CN101134255A - Hard alloy precision working rack type cutter and processing technique - Google Patents
Hard alloy precision working rack type cutter and processing technique Download PDFInfo
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- CN101134255A CN101134255A CNA2006101069546A CN200610106954A CN101134255A CN 101134255 A CN101134255 A CN 101134255A CN A2006101069546 A CNA2006101069546 A CN A2006101069546A CN 200610106954 A CN200610106954 A CN 200610106954A CN 101134255 A CN101134255 A CN 101134255A
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Abstract
The present invention is one kind of hard alloy combing cutter for finish machining and its machining process. The hard alloy combing cutter has one cutting blade made of YT798 hard alloy plate and one cutter body of 40Cr steel. It is machined through semi finishing of cutting blade, milling the cutter body in a universal milling machine to form the front edge and tooth form and boring the locating hole for the blade in a high accuracy jig boring machine, assembling the blade locating board onto the cutter body while controlling the tooth pitch and tooth thickness of the cutting edge, high frequency welding the cutting blade to the cutter body and timely tempering, grinding the front edge of the cutting edge in a cutter grinding machine, and wire electrode cutting the tooth form in high precision wire electrode cutting equipment. The hard alloy combing cutter has high cutting hardness and high wear resistance, and may be applied for finish machining great modulus gear with medium hardness tooth surface.
Description
Technical field:
The present invention relates to Gear Processing instrument and material technology field, a kind of hard alloy precision working rack type cutter and technological method for processing.
Background technology:
At present, existing rack type cutter is made with whole high speed steel material, and profile of tooth is that grinding forms basically.Profile accuracy is difficult to guarantee that maybe especially location dimension precision and tooth pitch precision difficulty of processing are big especially that the overproof phenomenon of precision often occurs.The roughness of profile of tooth rear edge face is lower, can not adhere to specification.Operator's labour intensity is big, and production efficiency is low.Moreover this kind high-speed steel rack type cutter can only be processed the material of heat treatment hardness less than the following hardness of HB320, when machining large-modulus, the uneven living-article of quenching and tempering hardness, the tool wear quickening can occur even process motionless situation, and the number of times of refacing of cutter is more, so the machining accuracy of gear is lower.
Summary of the invention:
In order to solve the broach processing difficult problem of big modulus, middle hard gear-face gear, overcome high-speed steel tool and can not process the defective of the hard flank of tooth, the purpose of this invention is to provide a kind of hard alloy precision working rack type cutter and technological method for processing, make this cutter can improve the machining accuracy of gear, can cut heat treatment hardness greater than the above material of HB320, and wear-resistant, can reduce the number of times of refacing of cutter, the bigger machining condition that improves.
For achieving the above object, the present invention adopts following technical scheme:
Described hard alloy precision working rack type cutter and technological method for processing, the cutting tip of its hard alloy precision working rack type cutter, left blade and right blade, all adopting the trade mark is the carbide alloy sheet material of YT798, cutter hub adopts trade mark 40Cr steel; Carbide chip carries out semifinishing earlier before welding with cutter hub, then, the plane that blade is contacted with cutter hub polishes, and again according to the even allowance of castellated shape of design, uses line to cut out profile of tooth; Cutter hub on universal milling machine by designing requirement the lip surface on the cutter hub before angular milling become, parts of tooth also mills by designing requirement, utilizes the high-precision coordinate boring machine then, bores the location hole of blade location-plate; The model pincers worker installs to location-plate on the cutter hub, the tooth pitch and the transverse tooth thickness of control cutting edge; Ratio-frequency welding is soldered to blade on the cutter hub, and timely temper; Wear into the lip surface of cutting edge by cutter grinding machine, by the high accuracy silk thread cutting of being careful, use special-purpose mold to cut out profile of tooth, and a clamping is slit into tooth top and flank relief angle at last.
Owing to adopted technical scheme as mentioned above, the present invention has following superiority:
The cutter of this hard alloy precision working rack type cutter adopts carbide alloy sheet material as cutting material, because carbide alloy has excellent red hardness and wearability, the feasible Tool in Cutting hardness height of making, wear-resistant, can improve machining condition greatlyyer, can satisfy the broach finishing requirements of big modulus, middle hard gear-face gear, for the processing of middle hard gear-face gear broach provides condition.
The tooth Profile Machining of the cutter of this hard alloy precision working rack type cutter has adopted the silk thread cutting technique of being careful, tool-tooth profile processing is simple, be convenient to operation, the tool dimension standard of processing is accurate, the tool-tooth profile precision is improved, improved the machining accuracy of gear, compare with traditional gear-grinding process, avoided abrasive material to come off and made the error of tool-tooth profile generation with the grinding wheel shape error, for processing rigid alloy molding cutter has been opened up a new way.
