CN112139951A - A super-precision integrated machine tool for grinding tapered roller ball base surface - Google Patents

Abstract

The invention discloses a tapered roller ball base surface grinding super-precision integrated machine tool, which belongs to the technical field of tapered roller super-precision. The existing equipment for grinding the ball base surface of tapered rollers has problems such as difficulty in adjustment, unstable dimensional accuracy, and long replacement time. The invention includes a machine bed, a workpiece positioning and arranging mechanism, a tapered roller ball base surface grinding mechanism, a superfinishing mechanism and a dressing mechanism. The tapered roller of the present invention directly performs super-precision work after the grinding of the ball base surface, so that the tapered roller improves the roughness. The invention not only improves the dimensional accuracy of the spherical base surface, but also saves the time for changing models, reduces the difficulty of adjustment, and can meet production requirements without other auxiliary equipment.

Description

A super-precision integrated machine tool for grinding tapered roller ball base surface

technical field

The invention belongs to the technical field of tapered roller superfinishing, and particularly relates to a tapered roller ball base surface grinding superfinishing integrated machine tool.

Background technique

At present, the equipment for grinding the ball base surface of tapered rollers has many problems such as difficulty in adjustment, unstable dimensional accuracy, and long time for replacement. However, the investment cost of foreign equipment procurement is very large, and the after-sales service cycle is long, and it is necessary to cooperate with auxiliary equipment to achieve the same technical conditions.

SUMMARY OF THE INVENTION

Aiming at the problems of difficult adjustment, unstable dimensional accuracy, and long time for changing the shape of the existing equipment for grinding the ball base surface of the tapered roller, the present invention aims to provide a super-precision integrated machine tool for grinding the ball base surface of the tapered roller. , has the characteristics of saving time for changing type and high production efficiency.

To this end, the present invention adopts the following technical scheme: a tapered roller ball base surface grinding super-precision integrated machine tool, including a bed, a workpiece positioning and arrangement mechanism, a tapered roller ball base surface grinding mechanism, a super-finishing mechanism and a dressing mechanism ;

The workpiece positioning and arranging mechanism includes an upper workpiece shaft mechanism and a lower workpiece shaft mechanism, and the upper workpiece shaft mechanism includes an upper workpiece shaft, an upper workpiece chuck and an upper workpiece shaft rotational drive mechanism, and the upper workpiece shaft rotational drive mechanism is mounted on the upper workpiece shaft. On the upright column formed on the back side of the bed, the upper workpiece shaft is drive-connected with the upper workpiece shaft rotational drive mechanism, the upper workpiece chuck is fixedly installed on the bottom of the upper workpiece shaft, and the upper workpiece The shaft mechanism is driven up and down by the upper workpiece shaft lifting and lowering drive mechanism; the lower workpiece shaft mechanism includes a lower workpiece shaft, a lower workpiece chuck, a workpiece material separation isolation plate and a lower workpiece shaft rotation drive mechanism, and the lower workpiece chuck and The workpiece material separating and isolating disc is sequentially sleeved on the top of the lower workpiece shaft from bottom to top, the bottom of the lower workpiece shaft is drive-connected with the lower workpiece shaft rotational drive mechanism, and the lower workpiece shaft rotational drive mechanism is mounted on the bed; The rotational driving mechanism of the upper workpiece shaft and the rotational driving mechanism of the lower workpiece shaft have opposite driving directions; a plurality of workpiece accommodating grooves evenly distributed along the circumference are provided at the outer edge of the workpiece material separating and isolating disc. The workpiece chuck is directly opposite to the lower workpiece chuck; the circumferential direction of the workpiece separation and isolation disk is provided with a feeding mechanism, a feeding mechanism and at least one group of the super-finishing mechanism facing the accommodating groove. ;

The tapered roller ball base surface grinding mechanism includes a grinding wheel, a grinding wheel drive mechanism, an X-axis feed mechanism and a Y-axis feed mechanism. On the sliding table of the Y-axis feeding mechanism, the Y-axis feeding mechanism is installed on the sliding table of the X-axis feeding mechanism;

The trimming mechanism is arranged on the bed.

