CN116160330A - Cylindrical workpiece surface polishing machine - Google Patents

Abstract

The invention discloses a columnar workpiece surface grinding and polishing machine, comprising: a frame equipped with a control box, two grinding and polishing machines, workpiece fixtures, a reciprocating translation mechanism, and an automatic adjustment device; the two grinding and polishing machines pass through a After the first bearing seat is linked with the frame, it can realize active rotation on the table of the frame; the frame is also equipped with an automatic adjustment device for adjusting the distance between the grinding and polishing working surfaces of the two groups of grinding and polishing machines; the reciprocating translation mechanism It is fixedly connected with the frame, and is located between two grinding and polishing machines; the workpiece fixture is installed and fixed on the reciprocating translation mechanism; the present invention proposes a cylindrical workpiece surface grinding and polishing machine, and two sets of servos control the rotation of the workpiece and the two The distance between grinding and polishing machines is suitable for one machine with multiple functions, while ensuring the accuracy of the size and appearance of grinding and polishing, and it is convenient and simple to operate and change models.

Description

A cylindrical workpiece surface grinding and polishing machine

technical field

The invention relates to a cylindrical workpiece surface grinding and polishing machine, which belongs to the field of surface processing equipment.

Background technique

There are many columnar parts on the market, such as cylinder, cuboid, prism, elliptical column, etc. These workpieces must be ground or polished according to the application requirements. The sides of these columnar parts have a single plane and a single arc surface , or even flat and curved surfaces at the same time. Based on the above phenomenon, the current grinding and polishing machines on the market have great limitations. They can only grind and polish flat surfaces, or they can only grind and polish curved surfaces. , The current grinding and polishing machine cannot be used for multiple purposes, and it pales in comparison. As a result, manufacturers need to purchase different grinding and polishing machines for parts with different surfaces, which greatly increases the investment of manufacturers.

Contents of the invention

(1) Technical problems to be solved

In order to solve the above problems, the present invention proposes a cylindrical workpiece surface grinding and polishing machine.

(2) Technical solutions

A columnar workpiece surface grinding and polishing machine of the present invention comprises: a frame equipped with a control box, two grinding and polishing machines, workpiece fixtures, a reciprocating translation mechanism, and an automatic adjustment device; the two grinding and polishing machines pass through a first After a bearing seat is linked with the frame, it can rotate freely on the table of the frame; the frame is also equipped with an automatic adjustment device for adjusting the distance between the grinding and polishing working surfaces of the two sets of grinding and polishing machines; the reciprocating translation mechanism and The frame is fixedly connected and located between the two grinding and polishing machines; the workpiece fixture is installed and fixed on the reciprocating translation mechanism to carry the workpiece into and out of the grinding and polishing working faces of the two groups of grinding and polishing machines; the workpiece clamp is equipped with a The connecting bracket is correspondingly fixed on the reciprocating translation mechanism; the clamping assembly and the rotating assembly for clamping the workpiece are installed on the mounting connecting bracket; the rotating assembly is connected with the clamping assembly to drive the workpiece to rotate.

Further, the two groups of grinding and polishing machines have the same structure, all adopt abrasive belt grinding and polishing machines, and are installed in a mirror image distribution, including: a bottom plate, a motor, a driving rubber wheel, a driven wheel, and a tensioner; the bottom surface of the bottom plate is provided with The fixed shaft is extended, and the corresponding shaft is connected to the first bearing seat; the motor, the tensioner and the second bearing seat are installed on the bottom plate; the driven wheel is connected to the shaft on the tensioner; the shaft is connected to the second bearing seat There is a first rotating shaft; one end of the first rotating shaft is fixedly connected with a driving rubber wheel, and the other end is connected to the motor through a belt and a belt pulley to obtain kinetic energy; Abrasive belt for grinding and polishing.

Further, the first power source adopts a screw module driven by a servo motor, on which there are double sliders, which are respectively fixedly connected with a limit dial; The card slot at the position of the throwing machine corresponds to the carding of the second bearing seat machine.

Further, the first power source adopts a positive and negative screw module driven by a servo motor, and the module is provided with a positive and negative thread screw; Each rod nut is connected with a slider. When starting, the two sliders can move closer or apart synchronously; each of the two sliders is fixed with a limit dial; the limit dial is also provided with a useful The second bearing seat is correspondingly snapped into the slot that limits the position of the grinding and polishing machine.

