Clamping and positioning device for power supply machining

Abstract

The invention belongs to the technical field of C-shaped accessory machining, and particularly relates to a clamping and positioning device for power supply machining, which comprises a workbench, side plates are fixedly mounted on the two sides of the workbench, and a sliding groove is formed in the surface of the workbench; and the clamping mechanism is arranged at the position of the sliding groove and used for fixing the C-shaped accessory, and the clamping mechanism comprises a two-way screw rod, a fixing wheel, two special-shaped nuts, a clamping wheel and a rotating clutch assembly. According to the machining device, the two clamping wheels approach the fixed wheel, the C-shaped accessory can be conveniently and rapidly clamped and fixed, the positioning plate extrudes one end of the C-shaped accessory, the C-shaped accessory rotates around the circle center of the arc outline of the C-shaped accessory till the two ends of the C-shaped accessory are tightly pressed against the surface of the positioning plate, the C-shaped accessory is prevented from moving in the arc direction in the machining process, and the machining efficiency is improved. And clamping and positioning of the C-shaped accessory are carried out cooperatively and are in close fit, so that the coordination among the mechanisms is improved, and the machining efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of C-shaped parts processing technology, and in particular relates to a clamping and positioning device for power supply processing. Background Technology

[0002] A power supply is a device that provides power to electronic devices; it is also called a power supply unit. It provides the electrical energy needed by all components in a computer. The power output, current, and voltage stability of the power supply directly affect the computer's performance and lifespan. C-shaped fittings are commonly used hardware accessories in power supply equipment. During the production process, C-shaped fittings need to be fixed by clamping devices to facilitate stamping.

[0003] Traditional clamping devices have a fixed structure and can only clamp parts with regular surfaces. When clamping C-shaped parts, it is difficult to ensure their stability during processing. Furthermore, C-shaped parts have an arc-shaped structure, and during processing, they are prone to shifting and moving along their arc direction under force, resulting in deviation of the processing position and affecting product quality. Summary of the Invention

[0004] The purpose of this invention is to address the problems of poor clamping stability and easy displacement of the machining position mentioned in the background art, and to provide a clamping and positioning device for power supply machining.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a clamping and positioning device for power supply processing, comprising:

[0006] A workbench, with side plates fixedly installed on both sides, and a sliding groove formed on the surface of the workbench;

[0007] A clamping mechanism is provided at the slide groove for fixing the C-shaped fitting. The clamping mechanism includes a bidirectional screw, a fixed wheel, two irregular nuts, a clamping wheel, and a rotary clutch assembly.

[0008] The rotary clutch assembly is disposed between the clamping wheel and the shaped nut, and is used to control the rotation and braking of the clamping wheel. The rotary clutch assembly includes a fixed rod, a rotating sleeve, a positioning ring, a tooth, a tooth groove, a No. 1 spring, and a ring electromagnet.

[0009] A positioning mechanism is disposed on the upper surface of the workbench and is used to position the C-shaped parts. The positioning mechanism includes a fixed base, a hydraulic cylinder, a positioning plate, and a control component.

[0010] The control components consist of two sets located on the sidewalls at both ends of the positioning plate. The two sets of control components are electrically connected to the annular electromagnet in series to control the on / off state of the annular electromagnet circuit. Each set of control components includes a fixing plate, a wedge-shaped positioning block, a second spring, a spring pressure plate, and a varistor.

[0011] Furthermore, the bidirectional screw is rotatably connected to the two side plates, and the two irregular nuts are slidably connected to the bottom surface of the workbench, and the two irregular nuts are respectively threaded to the two ends of the bidirectional screw with opposite thread directions.

[0012] Furthermore, a rotating handle is fixedly connected to the bidirectional screw.

[0013] Furthermore, the fixed wheel is rotatably connected to the middle side wall of the slide groove, the two clamping wheels are located on both sides of the fixed wheel, the two rotating clutch assemblies are slidably disposed in the slide groove, and the clamping wheel is connected to the irregular nut through the rotating clutch assembly.

