CN213350443U

CN213350443U - Cold stamping disc part and forming progressive die thereof

Info

Publication number: CN213350443U
Application number: CN202022128778.4U
Authority: CN
Inventors: 薛明浩
Original assignee: Shanghai Zhonghao Auto Parts Co ltd
Current assignee: Shanghai Zhonghao Auto Parts Co ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-06-04
Anticipated expiration: 2030-09-24

Abstract

The cold stamping disc part comprises a disc-shaped base disc and an extension ring coaxially and integrally fixed on one surface of the base disc, wherein a containing groove is formed in one surface of the base disc, which is far away from the extension ring, the bottom wall of the base disc, which is located in the containing groove, is provided with a through hole coaxial with the extension ring, the edge of an opening of the base disc, which is located in the containing groove, extends along the circumferential direction away from a central axis to form an annular edge, and at least two lug plates are integrally fixed on the annular edge; the shaping modulus of continuity is used for the hierarchical shaping to go out the drift of a set part, its characterized in that including the fixed template that sets up that the continuous multistation upgrades and the cooperation of template: including being used for the shaping tensile station mould and the plastic station mould of holding tank and be used for shaping to extend hole flanging station mould, hole flanging station mould and reaming station mould in advance of ring. This application has the effect that improves small-size thin wall dish class part production efficiency.

Description

Cold stamping disc part and forming progressive die thereof

Technical Field

The application relates to the field of automobile accessory parts, in particular to a cold stamping disc part and a forming progressive die thereof.

Background

Disc parts play an important role in automobile production. The general disc part is processed by a blank on a lathe, and the size precision and the surface quality of the part can meet the design requirements.

In view of the above-mentioned related technologies, the inventor believes that when the size of the disc-like part is small and the wall thickness is thin, a certain machining allowance must be left for a blank for machining the part, and after the blank is produced, the blank needs to be transferred to a lathe for machining and punching, which results in low production efficiency of the part.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that small-size thin-wall disc parts are manufactured in a turning mode and are low in production efficiency, the application provides a cold stamping disc part and a forming progressive die thereof.

In a first aspect, the present application provides a cold stamping disc part, which adopts the following technical scheme:

the utility model provides a cold stamping dish type part, includes discoid base plate and the coaxial integrative extension ring that is fixed in the base plate one side, and the base plate deviates from the one side indent that extends the ring and forms there is the holding tank, and the base plate is located the diapire of holding tank and offers and extends the coaxial through-hole of ring, and the base plate is located the uncovered edge of holding tank and keeps away from the central axis along circumference and extends and be formed with the ring limit, and an organic whole is fixed with two at least otic placodes on the ring limit.

By adopting the technical scheme, the disc parts are suitable for punch forming, the process of part transfer is reduced, and the production efficiency is improved. And the size precision of the part is high due to the adoption of punch forming.

Optionally, the diameter of the through hole is smaller than the inner diameter of the extension ring, and a fillet is circumferentially arranged at one end, close to the accommodating groove, of the side wall of the through hole.

Through adopting above-mentioned technical scheme, the through-hole diameter is less than the internal diameter that extends the ring for it is formed with the thickening position to extend ring and base plate junction, improves the joint strength of junction. The fillet that through-hole lateral wall circumference set up can reduce the stress tear possibility in the stamping process, improves product production quality.

Optionally, the basal disc is located holding tank diapire middle part indent and is formed with and moves back and give way the groove.

Through adopting above-mentioned technical scheme, the groove of letting back is located the homonymy with the holding tank, can handle through stamping forming, has saved the step of using car processing, improves production efficiency.

Optionally, the otic placode has four, and four otic placodes divide into two sets ofly and around the central symmetry of basal disc and distribute, and the breach that communicates the holding tank is seted up to the region that the surrounding edge lies in between one of them group of otic placode.

Through adopting above-mentioned technical scheme, keep firm when using after the installation of dish type part, the breach can be used for the threading in the use on the one hand, and on the other hand dish type part has certain cushioning effect in breach department when receiving external force.

In a second aspect, the present application provides a forming progressive die for cold stamping disc parts, which adopts the following technical scheme:

the utility model provides a shaping modulus of continuity of cold stamping dish class part, upgrades the template and is used for the drift of hierarchical shaping play dish class part with the template cooperation including the continuous multistation of fixed setting, including being used for the shaping the drawing station mould and the plastic station mould of holding tank and be used for shaping to extend hole flanging station mould, hole flanging station mould and the reaming station mould in advance of ring.

