RU182456U1 - DEVICE FOR BASING AND FASTENING OF PARTS - Google Patents

Abstract

The utility model relates to the field of mechanical engineering, in particular to machine tools and can be used for basing and fixing parts along a plane and two holes.

The technical result, which is aimed at the proposed utility model, is to increase the reliability and accuracy of the base of the workpiece.

The technical result is achieved in that the device for basing and securing parts containing a base plate on which there are two supports with cylindrical fingers, one of which is movable with the possibility of reciprocating movement along a fixed guide, in contrast to the known, is additionally equipped a moving support moving device made in the form of a lead screw connected to it, and a moving support fixing device made in the form of a fastening element and mounted in the groove movable support, wherein the guide is fixed on the base plate.

Description

The utility model relates to the field of mechanical engineering, in particular to machine tools and can be used for basing and fixing parts along a plane and two holes.

Known and widely used in the manufacture of devices for locating parts by holes, consisting of a base and two mounting fingers, one of which is cylindrical and the other cut off (Korsakov BC Fundamentals of the design of devices, M., Mechanical Engineering, 1975, p. 60, FIG. 39)

A device for basing parts on a plane and holes is known, in which one of the fingers is cylindrical and pressed in, and the other with a ball head and mounted with the possibility of swinging in the direction of the center line (description to USSR author's certificate No. 595115, IPC B23Q 3/00, publ. 02.28.1978, Bull. No. 8).

In order to simplify the design, the device for basing parts can be equipped with a flat spring fixed on the housing, designed to accommodate a ball head (description to USSR author's certificate No. 1187944, IPC B23Q 3/00, publ. 30.10.1985, Bull. No. 40).

A device is known for basing parts by holes, in which a cylindrical pin and a supporting base element are mounted on the axis of the rod (description of USSR copyright certificate No. 1357183, IPC B23Q 3/00, publ. 07.12.1987, Bull. No. 45) .

The part is mounted on the finger and the base element and it, acting on the plate elastic element, rotates the base element until the base points come into contact with the forming hole of the part, centering it. The choice of the gap between the hole and the base element increases the accuracy of basing.

Known devices do not allow to base parts with a large deviation of the center-to-center distances, and a cut finger loses its strength when the diameter decreases. The use of swinging base elements complicates the design of the devices, while reducing the diameter of the base holes, their use is limited.

Closest to the proposed one is a device for basing parts containing a base plate on which there are two supports with cylindrical fingers, one of which is movable with the possibility of reciprocating movement along a fixed guide (description to USSR author's certificate No. 706228, IPC B23Q 3/0, publ. 30.12.1979, Bull. No. 48).

The disadvantages of such a device are:

- the lack of the possibility of forced centering (shift) of the moving finger relative to the base hole of the part, which complicates the installation of the latter;

- to secure the part, additional clamping elements (for example, tacking) are necessary, which can impede the processing of the upper surface of the part (for example, grinding)

- when basing between the mounting fingers and the holes of the part there are gaps, which reduces the accuracy of the part relative to the center line of the fingers.

The technical problem to which the proposed technical solution is directed is to create a device for basing and securing parts, providing convenient, reliable and accurate basing and securing of parts with a simple design.

The technical result, which is aimed at the proposed utility model, is to increase the reliability and accuracy of the base of the workpiece.

The technical result is achieved in that the device for basing and securing parts containing a base plate on which there are two supports with cylindrical fingers, one of which is movable with the possibility of reciprocating movement along a fixed guide, in contrast to the known, is additionally equipped a moving support moving device made in the form of a lead screw connected to it, and a moving support fixing device made in the form of a fastening element and mounted in the groove movable support, wherein the guide is fixed on the base plate.

The technical result is achieved due to the possibility of forced centering (shift) of the moving finger relative to the fixed one, in which gaps are eliminated in the direction of the center line and the part is centered relative to the specified line. With a further relative shift of the fingers by means of a force circuit between them and the base surfaces of the holes of the part, the latter is fixed. The moment of fixation is fixed.

The proposed technical solution is illustrated by the drawing (Fig.), Which shows a General view of the device for basing and fixing parts.

A device for basing and securing parts (Fig.) Contains a base plate 1 on which two supports with cylindrical fingers are located. One of the supports 2 with the first cylindrical base finger 3 is fixedly mounted on the base plate 1. The base cylindrical finger 3 is fixedly mounted on the support 2.

The second support 4 with the second base cylindrical finger 5 is movable with the possibility of reciprocating movement along the intercenter line of the fingers 3 and 5. The movable support 4 moves along a rail 6 fixed on the base plate 1, made, for example, in the form of two parallel strips. The base cylindrical pin 5 is fixedly mounted on the support 4.

The movable support 4 is equipped with a device for its reciprocating movement, made in the form of a lead screw 7, which is connected to the support 4, for example, is installed inside the support. For rotation, the lead screw 7 is connected to the drive, for example, manual, made in the form of a nut 8 fixed on it, which is equipped with a pin 9 for fixing on the lead screw 7.

The movable support 4 is equipped with a fixing device made in the form of a fastening element, for example, a bolt 10. The bolt 10 is screwed into the base plate 1 through the through groove 11 made in the movable support 4. The dimensions of the groove are determined depending on the range of center-to-center distances of the similar holes details that gives the device universality.

The device operates as follows.

The installed part 12 is put with one hole on the first cylindrical pin 3 of the fixed support 2. Then, by shifting the support 4 along the guide 6, by rotating the spindle 7 by rotating the nut 8, adjusting the center distance between the fingers 3 and 5, the part is mounted on the second cylindrical finger 5.

After that, by further shifting the support 4 in one direction or another (for compression or tension), the part 12 is secured, and the clamping force is set depending on the structural and technological parameters of the part and the type of processing and is ensured, for example, using a torque wrench. The found position of the support 4 is fixed by the fastener 10.

The device was used for basing and securing the “Bracket” part when finishing milling the upper surface of the part on a vertical milling machine.

The proposed device provides convenient and accurate basing and fixing parts of the same size with a simple design.

Claims (1)

A device for basing and securing parts, containing a base plate, on which there are two supports with cylindrical fingers, one of which is movable with the possibility of reciprocating movement along a fixed guide, characterized in that it is equipped with a moving support moving device made in in the form of a lead screw connected to it and a device for fixing the movable support, made in the form of a fastener installed in the groove of the movable support, The bark is fixed to the base plate.

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