CN214212273U

CN214212273U - Clamping fixture for compressor impeller

Info

Publication number: CN214212273U
Application number: CN202023066798.XU
Authority: CN
Inventors: 樊娇龙
Original assignee: BAOJI XILI PRECISION MACHINERY CO LTD
Current assignee: BAOJI XILI PRECISION MACHINERY CO LTD
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-09-17
Anticipated expiration: 2030-12-18

Abstract

The utility model provides a clamping anchor clamps for compressor impeller, including locating the epaxial collet chuck of lathe owner, the collet chuck outside is equipped with the lathe switching dish, collet chuck is used for pressing from both sides the rear end cylinder of tight impeller, the fixed position sleeve that is equipped with on the terminal surface before the lathe switching dish, evenly be equipped with on the position sleeve front end torus a plurality of and the impeller on a plurality of blade space adaptation between a plurality of helical blade location centering tooth, the location centering tooth stretches out along the position sleeve axial, the impeller location centering tooth realizes the centering location to the impeller in the blade space corresponding the card when the clamping. The utility model discloses a combination of collet chuck and position sleeve fixes a position the compressor impeller, can be fast accurate realize the centering and the terminal surface location to the compressor impeller, can once accomplish the processing of impeller right side and hole, improve gyration inertia, improve the manufacturability, practice thrift the processing cost, fine solved the difficult unified of impeller processing mesoscopic standard and clamping location benchmark, the processing problem that the clamping warp.

Description

Clamping fixture for compressor impeller

Technical Field

The utility model belongs to the technical field of anchor clamps, concretely relates to clamping anchor clamps for compressor impeller.

Background

The compressor impeller has a complex shape and high precision, and the design of the clamp has certain difficulty. In the structure of the compressor impeller shown in fig. 1, the machining part comprises an outer diameter, an inner hole and two end faces, wherein the requirement of the inner hole is high. When clamping, the direct clamping is not good in axial positioning due to the fact that the length of the rear end cylinder is short. The traditional process generally adopts a blade clamping method and a boring and floating reaming process, has long working procedures and high reamer manufacturing cost, the hole size can be controlled to be 0.005 generally, the precision is not easy to guarantee, and the clamping mode easily causes the deformation of blades on an impeller of the gas compressor and greatly affects the quality of workpieces. There is therefore a need for improvements.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem: the utility model provides a clamping anchor clamps for compressor impeller, the utility model discloses a combination of collet chuck and position sleeve is fixed a position the compressor impeller, can realize the centering and the terminal surface location to the compressor impeller fast, can once accomplish the preceding processing that reaches the hole of impeller, improves gyration inertia, improves the manufacturability, practices thrift the processing cost, fine solution among the impeller machining size benchmark and the difficult unified, the processing problem that the clamping warp of clamping location benchmark.

The utility model adopts the technical proposal that: a clamping anchor clamps for compressor impeller, including locating the collet chuck on the lathe main shaft, the collet chuck outside is equipped with the lathe switching dish that tightens up through conical surface structure drive collet chuck, collet chuck is used for pressing from both sides tight compressor impeller's rear end cylinder, the fixed position sleeve that is equipped with on the terminal surface before the lathe switching dish, evenly be equipped with a plurality of and the compressor impeller on the position sleeve front end ring face between a plurality of helical blade space adaptation location centering tooth, location centering tooth stretches out along the position sleeve axial, the compressor impeller location centering tooth is realized the centering location to the compressor impeller in the blade space corresponding card when the clamping.

The technical scheme is further limited, the positioning sleeve comprises a positioning sleeve body, the positioning centering teeth are circumferentially and uniformly distributed on the front end face of the positioning sleeve body, a flange plate fixedly connected with a machine tool switching disc is arranged at the rear end of the positioning sleeve body, the flange plate is fixedly connected with the machine tool switching disc through screws, and holes for the screws to penetrate through are formed in the flange plate.

In order to further limit the technical scheme, the number of the positioning and centering teeth on the positioning sleeve is the same as the number of the blade gaps on the compressor impeller.

In order to further limit the technical scheme, the number of the positioning and centering teeth on the positioning sleeve is less than that of the blade gaps on the compressor impeller, and the positioning and centering teeth can be uniformly distributed in the corresponding blade gaps in the circumference.

The utility model has the advantages compared with the prior art:

when the scheme is used, the rear end cylinder of the impeller is clamped by the spring chuck firstly, then the positioning centering teeth and the blade gaps are matched through the positioning sleeves to realize quick and accurate centering and end face positioning when the compressor impeller is clamped, the front and inner hole machining of the impeller can be completed once, the rotation inertia is improved, the manufacturability is improved, the machining cost is saved, and the machining problems that the size reference and the clamping positioning reference are difficult to unify and the clamping deformation are caused in the impeller machining are well solved.

Drawings

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

FIG. 2 is a schematic structural view of the positioning and centering teeth of the positioning sleeve in clearance fit with the blades of the present invention;

FIG. 3 is a schematic structural view of the middle positioning sleeve of the present invention;

fig. 4 is a schematic structural view of the compressor impeller of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements" does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Referring to fig. 1-4, embodiments of the present invention are detailed.