[0014] Furthermore, the fixing rod is fixedly connected to the irregular nut, the rotating sleeve is coaxially fixedly connected to the clamping wheel, and the rotating sleeve is connected to the fixing rod.

[0015] Furthermore, the positioning ring is slidably sleeved on the outside of the fixed rod, the protruding teeth are evenly distributed on the side wall of the positioning ring near the rotating sleeve, and the end of the rotating sleeve is provided with a tooth groove that matches the protruding teeth.

[0016] Furthermore, the first spring is sleeved on the outside of the fixed rod, the positioning ring is connected to the irregular nut through the first spring, the annular electromagnet is fixedly sleeved on the fixed rod, the end of the positioning ring near the annular electromagnet is made of magnetic material, and the positioning ring and the annular electromagnet are repelled by like poles.

[0017] Furthermore, the fixed base is fixedly connected to the upper surface of the workbench, the hydraulic cylinder is mounted on the fixed base, and the positioning plate is connected to the output end of the hydraulic cylinder.

[0018] Furthermore, the wedge-shaped positioning block is slidably connected to the side wall of the positioning plate, the fixing plate is fixedly connected to the side wall of the positioning plate, the wedge-shaped positioning block is connected to the fixing plate through a second spring, the spring pressure plate is fixedly connected to the side wall of the wedge-shaped positioning block, and the varistor is fixedly installed on the fixing plate.

[0019] The present invention has the following advantages:

[0020] 1. This invention, by setting up a clamping mechanism, uses the principle of three points to fix a circle, and moves two clamping wheels closer to the fixed wheel to facilitate the quick clamping and fixing of C-shaped parts. The clamping wheels and the fixed wheel can roll on the surface of the C-shaped parts to avoid scratching them. The synchronous movement of the two clamping wheels is beneficial to improving clamping efficiency.

[0021] 2. This invention, by setting up a positioning mechanism, uses a hydraulic cylinder to push a positioning plate closer to the C-shaped part. The positioning plate presses one end of the C-shaped part, causing the C-shaped part to rotate around the center of its arc contour until both ends of the C-shaped part are pressed against the surface of the positioning plate. At this time, the middle part of the C-shaped part is located at the fixed wheel, which facilitates the rapid positioning of the C-shaped part and prevents it from shifting along its arc direction during processing, ensuring the accuracy of the processing position and thus ensuring product quality.

[0022] 3. By setting up a control component and a rotation clutch component, when both ends of the C-shaped part are in contact with the positioning plate, the annular electromagnet is automatically energized. The magnetic force pushes the positioning ring to move towards the rotating sleeve, and the protruding teeth are engaged in the tooth groove, preventing the rotating sleeve from rotating. This locks the clamping wheel, further preventing the C-shaped part from shifting along its arc direction and improving stability. Furthermore, the on and off of the annular electromagnet is controlled by the position of the positioning plate, so that the clamping and positioning of the C-shaped part are coordinated and closely cooperated, improving the coordination between the various mechanisms and thus improving processing efficiency. Attached Figure Description

[0023] Figure 1 This is a top view of the clamping and positioning device for power supply processing provided by the present invention before positioning.

[0024] Figure 2 This is a side view of a clamping and positioning device for power supply processing provided by the present invention.

[0025] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 This is a top view of the clamping and positioning device for power supply processing provided by the present invention after positioning.

[0027] Figure 5 yes Figure 4 Enlarged view of section B in the middle.

[0028] In the diagram, 1 is the workbench, 11 is the side plate, and 12 is the slide.

