CN220575694U - Quick alignment fixture - Google Patents

Abstract

The utility model discloses a rapid alignment fixture, which belongs to the field of machining, and is characterized in that when the fixture is used, a part is hung on a supporting block, after the part passes through a centering seat and an alignment seat, the part is screwed into a centering rod to complete centering, the part is screwed into the alignment rod to complete alignment, and then the part is positioned and fixed through a clamping assembly to complete clamping work; this quick alignment clamp has three advantage: firstly, the alignment speed is high, the alignment of the parts can be completed only by sequentially screwing the centering rod and the alignment rod, the parts do not need to be repeatedly moved, and time and labor are saved; the centering effect is good for eccentric parts with larger mass. Secondly, the alignment quality is high, and the over-positioning design of the centering rod, the alignment rod and the taper pin structure ensures that the centering rod and the alignment rod always have conical surfaces to keep contact with the contours of the parts in the alignment process, so that the alignment accuracy is ensured. Thirdly, the mechanism has simple structure, low manufacturing cost, convenient installation and operation and good manufacturability and popularization.

Description

Quick alignment fixture

Technical Field

The utility model belongs to the field of machining, and particularly relates to a rapid alignment clamp.

Background

The machining fixture is widely applied to the machining industry and generally consists of an alignment element, a clamping device, a connecting element, a fixture base and the like; the purpose of the alignment element is to determine the correct position of a workpiece in the clamp, plays a vital role, the alignment precision directly determines the processing quality of the part, and the alignment efficiency determines the processing efficiency of the part.

In the first machining process, the blank shape or the bearing hole is usually adopted as a reference for alignment, and the alignment mode is simple and reliable; however, for some shell parts with large mass and serious eccentricity, the alignment efficiency is not high, operators need to repeatedly move the parts according to the alignment condition, and because the parts have large mass, the movement amount is difficult to accurately and manually control, and the alignment process is time-consuming and labor-consuming.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a rapid alignment clamp which can solve the technical problems of poor alignment precision and low efficiency of shell parts with larger mass and serious eccentricity.

In order to achieve the above purpose, the present utility model adopts the following technical contents:

a rapid alignment fixture comprises a bottom plate;

the bottom plate is fixedly provided with a supporting block, a centering seat and a clamping assembly;

the supporting block and the clamping assembly are positioned around the bottom plate, and the centering seat and the axle center of the centering seat are positioned on the same straight line;

the centering seat is connected with a centering rod in a threaded manner; the alignment seat is in threaded connection with an alignment rod;

taper pin structures are respectively arranged in the middle of the centering rod and the middle of the centering rod.

Further, the taper pin structure of the centering rod and the taper pin structure of the alignment rod are both taper pin structures with three contact points.

Further, the top of the centering rod and the top of the alignment rod are provided with inner hexagonal holes.

Further, the centering rod is inserted into the pin hole of the centering seat, and the external thread at the bottom of the centering rod is connected with the internal thread at the bottom of the cavity of the centering seat.

Further, the alignment rod is inserted into the pin hole of the alignment seat, and the external thread at the bottom of the alignment rod is connected with the internal thread at the bottom of the cavity of the alignment seat.

Further, the clamping assembly includes a pressure plate secured to the base plate and a side stop mechanism.

Further, one end of the pressing plate is fixedly connected with the bottom plate through a bolt, a pressing bolt is inserted into the middle strip-shaped hole, and the other end of the pressing plate is positioned right above the supporting block; the compression bolt is provided with a compression nut matched with the compression bolt.

Further, the side blocking mechanism comprises a mechanism seat fixed on the bottom plate, and an ejector rod capable of axially moving is inserted in the axial direction of the mechanism seat.

Further, the number of the pressing plates and the number of the side blocking mechanisms are 3 respectively; the 3 pressing plates are uniformly distributed; the 3 side baffle mechanisms are uniformly distributed.

