CN108916333A - A kind of combined type spinning tensioning wheel and its flow forming and molding process - Google Patents
A kind of combined type spinning tensioning wheel and its flow forming and molding process Download PDFInfo
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- CN108916333A CN108916333A CN201810489214.8A CN201810489214A CN108916333A CN 108916333 A CN108916333 A CN 108916333A CN 201810489214 A CN201810489214 A CN 201810489214A CN 108916333 A CN108916333 A CN 108916333A
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- solder joint
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- 238000009987 spinning Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000000465 moulding Methods 0.000 title claims abstract description 16
- 229910000679 solder Inorganic materials 0.000 claims abstract description 35
- 238000003466 welding Methods 0.000 claims abstract description 21
- 238000004080 punching Methods 0.000 claims abstract description 19
- 238000007592 spray painting technique Methods 0.000 claims abstract description 4
- 239000011265 semifinished product Substances 0.000 claims description 39
- 239000000047 product Substances 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
- F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
- F16H7/1254—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
- B21D22/16—Spinning over shaping mandrels or formers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/26—Making other particular articles wheels or the like
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
- F16C13/006—Guiding rollers, wheels or the like, formed by or on the outer element of a single bearing or bearing unit, e.g. two adjacent bearings, whose ratio of length to diameter is generally less than one
-
- 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
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/50—Other automobile vehicle parts, i.e. manufactured in assembly lines
-
- 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
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/18—Means for guiding or supporting belts, ropes, or chains
- F16H2007/185—Means for guiding or supporting belts, ropes, or chains the guiding surface in contact with the belt, rope or chain having particular shapes, structures or materials
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of combined type spinning tensioning wheels, including upper spoke and lower spoke, upper spoke includes upper wheel rim end, upper former end and upper central plate end, lower spokes include lower wheel rim end, lower former end and lower central plate end, upper former end and lower former end corresponding position are provided with convex algorithm, upper former end and lower former end are spot welded by projection welding to be arranged, and forms cavity groove between upper central plate end and lower central plate end.Tensioning wheel moulding process is：1）Blanking；2）Punching；3）Anti- side；4）Belling solder joint；5）Two panels welding；6）Rotary press modelling；7）Rush aperture；8）Secondary counter side；9）Last item is held；10）Anti- side three times；11）Spray painting.Using projection welding mode, together by two plate sheet weldings, production cost is reduced；Product overall weight reduces, while welding sequence is more convenient effective, facilitates processing, under the premise of guaranteeing product service performance, realizes product lightweight production.
Description
Technical field
The invention belongs to auto parts and components processing and manufacturing technologies, and in particular to a kind of combined type spinning tensioning wheel and its
Flow forming and molding process.
Background technique
In existing tensioning wheel upper spoke be usually with lower spoke pass through welding to complete to be fixedly connected, while in upper spoke and
It is further strengthened between lower spoke by fasteners such as rivets.However, the structure processing technology is relative complex, rivet is fixed
Structure leads to overall appearance unsightly, while there are gaps for upper spoke and lower spoke joint place, affect the usability of tensioning wheel
Energy.
Summary of the invention
Aiming at the problems existing in the prior art, what the present invention designed is designed to provide a kind of combined type spinning tensioning wheel
And its flow forming and molding process, optimize moulding process, realizes the seamless welding molding of tensioning wheel.
The present invention is realized by the following technical programs：
A kind of combined type spinning tensioning wheel, it is characterised in that completely identical in structure upper spoke including split settings and
Lower spoke, the upper spoke include upper wheel rim end, upper former end and upper central plate end, the lower spokes include lower wheel rim end, under
Former end and lower central plate end, the upper former end and lower former end corresponding position are provided with convex algorithm, the upper former end
It is spot welded and is arranged by projection welding with lower former end, formed between the upper central plate end and lower central plate end for accommodating installation axle
The cavity groove held.
A kind of combined type spinning tensioning wheel, it is characterised in that the convex algorithm is divided into interior solder joint and outer solder joint, institute
State interior solder joint and outer solder joint be provided with it is multiple.