Furthermore, a tension spring is also arranged in the grinding and polishing machine, and when working, the grinding and polishing machine always keeps in contact with the surface of the workpiece through the pulling force of the tension spring.

Further, the rotating assembly includes: a second power source, a third bearing seat, and a second rotating shaft; the second power source and the third bearing seat are fixedly installed on the installation connection bracket; the second power source is controlled by a servo Composed of a motor and a gearbox, the output end is equipped with a synchronous wheel; the inner shaft of the third bearing seat is connected with a second rotating shaft; the outer side of the second rotating shaft is equipped with a synchronous wheel and is output from the second power source through the synchronous belt. The synchronous wheel on the shaft forms a connection to obtain rotational power; the second rotating shaft is in the shape of a hollow tube as a whole, and the inner wall is provided with protruding splines.

Further, the clamping assembly includes: a top pressure cylinder, a connecting rod, a top pressure block, and a support block; the support block is installed on the installation connection bracket; the top pressure cylinder is fixedly connected to the installation connection bracket; the connection The side wall of the rod is provided with a spline groove, which rotates synchronously with the second rotating shaft after correspondingly engaging the protruding spline; one end of the connecting rod is connected with the push end of the top pressure cylinder, and the other end is connected and fixed with a top pressure block; The pressing block is located above the supporting block and fixes the workpiece together with the supporting block.

Further, a connecting shaft is provided at the bottom of the supporting block, and the connecting shaft and bearings are connected with the connecting bracket to form a movable shaft connection; the top pressing block is provided with a number of limit bosses for limiting the position of the workpiece.

Further, an automatic feeding mechanism is also installed on the frame; the automatic feeding mechanism includes: a feeding bin, a feeding cylinder, a U-shaped workpiece track, a guiding optical axis, and a loading block; the feeding bin , the feeding cylinder and the U-shaped workpiece track are fixedly connected with the frame; the guide optical axis is connected with the frame through a linear bearing; the loading block is fixedly connected with the guide optical axis and the pushing end of the feeding cylinder Finally, the reciprocating movement in the U-shaped workpiece track is realized; the loading block is provided with a loading trough, which is correspondingly located directly below the upper material bin under static conditions; the middle section of the U-shaped workpiece track is provided with a position avoidance slot Corresponding to accommodate the support block.

Further, the reciprocating translation mechanism adopts a screw module driven by a servo motor.

(3) Beneficial effects

The present invention has the following beneficial effects:

The invention proposes a cylindrical workpiece surface grinding and polishing machine. Two sets of servos respectively control the rotation of the workpiece and the distance between the two grinding and polishing machines. The workpiece can be rotated to any angle, or keep rotating during the grinding and polishing process. The distance between the machines can be adjusted to the required distance at any time, and the pressure is applied to the workpiece through the spring force, so that a soft linear connection is formed between the grinding and polishing machine and the workpiece, which can meet the grinding and polishing of workpieces on any side, while ensuring the grinding and polishing The accuracy of the size and appearance; the product change is convenient and simple, just replace the constant pressure block and support block in the fixture.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the present invention.

Figure 2 is a top view of the present invention.

Fig. 3 is a partial structural schematic diagram of the present invention.

FIG. 4 is a front view of FIG. 3 .

Fig. 5 is a schematic diagram of the overall structure of the grinding and polishing machine in the present invention.

Fig. 6 is a schematic structural view of the automatic adjustment device in the present invention.

Fig. 7 is a schematic structural view of the workpiece fixture in the present invention.

FIG. 8 is an enlarged view at A in FIG. 6 .

Fig. 9 is a schematic structural view of an automatic feeding mechanism in the present invention

Fig. 10 is a schematic diagram of the first state of the automatic feeding mechanism in the present invention.

Fig. 11 is a schematic diagram of the second state of the automatic feeding mechanism in the present invention.

