CN102689144A - Chemical treatment and processing method of overrunning clutch wedge - Google Patents
Chemical treatment and processing method of overrunning clutch wedge Download PDFInfo
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- CN102689144A CN102689144A CN2012101823825A CN201210182382A CN102689144A CN 102689144 A CN102689144 A CN 102689144A CN 2012101823825 A CN2012101823825 A CN 2012101823825A CN 201210182382 A CN201210182382 A CN 201210182382A CN 102689144 A CN102689144 A CN 102689144A
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- voussoir
- chemical treatment
- processing method
- freewheel clutch
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Abstract
The invention relates to an overrunning clutch, and in particular relates to a chemical treatment and processing method of an overrunning clutch wedge... The wedge provided by the invention has high production precision so as to prolong the service life of the clutch. The method comprises the following steps of: carrying out cold drawing and cutting to produce a wedge with the margin being 0.02-0.04mm on the single side by using ball bearing steel; polishing after vacuum hardening and tempering, and removing the oil stain and edge on the surface; carrying out acid corrosion on the wedge; disacidifying the wedge after acid corrosion; carrying out rustproof treatment; and molding the wedge after rustproof treatment by using an extruder, thus finishing the chemical treatment and processing of the overrunning clutch wedge.
Description
Technical field
The present invention relates to a kind of freewheel clutch, especially relate to a kind of chemical treatment and processing method of freewheel clutch voussoir.
Background technology
Wedge type over running clutch is a kind of device of unidirectional delivery power, is widely used in the intermittent drive mechanism of aircraft, tank, military trucks, offroad vehicle, lathe, textile machine, automatic assembly line etc.Existing Wedge type over running clutch comprises interior ring, the outer shroud with slideway, between interior external slideway, is provided with special-shaped fixture block (being voussoir) and has the retainer of spring.
Wherein voussoir is extremely important parts in the Wedge type over running clutch, in the transmission of clutch, plays an important role.Its accuracy of manufacture and intensity are to all producing significant effects the service life of whole freewheel clutch.Traditional voussoir is processed by cold-drawn, cut-out, heat treatment, polishing four procedures (sees document: " Wedge type over running clutch is in the application of loading machine gearbox " periodical: building machineryization, classification number: TH243); Wherein cold-drawn, this two procedures of heat treatment are carried out on heat treated basis and polish owing to expand with heat and contract with cold and can produce bigger error to the accuracy of manufacture of voussoir, have more caused error accumulation, make the voussoir of producing be difficult to meet requirement of products.
Summary of the invention
Technical problem to be solved by this invention is, the deficiency that exists to existing voussoir processing method, thus provide a kind of voussoir that makes to have chemical treatment and processing method that the higher accuracy of manufacture improves the freewheel clutch voussoir in clutch service life.
The present invention includes following steps:
1) uses bearing steel (GCr15), after cold-drawn, cut-out, produce the monolateral voussoir that surplus is 0.02～0.04mm that leaves, after vacuum hardening, tempering, polish again, remove surface and oil contaminant and corner angle;
2) voussoir being carried out acid corrosion handles;
3) voussoir after the acid corrosion processing being carried out disacidify handles;
4) carry out antirust processing again;
5) adopt extruder to make it pass through mould the voussoir after the antirust processing, accomplish the chemical treatment and the processing of freewheel clutch voussoir.
In step 1), said polishing can be adopted light polishing machine polishing 20～40min, and the hardness after vacuum hardening, tempering reaches HRC60 ~ 64.
In step 2) in, said acid can be adopted hydrochloric acid etc., and the method that said acid corrosion is handled can be: selecting concentration under the normal temperature for use is that 20%～40% acid imports in the sour pond; Voussoir is put into the cylinder that there is the grid hollow out on the surface; Cylinder is immersed in the acid, and starter motor rotates cylinder; The whole process time that said acid corrosion is handled can be 1～3h.
In step 3), the concrete grammar that said disacidify is handled can be: sour pond is inserted in the hot water, again semi-finished product are put into the cylinder that there is the grid hollow out on the surface, then cylinder is immersed in the hot water; Starter motor rotates cylinder; The temperature of said hot water can be 40 ~ 80 ℃, saidly again semi-finished product is put into the cylinder that there is the grid hollow out on the surface, preferably floods in the cylinder all with hot water that voussoirs are as the criterion, and the whole process time that said disacidify is handled can be 30 ~ 60min.
In step 4), the concrete grammar of said antirust processing can be: the semi-finished product after disacidify is handled are put into centrifuge and are dried, and the semi-finished product after will drying are earlier put into mixer, add antirust oil again, stir.
