FR2480657A1 - Lathe incorporating conventional sections - uses square hollow section element to mount headstock spindle and motor on inverted channel section bed - Google Patents

Abstract

The machine is constructed of materials in readily available forms, typically comprising a lathe with an inverted channel section bed mounted on transverse spreader rails. Slide tracks are bolted to the bed together with the headstock substructure in square hollow section. The headstock is drilled to locate a spindle on bearings of the simple journal or cased roller variety, also locating the spindle drive motor on an adaptor. The bed is drilled to a grid pattern to permit the fixing of the headstock in alternative positions by sleeved bolts. A tail stock with a freely rotatable barrel may be provided, barrel translation being effected by a handwheel and a screw engaging nut.

Description

The present invention relates to machines such
that: lathe, milling machine, aldssuse, drilling machine, etc ..., and
their method of construction.

Lss known machines of this kind are built
according to a conventional mode using components
specially created for a machine model following
expensive and inflexible procXdds, such as parts
foundries, forging, stamping, etc ...

The construction method according to the present invention
makes maximum use of products or components
known and current such as profiles, tubes, beams,
angles, stretched, rings, etc ...

These materials in semi-finished products exist in
trade and are generally standardized.

The attached drawing shows an example of rXalisation
of a turn according to this process.

Fig. 1 shows the "Doll" 1 compass of a section
card or rectangular section tube bored in 2 for
receive the 3-door spindle by bearings or bearings mounted or not in attached cages.

On its underside, the dolls have 4 holes
can receive standard sen rings or barrels
trages 5.

Fig. 2 shows that the bench 6 is composed of profiles
U-section or square or rectangular tube suitable
completely ribbed, resting on legs 7 welded or fixed
contributing to the rigidity of the whole.

On this bench are fixed slides 8 which can
be conventional type cast iron or steel etc ...

 Fig. 3 shows the method of assembling the various elements or sub-assemblies together, for example the headstock 1 is fixed to the bench 6 by means of bolts 9 passing through rings 5.

The tailstock made according to the same principles and fixed in the same way on the bench, with the particularity of having a "cannon" free in rotation controlled in displacement.

axially using a thread 12 secured to the barrel and a nut 13 secured to the body against the tip.

A steering wheel secured to the barrel moves it. In addition to its simplicity, this device has the advantage of ensuring user safety and the protection of tools in the event of engagement,
Tool trolleys built and fixed using the same technique are the usual type on these machines.

On this assembly and according to the method of construction described above can be mounted all common accessories such as: tool holder, glasses, control screw, etc ...

 This construction method is applicable to all kinds of known and future machines which are particular to the manufacture of combined machines because the mounting and centering references are arranged so that the elements and sub-assemblies can be interchangeable and mounted in all useful positions.

 Machines built according to this process intended for the use of. professional or amateur can because of their ease of assembly be delivered to the user in the form of a sub-assembly or complete set of spare parts and assembled by the latter.

 The drive of such a machine can be done by a motor 14 fixed to the headstock by an adapter 15.

 The engine is then easily accessible and removable.

Claims (5)

t CLAIMS  1. Machine tool which may consist, for example, of a lathe, a milling machine. a boring machine, characterized in that it consists of a bench  (6) composed of profiles resting on welded or fixed legs, contributing to the rigidity of the assembly. On this bench are fixed slides (8) of  conventional type and a subset of work at least composed of a  section of tube of square or rectangular section, reamed to receive a spindle carried by bearings or bearings mounted or not in attached casings, said spindle being entrained using a motor fixed on an adapter. The assembly between elements or sub-assemblies on the bench being carried out by means of bolts passing through centering rings. Such a construction method allows the production of sub-assemblies of parts to be mounted by the user in all positions necessary in space for the composition of the machine. Each sub-assembly using common standard elements such as in particular: tubes, drawn, solid or hollow profiles, angles.  2. Machine according to claim 1 intended for use in a lathe characterized in that it comprises a first sub-assembly consisting of a spindle holder doll and another sub-assembly forming a tailstock comprising a barrel ( 11) free in rotation ensuring safety of operation and protection of tools, controlled in axial displacement using a flywheel acting on a screw secured to the barrel and a nut fixed to the body of the tailstock.  3. Machine according to claim 1 characterized in that the bench (6) is composed of U-shaped profiles. 4. Machine according to claim 1 characterized in that the doll  (1) is composed from a section of tube with a square or rectangular section and machined so as to receive a spindle (3).  5. Machine according to claim 1 characterized in that the bench can receive with the same fixing means as the other sub-assemblies, a set of crossed carriages.