CN112024674A - Clutch hub double-roller composite die - Google Patents
Clutch hub double-roller composite die Download PDFInfo
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- CN112024674A CN112024674A CN202010995402.5A CN202010995402A CN112024674A CN 112024674 A CN112024674 A CN 112024674A CN 202010995402 A CN202010995402 A CN 202010995402A CN 112024674 A CN112024674 A CN 112024674A
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- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 33
- 230000008569 process Effects 0.000 claims abstract description 29
- 230000000712 assembly Effects 0.000 claims abstract description 14
- 238000000429 assembly Methods 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 65
- 239000010959 steel Substances 0.000 claims description 65
- 238000005096 rolling process Methods 0.000 claims description 6
- 230000003044 adaptive effect Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000009977 dual effect Effects 0.000 claims 1
- 238000000465 moulding Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003698 laser cutting Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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
- B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
- B21D17/04—Forming single grooves in sheet metal or tubular or hollow articles by rolling
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- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
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- 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
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- 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
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
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Abstract
The invention provides a double-roller composite die for a clutch hub, which is used for a tooth profile forming procedure of a tooth-shaped clutch hub; a plurality of matched tooth-shaped forming grooves are correspondingly formed on the outer peripheral wall of the workpiece supporting table on the lower die base according to the positions of the tooth-shaped grooves of the inner hub piece; the upper die base, the upper die base plate and the fixed plate are fixedly connected, the roller assemblies are fixedly clamped between the upper die base plate and the fixed plate through a pair of roller clamping plates, upper rollers and lower rollers which are arranged between the pair of roller clamping plates at intervals are suspended below the fixed plate, a workpiece to be processed is sleeved on a workpiece supporting table during die assembly, and a plurality of groups of roller assemblies depend on the lower rollers and the upper rollers to sequentially move downwards on the outer side of the workpiece through the peripheral surface of the outer roller and roll the outer roller at the tooth-shaped groove forming position to be matched with each tooth-shaped forming groove of the lower die to complete; a pair of guide sleeve assemblies of the upper die holder is matched with a pair of guide posts of the lower die holder to provide guidance and support for die assembly. The invention simplifies the molding process, reduces the cost and ensures the processing precision.
Description
Technical Field
The invention relates to the field of dies, in particular to a clutch hub double-roller composite die.
Background
With the increase of the number of automobiles in China, traffic jam becomes more and more serious, the complex traffic environment makes the manual car stopping type driving experience worse, and the automatic stopping requirement is promoted year by year. In the existing automatic transmission, a tooth-shaped clutch hub is used for transmitting power (mainly a hydraulic automatic transmission and a double-clutch automatic transmission) in order to save space and reduce weight, the shape is complex, the size is precise, and the tooth-shaped clutch hub is one of the most difficult parts in the manufacture of a gearbox.
The early clutch is formed mainly by casting, cutting and other traditional machining methods, and has low material utilization rate, long machining time and high overall manufacturing cost. With the development of automobiles with light weight, high strength and low cost, various automobile companies at home and abroad try to manufacture clutch hubs in a metal plate volume forming mode in recent years so as to improve the material utilization rate, shorten the production time and reduce the production cost. The forming process is mainly divided into four parts:
the first step is blanking, the size of a blank is determined according to the size of a final part, the blank is generally a round blank, the blanking process mainly adopts stamping or laser cutting, the process is simple, and the blanking process is the most common process in plate processing;
the second step is deep drawing, the deep drawing process determines whether the blank pressing is needed according to the size of the deep drawing ratio, the size of the blank pressing force can be obtained through computer simulation or an empirical formula, and the proper blank pressing force is an important factor for ensuring the deep drawing quality;
the third step is tooth profile forming, the process is a tooth profile clutch hub forming process, and the proper tooth profile forming process can improve the precision of parts, improve the strength and reduce the subsequent shaping process;
the fourth step is the precise shaping of the tooth shape, and the process ensures the final forming dimensional precision of the tooth-shaped clutch hub and meets the product performance requirement;
and fifthly, punching, wherein kidney-shaped through holes are distributed on the tooth profile, and the kidney-shaped through holes are generally processed by special punching equipment or can be punched by laser cutting.
