CN117532373A

CN117532373A - Clamp base

Info

Publication number: CN117532373A
Application number: CN202311827141.6A
Authority: CN
Inventors: 周专; 黄岩; 伦东锋; 赵时军
Original assignee: Aecc Hunan South Astronautics Industry Co ltd
Current assignee: Aecc Hunan South Astronautics Industry Co ltd
Priority date: 2023-12-28
Filing date: 2023-12-28
Publication date: 2024-02-09

Abstract

The application provides a fixture base for press from both sides two round pin parts of tight unidimensional one side when processing, it specifically includes: the bottom plate is a thick plate in a polygonal shape; the groove is arranged on the upper surface of the bottom plate, transversely penetrates through the upper surface of the bottom plate, takes the middle of the groove as a boundary, takes one side as a first groove, takes the other side as a second groove in the groove, and sequentially arranges first threaded holes at the bottom of the first groove and first positioning pin holes at the bottom of the second groove; the fixed block is arranged in the first groove, is of a cuboid structure, is provided with a second positioning pin hole in the middle of the fixed block, is provided with a fixed groove, and is formed by extending one side end of the cuboid fixed block to the center of the fixed block; the first screw is arranged in the fixing groove and is matched with the first threaded hole; and the positioning pin is matched with two pin holes on one surface of the two pin parts, and is also matched with the first positioning pin hole and the second positioning pin hole.

Description

Clamp base

Technical Field

The application relates to the field of aeroengine part manufacturing, in particular to a clamp base.

Background

Aero-engine systems are complex, involving a wide variety of parts, particularly there are various one-sided two-pin type parts that are dimensionally positioned in a wide variety of processes. In the prior art, a milling fixture is designed for each part, and the milling fixture is usually high in design and manufacturing cost. Moreover, when processing different parts, then need to change different anchor clamps, the complex operation of mounting fixture wastes a large amount of manpowers and man-hour, influences machining's efficiency. In addition, after the various clamps are used, the clamps need to be stored, and a large amount of warehouse space can be occupied. Further, such clamps are often characterized by being of different sizes, and are easily misplaced by a warehouse manager, thereby affecting the process. Therefore, in order to solve the current situation that the machining efficiency of the two-pin parts with multiple varieties and multiple sizes is low, the clamp needs to be improved and innovated.

Disclosure of Invention

In view of this, the present application provides a fixture base for clamping two pin parts of different sizes on one side during processing, its specific structure includes: a bottom plate; the groove is arranged on the upper surface of the bottom plate, transversely penetrates through the upper surface of the bottom plate, takes the middle of the groove as a boundary, is internally provided with a first groove and a second groove, the bottoms of the first grooves are sequentially provided with a plurality of first threaded holes, and the bottoms of the second groove are sequentially provided with a plurality of first positioning pin holes; the fixing block is arranged in the first groove, the fixing block is of a cuboid structure, a second positioning pin hole is formed in the middle of the fixing block, at least one fixing groove is formed in the fixing block, and one side end of the cuboid fixing block extends to the center of the fixing block; a first screw disposed within the fixed slot, the first screw selectively mated with one of the plurality of first threaded holes; and the locating pin is matched with two pin holes on one surface of the two-pin part, and the locating pin is also matched with the first locating pin hole and the second locating pin hole.

By adopting the specific structure, after the two locating pins respectively extend into the two pin holes on the two-pin part on one surface, the two locating pins extend into the first locating pin hole and the second locating pin hole, so that the two-pin part on one surface is fixed on the clamp base. When two pin parts on one surface with different sizes are required to be processed, the clamp base does not need to be replaced, and only the position of the fixing block in the first groove is required to be changed, and the two pin parts on one surface with other sizes can be fixed again by using the first screw. The complex replacement procedure is omitted, the machining efficiency can be improved, and the labor cost is reduced.

