A polishing device for a test piece

Abstract

The application discloses a polishing device for test pieces, wherein a disc clamp module is located on the top of a polishing grinding disc module, the disc clamp module is turned over through a turnover mechanism, the turnover 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 an entirety and are moved up and down through a lifting module; the turnover of the clamp can be utilized to conveniently and quickly clamp the test pieces, and the clamping of the test pieces of different sizes is realized at one time, so that the polishing efficiency is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of mechanical technology, specifically relating to a polishing device for test pieces. Background Technology

[0002] Most test piece polishing machines on the market are either without clamps or have clamps, but the clamps are quite traditional. Usually, when clamping a workpiece, the clamp needs to be removed from the grinding head. There are two main ways to clamp the test piece: 1. Adhere the test piece to the clamp using adhesive; 2. Cut holes corresponding to the test piece in a disc-like part and then fix the workpiece with screws. When polishing a new workpiece, due to the change in size, the workpiece cannot be clamped tightly with the original clamp. Especially for workpieces with large size changes, they cannot be placed in the clamp at all and cannot be clamped. The clamp must be remade, which greatly affects the clamping efficiency of the test piece.

[0003] Existing polishing machines require removing the fixture from the equipment to clamp the test pieces during polishing. This not only results in a small number of test pieces being polished at a time and in uniform size, but also makes the clamping process time-consuming and labor-intensive. Summary of the Invention

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

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A polishing apparatus for test pieces, the apparatus comprising: The disc clamp module is used to fix or clamp the test piece at the workstation; A flipping mechanism is used to flip the disc clamp module; The pushing mechanism is used to enable the horizontal movement of the moving disc clamp module and the flipping mechanism; The lifting module is used to move the disc clamp module up and down. The polishing disc module is used to polish the test pieces fixed by the disc clamp module; The control module is used to control the operation of the above modules and mechanisms; The disc clamp module is located on top of the polishing disc module. The disc clamp module is flipped by a flipping mechanism. The flipping mechanism and the disc clamp module are moved horizontally by a pushing mechanism. The flipping mechanism, the disc clamp module and the pushing mechanism form a whole and are moved up and down by a lifting module.

[0006] Furthermore, the disc clamp module includes a disc, and several clamping modules are installed inside the disc. Each clamping module consists of a gripper and a telescopic cylinder, and water nozzles are installed between adjacent clamping modules.

[0007] Furthermore, the clamping module uses a polygonal cylinder. The center of the polygonal cylinder has a main air passage, and a number of air inlets corresponding to the polygonal shape extend evenly along the main air passage. Each air inlet is connected to a small cylinder, which drives the gripper.

[0008] Furthermore, magnets and pins are mounted on the back of the gripper.

[0009] Furthermore, the flipping mechanism includes a support 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 sit on bearing seats on both sides.

[0010] Furthermore, the pushing mechanism includes a pushing cylinder, which sits on a lifting base plate. The base plate is connected to a tilting mechanism via a column. The pushing cylinder is connected to the tilting mechanism via a connecting block. A positioning block is installed on one side of the pushing cylinder.

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

[0012] Furthermore, the lifting mechanism includes a support plate, a servo motor is installed below the support plate, the servo motor is connected to a ball screw via 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 the drive shaft via a toothed transmission belt. The polishing disc is connected above the drive shaft, and the polishing disc servo motor drives the polishing disc to rotate.

[0014] The above technical solution can achieve the following beneficial effects: This invention uses a servo motor linked to a ball screw to precisely control the distance between the test piece and the grinding disc. The design of the flip-over fixture facilitates the handling of the test piece, making the design more user-friendly. The fixture itself is designed with multiple stations and can accommodate test pieces of different sizes to be polished in the same batch, greatly improving 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 to accommodate test pieces of different sizes, which can effectively solve the problem of traditional fixtures having a small number of clamping pieces and a single size.

[0016] 2. The design of the pushing mechanism can push the disc clamp out of the equipment, making it convenient for manual operation.