The existing common tooth profile forming processes comprise rolling, spinning, stamping and the like, a special die and special equipment are often required to be designed, and the manufacturing cost is high, so that the key for ensuring high-quality and low-cost clutch hub parts is to select a proper processing process to carry out tooth profile forming.
Disclosure of Invention
The present invention aims to solve the above technical problem at least to some extent. Therefore, the invention provides a double-roller composite die for a clutch hub aiming at a third step of a tooth profile forming process in a tooth profile clutch hub forming process, replaces the traditional two procedures of tooth profile forming and tooth profile precise shaping, simplifies the forming procedure, reduces the equipment investment and secondary processing positioning errors, and is beneficial to ensuring the precision.
In order to achieve the purpose, the invention adopts the following technical scheme:
a double-roller composite die for a clutch hub is used for processing a tooth-shaped clutch hub, a plurality of tooth-shaped grooves are formed in the side wall of the tooth-shaped clutch hub and circumferentially and uniformly distributed at intervals around a central axis, the tooth-shaped grooves are inwards concave along the radial direction and are communicated along the axial direction, and the double-roller composite die is characterized in that:
the double-roller composite die is used for a tooth profile forming process of the clutch hub, and a workpiece to be processed is a hollow part with an opening of an inner hub part of the tooth profile clutch hub formed after blanking and deep drawing processes and consists of a lower die and an upper die;
the lower die comprises a lower die base, a workpiece supporting table arranged on the upper end surface of the lower die base and a pair of guide posts respectively arranged on the upper end surface of the lower die base and facing the angular line, the overall dimension of the workpiece supporting table is adapted to the overall dimension of an inner cavity of a workpiece to be processed, a plurality of tooth-shaped forming grooves which are inwards concave along the radial direction and have the overall dimension adapted to each tooth-shaped groove are formed on the outer peripheral wall in a one-to-one correspondence mode according to the forming positions of each tooth-shaped groove of the workpiece to be processed, the workpiece to be processed can be sleeved on the workpiece supporting table with an opening facing downwards, and the pair;
the upper die comprises an upper die base, an upper die base plate, a fixing plate, a plurality of groups of roller assemblies and a pair of vertically arranged guide sleeve assemblies; the upper die base, the upper die base plate and the fixed plate are sequentially stacked from top to bottom and are fixedly connected; the roller components are fixedly clamped between the upper die base plate and the fixed plate through a pair of roller clamping plates, upper rollers and lower rollers which are arranged between the pair of roller clamping plates at intervals up and down and can respectively rotate around the central axis of the corresponding wheel body are suspended below the fixed plate, a plurality of groups of roller components are distributed along the circumferential direction according to the positions of the tooth-shaped forming grooves on the lower die workpiece supporting table, when the upper die and the lower die are closed, the lower rollers and the upper rollers are sequentially rolled on the outer side of the workpiece to be processed from top to bottom on the outer side of the outer wheel circumferential surface from top to bottom and are matched with the tooth-shaped forming grooves on the lower die workpiece supporting table at the corresponding positions to form the tooth-shaped grooves on the workpiece to be processed, and the radius of the upper rollers is larger than that of the lower rollers and is; the pair of guide sleeve assemblies is vertically opposite to the pair of guide posts and is respectively arranged at the diagonal positions of the lower end surface of the upper die base, the ball guide sleeve of the guide sleeve component is fixedly arranged on the lower end surface of the upper die, the lower end of the ball guide sleeve is provided with an opening, a steel ball sleeve which is embedded with a plurality of movable steel balls on the peripheral wall and is vertically communicated is sleeved in the inner cavity, the lower end part of the steel ball sleeve is exposed out of the ball guide sleeve, the distance is reserved between the top end of the steel ball sleeve and the top wall of the inner cavity of the ball guide sleeve in the vertical direction, the shape and the size of the inner cavity are matched with those of the guide post, the guide sleeve component and the guide post are matched to form a guide and support structure when the upper die and the lower die are closed, the guide post is inserted into the steel ball sleeve, the steel ball sleeve is pushed to move upwards by the friction force between the steel ball and the outer wall of the guide post and the side wall of the inner cavity of the ball guide sleeve, when the closing of the dies is completed, a gap is reserved between the top end of the steel ball sleeve and the top wall of the inner cavity of the ball guide sleeve, and an interval is vertically reserved between the whole upper die and a workpiece to be processed.