By adopting the technical scheme, the rectangular flaky raw material substrate is prevented from being placed on the template, and then the rectangular flaky raw material substrate is punched by the dies at all the stations in sequence, so that disc parts can be continuously produced, and the production efficiency is improved.

Optionally, the stretching station die comprises a stretching die plate, a stretching upper punch and a stretching lower punch, the stretching die plate is provided with a penetrating circular die hole, the end of the stretching upper punch extends into the die hole, the stamping end face of the stretching lower punch is a plane, the circumference of the stamping end face is provided with a fillet, and a die cavity for accommodating the base plate is formed between the stretching upper punch and the stretching lower punch; the shaping station die and the stretching station die are identical in structure.

Through adopting above-mentioned technical scheme, tensile lower punch and the cooperation of tensile upper punch can improve the size precision of product through the plastic after raw materials base plate punching press holding tank again.

Optionally, the hole pre-flanging station die comprises a hole pre-flanging die plate, a hole pre-flanging first punch and a hole pre-flanging second punch, the end face of the hole pre-flanging first punch is matched with the inner contour of the accommodating groove, a through hole for the hole pre-flanging second punch to pass through is formed in the middle of the hole pre-flanging first punch along the axis, the stamping end face of the hole pre-flanging second punch is a hemispherical face, and the diameter of a die hole of the hole pre-flanging die plate is larger than that of the through hole in the hole pre-flanging first punch.

Through adopting above-mentioned technical scheme, in the holding tank was supported to the first drift butt of hole flanging in advance, then hole flanging second drift continues the punching press and makes the base plate be located the holding tank diapire uplift in advance, then goes out through hole flanging second drift and forms the extension ring structure, for hole flanging operation preparation on next step, divide two steps of hole flanging and can reduce the tearing possibility in extension ring position, improve product quality.

Optionally, the structure of the hole flanging station die is the same as that of the pre-hole flanging station die, the hole flanging second punch is used for replacing the pre-hole flanging second punch, and the end face of the hole flanging second punch is a plane and can penetrate through a die hole of the pre-hole flanging die plate.

Through adopting above-mentioned technical scheme, the terminal surface of hole flanging second drift can extrude the extension to the structure of uplift for the plane for semicircular uplift structure becomes the tubular extension ring of circle.

Optionally, the reaming station die comprises a hole flanging die plate, a reaming lower punch and a reaming upper punch, the end face profile of the reaming lower punch is the same as the profile of the first hole flanging punch, the reaming upper punch is coaxially located above the reaming lower punch, one end, close to the hole flanging die plate, of the reaming upper punch is a truncated cone-shaped punching end, and the end, far away from the end face, of the punching end is a big end, and the profile diameter of the big end is smaller than the overall profile outer diameter of the reaming upper punch.

Through adopting above-mentioned technical scheme, reaming lower punch butt is in the holding tank, can carry out the reaming operation to the internal diameter when the punching press end of reaming upper punch stretched into the extension ring position, and the punching press end is the round platform form, is favorable to the drawing of patterns after the reaming.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a cold-stamped disk-like part according to an embodiment of the present application;

FIG. 2 is a front view of the disk type member of FIG. 1 in the direction A;

FIG. 3 is a schematic illustration of a cold-stamped disc part forming process according to an embodiment of the present application;

FIG. 4 is a schematic diagram of the substrate molding structure in steps S3 and S4 of FIG. 3;

FIG. 5 is a schematic diagram of the structure of the die punch in steps S3 and S4 of FIG. 4;

FIG. 6 is a schematic diagram of the substrate molding structure in steps S6-S9 of FIG. 3;

FIG. 7 is a schematic diagram of the structure of the die punch during the steps S6-S9 of FIG. 6;

fig. 8 is a schematic view of the process of punching and forming the notch and the annular edge in fig. 3.