[0029] 2. Clamping mechanism, 21. Bidirectional screw, 211. Rotary handle, 22. Fixed wheel, 23. Special-shaped nut, 24. Clamping wheel;

[0030] 25 Rotary clutch assembly, 251 Fixed rod, 252 Rotary sleeve, 253 Positioning ring, 254 Convex tooth, 255 Tooth groove, 256 No. 1 spring, 257 Ring electromagnet;

[0031] 3. Positioning mechanism; 31. Fixed base; 32. Hydraulic cylinder; 33. Positioning plate;

[0032] 34 Control components, 341 Fixing plate, 342 Wedge positioning block, 343 No. 2 spring, 344 spring pressure plate, 345 Varistor. Detailed Implementation

[0033] like Figure 1-5 As shown, a clamping and positioning device for power supply machining includes:

[0034] Workbench 1, with side plates 11 fixedly installed on both sides of workbench 1, and a sliding groove 12 opened on the surface of workbench 1;

[0035] The clamping mechanism 2 is located at the slide groove 12 and is used to fix the C-shaped parts. The clamping mechanism 2 includes a bidirectional screw 21, a fixed wheel 22, two irregular nuts 23, a clamping wheel 24, and a rotary clutch assembly 25.

[0036] The rotary clutch assembly 25 is disposed between the clamping wheel 24 and the shaped nut 23 and is used to control the rotation and braking of the clamping wheel 24. The rotary clutch assembly 25 includes a fixed rod 251, a rotating sleeve 252, a positioning ring 253, a tooth 254, a tooth groove 255, a first spring 256, and a ring electromagnet 257.

[0037] Positioning mechanism 3 is located on the upper surface of workbench 1 and is used to position C-shaped parts. Positioning mechanism 3 includes fixed base 31, hydraulic cylinder 32, positioning plate 33 and control component 34.

[0038] The control components 34 consist of two sets located on the sidewalls at both ends of the positioning plate 33. These two sets of control components 34 are electrically connected to the ring electromagnet 257 via series connection. They are used to control the on / off state of the ring electromagnet 257 circuit. Each control component 34 includes a fixing plate 341, a wedge-shaped positioning block 342, a second spring 343, a spring pressure plate 344, and a varistor 345. The two varistors 345 are connected in series via conductive connection. One varistor 345 is electrically connected to an external power source, and the other is electrically connected to the ring electromagnet 257. The varistor 345 is made of semiconductor material. According to the piezoresistive effect, when a semiconductor is subjected to stress, the energy band changes due to the stress, causing energy movement in the valleys and a change in its resistivity. In its natural state, the varistor 345 has a high resistance, keeping the circuit open. When subjected to pressure, its resistance decreases significantly, thus turning on the circuit of the ring electromagnet 257.

[0039] The bidirectional screw 21 is rotatably connected to two side plates 11, and two irregular nuts 23 are slidably connected to the bottom surface of the workbench 1. The two irregular nuts 23 are respectively engaged with the two ends of the bidirectional screw 21 with opposite thread directions. When the bidirectional screw 21 rotates, it can drive the two irregular nuts 23 to move closer or further away from each other.

[0040] A handle 211 is fixedly connected to the bidirectional screw 21, which makes it easy for the operator to manually rotate the bidirectional screw 21.

[0041] The fixed wheel 22 is rotatably connected to the middle side wall of the slide groove 12. Two clamping wheels 24 are located on both sides of the fixed wheel 22. Two rotating clutch assemblies 25 are slidably disposed in the slide groove 12. The clamping wheel 24 is connected to the shaped nut 23 through the rotating clutch assembly 25. Rubber rings are fitted on the peripheral side walls of both the clamping wheel 24 and the fixed wheel 22 to increase the friction with the surface of the C-shaped fitting.

[0042] During operation, based on the principle of three points defining a circle, the two clamping wheels 24 move closer to the fixed wheel 22, facilitating quick clamping and fixing of the C-shaped part. The clamping wheels 24 and the fixed wheel 22 can roll on the surface of the C-shaped part, preventing scratches. The synchronous movement of the two clamping wheels 24 improves clamping efficiency. It should be noted that the principle of three points defining a circle involves three points not on the same straight line determining a circle. Since the clamping wheels 24 abut against the inner and outer sidewalls of the C-shaped part, and the C-shaped part has a certain thickness, the contact points between the fixed wheel 22 and the two clamping wheels 24 and the C-shaped part are not on the same straight line, thus defining a circle.

