Machining method for improving coaxiality accuracy of opposite holes of part

A processing method and coaxiality technology, which is applied in the direction of metal processing equipment, metal processing machine parts, manufacturing tools, etc., can solve the problem that the comprehensive error cannot meet the processing needs, the hole error of the other side is processed, and two holes cannot be bored on one side. Holes and other problems, to achieve the effect of simple and convenient processing method, improve processing accuracy, and improve processing accuracy

Active Publication Date: 2016-10-12
BEIJING INST OF AEROSPACE CONTROL DEVICES
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  • Description
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Problems solved by technology

When the error of the disc or the frame is not strictly located in the center of the disc, a large error will occur when machining the hole on the other side
Sometimes it is not possible to bore two holes on one side due to the rigidity of the part or the spindle boring tool
If the movement of the disc is added, the comprehensive error cannot meet the processing needs

Method used

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  • Machining method for improving coaxiality accuracy of opposite holes of part
  • Machining method for improving coaxiality accuracy of opposite holes of part
  • Machining method for improving coaxiality accuracy of opposite holes of part

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Embodiment 1

[0051] Such as figure 1 , 2 As shown, in the present embodiment, the part 10 to be processed is a frame structure, and the pressing plate assembly, the equal height block 6 and the spacer 7 are four, and the materials of the equal height block 6 and the spacer 7 are all chrome-manganese steel, and the calibration assembly The material is quenched stainless steel.

[0052] The four pads 7 are located symmetrically on the workbench 11, the positions of the four platen assemblies and the four equal-height blocks 6 correspond to the positions of the four pads 7, and they are symmetrically located on the workbench 11, wherein the height of the pads 7 is 150mm, The height of the equal height block 6 is 242mm, the height of the calibration assembly is 310mm, the height of the part 10 to be processed is 92mm, and a circular hole is respectively processed on the four side walls of the part 10 to be processed.

[0053] The processing accuracy of the parts in this embodiment is improve...

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Abstract

The invention relates to a machining method for improving the coaxiality accuracy of opposite holes of a part. A special error correction tool is designed, the part to be machined is installed on a work table of a numerically-controlled machine tool through the error correction tool, a measuring head measures the position relations between a spherical displacer and a main shaft of the machine tool and between the spherical displacer and the rotational axis of the work table for obtaining the reference positions of vertical machining and horizontal machining of the part, and therefore the machining accuracy of vertical machining and horizontal machining is obviously improved. The error correction tool comprises a calibration assembly, pressing plate assemblies, equal-height blocks and cushion blocks. According to the machining method, kinematic errors of shafts of the numerically-controlled machine tool are eliminated to the maximum degree, the coaxiality of the opposite holes of the part is only related with the alignment accuracy, and the accuracy of the part to be machined is obviously improved.

Description

technical field [0001] The invention relates to a processing method for improving the coaxiality accuracy of parts relative to holes, and belongs to the technical field of numerical control processing. Background technique [0002] CNC machine tools process frame parts. In order to ensure that the holes on each side wall are coaxial, the horizontal processing method is generally used to complete the boring process on one side, and then process the holes on each side by rotating the disc. When the error of the disc or the frame is not strictly located in the center of the disc, a large error will occur when machining the hole on the other side. Sometimes it is not possible to bore two holes on one side due to the rigidity of the part or the spindle boring tool. If the movement of the disc is added, the comprehensive error cannot meet the processing needs. At this time, a transition datum can be selected, and the error can be eliminated by finding the transition datum, but h...

Claims

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Application Information

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IPC IPC(8): B23Q3/06B23Q3/10B23Q17/22
CPCB23Q3/06B23Q3/10B23Q17/2291
Inventor 李峰李洪文钟燕
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES
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