Description of drawings:
Fig. 1 is the cutter structure schematic diagram of hard alloy precision working rack type cutter:
Among the figure: 1-cutter hub, 2-left side blade, the right blade of 3-, 4-location-plate, 5-screw.
The specific embodiment:
The cutter of this hard alloy precision working rack type cutter has been selected the rapidoprint of YT798 carbide alloy sheet material as blade for use, and line cuts into the blade allowance profile that meets production engineering specifications, selects for use the 40Cr material as the cutter hub material, becomes cutter hub profile and profile of tooth are dried earlier; Bore the location-plate locating hole with jig bore, press production engineering specifications then location-plate is installed; Before the welding cutter hub is preheated to 250 ℃, is incubated 1 hour; Adopt high-frequency induction welding technique with blade and cutter hub welding, postwelding is tempering immediately; Leave front edge by cutter grinding machine, super smart plain grinding mill is respectively located datum level, is benchmark establishment tooth Profile Machining program with the normal tooth profile, loads onto special-purpose mold and respectively each profile of tooth and clamping of relief angle is slit into the high accuracy silk thread cutting of being careful.
Its concrete processing step is as follows:
1 selects blade material: select YT798 carbide alloy sheet material for use;
2 adopt the electric machining means, are processed into the carbide chip appearance and size of production engineering specifications;
The gauge and the roughness of welding process requirement are satisfied in the thickness two sides of 3 grinding carbide chips;
4 mill the cutter hub shape of hard alloy precision working rack type cutter; Mill out the welding stress groove;
5 use special-purpose mold, with the cutter hub profile of tooth of line cutting cutting rack type cutter; Cutter hub profile of tooth and tooth top, clamping of flank relief angle cut out;
6 jig bores bore the location-plate locating hole;
7 tooth pitch and transverse tooth thickness dress location-plates by technological requirement;
8 high-frequency welding carbide chips are preheated to 250 ℃ of insulations 1 hour with cutter hub before the weldering, and postwelding is temper immediately, cools to room temperature with the furnace; During welding, intersect the problems of welded quality that causes mutually, made the special welding thermocouple in order to solve the adjacent teeth thermal treatment zone; For determining the accurate welding position of blade, design the blade locating piece especially;
The welding slag of the meticulous repairing postwelding of 9 pincers worker guarantees that each position is clean;
The lip surface of 10 super smart plain grinding grinding hard alloy precision working rack type cutter; Grind each locating surface simultaneously;
11 use special-purpose mold, and with high accuracy line cutting cutting alloy blade involute profile, profile of tooth and tooth top, clamping of flank relief angle cut out.
Claims (2)
1. hard alloy precision working rack type cutter and technological method for processing, it is characterized in that: described hard alloy precision working rack type cutter, its cutting tip has left blade (2) and right blade (3), and adopting the trade mark is the carbide alloy sheet material of YT798, and cutter hub (1) adopts trade mark 40Cr steel; Carbide chip carries out semifinishing earlier before welding with cutter hub, then, the plane that blade is contacted with cutter hub polishes, and again according to the even allowance of castellated shape of design, uses line to cut out profile of tooth; Cutter hub on universal milling machine by designing requirement the lip surface on the cutter hub before angular milling become, parts of tooth also mills by designing requirement, utilizes the high-precision coordinate boring machine then, bores the location hole of blade location-plate; The model pincers worker installs to location-plate (4) on the cutter hub, the tooth pitch and the transverse tooth thickness of control cutting edge; Ratio-frequency welding is soldered to blade on the cutter hub, and timely temper; Wear into the lip surface of cutting edge by cutter grinding machine, by the high accuracy silk thread cutting of being careful, use special-purpose mold to cut out profile of tooth, and a clamping is slit into tooth top and flank relief angle at last.
