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Expanding and retracting type positioning mandrel assembly

A technology for positioning mandrels and positioning shafts, which is applied in the direction of expanding mandrels, etc., can solve the problems of decreased precision, inability to meet people's use requirements, and inclined thread taper shafts, etc., to achieve low production costs, simple structure, and avoidance of inclination. Effect

Pending Publication Date: 2021-03-16
GUANGXI YUCHAI MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing engine component positioning mechanism has certain disadvantages in use. The existing workpiece positioning mechanism usually uses a threaded tapered shaft at one end for positioning. When the threaded tapered shaft is tightened, the threaded tapered shaft is prone to inclination. The accuracy of positioning is reduced, which cannot meet people's requirements. Therefore, we propose an expansion and retraction positioning mandrel assembly

Method used

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  • Expanding and retracting type positioning mandrel assembly
  • Expanding and retracting type positioning mandrel assembly
  • Expanding and retracting type positioning mandrel assembly

Examples

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0025] In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, so as to Specific orientation configurations and operations, therefore, are not to be construed as limitations on the invention.

[0026] An expansion-openi...

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PUM

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Abstract

The invention discloses an expanding and retracting type positioning mandrel assembly which comprises a positioning shaft sleeve and an expanding mandrel, wherein a workpiece installing opening and apositioning channel are formed in the positioning shaft sleeve, and the positioning channel communicates with the workpiece installing opening; and the expanding mandrel is used for positioning a workpiece, and the lower end of the expanding mandrel is movably mounted in the positioning channel. The expanding and retracting type positioning mandrel assembly is simple in structure, positioning of the workpiece can be achieved by rotating the expanding mandrel to change the position of the expanding mandrel, and use is convenient; and during use, radial centering shafts are extruded by the elastic force of spring pressing sheets, the radial centering shafts drive steel balls to extrude the expanding mandrel to realize centering positioning of the expanding mandrel, accordingly, inclination of the expanding mandrel is avoided, the positioning precision is higher, the whole expanding and retracting type positioning mandrel assembly is small and exquisite in structure, simple, low in production cost and practical and a better application prospect is brought.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to an expansion and retraction positioning mandrel assembly. Background technique [0002] The car engine is the device that provides power for the car. It is the heart of the car and determines the power, economy, stability and environmental protection of the car. With the progress of the times, the engine has been widely used. There are many mechanisms on the engine. In order to improve the machining accuracy of engine components, some engine component positioning mechanisms have been invented; [0003] The existing engine component positioning mechanism has certain disadvantages in use. The existing workpiece positioning mechanism usually uses a threaded tapered shaft at one end for positioning. When the threaded tapered shaft is tightened, the threaded tapered shaft is prone to inclination. As a result, the accuracy of positioning is reduced, which cannot meet people's requirem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B31/40
CPCB23B31/404
Inventor 宁杰唐舰艇
Owner GUANGXI YUCHAI MASCH CO LTD
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