A surface grinding and polishing device for a hexahedral workpiece

Abstract

The present application relates to a kind of surface grinding and polishing equipment for hexahedral workpiece.It includes frame;Conveying track;Handling mechanism;Clamp;First polishing unit;Second polishing unit;Transfer mechanism;First steering mechanism;Second steering mechanism;Handling mechanism can drive the clamp to move up and down, clamp can drive lock body on conveying track to move back equidistantly step by step;The handling mechanism is provided with fixed stop time after each cycle is completed, in the stop time, the handling mechanism can transfer lock body on conveying track to first polishing unit or second polishing unit;After finishing polishing, handling mechanism can transfer workpiece back to the original position of conveying track or directly complete discharging.There is almost no unnecessary idle time in production process, and the overall production efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to a surface polishing equipment, in particular to a surface polishing equipment for hexahedral workpiece. BACKGROUND

[0002] There are many types of locks, and padlocks belong to one of the large categories. The padlock mainly includes: lock body, lock core and lock beam, wherein the lock body is generally made of metal. The main processing process of the lock body is: forming a hexahedral workpiece; polishing the surface of the workpiece; and performing drilling and cutting machining on the workpiece to form the lock body. The hexahedral workpiece includes four relatively small side surfaces and two large surfaces, any two adjacent side surfaces are perpendicular, and the two large surfaces can be a single large plane, an arc surface, or a plurality of small planes. The hexahedral workpiece is generally formed by casting or cutting, but the surface of the lock body after casting or cutting is rough, so it needs to be polished. The equipment for processing this type of lock body has low automation degree and low production efficiency. SUMMARY

[0003] The present application provides a surface polishing equipment for hexahedral workpiece; solves the problem of low automation degree and low production efficiency in the prior art.

[0004] The above technical problems of the present application are mainly solved by the following technical scheme: a surface polishing equipment for hexahedral workpiece, comprising a rack, characterized in that: further comprising:

[0005] A conveying track, the conveying track is linear and fixed relative to the front and back direction of the rack, and is used for carrying the workpiece;

[0006] A carrying mechanism, the carrying mechanism comprises: a first moving frame, the first moving frame can move back and forth along the distribution direction of the conveying track, and the moving distance is fixed each time; a second moving frame, the second moving frame moves synchronously with the first moving frame, and the second moving frame can move up and down relative to the first moving frame; the first moving frame and the second moving frame can be controlled to move by existing linear propulsion mechanisms, such as air cylinders, linear motors, gear and rack mechanisms, etc.;

[0007] A clamp, the clamp is located on the upper side of the conveying track, the number of clamps is several and they are distributed at equal intervals along the front and back direction of the rack, the interval between adjacent clamps is the same as the moving stroke of the first moving frame, and the carrying mechanism can drive all clamps to move synchronously; the clamp can only rely on the shape to form clamping and limiting with the workpiece, and does not necessarily have clamping action;

[0008] The first polishing unit comprises two oppositely distributed surface polishing machines, and can polish any two parallel sides of the workpiece;

[0009] The second polishing unit can polish the large surface of the workpiece;

[0010] The conveying track is connected with the first polishing unit through a transfer mechanism, and the conveying track is also connected with the second polishing unit through a transfer mechanism; the transfer mechanism can be a customized mechanical arm or a mechanical sliding table type transfer mode;

[0011] The first turning mechanism can perform vertical axial turning operation on the workpiece;

[0012] The second turning mechanism can perform horizontal axial turning operation on the workpiece;

[0013] The conveying mechanism can drive the clamp to move up and down and forward and backward, and the action mode of the clamp is sequentially downward clamping and fixing the workpiece, driving the workpiece to move backward, upward separating from the workpiece, and returning to the original position; the conveying mechanism circulates according to the above action mode, and the clamp can drive the workpiece on the conveying track to move backward step by step at equal intervals;

[0014] The first polishing unit is provided with two groups for polishing four planes of the workpiece, and is arranged forward and backward along the distribution direction of the conveying track; the first turning mechanism is located between the two first polishing units, and the first turning mechanism can reverse the workpiece after the previous polishing process, so that the remaining two planes to be polished are aligned and enter the next polishing process; the second polishing unit is also provided with two groups and is arranged forward and backward along the distribution direction of the conveying track; the second polishing unit is located at the rear side of the first polishing unit, and the second turning mechanism is located between the two second polishing units; the second polishing unit can only polish the upper side of the workpiece at a time, and the workpiece has two opposite surfaces that need to be polished, so that after the workpiece is polished once, the workpiece needs to be turned over by the second turning mechanism to complete the polishing of the other surface;

[0015] The conveying mechanism is provided with a fixed stop time after completing a cycle, and during the stop time, the conveying mechanism can transfer the workpiece on the conveying track to the first polishing unit or the second polishing unit; after polishing, the conveying mechanism can transfer the workpiece back to the original position of the conveying track or directly complete the discharging; when the conveying mechanism completes a cycle, the clamp is suspended above the workpiece to avoid collision with the clamp when other mechanisms convey or turn over the workpiece.

