Stamping die for gear sensor magnetic shaft part

Abstract

According to the stamping die for the gear sensor magnetic shaft part, a stamping rod is vertically arranged above a stamping through hole, the stamping rod is a step type reducing round rod, an assembling rod head is arranged at the top end of the stamping rod, a rod body is arranged in the middle of the stamping rod, a stamping head is arranged at the bottom end of the stamping rod, and a vertical step is arranged between the stamping head and the rod body for connection. The length of the punch is two times of the sum of the thickness of the protruding outer edge and the diameter of the punch, the diameter of the rod body is one millimeter larger than the diameter of the punch, and the punching design has the advantages that the punching quality state can be ensured when the ratio of the hole diameter to the material thickness is small, the strength of the punch is effectively enhanced, and the situations of punch breakage and die repairing are reduced.

Description

Technical Field

[0001] This article belongs to the technical field of magnetic axis molds, and specifically relates to a stamping mold for a gear position sensor magnetic axis part. Background Art

[0002] The magnet bushing is an important component in the magnetic axis part of an automotive automatic gear position sensor. Its assembly dimensions have high requirements. Especially, there are through holes in the inner side of the outer edge in a stamping manner. The outer side of the through hole is a protruding outer edge with half of the material thickness thinned by stamping. And in order to ensure the punching accuracy and quality, this protruding outer edge needs to be thinned by stamping first before punching can be carried out.

[0003] However, due to the material of the part itself in the thinning process, stress concentration occurs in the area of the protruding outer edge. The tensile strength and yield strength of the protruding outer edge both increase sharply. And the diameter of the through hole is only 1.5 times the material thickness. When using existing common punches, during normal punching, it is extremely easy for the punch to break and be damaged due to the high tensile strength and yield strength of the protruding outer edge. Summary of the Utility Model

[0004] In order to solve the above problems, this article proposes a stamping mold for a gear position sensor magnetic axis part. The stamping mold is a horizontal through-type stamping mold. From the inlet end to the outlet end in the stamping mold, there are in sequence positioning punching, convex edge blanking, first thinning, second thinning, punching through holes, edge chamfering, upper part blanking, and lower part blanking. At the outlet end of the stamping mold, there is a magnet bushing led out individually. There is a protruding outer edge with a downward thinning on the outer side of the magnet bushing. Above the punching through holes, there is a punching rod vertically arranged. The punching rod is a stepped variable-diameter round rod. There is an assembly rod head at the top of the punching rod, a rod body in the middle of the punching rod, and a punch at the bottom of the punching rod. There is a vertical step connection between the punch and the rod body. The length of the punch is twice the sum of the thickness of the protruding outer edge and the diameter of the punch. The diameter of the rod body is 1 mm larger than the diameter of the punch. The straight part of the punch is shortened, and the diameter of the upper end of the punch should not be too large relative to the working diameter. It is enlarged by 0.5 mm on one side of the working diameter. Through actual verification, the punching quality of the punch is guaranteed, and the punch is not easy to break. The advantage of this punching design is that in the case of a small ratio of hole diameter to material thickness, it can ensure the punching quality state, effectively strengthen the strength of the punch, and reduce the situation of punch breakage and die repair.

[0005] The stamping mold is a step-by-step multi-layer downward pressing mold. The left end of the stamping mold is provided with an inlet end, and the right end of the stamping mold is provided with an outlet end. The process of the stamping mold includes in sequence positioning punching, convex edge blanking, first thinning, second thinning, punching through holes, edge chamfering, upper part blanking, and lower part blanking.

[0006] The shape of the magnet bushing is a special-shaped ring disc. The main body of the magnet bushing is a ring body. The shape of the ring body is a circular ring. An outward protruding edge is provided on the outer side of the ring body. A number of through holes are equidistantly arranged on the surface of the outward protruding edge in an arc shape. A central sleeve hole is provided at the center of the ring body. Inner grooves are equidistantly arranged in a ring shape in the central sleeve hole. Chamfers are provided at the corners of the inner grooves. The shape of the outward protruding edge is a fan-shaped outward edge. An arc transition is provided at the connection step between the outward protruding edge and the ring body. The upper surface of the outward protruding edge is lower than the upper surface of the ring body, and the lower surface of the outward protruding edge is flush with the lower surface of the ring body.

