Adjustable CNC jig
By setting up a sealing plate and adjusting its position in the vacuum adsorption fixture, the problem of cutting fluid entering the valve is solved, the valve and spring are protected, the service life of the equipment is extended, and the processing parts of different sizes are adapted.
Patent Information
- Application Number
- CN202421496874.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-06-27
AI Technical Summary
During the cutting process of existing vacuum adsorption fixtures, cutting fluid enters the valve core through holes, causing sticky polymers to adhere to the spring, changing the elastic coefficient of the spring or causing the spring to stick and failing.
An adjustable CNC fixture is designed. By providing a first sealing plate and a second sealing plate in the top shell of the vacuum adsorption fixture, the valve and air hole structure is used to ensure that the cutting fluid cannot enter the valve, and the position of the sealing plate is adjusted to protect the valve through the cooperation of the knob and the worm.
Effectively prevent cutting fluid from entering the valves of the vacuum adsorption fixture, protecting the valves and springs, extending the service life of the equipment, and adapting to different sizes of machining parts.
Smart Images
Figure CN222843620U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of CNC fixtures, in particular to an adjustable CNC fixture. Background Art
[0002] During the use of CNC processing equipment, various CNC jigs are used to fix the workpiece. Among them, the vacuum adsorption jig is a widely used jig in the use of CNC processing equipment. The vacuum adsorption jig generates a vacuum in the closed cavity of the jig and relies on atmospheric pressure to press the workpiece. It is used to fix the workpiece at this time. It is widely used and can effectively fix workpieces with flat surfaces.
[0003] When the existing vacuum adsorption jig is used, it is generally fixed on a processing machine tool, and the workpiece is fixed on the vacuum adsorption jig. When the cutting operation is performed, although the hole for fixing the workpiece has been closed by the valve, as the workpiece is processed, the cutting fluid will still enter the valve core through the holes on the vacuum adsorption jig. Due to the presence of viscous polymers in the cutting fluid, these viscous polymers will adhere to the spring. Over time, the spring coefficient of the spring will change, or even stick to the spring, and the spring will completely fail. Utility Model Content
[0004] The purpose of the utility model is to provide an adjustable CNC fixture to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable CNC jig, including a vacuum adsorption jig, the vacuum adsorption jig including a bottom shell and a top shell, a chamber is opened in the middle of the bottom shell, and air holes are opened equidistantly in the middle of the top shell, the air holes are connected to the interior of the chamber, valves are installed inside the air holes, first sealing plates are symmetrically and slidably installed inside the two ends of the top shell, the first sealing plate is arranged above the valve, a first through-hole is opened in the middle of the top shell for the first sealing plate to pass through, and the first sealing plate slides sealingly inside the first through-hole.
[0006] As a further preferred embodiment of the present technical solution, a second sealing plate is integrally fixedly installed on the bottom of the first sealing plate, second through-holes are symmetrically provided at both ends of the bottom shell, the second sealing plate and the second through-holes are sealingly slidably arranged, limiting holes are symmetrically provided at the ends of the second sealing plate, limiting rods are symmetrically fixedly installed at the positions of the limiting holes inside the bottom shell, and the limiting rods are slidably connected to the limiting holes.
[0007] As a further preferred embodiment of the present technical solution, a bidirectional screw is rotatably mounted in the middle of the bottom shell via a sealed bearing, and the middle of the second sealing plate is threadedly connected to the bidirectional screw.
[0008] As a further preferred embodiment of the present technical solution, a worm gear is fixedly mounted on one end of the bidirectional screw, a mounting seat is fixedly mounted on one side of the bottom shell corresponding to the worm gear, a worm is rotatably mounted on the middle part of the mounting seat, the worm is meshingly connected with the worm gear, and a knob is fixedly mounted on the bottom of the worm through the mounting seat.
[0009] As a further preferred embodiment of the technical solution, display grooves for displaying the positions between two vertical columns of air holes corresponding to the ends of the first sealing plate are equidistantly provided on the surface of the first sealing plate.
[0010] As a further preferred embodiment of the present technical solution, the second sealing plate is arranged higher than the worm gear.
