CN215392537U

CN215392537U - Multi-point normal clamping chuck

Info

Publication number: CN215392537U
Application number: CN202023132426.2U
Authority: CN
Inventors: 顾伟亮
Original assignee: Nanjing Kenmaide Machine Tool Manufacturing Co ltd
Current assignee: Nanjing Kenmaide Machine Tool Manufacturing Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2022-01-04
Anticipated expiration: 2030-12-23

Abstract

The utility model provides a multi-point normal clamping chuck which comprises a basic body cavity, wherein a plurality of piston cavities are distributed on the circumference of the basic body cavity, pistons matched with the piston cavities are arranged in the piston cavities, and tooth surface clamping pieces are arranged at the front ends of the pistons; the outer edge of the cavity of the basic body is sleeved with a sealing ring, and a power supply hole system for controlling the clamping and releasing of the tooth surface clamping piece is arranged on the sealing ring. The utility model has unique effect on double-end irregular parts and thin-wall special-shaped parts, ensures that the clamping stability and stress do not cause the parts to deform and distort, and does not generate stress deformation effect on the parts after cutting processing, thereby having decisive effect on the quality, the qualification rate and the precision of products.

Description

Multi-point normal clamping chuck

Technical Field

The utility model relates to the field of machine tool accessories, in particular to a multi-point normal clamping chuck suitable for irregular parts.

Background

In the existing machine tool accessory industry, a method for carrying out floating point clamping on a chuck accessory in a lever torque transmission mode is adopted, but the method is short in stroke, small in drift diameter or free of clearing, and particularly limited in applicability to clamped parts, and specifically comprises the following steps:

1) a common four-jaw chuck is used for clamping a workpiece, jaws are adjusted to an eccentric position, and then the workpiece is clamped, so that the workpiece is obviously not concentrically rotated any more, and an eccentric cylinder can be formed after the workpiece is cut on the circumference.

2) In the processing of the eccentric rod, the eccentricity needs to be adjusted and held for multiple times to achieve different eccentricity requirements.

3) The industrial sewing machine part is mainly an irregular part such as an eccentric wheel flywheel, and the original process is to place the industrial sewing machine part in different tools for processing so as to achieve the purpose of eccentricity.

SUMMERY OF THE UTILITY MODEL

The utility model provides a multi-point normal clamping chuck for solving the problems in the prior art, which has unique effect on double-end irregular parts and thin-wall special-shaped parts, ensures the stability of clamping and the effect of preventing the parts from deforming and twisting due to stress, and does not generate stress deformation on the parts after cutting, thereby having decisive effect on the quality, the qualification rate and the precision of products.

The utility model comprises a basic body cavity, wherein a plurality of piston cavities are distributed on the circumference of the basic body cavity, pistons matched with the piston cavities are arranged in the piston cavities, and a tooth surface clamping piece is arranged at the front end of each piston; the outer edge of the cavity of the basic body is sleeved with a sealing ring, and a power supply hole system for controlling the clamping and releasing of the tooth surface clamping piece is arranged on the sealing ring.

The improved chuck has several assembling holes distributed around the chuck and the chuck is fixed via the assembling holes to the end of the spindle.

In a further improvement, the piston cavities are distributed on the circumference of the cavity body of the basic body at equal intervals.

The utility model has the beneficial effects that:

1. the clamp has unique effect on double-end irregular parts and thin-wall irregular parts, can finish shape-following clamping on the irregular parts under the condition of a preset center, and ensures that the clamping stability and stress do not deform and distort the parts.

2. The clamping effect has no stress deformation effect on the parts after cutting, thereby having decisive effect on the quality, the qualification rate and the precision of products. On the premise of no scrap, the energy is saved, the material loss is reduced, and the cost is reduced. Can almost reach one hundred percent qualification.

Drawings

FIG. 1 is a front cross-sectional view of the present invention;

FIG. 2 is a side cross-sectional view of the present invention;

fig. 3 is a front view of the present invention.

Detailed Description

The utility model will be further explained with reference to the drawings.

The utility model is shown in figures 1 to 3, comprising a basic body cavity 1, a plurality of piston cavities 7 are distributed on the circumference of the basic body cavity 1, pistons 3 matched with the piston cavities 7 are arranged in the piston cavities 7, and tooth surface clamping pieces 4 are arranged at the front ends of the pistons 3; the outer edge of the cavity of the basic body is sleeved with a sealing ring 2, and the sealing ring 2 is provided with a power supply hole system 8 for controlling the clamping and releasing of the tooth surface clamping piece.

Further improve, distribute a plurality of pilot holes 5 on the chuck circumference, the chuck passes through the pilot hole to be fixed at any kind of main shaft terminal surface.

In the clamping process mentioned in the background art, the multi-point normal clamping chuck is used instead, the workpiece deviates from the center of a circle under the action of external force, and the non-self-centering hydraulic chuck clamps the workpiece and is naturally positioned on one side of the circle, so that the eccentric machining mode and the purpose are achieved.

In the processing of eccentric rod, thereby this non-from the processing of centering chuck possible eccentric shaft has reduced artifical proofreading, and the preparation of frock has improved the accuracy greatly, has reduced labour's input, makes its eccentric clamping of a lot of accomplish the processing of whole part.

The non-self-centering chuck is used for an industrial sewing machine part, and the purpose of eccentric machining can be achieved as long as a person or a mechanical hand is fed into a clamp according to different eccentric points and then eccentric machining is carried out.

While the utility model has been described in terms of its preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a multiple spot normal centre gripping chuck which characterized in that: the piston comprises a basic body cavity, wherein a plurality of piston cavities are distributed on the circumference of the basic body cavity, pistons matched with the piston cavities are arranged in the piston cavities, and a tooth surface clamping piece is arranged at the front end of each piston; the outer edge of the cavity of the basic body is sleeved with a sealing ring, and a power supply hole system for controlling the clamping and releasing of the tooth surface clamping piece is arranged on the sealing ring.

2. The multi-point normal grip chuck of claim 1, wherein: a plurality of assembling holes are distributed on the circumference of the chuck, and the chuck is fixed on the end surface of any main shaft through the assembling holes.

3. The multi-point normal grip chuck of claim 1, wherein: the piston cavities are distributed on the circumference of the basic body cavity at equal intervals.