Cold heading die for integrally forming gear shaft

Abstract

The utility model discloses a cold heading die for integrally forming a gear shaft. The cold heading die comprises a tooth A machining sub-die and a tooth B machining sub-die which are sequentially used, the tooth A processing sub-die comprises a first stamping die and a first lower die which are matched for use, and the first stamping die comprises a first die sleeve and a first stamping rod which is matched for use; the first lower die comprises a first lower die sleeve, a first die sheet, a first involute spline die core, a first die core, a first main die rear pad, a first die sleeve rear lock tooth and a first conical lantern ring; the tooth B machining sub-die comprises a second punching die and a second lower die which are used in cooperation. By improving the cold heading die, machining of the whole gear shaft can be completed only through the cold heading procedure, integral forming is directly carried out on cold heading equipment, the complex process that cold heading forming is needed, and then gear turning is carried out is thoroughly solved, and the machining efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear shaft processing technical field, concretely relates to a gear shaft integrated forming uses cold heading die. BACKGROUND

[0002] Gear shaft refers to the mechanical part that supports the rotating part and rotates together with it to transmit motion, torque or bending moment. Figure 1 As shown in a kind of gear shaft structure, tooth A and tooth B are provided on it.The traditional gear shaft machining procedure is first to process metal rod into semi-finished gear shaft as shown in Figure 2 Tooth A and tooth B are machined by milling equipment, this kind of process is more complex, and the efficiency is lower.If the process of machining tooth A and tooth B can be processed by the previous cold heading process, then the processing technology can be simplified, and the processing efficiency can be improved, however, the difficulty of this improved process is how to improve the cold heading die. TECHNICAL SOLUTION

[0003] In view of the technical problems pointed out in the above background technology, the purpose of the present application is to provide a kind of gear shaft integrated forming uses cold heading die.

[0004] To achieve the above object, the technical scheme provided by the utility model is as follows:

[0005] A kind of gear shaft integrated forming uses cold heading die, including tooth A processing sub-mold and tooth B processing sub-mold used in turn;

[0006] The tooth A processing sub-mold includes the first die and the first lower die used in cooperation, the first die includes the first die sleeve and the first punch rod used in cooperation;The first lower die includes the first lower die sleeve, the first die sheet, the first bundle involute spline die core, the first die core and the first main die rear pad, the first die sleeve rear lock tooth, the first conical sleeve ring, the first cavity is provided in the inner side of the first lower die sleeve, the first cavity is sequentially provided with the first conical sleeve ring, the first main die rear pad from top to bottom in it, is locked by the first die sleeve rear lock tooth, the first conical sleeve ring is sequentially provided with the first die sheet, the first bundle involute spline die core, the first die core from top to bottom in it, the first bundle involute spline die core is provided with the bundle involute spline for machining tooth A;

[0007] The tooth B machining sub-mold comprises a second punch and a second lower die used in cooperation, the second punch comprises a second die sleeve and a second punch rod used in cooperation; the second lower die comprises a second lower die sleeve, a second bundle involute spline mold core, a third bundle involute spline mold core, a second mold core and a second main mold back pad, a second die sleeve back lock tooth and a second conical sleeve ring, a second cavity is arranged on the inner side of the second lower die sleeve, the second conical sleeve ring, the second main mold back pad are sequentially arranged from top to bottom in the second cavity, the second die sleeve back lock tooth is locked, the second bundle involute spline mold core, the third bundle involute spline mold core and the second mold core are sequentially arranged from top to bottom in the second conical sleeve ring, the third bundle involute spline mold core is provided with a bundle involute spline adapted to the tooth A, and the second bundle involute spline mold core is provided with a bundle involute spline for machining the tooth B.

[0008] Further, the first lower die is provided with a first lower punch rod hole for ejecting, and a first lower punch rod is used in cooperation in the first lower punch rod hole.

[0009] Further, the second lower die is provided with a second lower punch rod hole for ejecting, and a second lower punch rod is used in cooperation in the second lower punch rod hole.

[0010] Compared with the prior art, the utility model has the advantages that:

[0011] Through the improvement of the cold heading die, the whole gear shaft machining can be completed only through the cold heading process, and the gear shaft is directly integrally formed on the cold heading equipment, so that the complex process of cold heading forming and then turning the gear is solved, and the machining efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of a gear shaft;

[0013] Figure 2 It is a structural schematic view of a semi-finished gear shaft;

[0014] Figure 3 It is a structural schematic view of the cold heading die provided by the embodiment of the application;

[0015] In the drawing, the first punch is 1, the first punch rod is 2, the first lower die is 3, the second punch is 4, the second punch rod is 5, and the second lower die is 6;

[0016] Figure 4 It is a structural schematic view of the first lower die provided by the embodiment of the application;

[0017] In the drawing, the first die sheet is 31, the first bundle involute spline mold core is 32, the first mold core is 33, the first punch rod hole is 34, the first main mold back pad is 35, the first die sleeve back lock tooth is 36, and the first conical sleeve ring is 37;

[0018] Figure 5 A structure diagram of a second lower die provided for an embodiment of the present application is shown in the figure.

[0019] In the figure, the second bundle of involute spline mold cores 61, the third bundle of involute spline mold cores 62, the second mold core 63, the second punch rod hole 64, the second main mold rear pad 65, the second mold sleeve rear locking tooth 66, and the second conical sleeve ring 67. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0021] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0022] In the description of the present patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connect", "set" should be understood broadly, for example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set, and can refer to direct connection or indirect connection. For those skilled in the art, the specific meanings of the above terms in the present patent can be understood according to the specific circumstances.

