Cutter length correction device and method

Abstract

The invention discloses a tool length correction device and method. Comprising a base (1), an L-shaped supporting rod (2) is fixed to the base (1), an electronic dial indicator (4) is connected to the L-shaped supporting rod (2), the end of the electronic dial indicator (4) penetrates through the L-shaped supporting rod (2) and a correction disc (3), and the electronic dial indicator (4) can slide on the L-shaped supporting rod (2). According to the invention, high-precision, high-efficiency and high-accuracy tool length correction can be realized.

Description

Technical Field

[0001] The invention relates to the technical field of numerical control technology, and in particular to a tool length correction device and method. Background Art

[0002] After curing, the surface of the domestic large aircraft radome aviation composite products has "irregular surfaces", resulting in poor uniformity and consistency of the blank allowance during CNC machining of composite materials. During CNC machining, the tool length needs to be constantly changed according to the blank allowance, resulting in low processing efficiency, short tool life, difficult operation, and easy quality problems. The traditional method of correcting the tool length is to calibrate on the product's reference surface each time, which takes about 45 minutes each time. Changing the tool length during product processing not only requires two people but also requires filling out the "Tool Length Change Table", which takes about 7 minutes each time. Sometimes, a work shift (8 hours) takes about 3 hours to calibrate the tool length alone. It is not only time-consuming, but also there is a risk of collision when calibrating on the product's reference surface because the machine head is relatively close to the product. Summary of the invention

[0003] The purpose of the present invention is to provide a tool length correction device and method. The present invention can achieve high-precision, high-efficiency and high-accuracy correction of tool length.

[0004] Technical solution: A tool length correction device includes a base, an L-shaped support rod is fixed on the base, an electronic micrometer is connected to the L-shaped support rod, the end of the electronic micrometer passes through the L-shaped support rod and the correction disc, and the electronic micrometer can slide on the L-shaped support rod.

[0005] In the aforementioned tool length correction device, the base is fixed to the side wall of the CNC machine tool via a connecting piece.

[0006] In the aforementioned tool length correction device, an alarm component is provided on the base, and the alarm component is electrically connected to the electronic micrometer.

[0007] In the aforementioned tool length correction device, the electronic micrometer is fastened to the L-shaped support rod via a fastener.

[0008] In the aforementioned tool length correction device, the correction disc is a finely ground disc with a diameter of 50 mm and a thickness of 2 MM ± 0.01.

[0009] In the aforementioned tool length correction device, the model of the electronic micrometer is ID-C112JX.

[0010] In the correction method of the tool length correction device mentioned above, during correction, the CNC machine tool tool is brought into contact with the correction disc, and the electronic micrometer digitally displays the correction value.

[0011] In the calibration method of the tool length calibration device mentioned above, when the tool error displayed by the calibration value exceeds the set value, the alarm component sounds an alarm.

[0012] Beneficial effects: The present invention is an electronic digital display tool length correction device installed on a five-axis machine tool, which effectively ensures the correctness of the tool length input by the operator to the machine tool, and realizes a high-precision, high-efficiency and high-accuracy tool length correction processing method.

[0013] The present invention avoids the situation that the operator makes mistakes when modifying the tool length and tool radius during the numerical control machining process, plays a comprehensive error prevention role, improves the utilization rate of the machine tool, and reduces the labor intensity of the operator.

[0014] The present invention completely solves the problem of "changing the length of numerical control tools" and the problem of "effectively combining numerical control tools, numerical control programs and five-axis numerical control machine tools" in five-axis numerical control machining.

[0015] The invention solves the problem that the traditional "laser tool measuring instrument" of CNC machine tools cannot measure some special tools in aviation composite materials and cannot accurately measure non-standard tools.

[0016] The invention is easy to manufacture, use and popularize.

[0017] The present invention saves about 6,000 hours of large-scale five-axis CNC machining time each year, improves machining efficiency by 10%-15%, and saves about 4 million CNC machining costs each year.

[0018] The present invention reduces the operating risk and operating intensity of personnel.

[0019] The number of operators per shift of the large five-axis CNC milling machine is reduced from 2 to 1.

[0020] The invention has low cost (only about 4,000 yuan) and strong environmental applicability (no need for constant temperature and humidity), while the traditional "laser knife measuring instrument" costs about hundreds of thousands and has high environmental requirements.

[0021] The present invention effectively solves the problem of the operator inputting the tool length confirmation of the machine tool. It is simple and easy to operate, does not require conversion, and is easy to read. It not only solves the problem of accurate correction of the tool length, with a high accuracy of up to 0.001mm. It also greatly saves time. The correction of the tool length is reduced by about 2 hours per work shift (8 hours), and 0.25 operators are reduced per work shift, achieving good quality and economic benefits.