The invention also has the structural characteristics that:
the radius of the upper roller is 0.1mm larger than that of the lower roller.
The steel ball sleeve is characterized in that a plurality of rows of steel ball hole groups are axially arranged on the circumferential wall of the steel ball sleeve, the steel ball hole groups are circumferentially and uniformly distributed at intervals, each row of steel ball hole group is composed of a plurality of steel ball holes which are axially distributed at equal intervals, the steel ball is embedded in each steel ball hole, the outer side of the steel ball is exposed and contacted with the side wall of the inner cavity of the ball guide sleeve, the inner side of the steel ball is exposed in the inner cavity of the steel ball sleeve, and the steel ball can be tightly contacted with the outer wall of a guide pillar inserted into the inner cavity.
When the die assembly is completed, the gap value reserved between the top end of the steel ball sleeve and the top wall of the inner cavity of the ball guide sleeve is smaller than the vertical distance value reserved between the whole upper die and the workpiece to be processed.
The structure of the roller component is as follows:
the pair of roller clamping plates are opposite, the gap between the roller clamping plates is adaptive to the thickness of a roller body, the upper roller and the lower roller are assembled between the pair of roller clamping plates at the same structural form at intervals from top to bottom and are coaxially sleeved on the corresponding roller shafts, the roller shafts are supported in shaft holes of the pair of roller clamping plates through bearing bushes at two shaft ends and can rotate around the central axis of the roller shafts between the pair of roller clamping plates under the action of external force, the roller clamping plates are of an L-shaped structure, short plate sections of the pair of roller clamping plates are arranged upwards and reversely, and the short plate sections form an installation end part assembled with the upper die base plate together.
The upper die base plate is of a circular plate-shaped structure, the fixing plate is of an annular plate-shaped structure, the fixing plate and the upper die base plate are coaxially stacked and assembled on the lower end face of the upper die base and are fastened with the upper die base through bolts, corresponding bolt holes are respectively formed in the fastening positions of the bolts, positioning is carried out by means of positioning pins during assembly, and corresponding positioning holes are respectively formed in the positioning positions of the positioning pins;
and at the assembling position of the roller component, a rectangular groove is formed in the upper die base plate, a mounting hole is formed in the fixing plate, the upper ends of a pair of roller clamping plates of the roller component are embedded in the rectangular groove in a matching manner, the plate body penetrates through the mounting hole and is respectively abutted against the wall of the side hole, and the upper roller and the lower roller are suspended below the fixing plate.
The mounting hole is "protruding" style of calligraphy structure, and the tip is radially outwards along the fixed plate, and the tip is along forming the opening radially inwards and in the fixed plate, and the whole outline width of big end hole width adaptation in a pair of gyro wheel grip block of wheel components, tip hole width and gyro wheel thickness looks adaptation can hold single gyro wheel and pass, and a pair of gyro wheel grip block supports respectively tightly in the both sides pore wall of mounting hole tip.
Compared with the prior art, the invention has the beneficial effects that:
the invention utilizes the cooperation of the upper roller and the lower roller of the upper die roller component and the tooth-shaped forming groove on the lower die workpiece supporting table, and respectively acts on the outer side and the inner side of the forming position of each tooth-shaped groove of the workpiece to be processed during die assembly to complete the tooth-shaped forming process. The die has the advantages of long service life, high production efficiency, high product reliability and simple installation and debugging of the roller, can finish the processing of the inner hub piece of the tooth-shaped clutch hub, and can be expanded and applied to the traditional processing technology of the outer hub piece.
