CN114367900B - Device and method for grinding end spherical surface of shaft part - Google Patents

Device and method for grinding end spherical surface of shaft part Download PDF

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Publication number
CN114367900B
CN114367900B CN202111268343.2A CN202111268343A CN114367900B CN 114367900 B CN114367900 B CN 114367900B CN 202111268343 A CN202111268343 A CN 202111268343A CN 114367900 B CN114367900 B CN 114367900B
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CN
China
Prior art keywords
roller
processed
sliding block
support plate
block
Prior art date
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Active
Application number
CN202111268343.2A
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Chinese (zh)
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CN114367900A (en
Inventor
胡永文
赵建华
张涛
杨晨
贾双良
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AECC Aero Engine Xian Power Control Technology Co Ltd
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AECC Aero Engine Xian Power Control Technology Co Ltd
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Priority to CN202111268343.2A priority Critical patent/CN114367900B/en
Publication of CN114367900A publication Critical patent/CN114367900A/en
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Publication of CN114367900B publication Critical patent/CN114367900B/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B11/00—Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work; Accessories therefor
    • B24B11/02—Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work; Accessories therefor for grinding balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/16—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces performing a reciprocating movement, e.g. during which the sense of rotation of the working-spindle is reversed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

The invention relates to a device and a method for grinding an end spherical surface of a shaft part, which solve the problems of complex processing process, low precision and the like in the existing processing method. The support plate in the device is fixed on the upper surface of the base; one end of the sliding block is hinged on the base, and the other end of the sliding block is matched with the support plate; the first support block is fixed on the sliding block; the first roller is sleeved on the part, and the first roller can drive the part to rotate on the two v-shaped brackets of the first supporting block; one end of the bracket is fixedly arranged on the sliding block; one end of the measuring rod passes through the mounting hole on the bracket, and the end face is tightly propped against the non-processing end part of the part; the driving mechanism is fixed on the sliding block and used for driving the first roller to rotate; the part rotates around the axial center lines of the two v-shaped brackets under the drive of the first roller, the O point is used as the center of a circle under the drive of the sliding block to do circular reciprocating swing, and the grinding work of the axial surface of the part to be processed is completed through the linkage of the two movement modes, so that the processing quality is good and the efficiency is high.

Description

Device and method for grinding end spherical surface of shaft part
Technical Field
The invention relates to a device and a method for grinding an end spherical surface of a shaft part, which can meet the requirement of part machining precision.
Background
The shaft part is one of the common parts in various mechanical products, and the end part of the shaft part is usually in a spherical structure (roughness is 0.2) due to functional requirements, as shown in fig. 1. If the end face of the spherical grinding wheel is directly machined by adopting a common grinding machine, the spherical grinding wheel cannot finish the spherical grinding at one time due to the limitation of the movement track of the grinding wheel, the spherical grinding can be finished by adopting modes such as manual polishing, and the like, the machining process is complex and the machining precision is low.
Disclosure of Invention
The invention aims to provide a device and a method for grinding the end part spherical surface of a shaft part, which are used for solving the problems of complex processing process, low precision and the like in the existing processing method. The device is used for realizing positioning and clamping of the part to be machined, and can finish machining by matching with a common machine tool, and the machining process is simple and the precision is high.
The technical scheme of the invention is to provide a device for grinding the end sphere of a shaft part, which is characterized in that: comprises a base, a support plate, a sliding block, a first support block, a first roller, a bracket, a measuring rod and a driving mechanism;
the support plate is fixed on the upper surface of the base;
one end of the sliding block is hinged on the base, the other end of the sliding block is matched with the support plate, and under the action of external force, the sliding block can take a hinging point as a circle center and be marked as an O point, and the sliding block performs circular reciprocating motion on the support plate relative to the base;
the first support block is fixed on the sliding block, and two v-shaped brackets are arranged on the first support block and used for supporting the first roller and the part to be processed;
the axial length of the first roller is smaller than that of the part to be processed, and the first roller is sleeved on the part to be processed; the two ends of the part to be processed, which are exposed out of the first roller, are respectively pressed on the two v-shaped brackets on the first supporting block, and can rotate on the two v-shaped brackets under the drive of the first roller;
one end of the bracket is fixedly arranged on the sliding block, and the other end of the bracket is provided with a mounting hole;
one end of the measuring rod passes through the mounting hole on the bracket, and the end face is tightly propped against the end part of the non-processing end of the part to be processed;
the driving mechanism is fixed on the sliding block and used for driving the first roller to rotate, so that the part to be processed is driven to rotate on the two v-shaped brackets on the first supporting block;
when the spherical surface to be processed of the part to be processed is processed, the radial position of the part to be processed is adjusted to be coaxial with the point O by adjusting the position of the first supporting block, the spherical center of the spherical surface to be processed of the part to be processed is adjusted to be positioned at the point O by adjusting the measuring rod, the spherical surface to be processed is enabled to be in contact with the excircle of the grinding wheel, and the stress is uniform; the driving mechanism drives the first roller to rotate, the first roller drives the part to be processed to rotate on the two v-shaped brackets on the first supporting block, and the sliding block is rotated to enable the part to be processed to rotate and simultaneously rotate by taking the O point as the circle center to do circumferential reciprocating swing, so that grinding is realized.
