CN211249260U

CN211249260U - CNC processing vacuum chuck anchor clamps

Info

Publication number: CN211249260U
Application number: CN201922264613.7U
Authority: CN
Inventors: 李宁; 尚亚军
Original assignee: Jiangsu Jiangzhun Numerical Control Machine Tool Co ltd
Current assignee: Jiangsu Jiangzhun Numerical Control Machine Tool Co ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-08-14
Anticipated expiration: 2029-12-16

Abstract

The utility model relates to a CNC processing vacuum chuck anchor clamps, including the anchor clamps main part, the fixed of evenly densely covered a plurality of first through-holes the supporting seat of anchor clamps main part, sealed the seal baffle of first through-hole, locate seal piston in the first through-hole and establish seal piston go up and to seal piston provides the spring component of power, seal piston seal baffle and the lateral wall of first through-hole forms first sealed chamber, first sealed chamber with to first sealed chamber provides compressed air or releases gaseous air valve and links to each other. This kind of vacuum unit of independent setting avoids because certain local damage of product leads to the vacuum inefficacy, lets the product process under best fixed state to guarantee product processing quality, need not provide negative pressure gas, regardless of the size of product, as long as in its reasonable within range, when need not adjust the vacuum adsorption scope, all have excellent fixed effect.

Description

CNC processing vacuum chuck anchor clamps

Technical Field

The utility model relates to a numerical control equipment processing technology field especially relates to a CNC processing vacuum chuck anchor clamps.

Background

CNC numerical control processing has the advantage that machining precision is high, processingquality is stable, contains many flat-plate-shaped technology work pieces in the CNC course of working, adds on the processing platform that needs to be fixed into, avoids the work piece position to remove in the course of working to lead to the machined product unqualified. In order to take down a machined workpiece conveniently, products on a machined platform are required to be loosened in time so as to take materials conveniently, a special automatic clamp or a vacuum chuck is generally adopted to fix the workpiece on the machining platform during machining in the prior art, and the special automatic clamp or the vacuum chuck can be loosened automatically after machining.

The special automatic clamp is convenient to control, but needs to occupy operation space when positioning, cutter collision is easily caused, so that a clamping tool of the vacuum chuck is widely concerned, but some process workpieces have through holes, the positions are not uniform, and troubles are caused for product clamping and subsequent processing, so that the vacuum chuck clamp with reasonable design is needed, different process workpieces can be clamped, and particularly, the workpieces with the through holes are provided.

Disclosure of Invention

An object of the utility model is to solve the problem of fixing unstability when vacuum adsorption anchor clamps installation has the work piece of through-hole, provide a CNC processing vacuum chuck anchor clamps.

For realizing above-mentioned purpose, the application provides a CNC processing vacuum chuck anchor clamps, including the anchor clamps main part of even densely covered a plurality of first through-holes, fixed the supporting seat of anchor clamps main part, seal the seal flap of first through-hole, locate seal piston in the first through-hole and establish on the seal piston and to seal piston provides the spring of power, seal piston seal flap and the lateral wall of first through-hole forms first seal chamber, first seal chamber with to first seal chamber provides compressed air or releases gaseous air valve and links to each other.

As the further improvement of this application, the bottom of sealed piston stretch out with sealed piston integrated into one piece's pole portion be equipped with on the sealing baffle with pole portion complex second through-hole, pole portion passes the second through-hole is in relative motion from top to bottom in the second through-hole pole portion stretches out the cover is equipped with on the position of second through-hole to sealed piston provides the spring of power the tip of pole portion is equipped with fixedly the fixed stop of spring.

As a further improvement of the application, a first boss convenient for air inlet is arranged between the sealing piston and the rod part.

As a further improvement of the present application, the fixed baffle is integrally formed with the rod portion.

As a further improvement of the present application, the fixing baffle is fixed to the end of the rod portion by a fixing nut.

As a further improvement of the present application, a first sealing gasket for sealing the first through hole is provided on the sealing piston; and a first groove matched with the first sealing washer is arranged on the sealing piston.

As a further improvement of the present application, a second sealing gasket for sealing the second through hole is provided on the stem portion; and a second groove matched with the second sealing washer is arranged on the rod part.

As a further improvement of the application, a reference block for quickly positioning and installing the workpiece is arranged on the clamp main body.

