CN210281387U

CN210281387U - Thin-wall workpiece clamping and inner-sliding mechanism

Info

Publication number: CN210281387U
Application number: CN201920699040.8U
Authority: CN
Inventors: 张瑞洋
Original assignee: Kunshan Daiyi Precision Machinery Co Ltd
Current assignee: Kunshan Daiyi Precision Machinery Co Ltd
Priority date: 2019-05-16
Filing date: 2019-05-16
Publication date: 2020-04-10
Anticipated expiration: 2029-05-16

Abstract

The utility model provides a thin-wall workpiece clamping and installing internal sliding mechanism, which comprises a positioning ring, wherein an internal sliding block is arranged at the inner side of the positioning ring, the internal sliding block comprises an annular block body, 3 groups of contraction pull grooves are uniformly arranged on the annular block body, and a pushing surface is arranged between every two adjacent contraction pull grooves; the inner circumference of the positioning ring is provided with 6 through holes, and contraction blocks and expansion blocks are alternately arranged in the through holes; the shrink kerve drives the shrink piece slides to the holding ring centre of a circle, the promotion face drives the direction motion of the centre of a circle is kept away from to the location hoop to the expansion piece, and this mechanism is through the inner sliding sleeve that sets up and the shrink piece and the expansion piece of mutually supporting, once slides through the inner sliding sleeve, can realize a plurality of shrink pieces simultaneously inwards shrink simultaneously, and the expansion piece outwards expands simultaneously, presss from both sides the work piece fast tightly.

Description

Thin-wall workpiece clamping and inner-sliding mechanism

Technical Field

The utility model relates to a machining equipment field especially relates to thin wall work piece presss from both sides dress internal sliding mechanism.

Background

The product structure shown in fig. 1 is a bowl-shaped structure, and the reason that the processing is difficult in the early stage is as follows: 1. the single inner expansion outer measurement is characterized in that the product belongs to a thin-wall part, and the product is shaped and deformed by expansion to generate an ellipse and an irregularity. 2. The single clamp is tight inboard, and the product turning product resonance ripple, the product is oval great, and the noise is too big in the product course of working, and the cutter easily wears and ages, and in the anchor clamps of prior art, is difficult to realize two-way clamp and rises tightly.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an inner sliding mechanism for clamping a thin-wall workpiece, which comprises a positioning ring, wherein an inner sliding block is arranged at the inner side of the positioning ring, the inner sliding block comprises an annular block body, 3 groups of contraction pull grooves are uniformly arranged on the annular block body, and a pushing surface is arranged between the adjacent contraction pull grooves; the inner circumference of the positioning ring is provided with 6 through holes, and contraction blocks and expansion blocks are alternately arranged in the through holes; the contraction pull groove drives the contraction block to slide towards the center of the positioning ring, and the pushing surface drives the expansion block to move towards the positioning ring towards the direction far away from the center of the positioning ring;

the shrink pull groove comprises a square cut, guide convex blocks are oppositely arranged on two sides in the square cut, the guide convex blocks are obliquely arranged, the bottoms of the guide convex blocks point to the inner sides of the annular blocks, a tangent plane parallel to the lower inclined plane of each guide convex block is arranged at the bottom of the square cut, and a channel is arranged between the tangent plane and the lower inclined plane.

The pushing surface is a chamfer inclined to the outer side of the positioning ring on the circumference of the top of the positioning ring.

Preferably, the contraction block comprises a first cylindrical body, an arc-shaped surface is arranged at the end part of the first cylindrical body, and anti-skid lines are arranged on the arc-shaped surface; the two sides of the first cylindrical body are provided with sliding grooves which are obliquely arranged, and the sliding grooves are oblique to the direction of the arc-shaped surface.

Preferably, the expansion block comprises a second cylindrical body, a wedge-shaped surface is arranged at one end of the second cylindrical body, and the wedge-shaped surface presses on the pushing surface.

Preferably, the edge of the tail end of the expansion block is provided with an arc-shaped surface.

The utility model provides a thin wall work piece presss from both sides dress internal slip mechanism has following beneficial effect: this mechanism is through the inner sliding sleeve that sets up and the shrink piece and the expansion piece of mutually supporting, once slides through the inner sliding sleeve, can realize a plurality of shrink pieces simultaneously inwards shrink simultaneously, and the expansion piece outwards expands simultaneously, presss from both sides the work piece fast tightly.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

FIG. 1 is a schematic view of a thin-walled bowl-shaped workpiece of the prior art;

fig. 2 is a schematic perspective view of the present invention;

fig. 3 is a schematic view of the inner slide block of the present invention;

FIG. 4 is a schematic view of the connection between the inner slide block and the contraction block and the expansion block of the present invention;

fig. 5 is a schematic view of the shrinking block of the present invention;