Drawings
FIG. 1 is a schematic view of a structure of a workpiece to be machined;
FIG. 2 is a schematic structural diagram of a workpiece obtained after the tooth forming process is completed by the present mold;
FIG. 3 is an exploded view of the upper die;
FIG. 4 is a schematic view of the structure of FIG. 3 from another perspective;
FIG. 5 is an exploded schematic view of the roller assembly (only the lower roller is shown);
FIG. 6 is an exploded view of the guide sleeve assembly;
FIG. 7 is a schematic view of the construction of the die pad;
FIG. 8 is a schematic view of the structure of the fixing plate;
FIG. 9 is an exploded view of the lower die;
FIG. 10 is a schematic view of a structure in which a workpiece to be processed is placed on a lower die workpiece support table;
fig. 11 is a schematic view of the structure of the mold of the present invention when it is clamped.
In the figure, 1 a lower die holder; 2, a workpiece supporting table; 3, a tooth-shaped forming groove; 4, guide pillars; 5, an upper die holder; 6, molding the die base plate; 7, a rectangular groove; 8, fixing a plate; 9 mounting holes; 10, bolts; 11 bolt holes; 12 cylindrical pins; 13 diamond-shaped pins; 14, positioning holes; 15 a roller assembly; 16 roller clamping plates; 17 shaft holes; 18, an upper roller; 19 a lower roller; 20 roller shafts; 21 flanging the bearing bush; 22 a ball guide sleeve; 23, steel ball sleeves; 24 steel balls; 25, a workpiece to be processed; 26 tooth-shaped grooves.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 11, the composite die for a clutch hub and a double-roller of the clutch hub of the present embodiment is used for processing a tooth-shaped clutch hub, wherein a plurality of tooth-shaped grooves 26 are formed in a side wall of the tooth-shaped clutch hub and are circumferentially and uniformly distributed around a central axis, and the tooth-shaped grooves 26 are radially recessed and axially run through, and is characterized in that:
the double-roller composite die is used for a tooth profile forming process of a clutch hub, and a workpiece 25 to be processed is a hollow part (shown in figure 1) of an opening of an inner hub part of the tooth profile clutch hub formed after blanking and deep drawing processes and consists of a lower die and an upper die;
the lower die comprises a lower die seat 1, a workpiece supporting table 2 arranged on the upper end surface of the lower die seat 1 and a pair of guide posts 4 respectively arranged on the upper end surface of the lower die seat 1 and facing the angular line, the overall dimension of the workpiece supporting table 2 is adapted to the overall dimension of the inner cavity of a workpiece 25 to be processed, a plurality of tooth-shaped forming grooves 3 which are inwards concave along the radial direction and are adapted to the overall dimension of each tooth-shaped groove 26 are formed on the outer peripheral wall in a one-to-one correspondence mode according to the forming positions of each tooth-shaped groove 26 of the workpiece 25 to be processed, the workpiece 25 to be processed can be sleeved on the workpiece supporting table 2 with an opening facing downwards, and;
the upper die comprises an upper die base 5, an upper die base plate 6, a fixed plate 8, a plurality of groups of roller assemblies 15 and a pair of vertically arranged guide sleeve assemblies; the upper die base 5, the upper die base plate 6 and the fixed plate 8 are sequentially stacked from top to bottom and are fixedly connected; the roller components 15 are fixedly clamped between the upper die base plate 6 and the fixed plate 8 through a pair of roller clamping plates 16, upper rollers 18 and lower rollers 19 which are arranged between the pair of roller clamping plates 16 at intervals up and down and can respectively rotate around the central axis of the corresponding wheel body are suspended below the fixed plate 8, a plurality of groups of roller components 15 are distributed along the circumferential direction corresponding to the positions of the tooth-shaped forming grooves 3 on the lower die workpiece supporting table 2, when the upper die is closed downwards and the lower die