Valve cover drilling clamp

Abstract

The utility model discloses a valve cover drilling clamp which is characterized in that the valve cover drilling clamp comprises a clamp body, two parallel clamping stations are arranged at the top of the clamp body, positioning seats are arranged on the two clamping stations, the top faces of the positioning seats are planes, cylindrical pins and diamond pins are arranged on the top faces of the positioning seats, pressing plates are arranged on the left sides and the right sides of the positioning seats, and the pressing plates are arranged on the left sides and the right sides of the positioning seats. The upper ends of the pressing plates are provided with bent parts extending to the positions above the positioning seats, the lower ends of the pressing plates penetrate through a top plate of the clamp body, and air cylinders are arranged on the bottom face of the top plate of the clamp body in an inverted mode. Hinge seats are arranged on the inner walls of the two sides of the clamp body respectively, and guide grooves in sliding limiting connection with the hinge seats are formed in the middle of the pressing plate. The clamp has the advantages of being simple in structure, convenient to clamp, good in clamping stability and capable of clamping two products at the same time for machining, and the machining efficiency is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the field of clamps, in particular to a valve cover drilling clamp. Background Art

[0002] When drilling holes for products such as the pressure limiting valve cover, on the one hand, it is limited by the structure of the pressure limiting valve cover. In addition, the fixture is limited by space, which makes it inconvenient to arrange the cylinder, resulting in poor clamping and fixing effects, thus affecting the subsequent processing effects. On the other hand, the existing drilling fixture can only process a single product, and the daily production capacity of the product cannot be achieved. In summary, the existing fixture is inconvenient to clamp, has poor clamping stability, and has low processing efficiency due to frequent part changes. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a valve cover drilling fixture, which has a simple structure, is convenient for clamping, and significantly improves the processing efficiency.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A valve cover drilling fixture, characterized in that it includes a clamping body, the top of which is provided with two parallel clamping stations, and both clamping stations are provided with positioning seats, the top surface of the positioning seat is a plane, and a cylindrical pin and a diamond pin are provided on the top surface of the positioning seat, and pressure plates are provided on the left and right sides of the positioning seat, and the upper end of the pressure plate has a bending portion extending to the top of the positioning seat, and the lower end of the pressure plate passes through the top plate of the clamping body, and a cylinder is inverted on the bottom surface of the top plate of the clamping body, and the lower ends of the two pressure plates are hinged to the two ends of the same connecting rod, and the lower end of the piston rod of the cylinder is hinged to the middle part of the connecting rod through a joint, and hinge seats are respectively provided on the inner walls on both sides of the clamping body, and the middle part of the pressure plate has a guide groove connected to the hinge seat for sliding limit.

[0006] Furthermore, the clamp body is of a gantry type, and both ends of the lower part of the clamp body are provided with enlarged feet extending to both sides, and the enlarged feet are provided with a plurality of U-shaped installation grooves.

[0007] Furthermore, a positioning key is provided on the bottom surface of the clamp body, and the positioning key is screwed onto the clamp body by means of a screw.

[0008] Furthermore, the guide groove is in a broken line shape, and comprises a first vertical portion, an inclined portion, and a second vertical portion which transition smoothly in sequence, wherein the first vertical portion is located further outward than the second vertical portion.

[0009] Furthermore, a hand valve is provided on the side of the clamp body, and the hand valve is used to connect the cylinder gas pipeline.

[0010] The beneficial effects of the utility model include: simple structure, convenient clamping, good clamping stability, and the ability to clamp two products for processing at the same time, which significantly improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 yes Figure 1 Top view of the . DETAILED DESCRIPTION

