The traditional measuring and tool setting method

2022-08-07
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Differences between traditional measurement and tool setting methods for NC machining and special tool measurement and tool setting methods

I Difference between traditional measurement method and measurement method with machine tool probe

1 The traditional measurement method refers to the measurement with traditional measurement tools (such as dial indicator, centering table, caliper, etc.). It belongs to relative measurement. Because its measurement benchmark is the machined surface, rather than the direct spindle benchmark, it is an excessive benchmark. In addition, the precision of the traditional measurement tools is not high, and the random error of human measurement operation is large, these factors lead to inaccurate measurement results; On the other hand, the traditional measuring tools have small measuring range, and the size and shape of the measured workpiece are limited. Many measuring tasks (such as large size and complex shape) can not be completed with traditional measuring tools, and they occupy a long time, which affects the function of the machine tool

2. The measurement with the three-dimensional probe of EP (TP) special machine tool belongs to direct measurement. Its positioning benchmark is the taper hole of the spindle. After the probe is installed on the machine tool, it is equivalent to a manual three-dimensional measuring machine, and the travel of the spindle of the machine tool is the measuring range of the probe. It is not limited by the size and shape of the workpiece, and can complete almost all the measurement work (such as positioning measurement of tooling, measurement of dimensional accuracy of parts, measurement of geometric tolerance, etc.). Compared with the traditional measurement method, it has the following outstanding advantages:

1) high measurement accuracy: it does not need to accumulate experience, and it can be completed by simply operating according to simple procedures; During measurement, the probe has an audible and visual prompt, and the measurement point coordinates are digitally displayed on the CRT of the machine tool accurately and intuitively, which can avoid the measurement error caused by man. At the same time, the reset accuracy of the EP (TP) three-dimensional probe itself is very high (μ M). In conclusion, the special probe of the EP (TP) machine tool can be used to solve the problem of workpiece measurement on the machine with high accuracy

2) high measurement efficiency: a point can be measured in 40 seconds after several times of proficient measurement, and the center of a hole can be determined within 2 minutes, which can save at least 2/3 of the machine time compared with traditional tool measurement, and complete the measurement work more efficiently

3) good safety: EP (TP) three-dimensional probe is set with large over protection stroke in the X, y and Z directions, which can ensure a high service life under the normal operation and maintenance of the probe

in a word, this special probe for machine tools can simplify the complex measurement work guaranteed by experience, and ensure the exertion of the high-efficiency and high-precision characteristics of NC machine tools. It has become an indispensable special tool for solving workpiece measurement on NC machining machines

II The difference between the traditional tool setting method and the special tool setting device tool setting method

1. the traditional tool setting method is to use feeler gauge, feeler gauge, paper, etc., or to use the methods of cutting and trial cutting for many times, which has poor safety (for example, if the feeler gauge is used for tool setting, the tool tip is easy to be damaged when it is hard); The machine is occupied for a long time (for example, the trial cutting needs to be repeated for several times); The artificial random error and other shortcomings can not adapt to the rhythm of NC machining, and it is not conducive to give full play to the functions of NC machine tools

the most important thing for the future manufacturing industry is to realize the efficient utilization of resources and energy and minimize the damage to the ecological environment. 2. using etc series on-board special electronic tool setter for tool setting has the following advantages:

1) high tool setting accuracy: tool setting can be completed without accumulating experience and only by operating according to simple procedures; There are sound and light prompts during tool setting. The tool setting point coordinates are digitally displayed on the CRT of the machine tool accurately and intuitively, which can avoid the measurement error caused by man. At the same time, the reset accuracy of etc series electronic tool setting device itself is very high (μ m). In conclusion, the etc series special tool setting device can be used to eliminate some low-grade fertilizer products such as calcium superphosphate and carbamide with high precision and initiative to solve the problem of tool setting on the machine

2) high tool setting efficiency: after several times of skilled tool setting, it only takes 35 seconds to set the z-direction tool length; It takes only 3 minutes for complicated boring tool setting (radial tool setting of X and Y axes), which can save at least 2/3 of the machine time compared with traditional tool setting, and complete the tool setting work with high efficiency

3) good safety: if the design of the components produced by etc allows the series of electronic tool setters to set a large over protection stroke, it can ensure that the tool tip and the tool setting surface of the tool setter are free from impact damage, and can ensure a high service life under the normal operation and maintenance of the tool setter. In short, this special tool setting device for machine tools can simplify the tedious tool setting work guaranteed by experience, ensure the high-efficiency and high-precision characteristics of CNC machine tools, and has become an indispensable special tool for solving tool setting on CNC machine tools. (end)

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