface is the base surface of the first grinding disc, and the axis of the base surface of the first grinding disc is the axis of the first grinding disc, so The apex angle of the base surface of the first grinding disc is 2α;

The baseline of the linear groove is within the axial section of the first grinding disc, and the axial section of the first grinding disc including the baseline of the linear groove is the central plane of the working surface of the linear groove; during grinding, the processed cylindrical roller The axis of the cylindrical roller is in the center plane of the linear groove working surface, the rolling surface of the processed cylindrical roller is in surface contact with the linear groove working surface, and the axis of the processed cylindrical roller coincides with the linear groove baseline ;

The front surface of the second grinding disc includes one or more spiral grooves and a transition surface connecting adjacent spiral grooves; the surface of the spiral groove includes a spiral groove working surface that contacts the processed cylindrical roller during grinding and a working surface that is in contact with the processed cylindrical roller. The non-working surface that does not contact the cylindrical roller is processed; the spiral groove working surface includes the working surface that is in contact with the rolling surface of the processed cylindrical roller during grinding, and the rounding that occurs with the end surface of the processed cylindrical roller Working surface two in contact; said working surface one and working surface two are on scanning surface one and scanning surface two respectively, and said scanning surface one and scanning surface two are equal-section scanning surfaces; Under the constraint of the working surface of the groove, the rolling surface and end face rounding of the cylindrical roller to be processed are respectively tangent to the first working surface and the second working surface; the scanning paths of the first scanning surface and the second scanning surface are both The midpoint of the projection of the rolling surface of the processed cylindrical roller on its axis and the right conical helix distributed on a right conical surface; the right conical surface is the base surface of the second grinding disc, and the second The axis of the grinding disc base surface is the second grinding disc axis; the generatrix (i.e. scanning profile) of the scanning surface one and the scanning surface two is all in the second grinding disc axis section; the apex of the second grinding disc base surface The angle is 2β, and 2α+2β=360°;

When 2α=2β=180°, the axis of the first grinding disc is perpendicular to the base surface of the first grinding disc, the axis of the second grinding disc is perpendicular to the base surface of the second grinding disc, and the straight line There is also a situation where the linear groove baseline is not in the axial section of the first grinding disc when the groove baseline is outside the axial section of the first grinding disc; when the linear groove baseline is not in the first grinding disc In the axial section, the central plane of the working surface of the linear groove includes the baseline of the linear groove and is parallel to the axis of the first grinding disc.

Further, the inlets of the linear grooves of the first grinding disc are located on the outer edge of the first grinding disc, and the outlets of the linear grooves of the first grinding disc are located on the inner edge of the first grinding disc ; or the inlets of the linear grooves of the first grinding disc are located at the inner edge of the first grinding disc, and the outlets of the linear grooves of the first grinding disc are located at the outer edge of the first grinding disc.

When using the free abrasive grinding method, by selecting the material of the linear groove working surface of the first grinding disc and the material of the spiral groove working surface of the second grinding disc, the second The friction pair composed of the material of the spiral groove working surface of the grinding disc and the material of the processed cylindrical roller produces a sliding friction driving torque that is greater than that of the linear groove of the first grinding disc when the processed cylindrical roller rotates around its own axis. The friction pair composed of the material of the surface and the material of the processed cylindrical roller produces a sliding frictional resistance moment against the rotation of the processed cylindrical roller around its own axis, thereby driving the processed cylindrical roller to continuously rotate around its own axis.

During grinding, under the constraints of the linear groove working surface of the first grinding disc, the rolling surface of the processed cylindrical roller makes line contact with the working surface of the spiral groove of the second grinding disc, and the The rounded corner of one end surface of the processed cylindrical roller is in line contact or point contact with the second working surface of the spiral groove; the processed cylindrical roller only has the degree of freedom of rotary motion around its own axis.

During grinding, corresponding to each intersection of the spiral groove of the second grinding disc and the linear groove of the first grinding disc, in the linear groove of the first grinding disc along the linear groove baseline Distribute a cylindrical roller to be processed. Definition: Corresponding to each intersection, the area enclosed by the linear groove working surface of the first grinding disc and the spiral groove working surface of the second grinding disc is the grinding processing area.

In the present invention, a grinding device for finishing the rolling surface of cylindrical rollers is also proposed, including a main machine, a roller circulation disc system and the grinding disc set in the present invention;

The main machine includes a base, a column, a beam, a slide table, an upper tray, a lower tray, an axial loading device and a spindle device;

The base, columns and beams form the frame of the host;

The first grinding disc of the grinding disc set is connected to the lower tray, and the second grinding disc of the grinding disc set is connected to the upper tray;

The slide table is connected to the beam through the axial loading device, and the column can also serve as a guide member to provide a guide for the slide table to move linearly along the axis of the second grinding disc; Driven by the axial loading device and constrained by the column or other guide components, linearly move along the axis of the second grinding disc;

The spindle device is used to drive the first grinding disc or the second grinding disc to rotate around its axis;

The roller circulation system outside the disc includes a roller collection mechanism, a roller conveying system, a roller sorting mechanism and a roller feeding mechanism;

The roller collection mechanism is arranged at the outlet of each linear groove of the first grinding disc, and is used to collect the processed cylindrical rollers leaving the grinding processing area from the outlet of each linear groove;

The roller conveying system is used to convey the processed cylindrical roller from the roller collecting mechanism to the roller feeding mechanism;

The roller finishing mechanism is arranged at the front end of the roller feeding mechanism, and is used to adjust the axis of the processed cylindrical roller to the direction required by the roller feeding mechanism;

During the grinding process, there are two modes of rotation of the grinding disc set; mode 1, the first grinding disc rotates around its axis, and the second grinding disc does not rotate; mode 2, the first grinding disc does not rotate, the second grinding disc rotates around its axis;

There are three configurations of the main machine: main machine type one is used for the grinding disc set to rotate in mode one; main machine type two is used for the grinding disc set to rotate in mode two; main machine type three is suitable for both the The grinding disc set is rotated in the first mode, and it is also suitable for the grinding disc set to be rotated in the mode two;

Corresponding to host type 1:

The main shaft device is installed on the base, and the first grinding disc is driven to rotate around its axis through the lower tray connected to it; the upper tray is connected to the slide table;

During the grinding process, the first grinding disc rotates around its axis; the slide table, together with the upper tray connected to it, and the second grinding disc connected to the upper tray, are bounded by the column or other guide components. The axis of the second grinding disc approaches the first grinding disc, and applies working pressure to the processed cylindrical rollers distributed in each linear groove of the first grinding disc;

Each spiral groove of the second grinding disc is equipped with a roller feeding mechanism, and the roller feeding mechanism is respectively installed at the entrance of each spiral groove of the second grinding disc for When any linear groove entrance of the first grinding disc intersects with the spiral groove entrance, a processed cylindrical roller is pushed into the linear groove entrance;

Corresponding to host machine type 2:

The main shaft device is installed on the slide table, and the second grinding disc is driven to rotate around its axis through the upper tray connected to it; the lower tray is installed on the base;

During the grinding process, the second grinding disc rotates around its axis; the slide table is constrained by the column or other guide components, together with the main shaft device on it, the upper tray connected with the main shaft device, and the The second grinding disc connected to the above tray approaches the first grinding disc along the axis of the second grinding disc, and applies work to the processed cylindrical rollers distributed in each linear groove of the first grinding disc. pressure;

Each linear groove of the first grinding disc is equipped with a roller feeding mechanism, and the roller feeding mechanism is respectively installed at the entrance of each linear groove of the first grinding disc for When any spiral groove entrance of the second grinding disc intersects with the linear groove entrance, a processed cylindrical roller is pushed into the linear groove entrance;

Corresponding to the main machine type three:

There are two sets of spindle devices, one of which is installed on the base, the first grinding disc is driven to rotate around its axis through the lower tray connected to it, and the other set of spindle devices is installed on the slide table above, the second grinding disc is driven to rotate around its axis through the upper tray connected to it; the two sets of spindle devices are equipped with locking mechanisms, and only the first grinding disc and the second grinding disc are allowed to rotate at the same time. One rotation, while the other grinding disc is in a circumferentially locked state;

When the grinding disc set of the grinding equipment rotates in mode 1 for grinding processing, the relative movement of the first grinding disc and the second grinding disc is the same as that of the main mechanism type 1; the installation position of the roller feeding mechanism and The effect is the same as that of the main machine type one;

When the grinding disc set of the grinding equipment rotates in mode 2 for grinding, the relative movement of the first grinding disc and the second grinding disc is the same as that of the main mechanism type 2; the installation position and the The function is the same as that of the main machine type two;

During grinding, the cylindrical roller to be processed enters the grinding processing area from the entrance of each linear groove of the first grinding disc, leaves the grinding processing area from the exit of each linear groove of the first grinding disc, and then enters the grinding processing area from the first grinding disc. The outlets of each linear groove of a grinding disc enter the inlets of each linear groove of the first grinding disc through the roller collecting mechanism, roller conveying system, roller finishing mechanism and roller feeding mechanism in sequence, Form the cycle of linear feeding of processed cylindrical rollers along the base line of the linear groove between the first grinding disc and the second grinding disc and collecting, conveying, sorting and feeding through the roller circulation disc system; the cycle The path outside the grinding disc set is from each linear groove exit of the first grinding disc, passing through the roller collecting mechanism, roller conveying system, roller sorting mechanism and roller feeding mechanism in sequence , entering the entrances of each linear groove of the first grinding disc, defining the path as the outer path of the roller circulation disc.

Further, during grinding, the base surface of the first grinding disc coincides with the base surface of the second grinding disc; the transition surface connecting adjacent linear grooves on the front side of the first grinding disc and the second grinding disc There are gaps between transition surfaces connecting adjacent spiral grooves on the front face.