is closed, the outer sides of the workpieces 25 to be processed are sequentially rolled on the tooth-shaped groove 26 forming positions from top to bottom by the outer wheel circumferential surfaces of the lower rollers 19 and the upper rollers 18 from the top to the bottom and are matched with the tooth-shaped forming grooves 3 on the corresponding positions on the lower die workpiece supporting table 2 to form the tooth-shaped grooves 26 on the workpieces 25 to be processed, and the radius of the upper rollers 18 is; the pair of guide sleeve components are vertically opposite to the pair of guide posts 4 and are respectively arranged at the diagonal positions of the lower end surface of the upper die base 5, a ball guide sleeve 22 of the guide sleeve component is fixedly arranged at the lower end surface of the upper die, the lower end of the guide sleeve component is provided with an opening, a steel ball sleeve 23 which is embedded with a plurality of movable steel balls 24 in a surrounding wall and is vertically through is sleeved in the inner cavity, the lower end part of the steel ball sleeve 23 is exposed out of the ball guide sleeve 22, the distance is vertically reserved between the top end of the steel ball sleeve, the guide sleeve component is matched with the guide post 4 to form a guide and support structure when the upper die and the lower die are closed, the guide post 4 is inserted into the steel ball sleeve 23, the steel ball 24 pushes the steel ball sleeve 23 to move upwards by means of the friction force between the outer wall of the guide post 4 and the side wall of the inner cavity of the ball guide sleeve 22, when the closing of the dies is completed, a gap is reserved between the top end of the steel ball sleeve 23 and the top wall of the inner cavity of the ball guide sleeve 22, and a space is vertically reserved between the whole upper die and a workpiece 25 to be processed.
In specific implementation, the corresponding structural arrangement also includes:
the radius of the upper roller 18 is 0.1mm larger than that of the lower roller 19.
The peripheral wall of the steel ball sleeve 23 is provided with a plurality of rows of steel ball 24 hole groups which are distributed along the axial direction, the plurality of rows of steel ball 24 hole groups are uniformly distributed at intervals along the circumferential direction, each row of steel ball 24 hole group consists of a plurality of steel ball 24 holes which are distributed along the axial direction at equal intervals, a steel ball 24 is embedded in each steel ball 24 hole, the outer side of each steel ball 24 is exposed and contacted with the side wall of the inner cavity of the ball guide sleeve 22, and the inner side of each steel ball 24 is exposed in the inner cavity of the steel ball sleeve 23 and can be tightly contacted with the outer wall of the. The guide post 4 and the guide sleeve component are matched to accurately guide and stabilize the linear motion of the upper die during die assembly, and meanwhile, the upper die is supported to a certain extent, so that the upper die is prevented from being damaged by excessive downward movement of the upper die or a workpiece. The steel balls 24 on the steel ball sleeve 23 enable the steel ball sleeve 23 to be in rolling contact with the ball guide sleeve 22 and the guide post 4 when being pushed to move upwards, so that direct friction is avoided, and lubricating grease needs to be added when the device is used.
When the die assembly is completed, the clearance value left between the top end of the steel ball sleeve 23 and the top wall of the inner cavity of the ball guide sleeve 22 is smaller than the vertical distance value left between the whole upper die and the workpiece 25 to be processed. When the die assembly is completed, a gap is reserved between the top end of the steel ball sleeve 23 and the top wall of the inner cavity of the ball guide sleeve 22, the gap can be used as a buffer gap when the upper die moves downwards excessively, and when the guide pillar 4 is tightly pressed against the guide sleeve assembly, the limit for the excessive downward movement of the upper die is realized.