[0043] The fixed rod 251 is fixedly connected to the irregular nut 23, and the rotating sleeve 252 is coaxially fixedly connected to the clamping wheel 24. The rotating sleeve 252 is connected to the fixed rod 251.

[0044] The positioning ring 253 is slidably sleeved on the outside of the fixed rod 251. The positioning ring 253 can only slide along the axis of the fixed rod 251. The protruding teeth 254 are evenly distributed on the side wall of the positioning ring 253 near the rotating sleeve 252. The end of the rotating sleeve 252 is provided with a tooth groove 255 that matches the protruding teeth 254.

[0045] Spring 256 is sleeved on the outside of fixed rod 251. Positioning ring 253 is connected to shaped nut 23 through spring 256. Ring electromagnet 257 is fixedly sleeved on fixed rod 251. The end of positioning ring 253 near ring electromagnet 257 is made of magnetic material, and like poles of positioning ring 253 and ring electromagnet 257 repel each other.

[0046] The fixed base 31 is fixedly connected to the upper surface of the workbench 1. The hydraulic cylinder 32 is installed on the fixed base 31. The positioning plate 33 is connected to the output end of the hydraulic cylinder 32. During operation, the hydraulic cylinder 32 pushes the positioning plate 33 closer to the C-shaped part. The positioning plate 33 presses one end of the C-shaped part, causing the C-shaped part to rotate around the center of its arc contour until both ends of the C-shaped part are pressed against the surface of the positioning plate 33. At this time, the middle part of the C-shaped part is located at the fixed wheel 22, which facilitates the rapid positioning of the C-shaped part and prevents it from shifting along its arc direction during processing, ensuring the accuracy of the processing position and thus ensuring product quality.

[0047] The wedge-shaped positioning block 342 is slidably connected to the side wall of the positioning plate 33, the fixing plate 341 is fixedly connected to the side wall of the positioning plate 33, the wedge-shaped positioning block 342 is connected to the fixing plate 341 through the second spring 343, the spring pressure plate 344 is fixedly connected to the side wall of the wedge-shaped positioning block 342, and the varistor 345 is fixedly installed on the fixing plate 341.

[0048] As the positioning plate 33 approaches the end of the C-shaped fitting, the wedge-shaped surface of the wedge-shaped positioning block 342 first contacts the end of the C-shaped fitting. At this time, the C-shaped fitting is pushed to rotate around the center of its arc contour until both ends of the C-shaped fitting contact the two wedge-shaped positioning blocks 342 respectively. Then, the hydraulic cylinder 32 pushes the positioning plate 33 to continue moving, and the wedge-shaped positioning blocks 342 move towards the fixed plate 341. The second spring 343 is compressed, causing the spring pressure plate 344 to press against the varistor 345. When both varistors 345 are compressed, the ring... When the circuit of the annular electromagnet 257 is turned on, the magnetic force pushes the positioning ring 253 to move towards the rotating sleeve 252. The protruding tooth 254 engages in the tooth groove 255, preventing the rotating sleeve 252 from rotating. This locks the clamping wheel 24, further preventing the C-shaped part from shifting along its arc direction and improving stability. Furthermore, the on / off state of the annular electromagnet 257 is controlled by the position of the positioning plate 33, enabling the clamping and positioning of the C-shaped part to be coordinated and closely cooperated, improving the coordination between various mechanisms and thus improving processing efficiency.

