Accessory head tension device and machine tool

Abstract

The invention relates to the field of a machine tool and discloses an accessory head tension device and a machine tool. The accessory head tension device comprises a blind rivet, a cylinder, a piston rod, a floating piston and a fixed piston, wherein one end of the blind rivet is connected with an accessory head, the cylinder is longitudinally arranged at the tail part of a ram, the piston rod is arranged in the cylinder, the top end of the piston rod is provided with a one-piece piston, a first coil cavity is formed between the top side of the one-piece piston and the top of the cylinder, the bottom end of the piston rod is connected with the other end of the blind rivet through a tension mechanism, the floating piston is sleeved on the piston rod in a sliding way, a second cavity is formed between the top side of the floating piston rod and the bottom side of the one-piece piston, the top side of the floating piston is limited by the steps in the cylinder, the fixed piston is movably arranged on the piston rod, a third cavity is formed between the top side of the fixed piston and the bottom side of the floating piston, and the fixed piston is fixed with the cylinder. The accessory head tension device can enable the accessory head to be in tensioned, divided and fully-loose states so as to be suitable for the use demands.

Description

technical field [0001] The invention relates to the technical field of machine tools, in particular to an attachment head tensioning device and a machine tool. Background technique [0002] At present, there are mainly two ways of loading the attachment head of the gantry machine tool: manual loading and automatic loading. Manual clamping is to install the accessory head on the end surface of the main shaft by workers, and then fasten it with screws. This method has high work intensity, low efficiency, and large errors, which does not conform to the development trend of automatic machine tools. [0003] The automatic clamping adopts stacked springs or oil cylinders to tighten, which can realize automatic clamping, but its oil cylinder generally only has two working positions, and the attachment head can only realize two states of clamping and loosening, which cannot be well adapted to the needs of use. [0004] Therefore, how to improve the existing way of tightening the at...

AI Technical Summary

Problems solved by technology

Manual clamping is to install the accessory head on the end surface of the spindle by the worker, and then fasten it with screws. This method has high work intensity, low efficiency, and large error, which does not conform to the development trend of automatic machine tools.

[0003] The automatic clamping adopts stacked springs or oil cylinders to tighten, which can realize automatic clamping, but the oil cylinder generally only has two working positions, and the attachment head can only realize two states of clamping and loosening, which cannot be well adapted to the needs of use.

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