CN109623485B - Length compensation system and method for numerical control machine tool cutter - Google Patents
Length compensation system and method for numerical control machine tool cutter Download PDFInfo
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- CN109623485B CN109623485B CN201910066109.8A CN201910066109A CN109623485B CN 109623485 B CN109623485 B CN 109623485B CN 201910066109 A CN201910066109 A CN 201910066109A CN 109623485 B CN109623485 B CN 109623485B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
- B23Q15/16—Compensation for wear of the tool
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Abstract
The invention discloses a length compensation system and a method for a cutter of a numerical control machine tool, wherein the radius of the cutter to be measured and the measured diameter of a tool setting gauge are compared, when the radius of the cutter to be measured is larger than the measured diameter of the tool setting gauge, the tool setting gauge is controlled to deviate for a certain distance, so that the tool tip of the cutter to be measured is aligned to the center of the tool setting gauge, the cutter to be measured can be effectively contacted with the tool setting gauge, the compatibility of the system is improved, then the control system can calculate a compensation value according to the Z-axis coordinate of a standard cutter and the Z-axis coordinate of the cutter to be measured, and length compensation is carried out on the cutter according to the compensation value, so that the processing quality is ensured.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a length compensation system and method for a cutter of a numerical control machine tool.
Background
In a numerical control machine tool, a plurality of cutters are often equipped, the lengths of the cutters are different, the cutters can be worn to different degrees in the use process, when the cutters with different specifications are used or worn, the lengths of the cutters need to be compensated, and therefore the cutters need to be measured and compensated by using a tool setting gauge, but some existing numerical control machine tools have the problem that the cutters cannot be measured due to the fact that compensation surfaces are too large, and therefore a length compensation method suitable for the cutters with various diameters is needed.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a system and a method for compensating the length of a tool of a numerical control machine tool, which can be applied to the measurement and length compensation of a large-sized tool head tool, and improve the compatibility of the system.
The technical scheme adopted by the invention for solving the problems is as follows:
a length compensation system for a cutting tool of a numerical control machine tool, comprising:
the main shaft is used for installing a cutter;
the tool setting gauge is used for providing a measuring signal when the tool setting gauge touches the tool;
the control system stores length data and radius data of the cutter, and measures and stores coordinate values when the cutter is contacted with the tool setting gauge;
the tool setting instrument provides a measuring signal to the control system when contacting with a tool on the main shaft, the control system measures and stores coordinate values of the tool, the control system calculates a compensation value according to the coordinate values of the standard tool and the tool to be measured, and the control system moves the main shaft and the tool on the main shaft according to the compensation value to process a workpiece; and when the control system judges that the radius of the tool to be measured is larger than the measured diameter of the tool setting gauge, the control system controls the tool setting gauge to deviate and then enables the tool to be measured to touch the tool setting gauge.
Further, the tool setting gauge is a contact type tool setting gauge.
Further, the tool setting gauge comprises a contact surface, and the spindle controls the tool to move to touch the contact surface.
Further, still include the actuating mechanism that is used for driving tool setting appearance to remove, control system control actuating mechanism drives tool setting appearance.
A length compensation method for a cutter of a numerical control machine tool comprises the following steps:
the main shaft moves the standard cutter above the cutter setting instrument, and the control system measures and obtains a Z-axis coordinate value of the standard cutter;
the control system compares the radius of the tool to be measured with the measured diameter of the tool setting gauge, if the radius of the tool to be measured is not larger than the measured diameter of the tool setting gauge, the tool to be measured is contacted with the tool setting gauge, otherwise, the control system controls the tool setting gauge to be contacted with the tool to be measured after the tool setting gauge deflects on the X axis;
when the tool to be measured touches the tool setting gauge, the control system measures and obtains a Z-axis coordinate value of the tool to be measured;
the control system obtains a compensation value of the length of the tool to be measured according to the Z-axis coordinate value of the standard tool and the Z-axis coordinate value of the tool to be measured;
and the control system performs length compensation according to the compensation value of the length of the cutter to be measured.
Further, before the main shaft moves the standard cutter to the position above the cutter setting gauge, the control system firstly measures and obtains X, Y axis coordinates of the cutter setting gauge.
Further, the control system stores radius data and length data of the cutter in advance, and the control system takes the cutter with the minimum length as a standard cutter according to the length data.
Further, when the radius of the tool to be measured is larger than the measurement diameter of the tool setting gauge, the control system controls the offset distance of the tool setting gauge on the X axis to be the measurement radius of the tool setting gauge.