In the present invention, a grinding method for finishing the rolling surface of cylindrical rollers using the grinding equipment of the present invention is proposed at the same time. The grinding method comprises the following steps:

Step 1. The second grinding disc approaches the first grinding disc along its axis, to the space of each grinding processing area surrounded by the linear groove working surface of the first grinding disc and the spiral groove working surface of the second grinding disc Can and can only accommodate one processed cylindrical roller;

Step 2: Corresponding to the rotation method 1 of the grinding disc set, the first grinding disc rotates around its axis relative to the second grinding disc at a low speed of 1-10rpm; corresponding to the rotation mode 2 of the grinding disc set, the second grinding disc rotates around its axis relative to the The first grinding disc rotates at a low speed of 1 to 10 rpm; the rotation directions of the first grinding disc and the second grinding disc are determined according to the direction of rotation of the spiral groove of the second grinding disc and the positions of the entrance and exit of the spiral groove;

Step 3, start the roller conveying system, the roller finishing mechanism and the roller feeding mechanism; adjust the feeding speed of the roller feeding mechanism to match the relative rotation speed of the first grinding disc and the second grinding disc, so as to Ensure that when the entrances of the spiral grooves of the second grinding disc intersect with the entrances of the linear grooves of the first grinding disc, under the action of the roller feeding mechanism, a cylindrical roller to be processed will enter the entrance of the spiral grooves and the straight line. At the intersection of each entrance of the groove entrance; adjust the conveying speed of the roller conveying system and the finishing speed of the roller finishing mechanism to match the feeding speed of the roller feeding mechanism, so that the processed cylindrical roller passes through the roller The conveying system and the roller finishing mechanism, under the action of the roller feeding mechanism, enter each entrance intersection in time; the processed cylindrical rollers entering the entrance intersection are then due to the relative rotation of the first grinding disc and the second grinding disc. The spiral groove working surface at the entrance of the spiral groove of the second grinding disc enters the grinding processing area under the pushing action of the spiral groove working surface; the processed cylindrical roller entering the grinding processing area moves along the The base line of the linear groove of the first grinding disc makes a linear feed motion, runs through the linear groove, and leaves the grinding process from the intersection of the outlets of the spiral grooves of the second grinding disc and the outlets of the linear grooves of the first grinding disc. area; the processed cylindrical rollers leaving the grinding processing area pass through the roller collection mechanism, roller conveying system and roller sorting mechanism. After the original order is disrupted, they enter the entrance intersection in turn under the action of the roller feeding mechanism. so as to establish the linear feed of the processed cylindrical roller along the baseline of the linear groove between the first grinding disc and the second grinding disc and the cycle of collecting, conveying, sorting and feeding through the roller circulation disc external system;

Step 4. Adjust the relative rotational speed of the first grinding disc and the second grinding disc to the relative working rotational speed of 15-60rpm, and adjust the feeding speed of the roller feeding mechanism to the working feeding speed so that it is consistent with the first grinding disc and the second grinding disc. The relative working rotation speed of the second grinding disc is matched, and the conveying speed of the roller conveying system and the finishing speed of the roller sorting mechanism are adjusted, so that the roller collecting mechanism, the roller conveying system, and the rollers in the above-mentioned roller circulation disc system The stocks of the processed cylindrical rollers in the sorting mechanism and the roller feeding mechanism are matched, and the circulation is smooth and orderly;

Step 5, filling the grinding area with grinding fluid;

Step 6: The second grinding disc is further approached to the first grinding disc along its axis, so that the rolling surface of the processed cylindrical roller in the grinding processing area is in surface contact with the linear groove working surface of the first grinding disc and with the first grinding disc. As soon as the working surface of the spiral groove of the second grinding disc comes into line contact, an initial working pressure of 0.5-2N is applied to each processed cylindrical roller distributed in the grinding processing area; Driven by the friction of the working surface of the spiral groove of the second grinding disc, the roller performs continuous rotation around its own axis; at the same time, the processed cylindrical roller moves along the straight line of the first grinding disc under the continuous pushing of the working surface of the spiral groove. The base line of the groove makes a linear feed movement; the rolling surface of the processed cylindrical roller begins to undergo the grinding process of the working surface of the linear groove of the first grinding disc and the working surface of the spiral groove of the second grinding disc;

Step 7. With the stable operation of the grinding process, gradually increase the working pressure on the processed cylindrical rollers distributed in the grinding processing area to the average normal working pressure of 2-50N for each processed cylindrical roller; the processed cylindrical rollers Maintain the contact relationship with the linear groove working surface of the first grinding disc and the spiral groove working surface of the second grinding disc in step 6, the continuous rotational movement around its own axis and the linear feed movement along the linear groove baseline, and its rolling The surface continues to be subjected to the grinding process of the linear groove working surface of the first grinding disc and the working surface 1 of the spiral groove of the second grinding disc;

Step 8. After a period of grinding, conduct sampling inspection on the processed cylindrical roller; when the surface quality, shape accuracy and dimensional consistency of the rolling surface of the processed cylindrical roller have not met the technical requirements, continue this The first step is grinding; when the surface quality, shape accuracy and dimensional consistency of the rolling surface of the processed cylindrical roller meet the technical requirements, go to step nine;

Step 9. Gradually reduce the working pressure and finally to zero; stop the operation of the roller conveying system, roller finishing mechanism and roller feeding mechanism, adjust the relative speed of the first grinding disc and the second grinding disc to zero; stop grinding The processing area is filled with grinding fluid; the second grinding disc returns to the non-working position along its axis; the grinding process ends.

In the grinding equipment for finishing the cylindrical roller rolling surface of the present invention, a magnetic structure may also be provided inside the second grinding disc of the grinding disc set under the following two situations;

Situation 1: When the processed cylindrical roller made of ferromagnetic material is ground by the consolidated abrasive grinding method, a magnetic structure is arranged inside the second grinding disc, and the magnetic field strength of the magnetic structure is adjusted so that the second grinding disc The spiral groove of the working face of the ferromagnetic material to be processed produces a sliding friction driving torque greater than that of the first grinding disc's linear groove working face of the ferromagnetic material to be processed. The sliding friction resistance torque generated by the rotation of the cylindrical roller around its own axis drives the processed cylindrical roller made of ferromagnetic material to continuously rotate around its own axis;

Situation 2: When using the free abrasive grinding method to grind the processed cylindrical roller made of ferromagnetic material, the second grinding disc has a built-in magnetic structure to increase the working surface of the spiral groove of the second grinding disc on the ferromagnetic material. The sliding friction driving torque generated by the processed cylindrical roller of ferromagnetic material rotating around its own axis makes the continuous rotation of the processed cylindrical roller of ferromagnetic material around its own axis not affected by the linear groove working surface of the first grinding disc. The matching constraints of the material of the second grinding disc and the material of the spiral groove working surface.

For grinding the rolling surface of the cylindrical roller when the magnetic structure is set inside the second grinding disc of the grinding disc set in the grinding device of the present invention, the roller circulation system outside the disc in the grinding device of the present invention also includes rollers The sub-demagnetization device, the roller demagnetization device is arranged in the roller conveying system in the outer circulation path of the roller disc or before the roller conveying system, and is used to magnetize the ferromagnetic material by the magnetic field of the built-in magnetic structure of the second grinding disc The demagnetization of processed cylindrical rollers is different from the grinding method described above only:

In step 3, start the roller demagnetization device at the same time;

In step 6, before applying the initial working pressure to the processed cylindrical rollers distributed in the grinding processing area, the magnetic structure enters the working state; while applying the initial working pressure to the processed cylindrical rollers distributed in the grinding processing area , adjust the magnetic field strength of the magnetic structure, so that the sliding friction driving torque generated by the spiral groove working surface of the second grinding disc to be processed when the cylindrical roller rotates around its own axis is greater than that of the linear groove working surface of the first grinding disc to be processed. The sliding friction resistance moment generated by the roller rotating around its own axis drives the processed cylindrical roller to make continuous rotational motion around its own axis;

In step nine, after adjusting the relative rotational speed of the first grinding disc and the second grinding disc to zero, the magnetic structure is switched to a non-working state, and the roller demagnetizing device is stopped.

Before the first grinding disc and the second grinding disc are used for the first time, the linear groove working surface of the first grinding disc and the spiral groove working surface of the second grinding disc are processed by using the processed cylindrical rollers with the same geometric parameters Running-in; the running-in method is the same as the grinding method of the processed cylindrical roller; for step 8, the processed cylindrical roller participating in the running-in is randomly inspected, when the surface quality, shape accuracy and When the dimensional consistency meets the technical requirements, the running-in process enters step nine, and the running-in ends; otherwise, continue to step eight.

Compared with prior art, the beneficial effect of the present invention is:

During the grinding process, in each grinding processing area enclosed by the linear groove working surface of the first grinding disc and the spiral groove working surface of the second grinding disc, the rolling surface of the processed cylindrical roller is respectively in contact with the first grinding surface. The working surface of the linear groove of the disc is in surface contact and line contact with the working surface of the spiral groove of the second grinding disc. Driven by the friction of the working surface of the spiral groove of the second grinding disc, the processed cylindrical roller rotates around its own axis. The rolling surface of the cylindrical roller to be processed slides relative to the working surface of the linear groove of the first grinding disc, thereby realizing the grinding process of the rolling surface of the cylindrical roller to be processed. The material removal of the rolling surface is directly related to the contact stress between the rolling surface and the linear groove working surface, when the rolling surface of the larger diameter processed cylindrical roller or the high point of the rolling surface of the processed cylindrical roller is working When the surface is in contact, the contact stress between the rolling surface and the linear groove working surface is large, and the material removal amount of the rolling surface at the contact point is large; when the rolling surface of the processed cylindrical roller with a smaller diameter or the When the low point of the rolling surface is in contact with the working surface of the linear groove, the contact stress between the rolling surface and the working surface of the linear groove is small, and the material removal amount of the rolling surface at the contact point is small. Therefore, it is possible to remove more high-point material and less low-point material on the rolling surface of the cylindrical roller, remove more material on the rolling surface of the larger-diameter cylindrical roller, and less material on the rolling surface of the smaller-diameter cylindrical roller remove.

Due to the open design of the linear groove of the first grinding disc and the spiral groove of the second grinding disc, there is a straight line between the first grinding disc and the second grinding disc along the base line of the linear groove of the processed cylindrical roller in the grinding process. The cycle of feeding and collecting, conveying, sorting, and feeding through the roller circulation system, and the original order of the processed cylindrical rollers will be disrupted when passing through the roller circulation system.

On the one hand, the open design of the linear groove of the first grinding disc and the spiral groove of the second grinding disc is very suitable for finishing the rolling surface of large batches of cylindrical rollers; The disturbed order of the processed cylindrical rollers makes the above-mentioned characteristics "more removal of high-point material and less removal of low-point material on the rolling surface of cylindrical rollers, and more removal of material on the rolling surface of cylindrical rollers with larger diameters, diameter Less material removal on the rolling surface of smaller cylindrical rollers can spread to the entire processing batch, thereby improving the shape accuracy and dimensional consistency of the rolling surfaces of the entire batch of cylindrical rollers; on the other hand, the first grinding There are tens to hundreds of intersections between the linear groove of the disc and the spiral groove of the second grinding disc, that is, tens to hundreds of processed cylindrical rollers participate in the grinding at the same time, so that the cylindrical roller can be improved. Improve the processing efficiency of the rolling surface of the sub, and reduce the processing cost.

And because of the tapered surface design of the base surface of the first grinding disc, especially when the linear groove entrance is arranged on the outer edge of the first grinding disc, more and longer linear grooves can be designed on the front surface of the first grinding disc, That is, more cylindrical rollers to be processed will participate in grinding at the same time.

Further, due to the design of the spiral groove working surface of the second grinding disc, the linear feed motion of the processed cylindrical roller along the linear groove base line of the first grinding disc can be completed by means of the helical push of the spiral groove working surface, and the roller feeds The axial pushing capacity requirements of the feeding mechanism are relatively low.

