Ratchet shaft cold heading device

Abstract

According to the technical scheme, the ratchet shaft cold heading device is characterized in that the ratchet shaft cold heading device comprises a shell, a telescopic collision motor and a moving assembly are installed in the shell, the telescopic collision motor comprises a collision head, the moving assembly is connected with a fixing assembly and a forming assembly, and the forming assembly comprises a stamping die used for ratchet forming. A containing cavity is formed in the stamping die, the containing cavity is provided with a forming groove and a through hole communicating the forming groove with the outer side of the stamping die, the stamping die is slidably connected with a molding hammer arranged in the containing cavity, the fixing assembly comprises a fixing piece, and the fixing piece is provided with a fixing groove which is arranged on the same level as the through hole and used for fixing a ratchet wheel forming prefabricated part. Forming of the ratchet wheel is controlled through the molding hammer and the forming groove, power is provided through the telescopic collision motor, and therefore the purposes that the ratchet wheel shaft is machined through the cold heading technology, the material utilization rate and the machining efficiency are improved, and the production cost is reduced are achieved.

Description

Technical Field

[0001] The utility model relates to a cold heading device, and more specifically, to a cold heading device for a ratchet shaft. Background Art

[0002] A cold heading device is a special equipment for the cold heading process. The cold heading process is a new non-cutting or less-cutting metal pressure processing technology. It utilizes the plastic deformation of metal under the action of external force and, with the help of a die, redistributes and transfers the metal volume to form the required parts or blanks. For a ratchet shaft, a long shaft and a rotating flange are usually assembled together by welding, and then the rotating flange is punched out into the required shape by stamping. When producing small ratchet shafts in this way, not only is the processing cost high due to low material utilization rate, but also the processing efficiency is very low. Therefore, a cold heading device for a ratchet shaft is needed to process the ratchet shaft through the cold heading process, improve the material utilization rate and processing efficiency, and reduce the production cost.

[0003] Combined with the above reasons, how to process the ratchet shaft through the cold heading process is exactly the problem considered in this application. Summary of the Utility Model

[0004] In view of the deficiencies of the prior art, a plug is provided. This device can process the ratchet shaft through the cold heading process, improve the material utilization rate and processing efficiency, and reduce the production cost.

[0005] To achieve the above object, the following technical solutions are provided: A cold heading device for a ratchet shaft includes a housing. An expansion and impact motor and a moving component are installed in the housing. The expansion and impact motor includes an impact head. The moving component is connected to a fixing component and a forming component. The forming component includes a stamping die for ratchet forming. A receiving cavity for placing a ratchet forming preform is provided in the stamping die. A forming groove and a through hole connecting the forming groove with the outside of the stamping die are provided on the side of the receiving cavity away from the expansion and impact motor. A plastic forming hammer provided in the receiving cavity is slidably connected to the side of the stamping die close to the expansion and impact motor. The plastic forming hammer is arranged in the same horizontal direction as the impact head. The fixing component includes a fixing piece provided on the side of the stamping die away from the expansion and impact motor. A fixing groove arranged in the same horizontal direction as the through hole and used for fixing the ratchet forming preform is provided on the fixing piece.

[0006] In summary, the above technical solutions have the following beneficial effects: The shape of the ratchet forming preform is usually a large-diameter cylindrical shape connected to a small-diameter cylindrical shape. The small-diameter cylindrical shape needs to be processed into the shape of a connecting shaft according to actual requirements, so it is not a part that needs to be considered during the cold heading forming of the ratchet shaft.