Further, the calculation formula of the compensation value of the length of the cutter to be measured is as follows:
L＝|A-B+C|；
wherein A is the Z-axis coordinate value of the tool to be measured, B is the Z-axis coordinate value of the standard tool, and C is the length of the standard tool.
The invention has the beneficial effects that: according to the length compensation system of the cutter of the numerical control machine tool, the control system records the current coordinate value according to the measurement signal generated when the tool setting gauge touches the main shaft, the compensation value of the cutter to be measured can be obtained through calculation according to the coordinate values of the cutter to be measured and the standard cutter, so that compensation can be carried out, the control system can also judge whether the radius of the cutter to be measured is larger than the measurement diameter of the tool setting gauge, when the radius of the cutter to be measured is larger than the measurement diameter of the tool setting gauge, the tool setting gauge is deviated, so that the cutter to be measured can effectively touch the tool setting gauge, and the problem that a large cutter is incompatible is solved;
according to the length compensation method of the numerical control machine tool, the radius of the tool to be measured is compared with the measured diameter of the tool setting gauge, when the radius of the tool to be measured is larger than the measured diameter of the tool setting gauge, the tool setting gauge is controlled to be offset by a certain distance, the tool to be measured can be in contact with the tool setting gauge, compatibility is improved, meanwhile, compensation values are calculated through Z-axis coordinate values of the tool to be measured and a standard tool, the tool to be measured can be effectively compensated, and machining quality of the machine tool is guaranteed.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of a length compensation system of a numerically-controlled machine tool according to the present invention;
fig. 2 is a flow chart of a length compensation method of a numerical control machine tool according to the present invention.
Detailed Description
Referring to fig. 1, the length compensation system for the cutting tool of the numerical control machine tool of the invention comprises:
a main shaft 1 for mounting a tool;
the tool setting gauge 2 is used for providing a measuring signal when the tool setting gauge touches the tool;
the control system 3 stores the length data and the radius data of the cutter, and measures and stores coordinate values when the cutter is contacted with the tool setting gauge 2;
the tool setting gauge 2 provides a measuring signal to the control system 3 when touching with a tool on the main shaft 1, the control system 3 measures and stores coordinate values of the tool, the control system 3 calculates a compensation value according to the coordinate values of the standard tool and the tool to be measured, and the control system 3 moves the main shaft 1 and the tool on the main shaft 1 to process a workpiece according to the compensation value; and when the control system 3 judges that the radius of the tool to be measured is larger than the measured diameter of the tool setting gauge 2, the control system controls the tool setting gauge 2 to deflect and then enables the tool to be measured to touch the tool setting gauge 2.
When the tool setting gauge 2 touches a tool on the main shaft 1, a measurement signal is generated, the control system 3 receives the measurement signal and then measures a coordinate value of the position of the tool at that time, the coordinate value of the tool is used for calculating a compensation value, wherein the control system 3 firstly measures the coordinate value of a standard tool, the standard tool is the tool with the minimum length currently used on the machine tool and is used as the standard tool, the control system 3 measures the coordinate value of the tool to be measured, the compensation value of the tool to be measured can be obtained by calculating the coordinate value of the tool to be measured and the coordinate value of the standard tool, and then the compensation value can be used for length compensation of the tool to be measured, so that the machining quality of the machine tool is ensured.
In order to enable the machine tool to adapt to the tool with the larger tool diameter, when the coordinate value of the tool to be measured is measured, the control system 3 firstly judges the radius of the tool to be measured and the measurement diameter of the tool setting gauge 2, when the radius of the tool to be measured is larger than the measurement diameter of the tool setting gauge 2, the tool to be measured cannot be effectively touched with the tool setting gauge 2, so that the control system 3 controls the tool setting gauge 2 to deviate by a distance at the moment, the tool tip of the tool to be measured can face the center of the tool setting gauge 2, effective touching between the tool to be measured and the tool setting gauge 2 can be realized, the compatibility of the machine tool can be improved, and the machine tool can be also suitable for the tool with the larger tool diameter.
Specifically, the tool setting gauge 2 is a contact type tool setting gauge. The contact tool setting device generates a measuring signal when the tool contacts the contact tool setting device, the measuring signal is transmitted to the control system 3, and the control system 3 carries out measurement according to the measuring signal.
Specifically, the tool setting gauge 2 comprises a contact surface, and the spindle 1 controls the tool to move to touch the contact surface. The contact surface is a working surface in contact with the cutter, after the cutter touches the contact surface, the cutter setting gauge 2 can generate a measuring signal, and in a specific working process, the contact surface is touched by a hand to enable an indicator lamp on the cutter setting gauge 2 to be on so as to judge the working state of the cutter setting gauge 2.