[0011] The utility model provides an adjustable CNC fixture, which has the following beneficial effects:
[0012] (1) The utility model arranges the first sealing plate inside the first through-hole. After the workpiece is fixed on the top of the vacuum adsorption fixture, the workpiece will block the valve on the used air hole, and the first sealing plate will block the valve of the unused air hole. When cutting, the cutting fluid cannot pass through the air hole and enter the valve, so the valve in the vacuum adsorption fixture can be protected.
[0013] (2) The utility model rotates the knob, and the meshing of the worm and the worm wheel drives the bidirectional screw to rotate, and the threaded connection between the second sealing plate and the bidirectional screw drives the second sealing plate to move, thereby changing the moving position of the end of the first sealing plate. The first sealing plate is located between the two vertical rows of air holes, and the used air hole area is exposed. The valves of the air holes on the vacuum adsorption fixture when processing different workpieces can be operated, and the valves in the vacuum adsorption fixture can be protected. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 It is a schematic diagram of the overall explosion structure of the utility model;
[0016] Figure 3 It is a partial cross-sectional structural schematic diagram of the utility model;
[0017] Figure 4 It is a schematic diagram of a partial cross-section explosion structure of the utility model;
[0018] In the figure: 1. vacuum adsorption fixture; 2. bottom shell; 3. top shell; 4. chamber; 5. air hole; 6. valve; 7. first sealing plate; 8. knob; 9. first through hole; 10. second sealing plate; 11. second through hole; 12. limit hole; 13. limit rod; 14. bidirectional screw; 15. worm gear; 16. mounting seat; 17. worm; 18. display slot. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0020] The utility model provides a technical solution: Figures 1 to 4 As shown, in this embodiment, an adjustable CNC fixture includes a vacuum adsorption fixture 1, and the vacuum adsorption fixture 1 includes a bottom shell 2 and a top shell 3. A chamber 4 is opened in the middle of the bottom shell 2, and air holes 5 are opened equidistantly in the middle of the top shell 3. The air holes 5 are connected to the interior of the chamber 4, and valves 6 are installed inside the air holes 5. First sealing plates 7 are symmetrically slidably installed inside the two ends of the top shell 3, and the first sealing plate 7 is arranged above the valve 6. A first through hole 9 for the first sealing plate 7 to pass through is opened in the middle of the top shell 3, and the first sealing plate 7 slides sealingly inside the first through hole 9.
[0021] like Figures 1 to 4 As shown, a second sealing plate 10 is integrally fixedly installed on the bottom of the first sealing plate 7, second through-holes 11 are symmetrically provided at both ends of the bottom shell 2, the second sealing plate 10 and the second through-holes 11 are sealingly slidably arranged, and limiting holes 12 are symmetrically provided at the ends of the second sealing plate 10, and limiting rods 13 are symmetrically fixedly installed inside the bottom shell 2 at positions corresponding to the limiting holes 12, and the limiting rods 13 are slidably connected to the limiting holes 12.
[0022] When the second sealing plate 10 is moved, the second sealing plate 10 will slide along between the two limiting rods 13 , so as to limit the movement of the second sealing plate 10 .
[0023] like Figures 1 to 4 As shown, a bidirectional screw 14 is rotatably mounted on the middle portion of the bottom shell 2 via a sealed bearing, and the middle portion of the second sealing plate 10 is threadedly connected to the bidirectional screw 14 .
[0024] By rotating the bidirectional screw 14, the two second sealing plates 10 can be driven to move simultaneously, thereby changing the moving position of the end of the first sealing plate 7, and changing the area of the air hole 5 used.
[0025] like Figures 1 to 4As shown, a worm gear 15 is fixedly mounted on one end of the bidirectional screw 14, a mounting seat 16 is fixedly mounted on one side of the bottom shell 2 corresponding to the worm gear 15, a worm 17 is rotatably mounted in the middle of the mounting seat 16, the worm 17 is meshingly connected with the worm gear 15, and a knob 8 is fixedly mounted on the bottom of the worm 17 through the mounting seat 16.
[0026] By rotating the knob 8, the meshing of the worm 17 and the worm wheel 15 will drive the bidirectional screw 14 to rotate, so as to locate the position of the second sealing plate 10 and prevent the second sealing plate 10 from moving randomly.