Further, the driving mechanism comprises a motor and a driving assembly;
the driving assembly comprises a second supporting block, a screw rod, a second roller and a third roller;
the second supporting block is fixed on the sliding block, the screw is positioned on the second supporting block, and the second roller and the third roller are respectively fixed on small shafts at two ends of the screw;
a transmission belt is arranged between the output wheel of the motor and the second roller, and a transmission belt is arranged between the third roller and the first roller; the two ends of the part to be processed, which are exposed out of the first roller, are respectively pressed on two v-shaped brackets on the first supporting block through a transmission belt arranged between the third roller and the first roller;
when the motor works, the output wheel drives the second roller, the small shaft and the third roller to rotate through the transmission belt, and drives the first roller to rotate through the transmission belt between the third roller and the first roller, so that the part to be processed is driven to rotate on the two v-shaped brackets.
Further, the support plate may be a circular arc-shaped guide plate, and the other end of the sliding block is in contact with the support plate.
Further, the central angle of the circular arc-shaped guide plate is 90 degrees.
Further, to facilitate rotation of the slider, the device further includes a handle; one end of the sliding block is hinged on the base through a screw, and the other end of the sliding block is fixed with the handle; the handle is pushed to drive the sliding block to do circular reciprocating motion on the support plate relative to the base by taking the screw as the circle center.
In order to further improve the circular motion precision, a gap is arranged between the support plate and the base; the size of the gap is L, wherein L is smaller than the thickness of the sliding block;
a guide block with the thickness smaller than L is arranged at the other end of the sliding block and below the handle, and the guide block is inserted into a gap between the support plate and the base; the lower surface of the handle is contacted with the upper end surface of the support plate, the handle is pushed, the guide block moves along the support plate, the sliding block is driven to do circular reciprocating motion on the support plate relative to the base by taking the screw as the circle center.
Further, the support plate is fixed on the base through the screw and the nut, and the gap between the support plate and the base is adjusted through adjusting the position of the nut on the screw.
Further, the support plate is a flat plate, a circular arc guide rail is arranged on the support plate, and the central angle of the circular arc guide rail is 90 degrees; the other end of the sliding block is provided with a guide block matched with the circular arc-shaped guide rail, the guide block can slide along the guide rail under the action of external force, the sliding block is driven to do circular reciprocating motion on the support plate relative to the base by taking the hinging point as the circle center.
The invention also provides a method for grinding the end spherical surface of the shaft part, which is characterized by comprising the following steps of:
step 1, sleeving a first roller on a part to be processed, and positioning the first roller and the part to be processed from the radial direction through a positioning pin;
step 2, fixing the assembly completed in the step 1 on a first supporting block, respectively pressing two ends of a part to be processed, which are exposed out of a first roller, on two v-shaped brackets on the first supporting block, adjusting the position of the first supporting block, enabling the radial position of the part to be processed to be coaxial with an O point, and enabling the part to be processed to be capable of rotating on the two v-shaped brackets under the driving of the first roller;
step 3, adjusting the bracket so that the measuring rod is coaxial with the part to be processed;
step 4, adjusting the axial position of the measuring rod to enable the end part of the measuring rod to be in contact with the end part of the non-processing end of the part to be processed;
step 5, fixing the device after adjustment on a machine tool, adjusting the axial position of a measuring rod to enable the spherical center of a to-be-processed spherical surface of a part to be processed to be positioned at an O point, enabling the to-be-processed spherical surface to be in contact with the excircle of a grinding wheel, and enabling the stress to be uniform;
step 6, starting a motor, and driving a driving mechanism to drive a first roller and a part to be processed to rotate;
and 7, pushing the sliding block to enable the part to be processed to rotate and simultaneously make circumferential reciprocating swing by taking the O point as the circle center, so as to realize grinding.
