CN114871474B - Method for automatically breaking chips in intelligent drilling of machine tool - Google Patents
Method for automatically breaking chips in intelligent drilling of machine tool Download PDFInfo
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- CN114871474B CN114871474B CN202210645270.2A CN202210645270A CN114871474B CN 114871474 B CN114871474 B CN 114871474B CN 202210645270 A CN202210645270 A CN 202210645270A CN 114871474 B CN114871474 B CN 114871474B
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- 238000005553 drilling Methods 0.000 title claims abstract description 169
- 238000000034 method Methods 0.000 title claims abstract description 63
- 238000005520 cutting process Methods 0.000 claims abstract description 56
- 238000012545 processing Methods 0.000 claims abstract description 32
- 238000003754 machining Methods 0.000 claims description 28
- 230000001960 triggered effect Effects 0.000 claims description 6
- 125000004122 cyclic group Chemical group 0.000 claims description 5
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
- B23B47/34—Arrangements for removing chips out of the holes made; Chip- breaking arrangements attached to the tool
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The invention relates to an intelligent drilling automatic chip breaking method for a machine tool, which belongs to the technical field of machining center machine tools and comprises a numerical control machine tool, a main shaft motor rotating speed acquisition method, a design program variable operation method and drilling chip breaking feeding cutting control. The control method for automatic chip breaking of the drilling is designed and packaged into a CNC (computer numerical control) identifiable executable custom G code program instruction of a machine tool numerical control system, a depth value Z of the drilling is obtained through setting of an instruction G code, a feeding value Q of each rotation of a cutter, a chip breaking depth multiple value E, a drilling safety height position value R and a chip breaking control closing identification value P. The problems of difficult chip breaking, difficult chip removal and chip winding are thoroughly solved, and the cutter has the characteristics of good operation stability, long service life, high drilling precision and the like. The method is suitable for multi-hole continuous processing chip breaking and deep hole processing chip breaking, reduces auxiliary time for manually removing chips, and improves drilling efficiency.
Description
Technical Field
The invention relates to the technical field of machine tools of machining centers, in particular to an intelligent drilling and automatic chip breaking method of a machine tool.
Background
The machining center can generate a large amount of chips in the drilling process, the chips are required to be discharged timely and effectively, otherwise, the problems of cutting blockage, inner wall roughening of holes, unqualified smoothness and the like can be caused. In addition, according to the difference of different workpiece materials, some chips are wound on the cutter, and the chips are manually removed, so that the drilling efficiency is greatly reduced. The prior art adopts a cutting tool with a chip breaking structure design, and realizes chip breaking processing of chips by utilizing the special structure of the tool, but the cutting tool is not recommended by a plurality of users due to high purchase cost of the tool.
Disclosure of Invention
The invention mainly solves the problems of difficult chip breaking and chip removal of chips generated in the drilling process, the technical problems of galling of the inner wall of a machined hole or unqualified surface finish caused by the chips, easy winding of the chips on a cutter, low drilling efficiency and poor chip removal of a deep hole. The invention provides a method for automatically cutting chips in intelligent drilling of a machine tool, which is characterized in that a control method for automatically cutting chips is customized and packaged into a numerical control system capable of identifying executable G code program instructions, required drilling related variable data values are set and acquired, incremental feeding step cutting machining is performed through a control machine tool after program variable logic operation, the number of idle turns of a main shaft which is axially and instantaneously suspended is precisely controlled, the purpose of cutting effect of chips is achieved by utilizing instantaneous free cutting of the main shaft, and the chip length adjustment control of the broken chips of the drilling can be realized by calculating and controlling the axial incremental stepping quantity of the drilling.
The intelligent drilling automatic chip breaking method of the machine tool can be suitable for drilling chip breaking of various workpiece materials, continuous porous drilling cyclic chip breaking, drilling chip breaking of a conventional cutter and deep hole chip breaking, greatly reduces the purchase cost of a user on the cutter, reduces the auxiliary time for manually removing chips, and improves the economical efficiency of drilling processing. The automatic chip breaking method for drilling solves the drilling process problems of difficult chip breaking, difficult chip removal and easy chip winding, can ensure the drilling precision and surface finish, is beneficial to improving the drilling feeding speed, improves the drilling machining efficiency, and can greatly prolong the service life of the cutter.
