Diamond multi-wire cutting machine control system and control method thereof

Abstract

The diamond multi-wire cutting machine control system comprises a diamond wire saw, a first take-up and pay-off wire storage module, a second take-up and pay-off wire storage module, a first wire guide wheel, a second wire guide wheel, a main shaft cutting grooved wheel module and a control module. A diamond wire saw is led out from the first take-up and pay-off wire storage module, sequentially passes through the first wire guide wheel, the main shaft cutting grooved wheel module and the second wire guide wheel and is finally wound on the second take-up and pay-off wire storage module, a first displacement sensor is arranged on the first wire guide wheel, and a second displacement sensor is arranged on the second wire guide wheel. The control module is used for receiving signals of the two sensors, calculating the current line bow height in real time based on a preset line bow calculation model, and adjusting the feeding speed of the spindle cutting grooved wheel module according to the comparison result of the actual line bow height and a preset target. The wire bow height can be calculated, the feeding speed of the main shaft is effectively adjusted through closed-loop control, the cutting precision and stability are guaranteed, and shutdown can be conducted in time when abnormity occurs.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of multi-wire saw control technology, in particular to a diamond multi-wire saw control system and a control method thereof. BACKGROUND

[0002] Multi-wire saw technology plays a key role in the field of material processing, especially in the precise cutting of hard and brittle materials. With the development of industry, the requirements for cutting precision, efficiency and material utilization are becoming higher and higher. The application of multi-wire saw technology enables some materials that were originally difficult to process to be effectively cut, promoting the development of many industries such as semiconductors, optics and electronics, and providing strong support for the manufacture of high-precision parts. It can achieve one-time multi-piece cutting, greatly improving production efficiency and to some extent ensuring the flatness and quality of the cutting surface.

[0003] In the operation of traditional diamond multi-wire saws, in order to deal with the phenomenon of excessive wire bow or wire relaxation in the spindle area caused by dynamic changes in material resistance, the existing technology usually relies on manual experience to modify the feed to try to control the size of the wire bow. The operator will observe some phenomena during the cutting process, such as cutting sound, cutting speed changes, etc., based on his own past operating experience, and then manually adjust the feed parameters of the equipment spindle. At the same time, the state of the wire is regularly checked, and the feeling is judged whether the wire bow is appropriate, so as to decide whether to further adjust the feed speed.

[0004] However, this method of relying on manual experience to modify the feed to control the size of the wire bow has obvious defects. Since human judgment is subjective and limited, the size of the wire bow is difficult to control accurately, which in turn affects the quality of the cutting surface. Moreover, this method cannot optimize cutting efficiency in real time according to the cutting situation, resulting in low overall production efficiency. In addition, due to the difficulty in accurately controlling the wire bow, the risk of wire breakage is high, increasing production costs and maintenance workload. At the same time, the material loss rate is also difficult to accurately control, causing waste of resources. SUMMARY

[0005] In a first aspect, to solve the problems of low precision, low efficiency, high risk of wire breakage, etc. caused by the traditional diamond multi-wire saw relying on manual experience to control the wire bow, the present application provides a diamond multi-wire saw control system.

[0006] The diamond multi-wire saw control system provided by the present application adopts the following technical solution: The application discloses a diamond multi-wire saw control system, which comprises a diamond wire saw, a first wire winding and unwinding storage module, a second wire winding and unwinding storage module, a first wire guide wheel, a second wire guide wheel, a spindle cutting groove wheel module and a control module, the diamond wire saw is arranged on the first wire winding and unwinding storage module and sequentially passes through the first wire guide wheel, the spindle cutting groove wheel module and the second wire guide wheel arranged on the second wire winding and unwinding storage module, the first wire guide wheel is provided with a first displacement sensor, the second wire guide wheel is provided with a second displacement sensor, the first displacement sensor is used for detecting the wire winding and unwinding amount and outputting a first detection signal, the second displacement sensor is used for detecting the wire winding and unwinding amount and outputting a second detection signal, the first displacement sensor and the second displacement sensor are electrically connected with the control module, the control module is used for receiving the first detection signal and the second detection signal, calculating the current wire bow height in real time based on a preset wire bow calculation model, and adjusting the feeding speed of the spindle cutting groove wheel module through a comparison result of the actual wire bow height and a preset target, so that the actual wire bow height reaches the preset target.

