CN101781704A - Process for shaping out-of-round internal gear parts - Google Patents
Process for shaping out-of-round internal gear parts Download PDFInfo
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- CN101781704A CN101781704A CN 201010127731 CN201010127731A CN101781704A CN 101781704 A CN101781704 A CN 101781704A CN 201010127731 CN201010127731 CN 201010127731 CN 201010127731 A CN201010127731 A CN 201010127731A CN 101781704 A CN101781704 A CN 101781704A
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- internal gear
- gear parts
- circle
- round
- shaping
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Abstract
The invention provides a process for shaping out-of-round internal gear parts. The process is characterized by comprising the following steps of: 1, detecting the out-of-round sizes of the heat-treated internal gear parts by using an out-of-round detector, calibrating the position of the most out-of-round parts and grading the out-of-round sizes; and 2, placing the most out-of-round parts of the same-grade internal gear parts between two flat slabs connected with each other by bolts, adjusting the distance between the two flat slabs to clamp, and after clamping, placing the whole assembly into a drying oven to temper. The process has the advantages of increasing product qualified yield and avoiding waste during production through the simple steps.
Description
Technical field
The present invention relates to a kind of process for shaping out-of-round internal gear parts, be used for adjusting the mistake circle distortion behind the automatic gear-box internal gear parts carburizing and quenching.
Background technology
In the prior art, internal gear parts adopts low-pressure carburization+high pressure gas quenching thermal treatment process of world advanced person in the automatic gear-box.The part of internal wheel wherein, shape similar " imperial crown ", the big wall in footpath thin (external diameter 200-300mm/ wall thickness 5-15mm), bigger to losing circle Deformation Control difficulty after the thermal treatment, cause product qualified rate on the low side, only be about 80%.
Summary of the invention
The purpose of this invention is to provide a kind of process for shaping out-of-round internal gear parts, to improve the qualification rate of internal gear parts.
In order to achieve the above object, technical scheme of the present invention provides a kind of process for shaping out-of-round internal gear parts, it is characterized in that, concrete steps are:
The first step: will detect mistake circle size with losing the circle cubing through heat treated internal gear parts, and demarcate the position of losing the circle largest portion; With described mistake circle size stepping;
Second step: the mistake circle largest portion of same grade mistake circle part is put into between bolted two flat boards, and the distance of adjusting between two flat boards is carried out clamping, after the clamping said modules integral body is put into the baking oven tempering.
Lose the circle cubing described in the first step and comprise base plate, base plate is provided with the fixed block of two vertical distribution, also be provided with a size dial gauge on the base plate, described size dial gauge and a fixed block are oppositely arranged, and internal gear parts places between fixed block and the size dial gauge.
The invention has the advantages that:, make product percent of pass raise the waste in avoiding producing by simple steps.
Description of drawings
Fig. 1 is for losing circle cubing structural representation;
Fig. 2 is the apparatus for shaping structural representation.
Embodiment
Specify the present invention below in conjunction with embodiment.
Embodiment
To carry out shot blasting through the internal gear parts 6 after the thermal treatment process such as low-pressure carburization, high pressure gas quenching and tempering, will lose the circle cubing through heat treated internal gear parts 6 usefulness then and detect mistake circle size, and demarcate and lose the circle maximum position; Described mistake circle size is divided into 10 grades; As shown in Figure 1, for losing round cubing structural representation, described mistake circle cubing comprises base plate 1, base plate 1 is provided with the fixed block 2 of two vertical distribution, also be provided with a size dial gauge 3 on the base plate 1, in order to measure cylindrical that internal gear parts 6 the rotates a circle scope of beating, described size dial gauge 3 and a fixed block 2 are oppositely arranged, and internal gear parts 6 places between fixed block 2 and the size dial gauge 3.
As shown in Figure 2, be the apparatus for shaping structural representation, the mistake circle part of same shelves is put between two flat boards 4 that connect with bolt 5, described dull and stereotyped 4 is the thick GCr15 steel plate of 20mm, and its parallelism is had relatively high expectations, and described bolt 5 is 10.9 grade high-strength M18 bolts, measure distance between two flat boards with bore gauge, adjusting the distance between two flat boards 4, is example with the input internal wheel, and it is corresponding to following table to lose circle size and dull and stereotyped spacing:
With aforesaid method clamping 3 hours, said modules integral body is put into baking oven, tempering 3hour under 150 ℃ of temperature.With carrying out finished product detection after the magnetic-particle inspection again.Because under the high temperature, internal gear parts 6 YIELD STRENGTH reduce, under the effect of holding force, internal gear parts 6 produces micro-yield deformation, thereby reaches gauged purpose.And at normal temperatures, still being in the elastic deformation area after internal gear parts 6 clampings, behind the removal reactive force, distortion recovers, and can't reach gauged purpose.Two aspects are mainly depended in the selection of tempering temperature: temperature is high more, and is favourable more to reducing material yield intensity; Avoid the reduction of heat treatment table surface hardness simultaneously.
