CN105179633A - Pump hub gear sleeve and machining process thereof - Google Patents
Pump hub gear sleeve and machining process thereof Download PDFInfo
- Publication number
- CN105179633A CN105179633A CN201510645585.7A CN201510645585A CN105179633A CN 105179633 A CN105179633 A CN 105179633A CN 201510645585 A CN201510645585 A CN 201510645585A CN 105179633 A CN105179633 A CN 105179633A
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- CN
- China
- Prior art keywords
- pump impeller
- impeller hub
- carries out
- hub tooth
- obtains carries
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H41/00—Rotary fluid gearing of the hydrokinetic type
- F16H41/24—Details
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Articles (AREA)
- Rotary Pumps (AREA)
Abstract
The invention belongs to the field of machine manufacturing and particularly relates to a pump hub gear sleeve used in a forklift torque converter. The pump hub gear sleeve comprises a pump hub gear sleeve gear and a pump hub gear sleeve body, wherein a tooth root part of the pump hub gear sleeve gear is higher than the outer circle of a toothless end so that the tooth part can be machined through the processes of tooth hobbing, tooth grinding and the like after heat treatment without the worry that a non-machined surface of a part is damaged. The inner circle of the pump hub gear sleeve body is in interference fit with the outer circle of the toothless end of the pump hub gear sleeve gear. During installation, the toothless end of the pump hub gear sleeve gear is sleeved with the pump hub gear sleeve body after the pump hub gear sleeve body is heated, and electron beam welding is carried out on the joint. According to the pump hub gear sleeve made through the method, the precision of the tooth part can reach the level 6 or above, noise is greatly reduced, engaging conditions are greatly improved, the strength of the tooth part is also enhanced, and the major problem of the torque converter is solved.
Description
Technical field
The invention belongs to mechanical manufacturing field, the pump impeller hub tooth cover particularly used in a kind of fork truck torque-converters.
Background technique
This product pump wheel hub tooth cover is in the fork truck torque-converters for more than five tons, is one of them critical component.Because product structure is special, its tooth root portion is lower than the external diameter of part, technology groove adds at gear hobbing, roll flute also cannot avoid cutter, emery wheel to cut part non-finished surface man-hour, and therefore the processing of its teeth portion can only adopt the technique of gear honing after gear shaping, shaving and heat treatment at present.Due to will by being heated to about 900 DEG C high temperature in casehardening furnace during part heat treatment, then be incubated, carburizing, held for some time is needed again after cooling to about 840 DEG C again, then enter specific oil sump and be cooled to normal temperature rapidly, whole process lasts 5-6 hour, through so long-time high temperature and cooling rapidly, the distortion of part is inevitable, in addition because its material of heat (batch) number that the material that grade of steel is identical is different is different, add the existence of the internal stress after machining, the change of environment, the difference of furnace temperature and furnace atmosphere, the factors such as the change of quench media temperature and material, distortion can not be controlled effectively.Even if the teeth portion precision of being overlapped by tooth by the technique of gear shaping, shaving before heat treatment accomplishes 7 grades, and the plover tooth process after heat treatment can only reduce tooth-face roughness, and the situation that the teeth portion precision that causes due to distortion that heat treatment is later loses can not be repaired, what cause the every Testing index of teeth portion of processed tooth cover all to have in various degree is overproof, the teeth portion precision of testing result tooth cover is the highest can only reach 8 grades, mostly in 8-9 level.In addition, also there is the capricious phenomenon of profile of tooth teeth directional after heat treatment.The pump impeller hub tooth cover adopting this technique to make, has noise large, shortcoming easy to wear during use.
Summary of the invention
The narrow limitation of the processing technology that the structure that the present invention is directed to existing pump impeller hub tooth cover causes, provides a kind of pump impeller hub tooth cover that can carry out highi degree of accuracy processing of split-type structural.
A kind of pump impeller hub tooth cover, it comprises pump impeller hub tooth sleeve gear and pump impeller hub tooth cover cover two parts, wherein, the tooth root portion of pump impeller hub tooth sleeve gear is higher than the external diameter without increment, gear-grinding process just can be used so after the heat treatment to carry out teeth portion processing, and need not worry to hurt part non-finished surface, the internal diameter of pump impeller hub tooth cover cover and the external diameter without increment of pump impeller hub tooth sleeve gear adopt interference fit, during installation, by pump impeller hub tooth cover cover heating after be inserted in pump impeller hub tooth sleeve gear without increment, joint electron beam welding.