[0007] By adopting the technical scheme, the displacement sensor is used for collecting the wire winding and unwinding amount data in real time, the wire bow height is accurately calculated in combination with a wire bow calculation model, and manual experience judgment is replaced; the control module dynamically adjusts the feeding speed through closed loop comparison, realizes real-time and accurate control of the wire bow, and effectively improves the cutting precision and efficiency.

[0008] Preferably, the control module comprises an abnormality early warning module, which is used for controlling the spindle cutting groove wheel module to stop when the wire winding and unwinding amount difference exceeds a preset safety threshold interval.

[0009] By adopting the technical scheme, when the wire bow is abnormal (such as being too large or slack), the system can automatically stop, thereby avoiding problems such as wire breakage and equipment damage caused by out-of-control wire bow and reducing production risks.

[0010] Preferably, the control module is used for matching different preset targets according to material hardness.

[0011] By adopting the technical scheme, the optimal wire bow range (for example, 0.5-10 mm for hard materials such as magnetic materials and sapphire and 1-20 mm for soft materials such as magnetic semiconductor silicon materials) is automatically matched for hard materials and soft materials, the cutting precision and efficiency are considered, and the application range of the system is expanded.

[0012] Preferably, the preset wire bow calculation model adopts H=K×(L1−L2), wherein L1 is the wire unwinding amount, and L2 is the wire winding amount.

[0013] By adopting the technical scheme, the wire bow height is directly calculated through the wire winding and unwinding amount difference and a system coefficient, the model is simple and reliable, and real-time and accurate wire bow data support is provided for the control module.

[0014] In a first aspect, to solve the problems of low precision, low efficiency, high risk of wire breakage and the like caused by the dependence of traditional diamond multi-wire saw on manual experience to control the wire bow, the application provides a diamond multi-wire saw control method.

[0015] The diamond multi-wire saw control method provided by the application adopts the following technical scheme: The diamond multi-wire saw control method comprises the following steps: acquiring the take-up amount, the pay-off amount and the K value; calculating the current wire bow height in real time based on a preset wire bow calculation model H=K×(L1−L2), wherein L1 is the pay-off amount and L2 is the take-up amount; comparing the current wire bow height with a preset target; dynamically adjusting the feed speed of the spindle cutting groove wheel module according to the comparison result, so that the actual wire bow height approaches the preset target.

[0016] By adopting the above technical scheme, the take-up and pay-off amount data are collected in real time by the displacement sensor, the wire bow height is accurately calculated by combining the wire bow calculation model, and manual experience judgment is replaced; the feed speed is dynamically adjusted based on closed-loop comparison, real-time and accurate control of the wire bow is realized, and the cutting precision and efficiency are effectively improved.

[0017] Preferably, the method further comprises the following steps: calculating the difference between the pay-off amount and the take-up amount in real time; when the difference exceeds a preset safety threshold interval, generating a stop command to control the spindle cutting groove wheel module to stop.

[0018] By adopting the above technical scheme, when the wire bow is abnormal (such as too large or slack), the machine is automatically stopped, avoiding problems such as wire breakage and equipment damage caused by out-of-control wire bow, and significantly reducing production risk and maintenance cost.

[0019] Preferably, the setting of the preset target comprises the following steps: matching a corresponding target wire bow height range according to the hardness of the material to be cut; wherein the target wire bow height range matched by the hard material is 0.5-10mm, and the target wire bow height range matched by the soft material is 1-20mm.

[0020] By adopting the above technical scheme, the optimal wire bow range is automatically matched for different hardness materials (such as hard materials such as sapphire and magnetic materials and soft materials such as semiconductor silicon), the cutting precision and efficiency are taken into account, and the system application range is expanded to various material processing scenarios.

[0021] Preferably, the step of dynamically adjusting the feed speed of the spindle cutting groove wheel module comprises the following steps: If the actual wire bow height is higher than the target value, the feed speed is reduced; If the actual wire bow height is lower than the target value, the feed speed is increased.