The technical problems of the invention are mainly solved by the following technical proposal:
the intelligent drilling automatic chip breaking method for the machine tool comprises the step that a numerical control machine tool obtains the rotating speed of a spindle motor, a design program variable operation method and drilling chip breaking feeding cutting control through a sensor. The control method for automatic chip breaking of the drilling is designed and packaged into a CNC (computer numerical control) identifiable executable custom G code program instruction of a machine tool numerical control system, a depth value Z of the drilling is obtained through setting of an instruction G code, a feeding value Q of each rotation of a cutter, a chip breaking depth multiple value E, a drilling safety height position value R and a chip breaking control closing identification value P. The control method adopts the logic operation of the instruction program variable data, the logic operation of the drilling depth judgment and the control of the cutting feed of the drilling broken chip of the machine tool.
Preferably, the program variable operation 1: the drilling feed speed value f=spindle rotation speed value s×tool per rotation feed value Q, and the operation result F takes an integer value. Program variable operation 2: the drilling chip breaking depth variable A=the feeding quantity Q multiplied by the value E of each rotation of the cutter, the cutting length of automatic chip breaking of the drilling can be controlled by the value of the multiplied value E, the larger the multiplied value E is, the longer the cutting length after automatic chip breaking is, and the smaller the multiplied value E is, the shorter the cutting length after automatic chip breaking is. Program variable operation 3: the instantaneous stop time variable B= (60.0/spindle rotation speed value S) ×n of drilling feed is calculated to obtain a time value (unit: second) required by n circles of spindle operation, and the n value is verified and determined according to chip breaking processes of different materials. Program variable operation 4: target drill hole depth position value C = current drill hole depth position z 1-drill hole chip breaking depth variable a, the target drill hole depth position C value is initialized to zero at the beginning of automatic chip breaking control.
Preferably, after setting drilling related data according to program G code instruction, executing control opening of automatic chip breaking of drilling, quickly positioning a drilling shaft to a position above the hole site surface by a fixed distance, feeding the drilling shaft to the initial plane coordinate position (workpiece surface) of the drilling at a feeding speed F (operation formula f=s×q), executing calculation of program variable operation data 4 to obtain a target drilling depth position value C (operation formula c=z1-a), performing logical magnitude comparison operation on the value C and a hole depth set value Z, and when the value C is smaller than Z, judging that the set drilling depth position is not reached, controlling the machine tool drilling shaft to feed cutting action at a feeding speed increment of the value F, wherein the feeding stroke is a drilling chip breaking depth variable value a. After the cutting feed depth reaches the value A, the axial pause feed action is executed, the pause time is the value of a drilling feed instantaneous stop time variable B (operation formula B= (60.0/S) x n), the idle rotation of the main shaft for n circles is realized by calculating and controlling the feed pause time, and the purpose of cutting the chip is achieved by utilizing the instantaneous idle cutting of the main shaft. And after the pause time is reached, the calculation of the target drilling depth position value C (operation formula C=z1-A) is carried out again, a new round of data judgment operation is carried out again, if the target drilling depth position value C is smaller than Z, the machine tool is controlled to repeatedly and circularly execute the drilling axial increment feeding step cutting action until the calculation results in that the target drilling depth position value C is larger than the hole depth set value Z, the machine tool is controlled to cut to the Z-value hole depth position at the speed of F value, the machine tool is controlled to quickly lift and return to the safe height R position after the completion, if the calculation C is equal to Z, the drilling is ended and lifted to the R position, and the chip breaking machining action of the hole is controlled to be completed. And setting the coordinate position of the next hole site according to the program instruction G code, and continuing to finish chip breaking processing of the next hole site by the control method so as to continuously and repeatedly perform processing. And adding a chip breaking function closing identification value P after the last hole site coordinate instruction, closing the chip breaking control function after finishing chip breaking processing of the current hole site when the instruction P0 is executed, and carrying out initialization zero clearing on data in all program variable registers participating in the operation at this time, so as to prepare for executing variable operation for the next start and prevent errors of variable data operation in subsequent registers.
Preferably, the name of the package customized G code instruction may be changed according to the user's requirement, the default is defined as G500 initially, and the instruction type is a cyclic instruction, that is, after Z, R, Q, E is instructed to the first hole program, when the chip breaking process of multiple holes is executed subsequently, only the position coordinates X and Y of each hole are instructed, the relevant setting data of the chip breaking function will remain memorized valid, and after P0 is executed, the relevant data is initialized, reset and cleared. G code instruction sets the program position coordinates X and Y values of the drilling hole, the numerical values are stored in corresponding variable registers, and the numerical value range is set according to the processing requirement of a user workpiece, and the unit is: mm (millimeters).
