Automatic device for locking tool-holders on lathes and machine tools

Abstract

An automatic device for locking of tool holders on lathes and machinery performing machining by chip removal, particularly suitable to be used on multi-spindle and single spindle CNC lathes, on transfer machines, milling centres of any kind and, in general, on all types of machine tools which perform machining by chip removal, comprises a support body anchored to the machine tool and surmounted bya plate, said device comprises, for each of said tool-holders, a pawl provided with a female truncated-cone recess, cooperating with a nut screw and moved automatically vertically to engage in contact with a truncated cone collar appendage (40) made in a recess in the rear. The movement in the vertical direction of the pawls is produced by means of individual motors, equipped with a shaft which protrudes from their lower face and engages to the upper end of said nut screw.

Description

technical field [0001] The invention relates to an automatic device for locking tool holders on lathes and machines performing machining by chip removal. [0002] More particularly, the invention relates to an automatic equipment that allows machining to be performed on CNC single or multi-spindle lathes, on continuous automatic working machines, on milling centers of any kind and in general by chip removal Fast and secure locking and unlocking of motorized or non-motorized toolholders on machine tools. Background technique [0003] It is known that in the case of mechanical machining performed using any kind of CNC machine tool, there is a frequent need to replace the various modules as required in obtaining the required workpiece. [0004] Repeated tool change operations involve downtime during which the operation of the machine is forcibly suspended for a given period of time; it is also necessary to consider the setup time at each tool change. In the case of mechanisms...

AI Technical Summary

Problems solved by technology

However, it has been found that, although functioning perfectly and being able to achieve said advantages, the mentioned device according to the present application has some disadvantages, which relate in particular to the operators involved in the replacement of the various tool holders

In fact, the operator has to operate in close contact with the machine, with the consequence of constantly soiling his / her hands due to the lubricants and refrigerants used in the production cycle, and in the case of drips and accidental sprays, substances may even hit other parts of the body and even the face

Also, given that this often involves operating with the arm straight and overhanging, the constant intervention on the tool with a wrench to suit locking and unlocking of the toolholder can prove inconvenient and laborious

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