As one possible implementation manner, the positioning pin is a stepped shaft-shaped reducing positioning pin, one end of the positioning pin is a first positioning pin end matched with the sizes of two pin holes on one surface of two pin parts, and the other end of the positioning pin is a second positioning pin end matched with the sizes of the first positioning pin hole and the second positioning pin hole.

By adopting the possible implementation mode, the reducing locating pin can be adapted to more one-side two-pin parts without changing the sizes of the first locating pin hole and the second locating pin hole. The processing and forming of the clamp base are simpler and more economical.

As one possible implementation, the first screw tip includes a screw head and a screw shaft; the inner wall of the fixed groove is extended with a step parallel to the upper surface of the fixed block, a gap in the middle of the step is larger than the diameter of the screw rod, and the diameter of the screw head is smaller than the width of the fixed groove and larger than the gap in the middle of the step.

By adopting the possible implementation manner, the gap in the middle of the step is larger than the diameter of the screw rod, so that the screw rod can be ensured to extend into the first threaded hole after extending into the gap. When the screw head compresses tightly the fixed block and carries out spacing, the fixed block is not necessarily in the intermediate position of two first screws, so, set up the step in the fixed slot, can make the stress when the screw head compresses tightly the fixed block more even, fixed effect is better.

As a possible implementation manner, a third positioning pin hole is arranged between the first groove and the second groove, and the size of the third positioning pin hole is matched with that of a central positioning pin.

As one possible implementation, the sizes of the first locating pin hole and the second locating pin hole are the same.

By adopting the possible implementation mode, the sizes of the first positioning pin holes and the second positioning pin holes are the same, the sizes of the second positioning pin ends can be determined, the types of the positioning pins can be reduced, and the cost and the operation difficulty are reduced.

As one possible implementation manner, the positioning pins are multiple, and the first positioning pin end of the positioning pin is multiple in size according to the sizes of the pin holes on the two pin parts on different sides.

By adopting the possible implementation manner, the sizes of the first locating pin ends of the locating pins with various sizes are different so as to adapt to the pin holes with different sizes on the two pin parts with different surfaces.

As one possible implementation manner, the upper surface of the bottom plate is uniformly provided with a plurality of second threaded holes; the clamp base further comprises a second screw matched with the second threaded hole; the fixture base is also provided with a plurality of fixing devices, the fixing devices are fixed on the bottom plate in a matched mode through the second screws matched with the second threaded holes, and the fixing devices are used for abutting/pressing two-pin parts on one surface.

As one possible implementation manner, the number of the fixing grooves is two, and the fixing grooves are symmetrically arranged at the side ends of the cuboid-shaped fixing block.

As a possible implementation, the fixing means is a pressure plate or a compression screw.

Drawings

The individual technical features of the present application and their relationships are further described below with reference to the accompanying drawings. The drawings are exemplary, some technical features are not shown in actual proportion, and some drawings may omit technical features that are conventional in the art to which the present application pertains and are not essential to understanding and realizing the present application, or additionally show technical features that are not essential to understanding and realizing the present application, that is, combinations of the technical features shown in the drawings are not limiting the present application. In addition, throughout this application, like reference numerals refer to like elements. The specific drawings are as follows:

FIG. 1 is a schematic view of a fixture base according to an embodiment of the present application;

FIG. 2 is an exploded view of a clamp base according to an embodiment of the present application;

FIG. 3 is a top view of a clamp base according to an embodiment of the present application;

FIG. 4 is a cross-sectional view of a groove in a clamp base according to an embodiment of the present application;

FIG. 5 is a three-dimensional cross-sectional view of a fixture base mounting block according to an embodiment of the present application;

FIG. 6 is a front view of a locating pin on a clamp base according to an embodiment of the present application;

FIG. 7 is an assembly schematic of a fixture base according to an embodiment of the present application using a centering pin to secure parts;

FIG. 8 is an exploded view of a clamp base according to an embodiment of the present application using a center locating pin to secure a two-sided pin part;

FIG. 9 is a schematic view of a fixture on a fixture base according to an embodiment of the present application;

FIG. 10 is a schematic view of the fixing device on the base of the fixture according to the embodiment of the present application;

FIG. 11 is a schematic diagram of a clamping fixture of a fixture base according to an embodiment of the present disclosure;

fig. 12 is a schematic view of another fastening device on a fixture base for fastening another two-sided pin component.