[0007] In use, the cylindrical part with a larger outer diameter of the ratchet forming prefabricated part is placed in the accommodating cavity of the stamping die. First, the shaping hammer needs to be detached from the stamping die, and then the cylindrical part with a smaller outer diameter of the ratchet forming prefabricated part is passed through the through hole and finally fixed in the fixing groove of the fixing part, so as to achieve the purpose of fixing the ratchet forming prefabricated part. Then, the shaping hammer is installed back. Since the shaping hammer and the impact head are arranged in the same horizontal direction, when the telescopic impact motor starts, it will quickly drive the shaping hammer to repeatedly impact the ratchet forming prefabricated part, so that the ratchet forming prefabricated part can gradually be embedded into the forming groove and finally form the required ratchet shape, thus realizing the processing of the ratchet shaft through the cold heading process, improving the material utilization rate and processing efficiency, and reducing the production cost;

[0008] In addition, this cold heading device for ratchet shafts can also produce ratchet shafts of different models by replacing different stamping dies and corresponding fixing parts. The shaping hammer can also gradually increase the impact force by controlling the telescopic impact motor to form the ratchet shaft step by step, thereby reducing the possibility of processing failure of the ratchet shaft and indirectly reducing the production cost;

[0009] The utility model controls the formation of the ratchet through the shaping hammer and the forming groove, and provides power through the telescopic impact motor, thus realizing the processing of the ratchet shaft through the cold heading process, improving the material utilization rate and processing efficiency, and reducing the production cost. Brief Description of the Drawings

[0010] Figure 1 It is a sectional view when the stamping die of the utility model is accommodated inside the housing;

[0011] Figure 2 It is a three-dimensional structure schematic diagram of the utility model;

[0012] Figure 3 It is a sectional view when the stamping die of the utility model extends out of the housing;

[0013] Figure 4 It is a three-dimensional structure schematic diagram of the stamping die.

[0014] Reference Signs: 1, housing; 2, telescopic impact motor; 3, moving component; 4, fixing component; 5, forming component;

[0015] 11, opening; 12, first guide rail; 13, buffer; 14, cover plate;

[0016] 21, impact head;

[0017] 31, support beam; 32, bracket; 33, first slider; 34, second guide rail;

[0018] 41, fixing part; 42, fixing groove; 43, first positioning frame; 44, second positioning frame; 45, cylinder;

[0019] 51. Stamping die; 52. Positioning plate; 53. Second slider; 54. Clamping device;

[0020] 511. Accommodating cavity; 512. Forming groove; 513. Through hole; 514. Shaping hammer; 515. Clamping piece; 516. Track; 517. Limit block. Detailed implementation manner

[0021] The present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0022] Refer to Figures 1-4 As shown, the cold heading device for ratchet shafts includes a housing 1. An expansion impact motor 2 and a moving component 3 are installed in the housing 1. The expansion impact motor 2 includes an impact head 21. The moving component 3 is connected to a fixing component 4 and a forming component 5. The forming component 5 includes a stamping die 51 for ratchet forming. An accommodating cavity 511 for placing ratchet forming prefabricated parts is provided in the stamping die 51. A forming groove 512 and a through hole 513 communicating the forming groove 512 with the outside of the stamping die 51 are provided on the side of the accommodating cavity 511 away from the expansion impact motor 2. A shaping hammer 514 provided in the accommodating cavity 511 is slidably connected to the side of the stamping die 51 close to the expansion impact motor 2. The shaping hammer 514 is arranged in the same horizontal direction as the impact head 21. The fixing component 4 includes a fixing piece 41 provided on the side of the stamping die 51 away from the expansion impact motor 2. A fixing groove 42 arranged in the same horizontal direction as the through hole 513 and used for fixing ratchet forming prefabricated parts is provided on the fixing piece 41;

[0023] The shape of the ratchet forming prefabricated part is usually a cylindrical shape with a larger outer diameter connected to a cylindrical shape with a smaller outer diameter. The cylindrical shape with a smaller outer diameter needs to be processed into the shape of a connecting shaft according to actual requirements, so it does not belong to the part that needs to be considered during the cold heading forming of ratchet shafts;

[0024] During use, the cylindrical part with a larger outer diameter of the ratchet forming prefabricated part will be placed in the receiving cavity 511 of the stamping die 51. First, the shaping hammer 514 needs to be detached from the stamping die 51. Then, the cylindrical part with a smaller outer diameter of the ratchet forming prefabricated part is passed through the through hole 513 and finally fixed in the fixing groove 42 of the fixing part 41, so as to achieve the purpose of fixing the ratchet forming prefabricated part. Subsequently, the shaping hammer 514 is reinstalled. Since the shaping hammer 514 is arranged in the same horizontal direction as the impact head 21, when the telescopic impact motor 2 is started, it will quickly drive the shaping hammer 514 to reciprocally impact the ratchet forming prefabricated part, so that the ratchet forming prefabricated part can gradually be embedded into the forming groove 512 and finally form the required ratchet shape, thus realizing the processing of the ratchet shaft through the cold heading process, improving the material utilization rate and processing efficiency, and reducing the production cost;