The beneficial effects of this application lie in, have designed a CNC processing vacuum chuck anchor clamps, and the device's characteristics lie in setting up mutually independent vacuum unit, and this independent vacuum unit is by the anchor clamps main part of even densely covered a plurality of first through-holes, fixed the supporting seat of anchor clamps main part, sealed the seal flap of first through-hole, locating seal piston in the first through-hole and establishing on the seal piston and to the seal piston provides the spring constitution of power, seal piston seal flap and the lateral wall of first through-hole forms first sealed chamber, first sealed chamber with to first sealed chamber provides compressed air or releases gaseous air valve and links to each other, and every piston all independently produces vacuum negative pressure, provides power by compressed air. This kind of vacuum unit of independent setting avoids because certain local damage of product leads to the vacuum inefficacy, lets the product process under best fixed state to guarantee product processing quality, need not provide negative pressure gas, regardless of the size of product, as long as in its reasonable within range, when need not adjust the vacuum adsorption scope, all have excellent fixed effect.

Drawings

FIG. 1 is a perspective view of a CNC machining vacuum chuck fixture;

FIG. 2 is a cross-sectional view of the CNC machining vacuum chuck fixture with no workpiece installed;

FIG. 3 is a cross-sectional view of a CNC machining vacuum chuck fixture with a workpiece installed;

FIG. 4 is a view of the initial state of the sealing piston when the CNC machining vacuum chuck clamp is not installed with a workpiece;

FIG. 5 is a diagram of a sealing piston state configuration when a CNC machining vacuum chuck fixture mounts a workpiece;

in the figure: 1. a clamp body; 2. a supporting seat; 3. a first through hole; 4. sealing the baffle; 5. a sealing piston; 6. a first sealed chamber; 7. a first boss; 8. a second sealed chamber; 9. a rod portion; 10. a second through hole; 11. a spring; 12. fixing a baffle plate; 13. fixing a nut; 14. a first sealing gasket; 15. a second sealing gasket; 16. a reference block; 17. an air valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In order to solve the problem that the vacuum adsorption fixture is unstable when fixing a workpiece with a through hole, the CNC machining vacuum chuck fixture comprises a fixture main body 1 with a plurality of first through holes 3 uniformly and densely distributed, and is fixed, the support seat 2 of the fixture main body 1 is sealed, the sealing baffle 4 of the first through holes 3 is arranged on the sealing piston 5 in the first through holes 3 and is arranged on the sealing piston 5, the sealing piston 5 provides a spring 11 with power for the sealing piston 5, the sealing baffle 4 and the side wall of the first through holes 3 form a first sealing cavity 6, and the first sealing cavity 6 is connected with an air valve 17 which provides compressed air or releases gas for the first sealing cavity 6. As the preferred embodiment of this application, sealed piston 5's bottom stretch out with sealed piston 5 integrated into one piece's pole portion 9 be equipped with on the seal baffle 4 with pole portion 9 complex second through-hole 10, pole portion 9 passes second through-hole 10 and relative motion about in the second through-hole 10 pole portion 9 stretches out the cover is equipped with on the position of second through-hole 10 to sealed piston 5 provides the spring 11 of power the tip of pole portion 9 is equipped with fixedly spring 11's fixed stop 12.

In the present application, the clamp body 1 is fixed to the support base 2 by a first nut; the sealing baffle 4 is fixed on the clamp body 1 through a second nut; in a preferred embodiment, the first through hole 3 is circular in shape, so as to facilitate sealing and sliding up and down; the air valve 17 is provided with a passage for connecting an air compressing device for supplying compressed air to the first sealed chamber 6 and atmospheric pressure, and a passage for releasing the compressed air in the first sealed chamber 6. In a preferred embodiment of the present application, a first boss 7 for facilitating air intake is disposed at an end portion of the sealing piston 5 close to the first sealing chamber 6, and when the sealing piston 5 is tightly attached to the sealing baffle 4 by the first boss 7, a space still remains in the first sealing chamber 6, so that a compression device can provide power to the sealing piston 5 by compressing air in the first sealing chamber 6 through an air valve 17.

In this application, the working process of the vacuum chuck clamp is as follows: firstly, before fixing a workpiece, an air compression device introduces compressed air into the first sealing cavity 6 through an air valve 17 to push the sealing piston 5 to move upwards in the first through hole 3 to reach an initial state, namely, the sealing piston is positioned at the top position of the first through hole 3, and at the moment, the spring 11 is in a compressed state; secondly, placing a workpiece on the clamp body 1, wherein the lower surface of the workpiece is tightly attached to the upper surface of the clamp body 1, and the lower surface of the workpiece covers the top opening of the first through hole 3, so that the gap between the sealing piston 5 and the lower surface of the workpiece is minimized; thirdly, closing the air compression device, opening a device communicated with the atmospheric pressure, releasing the compressed air in the first sealing cavity 6 to the atmospheric environment, automatically restoring the spring 11 in the compressed state under the action of elastic restoring force, driving the sealing piston 5 to move downwards until the bottom of the sealing piston 5 is tightly attached to the sealing baffle 4, at the moment, forming a second sealing cavity 8 in a vacuum state among the sealing piston 5, the lower surface of the workpiece and the side wall of the first through hole 3, wherein the pressure in the second sealing cavity 8 is smaller than the pressure of the atmospheric pressure, and finally fixing the workpiece on the clamp body 1 under the action of the atmospheric pressure; and finally, after the workpiece is machined, starting the air compression device, filling compressed air into the first sealing cavity 6 to move the sealing piston 5 upwards, and taking down the workpiece when the sealing piston 5 is restored to the initial state.