Further, the number of the supporting blocks is 3; the 3 supporting blocks are uniformly distributed.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model provides a rapid alignment fixture, which is characterized in that a supporting block, a centering seat, an alignment seat and a clamping assembly are fixedly connected on a bottom plate, wherein the centering seat and the alignment seat are positioned at the middle part of the bottom plate, and a centering rod and an alignment rod positioned in the centering seat and the alignment seat are used for centering and aligning a part; the supporting blocks and the clamping assemblies are positioned around the bottom plate and are responsible for clamping the parts after the centering and aligning procedures so as to carry out subsequent part machining operation; taper pin structures are respectively arranged on the centering rod and the aligning rod, and the taper pin structures can keep contact with the contour of the part by rotating the centering rod and the aligning rod in the centering and aligning process, so that the centering and aligning effects are ensured; when the clamping fixture is used, a part is hung on the supporting block, after the part passes through the centering seat and the centering seat, the centering rod is screwed in to finish centering, and then the part is positioned and fixed through the clamping assembly to finish clamping work; this quick alignment clamp has three advantage: firstly, the alignment speed is high, the alignment of the parts can be completed only by sequentially screwing the centering rod and the alignment rod, the parts do not need to be repeatedly moved, and time and labor are saved; the centering effect is good for eccentric parts with larger mass. Secondly, the alignment quality is high, and the over-positioning design of the centering rod, the alignment rod and the taper pin structure ensures that the centering rod and the alignment rod always have conical surfaces to keep contact with the contours of the parts in the alignment process, so that the alignment accuracy is ensured. Thirdly, the mechanism has simple structure, low manufacturing cost, convenient installation and operation and good manufacturability and popularization.

Preferably, the taper pin structure of the centering rod and the taper pin structure of the aligning rod adopt taper pin structures with three contact points, and the taper pin structure design of the three contact points can ensure that the taper surface is always in contact with the contour of the part in the centering and aligning process, so that the centering and aligning have higher accuracy.

Preferably, the top of the centering rod and the top of the aligning rod are provided with the inner hexagonal holes, and the inner hexagonal holes are matched with the hexagonal wrench, so that the centering rod and the aligning rod can be conveniently screwed in and out, and the working efficiency is improved.

Preferably, the centering rod is connected with the internal thread at the bottom of the cavity of the centering seat through the external thread at the bottom, and the centering rod can be conveniently rotated in a threaded connection mode, so that accurate centering can be quickly realized.

Preferably, the alignment rod is connected with the internal thread at the bottom of the alignment seat cavity through the external thread at the bottom, and the alignment rod can be conveniently rotated in a threaded connection mode, so that accurate alignment can be quickly realized.

Preferably, the clamping assembly comprises a side blocking mechanism and a pressing plate, and after the centering and aligning process is finished, the side blocking mechanism and the pressing plate are clamped and matched to limit the freedom degrees of the parts in six directions.

Still preferably, the support blocks, the side blocking mechanisms and the pressing plates are all 3 and are uniformly distributed, so that the stability and the reliability of the clamp are improved.

Drawings

FIG. 1 is a schematic structural view of a quick alignment fixture according to an embodiment of the present utility model;

FIG. 2 is a top view of a quick alignment fixture according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view taken along line A-A in FIG. 2 in accordance with an embodiment of the present utility model;

FIG. 4 is a schematic structural view of a centering rod of a quick alignment fixture according to an embodiment of the present utility model;

FIG. 5 is a schematic view of the structure of the alignment rod of the quick alignment fixture according to the embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a centering seat of the quick alignment fixture according to an embodiment of the present utility model, where fig. 6 (a) is a top view, and fig. 6 (B) is a B-B cross-sectional view in fig. 6 (a);

fig. 7 is a schematic structural diagram of an alignment seat of the quick alignment fixture according to an embodiment of the present utility model, where fig. 7 (a) is a top view, and fig. 7 (b) is a cross-sectional view taken along the direction C-C in fig. 7 (a);

fig. 8 is a working state diagram of the quick alignment fixture according to the embodiment of the utility model.