[0017] 3. Configure a flipping mechanism so that after the disc clamp is pushed out of the equipment, the clamp flips upward for easy clamping.

[0018] 4. The use of a ball screw and guide shaft configuration allows the fixture to descend to a designated position above the grinding disc, ensuring both parallelism and stability during the descent process. Attached Figure Description

[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 an overall structural diagram of the disc clamp module.

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

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

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

[0025] Figure 7 This is a schematic diagram of the flipping mechanism.

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

[0027] Figure 9 This is a schematic diagram of the lifting module.

[0028] Figure 10 This is a structural diagram of the lifting mechanism.

[0029] Figure 11 This is a structural diagram of the polishing module.

[0030] Figure 12 This is a cross-sectional view of the polishing mechanism.

[0031] Figure 13 It is a 3D diagram of the pushing and flipping mechanism.

[0032] Figure 14 This is a diagram showing the installation of the grippers. Detailed Implementation

[0033] The invention will be further described below with reference to the accompanying drawings: like Figure 1-12 As shown, a polishing apparatus for a test piece includes: The disc clamp module 1 is used to fix or clamp the test piece at the workstation; The flipping mechanism 2 is used to flip the disc clamp module; Pushing mechanism 3 is used to realize the horizontal movement of the moving disc clamp module and the flipping mechanism; Lifting module 4 is used to realize the up and down movement of the disc clamp module; Polishing disc module 5 is used to polish the test piece fixed by the disc clamp module; Control module 6 is used to control the operation of the above modules and mechanisms; The disc clamp module is located on top of the polishing disc module. The disc clamp module is flipped by a flipping mechanism. The flipping mechanism and the disc clamp module are moved horizontally by a pushing mechanism. The flipping mechanism, the disc clamp module and the pushing mechanism form a whole and are moved up and down by a lifting module.

[0034] The disc clamp module includes a disc 11, and several clamping modules are installed inside the disc. Each clamping module consists of a gripper 12 and a telescopic cylinder 13. Two water nozzles 14 are installed on the disc clamp and distributed between the clamping modules.

[0035] The clamping module uses a polygonal cylinder. The center of the polygonal cylinder has a main air passage 15, and a number of air inlets 16 of the corresponding polygonal number extend evenly along the main air passage. Each air inlet 16 is connected to a small cylinder 17, and the small cylinder 17 drives the gripper 12.

[0036] The back of the gripper 12 is fitted with a magnet 18 and a pin 19.

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

[0038] The pushing mechanism 3 includes a pushing cylinder 31, which sits on a lifting base plate 32. The base plate is connected to a flipping mechanism via a column 33. The pushing cylinder 31 is connected to the flipping 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, with support columns 43 and guide shafts 44 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. The lifting base plate 32 moves up and down along the guide shafts 44 via the linear bearings 41 under the drive of the lifting mechanism 45.

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

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

[0042] The present invention provides a polishing apparatus for test pieces, such as... Figure 2 It includes a disc clamp module 1, a flipping 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 its highest point, and the pushing mechanism 3 pushes the disc clamp module 1 outside the equipment with its polished surface facing upwards. At this point, the test piece is installed manually. After installation, the equipment door is closed, and the flipping mechanism 2 rotates 180° so that the polished surface of the disc clamp module 1 faces downwards. The pushing mechanism then sends the disc clamp module 1 directly above the polishing disc. Subsequently, the lifting module 4 drives the disc clamp module downwards, and the test piece contacts the polishing disc to begin polishing. At the same time, the polishing disc begins to rotate at a predetermined speed. After polishing is complete, the lifting module 4 begins to rise, and the test piece detaches from the polishing disc. When the lifting module 4 reaches its highest point, the pushing mechanism 3 pushes the disc clamp module 1 out to the designated position. The flipping mechanism 2 flips the disc clamp module 1 from bottom to top so that the polished surface faces upwards. Then, the equipment door is opened, and the test piece is removed, completing the polishing of the test piece.