[0022] By adopting the above technical scheme, the linear feedback mechanism is used to quickly respond to the change of the wire bow, so that the cutting wire is always kept in the best tension state, and the quality fluctuation of the cutting surface and the material loss are avoided.

[0023] Preferably, after adjusting the feed speed, it further comprises: recomputing the wire bow height based on the real-time updated take-up and pay-off amount signal; iteratively performing the comparison and adjustment steps until the actual wire bow height is stabilized in the target interval.

[0024] By adopting the above technical scheme, a closed-loop control cycle is formed to continuously optimize the wire bow stability; and by iteratively adjusting in real time, dynamic interference in the cutting process is eliminated to ensure the precision consistency of long-time continuous cutting.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. Precise control of wire bow: real-time collection of take-up and pay-off amount data by displacement sensor, accurate calculation of wire bow height by combining wire bow calculation model, replacement of manual experience judgment, and realization of real-time precise monitoring and control of wire bow; 2. Optimization of cutting efficiency: the control module dynamically adjusts the feed speed through closed-loop comparison to keep the wire bow in the best range; 3. Improved production safety: the abnormal early warning module automatically stops when the difference between the take-up and pay-off amount exceeds the threshold, reducing equipment maintenance costs. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic diagram of a diamond multi-wire cutting machine control system of an embodiment of the present application.

[0027] Figure 2 is a closed-loop control logic block diagram of a diamond multi-wire cutting machine control system of an embodiment of the present application.

[0028] Figure 3 is a partial structural schematic diagram of a diamond multi-wire cutting machine control system of an embodiment of the present application, mainly showing a spindle cutting groove wheel module.

[0029] Figure 4 is a structure of a diamond multi-wire cutting machine control system of an embodiment of the present application, mainly showing a first take-up and pay-off wire storage module or a second take-up and pay-off wire storage module.

[0030] Figure 5 is a main flowchart of a control method of a diamond multi-wire cutting machine control method of an embodiment of the present application, mainly showing steps S1-S4.

[0031] Reference signs: 1, rack; 11, first wire storage roller; 12, second wire storage roller; 13, first guide roller; 14, second guide roller; 15, main shaft; 16, wire arranging roller; 2, material. DETAILED DESCRIPTION

[0032] The application will be further described in detail below with reference to all the drawings.

[0033] The application discloses a diamond multi-wire cutting machine control system. Figure 1 , Figure 2 The diamond multi-wire cutting machine control system comprises a rack 1, a diamond wire saw, a first wire winding and unwinding storage module, a second wire winding and unwinding storage module, a first wire guide roller, a second wire guide roller, a main shaft 15 cutting groove roller module and a control module. The second wire winding and unwinding storage module comprises a second wire storage roller 12 and a wire winding driving motor for driving the second wire storage roller 12 to rotate. The first wire winding and unwinding storage module comprises a first wire storage roller 11 and a wire unwinding driving motor for driving the first wire storage roller 11 to rotate. The main shaft 15 cutting groove roller module comprises a main shaft 15 and a main shaft 15 driving motor for driving the main shaft 15 to rotate. The second wire storage roller 12, the first wire storage roller 11 and the main shaft 15 are all rotationally arranged on the rack 1. The diamond wire saw is guided out of the first wire winding and unwinding storage module and sequentially passes through the first wire guide roller, the main shaft 15 cutting groove roller module and the second wire guide roller and is finally wound on the second wire winding and unwinding storage module.

[0034] A first displacement sensor is arranged on the first wire guide roller, and a second displacement sensor is arranged on the second wire guide roller. The first displacement sensor is used for detecting the wire winding and unwinding amount and outputting a first detection signal. The second displacement sensor is used for detecting the wire winding and unwinding amount and outputting a second detection signal. The wire winding driving motor, the wire unwinding driving motor and the main shaft 15 driving motor are all electrically connected with the control module. The control module can adjust the feeding speed of the main shaft 15 cutting groove roller module according to the detection signals of the second wire winding and unwinding storage module and the first wire winding and unwinding storage module, so as to realize accurate control of the actual wire bow height and make it reach the preset target. Because the control module can accurately master the wire bow state through calculation according to the real-time detection of the wire winding and unwinding amount information, the feeding of the main shaft 15 cutting groove roller module can be reasonably adjusted, and the subjectivity and limitation of manual judgment are avoided.