In described a kind of pump impeller hub tooth cover, after described pump impeller hub tooth cover installation, owing to leaving processing groove, so newly-designed teeth portion length is greater than intrinsic teeth portion length, the intensity of teeth portion is also higher.
A processing technology for pump impeller hub tooth cover, it comprises the following steps:
1) pump impeller hub tooth sleeve gear processing:
1.1) raw material are forged, normalized treatment;
1.2) to step 1.1) material that obtains carries out rough turn;
1.3) to step 1.2) material that obtains carries out high-temperature tempering process;
1.4) to step 1.3) material that obtains carries out half finish turning;
1.5) to step 1.4) material that obtains carries out plain grinding, gear hobbing, the process of mill rib;
1.6) to step 1.5) material that obtains carries out Carburization Treatment, and attention will carry out cement protection to cement protection layer one, carburizing and quenching layer depth 0.5-0.9mm, surface hardness HRC58-63, centre hardness HRC25-40 after protection;
1.7) to step 1.6) material that obtains carries out the process of hot rear car, interior mill, plain grinding, roll flute and outer mill, and interior mill will ensure that teeth portion end face and pitch circle are beated and be less than 0.01mm;
2) pump impeller hub tooth cover cover processing:
2.1) raw material are forged, normalized treatment;
2.2) to step 2.1) material that obtains carries out rough turn;
2.3) to step 2.2) material that obtains carries out high-temperature tempering process;
2.4) to step 2.3) material that obtains carries out half finish turning;
2.5) to step 2.4) material that obtains carries out Carburization Treatment, and attention will carry out cement protection to cement protection layer two, carburizing and quenching layer depth 0.5-0.9mm, surface hardness HRC58-63, centre hardness HRC25-40 after protection;
2.6) to step 2.5) material that obtains carries out the process of hot rear car and interior mill, and interior mill will ensure that teeth portion end face and pitch circle are beated and be less than 0.01mm;
3) combine:
3.1) by pump impeller hub tooth cover cover heating and with pump impeller hub tooth sleeve gear hot jacket;
3.2) to step 3.1) joint of assembly parts that obtains uses electron beam welding;
3.3) to step 3.2) assembly parts that obtains carries out finish turning;
3.4) to step 3.3) assembly parts that obtains carries out interior mill and outer mill;
4) check, clean, pack, put in storage.
The pump impeller hub tooth cover utilizing the inventive method to make, its teeth portion precision can reach more than 6 grades, and noise and engagement situation are also very significantly improved, and teeth portion intensity have also been obtained increase, solve a great problem existing for torque-converters.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of pump impeller hub tooth of the present invention cover;
Accompanying drawing 2 is the structural representation of pump impeller hub tooth sleeve gear;
Accompanying drawing 3 is the structural representation of pump impeller hub tooth cover cover;
Accompanying drawing 4 is the structural representation of intrinsic pump impeller hub tooth cover cover.
In accompanying drawing 1 ~ accompanying drawing 3: 1 represents pump impeller hub tooth sleeve gear; 1a represents teeth portion; 1b represents tooth root portion; 1c indicates without increment; 2 represent pump impeller hub tooth cover cover; 3 represent soldering point; 4a represents cement protection layer one; 4b represents cement protection layer two; 5 represent processing groove.
Embodiment
Contrast accompanying drawing 1 ~ accompanying drawing 4 below, by embodiment, the invention will be further described.
With reference to accompanying drawing 1 ~ accompanying drawing 4, a kind of pump impeller hub tooth cover, it comprises pump impeller hub tooth sleeve gear 1 and pump impeller hub tooth cover cover 2 two parts, wherein, the tooth root portion 1b of pump impeller hub tooth sleeve gear 1 is higher than the external diameter without increment 1c, gear-grinding process just can be used so after the heat treatment to carry out teeth portion 1a processing, and need not worry to hurt part non-finished surface, internal diameter 0.015 ~ the 0.059mm less of the external diameter without increment 1c of pump impeller hub tooth sleeve gear 1 of pump impeller hub tooth cover cover 2, during installation, by pump impeller hub tooth cover cover 2 be inserted in pump impeller hub tooth sleeve gear 1 without increment 1c, joint electron beam welding, form soldering point 3.After the installation of pump impeller hub tooth cover, owing to can not leave processing groove 5, so newly-designed teeth portion 1a length is greater than intrinsic teeth portion length, the intensity of teeth portion 1a is also higher.