As a supplement and improvement to the above technical solutions, the present invention also includes the following technical features.

The trimming mechanism includes a correction diamond pen, a fixed seat, a diamond pen connecting arm and a connecting arm lifting drive mechanism, the diamond pen is mounted on the diamond pen base, the diamond pen connecting arm is L-shaped, and the diamond pen base is in the shape of an L. It is installed on one end of the diamond pen connecting arm, the other end of the diamond pen connecting arm is hinged on the fixing seat through the rotating shaft, and the connecting arm lifting drive mechanism is connected to the middle section of the diamond pen connecting arm.

The upper workpiece shaft mechanism is mounted on a worktable, the worktable is slidably mounted on the upright column through guide rails and sliders, and the worktable is driven to rise and fall by the upper workpiece shaft lift drive mechanism.

The lifting and lowering driving mechanism of the upper workpiece shaft is a manual and/or electric driven screw-nut pair mechanism.

The rotation driving mechanism of the upper workpiece shaft and the rotation driving mechanism of the lower workpiece shaft are motors.

A plurality of hollow placement racks are formed on the upright column.

The grinding wheel drive mechanism is an electric spindle.

The super-fine mechanism includes a cylinder, a whetstone push plate, a whetstone pressure plate and a whetstone, the whetstone push plate is connected with the piston rod of the cylinder through a connecting seat, and the whetstone pressure plate is arranged on the whetstone push plate. The accommodating groove is arranged on the front side between the oil stone push plate and the oil stone pressing plate and is facing opposite.

A plurality of groups of the super-precision mechanisms are installed through a base plate, the base plate is arc-shaped, a plurality of long grooves arranged in the radial direction are arranged on the base plate, and the cylinder seat for fixing the installation cylinder is provided with installation holes matched with the long grooves; A plurality of adjustment plates are arranged under the base plate, T-shaped grooves are arranged on the adjustment plates, support columns are arranged in the T-shaped grooves, and the tops of the support columns are connected with the base.

The working principle of the present invention is as follows: the tapered roller enters the accommodating groove of the workpiece separation disc through the feeding mechanism, the bottom of the upper chuck and the bottom of the lower chuck clamp the workpiece, and the workpiece rotates relative to itself due to friction, and moves forward to enter Grinding area with grinding wheel. There is contact grinding brought about by the rotation of the grinding wheel and the rotation of the workpiece, which realizes the grinding of the spherical base surface of the tapered roller. The rotation of the tapered roller, through the pressurized whetstone area, realizes the super-precision work of the ball base surface of the tapered roller. After super-finishing through the whetstone, it reaches the discharge port at the end, and then enters the next process to continue production.

The present invention can achieve the following beneficial effects: 1. The tapered roller of the present invention directly performs super-finishing work after the grinding of the ball base surface, thereby improving the roughness of the tapered roller. The invention not only improves the dimensional accuracy of the spherical base surface, but also saves the time for changing models, reduces the difficulty of adjustment, and can meet production requirements without other auxiliary equipment.

2. The equipment input cost of the present invention is much lower than that of foreign equipment, and the processing accuracy is high, and the model changing speed is fast.

3. The present invention can realize the grinding of the upper and lower tooling chucks by replacing the grinding wheel assembly and trimming the grinding wheel into an inclined plane through servo interpolation and trimming. The upper and lower tooling discs can be repaired at the same time, which saves the time of grinding discs in the process of changing tooling and improves the efficiency of changing.

Description of drawings

FIG. 1 is a schematic diagram of the three-dimensional structure of the present invention.

FIG. 2 is a schematic structural diagram of the upper workpiece shaft mechanism of the present invention.

3 is a schematic structural diagram of the lower workpiece shaft mechanism of the present invention.

FIG. 4 is a schematic structural diagram of the grinding mechanism of the tapered roller ball base surface of the present invention.

FIG. 5 is a schematic structural diagram of the ultra-fine mechanism of the present invention.

FIG. 6 is a schematic diagram of the mortgage structure of the ultra-precision mechanism of the present invention.

FIG. 7 is a schematic structural diagram of the trimming mechanism of the present invention.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The described embodiments are only descriptions and explanations of the present invention, and do not constitute the only limitation of the present invention.

