Built-in hydraulic clamping chuck for spline cold rolling machine tool and assembly method

Abstract

The invention belongs to the technical field of machine manufacturing and discloses a built-in hydraulic clamping chuck used for a spline cold rolling machine tool and an assembly machine. The built-in hydraulic clamping chuck comprises a flange positioning installation component, an axial positioning radial elastic clamping component, a connecting component and a movable center component. The movable center component is located at the central part of the built-in hydraulic clamping chuck; the left end of the movable center component is provided with the axial positioning radial elastic clamping component; the flange positioning installation component is arranged outside the left end of the movable center component; the flange positioning installation component is in threaded screwed connection with the axial positioning radial elastic clamping component by the connecting component; the connecting component is located outside the right end of the chuck. According to the built-in hydraulic clamping chuck disclosed by the invention, not only can accurate axial positioning be realized but also the uncertainty of the strength of a clamping force can be eliminated by using hydraulic clamping. The clamping force is stable and reliable. Moreover, the built-in hydraulic clamping chuck has the advantages that the structure is compact, the occupied length of a machine tool slide guide is small, and the processing range of the machine tool is broadened. The built-in hydraulic clamping chuck is easy to manufacture and install, and is very good in use value.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing, and in particular relates to a built-in hydraulic clamping chuck and an assembly method for a spline cold rolling machine tool. Said hydraulic clamping chuck means that the clamping of the chuck adopts an external hydraulic clamping method, and said built-in chuck means that the main components of the chuck are located in the spindle hole of the machine tool; The chuck assembly method mentioned above refers to the method of assembling together after the parts of the chucks are manufactured. Background technique [0002] 1. Introduction to the function and principle of cold rolling [0003] The cold rolling machine tool described in the present invention refers to a machine tool that uses cold rolling process to process external splines on shaft parts. Cold rolling processing is forming processing. The wheel strikes the workpiece several times to cause plastic deformation of the...

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Problems solved by technology

[0017] 1. According to the above, the elastic tip used in the chuck used by the cold rolling machine tool only acts as a buffer, and still uses the center hole for axial positioning. The size of the center hole of the workpiece directly affects the axial position of the workpiece. When the center hole is large The workpiece is on the right, and the workpiece is on the left when the center hole is small, so the axial positioning accuracy is poor, and the difference between the left and right axial positions of the workpiece exceeds 1 mm;

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