CN107355486A - New-energy automobile slidably engages set and its manufacturing process - Google Patents

New-energy automobile slidably engages set and its manufacturing process Download PDF

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Publication number
CN107355486A
CN107355486A CN201710672961.0A CN201710672961A CN107355486A CN 107355486 A CN107355486 A CN 107355486A CN 201710672961 A CN201710672961 A CN 201710672961A CN 107355486 A CN107355486 A CN 107355486A
Authority
CN
China
Prior art keywords
mould
new
energy automobile
slidably engages
cold forging
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.)
Pending
Application number
CN201710672961.0A
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Chinese (zh)
Inventor
张太良
万永福
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU WINNER MACHINERY CO Ltd
Original Assignee
JIANGSU WINNER MACHINERY CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JIANGSU WINNER MACHINERY CO Ltd filed Critical JIANGSU WINNER MACHINERY CO Ltd
Priority to CN201710672961.0A priority Critical patent/CN107355486A/en
Publication of CN107355486A publication Critical patent/CN107355486A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00Extruding metal; Impact extrusion
    • B21C23/02Making uncoated products
    • B21C23/20Making uncoated products by backward extrusion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C25/00Profiling tools for metal extruding
    • B21C25/02Dies
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D11/00Clutches in which the members have interengaging parts
    • F16D11/16Clutches in which the members have interengaging parts with clutching members movable otherwise than only axially
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D11/00Clutches in which the members have interengaging parts
    • F16D2011/002Clutches in which the members have interengaging parts using an external and axially slidable sleeve for coupling the teeth of both coupling components together

Abstract

The invention discloses a kind of new-energy automobile to slidably engage set, and the inwall for slidably engaging set body is provided with engaging tooth, and its inner chamber is two different cylindrical structures of size internal diameter;By implementing the manufacturing process of cold forging backward extrusion twice step by step, moment shaping new-energy automobile slidably engages the engaging tooth that set inwall is set, instead of traditional machining, production efficiency height saves raw material, reduces production cost;Product accuracy height, extrusion forming metal streamline are not cut off simultaneously, and grain structure is fine and close, improves Gear Surface Strength, product mechanical performance high quality is good.

