CN204355819U - A kind of rolling arm chuck - Google Patents

Abstract

The utility model relates to a kind of rolling arm chuck, belong to chuck technical field, described rolling arm chuck mainly comprises Ka Gai, telescopic block, hexagon socket countersunk flat cap head screw, deck, bearing, cam, expanding pulley, axle, described axle is provided with bearing, deck, cam, Ka Gai successively, the outer of described bearing is provided with deck, one end of cam is connected with bearing, the other end is connected with Ka Gai, the outer of described cam is provided with expanding pulley, the outer of expanding pulley is provided with telescopic block, and described hexagon socket countersunk flat cap head screw connects deck and Ka Gai; The utility model is to increase the thickness of chuck telescopic block, make the outside face of telescopic block concordant with card exterior surface, rigid contact is utilized to increase pressure to improve friction force, actv. avoids the use of polyurethane tape in process of production, solve polyurethane tape easy to wear, the difficult problem changed, adopt the thickness increasing telescopic block to replace polyurethane tape, chuck practicality is stronger, cost is lower, longer service life.

Description

A kind of rolling arm chuck

Technical field

The utility model belongs to chuck technical field, specifically, relates to a kind of rolling arm chuck.

Background technology

Mostly need to use chuck in the use procedure of lathe at present, particularly on the rolling arm of plastic cement job shop, rolling arm is due to the weight more than needing to bear tonne, so chuck needs the friction force that provides very large, the chuck used in the past, make the telescopic block of chuck and toothholder surface form groove, groove installs polyurethane tape, stretched out by telescopic block and prop up polyurethane tape, be fixedly mounted on rolling arm, because polyurethane tape in use easily weares and teares, basic once week need change a polyurethane tape, because rolling arm is mounted on lathe, weight is also very large, thus the replacing of polyurethane tape is difficult to, and cost higher (the cost of polyurethane tape is more than 100 yuans), so traditional chuck uses trouble, poor practicability, cost is high.

Therefore, be necessary to improve existing chuck, to improve in-use performance, reduce costs, improve Workshop Production efficiency.

Summary of the invention

For overcoming Problems existing in background technology, the utility model proposes a kind of rolling arm chuck, by increasing the thickness of telescopic block, telescopic block and rolling arm rigid contact increasing friction force are clamped, solve existing chuck and polyurethane tape increase friction force clamping is installed in its telescopic block, poor practicability, the problem that cost is high.

For achieving the above object, the utility model is achieved by the following technical solution: described rolling arm chuck mainly comprises card lid 1, telescopic block 2, hexagon socket countersunk flat cap head screw 3, deck 4, bearing 5, cam 6, expanding pulley 7, axle 8, described axle 8 is provided with bearing 5 successively, deck 4, cam 6, card lid 1, the outer of described bearing 5 is provided with deck 4, one end of cam 6 is connected with bearing 5, the other end is connected with card lid 1, the outer of described cam 6 is provided with expanding pulley 7, the outer of expanding pulley 7 is provided with telescopic block 2, described hexagon socket countersunk flat cap head screw 3 connects deck 4 and card lid 1.

The outside face of described telescopic block 2 and the flush with outer surface of card lid 1.

Described cam 6 is triangular cam, cam 6 has three projections.

The beneficial effects of the utility model:

1. the utility model is to increase the thickness of chuck telescopic block, make the thickness of telescopic block concordant with card lid post surface, utilize rigid contact to improve friction force, actv. avoids the use of polyurethane tape in process of production, solve polyurethane tape easy to wear, the difficult problem changed.

2. adopt the thickness increasing telescopic block to replace polyurethane tape, chuck practicality is stronger, cost is lower, longer service life.

3. adopt triangular cam, the power that chuck can be made to bear is uniformly distributed.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is left view of the present utility model;

Fig. 3 is legacy card dish constitution diagram;

Fig. 4 is that polyurethane tape state figure installed by traditional chuck;

Fig. 5 is that after polyurethane tape installed by traditional chuck, telescopic block stretches out constitution diagram;

Fig. 6 is constitution diagram after traditional chuck improves;

Fig. 7 is that after traditional chuck improves, telescopic block stretches out constitution diagram;

Fig. 8 is telescopic boom chuck and telescopic boom assembly drowing.

