CN103192238A - Processing method of besides-star wheel ditch groove of overrunning coupler - Google Patents
Processing method of besides-star wheel ditch groove of overrunning coupler Download PDFInfo
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- CN103192238A CN103192238A CN2013101457838A CN201310145783A CN103192238A CN 103192238 A CN103192238 A CN 103192238A CN 2013101457838 A CN2013101457838 A CN 2013101457838A CN 201310145783 A CN201310145783 A CN 201310145783A CN 103192238 A CN103192238 A CN 103192238A
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- freewheel clutch
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Abstract
The invention discloses a processing method of a besides-star wheel ditch groove of an overrunning coupler, relating to clutches. The invention provides a processing method of besides-star wheel ditch groove of overrunning coupler, which guarantees high manufacturing precision for the besides-star wheel ditch groove of the overrunning coupler. The processing method comprises the following steps: 1) processing a log spiral ditch groove of besides-star wheel on the overrunning coupler, wherein the ditch groove is a penetrated ditch groove; 2) performing carburizing treatment on the besides-star wheel ditch groove; 3) performing acid corrosion treatment on the besides-star wheel ditch groove; 4) performing deacidification treatment on the besides-star wheel; 5) performing anti-rust treatment on the disacidified besides-star wheel; and 6) roller forming the besides-star wheel ditch groove after the anti-rust treatment to finish the processing of the besides-star wheel ditch groove of the overrunning coupler. The service life of the overrunning coupler is prolonged, the noise is reduced, and the limit rotating speed and carrying capacity of the overrunning coupler are improved.
Description
Technical field
The present invention relates to clutch, especially relate to a kind of freewheel clutch out star wheel groove processing method.
Background technology
Freewheel clutch is to realize between prime mover and the working machine or the vitals of transmission of power and separation function between machine intimate driving shaft and the driven shaft, it is the conversion that utilizes velocity variations or the direction of rotation of driving and driven part, realizes the device of clutch function voluntarily.Because freewheel clutch greatly influences its service behaviour rubbing, push and produce deformation between its roller and the out star wheel groove under high pulling torque and the high rotating speed, therefore need have high accuracy and high-intensity characteristic.
Traditional freewheel clutch out star wheel groove processing method is made up of operations such as forging, machining, heat treatment, grindings, Jiang Long (the river dragon. the new processing technology of star-wheel is inquired in the freewheel clutch. the Chinese manufacturing informationization, 2006,35(11): 74-76) reported the new processing technology of star-wheel in a kind of freewheel clutch, wherein in this procedure of broaching processing, the wearing and tearing of broaching tool produce bigger form error to out star wheel groove moulding meeting, can cause error accumulation again after grinding.These error accumulations cause the life-span of freewheel clutch short, bear phenomenons such as rotating speed is low, bearing capacity difference.
In sum, traditional freewheel clutch out star wheel processing method is difficult to shaped grooves is carried out microstoning.
Summary of the invention
The objective of the invention is to the above-mentioned deficiency at existing freewheel clutch out star wheel groove processing method, a kind of freewheel clutch out star wheel groove processing method that makes freewheel clutch out star wheel groove have the higher accuracy of manufacture is provided.
The present invention includes following steps:
1) at freewheel clutch processing out star wheel log spiral groove, described groove is for running through groove;
2) the out star wheel groove is carried out Carburization Treatment;
3) the out star wheel groove being carried out acid corrosion handles;
4) out star wheel being carried out disacidify handles;
5) out star wheel after the disacidify processing is carried out antirust processing;
6) after the antirust processing, the out star wheel groove is carried out roll forming processing, finish the processing of freewheel clutch out star wheel groove.
In step 2) in, the condition of described Carburization Treatment can be: case hardness HRC58～64, centre hardness HRC30～42, carburizing depth 1.2～1.5mm.
In step 3), it is 20%～40% sulfuric acid that described acid can be adopted concentration; Described acid corrosion processing method can be: be that 20%～40% sulfuric acid is poured in the sour pond with concentration, out star wheel is put into sour pond soak 10～20min, remove cementation zone, putting into the surface after pulling out has the cylinder of hollow out grid, cylinder is immersed sour pond, make out star wheel all immerse in the acid starter motor, motor drives cylinder uniform rotation 30～50min with 80～120r/min, makes surface corrosion even.