Implementation

As shown in Figure 1-11, a cylindrical workpiece surface grinding and polishing machine includes: a frame 1 with a control box 11 installed, two grinding and polishing machines 2, a workpiece fixture 3, a reciprocating translation mechanism 4, and an automatic adjustment device 5; The two grinding and polishing machines 2 are respectively connected to the frame 1 through a first bearing seat 6 to realize active rotation on the table surface of the frame 1; the frame 1 is also equipped with two groups of grinding and polishing machines 2. An automatic adjustment device 5 for the distance between the grinding and polishing working surfaces; the reciprocating translation mechanism 4 is fixedly connected to the frame 1, and is located between two grinding and polishing machines 2; the reciprocating translation mechanism 4 is fixed with a workpiece fixture 3, To carry the workpiece 200 in and out of the grinding and polishing working surfaces of the two sets of grinding and polishing machines 2; the workpiece fixture 3 is provided with a mounting connection bracket 30 correspondingly fixed on the reciprocating translation mechanism 4; The clamping assembly 31 and the rotating assembly 32 of the workpiece 200; the rotating assembly 32 is connected with the clamping assembly 31 to drive the workpiece 200 to rotate.

Referring to Fig. 4, the two groups of grinding and polishing machines 2 have the same structure, all adopt abrasive belt grinding and polishing machines, and are installed in a mirror image distribution, including: base plate 21, motor 22, driving rubber wheel 23, driven wheel 24, tensioner 25 The bottom surface of the base plate 21 is provided with an extended fixed shaft 20, which is connected to the first bearing seat 6 correspondingly; a motor 22, a tensioner 25 and a second bearing seat 26 are installed on the base plate 21; A driven wheel 24 is connected to the shaft; a first rotating shaft 27 is connected to the shaft on the second bearing seat 26; one end of the first rotating shaft 27 is fixedly connected to a driving rubber wheel 23, and the other end is formed by a belt and a pulley and a motor 22 connected to obtain kinetic energy; the outer circular surfaces of the driving rubber wheel 23 and the driven wheel 24 are correspondingly fitted with abrasive belts 28 for grinding and polishing.

Referring to FIG. 5 , the automatic adjustment device 5 includes: a first power source 51 and two limit dials 52; the first power source 51 is correspondingly installed on the frame 1; the two limit dials 52 It is installed on the first power source 51 , and each limit shift plate 52 is respectively supported against one grinding and polishing machine 2 .

Preferably, the first power source 51 adopts a screw module driven by a servo motor, on which there are double sliders, which are respectively fixedly connected with a limit dial 52; The slot 521 defining the position of the grinding and polishing machine 2 is correspondingly engaged with the second bearing seat 26 .

With reference to Fig. 1, 3, in described grinding and polishing machine 2, also be provided with extension spring 7, during work, described grinding and polishing machine 2 is kept in contact with the surface of workpiece 200 by the pulling force of extension spring 7; The throwing machines 7 can be connected to each other by a group of extension springs 7 , or can be respectively connected to the frame 1 by a group of extension springs 7 .

6 and 7, the rotating assembly 32 includes: a second power source 321, a third bearing seat 322, and a second rotating shaft 323; the second power source 321 and the third bearing seat 322 are fixedly installed on the installation connection bracket 30 Above; the second power source 321 is composed of a servo motor and a gearbox, and a synchronous wheel is installed at its output end; the inner shaft of the third bearing seat 322 is connected with a second rotating shaft 323; the outer side of the second rotating shaft 323 is installed There is a synchronous wheel and is connected with the synchronous wheel on the output shaft of the second power source 321 through the synchronous belt to obtain rotational power; the second rotating shaft 323 is in the shape of a hollow tube as a whole, and the inner wall is provided with a raised spline 3231 .

Preferably, the clamping assembly 31 includes: a top pressure cylinder 311, a connecting rod 312, a top pressure block 313, and a support block 314; the support block 314 is installed on the installation connection bracket 30; The connecting bracket 30 is fixedly connected; the side wall of the connecting rod 312 is provided with a spline groove 3121, and after correspondingly engaging the protruding spline 3231, it rotates synchronously with the second rotating shaft 323; One end is connected, and the other end is connected and fixed with a top pressing block 313 ;

Preferably, the bottom of the support block 314 is provided with a connecting shaft 315, and the connecting shaft 315 and the bearing form a movable shaft connection with the installation connection bracket 30; Tightening surface; the top pressure block 313 is provided with a number of limit bosses 3131 for limiting the position of the workpiece 200, so as to further ensure the clamping strength for the workpiece 200 with holes on part of the clamping surface; the top pressure The bottom surface of the block 313 is in contact with and does not exceed the upper clamping surface of the workpiece 200 .