[0016] In summary, the present application connects each polishing process in series through the conveying mechanism, so that different workpieces on the conveying track experience polishing treatment at the same time in one action cycle of the conveying mechanism. The final result is that one workpiece completes all polishing processes every time the conveying mechanism performs one action cycle. The present application has high automation degree, and the production efficiency is determined by the polishing time of the single work station with the slowest polishing time, so there is almost no unnecessary idle time in the production process, and the overall production efficiency is high.

[0017] Further, a turning cylinder with a vertical turning shaft is arranged on the second moving frame between the two first polishing machine groups, the turning cylinder can drive a clamp to rotate 90° on the vertical shaft, and the turning cylinder and the corresponding clamp form the first turning mechanism. The turning cylinder can also be replaced by a motor.

[0018] Further, the second turning mechanism comprises: a rotating device, the output shaft of the rotating device is horizontal and perpendicular to the distribution direction of the conveying track, the output shaft of the rotating device rotates 180° at a time, and the rotating device can be a motor, a cylinder or other existing power mechanism with a rotating effect; a clamping assembly for clamping the workpiece, the clamping assembly is fixed to the output shaft of the rotating device, and the clamping assembly is preferably a finger cylinder; and a feeding assembly, the feeding assembly can drive the rotating device to move as a whole, so that the clamping assembly approaches or moves away from the workpiece on the conveying track. The feeding assembly can be a cylinder, a linear slide or other existing linear moving mechanism.

[0019] Further, the transfer mechanism comprises: a moving seat, which is capable of reciprocating in the horizontal direction and perpendicular to the conveying track direction; a supporting block, the upper surface of the supporting block coincides with the surface of the conveying track, and the supporting block is fixed on the moving seat; a clamping mechanism, which is fixed relative to the moving seat and can clamp the workpiece on the supporting block, and the clamping direction is parallel to the moving direction of the moving seat; and the clamping mechanism is preferably a finger cylinder, which is a mature existing device with compact overall structure.

[0020] A notch is arranged on the conveying track, so that the supporting block can move into the notch with the moving seat, and the clamp can move the workpiece onto the supporting block. The moving seat in the transfer mechanism can be a linear slide, which is easy to control and has high reliability. Compared with the conveying mode of the mechanical arm, the conveying of the workpiece is completed by the moving seat, the overall structure is simpler, the action is fewer, and the time consumption is reduced.

[0021] Further, the first polishing machine group further comprises two sets of positioning mechanisms, the positioning mechanisms comprise positioning blocks and top blocks, and the two sets of positioning mechanisms are located on the two sides of the moving path of the moving seat; the positioning blocks on the two sets of positioning mechanisms are distributed on the opposite sides of the moving path of the moving seat; and the top blocks can abut the workpiece on the passing supporting block to the positioning blocks.

[0022] When the transfer mechanism carries the workpiece to the first polishing machine, the clamping mechanism on the transfer mechanism is in a loosened state. When the workpiece moves to the positioning area of one of the positioning mechanisms, the transfer mechanism stops moving. The top block on the positioning mechanism pushes the workpiece against the positioning block, and then the clamping mechanism clamps the workpiece. The transfer mechanism continues to move to the processing area of one of the first polishing machines, completes polishing, reversely moves, carries the workpiece to the positioning area of another positioning mechanism, loosens the clamping mechanism, and then the positioning mechanism completes positioning of the workpiece. The transfer mechanism moves the workpiece to the processing area of another first polishing machine for polishing, and finally sends the workpiece back to the gap in the conveying track.

[0023] Further, the polishing surface of the first polishing machine is parallel to the moving path of the moving seat, and a linear movement mechanism is connected between the first polishing machine and the frame, and the movement direction of the linear movement mechanism is perpendicular to the moving path of the moving seat. The linear movement mechanism can drive the first polishing machine to translate, for controlling the feed amount of polishing.