In step 4), described acid-treated method can be: the semi-finished product behind the sulfuric acid corrosion are carried out the hot water disacidify handle, clean with cold water.
In step 6), the described concrete grammar that the out star wheel groove is carried out roll forming processing can be: anchor clamps are fixed on the CNC milling machine work stage, the anchor clamps of again the freewheel clutch out star wheel being packed into, the bolt of adjusting anchor clamps makes freewheel clutch out star wheel axis and jig main body dead in line, the CNC milling machine tool setting makes cutter and out star wheel fit tightly at width, calls the program of finishing in advance and makes cutter carry out rolling and processing according to the projected path feed; Described cutter can adopt the rod member of wolfram steel material and the cutter that special needle bearing is formed, and the outer surface of needle bearing forms through grinding, and dimensional accuracy reaches more than the IT3, and surface roughness reaches Ra0.2.
The present invention after series of processes such as forging, machining and heat treatment, the two procedures that directly adopts the present invention to design, namely sulfuric acid corrosion is handled and the CNC milling machine roll forming.Wherein the out star wheel groove is carried out sulfuric acid corrosion and handle, form a large amount of uniform tiny pits.Adopting roll forming to add man-hour, owing on the out star wheel groove after sulfuric acid corrosion is handled a large amount of tiny pits are arranged, according to Hertz theory, its composite curve radius is about the radius of curvature of small rut when the shaping mould tool contacts with groove, the extruding force of contact-making surface and composite curve radius square is directly proportional again, therefore, the extruding force when sulfuric acid treatment has reduced moulding greatly is convenient to groove through the dedicated tool roll forming.The cutter that the present invention uses is made up of rod member and the special needle bearing of wolfram steel material, the needle bearing outer surface forms through grinding, dimensional accuracy reaches more than the IT3, surface roughness reaches Ra0.2, and the groove dimensions precision after its roll forming reaches IT4, and surface roughness reaches Ra0.4, satisfy the required precision of freewheel clutch, thereby improved the service life of freewheel clutch, reduced noise, improved limit speed and the bearing capacity of freewheel clutch.
Description of drawings
Fig. 1 is the structural representation of freewheel clutch.In Fig. 1, respectively be labeled as: 1, freewheel clutch out star wheel, 2, roller, 3, inner ring.
Fig. 2 is sulfuric acid corrosion process schematic representation of the present invention.In Fig. 2, respectively be labeled as: 4, hollow out cylindrical roller, 5, the sulfuric acid fermentation vat.
Fig. 3 is CNC milling machine processing schematic diagram of the present invention.In Fig. 3, respectively be labeled as: 1, freewheel clutch out star wheel, 6, dedicated tool, 7, jig main body.
Fig. 4 is the matched clamp schematic diagram.In Fig. 4, respectively be labeled as: 7, jig main body, 8, bolt.
Fig. 5 is special cutter and out star wheel groove processing position view.In Fig. 5, respectively be labeled as: 1, freewheel clutch out star wheel, 6, dedicated tool, 9, cutter path.
The specific embodiment
Following examples will the present invention is further illustrated by reference to the accompanying drawings.