Description of drawings

Fig. 1 is a schematic diagram of the grinding disc set of the present invention;

Fig. 2 (a) is a schematic diagram of the linear groove structure of the first grinding disc of the present invention and a schematic diagram of the contact relationship between the rolling surface of the processed cylindrical roller and the working surface of the linear groove;

Figure 2(b) is a schematic diagram of the three-dimensional structure of the processed cylindrical roller;

Fig. 2 (c) is the scanning profile schematic diagram of the linear groove scanning surface of the first grinding disc of the present invention;

Fig. 3 is a schematic diagram of the base surface of the first grinding disc of the present invention;

Fig. 4 (a) is the structural representation of the spiral groove of the second grinding disc of the present invention;

Figure 4 (b) is a schematic diagram of the contact relationship between the processed cylindrical roller and the spiral groove working surface of the present invention;

Fig. 4 (c) is the characteristic schematic diagram of positive conical helix of the present invention;

Fig. 5 (a) is a schematic diagram of the restricted contact and motion freedom of the processed cylindrical roller and the grinding disc set under the grinding processing state of the present invention;

Figure 5 (b) is an enlarged view of part E in Figure 5 (a);

Fig. 6 (a) is a schematic diagram 1 of the contact between the processed cylindrical roller and the spiral groove working surface of the present invention;

Fig. 6 (b) is the second schematic diagram of the contact between the processed cylindrical roller and the spiral groove working surface of the present invention;

Fig. 7 is a schematic diagram of the distribution of processed cylindrical rollers in linear grooves and spiral grooves in the grinding state of the present invention;

Fig. 8 (a) is the schematic diagram of the main mechanism configuration of the grinding equipment of the present invention;

Fig. 8 (b) is the schematic diagram of the second structure of the main machine configuration of the grinding equipment of the present invention;

Fig. 9 (a) is a schematic diagram of the processed cylindrical roller circulation of the main machine type one of the grinding equipment of the present invention;

Fig. 9 (b) is a schematic diagram of the processed cylindrical roller circulation of the second main mechanism of the grinding equipment of the present invention;

Fig. 10(a) is a schematic diagram of the circulation of the main machine configuration of the present invention-processed cylindrical rollers inside and outside the grinding disc set;

Fig. 10(b) is a schematic diagram of the main machine configuration of the present invention-the processed cylindrical roller enters the grinding processing area under the pushing action of the spiral groove working surface at the entrance of the spiral groove;

Fig. 11(a) is a schematic diagram of the circulation of the machined cylindrical roller of the main machine configuration 2 inside and outside the grinding disc set;

Fig. 11(b) is a schematic diagram of the main machine configuration 2 of the present invention where the processed cylindrical roller enters the grinding processing area under the pushing action of the spiral groove working surface at the entrance of the spiral groove.

In the picture:

11 - base;

12-column;

13 - beam;

14- slide table;

15-upper tray;

16- lower tray;

17 - Axial loading device;

18-spindle device;

2-grinding disc set;

21 - the first grinding disc;

211 - the front of the first grinding disc;

2111-straight groove;

21111-straight groove working face;

21112-central plane;

21113-Straight line groove scanning surface;

211131 - French section profile;

21114-straight groove method section;

21116 - Linear Groove Baseline;

21118 - straight groove entrance;

21119 - Straight line groove outlet;

2112 - the transition surface connecting adjacent linear grooves;

212-the installation surface of the first grinding disc;

213-the axis of the first grinding disc;

214-the base surface of the first grinding disc;

2141-Axial cross-section of the base surface of the first grinding disc;

215-the shaft section of the first grinding disc;

22 - the second grinding disc;

221 - the front of the second grinding disc;

2211-spiral groove;

22111-spiral groove face;

221111-working face one;

221112-working face two;

221121-scanning surface one;

221122-scanning surface two;

221131-shaft section profile one;

221132-shaft section profile II;

22116 - Spiral Groove Baseline;

221161-positive conic equiangular helix;

221162-Conic non-cone helix;

22117 - Tangent to baseline of spiral groove;

22118 - spiral groove entrance;

22119 - spiral groove outlet;

2212 - the transition surface connecting adjacent spiral grooves;

222-the second grinding disc mounting surface;

223-second grinding disc axis;

224-the base surface of the second grinding disc;

2241-Axial cross-section of the base surface of the second grinding disc;

2242-The base surface of the second grinding disc is plain line;

2243-Tangent line of the base surface of the second grinding disc;

225-the second grinding disc shaft section;

3- Cylindrical rollers to be processed;

31 - axis;

32 - rolling surface;

322 - contact line one;

323 - shaft cross section of the rolling surface;

331-end rounding;

3312-contact line two;

4-Roller circulating disk system;

41 - roller collection mechanism;

43 - roller conveyor system;

44-Roller finishing mechanism;

45-Roller feeding mechanism;

451-Roller feeding channel;

4511-Roller feeding channel positioning surface;

45211-Docking spiral groove working face one;

45212-Docking spiral groove working face two;

A, B- the far end points of the normal cross-sectional profile of the linear groove scanning surface on both sides of the central plane;

C, D-The two ends of the rolling surface of the processed cylindrical roller mapped on its axis;

G - during grinding, the intersection of the linear groove of the first grinding disc and the spiral groove of the second grinding disc;

N - the contact point between the rounded corner of one end face of the processed cylindrical roller and the second working surface of the spiral groove of the second grinding disc;

P-moving point on the element line of the base plane of the second grinding disc;

Q-The midpoint of the projection of the rolling surface of the processed cylindrical roller on its axis;

α-the cone top half angle of the base surface of the first grinding disc;

β-cone top half angle of the base surface of the second grinding disc;

θ ₁ , θ ₂ - the central angle of the normal section profile of the linear groove scanning surface at the far end points on both sides of the central plane;

λ-helix angle.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The embodiments described by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. In addition, the dimensions, materials, shapes, and relative arrangements of components described in the following embodiments are not intended to limit the scope of the present invention unless otherwise specified.

The present invention proposes a set of grinding discs for finishing the rolling surface of cylindrical rollers, comprising a pair of coaxial first grinding discs 21 and second grinding discs 22, the front side of the first grinding disc 211 and the front side of the second grinding disc 221 are arranged oppositely, as shown in FIG. 1 , reference numeral 213 is the axis of the first grinding disc, and reference numeral 223 is the axis of the second grinding disc.

The first grinding disc mounting surface 212 and the second grinding disc mounting surface 222 face away from the first grinding disc front 211 and the second grinding disc front 221 respectively, and the first grinding disc 21 and the second grinding disc 22 pass through their respective The mounting surface of the grinding machine is connected to the corresponding mounting base on the grinding equipment.

The front surface 211 of the first grinding disc includes a group (not less than 3) of radially distributed linear grooves 2111 and a transition surface 2112 connecting adjacent linear grooves.

As shown in Figure 2(a), the surface of the linear groove 2111 includes the linear groove working surface 21111 that is in contact with the rolling surface 32 of the processed cylindrical roller 3 during grinding and the rolling surface 21111 with the processed cylindrical roller. The non-working surface on which surface 32 does not come into contact. Figure 2(b) shows the three-dimensional structure of the processed cylindrical roller 3.

As shown in Figure 2 (a), the linear groove working surface 21111 is on the linear groove scanning surface 21113, and the linear groove scanning surface 21113 is an equal-section scanning surface; the linear groove scanning surface 21113 The scanning path is a straight line, and the generatrix of the linear groove scanning surface 21113 (ie, the scanning profile) is within the normal section 21114 of the linear groove. The linear groove normal section 21114 is a plane perpendicular to the scanning path (straight line) of the linear groove 21111 .

As shown in Figure 2(a) and Figure 2(c), in the normal section 21114 of the linear groove, the normal section profile 211131 of the scanning surface 21113 of the linear groove (that is, in the normal section 21114 of the linear groove The scanning profile) is a circular arc whose radius of curvature is equal to the radius of curvature of the rolling surface 32 of the processed cylindrical roller, and the scanning path of the linear groove scanning surface 21113 passes through the center of curvature of the normal section profile 211131, defined as: The scan path (straight line) is the straight groove baseline 21116 .

The specific meaning that the linear groove scanning surface 21113 is a constant section scanning surface is: in the linear groove normal section 21114 at different positions of the linear groove baseline 21116, the normal section of the linear groove scanning surface 21113 The profile 211131 remains the same.

It can be understood that the relationship between the linear groove scanning surface 21113 and the linear groove working surface 21111 in the present invention is: the linear groove scanning surface 21113 determines the shape, position and boundary of the linear groove working surface 21111, and the linear groove scanning surface 21113 determines the shape, position and boundary of the linear groove working surface 21111, and the linear groove scanning surface The groove scanning surface 21113 is a continuous surface; the linear groove working surface 21111 and the corresponding linear groove scanning surface 21113 have the same shape, position and boundary, without affecting the contact between the processed cylindrical roller 3 and the linear groove working surface 21111 On the premise of not affecting the grinding uniformity of the rolling surface 32 of the processed cylindrical roller, the linear groove working surface 21111 can be discontinuous.

As shown in Figure 3, all the linear groove base lines 21116 are distributed on a right conical surface, defined: the right conical surface is the first grinding disc base surface 214, and the axis of the first grinding disc base surface 214 is First grinding disc axis 213 .

Definition: the apex angle 2α of the first grinding disc base surface 214 is that the axial section section line 2141 of the first grinding disc base surface in the first grinding disc axial section 215 is located on the entity side of the first grinding disc 21 , and the reference symbol α is the half-angle of the apex of the base surface 214 of the first grinding disc.

The linear groove baseline 21116 is within the first grinding disc axial section 215, and it is defined that the first grinding disc axial section 215 including the linear groove baseline 21116 is the central plane 21112 of the linear groove working surface 21111 . As shown in Figure 2(c), in the normal section 21114 of the linear groove, the normal section profile 211131 of the scanning surface 21113 of the linear groove where the working surface 21111 of the linear groove is located is on both sides of the central plane 21112 Central angle θ ₁ ≤90° and θ ₂ ≤90° between the distal points A and B.

During grinding, the axis 31 of the processed cylindrical roller is in the central plane 21112 of the linear groove working surface, and the rolling surface 32 of the processed cylindrical roller is in surface contact with the linear groove working surface 21111, and the processed The cylindrical roller axis 31 coincides with the linear groove base line 21116 . See Figure 3.

During grinding, the cylindrical roller 3 to be processed enters the linear grooves 2111 from the linear groove inlets 21118 of the first grinding disc, passes through the linear grooves 2111 and exits from the corresponding linear grooves 21119 leaves the linear groove 2111, see Figure 10(a) and Figure 11(a).

Each linear groove inlet 21118 of the first grinding disc is located on the outer edge of the first grinding disc 21, and each linear groove outlet 21119 of the first grinding disc is located on the first grinding disc 21. inner edge. Or each linear groove inlet 21118 of the first grinding disc is arranged on the inner edge of the first grinding disc 21, and each linear groove outlet 21119 of the first grinding disc is arranged on the first grinding disc 21 on the outer edge. It is recommended that each linear groove inlet 21118 of the first grinding disc is arranged on the outer edge of the first grinding disc 21, and each linear groove outlet 21119 of the first grinding disc is arranged on the first grinding disc 21, see Figure 10(a) and Figure 11(a).

It is recommended that all said linear grooves 2111 are evenly distributed around said first grinding disc axis 213 .

As shown in Figure 4 (a), the front surface 221 of the second grinding disc includes one or more spiral grooves 2211 and a transition surface 2212 connecting adjacent spiral grooves, as shown in Figure 9 (a) and Figure 9 (b). For two spiral grooves.

As shown in Figure 4(b), the surface of the spiral groove 2211 includes a spiral groove working surface 22111 that is in contact with the processed cylindrical roller 3 during grinding and a non-working surface that does not contact the processed cylindrical roller 3 .

The spiral groove working surface 22111 includes working surface 1 221111 that contacts the rolling surface 32 of the processed cylindrical roller during grinding and working surface 2 221112 that contacts the rounded corner 331 of the processed cylindrical roller.

The first working surface 221111 and the second working surface 221112 are on the first scanning surface 221121 and the second scanning surface 221122 respectively, and the first scanning surface 221121 and the second scanning surface 221122 are scanning surfaces with equal cross-sections. During the grinding process, the rolling surface 32 and the rounded corner 331 of the cylindrical roller to be processed under the constraint of the linear groove working surface 21111 of the first grinding disc are in phase with the working surface 1 22111 and the working surface 2 221112 respectively. cut. The scanning paths of the first scanning surface 221121 and the second scanning surface 221122 are the same, and the scanning paths of the first scanning surface 221121 and the second scanning surface 221122 both pass through the rolling surface 32 of the processed cylindrical roller on its axis 31 Map the middle point Q of CD, the right conic helix distributed on a right conical surface.

