Test piece polishing device

Abstract

The invention discloses a test piece polishing device which is characterized in that a disc clamp module is located at the top of a polishing grinding disc module, the disc clamp module is overturned through an overturning mechanism, and the overturning mechanism and the disc clamp module are horizontally moved through a pushing mechanism; the turnover mechanism, the disc clamp module and the pushing mechanism form a whole and move up and down through the lifting module. The test pieces can be conveniently and rapidly clamped through overturning of the clamp, the multiple test pieces of different sizes can be polished at the same time through one-time clamping, and the polishing efficiency is greatly improved.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology, and in particular relates to a polishing device for a test piece. Background Art

[0002] Currently, most of the specimen polishing machines on the market are without fixtures, or with fixtures that are relatively traditional. Usually, the fixture needs to be removed from the grinding head when clamping the workpiece. There are two main ways of clamping with traditional fixtures: 1. Gluing the specimen to the fixture by gluing; 2. Digging holes corresponding to the specimen on disk parts and then fixing the workpiece with screws. When replacing a new workpiece for polishing, the workpiece and the original fixture cannot be clamped together due to size changes. In particular, workpieces with large size changes cannot be placed in the fixture at all and cannot be clamped. A new fixture must be made, which greatly affects the clamping efficiency of the specimen.

[0003] When polishing a test piece, the existing polishing machine needs to take out the fixture from the equipment to clamp the test piece. Not only is the number of test pieces polished at a time small and the size is single, but the clamping process is also time-consuming and labor-intensive. Summary of the invention

[0004] The purpose of the present invention is to design a polishing device for a test piece, which can utilize the flipping of a fixture to conveniently and quickly clamp the test piece, and can simultaneously polish multiple test pieces of different sizes in one clamping, thereby greatly improving the polishing efficiency.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows: A polishing device for a test piece, the device comprising: Disc fixture module, used to fix or clamp the test piece on the workstation; A flipping mechanism, used for flipping the disc fixture module; A pushing mechanism, used to realize horizontal movement of the movable disc fixture module and the flipping mechanism; A lifting module is used to realize the up and down movement of the disc fixture module; A polishing disc module is used to polish the test piece fixed by the disc fixture module; A control module, used to control the operation of the above modules and mechanisms; The disc clamp module is located on the top of the polishing disc module. The disc clamp module is flipped through a flipping mechanism. The flipping mechanism and the disc clamp module are horizontally moved through a pushing mechanism. The flipping mechanism, the disc clamp module and the pushing mechanism form a whole and are moved up and down through a lifting module.

[0006] Furthermore, the disc clamp module comprises a disc, in which a plurality of clamping modules are installed, each clamping module is composed of a clamping claw and a telescopic cylinder, and a water nozzle is installed between adjacent clamping modules.

[0007] Furthermore, the clamping module adopts a polygonal cylinder, the center of the polygonal cylinder has a main air path, and a corresponding number of air inlets are evenly extended along the main air path. Each air inlet is connected to a small cylinder, and the small cylinder drives the clamping claw.

[0008] Furthermore, a magnet and a pin are installed on the back of the clamp.

[0009] Furthermore, the flipping mechanism includes a supporting plane, on which a flipping cylinder is installed. The flipping cylinder is connected to a rack, and the gear drives the gear to rotate. The gear is installed on a rotating shaft, and the rotating shafts on both sides of the disc clamp module are located on bearing seats on both sides.

[0010] Furthermore, the pushing mechanism includes a pushing cylinder, which is located on a lifting base plate. The base plate is connected to the flip mechanism through a column. The pushing cylinder is connected to the flip mechanism through a connecting block, and a positioning block is installed on one side of the pushing cylinder.

[0011] Furthermore, the lifting module includes a base plate, support columns and guide shafts are installed at the four corners of the base plate, four linear bearings are installed at the four corners of the lifting base plate, and the lifting base plate moves up and down along the guide shafts through the linear bearings under the drive of the lifting mechanism.