Further, in the step 2, the two ends of the part to be processed, which are exposed out of the first roller, are respectively pressed on the two v-shaped brackets on the first supporting block by a transmission belt arranged between the third roller and the first roller in the driving mechanism.
The beneficial effects of the invention are as follows:
1. according to the invention, the positions of the first supporting block and the measuring rod are adjusted to accurately position the part to be processed, so that the spherical center of the spherical surface to be processed is positioned at the point O; the part to be processed can rotate around the axial center line of the two v-shaped brackets of the first supporting block under the drive of the first roller, the O point is used as the center of a circle under the drive of the sliding block to do circular reciprocating swing, and the grinding work of the axial surface of the part to be processed is completed through the linkage of the two movement modes, so that the processing quality is good and the efficiency is high.
2. According to the invention, the transmission belt arranged between the third roller and the first roller enables the two ends of the part to be processed, which are exposed out of the first roller, to be respectively pressed on the two v-shaped brackets on the first supporting block, so that reliable pressing is realized, and the processing precision is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of a part to be machined;
FIG. 2 is a front view of an apparatus for grinding an end spherical surface of a shaft-like component according to an embodiment of the present invention;
FIG. 3 is a top view of an apparatus for grinding an end sphere of a shaft-type part according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a driving assembly according to an embodiment of the present invention;
the reference numerals in the drawings are:
the device comprises a base, a 2-support plate, a 3-handle, a 4-first screw, a 5-sliding block, a 6-support, a 7-second screw, an 8-pin, a 9-bolt, a 10-fastening screw, an 11-first roller, a 12-third screw, a 13-first nut, a 14-washer, a 15-fourth screw, a 16-second nut, a 17-measuring rod, a 18-second roller, a 19-fifth screw, a 20-screw, a 21-second support block, a 22-third roller, a 23-sixth screw, a 24-seventh screw, a 25-first support block and a 26-small shaft.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Further, in describing the embodiments of the present invention in detail, the cross-sectional view of the device structure is not partially enlarged to a general scale for convenience of description, and the schematic is only an example, which should not limit the scope of protection of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Also in the description of the present invention, it should be noted that the azimuth or positional relationship indicated by "up, down", etc. in terms are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first, second, third and the like" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The term "mounted, connected" is to be construed broadly in the present invention unless explicitly stated and limited otherwise, such as for example: can be fixedly connected, detachably connected or integrally connected: the components can be directly connected, or indirectly connected through an intermediate medium, or can be communicated with each other inside the two components. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 2 and 3, it can be seen that the device for grinding the end of the shaft part according to the present embodiment mainly comprises a base 1, a support plate 2, a slider 5, a handle 3, a first support block 25, a first roller 11, a bracket 6, a measuring rod 17, a driving mechanism, and the like.
As can be seen from the figure, the support plate 2 in this embodiment is a circular arc guide plate with a central angle of 90 °, and is fixed on the upper surface of the base 1 by three groups of fourth screws 15 and first nuts 13, and a washer 14 is further sleeved on the fourth screws 15, so that the washer is located between the head of the fourth screws 15 and the upper surface of the support plate 2, and by adjusting the position of the first nuts 13 on the fourth screws 15, the gap between the support plate 2 and the base 1 can be adjusted. In other embodiments, the support plate 2 may also be a flat plate, and is fixed on the upper surface of the base 1, and a circular arc guide rail with a central angle of 90 ° is arranged on the flat plate. One end of the sliding block 5 is hinged on the base 1 through a third screw 12, other hinging modes can be adopted in other embodiments, the other end of the sliding block 5 is matched with the support plate 2, and under the action of external force, the sliding block can take a hinging point as a circle center and be marked as an O point to perform circular reciprocating motion on the support plate 2 relative to the base 1. In this embodiment, in order to facilitate rotating the slider 5, the handle 3 is fixed at the other end of the slider 5 through the first screw 4, meanwhile, in order to improve the precision, a guide block is arranged at the other end of the slider 5 and below the handle 3, the guide block is inserted into a gap between the support plate 2 and the base 1, the lower surface of the handle 3 contacts with the upper end surface of the support plate 2, the handle 3 is pushed, the guide block moves along the support plate 2, and the slider 5 is driven to perform a circular reciprocating motion on the support plate 2 relative to the base 1 by taking the screw as a circle center. If the structure of the support plate 2 is a flat plate provided with a circular arc guide rail with a central angle of 90 degrees, the structure of