Bearing device carried on wire cutting machine and used for assisting cutting and grinding of additive samples

Abstract

The invention discloses a bearing device carried on a wire cutting machine and used for assisting in cutting and grinding of an additive sample, the bearing device comprises a rack, a bearing seat, a mounting seat, a grinding disc and a grinding disc seat, the mounting seat is arranged on the rack, and the mounting seat can rotate in the vertical Z-axis direction and linearly move in the Y-axis direction on the rack; the grinding disc seat is detachably assembled on the mounting seat, the grinding disc is rotationally connected to the grinding disc seat, and the grinding disc rotates in the Y-axis direction; the bearing seat is arranged on the mounting seat, and the bearing seat can do linear displacement in the Y-axis direction and rotate in the Y-axis direction on the mounting seat. Sample cutting and sample grinding are continuously completed in the same wire cutting machine platform, carrying and secondary clamping are reduced, and accumulated positioning and centering errors are remarkably reduced. The device realizes functions based on a pure mechanical structure, utilizes the existing movement and platform precision of the wire cutting machine, and is low in manufacturing and maintenance cost and convenient to deploy.

Description

Technical Field

[0001] This invention relates to a support device mounted on a wire EDM machine for assisting in the cutting and grinding of additive manufacturing samples. Background Technology

[0002] After printing and removing supports, porous samples manufactured using additive manufacturing (such as lattice / honeycomb) often exhibit unevenness, non-parallelism, and insufficient perpendicularity on their upper and lower end faces. Directly conducting fatigue or compression tests can easily lead to eccentric loading and additional bending, resulting in large curve fluctuations and high data dispersion, making it difficult to conduct comparable studies on samples with different structural parameters. Current practices involve cutting the sample end faces with a wire EDM machine to achieve a flat surface, followed by grinding. The drawback is that after cutting the sample on the wire EDM machine, it is then transferred to other equipment for grinding / polishing. This cross-equipment / multiple clamping process inevitably introduces repositioning errors and visual tool setting errors. Furthermore, the porous sample structure is fragile, and frequent handling and clamping can cause damage to the pore walls or edge collapse, further amplifying testing errors and repeatability issues. Summary of the Invention

[0003] The present invention provides a support device for auxiliary additive sample cutting and grinding mounted on a wire EDM machine to solve the problems existing in the prior art.

[0004] The technical solutions adopted in this invention are as follows:

[0005] A support device for auxiliary additive sample cutting and grinding on a wire EDM machine includes a frame, a support base, a mounting base, a grinding disc, and a grinding disc seat. The mounting base is mounted on the frame and can rotate along the vertical Z-axis and move linearly along the Y-axis. The grinding disc seat is detachably mounted on the mounting base, and the grinding disc is rotatably connected to the grinding disc seat and can rotate along the Y-axis. The support base is mounted on the mounting base and can move linearly along the Y-axis and rotate along the Y-axis.

[0006] Furthermore, the frame is provided with a slider, which can be linearly displaced along the Y-axis. The mounting base is rotatably connected to the slider, and the mounting base can rotate along the Z-axis on the slider.

[0007] Furthermore, the frame is provided with clamps and screws. Two clamps are slidably connected to the frame and placed on both sides of the slider. Each clamp is rotatably connected to a screw, and the two screws are threadedly connected to the frame. The two clamps clamp the slider and lock it in place after linear displacement.

[0008] Furthermore, the mounting base is threaded with a locking bolt, which abuts against the slider and locks the mounting base in the rotated position.

[0009] Furthermore, the mounting base is provided with an arc groove.

[0010] An arc seat coaxial with the arc groove is rotatably connected inside the arc groove. The bearing seat is located on the arc seat. The bearing seat can be rotated along the Y-axis on the mounting seat by rotating the arc seat.

[0011] Furthermore, an arc-shaped limiting toothed piece is fixed inside the arc groove, and an elastic element is provided on the arc seat. The free end of the elastic element extends into the tooth groove of the arc-shaped limiting toothed piece and locks the arc seat in the position after rotation.