Preferably, the G code instruction sets a Z value of a drilling depth position, the numerical value is stored in a corresponding variable register, and the numerical value range is set according to the processing requirement of a user workpiece, and the unit is: mm (millimeters). If the Z value is not set or the set value is 0 in the instruction, a system alarm is triggered, and the machine tool processing is terminated.
Preferably, the G code instruction sets a drilling safety height position R value, the value is stored in a corresponding variable register, and the value range is set according to the processing requirement of a user workpiece, and the unit is that: mm (millimeters). If the R value is not set or the set value is 0 in the instruction, a system alarm is triggered, and the machine tool processing is terminated.
Preferably, the G code instruction sets the Q value of the feed amount per revolution of the drilling tool, the numerical value is stored in a corresponding variable register, and the numerical value range is set according to the processing requirement of the user workpiece, and the unit is: mm (millimeters). The Q value may be set according to a recommended value of a technical parameter calibrated using the drilling tool. If the Q value is not set or the set value is 0 in the instruction, a system alarm is triggered to terminate the machine tool processing.
Preferably, the G code instruction sets a drill hole chip breaking depth multiple value E, the value is stored in a corresponding variable register, and the value range is recommended as follows: 1-30, if the E value is not set or the set value is 0 in the instruction, the initial endowed value is automatically defaulted to be 5.
Preferably, the chip breaking drilling spindle running speed value S is as follows: RPM/min (revolutions per minute), a value is stored in a corresponding variable register, which value is involved in the calculation of the borehole feed speed value F.
Preferably, the chip breaking drill feed speed value F, in units of: mm/min (millimeters/minute), the operation formula is F=spindle rotation speed value S×cutter per rotation feed value Q, and the operation result value is processed by taking an integer. The automatic chip breaking and feeding process of the drilling takes the calculated value F as the axial cutting speed.
Preferably, the drill chip breaking depth value A, unit: mm (millimeters), the operation formula is A=the feed quantity Q per rotation of the cutter x the chip breaking depth multiplied value E. The drill hole chip breaking depth value a will participate in the calculation of the target drill hole depth position value C. The size of the chip breaking depth multiple value E determines the chip length of automatic chip breaking of a drilling hole, when the set multiple value E is larger, the chip length generated after chip breaking is longer, otherwise, the smaller the multiple value E is, the shorter the chip length generated after chip breaking is, and a user can determine and adjust the size of the chip breaking depth multiple value E according to parameters such as workpiece material, cutter specifications and the like.
Preferably, the instantaneous drill feed stop time variable B, unit: s (seconds), the operation formula is B= (60.0/main shaft rotating speed value S) x n, the time value required by the operation of the main shaft for n circles is accurately calculated according to different main shaft operation rotating speed values required by drilling processing, and the n value is verified and determined according to chip breaking processes of different materials. The purpose of cutting off the chip is achieved by controlling the instantaneous drilling feeding stop time variable B and utilizing the instantaneous blank cutting of the main shaft.
Preferably, the target borehole depth position value C, in units of: mm (millimeters), the operation formula is C=the current drilling depth position value z 1-the drilling chip breaking depth variable A. The calculated value and the Z value of the drilling depth are subjected to logical size comparison operation, the calculated value is used as a judging condition and a basis for whether to continue to execute axial chip breaking feeding and cutting, when the C value is smaller than the Z value, the situation that the position of the drilling depth is not reached is judged, the chip breaking incremental cutting and feeding action is executed once, and the feeding speed is calculated as the calculated value F. And after the chip breaking cutting is performed once, judging whether the comparison target C value is larger than the Z value again, if so, repeatedly and circularly executing the chip breaking incremental feeding cutting action until the calculation result target C value is larger than the set Z value, switching to an absolute position mode and controlling the axial feeding cutting to the Z value, and completing the chip breaking processing cycle of one hole site.
Preferably, the automatic chip breaking control closing identification value P of the drilling is stored in a corresponding variable register, when the automatic chip breaking control of the drilling is required to be closed, a P0 instruction is added after an X/Y coordinate instruction of a hole site, the P value is judged and calculated after the current hole site machining is executed, if the P value is 0, the current chip breaking control is closed, and the numerical value in the register which participates in the calculation related to the current machining is initialized and cleared.
