CN215508811U - Cold-heading mould is used in eccentric shaft production - Google Patents
Cold-heading mould is used in eccentric shaft production Download PDFInfo
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- CN215508811U CN215508811U CN202121518677.6U CN202121518677U CN215508811U CN 215508811 U CN215508811 U CN 215508811U CN 202121518677 U CN202121518677 U CN 202121518677U CN 215508811 U CN215508811 U CN 215508811U
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Abstract
The utility model belongs to the technical field of cold heading processes, and particularly relates to a cold heading die for eccentric shaft production, which comprises an upper clamp and a lower clamp; a first tool, a second tool, a third tool, a fourth tool, a fifth tool and a sixth tool are sequentially arranged between the upper clamp and the lower clamp from right to left; the first tool consists of a die stamping shell, a front stamping rod, a fixed die shell and a rear stamping rod; the punching mould shell is connected in the upper clamp in a sliding manner; the front punching rod is connected in the punching mould shell in a sliding manner; a front punching cushion rod is arranged inside the punching mould shell; through the intercombination between the multiunit frock through the design, the plastic dish round wire rod of corresponding diameter of cooperation can make the wire rod shaping step by step on specific multistation cold heading bolt machine equipment to realize once only accomplishing a series of actions of wire rod from disconnected material to cold stamping, improved the utilization ratio of raw and other materials, reduced the manufacturing cost of work piece to a certain extent.
Description
Technical Field
The utility model belongs to the technical field of cold heading processes, and particularly relates to a cold heading die for eccentric shaft production.
Background
The cold heading process is one of the non-cutting metal pressure processing processes which are commonly used at present, and is often applied to processing of metals such as eccentric shafts and the like.
At present, the means of processing metal parts such as eccentric shafts and the like in the same industry in China are that the bars are customized to be discharged, then the eccentric shafts are machined and the steps are machined by a machining center, and finally the conical surfaces are machined by a machining center, or the bars are customized and then machined by a traveling and milling combined machining center, and the process has the defects of high production cost, low material utilization rate and low processing efficiency when workpieces with complex shapes are processed, and cannot be produced in batches due to large processing allowance.
Therefore, the cold-heading die for producing the eccentric shaft is provided aiming at the problems.
SUMMERY OF THE UTILITY MODEL
In order to make up for the defects of the prior art and solve the problems that the production cost is high, the utilization rate of materials is reduced, and the processing efficiency is low and the batch production cannot be realized when a workpiece with a complex shape is processed in the prior art due to large processing allowance, the cold heading die for producing the eccentric shaft is provided.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model relates to a cold heading die for eccentric shaft production, which comprises an upper clamp and a lower clamp; a first tool, a second tool, a third tool, a fourth tool, a fifth tool and a sixth tool are sequentially arranged between the upper clamp and the lower clamp from right to left;
the first tool consists of a die stamping shell, a front stamping rod, a fixed die shell and a rear stamping rod; the punching mould shell is connected in the upper clamp in a sliding manner; the front punching rod is connected in the punching mould shell in a sliding manner; a front punching cushion rod is arranged inside the punching mould shell; the top end of the front punching rod is fixedly connected with the bottom end of the front punching cushion rod; the fixed die shell is fixedly connected in the lower clamp; the rear punching rod is connected in the fixed die shell in a sliding manner; a rear cushion rod is arranged inside the fixed die shell; the bottom end of the rear punching rod is fixedly connected with the top end of the rear punching cushion rod; the wire rod sequentially passes through the first tool, the second tool, the third tool, the fourth tool, the fifth tool and the sixth tool from right to left during machining, and is stamped by the corresponding front stamping rod, and when the wire rod is in the first tool, the wire rod is stamped and shaped by the front stamping rod in the first tool, so that the shaped shape rule of the wire rod is formed by machining the material by the subsequent tools.