As shown in FIGS. 1-7 , the present invention includes a bed 1 , a workpiece positioning and arranging mechanism 3 , a tapered roller ball base surface grinding mechanism 2 , a superfinishing mechanism 4 and a superfinishing mechanism 5 .

The workpiece positioning and arrangement mechanism 3 includes an upper workpiece shaft mechanism and a lower workpiece shaft mechanism. The upper workpiece shaft mechanism includes an upper workpiece shaft 31, an upper workpiece chuck 32 and an upper workpiece shaft rotational drive mechanism 33. The upper workpiece shaft rotational drive mechanism 33 is installed on the bed On the upper workpiece shaft lifting drive mechanism 6 formed on the back side, the upper workpiece shaft 31 is connected to the upper workpiece shaft rotation driving mechanism 33 in a transmission connection, the upper workpiece chuck 32 is fixedly installed on the bottom of the upper workpiece shaft 31, and the upper workpiece shaft mechanism passes through. The upper workpiece shaft lifting and lowering drive mechanism 34 drives the lifting and lowering; the lower workpiece shaft mechanism includes a lower workpiece shaft 36, a lower workpiece chuck 37, a workpiece material distribution isolation disk 38 and a lower workpiece shaft rotation drive mechanism, and the lower workpiece chuck 37 is isolated from the workpiece material distribution The disc 38 is sequentially sleeved on the top of the lower workpiece shaft 36 from bottom to top, the bottom of the lower workpiece shaft 36 is connected with the lower workpiece shaft rotational drive mechanism in a transmission connection, and the lower workpiece shaft rotational drive mechanism is installed on the bed 1; the upper workpiece shaft is rotated and driven The drive and rotation directions of the mechanism and the lower workpiece shaft rotational drive mechanism are opposite; the outer edge of the workpiece material separation isolating disk 38 is provided with a plurality of workpiece accommodating grooves evenly distributed along the circumference, and the upper workpiece chuck 32 and the lower workpiece chuck 37 are directly opposite; The workpiece separating disc 38 is provided with a feeding mechanism 7, a feeding mechanism 8 and up to 4 sets of super-finishing mechanisms 4 facing the accommodating groove in the circumferential direction of the workpiece separation disc 38. The super-finishing mechanism includes a cylinder 42, an oil stone push plate 43, and an oil stone pressure plate 44. With the oil stone 41, the oil stone push plate 43 is connected with the piston rod of the cylinder 42 through the connecting seat, the oil stone pressure plate 44 is arranged on the oil stone push plate 43, and the oil stone 41 is arranged on the front side between the oil stone push plate 43 and the oil stone pressure plate 44. the described accommodating slot. The three groups of ultra-precision mechanisms arranged in a circle are installed by the base plate 45, the base plate 45 is arc-shaped, and the base plate 45 is provided with a plurality of long grooves arranged in the radial direction, and the cylinder seat of the fixed installation cylinder is provided with a mounting hole matched with the long groove; A plurality of adjustment plates 46 are arranged below the base plate 45, the adjustment plate 46 is provided with a T-shaped groove, an adjustment plate 47 is arranged in the T-shaped groove, and the top of the adjustment plate 47 is connected with the base 45; the tapered roller ball base surface is ground The mechanism includes grinding wheel 21, grinding wheel driving mechanism 22, X axial feeding mechanism 23 and Y axial feeding mechanism 24. The grinding wheel is connected with the grinding wheel driving mechanism, and the grinding wheel driving mechanism is installed on the sliding table of the Y axial feeding mechanism. , the Y-axis feed mechanism is installed on the slide table of the X-axis feed mechanism. The grinding wheel is facing the side of the accommodating groove;

The trimming mechanism is arranged on the bed 1, and the trimming mechanism includes a diamond pen 51, a fixed seat 53, a diamond pen connecting arm 52 and a connecting arm lifting drive mechanism 54, the diamond pen 51 is installed on the diamond pen seat, and the diamond pen connecting arm 52 is L. Type, the diamond pen seat is installed on one end of the diamond pen connecting arm 52, the other end of the diamond pen connecting arm 52 is hinged on the fixed seat 53 through the rotating shaft, and the connecting arm lifting drive mechanism 54 is connected to the middle section of the diamond pen connecting arm 52. .

