CN111842752A - Cutting tooth structure of heading machine and production process method - Google Patents
Cutting tooth structure of heading machine and production process method Download PDFInfo
- Publication number
- CN111842752A CN111842752A CN202010641409.7A CN202010641409A CN111842752A CN 111842752 A CN111842752 A CN 111842752A CN 202010641409 A CN202010641409 A CN 202010641409A CN 111842752 A CN111842752 A CN 111842752A
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- CN
- China
- Prior art keywords
- cutting
- connecting column
- blind hole
- pick body
- pick
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000000956 alloy Substances 0.000 claims abstract description 41
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 41
- 238000005242 forging Methods 0.000 claims abstract description 17
- 238000010791 quenching Methods 0.000 claims abstract description 4
- 230000000171 quenching effect Effects 0.000 claims abstract description 4
- 238000010276 construction Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 239000002918 waste heat Substances 0.000 claims description 3
- 238000005219 brazing Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000036346 tooth eruption Effects 0.000 description 8
- 239000003245 coal Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/18—Mining picks; Holders therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Forging (AREA)
Abstract
A heading machine cutting tooth structure and a production process method solve the problems that the strength of a brazing structure part is low and an alloy tool bit falls off after stress caused by a brazing structure of the alloy tool bit on the cutting tooth, and the cutting tooth structure is as follows: the alloy cutter head is provided with a connecting column which is inserted and connected into a whole with a blind hole on the cutting pick body in an interference fit manner. The production method comprises the following steps: after the alloy cutter head with the connecting column is inserted into the blind hole of the pick body, the blind hole part is heated to a forging temperature in a high frequency mode, and then the connecting column of the alloy cutter head is installed in the blind hole of the pick body to be subjected to reducing forging to form interference fit of the connecting column and the blind hole. Then quenching treatment is carried out. The beneficial effects are that: the cutting pick has the advantages that the cutting pick is simple in structure, the alloy tool bit and the cutting pick body are firmly connected, the cutting pick is not prone to falling and separating when in use, the service life of the cutting pick is prolonged, the production process is simple, the production efficiency is high, and the manufacturing cost of the cutting pick is greatly reduced.
Description
Technical Field
The invention relates to a mechanical manufacturing method of a cutting tooth of a heading machine, in particular to a cutting tooth structure of the heading machine and a production process method.
Background
The heading machine is a general name of underground roadway excavation equipment, such as a coal mining machine used in coal mines, a roadway heading machine, a shield machine used in subway construction and the like, excavation operation is carried out by cutting teeth embedded on a rotating disk, the cutting teeth are also embedded on a drill rod of the drilling machine, and an alloy cutter head on the cutting teeth (commonly called teeth) directly carries out cutting operation on underground rock, coal and soil when the equipment is used, so that the cutting teeth bear severe working conditions such as huge impact, abrasion and the like during working, therefore, the alloy cutter head on the cutting teeth is also a vulnerable part, and the performance of the cutting teeth and the service life of the alloy cutter head on the cutting teeth directly influence the working efficiency of the heading machine.
Among the prior art, alloy tool bit on the pick all adopts alloy tool bit and pick body braze welding structure, the structure of brazing among the prior art, the technology is complicated with high costs, the structure part intensity of brazing is less than alloy tool bit and pick body material itself greatly, the intensity that forms the position of brazing is weak, use the atress back, the position fracture alloy tool bit of brazing drops, a large amount of picks cause the pick to scrap and can't use owing to dropping of alloy tool bit, cause use cost to increase and need frequently change the greatly reduced that pick reduces the rate of utilization of equipment.
Object of the Invention
In order to overcome the technical defects of the existing cutting pick, the invention discloses a cutting pick structure of a heading machine and a production process method.
The invention realizes the technical scheme adopted by the invention of the cutting tooth structure of the heading machine, and the cutting tooth structure comprises the following steps: a heading machine cutting pick structure comprises an alloy tool bit and a cutting pick body, wherein the alloy tool bit comprises: the cutting tool bit and the connecting column are of an integrated structure.
The pick body is provided with a blind hole with a size corresponding to the connecting column.
The connecting column on the alloy cutter head is inserted into the blind hole on the cutting pick body in an interference fit manner to form a whole.
The invention realizes the technical scheme adopted by the invention for the purpose of the process method for producing the cutting teeth of the heading machine, and the technical scheme is as follows: the process method comprises the following steps: the alloy tool bit and the cutting pick body are fixedly connected into a whole. The process method is realized by the following steps:
and 3, reducing and forging the blind hole part on the cutting pick body by using a forging die to form interference fit of the connecting column and the blind hole.
And 4, quenching the cutting pick body by utilizing the waste heat of the cutting pick body after the step 3.