[0043] Specifically, the disc clamp module 1 has eight clamping stations, and the clamps are pneumatically driven to open and close to fix the test piece on the station. Figure 3 The grippers 12 are arranged in an octagonal shape on the disk 11. An octagonal cylinder is installed at the center of the disk. The cylinder's extension rod drives the grippers to move radially towards the disk. The other half of the grippers is mounted on the outer circumference of the workpiece on the disk. When the cylinder extends or retracts, it drives the grippers to move outward, thus clamping the test piece. A linear guide rail is connected below the grippers to ensure parallelism during opening and closing. The internal structure of the octagonal cylinder is as follows. Figure 4 The cylinder body has a main air passage 15 at its center, and eight small cylinders are arranged at a 45° angle around the circumference of the main air passage. Air inlets 16 connect to the cylinder bodies 13 of these small cylinders. The grippers are available in various sizes to accommodate simultaneous grinding of test pieces of different sizes, such as... Figure 5 The thickness of the test piece to be polished is controlled by adjusting the thickness of the stage. When the test piece is thicker, a thinner stage gripper is used; when the test piece is thinner, a thicker stage gripper is used. The compatible test piece thickness range is 0.5mm-5mm. Figure 6 As shown, by selecting matching grippers, the surfaces of test pieces of different thicknesses are kept on the same plane. When the thickness of the test piece is less than 1 mm, a spacer bonding method is used to directly bond the very thin test piece to the spacer, while the grippers hold the spacer. The spacer can be easily removed for bonding or detachment. Figure 5 The back of the gripper is equipped with a magnet 18 and a pin 19. The magnet is used for vertical attraction, and the pin is used for positioning and fixing. Figure 14As shown, magnet 18 is attracted to the magnetic block portion within the workstation, and pin 19 is inserted into the pin hole. The opening and closing stroke of the grippers is 9.5mm~30.5mm, and the maximum length and width of the specimen that can be gripped is 40x30mm, while the minimum length and width of the specimen is 10x10mm. In summary, the dimensions of the specimens that can be gripped are: length: 10~40mm; width: 10~30mm; thickness: 0.5~5mm.

[0044] The clamp flipping mechanism is as follows Figure 7 and 13 The system comprises a tilting cylinder 22, a gear 24, a rack 23, a bearing 26, a disc clamp module 1, a tilting shaft 25, a positioning device, a linear guide rail, and a floating joint. First, the tilting cylinder 22 drives the rack 23, which in turn drives the gear 24, causing the tilting shaft 25 to rotate. Since the disc clamp module is rigidly connected to the tilting shaft, it also tilts along with the shaft. The positioning device 27, located on one side of the rack, provides positioning for the tilting process, ensuring the disc clamp module achieves the required parallelism after tilting. The linear guide rail, installed below the rack, ensures parallelism during rack movement. The floating joint, positioned between the rack and the cylinder, compensates for any precision issues arising from cylinder installation. The positioning device 27 includes two adjustable positioning rings, a small linear bearing, a shaft (rigidly connected to a rack), and a fixed sheet metal. The two positioning rings are respectively mounted on both ends of the shaft, which also has a small linear bearing mounted on it. The small linear bearing is mounted on the support plane 21 via the fixed sheet metal. The specific working principle is that when the telescopic rod of the cylinder 22 extends to its limit position, the left positioning ring just contacts the small linear bearing to complete the positioning (e.g., ...). Figure 7 (As shown in the image), similarly, when cylinder 22 reaches its minimum stroke, the right locating ring contacts the small linear bearing to complete the positioning.