As an embodiment, preferably, the upper workpiece shaft mechanism is installed on a worktable 39, the worktable 39 is slidably installed on the upper workpiece shaft lifting drive mechanism 6 through the guide rail and the slider, and the worktable 39 is driven to rise and fall by the upper workpiece shaft lifting driving mechanism . The lifting and driving mechanism of the upper workpiece shaft is a structure in which a hand rocker and a motor cooperate with a deceleration motor, and the deceleration motor is connected with the worktable through a screw nut pair mechanism.

As an embodiment, preferably, the rotation driving mechanism of the upper workpiece shaft and the rotation driving mechanism of the lower workpiece shaft are motors.

Preferably, as an embodiment, a plurality of hollow placement racks 35 are formed on the upper workpiece shaft lifting and lowering drive mechanism 6 .

As an embodiment, preferably, the grinding wheel driving mechanism 22 is an electric spindle. As an example, all motors, cylinders and electro-spindles are covered by a dust cover.

The invention adopts the single-column gantry design principle, and the moving part of the upper shaft is designed at the center of the workpiece shaft, which greatly improves the force-bearing point of the tooling chuck, and makes the force of the tapered roller more uniform and stable. Using the top electric lift to adjust the workpiece chuck + manual fine adjustment of the workpiece chuck, the adjustment accuracy is provided to a greater extent, and the high-precision quantitative adjustment method is realized.

In addition, the present invention also adopts a refined electronic display device to provide a quantitative visualization operation for equipment adjustment and a visualization solution for realizing precise equipment adjustment. The equipment adopts a lift-up grinding wheel dresser, which avoids the trouble of repeated installation and disassembly of the grinding wheel when grinding the disc, and semi-automatic control is convenient and fast. The invention adopts the self-developed high-precision multi-level compensation dressing grinding wheel, and the grinding wheel compensation amount can be set in sections according to the user's needs, so as to reduce the linear change of the size caused by the dressing during the grinding process. The invention provides a high-precision self-centering super-precision mechanism and a whetstone anti-collision device, which is used to improve the working condition that the super-essential oil stone is not in the center of the workpiece, resulting in large dispersion of precision after super-precision. The case where the oil stone is broken during the refining process.

Claims (9)

1. The utility model provides a super integrative lathe of conical roller ball base surface grinding which characterized in that: the conical roller spherical base surface grinding and superfinishing integrated machine tool comprises a machine body (1), a workpiece positioning and arranging mechanism (3), a conical roller spherical base surface grinding mechanism (2), a superfinishing mechanism (4) and a superfinishing mechanism (5);

the workpiece positioning and arranging mechanism (3) comprises an upper workpiece shaft mechanism and a lower workpiece shaft mechanism, the upper workpiece shaft mechanism comprises an upper workpiece shaft (31), an upper workpiece chuck (32) and an upper workpiece shaft rotation driving mechanism (33), the upper workpiece shaft rotation driving mechanism (33) is installed on an upper workpiece shaft lifting driving mechanism (6) formed on the rear side of the lathe bed, the upper workpiece shaft (31) is in transmission connection with the upper workpiece shaft rotation driving mechanism (33), the upper workpiece chuck (32) is fixedly installed at the bottom of the upper workpiece shaft (31), and the upper workpiece shaft mechanism is driven to lift through the upper workpiece shaft lifting driving mechanism (34); the lower workpiece shaft mechanism comprises a lower workpiece shaft (36), a lower workpiece chuck (37), a workpiece distributing and isolating disc (38) and a lower workpiece shaft rotation driving mechanism, the lower workpiece chuck (37) and the workpiece distributing and isolating disc (38) are sequentially sleeved on the top of the lower workpiece shaft (36) from bottom to top, the bottom of the lower workpiece shaft (36) is in transmission connection with the lower workpiece shaft rotation driving mechanism, and the lower workpiece shaft rotation driving mechanism is installed on the lathe bed (1); the driving rotation directions of the upper workpiece shaft rotation driving mechanism and the lower workpiece shaft rotation driving mechanism are opposite; a plurality of workpiece accommodating grooves which are uniformly distributed along the circumference are formed in the outer edge of the workpiece distributing and isolating disc (38), and the upper workpiece chuck (32) is opposite to the lower workpiece chuck (37); a feeding mechanism (7), a discharging mechanism (8) and at least one group of superfinishing mechanisms (4) which are opposite to the accommodating groove are arranged in the circumferential direction of the workpiece distributing and isolating disc (38);

