CN212444260U

CN212444260U - Machine tool positioning fixture

Info

Publication number: CN212444260U
Application number: CN202020206035.1U
Authority: CN
Inventors: 龚庆斌
Original assignee: Shangjiahao Hardware Shenzhen Co ltd
Current assignee: Shangjiahao Hardware Shenzhen Co ltd
Priority date: 2020-02-24
Filing date: 2020-02-24
Publication date: 2021-02-02
Anticipated expiration: 2030-02-24

Abstract

The utility model relates to the technical field of machine tool fixtures, in particular to a machine tool positioning fixture, which comprises a base, a sleeve ring and an expansion column, wherein one end of the sleeve ring is fixedly arranged on the base, the sleeve ring radially penetrates a plurality of clamping components for clamping pipes, the expansion column comprises a threaded rod, expansion sheets and a sleeve ring, the base is provided with a threaded hole, the threaded rod penetrates in the threaded hole, one end of the threaded rod, which is positioned at the inner side of the base, is sleeved with the sleeve ring, one end of each expansion sheet is rotatably connected with the outer side wall of the sleeve ring, the expansion sheets are uniformly distributed on the outer side wall of the sleeve ring, the inner side of the base is provided with an inner ring which is coaxial with; the plurality of clamping components apply pressure to the outer wall of the tubular part, and the expansion sheet expands outwards and applies pressure to the inner wall of the tubular part, so that the inner wall and the outer wall of the tubular part are stressed simultaneously, and the deformation of the tubular part is avoided; and because the adjustability of inflation piece makes the utility model discloses can adapt to the tubular part of multiple tube wall thickness.

Description

Machine tool positioning fixture

Technical Field

The utility model relates to a machine tool fixture technical field specifically is a machine tool positioning fixture.

Background

A machine tool holder is a device on a machine tool for holding a workpiece and guiding a tool. Which is a jig specially designed for a certain process of a certain workpiece. Its advantages are compact structure, quick and convenient operation, saving labour and high machining precision and productivity.

The existing tubular part processed by a machine tool generally adopts a clamping block to apply pressure to the outer side wall of the tubular part when clamping so as to achieve the purpose of fixing, but because the clamping block is separated, part of the outer side wall of the tubular part can not be directly contacted with the clamping block during clamping, so that the stress of the tubular part is uneven, and the part is easy to deform; meanwhile, the thickness of the pipe wall of the tubular part is different, so that the existing clamp can hardly adapt to the tubular parts with different pipe wall thicknesses.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a machine tool positioning fixture, which can apply pressure from the inner and outer sidewalls of a tubular part when clamping the tubular part, so that the fixture can fix the tubular part without causing deformation of the tubular part; and tubular parts with various tube wall thicknesses can be fixed at the same time.

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

the utility model discloses a machine tool positioning fixture, including base, the lantern ring and inflation post, the one end of the lantern ring is fixed to be set up on the base, the lantern ring radially wears to penetrate a plurality of chucking parts that are used for chucking tubular product, the inflation post includes threaded rod, inflation piece and lasso, the base is equipped with the coaxial screw hole of the lantern ring, the threaded rod wears to penetrate in the threaded hole, being in of threaded rod the inboard pot head of base is established the lasso, the one end of inflation piece with the lateral wall of lasso rotates to be connected, the polylith the inflation piece evenly distributed is in on the lateral wall of lasso, the inboard of base be equipped with the coaxial inner ring of screw hole, the end of inner ring with the inboard butt of inflation piece.

Further, the lantern ring evenly sets up a plurality of radial screw holes along the circumferencial direction, chucking part includes order fixed connection's chucking piece, lead screw and twist the pole, the lead screw with radial screw hole cooperation is connected, the chucking piece sets up the inside of the lantern ring, twist the pole setting and be in the outside of the lantern ring, the lateral wall of twisting the pole is equipped with axial anti-skidding tooth trace.

Further, the outer side surface of the expansion sheet is an arc surface.

Furthermore, one end of the threaded rod, which is positioned on the inner side of the base, is provided with a stop piece for limiting the ferrule, and the other end of the threaded rod is provided with a pulling rod perpendicular to the threaded rod.

Further, the tail end of the inner ring is subjected to fillet treatment.

The utility model has the advantages that: the utility model discloses a machine tool positioning fixture, exert pressure to the outer wall of tubulose part through a plurality of chucking parts, make the threaded rod axial move through rotating the threaded rod simultaneously, thereby make the inflation piece move towards the inner ring direction, thereby change the butt position of inflation piece inboard and lantern ring end, make the inflation piece end outwards expand and exert pressure to the inner wall of tubulose part, make the interior outer wall of tubulose part atress simultaneously, avoid the tubulose part to warp; and because the adjustability of inflation piece makes the utility model discloses can adapt to the tubular part of multiple tube wall thickness.

Drawings

The invention will be further described with reference to the following figures and examples:

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

fig. 2 is a front view of the structure of the present invention;

FIG. 3 is a side view of the structure of the present invention;

FIG. 4 is a side cross-sectional view of the structure of the present invention;

the reference numbers are as follows: 1-base, 2-lantern ring, 3-expansion column, 21-clamping block, 22-screw rod, 23-screwing rod, 24-radial threaded hole, 31-threaded rod, 32-expansion piece, 33-ferrule, 311-stop piece and 312-pulling rod.

