A plastic forming method for spherical hexagonal bolts

A plastic forming and hexagonal bolt technology, applied in the field of parts processing technology, can solve the problems of small range of processing materials, affecting product quality, products with burrs, etc., to achieve the effect of saving materials, excellent smooth quality, and simple process

Active Publication Date: 2018-11-02
丽水市知源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But its disadvantages are: the process is more complicated, there is still room for improvement in material utilization, the range of processed materials is small, and the product has burrs, which affect product quality

Method used

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  • A plastic forming method for spherical hexagonal bolts
  • A plastic forming method for spherical hexagonal bolts
  • A plastic forming method for spherical hexagonal bolts

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Experimental program
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Effect test

Embodiment Construction

[0035] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0036] Such as Figure 1-13 As shown, the plastic forming method of the spherical hexagonal bolt in this embodiment is carried out in the following steps:

[0037] Step 1: Extrude the part blank into the bottom mold through the first stamping die 1, so that the bottom of the blank is chamfered and shaped to obtain the required dimensions for the taper of the tail and the upsetting of the stem.

[0038] Step 2: Extrude the part 2 processed in step 1 through the second stamping die 3 to obtain the preform of the head of the part and reduce the diameter of the stem to the required size.

[0039]Step 3: Extrude the head of the part 2 processed in step 2 to the spherical surface through the third stamping die 4, upsetting the thick rod, and reducing the diameter of the thin rod to the required size.

[0040] Step 4, use the fourth stamping die 5...

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Abstract

The invention discloses a plastic molding method of a spherical hexagon bolt. The method comprises the following steps: step one, extruding a part blank via a first punching die (1) to obtain the required size of a tail chamfer and a rod; step 2, extruding a part (2) processed in the step one via a second punching die (3) to obtain a head, performing the head and shrinking the head to the required size; step three, extruding the part (2) processed in the step two via a third punching die (4) to obtain a spherical head and the rod, upsetting the rod, and shrinking the thin rod to the required size; and step four, extruding the part (2) processed in the step three via a fourth punching die (5) and obtaining the requirements on the shape and the size of the final product. The method is simple in process; the die is capable of processing and molding the part by just placing the part in an assigned position; the effect is immediately visible; the adjustability is high; the rejection rate is reduced; and the cost is further reduced.

Description

technical field [0001] The invention belongs to the technical field of parts processing technology, and in particular relates to an effective cold heading processing method for spherical hexagonal bolts. Background technique [0002] Chinese patent application No. 201110341854.2 discloses a cold heading forming process for titanium alloy fasteners. It first selects the titanium material in the coil annealed state with a Brinell hardness less than 100. When drawing, it adopts a small-pass process, that is, each time The deformation after annealing increases by one pass, and the processing amount of each pass is 50% of the processing amount of the previous pass; the drawn coil material is sent to a high-strength multi-station cold heading machine, and passes through at least two cold headings Formed, and the deformation of each cold heading does not exceed 50%. The application of the inventive process can improve work efficiency by 10-15 times, reduce material utilization by ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21K1/50B21J13/02B21J5/08
CPCB21J5/08B21J13/02B21K1/50
Inventor 王循明吴栋滨
Owner 丽水市知源科技有限公司
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