Reference numerals illustrate: 100-a bottom plate; 110-grooves; 111-a first groove; 1111—a first threaded hole; 112-a second groove; 1121—a first dowel hole; 113-third positioning pin holes; 120-a second threaded hole; 200-fixing blocks; 210-second dowel holes; 220-a fixed slot; 221-steps; 300-first screw; 400-locating pins; 410-a first dowel end; 420-a second dowel end; 500-one-sided two pin part; 600-fixing device; 700-second screw; 800-center locating pin.

Detailed Description

Hereinafter, specific embodiments of the present application will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, the present application provides a jig base for clamping two-pin-on-one parts 500 of different sizes (two-pin-on-one can be interpreted as having two pin holes on the same surface) at the time of machining, which mainly includes a base plate 100, a fixing block 200, and a positioning pin 400 as shown in fig. 6.

As shown in fig. 1 and 2, the bottom plate 100 is a thick plate having a polygonal shape. The upper surface of the base plate 100 is provided with a recess 110 traversing the upper surface of the base plate 100. A plurality of second screw holes 120 are uniformly distributed in the upper surface area at both sides of the groove 110, and the plurality of second screw holes 120 are arranged in a display manner.

As shown in fig. 3, a third positioning pin hole 113 is formed in the middle position in the groove 110, and the third positioning pin hole in the middle position is used as a boundary, one side in the groove 110 is a first groove 111, and the other side is a second groove 112. The bottom of the first groove 111 is sequentially provided with a plurality of first threaded holes 1111; the groove bottom of the second groove 112 is sequentially provided with a plurality of first positioning pin holes 1121.

Therein, as shown in fig. 1-4, the fixing block 200 is disposed in the first recess 111. As shown in fig. 5, the fixing block 200 has a rectangular parallelepiped structure. A second positioning pin hole 210 is arranged in the middle of the fixed block 200, and the second positioning pin hole 210 is a through hole and penetrates through the fixed block 200 up and down. At least one fixing groove 220 is formed in one side end of the fixing block 200, and the fixing groove 220 is in a notch shape and is formed by extending one side end of the fixing block 200 to the center of the fixing block 200. Each of the fixing grooves 220 is provided therein with a first screw 300 engaged with the first screw hole 1111.

Preferably, sliding rails are arranged on the inner walls of the two sides of the first groove 111. Protrusions matched with the sliding rails are respectively arranged on two side surfaces of the fixed block 200, and the two protrusions are clamped with the two sliding rails, so that the fixed block 200 can slide in the first groove 111 through the matching of the sliding rails and the protrusions. In addition, the engagement of the protrusion and the slide rail can also play a role in vertical limiting of the fixing block 200.

In this embodiment, as shown in fig. 5, the number of the fixing grooves 220 is two, and they are respectively opened at both symmetrical side ends of the rectangular parallelepiped-shaped fixing block 200. In addition, in other embodiments, other numbers of the fixing grooves 220 may be used, disposed at different locations on the fixing block 200, or the fixing grooves 220 may be replaced with fixing holes disposed at appropriate locations on the fixing block 200.

In this embodiment, the first screw 300 is composed of a screw head and a screw shaft, the screw head is disk-shaped, and the screw shaft is cylindrical. The screw rod is threaded and mates with the first threaded bore 1111. In addition, in other embodiments, other shapes or types of screws may be used as the first screw 300.

In this embodiment, as shown in fig. 5, a step 221 parallel to the upper surface of the fixing block 200 is extended from the inner wall of the fixing groove 220, and a gap between the steps 221 is larger than the diameter of the screw shaft. And the diameter of the screw head is smaller than the width of the fixing groove 220 and larger than the gap in the middle of the step 221. The screw shaft can pass through the gap in the middle of the step 221 and extend into the first threaded hole 1111, and the screw head can be engaged on the step 221, so that the first screw 300 compresses the fixing block 200 and fixes the position of the fixing block 200 in the first groove 111. In addition, in other embodiments, the step 221 may not be provided.

