SU659351A1 - Heavy-duty machine tool work table mounting/dismounting arrangement - Google Patents

Description

one

The invention relates to the field of machine tool construction, in particular, to the assembly and disassembly of tables of heavy machines equipped with a worm-and-pinion gear for reciprocating movement during operation.

Devices for mounting and dismounting such tables are known, which contain a mechanism for connecting (disconnecting) the elements of the worm gear rack 1.

However, when assembling tables using known means, a worm-gear rack may be inoperative due to shock, distortion, excessive edge pressure.

The purpose of the invention is to preserve the transmission operability.

For this, in the proposed device, the mechanism for connecting (disconnecting) the transmission elements is made in the form of a bracket with guide rails and mounted on them with the possibility of movement in the vertical and horizontal directions of a worm gear equipped with a stop.

FIG. 1 shows the proposed device; in fig. 2 - the same, top view; in fig. 3 shows section A-A in FIG. one; on fng.

2

4 - table, different positions during assembly and disassembly.

A Kronschtein 1 with guide bars 2 is mounted directly on the base surfaces prepared on the table 3. The screw rack 4 is movably mounted on the guide bars 2 rigidly connected to the bracket 1 2. To restrict the movement of the rod 4 along the guide bars 2, a rigid stop is used 5. The stop 5 is mounted and fixed in a certain position on the rail 4, on top is the support flap 6. The stop strip / with bolts 8 is intended to firmly restrict

movement of the rail 4 along the smallpox rotation of the screw 9 when dragging the table.

The mounting of the table using the device described is carried out in the following order. After installing the table 3 with the rails 10 on the stanfny (not shown) in the immediate vicinity of the end face of the screw at a distance X, the bracket 1 with the guide plates 2 is mounted on the base surfaces of the table and fixed (see Fig. 4,

put 1). The screw of the rail 4 with the rigidly attached stop 5 is manually engaged by means of a lifting mechanism into the engagement with the screw 9 and at the same time it finds on the guide rails 2 so that

to be able to install stop3

bar 7 with bolts 8, after which the bearing cap 6 is installed and secured. Turning on the rotation of the screw 9 from the button on the machine control panel, the screw rail 4 with the stop 5 is moved along the guide bars 2 to the table 3 by a distance equal to one step of the screw loop within the required tolerance, i.e. it is necessary to ensure between the rails 10 of the table and the device is a single screw surface within the tolerances. A stop 5 is mounted on the same size. After that, the worm rail 4 is clamped with bolts 8 (see Fig. 4, position II). The reversal rotation of the screw, the table 3 is moved to the working position, after which the device with the rack 4 is disengaged and can be dismantled.

The disassembly of the table is carried out as follows. At the end of the table 3, a bracket 1 with guide bars 2 is mounted on the base surfaces and fixed. Worm gear 4 with a fixedly attached stop 5 is manually or using a lifting mechanism lowered onto guide rails 2 and moved to the end of the table until the fixed stop 5 touches the bracket 1. After that, the support cover 6 is attached and the worm 4 is bolted 8 through the stop bar 7 (see Fig. 4, position 1P). By activating the rotation of the screw from the button on the machine control panel, the table is moved for removal. Before taking off

It is necessary to loosen the bolts 8, remove the stop bar 7 and the cover 6. Rotate the screw 9 to remove the screw 4 from the bracket 1 (see Fig. 4, position I). After that, remove the worm rail 4 and the bracket 1. Now the table can be removed from the bed.

The use of a device for mounting and dismounting a table of a heavy metal-cutting machine equipped with a worm-gear rack with hydrostatic lubrication ensures that the working elements of the gear, including the polymer layer on the screw

surfaces of the teeth of the rails.

Claims (1)

Invention Formula A device for mounting and dismounting a table of a heavy metal-cutting machine equipped with a worm-rack and pinion gear, comprising a mechanism for connecting (disconnecting) the transmission elements, which, in order to preserve the efficiency of the transmission, the mechanism for connecting (disconnecting) its elements is made view of a bracket with guide bars and mounted on them with the possibility of moving in vertical and horizontal directions of a worm rail, equipped with a stop. Sources of information taken into account in the examination 1. Guide to the longitudinal planing machines. Part 1, Minsk, 1972, p. 46. 4JUi. Z Atpi / g. J J L t