Reference numerals:

a base plate-1; a support block-2; a pressing plate-3; a compression nut-4; compression bolt-5; a side gear mechanism-6; centering seat-7; centering rod-8; aligning the rod-9; aligning the seat-10.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the embodiments of the present utility model, it should be noted that, if the terms "upper," "lower," "horizontal," "inner," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the term "horizontal" if present does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The utility model is described in further detail below with reference to the attached drawing figures:

examples

As described in the background art, for some shell parts with larger mass and serious eccentricity, the alignment efficiency is not high, operators need to repeatedly move the parts according to the alignment condition, and because the mass of the parts is larger, the movement amount is difficult to accurately and manually control, the alignment process is time-consuming and labor-consuming, the alignment precision is poor, and the working efficiency is low; in order to solve the above problems, the present embodiment provides a quick alignment fixture, which is based on the over-positioning principle, centers a center bearing hole of a part, aligns an edge bearing Kong Zhaozheng by means of a hexagonal wrench, and can complete alignment by one-time tightening without manually knocking or repeatedly moving the part, so that the alignment efficiency is high, the alignment quality is good, and the production efficiency is improved while the labor intensity is reduced; meanwhile, the manufacturing cost is low, the installation and the operation are simple, the popularization value is certain, and the concrete structure is as follows:

as shown in fig. 1 and 2, the present embodiment provides a quick alignment fixture, which mainly comprises a bottom plate 1, a supporting block 2, a pressing plate 3, a compression nut 4, a compression bolt 5, a side blocking mechanism 6, a centering seat 7, a centering rod 8, an alignment rod 9 and an alignment seat 10.

The supporting block 2 is fixedly arranged on the bottom plate 1 through standard bolts, and the compression bolt 5 penetrates through the compression nut 4 and the pressing plate 3 and is fixedly arranged on the bottom plate 1; the side guard mechanism 6 is fixed to the base plate 1 by standard bolts.

As shown in fig. 3, the bottom of the centering seat 7 is connected with the base plate 1 through pin hole matching and then fixed on the base plate 1 through standard bolts, and preferably, the centering seat 7 can be fixed at the center position of the base plate 1. The middle column part of the centering rod 8 can extend into the centering seat 7 through pin hole matching.

As shown in fig. 4 and 5, the external bottom thread is connected with the internal bottom thread of the cavity of the centering seat 7. The middle column part of the alignment rod 9 can extend into the alignment seat 10 through pin hole matching, and the external thread at the bottom is connected with the internal thread at the bottom of the cavity of the alignment seat 10; the bottom of the aligning seat 10 is connected with the bottom plate 1 through pin hole matching and then fixed on the bottom plate 1 through standard bolts.

The middle parts of the centering rod 8 and the centering rod 9 all adopt three-point contact taper pin structures, belong to oversubscribing structures, and ensure that conical surfaces and part contours are kept in contact all the time in the centering process, so that the centering effect is ensured. External threads are arranged at the bottoms of the centering rod 8 and the centering rod 9 and are used for connecting the centering seat 7 and the centering seat 10; the top all is provided with interior hexagonal counter bore, is convenient for hexagonal spanner to screw up it.

As shown in fig. 6 and 7, the pin hole matching section of the centering rod 8 and the centering seat 7 realizes centering of the part; the pin hole matching section of the alignment rod 9 and the alignment seat 10 realizes the alignment of the parts. The bottom of the centering seat 7 and the bottom of the centering seat 10 are provided with internal threads for connecting the centering rod 8 and the centering rod 9.

As shown in fig. 8, the present embodiment provides a quick alignment fixture, and its working principle, that is, the specific operation steps of the fixture are as follows:

1. and (3) loosening the clamp to obtain all the pressing plates 3 and the side holding mechanism 6, and hanging the part to be processed on the three supporting blocks 2 of the clamp, so that the center bearing hole of the part is approximately aligned with the center of the centering seat 7, and the edge bearing hole is approximately aligned with the center of the centering seat 10.

2. The centering rod 8 is inserted into the centering seat 7 after passing through the part, the centering rod 8 is screwed into the centering seat by a hexagonal wrench, and the screwing is stopped when the part does not move transversely any more, so that the centering of the part is completed.

3. The alignment rod 9 is inserted into the alignment seat 10 after passing through the part, the alignment rod 9 is screwed in by a hexagonal wrench, the screwing in is stopped when the part does not swing around the alignment rod 8 any more, and the part alignment work is completed at the moment.

