CN217832712U - Lathe fixture for finish machining of central inner hole of impeller shaft - Google Patents

Abstract

The utility model discloses a turning attachment for fine processing of impeller shaft center hole, including the turning attachment base, the bush, the spacer pin, locating pin and gland, wherein the locating pin uses the part for the cooperation, the turning attachment base is ladder cylindrical structure, the turning attachment base from left to right includes the erection section in proper order, spacing section and section of putting into, the section of putting into is inside to have the chamber of putting into that supplies the impeller to put into, the outside detachable of anchor clamps base is equipped with the gland that is used for compressing tightly the impeller, spacing section is equipped with spacing pinhole on leaning on the terminal surface of putting into section one side, be equipped with the spacer pin in the spacer pin hole, the inside coaxial location pinhole that is equipped with of erection section and spacing section, be equipped with in the location pinhole with locating pin complex bush. The utility model has simple structure, reduces cost, shortens processing period, ensures the requirement of product size precision and coaxiality, and improves product quality; the impeller is rapidly clamped, the summarizing, clamping and machining efficiency of the part machining process is improved, and the requirement on the skill of an operator is reduced.

Description

Lathe fixture for finish machining of central inner hole of impeller shaft

Technical Field

The utility model relates to a turning attachment, in particular to be used for the finish machining of impeller shaft center hole turning attachment.

Background

The impeller is related to a plurality of oil pump products, the requirements of the processing size precision and the assembly coaxiality of the central inner hole of the impeller shaft are high, and in order to ensure the requirements of the precision and the assembly coaxiality precision of the central inner hole of the impeller shaft, the prior processing scheme is as follows: the method comprises the steps of firstly drilling a central primary hole in an impeller shaft, then positioning the central primary hole and carrying out reaming machining on the basis of the central primary hole, wherein a special clamp is not arranged during machining of the impeller, the precision size of a machined central inner hole of the shaft is poor, the coaxiality of the central inner hole of the shaft and an outer circle is poor, the failure rate is high, and the machining efficiency is low, so that a lathe clamp for finish machining of the central inner hole of the impeller shaft is needed to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, provide a turning attachment who is used for impeller shaft center hole finish machining.

The utility model discloses technical scheme:

the utility model provides a turning attachment for finish machining of impeller shaft center hole, includes turning attachment base, bush, spacer pin, locating pin and gland, and wherein the locating pin uses the part for the cooperation, turning attachment base is ladder cylindrical structure, and turning attachment base from left to right includes erection section, spacing section in proper order and puts into the section, it has the chamber of putting into that supplies the impeller to put into the section inside, the outside detachable of fixture base is equipped with the gland that is used for compressing tightly the impeller, spacing section is equipped with spacing pinhole on leaning on the terminal surface of putting into section one side, is equipped with the spacer pin in the spacer pin hole, the coaxial location pinhole that is equipped with in the inside of erection section and spacing section is equipped with in the location pinhole, be equipped with in the location pinhole with locating pin complex bush.

Further, the gland includes annular lid and block, be equipped with the semicircle orifice on the outer periphery of block, the centre of block is equipped with the round hole of stepping down.

Furthermore, the outside of putting into the section is equipped with the external screw thread, and the inside of annular lid is equipped with the internal thread with external screw thread complex.

The utility model discloses turning attachment compresses tightly the location through impeller shaft center hole and terminal surface gland just, and reuse boring cutter boring system impeller shaft precision center hole has guaranteed impeller center hole size precision and assembly axiality requirement, has guaranteed that the part accords with the product pattern requirement, the utility model discloses compare in prior art and have following beneficial effect:

1) The structure is simple, the cost is reduced, the processing period is shortened, the dimensional precision requirement and the coaxiality requirement of a product are ensured, and the product quality is improved;

2) The impeller is clamped quickly, the assembly clamping machining efficiency of the part machining process is improved, and the skill requirements on operators are reduced.

Drawings

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is a front view of the lathe fixture base according to the preferred embodiment of the present invention;

FIG. 3 isbase:Sub>A cross-sectional view taken along A-A of FIG. 2;

fig. 4 is a schematic structural view of a positioning pin according to a preferred embodiment of the present invention;

FIG. 5 is a side sectional view of the gland in accordance with the preferred embodiment of the present invention;

FIG. 6 is a front view of the gland in the preferred embodiment of the present invention;

fig. 7 is a schematic view of the impeller according to the preferred embodiment of the present invention;

fig. 8 is a side view of the impeller in the preferred embodiment of the invention;

fig. 9 is a schematic view of the positioning of the impeller in the preferred embodiment of the present invention;

FIG. 10 is a schematic view of the impeller of the preferred embodiment of the present invention;

in the figure: the lathe fixture comprises a lathe fixture base 1, a bushing 2, a limiting pin 3, a positioning pin 4, a gland 5, an impeller 6, a three-jaw chuck 7, an installation section 11, a limiting section 12, an embedding section 13, an annular cover body 51, a cap 52, a limiting pin hole 121, a positioning pin hole 111, an embedding cavity 131, a semicircular hole 521 and a yielding circular hole 522.