2. hard alloy precision working rack type cutter according to claim 1 and technological method for processing is characterized in that: it is as follows that it adds the body of tool processing step:
1 selects blade material: select YT798 carbide alloy sheet material for use;
2 adopt the electric machining means, are processed into the carbide chip appearance and size of production engineering specifications;
The gauge and the roughness of welding process requirement are satisfied in the thickness two sides of 3 grinding carbide chips;
4 mill the cutter hub shape of hard alloy precision working rack type cutter; Mill out the welding stress groove;
5 use special-purpose mold, with the cutter hub profile of tooth of line cutting cutting rack type cutter; Cutter hub profile of tooth and tooth top, clamping of flank relief angle cut out;
6 jig bores bore the location-plate locating hole;
7 tooth pitch and transverse tooth thickness dress location-plates by technological requirement;
8 high-frequency welding carbide chips are preheated to 250 ℃ of insulations 1 hour with cutter hub before the weldering, and postwelding is temper immediately, cools to room temperature with the furnace; During welding, intersect the problems of welded quality that causes mutually, made the special welding thermocouple in order to solve the adjacent teeth thermal treatment zone; For determining the accurate welding position of blade, design the blade locating piece especially;
The welding slag of the meticulous repairing postwelding of 9 pincers worker guarantees that each position is clean;
The lip surface of 10 super smart plain grinding grinding hard alloy precision working rack type cutter; Grind each locating surface simultaneously;
11 use special-purpose mold, and with high accuracy line cutting cutting alloy blade involute profile, profile of tooth and tooth top, clamping of flank relief angle cut out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101069546A CN101134255B (en) | 2006-08-29 | 2006-08-29 | Hard alloy precision working rack type cutter and processing technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101069546A CN101134255B (en) | 2006-08-29 | 2006-08-29 | Hard alloy precision working rack type cutter and processing technique |
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| Publication Number | Publication Date |
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| CN101134255A true CN101134255A (en) | 2008-03-05 |
| CN101134255B CN101134255B (en) | 2010-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006101069546A Expired - Fee Related CN101134255B (en) | 2006-08-29 | 2006-08-29 | Hard alloy precision working rack type cutter and processing technique |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581353A (en) * | 2012-03-22 | 2012-07-18 | 沈阳飞机工业（集团）有限公司 | Designing and processing method of enveloped counter bit for titanium alloy |
| CN103008990A (en) * | 2012-12-10 | 2013-04-03 | 成都锦江电子系统工程有限公司 | Miniature multi-dimensional precise cutting processing method |
| CN104526722A (en) * | 2015-01-08 | 2015-04-22 | 东莞有成电器制品有限公司 | Combined blade and manufacturing process thereof |
| CN110587246A (en) * | 2019-08-27 | 2019-12-20 | 江阴塞特精密工具有限公司 | Manufacturing process of external tooth cylinder type broach finish cutting gear cutter head |
| CN113510317A (en) * | 2021-05-20 | 2021-10-19 | 东莞市百兴精密五金有限公司 | High efficiency, high accuracy and high life's forming relieved tooth cutter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB562827A (en) * | 1943-03-27 | 1944-07-18 | P R Jackson & Company Ltd | Improvements in or relating to double helical cutters such as are used in gear cutting machines |
| CN86210893U (en) * | 1986-12-29 | 1987-12-12 | 刘东喜 | Combined drilling and milling tool for milling and cutting taper hole |
| SU1618560A1 (en) * | 1987-11-26 | 1991-01-07 | Voridz V Yiakovlev | Method of securing hard-alloy cutting elements to housing of gear cutter |
| CN2759664Y (en) * | 2004-12-22 | 2006-02-22 | 哈尔滨第一工具有限公司 | Skewed tooth combing tool |
-
2006
- 2006-08-29 CN CN2006101069546A patent/CN101134255B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581353A (en) * | 2012-03-22 | 2012-07-18 | 沈阳飞机工业（集团）有限公司 | Designing and processing method of enveloped counter bit for titanium alloy |
| CN102581353B (en) * | 2012-03-22 | 2014-02-26 | 沈阳飞机工业（集团）有限公司 | Designing and processing method of enveloped counter bit for titanium alloy |
| CN103008990A (en) * | 2012-12-10 | 2013-04-03 | 成都锦江电子系统工程有限公司 | Miniature multi-dimensional precise cutting processing method |
| CN103008990B (en) * | 2012-12-10 | 2015-06-03 | 成都锦江电子系统工程有限公司 | Miniature multi-dimensional precise cutting processing method |
| CN104526722A (en) * | 2015-01-08 | 2015-04-22 | 东莞有成电器制品有限公司 | Combined blade and manufacturing process thereof |
| CN110587246A (en) * | 2019-08-27 | 2019-12-20 | 江阴塞特精密工具有限公司 | Manufacturing process of external tooth cylinder type broach finish cutting gear cutter head |
| CN110587246B (en) * | 2019-08-27 | 2020-12-11 | 江阴塞特精密工具有限公司 | Manufacturing process of external tooth cylinder type broach finish cutting gear cutter head |
| CN113510317A (en) * | 2021-05-20 | 2021-10-19 | 东莞市百兴精密五金有限公司 | High efficiency, high accuracy and high life's forming relieved tooth cutter |
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| Publication number | Publication date |
|---|---|
| CN101134255B (en) | 2010-10-06 |
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Owner name: ZHONGXIN HEAVY INDUSTRY MACHINERY CO., LTD.;LUOYAN Free format text: FORMER OWNER: ZHONGXIN HEAVY MACHINERY CO. Effective date: 20110311 |
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Effective date of registration: 20110311 Address after: 471039 Jianshe Road, Jianxi, Henan, No. 206, Patentee after: Citic Heavy Industries Co., Ltd. Address before: 471039 Jianshe Road, Jianxi, Henan, No. 206, Patentee before: Zhongxin Heavy Machinery Co. |
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Granted publication date: 20101006 Termination date: 20200829 |