Fixture capable of achieving rapid machining and precise positioning and clamping

Abstract

The utility model provides a clamp for rapid machining and precise positioning and clamping, and relates to the technical field of clamps. The clamp for machining rapid and precise positioning and clamping comprises a bottom plate, two vertical plates are fixedly installed at the top of the bottom plate, a movable plate is arranged between the two vertical plates, and L-shaped positioning frames are fixedly installed on one side of one vertical plate and one side of the movable plate. According to the clamp for machining rapid and precise positioning and clamping, a rotating handle is rotated to drive a first worm to rotate, so that a first worm gear rotates in an engaged mode, one set of rotating shafts and one polygonal strip are driven to rotate, one chain wheel rotates along with the rotating shafts, and then the other chain wheel is driven to rotate through a chain; and the other set of rotating shafts and the other polygonal strip rotate along with the rotating shafts, so that four first gears rotate to drive four racks to move downwards to position and fix the hardware in the vertical direction, the positioning effect of the device is effectively improved, multiple times of rotation are not needed for positioning and fixing in the operation process, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to a fixture, specifically a fixture for rapid precision positioning and clamping in machining, belonging to the technical field of fixtures. Background Technique

[0002] The numerical control automation machining technology can directly machine any products and parts automatically according to the programs pre-compiled by technicians. Using a numerical control lathe to machine parts with complex shapes not only improves labor productivity and machining quality, but also shortens the production preparation cycle and reduces the requirements for the technical proficiency of workers.

[0003] There is currently a fixture for rapid precision positioning and clamping in the numerical control automation machining of hardware parts with the publication number CN214979298U, including a bottom plate. A positioning and clamping plate is fixedly connected to the rear side of the upper end of the bottom plate. Symmetrically arranged adjustment grooves are opened on the front side of the upper end of the bottom plate. An adjustment block is slidably connected in the adjustment groove. The upper ends of the adjustment block and another adjustment block are fixedly connected with a movable clamping plate. Symmetrically arranged long threaded rods are fixedly connected to the front end of the positioning and clamping plate. The front end of the long threaded rod extends forward through a through hole. Symmetrically arranged sliding grooves are opened on the upper ends of the positioning and clamping plate and the movable clamping plate. A sliding block is slidably connected in the sliding groove. A vertical support plate is fixedly connected to the upper end of the sliding block.

[0004] In the above scheme, although there are many benefits, there are also the following defects: when positioning and fixing the hardware parts to be machined placed on the L-shaped positioning support plate, the rubber pressing columns are adjusted and moved correspondingly by respectively rotating the threaded columns in the four threaded holes. Multiple operations are required when fixing the hardware parts, which is rather cumbersome to use and reduces the practicability of the device. Content of the Utility Model

[0005] Technical Problem to be Solved

[0006] The purpose of the present utility model is to provide a fixture for rapid precision positioning and clamping in machining to solve the above problems, so as to solve the problem that multiple operations are required when fixing hardware parts in the prior art, which is rather cumbersome to use and reduces the practicability of the device.

[0007] Technical Solution

[0008] The utility model is realized through the following technical scheme: a fixture for processing fast and precise positioning and clamping, comprising a base plate, two vertical plates are fixedly installed on the top of the base plate, a movable plate is arranged between the two vertical plates, one side of one of the vertical plates and the movable plate is fixedly installed with an L-shaped positioning frame, a fixed structure is arranged between the two vertical plates, and the fixed structure comprises four rotating shafts, the four rotating shafts are respectively rotatably installed on one side of the two vertical plates, wherein the outer sides of the two rotating shafts are fixedly installed with a No. 1 gear, one side of the vertical plates and the movable plate is fixedly installed with a fixed plate, the fixed plate is provided with two square sliding grooves, two sleeves are rotatably installed on one side of the movable plate, a No. 2 gear is fixedly installed on one end of the sleeve, the outer sides of the two No. 1 gears and the two No. 2 gears are meshed and connected with racks, the four racks are respectively arranged in the square sliding grooves of the fixed plate and in sliding contact with the fixed plate, and rubber pads are arranged at the bottom of the four racks, and the arranged rubber pads can produce a certain protective effect on the hardware when the racks press down and fix the hardware, so as to prevent the hardware from being deformed.

