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Ceramic inner thread machining mold

A technology of threads and thread segments, which is applied in the field of C/SiC composite ceramic pre-embedded external thread molds, can solve problems such as damage, tool wear, and ceramic slag, and achieve the effects of reducing metal residue, slow flow speed, and ensuring cleanliness

Active Publication Date: 2015-09-30
重庆新锐科技服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In "Research on Tapping Technology for Small Threaded Hole of Fiber Reinforced C / SiC Composite Ceramic Materials", the improvement of the tapping process of fiber reinforced C / SiC composite ceramic materials is proposed from the perspective of drill bit selection, and it is also pointed out that due to the high hardness of ceramics, In the process of drilling and processing threads, tool wear and ceramic slag or even damage will occur due to the local pressure of the contact between the tool and ceramics. At the same time, the small internal thread processing pointed out in the literature is processed by drilling and tapping ceramics. , serious wear on the tool during processing

Method used

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  • Ceramic inner thread machining mold
  • Ceramic inner thread machining mold
  • Ceramic inner thread machining mold

Examples

Experimental program
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Effect test

Embodiment 1

[0017] The structure of the C / SiC composite ceramic pre-embedded external thread mold of the present invention is as follows: figure 1 As shown, the lower end of the external thread mold 2 is an external thread segment 21, the screw-in end of the external thread segment 21 is chamfered, a flat handle 22 protrudes above the external thread segment 21, and the C / SiC composite ceramics are pre-embedded outside. The schematic diagram of the structure of the thread mold during use is as follows figure 2 As shown, the external thread mold 2 is screwed into the thread to be processed of the ceramic mold 1 to be sintered, and a threaded hole is formed during the process of screwing the external thread mold 2 into the ceramic mold 1 to be sintered.

Embodiment 2

[0019] The structure of the C / SiC composite ceramic pre-embedded external thread mold of the present invention is as follows: image 3 As shown, the external thread mold 2 in this embodiment has a boss 23 between the external thread belt and the handle, the boss 23 is an annular boss, and an arc transition is adopted at the intersection of the two sides of the boss. Driven by the rotation of the external thread segment 21, such as Figure 4 As shown, a countersunk hole can be formed on the ceramic mold, and at the same time, since the two intersecting surfaces of the countersunk hole are arc transitions, the local stress in the sintering molding process can be reduced, and the molding quality can be improved.

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Abstract

The invention discloses a C / SiC composite ceramic pre-buried thread mold and relates to a thread forming mold. The thread forming mold is used for a to-be machined position of an inner thread of ceramic to be sintered and comprises a thread mold body, the thread mold body is an aluminum alloy mold body, the thread mold body comprises a thread section and a handle section, the thread section is located on the to-be machined position of the thread of the ceramic model to be sintered, and the handle section of the thread mold body protrudes out of the ceramic model to be sintered in the axial direction, so that by means of the C / SiC composite ceramic pre-buried thread mold, the abrasion to a cutter can be lowered and the thread forming progress and the quality can be improved in the ceramic thread machining.

Description

technical field [0001] The invention relates to a thread forming die, in particular to a C / SiC composite ceramic pre-embedded external thread die. Background technique [0002] During the processing of C / SiC composite ceramics, there are serious problems such as serious slag loss, difficult screw forming, and low processing pass rate. In the second issue of the domestic journal "Manufacturing Technology Research" in April 2015, "Fiber Reinforced C / SiC Composite Ceramic Materials Small Threaded Hole Tapping Process Research" pointed out that through a large number of process tests, the small thread tapping of non-metallic materials was explored. The changing law of thread forming, from the determination of process plan, selection of drill bit material, selection of tap material, tap tapping force, etc., summarizes the small threaded hole tapping on non-metal fiber reinforced C / SiC ceramic materials. The technological processing method improves the qualified rate of tapping o...

Claims

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Application Information

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IPC IPC(8): B28B7/28B28B11/08
CPCB28B7/28B28B11/0854
Inventor 唐昌兵
Owner 重庆新锐科技服务有限公司
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