4. And (3) screwing up the three compression nuts 4 to enable each pressing plate 3 to compress the part.

5. And (5) screwing up the ejector rods of the three side holding mechanisms 6 to hold the periphery of the part tightly.

6. The centering rod 8 and the centering rod 9 are unscrewed, so that all clamping work of the parts is completed, and the next machining step can be performed.

In summary, the quick alignment fixture provided in this embodiment can solve the problem that the alignment process consumes time and labor and severely restricts the improvement of the processing efficiency due to the fact that the mass of part of shell parts is large, the eccentricity is serious, the movement is difficult.

Compared with the existing clamping measures, the quick alignment clamp provided by the embodiment has the following advantages:

firstly, the alignment speed is high, the alignment of the parts can be completed only by sequentially screwing the centering rod and the alignment rod, the parts do not need to be repeatedly moved, and time and labor are saved; the centering effect is good for eccentric parts with larger mass. Secondly, the alignment quality is high, and the over-positioning design of the centering rod and the alignment rod double three-point taper pin ensures that the centering rod and the alignment rod always have conical surfaces to keep contact with the contours of the parts in the alignment process, so that the alignment accuracy is ensured. Thirdly, the mechanism has simple structure, low manufacturing cost, convenient installation and operation and good manufacturability and popularization.

The above embodiment is only one of the implementation manners capable of implementing the technical solution of the present utility model, and the scope of the claimed utility model is not limited to the embodiment, but also includes any changes, substitutions and other implementation manners easily recognized by those skilled in the art within the technical scope of the present utility model.

Claims (10)

1. The quick alignment clamp is characterized by comprising a bottom plate (1);

the base plate (1) is fixedly provided with a supporting block (2), a centering seat (7), an alignment seat (10) and a clamping assembly;

the supporting block (2) and the clamping assembly are positioned around the bottom plate (1), and the center seat (7) and the axis of the aligning seat (10) are positioned on the same straight line;

a centering rod (8) is connected to the centering seat (7) through threads; the alignment seat (10) is in threaded connection with an alignment rod (9);

taper pin structures are respectively arranged in the middle of the centering rod (8) and the middle of the centering rod (9).

2. A quick alignment fixture according to claim 1, characterized in that the taper pin structure of the centering rod (8) and the taper pin structure of the alignment rod (9) are both taper pin structures with three contact points.

3. Quick alignment fixture according to claim 1, characterized in that the top of the centering rod (8) and the top of the alignment rod (9) are provided with hexagonal holes.

4. The quick alignment fixture according to claim 1, wherein the centering rod (8) is inserted into a pin hole of the centering seat (7), and an external thread at the bottom of the centering rod (8) is connected with an internal thread at the bottom of a cavity of the centering seat (7).

5. The quick alignment fixture according to claim 1, wherein the alignment rod (9) is inserted into a pin hole of the alignment seat (10), and an external thread at the bottom of the alignment rod (9) is connected with an internal thread at the bottom of a cavity of the alignment seat (10).

6. A quick alignment clamp according to claim 1, characterized in that the clamping assembly comprises a pressure plate (3) and a side stop mechanism (6) fixed to the base plate (1).

7. The rapid alignment fixture according to claim 6, wherein one end of the pressing plate (3) is fixedly connected with the bottom plate (1) through a bolt, a pressing bolt (5) is inserted into the middle strip-shaped hole, and the other end of the pressing plate is positioned right above the supporting block (2); the compression bolt (5) is provided with a compression nut (4) matched with the compression bolt.

8. A quick alignment jig according to claim 6, characterized in that the side-stop mechanism (6) comprises a mechanism seat fixed on the bottom plate (1), and an ejector rod capable of axially moving is inserted in the axial direction of the mechanism seat.

9. A quick alignment jig according to claim 6, characterized in that the number of the press plate (3) and the side catch mechanism (6) is 3; the 3 pressing plates (3) are uniformly distributed; the 3 side baffle mechanisms (6) are uniformly distributed.

10. A quick alignment jig according to claim 1, characterized in that the number of support blocks (2) is 3; the 3 supporting blocks (2) are uniformly distributed.