[0009] Preferably, the four rotating shafts are grouped in pairs, and a polygonal bar is fixedly installed between each group of rotating shafts. The two polygonal bars penetrate the two sleeves respectively and are in sliding contact with the two sleeves respectively. The two sleeves and the moving plate are provided with circular notches. The size of the polygonal bar is smaller than the size of the circular notches, and the size of the circular notches provided in the sleeves and the moving plate is larger than the size of the polygonal bar, so that the polygonal bar can have no contact with the sleeve and the moving plate. When the polygonal bar rotates, it will only drive the No. 2 gear to rotate. The No. 2 gear is penetrated by the polygonal bar and is in sliding contact with it, so that the No. 2 gear can slide on the outside of the polygonal bar, and when the polygonal bar rotates, it will drive the No. 2 gear to rotate accordingly.

[0010] Preferably, one end of each of the two rotating shafts passes through one of the vertical plates and is fixedly mounted with a sprocket, a chain is sleeved on the outer side of the two sprockets, and the two sprockets are connected by chain transmission.

[0011] Preferably, one end of the other rotating shaft passes through another vertical plate and is fixedly mounted with a No. 1 worm wheel, one side of the other vertical plate is fixedly mounted with two No. 1 fixing seats, a No. 1 worm is rotatably mounted between the two No. 1 fixing seats, the No. 1 worm is meshingly connected with the No. 1 worm wheel, and one end of the No. 1 worm passes through one of the No. 1 fixing seats and is fixedly mounted with a turning handle.

[0012] Preferably, a clamping structure is provided between the two vertical plates, and the clamping structure includes two screw rods, which are rotatably installed between the two vertical plates, and the movable plate is connected to the outside of the two screw rods through a nut pair, and the thread directions of the two screw rods are opposite.

[0013] Preferably, one end of each of the two lead screws penetrates through the other vertical plate and is fixedly installed with a first bevel gear. On one side of the other vertical plate, two second fixing seats are fixedly installed. Between the two second fixing seats, a connecting shaft is rotatably installed. The two ends of the connecting shaft respectively penetrate through the two second fixing seats and are fixedly installed with second bevel gears. The two first bevel gears are respectively meshed and connected with the two second bevel gears.

[0014] Preferably, a second worm gear is fixedly installed on the outer side of the connecting shaft. On one side of the other vertical plate, an L-shaped plate is fixedly installed. Between the L-shaped plate and the other vertical plate, a second worm is rotatably installed. The second worm is meshed and connected with the second worm gear. One end of the second worm penetrates through the L-shaped plate and is fixedly installed with a knob.

[0015] The present utility model provides a fixture for rapid precision positioning and clamping in machining, and its beneficial effects are as follows:

[0016] For the fixture for rapid precision positioning and clamping in machining, by rotating the turning handle to drive the first worm to rotate, the first worm gear meshes and rotates, so as to drive one set of rotating shafts and one polygon bar to rotate, making one of the sprockets rotate accordingly. Then, through the chain, the other sprocket is driven to rotate, so that the other set of rotating shafts and the other polygon bar rotate accordingly, thereby making all four first gears rotate, driving the four racks to move downward to position and fix the hardware in the vertical direction, effectively improving the positioning effect of the device, and without the need to rotate multiple times for positioning and fixing during operation, improving the practicability of the device.

[0017] For the fixture for rapid precision positioning and clamping in machining, by rotating the knob to drive the second worm to rotate, the second worm gear meshes and rotates, and then through the connecting shaft, the two second bevel gears are driven to rotate, thereby driving the two first bevel gears to mesh and rotate, making the two lead screws rotate, and driving the moving plate to move towards one of the vertical plates to clamp and fix the hardware. There is no need to operate multiple times to clamp the hardware, making the device more convenient to use and improving the use effect of the device. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 It is a schematic diagram of the fixing structure of the present utility model;

[0020] Figure 3 For the present utility model Figure 2 An enlarged view of the structure of part A;

[0021] Figure 4 It is a schematic diagram of the clamping structure of the present utility model.

[0022]

Symbol Explanation of Main Components

[0023] 1. Bottom plate; 2. Vertical plate; 201. Moving plate; 3. L-shaped positioning frame; 4. Rotating shaft; 5. Gear No. 1; 6. Rack; 7. Fixed plate; 8. Polygonal bar; 9. Sleeve; 10. Gear No. 2; 11. Sprocket; 12. Chain; 13. Worm gear No. 1; 14. Fixed seat No. 1; 15. Worm gear No. 1; 16. Turning handle; 17. Screw; 18. Bevel gear No. 1; 19. Fixed seat No. 2; 20. Connecting shaft; 21. Bevel gear No. 2; 22. Worm gear No. 2; 23. L-shaped plate; 24. Worm gear No. 2; 25. Knob. Specific implementation method

[0024] The embodiment of the utility model provides a fixture for rapid and precise positioning and clamping.

