CN201482985U - Ultra-slender shaft machining clamp - Google Patents

Abstract

The utility model relates to an ultra-slender shaft machining clamp. A tail stock sleeve of the conventional lathe is sleeved with a chuck body which is fastened through two fastening screws; the front end of the chuck body is provided with a lock nut; three jaws, which are used for fastening a workpiece on a shaft of the chuck body, are arranged in the lock nut; a plane ball bearing and a radial ball bearing which are arranged in the chuck body can guarantee a rotation flexibility of the chuck body, and can control concentricity and flexibility of the same simultaneously; and parts which are arranged in the chuck body are separated from the tail stock sleeve of the lathe by a sealed cover. The conventional mode of pushing through the tail stock sleeve of the lathe is changed into the mode of 'clamping and fastening' which comprises using the chuck body to clamp the workpiece, and then moving the tail stock sleeve of the lathe to fasten and lock the workpiece, so the problem that the ultra-slender shaft sags to generate shape error due to dead weight or overpressure from a tail stock of the lathe is solved.

Description

A kind of superfine shaft clamp for machining

Technical field:

The utility model relates to the common tool of machined into, especially a kind of engine lathe processing superfine shaft anchor clamps.

Background technology:

(length-to-diameter is greater than 25 for the machining slender axles at present, less than 50) often to adopt tool cutting edge angle be that 93 ° kinds of processes such as billmpse tool, centre frame, follow-rest and reverse feed are finished, and for superfine shaft (length-to-diameter is greater than 50), form errors such as laemodipodiform, prismatic, taper shape, dolioform, bending often appear in said method processing.

Summary of the invention:

The purpose of this utility model just provides the special fixture that a kind of engine lathe can the processing slim axle can be processed superfine shaft again.

The utility model anchor clamps are to change existing anchor clamps to hold out against mode to the clamping force of workpiece, are " folder one draws " mode, and it is excessive because of deadweight and tail stock top power fundamentally to solve superfine shaft, cause down to bend and the problem of form error occurs.

Description of drawings:

Fig. 1 is the utility model structural representation.

The specific embodiment:

With reference to Fig. 1 as can be known, a kind of superfine shaft clamp for machining is enclosed within collet body 13 on the tail stock sleeve 11 by lathe chuck 1 holding workpiece one end, by two trip bolts 10 fastening (barrel of tail stock car one groove is anti-skidding); The workpiece other end passes locking nut 6 endoporus, and hooks on the groove that the pre-car of shaft head goes out by being hinged on pulling claw 5 on the chuck axon 12, tightens locking nut 6, makes three pulling claws, the 5 fastening location that are assemblied in wherein; To lock behind the tail stock sleeve 11 tension workpiece.And, bear axial tension and control flexibility, guarantee concentricity by radial ball bearing 8 and plane ball bearing 7 in the collet body 13.

Claims (1)

1. a superfine shaft clamp for machining comprises the lathe tail clamping device, it is characterized in that: collet body (13) is enclosed within on the tail stock sleeve (11), and is fastening by two trip bolts (10); The workpiece other end passes locking nut (6) endoporus, hooks its shaft head groove by pulling claw (5), and three pulling claws (5) that locking nut (6) will be assemblied in wherein are fastened on the chuck axon (12); Lock behind locomotive tailstock cover for seat tube (11) the tension workpiece, and, bear axial tension and control flexibility, guarantee concentricity by plane ball bearing (7) and radial ball bearing (8) in the collet body (13).

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