Referring to Fig. 1～5, the embodiment of the invention may further comprise the steps:
1) swage forging is forged cylindrical freewheel clutch out star wheel 1 blank; With engine lathe processing freewheel clutch out star wheel 1 blank lateral surface, the outer round surface dimensional accuracy that obtains should reach IT6, and surface roughness reaches Ra1.6; With engine lathe boring, and the boring endoporus is to broaching processing required size; To the processing of broaching of freewheel clutch out star wheel 1 matrix, obtain the log spiral groove again, flute surfaces reserves the surplus of 0.02～0.04mm;
2) Carburization Treatment to freewheel clutch out star wheel 1 requires case hardness HRC58～64, centre hardness HRC30～42.Carburizing depth 1.2～1.5mm;
3) semi-finished product after the heat treatment being carried out sulfuric acid corrosion handles.Selecting concentration under the normal temperature for use is that the sulfuric acid of 20%-40% is inserted in the sulfuric acid fermentation vat 5, behind 10～20min semi-finished product are put into hollow out cylindrical roller 4, hollow out cylindrical roller 4 is immersed in the sulfuric acid 1/3, make hollow out cylindrical roller 4 with 80～120r/min uniform rotation, the about 30～50min of whole process;
4) semi-finished product behind the sulfuric acid corrosion are carried out the hot water disacidify and handle, carry out cold water again and clean and antirust processing;
5) after the antirust processing, with CNC milling machine freewheel clutch out star wheel 1 groove is carried out roll forming processing (referring to Fig. 3), dedicated tool 6 is installed and is regulated height, flute surfaces can be contacted with dedicated tool 6 fully at width.Freewheel clutch out star wheel 1 is fixed on the jig main body 7, uses bolt 8 with its clamping again.Programming forms cutter path 9 makes dedicated tool 6 move along particular track, applies certain pressure, utilizes the needle bearing outer ring to roll, and freewheel clutch out star wheel 1 groove is carried out roll forming processing.
The dedicated tool that relates among the present invention is made up of knife bar and needle bearing.Knife bar can be the wolfram steel rod member of length 150mm, diameter 10mm, and the needle bearing model is HK1012RS.The needle bearing outer surface need finish grind processing, and dimension precision requirement reaches IT3, and surface roughness reaches Ra0.2.Needle bearing is placed on the knife bar, and end face and knife bar one are held level with both hands together.
The matched clamp that relates among the present invention is made up of jig main body and bolt.Jig main body is ironcasting, external diameter 120mm, and thickness 100mm, there is coaxial stepped hole inside, and last hole internal diameter is 100mm, hole depth 70mm, following hole internal diameter is 90mm, hole depth 20mm.Bolt in side, last hole far from uniform 3 M20 in upper surface 35mm place.
The present invention is directed to the deficiency of existing freewheel clutch out star wheel groove processing method, a kind of processing method that makes freewheel clutch out star wheel groove have the higher accuracy of manufacture is provided.The present invention includes sulfuric acid corrosion handles and CNC milling machine machine-shaping.The present invention takes that the semi-finished product out star wheel groove that forms through machining is carried out sulfuric acid corrosion and handles, and makes the out star wheel flute surfaces form a large amount of uniform tiny pits, reduces the extruding force that dedicated tool adds man-hour.The dedicated tool that the present invention uses is made up of the rod member of wolfram steel material and special needle bearing, the needle bearing outer surface is through grinding, dimensional accuracy reaches more than the IT3, surface roughness reaches Ra0.2, and the out star wheel groove dimensions precision after its roll forming reaches the IT4 level, and surface roughness reaches Ra0.4, satisfy the required precision of out star wheel groove, thereby improved the service life of freewheel clutch, reduced noise, improved limit speed and the bearing capacity of freewheel clutch.
Claims (7)
1. freewheel clutch out star wheel groove processing method is characterized in that may further comprise the steps:
1) at freewheel clutch processing out star wheel log spiral groove, described groove is for running through groove;
2) the out star wheel groove is carried out Carburization Treatment;
3) the out star wheel groove being carried out acid corrosion handles;
4) out star wheel being carried out disacidify handles;
5) out star wheel after the disacidify processing is carried out antirust processing;
6) after the antirust processing, the out star wheel groove is carried out roll forming processing, finish the processing of freewheel clutch out star wheel groove.
2. freewheel clutch out star wheel groove processing method according to claim 1 is characterized in that in step 2) in, the condition of described Carburization Treatment is: case hardness HRC58～64, centre hardness HRC30～42, carburizing depth 1.2～1.5mm.
3. freewheel clutch out star wheel groove processing method according to claim 1 is characterized in that in step 3), and it is 20%～40% sulfuric acid that concentration is adopted in described acid.
