摘要:
A machine tool for working elongated rod-like materials in rotation, particularly an automatic screw machine capable of working thin and long materials with a high degree of accuracy comparable to that of a headstock moving type automatic screw machine without involving any error in the indexing of the cutting tools for the work. The tool stand is reduced in weight, and movable along the longitudinal axis of the work, so that the machine is easy and inexpensive to manufacture.
摘要:
The straight turning automatic lathe whose bed carries a longitudinally movable spindle headstock with a bar workpiece and at least one secured upright carrying a cross slide with cutting tools. The upright is held motionless on the bed at a certain distance from the forward end face of the spindle head stock in its extreme advanced position and the cross slide is mounted on the upright side facing the forward end of the spindle headstock.
摘要:
A compound lathe in which a headstock is horizontally movable along a spindle axis to provide longitudinal feeding of a workpiece mounted for rotation with the spindle and a saddle carrying a turret is vertically movable to provide transverse feeding. The saddle is slidably disposed on vertical guideways which is formed on a column mounted on a bed at the back of the headstock rearwardly of cutting areas of the workpiece and which vertically extends in a plane parallel to the axis of the spindle. The turret supports tools for turning, milling, drilling and other operations. Numerically controlled servo motors preferably position the headstock and saddle. A secondary workpiece gripping means is provided to grip the end of the workpiece opposite the headstock and is releasably connected to the headstock for movement therewith. The gripping means allows accurate secondary machining of the cut-off portion of a parted workpiece by the tools on the turret.
摘要:
A numerical control lathe of the sliding-headstock type comprises an elongated bed, a headstock reciprocatingly disposed on said bed to travel longitudinally of said bed, a driving spindle rotatably supported on said headstock and having a collet chuck for supporting a workpiece on the spindle, a guide bush situated coaxially to the axis of the spindle so as to rotatably support the workpiece, a pedestal for supporting said guide bush detachably attached to said bed, a turret toolpost having a slide block movable in a direction perpendicular to the axis of the spindle, and another turret toolpost having a slide block movable in a direction parallel to the axis of the spindle.
摘要:
The invention provides a machine tool eliminating the need of keeping the removed feed-mechanism-protection cover outside the machine. The machine tool comprises a headstock provided with a main spindle for gripping a workpiece; a driving unit provided with a feed mechanism extended along a main spindle axis to move the headstock in a main spindle axial direction; a supporting bed provided with a guide bush in a removable manner; a first cover mounted on the headstock to protect a portion of the feed mechanism with respect to the main spindle axial direction; and a second cover removably mounted on the headstock on the front side of the first cover to protect another portion of the feed mechanism. The second cover is detachably attached to the first cover when removed from the headstock.
摘要:
A main spindle located in a region of a rotary guide bush device where the rotary guide bush device (has been attached to be disposed in a position of a front (F) along an axis (C) direction when the rotary guide bush device having a guide bush, which is supported in a removable manner by a guide bush-supporting base (supporting base) provided in the front (F) along the axis (C) direction of the main spindle, is removed. A seal member (fixed to the guide bush-supporting base has contact with an outer circumferential surface of a main spindle cover over an entire circumference, so that processing with or without the guide bush can be selected and a complicated process required for switching the processing with or without the guide bush can be simplified.
摘要:
The invention relates to a metal-cutting machining process for a semi-finished product having a predetermined shape and at least one machining surface which has the steps: applying a protective foil having a predetermined elongation at break to the at least one machining surface with a predetermined adhesive force, placing a metal-cutting tool in a predetermined position above the machining surface, exerting a predetermined mechanical force in a predetermined direction for a predetermined length of time to the tool for carrying out a metal-cutting process on the semi-finished product and lifting the tool from the at least one machining surface after the predetermined length of time. In order to protect the semi-finished products from damage through the machining residues and at the same time not to impair the drilling performance, according to the invention through the adhesion an adhesive force is produced between the protective foil and the machining surface of substantially 10 N/25 mm and a protective foil is used which has an elongation at break of between 80 and 120%.
摘要翻译:本发明涉及一种具有预定形状的半成品和至少一个加工表面的金属切削加工工艺,该加工表面具有以下步骤:将具有预定断裂伸长率的保护箔施加到至少一个加工表面上 预定的粘合力,将金属切削工具放置在加工表面上方的预定位置,在预定长度的时间内向预定方向施加预定的机械力,以对半成品进行金属切割加工 产品,并且在预定时间长度之后从至少一个加工表面提起工具。 为了保护半成品免受加工残留物的损害,同时不损害钻井性能,根据本发明,通过粘合,在保护箔和加工表面之间产生大致为10的粘合力 N / 25mm,使用断裂伸长率在80〜120%之间的保护箔。
摘要:
A device (10,110) for loading bars in an automatic lathe comprises guide means (19,119,119') along which is supported and made to run a bar (12,112) with leading end projecting from said guide means to be inserted in a lathe chuck (11,111) to be grasped by handling means (21,121) of the lathe moving parallel to the bar axis to feed the bar under machining tools (31,131). At least a first part of the guide means (19,119,119') nearest the chuck has kinematic connection with the handling means (21,121) for moving axially and substantially synchronously therewith.
摘要:
A device (10) for loading bars in an automatic lathe comprises a pusher (13) with handling means (15,18) to push axially the leading end of a bar (12) into a lathe chuck (11) to be grasped by lathe means (21) moving parallel to the bar axis to feed the bar under machining tools (31). The pusher (13) with its own handling means (15,18) is supported on a truck (24) moving along guides parallel to the direction of movement of the bar (12). The truck (24) comprises connection means (30) to be constrained to the lathe bar-feed means for moving synchronously therewith.
摘要:
In machining a blank material on an automatic lathe of the type having first and second headstocks slidably carried along a bed, the first and second headstocks are slidable along their respective machining axes, and the first headstock grips the blank material to take a front machining, whereupon the semi-machined blank material, i.e., a workpiece is transferred to the second headstock to take a rear machining. The lathe also has first and second guide bushes for intermediately guiding the workpiece near the working point while the workpiece is gripped by the first and second headstocks. For machining a blank material in the form of a cylindrical rod continuously, the entire machining cycle can be divided into the front and rear machinings. Thus it is possible to shorten the machining cycle period.