Referring to Figures 9-11, an automatic feeding mechanism 8 is installed on the frame 1; , loading block 84; described feeding bin 9, feeding cylinder 81 and U-shaped workpiece rail 82 are all fixedly connected with frame 1; described guiding optical axis 83 is connected with frame 1 by linear bearing; After the material block 84 is fixedly connected with the guide optical axis 83 and the push end of the feed cylinder 81 at the same time, it realizes reciprocating movement in the U-shaped workpiece track 82; It is located directly below the upper material bin 9; the middle section of the U-shaped workpiece track 82 is provided with an avoidance slot 821, correspondingly accommodating the support block 314.

Referring to FIG. 2 , the reciprocating translation mechanism 4 adopts a screw module driven by a servo motor.

Combined with Figure 1-11, the first power source 51 based on the automatic adjustment device 5 uses a servo motor to drive the screw module. When the threaded screw is reversed, the two sliders are respectively on the positive and negative two parts of the screw, and the two limit dials 52 drive the two grinding and polishing machines 2 to approach or leave the surface of the workpiece 200 synchronously. In this state, the main It is to complete a grinding and polishing of the surface of the workpiece 200; 2. When the screw rod provided in the first power source 51 is a one-way threaded screw rod, the two limit dials 52 drive the two grinding and polishing machines 2 to move in the same direction, That is, one grinding and polishing machine 2 has a workpiece of 200, and the other grinding and polishing machine 2 does not touch the workpiece 200. When the abrasive belts 28 meshes of the two grinding and polishing machines 2 are inconsistent, the surface of the workpiece can be polished twice to different degrees. , that is, one grinding and polishing machine 2 completes rough polishing, and the other grinding and polishing machine 2 completes fine polishing.

When the first power source 51 adopts positive and negative threaded screw rods, the limit dial 52 moves closer to or leaves the workpiece synchronously. The working process and principle of the present invention are as follows:

Under normal conditions, the support block 314 is located in the avoidance slot 821. Before starting the grinding and polishing, the distance between the two grinding and polishing machines 2 is adjusted through the automatic adjustment device 5. When the loading block 84 sends the workpiece 200 to the support block 314 When going up, the clamping assembly 31 clamps the workpiece 200, and then the reciprocating translation mechanism 4 drives the clamping assembly 31 to move out of the avoidance slot 821, and then leans against the grinding and polishing machine 2 for grinding and polishing. After the grinding and polishing is completed, the workpiece 200 will be re-ground Send it to the avoidance slot 821, and when loading next time, the front end of the loading block 84 will push the last workpiece 200 that has been ground and polished out of the support block 314. There are two types of grinding and polishing processes: 1. When the side of the workpiece 200 has multiple planes, the rotating assembly 32 drives the workpiece 200 to rotate once, and the reciprocating translation mechanism 4 drives the workpiece 200 to enter between the two grinding and polishing machines 2, passing through the active rubber wheel 23 at the same time, the active rubber wheel 23 will be pushed outward to rotate, and under the tension of the extension spring 7, the active rubber wheel 23 will always be in contact with the surface of the workpiece 200 to realize polishing, that is, the grinding and polishing of two opposite surfaces can be completed at one time The workpiece 200 is moved out of the two grinding and polishing machines 2, the rotating assembly 32 drives the workpiece 200 to rotate again, and the reciprocating translation mechanism 4 drives the workpiece 200 to enter between the two grinding and polishing machines 2 again, so that the grinding and polishing of the second group of opposite surfaces can be completed. The grinding and polishing of all the planes can be completed sequentially; 2. When the side of the workpiece 200 is arc-shaped, the reciprocating translation mechanism 4 carries the workpiece 200 on the workpiece holder 3 back and forth between the two grinding and polishing machines 2, and rotates The component 32 keeps rotating at all times, and at the same time, the automatic adjustment device 5 automatically adjusts the distance between the two grinding and polishing machines 2 according to the requirements of the workpiece 200 during grinding and polishing rotation, thereby completing the grinding and polishing.

When the first power source 51 adopts a unidirectional threaded screw, the two limit dials 52 move the grinding and polishing machine 2 in the same direction. At this time, at the same time, only one grinding and polishing machine 2 grinds and polishes the workpiece 200. Process and principle when the present invention works:.