[0012] Furthermore, the lifting mechanism includes a supporting vertical plate, a servo motor is installed under the supporting vertical plate, the servo motor is connected to the ball screw through a coupling, and the nut seat on the ball screw is installed on the lifting base plate.

[0013] Furthermore, the polishing disc module includes a polishing disc servo motor, which transmits torque to a transmission shaft through a toothed transmission belt. A grinding disc is connected to the top of the transmission shaft, and the polishing disc servo motor drives the grinding disc to rotate.

[0014] The following beneficial effects can be obtained through the above technical solution: The servo motor of the present invention is connected to the ball screw to accurately control the distance between the test piece and the grinding disc. The design of the flip fixture is used to facilitate the taking of the test piece, and the design is more humane. The fixture itself is designed with multiple workstations, and can adapt to the polishing of test pieces of different sizes in the same batch, thereby greatly improving the efficiency.

[0015] 1. Make full use of the grinding disc space and design a disc fixture to match the grinding disc. The disc fixture has eight clamping stations, which is suitable for clamping test pieces of different sizes. It can effectively solve the problem of small clamping quantity and single size of traditional fixtures.

[0016] 2. The designed pushing mechanism can push the disc fixture out of the equipment, which is convenient for manual operation.

[0017] 3. Equipped with a flipping mechanism, after the disc fixture is pushed out of the equipment, the fixture is flipped upward for easy clamping.

[0018] 4. Use the configuration of ball screw and guide shaft to let the fixture descend to the specified position above the grinding disc, which ensures both parallelism and stability during the descent process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an overall diagram of the polishing device.

[0020] Figure 2 This is a structural diagram of the polishing device.

[0021] Figure 3 This is the overall structure diagram of the disc fixture module.

[0022] Figure 4 This is a diagram of the internal structure of the cylinder.

[0023] Figure 5 This is a diagram of the gripper structure.

[0024] Figure 6 It is a schematic diagram of the working position of the gripper.

[0025] Figure 7 It is a schematic diagram of the flip mechanism.

[0026] Figure 8 It is a schematic diagram of the push mechanism.

[0027] Fig. 9 It is a schematic diagram of the lifting module.

[0028] Fig.10 It is the structural diagram of the lifting mechanism.

[0029] Fig.11 This is the structure diagram of the polishing module.

[0030] Fig.12 It is a cross-sectional view of the polishing mechanism.

[0031] Fig.13 It is a stereoscopic diagram of the pushing and flipping mechanism.

[0032] Fig.14 This is a schematic diagram of the clamp installation. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings: like Figure 1-12 As shown, a polishing device for a test piece, the device comprising: Disc fixture module 1, used for fixing or clamping the test piece on the workstation; Flipping mechanism 2, used for flipping the disc clamp module; The pushing mechanism 3 is used to realize the horizontal movement of the movable disc clamp module and the flipping mechanism; A lifting module 4 is used to realize the up and down movement of the disc clamp module; The polishing grinding disc module 5 is used to polish the test piece fixed by the disc fixture module; Control module 6, used to control the operation of the above modules and mechanisms; The disc clamp module is located on the top of the polishing disc module. The disc clamp module is flipped through a flipping mechanism. The flipping mechanism and the disc clamp module are horizontally moved through a pushing mechanism. The flipping mechanism, the disc clamp module and the pushing mechanism form a whole and are moved up and down through a lifting module.

[0034] The disc clamp module comprises a disc 11, in which a plurality of clamping modules are installed, each clamping module is composed of a clamping claw 12 and a telescopic cylinder 13, and two water spray heads 14 are installed on the disc clamp and distributed between the clamping modules.

[0035] The clamping module adopts a polygonal cylinder, the center of which is provided with a main air path 15 , along which air inlets 16 corresponding to the number of polygons are uniformly extended, each air inlet 16 is connected to a small air cylinder 17 , and the small air cylinder 17 drives the clamping jaws 12 .

[0036] A magnet 18 and a pin 19 are mounted on the back of the clamping jaw 12 .

