DE2557029A1 - Lathe with spindle box and guide bed on base - has common support and channels for coolant for temp.control - Google Patents

Abstract

The lathe has a base on which is supported a spindle box and a guide bed for th e slide. The spindle box (3) and the bed are arranged separately from each other on a common support (2) of high rigidity and low thermal conductivity. There are channels for coolant flow for maintaining the temperature of the common support (2). In this way the support temperature can be held constant to compensate temperature changes in the spindle box. The lathe is supported and anchored on a concrete support. The spindle box (3) is driven from a main gearbox (8) which is arranged on the support (2). A flat disc (6) is adjustable on a sliding carriage (5) advanced by the feed mechanism.

Description

Lathe with a pedestal, one of these

carried headstock and guide bed for the bed slide Die The invention relates to a lathe with a base, one carried by the latter Spindle box and guide bed for the bed slide. Usually these are parts made of cast iron or steel @ and by screws and other fasteners firmly connected. The temperatures in the headstock are quite different on, which can be significantly higher than those of the other machine parts. they are in particular on the number of main lockers, the load and, when used of hot clutches, depending on the switching frequency. With the high coefficient of thermal conductivity The heat developed by metals is very similar to that of the headstock connected guide bed over. The associated thermal expansions arise Displacements between the spindle box and the bed slide guide and thus voull Bed sledge or cross sledge mounted on it and often not connected to it Tool for the axis of rotation. Because these deviations from the different heat state are dependent, this can only result in inaccuracies in the workpiece difficult to fix.

In order to eliminate these disadvantages, it is proposed according to the invention, Headstock and bed separated from each other on a common high-rigidity carrier and lower thermal conductivity. This leaves the effects of the Heat in the Spinuel box is essentially limited to this. Here are the consequences the thermal expansion easier to fix if the headstock is in a known manner is attached so that the thermal expansions are essentially tangential Affect the direction to the tool tip.

It is known that DPS 2 250 029, the support body made of concrete, but in this case all the assemblies in the cutting force flow are of one common element @ added metal body, which is mounted on the support body made of concrete. The heat transfer from the headstock to the guide hett and the slide mounted on it unaffected.

After a detail of the invention it is proposed in which common carrier channels for influencing the temperature of the common carrier to arrange. This gives the possibility of having a particularly high temperature To keep the dimensions constant or to adapt them to the special circumstances.

The drawing shows an exemplary embodiment of the subject matter of the invention shown schematically, namely Fig. 1 shows a side view of the machine Fig. Fig. 2 is a plan view of the lathe in smaller size anchored a carrier 2 made of concrete, the headstock 3 and a Bed 4 are arranged on the carrier 2 separately from one another.

Towards your bed 11 sliding bed slide 5 and ciii on him sliding facing slide o are from a de-associated feed gear 7 indicated in the usual way.

The headstock 3 is from the main gear 8, which is on your carrier 2 is arranged, driven.

In order to ensure that the contact surfaces in Beam 2, which is made of reinforced concrete, for example, for the headstock 3 and your bed 4 to create are cast in the latter metal plates 9 and lo.

In order to measure the temperature of the carrier 2, e.g. in the vicinity of the heat radiating headstock 3 can affect zii are in the carrier 2 channels 11 arranged for receiving pipelines through which a medium flows.

Claims (2)

P a t e n t a n s p r ü c h e 1. Lathe with a base, a headstock and guide bed for the bed slide carried by this, d u r c h e k e n n n n z e i c h n e t that the headstock (3) and bed (4) from each other Bred on a common carrier 2) high rigidity and low thermal conductivity are arranged. 2. Lathe according to claim 1, d a d u r c h g e k e n n z e i c h n e t that in the common carrier (2) channels (11) for influencing the Temperature of the common carrier (2) are arranged.