Preferably, a first punching groove is formed in the top end of the fixed formwork; the bottom end of the front punching rod is matched and connected in the first punching groove; the front punching rod is downwards matched and connected in the first punching groove on the top surface of the fixed die shell under the punching action of external force, and is matched with the rear punching rod in the fixed die shell to realize the first-step shaping action on the material.
Preferably, a second punching groove is formed in the second tool; the structure difference of the second punching groove is different from that of the first punching groove; the structure of the second punching groove is different from that of the first punching groove to a certain extent, and after the material is punched in the second punching groove, the taper surface at the tail part of the material is preformed, so that the stress of a subsequent tool is reduced, and the service life of a die of the subsequent tool is indirectly prolonged.
Preferably, a T-shaped cushion block is arranged at the top of the third tool; the bottom of the T-shaped cushion block is sleeved with a spring; the bottom end of the T-shaped cushion block is fixedly connected with a movable stamping die; the material of the second tool is then fed into the third tool and is subjected to stamping by the movable die therein, wherein the movable die, when acting on the material, forms the tapered surface of the tail part of the eccentric shaft at the same time as the head part of the eccentric shaft is preformed.
Preferably, the movable stamping die is connected in the third tool in a sliding manner; a third punching groove is formed in the third tool; the structure difference of the third punching groove is different from that of the first punching groove and the second punching groove; the bottom surfaces of the first punching groove and the second punching groove are provided with slopes with different curvatures and are arranged inside the fixed module; and the bottom surface of the third punching groove is set to be a molding curvature gradient and is arranged on the top surface of the fixed die.
Preferably, a stacking punch is arranged at the top of the fourth tool; the structure of the stockpiling punch rod is different from that of the front punch rod; when the stacking punch rod punches the material, due to the structural particularity of the stacking punch rod, the stacking is carried out at the top end of the preforming eccentric shaft, so that the punch forming of the subsequent station is facilitated.
Preferably, a fourth punching groove is formed in the fourth tool; the fourth punching groove is different from the first punching groove, the second punching groove and the third punching groove in structure; the structure of the fourth punching groove is suitable for stacking the head of the preformed eccentric shaft, so that the structure of the fourth punching groove is different from the structures of the first punching groove, the second punching groove and the third punching groove, and the fourth punching groove is arranged in the fixed die.
Preferably, the first tool, the second tool, the third tool, the fourth tool, the fifth tool and the sixth tool are all in fit connection in the lower clamp; the fifth tool is suitable for shaping the preformed eccentric shaft to enable the preformed eccentric shaft to be punched into a formed eccentric shaft, and the sixth tool is suitable for finishing the formed eccentric shaft, so that the size precision of the finished eccentric shaft is improved and the consistency is kept.
The utility model has the beneficial effects that:
the utility model provides a cold heading die for eccentric shaft production, which can enable a wire to be formed step by step on a specific multi-station cold heading plug machine device by mutually combining a plurality of designed tools and matching with a plastic coiled wire rod with a corresponding diameter, thereby realizing a series of actions from material breaking to cold stamping of the wire rod at one time, improving the utilization rate of raw materials and reducing the production cost of workpieces to a certain extent.
The utility model provides a cold-heading die for eccentric shaft production, which realizes one-time forming from material breakage to cold stamping of a wire rod through mutual matching of a plurality of groups of tools, improves the processing efficiency of a product to a certain extent, can realize one-time forming of a complex structure in the using process of the plurality of groups of designed tools, does not need secondary machining, ensures the precision of the product because each part of the material is tightly attached to the die, reduces the labor cost and reduces the labor intensity in a certain sense.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:
FIG. 1 is a plan view of the first embodiment;
FIG. 2 is an enlarged view of the structure of part A of FIG. 1;
FIG. 3 is an enlarged schematic view of the structure of part B of FIG. 1;
FIG. 4 is a perspective view of a lower clamp according to a first embodiment;
FIG. 5 is a plan view of the second embodiment;
illustration of the drawings:
1. an upper clamp; 2. a lower clamp; 3. a first tool; 31. punching a mould shell; 32. forward punching the cushion rod; 33. a front punching rod; 34. fixing a mould shell; 35. punching the rod; 36. a rear punch pad bar; 37. a first notching; 4. a second tool; 41. a second notching; 5. a third tool; 51. a T-shaped cushion block; 52. a spring; 53. a movable die; 54. a third notching; 6. a fourth tool; 61. stacking a punch; 62. a fourth notching; 7. a fifth tool; 8. a sixth tool; 9. reserving a groove; 91. a rubber gasket; 92. circular hole groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Specific examples are given below.