[0037] The flipping mechanism 2 includes a supporting plane 21, on which a flipping cylinder 22 is installed. The flipping cylinder 22 is connected to a rack 23, and the gear 23 drives a gear 24 to rotate. The gear 24 is installed on a rotating shaft 25. The rotating shafts 25 on both sides of the disc clamp module are located on bearing seats 26 on both sides.

[0038] The pushing mechanism 3 includes a pushing cylinder 31 , which is located on a lifting base plate 32 . The base plate is connected to the flip mechanism via a column 33 . The pushing cylinder 31 is connected to the flip mechanism via a connecting block 34 . A positioning block 35 is installed on one side of the pushing cylinder 31 .

[0039] The lifting module 4 includes a base plate 42 , support columns 43 and guide shafts 44 are installed at the four corners of the base plate 42 , four linear bearings 41 are installed at the four corners of the lifting base plate 32 , and the lifting base plate 32 moves up and down along the guide shafts 44 through the linear bearings 41 under the drive of the lifting mechanism 45 .

[0040] The lifting mechanism 45 includes a supporting upright plate, a servo motor is installed below the supporting upright plate, the servo motor is connected to a ball screw through a coupling, and a nut seat on the ball screw is installed on the lifting base plate 32.

[0041] The polishing disc module 5 includes a polishing disc 51 , and a polishing disc servo motor 53 drives the disc to rotate.

[0042] The present invention provides a test piece polishing device, such as Figure 2 , including a disc clamp module 1, a turning mechanism 2, a pushing mechanism 3, a lifting module 4, a polishing disc module 5 and a control module 6. The working process is as follows: Figure 2 The position shown is the initial position. The lifting module 4 rises to the highest point. The pushing mechanism 3 pushes the disc clamp module 1 out of the equipment. The polishing surface of the disc clamp module 1 faces upward. At this time, the test piece is installed manually. After the installation is completed, the equipment door is closed, and the flipping mechanism 2 flips 180° so that the polishing surface of the disc clamp module 1 faces downward. The pushing mechanism sends the disc clamp module 1 to the top of the polishing grinding disc. Then the lifting module 4 drives the disc clamp module downward. The test piece contacts the grinding disc and starts to grind. At the same time, the grinding disc starts to rotate at a predetermined speed. After polishing is completed, the lifting module 4 starts to lift, and the test piece is separated from the grinding disc. When the lifting module 4 rises to the highest point, the pushing mechanism 3 pushes the disc clamp module 1 out and reaches the specified position. The flipping mechanism 2 flips the disc clamp module 1 from the bottom to the polishing surface facing up. Then the equipment door is opened, and the test piece is taken out to complete the polishing of the test piece.

[0043] Specifically, the disc clamp module 1 has eight clamping stations, and the clamping jaws are driven to open and close by pneumatic means to fix the test piece on the station, such as Figure 3 The clamping jaws 12 are arranged in a regular octagon on the disc 11. An octagonal cylinder is installed in the center of the disc. The cylinder extension rod drives the clamping jaws to move radially toward the disc. The other half of the clamping jaws is installed on the outer circumference of the disc workpiece. When the cylinder is extended and retracted, the clamping jaws move outward to clamp the test piece. The lower part of the clamping jaws is connected to a linear guide rail to ensure the parallelism of opening and closing. The internal structure of the octagonal cylinder is as follows: Figure 4 There is a main air path 15 in the center of the cylinder body, and eight small cylinders are arranged at 45 degrees along the circumference of the main air path. The air inlet 16 is connected to the cylinder body 13 of the small cylinder. The jaws have a variety of different sizes, which can be compatible with different sizes of test pieces for grinding at the same time, such as Figure 5 The thickness of the test piece to be polished is controlled by controlling the thickness of the stage. When the test piece is thicker, a thinner stage jaw is selected. When the test piece is thinner, a thicker stage jaw is selected. The compatible test piece thickness range is between 0.5mm-5mm. Figure 6 As shown in the figure, by selecting the matching clamps, the surfaces of the test pieces with different thicknesses are kept in the same plane. When the thickness of the test piece is less than 1mm, the pad bonding method is adopted to directly bond the very thin test piece to the pad, and the clamps clamp the pad, and the pad can be easily removed for bonding or debonding. Figure 5 A magnet 18 and a pin 19 are installed on the back of the clamp. The magnet is used for vertical adsorption, and the pin is used for positioning and fixing. Fig.14As shown, the magnet 18 is adsorbed on the magnetic block part in the station, and the pin 19 is inserted into the pin hole. The opening and closing stroke of the clamping jaws is 9.5mm~30.5mm, the maximum length and width of the clamped test piece is 40x30mm, and the length and width of the minimum test piece is 10x10mm. In summary, the dimensions of the clamped test piece are length: 10~40mm; width: 10~30mm; thickness: 0.5~5mm.

