RU72896U1 - CLAMPING DEVICE FOR FLAT DETAILS OF VARIABLE THICKNESS - Google Patents

Abstract

The utility model relates to the field of metal cutting, in particular, to clamping devices for processing flat parts of variable thickness on metal cutting machines.

The clamping device comprises a plate with stops, screw clamp and a pair of pivotally attached brackets connected by an axis and a coupler. On the axis are spring-loaded wedge clamps in the form of end cams. The brackets are fixed with a latch closed on the screed. The parts are pressed to the stops, and for their clamping, the cams are inserted into the gaps between the end parts of the parts and rotated by a removable handle.

The utility model provides uniform clamping of the end parts of the parts and eliminates vibration during processing.

Description

The inventive utility model relates to the field of metal cutting, in particular, to clamping devices for processing flat parts of variable thickness on metal cutting machines.

Known device for milling tides at the lever (Anserov MA, Accessories for metal cutting machines, M., Mashgiz, 1960, p. 560, Fig. VIII - 86), containing a base, clamps and movable clamping elements.

The well-known "Multiple clamp" (AS USSR No. 1556869, B23Q 3/06, publ. 04/15/1990), containing the base and a movable clamping plate with elastic links.

In these devices, the distances between the working surfaces of the clamping elements are the same, which does not allow uniformly clamping flat parts of variable thickness.

The closest technical solution adopted for the prototype is the device (Bolotin H.A., Kostromin F.P., Fundamentals of the design of devices, M., State Scientific and Technical Publishing House of Engineering Literature, 1951, pp. 234-235, Fig. 256 ), containing the plate, longitudinal and transverse stops fixed on it, and spring-loaded wedge clamps with drive screws. This design does not allow uniformly clamping flat parts of variable thickness, since the clamps move along the guides parallel to the plane of the workpiece connector and do not have the ability to shift perpendicular to it.

The objective of the proposal is to create a design that provides improved processing quality of flat parts of variable thickness for

due to the uniform clamping of their end parts and eliminating their vibration during processing.

For this, the clamping device for flat parts of variable thickness comprises a plate with longitudinal and transverse stops fixed on it and wedge clamps spring-loaded with elastic elements with a drive element.

New is that the plate is equipped with a pair of pivotally mounted brackets connected by an axis and a screed and located opposite the longitudinal stop, a bracket retainer and a rigidly fixed screw clamp to tighten the parts against the transverse stop. New is the fact that the wedge clamps are made in the form of end cams and are placed with the possibility of rotation on the axis. In addition, springs mounted on the axis between the cams are used as elastic elements. The screed is made in the form of a rod rigidly fixed with its ends on the brackets. The bracket holder is made in the form of a pivotally latched latch interacting with the screed. As a drive element of the end cams, a handle is used that is detachably connected to any of the cams.

The technical result is expressed in the following.

The hinged fastening on the plate of a pair of brackets connected by an axis and placement of wedge clamps made in the form of spring-loaded end cams on this axis allows the cams to be inserted into the gaps between the end parts of the parts and have a uniform effect on their side surfaces when clamping. This eliminates the vibration of parts during processing and, as a result, leads to an increase in the quality of their processing.

The accompanying drawings depict:

figure 1 - clamping device for flat parts of variable thickness, front view;

figure 2 is the same, a top view;

figure 3 - section aa in figure 2.

The clamping device for flat parts of variable thickness comprises a plate 1 with longitudinal 2 and transverse 3 stops fixed to it. The plate 1 is equipped with a pair of pivotally mounted brackets 4 connected by an axis 5 and a coupler 6. The brackets 4 are located opposite the longitudinal stop 2. Wedge clamps with a drive element made in the form of end cams 7 are arranged on the axis 5 with a possibility of rotation. Between end cams 7 are installed spring-loaded elastic elements made in the form of springs 8. The plate 1 is equipped with a bracket holder 4 and a rigidly fixed screw clamp 9 for compression details 10 to the transverse 3 emphasis. The bracket clamp 4 is made in the form of a pivotally latched latch 11, interacting with the screed 6. The screed 6 is made in the form of a rod, rigidly fixed with its ends on the brackets 4. As a drive element of the end cams 7, a handle 12 can be used that is detachably connected alternately to any of cams 7.

The clamping device for flat parts of variable thickness works as follows.

Flat parts 10 of variable thickness are installed with their side surfaces on the plate 1 and manually pressed to the longitudinal 2 stop. Screw clamp 9 parts 10 are pressed against the transverse 3 emphasis. By turning the brackets 4, the end cams 7 are introduced into the gaps 13 between the end parts 14 of the parts 10. The brackets 4 are then fixed in a vertical position by locking the latch 11 on the coupler 6. Using the removable handle 12, each end cam 7 is rotated around the axis 5 until it touches

lateral working surfaces with the lateral surfaces of the end parts 14 of the parts 10. Due to the elastic deformation of the springs 8 acting on the end cams 7, there is a uniform wedging clamp of the end parts 14 of the parts 10 for further processing. Spreading parts 10 after processing is performed in the reverse order.

Claims (6)

1. A clamping device for flat parts of variable thickness, comprising a plate with longitudinal and transverse stops fixed thereon and spring-loaded wedge clamps with a drive element, characterized in that the plate is provided with a pair of articulated brackets connected by an axis and a coupler and located opposite the longitudinal stop , the bracket retainer and a rigidly fixed screw clamp to tighten the parts to the transverse stop, and the wedge clamps are made in the form of end cams and are placed with zhnosti rotation on said axis. 2. The clamping device according to claim 1, characterized in that springs mounted on said axis between the cams are used as elastic elements. 3. The clamping device according to claim 1, characterized in that the screed is made in the form of a rod, rigidly fixed with its ends to the brackets. 4. The clamping device according to claim 1, characterized in that the bracket holder is made in the form of a pivotally latched latch interacting with the said screed. 5. The clamping device according to claim 1, characterized in that a handle is used as the drive element of the end cams. 6. The clamping device according to claim 5, characterized in that the handle and any of the cams are detachably connected.