SU1227363A1 - Diaphragm chuck - Google Patents

Description

The invention relates to the processing of materials by cutting, namely, devices for securing long cylindrical parts, such as sleeves, on machine tools.

The purpose of the invention is the expansion of technological capabilities by fixing long cylindrical parts.

FIG. depicts a membrane cartridge, in an inoperative state, a longitudinal section; in fig. 2 - membrane cartridge in working condition, longitudinal section; in fig. 3 is a view A of FIG. one.

The membrane cartridge includes a housing 1, which is fixed to the spindle 2. A screw 4 is attached to the housing 1 by a membrane 4, which is made integral with clamping jaws 5, in which two rows of stops are placed; 6 and an additional 7 for clamping the workpiece 8. The support surfaces B and C of the stops 6 and 7 are placed at different distances from the axis of the cartridge (when the cams 5 are in a free state), i.e. the difference between the distances 6 and 7 and the axis of the cartridge is equal to the value of X, based on the condition that the additional stops 7 of the cams 5 are an amount X closer to the axis of the pat

ron. Between the holes to accommodate the lugs 6 and 7 there is a less rigid jumper with a groove G, which ensures that the lug 7 is pressed while clamping the piece 8. A pinch 9 is actuated by the actuator (not shown) to expand the membrane 4 (by wiring the lugs 6 and 7). . The distance y between the lugs 6-7 is at least half the diameter D of the circumference of the support surfaces B of the working cams 5.

Membrane cartridge operates as follows.

When moving the rod 9 to the right, the membrane 4, deflection, separates the stops 6 and 7. The cartridge is ready for operation. Part 8 is inserted into the cartridge, and the rod 9 is displaced to the left. As a result, the stops 7 with the supporting surfaces B touch the surface of the workpiece 8 first. Then the stops 6 by the supporting surfaces B also touch the surfaces of the workpiece 8, after which the workpiece 8 is clamped. After machining the part 8, for example, the hole and the right end, the pins 9 are moved to the right, and the lugs 6 and 7 are dispersed again, freeing the part 8.

Type A

fig.Z

Claims (1)

MEMBRANE CARTRIDGE, in the case of which there is a membrane with clamping cams concentrically placed on it with working stops, at the ends of which support surfaces are made, and a rod with a drive, characterized in that, in order to expand technological capabilities by fixing long cylindrical parts, on each clamp the cam is made a recess and it is equipped with an additional stop with a support surface mounted from the working stop at a distance of not less than half the diameter of the circle the surface of the working stops, while the supporting surfaces of the additional stops are placed relative to the supporting surfaces of the working stops at a distance from the cartridge axis less by 0.2-0.8 of the stroke of the working stops. figs! SU „„ 1227363