[0044] The fixture flipping mechanism is as follows Figure 7 and 13 , there are a flip cylinder 22, a gear 24, a rack 23, a bearing 26, a disk fixture module 1, a flip shaft 25, a positioning device, a linear guide rail, and a floating joint. First, the flip cylinder 22 drives the rack 23, and the rack 23 drives the gear 24 to rotate the flip shaft 25. Since the disk fixture module is rigidly connected to the flip shaft, the disk fixture module also flips with the flip shaft 25. The positioning device 27 is on one side of the rack and plays a positioning role for flipping, which can ensure that the parallelism of the disk fixture module meets the requirements after flipping. The linear guide rail is installed under the rack to ensure the parallelism of the rack when it moves. The floating joint is installed between the rack and the cylinder to compensate for the lack of precision caused by the installation of the cylinder. The positioning device 27 includes two adjustable positioning rings, a small linear bearing, a shaft (the shaft and the rack are rigidly connected), and a fixed sheet metal. The two positioning rings are respectively installed at both ends of the shaft. The shaft is also equipped with a small linear bearing. The small linear bearing is installed on the supporting plane 21 through the fixed sheet metal. The specific working principle is that when the telescopic rod of the cylinder 22 is extended to the limit position, the left positioning ring just contacts the small linear bearing to complete the positioning (such as Figure 7 Similarly, when the cylinder 22 reaches the minimum stroke, the right positioning ring contacts the small linear bearing to complete the positioning.

[0045] Figure 8 and 13 The push mechanism shown in the figure has a push cylinder 31, a positioning block 35, a lifting base plate 32, a linear guide rail, a connecting block 34, and a column 33; the push cylinder 31 is installed above the lifting base plate 32 and fixed by a sheet metal. A positioning block 35 is also installed on one side of the push cylinder 31. Under the limit of the positioning block 35, the push cylinder can run to a suitable position and stop. The flip mechanism is suspended by eight columns under the lifting base plate. The push cylinder is connected to the flip mechanism through the connecting block. The push cylinder 31 drives the flip mechanism to move left and right. The flip mechanism and the lifting base plate are connected by a linear guide rail to ensure flatness.

[0046] Fig. 9The lifting module shown in the figure includes a base plate 42, a support column 43, a lifting mechanism 45, a linear bearing 41, a guide shaft 44, and a lifting base plate 32. Four linear bearings are installed at the four corners of the lifting base plate, and the linear bearings are sleeved on four guide shafts, which are fixed to the base plate 1 through the support column. The lifting base plate is driven up and down by a lifting mechanism installed at its rear side. The specific lifting mechanism is as follows Fig.10 It is composed of a servo motor, a coupling, a ball screw 47, a nut seat 46, a support plate 48, etc. The nut seat 46 is installed on the point lifting bottom plate ( Fig. 9 )superior.

[0047] Polishing disc module Fig.11 As shown, it is composed of a grinding disc 51, a water guide groove 52, a servo motor 53, a synchronous belt 54, and a support column 55. The servo motor drives the transmission shaft below the grinding disc through the synchronous belt to drive the grinding disc to rotate. Fig.12 As shown, the grinding disc 51, the water guide groove 52, the bearing support, the thrust bearing 59, the synchronous wheel 54, the synchronous belt, the transmission shaft 58, the water guide hole 56, the support column 55, and the radial ball bearing 57 are sequentially arranged.