The roller assembly 15 is structured as follows:
the pair of roller clamping plates 16 are opposite, the gap between the roller clamping plates is adaptive to the thickness of a roller body, the upper roller 18 and the lower roller 19 are assembled between the pair of roller clamping plates 16 at intervals in an up-down mode in the same structural form and are coaxially sleeved on the corresponding roller shaft 20, the roller shaft 20 is supported in shaft holes 17 of the pair of roller clamping plates 16 through flanging bearing bushes 21 at two shaft ends, the roller clamping plates 16 can rotate around the central axis of the roller shaft 20 between the pair of roller clamping plates 16 under the action of external force, the roller clamping plates 16 are in an L-shaped structure, short plate sections of the pair of roller clamping plates 16 are upward and reversely arranged, and the short plate sections of the pair of roller clamping plates 16 form installation end parts assembled with the upper die; the outer peripheral surfaces of the upper roller 18 and the lower roller 19 are formed to have outer dimensions corresponding to those of the tooth-shaped grooves 26.
The upper die base plate 6 is of a circular plate-shaped structure, the fixing plate 8 is of an annular plate-shaped structure, the upper die base plate and the fixing plate are coaxially stacked and assembled on the lower end face of the upper die base 5 and are fastened with the upper die base 5 through bolts 10 (six bolts are uniformly distributed along the circumferential direction in the embodiment), corresponding bolt holes 11 are respectively formed in fastening positions of the bolts 10, positioning is carried out by means of positioning pins during assembly, and corresponding positioning holes 14 are respectively formed in the positioning positions of the positioning pins; in the embodiment, the positioning pin adopts the cylindrical pin 12 and the diamond pin 13 for positioning;
at the assembling position with the roller assembly 15, a rectangular groove 7 is formed in the upper die base plate 6, the groove depth is matched with the plate thickness of the short plate section of the roller clamping plate 16, and the groove width and the groove length are matched with the overall dimension of the installing end parts of the pair of roller clamping plates 16; the fixing plate 8 is provided with a mounting hole 9, the upper ends of a pair of roller clamping plates 16 of the roller assembly 15 are fittingly embedded in the rectangular groove 7, the plate body passes through the mounting hole 9 and is respectively abutted against the wall of the side hole, and the upper roller 18 and the lower roller 19 are suspended below the fixing plate 8.
The mounting hole 9 is a convex structure, the small end faces outwards along the radial direction of the fixing plate 8, the large end faces inwards along the radial direction and forms an opening in the fixing plate 8, the width of the large end hole is adapted to the overall outline width of a pair of roller clamping plates 16 of the roller assembly 15, the width of the small end hole is adapted to the thickness of the roller, a single roller can be accommodated to pass through, and the pair of roller clamping plates 16 are respectively abutted to the hole walls on the two sides of the large end of the mounting hole 9.
The clutch hub double-roller composite die of the embodiment can be installed on a hydraulic machine, the lower die is installed on a working table of the hydraulic machine as a fixed component, and the upper die is driven by the hydraulic machine to vertically displace.
In the tooth profile forming process, a workpiece 25 to be processed is first placed on the workpiece support table 2 of the lower die holder 1. The upper die moves downwards under the driving of the hydraulic machine, in the downward movement process, the lower rollers 19 of the roller assemblies 15 firstly contact the forming positions of the tooth-shaped grooves 26 of the workpieces 25 to be processed, the tooth-shaped grooves 26 of the workpieces 25 to be processed are rolled for the first time by the lower rollers 19, a plurality of groups of roller assemblies 15 simultaneously act on the workpieces 25 to be processed during rolling, the movement of the workpieces 25 to be processed in the horizontal direction is limited, meanwhile, the guide sleeve assemblies of the upper die base 5 are matched with the guide pillars 4 of the lower die base 1 to play a role in accurate guiding, the stability of linear motion of the upper die is favorably ensured, the relative offset of the upper die and the lower die is prevented, and the forming precision of the;