Behind process for shaping out-of-round, by the updating and optimize of anchor clamps cubing, operator's proficiency improves, the debugging of all kinds of utility appliance and perfect, and the shaping qualification rate constantly rises.In the PPAP stage, the shaping qualification rate is 85%, and is as shown in the table; Enter batch product after the stage, qualification rate rises and maintains 95% (for preventing tiny crack, lose to justify and do not carry out shaping greater than 0.50mm).
| Part name | The part sum | Lose circle greater than 0.55mm | The shaping part | The shaping rejected part | The shaping qualified part | The shaping qualification rate | Total qualification rate |
| Driven internal wheel | ??300 | ??12 | ??288 | ??30 | ??258 | ??89.58％ | ??86.00％ |
| The input internal wheel | ??300 | ??12 | ??288 | ??31 | ??257 | ??89.24％ | ??85.67％ |
| Output inner gear | ??300 | ??11 | ??289 | ??41 | ??248 | ??85.81％ | ??82.67％ |
Claims (2)
1. a process for shaping out-of-round internal gear parts is characterized in that, concrete steps are:
The first step: will detect mistake circle size with losing the circle cubing through heat treated internal gear parts (6), and demarcate the position of losing the circle largest portion; With described mistake circle size stepping;
Second step: the mistake circle largest portion of same grade mistake circle part is put between two flat boards (4) that connect with bolt (5), and the distance of adjusting between two flat boards (4) is carried out clamping, after the clamping said modules integral body is put into the baking oven tempering.
2. process for shaping out-of-round internal gear parts as claimed in claim 1, it is characterized in that, lose the circle cubing described in the first step and comprise base plate (1), base plate (1) is provided with the fixed block (2) of two vertical distribution, also be provided with a size dial gauge (3) on the base plate (1), described size dial gauge (3) is oppositely arranged with a fixed block (2), and internal gear parts (6) places between fixed block (2) and the size dial gauge (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010127731 CN101781704A (en) | 2010-03-19 | 2010-03-19 | Process for shaping out-of-round internal gear parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010127731 CN101781704A (en) | 2010-03-19 | 2010-03-19 | Process for shaping out-of-round internal gear parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101781704A true CN101781704A (en) | 2010-07-21 |
Family
ID=42521857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010127731 Pending CN101781704A (en) | 2010-03-19 | 2010-03-19 | Process for shaping out-of-round internal gear parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101781704A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2156470Y (en) * | 1993-03-24 | 1994-02-16 | 王正木 | Excircle instrument |
| CN2503452Y (en) * | 2001-09-21 | 2002-07-31 | 天津钢管有限责任公司 | Adjustable steel pipe roundness and external caliper |
| CN1621540A (en) * | 2004-12-03 | 2005-06-01 | 瓦房店轴承集团有限责任公司 | Heat treating trimming method for large-scale bearing ring |
| CN1752224A (en) * | 2005-05-13 | 2006-03-29 | 瓦房店轴承集团有限责任公司 | Method for heat treatment coning of bearing |
| CN1994664A (en) * | 2006-11-16 | 2007-07-11 | 洛阳Lyc轴承有限公司 | Heat processed bearing ring shaping method and shaping prop |
| CN101233249A (en) * | 2005-07-22 | 2008-07-30 | Gkn烧结金属股份有限公司 | Laser rounding and flattening of cylindrical parts |
| CN201193942Y (en) * | 2008-04-17 | 2009-02-11 | 程钢 | Cylinder measuring apparatus |
| CN101643832A (en) * | 2009-09-02 | 2010-02-10 | 大连华锐股份有限公司 | Method for preventing circularity over tolerance of large gear ring after heat treatment |
-
2010
- 2010-03-19 CN CN 201010127731 patent/CN101781704A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2156470Y (en) * | 1993-03-24 | 1994-02-16 | 王正木 | Excircle instrument |
| CN2503452Y (en) * | 2001-09-21 | 2002-07-31 | 天津钢管有限责任公司 | Adjustable steel pipe roundness and external caliper |
| CN1621540A (en) * | 2004-12-03 | 2005-06-01 | 瓦房店轴承集团有限责任公司 | Heat treating trimming method for large-scale bearing ring |
| CN1752224A (en) * | 2005-05-13 | 2006-03-29 | 瓦房店轴承集团有限责任公司 | Method for heat treatment coning of bearing |
| CN101233249A (en) * | 2005-07-22 | 2008-07-30 | Gkn烧结金属股份有限公司 | Laser rounding and flattening of cylindrical parts |
| CN1994664A (en) * | 2006-11-16 | 2007-07-11 | 洛阳Lyc轴承有限公司 | Heat processed bearing ring shaping method and shaping prop |
| CN201193942Y (en) * | 2008-04-17 | 2009-02-11 | 程钢 | Cylinder measuring apparatus |
| CN101643832A (en) * | 2009-09-02 | 2010-02-10 | 大连华锐股份有限公司 | Method for preventing circularity over tolerance of large gear ring after heat treatment |
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Open date: 20100721 |