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Piston plugging jig and method

A technology of pistons and fixtures, applied in hand-held tools, manufacturing tools, workpiece clamping devices, etc., can solve problems such as high labor consumption

Inactive Publication Date: 2006-05-10
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, although said technique can prevent the piston ring from being caught or damaged by the cylinder liner to some extent, the disadvantage of this technique is that it still takes a lot of labor to install parts such as piston rings

Method used

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  • Piston plugging jig and method
  • Piston plugging jig and method
  • Piston plugging jig and method

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Embodiment Construction

[0021] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Such as Figure 7 As shown, the improvement of the piston insertion jig of the present invention is an auxiliary jig for inserting the piston P of a small piston assembly Q into the piston sleeve S of a cylinder B. In the piston assembly Q, a crankshaft C, A connecting rod R and a piston P are connected together, and in the cylinder block B, a half of a crankcase and a cylinder are integrally installed together. In this way, the workbench can conveniently prevent the piston ring Pr from being stuck or damaged by the cylinder liner S.

[0022] That is, as shown in FIGS. 1 to 3, the present piston insertion jig 1 has a positioning plate 2 for positioning it at a predetermined position in the crankcase, and a guide cylinder 3 for guiding the insertion of the piston P. As shown in FIG. Once the positioning plate 2 is positioned at a predetermined position, t...

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Abstract

In order to insert a piston P of a small piston assembly Q into a cylinder liner S, the present invention provides a piston insertion jig. The piston insertion jig includes a guide cylinder 3 for guiding the piston P into the cylinder liner S, and a positioning plate 2 integrally formed on the guide cylinder 3 . The positioning plate 2 has a positioning hole 2h allowing the axis of the piston P to coincide with the axis of the cylinder liner S. As shown in FIG. The positioning hole 2h cooperates with the positioning pin n on the cylinder B. A slope 3t for reducing the diameter of the piston ring Pr is arranged on the guide cylinder 3 . On each side of the positioning plate 2 and the guide cylinder 3, openings 2k and 3k having a width larger than that of the connecting rod are formed, respectively. As a result, when the piston of the small piston assembly is inserted into the cylinder liner, it is possible to prevent the cylinder liner from jamming or damaging the piston rings, and at the same time, work efficiency is improved.

Description

technical field [0001] The invention relates to a fixture for inserting a piston assembly integrally connected with a piston, a crankshaft and a connecting rod into a cylinder liner. Background technique [0002] In the assembly method commonly used in motorcycles, a small piston assembly, in which the piston is integrally connected to the crankshaft and connecting rod, is loaded into the cylinder block. Such as Figure 8 As shown, the cylinder block B is usually fixed on a table, and the axis of the cylinder liner S is in the vertical direction. The operator grasps the crankshaft C and inserts the piston P into the cylinder liner S by making the axis of the piston P vertical, the operator moves the crankshaft C vertically several times to fit the piston rings Pr into the cylinder liner S. However, it is difficult to vertically insert the piston P into the cylinder liner S by this method. And the diameter of the piston ring Pr is slightly larger tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B11/02B25B27/02
Inventor 樱井仁朗
Owner HONDA MOTOR CO LTD