JPH0413201U

JPH0413201U -

Info

Publication number: JPH0413201U
Application number: JP5123490U
Authority: JP
Priority date: 1990-05-18
Filing date: 1990-05-18
Publication date: 1992-02-03

Description

[Brief explanation of the drawing]

図面は本考案の実施例を示し、第１図は第２図
−線における切断正面図、第２図は第１図
−線における縦断面図、第３図は第１図−
線における縦断面図、第４図は第２図−線に
おける切断正面図、第５図はその平面図、第６図
は第４図−線における切断平面図、第７図は
第４図Ａ方向での一部切断平面図、第８図は加工
状態の一部の拡大切断側面図、第９図ａ，ｂ，ｃ
は各加工状態の説明平面図、第１０図ａ，ｂは各
加工軸の割出状態の説明正面図である。Ｍ……被加工材料、１……主軸、２……チヤツ
ク、３……加工軸、３_１，３_２……偏芯加工軸、
４……枢着軸、５……ブラケツト、６……揺動体
、７……マイクロネジ、８……ストツパ、９……
バイトホルダ、１０……外径バイト、１１……面
取りバイト、１２……センタードリル、１３……
止めネジ。 The drawings show an embodiment of the present invention, in which FIG. 1 is a cutaway front view along the line of FIG. 2, FIG. 2 is a longitudinal cross-sectional view along the line of FIG. 1, and FIG.
4 is a cutaway front view taken along line 2-line, FIG. 5 is a plan view thereof, FIG. 6 is a plan view cut taken line 4-line, and FIG. 7 is a cutaway front view taken line 4-A. Fig. 8 is an enlarged cutaway side view of a part of the machined state, Fig. 9 a, b, c
10A and 10B are explanatory plan views of each machining state, and FIGS. 10A and 10B are explanatory front views of each machining axis in an indexed state. M...Machining material, 1...Main shaft, 2...Chuck, 3...Machining axis, 3 ₁ , 3 ₂ ...Eccentric machining axis,
4... Pivoting shaft, 5... Bracket, 6... Rocking body, 7... Microscrew, 8... Stopper, 9...
Bit holder, 10... Outer diameter bit, 11... Chamfering bit, 12... Center drill, 13...
Set screw.

Claims

[Claims for Utility Model Registration] (1) A rotary main shaft 1 equipped with a chuck 2 that is attached and detached for processing a workpiece material M, and a processing shaft 3 that reciprocates in the axial direction in opposition to the chuck 2 on the main shaft side. In an automatic lathe that performs secondary processing by rotating the machining shaft 3, the machining shaft 3 is an eccentric machining shaft 3 ₁ , 3 ₂ having a rotation center eccentric from the center of the main shaft. A plurality of microscrews are provided on a swinging body 6 which is swingably provided on a bracket 5 by a pivot shaft 4 so as to be arranged on an arc line passing through the center of the main shaft, and a plurality of microscrews are provided on the bracket 5 so as to be able to move forward and backward. An eccentric machining device for an automatic lathe, characterized in that a swinging body 6 is provided with positioning stoppers 8, 8 for the eccentric machining shafts ₃₁ , ₃₂ that abut against the eccentric machining shafts 31, 32, respectively. (2) The processing shaft 3 has an eccentric shaft at its tip, and is provided with an outer diameter tool 10 and/or a chamfering tool 11 via a tool holder 9 whose radial dimension can be finely adjusted. The eccentric processing device according to item 1. (3) Claim 1 in which the processing shaft 3 is provided with a center drill 12 on at least one eccentric processing shaft ₃₁ .
Or the eccentric processing device according to 2. (4) The machining shaft 3 is a hollow shaft that connects the hollow portion to an air supply source, and is provided at its tip to allow the supplied air to flow out of the machining shaft through a bite holder 9 at its tip. The eccentric processing device according to claim 2 or 3. (5) The eccentric machining device according to claim 2, 3 or 4, wherein the cutting tool holder 9 provided at the tip of the machining shaft 3 is detachably provided with a set screw 13.