CN212824131U - Thin wall part high accuracy shape frock of preapring for an unfavorable turn of events - Google Patents

Abstract

The utility model discloses a thin wall part high accuracy deformation frock of preapring for an unfavorable turn of events relates to machining technical field, has solved that high accuracy, thin wall bush parts machining degree of difficulty are big, positioning accuracy is low, machining efficiency is low, the product percent of pass is low, at the clamping with dismantle the yielding technical problem of in-process. The high-precision anti-deformation tool for the thin-wall parts comprises a clamp body (1), a pressing plate (3) and an internal expansion core rod (5). The utility model discloses simple structure, the clamping precision is high, and machining efficiency and product percent of pass are high.

Description

Thin wall part high accuracy shape frock of preapring for an unfavorable turn of events

Technical Field

The utility model relates to a machining technical field, concretely relates to thin wall part high accuracy shape frock of preapring for an unfavorable turn of events.

Background

In the components, a plurality of parts with special structures, such as bearing bushes, thin-wall large gaskets, thin-wall supports and other thin-wall parts have the characteristics of light weight, material saving, compact structure and the like, generally play roles in adjustment, positioning, matching with bearings and the like, and are widely applied to various industrial fields of aviation, automobiles, machinery and the like.

The thin-wall bushing part has poor rigidity, weak strength, high precision requirement and very difficult processing, the wall is very easy to deform in the clamping and dismounting processes, cutting vibration can be generated in the processing process, the processing quality of the part is difficult to ensure, the gauge is required to be drawn and aligned after each thin-wall bushing part is processed, the clamping and dismounting are very inconvenient, the processing efficiency is low, and the product percent of pass is low. Therefore, it is very important to design a tool with high positioning accuracy and capable of preventing the product from deforming.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a thin wall part high accuracy shape frock of preapring for an unfavorable turn of events, through screwing up the internal expanding plug and make the location step face on the anchor clamps body laminate with the thin wall part hole completely, screw up lock nut and make the clamp plate sticis the thin wall part, solved high accuracy, thin wall bush parts machining degree of difficulty big, positioning accuracy is low, machining efficiency is low, the product percent of pass is low, at clamping, the yielding technical problem of dismantlement in-process. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

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

a high-precision anti-deformation tool for thin-wall parts is used for positioning and clamping the thin-wall parts to be machined and preventing the parts from deforming in the machining process and comprises a clamp body and an inner expansion core rod arranged on the clamp body; wherein:

a mandrel hole is formed in the clamp body;

a threaded hole is formed in the core rod hole;

one end of the internal expansion core rod is provided with an external thread corresponding to the threaded hole;

the fixture body is also provided with a positioning step surface, an arc surface and a plurality of elastic grooves;

the inner expansion core rod is provided with a locknut;

a pressing plate is arranged between the locknut and the clamp body;

the inner expansion core rod is also provided with a circular truncated cone.

In an alternative embodiment, the inner expanding mandrel is mounted on the threaded hole in the mandrel hole through an external thread at one end.

In an alternative embodiment, one side of the locknut is tightly attached to the pressure plate.

As an alternative embodiment, the plurality of elastic grooves are evenly distributed on the clamp body.

Based on the technical scheme, the following technical effects can be generated:

the embodiment of the utility model provides a pair of thin wall part high accuracy shape frock of preapring for treat that processing thin wall part fixes a position and presss from both sides tightly, prevent that the part warp in the course of working. The utility model discloses a processing part is treated in location step face location, screws up the internal expanding plug and makes anchor clamps body arc surface laminate completely on treating the processing hole, screws up lock nut and makes the clamp plate compress tightly and treat processing nut, prevents that the part from appearing not hard up in the course of working. The technical problems that high-precision thin-wall bushing parts are high in machining difficulty, low in positioning precision, low in machining efficiency, low in product percent of pass and easy to deform in the clamping and disassembling processes are solved. The utility model discloses reduced the clamping, dismantled and alignment time, improved machining efficiency, adopted the repeated clamping positioning accuracy height in hole location, the deflection is low, has improved the product percent of pass.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view (cross-sectional view) of the clamp body;

FIG. 3 is a schematic structural view of an inner expansion core rod;

FIG. 4 is a schematic view of a thin-walled part prior to machining;

FIG. 5 is a schematic view of a machined thin-walled part;

in the figure: 1. a clamp body; 2. thin-walled parts; 3. pressing a plate; 4. a locknut; 5. an inner expansion core rod; 6. a circular arc surface; 7. positioning a step surface; 8. a mandrel hole; 9. an elastic groove; 10. a round table.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.