A kind of combined type spinning tensioning wheel, it is characterised in that the interior solder joint and outer solder joint are provided with 6, and
Each center of interior solder joint is on same annulus, and each center of outer solder joint is on same annulus.
A kind of combined type spinning tensioning wheel, it is characterised in that the upper former end and lower former end corresponding position
It is additionally provided with through-hole.
A kind of combined type spinning tensioning wheel, it is characterised in that the upper wheel rim end and lower wheel rim end are by wheel rim face
End and wheel rim elongated end composition, two wheel rim face ends keep same axial face and one end is mutually close to, and two wheel rim elongated ends are in expansion
Mouth structure.
The flow forming and molding process of a kind of combined type spinning tensioning wheel, it is characterised in that comprise the following steps that：
1）Blanking：Blanking die is installed on punching machine, the precut blanks of circular sheet shape are obtained after stainless-steel sheet is punched；
2）Punching：Punching die is installed on punching machine, is punched out central bore at precut blanks center；
3）Anti- side：Anti- side mode tool is installed on a hydraulic press, by one-step forming at the beginning of precut blanks outer edge part, marginal portion tentatively at
Type is the anti-side structure of circular arc, and the anti-side in centre is in 90 ° of straight flange structures, erects structure to be axial, obtains first-stage semi-finished product；
4）Belling solder joint：Corresponding convex algorithm is pressed on upper former end or lower former end by projection welder, convex algorithm is downwardly convex,
Concave surface obtains second level semi-finished product；
5）Two panels welding；Two panels second level semi-finished product, mirror symmetry arrangement are chosen, convex algorithm lower cam position sets relatively corresponding, completion 12
Point projection welding, obtains three-level semi-finished product；
6）Rotary press modelling：Each preforming spinning roller of self installation and molding spinning roller on spinning roller station are corresponded on spinning machine, pass through spinning
The main shaft of machine rotates, and drives the rotation of three-level semi-finished product, allow a preforming spinning roller working face from outside to inside with three-level semi-finished product
Wheel rim end carries out contact squeeze, and extruding process reaches threshold value A backed off after random, and wheel rim face end in formation obtains level-one spinning blank；It allows
The working face for forming spinning roller carries out contact squeeze with the wheel rim end of level-one spinning blank from outside to inside, and extruding process reaches threshold value A
Backed off after random forms the upper wheel rim elongated end of corresponding tilt face structure, obtains spinning semi-finished product；
7）Rush aperture：Small hole punching mold tool is installed on punching machine, spinning semi-finished product are punched to obtain four of the aperture with specified diameter
Grade semi-finished product；
8）Secondary counter side：On small hydraulic machine install secondary counter side mode tool, by level Four semi-finished product centre upper end or under
Hold anti-side in 90 ° of straight flange structures, secondary counter side face is to radially extend structure；
9）Last item is held：It is by small hydraulic machine, bearing is corresponding from the centre open end non-radial second anti-side Mian Chu, by axis
Pressure-bearing enters in cavity groove, obtains Pyatyi semi-finished product；
10）Anti- side three times：Anti- side mode tool three times is installed on small hydraulic machine, by Pyatyi semi-finished product centre upper end or under
End, i.e., do not carried out in step 8 secondary counter while other end it is anti-while be in 90 ° of straight flange structures, anti-side face is radially extends knot three times
Bearing in step 9 is wrapped in cavity groove by structure, obtains six grades of semi-finished product；
11）Spray painting：The processing of black electrophore tic paint is carried out to six grades of surface of semi-finished, obtains finished product.
A kind of flow forming and molding process of combined type spinning tensioning wheel, it is characterised in that step 4）Convex algorithm is 12 points
Arrangement.
Compared with prior art, the present invention there are following beneficial effects：
1）Using projection welding mode, together by two plate sheet weldings, bearing is welded using thick steel plate compared to more existing friction welding (FW)
The mode of seat, can effectively reduce production cost；
2）Product overall weight reduces, while welding sequence is more convenient effective, facilitates processing, is guaranteeing product service performance
Under the premise of, realize product lightweight production.