[0007] An exhaust hole is vertically and penetratingly provided at the center of the punching rod. Through the exhaust hole of the punching rod, the air pressure on the surface of the punch can be effectively discharged, preventing high pressure from squeezing the material.

[0008] Beneficial effects:

[0009] The straight body part of the punch is shortened, and the diameter of the upper end of the punch should not be too large relative to the working diameter. It is enlarged by 0.5 mm on one side according to the working diameter. After actual verification, the punching quality of the punch is guaranteed.

[0010] The advantage of this punching design is that in the case of a small ratio of hole diameter to material thickness, it can ensure the punching quality state, effectively strengthen the strength of the punch, and reduce the situations of punch fracture and die repair.

[0011] Through the exhaust hole of the punching rod, the air pressure on the surface of the punch can be effectively discharged, preventing high pressure from squeezing the material. Description of the drawings

[0012] Figure 1 is a stamping flow chart of a stamping die for a magnetic force shaft part of a gear position sensor;

[0013] Figure 2 is a front view of the punching rod of a stamping die for a magnetic force shaft part of a gear position sensor;

[0014] Figure 3 is a schematic diagram of a magnet bushing of a stamping die for a magnetic force shaft part of a gear position sensor;

[0015] Figure 4 is a schematic diagram of the inside of the front of a stamping die for a magnetic force shaft part of a gear position sensor;

[0016] In the figure: 1. Magnet bushing, 11. Ring body, 12. Outward protruding edge, 13. Through hole, 2. Punching rod, 21. Assembly rod head, 22. Rod body, 23. Punch, 24. Exhaust hole, 3. Positioning punching, 4. Convex edge blanking, 5. First thinning, 6. Second thinning, 7. Punching through hole, 8. Edge chamfering, 9. Upper part blanking, 10. Lower part blanking. Detailed implementation manners

[0017] To deepen the understanding of the present utility model, the present utility model will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present utility model and do not limit the protection scope of the present utility model.

[0018] Magnet bushing 1, collar main body 11, protruding outer edge 12, through hole 13, stamping rod 2, assembly rod head 21, rod body 22, punch head 23, exhaust hole 24, positioning punching 3, convex edge blanking 4, first thinning 5, second thinning 6, punching through hole 7, edge chamfering 8, upper part blanking 9, lower part blanking 10.

[0019] As Figure 1 、 2 shown in Figures 3 and 4;

[0020] A stamping die for a magnetic shaft part of a gear position sensor. The stamping die is a horizontal through-type stamping die. Inside the stamping die, from the inlet end to the outlet end, there are successively a positioning punching 3, a convex edge blanking 4, a first thinning 5, a second thinning 6, a punching through hole 7, an edge chamfering 8, an upper part blanking 9, and a lower part blanking 10. A magnet bushing 1 is provided at the outlet end of the stamping die and is individually led out. A protruding outer edge 12 is provided on the outer side of the magnet bushing 1 in a downward pressing and thinning manner. Above the punching through hole 7, a stamping rod 2 is vertically provided. The stamping rod 2 is a stepped variable-diameter round rod. An assembly rod head 21 is provided at the top end of the stamping rod 2. A rod body 22 is provided in the middle of the stamping rod 2. A punch head 23 is provided at the bottom end of the stamping rod 2. A vertical step connection is provided between the punch head 23 and the rod body 22. The length of the punch head 23 is twice the sum of the thickness of the protruding outer edge 12 and the diameter of the punch head 23. The diameter of the rod body 22 is one millimeter larger than the diameter of the punch head 23. The stamping die is a step-by-step multi-layer downward pressing die. The left end of the stamping die is provided with an inlet end, and the right end of the stamping die is provided with an outlet end. The process of the stamping die successively includes a positioning punching 3, a convex edge blanking 4, a first thinning 5, a second thinning 6, a punching through hole 7, an edge chamfering 8, an upper part blanking 9, and a lower part blanking 10. The shape of the magnet bushing 1 is a special-shaped ring disc. The main body of the magnet bushing 1 is a collar main body 11. The shape of the collar main body 11 is a circular ring. A protruding outer edge 12 is provided on the outer side of the collar main body 11. A number of through holes 13 are provided on the surface of the protruding outer edge 12 in an arc-shaped and equally spaced manner. A central sleeve hole is provided at the center of the collar main body 11. Inner grooves are provided in the central sleeve hole in an annular and equally spaced manner. Chamfers are provided at the corners of the inner grooves. The shape of the protruding outer edge 12 is a fan-shaped outer edge. An arc transition is provided at the connection step between the protruding outer edge 12 and the collar main body 11. The upper surface of the protruding outer edge 12 is lower than the upper surface of the collar main body 11. The lower surface of the protruding outer edge 12 is flush with the lower surface of the collar main body 11. An exhaust hole 24 is vertically penetrated through the center of the stamping rod 2.