As shown in Figure 4 (c), define: the scanning path 22116 of the scanning surface 1 221121 and the scanning surface 221122 where the working surface one 221111 and the working surface two 221112 are located is the baseline of the second grinding disc spiral groove 2211, and the positive The conical surface is the base surface 224 of the second grinding disc, and the axis of the base surface 224 is the axis 223 of the second grinding disc 22 .

The feature of the right conical helix is: as shown in Figure 4 (c), a plain line on the said right conical surface (i.e. the second grinding disc base surface 224), i.e. the second grinding disc base plane plain line 2242 , make a rotary motion around the axis of the right conical surface (that is, the axis of the second grinding disc base surface 224, that is, the second grinding disc axis 223), and a moving point on the plain line 2242 of the second grinding disc base surface P moves linearly along the base line 2242 of the second grinding disc, and the trajectory of the moving point P is the right conical helix, that is, the base line 22116 of the spiral groove. The track of the moving point P is at the tangent line of the moving point P (that is, the tangent line 22117 of the base line of the spiral groove) and the element line 2242 perpendicular to the second grinding disc base surface, the second grinding disc base surface 224 at the moving point The included angle of the tangent line 2243 of P (that is, the tangent line 2243 of the second grinding disk base surface) is λ, and the included angle λ is the helix angle of the right conical helix. When the helix angle λ is a fixed angle and λ≠0, the right conical helix is a right conical equiangular helix 221161; when the helix angle λ changes with the position of the moving point P, the The right conic helix is the right conic non-equal angle helix 221162.

As shown in Fig. 4 (a), definition: the apex angle 2β of the second grinding disc base surface 224 is that the sectional line 2241 of the second grinding disc base surface in the second grinding disc axial section 225 is located at the second grinding disc base surface. The included angle of the solid side of the grinding disc 22 , the reference symbol β is the cone top half angle of the base surface 224 of the second grinding disc.

The generatrix (ie, the scanning profile) of the first scanning surface 221121 and the second scanning surface 221122 is within the axial section 225 of the second grinding disc.

The specific meaning that the first scanning surface 221121 and the second scanning surface 221122 are equal-section scanning surfaces is: in the second grinding disc axial section 225 at different positions of the spiral groove baseline 22116, the first scanning surface 221121 Both the axial sectional profile 1 221131 and the axial sectional profile 2 221132 of the scanning surface 2 221122 remain unchanged. .

The apex angle 2β of the second grinding disc base surface 224 and the apex angle 2α of the first grinding disc base surface 214 satisfy the relationship:

2α+2β=360°

During grinding, under the constraints of the linear groove working surface 21111 of the first grinding disc, as shown in Figure 5 (a) and Figure 5 (b), Figure 5 (b) is the E of Figure 5 (a) The part is enlarged, the rolling surface 32 of the processed cylindrical roller is in line contact (tangent) with the working surface 221111 of the spiral groove, and the rounded corner 331 of the end surface of the processed cylindrical roller is in contact with the spiral groove Line contact (tangent) or point contact (tangent) occurs on the working surface 221112. The processed cylindrical roller 3 only has a degree of freedom of rotational movement around its own axis 31 .

As shown in Figure 5 (b), the contact line 322 between the rolling surface 32 of the processed cylindrical roller and the working surface 221111 of the spiral groove is at the second grinding disc containing the axis 31 of the processed cylindrical roller In the axial section 225, the contact line 322, the axial section profile 221131 of the scanning surface 221111 where the working surface 221111 of the spiral groove is located, and the axial section section line of the rolling surface of the processed cylindrical roller 323 are on the same straight line.

As shown in Figure 6(a), when the scanning path of the spiral groove scanning surface where the spiral groove working surface 22111 is located is a positive conical equiangular helix 221161, due to the helix angle of the positive conical equiangular helix 221161 λ is a fixed angle. During grinding, the rounded corner 331 of one end surface of the processed cylindrical roller 3 is in line contact with the working surface 221112 of the spiral groove, and the reference numeral 3312 is the contact line 2 where the line contact occurs.

As shown in Figure 6(b), when the scanning path of the spiral groove scanning surface where the spiral groove working surface 22111 is located is a positive conical non-cone helix 221162, due to the helical The lift angle λ is not a fixed angle. During the grinding process, the rounded corner 331 of one end surface of the processed cylindrical roller is in point contact with the working surface 221112 of the spiral groove, and the position of the contact point N varies with the position of the processed cylindrical roller 3. The position on the said helical groove 2211 varies; The axial section profile 221131 of the scanning surface 221121 where the surface 221111 is located and the axial section section line 323 of the rolling surface of the processed cylindrical roller are on the same straight line, and there is a relative distance between the two along the straight line. displacement.

As shown in FIG. 6(a) and FIG. 6(b), reference numeral 322 is a contact line 1 between the rolling surface 32 of the processed cylindrical roller and the working surface 221111 of the spiral groove.

As shown in Figure 4 (b), the characteristics of the axial section profile 221132 of the scanning surface 2 where the working surface 2 of the spiral groove is located (that is, the scanning profile of the scanning surface 2 221122 in the axial section 225 of the second grinding disc) It is directly related to the contact relationship between the end face rounding 331 of the processed cylindrical roller and the working surface 221112 of the spiral groove and the base line 22116 of the spiral groove. According to the end face rounding 331 of the processed cylindrical roller The contact relationship with the second working surface 221112 of the spiral groove and the base line 22116 of the spiral groove are determined by analytical method or graphical method with the help of three-dimensional design software.

The structural relationship between the scanning surface 221122 where the working surface 221112 of the spiral groove that is suitable for a given cylindrical roller 3 to be processed and the cylindrical roller 3 to be processed can be expressed as: According to the first The constraint relationship of the linear groove working surface 21111 of the grinding disc to the given cylindrical roller 3 to be processed, the structural relationship between the first grinding disc 21 and the second grinding disc 22 and their relative position during grinding , determine the position and posture of the axis 31 of the processed cylindrical roller relative to the second grinding disc base surface 224 and the base line 22116 of the spiral groove, that is, the axis 31 of the processed cylindrical roller and the second grinding disc base surface The cross-sectional line 2241 of the shaft section coincides with the spiral groove base line 22116 at the midpoint Q of the mapping CD of the rolling surface 32 of the processed cylindrical roller on its axis 31 . The processed cylindrical roller 3 is moved relative to the second grinding disc 22 along the base line 22116 of the spiral groove to perform a positive conical spiral movement, and remove the physical contact with the processed cylindrical roller at the front surface 221 of the second grinding disc. The material that interferes with the rounded corner 331 of the end face of the roller, and the surface related to the rounded corner 331 of the processed cylindrical roller formed on the entity at the front surface 221 of the second grinding disc is the spiral groove The scanning surface 221122 where the working surface 221112 is located.

When the linear groove inlets 21118 of the first grinding disc are located on the outer edge of the first grinding disc 21, and the linear groove outlets 21119 of the first grinding disc are located at the outer edge of the first grinding disc 21 At the inner edge, the spiral groove inlets 22118 of the second grinding disc are arranged on the outer edge of the second grinding disc 22, and the spiral groove outlets 22119 of the second grinding disc are arranged on the second grinding disc 22. inner edge. When the linear groove inlets 21118 of the first grinding disc are located on the inner edge of the first grinding disc 21, and the linear groove outlets 21119 of the first grinding disc are located at the inner edge of the first grinding disc 21 At the outer edge, each spiral groove inlet 22118 of the second grinding disc is arranged on the inner edge of the second grinding disc 22, and each spiral groove outlet 22119 of the second grinding disc is arranged on the second grinding disc 22. , see Figure 9(a) and Figure 9(b).

It is recommended that all said helical grooves 2211 are evenly distributed around said second grinding disc axis 223 .

When 2α=2β=180°, the difference from 2α≠2β is that the first grinding disc base surface 214 and the second grinding disc base surface 224 are both planes; the first grinding disc axis 213 is perpendicular to The first grinding disc base surface 214, the second grinding disc axis 223 is perpendicular to the second grinding disc base surface 224, and except for the linear groove base line 21116 in the first grinding disc axis section 215 In addition, there is also the situation that the linear groove base line 21116 is not within the axial section 215 of the first grinding disc. When the linear groove base line 21116 is not in the axial section 215 of the first grinding disc, the central plane 21112 of the linear groove working surface includes the linear groove base line 21116 and is parallel to the first grinding disc axis 213, and during grinding, the axis 31 of the processed cylindrical roller is not within the axial section 215 of the first grinding disc and the axial section 225 of the second grinding disc.

During grinding, the base surface 214 of the first grinding disc coincides with the base surface 224 of the second grinding disc; There is a gap between the transition surfaces 2212 connecting adjacent spiral grooves on the disk front surface 221 .

As shown in Figure 7, during the grinding process, corresponding to each intersection G of the spiral groove 2211 of the second grinding disc and the linear groove 2111 of the first grinding disc, in the linear groove of the first grinding disc A processed cylindrical roller 3 is distributed along the linear groove base line 21116 in the groove 2111 . Definition: corresponding to each intersection G, the area enclosed by the linear groove working surface 21111 of the first grinding disc and the spiral groove working surface 22111 of the second grinding disc is the grinding processing area.

At the same time, the present invention proposes a grinding device for finishing the rolling surface of cylindrical rollers, including the main machine, the roller circulation disc system 4 and the aforementioned grinding disc set 2, as shown in Figure 8(a) and Figure 8(b) shown.

The main machine includes a base 11 , a column 12 , a beam 13 , a slide table 14 , an upper pallet 15 , a lower pallet 16 , an axial loading device 17 and a spindle device 18 .

The base 11, uprights 12 and beams 13 form the frame of the host.

The first grinding disc 21 of the grinding disc set 2 is connected to the lower tray 16 , and the second grinding disc 22 of the grinding disc set 2 is connected to the upper tray 15 .

The slide table 14 is connected to the beam 13 through the axial loading device 17, and the column 12 can also serve as a guide member to provide a guide for the slide table 14 to move linearly along the axis 223 of the second grinding disc. . Driven by the axial loading device 17 and constrained by the column 12 or other guide components, the slide table 14 moves linearly along the axis 223 of the second grinding disc.

The spindle device 18 is used to drive the first grinding disc 21 or the second grinding disc 22 to rotate around its axis.

As shown in FIGS. 9( a ) and 9 ( b ), the roller circulation off-disk system 4 includes a roller collecting mechanism 41 , a roller conveying system 43 , a roller sorting mechanism 44 and a roller feeding mechanism 45 .

The roller collecting mechanism 41 is arranged at the outlets 21119 of the first grinding discs, and is used to collect the processed cylindrical rollers 3 leaving the grinding area from the outlets 21119 of the straight grooves.

The roller conveying system 43 is used to convey the processed cylindrical roller 3 from the roller collecting mechanism 41 to the roller feeding mechanism 45 .

The roller finishing mechanism 44 is arranged at the front end of the roller feeding mechanism 45 for adjusting the axis 31 of the cylindrical roller to be processed to the direction required by the roller feeding mechanism 45 .