The first embodiment is as follows:
referring to fig. 1 to 4, the present invention provides a cold heading die for eccentric shaft production, comprising an upper clamp 1 and a lower clamp 2; a first tool 3, a second tool 4, a third tool 5, a fourth tool 6, a fifth tool 7 and a sixth tool 8 are sequentially arranged between the upper clamp 1 and the lower clamp 2 from right to left;
the first tool 3 consists of a punching die shell 31, a front punching rod 33, a fixed die shell 34 and a rear punching rod 35; the punching die shell 31 is connected in the upper clamp 1 in a sliding manner; the front punching rod 33 is connected in the punching mould shell 31 in a sliding way; a front punching pad rod 32 is arranged inside the punching mould shell 31; the top end of the front punching rod 33 is fixedly connected with the bottom end of the front punching cushion rod 32; the fixed die shell 34 is fixedly connected in the lower clamp 2; the rear punching rod 35 is connected in the fixed die shell 34 in a sliding manner; a rear cushion rod 36 is arranged inside the fixed die shell 34; the bottom end of the back punch rod 35 is fixedly connected with the top end of the back punch pad rod 36.
When the wire rod punching and shaping device works, a wire rod with a specific size corresponds to the sizes of the first tool 3, the second tool 4, the third tool 5, the fourth tool 6, the fifth tool 7 and the sixth tool 8, the wire rod sequentially passes through the first tool 3, the second tool 4, the third tool 5, the fourth tool 6, the fifth tool 7 and the sixth tool 8 from right to left during machining, and is punched by the corresponding forward punching rods 33, and when the wire rod is in the first tool 3, the wire rod is punched and shaped by the forward punching rods 33 in the first tool 3, so that the shaped shape rule of the wire rod is formed by machining the material by the subsequent tools.
A first punching groove 37 is arranged at the top end of the fixed die shell 34; the bottom end of the front punch rod 33 is matched and connected in the first punch groove 37.
When the material shaping device works, the front punch bar 33 is downwards matched and connected in the first punch groove 37 on the top surface of the fixed die shell 34 under the punching action of external force, and is matched with the rear punch bar 35 in the fixed die shell 34 to realize the shaping action of the first step on the material.
A second punching groove 41 is formed in the second tool 4; the second punch grooves 41 are different in structure from the first punch grooves 37.
During operation, the material passing through the first tooling 3 enters the second tooling 4 next time and is subjected to secondary stamping, the structure of the second stamping groove 41 is different from that of the first stamping groove 37 to a certain extent, and after the material is stamped in the second stamping groove 41, the taper surface at the tail part of the material is preformed, so that the stress of the subsequent tooling is reduced, and the service life of a die of the subsequent tooling is indirectly prolonged.
A T-shaped cushion block 51 is arranged at the top of the third tool 5; the bottom of the T-shaped cushion block 51 is sleeved with a spring 52; the bottom end of the T-shaped cushion block 51 is fixedly connected with a movable die 53.
In operation, the material passing through the second tooling 4 is then fed into the third tooling 5 and is stamped by the movable die 53 therein, wherein the movable die 53 acts on the material to preform the head of the eccentric shaft and simultaneously form the tapered surface at the tail thereof.
The movable die 53 is connected in the third tooling 5 in a sliding manner; a third punching groove 54 is formed in the third tool 5; the third punch groove 54 is different from the first punch groove 37 and the second punch groove 41 in structure.
