Machine vise
阅读：63发布：2023-07-18
专利汇可以提供Machine vise专利检索，专利查询，专利分析的服务。并且A vise, particularly a vise for use in a machine tool having means for directly supporting the movable jaw against tilting. The spindle nut of the vise is supported on and by at least two of a plurality of pins which may be retracted and subsequently replaced for rapid adjustment of the position of the spindle nut and when in place will support the spindle nut against both movement parallel with the axis of the vise spindle and also support the spindle nut against tilting motion in a plane through the axis of the vise spindle. This both minimizes the cost and improves the operation of the vise.，下面是Machine vise专利的具体信息内容。
1. A vise, particularly a machine vise, of the kind having a movable clamping jaw and comprising in combination; a base plate having a U-profile defining a pair of legs and having two outer guide plates on said legs; a row of transverse cross holes in the said legs and support pins insertable in said holes; a slide movably guided on said outer guide plates, which slide carries the clamping jaw; a spindle which extends in the direction of slide movement and which is disposed above the support pins, the front end of said spindle being supported on the slide; a spindle nut having a lower part which extends downwardly between said legs of said base plate, said spindle nut surrounding the spindle and being guided only on the spindle, said spindle nut lower part having a front limiting surface and a rear limiting surface for each abutting a respective one of said support pins, said rear limiting surface having a portion downwardly directed away from the spindle and upwardly supporting the spindle nut rear end on the abutting rear support pin, said front limiting surface having a portion directed upwardly toward the spindle and downwardly restraining the front end of the spindle nut on the abutting front support pin.
2. A vise according to claim 1, in which the support pin arranged in the frontmost cross hole is split to define an axially spaced pair of opposed short parts extending inboard from the base plate legs and abutting the spindle nut only adjacent the sides thereof.
3. A vise according to claim 1, in which the slide includes rails disposed in slideable gripping relation under said outer guide plates, the cross holes being located directly below said outer guide plates, said rails of said slide extending rearwardly only to the front most hole when the vise jaws are closed but being rearwardly movable past ones of said support pins without interference therefrom.
4. A vise according to claim 1, in which said rear and front limiting surfaces each include quarter cylinder shaped faces engageable with respective support pins and incorporating said downwardly and upwardly directed portions, respectively, as well as rearwardly and forwardly directed portions, respectively.
5. A vise according to claim 1, in which said downwardly and upwardly directed portions are planar, sloped and substantially oppositely facing surface portions bearing on respective adjacent support pins in sloped tangential relation.
6. A vise according to claim 1, in which said rear and front limiting surfaces are stepped to define planar, vertical, rearwardly and forwardly facing surface portions, respectively, and planar, horizontal faces which are said downwardly and upwardly directed portions, respectively, said portions of said limiting surfaces establishing a double line contact with the adjacent respective support pins.
7. A vise according to claim 1, in which said lower part of the spindle nut depends from said spindle between said legs, said spindle nut being free of contact with said legs, and hence with said slide supporting guide plates, the bearing contact between said spindle nut lower part and said support pins being spaced below said spindle, whereby a pull by said spindle on said spindle nut during tightening of said vise produces a rocking moment on said spindle nut, said downwardly and upwardly directed portions of said spindle nut positively bearing on said rear and front support pins to block rocking movement of said spindle nut in response to said moment.
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