Description of reference numerals: 1. a disc-like part; 11. a base plate; 12. an extension ring; 121. a buffer tank; 13. encircling; 131. a boss; 14. an ear plate; 141. mounting holes; 15. a notch; 16. accommodating grooves; 161. a receding groove; 2. a raw material substrate; 21. a separation hole; 22. a contour forming hole; 23. a component substrate; 24. connecting ribs; 25. flanging; 31. stretching the lower punch; 32. shaping a punch; 41. stretching the upper punch; 5. stretching the template; 51. a die hole; 6. hole flanging templates; 71. a pre-hole flanging first punch; 72. a pre-hole flanging second punch; 73. a first punch for hole flanging; 74. a second punch for hole flanging; 75. reaming the lower punch; 76. reaming an upper punch; 77. upsetting and extruding a first punch; 78. upsetting and extruding a second punch; 79. upsetting and extruding a third punch; 8. and (4) blanking the contour line of the die head on the circular edge.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

The embodiment of the application discloses a cold stamping disc part. Referring to fig. 1 and 2, the disc-like component includes a circular base disc 11, and a cylindrical receiving groove 16 is punched on one surface of the base disc 11 along a central axis toward one side; the base plate 11 is positioned in the middle of the bottom wall of the accommodating groove 16 and extends towards the direction away from the accommodating groove 16 to form an extending ring 12 integrally, two ends of the extending ring 12 are open, and the inner cavity is communicated with the accommodating groove 16; the base plate 11 is formed with a rim 13 extending circumferentially away from the central axis at the open end of the receiving groove 16.

Referring to fig. 1 and 2, four ear plates 14 are integrally provided on the annular rim 13, and a through mounting hole 141 is provided on each ear plate 14. The ear plates 14 extend away from the central axis of the base plate 11 and protrude out of the annular edge 13, and the four ear plates 14 are divided into two groups and are symmetrically arranged. The four ear plates 14 divide the annular edge 13 into four parts, a rectangular notch 15 is formed in the annular edge 13 between one group of the ear plates 14, and the notch 15 penetrates through the side wall of the accommodating groove 16. A boss 131 is formed on the ring edge 13 adjacent to the notch 15 and far away from the notch 15.

The basal disc 11 is provided with a yielding groove 161 at the middle part of the bottom wall of the accommodating groove 16, and the yielding groove 161 and the accommodating groove 16 are coaxially arranged and are provided with steps. An annular buffer groove 121 is provided in the circumferential direction on the inner wall of the extension ring 12 near one end of the base plate 11.

The through-hole has been seted up at holding tank 16's diapire center for communicate holding tank 16 and extend the ring 12 internal cavity. The inner diameter of the through hole is smaller than the inner diameter of the extension ring 12, and the side wall of the through hole is arranged close to one end of the accommodating groove 16 along a circumferential fillet.

The base plate 11 is arranged at the open end of the accommodating groove 16 along the circumferential fillet, and the bottom wall of the base plate 11 at the accommodating groove 16 is subjected to transition treatment along the circumferential fillet.

Referring to fig. 3, a forming process of a cold-stamped disc part is as follows: putting the raw material substrate 2 on a forming progressive die for punch forming, wherein the raw material substrate 2 with the wall thickness of 3mm sequentially comprises the following steps:

s1: punching: and punching a central hole and positioning holes on the raw material substrate 2, wherein the central hole is positioned on the central axis of the part to be processed, and the positioning holes are symmetrically distributed on the edges of the raw material substrate 2 at the two sides of the central hole.

S2: punching: a partition hole 21 and a contour forming hole 22 are punched around the center hole punched in step S1, the partition hole 21 and the contour forming hole 22 form the outer contour of the component substrate 23, and a connecting rib 24 is fixed between the component substrate 23 and the material substrate 2. The partition hole 21 and the outline forming hole 22 are processed in two steps to avoid stress tearing caused by excessive single blanking amount of the part substrate 23. S0: and (3) blank step: the raw material substrate 2 is not deformed at this position.

Referring to fig. 3 and 4, S3: stretching: the die punches a draw-out receiving groove 16 on the part substrate 23. S0: and (3) blank step: the raw material substrate 2 is not deformed at this position. S4: shaping: the die performs secondary stamping on the component substrate 23 to make the profile of the component substrate 23 meet the design requirement. S0: and (3) blank step: the raw material substrate 2 is not deformed at this position.