During grinding, there are two modes of rotation of the grinding disc set 2; mode 1, the first grinding disc 21 rotates around its axis, and the second grinding disc 22 does not rotate; mode 2, the first grinding disc The disc 21 does not rotate, said second grinding disc 22 rotates about its axis.

There are three configurations of the main machine: main machine type one is used for the grinding disc set 2 to rotate in mode one; main machine type two is used for the grinding disc set 2 to rotate in mode two; main machine type three is suitable for both The grinding disc set 2 rotates in mode one, and it is also suitable for the grinding disc set 2 to rotate in mode two.

Corresponding to the main machine type one, as shown in Figure 8(a), the main shaft device 18 is installed on the base 11, and the first grinding disc 21 is driven around its axis through the lower tray 16 connected thereto. Rotation; the upper tray 15 is connected with the slide table 14, and the second grinding disc 22 and the upper tray 15 do not rotate.

During grinding, the first grinding disc 21 rotates around its axis relative to the second grinding disc 22 . The rotation direction of the first grinding disc 21 needs to be determined according to the direction of rotation of the spiral groove 2211 of the second grinding disc and the positions of the spiral groove inlet 22118 and the spiral groove outlet 22119, so as to ensure that the processed cylindrical roller 3 can be rotated from the Each linear groove inlet 21118 of the first grinding disc enters the linear groove 2111 and exits the linear groove 2111 from each corresponding linear groove outlet 21119 . Under the constraint of the column 12 or other guide components, the slide table 14, together with the upper tray 15 connected thereto, and the second grinding disc 22 connected with the upper tray move toward the direction along the axis 223 of the second grinding disc. The first grinding disc 21 approaches and applies working pressure to the processed cylindrical rollers 3 distributed in the linear grooves 2111 of the first grinding disc 21 .

As shown in Fig. 10(a) and Fig. 10(b), each spiral groove 2211 of the second grinding disc is equipped with a roller feeding mechanism 45, and the roller feeding mechanism 45 is respectively installed on Each spiral groove entrance 22118 of the second grinding disc is used to push a processed cylindrical roller 3 when any linear groove entrance 21118 of the first grinding disc meets the spiral groove entrance 22118 Enter the linear trench entry 21118.

The roller feeding mechanism 45 is provided with a roller feeding channel 451 and a butt joint spiral groove. The continuation of the butt spiral groove working surface includes the butt spiral groove working surface 45211 which is in contact with the rolling surface 32 and the end round corner 331 of the processed cylindrical roller 3 respectively during the feeding process and the butt joint spiral groove working surface two 45212, the butt joint spiral groove working surface one 45211 and the butt joint spiral groove working surface two 45212 are respectively the continuation of the second grinding disc spiral groove working surface one 221111 and working surface two 221112, The roller feed channel 451 intersects the butt helical groove. When the cylindrical roller 3 to be processed enters the entrance 21118 of the linear groove, under the constraints of the roller feeding channel 451, the axis 31 of the cylindrical roller 3 to be processed and the linear groove it is about to enter The linear groove base lines 21116 at the inlet 21118 remain parallel, or transition from nearly parallel to parallel.

During the grinding process, during the rotation process of the first grinding disc 21, the butt spiral grooves in the roller feeding mechanism 45 at the entrances 22118 of the spiral grooves of the second grinding disc are sequentially connected with the first grinding disc respectively. The linear groove inlets 21118 of the disk meet. At any one of the spiral groove entrances 22118, when the butt spiral groove in the roller feeding mechanism 45 at the spiral groove entrance 22118 intersects with any linear groove entrance 21118 of the first grinding disc, Under the action of gravity or the pushing action of the roller feeding mechanism 45, a cylindrical roller 3 to be processed enters the linear groove working surface 21111 in a manner that its rolling surface 32 approaches the linear groove working surface 21111 along its own radial direction. Trench entry 21118. The processed cylindrical roller 3 entering the linear groove entrance 21118 rotates with the first grinding disc 21 relative to the second grinding disc 22, and then enters the roller feeding mechanism 45 at the spiral groove entrance 22118 Under the pushing action of the butt spiral groove working surface, it enters the grinding processing area.

On the one hand, the processed cylindrical roller 3 is continuously rotated around its own axis 31 under the drive of the sliding friction driving torque of the spiral groove working surface 22111 of the second grinding disc; on the other hand, as shown in Fig. 9(a) and Fig. 10 (a) and Figure 10(b), the processed cylindrical roller 3 that has entered the grinding processing area is pushed along the first The linear groove base line 21116 of the grinding disc makes a linear feed motion, runs through the linear groove 2111, and passes through each spiral groove outlet 22119 of the second grinding disc and each linear groove outlet of the first grinding disc. The exit intersection of 21119 leaves the grinding processing area to complete a grinding processing. The processed cylindrical rollers 3 leaving the grinding processing area pass through the roller collection mechanism 41, the roller conveying system 43 and the roller sorting mechanism 44, and after the original order is disturbed, they are again placed in the roller feeding mechanism 45. Under the effect of the action of the second grinding disc, each spiral groove entrance 22118 and the entrance of each linear groove entrance 21118 of the first grinding disc intersect to enter the grinding processing area sequentially. The entire grinding process is repeated continuously until the surface quality, shape accuracy and dimensional consistency of the rolling surface 32 of the processed cylindrical roller meet the technical requirements, and the finishing process ends.

Corresponding to the main machine type two, as shown in Figure 8(b), the main shaft device 18 is installed on the slide table 14, and the second grinding disc 22 is driven around its axis through the upper tray 15 connected thereto. Rotation; the lower tray 16 is installed on the base 11, and the first grinding disc 21 and the lower tray 16 do not rotate.

During grinding, the second grinding disc 22 rotates around its axis relative to the second grinding disc 21 . The rotation direction of the second grinding disc 22 needs to be determined according to the direction of rotation of the spiral groove 2211 of the second grinding disc and the positions of the spiral groove inlet 22118 and the spiral groove outlet 22119, so as to ensure that the processed cylindrical roller 3 can be rotated from the Each linear groove inlet 21118 of the first grinding disc enters the linear groove 2111 and exits the linear groove 2111 from each corresponding linear groove outlet 21119 . The slide table 14 is bounded by the column 12 or other guide components, together with the main shaft device 18 thereon, the upper tray 15 connected with the main shaft device 18, and the second grinding machine connected with the upper tray 15 The disk 22 approaches the first grinding disk 21 along the axis 223 of the second grinding disk, and applies working pressure to the processed cylindrical rollers 3 distributed in the linear grooves 2111 of the first grinding disk 21 .

As shown in Figure 11(a) and Figure 11(b), each linear groove 2111 of the first grinding disc is equipped with a roller feeding mechanism 45, and the roller feeding mechanism 45 is installed respectively At each linear groove entrance 21118 of the first grinding disc, when any spiral groove entrance 22118 of the second grinding disc meets the linear groove entrance 21118, a processed cylindrical roller 3 Push into the straight groove entry 21118.

The roller feeding mechanism 45 is provided with a roller feeding channel 451, at the entrance 21118 of any linear groove, the positioning surface 4511 of the roller feeding channel is the working surface of the linear groove 21111 on the Continuation within the roller feed mechanism 45. When the cylindrical roller 3 to be processed enters the entrance 21118 of the linear groove, under the positioning support of the positioning surface 4511 of the roller feeding channel, the axis 31 of the cylindrical roller 3 to be processed is in the linear groove The central plane 21112 of 2111 coincides with the linear groove base line 21116.

During the grinding process, during the rotation of the second grinding disc 22 , the spiral groove inlets 22118 of the second grinding disc intersect with the linear groove inlets 21118 of the first grinding disc in turn. At any of the linear groove entrances 21118, when the linear groove entrance 21118 intersects with any spiral groove entrance 22118 of the second grinding disc, under the pushing action of the roller feeding mechanism 45 , a cylindrical roller 3 to be processed enters the linear groove entrance 21118 along the linear groove base line 21116 in a manner that its rolling surface 32 slides on the linear groove working surface 21111 . The cylindrical roller 3 to be processed entering the linear groove entrance 21118 enters the grinding processing area under the pushing action of the spiral groove working surface 22111 at the spiral groove entrance 22118 which then turns around.

On the one hand, the processed cylindrical roller 3 continuously rotates around its own axis 31 under the drive of the sliding friction driving torque of the spiral groove working surface 22111 of the second grinding disc; on the other hand, as shown in Figure 9(b) and Figure 11 (a) and Figure 11(b), the processed cylindrical roller 3 that has entered the grinding processing area is pushed along the first The linear groove base line 21116 of the grinding disc makes a linear feed motion, runs through the linear groove 2111, and passes through each spiral groove outlet 22119 of the second grinding disc and each linear groove outlet of the first grinding disc. The exit intersection of 21119 leaves the grinding processing area to complete a grinding processing. The processed cylindrical rollers 3 leaving the grinding processing area pass through the roller collection mechanism 41, the roller conveying system 43 and the roller sorting mechanism 44, and after the original order is disturbed, they are again placed in the roller feeding mechanism 45. Under the effect of the action of the second grinding disc, each spiral groove entrance 22118 and the entrance of each linear groove entrance 21118 of the first grinding disc intersect to enter the grinding processing area sequentially. The entire grinding process is repeated continuously until the surface quality, shape accuracy and dimensional consistency of the rolling surface 32 of the processed cylindrical roller meet the technical requirements, and the finishing process ends.

Corresponding to the main machine type three, there are two sets of spindle devices 18, one of which is installed on the base 11, and drives the first grinding disc 21 around its axis through the lower tray 16 connected to it. Rotation, another set of spindle devices 18 is installed on the slide table 14, and the second grinding disc 22 is driven to rotate around its axis through the upper tray 15 connected to it; the two sets of spindle devices 18 are all provided with locks. The dead mechanism allows only one of the first grinding disc 21 and the second grinding disc 22 to rotate at the same time, while the other grinding disc is in a circumferentially locked state.

When the grinding disc set 2 of the grinding equipment rotates for grinding in mode one, the relative movement of the first grinding disc 21 and the second grinding disc 22 is the same as that of the main machine type one; the roller feeding mechanism 45 The structure, installation position and function are the same as the main machine type one; the circulation path and grinding process of the processed cylindrical roller 3 are the same as the main machine type one.

When the grinding disc set 2 of the grinding equipment rotates in mode 2 for grinding, the relative movement of the first grinding disc 21 and the second grinding disc 22 is the same as that of the main machine type 2; the roller feeding mechanism 45 The structure, installation position and function are the same as those of the main machine type two; the circulation path and grinding process of the processed cylindrical roller 3 are the same as the main machine type two.

As shown in Figure 10(a) and Figure 11(a), during grinding, the cylindrical roller 3 to be processed enters the grinding processing area from each linear groove inlet 21118 of the first grinding disc, and from the first grinding The outlets 21119 of the straight grooves of the disk leave the grinding processing area, and then pass through the roller collection mechanism 41, the roller conveying system 43, and the roller finishing mechanism in sequence from the outlets 21119 of the first grinding disk. 44 and the roller feeding mechanism 45, enter each linear groove entrance 21118 of the first grinding disc, form the cylindrical roller 3 to be processed along the first grinding disc 21 and the second grinding disc 22 along the The linear feeding of the linear groove base line 21116 and the cycle of collecting, conveying, sorting, and feeding through the roller circulation system 4 outside the disk. The path of the circulation outside the grinding disc set 2 is from the outlets 21119 of the linear grooves of the first grinding disc, through the roller collection mechanism 41, the roller conveying system 43, and the roller finishing in sequence. The mechanism 44 and the roller feeding mechanism 45 enter the entrances 21118 of the linear grooves of the first grinding disc to define the path as the outer path of the roller circulation disc.