and when the upper die continues to move downwards, the upper roller 18 of the roller assembly 15 contacts the forming position of the tooth-shaped groove 26 of the workpiece 25 to be processed until the die is completely closed, and the upper roller 18 finishes secondary rolling on the tooth-shaped groove 26 of the workpiece 25 to be processed, so that the tooth-shaped groove 26 matched with the tooth-shaped forming groove 3 on the workpiece support platform 2 is formed on the workpiece 25 to be processed. Wherein, the radius of the upper roller 18 is set to be 0.1mm larger than that of the lower roller 19 for ensuring the size of the finished product. After the tooth profile is formed, the upper die is moved upwards, and the formed workpiece is taken out (as shown in fig. 2), so that all the processes are completed. The roller assembly 15 is clamped and fixed by the upper die base plate 6 and the fixing plate 8, and radial pressure can be offset in the forming process to stabilize the forming process. The die completes the tooth profile forming process at one time by applying the rolling technology to stamping.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. The utility model provides a compound mould of clutch hub double-roller for processing profile of tooth clutch hub, the profile of tooth clutch hub is formed with a plurality of tooth form grooves (26) that are the interval equipartition in circumference around the axis in the lateral wall, tooth form groove (26) are along the radial indent, link up along the axial, characterized by:
the double-roller composite die is used for a tooth profile forming process of the clutch hub, and a workpiece (25) to be processed is a hollow part with an opening of an inner hub part of the tooth profile clutch hub formed after blanking and deep drawing processes and consists of a lower die and an upper die;
the lower die comprises a lower die base (1), a workpiece supporting table (2) arranged on the upper end face of the lower die base (1) and a pair of guide posts (4) respectively arranged on the upper end face of the lower die base (1) and at the position facing the angular line, the overall dimension of the workpiece supporting table (2) is adapted to the overall dimension of the inner cavity of a workpiece (25) to be processed, a plurality of tooth-shaped forming grooves (3) which are inwards concave along the radial direction and are adapted to the overall dimension of each tooth-shaped groove (26) are correspondingly formed on the outer peripheral wall of the lower die according to the forming position of each tooth-shaped groove (26) of the workpiece (25) to be processed one by one, the workpiece (25) to be processed can be sleeved on the workpiece supporting table (2) with an opening facing downwards, and the pair of;
the upper die comprises an upper die base (5), an upper die base plate (6), a fixed plate (8), a plurality of groups of roller assemblies (15) and a pair of vertically arranged guide sleeve assemblies; the upper die base (5), the upper die base plate (6) and the fixed plate (8) are sequentially stacked from top to bottom and are fixedly connected; the roller components (15) are fixedly clamped between the upper die base plate (6) and the fixed plate (8) through a pair of roller clamping plates (16), upper rollers (18) and lower rollers (19) which are arranged between the pair of roller clamping plates (16) at intervals up and down and can respectively rotate around the central axis of the corresponding wheel body are suspended below the fixed plate (8), a plurality of groups of roller components (15) are distributed along the circumferential direction according to the positions of the tooth-shaped forming grooves (3) on the lower die workpiece supporting platform (2), when the upper die and the lower die are closed, the tooth-shaped grooves (26) on the workpiece (25) to be processed are formed by sequentially rolling the outer circumferential surfaces of the lower rollers (19) and the upper rollers (18) on the outer side of the workpiece (25) to be processed from top to bottom through the cooperation of the tooth-shaped forming grooves (3) at the corresponding positions on the lower die workpiece supporting platform (2), the radius of the upper roller (18) is larger than that of the lower roller (19) and is used for forming the finished size of the tooth-shaped groove (26); the pair of guide sleeve components are vertically opposite to the pair of guide columns (4) and are respectively arranged at the diagonal positions of the lower end surface of the upper die base (5), a ball guide sleeve (22) of the guide sleeve components is fixedly arranged at the lower end surface of the upper die, the lower end of the ball guide sleeve is open, a steel ball sleeve (23) which is vertically penetrated and is provided with a plurality of movable steel balls (24) embedded in the peripheral wall is sleeved in the inner cavity, the lower end part of the steel ball sleeve (23) is exposed out of the ball guide sleeve (22), the vertical distance is reserved between the top end of the steel ball guide sleeve and the top wall of the inner cavity of the ball guide sleeve (22), the shape and the size of the inner cavity are adaptive to the guide columns (4), the guide sleeve components and the guide columns (4) are matched to form a guide and support structure when the upper die and the lower die are closed, the guide columns (4) are inserted into the steel ball, a gap is reserved between the top end of the steel ball sleeve (23) and the top wall of the inner cavity of the ball guide sleeve (22), and a space is vertically reserved between the whole upper die and a workpiece (25) to be processed.