As shown in fig. 6, the positioning pin 400 has a stepped shaft shape. The alignment pin 400 is mated with two pin holes on one side of the two pin piece 500, while the alignment pin 400 is also mated with the first alignment pin hole 1121 and the second alignment pin hole 210.

In this embodiment, as shown in fig. 6, the positioning pin 400 is a variable diameter positioning pin, one end of which is a first positioning pin end 410 matching the sizes of the two pin holes on the two-sided pin component 500, and the other end of which is a second positioning pin end 420 matching the sizes of the first positioning pin hole 1121 and the second positioning pin hole 210. The first dowel end 410 may be sized to have different diameters depending on the size of the aperture of the two dowel holes in the two-sided dowel part 500 and the second dowel end 420 may be sized to have different diameters depending on the first dowel hole 1121 and the second dowel hole 210, respectively. The first positioning pin ends 410 and the second positioning pin ends 420 with different diameters are respectively combined into positioning pins with different specifications. Preferably, the first and second registration pin holes 1121, 210 are the same size. Accordingly, the second dowel end 420 is one size.

9-12, the clamp base provided in the embodiments of the present application further includes a second screw 700 that mates with the second threaded hole 120, and a plurality/plurality of fixtures 600. The fixing device 600 is fixed to the base plate 100 by the second screw 700 engaged with the second screw hole 120. Meanwhile, the fixing device 600 may be directly provided with a screw structure to be engaged with the second screw hole 120. The fixing device 600 is used for abutting (as shown in fig. 10)/pressing (as shown in fig. 11) the two-sided pin component 500, and fixing the two-sided pin component 500 on the fixture base, so as to facilitate processing thereof.

In this embodiment, the fixing device 600 is a pressing plate or a pressing screw. In addition, in other embodiments, other types of fixtures 600 may be used, such as profiled compacts tailored to different parts, and the like.

In another cleat embodiment of the present application, as shown in fig. 7-8, the third locating pin hole 113 may also be referred to as a center locating pin hole, which cooperates with the center locating pin 800 to locate/secure the two-pin piece 500; meanwhile, the alignment pin 400 and the second alignment pin hole 210. One end of the center positioning pin 800 extends into the one-sided two-pin part 500, and one end extends into the third positioning pin hole 113. In this embodiment, one of the two pin holes of the two pin members 500 is fixed by the positioning pin 400, and the other pin hole is fixed by the center positioning pin 800. The center pin 800 has a disk shape, and the size of the disk needs to be customized according to the inner diameter size of the two-pin member 500 on one side. A protrusion is extended downward from the center of the lower surface of the disc, and the size of the protrusion is matched with the third positioning pin hole 113.

Next, a specific usage method of the present embodiment will be described with reference to the structure of the present embodiment described above.

The specific method comprises the following steps:

step one, aligning one of the pin holes on the one-sided two-pin part 500 with one of the first positioning pin holes 1121;

step two, sliding the fixed block 200 to align the second positioning pin hole 210 on the fixed block 200 with the other pin hole on the one-side two-pin part 500;

step three, pre-fixing or marking the position of the fixing block 200, and temporarily removing one surface of the two-pin part 500;

step four, the position of the fixing block 200 is fixed by screwing the first screw 300 into the first screw hole 1111 through the step 221 of the fixing groove 220;

step five, the second locating pin end 420 of one locating pin is extended into the determined first locating pin hole 1121, and the second locating pin end 420 of the other locating pin is extended into the second locating pin hole 210 or;

step six, moving the one-sided two-pin part 500 back to the position, and simultaneously extending the first positioning pin ends 410 of the two positioning pins 400 into the two pin holes of the one-sided two-pin part 500;

and step seven, fixing the fixing device 600 around the one-sided two-pin part 500 through the second screw 700, screwing the second screw 700 into the second threaded hole 120, and propping up the fixing device 600, thereby realizing the fixation of the one-sided two-pin part 500.