When the present invention is implemented, the grinding method of free abrasive grains or the grinding mode of fixed abrasive grains can be adopted.

When the consolidated abrasive is used for grinding, the linear groove working surface 21111 of the first grinding disc is made of consolidated abrasive material.

When using the free abrasive grinding method, the material of the linear groove working surface 21111 of the first grinding disc and the material of the spiral groove working surface 22111 of the second grinding disc can be respectively selected, so that the The friction pair composed of the material of the spiral groove working surface 22111 of the second grinding disc and the material of the processed cylindrical roller 3 produces a sliding frictional driving torque when the processed cylindrical roller 3 rotates around its own axis 31 is greater than the first The friction pair composed of the material of the linear groove working surface 21111 of the grinding disc and the material of the processed cylindrical roller 3 produces a sliding frictional resistance moment against the rotation of the processed cylindrical roller 3 around its own axis 31, thereby driving the processed cylindrical roller Sub 3 rotates continuously around its own axis 31.

When the material of the linear groove working surface 21111 of the first grinding disc is polytetrafluoroethylene, and the material of the spiral groove working surface 22111 of the second grinding disc is polymethyl methacrylate, GCr15, G20CrNi2MoA can be realized , Cr4Mo4V and other materials to be processed cylindrical roller 3 rotates continuously around its own axis 31.

When using the consolidated abrasive grinding method to grind the processed cylindrical roller 3 of ferromagnetic material (such as GCr15, G20CrNi2MoA, Cr4Mo4V, etc.), a magnetic structure can be arranged inside the second grinding disc 22, so that the A magnetic field is formed near the working surface 22111 of the spiral groove. By adjusting the magnetic field strength of the magnetic structure, the spiral groove working surface 22111 of the second grinding disc can generate a sufficiently strong magnetic attraction force on the processed cylindrical roller 3 of the ferromagnetic material, so that the second grinding The driving torque of sliding friction generated by the spiral groove working surface 22111 of the disk to the processed cylindrical roller 3 of ferromagnetic material rotating around its own axis 31 is greater than that of the linear groove working surface 21111 of the first grinding disc to the iron The processed cylindrical roller 3 made of magnetic material rotates around its own axis 31 to generate sliding friction resistance torque, thereby driving the processed cylindrical roller 3 made of ferromagnetic material to continuously rotate around its own axis 31 .

When using the free abrasive grinding method to grind the processed cylindrical roller 3 made of ferromagnetic material, the second grinding disc 22 can also have a built-in magnetic structure to increase the impact of the spiral groove working surface 22111 of the second grinding disc on the The sliding friction driving torque generated by the processed cylindrical roller 3 made of ferromagnetic material rotating around its own axis 31 . At this time, the processed cylindrical roller 3 made of ferromagnetic material can continuously rotate around its own axis 31 without the material of the linear groove working surface 21111 of the first grinding disc and the spiral groove working surface 22111 of the second grinding disc. The matching constraints of the material.

It is understood that the features mentioned above and below can be used not only in the combination described in the examples, but also in other combinations or alone, without going beyond the scope of the present invention.

When using the grinding equipment of the present invention to grind the rolling surface of the cylindrical roller, the grinding method comprises the following steps:

Step 1, the second grinding disc 22 approaches the first grinding disc 21 along its axis, to the transition surface 2112 connecting the adjacent linear groove on the front of the first grinding disc and the transition surface 2112 connecting the adjacent spiral groove on the front of the second grinding disc The transition surface 2212 is as close as possible, but the rolling surface 32 of the processed cylindrical roller in the grinding processing area has not yet been in surface contact with the linear groove working surface 21111 of the first grinding disc and with the working surface of the spiral groove of the second grinding disc A line contact occurs at 221111, that is, the space of each grinding processing area enclosed by the linear groove working surface 21111 of the first grinding disc and the spiral groove working surface 22111 of the second grinding disc can and can only accommodate one processed cylindrical roller. child 3.

Step 2, corresponding to the rotation mode 1 of the grinding disc set 2, drive the first grinding disc 21 to rotate around its axis at a low speed relative to the second grinding disc 22; Its axis rotates at a low speed relative to the first grinding disc 21 . According to the outer diameter of the first grinding disc 21 and the second grinding disc 22, the rotation speed is 1 to 10 rpm, and the rotation direction of the first grinding disc 21 and the second grinding disc 22 needs to be based on the direction of rotation of the spiral groove 2211 of the second grinding disc. And the positions of the spiral groove entrance 22118 and the spiral groove exit 22119 are determined to ensure that the processed cylindrical roller 3 can enter the linear groove 2111 from the linear groove entrance 21118 of the first grinding disc and from the corresponding linear groove exit 21119 Leave the straight groove 2111.

Step 3, start the roller conveying system 43, the roller finishing mechanism 44 and the roller feeding mechanism 45; adjust the feeding speed of the roller feeding mechanism 45 to make it relative to the first grinding disc 21 and the second grinding disc 22 The speed of rotation is matched to ensure that when each spiral groove entrance 22118 of the second grinding disc meets each linear groove entrance 21118 of the first grinding disc, one will be processed under the action of the roller feeding mechanism 45 Cylindrical roller 3 enters each entrance intersection of helical groove entrance 22118 and linear groove entrance 21118; Adjust the conveying speed of roller conveying system 43 and the finishing speed of roller finishing mechanism 44 so that it is consistent with that of roller feeding mechanism 45 The feeding speed is matched, so that the processed cylindrical roller 3 enters each entrance intersection in time under the action of the roller feeding mechanism 45 through the roller conveying system 43 and the roller finishing mechanism 44; The cylindrical roller 3 then enters the grinding process area under the pushing action of the spiral groove working surface 22111 at the spiral groove entrance 22118 of the second grinding disc due to the relative rotation of the first grinding disc 21 and the second grinding disc 22; enters the grinding process The processed cylindrical roller 3 in the area makes a linear feed motion along the linear groove base line 21116 of the first grinding disc under the continuous pushing action of the spiral groove working surface 22111 of the second grinding disc, penetrates through the linear groove 2111, and Leave the grinding processing area from the exit intersection of each spiral groove outlet 22119 of the second grinding disc and each linear groove outlet 21119 of the first grinding disc; the processed cylindrical roller 3 leaving the grinding processing area passes through the roller collecting mechanism 41, The roller conveying system 43 and the roller sorting mechanism 44, after the original order is disturbed, enter the intersection of the entrance in turn under the action of the roller feeding mechanism 45; 21 and the second grinding disc 22 along the linear groove base line 21116 and the cycle of collecting, conveying, sorting and feeding through the roller circulation system 4 outside the disc.

Step 4. Adjust the relative rotational speed of the first grinding disc 21 and the second grinding disc 22 to the relative working rotational speed. According to the outer diameters of the first grinding disc 21 and the second grinding disc 22, the relative working rotational speed is 15-60 rpm. Adjust the feeding speed of the roller feeding mechanism 45 to the working feeding speed to make it match with the relative working speed of rotation of the first grinding disc 21 and the second grinding disc 22, adjust the delivery speed and the roller of the roller conveying system 43 The sorting speed of the sorting mechanism 44 makes the processed cylindrical rollers 3 in the roller collecting mechanism 41, the roller conveying system 43, the roller sorting mechanism 44 and the roller feeding mechanism 45 in the above-mentioned roller circulation system 4 The inventory matching, the circulation is smooth and orderly.

Step 5: Fill the grinding area with grinding liquid.

Step 6: The second grinding disc 22 is further approaching the first grinding disc 21 along its axis, so that the rolling surface 32 of the processed cylindrical roller in the grinding processing area and the linear groove working surface 21111 of the first grinding disc respectively Surface contact and line contact with the working surface 221111 of the spiral groove of the second grinding disc, and apply initial working pressure to the processed cylindrical roller 3 distributed in the grinding processing area, according to the initial diameter of the processed cylindrical roller 3 The working pressure is an average of 0.5-2N for each processed cylindrical roller. The spiral groove working surface 22111 of the second grinding disc rotates the processed cylindrical roller 3 around its own axis 31, and the sliding friction driving moment generated is greater than the linear groove working surface 21111 of the first grinding disc against the processed cylindrical roller 3 around itself. The sliding friction resistance moment generated by the rotation of the axis 31 makes the processed cylindrical roller 3 perform continuous rotational motion around its own axis 31; Under the action of extrusion, linear feed motion is made along the linear groove base line 21116 of the first grinding disc. The rolling surface 32 of the cylindrical roller to be processed starts to undergo the grinding process of the linear groove working surface 21111 of the first grinding disc and the working surface 221111 of the spiral groove of the second grinding disc.

Step 7. With the stable operation of the grinding process, gradually increase the working pressure to the normal working pressure for the processed cylindrical rollers 3 distributed in the grinding processing area. According to the diameter of the processed cylindrical rollers 3, the normal working pressure is the average per A processed cylindrical roller 2 ~ 50N. The processed cylindrical roller 3 maintains the contact relationship with the linear groove working surface 21111 of the first grinding disc and the spiral groove working surface 22111 of the second grinding disc in step 6, and continuously rotates around its own axis 31 and along the first grinding disc. During the linear feed movement of the linear groove base line 21116 of the disc, its rolling surface 32 continues to undergo the grinding process of the linear groove working surface 21111 of the first grinding disc and the working surface 221111 of the second grinding disc spiral groove.

Step 8: After a period of grinding and processing, carry out random inspection on the processed cylindrical roller 3; when the surface quality, shape accuracy and dimensional consistency of the rolling surface 32 of the processed cylindrical roller have not yet reached the technical requirements, Continue the grinding process of this step; when the surface quality, shape accuracy and dimensional consistency of the rolling surface 32 of the processed cylindrical roller to be sampled meet the technical requirements, go to step nine.

Step 9: Gradually reduce the working pressure and eventually reach zero; stop the operation of the roller conveying system 43, the roller finishing mechanism 44 and the roller feeding mechanism 45, and adjust the relative speed of the first grinding disc 21 and the second grinding disc 22 to zero; stop adding grinding liquid to the grinding processing area; drive the second grinding disc 22 to return to the non-working position along its axis. Collect the processed cylindrical rollers 3 everywhere in the cycle, so far, the grinding process ends.

It can be understood that the above-mentioned steps and sequences can be combined not only as described in the example, but also can be used in other combinations, which is not beyond the scope of the present invention.

In the grinding equipment for finishing the rolling surface of cylindrical rollers of the present invention, a magnetic structure may also be provided inside the second grinding disc 22 of the grinding disc set 2 under the following two situations.

Case 1: When the processed cylindrical roller 3 made of ferromagnetic material is ground by the consolidated abrasive grinding method, a magnetic structure is arranged inside the second grinding disc 22, and the magnetic field strength of the magnetic structure is adjusted to make the second grinding disc 22 The spiral groove working surface 22111 of the grinding disc produces a sliding frictional driving moment for the processed cylindrical roller 3 made of ferromagnetic material to rotate around its own axis 31 than the linear groove working surface 21111 of the first grinding disc for the first grinding disc. The processed cylindrical roller 3 made of ferromagnetic material rotates around its own axis 31 to generate sliding frictional resistance torque, thereby driving the processed cylindrical roller 3 made of ferromagnetic material to continuously rotate around its own axis 31 .