[0023] As shown in the figure, an embodiment structure provided by the present application is shown in the figure. Figures 1-5

[0024] The embodiment provides a cold heading die for integrally forming a gear shaft, which comprises a tooth A machining sub-die and a tooth B machining sub-die used in sequence.

[0025] ​The tooth A processing sub-mold comprises a first punch 1 and a first lower die 3 used in cooperation, the first punch 1 comprises a first die sleeve and a first punch rod 2 used in cooperation; the first lower die 3 comprises a first lower die sleeve, a first die sheet 31, a first bundle involute spline mold core 32, a first mold core 33, and a first main mold rear pad 35, a first die sleeve rear lock tooth 36, and a first conical sleeve ring 37, the inner side of the first lower die sleeve is provided with a first cavity, the first cavity is sequentially provided from top to bottom with the first conical sleeve ring 37 and the first main mold rear pad 35, and the first conical sleeve ring 37 is sequentially provided from top to bottom with the first die sheet 31, the first bundle involute spline mold core 32, and the first mold core 33, and the first bundle involute spline mold core 32 is provided with a bundle involute spline for processing the tooth A;

[0026] The tooth B processing sub-mold comprises a second punch 4 and a second lower die 6 used in cooperation, the second punch 4 comprises a second die sleeve and a second punch rod 5 used in cooperation; the second lower die 6 comprises a second lower die sleeve, a second bundle involute spline mold core 61, a third bundle involute spline mold core 62, a second mold core 63, and a second main mold rear pad 65, a second die sleeve rear lock tooth 66, and a second conical sleeve ring 67, the inner side of the second lower die sleeve is provided with a second cavity, the second cavity is sequentially provided from top to bottom with the second conical sleeve ring 67 and the second main mold rear pad 65, and the second conical sleeve ring 67 is sequentially provided from top to bottom with the second bundle involute spline mold core 61, the third bundle involute spline mold core 62, and the second mold core 63, the third bundle involute spline mold core 62 is provided with a bundle involute spline adapted to the tooth A, and the second bundle involute spline mold core 61 is provided with a bundle involute spline for processing the tooth B.

[0027] The first lower die 3 is provided with a first lower punch rod hole 34 for ejecting, and the first lower punch rod hole 34 is provided with a first lower punch rod used in cooperation.

[0028] The second lower die 6 is provided with a second lower punch rod hole 64 for ejecting, and the second lower punch rod hole 64 is provided with a second lower punch rod used in cooperation.

[0029] It should be noted that, in actual processing, the tooth A processing sub-mold and the tooth B processing sub-mold are molds in two processes in sequence, the tooth A is processed through the tooth A processing sub-mold first, then the processed product is processed through the tooth B processing sub-mold, and in each process, the punch and the lower die are used in cooperation. By using the improved mold, the tooth milling process is not needed, and the processing efficiency is improved.

[0030] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A cold heading die for integral forming of a gear shaft, characterized in that, This includes the sub-molds for machining teeth A and teeth B, which were used successively. The sub-mold for machining tooth A includes a first punch (1) and a first lower die (3) used in conjunction. The first punch (1) includes a first die sleeve and a first punch bar (2) used in conjunction. The first lower die (3) includes a first lower die sleeve, a first die piece (31), a first bundle of involute spline die cores (32), a first die core (33), a first main die back pad (35), a first die sleeve back locking tooth (36), and a first conical collar (37). A first cavity is provided inside the first lower die sleeve. The first conical collar (37) and the first main die back pad (35) are arranged sequentially from top to bottom inside the first cavity and locked by the first die sleeve back locking tooth (36). The first conical collar (37) is arranged sequentially from top to bottom inside the first die piece (31), the first bundle of involute spline die cores (32), and the first die core (33). The first bundle of involute spline die cores (32) are provided with bundles of involute splines for machining tooth A. The B-tooth machining sub-mold includes a second punch (4) and a second lower die (6) used in conjunction with each other. The second punch (4) includes a second die sleeve and a second punch bar (5) used in conjunction with each other. The second lower die (6) includes a second lower die sleeve, a second bundle of involute spline die cores (61), a third bundle of involute spline die cores (62), a second die core (63), a second main die back pad (65), a second die sleeve back locking tooth (66), and a second conical collar (67). A second cavity is provided inside the second lower die sleeve. The cavity is provided with a second conical collar (67) and a second main mold back pad (65) arranged from top to bottom. The second mold back locking teeth (66) are locked together. The second conical collar (67) is provided with a second bundle of involute spline mold core (61), a third bundle of involute spline mold core (62), and a second mold core (63) arranged from top to bottom. The third bundle of involute spline mold core (62) is provided with bundle of involute splines adapted to tooth A. The second bundle of involute spline mold core (61) is provided with bundle of involute splines for machining tooth B.

2. The cold heading die for integral forming of a gear shaft according to claim 1, characterized in that, The first lower die (3) is provided with a first lower punch hole (34) for ejecting parts, and a first lower punch is used in conjunction with the first lower punch hole (34).

3. The cold heading die for integral forming of a gear shaft according to claim 1, characterized in that, The second lower die (6) is provided with a second lower punch hole (64) for ejecting parts, and a second lower punch is used in conjunction with the second lower punch hole (64).

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