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Cast pin

An outer tube and inner tube technology, which is applied in the field of cooling type casting pins, can solve the problem that it is difficult to set an annular groove 102, etc., and achieve the effects of good machining accuracy, high thermal conductivity, and good thermal conductivity.

Inactive Publication Date: 2014-01-01
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In short, it is difficult to set the annular groove 102 near the tip 107 of the outer pin 100 (the part away from the inlet 106).
[0006] However, there are situations where it is also necessary to set the annular groove 102 near the top end 107 of the casting pin

Method used

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Embodiment Construction

[0050] Next, preferred embodiments of the present invention will be described based on the drawings. based on Figure 1 ~ Figure 4 Illustrate the invention of the first and second aspects of the present invention, based on Figure 5 ~ Figure 8 Illustrate the invention of the third and fourth aspects of the present invention, based on Figure 9 ~ Figure 14 Illustrate the invention of the fifth aspect of the present invention, based on Figure 15 ~ Figure 17 The sixth invention of the present invention will be described.

[0051] 【Example】

[0052] Such as figure 1 As shown, the casting pin 10 includes: an outer tube 11, which is formed in a form in which the top end of a hollow body is blocked; an inner tube 20, which is inserted so that the outer peripheral surface 21 is in contact with the inner peripheral surface 12 of the outer tube 11 Outer tube 11; cooling tube 30, which keeps the outer peripheral surface 33 and the inner peripheral surface 23 of the inner tube 20 a...

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Abstract

Disclosed is a cast pin equipped with circular grooves which are provided at any location. The cast pin (10) is equipped with: an outer tube (11) in the shape of a hollow body the tip of which is closed; an inner tube (20) inserted into the outer tube (11); and a cooling medium pipe (30) that is inserted into the inner tube (20) and supplies a cooling medium to the interior of the inner tube (20). Three circular grooves (22) are formed at prescribed intervals in the longitudinal direction, for example, on the outer circumferential surface (21) of the inner tube (20). The circular grooves (22) are formed in the outer circumferential surface (21) by applying a cutting tool from the radial outward direction of the inner tube (20).

Description

technical field [0001] The present invention relates to an improved cooling type casting pin (鋳抜ききききききき). Background technique [0002] Casting pins are used to create casting holes (鋳抜き洞) in the casting at the same time as casting. Compared with drilling a hole in a casting by machining with a drill or the like, the machining allowance of the casting hole is smaller, the man-hour of machining can be shortened, and the yield of the material is also better. [0003] It should be noted that since the cast pin is inserted into the cavity and surrounded by high-temperature molten metal, the heat load received by the cast pin increases. As a countermeasure, a cooling type casting pin cooled by a coolant such as water is recommended (for example, refer to Patent Document 1). Figure 18 A cross section of an outer pin among the cast pins disclosed in Patent Document 1 is shown. [0004] refer to Figure 18 , The outer pin 100 is provided with an annular groove 102 on its inner pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D17/22B22C9/06B22C9/10
CPCB22D17/2218B22C9/103B22C9/106B22C9/101B22C9/10B22C9/06
Inventor 柴田清池上明宏沼田雅之
Owner HONDA MOTOR CO LTD