As shown in fig. 1-5:

the utility model provides a high-precision anti-deformation tool for thin-wall parts, which is used for positioning and clamping the thin-wall parts 2 to be processed and preventing the parts from deforming in the processing process, and comprises a clamp body 1 and an inner expansion core rod 5 arranged on the clamp body 1; wherein:

a mandrel hole 8 is formed in the clamp body 1;

a threaded hole is formed in the mandrel hole 8;

one end of the internal expansion core rod 5 is provided with an external thread corresponding to the threaded hole;

the fixture body 1 is also provided with a positioning step surface 7, an arc surface 6 and an elastic groove 9;

the inner expansion core rod 5 is provided with a locknut 4;

a pressing plate 3 is also arranged between the locknut 4 and the clamp body 1;

the inner expansion core rod 5 is also provided with a circular truncated cone 10.

In an alternative embodiment, the inner expanding mandrel 5 is mounted on the inner threaded hole of the mandrel hole 8 through an outer thread at one end.

In an alternative embodiment, the locknut 4 is pressed against the pressure plate 3 on one side.

As an alternative embodiment, the plurality of elastic grooves 9 are evenly distributed on the clamp body 1.

As an optional implementation mode, the clamp body 1 is clamped on a machine tool, and a finely-turned arc surface 6 is arranged on the clamp body 1 to ensure that the jump of the clamp is within 0.005 mm.

As an optional implementation mode, the thin-walled part 2 to be machined is positioned by the pressing plate 3, the arc surface 6 and the positioning step surface 7, so that the repeated clamping positioning precision is ensured to be within 0.01 mm.

As an optional embodiment, 4 elastic grooves 9 are uniformly distributed on the fixture body 1, so that under the action of the internal expanding core rod 4, the arc surface 6 on the fixture body 1 is completely attached to the inner hole of the part 2 to be processed, and the deformation of the thin-wall part in the processing process is ensured to be within 0.01 mm.

As an optional embodiment, the pressing plate 3 presses the part 2 to prevent the thin-wall part 2 from loosening and damaging in the machining process.

The utility model relates to a thin wall part high accuracy shape frock of preapring for an unfavorable turn of events's working process as follows: the fixture is clamped on a machine tool, the arc surface on the fixture body 1 is expanded by screwing the inner expansion core rod 5, the arc surface is completely attached to the inner hole of the thin-wall part 2, the locknut 4 is screwed so that the pressing plate 3 compresses the thin-wall part 2, the thin-wall part 2 is machined from right to left, the clamping, disassembling and aligning time is reduced, the clamping and positioning precision is high in the repeated machining process, the deformation of the thin-wall part 2 is small, the machining efficiency is effectively improved, and the part production qualified rate is guaranteed.

Claims (4)

1. The utility model provides a thin wall part high accuracy shape frock of preapring for an unfavorable turn of events for treating processing thin wall part (2) and fix a position and press from both sides tightly, prevent that the part warp in the course of working, its characterized in that: comprises a clamp body (1) and an internal expansion core rod (5) arranged on the clamp body (1), wherein:

a mandrel hole (8) is formed in the clamp body (1);

a threaded hole is formed in the mandrel hole (8);

one end of the inner expansion core rod (5) is provided with an external thread corresponding to the threaded hole;

the fixture body (1) is also provided with a positioning step surface (7), an arc surface (6) and a plurality of elastic grooves (9);

the inner expansion core rod (5) is provided with a locknut (4);

a pressing plate (3) is arranged between the locknut (4) and the clamp body (1);

the inner expansion core rod (5) is also provided with a circular truncated cone (10).

2. The high-precision deformation-preventing tool for the thin-wall parts, according to claim 1, is characterized in that: the internal expansion core rod (5) is arranged on the internal thread hole of the core rod hole (8) through the external thread at one end.

3. The high-precision deformation-preventing tool for the thin-wall parts, according to claim 1, is characterized in that: one surface of the locknut (4) is tightly attached to the pressing plate (3).

4. The high-precision deformation-preventing tool for the thin-wall parts, according to claim 1, is characterized in that: the elastic grooves (9) are uniformly distributed on the fixture body (1).

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