[0022] The invention has been used in 10 five-axis CNC large gantry machine tools and has been successfully promoted and applied in batches. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is the installation position diagram of the present invention in the machine tool;

[0025] Figure 3 It is an installation state diagram of the present invention. DETAILED DESCRIPTION

[0026] Embodiment 1. A tool length correction device, see Figure 1-Figure 3 , used in conjunction with the CNC system of the machine tool, it not only realizes the automatic measurement of the CNC tool length, but also realizes the "automatic correction of the tool length by the machine tool" before "each CNC program" is run. The correction device has high correction accuracy, the accuracy can reach 0.001mm, and the digital display is intuitive; it also has an alarm component 5. If the tool error exceeds the set value, the alarm component 5 will sound an alarm and the CNC program will terminate. This device not only solves the CNC processing problem caused by poor consistency of composite blanks, but also has an error-proofing function, simple operation and high degree of automation.

[0027] The structure of the tool length correction device is as follows: Figure 1 As shown, it includes a base 1, an L-shaped support rod 2 is fixed on the base 1, an electronic micrometer 4 is connected to the L-shaped support rod 2, the end of the electronic micrometer 4 passes through the L-shaped support rod 2 and the correction disc 3, and the electronic micrometer 4 can slide on the L-shaped support rod 2. The base 1 is fixed to the side wall of the CNC machine tool through a connecting piece 6, and an alarm component 5 is installed on the base 1, which will emit a harsh sound to remind the operator when the measurement exceeds the tolerance. The L-shaped support rod 2 and the base 1 are connected and fixed to the electronic micrometer 4, and the correction disc 3 at the end of the electronic micrometer is in contact with the tool. The operator reads the display value of the electronic micrometer 4 to realize the correction of the tool length.

[0028] The model of the electronic micrometer 4 is ID-C112JX.

[0029] First, design the base 1, which is installed on the side wall of the machine tool (where there is no risk of interference and collision with the machine tool spindle) through the connector 6 (M8 bolt)

[0030] An L-shaped support rod 2 is made, and a φ10 through hole is made on the short side of the L-shaped support rod 2 for installing a needle protective shell of a digital electronic micrometer 4, and a fastener 7 (fastening screw) is used to fix the electronic micrometer 4.

[0031] The needle tip of the electronic micrometer 4 extends out of the L-shaped support rod 2, and the extension distance can be adjusted according to the maximum advance and retreat amount of the tool length. The needle tip is installed with a φ50, thickness 2MM±0.01 fine grinding disc as a correction disc 3. When the tool corrects the tool length, it contacts this correction disc 3. For example, if it is necessary to advance 10MM based on the theoretical tool length, the value displayed on the table should be -10.

[0032] When measuring the tool, enter the tool length in the machine control panel. For example: L = 210MM. When the tool contacts the calibration disc 3 and moves into place, the displayed value should be 0 ± 0.015, and an electrical signal is sent to the machine control panel for tolerance comparison. If the tolerance is exceeded, the alarm component 5 will sound an alarm and automatically stop the processing program.

Claims

1. A tool length correction device, characterized in that: The invention comprises a base (1), an L-shaped support rod (2) is fixed on the base (1), an electronic micrometer (4) is connected to the L-shaped support rod (2), an end of the electronic micrometer (4) passes through the L-shaped support rod (2) and a calibration disc (3), and the electronic micrometer (4) can slide on the L-shaped support rod (2).

2. The tool length correction device according to claim 1, characterized in that: The base (1) is fixed on the side wall of the CNC machine tool via a connecting piece (6).

3. The tool length correction device according to claim 1, characterized in that: The base (1) is provided with an alarm component (5), and the alarm component (5) is electrically connected to the electronic micrometer (4).

4. The tool length correction device according to claim 1, characterized in that: The electronic micrometer (4) is fastened to the L-shaped support rod (2) via a fastener (7).

5. The tool length correction device according to claim 1, characterized in that: The calibration disc (3) is a finely ground disc with a diameter of 50 mm and a thickness of 2 mm ± 0.

01.

6. The tool length correction device according to claim 1, characterized in that: The model of the electronic micrometer (4) is ID-C112JX.

7. A method for correcting a tool length correction device according to any one of claims 1 to 6, characterized in that: During calibration, the CNC machine tool tool is brought into contact with the calibration disc (3), and the electronic micrometer (4) digitally displays the calibration value.

8. The correction method of the tool length correction device according to claim 7, characterized in that: When the tool error displayed by the correction value exceeds the set value, the alarm component (5) alarms.

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