Taper grouping mandrel with axial positioning device
A technology of axial positioning and taper, which is applied in the direction of grinding workpiece supports, etc., can solve problems such as low efficiency, inapplicability to mass production, and scrapping of parts out of tolerance, and achieve the effects of convenient operation, simple structure, and easy production
Active Publication Date: 2020-11-10
CHANGCHUN AVIATION HYDRAULIC CONTROL
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Problems solved by technology
[0003] However, in the existing mass production, due to the tolerance value of the workpiece positioning hole, the inner hole size of each workpiece is not the same; when the tapered mandrel is used for positioning and clamping, each workpiece is clamped on the mandrel. Therefore, the position is uncertain, so when grinding the side of the ring groove, it is necessary to adjust the axial position of the grinding wheel for trial cutting. This processing method is not only inefficient, but sometimes the parts are out of tolerance and scrapped due to excessive trial cutting, which is obviously not applicable for mass production
Method used
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Embodiment 1
[0044] Requirements: workpiece inner hole diameter Batch Grinding of Outer Ring Groove Requires tank width and slot location dimensions
[0045] In order to ensure the dimensions L1 and L2, a tapered grouping mandrel with an axial positioning device is designed as follows:
[0046] A taper grouping mandrel with an axial positioning device includes a mandrel body 1 and a positioning sleeve 2 . The mandrel body 1 is composed of a cylinder section 11, which is respectively a cylinder section 111, a cylinder section 112, a cylinder section 113 and a cone section 12, and the two ends of the cylinder section 111 and the cone section 12 are formed with a central hole;
[0047] One section 111 of the cylinder is used to install the clamp (the universal tool for grinding);
[0048] The positioning sleeve 2 is installed on the second section 112 of the cylinder;
[0049] The diameter D of the large end of the cone section 12 is controlled by the three cylinder sections 113;
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The invention discloses a taper grouping mandrel with an axial positioning device. The taper grouping mandrel is used for grinding a workpiece on an external cylindrical grinding machine, and comprises a mandrel body and a positioning sleeve, wherein the workpiece is arranged on a cone segment of the mandrel body in a sleeving way to achieve radial positioning and clamping of the workpiece; the positioning sleeve is fixedly arranged on a cylindrical segment of the mandrel body in a sleeving way to achieve axial positioning of the workpiece; the cylindrical segment comprises a first cylindricalsegment for mounting a clamping hook; the positioning sleeve is fixedly arranged on a second cylindrical segment in a sleeving way; the diameter of the intersecting surface of a third cylindrical segment and the cone segment is the diameter D of the large end of the cone segment; the cone segment and the cylindrical segment are integrally molded, and the diameter D of the large end of the cone segment is grouped at intervals of 0.001 mm; The taper grouping mandrel is simple in structure, and is convenient to manufacture. The positioning sleeve is additionally arranged, so that the axial positioning of the workpiece on the taper mandrel is realized, and the axial non-positioning of the conventional taper mandrel is broken through. The taper grouping mandrel is convenient to operate, is easy to guarantee the precise axial size of the workpiece, and is suitable for batch production.
Description
technical field [0001] The invention relates to the technical field of aviation technology equipment, in particular to a tapered grouping mandrel with an axial positioning device for realizing the axial and radial grinding of precision shaft sleeve parts and ensuring the axial precision position size. Background technique [0002] In the aviation field, it involves a kind of shaft sleeve parts, which have a ring groove (or shoulder) structure on the outer circular surface. This kind of structure not only requires high precision in diameter and dimension, but also has strict requirements on width dimension and axial position dimension. This type of structure needs to be ground on a precision cylindrical grinding machine with a tapered mandrel for positioning and clamping to ensure dimensional accuracy and meet technical conditions; [0003] However, in the existing mass production, due to the tolerance value of the workpiece positioning hole, the inner hole size of each workp...
Claims
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IPC IPC(8): B24B41/06
CPCB24B41/067B24B41/061
Inventor 肖飞邢天羿孟庆新孙振贵
Owner CHANGCHUN AVIATION HYDRAULIC CONTROL