FIG. 6 is a schematic view of the expansion block of the present invention;

wherein, 1, a positioning ring; 2. an inner slide block; 3. an annular block; 4. shrinking the pull groove; 5. pushing the surface; 6. a contraction block; 7. an expansion block; 8. a square cut; 9. a guide projection; 10. cutting into noodles; 11. a channel; 12. a first cylindrical body; 13. anti-skid lines; 14. a chute; 15. a second cylindrical body; 16. a wedge-shaped surface; 17. an arc-shaped surface.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 2, the utility model provides an inner slide mechanism for clamping a thin-wall workpiece, which comprises a positioning ring 1, wherein an inner slide block 2 is arranged at the inner side of the positioning ring 1, the inner slide block 2 and the positioning ring 1 are concentrically arranged, and the outer wall of the inner slide block 2 is attached to the inner part of the positioning ring 1; the inner circumference of the positioning ring 1 is provided with 6 through holes, and contraction blocks 6 and expansion blocks 7 are alternately arranged in the through holes; the contraction pull groove 4 drives the contraction block 6 to slide towards the center of the positioning ring 1, and the pushing surface 5 drives the expansion block 7 to move towards the positioning ring 1 in the direction away from the center of the circle;

as shown in fig. 3, the inner slide block 2 includes an annular block 3, 3 groups of contraction pull grooves 4 are uniformly arranged on the annular block 3, specifically, the contraction pull grooves 4 include square notches 8, guide convex blocks 9 are oppositely arranged on two sides in the square notches 8, the guide convex blocks 9 are obliquely arranged and the bottoms of the guide convex blocks are directed on the inner side of the annular block 3, a tangent plane 10 parallel to the lower inclined plane of the guide convex blocks 9 is arranged at the bottom of the square notches 8, a channel 11 is arranged between the tangent plane 10 and the lower inclined plane, and a cutting groove is also arranged on the upper portion of each guide convex block 9, so that the upper portion and the lower portion of each guide convex block 9 are provided with two inclined planes which can be matched with two sides of: the contraction block 6 comprises a first cylindrical body 12, an arc-shaped surface 17 is arranged at the end part of the first cylindrical body 12, and anti-skid grains 13 are arranged on the arc-shaped surface 17; the oblique sliding grooves 14 are arranged on two sides of the first cylindrical body, the sliding grooves 14 are oblique towards the direction of the arc-shaped surface 17, the guide convex blocks 9 are clamped in the sliding grooves 14 and can slide in the sliding grooves 14, when the inner sliding block 2 slides in the axial direction of the positioning ring 1, the oblique sliding grooves 14 can drive the contraction blocks 6 to slide towards the circle center of the positioning ring 1, so that the effect of clamping the central part of a workpiece can be realized,

and when will realize having the effect that rises simultaneously, expansion piece 7 includes second cylindrical body 15, second cylindrical body 15 one end is equipped with wedge face 16, wedge face 16 press in push away on the face 5, second cylindrical body 15 is in the through-hole of holding ring 1 to wedge face 16 presses on push away face 5, when interior slider 2 slides, promotes second cylindrical body 15 is to the motion in the 1 outside of holding ring, 7 terminal edges of expansion piece are equipped with arcwall face 17, can stretch out holding ring 1, can rise tightly to the work piece outside, will be more even application of force for the outside, can set up annular rubber circle etc..

While the through-hole of the positioning ring 1 can define the sliding path of the contraction block 6 and the expansion block 7, preventing the deviation.

The positioning of a double-layer annular thin-walled workpiece can be realized by the mechanism, and is not limited to the element in fig. 1, and the inner sliding block 2 is positioned on the inner wall of the positioning ring 1 and is lower than a plurality of contraction blocks 6 and expansion blocks 7 in the initial state.

Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The thin-wall workpiece clamping and inner sliding mechanism is characterized by comprising a positioning ring, wherein an inner sliding block is arranged on the inner side of the positioning ring, the inner sliding block comprises an annular block body, 3 groups of contraction pull grooves are uniformly arranged on the annular block body, and a pushing surface is arranged between every two adjacent contraction pull grooves; the inner circumference of the positioning ring is provided with 6 through holes, and contraction blocks and expansion blocks are alternately arranged in the through holes; the contraction pull groove drives the contraction block to slide towards the center of the positioning ring, and the pushing surface drives the expansion block to move towards the positioning ring towards the direction far away from the center of the positioning ring;

the shrink kerve includes square incision, both sides are provided with the direction lug relatively in the square incision, the slope of direction lug sets up and the bottom is directional annular block is inboard, square incision bottom be equipped with the parallel tangent plane of the lower inclined plane of direction lug, the tangent plane with there is the passageway down between the inclined plane, push away the scarf to the inclined plane in the holding ring outside on the circumference at holding ring top.

2. The thin-walled workpiece clamping and inward sliding mechanism according to claim 1, wherein the contraction block comprises a first cylindrical body, an arc-shaped surface is arranged at the end part of the first cylindrical body, and anti-sliding grains are arranged on the arc-shaped surface; the two sides of the first cylindrical body are provided with sliding grooves which are obliquely arranged, and the sliding grooves are oblique to the direction of the arc-shaped surface.

3. The thin-walled workpiece clamping and inward sliding mechanism according to claim 1, wherein the expansion block comprises a second cylindrical body, one end of the second cylindrical body is provided with a wedge-shaped surface, and the wedge-shaped surface presses the pushing surface.

4. The thin-walled workpiece clamping and inward sliding mechanism according to claim 3, wherein the end edge of the expansion block is provided with an arc-shaped surface.