Referring to fig. 4 and 5, the die in step S3 includes a drawing die plate 5, a drawing upper punch 41, and a drawing lower punch 31, and the drawing die plate 5 is provided with a circular die hole 51 penetrating therethrough. The end of the drawing upper punch 41 projects into the die hole 51 at a distance from the lower end face of the die hole 51. The punching end face of the lower drawing punch 31 is a plane, and the circumference of the punching end face is provided with a fillet. The die in step S4 has the same overall structure as the die in step S3, except that the drawing lower punch 31 is replaced with a shaping punch 32, and the radius of the fillet at the end face of the shaping punch 32 is smaller than that of the end face of the drawing lower punch 31. The upper drawing punch 41 and the lower drawing punch 31 are respectively provided with a countersunk hole for passing a bolt along the axis.

S1: punching: the die punches a central hole of the part substrate 23, and the diameter of the punched hole is larger than that of the original central hole.

S5: and (3) pressing burrs: the die punches the part substrate 23 again so that the surface burr portion at the center hole is smooth.

Referring to fig. 3 and 6, S6: pre-hole flanging: the die punches the center of the part substrate 23 so that the material around the center hole bulges to form a hemispherical flange 25.

S7: hole flanging: the die punches the center of the part substrate 23 again so that the extension ring 12 of a circular tube shape is formed at the center hole.

S8: reaming: the die enlarges the inner diameter of the circular tube formed in step S7.

S9: upsetting and extruding: the die presses the component substrate 23 in the axial direction. The upsetting-extruding operation is performed three times in succession so that the material is compressed after being subjected to the stretching to improve the strength properties of the material.

Referring to fig. 6 and 7, the die in step S6 includes a hole flanging die plate 6, a first pre-flanging punch 71 and a second pre-flanging punch 72, an end surface of the first pre-flanging punch 71 is adapted to an inner contour of the accommodating groove 16, a through hole for the second pre-flanging punch 72 to pass through is formed in a middle portion of the first pre-flanging punch 71 along an axis, a punching end surface of the second pre-flanging punch 72 is a hemispherical surface, and a diameter of a die hole of the hole flanging die plate 6 is slightly larger than that of the through hole of the first pre-flanging punch 71.

The die in step S7 differs from that in step S6 in that the pre-burring first punch 71 is replaced with a burring first punch 73 and the pre-burring second punch 72 is replaced with a burring second punch 74. The contour of the first flanging punch 73 corresponds to the inner contour of the receiving groove 16, and the end face of the first flanging punch 73 is provided with a connecting fillet and chamfer in the circumferential direction. The middle part of the first hole flanging punch 73 is provided with a through hole which penetrates along the axis, and the second hole flanging punch 74 penetrates through the through hole and penetrates out of the die hole of the hole flanging die plate 6. The end face of the second flanging punch 74 is flat and the edge is provided with round corners along the circumferential direction.

The die in step S8 differs from that in step S7 in that the burring first punch 73 is replaced with a counterboring lower punch 75, and the burring second punch 74 is replaced with a counterboring upper punch 76. The lower reaming punch 75 has the same profile structure as the first flanging punch 73 but has a solid structure in the middle. The upper reaming punch 76 is coaxially located above the lower reaming punch 75, one end, close to the die hole, of the upper reaming punch 76 is a truncated cone-shaped punching end, one end, far away from the end face, of the punching end is a large end, and the outline diameter of the large end is smaller than the overall outline outer diameter of the upper reaming punch 76, so that a step is formed at the large end of the punching end. Thus, the circular truncated cone-shaped stamping end is beneficial to demoulding after hole expansion.

The die in step S9 differs from that in step S8 in that the counterboring lower punch 75 is replaced with an upsetting first punch 77, a through hole is provided in the middle of the upsetting first punch 77 and an upsetting second punch 78 is inserted into the through hole, and the counterboring upper punch 76 is replaced with an upsetting third punch 79. The end face of the upsetting first punch 77 protrudes by 1mm around the through hole so as to form a relief groove 161 after upsetting; the end face of the second upsetting punch 78 is a plane, the outer diameter of the stamping end of the second upsetting punch 78 is matched with the inner diameter of the extension ring 12, and the length of the stamping end of the second upsetting punch 78 is half of the axial length of the extension ring 12. The punch end of the third upsetting punch 79 has the same profile as the punch end of the second upsetting punch 78, and the punch end of the third upsetting punch 79 has a length of about half the axial length of the extension ring 12.

Referring to fig. 8, S2: punching: the die punches a notch circular hole in the contour edge of the component substrate 23.

S10: inward notching: the die punches a notch 15 inward in the component substrate 23. S0: and (6) performing idle running. S11: punching a notch outwards: the die punches a notch 15 outward in the component substrate 23. S0: and (6) performing idle running.

