RU71922U1 - DEVICE FOR PROCESSING LATHE GUIDE MACHINES - Google Patents

Abstract

1. A tool for processing working external guides of the lathe bed, containing a tool head mounted on the holder with the possibility of linear and angular positioning of the tool on the holder relative to the machined guide, the holder is located on the counter of the transverse table installed in the guides of the longitudinal carriage, the latter is located on the bed machine, characterized in that the carriage is installed on the internal auxiliary guides of the bed. 2. The device according to claim 1, characterized in that a slide rail is mounted on the carriage, mating with the lower surfaces of the inner auxiliary rails. The device according to claims 1 and 2, characterized in that between the carriage and the slide bar there are gaskets fixed, for example, to the carriage. 4. The device according to claim 1, characterized in that a screw pair is installed on the machine, and a strap with a groove for an annular groove made on the screw is mounted on the holder.

Description

The utility model relates to devices for processing guides of the bed of a lathe and can be used for overhauls of metal-cutting equipment.

Known portable machine for A.S. USSR No. 691251, publ. 10/15/1979, IPC V23C 1/20 for processing guide rails of metal-cutting machine tools. It contains installed with the possibility of moving along the rails of the rack with a rotary traverse carrying the tool head. The traverse is made of articulated interconnected links, one of which is connected to the stand, and the other carries the tool head and is connected by means of a rod to the stand; the axes at the junctions of the links between each other, with the strut, with traction and traction with the strut are located so that when they are projected onto a horizontal plane, they are the vertices of the parallelogram. The processing of worn bed guides is carried out by installing a portable machine with a drive and a feed box on its base surfaces of the carriage.

The disadvantages of this technical solution include a significant overhang of the tool head relative to the carriage, which reduces the accuracy of the machined guides. The use of the machine involves the dismantling of all nodes located on the repaired guide bed.

A device for grinding guides of metal cutting machines is known according to information leaflet No. 278-83 of 08/05/1983 Central Scientific and Technical Research Center of Ulyanovsk, selected as a prototype.

It consists of a base fixed on a support of a longitudinal planing machine, a grinding head driven by a separate electric motor. A finger is located on the caliper, the base rotates around it. The base is clamped with two bolts moving along the annular groove of the machine support.

The selection of different types of grinding wheels with the rotation of the grinding device provides grinding of the surface located at any angle to the horizon.

The disadvantages of the prototype as well as the analogue include the need to disassemble the repaired machine and a special planing machine for grinding work.

The purpose of the utility model is to provide the possibility of processing the guides of the lathe bed directly on the machine, both with its disassembly and without disassembly, in particular, without removing the longitudinal support from the bed.

This goal is achieved in that the device contains a tool head mounted with the possibility of linear and angular positioning of the tool on the holder relative to the machined guide, the holder is located on the rack of the transverse table; the latter is installed in the guides of the longitudinal carriage, the latter is located on the machine bed on the internal auxiliary guides of the bed, the carriage is installed on the guides of the bed; a slide bar is mounted on the carriage, mating with the lower surfaces of the inner auxiliary rails; between the carriage and the slide bar installed gaskets, mounted, for example, on the carriage; on the holder there are two guides covering the rack; a screw pair is installed on the rack, and a strap with a groove for the annular groove made on the screw is mounted on the holder.

The lathe bed contains guides 1 and 2 for the longitudinal support of the machine, guides 3 and 4 for the tailstock; reverse surfaces

of which 5 and 6 are used to clamp the headstock on guides 3 and 4 of the clamping bar.

The stated essence is illustrated by the drawing, which shows:

Figure 1 - General view of the device;

Figure 2 is a top view;

Figure 3 - the mechanism of the screw pair;

Figure 4 - holder with a system of holes for the tool head.

During the operation of the machine, the guides 1 and 2 are subject to intense uneven wear, maximum at a distance of up to 1.5 meters from the front headstock of the machine; guides 3 and 4 practically do not wear out, since in the working position the tailstock is stationary. The device consists of a tool head 7 with a holder 8 mounted on the rack 9 of the table 10, the latter is mounted on the carriage 11 with four bolts 12. On the carriage 11 are made bearing surfaces 13 and 14, mating with guides 3 and 4 and responding to them. Between surfaces 13 and 14 there are measuring gaskets 15 mounted on the carriage 11, forming slip pairs of the strap 16 with surfaces 5 and 6. The strap 16 is attached to the carriage 11 with at least one bolt 17.