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

[0046] Figure 9The lifting module shown, lifting module 4, includes a base plate 42, support columns 43, a lifting mechanism 45, linear bearings 41, guide shafts 44, and a lifting base plate 32. Four linear bearings are installed at the four corners of the lifting base plate, and these bearings are fitted onto four guide shafts. The guide shafts are fixed to the base plate 32 by the support columns. The vertical movement of the lifting base plate is driven by a lifting mechanism installed at its rear, as detailed below. Figure 10 It consists of a servo motor, coupling, ball screw 47, nut seat 46, and support plate 48. The nut seat 46 is mounted on the lifting base plate. Figure 9 )superior.

[0047] Polishing grinding wheel module, such as Figure 11 As shown, it consists 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 via the synchronous belt, thereby rotating the grinding disc. A cross-sectional view of the specific polishing mechanism is provided. Figure 12 As shown, the components are, in order: grinding disc 51, water guide groove 52, bearing support, thrust bearing 59, synchronous pulley 54, synchronous belt, drive shaft 58, water guide hole 56, support column 55, and radial ball bearing 57.

[0048] In the above specific embodiments, the disc clamp module is designed to accommodate a variety of test piece sizes, with the following dimensions for clamping test pieces: length: 10-40mm; width: 10-30mm; thickness: 0.5-5mm.

[0049] When clamping test pieces, the disc clamp module can be pushed out of the equipment. Simultaneously, a flipping mechanism is configured for the disc clamp module. During operation, the clamp faces downwards towards the grinding disc; during clamping, the clamp is flipped upwards for easier clamping. The design of the pushing mechanism, flipping mechanism, and magnets makes test piece clamping more convenient, faster, and more user-friendly. In this embodiment, eight test pieces can be automatically polished in a single clamping operation, greatly improving polishing efficiency. In practical applications, different numbers of clamps can be designed.

[0050] The above descriptions are all preferred embodiments of the present invention. For those skilled in the art, any modifications to the present invention in various equivalent forms without departing from the principle of the present invention shall fall within the protection scope of the appended claims.

Claims

1. A polishing apparatus for test pieces, characterized in that: The device includes: The disc clamp module is used to fix or clamp the test piece at the workstation; A flipping mechanism is used to flip the disc clamp module; The pushing mechanism is used to enable the horizontal movement of the moving disc clamp module and the flipping mechanism; The lifting module is used to move the disc clamp module up and down. The polishing disc module is used to polish the test pieces fixed by the disc clamp module; The control module is used to control the operation of the above modules and mechanisms; The disc clamp module is located on top of the polishing disc module. The disc clamp module is flipped by a flipping mechanism. The flipping mechanism and the disc clamp module are moved horizontally by a pushing mechanism. The flipping mechanism, the disc clamp module and the pushing mechanism form a whole and are moved up and down by a lifting module. The disc clamp module includes a disc, and several clamping modules are installed inside the disc. Each clamping module consists of a gripper and a telescopic cylinder. Water nozzles are installed between adjacent clamping modules. The clamping module uses a polygonal cylinder. The center of the polygonal cylinder has a main air passage, and a number of air inlets of the corresponding polygonal number extend evenly along the main air passage. Each air inlet is connected to a small cylinder, which drives the gripper. The back of the gripper is equipped with a magnet and a pin; The flipping mechanism includes a support plane, on which a flipping cylinder is installed. The flipping cylinder is connected to a rack, and the rack 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 sit on bearing seats on both sides. The pushing mechanism includes a pushing cylinder, which sits on a lifting base plate. The base plate is connected to a tilting mechanism via a column. The pushing cylinder is connected to the tilting mechanism via a connecting block. A positioning block is installed on one side of the pushing cylinder. The lifting module includes a base plate, with support columns and guide shafts 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 via the linear bearings under the drive of the lifting mechanism. The lifting mechanism includes a support plate, a servo motor is installed below the support plate, the servo motor is connected to a ball screw through a coupling, and the nut seat on the ball screw is installed on the lifting base plate. The polishing disc module includes a polishing disc servo motor, which transmits torque to the drive shaft via a toothed transmission belt. The polishing disc is connected above the drive shaft, and the polishing disc servo motor drives the polishing disc to rotate.

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