A processing technology for pump impeller hub tooth cover, it comprises the following steps:
1) pump impeller hub tooth sleeve gear 1 is processed:
1.1) raw material are forged, normalized treatment;
1.2) to step 1.1) material that obtains carries out rough turn;
1.3) to step 1.2) material that obtains carries out high-temperature tempering process;
1.4) to step 1.3) material that obtains carries out half finish turning;
1.5) to step 1.4) material that obtains carries out plain grinding, gear hobbing, the process of mill rib;
1.6) to step 1.5) material that obtains carries out Carburization Treatment, and attention will carry out cement protection to cement protection layer one 4a, carburizing and quenching layer depth 0.5-0.9mm, surface hardness HRC58-63, centre hardness HRC25-40 after protection;
1.7) to step 1.6) material that obtains carries out the process of hot rear car, interior mill, plain grinding, roll flute and outer mill, and interior mill will ensure that teeth portion end face and pitch circle are beated and be less than 0.01mm;
2) pump impeller hub tooth cover cover 2 is processed:
2.1) raw material are forged, normalized treatment;
2.2) to step 2.1) material that obtains carries out rough turn;
2.3) to step 2.2) material that obtains carries out high-temperature tempering process;
2.4) to step 2.3) material that obtains carries out half finish turning;
2.5) to step 2.4) material that obtains carries out Carburization Treatment, and attention will carry out cement protection to cement protection layer two 4b, carburizing and quenching layer depth 0.5-0.9mm, surface hardness HRC58-63, centre hardness HRC25-40 after protection;
2.6) to step 2.5) material that obtains carries out the process of hot rear car and interior mill, and interior mill will ensure that teeth portion end face and pitch circle are beated and be less than 0.01mm;
3) combine:
3.1) by pump impeller hub tooth cover cover 2 heat and with pump impeller hub tooth sleeve gear 1 hot jacket;
3.2) to step 3.1) joint of assembly parts that obtains uses electron beam welding, forms soldering point 3;
3.3) to step 3.2) assembly parts that obtains carries out finish turning; (with reference to accompanying drawing 1)
3.4) to step 3.3) assembly parts that obtains carries out interior mill and outer mill;
4) check, clean, pack, put in storage.
Claims (3)
1. a pump impeller hub tooth cover, it is characterized in that described pump impeller hub tooth cover comprises pump impeller hub tooth sleeve gear and pump impeller hub tooth cover cover two parts, wherein, the tooth root portion of pump impeller hub tooth sleeve gear is higher than the external diameter without increment, the internal diameter of pump impeller hub tooth cover cover and the external diameter without increment of pump impeller hub tooth sleeve gear adopt interference fit, during installation, by pump impeller hub tooth cover cover heating after be inserted in pump impeller hub tooth sleeve gear without increment, joint electron beam welding.
2. a kind of pump impeller hub tooth cover according to claim 1, is characterized in that the teeth portion length of described pump impeller hub tooth cover is greater than intrinsic teeth portion length.
3. a processing technology for pump impeller hub tooth cover, it is characterized in that, described processing technology comprises the following steps:
1) pump impeller hub tooth sleeve gear processing:
1.1) raw material are forged, normalized treatment;
1.2) to step 1.1) material that obtains carries out rough turn;
1.3) to step 1.2) material that obtains carries out high-temperature tempering process;
1.4) to step 1.3) material that obtains carries out half finish turning;
1.5) to step 1.4) material that obtains carries out plain grinding, gear hobbing, the process of mill rib;
1.6) to step 1.5) material that obtains carries out Carburization Treatment, and attention will carry out cement protection to cement protection layer one, carburizing and quenching layer depth 0.5-0.9mm, surface hardness HRC58-63, centre hardness HRC25-40 after protection;
1.7) to step 1.6) material that obtains carries out the process of hot rear car, interior mill, plain grinding, roll flute and outer mill, and interior mill will ensure that teeth portion end face and pitch circle are beated and be less than 0.01mm;
2) pump impeller hub tooth cover cover processing:
2.1) raw material are forged, normalized treatment;
2.2) to step 2.1) material that obtains carries out rough turn;
