Internal expanding type centering fixture for turning large-scale sleeve parts

A technology of centering fixtures and sleeves, used in manufacturing tools, metal processing equipment, turning equipment, etc., can solve the problems of difficult to guarantee the machining accuracy of workpieces, time-consuming and laborious, and save processing procedures and time. The effect of improved accuracy

CN102211213AActive Publication Date: 2011-10-12HUDONG HEAVY MACHINERY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2011-10-12

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Abstract

The invention discloses an internal expanding type centering fixture for large-scale sleeve parts. The internal expanding type centering fixture comprises a chuck fixture and a tail shaft base fixture which have a same shaft axis, wherein the chuck fixture comprises a fixture body, a cone body, a thread bushing and a spring base; the tail shaft base fixture comprises an elastic body, a cone body,a tail shaft, an expanding linking sleeve and an angular contact ball bearing; and the cone body is axially tensioned through bolts mounted on the fixture body or elastic body and the thread bushing on the cone body, so as to expand an elastic part of the fixture body or elastic body along the radial direction and tightly expand a workpiece. The internal expanding type centering fixture is suitable for processing the sleeve parts on a horizontal lathe. By once clamping and positioning the sleeve parts, the purpose of processing an external circle and two end faces of a cylinder jacket of a marine diesel can be realized. The internal expanding type centering fixture is characterized by compact structure, high rotating speed, high axiality, convenience in use and assembly, and the like. Theworkpiece is prevented from being repeatedly mounted on the lathe, so that the workpiece is processed more smoothly.
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Description

technical field

[0001] The invention relates to the field of machining, in particular to an internal expansion centering fixture suitable for clamping and overall processing of cylinder liners of marine low-speed diesel engines. Background technique

[0002] In the machining industry, it is often encountered that the workpiece cannot be processed as a whole due to the clamping during lathe processing. If a small part is turned around, it is nothing more than recalibration, but if it is a large part, the turnaround involves not only the part resetting Calibration, but also need to cooperate with the driver to get on the car and adjust the related fixtures. Taking the machining of the outer circle and end face of the cylinder liner of a marine low-speed diesel engine as an example, the conventional method is: after the inner hole of the cylinder liner is bored, the cover is hoisted on both ends of the cylinder liner by the crane, and then the cylinder is lifted by the crane. ...

Examples

Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention should not be limited thereto.

[0024] Please see first figure 1 , figure 2 and image 3 , figure 1 It is a schematic diagram of the structure of the clamping chuck clamp in the internal expansion centering clamp for machining large-scale sleeve parts of the present invention, and it is also image 3 A cross-sectional view of the ABCD in, figure 2 It is a structural schematic diagram of the tail shaft seat fixture in the internal expansion centering fixture of the large-scale sleeve parts of the car processing of the present invention, image 3 It is a side view of the clamping chuck clamp in the internal expansion centering clamp for machining large sleeve parts of the present invention. As shown in the figure, an internal expansion centering fixture for machining large sleeve parts. The...