Description

New-energy automobile slidably engages set and its manufacturing process
Technical field
The present invention relates to slidably engage set manufacture, more particularly to a kind of new-energy automobile slidably engage set and its manufacture work Skill.
Background technology
It is new-energy automobile driving parts to slidably engage set, and either surface quality and mechanical performance all has higher requirements. State Intellectual Property Office discloses a kind of slidably engages set, Publication No. for medium-heavy automobile drive axle CN205244173U, it includes:Set body is slidably engaged, the end face for slidably engaging set body is provided with engaging tooth, described The engaging tooth flank of tooth is distributed in height ledge structure shape, and the engaging tooth flank increase has cydariform amount.This slidably engages set and reduced The area of set and fixed engagement set face is slidably engaged, the two oil film is adhered area and also accordingly reduces, it is effective to solve Medium-heavy automobile user in use due to slidably engage set and fixed engagement set depart from difficulty cause differential gear, The problem of engaging sleeve or undue tire wear, taken off using after the new construction for slidably engaging set, slidably engaging set and being covered with fixed engagement Failure from difficulty substantially eliminates;The service life of automobile drive axle is also effectively raised, reduces maintenance cost.Slip is nibbled The existing manufacturing process of trap:First, directly being produced from bar using cutting technology, this technique weak point is that cutting adds Work low production efficiency, it is suitable only for single-piece or small lot production application;Second, then hot forging is carried out on machining shaping inwall again Gear, two kinds of production technologies are all the method shaping inner wall gears using traditional machining, suitable small lot production, equipment Fund input is big, and low production efficiency, stock utilization is low, production cycle length, high processing costs;Secondly, in cutting process Metal streamline is cut off, and flank of tooth compactness is bad, bad mechanical property, it is difficult to meets that the kitting quality of new-energy automobile will Ask.
The content of the invention
The present invention provides a kind of new-energy automobile of forging and molding and slidably engages set, and this slidably engages set, with short production cycle, Stock utilization is high, and processing cost is low, and metal streamline is not cut off, and grain structure is fine and close, improves Gear Surface Strength mechanical performance Height, it disclosure satisfy that the supporting requirement of auto parts and components.
Because the hollow cylinder inner wall for slidably engaging set size internal diameter is provided with engaging tooth, so as to be slidably engaged set Manufacture brings difficulty, while is slided present invention is generally directed to existing using traditional machining shaping internal gear manufacture new-energy automobile The deficiency of dynamic engaging sleeve technique, there is provided one kind is slided using cold forging extrusion molding inwall engaging tooth fabrication process new-energy automobile Dynamic engaging sleeve, the process route is reasonable, and equipment funds input is little, and production efficiency is high, saves raw material, and product mechanical performance is high Quality is good.
The present invention is achieved by the following technical solution:
New-energy automobile slidably engages set, including hollow structure slidably engages set body, described to slidably engage set body Inwall be provided with engaging tooth, the inner chamber for slidably engaging set body is two different cylindrical structures of size internal diameter.
Its outer wall corresponds to small internal diameter hollow circular cylinder end face in shape is restrained, and circumferential groove is additionally provided with its outer wall.
Its manufacturing process comprises the following steps:1. blanking:Diameter of rod is selected, bar is grown as needed for drawing size cut Degree;2. spheroidizing:Bar is fitted into stove and is heated to 720 DEG C of -780 DEG C of progress spheroidizings, Oxygen potential >=90%, hardness≤ 80HRC;3. base:Peeling scale removal and chamfering;4. ball blast:Blank after base is sent into shot-blasting machine and made at sandblasting Reason, increase surface Ra values;5. lubricate:Surface lubrication processing is carried out after blank blasting treatment;6. cold forging is extruded into shape:By lubricated Blank afterwards is put into cold forging and squeezed in cavity plate, the backward extrusion under normal temperature condition, and cold forging is extruded into the hollow circular cylinder knot that shape carries bottom Structure, the inwall of hollow circular cylinder are provided with engaging tooth;7. cold forging is extruded into shape again:By the hollow circular cylinder structure with bottom Blank, insert again in back extrusion concave, to its bottom backward extrusion under normal temperature condition, cold forging is extruded into the small internal diameter that shape carries thin bottom Hollow circular cylinder structure, the inwall of small internal diameter hollow circular cylinder are provided with engaging tooth, that is, are formed with thin bottom, size internal diameter The blank of hollow circular cylinder structure;8. remove thin bottom.
Its manufacturing process also includes machining and heat treatment step:Machining:Cold forging again is extruded into the blank after shape by Drawing requirement carries out turnery processing routinely to adapt to install needs;Heat treatment:Case-carbonizing is carried out to product after machining Processing.
Cold forging is squeezed in forming step again, and back extrusion concave includes upper die and lower die, upper mould guide sleeve, pressure block, push rod, on Mould is the upper coarse and lower fine taper shaft of multi-step, the upper uniform axial tooth profile groove of mould die head outer wall, and upper mould is oriented to and is set on mould Hold surrounding;Lower mould is two axially extending bore circle sets, and pressure block is located at the mold cavity bottoms of lower mould, and push rod is located under pressure block, under Blank is placed in mould die cavity;Upper mould guide sleeve external diameter matches with lower mould die cavity internal diameter, upper mould and lower mould coaxial cooperation.
Axial tooth profile groove work ligament length on upper mould die head is 2-4mm.
Lower mould is two axially extending bore circle sets, and axially extending bore inner circle covers the taper that outer wall is 105 °, and cylindrical set inwall is also 105 ° of taper, both are interference fitted the lower radial reinforced structure of mould of composition.