[0025] In addition, this cold heading device for ratchet shafts can also produce ratchet shafts of different models by replacing different stamping dies 51 and corresponding fixing parts 41. The impact force of the shaping hammer 514 can also be gradually increased by controlling the telescopic impact motor 2 to form the ratchet shaft step by step, thereby reducing the possibility of processing failure of the ratchet shaft and indirectly reducing the production cost;

[0026] The utility model controls the formation of the ratchet through the shaping hammer 514 and the forming groove 512, and provides power through the telescopic impact motor 2, thereby realizing the processing of the ratchet shaft through the cold heading process, improving the material utilization rate and processing efficiency, and reducing the production cost.

[0027] Furthermore, an opening 11 is provided at the top of the housing 1, and a first guide rail 12 which is vertically arranged and located below the opening 11 is fixedly connected to the side of the housing 1. The moving component 3 includes two support beams 31 which are symmetrically arranged on both sides of the housing 1 and located below the opening 11. The support beams 31 are in contact with both the stamping die 51 and the fixing part 41. A bracket 32 is fixedly connected to the support beam 31, and a first slider 33 which is slidably connected to the first guide rail 12 is fixedly connected to the bracket 32;

[0028] By vertically moving the first slider 33 on the first guide rail 12, the bracket 32 can be driven into or out of the housing 1, so that the fixing component 4 and the forming component 5 can be driven out of the housing 1 by the support beam 31. This can facilitate the replacement of different models of stamping dies 51 and fixing parts 41 for producing ratchet shafts of different models, and can also prevent the materials from popping out during cold heading operation and hurting the staff, thereby indirectly realizing the purpose of improving the material utilization rate and processing efficiency and reducing the production cost.

[0029] Further, a second guide rail 34 is fixedly connected to the side of the bracket 32 away from the housing 1. The forming assembly 5 includes a positioning plate 52. A second slider 53 slidably connected to the second guide rail 34 is fixedly connected to the side of the positioning plate 52 facing the bracket 32. A clamping device 54 for clamping the stamping die 51 is fixedly connected to the side of the positioning plate 52 away from the bracket 32;

[0030] Since there is a certain height difference between stamping dies 51 of different models, the second guide rail 34 and the second slider 53 are provided to adjust the position of the positioning plate 52 so that the stamping die 51 can be stably placed on the support beam 31.

[0031] Further, a clamping member 515 for being clamped by the clamping device 54 is fixedly connected to the side of the stamping die 51. A plurality of tracks 516 are provided in the accommodation cavity 511. A plurality of limit blocks 517 cooperating with the tracks 516 are fixedly connected to the shaping hammer 514;

[0032] Since the shaping hammer 514 is directly matched with the stamping die 51, the shaping hammer 514 cannot be directly connected to the impact head 21 to avoid hindering the movement of the forming assembly 5. The limit blocks 517 and the tracks 516 are provided to stabilize the movement process of the shaping hammer 514.

[0033] Further, the shaping hammer 514 is made of a magnetic material, and the impact head 21 is made of an electromagnet material;

[0034] When mass-producing ratchet shafts of the same model, it is time-consuming and laborious to frequently disassemble and assemble the shaping hammer 514. Therefore, the shaping hammer 514 is made of a magnetic material. When the impact head 21 made of an electromagnet material is energized, the shaping hammer 514 can be adsorbed. In this way, when the stamping die 51 moves upward and replaces the ratchet forming prefabricated part, it can be more rapid and convenient, thereby improving the processing efficiency.