the sliding block 5 can be correspondingly adjusted, for example, a guide block matched with the circular arc guide rail is arranged at the other end of the sliding block 5, and can slide along the guide rail under the action of external force to drive the sliding block 5 to do circular reciprocating motion on the support plate 2 relative to the base 1 by taking a hinging point as the center of a circle. The first supporting block 25 is fixed on the sliding block 5 through a pin 8, a bolt 9 and a seventh screw 24, and the front end of the first supporting block 25 is provided with two v-shaped brackets for supporting the first roller 11 and the part to be processed; the axial length of the first roller 11 is smaller than that of the part to be processed, the first roller 11 is sleeved on the part to be processed, and the first roller is positioned with the part to be processed from the radial direction through the fastening screw 10 or the positioning pin, so that the first roller 11 and the part to be processed are connected into a whole; the two ends of the part to be processed, which are exposed out of the first roller 11, are pressed on the two v-shaped brackets on the first supporting block 25, the radial position of the part to be processed is adjusted to be coaxial with the O point by adjusting the position of the first supporting block 25, and the part to be processed can rotate on the two v-shaped brackets under the drive of the first roller 11; specifically, the driving mechanism drives the first roller 11 to rotate, and referring to fig. 4, the driving mechanism of the present embodiment includes a motor and a driving assembly, and the driving assembly includes a second supporting block 21, a screw 20, a second roller 18, and a third roller 22. The screw rod 20 is fixed on the sliding block 5 through a second supporting block 21 and a second nut 16, and the second roller 18 and the third roller 22 are respectively fixed at two ends of a small shaft 26 in a hole of the screw rod 20 through a fifth screw 19 and a sixth screw 23. Drive belts are arranged between the motor power output wheel and the second roller 18 and between the first roller 11 and the third roller 22. The two ends of the part to be processed, which are exposed out of the first roller 11, are respectively pressed on two v-shaped brackets on the first supporting block 25 through a transmission belt arranged between the third roller 22 and the first roller 11; the motor works, the output wheel drives the second roller 18, the screw rod 20 and the third roller 22 to rotate through the transmission belt, and the first roller 11 is driven to rotate through the transmission belt between the third roller 22 and the first roller 11, so that the part to be processed is driven to rotate on the two v-shaped brackets. The bracket 6 is fixedly arranged on the sliding block 5 through a second screw 7, and is provided with a mounting hole of a measuring rod 17; one end of the measuring rod 17 passes through the mounting hole of the bracket 6, and the end surface is used for propping up the end part of the non-processing end of the part to be processed; by adjusting the position of the support 6, the measuring rod 17 can be kept coaxial with the part to be machined. The present embodiment may employ micrometer measuring bars. The axial position of the measuring rod 17 is adjusted, the spherical center of the spherical surface to be processed of the part to be processed is adjusted to be positioned at the point O, and the end surface to be processed of the part to be processed is contacted with the excircle of the grinding wheel.
The embodiment utilizes the device to realize processing through the following processes:
step 1, sleeving a first roller 11 on a part to be processed, and positioning the first roller and the part to be processed from the radial direction through a third screw 12 or a positioning pin;
step 2, fixing the part assembled in the step 1 on a first supporting block 25, enabling two ends of the part to be processed exposed out of the first roller 11 to be respectively pressed on two v-shaped brackets on the first supporting block 25 through a transmission belt arranged between a third roller 22 and the first roller 11 in a driving mechanism, and enabling the part to be processed to rotate on the two v-shaped brackets under the driving of the first roller 11, and adjusting the first supporting block 25 to enable the radial position of the part to be processed to be coaxial with an O point;
step 3, adjusting the bracket 6 to enable the measuring rod 17 to be coaxial with the part to be processed;
step 4, adjusting the axial position of the measuring rod 17 to enable the end part of the measuring rod to be in contact with the end part of the non-processing end of the part to be processed;
step 5, fixing the device after adjustment on a machine tool, adjusting the axial position of a measuring rod 17 to enable the spherical center of a to-be-processed spherical surface of a part to be processed to be positioned at an O point, enabling the to-be-processed spherical surface to be in contact with the excircle of a grinding wheel, and enabling stress to be uniform;
step 6, starting a motor, wherein an output wheel of the motor drives the second roller 18, the small shaft 26 and the third roller 22 to rotate through a transmission belt, and then drives the first roller 11 to rotate through the transmission belt between the third roller 22 and the first roller 11, and the first roller 11 drives the part to be processed to rotate along the axial center line of the part to be processed;
and 7, pushing the handle 3 to drive the sliding block 5 to do circular reciprocating motion along the support plate 2, so as to drive the part to be processed to swing around the O point to realize grinding.

