Positioning clamp for machining of numerical control machine tool

Abstract

The utility model discloses a positioning fixture for machining of a numerical control machine tool, which is applied to the field of machining fixtures and comprises a box frame, a top plate is bolted to the top of the box frame, a mounting groove is integrally formed in the top of the top plate, and a buffer plate is arranged in the mounting groove. A buffer spring is bolted between the bottom of the buffer plate and the mounting groove through a spring fixing piece, a bidirectional screw is rotatably connected to the interior of the box frame, the other end of the bidirectional screw is fixedly sleeved with a motor, two threaded plates are in threaded connection with the surface of the bidirectional screw, and clamping plates are welded to the tops of the threaded plates; a guide plate is arranged on one side of the clamping plate, and a threaded rod is welded to one side of the guide plate, so that the device has the falling buffering function, can weaken the collision strength, is high in safety, can conveniently and accurately position parts, is simple and labor-saving to operate, reduces the adjustment burden of personnel, and is high in practicability.

Description

Technical Field

[0001] The utility model relates to the field of processing fixtures, in particular to a positioning fixture for machining of numerically controlled machine tools. Background Art

[0002] At present, a Chinese utility model with announcement number CN210938913U discloses a 5G smart terminal component production positioning fixture, including a base plate, the interior of the base plate is provided with positioning threaded holes, the top of the base plate is fixedly connected with two adjustment blocks, the middle of the top of the base plate is fixedly connected with a support plate, and the top of the support plate is fixedly connected with a working plate. The 5G smart terminal component production positioning fixture is placed on the working plate, and the adjustment handle is rotated to rotate the threaded screw and drive the moving block to move horizontally, while the locking threaded rod and the clamping frame at the top of the moving block can adjust and clamp the components horizontally, and when the components are clamped on the inner side of the clamping frame, the threaded pressure rod can be rotated to the pressure plate to press the components, and then different components can be clamped in multiple directions, thereby effectively solving the problem of difficulty in adjusting and clamping according to different models, sizes and areas of each component.

[0003] Although the existing positioning fixture can clamp parts of different specifications, there are still other problems in the use process, such as the lack of drop buffer. When placing parts, some personnel directly pick up the parts and drop them from the top of the fixture. For some precision parts, if the force is not buffered, it is easy to cause wear and bumps when the bottom collides with the fixture. The protection is poor, and it is not convenient to accurately position the parts. The parts cannot be accurately clamped at the center of the top. When the parts are offset from the upper processing equipment after clamping, the personnel are required to make multiple adjustments later, which increases the workload of the personnel. In order to solve the above-mentioned problems, we propose a positioning fixture for CNC machine tool machining. Utility Model Content

[0004] The utility model aims to provide a positioning fixture for machining of numerically controlled machine tools, which solves the problem that the existing positioning fixture does not have a drop buffer function and is not convenient for accurately positioning parts.

[0005] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a positioning fixture for machining of CNC machine tools, comprising a box frame, a top plate bolted on the top of the box frame, a mounting groove integrally formed on the top of the top plate, a buffer plate arranged inside the mounting groove, a buffer spring bolted between the bottom of the buffer plate and the mounting groove via a spring fixing sheet, a bidirectional screw rod rotatably connected inside the box frame, a motor fixedly sleeved on the other end of the bidirectional screw rod, two threaded plates threadedly connected on the surface of the bidirectional screw rod, a clamping plate welded on the top of the threaded plate, a guide plate arranged on one side of the clamping plate, a threaded rod welded on one side of the guide plate, a sliding groove arranged inside the clamping plate, and a nut threadedly connected on the surface of the threaded rod.

[0006] The above technical solution can provide a drop buffer function, reduce the impact force, and has high safety. At the same time, it can facilitate accurate positioning of parts, and the operation is simple and labor-saving, which reduces the adjustment burden of personnel and has high practicality.

[0007] The utility model is further configured as follows: a limiting rod is welded on the bottom of the buffer plate, and the other end of the limiting rod penetrates and extends to the bottom of the top plate.

[0008] By adopting the above technical solution, the buffer plate can be limited by setting the limiting rod to prevent the buffer plate from tilting during the process of moving up and down.