During operation, the third punching groove 54 in the third tooling 5 is different from the first punching groove 37 and the second punching groove 41, wherein the bottom surfaces of the first punching groove 37 and the second punching groove 41 are both provided with slopes with different curvatures and are arranged in the fixed module; while the bottom surface of the third washout groove 54 is provided with a profiled curvature slope and is provided on the top surface of the stationary mold.
The top of the fourth tool 6 is provided with a stacking punch 61; the construction of the windrow punch 61 is different from that of the front punch 33.
During operation, after entering the fourth tooling 6, the material is stamped by the stacking punch 61, wherein the stacking punch 61 stacks the material at the top end of the preforming eccentric shaft due to the structural particularity of the material while stamping the material, so that the stamping forming of the subsequent station is facilitated.
A fourth punching groove 62 is formed in the fourth tool 6; the fourth punch groove 62 is different from the first punch groove 37, the second punch groove 41 and the third punch groove 54 in structure.
In operation, the fourth punch slot 62 is configured for stacking preformed eccentric shaft heads, and thus is configured differently from the first punch slot 37, the second punch slot 41 and the third punch slot 54, and is disposed within the stationary mold.
The first tool 3, the second tool 4, the third tool 5, the fourth tool 6, the fifth tool 7 and the sixth tool 8 are all connected in the lower clamp 2 in a matching mode.
During operation, the fifth tooling 7 is suitable for shaping the preformed eccentric shaft so that the preformed eccentric shaft can be punched into a formed eccentric shaft, and the sixth tooling 8 is suitable for finishing the formed eccentric shaft so that the size precision of the finished eccentric shaft can be improved and the consistency can be kept.
Example two:
referring to fig. 5, in another implementation manner of the first example, the joints between the lower fixture 2 and the bottoms of the first tool 3, the second tool 4, the third tool 5, the fourth tool 6, the fifth tool 7, and the sixth tool 8 in the first example are further provided with a preformed groove 9; a rubber gasket 91 is arranged in the reserved groove 9; the middle part of the rubber gasket 91 is provided with a circular hole groove 92; the rear punch pad bar 36 is perforated in a circular hole slot 92; during operation, the rubber gasket 91 can play a buffering effect on the punching of the first tool 3, the second tool 4, the third tool 5, the fourth tool 6, the fifth tool 7 and the sixth tool 8, and the defect of the structure caused by fixed extrusion of the rubber gasket and the lower fixture 2 during punching is avoided, so that the punching precision is not affected.
The working principle is as follows: the wire sequentially passes through the first tool 3, the second tool 4, the third tool 5, the fourth tool 6, the fifth tool 7 and the sixth tool 8 from right to left during machining, and is stamped by the corresponding front stamping rod 33, and when the wire is in the first tool 3, the wire is stamped and shaped by the front stamping rod 33 in the first tool 3, so that the shaped shape is regular and the material is machined and formed by the subsequent tools; the material passing through the first tool 3 enters the second tool 4 next and is subjected to secondary stamping in the second tool, the structure of the second stamping groove 41 is different from that of the first stamping groove 37, and after the material is stamped in the second stamping groove 41, the taper surface at the tail part of the material is preformed, so that the stress of the subsequent tool is reduced, and the service life of a die of the subsequent tool is indirectly prolonged; the material passing through the second tooling 4 next enters the third tooling 5 and is stamped by the movable stamping die 53 therein, wherein when the movable stamping die 53 acts on the material, the taper surface at the tail part of the eccentric shaft is formed while the head part of the eccentric shaft is preformed; after entering the fourth tooling 6, the material is stamped by the stacking punch 61, wherein when the stacking punch 61 stamps the material, due to the structural particularity of the stacking punch, the material is stacked at the top end of the preforming eccentric shaft, so that the stamping forming of the subsequent station is facilitated; the fifth tooling 7 is suitable for shaping the preformed eccentric shaft so that the preformed eccentric shaft can be punched into a formed eccentric shaft, and the sixth tooling 8 is suitable for finishing the formed eccentric shaft so that the size precision of the finished eccentric shaft can be improved and the consistency can be kept.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed.