In the present application, as a preferred embodiment of the present application, the fixing baffle 12 may be integrally formed with the rod portion 9; the fixing baffle 12 may be fixed to the end of the stem 9 by a fixing nut 13; a first sealing washer 14 for sealing the first through hole 3 is arranged on the sealing piston 5, a first groove matched with the first sealing washer 14 is arranged on the sealing piston 5, and the number of the first sealing washers 14 is at least 1; a second sealing washer 15 for sealing the second through hole 10 is arranged on the rod part 9, and a second groove for matching with the second sealing washer 15 is arranged on the rod part 9; a reference block 16 is arranged on the clamp body 1, and the reference block 16 is used for quickly positioning and installing a workpiece.

In conclusion, the application designs a CNC processing vacuum chuck anchor clamps, and the device's characteristics lie in setting up mutually independent vacuum unit, and this independent vacuum unit is by the anchor clamps main part 1 of even densely covered a plurality of first through-holes 3, fixed the supporting seat 2 of anchor clamps main part 1, seal the seal baffle 4 of first through-hole 3, locate seal piston 5 in the first through-hole 3 and establish on seal piston 5 and to seal piston 5 provides the spring 11 of power and constitute, seal piston 5 seal baffle 4 and the lateral wall of first through-hole 3 forms first sealed chamber 6, first sealed chamber 6 with to first sealed chamber 6 provides compressed air or the air valve 17 that releases gas links to each other, and every piston all independently produces vacuum negative pressure, provides power by compressed air. The independently arranged vacuum unit avoids vacuum failure caused by certain local damage of the product, and the product is processed in the best fixed state to ensure the processing quality of the product. And no negative pressure gas is required to be provided; the product has excellent fixing effect in a reasonable range regardless of the size and without adjusting the vacuum adsorption range.

The present application has been described in connection with only the presently preferred embodiments with the understanding that the present disclosure is not to be considered as limiting, and the present application is not limited to the examples described above, but rather, it is to be understood that changes, modifications, additions or substitutions that are within the spirit and scope of the application by one of ordinary skill in the art are included.

Claims

1. The utility model provides a CNC processing vacuum chuck anchor clamps, its characterized in that, including anchor clamps main part (1), the fixed of evenly densely covered a plurality of first through-holes (3) supporting seat (2), the sealing of anchor clamps main part (1) the seal baffle (4) of first through-hole (3), locate seal piston (5) in first through-hole (3) and establish seal piston (5) are gone up and to seal piston (5) provide spring (11) of power, seal piston (5) seal baffle (4) and the lateral wall of first through-hole (3) forms first sealed chamber (6), first sealed chamber (6) with to air valve (17) that first sealed chamber (6) provided compressed air or released gas link to each other.

2. The CNC machining vacuum chuck clamp according to claim 1, characterized in that the bottom of the sealing piston (5) protrudes a rod portion (9) integrally formed with the sealing piston (5), a second through hole (10) engaged with the rod portion (9) is provided on the sealing baffle (4), the rod portion (9) passes through the second through hole (10) and moves up and down relatively in the second through hole (10), a spring (11) providing power to the sealing piston (5) is sleeved on a portion of the rod portion (9) protruding the second through hole (10), and a fixing baffle (12) fixing the spring (11) is provided on an end portion of the rod portion (9).

3. CNC machining vacuum chuck clamp according to claim 2, characterized in that between the sealing piston (5) and the stem (9) there is further provided a first boss (7) facilitating air intake.

4. The CNC machining vacuum chuck clamp according to claim 2, characterized in that the fixing fence (12) is integrally formed with the rod part (9).

5. The CNC machining vacuum chuck clamp according to claim 2, characterized in that the fixing fence (12) is fixed to the end of the rod part (9) by a fixing nut (13).

6. The CNC machining vacuum chuck clamp according to claim 1, characterized in that a first sealing washer (14) for sealing the first through hole (3) is provided on the sealing piston (5); and a first groove matched with the first sealing washer (14) is arranged on the sealing piston (5).

7. The CNC machining vacuum chuck clamp according to claim 2, characterized in that a second sealing washer (15) for sealing the second through hole (10) is provided on the shaft portion (9); and a second groove matched with the second sealing washer (15) is arranged on the rod part (9).

8. CNC machining vacuum chuck clamp according to claim 1, characterized in that there is a reference block (16) on the clamp body (1) for fast positioning and mounting of the workpiece.