[0009] The utility model is further configured as follows: a slide rail is bolted inside the box frame, and a sliding block slidably connected to the slide rail is welded at the bottom of the threaded plate.

[0010] By adopting the above technical solution, the threaded plate can be limited by setting the slide rail and the slider to prevent the threaded plate from rotating during the left and right movement.

[0011] The utility model is further configured as follows: a protective cover is bolted to one side of the box frame.

[0012] By adopting the above technical solution and providing a protective cover, the motor can be protected to prevent the motor from being damaged by collision with foreign objects.

[0013] The utility model is further configured as follows: the buffer spring is made of carbon spring steel.

[0014] By adopting the above technical solution, the buffer spring has the characteristics of excellent mechanical properties, good anti-elasticity, low temperature resistance and corrosion resistance.

[0015] The utility model is further configured as follows: the threaded rod and the nut are both made of stainless steel.

[0016] By adopting the above technical solution, the threaded rod and the nut have the characteristics of high strength, low density and excellent corrosion resistance.

[0017] In summary, the utility model has the following beneficial effects:

[0018] 1. The utility model places the parts to be processed on the buffer plate. The weight of the parts after placement will cause the buffer plate to move downward into the installation groove. When the buffer plate moves downward, it will press down on the buffer spring through the cooperation of the limit rod to make it enter a contracted state. The deformation of the buffer spring during the contraction process will absorb the force, and it can have a falling buffer function, reduce the collision force, and has high safety.

[0019] 2. The utility model manually adjusts the distance between the two guide plates and fixes them with nuts. After the guide plates are fixed, the parts are placed in and the motor is started. After starting, the motor drives the bidirectional screw to rotate. When rotating, the bidirectional screw drives the two threaded plates to close synchronously through the cooperation of the slide rail and the slider. When the threaded plates move together, they drive the clamping plates to move together, which can facilitate the precise positioning of the parts. The operation is simple and labor-saving, reduces the adjustment burden of personnel, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0021] Figure 2 It is a front sectional view of the structure of the utility model;

[0022] Figure 3 This utility model Figure 2 A magnified view of the structure in the middle.

[0023] Figure numerals: 1. box frame; 2. top plate; 3. mounting groove; 4. buffer plate; 5. buffer spring; 6. threaded plate; 7. clamping plate; 8. guide plate; 9. threaded rod; 10. sliding groove; 11. nut; 12. limit rod; 13. slide rail; 14. slider; 15. protective cover; 16. motor; 17. bidirectional screw. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0025] Embodiment 1:

[0026] refer to Figure 1 , Figure 2 and Figure 3A positioning fixture for machining CNC machine tools comprises a box frame 1, a top plate 2 is bolted to the top of the box frame 1, a mounting groove 3 is integrally formed on the top of the top plate 2, a buffer plate 4 is arranged inside the mounting groove 3, a buffer spring 5 is bolted between the bottom of the buffer plate 4 and the mounting groove 3 through a spring fixing sheet, by placing the parts to be processed on the buffer plate 4, the weight of the parts after placement will cause the buffer plate 4 to move downward into the mounting groove 3, and when the buffer plate 4 moves downward, it will press down on the buffer spring 5 through the cooperation of the limit rod 12 to make it enter a contracted state, and the deformation of the buffer spring 5 during the contraction process will absorb the force, and can have a falling buffer function, reduce the collision force, and have high safety.

[0027] refer to Figure 3 A limiting rod 12 is welded to the bottom of the buffer plate 4, and the other end of the limiting rod 12 passes through and extends to the bottom of the top plate 2. Through the setting of the limiting rod 12, the buffer plate 4 can be limited to prevent the buffer plate 4 from tilting during the up and down movement.

[0028] refer to Figure 3 The buffer spring 5 is made of carbon spring steel and has the characteristics of excellent mechanical properties, good anti-elasticity, low temperature resistance and corrosion resistance.

[0029] Brief description of the use process: by placing the parts to be processed on the buffer plate 4, the weight of the parts after placement will cause the buffer plate 4 to move downward into the installation groove 3. When the buffer plate 4 moves downward, it will press down on the buffer spring 5 through the cooperation of the limit rod 12 to make it enter a contracted state. The deformation of the buffer spring 5 during the contraction process will absorb the force.