The invention has the beneficial effects that: the cutting pick has the advantages that the cutting pick is simple in structure, the alloy tool bit and the cutting pick body are firmly connected, the cutting pick is not prone to falling and separating when in use, the service life of the cutting pick is prolonged, the production process is simple, the production efficiency is high, and the manufacturing cost of the cutting pick is greatly reduced.
The present invention will be described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of a cutting pick according to the present invention.
FIG. 2 is a schematic view of the heating of the blind hole portion of the cutting pick body in the process of the present invention.
FIG. 3 is a schematic drawing of reducing forging of a blind hole portion on a cutting pick body in the process of the invention.
In the attached drawing, 1 alloy cutter head, 1-1 cutting cutter head, 1-2 connecting column, 1-21 annular groove, 2 cutting tooth body, 2-1 blind hole, 3 forging die and 4 high-frequency induction coil.
Detailed Description
Referring to fig. 1, a heading machine cutting pick structure comprises an alloy cutter head and a cutting pick body.
The alloy tool bit 1 comprises: the cutting tool comprises a cutting tool bit 1-1 and a connecting column 1-2, wherein the cutting tool bit 1-1 and the connecting column 1-2 are of an integrated structure.
The pick body 2 is provided with a blind hole 2-1 with the size corresponding to that of the connecting column 1-2.
The connecting column 1-2 on the alloy cutter head 1 and the blind hole 2-1 on the cutting pick body 2 are inserted into a whole in an interference fit mode.
When the alloy cutting pick is used, load borne by the cutting pick is transmitted to the cutting pick body 2 through the connecting column 1-2, and the alloy cutting pick 1 is not separated from the cutting pick body 2 through the interference fit of the connecting column 1-2 and the blind hole 2-1 on the cutting pick body 2.
In the embodiment of the invention, a group of annular grooves 1-21 are arranged on the excircle of the connecting column 1-2 of the alloy cutter head 1. The interference fit connection formed by hot processing the connecting column 1-2 and the blind hole 2-1 on the cutting pick body 2 is firmer through the group of annular grooves 1-21. After the blind hole 2-1 on the pick body 2 is subjected to hot working, materials on the partial pick body 2 can enter the annular groove 1-21, so that the connecting column 1-2 of the alloy cutter head 1 cannot be separated from the blind hole 2-1.
In the embodiment of the invention, the generatrix of the axial section of the connecting column 1-2 of the alloy cutter head 1 is arc-shaped. The hot processing technology is convenient for installing the connecting column 1-2 and the blind hole 2-1 and forming interference fit between the connecting column 1-2 and the blind hole 2-1.
Referring to the attached figures 2 and 3, a process method for producing a heading machine cutting pick comprises the following steps: the alloy tool bit and the cutting pick body are fixedly connected into a whole, and the process method is realized by the following steps:
The connecting column 1-2 of the alloy cutter head 1 is arranged in the blind hole 2-1 of the cutting pick body 2.
And 3, reducing and forging the blind hole 2-1 part on the pick body 2 by using a forging die 3 to form interference fit of the connecting column 1-2 and the blind hole 2-1.
And 4, quenching the cutting pick body 2 by utilizing the waste heat of the cutting pick body 2 after the step 3.
In the embodiment of the invention, in the step 2, the blind hole 2-1 part on the pick body 2 is heated to the forging temperature by high frequency induction coil 4.
Claims (5)
1. The utility model provides a heading machine pick structure, includes alloy tool bit and pick body, its characterized in that:
the alloy tool bit (1) comprises: the cutting tool comprises a cutting tool bit (1-1) and a connecting column (1-2), wherein the cutting tool bit (1-1) and the connecting column (1-2) are of an integral structure;
the cutting pick body (2) is provided with a blind hole (2-1) with the size corresponding to that of the connecting column (1-2);
the connecting column (1-2) on the alloy cutter head (1) is inserted into the blind hole (2-1) on the cutting pick body (2) in an interference fit manner to form a whole.
2. A heading machine pick construction according to claim 1, wherein: a group of annular grooves (1-21) are formed in the outer circle of the connecting column (1-2) of the alloy cutter head (1).
3. A heading machine pick construction according to claim 1 or claim 2, wherein: the generatrix of the axial section of the connecting column (1-2) of the alloy cutter head (1) is arc-shaped.
4. A process method for producing a heading machine cutting pick comprises the following steps: the alloy tool bit and the cutting pick body are fixedly connected into a whole, and the process method is characterized by comprising the following steps:
step 1, forming an alloy cutter head (1) with a connecting column (1-2) in one step, and processing a blind hole (2-1) with a size corresponding to the connecting column (1-2) on a pick body (2);
step 2, after the blind hole (2-1) part on the cutting pick body (2) is heated to the forging temperature in a high frequency mode, the cutting pick body is heated to the forging temperature
A connecting column (1-2) of the alloy cutter head (1) is arranged in a blind hole (2-1) of the cutting pick body (2);
step 3, reducing and forging the blind hole (2-1) on the pick body (2) by using a forging die (3) to form interference fit of the connecting column (1-2) and the blind hole (2-1);
And 4, quenching the cutting pick body (2) by utilizing the waste heat of the cutting pick body (2) after the step 3 is finished.