Situation 2: When using the free abrasive grinding method to grind the processed cylindrical roller 3 made of ferromagnetic material, the second grinding disc 22 has a built-in magnetic structure to increase the spiral groove working surface 22111 of the second grinding disc. The sliding friction driving torque generated by the processed cylindrical roller 3 made of ferromagnetic material rotating around its own axis 31 makes the processed cylindrical roller 3 made of ferromagnetic material rotate continuously around its own axis 31 without being affected by the first grinding The material matching of the linear groove working surface 21111 of the disk and the material of the spiral groove working surface 22111 of the second grinding disk is restricted.

For grinding the rolling surface of the cylindrical roller under the condition that the second grinding disc 22 of the grinding disc set 2 in the grinding device of the present invention is provided with a magnetic structure, the roller circulation external system 4 in the grinding device used is also A roller demagnetization device is included, and the roller demagnetization device is arranged in the roller conveying system 43 in the outer circulation path of the roller disc or before the roller conveying system 43, and is used to magnetize the iron by the magnetic field of the second grinding disc built-in magnetic structure. The processed cylindrical rollers made of magnetic materials are demagnetized to avoid agglomeration of the processed cylindrical rollers made of ferromagnetic materials when they pass through the roller conveying system 43 or the roller finishing mechanism 44. The only difference from the grinding method described above is:

In step three, start the roller demagnetization device at the same time.

In step 6, before applying the initial working pressure to the processed cylindrical rollers 3 distributed in the grinding processing area, the magnetic structure enters the working state; after applying the initial working pressure to the processed cylindrical rollers 3 distributed in the grinding processing area At the same time, the magnetic field strength of the magnetic structure is adjusted so that the sliding friction driving torque generated by the spiral groove working surface 22111 of the second grinding disc on the rotation of the processed cylindrical roller 3 around its own axis 31 is greater than that of the linear groove working of the first grinding disc The surface 21111 reacts to the sliding friction resistance moment generated by the processed cylindrical roller 3 rotating around its own axis 31 , thereby driving the processed cylindrical roller 3 to perform continuous rotational motion around its own axis 31 .

In step nine, after adjusting the relative rotational speed of the first grinding disc 21 and the second grinding disc 22 to zero, the magnetic structure is switched to a non-working state, and the roller demagnetization device is stopped.

Due to the linear groove working surface 21111 of the first grinding disc and the spiral groove working surface 22111 of the second grinding disc for the parameter design of the specific processed cylindrical roller 3, there are inevitably manufacturing errors, and the first Installation errors also exist when the grinding disc 21 and the second grinding disc 22 are installed on the grinding equipment. These manufacturing errors and installation errors may cause the contact state between the processed cylindrical roller 3 and the linear groove working surface 21111 of the first grinding disc and the spiral groove working surface 22111 of the second grinding disc to exist in an ideal state during grinding. difference.

In order to reduce this difference, before the first grinding disc 21 and the second grinding disc 22 are used for the first time, it is recommended to use the processed cylindrical roller 3 with the same geometric parameters to the linear groove working surface of the first grinding disc. 21111 and the spiral groove working surface 22111 of the second grinding disc are run-in. The running-in method is the same as the grinding method of the processed cylindrical roller 3; for step 8, the processed cylindrical roller 3 participating in the running-in is randomly inspected, when the surface quality and shape accuracy of the rolling surface 32 of the processed cylindrical roller to be sampled are When the consistency of size and size meets the technical requirements, the running-in process enters step nine, and the running-in ends; otherwise, continue to step eight.

The grinding disc set, grinding equipment and grinding method proposed by the present invention are not limited to the finishing of the rolling surface of cylindrical rollers, and can also be used for finishing the outer diameter surface of cylindrical parts such as needle rollers with the characteristics of straight lines of cylindrical rollers , which is not beyond the scope of the present invention.

Claims (9)

