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Machine tool

A technology for working machinery and workpieces, which is applied to metal processing machinery parts, machine tool parts, manufacturing tools, etc. It can solve the problems of large guide bushes, inability to receive, and lack of back spindles, etc., to achieve high bending accuracy, vibration suppression, and shortening The effect of processing time on the whole

Inactive Publication Date: 2015-06-17
CITIZEN WATCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the working machine described in Patent Document 1, there is a problem that the guide bush becomes relatively large because it needs to correspond to the front main shaft and the back main shaft respectively. With the back spindle, there is a problem that the workpiece cannot be transferred between the two spindles, and the front and rear sides of the workpiece are guided and processed by the guide bushing.

Method used

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Embodiment

[0029] like figure 1 As shown, the working machine 100 as an embodiment of the present invention has on the base 150: a front spindle 112; a rear spindle 122; a first tool rest 131 holding a processing tool 130; a second tool holding a processing tool 140 Stand 141 ; a guide bush support stand 161 for detachably holding the guide bush 160 .

[0030] The front spindle 112 holds the workpiece W on the front end side, and is supported by the front headstock 110 so as to be rotatable and drivable. The front headstock 110 is fixed on the base 150 .

[0031] The back spindle 122 is rotatably supported on the back headstock 120 and arranged to face the front spindle 112 on the same axis. Like the front spindle 112 , the rear spindle 122 can hold the workpiece W on the front end side.

[0032] The back headstock 120 is mounted on a back headstock carrier 121 slidably supported on a back spindle Z-axis guide 151 provided on the base 150, and the back headstock 120 is configured to p...

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Abstract

There is provided a machine tool capable of working a workpiece regardless whether it is gripped by a front spindle or a back spindle while guiding a free end side thereof by one guide bushing (160), is simplify and compacted and suppresses an increase of a number of axes to be controlled. The machine tool comprises the front and back spindles (112) and (122) having one and same axial line and disposed so as to face to each other and a guide bushing (160) having an axial line identical with the axial line. The guide bushing (160) is disposed between the front and back spindles (112) and (122), is configured so that the guide bushing (160) can guide the workpiece on both ends of the workpiece (W), so that the workpiece gripped either by the front spindle (112) or the back spindle (122) can be inserted, and so that the guide bushing (160) is movable in an axial direction.

Description

technical field [0001] The present invention relates to a machine tool for performing desired processing on a workpiece, comprising: a front spindle and a rear spindle having the same axis and arranged opposite to each other; and a tool rest supporting a tool for processing the workpiece. Background technique [0002] Conventionally, when multi-step machining is performed on one workpiece, a machine tool having a front spindle and a rear spindle facing each other with the same axis is used, the workpiece is transferred between the spindles, and the workpiece is processed from the front side and the rear side. Processing is carried out sequentially. [0003] In addition, there is known a machine tool (see Patent Document 1, etc.) in which guide bushes having the same axis are respectively provided on the main shafts, and the vicinity of the machining position of the workpiece held by the main shaft is supported by the guide bushes, thereby suppressing the Vibration and bendi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B3/30B23B13/12
CPCB23B3/30B23B9/02B23Q39/027B23Q2039/008B23Q2230/006Y10T82/2524Y10T82/2579Y10T82/2593B23B13/12
Inventor 中谷尊一
Owner CITIZEN WATCH CO LTD