To sum up, the frame base provided in the embodiment of the present application can adaptively clamp one-side two-pin parts 500 in aeroengines with different sizes, so as to perform milling operation on the parts. The fixture base is not required to be removed from the milling machine when the two pin parts 500 with different surfaces are processed, and the position of the fixing block 200 is only required to be adjusted and the matched fixing device 600 is required to be replaced. Therefore, the rack base provided by the embodiment of the application can improve the processing efficiency of the one-side two-pin part 500, and does not occupy excessive warehouse space. Correspondingly, the possibility of taking and misplacing by a warehouse manager is avoided, and the efficiency and the product qualification rate of part processing are ensured on the other hand.

The term "comprising" as used throughout this application should not be construed as limited to what is listed thereafter; it does not exclude other elements or steps.

It will be appreciated that those skilled in the art may implement the application in any suitable manner combining features of one or more embodiments mentioned throughout the application with features of other embodiments.

Note that the above is only the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will appreciate that the present application is not limited to the particular embodiments described herein, but is capable of numerous obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the technical concept of the present application, which falls within the protection scope of the present application.

Claims

1. A fixture base for clamping two pin parts of one face of different sizes during machining, comprising:

a bottom plate;

the groove is arranged on the upper surface of the bottom plate, transversely penetrates through the upper surface of the bottom plate, takes the middle of the groove as a boundary, is internally provided with a first groove and a second groove, the bottoms of the first grooves are sequentially provided with a plurality of first threaded holes, and the bottoms of the second groove are sequentially provided with a plurality of first positioning pin holes;

the fixing block is arranged in the first groove, the fixing block is of a cuboid structure, a second positioning pin hole is formed in the middle of the fixing block, at least one fixing groove is formed in the fixing block, and one side end of the cuboid fixing block extends to the center of the fixing block;

a first screw disposed within the fixed slot, the first screw selectively mated with one of the plurality of first threaded holes;

and the locating pin is matched with two pin holes on one surface of the two-pin part, and the locating pin is also matched with the first locating pin hole and the second locating pin hole.

2. The fixture mount of claim 1, wherein the dowel is a stepped shaft-like reducing dowel having a first dowel end sized to mate with two dowel holes in a two-sided dowel piece at one end and a second dowel end sized to mate with the first dowel hole and the second dowel hole at the other end.

3. The fixture base of claim 1, wherein the fixture base comprises,

the first screw top end comprises a screw head and a screw rod;

the inner wall of the fixed groove is extended with a step parallel to the upper surface of the fixed block, a gap in the middle of the step is larger than the diameter of the screw rod, and the diameter of the screw head is smaller than the width of the fixed groove and larger than the gap in the middle of the step.

4. The fixture mount of claim 2, wherein a third locating pin hole is disposed between the first recess and the second recess, the third locating pin hole having a size that mates with a center locating pin.

5. The fixture mount of claim 4 wherein the first and second dowel holes are the same size.

6. The fixture mount of claim 2 or 5, wherein the plurality of locating pins includes a first locating pin end having a plurality of sizes depending on the size of the pin holes in the two pin parts on different sides.

7. The fixture base of claim 1, wherein the fixture base comprises,

the upper surface of the bottom plate is provided with a plurality of second threaded holes in an array manner;

the clamp base further comprises a second screw matched with the second threaded hole;

the fixture base is also provided with a plurality of fixing devices, the fixing devices are fixed on the bottom plate in a matched mode through the second screws matched with the second threaded holes, and the fixing devices are used for abutting/pressing two-pin parts on one surface.

8. The fixture base of claim 1, wherein the number of the fixing grooves is two, and the fixing grooves are symmetrically arranged at side ends of the cuboid-shaped fixing block.

9. The clamp base of claim 7, wherein the securing means is a pressure plate or a compression screw.