The present invention has the advantages that compared with prior art:
1. cold forging of the present invention, which is extruded into shape, to be implemented step by step, mold arrangement is on single-station forcing press, to supporting pressure Machine tonnage is relatively also small, so as to greatly reduce the investment of corollary equipment;
2. it is all that moment completion forging is squeezed on forcing press that cold forging of the present invention, which squeezes shaping inner wall engaging tooth, traditional cut instead of Processing is cut, improves stock utilization, production efficiency is high, reduces production cost;
It is all that once property forging is extruded into shape, product accuracy on forcing press that 3. cold forging of the present invention, which squeezes shaping inner wall engaging tooth, High, extrusion forming metal streamline is not cut off, and grain structure is fine and close, improves Gear Surface Strength, product mechanical performance high quality is good.
Brief description of the drawings
Fig. 1 is that new-energy automobile slidably engages nested structure schematic diagram in the embodiment of the present invention;
Fig. 2 is Fig. 1 A-A sectional views;
Fig. 3 is blank deformation process chart of the embodiment of the present invention;
Fig. 4 is that cold forging squeezes back extrusion concave structural representation in forming step to the embodiment of the present invention again.
Sequence number in figure:1st, engaging tooth, 2, bottom, 3, thin bottom, 4, the hollow circular cylinder structure with bottom, 5, with thin bottom , the hollow circular cylinder structure of size internal diameter, 6, upper mould, 7, lower mould, 8, upper mould guide sleeve, 9, pressure block, 10, push rod, 11, axle To serrate slot, 12, circumferential groove.
Embodiment
Technical scheme is described in further detail by way of example and in conjunction with the accompanying drawings.
Embodiment:Referring to shown in Fig. 1 and Fig. 2, a kind of new-energy automobile slidably engages set, and it is hollow circular cylinder structure, Inner chamber is two different cylindrical structures of size internal diameter, and inwall is provided with engaging tooth 1;Its outer wall corresponds to small internal diameter hollow circular cylinder End face is additionally provided with circumferential groove 12 in shape is restrained on its outer wall.
Referring to shown in Fig. 3 and Fig. 4, the new-energy automobile slidably engages set manufacturing process and comprised the following steps:1. blanking:It is former Material texture is 20CrMnTiH, selects diameter of rod, and metal bar is intercepted using circular saw;2. spheroidizing:Bar is loaded 720 DEG C of -780 DEG C of progress spheroidizings, Oxygen potential >=90%, hardness≤80HRC are heated in stove;3. base:Peeling removes table Face oxide and chamfering;4. ball blast:Blank after base is sent into shot-blasting machine and makees blasting treatment, increases surface Ra values;5. moisten It is sliding:Surface lubrication processing is carried out after blank blasting treatment;6. cold forging is extruded into shape:By the blank after lubricated be put into cold forging squeeze it is recessed In mould, the backward extrusion under normal temperature condition, cold forging is extruded into the hollow circular cylinder structure 4 that shape carries bottom, the inwall of hollow circular cylinder It is provided with engaging tooth 1;7. cold forging is extruded into shape again:By the blank of the hollow circular cylinder structure 4 with bottom, anti-squeeze is inserted again In cavity plate, back extrusion concave includes upper mould 6, lower mould 7, upper mould guide sleeve 8, pressure block 9, push rod 10, under upper mould 6 is thick in multi-step Thin taper shaft, the uniform axial tooth profile groove 11 of the upper die head outer wall of mould 6, the ligament length that works of axial tooth profile groove 11 is 2-4mm, upper mould Guide sleeve 8 is arranged on the upper end surrounding of mould 6 and matched with the upper profile of mould 6;Lower mould 7 is two axially extending bore circle sets, axially logical The taper that hole inner circle set outer wall is 105 °, cylindrical set inwall are also 105 ° of taper, and it is radially strong that both are interference fitted the lower mould of composition Change structure, mould is not easy cracking damage, and pressure block 9 is located at the mold cavity bottoms of lower mould 7, and push rod 10 is located under pressure block 9, lower mould Blank is placed in 7 die cavitys;The upper external diameter of mould guide sleeve 8 matches with the lower die cavity internal diameter of mould 7, upper mould 6 and the lower coaxial cooperation of mould 7, To its backward extrusion of bottom 2 under normal temperature condition, cold forging is extruded into the small internal diameter hollow circular cylinder structure that shape carries thin bottom 3, in small internal diameter The inwall of hollow cylinder is provided with engaging tooth 1, that is, forms the blank with thin bottom, size internal diameter hollow circular cylinder structure 5; 8. machine:The turnery processing that the blank after shape is carried out routinely by drawing is extruded into cold forging again to be needed with adapting to installation Will, while remove thin bottom 3;9. it is heat-treated:To after machining product carry out case-carbonizing processing, carburized layer 0.6-1.0mm, heat at Case hardness after reason is 58-60HRC.
Core technology of the present invention, which is embodied in, implements cold forging backward extrusion twice step by step, and moment shaping new-energy automobile slidably engages The engaging tooth that inwall is set is covered, instead of traditional machining, production efficiency height saves raw material, reduces and be produced into This;Product accuracy height, extrusion forming metal streamline are not cut off simultaneously, and grain structure is fine and close, improves Gear Surface Strength, product Mechanical performance high quality is good.Mould is oriented to and is set on mould upper end surrounding and matches with upper die topography in the present invention;On simultaneously Mould guide sleeve external diameter matches with lower mould die cavity internal diameter, solves the problems, such as concentricity, it is ensured that upper mould and lower mould coaxial cooperation.
Embodiment does not form the limit to the scope of the present invention only to facilitate understand technical scheme System, it is every without departing from any letter perhaps made in technical solution of the present invention according to the technical spirit of the present invention to above scheme Single modification, equivalent variations and modification, still fall within the scope of the present invention.