[0024] Further, the second polishing machine set comprises a frame, the frame is in sliding fit with the frame, and the sliding direction is parallel to the distribution direction of the conveying track; a grinding wheel, the grinding wheel is in rotary connection with the frame, and the rolling shaft of the grinding wheel is parallel to the moving direction of the frame; a Z-axis movement mechanism, the moving direction of the Z-axis movement mechanism is vertical and below the grinding wheel, and the transfer mechanism connecting the conveying track and the second polishing machine set is fixed on the Z-axis movement mechanism. The Z-axis movement mechanism can drive the transfer mechanism and the workpiece thereon to approach or move away from the grinding wheel.

[0025] The Z-axis movement mechanism can move up and down, and the transfer mechanism can move horizontally, and the two can form a cross slide structure, which ensures that the walking path of the workpiece is consistent with the profile of the large surface of the workpiece during polishing of the workpiece, so that the second polishing machine set can be used for polishing the surfaces of workpieces of various shapes; the frame can drive the grinding wheel to move forward and backward, which is to keep the wear amount of each area as uniform as possible.

[0026] Further, a vibration disc is arranged on the frame, and the output end of the vibration disc is connected with the front end of the conveying track. The shape and size of the workpiece can be fed by the vibration disc.

[0027] Further, two pieces of clamping pieces are arranged on the clamp, and the clamping pieces are distributed in front of and behind each other, and the spacing between the clamping pieces is gradually increased from top to bottom. Such a structure allows a certain deviation, so that the clamp and the workpiece are more easily matched.

[0028] Therefore, the present application has the following characteristics compared with the prior art: 1. The present application connects each polishing process in series through the conveying mechanism. One workpiece completes all polishing processes for each action cycle of the conveying mechanism. The present application has high automation degree, and the production efficiency is determined by the polishing time of the single station with the slowest polishing time. Therefore, there is almost no unnecessary empty walking time in the production process, and the overall production efficiency is high; 2. The conveying mechanism of the present application has simple structure and less action, and the time consumption of each conveying is short, which is beneficial to improve the overall production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a top view of the present application; Figure 1

[0030] Figure 2 is an enlarged view of A part of figure 1; Figure 2 Figure 1 Figure 3 is a B-B sectional view of figure 1;

[0031] Figure 4 is a partial structure schematic view of the transfer mechanism of the present application; Figure 3 Figure 5 is a structure schematic view of the present application;

[0032] Figure 4 Figure 6 is a C part enlarged view of figure 5; Figure 1 Figure 7 is a side view of the present application.

[0033] Figure 5 DETAILED DESCRIPTION

[0034] The technical solutions of the present application are further specifically described below through examples and in combination with the drawings. Figure 6 Figure 5 In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] Example 1: see Figure 7 A surface polishing equipment for a hexahedral workpiece, the hexahedral workpiece including four relatively small area side surfaces and two arc surfaces, comprising a rack 100;

[0036]

[0037]

[0038] Figure 1 ​​​​​​​​​​

[0039] A conveying track 200 is linear and fixed relative to the front-rear direction of the frame, and used for carrying workpieces;

[0040] A carrying mechanism 300 includes a first moving frame 310 which is in sliding cooperation with the frame, the sliding direction being parallel to the distribution direction of the conveying track, and the moving distance being fixed each time, the frame being provided with a horizontally distributed rack 101, the first moving frame being provided with a first motor 311, the output end of the first motor being engaged with the rack; a second moving frame 320 which is in sliding cooperation with the first moving frame in an up-down manner, the first moving frame being provided with a first air cylinder 312 (see Figure 4 ) for controlling the movement of the second moving frame;

[0041] A clamp 330 is located on the upper side of the conveying track, the clamps being distributed at equal intervals along the front-rear direction of the frame (see Figure 7 ), the interval between adjacent clamps being the same as the moving stroke of the first moving frame, the clamps being fixed on the second moving frame;

[0042] A first polishing unit 400 includes two surface polishing machines 410 which are distributed in opposite directions, and the first polishing unit can perform surface polishing on any two parallel sides of the workpiece;

[0043] A second polishing unit 500 can perform arc surface polishing on the upper surface of the workpiece;

[0044] A transfer mechanism 600 is connected between the conveying track and the first polishing unit, and also connected between the conveying track and the second polishing unit;

[0045] A first turning mechanism 700 can perform vertical axial turning operation on the workpiece;