[0012] Furthermore, the elastic element includes a guide rod, a spring, and a limiting pin. The guide rod is elastically supported on the arc seat by the spring, and the limiting pin is fixed to the end of the guide rod. The limiting pin abuts against the tooth groove by the elastic force of the spring.

[0013] Furthermore, the arc-shaped seat is provided with a slide rail and a hand-cranked screw mechanism arranged along the Y-axis. The bearing seat is slidably connected to the slide rail and driven by the hand-cranked screw mechanism to achieve linear displacement along the Y-axis.

[0014] Furthermore, the bearing seat includes a telescopic rod, clamping blocks, and a support block. Two slide rails are provided, symmetrically arranged on both sides of the hand-cranked screw mechanism. The two telescopic rods slide on the two slide rails respectively. One telescopic rod is fixed to the straight free end of the hand-cranked screw mechanism. Two clamping blocks are fixed to the ends of the telescopic rods on the slide rails. The support block is fixed to the ends of the telescopic rods on the hand-cranked screw mechanism, and the two clamping blocks are symmetrically located on both sides of the support block.

[0015] Furthermore, the telescopic rod includes a sub-rod, a main rod, and a locking bolt. The sub-rod is inserted into the main rod, and the locking bolt is threaded onto the main rod, passes through the main rod, and abuts against the sub-rod.

[0016] Furthermore, the grinding disc base is provided with a rectangular insertion cavity, and the mounting base is provided with a connector. The rectangular insertion cavity is inserted into the connector, thereby realizing the separable assembly between the grinding disc base and the mounting base.

[0017] Furthermore, the grinding disc base includes a mounting frame and a sleeve, with two sleeves symmetrically fixed on the mounting frame, and the sleeves having rectangular insertion cavities; the grinding disc is rotatably connected to the mounting frame, and the grinding disc is driven by hand crank or motor.

[0018] The present invention has the following beneficial effects:

[0019] (1) Integrated platform (cutting + grinding): cutting and grinding are completed continuously within the same wire cutting machine platform, reducing handling and secondary clamping, and significantly reducing cumulative positioning and centering errors.

[0020] (2) Purely mechanical and low cost: The device realizes its function based on a purely mechanical structure, utilizing the existing motion and platform precision of the wire cutting machine, resulting in low manufacturing and maintenance costs and convenient deployment.

[0021] (3) Reduce end face geometric errors: Completing end face processing in the same coordinate system helps to obtain a flatter and more parallel loading surface, reducing test deviations caused by eccentric loading and additional bending.

[0022] (4) Improve data consistency and comparability: After the end face quality and centering are improved, the dispersion of fatigue / compression data is reduced, which is conducive to scientific comparison and statistical analysis between different porous structures.

[0023] (5) Reduce the risk of sample damage: reduce cross-device transfer and multiple clamping, reduce the probability of porous structures being damaged by pressure, scratched or collapsed, and improve sample preservation and sample preparation yield.

[0024] (6) By completing “fixed thickness cutting (setting a reference plane) → surface grinding (eliminating wire cutting marks and correcting parallelism)” in the same coordinate system, the two processes can be completed on-site with one clamping, which significantly reduces the errors in surface shape, parallelism and perpendicularity, reduces the dispersion of mechanical data, and improves the comparability and statistical significance of samples with different porous structures. Attached Figure Description

[0025] Figure 1 This is a structural diagram of the present invention.

[0026] Figure 2 This is a structural diagram of the present invention.

[0027] Figure 3 This is an assembly drawing showing the device mounted on a frame.

[0028] Figure 4 This is an assembly drawing showing the mounting base on the slider.

[0029] Figure 5 This is a structural diagram for maintaining the fixed position of the rotating arc seat.

