Machinist vise with independent hydraulic-cylinder structure专利检索-机器视觉图形技术专利检索查询-专利查询网

Machinist vise with independent hydraulic-cylinder structure

阅读：206发布：2023-07-19

专利汇可以提供Machinist vise with independent hydraulic-cylinder structure专利检索，专利查询，专利分析的服务。并且A machinist vise or other clamping device has a support carrying a stationary jaw, and an axially displaceable clamping body carrying a displaceable jaw mounted on the support. A cylinder having a fluid chamber is structurally independent of the clamping body and mounted therein with an axial projection or boss received in an axial hole or bore in the clamping body. The cylinder has a pair of pistons, one of which is annular and surrounds the other, that are coaxial with the projection and the hole. An actuator is connectable to the larger, annular piston to close the jaws on a workpiece after which it is automatically connected to the inner, smaller piston to apply clamping pressure at an increased mechanical advantage. The axial bore is accessible on removal of the displaceable vise jaw or a liner therefor and is provided with a filling opening for the fluid chamber of the cylinder, a screw normally closing this filling opening and forming a plug therefor. A pressure indicator visible through a port in the clamping body indicates the clamping pressure.，下面是Machinist vise with independent hydraulic-cylinder structure专利的具体信息内容。

权利要求

1. A clamping device comprising: a support; a stationary jaw carried on said support; an elongated clamping slide axially displaceable along said support and having an axial hole; a cylinder structurally independent of said slide and having a fluid chamber and an axial projection coaxial with said chamber and axially received in said hole; an axially displaceable jaw carried on said slide and confronting said stationary jaw; a small piston coaxial with said hole, said projection and said fluid chamber and axially displaceable in said chamber; an actuator on said slide; means between said actuator and said large piston for displacing said large piston axially toward said stationary jaw until said displaceable jaw encounters a predetermined axially directed resistance; means between said actuator and said small piston for displacing said small piston axially toward said stationary jaw after said displaceable jaw encounters said predetermined axially directed resistance; and a sleeve threadedly received in said support and having one end carrying said actuator and another end engaging said large piston, the first-mentioned means including a slip clutch between said sleeve and said actuator for rotationally coupling said sleeve and said actuator until said predetermined resistance is encountered, the second-mentioned means including a spindle threadedly engaged in said actuator and rotationally coupled to said sleeve, said spindle being operatively engaged between said actuator and said small piston.

2. The device defined in claim 1 wherein said cylinder is formed with a threaded filling bore extending axially through said projection and opening into said chamber, said device further comprising a screw threadedly received in and blocking said bore, said displaceable jaw overlying said hole in said slide.

3. The device defined in claim 1, further comprising spring means for pressurizing fluid in said chamber.

4. The device defined in claim 3 wherein said spring means includes at least one spring operatively engaged between said large piston and said cylinder and urging said large piston into said chamber.

5. The device defined in claim 1 wherein said cylinder is formed with a lateral projection, said slide being provided with a port in line with said lateral projection, said device further comprising a pressure gauge carried on said lateral projection an visible from outside said device through said port, said gauge being connected to said chamber to indicate pressure therein.

6. The device defined in claim 5 wherein said lateral projection is formed with a threaded socket receiving said gauge and with a passage communicating between the base of said hole and said chamber.

7. The device defined in claim 6 wherein said gauge extends into said port and is snugly received therein.

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Machinist vise with independent hydraulic-cylinder structure

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