A kind of anti-deformation fixture for workpiece clamping of numerical control lathe

Abstract

The utility model relates to a numerical control lathe workpiece clamping's anti -deformation clamp, a plurality of clamps are fixedly arranged on the top surface of flange plate respectively, a plurality of openings are set up on the side surface of clamp, the liquid injection groove is set up in the clamp, and the liquid injection groove is connected with the opening through, a plurality of clamping rods are movably inserted in the opening, and the outer ring wall of one end of clamping rod is matched with the inner wall of opening and is set up resisting touch, a plurality of limit rings are fixedly arranged on the inner wall of opening, and the end of clamping rod is matched with the limit ring and is set up resisting touch, a plurality of liquid injection pipes are set up on the bottom surface of clamp, and the liquid injection pipe is connected with the liquid injection groove through, the liquid injection assembly is set up on the flange plate, and the liquid injection assembly is connected with the liquid injection pipe, through the pressure of liquid in the liquid injection groove is adjusted, and then the hydraulic pressure is used, the stress of a plurality of clamping rods is consistent, so that the workpiece is uniformly stressed, and the workpiece is prevented from deforming.

Description

Technical Field

[0001] This utility model relates to the field of CNC lathe technology, specifically to an anti-deformation fixture for clamping workpieces on a CNC lathe. Background Technology

[0002] In the existing technology, when CNC lathes clamp workpieces (especially thin-walled parts), they are prone to deformation due to excessive local stress. Traditional three-jaw chucks or mechanical fixtures are difficult to achieve uniform force distribution, while hydraulic fixtures are costly and have complex structures. Therefore, there is an urgent need for a deformation-resistant fixture for clamping CNC lathe workpieces to solve the above problems. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings and deficiencies of the existing technology by providing a simple, reasonably designed, and easy-to-use anti-deformation fixture for clamping CNC lathe workpieces, which can solve the above-mentioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a flange; the flange is a cylindrical structure and is connected to the lathe spindle; It also includes: The clamps are multiple, and the clamps are fixed at equal angles on the top surface of the flange. Several openings are provided on one side of the clamps, and the liquid injection groove is provided inside the clamps and is connected to the openings. The clamping rods are of several kinds, and the clamping rods are respectively movably inserted into the opening, and the outer ring wall of one end of the clamping rod is engaged with the inner wall of the opening. The limiting rings are multiple in number, and the multiple limiting rings are respectively fixedly installed on the inner wall of the opening, and the end of the clamping rod is engaged with the limiting rings to abut against each other; The injection pipes are multiple, and the multiple injection pipes are set on the bottom surface of the clamp plate and are connected to the injection tank. The liquid injection assembly is mounted on a flange and is connected to the liquid injection pipe.

[0005] Furthermore, the injection assembly includes: A liquid storage ring is fixedly sleeved on the outer wall of the flange. A liquid storage tank is opened inside the liquid storage ring, and a pressure groove is opened on one side of the liquid storage ring. The pressure groove and the liquid storage tank are connected through each other. The connecting pipe consists of several pipes, with the bottom ends of the pipes being set at equal angles on the top surface of the liquid storage ring. The bottom ends of the connecting pipes are fitted and abut against the liquid storage tank, and the top ends of the connecting pipes are connected to the corresponding injection pipes. An electric actuator is fixedly mounted on the outer wall of the flange and located below the liquid storage ring. The output end of the electric actuator is provided with a push ring, which is movably mounted in the pressure groove. The ring wall of the push ring is engaged with the inner wall of the pressure groove. The electric actuator is connected to an external power source.

[0006] Furthermore, a hydraulic detector is provided on the ring wall of the liquid storage ring, and the sensing end of the hydraulic detector is located inside the liquid storage tank.

[0007] Furthermore, each clamping rod consists of a rod one and a rod two. The end of rod one is provided with a limiting block, and rod two is movably inserted into the limiting block. The connecting ring is screwed to the end of rod one using a bearing, and the connecting ring is threaded onto the ring wall of rod two.

[0008] Furthermore, each of the clamping plates is fixed with a limiting clip at its end, and the vertical rod of the limiting clip is engaged with the annular wall of the clamping rod.

[0009] Furthermore, each of the ends of several clamping rods is fixed with a retaining ring, and the contact rubber block is bolted to the retaining ring.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the anti-deformation fixture for clamping CNC lathe workpieces described in this utility model, through the action of hydraulic pressure, makes several clamping rods evenly stressed, thereby making the workpiece evenly stressed and avoiding workpiece deformation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the internal structure of the clamping plate in this utility model.

[0013] Figure 3 This is a schematic diagram of the clamping rod in this utility model.

[0014] Figure 4 This is a schematic diagram of the liquid injection component in this utility model.