[0035] Referring to Figure 3 , Figure 4 The first wire winding and unwinding storage module comprises the first wire storage roller 11, and the second wire winding and unwinding storage module comprises the second wire storage roller 12. The wire winding driving motor, the wire unwinding driving motor and the main shaft 15 driving motor can all adopt servo driving motors. The multi-wire cutting machine moves through forward and reverse rotation. When the reverse rotation is performed, the original first wire storage roller 11 becomes the second wire storage roller 12, and the original second wire storage roller 12 becomes the first wire storage roller 11, and they are converted with each other.

[0036] Since the first wire storage roller 11 and the second wire storage roller 12 are both wheel-shaped, as the wire storage amount increases or decreases, the winding length of the wire storage wheel changes, and the number of rotations of the wire storage wheel cannot accurately measure the take-up amount and the pay-off amount, therefore, the first displacement sensor and the second displacement sensor are respectively arranged on the first wire guide wheel and the second wire guide wheel, the first wire guide wheel and the second wire guide wheel are provided with a wire slot, only one diamond wire saw is allowed to pass through, the wire guide wheel has a constant diameter, and the number of wires passing through can be accurately measured.

[0037] Specifically, the first displacement sensor is an absolute encoder, the detection shaft of which is fixed in the circumferential direction of the first wire guide wheel to realize detection of the second wire storage roller 12, and the first displacement sensor is connected to the control module through a data line and transmits the first detection signal to the control module.

[0038] The first displacement sensor detects the number of rotations of the first wire guide wheel and transmits the number of rotations to the control module, the control module can adopt a PLC controller, the controller stores the real-time take-up amount obtained by one rotation of the first wire guide wheel, and the controller obtains the take-up amount by calculation.

[0039] The first displacement sensor detects the take-up of the first wire guide wheel in real time and outputs the first detection signal, the second wire storage roller 12 rotates under the drive of the take-up drive motor, during which the diamond wire saw passes through the first wire guide wheel, and the take-up function is completed together, and the first displacement sensor provides the control module with key take-up amount data, so that the control module can perform subsequent calculation and adjustment.

[0040] In addition, the first take-up and pay-off wire storage module includes a second displacement sensor, the second displacement sensor is an absolute encoder, the detection shaft of which is fixed in the circumferential direction of the second wire guide wheel to realize detection of the first wire storage roller 11, and the second displacement sensor is connected to the control module through a data line and transmits the second detection signal to the control module.

[0041] The second displacement sensor detects the number of rotations of the second wire guide wheel and transmits the number of rotations to the control module, the control module can adopt a PLC controller, the controller stores the pay-off amount obtained by one rotation of the second wire guide wheel, and the controller obtains the pay-off amount by calculation.

[0042] The second displacement sensor detects the pay-off of the second wire guide wheel in real time and outputs the second detection signal, the first wire storage roller 11 rotates under the drive of the pay-off drive motor, during which the diamond wire saw passes through the second wire guide wheel, and the pay-off function is completed together, and the second displacement sensor provides the control module with key pay-off amount data, so that the control module can perform subsequent calculation and adjustment.

[0043] Specifically, the spindle 15 cutting groove wheel module includes two or more spindles 15, and one or more spindle 15 driving motors. In this embodiment, the spindle 15 cutting groove wheel module includes three spindles 15 and three spindle 15 driving motors for driving the spindles 15. The machine frame 1 is provided with a machine box. The spindles 15 are rotatably connected to the machine frame 1 through bearings and located in the machine box. The three spindles 15 form a triangular shape. A diamond wire saw is wound around the three spindles 15 (as shown in Figure 3 ). The first wire storage roller 11 and the second wire storage roller 12 are respectively arranged on the two sides of the three spindles 15 and located outside the machine box. The first wire guide wheel and the second wire guide wheel are also located outside the machine box. The diamond wire saw is guided out of the first wire storage roller 11 and sequentially passes through the first wire guide wheel, the three spindles 15, the second wire guide wheel, and is finally wound around the second wire storage roller 12. The first wire storage roller 11 and the first wire guide wheel, and the second wire storage roller 12 and the second wire guide wheel are both provided with a wire arranging assembly. The wire arranging assembly includes a wire arranging wheel 16 and a driving member for driving the wire arranging wheel 16 to reciprocate along the length direction of the wire storage roller. The driving member can be a reciprocating screw. The wire arranging assembly allows the diamond wire saw to be uniformly taken off or wound on the wire storage roller. When there is no material 2, the diamond wire saw has no wire bow. If there is material 2, there is a difference between the wire taking amount and the wire releasing amount. The diamond wire saw forms a wire bow on the material 2. According to the difference between the wire taking amount and the wire releasing amount, the height of the wire bow can be calculated.