[0030] Embodiment 2:

[0031] refer to Figure 1 and Figure 2 The two ends of the two-way screw 17 are fixedly sleeved with a motor 16, and the surface of the two-way screw 17 is threadedly connected with two threaded plates 6. A clamping plate 7 is welded on the top of the threaded plate 6. A guide plate 8 is arranged on one side of the clamping plate 7. A threaded rod 9 is welded on one side of the guide plate 8. A sliding groove 10 is provided inside the clamping plate 7. A nut 11 is threadedly connected to the surface of the threaded rod 9. The spacing between the two guide plates 8 is manually adjusted and fixed with a nut 11. When the guide plate 8 is fixed, the parts are placed in and the motor 16 is started. After starting, the motor 16 will drive the two-way screw 17 to rotate. When the two-way screw 17 rotates, it will drive the two threaded plates 6 to close synchronously under the cooperation of the slide rail 13 and the slider 14. When the threaded plate 6 moves in closing, it will drive the clamping plate 7 to move together, which can facilitate the accurate positioning of the parts, simple and labor-saving operation, reduce the adjustment burden of personnel, and has high practicality.

[0032] refer to Figure 2 A slide rail 13 is bolted inside the box frame 1, and a slider 14 slidably connected to the slide rail 13 is welded at the bottom of the threaded plate 6. Through the setting of the slide rail 13 and the slider 14, the threaded plate 6 can be limited to prevent the threaded plate 6 from rotating during the left and right movement.

[0033] refer to Figure 1 and Figure 2 A protective cover 15 is bolted to one side of the box frame 1. The protective cover 15 can protect the motor 16 and prevent the motor 16 from being damaged by collision with foreign objects.

[0034] refer to Figure 1 and Figure 2 The threaded rod 9 and the nut 11 are both made of stainless steel, and the threaded rod 9 and the nut 11 have the characteristics of high strength, low density and excellent corrosion resistance.

[0035] Brief description of the usage process: manually adjust the distance between the two guide plates 8 and fix them with nuts 11. After the guide plates 8 are fixed, put the parts in and start the motor 16. After starting, the motor 16 will drive the bidirectional screw 17 to rotate. When the bidirectional screw 17 rotates, it will drive the two threaded plates 6 to close synchronously through the cooperation of the slide rail 13 and the slider 14. When the threaded plate 6 moves to close, it will drive the clamping plate 7 to move together.

[0036] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A positioning fixture for machining of CNC machine tools, comprising a box frame (1), Features: The top of the box frame (1) is bolted with a top plate (2), the top of the top plate (2) is integrally formed with a mounting groove (3), a buffer plate (4) is arranged inside the mounting groove (3), a buffer spring (5) is bolted between the bottom of the buffer plate (4) and the mounting groove (3) via a spring fixing sheet, a bidirectional screw rod (17) is rotatably connected inside the box frame (1), the other end of the bidirectional screw rod (17) is fixedly sleeved with a motor (16), the surface of the bidirectional screw rod (17) is threadedly connected with two threaded plates (6), a clamping plate (7) is welded to the top of the threaded plate (6), a guide plate (8) is arranged on one side of the clamping plate (7), a threaded rod (9) is welded on one side of the guide plate (8), a sliding groove (10) is opened inside the clamping plate (7), and a nut (11) is threadedly connected to the surface of the threaded rod (9).

2. A positioning fixture for machining CNC machine tools according to claim 1, It is characterized in that A limiting rod (12) is welded to the bottom of the buffer plate (4), and the other end of the limiting rod (12) penetrates and extends to the bottom of the top plate (2).

3. A positioning fixture for machining CNC machine tools according to claim 1, It is characterized in that A slide rail (13) is bolted inside the box frame (1), and a sliding block (14) slidably connected to the slide rail (13) is welded at the bottom of the threaded plate (6).

4. A positioning fixture for machining CNC machine tools according to claim 1, It is characterized in that A protective cover (15) is bolted to one side of the box frame (1).

5. A positioning fixture for machining CNC machine tools according to claim 1, It is characterized in that The buffer spring (5) is made of carbon spring steel.

6. A positioning fixture for machining CNC machine tools according to claim 1, It is characterized in that The threaded rod (9) and the nut (11) are both made of stainless steel.

Images