[0048] In the above specific implementation manner, the disc clamp module is designed to be compatible with the diverse sizes of test pieces, and the dimensions of the clamped test pieces are: length: 10-40mm; width: 10-30mm; thickness: 0.5-5mm.

[0049] When clamping the test piece, the disc clamp module can be pushed out of the device, and a flip mechanism is configured for the disc clamp module. When working, the clamp faces downward to the grinding disc, and when clamping, the clamp is flipped upward for easy clamping. The design of the pushing mechanism, flipping mechanism and magnet makes the clamping of the test piece more convenient, quick and humane. In this embodiment, automatic polishing of 8 pieces can be achieved by clamping at one time, which greatly improves the polishing efficiency. In practical applications, different numbers of clamps can be designed.

[0050] The above are all preferred embodiments of the present invention. For ordinary technicians in this technical field, without departing from the principle of the present invention, various equivalent modifications to the present invention belong to the protection scope of the claims attached to this application.

Claims

1. A polishing device for a test piece, characterized in that: The device comprises: Disc fixture module, used to fix or clamp the test piece on the workstation; A flipping mechanism, used for flipping the disc fixture module; A pushing mechanism, used to realize horizontal movement of the movable disc fixture module and the flipping mechanism; A lifting module is used to realize the up and down movement of the disc fixture module; A polishing disc module is used to polish the test piece fixed by the disc fixture module; A control module, used to control the operation of the above modules and mechanisms; The disc clamp module is located on the top of the polishing disc module. The disc clamp module is flipped through a flipping mechanism. The flipping mechanism and the disc clamp module are horizontally moved through a pushing mechanism. The flipping mechanism, the disc clamp module and the pushing mechanism form a whole and are moved up and down through a lifting module.

2. A test piece polishing device according to claim 1, characterized in that: The disc clamp module comprises a disc, in which a plurality of clamping modules are installed, each clamping module is composed of a clamping claw and a telescopic cylinder, and a water spray head is installed between adjacent clamping modules.

3. A test piece polishing device according to claim 2, characterized in that: The clamping module adopts a polygonal cylinder, the center of which is provided with a main air path, and air inlets corresponding to the number of polygons are uniformly extended along the main air path. Each air inlet is connected to a small air cylinder, and the small air cylinder drives the clamping claw.

4. A test piece polishing device according to claim 1, 2 or 3, characterized in that: A magnet and a pin are installed on the back of the clamping jaw.

5. The polishing device for a test piece according to claim 1, characterized in that: The flip mechanism comprises a supporting plane, on which a flip cylinder is installed, the flip cylinder is connected to a rack, the gear drives the gear to rotate, the gear is installed on a rotating shaft, and the rotating shafts on both sides of the disc clamp module are located on bearing seats on both sides.

6. A test piece polishing device according to claim 1, characterized in that: The pushing mechanism comprises a pushing cylinder, which is located on a lifting base plate, the base plate is connected to the flip mechanism through a column, the pushing cylinder is connected to the flip mechanism through a connecting block, and a positioning block is installed on one side of the pushing cylinder.

7. A test piece polishing device according to claim 1 or 6, characterized in that: The lifting module comprises a base plate, support columns and guide shafts are installed at the four corners of the base plate, four linear bearings are installed at the four corners of the lifting base plate, and the lifting base plate moves up and down along the guide shafts through the linear bearings under the drive of the lifting mechanism.

8. A test piece polishing device according to claim 7, characterized in that: The lifting mechanism comprises a supporting vertical plate, a servo motor is installed under the supporting vertical plate, the servo motor is connected to a ball screw through a coupling, and a nut seat on the ball screw is installed on the lifting bottom plate.

9. A test piece polishing device according to claim 1, characterized in that: The polishing disc module 5 includes a polishing disc servo motor, which transmits torque to a transmission shaft through a toothed transmission belt. A grinding disc is connected to the top of the transmission shaft, and the polishing disc servo motor drives the grinding disc to rotate.

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