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A processing method of elastic collets for three-dimensional corner clamping pipes in a numerically controlled pipe bending machine

An elastic collet and three-dimensional technology, which is applied in the field of CNC pipe bending machining, can solve the problems of easy damage to the workpiece surface, insufficient elasticity of the elastic collet, and low service life, and achieve the effects of low cost, increased elasticity, and long life

Active Publication Date: 2016-01-13
ANHUI DEXI DHI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problem that the elastic collet processed by the existing technology has insufficient elasticity, is easy to damage the surface of the workpiece, and has a low service life, the present invention provides a processing method for a three-dimensional corner clamping collet in a numerically controlled pipe bending machine. The chuck has good elasticity, no damage to the pipe when clamping the pipe, and has a long service life

Method used

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  • A processing method of elastic collets for three-dimensional corner clamping pipes in a numerically controlled pipe bending machine
  • A processing method of elastic collets for three-dimensional corner clamping pipes in a numerically controlled pipe bending machine
  • A processing method of elastic collets for three-dimensional corner clamping pipes in a numerically controlled pipe bending machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as figure 1 , figure 2 and image 3 As shown, a processing method of a three-dimensional three-dimensional corner clamping collet in a numerically controlled pipe bending machine, the steps are:

[0043] (1) Raw material preparation for forging blank

[0044] Casting into a cylindrical forging blank, the mass percentage of forging blank components is: C: 0.50%, Mn: 0.55%, Si: 2.05%, S: ≤0.025%, P: ≤0.025%, Cr: ≤0.30%, Ni : ≤0.25%, Y 2 o 3 : 0.06%, the balance is Fe;

[0045] (2) Annealing treatment of forging blank

[0046] Annealing the forged blank obtained in step (1) through an annealing furnace, the annealing temperature is 860°C, the annealing time is 4h, and air cooling is carried out after cooling to 380°C in the annealing furnace;

[0047] (3) Initial processing of forging blanks

[0048] The forging blank in step (2) is first subjected to forging treatment, the initial forging temperature of forging is 1100-1200°C, the final forging temperature is ...

Embodiment 2

[0057] Same as Example 1, the difference is that the mass percentages of forged blank components are: C: 0.48%, Mn: 0.58%, Si: 1.93%, S: ≤0.025%, P: ≤0.025%, Cr: ≤0.30% , Ni: ≤0.25%, Y 2 o 3 : 0.07%, the balance is Fe; in the step (2), the annealing temperature is 840 ℃, and the annealing time is 5h, and air cooling is carried out after being cooled to 300 ℃ in the annealing furnace; in the step (6), the heat treatment of the collet, first Heat to 300°C and hold for 30 minutes, then heat to 530°C and hold for 60 minutes, then heat to 730°C, hold for 10 minutes, then heat to 920°C, hold for 60 minutes, first air cool to 700°C, then oil quench, then temper twice, Each tempering temperature was 470 and 495°C, respectively. The service life is 31158 times.

Embodiment 3

[0059] Same as Example 1, the difference is that the mass percentage of forging blank components is: C: 0.51%, Mn: 0.53%, Si: 2.12%, S: ≤0.025%, P: ≤0.025%, Cr: ≤0.30% , Ni: ≤0.25%, Y 2 o 3 : 0.05%, the balance is Fe; in the step (2), the annealing temperature is 870 DEG C, and the annealing time is 3h, and air cooling is carried out after being cooled to 450 DEG C in the annealing furnace; in the step (6), the heat treatment of the collet, first Heat to 420°C and hold for 20 minutes, then heat to 680°C and hold for 30 minutes, then heat to 670°C, hold for 20 minutes, then heat to 890°C, hold for 120 minutes, first air cool to 540°C, then oil quench, then temper twice, Each tempering temperature is 450 and 510°C respectively. The service life is 30073 times.

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Abstract

The invention discloses a method for machining an elastic collet for a three-dimensional corner clamping tube in a CNC tube bending machine, and belongs to the technical field of machining of CNC tube bending machines. The method comprises the steps of (1) raw material preparation of forging blank, (2) annealing treatment of the forging blank, (3) preliminary working of the forging blank, (4) cold drawing, (5) molding machining of circular-tube-shaped blank, (6) heat treatment of the elastic collet and (7) detection of the elastic collet, wherein whether the size and the number of degrees are qualified or not is detected, whether cracks exist or not is also detected, and products which can meet the size requirement and do not have the cracks are qualified. By the adoption of the method, the machined elastic collet is good in elasticity and long in service life, can be used more than 20,000 times and can prevent workpieces from being damaged and from sliding due to uneven movement when the elastic collet is used in a three-dimensional corner tube bending machine in the CNC tube bending machine.

Description

technical field [0001] The invention belongs to the technical field of numerical control pipe bending machine processing, and in particular relates to a processing method for a three-dimensional three-dimensional corner clamping elastic chuck in a numerical control pipe bending machine. Background technique [0002] With the advancement of technology and economic development, the improvement of people's living standards and the processing technology of mechanical products, the people's requirements for products are no longer just considering the practicality, but now they are more in pursuit of exquisite appearance, and the requirements for details are becoming more and more more. [0003] Especially the demand for cars, now everyone is pursuing beautiful cars, and they also pay special attention to whether the bends used in cars are beautiful, especially for the streamlined design concept, such as car bumpers, which are required to be in multiple directions Bending many ti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 吴善普吴善照
Owner ANHUI DEXI DHI TECH
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