The clamping fixture for the compressor impeller comprises a spring chuck 2 arranged on a machine tool spindle, and a machine tool adapter plate 4 for driving the spring chuck 2 to tighten through a conical surface structure is arranged outside the spring chuck 2, as shown in fig. 1. The spring chuck 2 is used for clamping a rear end cylinder 5-1 of the compressor impeller 5.

The front end face of the machine tool adapter plate 4 is fixedly provided with a positioning sleeve 1, as shown in fig. 3, the positioning sleeve 1 comprises a positioning sleeve body 1-1, a plurality of positioning and centering teeth 1-2 matched with a plurality of blade gaps 5-3 between helical blades 5-2 on an air compressor impeller 5 are uniformly arranged on the annular end face of the front end of the positioning sleeve 1, the positioning and centering teeth 1-2 are circumferentially and uniformly distributed on the front end face of the positioning sleeve body 1-1, and the positioning and centering teeth 1-2 axially extend out of the positioning sleeve body 1. The rear end of the positioning sleeve body 1-1 is provided with a flange plate 1-3 which is fixedly connected with a machine tool switching plate 4, the flange plate 1-3 is fixedly connected with the machine tool switching plate 4 through a screw 3, and a hole 1-4 for the screw 3 to pass through is formed in the flange plate 1-3. When the compressor impeller 5 is clamped, the positioning and centering teeth 1-2 are correspondingly clamped in the blade gaps 5-3 to realize rapid and accurate centering and positioning of the compressor impeller 5, as shown in fig. 2.

The number of the positioning and centering teeth 1-2 of the positioning sleeve 1 is designed according to the number of the blades of the impeller, so that the spiral blades 5-2 are kept away, and the positioning and centering teeth can be arranged in blade gaps 5-3 between the spiral blades 5-2. Specifically, the following two embodiments may be adopted:

embodiment 1: the number of the positioning and centering teeth 1-2 on the positioning sleeve 1 is the same as that of the blade gaps 5-3 on the compressor impeller 5, and each blade gap 5-3 is provided with the corresponding positioning and centering tooth 1-2.

Embodiment 2: the number of the positioning centering teeth 1-2 on the positioning sleeve 1 is less than that of the blade gaps 5-3 on the compressor impeller 5, and the positioning centering teeth can be equally distributed in the corresponding blade gaps 5-3 in the circumference.

Adopt the utility model discloses the compressor impeller that processing figure 4 shows: firstly, the clamp is used, a spring chuck 2 is used for clamping a rear end cylinder 5-1 of an air compressor impeller 5, then the centering and end face positioning of the impeller clamping are realized through the matching of positioning centering teeth 1-2 on a positioning sleeve 1 and blade gaps 5-3, and the turning of the front, inner holes and large outer circles of the impeller can be completed at one time; and turning in a second sequence, wherein the lathe diaphragm chuck clamps the large excircle at the front end of the impeller to complete turning of the back and the excircle. The utility model provides the high gyration inertia improves the manufacturability, practices thrift the processing cost, fine solution in the impeller machining size benchmark and the difficult unified, the processing problem that the clamping warp of clamping location benchmark.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A clamping anchor clamps for compressor impeller, including locating collet chuck (2) on the lathe main shaft, collet chuck (2) outside is equipped with lathe switching dish (4) that tighten up through conical surface structure drive collet chuck (2), its characterized in that: the spring chuck (2) is used for clamping a rear end cylinder (5-1) of the compressor impeller (5), a positioning sleeve (1) is fixedly arranged on the front end face of the machine tool adapter plate (4), a plurality of positioning and centering teeth (1-2) matched with blade gaps (5-3) between a plurality of spiral blades (5-2) on the compressor impeller (5) are uniformly arranged on the circular ring end face of the front end of the positioning sleeve (1), the positioning and centering teeth (1-2) axially extend out of the positioning sleeve (1), and the positioning and centering teeth (1-2) of the compressor impeller (5) are correspondingly clamped in the blade gaps (5-3) during clamping to realize quick and accurate centering and positioning of the compressor impeller (5).

2. The clamping fixture for the compressor wheel as claimed in claim 1, wherein: the positioning sleeve (1) comprises a positioning sleeve body (1-1), positioning centering teeth (1-2) are circumferentially and uniformly distributed on the circular ring end face of the front end of the positioning sleeve body (1-1), a flange plate (1-3) fixedly connected with a machine tool switching plate (4) is arranged at the rear end of the positioning sleeve body (1-1), the flange plate (1-3) is fixedly connected with the machine tool switching plate (4) through a screw (3), and a hole (1-4) for the screw (3) to pass through is formed in the flange plate (1-3).

3. The clamping fixture for the compressor wheel as claimed in claim 2, wherein: the number of the positioning and centering teeth (1-2) on the positioning sleeve (1) is the same as that of the blade gaps (5-3) on the compressor impeller (5).

4. The clamping fixture for the compressor wheel as claimed in claim 2, wherein: the number of the positioning and centering teeth (1-2) on the positioning sleeve (1) is less than that of the blade gaps (5-3) on the compressor impeller (5), and the positioning and centering teeth can be uniformly distributed in the corresponding blade gaps (5-3) in the circumference.