[0044] The spindle 15 cutting groove wheel module works under the control of the control module. The control module calculates the approximate height of the wire bow according to the received first detection signal and second detection signal, compares it with the preset target, and then sends an adjustment instruction to the spindle 15 cutting groove wheel module to change the feed speed of the spindle 15, so as to control the height of the wire bow.

[0045] Referring to Figure 1 , Figure 2Specifically, the control module receives signals of the first displacement sensor and the second displacement sensor, calculates the current wire bow height in real time by using a preset wire bow calculation model, compares the calculation result with a preset target, and sends an adjustment signal to the spindle 15 cutting groove wheel module according to the comparison result to adjust the feeding speed of the spindle 15 cutting groove wheel module, so that the actual wire bow height approaches the preset target. The preset target can be input by the designer in advance, which can be set according to different materials 2 and material 2 heights, and is obtained through multiple experiments. Specifically, the controller includes a closed-loop control module, which adjusts the feeding speed by comparing the actual wire bow with the target wire bow value in real time. The closed-loop control module adopts a fuzzy PID algorithm and has a parameter self-tuning function, which is more suitable for non-linear cutting scenes than the traditional PID. The worker inputs the preset target into the PID controller, and the displacement sensor collects the pay-off and take-up data in real time to calculate the current wire bow height. The PID controller compares the two values to drive the spindle 15 driving motor to adjust the feeding speed of the spindle 15 cutting groove wheel module. The preset wire bow calculation model adopts H=K×(L1−L2), where L1 is the pay-off amount, and L2 is the take-up amount. The K value of the cutting type groove wheel is obtained through multiple experiments according to different materials 2. The wire number can be calculated by manually inputting the data of the wire saw PLC controller and the thickness of the cutting material 2 and the wire diameter. After wiring, the wire is reciprocated (forward and reverse rotation) for 2-20 times (100 meters-2000 meters each time), the wire number and the circumference of each circle are obtained by comparing the data of the guide roller passing through the wire, and the K value is obtained. The wiring circumference of the cutting groove wheel is detected by the first guide roller 13 and the second guide roller 14. The actual wire bow height calculated is a predicted value, which is normally within the preset safety threshold interval.

[0046] The control module further includes an abnormality early warning module. When the pay-off and take-up amount difference exceeds the preset safety threshold interval, the abnormality early warning module controls the spindle 15 cutting groove wheel module to stop. When the wire bow is abnormal (such as too large or loose), the machine stops automatically to avoid problems such as wire breakage and equipment damage caused by out-of-control wire bow, thereby reducing the production risk. The preset safety threshold interval can be input by the designer in advance and is obtained through multiple experiments.

[0047] In addition, the control module can match different preset targets according to the hardness of the material. For hard materials, a wire bow of 0.5-10 mm is used, and for soft materials, a wire bow of 1-20 mm is used.

[0048] The implementation principle of the diamond multi-wire cutting machine control system according to an embodiment of the application is that the displacement sensor collects pay-off and take-up data in real time, and the wire bow height is accurately calculated by combining a wire bow calculation model, replacing manual experience judgment. The control module dynamically adjusts the feeding speed through closed-loop comparison to realize real-time and accurate control of the wire bow, thereby effectively improving the cutting precision and efficiency.

[0049] The embodiment of the application discloses a diamond multi-wire saw control method. Referring to 5, a diamond multi-wire saw control method comprises: S1, acquiring the take-up amount, the pay-off amount and the K value.