Specifically, the tool setting device further comprises a driving mechanism 4 for driving the tool setting gauge 2 to move, and the control system 3 controls the driving mechanism 4 to drive the tool setting gauge 2. The tool setting instrument 2 needs to move to better butt joint with a tool on the main shaft 1, so the arranged driving mechanism 4 is used for driving the tool setting instrument 2 to move and realize control through the control system 3, the driving mechanism 4 can be a motor and other common equipment, and the motor drives the tool setting instrument 2 to move on a workbench or a guide rail.
According to the length compensation system for the cutter of the numerical control machine tool, when the radius of the cutter to be measured is larger than the measured diameter of the cutter setting gauge 2, the cutter setting gauge 2 is controlled to deflect, so that the cutter point of the cutter to be measured can be consistent with the center of the cutter setting gauge 2, the cutter to be measured can be effectively contacted with the cutter setting gauge 2, the compatibility of the system is improved, the system can be suitable for length compensation of a large cutter, meanwhile, the compensation value of the cutter can be obtained through measurement of the coordinate value of the cutter, the cutter can be compensated, and the machining quality of the machine tool can be guaranteed.
Referring to fig. 2, the method for compensating the length of the cutter of the numerical control machine tool comprises the following steps:
the main shaft 1 moves the standard cutter above the cutter setting instrument 2, and the control system 3 measures and obtains a Z-axis coordinate value of the standard cutter;
the control system 3 compares the radius of the tool to be measured with the measured diameter of the tool setting gauge 2, if the radius of the tool to be measured is not larger than the measured diameter of the tool setting gauge 2, the tool to be measured is contacted with the tool setting gauge 2, otherwise, the control system 3 controls the tool setting gauge 2 to be contacted with the tool to be measured after deviating on the X axis; when the tool to be measured touches the tool setting gauge 2, the control system 3 measures and obtains a Z-axis coordinate value of the tool to be measured;
the control system 3 obtains a compensation value of the length of the tool to be measured according to the Z-axis coordinate value of the standard tool and the Z-axis coordinate value of the tool to be measured;
and the control system 3 performs length compensation according to the compensation value of the length of the cutter to be measured.
The control system 3 firstly obtains a Z-axis coordinate value of the standard cutter, then judges the size relationship between the radius of the cutter to be measured and the measurement diameter of the tool setting gauge 2, when the radius of the cutter to be measured is larger than the measurement diameter of the tool setting gauge 2, the tool setting gauge 2 is controlled to deviate for a certain distance on the X axis, so that the tool tip of the cutter to be measured is positioned at the central position of the tool setting gauge 2, the cutter to be measured can be effectively touched with the tool setting gauge 2, after the cutter to be measured is touched with the tool setting gauge 2, the control system 3 measures the Z-axis coordinate value of the cutter to be measured, so that the compensation value of the cutter to be measured can be calculated according to the Z-axis coordinate value of the cutter to be measured and the Z-axis coordinate value of the standard cutter, then the control system 3 can compensate according to the compensation value, and the machining quality of the machine tool is ensured.
Specifically, before the spindle 1 moves the standard knife above the tool setting gauge 2, the control system 3 measures and obtains X, Y axis coordinates of the tool setting gauge 2. The X, Y axis coordinates of the tool setting gauge 2 are acquired for positioning, and the control system 3 directly moves the spindle 1 to the X, Y axis coordinate position of the tool setting gauge 2 when moving the spindle 1.
Specifically, the control system 3 stores radius data and length data of the tool in advance, and the control system 3 sets the tool with the smallest length as the standard tool according to the length data. The tool diameter data is used for subsequent comparison with the diameter measured by the tool setting gauge 2, the length data is stored for selecting a standard tool, the shortest tool is firstly used as the standard tool in the using process of the numerical control machine tool, and when the tools to be measured with different specifications are replaced, the tool to be measured needs to be compensated due to different lengths, so that the tool to be measured is prevented from damaging a workpiece due to overlong length.
Specifically, when the radius of the tool to be measured is larger than the measurement diameter of the tool setting gauge 2, the control system 3 controls the offset distance of the tool setting gauge 2 on the X axis to be the size of the measurement radius of the tool setting gauge 2. For example, the measuring diameter of the tool setting gauge 2 adopted by the invention is 20mm, and when the radius of the tool to be measured is greater than 20mm, the tool setting gauge 2 is controlled to deviate 10mm on the X axis, so that the tool point of the tool to be measured is consistent with the center of the tool setting gauge 2, and the tool to be measured can be effectively touched with the tool setting gauge 2. The specific offset direction of the tool setting gauge 2 may be set according to actual conditions, and may be a positive direction of the X axis or a negative direction of the X axis.