[0021] Embodiment example;

[0022] The straight body part of the punch is shortened, and the diameter of the upper end of the punch should not be too large relative to the working diameter. It is enlarged by 0.5 mm on one side according to the working diameter. Through actual verification, the punching quality of the punch is guaranteed and the punch is not easy to break.

[0023] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A stamping die for a gear position sensor magnetic shaft part, the stamping die is a horizontal straight-through stamping die, and the stamping die has positioning punching, convex edge blanking, primary thinning, secondary thinning, punching through holes, edge chamfering, upper and lower material divisions from the inlet end to the outlet end. A single lead-out end of the stamping die is provided with a magnetic sleeve, and the outer side of the magnetic sleeve is pressed down and thinned with a convex outer edge, characterized in that: A punching rod is vertically arranged above the punching hole, and the punching rod is a stepped variable diameter round rod. An assembly rod head is arranged at the top of the punching rod, a rod body is arranged in the middle of the punching rod, and a punch is arranged at the bottom of the punching rod. A vertical step is arranged between the punch and the rod body, and the length of the punch is twice the sum of the thickness of the protruding outer edge and the diameter of the punch, and the diameter of the rod body is the diameter of the punch plus one millimeter.

2. A stamping die for a magnetic shaft part of a gear position sensor according to claim 1, characterized in that: The stamping die is a step-by-step multi-layer pressing die, the left end of the stamping die is provided with an inlet end, and the right end of the stamping die is provided with an outlet end. The process of the stamping die includes positioning punching, convex edge blanking, primary thinning, secondary thinning, punching through holes, edge chamfering, upper material division and lower material division.

3. The stamping die for the magnetic shaft part of the gear position sensor according to claim 1, characterized in that: The shape of the magnetic sleeve is a special-shaped ring disk, the main body of the magnetic sleeve is a sleeve ring body, the shape of the sleeve ring body is a circular ring, the outer side of the sleeve ring body is provided with a protruding outer edge, and the surface of the protruding outer edge is provided with a plurality of through holes at equal intervals in an arc shape.

4. A stamping die for a magnetic shaft part of a gear position sensor according to claim 3, characterized in that: A central sleeve hole is arranged at the center of the sleeve ring body, inner grooves are arranged in an annular manner and equidistantly in the central sleeve hole, and chamfers are arranged at the corners of the inner grooves.

5. The stamping die for the magnetic shaft part of the gear position sensor according to claim 3, characterized in that: The shape of the protruding outer edge is a fan-shaped outer edge, and a circular arc transition is provided at the connecting step between the protruding outer edge and the ring body. The upper surface of the protruding outer edge is lower than the upper surface of the ring body, and the lower surface of the protruding outer edge is flush with the lower surface of the ring body.

6. The stamping die for the magnetic shaft part of the gear position sensor according to claim 3, characterized in that: An exhaust hole is vertically penetrated through the center of the punching rod.

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