The invention can achieve the following effects:
compared with the prior art, the intelligent drilling automatic chip breaking method for the machine tool has the characteristics of good operation stability, long service life of the tool and high machining efficiency. Through logical operation of data variables, the purpose of automatic chip breaking is realized by utilizing the cooperation of the axial increment feed stepping cutting of the drilling and the idle cutting of the main shaft in the axial pause time, and the technical problems of difficult chip breaking, difficult chip removal, chip winding and the like in the drilling processing process are thoroughly solved. The drilling and chip breaking processing method is applicable to drilling and chip breaking processing of various workpiece materials, can be applicable to continuous and porous drilling and chip breaking processing of conventional cutters, greatly reduces the purchase cost of the cutters of users, improves the drilling and processing efficiency, and prolongs the service life of the cutters.
Detailed Description
The technical scheme of the invention is further specifically described by the following examples.
Examples: a method for automatically cutting chips in intelligent drilling of a machine tool comprises a high-precision rotating speed sensor of a spindle motor of the numerical control machine tool, and the control method for automatically cutting chips in the drilling is packaged into a G500 program instruction which can be identified and executed by a numerical control system of the machine tool, and the name of the instruction can be designed and changed according to the requirements of a user. Includes program variable data logic operation, drilling depth logic operation and machine tool drilling chip breaking feeding cutting control. Setting and obtaining a depth value Z of a drilling hole through a G code instruction, wherein the unit is as follows: mm (millimeters); cutter cutting per rotation feed value Q, unit: mm (millimeters); a chip breaking depth multiple value E, and the integer value of the recommended range of 1-30; drilling safety height position value R, unit: mm (millimeters); the chip breaking control is turned off by the identification value P, and when the instruction P0 is issued, the chip breaking control is turned off. The program instruction writing format of the intelligent drilling automatic chip breaking method of the machine tool comprises the following steps: g500x_y_z_r_q_e_p_. When the CNC program of the numerical control system executes the instruction G500 code and starts the automatic chip breaking control of the machine tool drilling, the system will extract and store the set data value behind the X, Y, Z, R, Q, E, P code into the corresponding program variable data register. If the Z value is not set or the set value is 0 in the instruction, triggering a system alarm: "100,The depth data of the hole is empty! ", and terminating machine tool machining; if the R value is not set or the set value is 0 in the instruction, triggering a system alarm: "101, r= 0,The data is empty-! ", and terminating machine tool machining; if the Q value is not set or the set value is 0 in the instruction, triggering a system alarm: "102, q= 0,The data is empty-! ", and terminating machine tool machining; if the E value is not set or the set value is 0 in the instruction, the default value is automatically set to be 5.
After the instruction related data is set and the register is extracted, the following data values are obtained after the operation of the data program variables is executed: the drilling feeding speed value F is calculated by the formula of F=spindle rotation speed value S×cutter feeding quantity value Q per rotation, and the calculated result F takes an integer value; the axial chip breaking depth variable A of the drilling hole is calculated according to the formula of A=the feeding quantity Q of the cutter per rotation x the chip breaking depth multiple value E; and the operation formula of the drilling feeding instantaneous stop time variable B is B= (60.0/main shaft rotating speed value S) ×n, and the n value is determined according to chip breaking process verification of different materials. After the data variable operation is completed, the X/Y axis of the machine tool is quickly fixed to the position of the hole site to be machined, the Z axis is quickly positioned to the position 2 mm above the surface of the hole site from the fixed height position, and then the machine tool is moved to the position Z0.00 of the initial machining plane coordinate of the workpiece at the feeding speed F (the operation formula is F=S×Q), so that the machine tool reaches the preparation state of automatic chip breaking of drilling.
