SU876357A1 - Device for clamping sliding assembly - Google Patents

Description

1 (54) DEVICE FOR CLAMPING THE MOBILE KNOT

I

The invention relates to mechanical engineering and can be used, for example, on metal-cutting machine tools.

 a device for clamping a movable unit, comprising a spring-loaded system for leveling the forces of the clamp 1. placed between two clamping elements.

However, the known device has large dimensions, as well as many intermediate parts, which complicates the design. In addition, the known device is not suitable for use in the manual control variant.

The purpose of the invention is to simplify the design, reduce the size and increase the convenience of customization.

This goal is achieved by the fact that the clamping force leveling system is made in the form of a bar, clamping rods having helical surfaces, helical gears, mating with a helical surface, and a shaft mounted with the possibility of axial displacement, with fixed additional helical gears attached to it. largest tilt and opposite

the direction of the teeth, with threaded sections on one end of the clamping rods, on which the clamping elements are placed, and on the other end, made in the form of a hexagon, a bar is installed.

In addition, the threaded surfaces of each of the clamping elements are unidirectional, with different pitch.

FIG. 1 shows the device, general view, longitudinal section; on fng. 2 shows section A-A in FIG. one; in fig. 3 - view

10B in FIG. 2

Claims (2)

In the housing 1 of the movable unit, the shaft 2 is mounted for axial movement, on which helical gears 3 are rigidly fixed with identical in size and opposite teeth in direction. The helical gears 3 are in engagement with counter-helical helical gears 4, which are mated with the {1-point surface of the clamping rods 5 and the end surfaces through the thrust bearings 6 abutted into the cups 7. At the ends of the clamped rods 5 there are placed clamping elements 8, made in the form of T-shaped crackers placed in the response grooves of the fixed knot.9. In order to prevent the clamping rods 5 from turning on the ends of the latter, having the shape of a hexagon, a bar 10 is installed, fastened with cotter pins 11. A handle 12 is installed on the shaft 2 to control the device. The device operates as follows. When the shaft 2 is turned by the handle 12 in the clamping direction, the helical gears 3 turn into the helical gears 4, which, resting through the thrust bearings b on the ends of the machines 7 and turning relative to the 10 clamping rods 5 fixed by the strap, move them down. The clamping rods 5, moving along the guides of the cups 7, move the clamping elements 8 until one of them touches the end working surface of the T-shaped groove of the stationary assembly 9, after which it stops rotating and is mounted on the helical gear 5 of the helical rod 5. the handle 12, the shaft 2 under the action of the teeth of the stopped tooth gear 4 moves in the axial direction and additionally turns the helical gear 4 mounted on the second clamping element 5 until the gap disappears between at the second clamping element and the end working surface of the T-shaped groove of the fixed unit 9. Thus, the mobile unit is clamped and two clamping efforts are balanced. The adjustment of the average axial position of the shaft 2 and the comfortable position of the handle 12 is made by turning the clamping rods. After that, the bar 10 is fastened to the ends of the latter. When the handle 12 is turned in the opposite direction, the lowering node is released. This embodiment of the device allows to simplify the design, reduce the size and improve the ease of setting up the device. Claim 1. Device for clamping a movable assembly, comprising clamping elements and a clamping force leveling system, characterized in that, in order to simplify the design and reduce the overall dimensions, the clamping force leveling system is made in the form of a plate, clamping rods having helical surfaces, helical gears , coupled with the aforementioned screw surface, and the shaft mounted for axial movement, with additional helical gears mounted on it with identical in size tilting and opposite in direction teeth interacting with the aforementioned helical gears; at one end of the clamping rods there are threaded sections on which the clamping elements are placed, and at the other end, made in the form of a hexagon, said strap. 2. The device according to claim I, characterized in that, in order to increase the convenience of adjustment, the threaded surfaces of each of the clamping elements are made unidirectional, with different pitch. Sources of information taken into account in the examination I. USSR author's certificate № 452468, cl. B 23 Q 1/28, 1973.