Claims

1. A clamping and positioning device for power supply machining, characterized in that, include: A workbench (1) is provided with side plates (11) fixedly installed on both sides of the workbench (1) and a sliding groove (12) is provided on the surface of the workbench (1). The clamping mechanism (2) is located at the slide groove (12) and is used to fix the C-shaped fitting. The clamping mechanism (2) includes a bidirectional screw (21), a fixed wheel (22), two irregular nuts (23), a clamping wheel (24), and a rotating clutch assembly (25). The rotary clutch assembly (25) is disposed between the clamping wheel (24) and the shaped nut (23) and is used to control the rotation and braking of the clamping wheel (24). The rotary clutch assembly (25) includes a fixed rod (251), a rotating sleeve (252), a positioning ring (253), a tooth (254), a tooth groove (255), a first spring (256), and a ring electromagnet (257). Positioning mechanism (3), which is set on the upper surface of the workbench (1) and is used to position the C-shaped parts. The positioning mechanism (3) includes a fixed seat (31), a hydraulic cylinder (32), a positioning plate (33) and a control component (34). The control component (34) has two sets located on the side walls at both ends of the positioning plate (33). The two sets of control components (34) are electrically connected to the annular electromagnet (257) in series to control the on and off of the circuit of the annular electromagnet (257). Each set of control components (34) includes a fixing plate (341), a wedge-shaped positioning block (342), a second spring (343), a spring pressure plate (344), and a varistor (345).

2. The clamping and positioning device for power supply processing according to claim 1, characterized in that, The bidirectional screw (21) is rotatably connected to two side plates (11), and the two irregular nuts (23) are slidably connected to the bottom surface of the workbench (1). The two irregular nuts (23) are respectively threaded to the two ends of the bidirectional screw (21) with opposite thread directions.

3. The clamping and positioning device for power supply processing according to claim 1, characterized in that, A rotating handle (211) is fixedly connected to the bidirectional screw (21).

4. The clamping and positioning device for power supply processing according to claim 1, characterized in that, The fixed wheel (22) is rotatably connected to the middle side wall of the slide groove (12), the two clamping wheels (24) are located on both sides of the fixed wheel (22), the two rotating clutch assemblies (25) are slidably disposed in the slide groove (12), and the clamping wheel (24) is connected to the shaped nut (23) through the rotating clutch assembly (25).

5. The clamping and positioning device for power supply processing according to claim 1, characterized in that, The fixed rod (251) is fixedly connected to the shaped nut (23), the rotating sleeve (252) is coaxially fixedly connected to the clamping wheel (24), and the rotating sleeve (252) is connected to the fixed rod (251).

6. The clamping and positioning device for power supply processing according to claim 1, characterized in that, The positioning ring (253) is slidably sleeved on the outside of the fixed rod (251). The protruding teeth (254) are evenly distributed on the side wall of the positioning ring (253) near the rotating sleeve (252). The end of the rotating sleeve (252) is provided with a tooth groove (255) that matches the protruding teeth (254).

7. The clamping and positioning device for power supply processing according to claim 1, characterized in that, The first spring (256) is sleeved on the outside of the fixed rod (251). The positioning ring (253) is connected to the shaped nut (23) through the first spring (256). The annular electromagnet (257) is fixedly sleeved on the fixed rod (251). The end of the positioning ring (253) near the annular electromagnet (257) is made of magnetic material, and the positioning ring (253) and the annular electromagnet (257) are repelled by their like poles.

8. The clamping and positioning device for power supply processing according to claim 1, characterized in that, The fixed base (31) is fixedly connected to the upper surface of the workbench (1), the hydraulic cylinder (32) is installed on the fixed base (31), and the positioning plate (33) is connected to the output end of the hydraulic cylinder (32).

9. The clamping and positioning device for power supply processing according to claim 1, characterized in that, The wedge-shaped positioning block (342) is slidably connected to the side wall of the positioning plate (33), the fixing plate (341) is fixedly connected to the side wall of the positioning plate (33), the wedge-shaped positioning block (342) is connected to the fixing plate (341) through the second spring (343), the spring pressure plate (344) is fixedly connected to the side wall of the wedge-shaped positioning block (342), and the varistor (345) is fixedly installed on the fixing plate (341).

Images