[0050] Specifically, the take-up amount and the pay-off amount are acquired by the first displacement sensor of the second take-up and pay-off storage module and the second displacement sensor of the first take-up and pay-off storage module respectively. The first displacement sensor and the second displacement sensor can be the absolute encoder mentioned above, and the resolution is not less than 130000 pulses / turn. The pay-off amount L1 is converted by combining the circumference of the first storage roller 11, and the take-up amount L2 is converted by combining the circumference of the second storage roller 12. When acquiring data, the sensor should be in a normal working state, and the connection with the control module should be stable to ensure the accuracy and real-time performance of the data. In addition, the thickness of the cutting material 2 and the wire diameter are input by manual data, the number of wires can be calculated, the cutting material 2 is rotated back and forth (forward and reverse rotation) for 2-20 times (100 meters-2000 meters each time), the wire guide is compared, the data of the wire guide detection are compared, the number of wires and the circumference of each circle are obtained, and the K value is acquired.

[0051] S2, the current wire bow height is calculated in real time based on a preset wire bow calculation model H=K×(L1−L2), wherein L1 is the pay-off amount, and L2 is the take-up amount.

[0052] Specifically, the processor of the control module calls the calculation program stored in the memory, substitutes the acquired L1 and L2 data and the K value into the formula for calculation, and obtains the current wire bow height.

[0053] S3, the current wire bow height is compared with a preset target.

[0054] Specifically, the processor of the control module compares the calculated current wire bow height with the preset target stored in the memory, and determines the difference between the two.

[0055] S4, the feed speed of the spindle 15 cutting groove wheel module is dynamically adjusted according to the comparison result, so that the actual wire bow height approaches the preset target.

[0056] Specifically, if the current wire bow height is higher than the preset target, the control module sends a signal to reduce the feed speed of the spindle 15 cutting groove wheel module; if the current wire bow height is lower than the preset target, the control module sends a signal to increase the feed speed of the spindle 15 cutting groove wheel module. During the adjustment process, the power device of the spindle 15 cutting groove wheel module changes the rotation speed of the spindle 15 feed lifting motor and other parameters according to the signal of the control module. The PID control algorithm can be used to adjust the rotation speed of the spindle 15 feed lifting motor in real time through the servo driver.

[0057] S5, real-time calculating the difference between the wire-out amount and the wire-in amount.

[0058] Specifically, the control module continuously receives the data of the first displacement sensor and the second displacement sensor, and calculates the difference between the wire-in amount and the wire-out amount.

[0059] S6, when the difference exceeds the preset safety threshold interval, a stop command is generated to control the spindle 15 to cut the groove wheel module to stop.

[0060] Specifically, the abnormality warning module in the control module compares the calculated difference with the preset safety threshold interval, and when it exceeds the range, triggers a stop command to make the spindle 15 cut the groove wheel module stop working, and at the same time, an alarm can be issued through the alarm device.

[0061] S7, the setting of the preset target includes matching the corresponding target wire bow height range according to the hardness of the material to be cut.

[0062] Specifically, the hardness of the material can be detected by using an ultrasonic hardness sensor or an indentation hardness sensor, and the control module can look up the corresponding preset target range from the target wire bow height matching table according to the detected hardness. Among them, the target wire bow height range matched by hard materials is 0.5-10mm, and the target wire bow height range matched by soft materials is 1-20mm.

[0063] S8, the step of dynamically adjusting the feed speed of the spindle 15 cutting groove wheel module is refined as follows: if the actual wire bow height is higher than the target value, the feed speed is reduced; if the actual wire bow height is lower than the target value, the feed speed is increased.

[0064] Specifically, the control module sends corresponding adjustment signals to the power device of the spindle 15 cutting groove wheel module according to the comparison result, and the spindle 15 feed lifting motor adjusts the feed speed through speed adjustment and other ways.

[0065] S9, after adjusting the feed speed, it also includes recalculating the wire bow height based on the real-time updated wire-in and wire-out amount signals.