S2: punching: the die punches a ring edge 13 on the edge of the part substrate 23, the contour line 8 of the ring edge punching die head is enclosed into a rectangle, and the contour line on the cutting side is concave and arc-shaped.

S5: and (3) pressing burrs: the mold performs a flattening process on the raw edge at the position of the annular edge 13 of the component substrate 23. Then three times S0: after the idle step, step S12 is performed again: blanking and blanking to form a single disc part 1.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. In a cold stamping disc part which characterized in that: including discoid base plate (11) and coaxial integrative extension ring (12) of being fixed in base plate (11) one side, base plate (11) deviate from one side indent that extends ring (12) and form holding tank (16), base plate (11) lie in the diapire of holding tank (16) and offer and extend ring (12) coaxial through-hole, base plate (11) lie in holding tank (16) uncovered edge and keep away from the central axis along circumference and extend and be formed with surrounding (13), the integrative at least two otic placodes (14) that are fixed with on surrounding (13).

2. A cold-stamped disc like part according to claim 1, wherein: the diameter of the through hole is smaller than the inner diameter of the extension ring (12), and a round angle is arranged at one end, close to the accommodating groove (16), of the side wall of the through hole along the circumferential direction.

3. A cold-stamped disc like part according to claim 1, wherein: the basal disc (11) is positioned in the middle of the bottom wall of the accommodating groove (16) and is concavely provided with a yielding groove (161).

4. A cold-stamped disc like part according to claim 1, wherein: the earflap (14) have four, and four earflaps (14) divide into two sets ofly and surround base plate (11) central symmetry and distribute, and breach (15) of intercommunication holding tank (16) are seted up in the region that the lopsided (13) are located between one of them group earflap (14).

5. A progressive die for forming cold-stamped disc parts according to claim 1, comprising a die plate of continuous multi-station progressive type, fixedly arranged, and a punch cooperating with the die plate for forming the disc parts (1) in stages, characterized in that: the device comprises a stretching station die and a shaping station die for forming the accommodating groove (16), and a pre-hole flanging station die, a hole flanging station die and a hole expanding station die for forming the extension ring (12).

6. The progressive die for forming cold-stamped disc parts according to claim 5, wherein: the drawing station die comprises a drawing die plate (5), a drawing upper punch (41) and a drawing lower punch (31), wherein the drawing die plate (5) is provided with a penetrating circular die hole (51), the end part of the drawing upper punch (41) extends into the die hole (51), the punching end face of the drawing lower punch (31) is a plane, the circumference of the punching end face is provided with a fillet, and a die cavity for accommodating the base disc (11) is formed between the drawing upper punch (41) and the drawing lower punch (31); the shaping station die and the stretching station die are identical in structure.

7. The progressive die for forming cold-stamped disc parts according to claim 6, wherein: the hole pre-flanging station die comprises a hole pre-flanging die plate (6), a first pre-flanging punch (71) and a second pre-flanging punch (72), wherein the end face of the first pre-flanging punch (71) is matched with the inner contour of the accommodating groove (16), a through hole for the second pre-flanging punch (72) to penetrate through is formed in the middle of the first pre-flanging punch (71) along the axis, the punching end face of the second pre-flanging punch (72) is a hemispherical face, and the diameter of a die hole (51) of the hole pre-flanging die plate (6) is larger than that of the through hole in the first pre-flanging punch (71).

8. The progressive die for forming cold-stamped disc parts according to claim 7, wherein: the hole flanging station die is the same as the pre-hole flanging station die in structure, a hole flanging second punch (74) is used for replacing the pre-hole flanging second punch (72), and the end face of the hole flanging second punch (74) is a plane and can penetrate through a die hole (51) of the pre-hole flanging die plate (6).

9. The progressive die for forming cold-stamped disc parts according to claim 8, wherein: the reaming station die comprises a hole flanging die plate (6), a reaming lower punch (75) and a reaming upper punch (76), the end face profile of the reaming lower punch (75) is the same as the profile of the first hole flanging punch (73), the reaming upper punch (76) is coaxially located above the reaming lower punch (75), one end, close to the hole flanging die plate (6), of the reaming upper punch (76) is a truncated cone-shaped punching end, and the profile diameter of the end, far away from the end face, of the punching end is larger than the overall profile outer diameter of the reaming upper punch (76).