[0030] Figure 6 This is an assembly drawing of the grinding disc and grinding disc base. Detailed Implementation

[0031] The invention will now be further described with reference to the accompanying drawings.

[0032] like Figures 1 to 3 The present invention provides a support device for auxiliary additive sample cutting and grinding mounted on a wire EDM machine, comprising a frame 1, a support seat 2, a mounting seat 3, a grinding disc 4, and a grinding disc seat 5.

[0033] Mounting base 3 is mounted on frame 1, and can perform linear displacement along the Y-axis and rotation along the vertical Z-axis (i.e., rotation within the XY plane) on frame 1. Grinding disc base 5 is detachably mounted on mounting base 3, and together with mounting base 3, performs the aforementioned rotation along the Z-axis and linear displacement along the Y-axis. Grinding disc 4 is rotatably connected to grinding disc base 5, and can rotate along the Y-axis. Bearing base 2 is mounted on mounting base 3, and can perform linear displacement along the Y-axis and rotation along the Y-axis (i.e., rotation within the XZ plane) on mounting base 3.

[0034] To enable the mounting base 3 to make linear displacement along the Y-axis on the frame 1, a slider 11 is provided on the frame 1. The slider 11 is slidably connected to the frame and can make linear displacement along the Y-axis. A turntable 30 is provided at the bottom of the mounting base 3. The turntable 30 is rotatably connected to the slider 11 through a rotating shaft. With this structure, the mounting base 3 can rotate along the Z-axis on the slider 11.

[0035] After the slider 11 slides to the desired target position, in order to lock the slider at the desired target position, the frame 1 is provided with a clamp 12 and a screw 13. The two clamps 12 are slidably connected to the frame 1 along the X-axis and placed on both sides of the slider 11. The screw 13 is rotatably connected to each clamp 12, and the two screws 13 are threadedly connected to the frame 1. After the slider 11 is linearly displaced to the desired target position, the screw 13 is manually rotated so that the two clamps 12 move towards each other and clamp the slider 11, thereby locking the slider and keeping it in the position after linear displacement.

[0036] After the mounting base 3 is rotated along the Z-axis to the desired target angle, a locking bolt 31 is threaded onto the turntable 30 to lock the mounting base 3 in the desired target position. The locking bolt 31 abuts against the slider 11 and locks the mounting base 3 in the position after rotation.

[0037] Combination Figure 4 The mounting base 3 is a semi-circular base, and a semi-circular arc base 6 is rotatably connected in the arc groove of the mounting base 3. The arc base 6 is coaxial with the mounting base 3. The bearing seat 2 is set on the arc base 6. The bearing seat 2 can be rotated on the mounting base 3 along the Y-axis by rotating the arc base 6.

[0038] The arc-shaped base 6 is slidably connected to the mounting base 3 via an arc-shaped track (or an arc-shaped turntable), such as... Figure 5 In order to lock the arc seat 6 at the desired target position, an arc limiting tooth 7 is fixed in the arc groove. An elastic element is provided on the arc seat 6, and the free end of the elastic element extends into the tooth groove 71 of the arc limiting tooth 7, thus locking the arc seat 6 in the position after rotation.

[0039] The elastic element includes a guide rod 81, a spring 82, and a limiting pin 83. The guide rod 81 is a T-shaped guide rod that passes through the arc seat 6. The spring 82 is sleeved on the guide rod 81, and the guide rod 81 is elastically supported on the arc seat 6 by the spring 82. The limiting pin 83 is arranged along the Y-axis and fixed to the end of the guide rod 81. Under the elastic force of the spring 82, the limiting pin 83 abuts against the tooth groove 71.

[0040] When it is necessary to rotate the arc seat 6, pull the guide rod 81 upward and make the limit pin 83 completely disengage from the tooth groove 71. Then rotate the arc seat 6 to the desired position and then put the guide rod 81 down. At this time, the limit pin 83 will re-abut in the tooth groove 71 at the corresponding position, thereby locking the rotation of the arc seat 6.