[0066] Specifically, the control module obtains the data of the first displacement sensor and the second displacement sensor again, and repeats the previous calculation steps to obtain the updated wire bow height.

[0067] S10, the comparison and adjustment steps are iteratively executed until the actual wire bow height stabilizes in the target interval.

[0068] Specifically, the control module continuously compares the updated wire bow height with the preset target, and adjusts the feed speed of the spindle 15 cutting groove wheel module according to the comparison result, and this process is repeatedly cycled until the actual wire bow height stabilizes in the preset target interval.

[0069] The implementation principle of the diamond multi-wire cutting machine control method provided in the embodiment of the application is that: the displacement sensor is used to collect the wire collecting and releasing amount data in real time, the wire bow height is accurately calculated by combining the wire bow calculation model to replace the manual experience judgment; the closed loop comparison is used to dynamically adjust the feeding speed to realize the real-time and accurate control of the wire bow, and the cutting precision and efficiency are effectively improved.

[0070] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A diamond multi-wire cutting machine control system, characterized by: The invention comprises a diamond wire saw, a first wire-reeling and wire-storing module, a second wire-reeling and wire-storing module, a first wire wheel, a second wire wheel, a main shaft (15) cutting groove wheel module and a control module. The diamond wire saw is wound on the first wire-reeling and wire-storing module and passes through the first wire wheel, the main shaft (15) cutting groove wheel module and the second wire wheel in sequence and is wound on the second wire-reeling and wire-storing module. The first wire wheel is provided with a first displacement sensor, and the second wire wheel is provided with a second displacement sensor. The first displacement sensor is used to detect the amount of wire-reeling and wire-storing and output a first detection signal. The second displacement sensor is used to detect the amount of wire-reeling and wire-storing and output a second detection signal. The first displacement sensor and the second displacement sensor are both electrically connected to the control module. The control module is used to receive the first detection signal and the second detection signal, calculate the current wire bow height in real time based on a preset wire bow calculation model, and adjust the feed speed of the main shaft (15) cutting groove wheel module according to the comparison result between the actual wire bow height and the preset target, so that the actual wire bow height reaches the preset target.

2. A diamond multi-wire saw control system according to claim 1, characterized in that: The control module comprises an abnormal warning module, and the abnormal warning module is used to control the main shaft (15) cutting groove wheel module to stop when the difference between the amount of wire retracted and released exceeds a preset safety threshold range.

3. The control system for a diamond multi-wire saw according to claim 1, characterized in that: The control module is used to match different preset targets according to the hardness of the material.

4. The control system for a diamond multi-wire saw according to claim 1, characterized in that: The preset wire bow calculation model adopts H=K×(L1−L2), where L1 is the wire payout amount and L2 is the wire take-up amount.

5. A diamond multi-wire saw control method, characterized in that: include: Get the take-up amount, pay-off amount and K value; The current line bow height is calculated in real time based on the preset line bow calculation model H=K×(L1−L2), where L1 is the pay-off amount and L2 is the take-up amount. comparing the current line bow height with a preset target; The feed speed of the main shaft (15) cutting groove wheel module is dynamically adjusted according to the comparison result so that the actual wire bow height approaches the preset target.

6. The method according to claim 5, characterized in that It is characterized by: further comprising: Calculate the difference between the pay-off amount and the take-up amount in real time; When the difference exceeds a preset safety threshold value, a shutdown command is generated to control the main shaft (15) cutting sheave module to shut down.

7. The method according to claim 5, characterized in that The setting of the preset target includes: Match the target wire bow height range according to the hardness of the material to be cut; Among them, the target line bow height range for hard material matching is 0.5-10mm, and the target line bow height range for soft material matching is 1-20mm.

8. The method according to claim 5, characterized in that The step of dynamically adjusting the feed speed of the main shaft (15) cutting sheave module comprises: If the actual wire bow height is higher than the target value, reduce the feed speed; If the actual wire bow height is lower than the target value, increase the feed speed.

9. The method according to any one of claims 5 to 8, characterized in that: After adjusting the feed speed, it also includes: Recalculate the wire bow height based on the real-time updated wire retraction and release signal; The comparison and adjustment steps are iteratively performed until the actual wire bow height is stabilized within the target range.

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