[0035] Further, the fixing assembly 4 further includes a first positioning frame 43 fixedly connected to the support beam 31 and used for stabilizing the position of the fixing member 41. The first positioning frame 43 is detachably connected to a second positioning frame 44. The second positioning frame 44 is fixedly connected to a cylinder 45 fixedly connected to the bracket 32;

[0036] When the first positioning frame 43 is separated from the second positioning frame 44, the fixing member 41 can be conveniently replaced. When the first positioning frame 43 is combined with the second positioning frame 44, the fixing member 41 can be pressed to stabilize the position of the fixing member 41 and prevent displacement. In addition, the cylinder 45 is provided to realize the movement of the first positioning frame 43, and when the first positioning frame 43 is combined with the second positioning frame 44, the cylinder 45 can apply a certain degree of pressure to further stabilize the position of the fixing member 41.

[0037] Further, the housing 1 is further fixedly connected with a buffer member 13 abutting against the fixing member 41;

[0038] Since cold heading achieves metal deformation by impact, a relatively large impact force will be generated. To prevent equipment damage, a buffer member 13 is used to fill the gap between the fixing member 41 and the housing 1. In addition, when the two support beams 31 move downward, they will move on both sides of the buffer member 13, so the buffer member 13 will not affect the overall operation.

[0039] Furthermore, the housing 1 is also slidably connected with a cover plate 14 for sealing the opening 11, which can further prevent the broken materials from flying out of the housing 1 and injuring the surrounding staff.

[0040] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. Cold heading device for ratchet shaft, characterized in that, It includes a housing, in which a telescopic impact motor and a moving component are installed. The telescopic impact motor includes an impact head. The moving component is connected to a fixing component and a forming component. The forming component includes a stamping die for ratchet forming. A receiving cavity for placing a ratchet forming preform is provided in the stamping die. A forming groove and a through hole communicating the forming groove with the outside of the stamping die are provided on the side of the receiving cavity away from the telescopic impact motor. A shaping hammer arranged in the receiving cavity is slidably connected to the side of the stamping die close to the telescopic impact motor. The shaping hammer is arranged in the same horizontal direction as the impact head. The fixing component includes a fixing piece arranged on the side of the stamping die away from the telescopic impact motor. A fixing groove arranged in the same horizontal direction as the through hole and used for fixing the ratchet forming preform is provided on the fixing piece.

2. The cold heading device for a ratchet shaft according to claim 1, wherein An opening is provided at the top of the housing. A first guide rail which is vertically arranged and located below the opening is also fixedly connected to the side of the housing. The moving component includes two support beams symmetrically arranged on both sides of the housing and located below the opening. The support beams are in contact with both the stamping die and the fixing piece. The support beams are fixedly connected to a bracket, and the bracket is fixedly connected to a first slider slidably connected to the first guide rail.

3. The cold heading device for a ratchet shaft according to claim 2, characterized in that, A second guide rail is also fixedly connected to the side of the bracket away from the housing. The forming component includes a positioning plate. A second slider slidably connected to the second guide rail is fixedly connected to the side of the positioning plate facing the bracket. A clamping device for clamping the stamping die is fixedly connected to the side of the positioning plate away from the bracket.

4. The cold heading device for ratchet shafts according to claim 3, characterized in that, A clamping piece for being clamped by the clamping device is fixedly connected to the side of the stamping die. A plurality of tracks are provided in the receiving cavity. A plurality of limiting blocks cooperating with the tracks are fixedly connected to the shaping hammer.

5. The cold heading device for a ratchet shaft according to claim 1, wherein, The shaping hammer is made of a magnetic material, and the impact head is made of an electromagnet material.

6. The cold heading device for ratchet shafts according to claim 2, characterized in that, The fixing component further includes a first positioning frame fixedly connected to the support beam and used for stabilizing the position of the fixing piece. The first positioning frame is detachably connected to a second positioning frame, and the second positioning frame is fixedly connected to a cylinder fixedly connected to the bracket.

7. The cold heading device for a ratchet shaft according to claim 1, characterized in that, The housing is also fixedly connected to a buffer piece in contact with the fixing piece.

8. The cold heading device for ratchet shafts according to claim 1, characterized in that, A cover plate for closing the opening is also slidably connected to the housing.

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