After the Z axis of the machine tool reaches the Z0.00 position, executing program variable operation to obtain: and (3) performing logic magnitude comparison operation on the C value and the hole depth set value Z according to a target hole depth position value C (the operation formula is C=z1-A), judging that the set Z-axis hole depth position is not reached when the judgment result C is smaller than the Z value, and controlling the Z axis of the machine tool to feed the cutting action at the feeding speed increment of the F value, wherein the increment feeding stroke is the variable A value of the drill chip breaking depth value (the operation formula is A=Q×E). The size of the chip breaking depth multiple value E directly determines the length of chips after automatic chip breaking machining of drilling, the larger the multiple value E is, the longer the chip length after automatic chip breaking effect is, the smaller the multiple value E is, the shorter the chip length after automatic chip breaking effect is, but the longer the program machining is, and a user can determine and adjust the size of the increment stepping multiple E value according to parameters such as the material/material of a machined workpiece, the specification of a drilling tool and the like. After the cutting depth of the Z-axis incremental feeding reaches the A value, axial accurate pause feeding action is executed, the pause time is a drilling feeding instantaneous stop time variable B (operation formula B= (60.0/S) x n), the n value is determined according to the chip breaking process verification of different materials, when n=0.8 in the example, the variable B is calculated at the moment to be the time value required by the spindle to run for 0.8 circle. The precise motion of idling the spindle motor for 0.8 circle is realized by precisely calculating and controlling the feeding pause time; by precisely controlling the axial instantaneous stop time variable B, the main shaft of the machine tool is in an idle and non-cutting state, and the purpose of cutting off the drill cuttings is achieved by utilizing the instantaneous idle of the main shaft. After the pause time is finished, the calculation of the target drilling depth position value C is executed again (operation formula C=z1-A), a new round of data judgment operation is executed again, if the target drilling depth position value C is smaller than Z, the machine tool is controlled to repeatedly and circularly execute drilling chip breaking feeding and cutting, the machine tool Z axis continuously and repeatedly carries out cutting feeding by the stepping depth value A until the operation shows that the target drilling depth position value C is larger than the hole depth set value Z, the machine tool is controlled to cut to the Z value hole depth position at the speed of the F value, and then the machining circulation judgment and axial cutting feeding actions are exited. And then controlling the Z axis of the machine tool to rapidly lift and return to the safe height R position, and completing the chip breaking machining control action of the hole site. For multi-hole site machining, the machine tool sets the coordinate position of the next hole site according to the program instruction G code, and the chip breaking feeding control method is used for finishing the machining of the next hole site continuously, so that the continuous cyclic machining is executed. When the chip breaking function closing identification value P is added after the last hole site coordinate instruction, the instruction writing format is as follows: when the program instructs P0, the chip breaking control function is closed after the chip breaking processing of the current hole site is completed, and all the data in the registers participating in the operation at this time are initialized and cleared, so that the preparation is made for the next starting variable operation, and the problem of operation errors is prevented.
In conclusion, the intelligent drilling automatic chip breaking method for the machine tool has the characteristics of good operation stability, long service life of the cutter, high drilling precision, high machining efficiency and the like. The problems of difficult chip breaking, difficult chip removal and chip winding are thoroughly solved, the machining precision and the surface smoothness of the drilling hole are ensured, the machining efficiency of the drilling hole is greatly improved, and the service life of the cutter is greatly prolonged. The drilling and chip breaking machine is applicable to drilling and chip breaking machining of various workpiece materials, is applicable to continuous and porous drilling and chip breaking circulating machining, is applicable to drilling and chip breaking machining of conventional cutters, greatly reduces purchase cost of users on the cutters, and improves economical efficiency of drilling and machining.
The above embodiments are merely examples of the present invention, but the present invention is not limited thereto, and any changes or modifications made by those skilled in the art are included in the scope of the present invention.