the grinding mechanism for the spherical base surface of the conical roller comprises a grinding wheel (21), a grinding wheel driving mechanism (22), an X axial feeding mechanism (23) and a Y axial feeding mechanism (24), wherein the grinding wheel is in transmission connection with the grinding wheel driving mechanism, the grinding wheel driving mechanism is installed on a sliding table of the Y axial feeding mechanism in a transmission way, and the Y axial feeding mechanism is installed on the sliding table of the X axial feeding mechanism;

the trimming mechanism is arranged on the lathe bed (1).

2. The conical roller ball base surface grinding superfinishing integrated machine tool according to claim 1, characterized in that: trimming mechanism include buddha's warrior attendant pen (51), fixing base (53), buddha's warrior attendant pen connecting arm (52) and connecting arm lifting actuating mechanism (54), buddha's warrior attendant pen (51) are installed on buddha's warrior attendant pen stand, buddha's warrior attendant pen connecting arm (52) be the L type, buddha's warrior attendant pen stand install in wherein one end of buddha's warrior attendant pen connecting arm (52), the other one end of buddha's attendant pen connecting arm (52) articulate in fixing base (53) through the pivot activity, connecting arm lifting actuating mechanism (54) connect in the middle section department of.

3. The conical roller ball base surface grinding superfinishing integrated machine tool according to claim 2, characterized in that: the upper workpiece shaft mechanism is arranged on a workbench (39), the workbench (39) is slidably arranged on the upper workpiece shaft lifting driving mechanism (6) through a guide rail and a sliding block, and the workbench (39) is driven to lift through the upper workpiece shaft lifting driving mechanism.

4. The conical roller ball base surface grinding superfinishing integrated machine tool according to claim 3, characterized in that: the upper workpiece shaft lifting driving mechanism is a lead screw nut pair mechanism driven manually and/or electrically.

5. The conical roller ball base surface grinding superfinishing integrated machine tool according to claim 4, characterized in that: the upper workpiece shaft rotation driving mechanism and the lower workpiece shaft rotation driving mechanism are motors.

6. The conical roller ball base surface grinding superfinishing integrated machine tool according to claim 5, characterized in that: and a plurality of hollow placing racks (35) are formed on the upper workpiece shaft lifting driving mechanism (6).

7. The conical roller ball base surface grinding superfinishing integrated machine tool according to claim 6, characterized in that: the sand wheel driving mechanism (22) is an electric spindle.

8. The conical roller ball base surface grinding superfinishing integrated machine tool according to claim 7, characterized in that: super smart mechanism include cylinder (42), oilstone push pedal (43), oilstone clamp plate (44) and oilstone (41), oilstone push pedal (43) with the piston rod of cylinder (42) pass through the connecting seat and connect, oilstone clamp plate (44) set up on oilstone push pedal (43), oilstone (41) set up in the front side between oilstone push pedal (43) and oilstone clamp plate (44) and just to the holding tank just described.

9. The conical roller ball base surface grinding superfinishing integrated machine tool according to claim 8, characterized in that: the plurality of groups of superfinishing mechanisms are mounted through a substrate (45), the substrate (45) is arc-shaped, a plurality of elongated slots arranged along the radial direction are formed in the substrate (45), and a cylinder seat fixedly provided with a cylinder is provided with a mounting hole matched with the elongated slots; the lower part of base plate (45) be provided with polylith adjusting plate (46), be provided with T type groove on adjusting plate (46), set up adjusting plate (47) in the T type groove, the top of adjusting plate (47) with base (45) be connected.

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