[0015] Explanation of reference numerals in the attached figures: 1. Flange; 2. Clamping plate; 3. Opening; 4. Injection tank; 5. Clamping rod; 6. Limiting ring; 7. Injection pipe; 8. Injection assembly; 9. Storage ring; 10. Pressure tank; 11. Connecting pipe; 12. Electric push rod; 13. Push ring; 14. Hydraulic detector; 15. Rod 1; 16. Rod 2; 17. Limiting block; 18. Connecting ring; 19. Limiting clip; 20. Snap ring; 21. Contact rubber block; 22. Storage tank. Detailed Implementation

[0016] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. like Figures 1-4 As shown, this specific embodiment adopts the following technical solution: it includes a flange 1; the flange 1 is a cylindrical structure and is connected to the lathe spindle; It also includes: Clamping plate 2, there are several clamping plates 2, and the clamping plates 2 are fixedly installed on the top surface of the flange 1 at equal angles. Several openings 3 are opened on one side of the clamping plate 2. The liquid injection groove 4 is opened in the clamping plate 2 and the liquid injection groove 4 is connected to the openings 3. The clamping plate 2 plays a positioning role, and the liquid in the clamping plate 2 flows in the liquid injection groove 4 and the openings 3. Clamping rods 5, of which there are several, are movably inserted into the opening 3, with the outer ring wall of one end of each clamping rod 5 engaging with the inner wall of the opening 3. Hydraulic pressure ensures that the clamping rods 5 are evenly stressed. Each clamping rod 5 consists of a first rod 15 and a second rod 16. A limiting block 17 is provided at the end of the first rod 15, and the second rod 16 is movably inserted into the limiting block 17. A connecting ring 18 is screwed onto the end of the first rod 15 using a bearing, and the connecting ring 18 is threaded onto the second rod 16. On the ring wall, rod 15 and rod 26 are connected by connecting ring 18 to facilitate the replacement of damaged rod 26. Limiting clips 19 are fixed to the ends of several clamping plates 2. The vertical rod of the limiting clip 19 is set to abut against the ring wall of the clamping rod 5. The limiting clip 19 restricts the position of the clamping rod 5 to prevent the clamping rod 5 from bending. Clamping rings 20 are fixed to the ends of several clamping rods 5. The abutting rubber block 21 is bolted to the clamping ring 20 to protect the workpiece to a certain extent and prevent the workpiece from deforming. The limiting ring 6 is a plurality of limiting rings 6, which are respectively fixedly installed on the inner wall of the opening 3, and the end of the clamping rod 5 is engaged with the limiting ring 6 to abut against it. The limiting ring 6 restricts the position of the clamping rod 5 and confines the clamping rod 5 within the opening 3. The liquid injection pipe 7, there are several liquid injection pipes 7, which are arranged on the bottom surface of the clamp plate 2 and are connected to the liquid injection tank 4 through the liquid injection pipe 7, so as to facilitate the injection of liquid into the liquid storage tank 22 through the liquid injection pipe 7; Injection assembly 8, which is mounted on flange 1 and connected to injection pipe 7, includes: A liquid storage ring 9 is fixedly sleeved on the outer wall of the flange 1. A liquid storage tank 22 is opened inside the liquid storage ring 9. A pressure groove 10 is opened on one side of the liquid storage ring 9. The pressure groove 10 is connected to the liquid storage tank 22. Liquid flows in the pressure groove 10 and the liquid storage tank 22. A hydraulic detector 14 is provided on the ring wall of the liquid storage ring 9. The sensing end of the hydraulic detector 14 is set in the liquid storage tank 22 to facilitate the measurement of the hydraulic pressure in the liquid storage ring 9 and avoid deformation of the workpiece under stress. Connecting pipe 11, there are several connecting pipes 11, the bottom ends of the several connecting pipes 11 are respectively set at equal angles on the top surface of the liquid storage ring 9, and the bottom ends of the connecting pipes 11 are set to abut against the liquid storage tank 22. The top ends of the connecting pipes 11 are connected to the corresponding liquid injection pipes 7. The connecting pipes 11 are used to facilitate the injection of liquid in the liquid storage ring 9 into several liquid storage tanks 22 respectively. An electric actuator 12 is fixedly mounted on the outer wall of the flange 1 and located below the liquid storage ring 9. The output end of the electric actuator 12 is provided with a push ring 13, which is movably mounted in the pressure groove 10. The ring wall of the push ring 13 is engaged with the inner wall of the pressure groove 10. The electric actuator 12 is connected to an external power source. The position of the push ring 13 in the pressure groove 10 is controlled by the electric actuator 12, thereby controlling the liquid in the liquid storage ring 9 and the clamping plate 2. When using this utility model, the operator first places the workpiece on the flange 1, and then starts the electric push rod 12. The electric push rod 12 drives the push ring 13 to move in the pressure groove 10. The push ring 13 pushes the liquid in the pressure groove 10 and the liquid storage tank 22 to flow, so that the liquid enters the liquid injection tank 4 from the injection pipe 7 through the connecting pipe 11. Using the hydraulic action, the force on several clamping rods 5 is made consistent. The liquid drives the clamping rods 5 to move in the opening 3 until the rubber block 21 contacts the workpiece. Then, according to the reading on the hydraulic detector 14, the hydraulic pressure is determined, and the workpiece is fixed on the flange 1 by the clamping rods 5. Compared with the prior art, the beneficial effects of this utility model are: 1. By adjusting the pressure of the liquid in the injection tank 4, and then using the hydraulic force, the force on several clamping rods 5 is consistent, so that the workpiece is subjected to uniform force and the workpiece is prevented from deforming. 2. Set up the liquid injection assembly 8. Through the cooperation of the electric push rod 12 and the push ring 13, adjust the hydraulic pressure in the liquid storage tank 22, and then inject the liquid into the corresponding liquid injection tank 4 through the connecting pipe 11 to ensure that the hydraulic pressure in several liquid injection tanks 4 is consistent. 3. A hydraulic detector 14 is set up to detect the hydraulic pressure in the reservoir 22, thereby detecting the force on the clamping rod 5 and adjusting the stress between the clamping rod 5 and the workpiece. 4. Set a limit card 19 to limit the position of the clamping rod 5 and prevent the clamping rod 5 from bending under force.