Claims (9)

1. A device for grinding of axle type part tip sphere, its characterized in that: comprises a base (1), a support plate (2), a sliding block (5), a first support block (25), a first roller (11), a bracket (6), a measuring rod (17) and a driving mechanism;
the support plate (2) is fixed on the upper surface of the base (1);
one end of the sliding block (5) is hinged on the base (1), the other end of the sliding block is matched with the support plate (2), and under the action of external force, the sliding block can take a hinging point as a circle center and be marked as an O point, and the sliding block can do circular reciprocating motion on the support plate (2) relative to the base (1);
the first support block (25) is fixed on the sliding block (5), and two v-shaped brackets are arranged on the first support block (25) and used for supporting the first roller (11) and the part to be processed;
the axial length of the first roller (11) is smaller than that of the part to be processed, and the first roller is sleeved on the part to be processed; the two ends of the part to be processed, which are exposed out of the first roller (11), are respectively pressed on the two v-shaped brackets on the first supporting block (25), and can rotate on the two v-shaped brackets under the drive of the first roller (11);
the bracket (6) is fixedly arranged on the sliding block (5), and the bracket (6) is provided with a mounting hole;
one end of the measuring rod (17) passes through the mounting hole on the bracket (6), and the end face is tightly propped against the end part of the non-processing end of the part to be processed;
the driving mechanism is fixed on the sliding block (5) and is used for driving the first roller (11) to rotate, so that the part to be processed is driven to rotate on the two v-shaped brackets on the first supporting block (25);
when the spherical surface to be processed of the part to be processed is processed, the radial position of the part to be processed is adjusted to be coaxial with the point O by adjusting the position of the first supporting block (25), the spherical center of the spherical surface to be processed of the part to be processed is adjusted to be positioned at the point O by adjusting the measuring rod (17), and the spherical surface to be processed is contacted with the excircle of the grinding wheel and is uniformly stressed; the driving mechanism drives the first roller (11) to rotate, the first roller (11) drives the part to be processed to rotate on the two v-shaped brackets on the first supporting block (25), and the sliding block (5) is rotated to enable the part to be processed to rotate and simultaneously make circumferential reciprocating swing by taking the O point as the circle center so as to realize grinding;
the driving mechanism comprises a motor and a driving assembly;
the driving assembly comprises a second supporting block (21), a screw (20), a second roller (18) and a third roller (22);
the second supporting block (21) is fixed on the sliding block (5), the screw rod (20) is positioned on the second supporting block (21), and the second roller (18) and the third roller (22) are respectively fixed on small shafts (26) at two ends of the screw rod (20);
a transmission belt is arranged between the output wheel of the motor and the second roller (18), and a transmission belt is arranged between the third roller (22) and the first roller (11); the two ends of the part to be processed, which are exposed out of the first roller (11), are respectively pressed on two v-shaped brackets on the first supporting block (25) through a transmission belt arranged between the third roller (22) and the first roller (11);
the motor works, the output wheel drives the second roller (18), the small shaft (26) and the third roller (22) to rotate through the transmission belt, and the first roller (11) is driven to rotate through the transmission belt between the third roller (22) and the first roller (11).
2. The device for grinding an end spherical surface of a shaft-like part according to claim 1, wherein: the support plate (2) is a circular arc-shaped guide plate, and the other end of the sliding block (5) is contacted with the support plate (2).
3. The device for grinding an end spherical surface of a shaft-like part according to claim 2, wherein: the central angle of the circular arc-shaped guide plate is 90 degrees.
4. A device for spherical grinding of shaft parts ends according to any one of claims 1-3, characterized in that: also comprises a handle (3);
one end of the sliding block (5) is hinged on the base (1) through a screw, and the other end of the sliding block (5) is fixed with the handle (3); the handle (3) is pushed to drive the sliding block (5) to do circular reciprocating motion on the support plate (2) relative to the base (1) by taking the screw as the circle center.