The entire loading and unloading and grinding and polishing principle is consistent with the above-mentioned principle, and the workpiece 200 and the abrasive belt 28 are profiling, so as to return to the avoidance slot 821 after grinding and polishing, and then perform blanking and re-loading; the difference from the above is that The grinding and polishing process, in this state, is aimed at the workpiece 200 that needs to be more detailed on the surface; first, two grinding and polishing machines 2 are equipped with abrasive belts 28 of two different meshes, coarse and fine, respectively, and one grinding and polishing machine 2 uses For rough grinding, another grinding and polishing machine 2 is used for fine grinding. The polishing machine 2 completes the coarse grinding, and then the first power source 51 drives the grinding and polishing machine 2 as fine grinding to grind and polish each side plane of the workpiece 200 in turn; The piece 200 rotates all the time under the drive of the rotating assembly 3, and the first power source 51 drives and constantly adjusts the grinding and polishing machine 2 as the rough grinding, so as to ensure that the active rubber wheel 23 is always in contact with the surface of the workpiece 200 to complete the rough grinding, and then the second A power source 51 drives and constantly adjusts the grinding and polishing machine 2 as fine grinding to complete the fine grinding.

The invention proposes a cylindrical workpiece surface grinding and polishing machine. Two sets of servos respectively control the rotation of the workpiece and the distance between the two grinding and polishing machines. The workpiece can be rotated to any angle, or keep rotating during the grinding and polishing process. The distance between the machines can be adjusted to the required distance at any time, and the pressure is applied to the workpiece through the spring force, so that a soft linear connection is formed between the grinding and polishing machine and the workpiece, which can meet the grinding and polishing of workpieces on any side, while ensuring the grinding and polishing The accuracy of the size and appearance; the product change is convenient and simple, just replace the constant pressure block and support block in the fixture.

It should be understood that the exemplary embodiments described herein are illustrative and not restrictive; while embodiments of the invention have been described in conjunction with the accompanying drawings, those of ordinary skill in the art will appreciate that, without departing from what is described in the appended claims Various changes in form and details may be made without departing from the spirit and scope of the present invention.

Claims (10)

1. A cylindrical workpiece surface grinding and polishing machine, comprising: a frame (1) provided with a control box (11), two polishing and grinding machines (2), a workpiece clamp (3), a reciprocating translation mechanism (4) and an automatic adjusting device (5); the method is characterized in that: the two polishing and grinding machines (2) are respectively connected with the frame (1) through a first bearing seat (6) to realize movable rotation on the table top of the frame (1); the frame (1) is also provided with an automatic adjusting device (5) for adjusting the distance between the grinding and polishing working surfaces of the two groups of grinding and polishing machines (2); the reciprocating translation mechanism (4) is fixedly connected with the frame (1) and is positioned between the two polishing and grinding machines (2); a workpiece clamp (3) is fixedly arranged on the reciprocating translation mechanism (4) so as to carry a workpiece (200) into and out of the grinding and polishing working surfaces of the two groups of grinding and polishing machines (2); the workpiece clamp (3) is provided with a mounting connecting bracket (30) which is correspondingly fixed on the reciprocating translation mechanism (4); the mounting connection bracket (30) is provided with a clamping component (31) and a rotating component (32) for clamping the workpiece (200); the rotating assembly (32) is connected with the clamping assembly (31) to drive the workpiece (200) to rotate.

2. The cylindrical workpiece surface grinding and polishing machine according to claim 1, wherein: the two groups of polishing machines (2) have the same structure, adopt abrasive belt polishing machines and are in mirror image installation distribution, and comprise: a bottom plate (21), a motor (22), a driving rubber wheel (23), a driven wheel (24) and a tensioner (25); an extension fixed shaft (20) is arranged on the bottom surface of the bottom plate (21), and is correspondingly connected with a first bearing seat (6) in a shaft way; the bottom plate (21) is provided with a motor (22), a tensioner (25) and a second bearing seat (26); the tensioner (25) is connected with a driven wheel (24) in a shaft way; a first rotating shaft (27) is connected to the second bearing (26) in a shaft way; one end of the first rotating shaft (27) is fixedly connected and fixed with a driving rubber wheel (23), and the other end of the first rotating shaft is connected with the motor (22) through a belt and a belt pulley to obtain kinetic energy; abrasive belts (28) for grinding and polishing are sleeved on the outer surfaces of the driving rubber wheel (23) and the driven wheel (24).