In step 5), it is raw-material mould that said mould can adopt with wolfram steel.
The dimensional accuracy of the voussoir that obtains and the precision that surface roughness approaches mould; Dimensional accuracy reaches more than the IT6, and surface roughness reaches
The present invention has designed two procedures in addition on existing manufacturing process basis, comprise acid corrosion processing and mould extrusion modling.Because reaching 60 to 64, voussoir hardness HRC after Overheating Treatment is difficult to directly through the mould extrusion modling; Therefore the present invention takes the voussoir after the heat treatment is carried out the acid corrosion processing, thereby makes the voussoir surface form the net sectional area that a large amount of uniform small pits reduce voussoir.Because the voussoir net sectional area after hcl corrosion is handled is slightly less than the sectional area of mould, so voussoir can pass through mould smoothly through extruding.The mould that the present invention uses is to be raw material with wolfram steel; The silk cutting forms through being careful; Dimensional accuracy reaches more than the IT5; Surface roughness reaches
voussoir dimensional accuracy after its extrusion modling and reaches more than the IT6; Surface roughness reaches
and satisfies the required precision of freewheel clutch out and away, thereby has improved the service life of freewheel clutch.
Description of drawings
Fig. 1 is the structural representation of Wedge type over running clutch.
Fig. 2 is the voussoir sketch map of Wedge type over running clutch.
Fig. 3 is the hcl corrosion processing technology sketch map of the embodiment of the invention.
Fig. 4 is an extrusion molding dies intention of the present invention.
The specific embodiment
Following examples will combine accompanying drawing that the present invention is further described.
Fig. 1 is the structural representation of Wedge type over running clutch.In Fig. 1, respectively be labeled as: 1 voussoir; 2 retainers; 3 external slideway; 4 inner slides; Ring in 5; 6 outer shrouds; 7 spring bands.
Fig. 2 is the voussoir sketch map of Wedge type over running clutch.In Fig. 2, be labeled as: 1 voussoir.
Fig. 3 is the hcl corrosion processing technology sketch map of the embodiment of the invention.In Fig. 3, respectively be labeled as: 31 cylinders (cylinder surface is that the grid hollow out is so that hydrochloric acid infiltrates); 32 roller cage; 33 hydrochloric acid ponds; 34 roller shafts; 35 motors.
Fig. 4 is an extrusion molding dies intention of the present invention.In Fig. 4, respectively be labeled as: 41 supporting walls; Gathering sill on 42; 43 forming tank; 44 times gathering sills.
The chemical treatment of freewheel clutch voussoir and processing method embodiment are following:
1, uses bearing steel (GCr15); After cold-drawn, cut-out, produce monolateral voussoir 1 (see figure 2) that surplus is 0.02 ~ 0.04mm that leaves; Reach HRC60 ~ 64 through vacuum hardening, temper number again, the back with light polishing machine polish (20 ~ 40min), remove surface and oil contaminant and corner angle;
2, voussoir being carried out hcl corrosion handles.Selecting concentration under the normal temperature for use is that 20% ~ 40% hydrochloric acid imports in the hydrochloric acid pond 33, and voussoir 1 is put into the cylinder 31 that there is the grid hollow out on the surface, cylinder 31 is immersed in the hydrochloric acid 1/4～1/2 (voussoirs 1 are as the criterion to flood in the cylinder 31 all); Starter motor 35 rotates cylinder 31.About 1～the 3h of whole process;
3, the voussoir behind the hcl corrosion being carried out disacidify handles: hot water (40～80 ℃) is inserted in hydrochloric acid pond 33; Equally semi-finished product are put into the cylinder 31 that there is the grid hollow out on the surface, cylinder 31 is immersed 1/4～1/2 (whole voussoirs are as the criterion in the cylinder to flood) in the hot water; Starter motor 35 rotates cylinder 31.Whole process 30～60min;
4, carry out antirust processing again: the semi-finished product after disacidify is handled are put into centrifuge and are dried, and the semi-finished product after will drying are earlier put into mixer, add antirust oil again, stir;
5, adopt extruder to make it pass through mould the voussoir after the antirust processing.Obtain the dimensional accuracy of voussoir and the precision that surface roughness approaches mould; Dimensional accuracy reaches more than the IT6, and surface roughness reaches
Claims (10)
1. the chemical treatment of freewheel clutch voussoir and processing method is characterized in that may further comprise the steps:
1) uses bearing steel, after cold-drawn, cut-out, produce the monolateral voussoir that surplus is 0.02～0.04mm that leaves, after vacuum hardening, tempering, polish again, remove surface and oil contaminant and corner angle;
2) voussoir being carried out acid corrosion handles;
3) voussoir after the acid corrosion processing being carried out disacidify handles;
4) carry out antirust processing again;
5) adopt extruder to make it pass through mould the voussoir after the antirust processing, accomplish the chemical treatment and the processing of freewheel clutch voussoir.