Claims (12)
1. A method for automatically breaking chips in intelligent drilling of a machine tool is characterized by comprising the following steps: the method comprises the steps that a numerical control machine obtains the rotating speed of a spindle motor through a sensor, a design program variable operation method and drilling chip breaking feeding cutting control; the control method of automatic chip breaking of the drilling is designed and packaged into a custom G code program instruction which can be recognized and executed by a CNC (computer numerical control) system of the machine tool, a depth value Z of the drilling is obtained through setting of the G code program instruction, a feeding value Q, a chip breaking depth multiple value E, a drilling safety height position value R and a chip breaking control closing recognition value P are fed to a cutter per rotation; adopting the logic operation of instruction program variable data, the logic operation of drilling depth judgment and the control of machine tool drilling chip breaking feeding and cutting;
program variable operation 1: drilling feed speed value F=spindle rotation speed value S×cutter per-rotation feed value Q, and the operation result F takes an integer value;
program variable operation 2: the drilling chip breaking depth variable A=the feeding quantity Q multiplied by the value E of each rotation of the cutter, the size of the multiplied value E can realize the control of the chip length of automatic chip breaking of the drilling, the larger the multiplied value E is, the longer the chip length after automatic chip breaking is, and the smaller the multiplied value E is, the shorter the chip length after automatic chip breaking is;
program variable operation 3: the instantaneous idle time variable b=60.0/spindle rotation speed value s×n of the drill feed, this calculation gives the time value unit required for n turns of spindle: second, the value of n is verified and determined according to chip breaking processes of different materials;
program variable operation 4: a target drilling depth position value c=current drilling depth position z 1-drilling chip breaking depth variable a, the target drilling depth position C value being initialized to zero at the start of automatic chip breaking control;
after setting related drilling data according to G code program instructions, executing control opening of automatic chip breaking of drilling, quickly positioning a drilling shaft to a position above the surface of a hole position by a fixed distance, feeding the drilling shaft to the initial plane coordinate position of the drilling hole, namely the surface of a workpiece, according to a drilling feeding speed value F, calculating a program variable calculation data 4, obtaining a target drilling depth position value C, carrying out logic magnitude comparison calculation on the value C and a drilling depth value Z according to a calculation formula C=z1-A, judging that the drilling depth position is not reached when the value C is smaller than Z, and controlling a machine tool drilling shaft to feed cutting action in a feeding speed increment of the F value, wherein the feeding stroke is a drilling chip breaking depth variable A; after the cutting feeding depth reaches the value A, axial feeding pausing is carried out, the pausing time is the value of a drilling feeding instantaneous stop time variable B, the operation formula B=60.0/S×n, the main shaft is idled for n circles by calculating and controlling the feeding pausing time length, and the purpose of cutting off the chips is achieved by utilizing the instantaneous blank cutting of the main shaft; when the pause time is up, the calculation of a target drilling depth position value C is executed again, a calculation formula C=z1-A is executed again, a new round of data judgment operation is executed again, if the target drilling depth position value C is smaller than Z, the machine tool is controlled to repeatedly and circularly execute drilling axial increment feeding step cutting action until the calculation results in that the target drilling depth position value C is larger than the drilling depth value Z, the machine tool is controlled to cut to the Z value hole depth position at the speed of F value, after completion, the machine tool is controlled to quickly lift and return to the drilling safety height position value R, if the calculation formula C is equal to Z, drilling is ended and lifted to the R position, and the chip breaking machining action of one hole is controlled to be completed; setting the coordinate position of the next hole site according to the G code program instruction, continuing to finish chip breaking processing of the next hole site by using the control method, continuously repeating the cyclic processing execution, adding a chip breaking function closing identification value P after the last hole site coordinate instruction, closing the chip breaking control function after finishing chip breaking processing of the current hole site when the instruction P0 is executed, and carrying out initialization zero clearing on data in all program variable registers participating in the operation at the time, so as to prepare for starting and executing variable operation at the next time and prevent the variable data operation in the subsequent registers from generating errors.
2. The method for automatically breaking chips in intelligent drilling of machine tool according to claim 1, wherein the method comprises the following steps: the name of the G code program instruction can be packaged and customized, the design change can be made according to the user requirement, the initial default definition is G500, the instruction type is a cyclic instruction, namely after Z, R, Q, E value is instructed to the first hole program, when the chip breaking processing of multiple holes is executed subsequently, the position coordinates X and Y value of each hole are instructed, the relevant setting data of the chip breaking function can be kept effective in memory, after P0 is executed, the relevant data is initialized, reset and cleared, the G code program instruction sets the program position coordinates X and Y value of the drilling hole, the numerical value is stored in a corresponding variable register, the numerical value range is set according to the processing requirement of a user workpiece, and the unit is: millimeter.
3. The method for automatically breaking chips in intelligent drilling of machine tool according to claim 2, wherein the method comprises the following steps: g code program instruction sets the depth value Z of drilling, the numerical value is stored in a corresponding variable register, and the numerical value range is set according to the processing requirement of a user workpiece, and the unit is: millimeter; if the Z value is not set or the set value is 0 in the instruction, a system alarm is triggered, and the machine tool processing is terminated.
4. The method for automatically breaking chips in intelligent drilling of machine tool according to claim 2, wherein the method comprises the following steps: g code program instruction sets drilling safety height position value R, numerical values are stored in corresponding variable registers, and numerical value ranges are set according to the machining requirements of user workpieces, wherein the units are as follows: millimeter; if the R value is not set or the set value is 0 in the instruction, a system alarm is triggered, and the machine tool processing is terminated.