3. The cylindrical workpiece surface grinding and polishing machine according to claim 1, wherein: the automatic adjustment device (5) comprises: the first power source (51) and two limiting poking plates (52); the first power source (51) is correspondingly arranged on the frame (1); the two limiting shifting plates (52) are arranged on the first power source (51), and each limiting shifting plate (52) correspondingly abuts against one polishing machine (2) respectively.

4. A cylindrical workpiece surface grinding and polishing machine as defined in claim 3, wherein: the first power source (51) adopts a screw rod module driven by a servo motor, and is provided with double sliding blocks which are fixedly connected with a limiting shifting plate (52) respectively; the limiting shifting plate (52) is provided with a clamping groove (521) for limiting the position of the polishing machine (2), and is correspondingly clamped with the second bearing seat (26).

5. The cylindrical workpiece surface grinding and polishing machine according to claim 1, wherein: the polishing machine (2) is internally provided with a tension spring (7), and when in operation, the polishing machine (2) always keeps contact with the surface of the workpiece (200) through the tension of the tension spring (7).

6. The cylindrical workpiece surface grinding and polishing machine according to claim 1, wherein: the rotating assembly (32) includes: a second power source (321), a third bearing seat (322) and a second rotating shaft (323); the second power source (321) and the third bearing seat (322) are fixedly arranged on the mounting connection bracket (30); the second power source (321) consists of a servo motor and a gearbox, and the output end of the second power source is provided with a synchronous wheel; a second rotating shaft (323) is axially connected to the third bearing seat (322); the outer side of the second rotating shaft (323) is provided with a synchronous wheel, and the synchronous wheel is connected with a synchronous wheel on an output shaft of the second power source (321) through the synchronous belt to obtain rotating power; the second rotating shaft (323) is integrally hollow and tubular, and the inner wall of the second rotating shaft is provided with a convex spline (3231).

7. The cylindrical workpiece surface grinding and polishing machine according to claim 1, wherein: the clamping assembly (31) comprises: a jacking cylinder (311), a connecting rod (312), a jacking block (313) and a supporting block (314); the supporting block (314) is arranged on the mounting connecting bracket (30), and the surface of the supporting block is attached to the compression surface of the workpiece (200); the jacking cylinder (311) is fixedly connected with the mounting connecting bracket (30); spline grooves (3121) are formed in the side wall of the connecting rod (312), and the connecting rod is correspondingly meshed with the raised spline (3231) and then synchronously rotates along with the second rotating shaft (323); one end of the connecting rod (312) is connected with the pushing end of the pushing cylinder (311), and the other end of the connecting rod is fixedly connected with a pushing block (313); the pressing block (313) is positioned above the supporting block (314), the bottom surface of the pressing block is attached to the pressing surface of the workpiece (200), and the pressing block and the supporting block (314) are used for fixing the workpiece (200).

8. The cylindrical workpiece surface grinding and polishing machine as set forth in claim 7, wherein: a connecting shaft (315) is arranged at the bottom of the supporting block (314), and the connecting shaft (315) and the bearing form movable shaft connection with the mounting connecting bracket (30); the pressing block (313) is provided with a plurality of limiting bosses (3131) for limiting the position of the workpiece (200).

9. The cylindrical workpiece surface grinding and polishing machine according to claim 1, wherein: an automatic feeding mechanism (8) is also arranged on the frame (1); the automatic feeding mechanism (8) comprises: the feeding device comprises a feeding bin (9), a feeding cylinder (81), a U-shaped workpiece track (82), a guiding optical axis (83) and a loading block (84); the feeding bin (9), the feeding cylinder (81) and the U-shaped workpiece track (82) are fixedly connected with the frame (1); the guide optical axis (83) is movably connected with the frame (1) through a linear bearing; the material loading block (84) is fixedly connected with the guide optical axis (83) and the pushing end of the feeding cylinder (81) at the same time, and then can reciprocate in the U-shaped workpiece track (82); a loading groove (841) is formed in the loading block (84), and the loading groove is correspondingly positioned under the upper bin (9) in a static state; the middle section of the U-shaped workpiece track (82) is provided with a clearance notch (821) corresponding to the accommodating support block (314).

10. The cylindrical workpiece surface grinding and polishing machine according to claim 1, wherein: the reciprocating translation mechanism (4) adopts a screw rod module driven by a servo motor.

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