[0046] A second turning mechanism 800 can perform horizontal axial turning operation on the workpiece;

[0047] The carrying mechanism can drive the clamps to move up, down, forward and backward, and the action modes of the clamps are in turn downward clamping and fixing the workpiece, driving the workpiece to move backward, upward separating from the workpiece, and returning to the original position; the carrying mechanism is circulated according to the above action modes, and the clamps can drive the workpieces on the conveying track to move backward at equal intervals step by step;

[0048] The first polishing machine set is provided with two groups, which are used for polishing four planes of the workpiece and are arranged in front of and behind the distribution direction of the conveying track, the first turning mechanism is located between the two first polishing machine sets, the first turning mechanism can reverse the workpiece after the last polishing process, so that the remaining two planes to be polished are aligned and enter the next polishing process, the second polishing machine set is also provided with two groups and is arranged in front of and behind the distribution direction of the conveying track, the second polishing machine set is located at the rear side of the first polishing machine set, and the second turning mechanism is located between the two second polishing machine sets; the second polishing machine set can only polish the upper side of the workpiece at a time, and the workpiece has two opposite planes that need to be polished, so that the workpiece needs to pass through the turning process of the second turning mechanism after once arc surface polishing, so as to complete the polishing of the other plane.

[0049] The conveying mechanism is provided with a fixed stop time after completing a cycle, in the stop time, the conveying mechanism can transfer the workpiece on the conveying track to the first polishing machine set or the second polishing machine set; after polishing, the conveying mechanism can transfer the workpiece back to the original position of the conveying track or directly complete the discharging.

[0050] In summary, the polishing processes are connected by the conveying mechanism, so that different workpieces on the conveying track can simultaneously undergo polishing treatment in one action cycle of the conveying mechanism. Finally, one workpiece can complete all polishing processes in one action cycle of the conveying mechanism. The automation degree of the polishing device is high, and the production efficiency is determined by the polishing time of the single workpiece with the slowest polishing time, so that there is almost no unnecessary idle time in the production process, and the overall production efficiency is high.

[0051] See Figure 5 The second moving frame between the two first polishing machine sets is provided with a turning cylinder 321 with a vertical rotating shaft, the turning cylinder can drive a clamp to rotate 90 degrees in the vertical shaft direction, and the turning cylinder and the corresponding clamp form the first turning mechanism.

[0052] See Figure 6 The second turning mechanism comprises: a rotating device 810, the output shaft of the rotating device is horizontal and perpendicular to the distribution direction of the conveying track, the output shaft of the rotating device rotates 180 degrees each time, specifically, the rotating device is a turning cylinder; a clamping assembly 820 for clamping the workpiece, the clamping assembly is fixedly connected with the output shaft of the rotating device, specifically, the clamping assembly is a finger cylinder; and a feeding assembly 830, the feeding assembly can drive the whole rotating device to move, so that the clamping assembly approaches or moves away from the workpiece on the conveying track. Specifically, the feeding assembly is a sliding table controlled by a cylinder.

[0053] See Figure 1 , Figure 3 The transfer mechanism includes: a movable seat 610, which is capable of reciprocating in a horizontal direction and perpendicular to the conveying track direction; a support block 620, the upper surface of which coincides with the surface of the conveying track and is fixed on the movable seat; and a clamping mechanism 630, which is fixed relative to the movable seat and can clamp the workpiece located on the support block, and the clamping direction is parallel to the moving direction of the movable seat; specifically, the clamping mechanism is a finger cylinder and the movable seat is a linear motor.

[0054] See Figure 7 The conveying track has a notch 210, which allows the support block to move into the notch with the movable seat, and the clamp can move the workpiece onto the support block.

[0055] See Figure 1 , Figure 2 The first polishing unit also includes two sets of positioning mechanisms 420. Each positioning mechanism includes a positioning block 421 and a top block 422, which are located on opposite sides of the moving path of the moving seat. The positioning blocks on the two sets of positioning mechanisms are distributed on opposite sides of the moving path of the moving seat. The top block can abut the workpiece on the passing support block against the positioning block.

[0056] When the transfer mechanism carries the workpiece to the first polishing unit, the clamping mechanism on the transfer mechanism is in the loosened state. When the workpiece moves into the positioning area of ​​one of the positioning mechanisms, the transfer mechanism stops moving. The top block on the positioning mechanism will abut the workpiece against the positioning block, and then the clamping mechanism clamps the workpiece. The transfer mechanism continues to move to the processing area of ​​one of the first polishing machines. After polishing is completed, the transfer mechanism moves in the opposite direction, carrying the workpiece to the positioning area of ​​another positioning mechanism. Similarly, the clamping mechanism is first released, and then the positioning mechanism completes the positioning of the workpiece. The transfer mechanism moves the workpiece again to the processing area of ​​another first polishing machine for polishing, and finally sends the workpiece back to the notch on the conveyor track.