2. the chemical treatment of freewheel clutch voussoir as claimed in claim 1 and processing method is characterized in that in step 1), and said polishing is to adopt light polishing machine polishing 20～40min.
3. the chemical treatment of freewheel clutch voussoir as claimed in claim 1 and processing method is characterized in that in step 2) in, hydrochloric acid is adopted in said acid.
4. the chemical treatment of freewheel clutch voussoir as claimed in claim 1 and processing method; It is characterized in that in step 2) in; The method that said acid corrosion is handled is: selecting concentration under the normal temperature for use is that 20%～40% acid imports in the sour pond, and voussoir is put into the cylinder that there is the grid hollow out on the surface, and cylinder is immersed in the acid; Starter motor rotates cylinder.
5. the chemical treatment of freewheel clutch voussoir as claimed in claim 1 and processing method is characterized in that in step 2) in, the whole process time that said acid corrosion is handled is 1～3h.
6. the chemical treatment of freewheel clutch voussoir as claimed in claim 1 and processing method; It is characterized in that in step 3); The concrete grammar that said disacidify is handled is: sour pond is inserted in the hot water, again semi-finished product are put into the cylinder that there is the grid hollow out on the surface, then cylinder is immersed in the hot water; Starter motor rotates cylinder.
7. the chemical treatment of freewheel clutch voussoir as claimed in claim 6 and processing method, the temperature that it is characterized in that said hot water is 40 ~ 80 ℃.
8. the chemical treatment of freewheel clutch voussoir as claimed in claim 1 and processing method; It is characterized in that in step 3); Saidly again semi-finished product are put into the cylinder that there is the grid hollow out on the surface; Be to flood in the cylinder all with hot water that voussoirs are as the criterion, the whole process time that said disacidify is handled can be 30 ~ 60min.
9. the chemical treatment of freewheel clutch voussoir as claimed in claim 1 and processing method; It is characterized in that in step 4); The concrete grammar of said antirust processing is: the semi-finished product after disacidify is handled are put into centrifuge and are dried; Semi-finished product after will drying are earlier put into mixer, add antirust oil again, stir.
10. the chemical treatment of freewheel clutch voussoir as claimed in claim 1 and processing method is characterized in that in step 5), and it is raw-material mould that said mould adopts with wolfram steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210182382.5A CN102689144B (en) | 2012-06-05 | 2012-06-05 | Chemical treatment and processing method of overrunning clutch wedge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210182382.5A CN102689144B (en) | 2012-06-05 | 2012-06-05 | Chemical treatment and processing method of overrunning clutch wedge |
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| CN102689144A true CN102689144A (en) | 2012-09-26 |
| CN102689144B CN102689144B (en) | 2014-11-05 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192238A (en) * | 2013-04-24 | 2013-07-10 | 厦门大学 | Processing method of besides-star wheel ditch groove of overrunning coupler |
| CN104668906A (en) * | 2015-01-29 | 2015-06-03 | 中南大学 | Manufacturing process for inclined supporting block of overrunning clutch |
| CN108246802A (en) * | 2018-03-02 | 2018-07-06 | 武汉理工大学 | A kind of milling method of freewheel clutch voussoir |
| CN109667850A (en) * | 2018-12-29 | 2019-04-23 | 潍柴动力股份有限公司 | One-way clutch and fluid torque-converter for fluid torque-converter |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192238A (en) * | 2013-04-24 | 2013-07-10 | 厦门大学 | Processing method of besides-star wheel ditch groove of overrunning coupler |
| CN103192238B (en) * | 2013-04-24 | 2016-01-27 | 厦门大学 | Freewheel clutch out star wheel groove processing method |
| CN104668906A (en) * | 2015-01-29 | 2015-06-03 | 中南大学 | Manufacturing process for inclined supporting block of overrunning clutch |
| CN108246802A (en) * | 2018-03-02 | 2018-07-06 | 武汉理工大学 | A kind of milling method of freewheel clutch voussoir |
| CN108246802B (en) * | 2018-03-02 | 2019-10-25 | 武汉理工大学 | A kind of milling method of freewheel clutch voussoir |
| CN109667850A (en) * | 2018-12-29 | 2019-04-23 | 潍柴动力股份有限公司 | One-way clutch and fluid torque-converter for fluid torque-converter |
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| CN102689144B (en) | 2014-11-05 |
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