Claims (8)
1. The utility model provides an eccentric shaft production is with cold-heading mould which characterized in that: comprises an upper clamp (1) and a lower clamp (2); a first tool (3), a second tool (4), a third tool (5), a fourth tool (6), a fifth tool (7) and a sixth tool (8) are sequentially arranged between the upper clamp (1) and the lower clamp (2) from right to left;
the first tool (3) consists of a die shell (31), a front punch rod (33), a fixed die shell (34) and a rear punch rod (35); the punching die shell (31) is connected in the upper clamp (1) in a sliding manner; the front punching rod (33) is connected in the punching mould shell (31) in a sliding way; a front punching pad rod (32) is arranged inside the punching mould shell (31); the top end of the front punching rod (33) is fixedly connected with the bottom end of the front punching cushion rod (32); the fixed die shell (34) is fixedly connected in the lower clamp (2); the rear punching rod (35) is connected in the fixed die shell (34) in a sliding manner; a rear punching pad rod (36) is arranged inside the fixed die shell (34); the bottom end of the back punching rod (35) is fixedly connected with the top end of the back punching cushion rod (36).
2. The cold-heading die for producing the eccentric shaft according to claim 1, wherein: a first punching groove (37) is formed in the top end of the fixed die shell (34); the bottom end of the front punching rod (33) is connected in the first punching groove (37) in a matching manner.
3. The cold-heading die for producing the eccentric shaft according to claim 2, wherein: a second punching groove (41) is formed in the second tool (4); the structure of the second punching groove (41) is different from that of the first punching groove (37).
4. The cold-heading die for producing the eccentric shaft according to claim 3, wherein: a T-shaped cushion block (51) is arranged at the top of the third tool (5); a spring (52) is sleeved at the bottom of the T-shaped cushion block (51); the bottom end of the T-shaped cushion block (51) is fixedly connected with a movable stamping die (53).
5. The cold-heading die for producing the eccentric shaft according to claim 4, wherein: the movable stamping die (53) is connected in the third tool (5) in a sliding manner; a third punching groove (54) is formed in the third tool (5); the third punching groove (54) is different from the first punching groove (37) and the second punching groove (41) in structure.
6. The cold-heading die for producing the eccentric shaft according to claim 5, wherein: a stacking punch rod (61) is arranged at the top of the fourth tool (6); the structure of the stockpiling punch rod (61) is different from that of the front punch rod (33).
7. The cold-heading die for producing the eccentric shaft according to claim 6, wherein: a fourth punching groove (62) is formed in the fourth tool (6); the fourth punching groove (62) is different from the first punching groove (37), the second punching groove (41) and the third punching groove (54) in structure.
8. The cold-heading die for producing the eccentric shaft according to claim 7, wherein: the first tool (3), the second tool (4), the third tool (5), the fourth tool (6), the fifth tool (7) and the sixth tool (8) are all connected in the lower clamp (2) in a matching mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121518677.6U CN215508811U (en) | 2021-07-05 | 2021-07-05 | Cold-heading mould is used in eccentric shaft production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121518677.6U CN215508811U (en) | 2021-07-05 | 2021-07-05 | Cold-heading mould is used in eccentric shaft production |
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| Publication Number | Publication Date |
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| CN215508811U true CN215508811U (en) | 2022-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121518677.6U Active CN215508811U (en) | 2021-07-05 | 2021-07-05 | Cold-heading mould is used in eccentric shaft production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115351211A (en) * | 2022-09-26 | 2022-11-18 | 贵州航天新力科技有限公司 | Shape following accurate forming method for eccentric water drop type end cover forge piece |
-
2021
- 2021-07-05 CN CN202121518677.6U patent/CN215508811U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115351211A (en) * | 2022-09-26 | 2022-11-18 | 贵州航天新力科技有限公司 | Shape following accurate forming method for eccentric water drop type end cover forge piece |
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