Detailed description of the invention
Fig. 1 is the overlooking structure diagram of product；
Fig. 2 is Figure 1A-A schematic cross-sectional view；
Fig. 3 is product processing structure chart；
In figure, the upper spoke of 1-, the upper wheel rim end 101-, the upper former end 102-, the upper central plate end 103-, spoke under 2-, 201- lower whorl
Rim end, former end under 202-, central plate end under 203-, 3- convex algorithm, solder joint in 301-, the outer solder joint of 302-, 4- cavity groove, 5- are logical
Hole, 6- wheel rim face end, 7- wheel rim elongated end.
Specific embodiment
The present invention is described in further details below in conjunction with Figure of description, and provides specific embodiment.
As shown in Figs. 1-2, a kind of combined type spinning tensioning wheel, completely identical in structure upper spoke including split settings and
Lower spoke, upper spoke include upper wheel rim end, upper former end and upper central plate end, lower spokes include lower wheel rim end, lower former end and
Lower central plate end, upper former end and lower former end corresponding position are provided with convex algorithm, and upper former end and lower former end pass through convex
Solder joint welding setting, forms the cavity groove for accommodating installation bearing between upper central plate end and lower central plate end.Wherein, projection welding
Point is divided into interior solder joint and outer solder joint, interior solder joint and outer solder joint be provided with it is multiple, preferably in solder joint and outer solder joint be provided with 6
It is a, and each center of interior solder joint, on same annulus, each center of outer solder joint is on same annulus.Upper former end and
Lower former end corresponding position is additionally provided with through-hole, and the through-hole is between interior solder joint and outer solder joint；Upper wheel rim end and lower wheel rim
End is made of wheel rim face end and wheel rim elongated end, and two wheel rim face ends keep same axial face and one end is mutually close to, two wheel rims
Elongated end is in expansion mouth structure.
As shown in figure 3, the flow forming and molding process of the combined type spinning tensioning wheel, comprises the following steps that：1）Blanking：?
Blanking die is installed on punching machine, prefabricated hair of the diameter L1 of circular sheet shape at 122 millimeters is obtained after stainless-steel sheet is punched
Base；2）Punching：Punching die is installed on punching machine, is punched out central bore of the diameter L2 at 22 millimeters at precut blanks center；
3）Anti- side：Anti- side mode tool is installed on a hydraulic press, one-step forming, marginal portion at the beginning of precut blanks outer edge part are tentatively shaped to
The anti-side structure of circular arc, the anti-side in centre are in 90 ° of straight flange structures, erect structure to be axial, obtain first-stage semi-finished product；Two straight flange knots
Horizontal distance L3 between structure is 40 millimeters, and the vertical height L4 of straight flange is 9 millimeters, and the height L5 of anti-side structure is 5 millimeters, instead
The radius L6 of side rounded corner be 15 millimeters, 4）Belling solder joint：It is pressed on upper former end or lower former end by projection welder corresponding
Convex algorithm, convex algorithm is downwardly convex, concave surface, obtains second level semi-finished product；5）Two panels welding；Two panels second level semi-finished product are chosen,
Mirror symmetry arrangement, convex algorithm lower cam position is set to be corresponded to relatively, is completed 12 projection weldings, is obtained three-level semi-finished product；6）It is spun into
Type：Each preforming spinning roller of self installation and molding spinning roller on spinning roller station are corresponded on spinning machine, are rotated by the main shaft of spinning machine,
The rotation of three-level semi-finished product is driven, the working face of a preforming spinning roller is allowed to be contacted from outside to inside with the wheel rim end of three-level semi-finished product
It squeezes, extruding process reaches threshold value A backed off after random, and wheel rim face end in formation obtains level-one spinning blank；Allow molding spinning roller work
Face carries out contact squeeze with the wheel rim end of level-one spinning blank from outside to inside, and extruding process reaches threshold value A backed off after random, is formed and is corresponded to
The upper wheel rim elongated end of inclined surface structure, obtains spinning semi-finished product；7）Rush aperture：Small hole punching mold tool is installed on punching machine, will be revolved
Pressure semi-finished product are punched to obtain the level Four semi-finished product with the specified diameter L7 aperture for being 7.92 ± 0.25 millimeters； 8）Secondary counter side：?
