CN201070682Y

CN201070682Y - Modified type three-jaw self-centering chuck

Info

Publication number: CN201070682Y
Application number: CNU200620028135XU
Authority: CN
Inventors: 柴长青
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-12
Filing date: 2006-01-12
Publication date: 2008-06-11
Anticipated expiration: 2016-01-12

Abstract

The utility model relates to an improved three-jaw automatic centering chuck. Based on the prior three-jaw automatic centering chuck, an excircle is improved into the excircle with a crumb and powder discharge hole which is arranged in a through cavity. A cavity inner hole is improved into a cone hole, but the place which is 20 millimeters away from an end surface of the excircle is not included. Three holes in the through cavity are arranged on one end surface of one end of three clamp claws, and a rubber ring is arranged on a spigot of one end surface of the excircle in the cavity of the chuck. Compared with the prior three-jaw automatic centering chuck, first, with utilizing the crumb and powder discharge hole, crumb and powder in the cavity (the crumb and the powder are generated by cutting a turning tool when processing and casting) can be eliminated on a lathe without dismounting the chunk; secondly, with utilizing the three fabrication holes on the end surface, the big bevel gear can be dismounted smoothly when the chuck is dismounted; thirdly, the rubber ring is used for sealing and being connected with the middle part of one end surface of a flange plate, for replacing a dust cover which has poor dust proof effect. The shape and the size of the utility model are equal to the prior three-jaw automatic centering chuck, and the improved parts are simple and practical.

Description

The modified scroll chuck

Affiliated technical field

The utility model relates to the modified scroll chuck in a kind of machine tool accessories field.

Background technology

At present, known scroll chuck is in mechanical processing process, especially on lathe during the processing metal foundry goods, owing to can not use cooling fluid, so the bits powder (smear metal in small, broken bits and dust) that lathe tool downcuts is easy to enter in the chamber from the gap of the flat thread of chuck; If the batch machining foundry goods, the bits powder that enters in the chuck chamber runs up to a certain degree soon, makes big small conical gear " stuck ", and three claws are degree of tightness normally, and the operator is helpless to have to tear open chuck to remove the bits powder.Since untimely removing bits powder, often " in spite of illness " operation of chuck, serious wear, the operator is wasted time and energy.This have only the dismounting chuck could remove the bits powder, is an existing big deficiency of known scroll chuck.

Second deficiency is: need keep in repair as chuck and change part or " filled in dead " by break flour, three-jaw can not normally move, and when chuck must be dismantled, pulls down the large conical gear utmost point and is not easy, and has no way of doing it.

The 3rd weak point is the dustproof weak effect of now known dust cap.

Summary of the invention

In order to overcome three kinds of deficiencies of known scroll chuck now, the utility model provides a kind of modified scroll chuck.

The technical scheme in the invention for solving the technical problem is: the utility model is on existing known scroll chuck basis, its cylindrical is improved to hole in the cavity, 20 millimeters of the centre-to-centre spacing outer faces in hole, the hole is considered the powder hole to be worth doing for discharging bits powder usefulness, be called to discharge; It is 1: 50 circular cone body opening that the chamber endoporus is improved to tapering, but does not comprise 20 millimeters places apart from the outer face, and this can make the bits powder concentrate to the cone great circle in rotation, and discharge in the discharge bits powder hole on the quick circumference from then on; On the chuck end face of three claws, one end, be improved to 3 holes that are distributed in the cavity between the claw, the flat thread on the large conical gear of hole in the chamber, this 3 hole is to use for dismounting large conical gear smoothly; Be installed on the end face seam of chuck chamber inside and outside circle with oil-resistant rubber ring besides, in the middle of the end face of sealing and flange connecting dish, replace the dust cap of dustproof weak effect.

The beneficial effects of the utility model are: the utility model has prolonged the normal life cycle of scroll chuck, be convenient to the dismounting maintenance, reduced the heavy wear of each parts of chuck, increased service life, save manpower, improved usage ratio of equipment and labor productivity.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is that the utility model is the vertical section structural map of embodiment with specification Φ 200 * 75.

Among Fig. 11,2,3 and 1: 50 circular cone body opening be improvement place of the utility model on existing known scroll chuck basis.

Among the figure 1, discharge the soket head cap screw of bits powder hole and sealing,

2, the soket head cap screw of 3 fabrication holes of dismounting large conical gear and usefulness and sealing,

3, dust seal oil-resistant rubber ring and the seam that cooperates,

Tapering is meant that the big endoporus in chuck chamber is the circular cone body opening at 1: 50, but does not comprise 20 millimeters places apart from the outer face.

The specific embodiment

Specific embodiment with improvement place is explained as follows below

The internal thread hole of (1) among Fig. 1 and (2) M12 can be processed Φ 10.2 on drilling machine ^{+ 0.1}The hole, use the tapping of M12 screw tap again, the internal thread degree of depth is less than 5 millimeters of hole depths, sealing is tightened with soket head cap screw in the back; (2) after installing, 3 soket head cap screws should be lower than 1 millimeter in A face, the seam that processing cooperates with dustproof oil-resistant rubber ring on lathe: 80 millimeters of external diameter Φ, the seam degree of depth is 4 millimeters, processes 1: 50 circular cone body opening on lathe, dustproof oil-resistant rubber ring size: 100 millimeters of external diameter Φ, internal diameter Φ 80 ^-0.2Millimeter, thick 5 ^{+ 0.2}Millimeter; Discharge bits powder holes (1) apart from 20 millimeters places of chuck seam end face, 3 fabrication holes (2) of dismounting large conical gear and usefulness are on the circumference that is distributed on 130 millimeters of Φ in the middle of three claws on the end face (A); 1 millimeter of the degree of depth that the H size should cooperate with the chuck seam less than the ring flange seam among the figure is so that compress sealing.

This figure ratio is 1: 1, and long measure is a millimeter, and represents other specification.

Explanation in addition: when the utility model is discharged the bits powder on lathe, the soket head cap screw of discharging on the bits powder hole should be backed out earlier, bits powder hole will be discharged down, the 90 ° of rotating chucks repeatedly that do not stop in front and back, make the bits powder consider the powder hole along 1: 50 cone orifice flow to be worth doing to discharging, a few minutes can all excrete.

The concrete size of the utility model improvement place is made by oneself according to specification is different, but the technical characterictic of improvement place is identical, and improvement place is simple, easily makes practicality.

Claims

1. modified scroll chuck, it is to improve to form on existing known scroll chuck basis, it is characterized in that: have on the chuck cylindrical to discharge and consider the powder hole to be worth doing.

2. modified scroll chuck according to claim 1 is characterized in that: promising dismounting large conical gear on the end face of three claws, one end and the fabrication hole of usefulness.

3. modified scroll chuck according to claim 1 is characterized in that: with the sealing ring that nonmetal encapsulant is made, be installed on the seam of chuck chamber inner face, the sealing with the ring flange end face that connects in the middle of.