[0013] The present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

[0014] A kind of Figure 1-2 The valve cover drilling fixture shown includes a clamp body 1, and two parallel clamping stations are arranged on the top of the clamp body 1 for clamping two valve covers to be processed at the same time, so as to reduce the frequency of changing parts and improve the processing efficiency. A positioning seat 4 is arranged on the two clamping stations, and the top surface of the positioning seat 4 is a plane. A cylindrical pin 5 and a diamond pin 6 are arranged on the top surface of the positioning seat 4. The valve cover to be processed is completely positioned by two pins on one side. A pressing plate 8 is arranged on both sides of the left and right sides of the positioning seat 4. The upper end of the pressing plate 8 has a bending portion extending to the top of the positioning seat 4, which is used to press the edge of the valve cover to be processed. The lower end of the pressing plate 8 passes through the top plate of the clamp body 1, and the bottom surface of the top plate of the clamp body 1 is invertedly provided with a cylinder 2 as a drive for the two pressing plates 8. The lower ends of the two pressing plates 8 are hinged to the two ends of the same connecting rod 7, the lower end of the piston rod of the cylinder 2 is hinged to the middle of the connecting rod 7 through the joint 3, hinge seats 9 are respectively provided on the inner walls of both sides of the clamp body 1, and the middle of the pressing plate 8 has a guide groove 12 that is slidably limited and connected to the hinge seat 9. The working principle of this structure is that when the piston rod of the cylinder 2 extends downward, the two pressing plates 8 simultaneously press the workpiece downward.

[0015] In order to facilitate the installation of the cylinder 2 and the fixture, the fixture body 1 of the utility model is designed as a gantry type, and the lower ends of the fixture body 1 have enlarged feet extending to both sides, and the enlarged feet have multiple U-shaped installation grooves. The bottom surface of the fixture body 1 is provided with a positioning key 10, and the positioning key 10 is screwed to the fixture body 1. The positioning key 10 facilitates the positioning of the fixture on the machine tool.

[0016] like Figure 1 As shown, the guide groove 12 is in a broken line shape, and the guide groove 12 includes a first vertical portion 121, an inclined portion 122, and a second vertical portion 123 that transition smoothly in sequence, wherein the first vertical portion 121 on the two opposite pressing plates 8 is further outward relative to the second vertical portion 123. The spacing between the two first vertical portions 123 is equal to the spacing between the hinge points at the two ends of the connecting rod 7, so that the pressing plate 8 can maintain vertical downward pressure, but the spacing between the two second vertical portions 123 is smaller, so the pressing plate 8 can be opened to both sides when moving upward, which is convenient for taking and placing parts.

[0017] Furthermore, a hand-operated valve 11 is provided on the side of the clamp body 1, and the hand-operated valve 11 is used to connect the gas pipeline of the cylinder 2. The hand-operated valve can be used to control the two cylinders 2 to synchronously achieve clamping and anti-loosening.

[0018] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A valve cover drilling fixture, characterized in that: The invention comprises a clamp body (1), wherein two parallel clamping stations are arranged on the top of the clamp body (1), and a positioning seat (4) is arranged on each of the two clamping stations. The top surface of the positioning seat (4) is a plane, and a cylindrical pin (5) and a diamond pin (6) are arranged on the top surface of the positioning seat (4). A pressing plate (8) is arranged on both sides of the left and right sides of the positioning seat (4), and the upper end of the pressing plate (8) has a bent portion extending to the top of the positioning seat (4), and the lower end of the pressing plate (8) passes through The top plate of the clamp body (1) is provided with a cylinder (2) on the bottom surface of the top plate of the clamp body (1), the lower ends of the two pressure plates (8) are hinged to the two ends of the same connecting rod (7), the lower end of the piston rod of the cylinder (2) is hinged to the middle part of the connecting rod (7) through a joint (3), hinge seats (9) are respectively provided on the inner walls on both sides of the clamp body (1), and the middle part of the pressure plate (8) has a guide groove (12) connected to the hinge seat (9) for sliding and limiting.

2. A valve cover drilling fixture according to claim 1, characterized in that: The clamp body (1) is of a gantry type, and the two ends of the lower part of the clamp body (1) are provided with enlarged feet extending to both sides, and the enlarged feet are provided with a plurality of U-shaped installation grooves.

3. The valve cover drilling fixture according to claim 1, characterized in that: The bottom surface of the clamp body (1) is provided with a positioning key (10), and the positioning key (10) is screwed onto the clamp body (1).

4. The valve cover drilling fixture according to claim 1, characterized in that: The guide groove (12) is in a broken line shape, and comprises a first vertical portion (121), an inclined portion (122), and a second vertical portion (123) which are smoothly transitioned in sequence, wherein the first vertical portion (121) is located further outward than the second vertical portion (123).

5. The valve cover drilling fixture according to claim 1, characterized in that: A hand-operated valve (11) is provided on the side of the clamp body (1), and the hand-operated valve (11) is used to connect the air pipeline of the cylinder (2).

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