[0041] To enable the bearing seat 2 to make linear displacement along the Y-axis on the mounting seat 3, a slide rail 61 and a hand-cranked screw mechanism 62 are provided on the arc seat 6. The bearing seat 2 is slidably connected to the slide rail and driven by the hand-cranked screw mechanism 62 to achieve linear displacement along the Y-axis.

[0042] The support seat 2 includes a telescopic rod 21, a clamping block 22, and a support block 23. Two slide rails 61 are provided and are symmetrically fixed on both sides of the arc seat 6. The hand-cranked screw mechanism is fixed at the center of the arc surface of the arc seat 6. The two telescopic rods 21 slide on the two slide rails 61 respectively. One telescopic rod 21 is fixed to the straight free end of the hand-cranked screw mechanism 62. The two clamping blocks 22 are fixed to the ends of the telescopic rods on the slide rails. The support block 23 is fixed to the ends of the telescopic rods on the hand-cranked screw mechanism, and the two clamping blocks 22 are symmetrically located on both sides of the support block 23.

[0043] When fixing the porous sample manufactured by additive manufacturing, the sample is placed on the support block 23, and the two clamping blocks 22 are clamped together by the telescopic rod 21 to fix the sample.

[0044] The telescopic pole 21 includes a sub-pole, a main pole, and a locking bolt. The sub-pole is inserted into the main pole, and the locking bolt is threaded onto the main pole, passes through the main pole, and abuts against the sub-pole.

[0045] like Figure 6 The grinding disc base 5 includes a mounting frame 52 and two sleeves 53. Two sleeves 53 are symmetrically fixed on the mounting frame 52, and each sleeve 53 has a rectangular insertion cavity 51. The mounting base 3 has insertion connectors at both ends, and the rectangular insertion cavities 51 are inserted into these connectors, enabling a detachable assembly between the grinding disc base 5 and the mounting base 3. The grinding disc 4 is rotatably connected to the mounting frame 52 and is driven by a hand crank or a motor.

[0046] In use, the sample is fixed on the support 2, and then its position is adjusted so that the cut surface after wire cutting is parallel to the grinding surface of the grinding disc 4. After the position is adjusted, the freedom of all movable parts is constrained. Then, wire cutting is performed. During the cutting process, the grinding disc 5 is separated from the mounting base 3. After the cutting is completed, the grinding disc 5 is assembled onto the mounting base 3, and then the mounting base is rotated 180° and fixed. The support 2 is moved by the hand-cranked screw mechanism 62 so that the cut surface of the sample contacts the grinding surface of the grinding disc 4, and the grinding disc 4 is rotated for grinding.

[0047] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be considered within the scope of protection of the present invention.

Claims

1. A support device mounted on a wire EDM machine for auxiliary additive sample cutting and grinding, characterized in that: The assembly includes a frame (1), a support (2), a mounting base (3), a grinding disc (4), and a grinding disc seat (5). The mounting base (3) is mounted on the frame (1) and can rotate along the vertical Z-axis and move linearly along the Y-axis on the frame (1). The grinding disc seat (5) is detachably mounted on the mounting base (3). The grinding disc (4) is rotatably connected to the grinding disc seat (5) and can rotate along the Y-axis. The support (2) is mounted on the mounting base (3) and can move linearly along the Y-axis and rotate along the Y-axis on the mounting base (3).

2. The support device for auxiliary additive sample cutting and grinding on a wire EDM machine as described in claim 1, characterized in that: The frame (1) is provided with a slider (11), which can be linearly displaced along the Y-axis. The mounting base (3) is rotatably connected to the slider (11), and the mounting base (3) can rotate along the Z-axis on the slider (11).

3. The support device for auxiliary additive sample cutting and grinding on a wire EDM machine as described in claim 2, characterized in that: The frame (1) is provided with a clamp (12) and a screw (13). The two clamps (12) are slidably connected to the frame (1) and placed on both sides of the slider (11). The screw (13) is rotatably connected to each clamp (12), and the two screws (13) are threadedly connected to the frame (1). The two clamps (12) clamp the slider (11) and lock the slider to the position after linear displacement.