In figure, 1-Ka Gai, 2-telescopic block, 3-hexagon socket countersunk flat cap head screw, 4-deck, 5-bearing, 6-cam, 7-expanding pulley, 8-axle, 9-polyurethane tape, 10-rolling arm.

Detailed description of the invention

In order to make the purpose of this utility model, technical scheme and beneficial effect clearly, below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to facilitate the technical staff to understand.

As shown in figures 1-8, the utility model discloses a kind of rolling arm chuck, described rolling arm chuck mainly comprises card lid 1, telescopic block 2, hexagon socket countersunk flat cap head screw 3, deck 4, bearing 5, cam 6, expanding pulley 7, axle 8, described axle 8 is provided with bearing 5 successively, deck 4, cam 6, card lid 1, the outer of described bearing 5 is provided with deck 4, one end of cam 6 is connected with bearing 5, bearing 5 prevents axle 8 from doing axially and radial movement, cam 6 is located on axle 8 by bearing 5, the other end of cam 6 is connected with card lid 1, the outer of described cam 6 is provided with expanding pulley 7, the outer of expanding pulley 7 is provided with telescopic block 2, cam 6 jack-up expanding pulley 7, expanding pulley 7 jack-up telescopic block 2, be connected with rolling arm 10 by telescopic block 2, described hexagon socket countersunk flat cap head screw 3 connects deck 4 and card lid 1.

The outside face of described telescopic block 2 and the flush with outer surface of card lid 1, utilize rigid contact to improve friction force, actv. avoids the use of polyurethane tape 9 in process of production.

Described cam 6 is triangular cam, cam 6 has three projections, and adopt triangular cam, the power that chuck can be made to bear is uniformly distributed.

Working process of the present utility model and actual effect:

Turn cam 6, protruding jack-up expanding pulley 7 on cam 6, expanding pulley 7 ejects telescopic block 2, its outside face and rolling arm 10 rigid contact after telescopic block 2 is ejected, although, telescopic block 2 directly contacts with rolling arm 10, friction coefficient is large not as polyurethane tape 9, but, due to telescopic block 2 and rolling arm 10 rigid contact, there is not deformation, what utilize rigid contact to produce is suppress increasing friction force, make telescopic block 2 in use can with rolling arm 10 good contact, do not skid, or loosen, telescopic block 2 and the contact of rolling arm 10 can provide enough friction force to drive the rolling arm 10 of tonne weight to rotate, actv. avoids the use of polyurethane tape 9, solve polyurethane tape 9 easy to wear, not easily change, the problem that cost is high, good result of use is achieved in actual production process.

The utility model is to increase the thickness of chuck telescopic block, make the thickness of telescopic block concordant with card lid post surface, utilize rigid contact to improve friction force, actv. avoids the use of polyurethane tape in process of production, solve polyurethane tape easy to wear, the difficult problem changed; Adopt the thickness increasing telescopic block to replace polyurethane tape, chuck practicality is stronger, cost is lower, longer service life; Adopt triangular cam, the power that chuck can be made to bear is uniformly distributed.

What finally illustrate is, above preferred embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model by above preferred embodiment, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from the utility model claims limited range.

Claims (3)

1. a rolling arm chuck, is characterized in that: described rolling arm chuck mainly comprises Ka Gai, telescopic block, hexagon socket countersunk flat cap head screw, deck, bearing, cam, expanding pulley and axle; Described axle is provided with bearing, deck, cam, Ka Gai successively, the outer of described bearing is provided with deck, one end of cam is connected with bearing, the other end is connected with Ka Gai, the outer of described cam is provided with expanding pulley, the outer of expanding pulley is provided with telescopic block, and described hexagon socket countersunk flat cap head screw connects deck and Ka Gai.

2. a kind of rolling arm chuck as claimed in claim 1, is characterized in that: the outside face of described telescopic block and the flush with outer surface of Ka Gai.

3. a kind of rolling arm chuck as claimed in claim 1, is characterized in that: described cam is triangular cam cam having three projections.