SU1743783A1 - Device for clamping blanks in milling blank faces - Google Patents

Abstract

Name: Device for clamping the workpiece when milling faces. Use: as a multi-machine tool. SUMMARY OF THE INVENTION: The device comprises a housing 1, on which at an angle of 120 °. three racks are installed with the possibility of synchronous rotation. A power unit with a mounting plate 20, having basic prismatic recesses 21, and axes 22, 23 with clamping bobbins 24.25 and eccentric cams 31 is fixed on each rack. The presence of height-adjustable pallet 34 allows setting the workpiece 26 to the desired height, and The arrow pointer 39 allows all the blanks to be rotated simultaneously to the desired angle. A version in which several devices are connected in one unit is possible. 5 il.

Description

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WITH

FIELD OF THE INVENTION The invention relates to a machine tool industry, in particular to multi-seater machine tools.

The aim of the invention is to increase the productivity of labor and ease of use of the device.

FIG. 1 shows the device in plan; in fig. 2 is a section along A-A in FIG. one; in fig. 3 is a section along BB in FIG. one; in fig. 4 is a schematic of milling the hexagon faces; in fig. 5 - installation diagram of several devices in one unit.

The device consists of a housing 1 in which a synchronous rotation drive in the form of a self-braking worm 2 and a worm gear 3 is placed. The worm to 2 has a hexagonal shank on both sides for mounting a handle (not shown conventionally) or a connecting nozzle 4

(see FIG. 5) when a block is assembled from several devices.

The worm gear 3 is installed in the center of the housing 1 by means of a key 5 of the shaft 6 with the possibility of rotation in bearings 7 and 8. At one end of the shaft 6 there is fixed a gear wheel 9 and an axis 10 with a slot, and at the other end with screws 11 the washer 12 and the ring 13 are fixed worm wheel 3 and shaft 6.

At an angle of 120 ° from the axis of the shaft 6 in the bearings 14,15 installed three racks 16, fixed in the axial direction by washers 12.

All three racks 16 are installed on the housing 1 with the possibility of synchronous rotation due to the gearing of the gear wheel 17 mounted on each rack with the central gear wheel 9.

At the ends of the uprights 16 rigidly secured power units 18, each of which wines

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Tami 19 fixed mounting plates 20 with basic prismatic grooves 21, located at an angle of 60 ° to each other.

The drive of the power unit consists of axes 22 and 23, on the ends of which rocking chairs 24 and 25 are installed. Each rocking chair is designed to clamp two workpieces 26 and spring with a spring 27 relative to the mounting plate 20. To compensate for the difference in diameter of the workpieces 26 while rocking clip 24 on axes x 22 and 23 with a gap and with the possibility of a turn in the horizontal plane on spherical washers 28. Screws 29 fix the rockers from turning. On one side of each of the axles 22 and 23, nuts 30 are installed, and on the other side, eccentric cams 31 with a handle 32 are installed. Cams 31 are mounted on the axles with the possibility of rotation with the help of pins 33,

The pallet 34 serves to limit the axial position of the blanks 25 and is set at a height with the aid of sleeves 35, which are moved for this along columns 36 with a scale of divisions and fixed at a required height by a screw 37.

In the center of the pallet 34, a hole is made in which the axis 10 is placed, in the groove of which a pointer pointer 39 is fixed by a screw 38. The latter is protected by a transparent casing 40 and indicates the angular position of the mounting plates 20 on a scale of 41.

A device for clamping blanks when milling faces works as follows.

The device body 1 is fixed by slots on the table of the milling machine. The pallet 34 is installed at a predetermined height on a scale of columns 36, depending on the bolt length, taking into account the gap between the head supporting part and the mounting plate 20 and is fixed by a screw 37. the handles 32, the eccentric cams 31 are set to the maximum position

clamping the workpiece 26. The rotation of the nuts 30 clamping the workpiece 26 to the specified clamping force. In this position, the nuts are secured with lock nuts 30. Rotate any

the tetrahedron of the worm 2 arrow pointer 39 is set on a scale of 41 to zero. A set of cutters milled two faces of all the workpieces 26 at a given turnkey size. Rotation of the worm 2

The arrow pointer 39 is transferred to the mark of 60 ° and the second set of edges is machined with the same set of cutters, and then, similarly, the third (see Fig. 5). Twist the handles 32 turn the eccentric

cams 31, release the clamping rocking clip 24, 25 and remove the finished parts. The cycle is repeated.

When replacing the diameter of the workpiece, a preliminary changeover cycle is carried out. AT

Depending on the size of the desktop machine can install multiple devices in one unit.

The angular direction of the clamping forces of the blanks of the multi-link mechanism intersecting in the center of the synchronous rotation of the mounting plates from the drive, increased the ease of use, i.e. allowed to reinstall all blanks at the same time for milling subsequent edges

without change of adjustment of the cutting tool.

Claims (1)

The invention of the Device for clamping blanks when milling faces, comprising a housing with a power unit consisting of a mounting plate with basic prismatic grooves and rocking chairs associated with a drive, characterized in that, in order to increase labor productivity and ease of operation, the device is equipped with additional power units, struts and synchronous rotation of the latter, the main and additional power units are rigidly fixed on the respective racks, and the basic prismatic grooves are made on each of the mounting plates on its periphery with equal angular pitch. 33 3029 27 28h L 24 18 BUT B 0 f2 ®ig.1 27 20 19 26 &% thirty, 25, 25 .36 Memory a / 2 / LA 20 / 26 Ш№ .  Yu  / & // № - P s. 77 sixteen  13 fc.3 GShSh IXSZI3ZZ55EIM Tg: W E erir cr ± f SEZMIZ isazz 2. 4 37 Jvj) shh:  pass i msh  w ss & 3 pass ®zh 3s well