[0017] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A deformation-resistant clamping fixture for workpiece clamping on a CNC lathe, comprising a flange (1); the flange (1) is a cylindrical structure and is connected to the lathe spindle; It also includes: The clamp (2) consists of several clamps, which are fixed at equal angles on the top surface of the flange (1). Several openings (3) are provided on one side of the clamp (2). The liquid injection groove (4) is provided in the clamp (2) and is connected to the opening (3). Clamping rod (5), there are several clamping rods (5), and the several clamping rods (5) are respectively movably inserted into the opening (3), and the outer ring wall of one end of the clamping rod (5) is engaged with the inner wall of the opening (3); The limiting ring (6) is a plurality of such limiting rings (6), which are respectively fixedly installed on the inner wall of the opening (3), and the end of the clamping rod (5) is engaged with the limiting ring (6) in abutment. Injection tube (7), there are several injection tubes (7), several injection tubes (7) are set on the bottom surface of the clamp (2), and the injection tubes (7) are connected to the injection tank (4); The liquid injection assembly (8) is mounted on the flange (1) and is connected to the liquid injection pipe (7).

2. The anti-deformation fixture for clamping workpieces on a CNC lathe according to claim 1, characterized in that: The injection assembly (8) comprises: A liquid storage ring (9) is fixedly sleeved on the outer wall of the flange (1). A liquid storage tank (22) is opened inside the liquid storage ring (9). A pressure groove (10) is opened on one side of the liquid storage ring (9). The pressure groove (10) is connected to the liquid storage tank (22). Connecting pipe (11), there are several connecting pipes (11), the bottom ends of several connecting pipes (11) are respectively set at equal angles on the top surface of the liquid storage ring (9), and the bottom end of the connecting pipe (11) is set to abut against the liquid storage tank (22), and the top end of the connecting pipe (11) is connected to the corresponding liquid injection pipe (7). An electric push rod (12) is fixedly mounted on the outer wall of the flange (1) and located below the liquid storage ring (9). The output end of the electric push rod (12) is provided with a push ring (13), which is movably mounted in the pressure groove (10). The ring wall of the push ring (13) is in contact with the inner wall of the pressure groove (10). The electric push rod (12) is connected to an external power source.

3. The anti-deformation fixture for clamping workpieces on a CNC lathe according to claim 2, characterized in that: The storage ring (9) is provided with a hydraulic detector (14) on its ring wall, and the sensing end of the hydraulic detector (14) is located in the storage tank (22).

4. The anti-deformation fixture for clamping workpieces on a CNC lathe according to claim 1, characterized in that: Several clamping rods (5) are composed of rod one (15) and rod two (16). The end of rod one (15) is provided with a limiting block (17). Rod two (16) is movably inserted into the limiting block (17). The connecting ring (18) is screwed to the end of rod one (15) using a bearing. The connecting ring (18) is threaded onto the ring wall of rod two (16).

5. The anti-deformation fixture for clamping workpieces on a CNC lathe according to claim 1, characterized in that: Each end of several clamping plates (2) is fixed with a limiting card (19), and the vertical rod of the limiting card (19) is engaged with the annular wall of the clamping rod (5).

6. The anti-deformation fixture for clamping workpieces on a CNC lathe according to claim 1, characterized in that: Several clamping rods (5) are respectively fixed with retaining rings (20) at their ends, and the contact rubber block (21) is set on the retaining rings (20) by bolts.

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