A kind of forging method of tapered stepped shaft

A technology of tapered steps and stepped shafts is applied in the manufacture of tools, forging/pressing/hammer devices, forging/pressing/hammering machines, etc. Simple, low stress, and the effect of saving the use of raw materials

Active Publication Date: 2022-01-11
SINOSTEEL XINGTAI MACHINERY & MILL ROLL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also molds for forging, but the cost of mold making is high and the versatility is poor. Even forgings with the same taper and different diameters cannot be used.

Method used

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  • A kind of forging method of tapered stepped shaft
  • A kind of forging method of tapered stepped shaft
  • A kind of forging method of tapered stepped shaft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The embodiment is a forged structure such as figure 2 The tapered step axis shown, where Φ1=700mm, Φ2=340mm, α=8°. The production steps are as follows:

[0036] Step 1, make as figure 1 Shown with beveled upper and lower anvils, the upper and lower anvils are the same size. The anvil width B=600mm, b1=300mm, b2=300mm, α=8°. During use, the upper and lower anvils are used in pairs, and the inclined planes are positioned on the same side.

[0037] Step 2, place the blank between the upper flat anvil and the lower flat anvil, with the slope facing the blank. Sequentially pull out from the end inward, that is, press image 3 From the left end to the right, the length is drawn from the left end to the right, the amount of anvil entry is 300mm, and the amount of reduction is 45mm. The first pass is drawn to the initial position of the cone surface, and the second pass is drawn to the position of the cone surface formed in the previous pass. According to this rule, the t...

Embodiment 2

[0040] The embodiment is a forged structure such as figure 2 The tapered step axis shown, where Φ1=1200mm, Φ2=340mm, α=9°. The production steps are as follows:

[0041] Step 1, make as figure 1 Shown with beveled upper and lower anvils, the upper and lower anvils are the same size. The anvil width B=1000mm, b1=550mm, b2=450mm, α=9°. During use, the upper and lower anvils are used in pairs, and the inclined planes are positioned on the same side.

[0042] Step 2, place the blank between the upper flat anvil and the lower flat anvil, with the slope facing the blank. Sequentially pull out from the end inward, that is, press image 3 From the left end to the right, the length is drawn from the left end to the right, the amount of anvil entry is 550mm, and the amount of reduction is 85mm. The first pass is drawn to the initial position of the cone surface, and the second pass is drawn to the position of the cone surface formed in the previous pass. According to this rule, the...

Embodiment 3

[0045] The embodiment is a forged structure such as figure 2 The tapered step axis shown, where Φ1=860mm, Φ2=360mm, α=7°. The production steps are as follows:

[0046] Step 1, make as figure 1 Shown with beveled upper and lower anvils, the upper and lower anvils are the same size. Among them, the anvil width B=800mm, b1=380mm, b2=420mm, α=7°. During use, the upper and lower anvils are used in pairs, and the inclined planes are positioned on the same side.

[0047] Step 2, place the blank between the upper flat anvil and the lower flat anvil, with the slope facing the blank. Sequentially pull out from the end inward, that is, press image 3 From the left end to the right, the length is drawn from the left end to the right, the amount of anvil entry is 380mm, and the amount of reduction is 50mm. The first pass is drawn to the initial position of the cone surface, and the second pass is drawn to the position of the cone surface formed by the previous pass. According to this...

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Abstract

The invention relates to a forging method of a tapered stepped shaft, which belongs to the technical field of free forging. The method comprises the following steps: Step 1, making an upper flat anvil and a lower flat anvil with inclined surfaces, and the inclined surfaces of the upper flat anvil and the lower flat anvil are located on the same side, and the slope of the inclined surfaces matches the taper of the step axis; Step 2, when forging, the blank Placed between the upper flat anvil and the lower flat anvil, the slopes of the upper flat anvil and the lower flat anvil face one side of the blank, and they are drawn sequentially from one end of the blank to the other end; step 3, after the forging of the tapered section is completed, forge the straight section, and the blank Turn around and place between the upper flat anvil and the lower flat anvil to elongate the blanks sequentially. According to the forging method of the tapered stepped shaft of the present invention, the produced tapered stepped shaft can greatly save the use of raw materials, reduce the subsequent cutting process, and have continuous forging streamlines, so that the performance of the forging is improved. The method has simple tools, good versatility and convenient operation, and can effectively reduce raw material costs, production costs and tool manufacturing costs.

Description

technical field [0001] The invention relates to a forging method of a tapered stepped shaft, which belongs to the technical field of free forging. Background technique [0002] The current free forging method of the stepped shaft containing the tapered section generally divides the tapered section of the stepped shaft into several small length sections on average, and then forges according to the straight platform. However, the forging process of this method is cumbersome and takes a long time, and only approximate taper can be forged, and a large amount of mechanical processing is required in the follow-up, resulting in waste of raw materials. Machining will cut off the forging streamline and reduce the performance of the forging. There are also molds for forging, but the cost of mold making is high and the versatility is poor. Even forgings with the same taper and different diameters cannot be used. Contents of the invention [0003] The object of the present invention...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J13/06B21J5/06
CPCB21J13/06B21J5/06
Inventor 李周王永军
Owner SINOSTEEL XINGTAI MACHINERY & MILL ROLL
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