CN216729625U

CN216729625U - Lathe expansion sleeve

Info

Publication number: CN216729625U
Application number: CN202123051957.3U
Authority: CN
Inventors: 史广涛
Original assignee: Shanghai Benma Precision Machinery Co ltd
Current assignee: Shanghai Benma Precision Machinery Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-06-14
Anticipated expiration: 2031-12-07

Abstract

The utility model discloses a lathe cover that rises belongs to machining clamping technical field. The adjustable clamping device comprises a base and a movable seat, wherein the movable seat is in sliding sleeve joint on the base, a plurality of annular uniformly-distributed drag hooks are fixedly connected to the top of the movable seat, a fixed seat is further arranged above the movable seat, the fixed seat is sleeved on the drag hooks, a boss of a circular table type is fixedly connected to the middle of the fixed seat, a joint expansion cylinder is sleeved on the boss, and a transmission part is jointly arranged between the expansion cylinder and the drag hooks. The utility model discloses an it fixes to stretch into the work piece hole to expand a section of thick bamboo, and the section of thick bamboo that expands outwards evenly expands when stretching into for each mating surface is hugged closely and is sealed completely, and the area of contact between an expansion section of thick bamboo and the work piece is big, and is fixed more firm, thereby can not cause the work piece to warp because of pressure is concentrated.

Description

Lathe expansion sleeve

Technical Field

The utility model relates to a lathe cover that rises belongs to machining clamping technical field.

Background

Some tubular workpieces need to be clamped and positioned by inner holes during turning, the inner holes are supported by a common three-jaw chuck or a hydraulic three-jaw chuck originally, and the inner holes are supported by the three-jaw chuck because of point contact, so that the workpieces are easy to deform due to overlarge pressure, and the influence on thin-wall parts is particularly great.

Disclosure of Invention

The utility model discloses the technical problem that will solve lies in: the lathe expansion sleeve solves the problem that an inner hole is supported by a three-jaw chuck, so that a workpiece is easily pressed too much and deformed.

The utility model discloses the technical problem that will solve takes following technical scheme to realize:

the lathe expansion sleeve comprises a base and a movable seat, the movable seat is connected with the base in a sliding mode in a sleeved mode, a plurality of drag hooks which are evenly distributed in an annular mode are fixedly connected to the top of the movable seat, a fixed seat is further arranged above the movable seat, the fixed seat is sleeved on the drag hooks, a jacking block of a circular truncated cone is fixedly connected to the middle of the fixed seat, a mutually-attached expansion cylinder is sleeved on the jacking block, and a transmission part is arranged between the expansion cylinder and the drag hooks.

As a preferred example, the transmission member is a lantern ring provided with a clamping groove inside, and the lantern ring is sleeved on the expanding cylinder and the plurality of draw hooks and is clamped with the expanding cylinder and the plurality of draw hooks.

As a preferable example, the bottom of the expansion cylinder is provided with a step, the step is clamped with the transmission part, and the step is provided with a plurality of limiting grooves.

As a preferred example, the tops of the plurality of drag hooks are fixedly connected with limit columns, and the limit columns are respectively matched with the limit grooves.

As a preferred example, the drag hook is provided with at least three drag hooks.

As a preferable example, the device also comprises a cover shell which is sleeved on the expansion cylinder and covers the transmission part and the draw hook.

As a preferred example, the cover is provided with an airtight hole.

The beneficial effects of the utility model are that:

1. the utility model discloses an it fixes to stretch into the work piece hole to expand a section of thick bamboo, and the section of thick bamboo that expands outwards evenly expands when stretching into for each mating surface is hugged closely and is sealed completely, and the area of contact between an expansion section of thick bamboo and the work piece is big, and is fixed more firm, thereby can not cause the work piece to warp because of pressure is concentrated.

2. The utility model discloses a drag hook is global design, and a plurality of drag hooks make single drag hook atress littleer along same circle evenly distributed, make the intensity and the life increase of part.

3. The utility model discloses a drag hook can be according to the size of the cover size adjustment drag hook place circle that rises, can adjust the radius of driving medium simultaneously, can the most radial cover that rises of adaptation.

Drawings

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

fig. 2 is a schematic sectional structure of the present invention;

FIG. 3 is a schematic view of the retractor;

fig. 4 is a schematic view of a connection structure of the limiting column and the expanding cylinder.

In the figure: the device comprises a base 1, a movable seat 2, a fixed seat 3, a housing 4, an expansion cylinder 5, a top block 6, a transmission part 7, a draw hook 8, a limit column 9 and an airtight hole 10.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand and understand, the present invention is further explained by combining the following specific drawings.