[0025] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , comprising a bottom plate 1, two vertical plates 2 are fixedly installed on the top of the bottom plate 1, a moving plate 201 is arranged between the two vertical plates 2, one side of one of the vertical plates 2 and the moving plate 201 are fixedly installed with an L-shaped positioning frame 3, a fixed structure is arranged between the two vertical plates 2, the fixed structure comprises four rotating shafts 4, the four rotating shafts 4 are respectively rotatably installed on one side of the two vertical plates 2, wherein the outer sides of the two rotating shafts 4 are fixedly installed with a No. 1 gear 5, one side of the vertical plates 2 and the moving plate 201 are fixedly installed with a fixed plate 7, the fixed plate 7 is provided with two square sliding grooves, one side of the moving plate 201 is rotatably installed with two sleeves 9, one end of the sleeve 9 is fixedly installed with a No. 2 gear 10, the outer sides of the two No. 1 gears 5 and the two No. 2 gears 10 are meshed and connected with racks 6, and the four racks 6 are respectively arranged in the square sliding grooves of the fixed plate 7 and are in sliding contact with the fixed plate 7.

[0026] In this embodiment, four rotating shafts 4 are grouped in pairs, and a polygonal strip 8 is fixedly installed between each group of rotating shafts 4. Two polygonal strips 8 respectively penetrate two sleeves 9 and respectively slide in contact with the two sleeves 9. The two sleeves 9 and the moving plate 201 are both provided with circular notches, and the size of the polygonal strip 8 is smaller than the size of the circular notches.

[0027] In this embodiment, one end of each of the two rotating shafts 4 passes through one of the vertical plates 2 and is fixedly mounted with a sprocket 11. A chain 12 is sleeved on the outer side of the two sprockets 11, and the two sprockets 11 are connected by the chain 12.

[0028] In this embodiment, one end of another rotating shaft 4 penetrates through another vertical plate 2 and is fixedly installed with a first worm gear 13. On one side of another vertical plate 2, two first fixing seats 14 are fixedly installed. A first worm 15 is rotatably installed between the two first fixing seats 14. The first worm 15 is meshed and connected with the first worm gear 13. One end of the first worm 15 penetrates through one of the first fixing seats 14 and is fixedly installed with a turning handle 16.

[0029] In this embodiment, a clamping structure is arranged between the two vertical plates 2. The clamping structure includes two lead screws 17. The two lead screws 17 are rotatably installed between the two vertical plates 2. The moving plate 201 is connected to the outer sides of the two lead screws 17 through a nut pair.

[0030] In this embodiment, one end of each of the two lead screws 17 penetrates through another vertical plate 2 and is fixedly installed with a first bevel gear 18. On one side of another vertical plate 2, two second fixing seats 19 are fixedly installed. A connecting shaft 20 is rotatably installed between the two second fixing seats 19. The two ends of the connecting shaft 20 respectively penetrate through the two second fixing seats 19 and are fixedly installed with second bevel gears 21. The two first bevel gears 18 are respectively meshed and connected with the two second bevel gears 21.

[0031] In this embodiment, a second worm gear 22 is fixedly installed on the outer side of the connecting shaft 20. An L-shaped plate 23 is fixedly installed on one side of another vertical plate 2. A second worm 24 is rotatably installed between the L-shaped plate 23 and another vertical plate 2. The second worm 24 is meshed and connected with the second worm gear 22. One end of the second worm 24 penetrates through the L-shaped plate 23 and is fixedly installed with a knob 25.

[0032] It should be noted that the present utility model is a fixture for rapid precision positioning and clamping during processing. When in use, one side of the hardware part to be processed is placed on the top of one of the L-shaped positioning frames 3 and abuts against one of the vertical plates 2. Then, the knob 25 is rotated to drive the second worm 24 to rotate, so that the second worm gear 22 meshes and rotates. Then, the two second bevel gears 21 are driven to rotate through the connecting shaft 20, thereby driving the two first bevel gears 18 to mesh and rotate, so that the two lead screws 17 rotate, thereby driving the moving plate 201 to move towards one of the vertical plates 2 to clamp and fix the hardware part. There is no need to perform multiple operations to clamp the hardware part, making the device more convenient to use and improving the use effect of the device;