2.3) to step 2.2) material that obtains carries out high-temperature tempering process;
2.4) to step 2.3) material that obtains carries out half finish turning;
2.5) to step 2.4) material that obtains carries out Carburization Treatment, and attention will carry out cement protection to cement protection layer two, carburizing and quenching layer depth 0.5-0.9mm, surface hardness HRC58-63, centre hardness HRC25-40 after protection;
2.6) to step 2.5) material that obtains carries out the process of hot rear car and interior mill, and interior mill will ensure that teeth portion end face and pitch circle are beated and be less than 0.01mm;
3) combine:
3.1) by pump impeller hub tooth cover cover heating and with pump impeller hub tooth sleeve gear hot jacket;
3.2) to step 3.1) joint of assembly parts that obtains uses electron beam welding;
3.3) to step 3.2) assembly parts that obtains carries out finish turning;
3.4) to step 3.3) assembly parts that obtains carries out interior mill and outer mill;
4) check, clean, pack, put in storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510645585.7A CN105179633A (en) | 2015-10-08 | 2015-10-08 | Pump hub gear sleeve and machining process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510645585.7A CN105179633A (en) | 2015-10-08 | 2015-10-08 | Pump hub gear sleeve and machining process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105179633A true CN105179633A (en) | 2015-12-23 |
Family
ID=54901940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510645585.7A Pending CN105179633A (en) | 2015-10-08 | 2015-10-08 | Pump hub gear sleeve and machining process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105179633A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421326A (en) * | 2019-07-23 | 2019-11-08 | 重庆申耀机械工业有限责任公司 | A kind of processing technology of nutating gear |
| CN113305522A (en) * | 2021-07-09 | 2021-08-27 | 盛瑞传动股份有限公司 | Processing method of transmission gear welding assembly |
| CN113976837A (en) * | 2021-10-27 | 2022-01-28 | 安徽合力股份有限公司合肥铸锻厂 | Casting process of large-tonnage forklift torque converter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090065319A1 (en) * | 2007-08-29 | 2009-03-12 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Torque converter with stator shaft one-way clutch |
| CN102537267A (en) * | 2010-12-15 | 2012-07-04 | 陕西航天动力高科技股份有限公司 | Hydraulic torque converter for fork truck |
| CN202707990U (en) * | 2012-05-08 | 2013-01-30 | 天津工程机械研究院 | Low-speed high-efficiency energy-saving lockup-type hydraulic torque converter |
| CN203272667U (en) * | 2013-05-09 | 2013-11-06 | 玉环泰丰机械有限公司 | Pump wheel hub of hydraulic torque converter |
| CN103899726A (en) * | 2014-04-28 | 2014-07-02 | 陕西航天动力高科技股份有限公司 | Locking type hydraulic torque converter for engineering machinery |
| JP2015017671A (en) * | 2013-07-11 | 2015-01-29 | 株式会社エクセディ | Lock-up device of torque converter |
-
2015
- 2015-10-08 CN CN201510645585.7A patent/CN105179633A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090065319A1 (en) * | 2007-08-29 | 2009-03-12 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Torque converter with stator shaft one-way clutch |
| CN102537267A (en) * | 2010-12-15 | 2012-07-04 | 陕西航天动力高科技股份有限公司 | Hydraulic torque converter for fork truck |
| CN202707990U (en) * | 2012-05-08 | 2013-01-30 | 天津工程机械研究院 | Low-speed high-efficiency energy-saving lockup-type hydraulic torque converter |
| CN203272667U (en) * | 2013-05-09 | 2013-11-06 | 玉环泰丰机械有限公司 | Pump wheel hub of hydraulic torque converter |
| JP2015017671A (en) * | 2013-07-11 | 2015-01-29 | 株式会社エクセディ | Lock-up device of torque converter |
| CN103899726A (en) * | 2014-04-28 | 2014-07-02 | 陕西航天动力高科技股份有限公司 | Locking type hydraulic torque converter for engineering machinery |
Non-Patent Citations (1)
| Title |
|---|
| 李春玮: "齿轮加工工艺", 《机械管理开发》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421326A (en) * | 2019-07-23 | 2019-11-08 | 重庆申耀机械工业有限责任公司 | A kind of processing technology of nutating gear |
| CN113305522A (en) * | 2021-07-09 | 2021-08-27 | 盛瑞传动股份有限公司 | Processing method of transmission gear welding assembly |
| CN113305522B (en) * | 2021-07-09 | 2022-07-12 | 盛瑞传动股份有限公司 | Processing method of transmission gear welding assembly |
| CN113976837A (en) * | 2021-10-27 | 2022-01-28 | 安徽合力股份有限公司合肥铸锻厂 | Casting process of large-tonnage forklift torque converter |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
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Application publication date: 20151223 |