5. The method for automatically breaking chips in intelligent drilling of machine tool according to claim 2, wherein the method comprises the following steps: g code program instruction sets the feed quantity Q value of the drilling tool per revolution, the numerical value is stored in a corresponding variable register, and the numerical value range is set according to the processing requirement of a user workpiece, and the unit is: millimeter; the Q value can be set according to the recommended value of the technical parameter calibrated by using the drilling tool, and if the Q value is not set or the set value is 0 in the instruction, a system alarm is triggered to terminate the machine tool processing.
6. The method for automatically breaking chips in intelligent drilling of machine tool according to claim 2, wherein the method comprises the following steps: g code program instruction sets drilling chip breaking depth times value E, the value is stored in a corresponding variable register, and the value range is recommended as follows: 1-30, if the E value is not set or the set value is 0 in the instruction, the initial endowed value is automatically defaulted to be 5.
7. The method for automatically breaking chips in intelligent drilling of machine tool according to claim 1, wherein the method comprises the following steps: chip breaking drilling spindle rotation speed value S, unit: RPM/min, i.e., RPM; the values are stored in corresponding variable registers, which participate in the calculation of the borehole feed speed value F.
8. The method for automatically breaking chips in intelligent drilling of machine tool according to claim 7, wherein the method comprises the following steps: the drilling feeding speed value F is as follows: mm/min, i.e. millimeters/min; the operation formula is F=spindle rotation speed value S×cutter per-rotation feeding value Q, and the operation result value is processed by taking an integer, and the operation value F is used as the axial cutting speed in the automatic chip breaking and feeding process of the drilling.
9. The method for automatically breaking chips in intelligent drilling of machine tool according to claim 1, wherein the method comprises the following steps: drilling chip breaking depth variable A, unit: the operation formula is a=feed quantity Q per rotation of the cutter x the chip breaking depth multiplied value E; the drilling chip breaking depth value A participates in calculation of the target drilling depth position value C, the size of the chip breaking depth multiple value E determines the chip length of automatic chip breaking of drilling, when the set multiple value E is larger, the chip length generated after chip breaking is longer, otherwise, the multiple value E is smaller, the chip length generated after chip breaking is shorter, and a user can determine and adjust the size of the chip breaking depth multiple E according to workpiece material and tool specification parameters.
10. The method for automatically breaking chips in intelligent drilling of machine tool according to claim 1, wherein the method comprises the following steps: drilling feeding instantaneous stop time variable B, unit: second, the operation formula is B=60.0/spindle rotation speed value S×n, the time value required by the spindle in n circles is accurately calculated according to different spindle operation rotation speed values required by drilling, and the n value is verified and determined according to different material chip breaking processes; the purpose of cutting off the chip is achieved by controlling the instantaneous drilling feeding stop time variable B and utilizing the instantaneous blank cutting of the main shaft.
11. The method for automatically breaking chips in intelligent drilling of machine tool according to claim 1, wherein the method comprises the following steps: target borehole depth position value C, unit: millimeter, wherein the operation formula is C=the current drilling depth position value z 1-the drilling chip breaking depth variable A; the operation value is compared with a depth value Z of the drill hole in logic size, and is used as a judging condition and a basis for whether to continue to execute axial chip breaking feeding and cutting, when the value C is smaller than the value Z, the situation that the position of the depth of the drill hole is not reached is judged, a chip breaking increment cutting and feeding action is executed, and the feeding speed is the operation value F; and after the chip breaking cutting is performed once, judging whether the comparison target C value is larger than the Z value again, if so, repeatedly and circularly executing the chip breaking incremental feeding cutting action until the calculation result target C value is larger than the set Z value, switching to an absolute position mode and controlling the axial feeding cutting to the Z value, and completing the chip breaking processing cycle of one hole site.
12. The method for automatically breaking chips in intelligent drilling of machine tool according to claim 1, wherein the method comprises the following steps: and the automatic chip breaking control closing identification value P of the drilling is stored in a corresponding variable register, when the automatic chip breaking control of the drilling is required to be closed, a P0 instruction is required to be added after the X/Y coordinate instruction of the hole site, the P value is judged and calculated after the current hole site machining is executed, if the P value is 0, the current chip breaking control is closed, and the numerical value in the register which participates in the calculation related to the current machining is initialized and cleared.
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