Detailed Description

The present invention can be further described by the following embodiments, however, the scope of the present invention is not limited to the following embodiments.

Example 1: as shown in fig. 1-10, a lathe fixture for finish machining of a central bore of an impeller shaft comprises a lathe fixture base 1, a bushing 2, a limit pin 3, a locating pin 4 and a gland 5, wherein the locating pin 4 is a matched component, the lathe fixture base 1 is in a stepped cylindrical structure, the lathe fixture base 1 needs to be designed according to the contour of an outer circle of the impeller, the central bore of the shaft and the axial dimension of the impeller, specifically, the lathe fixture base 1 sequentially comprises an installation section 11, a limit section 12 and an embedding section 13 from left to right, an embedding cavity 131 for the impeller to be embedded in is arranged in the embedding section 13, the depth of the embedding cavity 131 is smaller than the axial dimension of the impeller so that the gland 5 can compress, the gland 5 for compressing the impeller is detachably arranged on the outer side of the fixture base 1, specifically, gland 5 is at impeller installation earlier through locating pin 4 location back recompression impeller terminal surface when putting into chamber 131, spacing section 12 is equipped with spacing pinhole 121 by putting into the terminal surface of section 13 one side, is equipped with spacer pin 3 in the spacing pinhole 121, and when spacer pin 3 was used for finish machining impeller shaft center hole, prevents that the impeller blade is putting into the intracavity 131 internal rotation, the coaxial locating pin hole 111 that is equipped with in installation section 11 and spacing section 12's inside, be equipped with in the locating pin hole 111 with locating pin 4 complex bush 2, bush 2 and locating pin 4 are used for fixing a position the first hole in the center of impeller shaft, make things convenient for the quick location clamping of part, the external diameter that locating pin 4 inserted the end is unanimous with the first internal diameter in impeller shaft center hole, and bush 2 center hole size can be adjusted and change according to the first size in impeller shaft center hole.

The gland 5 comprises an annular cover body 51 and a cap 52, and a semicircular hole 521 is formed in the outer circumferential surface of the cap 52.

The centre of block is equipped with the round hole 522 of stepping down, and round hole 522 of stepping down is stepped down to the plug of locating pin 4.

Further, the external portion of the inserting section 13 is provided with an external thread, the internal portion of the annular cover body 51 is provided with an internal thread matched with the external thread, the end cover 5 can be pressed against the end face of the impeller 6 by rotating the end cover 5, and the semicircular hole 521 can play a role in skid resistance when the end cover 5 is screwed.

The utility model discloses the course of working as follows:

1) Firstly, the bushing 2 is arranged in a positioning pin hole 111 of a lathe clamp base 1, and then the limiting pin 3 is arranged in a limiting pin hole 121 of the limiting section 12;

2) Clamping the mounting section 11 on a lathe three-jaw chuck 7;

3) The impeller 6 is arranged in the placing cavity 131, the small end of the positioning pin 4 penetrates through the primary hole in the center of the impeller shaft and is inserted into the bushing 2 for positioning, the impeller is rotated clockwise around the positioning pin 4, the impeller blade contacts with the limiting pin 3, the position of the blade is further limited by the limiting pin 3, and the end face of the impeller 6 is pressed by the pressure cover 5, so that the positioning is completed, as shown in fig. 9;

4) After the positioning is finished, the positioning pin 4 is pulled out, as shown in fig. 10;

5) Boring a central inner hole of the impeller shaft by using a boring machine, loosening the gland 5 after boring is finished, and taking out the impeller;

6) And replacing the impeller and repeating the steps to process the next product.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. 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 (3)

1. The utility model provides a turning attachment for finish machining of impeller shaft center hole, its characterized in that, includes turning attachment base, bush, spacer pin, locating pin and gland, and wherein the locating pin uses the part for the cooperation, the turning attachment base is ladder cylindrical structure, and turning attachment base from left to right includes installing section, spacing section and puts into the section in proper order, it has the chamber of putting into that supplies the impeller to put into section inside, the outside detachable of fixture base is equipped with the gland that is used for compressing tightly the impeller, spacing section is equipped with spacing pinhole on leaning on the terminal surface of putting into section one side, is equipped with the spacer pin in the spacer pin hole, the coaxial locating pin hole that is equipped with in inside of installing section and spacing section, be equipped with in the locating pin hole with locating pin complex bush.

2. The turning attachment for the finish machining of the inner hole in the center of the impeller shaft as claimed in claim 1, wherein the gland comprises an annular cover body and a cap, a semicircular hole is formed in the outer circumferential surface of the cap, and a relief circular hole is formed in the middle of the cap.

3. The turning attachment for the finish machining of the central bore of the impeller shaft as claimed in claim 2, wherein the insertion section is externally provided with an external thread, and the annular cover body is internally provided with an internal thread which is matched with the external thread.

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