1. A grinding disc set for finishing the cylindrical roller rolling surface, comprising a pair of coaxial first grinding disc (21) and second grinding disc (22), the first grinding disc front (211) and the second grinding disc The fronts (221) of the two grinding discs are relatively arranged, and it is characterized in that; The front surface (211) of the first grinding disc includes a group of radially distributed linear grooves (2111) and a transition surface (2112) connecting adjacent linear grooves; The linear groove working surface (21111) that is in contact with the rolling surface (32) of the processed cylindrical roller (3) during grinding is on the linear groove scanning surface (21113), and the linear groove scanning surface (21113 ) is an equal-section scanning surface; the scanning path of the linear groove scanning surface (21113) is a straight line, and the generatrix of the linear groove scanning surface (21113) is in the linear groove normal section (21114); In the groove method section (21114), the section profile (211131) of the linear groove scanning surface (21113) is a circular arc whose curvature radius is equal to the curvature radius of the rolling surface (32) of the processed cylindrical roller ; The scanning path of the linear groove scanning surface (21113) passes through the center of curvature of the cross-sectional profile (211131), and the scanning path is the linear groove baseline (21116); all the linear groove baselines (21116) are distributed in On a right conical surface, the right conical surface is the first grinding disc base surface (214), the axis of the first grinding disc base surface (214) is the first grinding disc axis (213), and the first grinding disc base surface (214) is the first grinding disc axis (213). The apex angle of the disc base surface (214) is 2α; The linear groove baseline (21116) is within the first grinding disc axial section (215), and the first grinding disc axial section (215) including the linear groove baseline (21116) is a linear groove working surface (21111) center plane (21112); during grinding, the axis (31) of the processed cylindrical roller is within the center plane (21112) of the working surface of the linear groove, and the rolling surface (32) of the processed cylindrical roller is in line with the Surface contact occurs on the working surface (21111) of the linear groove, and the axis (31) of the processed cylindrical roller coincides with the baseline (21116) of the linear groove; The front surface (221) of the second grinding disc includes one or more spiral grooves (2211) and a transition surface (2212) connecting adjacent spiral grooves; The spiral groove working surface (22111) includes working surface one (221111) which contacts with the rolling surface (32) of the processed cylindrical roller (3) during grinding and The second working surface (221112) where the rounded corner of one end surface (331) contacts, the first working surface (221111) and the second working surface (221112) are respectively on the first scanning surface (221121) and the second scanning surface (221122), so The scanning surface one (221121) and the scanning surface two (221122) are equal-section scanning surfaces; The rolling surface (32) and end face rounding (331) of the processed cylindrical roller under the constraint of the linear groove working surface (21111) of the first grinding disc are respectively connected with the working surface one (221111) and the working surface The second surface (221112) is tangent; the scanning paths of the first scanning surface (221121) and the second scanning surface (221122) pass through the rolling surface (32) of the processed cylindrical roller on its axis (31) The midpoint (Q) of the mapping (CD), and the right conical helix distributed on a right conical surface; the right conical surface is the second grinding disc base surface (224), and the second grinding disc base surface ( The axis of 224) is the second grinding disc axis (223); the generatrices of the scanning surface one (221121) and the scanning surface two (221122) are all in the second grinding disc axial section (225); the second grinding disc The apex angle of the base surface (224) is 2β, and: 2α+2β=360°; When 2α=2β=180°, the axis of the first grinding disc (213) is perpendicular to the base surface of the first grinding disc (214), and the axis of the second grinding disc (223) is perpendicular to the second grinding disc Disk base (224), and besides the linear groove baseline (21116) in the first grinding disk axis section (215), there is also the linear groove baseline (21116) not in the first grinding The situation in the disk axis section (215); when the linear groove baseline (21116) is not in the first grinding disk axis section (215), the central plane (21112) of the linear groove working surface (21111) ) parallel to the first grinding disc axis (213). 2. The grinding disc kit for finishing the cylindrical roller rolling surface according to claim 1, characterized in that, each linear groove entrance (21118) of the first grinding disc is located at the first grinding disc ( 21), each linear groove outlet (21119) of the first grinding disc is located at the inner edge of the first grinding disc (21); or each linear groove inlet (21119) of the first grinding disc ( 21118) are all located on the inner edge of the first grinding disc (21), and the outlets (21119) of the straight grooves of the first grinding disc are all located on the outer edge of the first grinding disc (21). 3. The grinding disc set for finishing the rolling surface of cylindrical rollers according to claim 1, wherein, when using the free abrasive grinding mode, the linear groove working surface (21111) of the first grinding disc is selected to ) and the material of the spiral groove working surface (22111) of the second grinding disc, so that the material of the spiral groove working surface (22111) of the second grinding disc is the same as the processed cylindrical roller The friction pair composed of the material of (3) produces a sliding frictional driving moment when the processed cylindrical roller (3) rotates around its own axis (31), which is greater than the material of the linear groove working surface (21111) of the first grinding disc The friction pair formed with the material of the processed cylindrical roller (3) produces a sliding frictional resistance moment when the processed cylindrical roller (3) rotates around its own axis (31), thereby driving the processed cylindrical roller (3) to rotate Self axis (31) rotates continuously. 4. A grinding device for finishing the rolling surface of cylindrical rollers, characterized in that it comprises a main frame, a roller circulation disc system (4) and a cylindrical roller as described in any one of claims 1 to 3 Grinding disc set (2) for rolling surface finishing; The main engine includes a base (11), a column (12), a beam (13), a slide table (14), an upper pallet (15), a lower pallet (16), an axial loading device (17) and a spindle device (18 ); The base (11), uprights (12) and beams (13) form the frame of the host; The first grinding disc (21) of the grinding disc set (2) is connected with the lower tray (16), and the second grinding disc (22) of the grinding disc set (2) is connected with the upper tray (15) connect; The slide table (14) is connected with the beam (13) through the axial loading device (17), and the column (12) can also be used as a guide component for the slide table (14) along the second The grinding disc axis (223) provides a guiding function for linear motion; the slide table (14) is driven by the axial loading device (17) and constrained by the column (12) or other guide components, along the The axis of the second grinding disc (223) moves linearly; The main shaft device (18) is used to drive the first grinding disc (21) or the second grinding disc (22) to rotate around its axis; The roller circulation system (4) includes a roller collection mechanism (41), a roller conveying system (43), a roller finishing mechanism (44) and a roller feeding mechanism (45); The roller collection mechanism (41) is arranged at each linear groove outlet (21119) of the first grinding disc, and is used to collect The processed cylindrical roller (3) in the grinding processing area enclosed by the linear groove working surface (21111) of the second grinding disc and the spiral groove working surface (22111); The roller conveying system (43) is used to convey the processed cylindrical roller (3) from the roller collecting mechanism (41) to the roller feeding mechanism (45); The roller finishing mechanism (44) is arranged at the front end of the roller feeding mechanism (45), and is used to adjust the axis (31) of the processed cylindrical roller to the position specified by the roller feeding mechanism (45). the direction required; During the grinding process, there are two modes of rotation of the grinding disc set (2); mode 1, the first grinding disc (21) rotates around its axis, and the second grinding disc (22) does not rotate; mode 2 , the first grinding disc (21) does not rotate, and the second grinding disc (22) rotates around its axis; There are three configurations of the main machine: main machine type one is used for the grinding disc set (2) to rotate in mode one; main machine type two is used for the grinding disc set (2) to rotate in mode two; main machine type Three is not only applicable to the first rotation of the grinding disc set (2), but also suitable for the second rotation of the grinding disc set (2); Corresponding to host type 1: The main shaft device (18) is installed on the base (11), drives the first grinding disc (21) to rotate around its axis through the lower tray (16) connected thereto; the upper tray (15 ) is connected with the slide table (14); During grinding, the first grinding disc (21) rotates around its axis; the slide table (14) is bounded by the column (12) or other guide components, together with the upper tray (15) connected thereto, And the second grinding disc (22) that is connected with the described upper pallet approaches to the described first grinding disc (21) along the described second grinding disc axis (223), and is distributed on the described first grinding disc ( 21) The processed cylindrical rollers (3) in each linear groove (2111) apply working pressure; The roller feeding mechanism (45) is respectively installed at the entrances (22118) of the spiral grooves of the second grinding disc, and is used to connect any linear groove entrance (21118) of the first grinding disc with the When the spiral groove entrance (22118) intersects, a processed cylindrical roller (3) is pushed into the linear groove entrance (21118); Corresponding to host machine type 2: The main shaft device (18) is installed on the slide table (14), drives the second grinding disc (22) to rotate around its axis through the upper tray (15) connected thereto; the lower tray (16 ) is installed on the base (11); During grinding, the second grinding disc (22) rotates around its axis; the slide table (14) is bounded by the column (12) or other guide components, together with the main shaft device (18), The upper tray (15) connected to the main shaft device (18), and the second grinding disc (22) connected to the upper tray (15) move toward the first grinding disc along the second grinding disc axis (223). The grinding disc (21) approaches, and applies working pressure to the processed cylindrical rollers (3) distributed in the linear grooves (2111) of the first grinding disc (21); The roller feeding mechanism (45) is respectively installed at the inlets (21118) of the linear grooves of the first grinding disc, and is used to connect any spiral groove inlet (22118) of the second grinding disc with the Pushing a processed cylindrical roller (3) into the linear groove entrance (21118) when the linear groove entrance (21118) intersects; Corresponding to the main machine type three: Two sets of spindle devices (18) are provided, wherein one set of spindle devices (18) is installed on the base (11), and the first grinding disc (21) is driven by the lower tray (16) connected thereto Rotating around its axis, another set of spindle device (18) is installed on the slide table (14), and drives the second grinding disc (22) to rotate around its axis through the upper tray (15) connected to it; The two sets of spindle devices (18) are all provided with a locking mechanism, and only one of the first grinding disc (21) and the second grinding disc (22) is allowed to rotate at the same time, while the other grinding disc is in a circumferentially locked state ; When the grinding disc set (2) of the grinding equipment rotates for grinding in mode one, the relative movement of the first grinding disc (21) and the second grinding disc (22) is the same as that of the main machine type one; The installation position and effect of the roller feeding mechanism (45) are the same as the main mechanism type one; When the grinding disc set (2) of the grinding equipment rotates for grinding in mode two, the relative movement of the first grinding disc (21) and the second grinding disc (22) is the same as that of the main machine type two; The installation position and effect of the roller feeding mechanism (45) are the same as those of the main mechanism type two. 5. The grinding equipment for finishing the cylindrical roller rolling surface according to claim 4, characterized in that, during grinding, the base surface of the first grinding disc (214) and the base surface of the second grinding disc ( 224) overlap; the transition surface (2112) connecting adjacent linear grooves on the first grinding disc front (211) and the transition surface (2212) connecting adjacent spiral grooves on the second grinding disc front (221) There are gaps in between. 6. A grinding method for finishing the rolling surface of cylindrical rollers, characterized in that, using the grinding equipment for finishing the rolling surfaces of cylindrical rollers as claimed in claim 4 or 5, and comprising the following steps: Step 1. The second grinding disc (22) approaches the first grinding disc (21) along its axis until the linear groove working surface (21111) of the first grinding disc and the spiral groove working surface (22111) of the second grinding disc ) can and can only accommodate one cylindrical roller (3) to be processed until the space of each grinding processing area enclosed by it; Step 2, corresponding to the rotation mode 1 of the grinding disc set (2), the first grinding disc (21) rotates around its axis relative to the second grinding disc (22) at a low speed of 1 to 10 rpm; corresponding to the grinding disc set (2) Rotation mode 2, the second grinding disc (22) rotates at a low speed of 1 to 10 rpm around its axis relative to the first grinding disc (21); Step 3, start the roller conveying system (43), the roller finishing mechanism (44) and the roller feeding mechanism (45); adjust the feeding speed of the roller feeding mechanism (45) to make it the same as the first grinding disc ( 21) match the relative speed of rotation of the second grinding disc (22); adjust the delivery speed of the roller delivery system (43) and the finishing speed of the roller finishing mechanism (44) to make it match the roller feeding mechanism (45) The feeding speed is matched; thereby establishing the linear feeding of the processed cylindrical roller (3) between the first grinding disc (21) and the second grinding disc (22) along the linear groove base line (21116) and passing through the roller The cycle of collecting, conveying, sorting and feeding of the sub-circulation off-disk system (4); Step 4. Adjust the relative rotational speed of the first grinding disc (21) and the second grinding disc (22) to the relative working rotational speed of 15-60 rpm, and adjust the feeding speed of the roller feeding mechanism (45) to the working feeding speed. The speed makes it match with the relative working speed of rotation of the first grinding disc (21) and the second grinding disc (22), adjust the conveying speed of the roller conveying system (43) and the finishing speed of the roller finishing mechanism (44), Make the roller collection mechanism (41), the roller conveying system (43), the roller sorting mechanism (44) and the roller feeding mechanism (45) in the above-mentioned roller circulation system (4) all the processed cylinders The inventory of the rollers (3) is matched and the circulation is smooth and orderly; Step 5, filling the grinding area with grinding liquid; Step 6, the second grinding disc (22) is further approaching the first grinding disc (21) along its axis, so that the rolling surfaces (32) of the processed cylindrical rollers in the grinding processing area are respectively in line with the first grinding disc The surface contact of the groove working surface (21111) and the line contact with the working surface one (221111) of the spiral groove of the second grinding disc, and the processed cylindrical rollers (3) distributed in the grinding processing area are processed by an average of each An initial working pressure of 0.5-2N is applied to the processed cylindrical roller; the processed cylindrical roller (3) performs continuous rotational motion around its own axis (31) under the friction drive of the spiral groove working surface (22111) of the second grinding disc; At the same time, the processed cylindrical roller (3) makes a linear feed motion along the linear groove baseline (21116) of the first grinding disc under the continuous pushing action of the spiral groove working surface (22111); the processed cylindrical roller The rolling surface (32) of the first grinding disc begins to undergo the grinding process of the linear groove working surface (21111) of the first grinding disc and the working surface one (221111) of the spiral groove of the second grinding disc; Step 7. With the stable operation of the grinding process, gradually increase the working pressure on the processed cylindrical rollers (3) distributed in the grinding processing area to the average normal working pressure of 2-50N for each processed cylindrical roller; The cylindrical roller (3) maintains the contact relationship with the linear groove working surface (21111) of the first grinding disc and the spiral groove working surface (22111) of the second grinding disc in step 6, and continuously rotates around its own axis (31) Motion and linear feed motion along the linear groove base line (21116), its rolling surface (32) continues to experience the linear groove working surface (21111) of the first grinding disc and the working surface one (221111) of the second grinding disc spiral groove ) grinding process; Step 8. After a period of grinding, conduct spot checks on the processed cylindrical rollers (3); when the surface quality, shape accuracy and dimensional consistency of the rolling surfaces (32) of the processed cylindrical rollers to be spot-checked have not yet reached When the technical requirements are required, continue the grinding process of this step; when the surface quality, shape accuracy and dimensional consistency of the rolling surface (32) of the processed cylindrical roller being sampled meet the technical requirements, enter step nine; Step 9. Gradually reduce the working pressure and finally reach zero; stop the operation of the roller conveying system (43), the roller finishing mechanism (44) and the roller feeding mechanism (45), adjust the first grinding disc (21) and the second The relative rotational speed of the two grinding discs (22) reaches zero; the filling of grinding fluid to the grinding processing area is stopped; the second grinding disc (22) returns to the non-working position along its axis. 7. according to the described grinding method of cylindrical roller rolling surface finish machining according to claim 6, it is characterized in that, the second grinding disc (22) of the grinding disc set (2) in the grinding equipment used is provided with magnetic structure inside, The roller circulation outer system (4) in the used grinding equipment also includes a roller demagnetization device, which is different from the grinding method described in claim 6 only: In step 3, start the roller demagnetization device at the same time; In step six, before applying initial working pressure to the processed cylindrical rollers (3) distributed in the grinding processing area, the magnetic structure enters the working state; While applying the initial working pressure, adjust the magnetic field strength of the magnetic structure, so that the spiral groove working surface (22111) of the second grinding disc has a sliding friction driving torque generated by the rotation of the processed cylindrical roller (3) around its own axis (31) It is larger than the sliding friction resistance moment generated by the linear groove working surface (21111) of the first grinding disc to the processed cylindrical roller (3) rotating around its own axis (31), thereby driving the processed cylindrical roller to continuously rotate around its own axis. rotational movement; In step nine, after adjusting the relative rotation speed of the first grinding disc (21) and the second grinding disc (22) to zero, the magnetic structure is switched to a non-working state, and the operation of the roller demagnetization device is stopped. 8. according to claim 6 or 7 described grinding method for cylindrical roller rolling surface finishing, it is characterized in that, before described first grinding disc (21) and second grinding disc (22) are used for the first time, utilize The processed cylindrical rollers (3) with the same geometric parameters run-in the linear groove working surface (21111) of the first grinding disc and the spiral groove working surface (22111) of the second grinding disc; the grinding-in method is the same as that of the processed cylindrical roller The grinding method of the rollers (3) is the same; for step 8, carry out sampling inspection on the processed cylindrical rollers (3) participating in the running-in, when the surface quality and shape accuracy of the rolling surface (32) of the processed cylindrical rollers to be sampled are When the consistency of size and size meets the technical requirements, the running-in process enters step nine; otherwise, proceed to step eight. 9. The grinding method for cylindrical roller rolling surface finishing according to claim 7, characterized in that, the second grinding disc (22) of the grinding disc set (2) in the grinding equipment used is provided with a magnetic structure inside , one of the following two situations: Case 1: When the processed cylindrical roller (3) made of ferromagnetic material is ground by the consolidated abrasive grinding method, a magnetic structure is arranged inside the second grinding disc (22), and the magnetic field strength of the magnetic structure is adjusted so that The spiral groove working surface (22111) of the second grinding disc produces a greater sliding friction driving torque when the processed cylindrical roller (3) made of ferromagnetic material rotates around its own axis (31) than the first grinding disc The linear groove working surface (21111) of the ferromagnetic material is processed by the sliding friction resistance moment generated by the rotation of the ferromagnetic cylindrical roller (3) around its own axis (31), thereby driving the ferromagnetic material to be processed. The roller (3) rotates continuously around its own axis (31); Situation 2: When using the free abrasive grinding method to grind the processed cylindrical roller (3) made of ferromagnetic material, the second grinding disc (22) has a built-in magnetic structure to increase the spiral groove of the second grinding disc. The surface (22111) reacts to the sliding friction driving torque generated by the processed cylindrical roller (3) made of ferromagnetic material rotating around its own axis (31), so that the processed cylindrical roller (3) made of ferromagnetic material rotates around its own axis (31). The continuous rotation of its own axis (31) is not restricted by the matching of the material of the linear groove working surface (21111) of the first grinding disc and the material of the spiral groove working surface (22111) of the second grinding disc.

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