[0057] See Figure 1 The polishing surface of the first polishing machine is parallel to the moving path of the moving base. A linear moving mechanism 430 is connected between the first polishing machine and the frame. The moving direction of the linear moving mechanism is perpendicular to the moving path of the moving base. The linear moving mechanism can drive the first polishing machine to translate, thereby controlling the polishing feed rate.

[0058] See Figure 1 , Figure 4The second polishing unit comprises a frame 510 which is in sliding fit with the rack, the sliding direction is parallel to the distribution direction of the conveying track, and the movement is controlled by a screw rod mechanism; two grinding wheels 520 which are rotationally connected with the frame and are driven to rotate by a motor, the rolling shaft of the grinding wheel is parallel to the movement direction of the frame, and the two grinding wheels are divided into a rough polishing grinding wheel 521 and a fine polishing grinding wheel 522; a Z-axis movement mechanism 530, the movement direction of the Z-axis movement mechanism is a vertical direction and is located below the grinding wheel, a transfer mechanism for connecting the conveying track and the second polishing unit is fixed on the Z-axis movement mechanism, the Z-axis movement mechanism can drive the transfer mechanism and the workpiece thereon to approach or move away from the grinding wheel, and specifically, the Z-axis movement mechanism is a screw rod mechanism.

[0059] The transfer mechanism carries the workpiece to move to the second polishing unit, the Z-axis movement mechanism can lift the overall height of the transfer mechanism, so that the workpiece gradually approaches the grinding wheel; when the workpiece starts to contact the grinding wheel, the transfer mechanism continues to move, and the Z-axis movement mechanism moves up and down at the same time, so that the operation track of the workpiece is a circular arc, so that the workpiece can obtain an arc surface; the transfer mechanism drives the workpiece to pass through the rough polishing grinding wheel and the fine polishing grinding wheel in turn, and after two times of polishing, the workpiece is sent back to the conveying track; the frame can drive the grinding wheel to move forward and backward, so that the wear amount of each region is as uniform as possible.

[0060] See Figure 1 And Figure 5 The rack is provided with a vibrating disc 110, and the output end of the vibrating disc is connected with the front end of the conveying track; the rack is further provided with a feeding push block 120 controlled by a pneumatic cylinder, and the feeding push block can push the workpiece just entering the conveying track to the carrying starting point of the clamp; and the end of the conveying track is provided with an inclined discharging track 220. The shape and size of the workpiece can be fed by the vibrating disc.

[0061] See Figure 7 The clamp is provided with two clamping pieces 331 which are distributed in front of and behind each other, and the spacing between the clamping pieces is gradually increased from top to bottom. Such a structure allows a certain deviation, so that the clamp and the workpiece are more easily matched.

[0062] It will be apparent to those skilled in the art that the present application can be varied in a number of ways, and such variations are not to be regarded as a departure from the scope of the application. All such modifications to persons skilled in the art will be included within the scope of the present claims.

Claims

1. A surface polishing apparatus for a hexahedral workpiece, the hexahedral workpiece comprising four relatively small side surfaces and two large surfaces, characterized in that: Includes: racks; The conveyor track is straight and fixed in the front-to-back direction relative to the frame, and is used to carry the workpiece; The conveying mechanism includes: a first movable frame, which can reciprocate back and forth along the distribution direction of the conveying track, and the distance of each movement is fixed; and a second movable frame, which moves synchronously with the first movable frame, and can also reciprocate up and down relative to the first movable frame. The clamps are located on the upper side of the conveying track. There are several clamps, which are evenly distributed along the front and rear direction of the frame. The distance between adjacent clamps is the same as the travel distance of the first moving frame. The conveying mechanism can drive all clamps to move synchronously. The first polishing unit includes two surface polishing machines distributed opposite each other. The first polishing unit can perform planar polishing on any two parallel sides of the workpiece. The second polishing unit can polish the large surface of the workpiece; A transfer mechanism is provided, which connects the conveying track to the first polishing unit and the conveying track to the second polishing unit. The first steering mechanism can perform vertical axial steering operations on the workpiece; The second steering mechanism can perform horizontal axial steering operations on the workpiece; The conveying mechanism can drive the clamp to move up and down and back and forth. The clamp's operation mode is as follows: downward to clamp and fix the workpiece, drive the workpiece to move backward, upward to disengage from the workpiece, and forward to return to the original position. The conveying mechanism cycles according to the above operation mode, and the clamp can drive the workpiece on the conveying track to move backward equidistantly step by step. The first polishing unit is provided in two sets and is arranged back and forth along the distribution direction of the conveying track. The first steering mechanism is located between the two first polishing units. The second polishing unit is also provided in two sets and is arranged back and forth along the distribution direction of the conveying track. The second polishing unit is located behind the first polishing unit, and the second steering mechanism is located between the two second polishing units. The conveying mechanism has a fixed pause time after each cycle. During the pause time, the conveying mechanism can transfer the workpiece on the conveying track to the first polishing unit or the second polishing unit. After polishing, the conveying mechanism can transfer the workpiece back to its original position on the conveying track or directly unload it.