Claims (8)

1. new-energy automobile slidably engages set, including hollow structure slidably engages set body, the set body that slidably engages (1) inwall is provided with engaging tooth, it is characterised in that:The inner chamber for slidably engaging set body is two different cylinders of size internal diameter Body structure.
2. new-energy automobile according to claim 1 slidably engages set, it is characterised in that:It is hollow that its outer wall corresponds to small internal diameter (12) cylindrical end face is additionally provided with circumferential groove in shape is restrained on its outer wall.
3. new-energy automobile according to claim 2 slidably engages set, it is characterised in that:Its manufacturing process includes following step Suddenly:1. blanking:Select diameter of rod, the bar length as needed for drawing size cut;2. spheroidizing:Bar is fitted into stove and added Hot to 720 DEG C -780 DEG C of progress spheroidizings, Oxygen potential >=90%, hardness≤80HRC;3. base:Peeling scale removal and Chamfering;4. ball blast:Blank after base is sent into shot-blasting machine and makees blasting treatment, increases surface Ra values;5. lubricate:Blank sandblasting Surface lubrication processing is carried out after processing;6. cold forging is extruded into shape:Blank after lubricated is put into cold forging to squeeze in cavity plate, in normal temperature Under the conditions of backward extrusion, (4) cold forging is extruded into shape with the hollow circular cylinder structure of bottom (2), the inwall of hollow circular cylinder is provided with and nibbled Close tooth (1);7. cold forging is extruded into shape again:By the blank of the hollow circular cylinder structure with bottom (2), back extrusion concave is inserted again In, to the (2) backward extrusion of its bottom under normal temperature condition, cold forging is extruded into shape and carries the small internal diameter hollow circular cylinder structure of thin bottom (3), small The inwall of internal diameter hollow circular cylinder is provided with engaging tooth, that is, is formed with thin bottom, size internal diameter hollow circular cylinder structure (5) Blank;8. remove thin bottom (3).
4. new-energy automobile according to claim 3 slidably engages set, it is characterised in that:Its manufacturing process also adds including machine Work and heat treatment step:Machining:The blank after shape is extruded into cold forging again and carries out turnery processing routinely by drawing To adapt to install needs;Heat treatment:Case-carbonizing processing is carried out to product after machining.
5. the new-energy automobile according to claim 3 or 4 slidably engages set, it is characterised in that:Cold forging is extruded into shape step again In rapid, back extrusion concave include upper mould (6), lower mould (7), upper mould guide sleeve (8), pressure block (9), push rod (10), upper mould is (6) in multi-step Thin taper shaft under slightly, (6) (11), (8) upper mould guide sleeve is arranged on mould (6) upper end four to the uniform axial tooth profile groove of die head outer wall to upper mould Week;(7) lower mould is two axially extending bores circle set, (9) pressure block be located at the mold cavity bottoms of lower mould (7), push rod be (10) located at pressure block (9) it Under, (7) lower mould places blank in die cavity;(8) (7) die cavity internal diameter matches external diameter upper mould guide sleeve with lower mould, upper mould (6) with lower mould (7) Coaxial cooperation.
6. new-energy automobile according to claim 5 slidably engages set, it is characterised in that:The upper mould (6) axial tooth on die head The shape groove ligament length that (11) works is 2-4mm.
7. new-energy automobile according to claim 5 slidably engages set, it is characterised in that:(7) lower mould is two axially extending bores Circle set, the taper that axially extending bore inner circle set outer wall is 105 °, cylindrical set inwall are also 105 ° of taper, and both are interference fitted composition The lower radial reinforced structure of mould.
8. new-energy automobile according to claim 6 slidably engages set, it is characterised in that:(7) lower mould is two axially extending bores Circle set, the taper that axially extending bore inner circle set outer wall is 105 °, cylindrical set inwall are also 105 ° of taper, and both are interference fitted composition The lower radial reinforced structure of mould.
CN201710672961.0A 2017-08-09 2017-08-09 New-energy automobile slidably engages set and its manufacturing process Pending CN107355486A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710672961.0A CN107355486A (en) 2017-08-09 2017-08-09 New-energy automobile slidably engages set and its manufacturing process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710672961.0A CN107355486A (en) 2017-08-09 2017-08-09 New-energy automobile slidably engages set and its manufacturing process

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CN107355486A true CN107355486A (en) 2017-11-17

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108044324A (en) * 2017-12-17 2018-05-18 江苏威鹰机械有限公司 Automatic gearbox sun gear manufacturing process and its cold forging Extruding die
CN110899605A (en) * 2019-10-12 2020-03-24 江苏力野精工科技有限公司 Integral cold forging and stretching method for automobile chassis shock absorber shell
CN111112965A (en) * 2019-12-26 2020-05-08 江苏威鹰机械有限公司 Production process of intermediate shaft of new energy automobile transmission

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108044324A (en) * 2017-12-17 2018-05-18 江苏威鹰机械有限公司 Automatic gearbox sun gear manufacturing process and its cold forging Extruding die
CN110899605A (en) * 2019-10-12 2020-03-24 江苏力野精工科技有限公司 Integral cold forging and stretching method for automobile chassis shock absorber shell
CN111112965A (en) * 2019-12-26 2020-05-08 江苏威鹰机械有限公司 Production process of intermediate shaft of new energy automobile transmission

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