JPH02167603A - Rolling chuck center and rotary working device - Google Patents

Abstract

PURPOSE:To provide safety and high precision working of a lathe operation such as cutting-off of long workpieces, pipes, etc. and working of eccentric shaft, etc. by clamping workpieces also at the tail stock side while rotating it. CONSTITUTION:This rolling chuck center has a chuck unit having a plurality of fastening claws 2 for clamping a workpiece and incorporating a bearing part as a rotary mechanism, while being provided on the opposite side to the claws 2 with a shaft 3 to be mounted on a tail stock. Namely, a bearing 7 is incorporated in an end of the tapered shaft 3 to be fixed by a bearing nut 4. A chuck 1 incorporating the claws 2 is incorporated in the bearing 7 to fasten a cover 5 with a mounting bolt 6. Further, one row of the bearing 7 is thrust bearing. The assembly of the shaft 3 and chuck 1 is inserted in the tail stock by utilizing the tapered portion of the shaft 3 to provide the rolling chuck center.

Description

[Detailed Description of the Invention] [Industrial Application ffFJ] The present invention relates to a rolling chuck center, and is particularly suitable for machining work of long-axis objects on a lathe, parting off of a vibrator, and eccentric axle loads. The present invention relates to a device suitable for Noutei.

[Conventional technology]

This conventional sleeve device uses pressing force to hold the workpiece. This is technology dY Ronsha.

March 5, 1978, ``Manual for Mechanical Upper Punch and Slots'' (Sasaki Kenichi vZ Osamu) 42nd Shinnomochi ``The commonly used center uses are shown in J.

[Problem to be solved by the invention]

In the above conventional technology, on the tailstock side, the workpiece is held using a pressing force, and the parting workpiece is held at the falling part when the workpiece is cut, and the long-axis object is applied. ．． Deflection of ¥,
No consideration was given to maintaining the eccentric part of the eccentric machining amount, which caused problems in terms of safety and consistency.

The first objective is to achieve safety in lathe work and high-quality machining by rotating the workpiece while gripping it on the tailstock side as well.

[Means to clear the issue]

A chuck mechanism with multiple tightening claws is used as the mechanism for holding the object on the tailstock side, and the element with this chuck mechanism is attached to #:, H1 of the machine. This is achieved by following and inverting li>1.

The rolling chuck center of the present invention has a chatter unit that has a plurality of clamping jaws for holding a workpiece, and has a built-in part as a one-rotation machine slide, and an opposite side of the clamping jaws. It is characterized in that the tsukuda is provided with a shaft part for attachment to the tailstock.

In addition, Akira Hondzu's 1-stroke machining equipment H1 includes a spindle chuck that is rotationally driven by a motor, a rolling chuck center that pulls the spindle chuck in the direction in which the spindle chuck is applied, and the above-mentioned shaft to which the rolling chuck center is attached. A means for gripping the workpiece is provided on the surface facing the center axis chuck of the roller rolling chuck described above, and The rolling chuck center is transmitted through the workpiece to the rolling chuck center, while the rolling chuck center and the iii.

[Effect]

One end of the shaft inserted into the tailstock is, for example, a taper for fastening to the tailstock, and the other end incorporates a bearing element.

By incorporating an assembly part with a chuck mechanism into this bearing element, the chuck mechanism part grips the workpiece, and the bearing element part follows the simultaneous rotation of the main shaft and workpiece J [+81 rotation]. .

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

Figure 31, Figure 4 shows an example in which the rolling chuck center is incorporated into a lathe.

The spindle chuck 12 rotates the workpiece 14 by a motor, and causes a rolling chuck center 16 attached to the tailstock 13 to follow.

The figure shows an example in which a rolling bearing is used in the rolling chuck center.

A bearing 7 is assembled into one end of a tapered shaft 3 and fixed with a bear link nut 4.

A chuck l incorporating a claw 2 is assembled into this bearing, and a cover 5 is attached and tightened with bolts 6.

Note that one row of bearings is a thrust bearing.

This assembly of shaft and chuck is inserted into the tailstock 13 using the tapered portion of the shaft 3, thereby forming a rolling chuck center.

FIG. 2 shows an example using a gas bearing.

The gas supplied from the gas intake 1110 provided at the end of the shaft 3 passes through the gas flow path 9 and is ejected from the jet 11 provided in the gas bearing 8, causing the chuck 1 to float.

FIG. 3 shows an example of machining a large-diameter vibrator by incorporating the rolling chuck center into a lathe.

FIG. 4 shows an example of a chuck using an eccentric shaft 15 in which the rolling chuck center is incorporated into a lathe. In the present invention, the axial direction of the spindle chuck that is rotated 1 ψ by the motor refers to the rotating axis direction, so the case of the pan center shaft 15 as in this example also falls within the scope of the present invention. .

〔Effect of the invention〕

According to this defense, in order to tighten the workpiece 14 with the second claw,
The gripper can be pulled back, and it is possible to prevent the workpiece 14 from falling or scattering after it is divided by the cutting operation.

When machining A-center cut material 15, the desired eccentricity can be obtained by centering on the chuck, and it is possible to omit center hole machining on the end face and special jigs, and the work time can be reduced to a large wheel. You can shorten it.

Because the rolling chuck center is a minting type,
? 1llll standard "High purity power 1- that matches the purity of 311
One is I'j (noh).

[Brief explanation of the drawing]

The first construction drawing is a cross-sectional view using a rolling bearing according to an embodiment of the present invention, FIG. 2 is a cross-sectional view using a gas bearing, FIG. 3 is a side view showing an embodiment of the present invention applied to a lathe, and The figure is a side view showing an example of application to eccentric machining. ■°°°Chuck, 2...claw, 3...shaft,
4... Link nut, 5... Cover 6... Bolt, 7... Ball bearing, 8... Gas bearing, 9
... Gas flow path, 10... Gas intake 0.11... Gas ejection U, 12... Spindle chuck, 13... Tailstock, 14... Work material, 15... - Wheel center work material.

Claims (1)

[Claims] 1. A chuck unit having a plurality of clamping claws for gripping a workpiece has a built-in bearing part as a rotation mechanism, and a tailstock is provided on the opposite side of the clamping claws. A rolling chuck center characterized by having a shaft section for attachment to. 2. A spindle chuck rotatably driven by a motor, a rolling chuck center located in the axial direction of the spindle chuck, and a tailstock in the axial direction to which the rolling chuck center is attached; Means for gripping a workpiece is provided on a surface facing the spindle chuck, so that the rotational drive is transmitted through the workpiece to the rolling chuck center, while between the rolling chuck center and the tailstock. A rotary processing device characterized by being able to slide freely while maintaining a positional relationship.