4. The support device for auxiliary additive sample cutting and grinding on a wire EDM machine as described in claim 2, characterized in that: The mounting base (3) is threaded with a locking bolt (31), which abuts against the slider (11) and locks the mounting base (3) in the position after rotation.

5. The support device for auxiliary additive sample cutting and grinding on a wire EDM machine as described in claim 1, characterized in that: The mounting base (3) is provided with an arc groove, and an arc seat (6) coaxial with the arc groove is rotatably connected in the arc groove. The bearing seat (2) is located on the arc seat (6). The bearing seat (2) can rotate along the Y-axis on the mounting base (3) by rotating the arc seat (6).

6. The support device for auxiliary additive sample cutting and grinding on a wire EDM machine as described in claim 5, characterized in that: An arc-shaped limiting toothed piece (7) is fixed inside the arc groove. An elastic element is provided on the arc seat (6). The free end of the elastic element extends into the tooth groove (71) of the arc-shaped limiting toothed piece (7) and locks the arc seat (6) in the position after rotation.

7. The support device for auxiliary additive sample cutting and grinding on a wire EDM machine as described in claim 6, characterized in that: The elastic element includes a guide rod (81), a spring (82) and a limiting pin (83). The guide rod (81) is elastically supported on the arc seat (6) by the spring (82). The limiting pin (83) is fixed to the end of the guide rod (81) and the limiting pin (83) abuts against the tooth groove (71) by the elastic force of the spring.

8. The support device for auxiliary additive sample cutting and grinding on a wire EDM machine as described in claim 5, characterized in that: The arc seat (6) is provided with a slide rail (61) arranged along the Y-axis and a hand crank screw mechanism (62). The bearing seat (2) is slidably connected to the slide rail and driven by the hand crank screw mechanism (62) to achieve linear displacement along the Y-axis.

9. The support device for auxiliary additive sample cutting and grinding on a wire EDM machine as described in claim 8, characterized in that: The bearing seat (2) includes a telescopic rod (21), a clamping block (22) and a support block (23). The slide rail (61) has two rods, which are symmetrically arranged on both sides of the hand-cranked screw mechanism (62). The two telescopic rods (21) slide on the two slide rails (61) respectively. One telescopic rod (21) is fixed to the straight free end of the hand-cranked screw mechanism (62). The two clamping blocks (22) are fixed to the ends of the telescopic rods on the slide rails. The support block (23) is fixed to the ends of the telescopic rods on the hand-cranked screw mechanism, and the two clamping blocks (22) are symmetrically located on both sides of the support block (23).

10. The support device for auxiliary additive sample cutting and grinding on a wire EDM machine as described in claim 9, characterized in that: The telescopic rod (21) includes a sub-rod, a main rod, and a locking bolt. The sub-rod is inserted into the main rod, and the locking bolt is threaded onto the main rod, passes through the main rod, and abuts against the sub-rod.

11. The support device for auxiliary additive sample cutting and grinding on a wire EDM machine as described in claim 1 or 5, characterized in that: The grinding disc base (5) is provided with a rectangular insertion cavity (51), and the mounting base (3) is provided with a plug. The rectangular insertion cavity (51) is inserted into the plug, so as to realize the separable assembly between the grinding disc base (5) and the mounting base (3).

12. The support device for auxiliary additive sample cutting and grinding on a wire EDM machine as described in claim 11, characterized in that: The grinding disc base (5) includes a mounting frame (52) and a sleeve (53). The two sleeves (53) are symmetrically fixed on the mounting frame (52). The sleeves (53) are provided with rectangular insertion cavities (51). The grinding disc (4) is rotatably connected to the mounting frame (52). The grinding disc is driven by hand or by a motor.

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