As shown in fig. 1-4, the lathe cover that rises, including base 1 and sliding seat 2, base 1 fixes on the workstation, sliding seat 2 slides on base 1 and cup joints, and the bottom of sliding seat 2 is connected with actuating mechanism, such as the cylinder, the hydro-cylinder etc., the top fixedly connected with of sliding seat 2 has a plurality of annular evenly distributed's drag hook 8, the top of sliding seat 2 still is provided with fixing base 3, do not have the relation of connection between fixing base 3 and the sliding seat 2, and fixing base 3 is also fixed mounting on the workstation, namely sliding seat 2 reciprocates between base 1 and fixing base 3, fixing base 3 covers is established on a plurality of drag hooks 8, and intermediate position fixedly connected with top block 6 of round platform type, the cover is equipped with the section of thick bamboo 5 that rises that laminates mutually on top block 6, it is provided with driving medium 7 to rise between section of thick bamboo 5 and the drag hook 8 jointly.

The driving medium 7 is the lantern ring that inside was provided with the draw-in groove, and the lantern ring cover is established on section of thick bamboo 5 and a plurality of drag hook 8 that rises, and with section of thick bamboo 5 and a plurality of drag hook 8 looks joint that rises.

The bottom of section of thick bamboo 5 that rises is provided with the step, and step and driving medium 7 looks joints, and has seted up a plurality of spacing grooves on the step, the equal fixedly connected with spacing post 9 in top of a plurality of drag hooks 8, a plurality of spacing posts 9 respectively with a plurality of spacing groove phase-matches, spacing post 9 card can prevent in the spacing groove that rises section of thick bamboo 5 and rotate.

The drag hook 8 is provided with three at least, and drag hook 8 makes single drag hook 8 atress littleer along same circle evenly distributed, makes the intensity and the life increase of part.

The device also comprises a housing 4, wherein the housing 4 is sleeved on the expansion cylinder 5 and covers the transmission part 7 and the draw hook 8.

The housing 4 is provided with an airtight hole 10 for checking airtightness between the workpiece and the expansion cylinder 5 when the workpiece is mounted on the expansion cylinder.

The working principle is as follows: when the workpiece clamping device is used, a workpiece is sleeved on the expansion cylinder 5, then the movable seat 2 is driven to descend to drive the drag hook 8 to descend, the drag hook 8 descends to drive the expansion cylinder 5 to descend through the transmission part 7, the inner wall of the expansion cylinder 5 is abutted to the inclined plane of the ejection block 6, so that the expansion cylinder 5 uniformly expands outwards to clamp the workpiece, after the workpiece is machined, the drag hook 8 ascends to push the expansion cylinder 5 to ascend to separate from the ejection block 6, the expansion cylinder 5 is loosened, and the workpiece is taken away.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Lathe cover that rises includes base (1) and sliding seat (2), its characterized in that: sliding sleeve joint on base (1) sliding sleeve joint of sliding seat (2), a plurality of annular evenly distributed's of top fixedly connected with drag hook (8) of sliding seat (2), the top of sliding seat (2) still is provided with fixing base (3), fixing base (3) cover is established on a plurality of drag hooks (8), and intermediate position fixedly connected with round platform type kicking block (6), the cover is equipped with the section of thick bamboo (5) that rises that laminates mutually on kicking block (6), it is provided with driving medium (7) jointly to rise between section of thick bamboo (5) and drag hook (8).

2. The lathe expansion sleeve as claimed in claim 1, wherein: the driving medium (7) is a lantern ring with a clamping groove arranged inside, the lantern ring is sleeved on the expansion cylinder (5) and the drag hooks (8) and is connected with the expansion cylinder (5) and the drag hooks (8) in a clamped mode.

3. The lathe expansion sleeve as claimed in claim 1, wherein: the bottom of the expansion cylinder (5) is provided with a step, the step is clamped with the transmission part (7), and the step is provided with a plurality of limiting grooves.

4. The lathe expansion sleeve as claimed in claim 3, wherein: a plurality of the top of the draw hook (8) is fixedly connected with a limit column (9) and a plurality of the limit columns (9) are respectively matched with a plurality of limit grooves.

5. The lathe expansion sleeve as claimed in claim 1, wherein: the number of the draw hooks (8) is at least three.

6. The lathe expansion sleeve as claimed in claim 1, wherein: the device is characterized by further comprising a housing (4), wherein the housing (4) is sleeved on the expansion cylinder (5) and covers the transmission part (7) and the draw hook (8).

7. The lathe expansion sleeve as claimed in claim 6, wherein: and the housing (4) is provided with an airtight hole (10).