公开(公告)号：US4449868A

公开(公告)日：1984-05-22

申请号：US333577

申请日：1981-12-22

申请人： Karl Steinsberger ,  Albert Maier ,  Walter Herrmann

发明人： Karl Steinsberger ,  Albert Maier ,  Walter Herrmann

IPC分类号： B23G3/04 ,  B23Q5/027

CPC分类号： B23G3/04 ,  Y10T408/675 ,  Y10T408/68

摘要： Apparatus is disclosed for threading tapping holes in workpieces wherein the tapping hole is surrounded by a surface having alternating recesses and arcuate projections which are to be threaded. The apparatus has a hold-down plate one side of which is movable against the exposed side of the workpiece, a carrier which is reciprocable toward and away from the workpiece by a plunger and a spring, a tool holder which has external threads meshing with the internal threads of a nut in the hold-down plate and a helical cam groove receiving a pin of the carrier, and a fluted tap which is coaxially affixed to the holder and extends into the tapping hole when the hold-down plate abuts against the workpiece whereby the externally threaded ribs of the tap which alternate with the flutes extend into the recesses in the surface surrounding the tapping hole. The carrier is thereupon moved toward the hold-down plate to cause the tool holder to rotate whereby the tool holder moves axially and the tap cuts or rolls threads into the projections between the recesses in the surface surrounding the tapping hole. The length of the cam groove determines the extent of rotation of the tap, and such extent is selected with a view to ensure that each rib of the tap moves from a preceding recess into the next-following recess when the surface bounding one end of the cam groove terminates the movement of the carrier toward the hold-down plate. The carrier, the means for moving the carrier and the hold-down plate can constitute parts of a stamping machine.

摘要翻译： 公开了用于在工件中攻丝孔的装置，其中，攻丝孔由具有交替凹槽的表面包围，并且要被螺纹化的弓形突起。 该装置具有压板，其一侧能抵靠工件的暴露侧移动，该支架可通过柱塞和弹簧向工件的往复运动;工具架，其具有与所述工件相啮合的外螺纹 压紧板中的螺母的内螺纹和容纳载体的销的螺旋形凸轮槽，以及当压紧板抵靠工件时同轴地固定到保持器并延伸到攻丝孔中的槽形丝锥 由此与凹槽交替的丝锥的外螺纹肋延伸到围绕出钢孔的表面中的凹槽中。 然后，承载件朝向压紧板移动以使工具夹持器旋转，由此工具夹持器轴向移动，并且挖掘头将螺纹切割或卷绕到围绕出料孔的表面中的凹部之间的突起中。 凸轮槽的长度决定了水龙头的旋转程度，并且这样的程度是选择的，以确保龙头的每个肋条从前一个凹槽移动到随后的凹槽中， 凸轮槽终止载体向压板的移动。 承载件，用于移动托架和压板的装置可以构成冲压机的一部分。