2. The surface grinding and polishing equipment for hexahedral workpieces according to claim 1, characterized in that: A steering cylinder with a vertically arranged rotating shaft is provided on the second moving frame between the two first polishing units. The steering cylinder can drive a clamp to rotate 90° in the vertical direction. The steering cylinder and the corresponding clamp form the first steering mechanism.

3. The surface grinding and polishing equipment for hexahedral workpieces according to claim 1 or 2, characterized in that: The second steering mechanism includes: a rotating device, the output shaft of which is horizontal and perpendicular to the distribution direction of the conveying track, and the output shaft of which rotates 180° each time; a clamping assembly for clamping the workpiece, the clamping assembly being fixedly connected to the output shaft of the rotating device; and a feeding assembly that can drive the rotating device to move as a whole, so that the clamping assembly moves closer to or away from the workpiece on the conveying track.

4. The surface grinding and polishing equipment for hexahedral workpieces according to claim 3, characterized in that: The clamping assembly is a finger cylinder.

5. The surface grinding and polishing equipment for hexahedral workpieces according to claim 3, characterized in that: The transfer mechanism includes: a movable seat, which is capable of reciprocating in a horizontal direction and perpendicular to the direction of the conveying track; a support block, the upper surface of which coincides with the surface of the conveying track and is fixed on the movable seat; and a clamping mechanism, which is fixed relative to the movable seat and can clamp the workpiece located on the support block, and the clamping direction is parallel to the moving direction of the movable seat. The conveyor track has a notch, which allows the support block to move into the notch with the movable seat, and the clamp can move the workpiece onto the support block.

6. The surface grinding and polishing equipment for hexahedral workpieces according to claim 5, characterized in that: The first polishing unit also includes two sets of positioning mechanisms, each including a positioning block and a top block, which are located on opposite sides of the moving path of the moving seat. The positioning blocks on the two sets of positioning mechanisms are distributed on opposite sides of the moving path of the moving seat. The top block can abut the workpiece on the passing support block against the positioning block.

7. The surface grinding and polishing equipment for hexahedral workpieces according to claim 6, characterized in that: The polishing surface of the first polishing machine is parallel to the moving path of the moving seat. A linear moving mechanism is connected between the first polishing machine and the frame. The moving direction of the linear moving mechanism is perpendicular to the moving path of the moving seat.

8. The surface grinding and polishing equipment for hexahedral workpieces according to claim 5, characterized in that: The second polishing unit includes: a frame, which is slidably fitted to the machine frame, with the sliding direction parallel to the distribution direction of the conveying track; a grinding wheel, which is rotatably connected to the frame, with the rolling axis of the grinding wheel parallel to the moving direction of the frame; and a Z-axis moving mechanism, which moves vertically and is located below the grinding wheel, used to connect the conveying track and the transfer mechanism of the second polishing unit. The Z-axis moving mechanism is fixed on the Z-axis moving mechanism, and can synchronously drive the transfer mechanism and the workpiece on it to move closer to or away from the grinding wheel.

9. The surface grinding and polishing equipment for hexahedral workpieces according to claim 5, characterized in that: The frame is equipped with a vibratory feeder, and the output end of the vibratory feeder is connected to the front end of the conveyor track.

10. The surface grinding and polishing equipment for hexahedral workpieces according to claim 1, characterized in that: The clamp is provided with two clamping plates that are spaced apart from each other, and the distance between the clamping plates gradually increases from top to bottom.

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