CN211448549U - Improved structure of thread form of rock drilling tool - Google Patents
Improved structure of thread form of rock drilling tool Download PDFInfo
- Publication number
- CN211448549U CN211448549U CN202020031500.2U CN202020031500U CN211448549U CN 211448549 U CN211448549 U CN 211448549U CN 202020031500 U CN202020031500 U CN 202020031500U CN 211448549 U CN211448549 U CN 211448549U
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- thread
- drilling tool
- screw thread
- profile
- rock drilling
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- 238000005553 drilling Methods 0.000 title claims abstract description 19
- 239000011435 rock Substances 0.000 title claims abstract description 11
- 230000000694 effects Effects 0.000 abstract description 2
- 230000005641 tunneling Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a rock drilling tool screw thread profile improves structure, it relates to a drilling tool screw thread profile structure. Including thread 1, thread 1's first radius R1 be 6mm, second radius R2 is 6mm, pitch P is 13.5mm, the tooth depth H is 1.8mm, the big footpath D of screw thread is 32.5mm, through the adjustment, the sectional area at thread profile convex part has increased nearly 1/4 with original comparing, profile of tooth contained angle B reduces to some extent simultaneously, has properly alleviated the problem of the difficulty of breaking out. The utility model provides a volatile problem of effect of tunnelling drilling tool screw thread for the rock drilling effectively increases the screw thread wearing feature, solves the difficult problem of breaking out, has improved the life of tunnelling drilling tool.
Description
Technical Field
The utility model relates to a drilling tool screw thread profile structure, concretely relates to drilling tool screw thread profile improves structure.
Background
GB/T6482 and 2007 rock drilling use R32 wave thread, the thread is used for driving drill rod and drill bit connection, mainly bears impact load and torque, the thread is difficult to break out, easy to wear out failure and fracture failure. The thread structure of the original thread (as shown in figure 1), wherein the wave radius R1=5.5mm, R2=6mm, the thread pitch P =12.7mm, the thread depth H =1.5mm, and the thread major diameter D =31.34mm, in order to increase the wear resistance of the thread, under the premise that the heat treatment mode and the hardness of the thread are the same, the cross section area of the thread tooth convex part is the most effective method, so that the thread parameters are adjusted under the condition that the diameter requirement of a blast hole is not influenced; to sum up, the utility model designs a rock drilling tool screw thread profile improves structure.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a rock drilling tool screw thread profile improves structure, structural design is reasonable, and convenient operation is reliable, and the sectional area at screw thread profile protrusion position has compared with original and has increased nearly 1/4, and tooth profile contained angle B reduces to some extent simultaneously, has suitably alleviated the problem of the difficulty of breaking out.
In order to achieve the above purpose, the present invention is realized by the following technical solution: the utility model provides a rock drilling tool thread profile improves structure, includes thread 1, thread 1's first radius R1 be 6mm, second radius R2 is 6mm, pitch P is 13.5mm, the tooth depth H is 1.8mm, the big footpath D of screw thread is 32.5mm, through the adjustment, the sectional area of thread profile bulge position has increased nearly 1/4 with original comparing, tooth profile contained angle B reduces to some extent simultaneously, has suitably alleviated the problem of breaking out the difficulty.
The utility model has the advantages that: the utility model has the advantages of reasonable design, effectively increase the screw thread abrasion resistance, solve the difficult problem of breaking out, improved the life of tunnelling drilling tool.
Drawings
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments;
FIG. 1 is a prior art thread configuration;
fig. 2 is a schematic view of the improved structure of the thread of the present invention.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
Referring to fig. 2, the following technical solutions are adopted in the present embodiment: the improved structure of the thread form of the rock drilling tool comprises a thread 1, wherein the first radius R1 of the thread 1 is 6mm, the second radius R2 of the thread 1 is 6mm, the thread pitch P of the thread is 13.5mm, the thread depth H of the thread is 1.8mm, and the major diameter D of the thread is 32.5 mm.
In the wave-shaped radius of the thread of the embodiment, the first radius R1 is changed from 5.5mm to 6mm, the second radius R2=6mm is unchanged, the thread pitch P is changed from 12.7mm to 13.5mm, the thread depth H is changed from 1.5mm to 1.8mm, the major diameter D of the thread is changed from 31.34mm to 32.5mm, through adjustment, the sectional area of the protruding part of the thread profile is increased by nearly 1/4 compared with the original sectional area, and meanwhile, the included angle B of the thread profile is reduced to some extent, so that the problem of difficulty in thread removal is properly relieved.
The concrete embodiment solves the problem of volatile effect of the screw thread of the tunneling drilling tool for rock drilling, effectively increases the wear resistance of the screw thread, solves the problem of difficult shackle and prolongs the service life of the tunneling drilling tool.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. The improved structure of the thread form of the rock drilling tool is characterized by comprising a thread (1), wherein the first radius (R1) of the thread (1) is 6mm, the second radius (R2) of the thread is 6mm, the thread pitch (P) of the thread is 13.5mm, the thread depth (H) of the thread is 1.8mm, and the major diameter (D) of the thread is 32.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020031500.2U CN211448549U (en) | 2020-01-08 | 2020-01-08 | Improved structure of thread form of rock drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020031500.2U CN211448549U (en) | 2020-01-08 | 2020-01-08 | Improved structure of thread form of rock drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211448549U true CN211448549U (en) | 2020-09-08 |
Family
ID=72316910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020031500.2U Active CN211448549U (en) | 2020-01-08 | 2020-01-08 | Improved structure of thread form of rock drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211448549U (en) |
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2020
- 2020-01-08 CN CN202020031500.2U patent/CN211448549U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 198 Development Avenue, Xiaomeng Industrial Park, Xiaomeng Sub district Office, Guiyang Economic Development Zone, Guizhou Province, 550000 Patentee after: Guizhou Xinrui Huifeng Machinery Manufacturing Co.,Ltd. Country or region after: China Address before: 3rd Floor, Office Building, 108 Kaifa Avenue, Economic and Technological Development Zone, Guiyang City, Guizhou Province, 550000 Patentee before: GUIZHOU HUIFENG ZHONGYI MACHINERY MANUFACTURING CO.,LTD. Country or region before: China |
|
| CP03 | Change of name, title or address |