[0033] After clamping the hardware horizontally, rotate the handle 16 to drive the first worm 15 to rotate, causing the first worm gear 13 to mesh and rotate, thereby driving one set of rotating shafts 4 and one polygon bar 8 to rotate, causing one of the sprockets 11 to rotate accordingly, and then driving another sprocket 11 to rotate through the chain 12, causing the other set of rotating shafts 4 and another polygon bar 8 to rotate accordingly, so that all four first gears 5 rotate, driving the four racks 6 to move downward to position and fix the hardware in the vertical direction, effectively improving the positioning effect of the device, and the operation does not require multiple rotations for positioning and fixing, improving the practicability of the device.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixture for machining fast and precise positioning and clamping, comprising a base plate (1), characterized in that: Two vertical plates (2) are fixedly mounted on the top of the bottom plate (1), a movable plate (201) is arranged between the two vertical plates (2), an L-shaped positioning frame (3) is fixedly mounted on one side of one of the vertical plates (2) and the movable plate (201), a fixed structure is arranged between the two vertical plates (2), the fixed structure comprises four rotating shafts (4), the four rotating shafts (4) are rotatably mounted on one side of the two vertical plates (2), the outer sides of two of the rotating shafts (4) are fixedly mounted with a No. 1 gear (5), wherein A fixed plate (7) is fixedly mounted on one side of the vertical plate (2) and the movable plate (201), and the fixed plate (7) is provided with two square sliding grooves. Two sleeves (9) are rotatably mounted on one side of the movable plate (201), and a second gear (10) is fixedly mounted on one end of the sleeve (9). Racks (6) are meshingly connected to the outer sides of the two first gears (5) and the two second gears (10), and the four racks (6) are respectively arranged in the square sliding grooves of the fixed plate (7) and are in sliding contact with the fixed plate (7).

2. The fixture for rapid and precise positioning and clamping according to claim 1 is characterized in that: The four rotating shafts (4) are arranged in pairs, and a polygonal strip (8) is fixedly installed between each group of rotating shafts (4). Two polygonal strips (8) respectively penetrate two sleeves (9) and are in sliding contact with the two sleeves (9). The two sleeves (9) and the movable plate (201) are both provided with circular notches, and the size of the polygonal strip (8) is smaller than the size of the circular notches.

3. The fixture for rapid and precise positioning and clamping according to claim 1 is characterized in that: One end of each of the two rotating shafts (4) passes through one of the vertical plates (2) and is fixedly mounted with a sprocket (11). A chain (12) is sleeved on the outer sides of the two sprockets (11). The two sprockets (11) are connected in transmission via the chain (12).

4. The fixture for rapid and precise positioning and clamping according to claim 1 is characterized in that: One end of the other rotating shaft (4) passes through another vertical plate (2) and is fixedly mounted with a No. 1 worm wheel (13); one side of the other vertical plate (2) is fixedly mounted with two No. 1 fixing seats (14); a No. 1 worm (15) is rotatably mounted between the two No. 1 fixing seats (14); the No. 1 worm (15) is meshingly connected to the No. 1 worm wheel (13); one end of the No. 1 worm (15) passes through one of the No. 1 fixing seats (14) and is fixedly mounted with a turning handle (16).

5. The fixture for rapid and precise positioning and clamping according to claim 1 is characterized in that: A clamping structure is provided between the two vertical plates (2), the clamping structure comprising two screw rods (17), the two screw rods (17) being rotatably mounted between the two vertical plates (2), and the movable plate (201) being connected to the outer sides of the two screw rods (17) via a nut pair.

6. The fixture for rapid and precise positioning and clamping according to claim 5 is characterized in that: One end of each of the two screw rods (17) passes through another vertical plate (2) and is fixedly mounted with a first bevel gear (18); one side of the other vertical plate (2) is fixedly mounted with two second fixing seats (19); a connecting shaft (20) is rotatably mounted between the two second fixing seats (19); both ends of the connecting shaft (20) respectively pass through the two second fixing seats (19) and are fixedly mounted with a second bevel gear (21); the two first bevel gears (18) are respectively meshed and connected with the two second bevel gears (21).

7. The fixture for rapid and precise positioning and clamping according to claim 6 is characterized in that: A second worm gear (22) is fixedly mounted on the outer side of the connecting shaft (20), an L-shaped plate (23) is fixedly mounted on one side of the other vertical plate (2), a second worm gear (24) is rotatably mounted between the L-shaped plate (23) and the other vertical plate (2), the second worm gear (24) is meshingly connected to the second worm gear (22), and a knob (25) is fixedly mounted on one end of the second worm gear (24) passing through the L-shaped plate (23).

Images