Specifically, the calculation formula of the compensation value of the length of the tool to be measured is as follows:
L＝|A-B+C|；
wherein A is the Z-axis coordinate value of the tool to be measured, B is the Z-axis coordinate value of the standard tool, C is the length of the standard tool, and L is equal to the absolute value of A-B + C. After the compensation value of the length of the tool to be measured is obtained, the control system 3 may adjust the set processing zero point according to the compensation value, for example, control the main shaft 1 to move the distance of the compensation value in the negative direction of the Z axis, so that the tool tip of the tool to be measured may be exactly positioned on the workpiece during processing, and the processing quality is ensured.
The specific compensation process is that after the compensation value of the tool to be measured is measured, the inverse number of the compensation value of the tool to be measured is input into the Z-axis coordinate of the machine tool, then the tool to be measured is moved to the position above the workpiece to be machined, and finally the measured value of the mechanical coordinate is input into the offset coordinate, so that the compensation of the length of the tool can be completed.
According to the length compensation method for the cutter of the numerical control machine tool, the radius of the cutter to be measured is compared with the measured diameter of the cutter setting gauge 2, and when the radius of the cutter to be measured is larger than the measured diameter of the cutter setting gauge 2, the cutter setting gauge 2 is controlled to move for a certain distance, so that the cutter point of the cutter to be measured can be aligned to the center of the cutter setting gauge 2, the cutter to be measured can be in contact with the cutter setting gauge 2, and the compatibility of the system is improved.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and the present invention shall fall within the protection scope of the present invention as long as the technical effects of the present invention are achieved by the same means.
Claims (2)
1. The utility model provides a digit control machine tool cutter length compensation system which characterized in that: the method comprises the following steps:
the main shaft is used for installing a cutter;
the tool setting gauge is used for providing a measuring signal when contacting with a tool and is a contact type tool setting gauge;
the control system stores length data and radius data of the cutter, and measures and stores coordinate values when the cutter is contacted with the tool setting gauge;
the driving mechanism is used for driving the tool setting gauge to move, and the control system controls the driving mechanism to drive the tool setting gauge;
the tool setting instrument provides a measuring signal to the control system when contacting with a tool on the main shaft, the control system measures and stores coordinate values of the tool, the control system calculates a compensation value according to the coordinate values of the standard tool and the tool to be measured, and the control system moves the main shaft and the tool on the main shaft according to the compensation value to process a workpiece; when the control system judges that the radius of the tool to be measured is larger than the measured diameter of the tool setting gauge, the control system controls the tool setting gauge to deflect and then enables the tool to be measured to be in contact with the tool setting gauge, and the offset distance of the tool setting gauge is the size of the measured radius of the tool setting gauge; the tool setting gauge comprises a contact surface, and the main shaft controls the tool to move to touch the contact surface.
2. A length compensation method of a cutter of a numerical control machine tool using the length compensation system of a cutter of a numerical control machine tool according to claim 1, characterized in that: the method comprises the following steps:
the control system measures and obtains X, Y axis coordinates of the tool setting gauge, the main shaft moves the standard tool above the tool setting gauge, and the control system measures and obtains Z axis coordinate values of the standard tool;
the control system compares the radius of the tool to be measured with the measured diameter of the tool setting gauge, if the radius of the tool to be measured is not larger than the measured diameter of the tool setting gauge, the tool to be measured is contacted with the tool setting gauge, otherwise, the control system controls the tool setting gauge to be contacted with the tool to be measured after the tool setting gauge deflects on the X axis; when the radius of the tool to be measured is larger than the measured diameter of the tool setting gauge, the control system controls the offset distance of the tool setting gauge on the X axis to be the size of the measured radius of the tool setting gauge;
when the tool to be measured touches the tool setting gauge, the control system measures and obtains a Z-axis coordinate value of the tool to be measured;
the control system obtains a compensation value of the length of the tool to be measured according to the Z-axis coordinate value of the standard tool and the Z-axis coordinate value of the tool to be measured;
the control system performs length compensation according to the compensation value of the length of the cutter to be measured;
the control system stores radius data and length data of the cutter in advance, and takes the cutter with the minimum length as a standard cutter according to the length data;
the calculation formula of the compensation value of the length of the cutter to be measured is as follows: l ═ a-B + C |;
wherein A is the Z-axis coordinate value of the tool to be measured, B is the Z-axis coordinate value of the standard tool, and C is the length of the standard tool.
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