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Clamp for machining hole of cylinder and hole machining method

A technology of hole processing and cylinder block, which is applied in the direction of manufacturing tools, metal processing equipment, honing machine tools, etc., can solve the problems of difficult cone shape and high cost, and achieve the effect of low cost and high precision finishing

Active Publication Date: 2007-01-10
NISSAN MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, in the technique described in the above-mentioned Patent Document 1, it is extremely difficult to produce a tapered shape with stable precision, which leads to high cost, and improvement is required.

Method used

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  • Clamp for machining hole of cylinder and hole machining method
  • Clamp for machining hole of cylinder and hole machining method
  • Clamp for machining hole of cylinder and hole machining method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] Embodiments of the present invention will be described below with reference to the drawings.

[0036] figure 1 It is a perspective view showing the virtual cylinder head 11 of the first embodiment of the present invention, figure 2 From figure 1 The bottom view seen below the virtual cylinder head 11, image 3 yes figure 2 Enlarged sectional view of A-A. But when image 3 , shows the state where the virtual cylinder head 11 is placed on the cylinder block 5 .

[0037] Replace the above-mentioned with the above-mentioned virtual cylinder head 11 Figure 17 The cylinder head 3 and the cylinder gasket 7 shown are mounted on the cylinder head mounting surface 5a of the cylinder block 5 with the bolts 9, and the cylinder barrel 1 is subjected to either only honing processing or boring processing. After that, honing is carried out for finishing.

[0038] The virtual cylinder head 11 is provided with a through hole 15 corresponding to the cylinder tube 1 of the cyli...

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PUM

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Abstract

A cylinder bore 1 of a cylinder block 5 are processed under a condition that a dummy head 11 instead of the cylinder head is mounted on a cylinder head mounting face 5a of the cylinder block 5. A bead part 23 projecting toward the cylinder head 5 is attached to the dummy head 11 at a portion opposed to a peripheral edge of the cylinder bore 1, and a recessed part 25 is installed outside the bead part 23. When the dummy head 11 is mounted on the cylinder block 5 using a bolt, a force acting between the bead part 23 and the cylinder block 5 controls deformation of the cylinder block 5 by pressing and elastically deforming a dummy head body 13 to the bead part 23 by an actuation of the recessed part 25.

Description

technical field [0001] The present invention relates to a jig for hole processing of a cylinder block and a hole processing method. The inner surface of the cylinder barrel of the cylinder block is processed under the condition that a dummy cylinder head replacing the cylinder head is installed on the cylinder head mounting surface of the cylinder block. Background technique [0002] Since the cylinder bore of the cylinder block is an important part that determines the performance of the engine, it is required to perform high-precision finishing (honing) on ​​the roundness and cylindricity as the shape accuracy. [0003] However, if Figure 17 As shown, even if the single cylinder 1 is finished with high precision, since the engine has a cylinder gasket 7 sandwiched between the cylinder head 3 and the cylinder block 5 and is tightened by bolts 9, the cylinder 1 It will also pass through the bolts 9 configured around it, such as Figure 18 As shown by the arrow A in , it is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B33/02
Inventor 铃木清久问注所隆行村田聪
Owner NISSAN MOTOR CO LTD