Air dryer valve body milling clamp

Abstract

The utility model discloses an air dryer valve body milling clamp which comprises a clamp body, the clamp body comprises a bottom plate and a stand column, the stand column is vertically arranged in the middle of the bottom plate, four clamping sets surrounding the stand column are arranged on the clamp body, and each clamping set comprises two vertically-arranged clamping stations. Each clamping set comprises a first supporting seat arranged on the upper portion of the stand column and a second supporting seat arranged in the middle of the stand column, a first positioning seat right opposite to the second supporting seat is arranged on the bottom plate, a first pressing assembly right opposite to the first positioning seat is arranged at the lower end of the second supporting seat, and a second positioning seat is arranged at the upper end of the second supporting seat. A second pressing assembly right opposite to the second positioning seat is arranged at the lower end of the first supporting seat. The clamp has the advantages that the clamp can clamp a plurality of workpieces at the same time, milling machining of a plurality of faces of the workpieces is achieved through different positioning structures and pressing structures, the clamp cost is reduced, the number of times of workpiece replacement is reduced, and the machining efficiency is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the field of fixtures, in particular to a valve body milling fixture for an air dryer. Background Art

[0002] The air dryer valve body is arranged at the lower end of the air dryer, and is used to provide clean, dry, and air pressure-protected compressed air for air brake vehicles. The air dryer valve body has holes in multiple directions for connecting different pipes. The air dryer valve body is made by die-casting, and then the end faces of each connection end are milled by machining. The milling fixture in the prior art can only clamp one product at a time. After processing one surface, another fixture is replaced to position and process another surface. Therefore, multiple fixtures need to be designed for the same product. The fixture cost is high, and the frequent replacement of parts seriously affects the production rhythm. Summary of the invention

[0003] In view of the deficiencies in the above-mentioned prior art, the utility model provides an air dryer valve body milling fixture, which has multiple clamping stations, can position multiple workpieces at the same time, and realizes milling processing of multiple surfaces of the air dryer valve body on the same set of fixtures.

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

[0005] A milling fixture for an air dryer valve body, characterized in that it includes a clamping body, the clamping body includes a base plate and a column, the column is uprightly arranged in the middle of the base plate, the clamping body has four clamping groups surrounding the column, each clamping group includes two vertically arranged clamping stations, each clamping group includes a first support seat arranged on the upper part of the column and a second support seat arranged in the middle part of the column, wherein the first support seat and the second support seat are arranged vertically opposite to each other, a first positioning seat opposite to the second support seat is arranged on the base plate, a first clamping assembly opposite to the first positioning seat is arranged at the lower end of the second support seat, a second positioning seat is arranged at the upper end of the second support seat, and a second clamping assembly opposite to the second positioning seat is arranged at the lower end of the first support seat.

[0006] Furthermore, an initial positioning block is arranged in the middle of the bottom of the base plate, and an initial positioning pin is arranged on the base plate on one side of the initial positioning block.

[0007] Furthermore, the first positioning seat and the second positioning seat have the same positioning part structure, the top surface of the first positioning seat has a central positioning hole, and a diamond pin is arranged on one side of the central positioning hole.

[0008] Furthermore, the first clamping assembly has the same structure as the second clamping assembly, and the first clamping assembly includes an ejection cylinder arranged on the second support seat, the front end of the piston rod of the ejection cylinder is connected to a connecting head, and a floating pressure head is connected to the connecting head. The floating pressure head is locked to the connecting head by a step bolt, and the contact surface between the floating pressure head and the connecting head is a spherical surface.

[0009] Furthermore, an elastic positioning pin is provided on the first positioning seat.

[0010] Furthermore, a top plate is provided on the top of the column, a rotating oil separator is provided on the top plate, and a connecting plate is connected to the upper end of the rotating oil separator.

[0011] The beneficial effects of the utility model include: the fixture can clamp multiple workpieces at the same time, and realize milling processing of multiple surfaces of the workpiece through different positioning structures and clamping structures, thereby reducing the fixture cost, reducing the number of parts replacements, and significantly improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 yes Figure 1 Left view of

[0014] Figure 3 yes Figure 1 Top view of the . DETAILED DESCRIPTION

[0015] The present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

[0016] A kind of Figure 1-2 The air dryer valve body milling fixture shown includes a clamping body, which includes a base plate 1 and a column 2. The column 2 is vertically arranged on the central axis of the base plate 1. The clamping body has four clamping groups around the column 2. Each clamping group includes two clamping stations arranged vertically. The upper and lower clamping stations clamp two workpieces at the same time and maintain the same clamping direction. Each clamping group includes a first support seat 3 arranged on the upper part of the column 2 and a second support seat 4 arranged in the middle part of the column 2, wherein the first support seat 3 and the second support seat 4 are arranged vertically opposite to each other. A first positioning seat 5 opposite to the second support seat 4 is arranged on the base plate 1, a first clamping assembly opposite to the first positioning seat 5 is arranged at the lower end of the second support seat 4, a second positioning seat 6 is arranged at the upper end of the second support seat 4, and a second clamping assembly opposite to the second positioning seat 6 is arranged at the lower end of the first support seat 3.