Secondary counter side mode tool is installed on small hydraulic machine, is in 90 ° of straight flange knots by the anti-side in level Four semi-finished product centre upper end or lower end
Structure, secondary counter side face are to radially extend structure, and the diameter of bore L8 that anti-side is formed is 33 millimeters；9）Last item is held：Pass through small-scale liquid
Bearing is corresponded to from the centre open end non-radial second anti-side Mian Chu, bearing is pressed into cavity groove, obtains Pyatyi by press
Semi-finished product；10）Anti- side three times：Anti- side mode tool three times is installed on small hydraulic machine, by Pyatyi semi-finished product centre upper end or
Person lower end, i.e., do not carried out in step 8 secondary counter while other end it is anti-while be in 90 ° of straight flange structures, anti-side face is radial prolongs three times
Structure is stretched, the bearing in step 9 is wrapped in cavity groove, obtains six grades of semi-finished product；11）Spray painting：To six grades of surface of semi-finished
The processing of black electrophore tic paint is carried out, finished product is obtained.
Claims (7)
1. a kind of combined type spinning tensioning wheel, it is characterised in that the completely identical in structure upper spoke including split settings（1）With
Lower spoke（2）, the upper spoke（1）Including upper wheel rim end（101）, upper former end（102）With upper central plate end（103）, described
Lower spokes（2）Including lower wheel rim end（201）, lower former end（202）With lower central plate end（203）, the upper former end（102）With
Lower former end（202）Corresponding position is provided with convex algorithm（3）, the upper former end（102）With lower former end（202）By convex
Solder joint（3）Welding setting, the upper central plate end（103）With lower central plate end（203）Between formed for accommodate installation bearing
Cavity groove（4）.
2. a kind of combined type spinning tensioning wheel as described in claim 1, it is characterised in that the convex algorithm（3）It is divided into interior solder joint
（301）With outer solder joint（302）, the interior solder joint（301）With outer solder joint（302）It is provided with multiple.
3. a kind of combined type spinning tensioning wheel as claimed in claim 2, it is characterised in that the interior solder joint（301）With outer solder joint
（302）It is provided with 6, and interior solder joint（301）Each center on same annulus, outer solder joint（302）Each central point
On same annulus.
4. a kind of combined type spinning tensioning wheel as described in claim 1, it is characterised in that the upper former end（102）With lower width
Plate end（202）Corresponding position is additionally provided with through-hole（5）.
5. a kind of combined type spinning tensioning wheel as described in claim 1, it is characterised in that the upper wheel rim end（101）And lower whorl
Rim end（201）By wheel rim face end（6）With wheel rim elongated end（7）Composition, two wheel rim face ends（6）Keep same axial face and one end
Mutually it is close to, two wheel rim elongated ends（7）In expansion mouth structure.