Detailed Description

As shown in fig. 1-4: the utility model provides a machine tool positioning fixture, including base 1, the lantern ring 2 and expansion column 3, the one end of the lantern ring 2 is fixed to be set up on base 1, lantern ring 2 radially wears to penetrate a plurality of chucking parts that are used for chucking tubular product, expansion column 3 includes threaded rod 31, expansion piece 32 and lasso 33, base 1 is equipped with the coaxial screw hole of the lantern ring 2, threaded rod 31 wears to penetrate in the threaded hole, the lasso 33 is established to the pot head that is in base 1 inboard of threaded rod 31, the one end of expansion piece 32 rotates with the lateral wall of lasso 33 to be connected, polylith expansion piece 32 evenly distributed is on the lateral wall of lasso 33, base 1's inboard is equipped with the inner ring coaxial with the screw hole, the terminal of inner ring and the inboard butt of expansion piece.

In the utility model, the expansion column 3 is arranged inside the tubular part, pressure is applied to the outer wall of the tubular part through a plurality of clamping components, and meanwhile, the threaded rod 31 is axially moved through rotating the threaded rod 31, so that the expansion sheet 32 moves towards the inner ring direction, the abutting position between the inner side of the expansion sheet 32 and the end of the sleeve ring 2 is changed, the end of the expansion sheet 32 expands outwards and applies pressure to the inner wall of the tubular part, the inner wall and the outer wall of the tubular part can be stressed simultaneously, and the deformation of the tubular part is avoided; and because the adjustability of inflation piece 32 makes the utility model discloses can adapt to the tubular part of multiple tube wall thickness.

In this embodiment, the lantern ring 2 evenly sets up a plurality of radial screw holes 24 along the circumferencial direction, chucking part includes order fixed connection's chucking piece 21, lead screw 22 and twist pole 23, lead screw 22 is connected with the cooperation of radial screw hole 24, chucking piece 21 sets up the inside at the lantern ring 2, twist pole 23 and set up the outside at the lantern ring 2, the lateral wall of twisting pole 23 is equipped with axial anti-skidding tooth trace, twist pole 23 through twisting and make the medial surface of chucking piece 21 and the lateral wall butt of tubular part, and exert pressure to the lateral wall of tubular part.

In this embodiment, the outer side surface of the expansion sheet 32 is an arc surface, and since the outer side surface of the expansion sheet 32 is directly abutted to the inner wall of the tubular part, in order to avoid deformation of the tubular part caused by the edge of the expansion sheet 32 pressing against the inner wall of the tubular part, the outer side surface of the expansion sheet 32 is polished to the arc surface to protect the tubular part.

In this embodiment, a stop piece 311 for limiting the ferrule 33 is disposed at one end of the threaded rod 31 located inside the base 1, a pulling rod 312 perpendicular to the threaded rod 31 is disposed at the other end of the threaded rod 31, and the pulling rod 312 is manually pulled to drive the threaded rod 31, or a motor is used to drive the threaded rod 31, so that the rotating shaft of the electrode is coaxially and fixedly connected to the threaded rod 31.

In this embodiment, the terminal fillet of carrying on of inner ring is handled, avoids the terminal edge of inner ring to scrape the medial surface of bad inflation piece 32, also can make the relative slip of inflation piece 32 and inner ring more smooth and easy simultaneously.

The specific implementation process is as follows:

when the utility model is used, the pulling rod 312 is pulled to move the threaded rod 31 to the inner side, so that the abutting position of the expansion piece 32 and the inner ring is far away from the rotating position of the expansion piece 32, and the expansion piece 32 can rotate to the more inner side;

sleeving the tubular part on the expansion sheet 32, screwing the screwing rod 23, and enabling the clamping block 21 to be abutted against and fixed on the outer wall of the tubular part under the action of the screw rod 22 and the radial threaded hole 24;

pulling the pulling rod 312 to move the threaded rod 31 to the outside, so that the abutting position of the expansion piece 32 and the inner ring is close to the rotating position of the expansion piece 32, the tail end of the expansion piece 32 expands outwards and abuts against the inner wall of the tubular part, and the pulling rod 312 is pulled continuously until a large resistance force is generated to fix the tubular part.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. The utility model provides a lathe positioning fixture which characterized in that: including base, the lantern ring and inflation post, the one end of the lantern ring is fixed to be set up on the base, the lantern ring radially wears to penetrate a plurality of chucking parts that are used for chucking tubular product, the inflation post includes threaded rod, inflation piece and lasso, the base is equipped with the coaxial screw hole of the lantern ring, the threaded rod wears to penetrate in the threaded hole, the threaded rod be in the inboard pot head of base is established the lasso, the one end of inflation piece with the lateral wall of lasso rotates to be connected, the polylith the inflation piece evenly distributed is in on the lateral wall of lasso, the inboard of base be equipped with the coaxial inner ring of screw hole, the end of inner ring with the inboard butt of inflation piece.

2. The machine tool positioning jig of claim 1, wherein: the lantern ring evenly sets up a plurality of radial screw holes along the circumferencial direction, the chucking part includes order fixed connection's chucking piece, lead screw and twist the pole, the lead screw with radial screw hole cooperation is connected, the chucking piece sets up the inside of the lantern ring, it is in to twist the pole setting the outside of the lantern ring, the lateral wall of twisting the pole is equipped with axial anti-skidding tooth trace.

3. The machine tool positioning jig of claim 1, wherein: the outer side surface of the expansion sheet is a cambered surface.

4. The machine tool positioning jig of claim 1, wherein: one end of the threaded rod, which is positioned on the inner side of the base, is provided with a stop sheet for limiting the ferrule, and the other end of the threaded rod is provided with a pulling rod perpendicular to the threaded rod.

5. The machine tool positioning jig of claim 1, wherein: and the tail end of the inner ring is subjected to fillet treatment.