[0017] The bottom middle of the bottom plate 1 of the clamp body is provided with an initial positioning block 8, and the bottom plate 1 on one side of the initial positioning block 8 is provided with an initial positioning pin 9. The clamp body is positioned by the initial positioning block 8 and the initial positioning pin 9.

[0018] The four clamping groups are used to position the four surfaces of the dryer valve body. The first positioning seat 5 and the second positioning seat 6 have the same positioning part structure. The top surface of the first positioning seat 5 of the first clamping group has a central positioning hole, and a diamond pin is arranged on one side of the central positioning hole. The first positioning seat 5 is positioned by two pins on one side to achieve complete positioning of the workpiece.

[0019] In the first clamping group, the first clamping assembly has the same structure as the second clamping assembly. The first clamping assembly includes an ejection oil cylinder 10 disposed on the second support seat 4, and the front end of the piston rod of the ejection oil cylinder 10 is connected to a connector 11. The connector 11 is connected to a floating pressure head 12, which is locked to the connector 11 by a step bolt, and the contact surface between the floating pressure head 12 and the connector 11 is a spherical surface. The floating pressure head 12 has a plurality of pressure rods, which are respectively used to clamp a plurality of positions on the upper surface of the workpiece, and the structure of the floating pressure head 12 can adapt to the dimensional error of the workpiece surface.

[0020] The first positioning seat 5 in the second clamping group is provided with an elastic positioning pin 13. The first positioning seat 5 is also provided with a diamond-shaped positioning pin and an end positioning portion, so as to achieve comprehensive positioning of the workpiece.

[0021] In order to realize the replacement processing after multiple rotations, in this embodiment, a top plate 14 is provided on the top of the column 2, and a rotating oil separator 15 is provided on the top plate 14, and the rotating oil separator 15 is used to supply oil to the ejection cylinder 10. The upper end of the rotating oil separator 15 is connected to a connecting plate 16, and the connecting plate 16 is used to connect the main shaft of the machine tool.

[0022] 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. An air dryer valve body milling fixture, characterized in that: The invention comprises a clamping body, wherein the clamping body comprises a base plate (1) and a column (2), wherein the column (2) is vertically arranged in the middle of the base plate (1), and the clamping body has four clamping groups surrounding the column (2), each clamping group comprises two clamping stations arranged vertically, and each clamping group comprises a first support seat (3) arranged at the upper part of the column (2) and a second support seat (4) arranged in the middle part of the column (2), wherein the first support seat (3) and the second support seat (4) are arranged vertically opposite to each other, and a first positioning seat (5) opposite to the second support seat (4) is arranged on the base plate (1), and a first clamping assembly opposite to the first positioning seat (5) is arranged at the lower end of the second support seat (4), and a second positioning seat (6) is arranged at the upper end of the second support seat (4), and a second clamping assembly opposite to the second positioning seat (6) is arranged at the lower end of the first support seat (3).

2. The air dryer valve body milling fixture according to claim 1, characterized in that: An initial positioning block (8) is arranged in the middle of the bottom of the base plate (1), and an initial positioning pin (9) is arranged on the base plate (1) on one side of the initial positioning block (8).

3. The air dryer valve body milling fixture according to claim 1, characterized in that: The first positioning seat (5) and the second positioning seat (6) have the same positioning part structure; the top surface of the first positioning seat (5) has a central positioning hole, and a diamond pin is arranged on one side of the central positioning hole.

4. The air dryer valve body milling fixture according to claim 3, characterized in that: The first clamping assembly has the same structure as the second clamping assembly. The first clamping assembly comprises an ejection cylinder (10) arranged on the second support seat (4). The front end of the piston rod of the ejection cylinder (10) is connected to a connecting head (11). The connecting head (11) is connected to a floating pressure head (12). The floating pressure head (12) is locked to the connecting head (11) by a step bolt. The contact surface between the floating pressure head (12) and the connecting head (11) is a spherical surface.

5. The air dryer valve body milling fixture according to claim 1, characterized in that: The first positioning seat (5) is provided with an elastic positioning pin (13).

6. The air dryer valve body milling fixture according to claim 1, characterized in that: A top plate (14) is arranged on the top of the column (2), a rotating oil separator (15) is arranged on the top plate (14), and a connecting plate (16) is connected to the upper end of the rotating oil separator (15).

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