6. a kind of flow forming and molding process of combined type spinning tensioning wheel described in claim 1, it is characterised in that including following work
Skill step：
1）Blanking：Blanking die is installed on punching machine, the precut blanks of circular sheet shape are obtained after stainless-steel sheet is punched；
2）Punching：Punching die is installed on punching machine, is punched out central bore at precut blanks center；
3）Anti- side：Anti- side mode tool is installed on a hydraulic press, by one-step forming at the beginning of precut blanks outer edge part, marginal portion tentatively at
Type is the anti-side structure of circular arc, and the anti-side in centre is in 90 ° of straight flange structures, erects structure to be axial, obtains first-stage semi-finished product；
4）Belling solder joint：Corresponding convex algorithm is pressed on upper former end or lower former end by projection welder, convex algorithm is downwardly convex,
Concave surface obtains second level semi-finished product；
5）Two panels welding；Two panels second level semi-finished product, mirror symmetry arrangement are chosen, convex algorithm lower cam position sets relatively corresponding, completion 12
Point projection welding, obtains three-level semi-finished product；
6）Rotary press modelling：Each preforming spinning roller of self installation and molding spinning roller on spinning roller station are corresponded on spinning machine, pass through spinning
The main shaft of machine rotates, and drives the rotation of three-level semi-finished product, allow a preforming spinning roller working face from outside to inside with three-level semi-finished product
Wheel rim end carries out contact squeeze, and extruding process reaches threshold value A backed off after random, and wheel rim face end in formation obtains level-one spinning blank；It allows
The working face for forming spinning roller carries out contact squeeze with the wheel rim end of level-one spinning blank from outside to inside, and extruding process reaches threshold value A
Backed off after random forms the upper wheel rim elongated end of corresponding tilt face structure, obtains spinning semi-finished product；
7）Rush aperture：Small hole punching mold tool is installed on punching machine, spinning semi-finished product are punched to obtain four of the aperture with specified diameter
Grade semi-finished product；
8）Secondary counter side：On small hydraulic machine install secondary counter side mode tool, by level Four semi-finished product centre upper end or under
Hold anti-side in 90 ° of straight flange structures, secondary counter side face is to radially extend structure；
9）Last item is held：It is by small hydraulic machine, bearing is corresponding from the centre open end non-radial second anti-side Mian Chu, by axis
Pressure-bearing enters in cavity groove, obtains Pyatyi semi-finished product；
10）Anti- side three times：Anti- side mode tool three times is installed on small hydraulic machine, by Pyatyi semi-finished product centre upper end or under
End, i.e., do not carried out in step 8 secondary counter while other end it is anti-while be in 90 ° of straight flange structures, anti-side face is radially extends knot three times
Bearing in step 9 is wrapped in cavity groove by structure, obtains six grades of semi-finished product；
11）Spray painting：The processing of black electrophore tic paint is carried out to six grades of surface of semi-finished, obtains finished product.
7. a kind of flow forming and molding process of combined type spinning tensioning wheel as claimed in claim 6, it is characterised in that step 4）It is convex
Solder joint is 12 points of arrangements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810489214.8A CN108916333B (en) | 2018-05-21 | 2018-05-21 | Combined spinning tension pulley and spinning forming process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810489214.8A CN108916333B (en) | 2018-05-21 | 2018-05-21 | Combined spinning tension pulley and spinning forming process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108916333A true CN108916333A (en) | 2018-11-30 |
| CN108916333B CN108916333B (en) | 2024-03-12 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810489214.8A Active CN108916333B (en) | 2018-05-21 | 2018-05-21 | Combined spinning tension pulley and spinning forming process thereof |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289590A (en) * | 2022-01-17 | 2022-04-08 | 合肥晟泰克旋压科技有限公司 | Belt pulley machining method |
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| CN104196982A (en) * | 2014-08-21 | 2014-12-10 | 南通福乐达汽车配件有限公司 | Belt wheel special for output end of small engine |
| CN205136494U (en) * | 2015-11-13 | 2016-04-06 | 浙江东星汽车部件有限公司 | Integral spinning take -up pulley |
| CN206159386U (en) * | 2016-10-17 | 2017-05-10 | 浙江东星汽车部件有限公司 | Tight pulley rises in welding formula V belt |
| CN206159387U (en) * | 2016-10-17 | 2017-05-10 | 浙江东星汽车部件有限公司 | Welding formula flat belt tight pulley that rises |
| CN106425343A (en) * | 2016-11-23 | 2017-02-22 | 浙江东星汽车部件有限公司 | Welded tension pulley machining method |
| CN207213095U (en) * | 2017-09-25 | 2018-04-10 | 江苏正亚科技有限公司 | A kind of new structure multi-wedge belt pulley |
| CN208565454U (en) * | 2018-05-21 | 2019-03-01 | 浙江东星汽车部件有限公司 | A kind of combined type spinning tensioning wheel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289590A (en) * | 2022-01-17 | 2022-04-08 | 合肥晟泰克旋压科技有限公司 | Belt pulley machining method |
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