5. The device for grinding an end sphere of a shaft-like part according to claim 4, wherein: a gap is formed between the support plate (2) and the base (1); the size of the gap is L, wherein L is smaller than the thickness of the sliding block (5);
a guide block with the thickness smaller than L is arranged at the other end of the sliding block (5) and below the handle (3), and is inserted into a gap between the support plate (2) and the base (1); the lower surface of the handle (3) is contacted with the upper end surface of the support plate (2), the handle (3) is pushed, the guide block moves along the support plate (2), the sliding block (5) is driven to do circular reciprocating motion on the support plate (2) relative to the base (1) by taking the screw as the center of a circle.
6. The device for grinding an end sphere of a shaft-like part according to claim 5, wherein: the support plate (2) is fixed on the base (1) through a screw and a nut, and the gap between the support plate (2) and the base (1) is adjusted through adjusting the position of the nut on the screw.
7. The device for grinding an end spherical surface of a shaft-like part according to claim 1, wherein: the support plate (2) is a flat plate, a circular arc guide rail is arranged on the support plate, and the central angle of the circular arc guide rail is 90 degrees; the other end of the sliding block (5) is provided with a guide block matched with the circular arc-shaped guide rail, the guide block can slide along the guide rail under the action of external force, the sliding block (5) is driven to do circular reciprocating motion on the support plate (2) relative to the base (1) by taking the hinging point as the circle center.
8. A method for grinding the end sphere of a shaft part, which is realized based on the device of any one of claims 1-7 and comprises the following steps:
step 1, sleeving a first roller (11) on a part to be processed, and positioning the first roller and the part to be processed from the radial direction through a positioning pin;
step 2, fixing the assembly completed in the step 1 on a first supporting block (25), enabling two ends of a part to be processed to be exposed out of a first roller (11) to be respectively pressed on two v-shaped brackets on the first supporting block (25), adjusting the position of the first supporting block (25), enabling the radial position of the part to be processed to be coaxial with an O point, and enabling the part to be processed to be capable of rotating on the two v-shaped brackets under the driving of the first roller (11);
step 3, adjusting the bracket (6) to enable the measuring rod (17) to be coaxial with the part to be processed;
step 4, adjusting the axial position of the measuring rod (17) to enable the end part of the measuring rod (17) to be in contact with the end part of the non-processing end of the part to be processed;
step 5, fixing the device after adjustment on a machine tool, adjusting the axial position of a measuring rod (17) to enable the spherical center of a to-be-processed spherical surface of a part to be processed to be positioned at an O point, enabling the to-be-processed spherical surface to be in contact with the excircle of a grinding wheel, and enabling the stress to be uniform;
step 6, starting a motor, and driving a driving mechanism to drive a first roller (11) and a part to be processed to rotate;
and 7, pushing the sliding block (5) to enable the part to be processed to rotate and simultaneously make circumferential reciprocating swing by taking the O point as the circle center, so as to realize grinding.
9. The method for grinding the end spherical surface of the shaft part according to claim 8, wherein the method comprises the following steps: in the step 2, the part to be processed is exposed out of two ends of the first roller (11) and respectively pressed on two v-shaped brackets on the first supporting block (25) by a transmission belt arranged between the third roller (22) and the first roller (11) in the driving mechanism.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190723660A (en) * 1907-10-26 1908-09-17 Allen Ransome Improvements in Machines for Grinding the Rings of Ball Bearings.
CN102672575A (en) * 2011-12-16 2012-09-19 河南科技大学 Work-piece contouring device
CN102672576A (en) * 2011-12-16 2012-09-19 河南科技大学 Method for grinding spherical surface of workpiece
CN103128627A (en) * 2013-02-18 2013-06-05 洛阳轴研科技股份有限公司 Bulb grinding processing method and device of ball pin
CN112518496A (en) * 2020-03-09 2021-03-19 耿剑 Automobile ball cage surface polishing equipment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190723660A (en) * 1907-10-26 1908-09-17 Allen Ransome Improvements in Machines for Grinding the Rings of Ball Bearings.
CN102672575A (en) * 2011-12-16 2012-09-19 河南科技大学 Work-piece contouring device
CN102672576A (en) * 2011-12-16 2012-09-19 河南科技大学 Method for grinding spherical surface of workpiece
CN103128627A (en) * 2013-02-18 2013-06-05 洛阳轴研科技股份有限公司 Bulb grinding processing method and device of ball pin
CN112518496A (en) * 2020-03-09 2021-03-19 耿剑 Automobile ball cage surface polishing equipment

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