4. freewheel clutch out star wheel groove processing method according to claim 1, it is characterized in that in step 3), described acid corrosion processing method is: be that 20%～40% sulfuric acid is poured in the sour pond with concentration, out star wheel is put into sour pond soak 10～20min, remove cementation zone, putting into the surface after pulling out has the cylinder of hollow out grid, cylinder is immersed sour pond, make out star wheel all immerse in the acid, starter motor, motor drives cylinder uniform rotation 30～50min with 80～120r/min, makes surface corrosion even.
5. freewheel clutch out star wheel groove processing method according to claim 1 is characterized in that in step 4) described acid-treated method is: the semi-finished product behind the sulfuric acid corrosion are carried out the hot water disacidify handle, clean with cold water.
6. freewheel clutch out star wheel groove processing method according to claim 1, it is characterized in that in step 6), the described concrete grammar that the out star wheel groove is carried out roll forming processing is: anchor clamps are fixed on the CNC milling machine work stage, the anchor clamps of again the freewheel clutch out star wheel being packed into, the bolt of adjusting anchor clamps makes freewheel clutch out star wheel axis and jig main body dead in line, the CNC milling machine tool setting makes cutter and out star wheel fit tightly at width, calls the program of finishing in advance and makes cutter carry out rolling and processing according to the projected path feed.
7. as freewheel clutch out star wheel groove processing method as described in the claim 6, it is characterized in that described cutter adopts the rod member of wolfram steel material and the cutter that special needle bearing is formed, the outer surface of needle bearing forms through grinding, and dimensional accuracy reaches more than the IT3, and surface roughness reaches Ra0.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310145783.8A CN103192238B (en) | 2013-04-24 | 2013-04-24 | Freewheel clutch out star wheel groove processing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310145783.8A CN103192238B (en) | 2013-04-24 | 2013-04-24 | Freewheel clutch out star wheel groove processing method |
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| Publication Number | Publication Date |
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| CN103192238A true CN103192238A (en) | 2013-07-10 |
| CN103192238B CN103192238B (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310145783.8A Active CN103192238B (en) | 2013-04-24 | 2013-04-24 | Freewheel clutch out star wheel groove processing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108213834A (en) * | 2018-01-09 | 2018-06-29 | 盐城工学院 | A kind of roll processing device and system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2895867Y (en) * | 2006-05-18 | 2007-05-02 | 罗庆繁 | Overdrive clutch |
| US20090199678A1 (en) * | 2005-03-28 | 2009-08-13 | Koji Irikura | Automatic traction enhancement for a transaxle |
| CN102554290A (en) * | 2012-01-07 | 2012-07-11 | 宁波滚石自动化科技有限公司 | Turning tool and ball screw nut roller path machining method by using same |
| CN102678759A (en) * | 2012-06-01 | 2012-09-19 | 厦门大学 | Processing method for bearing groove |
| CN102689144A (en) * | 2012-06-05 | 2012-09-26 | 厦门大学 | Chemical treatment and processing method of overrunning clutch wedge |
| CN102773676A (en) * | 2012-08-16 | 2012-11-14 | 玉环普天单向器有限公司 | Manufacture method of overrunning coupler directional sleeve and die thereof |
-
2013
- 2013-04-24 CN CN201310145783.8A patent/CN103192238B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090199678A1 (en) * | 2005-03-28 | 2009-08-13 | Koji Irikura | Automatic traction enhancement for a transaxle |
| CN2895867Y (en) * | 2006-05-18 | 2007-05-02 | 罗庆繁 | Overdrive clutch |
| CN102554290A (en) * | 2012-01-07 | 2012-07-11 | 宁波滚石自动化科技有限公司 | Turning tool and ball screw nut roller path machining method by using same |
| CN102678759A (en) * | 2012-06-01 | 2012-09-19 | 厦门大学 | Processing method for bearing groove |
| CN102689144A (en) * | 2012-06-05 | 2012-09-26 | 厦门大学 | Chemical treatment and processing method of overrunning clutch wedge |
| CN102773676A (en) * | 2012-08-16 | 2012-11-14 | 玉环普天单向器有限公司 | Manufacture method of overrunning coupler directional sleeve and die thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108213834A (en) * | 2018-01-09 | 2018-06-29 | 盐城工学院 | A kind of roll processing device and system |
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| CN103192238B (en) | 2016-01-27 |
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