[0027] like Figures 1 to 4 As shown, display grooves 18 for displaying the position between two longitudinal rows of air holes 5 corresponding to the end of the first sealing plate 7 are equidistantly provided on the surface of the first sealing plate 7 .
[0028] When the second sealing plate 10 is moved, the display groove 18 on the first sealing plate 7 can just display the top shell 3 , so as to determine that the end of the first sealing plate 7 corresponds to between the two longitudinal rows of air holes 5 .
[0029] like Figures 1 to 4 As shown, the second sealing plate 10 is arranged higher than the worm gear 15 .
[0030] The movement of the second sealing plate 10 is prevented from affecting the rotation of the worm wheel 15 .
[0031] The utility model provides an adjustable CNC fixture, and the specific working principle is as follows:
[0032] When the device is in use, during cutting, the first sealing plate 7 is arranged inside the first perforation 9. After the workpiece is fixed above the vacuum adsorption fixture 1, the workpiece will block the valve 6 on the used pore 5, and the first sealing plate 7 will block the valve 6 of the unused pore 5. During cutting, the cutting fluid cannot pass through the pore 5 and enter the valve 6, so the valve 6 in the vacuum adsorption fixture 1 can be protected;
[0033] When processing workpieces of different sizes, by rotating the knob 8, the meshing of the worm 17 and the worm wheel 15 will drive the bidirectional screw 14 to rotate, and the threaded connection between the second sealing plate 10 and the bidirectional screw 14 will drive the second sealing plate 10 to move, thereby changing the moving position of the end of the first sealing plate 7. The first sealing plate 7 is located between the two vertical rows of pores 5, and the area of the pores 5 used is exposed. The valve 6 of the pores 5 on the vacuum adsorption jig 1 when processing different workpieces can be operated to protect the valve 6 in the vacuum adsorption jig 1.
[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An adjustable CNC jig, comprising a vacuum adsorption jig (1), the vacuum adsorption jig (1) comprising a bottom shell (2) and a top shell (3), a chamber (4) being provided in the middle of the bottom shell (2), characterized in that: The middle of the top shell (3) is provided with air holes (5) at equal intervals, the air holes (5) are connected to the interior of the chamber (4), a valve (6) is installed inside the air holes (5), first sealing plates (7) are symmetrically slidably installed inside the two ends of the top shell (3), the first sealing plate (7) is arranged above the valve (6), the middle of the top shell (3) is provided with a first through hole (9) for the first sealing plate (7) to pass through, and the first sealing plate (7) slides in a sealing manner inside the first through hole (9).
2. The adjustable CNC fixture according to claim 1, characterized in that: A second sealing plate (10) is integrally fixedly mounted on the bottom of the first sealing plate (7); second through holes (11) are symmetrically provided at both ends of the bottom shell (2); the second sealing plate (10) and the second through holes (11) are sealingly slidably arranged; limiting holes (12) are symmetrically provided at the ends of the second sealing plate (10); limiting rods (13) are symmetrically fixedly mounted inside the bottom shell (2) at positions corresponding to the limiting holes (12); and the limiting rods (13) are slidably connected to the limiting holes (12).
3. The adjustable CNC fixture according to claim 2, characterized in that: A bidirectional screw (14) is rotatably mounted on the middle portion of the bottom shell (2) via a sealed bearing, and a middle portion of the second sealing plate (10) is threadedly connected to the bidirectional screw (14).
4. The adjustable CNC fixture according to claim 3, characterized in that: A worm wheel (15) is fixedly mounted on one end of the bidirectional screw (14); a mounting seat (16) is fixedly mounted on one side of the bottom shell (2) corresponding to the worm wheel (15); a worm (17) is rotatably mounted in the middle of the mounting seat (16); the worm (17) is meshingly connected with the worm wheel (15); and a knob (8) is fixedly mounted on the bottom of the worm (17) through the mounting seat (16).
5. The adjustable CNC fixture according to claim 2, characterized in that: The surface of the first sealing plate (7) is provided with display grooves (18) at equal intervals for displaying the position between two longitudinal rows of air holes (5) corresponding to the end of the first sealing plate (7).
6. The adjustable CNC fixture according to claim 4, characterized in that: The second sealing plate (10) is arranged higher than the worm gear (15).