Compensation mechanism of finish boring hole cylindricity error

A technology of cylindricity error and compensation mechanism, which is applied in the direction of boring/drilling, boring head, drilling/drilling equipment, etc. It can solve problems such as inconsistent dimensions, affecting machine assembly accuracy, and different assembly performance, so as to shorten the length , Increase rigidity, reduce the effect of error re-reflection

Inactive Publication Date: 2009-06-10
JIANGSU GAOJING MECHANICAL & ELECTRICAL EQUIPMENT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the general CNC system, manual compensation commands are set. The tool wear compensation is to set the compensation amount manually through the out-of-line inspection of the workpiece and the empirical judgment of the tool wear. This compensation will have obvi

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  • Compensation mechanism of finish boring hole cylindricity error

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Embodiment Construction

[0008] The figure shows that the push-pull boring bar goes down for semi-finish boring to the final position. In the figure, the front end of the push-pull boring bar (1) is equipped with semi-finish boring inserts (2) and fine boring inserts (5), and the boring bar (1) goes down. When the workpiece (7) can be subjected to fast semi-finish boring processing, when the boring bar (1) semi-finishing goes down to the final position, the tool compensation servo motor (9) starts when the boring bar (1) goes up, through the boring bar ( 1) The 1° slope of the tie rod (3) at the core pushes the ball stud (6) to elastically extend the fine boring tool table (4), and the fine boring tool (5) extends to the working position of the fine boring size to complete the workpiece In the final fine boring process of (7), the power head and the spindle box (8) complete the upward, downward and cutting movements of the push-pull boring tool bar, and the tool compensation servo motor (9) can perform...

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Abstract

The invention provides a compensation mechanism for the cylindricity errors of fine-bored holes. As the radial wall thickness in the axis direction of an engine cylinder hole is not uniform in distribution, after the engine cylinder hole is linearly bored by a conventional machining method, the cylindricity of the hole is in a waist-drum shape. Parameters of an inverse waist-drum shape are input into a numerical control program after measurement, analysis and calculation. The cylinder hole is subjected to coaxial graded semi-fine boring and fine boring by pushing and pulling a boring bar, and rapid semi-fine boring can be carried out to the cylinder when the boring bar goes down. When the boring bar 1 goes up, a compensation servo motor 9 is started, the expansion amount of a pull rod 3 on the core part of the boring bar is accurately positioned and controlled through the servo motor; a 1-degree inclined plane on the pull rod 3 pushes a fine-boring cutter table 4 to elastically stretch out so as to enable a fine boring cutter 5 to be in a working position of fine boring size; and the fine boring cutter completes the final fine boring of the cylinder hole according to a parameter program of the inverse waist-drum shape, so that the cylindricity of the cylinder hole is effectively improved. Through the setting of the program, the side generatrix of the fine-bored holes can be a curved line or an irregular straight line by programming.

Description

Technical field [0001] The utility model relates to a compensation mechanism for the cylindricity error of a fine boring hole. In the boring process of the engine cylinder hole, a push-pull boring bar is used to coaxially divide the fine boring and semi-finish boring, and cooperate with the servo compensation method to ensure the accuracy of the boring. Cylindricity technical requirements for cutting holes. Background technique [0002] The cylindricity requirement of the engine cylinder bore is relatively high, due to the uneven distribution of the radial wall thickness in the axial direction of the engine cylinder bore. The upper and lower ends of the axis of the hole are thicker, and the middle part is thinner. During the boring process, the tool retreats due to insufficient rigidity of the boring bar. The cylindricity of the hole is not high. The rigidity of the process system is increased, but limited by the technical conditions of the hole, it cannot completely solve...

Claims

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Application Information

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IPC IPC(8): B23B41/00B23B41/12B23B29/03B23Q15/013
Inventor 朱效波
Owner JIANGSU GAOJING MECHANICAL & ELECTRICAL EQUIPMENT CO LTD
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