On the holder 8, guides 18 and 19 are fixed, covering the rack 9. On top of the rack 9 is a plate 20 with a threaded hole for the screw 21, and on the holder 8 there is a plate 22 with a groove for the annular groove 23 made on the end of the screw 21. On the rack 9 4 bolts 24 are installed, and grooves are made on the holder 8; this provides the possibility of rigid mounting of the holder 8 on the rack 9.

An axis 25 is installed at the free end of the holder 8 and holes 26 are made for bolts that are installed simultaneously in the holes of the base 27 of the tool head 7. The holes 26 are located at an angle of 45 degrees to each other. This provides alternate processing of the angular surfaces of the guide 1.

A different arrangement of holes 26 is possible depending on the profile of the guides being machined 1. On the table 10, an additional rack can be installed for machining the guide 2. The holder 8 in this case

mounted on an additional rack, the tool head 7 is located above the guide 2 with ensuring its grinding due to the selection of the required profile of the circle.

On the table 10, it is possible to make threaded holes for fixing the base 27 and the head 7. On the table 10, it is also possible to arrange a screw pair 28-29, similar to the mechanism of parts 20, 21, 22 and providing microfeed to the abrasive circle 30 of the tool head 7.

The carriage 11 is kinematically connected to the lead screw or shaft of the machine in any of the known ways, for example, by mounting a bracket with a nut or sleeve on the carriage.

The device operates in the following sequence.

The longitudinal support of the machine is dismantled from the outer guides of the bed, the carriage 11 is installed on the internal auxiliary guides 3 and 4. The slide plate 16 is bolted 17 to the carriage 11 until it stops in the gaskets 15, while there is a minimum gap between surfaces 5, 6 and the bar 16 within 0.01 mm.

The tool head 7 is installed in a position that ensures the alignment of the end face of the circle 30 with the machined plane of the guide 1.

The carriage 11 is kinematically connected to the lead screw.

Deepening of the rotating circle 30 into the machined plane is performed by a screw pair 28-29 in the extreme position of the carriage on the bed, i.e. on the worn part of the guide 1. Then, when the screw drive is turned on, the carriage 11 moves on the bed, grinding individual parts of the guide 1. The next deepening can be performed on the worn parts of the guide 1 with the screw 21.

In this sequence of operation of the tool head, the guide 1 will be grinded until sparking occurs over the entire length of the surface to be machined.

The depth of penetration of the circle 30 on a separate plane is fixed, then the head 7 is reset to grinding the second plane of the guide 1.

Changeover can be carried out by turning the tool head 7 or replacing the circle 30 when moving the holder 8 to the desired position, for example, by moving the table 10.

In these cases, additional holes and grooves can be provided on the table 10 and the holder 8, providing a rough reinstallation of the head 7. Fine adjustment will be made with screw grooves 20-21-22 or 28-29.

Resurfacing of the second surface of the guide 1 will be performed in the sequence described above. The depth of penetration for both surfaces should be the same, then it is assigned the same value for resurfacing the guide 2.

Setting circle 2 for the guide 2 can be carried out by turning the holder 8 and the head 7, or by installing an additional rack on the table 10. The grinding of the guide 2 is carried out in the above sequence.

The proposed device can be used without removing from the bed the longitudinal support of the caliper, using it as a drive for linear movement of the carriage 11 by connecting them with a rigid rod. In this case, the following options are possible:

- grinding only the guides of the bed located at the front headstock of the machine;

- alternately grinding the guides of the bed, divided into two sections: front, at the front headstock and rear - at the end of the bed. This device provides restoration of the guide rails of the bed depending on their wear without disassembling the machine when it is in the workplace in the workshop; while in some cases there is no need to disassemble the longitudinal and transverse calipers.

Claims (4)

1. A tool for processing working external guides of the lathe bed containing a tool head mounted on the holder with the possibility of linear and angular positioning of the tool on the holder, relative to the machined guide, the holder is located on the counter of the transverse table installed in the guides of the longitudinal carriage, the latter is located on the bed machine, characterized in that the carriage is installed on the internal auxiliary guides of the frame. 2. The device according to claim 1, characterized in that a slide rail is mounted on the carriage, mating with the lower surfaces of the inner auxiliary guides. 3. The device according to claims 1 and 2, characterized in that between the carriage and the slide bar there are gaskets mounted, for example, on the carriage. 4. The device according to claim 1, characterized in that a screw pair is installed on the machine, and a strap with a groove for an annular groove made on the screw is mounted on the holder.