2. The clutch hub double-roller composite die as claimed in claim 1, wherein: the radius of the upper roller (18) is 0.1mm larger than that of the lower roller (19).
3. The clutch hub double-roller composite die as claimed in claim 1, wherein:
the steel ball sleeve (23) is characterized in that a plurality of rows of steel ball (24) hole groups are axially arranged on the circumferential wall of the steel ball sleeve (23), the steel ball (24) hole groups are circumferentially and uniformly distributed at intervals, each row of steel ball (24) hole group consists of a plurality of steel ball (24) holes which are axially distributed at equal intervals, the steel ball (24) is embedded in each steel ball (24) hole, the outer side of each steel ball (24) is exposed and contacted with the side wall of the inner cavity of the ball guide sleeve (22), and the inner side of each steel ball (24) is exposed in the inner cavity of the steel ball sleeve (23), so that the steel ball sleeve can be tightly contacted with the outer wall of a guide post (4).
4. The clutch hub double-roller composite die as claimed in claim 1 or 3, wherein: when the die assembly is completed, the gap value reserved between the top end of the steel ball sleeve (23) and the top wall of the inner cavity of the ball guide sleeve (22) is smaller than the vertical spacing value reserved between the whole upper die and the workpiece (25) to be processed.
5. The clutch hub dual roller composite mold of claim 1, wherein the roller assembly (15) is configured to:
the pair of roller clamping plates (16) are opposite, the gap between the pair of roller clamping plates is adaptive to the thickness of the roller body, the upper roller (18) and the lower roller (19) are assembled between the pair of roller clamping plates (16) at intervals up and down in the same structural form and are coaxially sleeved on the corresponding roller shafts (20), the roller shafts (20) are supported in shaft holes (17) of the pair of roller clamping plates (16) through bearing bushes at two shaft ends and can rotate around the central axis of the roller shafts (20) between the pair of roller clamping plates (16) under the action of external force, the roller clamping plates (16) are in an L-shaped structure, short plate sections of the pair of roller clamping plates (16) are arranged upwards and reversely, and the short plate sections and the upper die base plate (6) are assembled together.
6. The clutch hub double-roller composite die as claimed in claim 1 or 5, wherein:
the upper die base plate (6) is of a circular plate-shaped structure, the fixing plate (8) is of an annular plate-shaped structure, the fixing plate and the upper die base plate are coaxially stacked and assembled on the lower end face of the upper die base (5) and are fastened with the upper die base (5) through bolts (11), corresponding bolt holes (12) are respectively formed in the fastening positions of the bolts (11), positioning is carried out by means of positioning pins during assembly, and corresponding positioning holes (14) are respectively formed in the positioning positions of the positioning pins;
at the assembling position of the roller assembly (15), a rectangular groove (7) is formed in the upper die base plate (6), a mounting hole (9) is formed in the fixing plate (8), the upper ends of a pair of roller clamping plates (16) of the roller assembly (15) are embedded in the rectangular groove (7) in a matching mode, the plate body penetrates through the mounting hole (9) and is respectively abutted against the wall of the side hole, and the upper roller (18) and the lower roller (19) are suspended below the fixing plate (8).
7. The clutch hub double-roller composite die as claimed in claim 6, wherein: the mounting hole (9) is of a convex structure, the small end faces outwards along the radial direction of the fixing plate (8), the large end faces inwards along the radial direction and forms an opening in the fixing plate (8), the width of the large end hole is matched with the overall outline width of a pair of roller clamping plates (16) of the roller assemblies (15), the width of the small end hole is matched with the thickness of the roller, a single roller can be accommodated to penetrate through the small end hole, and the pair of roller clamping plates (16) are respectively abutted to the hole walls of the two sides of the large end of the mounting hole (9).
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