5. A process for the production of a heading machine pick according to claim 4, wherein: in the step 2, the blind hole (2-1) part on the pick body (2) is heated to the forging temperature in a high-frequency mode through a high-frequency induction coil (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010641409.7A CN111842752A (en) | 2020-07-06 | 2020-07-06 | Cutting tooth structure of heading machine and production process method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010641409.7A CN111842752A (en) | 2020-07-06 | 2020-07-06 | Cutting tooth structure of heading machine and production process method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111842752A true CN111842752A (en) | 2020-10-30 |
Family
ID=73152422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010641409.7A Pending CN111842752A (en) | 2020-07-06 | 2020-07-06 | Cutting tooth structure of heading machine and production process method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111842752A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908652A (en) * | 2022-05-31 | 2022-08-16 | 江苏徐工工程机械研究院有限公司 | Milling cutter head, method for producing the milling cutter head, milling rotor and road milling machine |
| CN115213647A (en) * | 2022-08-30 | 2022-10-21 | 山东兖矿智能制造有限公司 | Cutting tooth forming method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102935A (en) * | 1985-05-01 | 1986-11-05 | 联合机械钢铁有限公司 | Cutting tool and manufacture method thereof and equipment |
| CN1951627A (en) * | 2005-10-21 | 2007-04-25 | 郭继伟 | Process for producing chain pick |
| CN101920442A (en) * | 2010-06-20 | 2010-12-22 | 大丰市中德精锻件有限公司 | Process for coldly extruding, reducing and pressing bit body and hard alloy head |
| CN103009001A (en) * | 2012-12-20 | 2013-04-03 | 河南省煤科院耐磨技术有限公司 | Production method of cold assembly low-cutting-resistance wear-resistant conical bit |
| CN104160110A (en) * | 2012-01-24 | 2014-11-19 | 第六元素研磨剂股份有限公司 | Pick tool and assembly comprising same |
| CN212264403U (en) * | 2020-07-06 | 2021-01-01 | 鹤岗市融鑫矿山机械制造有限责任公司 | Cutting tooth structure of heading machine |
-
2020
- 2020-07-06 CN CN202010641409.7A patent/CN111842752A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102935A (en) * | 1985-05-01 | 1986-11-05 | 联合机械钢铁有限公司 | Cutting tool and manufacture method thereof and equipment |
| CN1951627A (en) * | 2005-10-21 | 2007-04-25 | 郭继伟 | Process for producing chain pick |
| CN101920442A (en) * | 2010-06-20 | 2010-12-22 | 大丰市中德精锻件有限公司 | Process for coldly extruding, reducing and pressing bit body and hard alloy head |
| CN104160110A (en) * | 2012-01-24 | 2014-11-19 | 第六元素研磨剂股份有限公司 | Pick tool and assembly comprising same |
| CN103009001A (en) * | 2012-12-20 | 2013-04-03 | 河南省煤科院耐磨技术有限公司 | Production method of cold assembly low-cutting-resistance wear-resistant conical bit |
| CN212264403U (en) * | 2020-07-06 | 2021-01-01 | 鹤岗市融鑫矿山机械制造有限责任公司 | Cutting tooth structure of heading machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908652A (en) * | 2022-05-31 | 2022-08-16 | 江苏徐工工程机械研究院有限公司 | Milling cutter head, method for producing the milling cutter head, milling rotor and road milling machine |
| CN114908652B (en) * | 2022-05-31 | 2023-10-03 | 江苏徐工工程机械研究院有限公司 | Milling cutter head, forming method thereof, milling rotor and pavement milling machine |
| CN115213647A (en) * | 2022-08-30 | 2022-10-21 | 山东兖矿智能制造有限公司 | Cutting tooth forming method |
| CN115213647B (en) * | 2022-08-30 | 2024-02-09 | 山东兖矿智能制造有限公司 | Cutting pick molding method |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20221207 Address after: 264000 East of Wanggezhuang Village, Xinjia Street, Longkou City, Yantai City, Shandong Province Applicant after: Yantai Rongxin Xichi Mining Technology Co.,Ltd. Address before: 154100 room 101-2, group 12, 35 Committee, Liuhe community, Nanshan District, Hegang City, Heilongjiang Province Applicant before: Hegang Rongxin Mining Machinery Manufacturing Co.,Ltd. |
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| TA01 | Transfer of patent application right |