Non-contact online measuring device and method for turned workpiece
A non-contact, measuring device technology, applied in the direction of measuring/indicating equipment, metal processing machinery parts, manufacturing tools, etc., can solve the problems of poor detection accuracy, slow detection process, low measurement accuracy, etc., to avoid secondary clamping error, increase the rotation speed, and ensure the effect of machining accuracy
Inactive Publication Date: 2017-05-31
HUAQIAO UNIVERSITY
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Some published patents have disclosed online measurement methods for workpieces, such as the patent "On-line inspection system and inspection method for machining accuracy of CNC lathes (201210266131.5)" and "On-line inspection method for machining accuracy of complex parts (201210266355.6)". The contact measurement method is used, the detection process is slow, the detection accuracy is poor, and a complex system is required to generate the measurement CNC code
The patent "Laser Measurement System for Online Measurement (201220420026.8)" proposes to use non-contact laser measurement instead of mechanical contact measurement. However, the published measurement system can only measure flat floor notches online, and cannot measure the three-dimensional surface of the workpiece appearance
The patent "on-line imaging detection device and online imaging detection method for machining accuracy of inner and outer walls of cylinders (200610155870.1)" can only simply measure the cylindrical surface because it is not equipped with a precise driving measurement device and a device that moves relative to the measured object when measuring the inner and outer circles. Complex surfaces cannot be measured, and the measurement accuracy is not high
The patent "On-line detection tool for machining accuracy of circumferential dovetail tenon groove (201420560912.X)" can detect the machining accuracy of dovetail groove online, but this method can only detect the structure of dovetail groove, and adopts contact measurement at the same time, the measurement accuracy low
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[0044] Below by embodiment the content of the present invention is specified:
[0045] Please check figure 1 , a non-contact online measuring device for turning workpieces, comprising:
[0046] machine tool;
[0047] Spindle 1, mounted on the machine tool;
[0048] The chuck 2 is mounted on the main shaft 1 and can be driven to rotate by the main shaft 1;
[0049] The workpiece 4 is mounted on the chuck 2 and can be rotated by the chuck 2, and the rotation axis of the workpiece 4 is along the first direction (ie figure 1 Z-axis direction) arrangement;
[0050] The guide rail 3 is arranged along the Z-axis direction and installed on the machine tool;
[0051] The position adjustment mechanism is the middle slide plate 8, which is slidably attached to the guide rail 3 and can slide back and forth along the Z-axis direction on the guide rail 3;
[0052] The tool rest 6 is attached to the middle slide plate 8 and can pass through the middle slide plate 8 in the second direct...
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The invention discloses a non-contact on-line measuring device and method for a turned workpiece. The device comprises a machine tool and a main shaft; the workpiece is driven by the main shaft to rotate through a chuck; a guide rail arranged in the first direction is arranged on the machine tool; a position adjusting mechanism is connected to the guide rail in a sliding mode; a knife rest slides in the second direction through the position adjusting mechanism; a laser displacement sensor is arranged on the knife rest; and the laser emission direction of the laser displacement sensor is opposite to that of the workpiece. According to the non-contact on-line measuring device and method for the turned workpiece, the workpiece is driven by the main shaft to rotate, and the laser displacement sensor scans the points on the side surface and / or end surface of the workpiece, collects the position data, and processes the data to obtain a 3D digital model of the workpiece. The non-contact on-line measuring device and method for the turned workpiece is based on the high-precision laser displacement sensor, the linear motion of the laser displacement sensor and the rotary motion of the workpiece are combined, and therefore the size error, the shape error, the position error and the like of the geometric features of the workpiece to be measured can be rapidly measured online, the on-line detection range in the turning process can be expanded, and the measuring precision can be high.
Description
technical field [0001] The invention belongs to the field of non-contact online precision measurement, in particular to a non-contact online measurement device and method for turning workpieces. Background technique [0002] In turning processing, the workpiece needs to be measured frequently. At present, there are mainly two methods of off-line measurement and on-line measurement to complete the detection of the workpiece. If the off-line measurement method is used in the processing, not only the time loss will be caused by the shutdown detection, but also the secondary positioning error will inevitably occur after unloading the workpiece for measurement, which will have an impact on the processing of high-precision workpieces. One of the main reasons for workpiece quality. [0003] On-line measurement refers to measuring the workpiece without disassembling the workpiece during the processing, and making corresponding processing according to the detection results. At pres...
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IPC IPC(8): B23Q17/20B23Q17/24
CPCB23Q17/20B23Q17/2471
Inventor 姜峰张涛
Owner HUAQIAO UNIVERSITY