Method for processing center frame of equal height triangle sleeve barrel structure and triangle sleeve barrel

A processing method and the technology of the center rest, which are applied in metal processing equipment, manufacturing tools, machine tools designed for grinding the rotating surface of workpieces, etc. problems, to achieve the effect of ensuring stability, dynamic rigidity, and reliable locking

Inactive Publication Date: 2008-05-28
北京机电院机床有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The height of the contact support point changes due to twisting, which causes the drift of the support center of the part, which not only makes it difficult to adjust at the μm level, but also reduces the stability of the grinding accuracy after adjustment and locking
[0005] 3. Because most of the adjustment screw of the center frame sliding sleeve adopts a large pitch, the thread gap is not eliminated
According to the proce...

Method used

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  • Method for processing center frame of equal height triangle sleeve barrel structure and triangle sleeve barrel
  • Method for processing center frame of equal height triangle sleeve barrel structure and triangle sleeve barrel
  • Method for processing center frame of equal height triangle sleeve barrel structure and triangle sleeve barrel

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Experimental program
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Effect test

Embodiment 1

[0028] Embodiment 1: As shown in Figure 1, a precision center frame with a triangular sleeve structure of equal height, including: a center frame base 1, a center frame upper body 2, a flange plate 3, a lead screw 4, a triangular sleeve 5, Hand wheel 6, shaft 7, positioning pin 8, pull rod 9, lock nut 10, pin shaft 11, handle 12, eccentric tight rod 13, tight block 14, gland 15, top column 16,

[0029] The base 1 of the center frame and the upper body 2 of the center frame are equipped with three groups of equal-height triangular sleeve 5 mechanisms, which are distributed at 120° to each other. The triangular sleeve 5 coordinates with the center frame base 1 and the center frame upper body 2 respectively with three corresponding 60° grooves scraped into position, and is pressed by three glands 15 respectively. The three flanges 3 fixed on the base 1 of the center frame and the upper body 2 of the center frame can realize the radial positioning of the three sets of micrometer s...

Embodiment 2

[0030] Embodiment 2: a kind of processing method of contour triangular sleeve, containing step is:

[0031] (1) Design and manufacture of debugging rods: as shown in Figure 2, except for the A, B, and C surfaces with an included angle of 60°, the other debugging rods are exactly the same as in Figure 4, as shown in the figure: the center of both ends The hole must be carefully drilled, and it should be ring-shaped in contact with the front and rear tops of the cylindrical grinder without gaps. Otherwise, the roundness and cylindricity of the outer circle can not meet the requirements.

[0032] (2) Trial grinding with a debugging rod, and adjust the cylindrical grinding machine to be used: use the debugging rod with a well-ground center hole to grind the outer circle on the cylindrical grinding machine to be used, and adjust the machine tool to make the roundness of the outer circle to be ground Both the cylindricity and cylindricity meet the requirements of less than 1 μm. A...

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Abstract

The invention relates to a processing method of a central frame and a triangle sleeve of an equal-height triangle sleeve. The invention includes the steps: (1) a debugging bar is designed and manufactured; (2) the debugging bar is used for a grinding trial to regulate a cylindrical grinder for use; (3) a machine tool is regulated by the debugging bar to be a standard external grinding required by the grinding of the triangle sleeve; (4) three guide faces of the triangle sleeve which have a 60 degree angle with each other are respectively grinded out through three-time positioning on a 60-degree clamp on a electromagnetic absorbing disk of a plane grinder; (5) a mutual parallel degree between three faces is detected and is less than 0.003mm. The invention has beneficial effects that the structure loading contact area of the equal-height triangle sleeve is big; the loading capability is strong and the guide accuracy is high. No distortion happens to the moving direction of the triangle sleeve under the effect of forces from any direction. Not only a fact that a wear-resistant PTFE support face fixed at the front end of the triangle sleeve contacts the supported external circularity on one generatrix can be guaranteed, but also the structural central frame of the equal-height triangle sleeve is convenient for repairing.

Description

technical field [0001] This patent relates to a novel center frame with a triangular sleeve structure of equal height and a processing method for a high-precision triangular sleeve. The new contoured triangular sleeve structure can be expanded and applied to other fields such as tailstock in machine tools. Background technique [0002] All kinds of medium-sized precision internal grinding machines at home and abroad are equipped with the traditional circular sleeve center frame, and there are the following technical problems: [0003] 1. There must be a gap for the circular sleeve to move sensitively. Even if the screw is used to lock it radially, its contact is still a busbar contact in the axial direction in principle. After locking, due to the existence of the gap, not only the support rigidity is affected , and there will be slight shaking during the grinding process, which will affect the high-precision grinding quality of the inner hole. [0004] 2. The guide and loc...

Claims

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Application Information

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IPC IPC(8): B24B5/06
Inventor 孙刚束京王超颖
Owner 北京机电院机床有限公司
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