JPS62147457U - - Google Patents

Description

[Brief explanation of the drawing]

The drawings show one embodiment of the clamping device according to the present invention. Figure 1 is a schematic perspective view showing the entire vise, and Figure 2 shows details of the clamping part, with the upper half inside the cylinder tube being shown in detail. The lower half is a sectional view showing the state before the piston is urged forward by compressed air, and the lower half is a sectional view showing the state where the piston is urged forward to the maximum extent. Figure 3 is an exploded perspective view showing the detailed cylinder structure inside the cylinder tube. , FIG. 4 is a cross-sectional view showing details of the pressure adjustment section, FIG. 5 is a perspective view of a joint included in the pressure adjustment section, FIG. 6 is an exploded perspective view showing the mounting structure of the adjustment ring, and FIG. The figure is a sectional view showing details of the fixing part. 1...Base frame, 2...Bed, 3...First clamping plate, 4...Second clamping plate, 5...Cylinder tube,
6...Lead screw shaft, 7...Holding part, 8...Adjustment ring, 9...Pressure adjustment part, 10...Fixing part, 18...
Threaded cylinder, 25... cylinder, 26... piston, 2
7... End piston, 28... Head cover, 40
...Joint, 41...Front case, 42...Rear case, 60...Nipple, 61...Putskin, 6
2... Valve body, 64... Valve seat, 70... Actuator, 7
4...Compression coil spring, 80...Spring seat ring, 84...Male thread, 85...Indicator needle, 86...Window, 9
0...Bottom casing, 92...Diaphragm, 9
3...Top casing, 94...Push rod,
95...Pressure receiving part, 96...Disc spring, 97...Through hole, 9
8...Lock plate, 103...Sliding groove.

Claims (1)

[Scope of utility model registration request] An object can be held under pressure by moving a pair of opposing clamping plates toward and away from each other, and a lead screw shaft is attached to one of the clamping plates that can be slid on the bed. At the same time, a cylinder tube that can be rotated concentrically with the tube is provided at a predetermined position on the bed, and a cylinder tube that can rotate integrally with the tube and that can slightly slide in the axial direction is installed inside the cylinder tube. A threaded cylindrical body that is allowed to move and is screwed into the lead screw shaft is provided, and is slidable in the axial direction by fluid pressure at the inner part thereof, and by the sliding movement, the above-mentioned A clamping part is configured by airtightly sealing a piston that can project a lead screw shaft together with a threaded cylinder, and a clamping part is configured to adjust the fluid pressure supplied to the piston, and a fluid passage is connected in the axial direction to the head cover of the cylinder tube. An outer cylindrical body is fixed along the cylinder, and a valve body is provided in the cylinder to open and close the flow path by moving towards and away from the valve seat to form a valve chamber, and a biasing member is attached in response to the pressure in the valve chamber. An actuator is provided that can control the opening and closing of the valve body by displacing in the axial direction of the outer cylinder against the elastic force of the actuator, and the actuator engages with the spring seat of the biasing member to move the seat to the outer cylinder. A pressure adjustment part is constructed by fitting an adjustment ring on the outer circumference of the cylindrical body to move the bed in the axial direction, and the bed is fixed at a desired position on the base frame by a biasing member. A push rod is built into the casing so that its tip is in a protruding state, and the push rod is moved in the direction and moved against the elastic force of the biasing member by fluid pressure via the diaphragm, and the protruded push rod is The fixing part is inserted into a relatively large through hole drilled in the base frame, the tip of the push rod can be engaged with the bed, and the base frame is clamped and fixed at a desired position by the bed and casing. A clamping device featuring: