Search

CN-122007509-A - Slotting device for casting machining

CN122007509ACN 122007509 ACN122007509 ACN 122007509ACN-122007509-A

Abstract

The application is suitable for the technical field of machining, and provides a slotting device for casting machining, which comprises a controller, a chip stacking risk assessment module, a cooling water pressure control module and a hydraulic system, wherein the controller is used for taking the vibration intensity of a workpiece and the granularity of chips as influencing factors, constructing a chip stacking risk assessment model according to a metal removal rate index and a chip removal rate index and generating a chip stacking risk index, and the cooling water pressure control module is used for constructing a cooling water pressure control model according to the rated water pressure of cooling water, the chip stacking risk index and the current temperature of a cutter and outputting a cooling water pressure regulating value to the hydraulic system for regulation. The whole technical concept of the application is to construct a closed-loop feedback control system, and the key parameters in the processing process are subjected to multidimensional and real-time evaluation, and the technological parameters such as cooling water pressure and the like are intelligently adjusted based on the evaluation result, so that chip accumulation is effectively prevented, the processing quality and efficiency are improved, and the service life of a cutter is prolonged.

Inventors

  • CHEN TAO
  • FU JIGUANG
  • TENG LEI

Assignees

  • 泰安市新兴达机械制造有限公司

Dates

Publication Date
20260512
Application Date
20260316

Claims (9)

  1. 1. The utility model provides a fluting device is used in foundry goods processing, includes processing platform (1), processing platform (1) sliding connection has sliding seat (2), be provided with on processing platform (1) and drive sliding seat (2) horizontal migration's screw thread thrust subassembly (3), sliding seat (2) fixedly connected with electric lift seat (4), electric lift seat (4) fixedly connected with electric drill mechanism (5), electric drill mechanism (5) rotate through inside cutter and cut and carry out the fluting operation, electric drill mechanism (5) are connected with hydraulic system (6), and hydraulic system (6) can connect outside water route and electric drill mechanism (5) inside jet orifice, a serial communication port, still include the controller, the controller includes: The metal removal rate evaluation module is used for constructing a metal removal rate evaluation model according to the cutting depth of the cutter, the actual horizontal feeding speed of the cutter and the diameter of the cutter and outputting a metal removal rate index; The chip removal rate evaluation module is used for constructing a chip removal rate evaluation model according to the spiral angle of the cutter, the effective sectional area of the chip removal groove, the flow rate of cooling water and the stamping speed of the cooling water and outputting a chip removal rate index; The scrap stacking risk assessment module is used for taking the vibration intensity of the workpiece and the granularity of scraps as influence factors, constructing a scrap stacking risk assessment model according to the metal removal rate index and the scrap removal rate index, and generating a scrap stacking risk index; the cooling water pressure control module is used for building a cooling water pressure control model according to the rated water pressure of the cooling water, the risk index of the accumulated scraps and the current cutter temperature, and outputting a cooling water pressure regulating value to the hydraulic system (6) for regulation and control.
  2. 2. The slotting device for casting machining according to claim 1, wherein in the metal removal rate evaluation model: The metal removal rate index is equal to the product of the cutting depth index, the feed rate index and the tool diameter index, multiplied by a positive correlation factor associated with the unit cutting force of the material, and the enhancement factor is 1 plus the product of the unit cutting force index of the material and a preset coefficient.
  3. 3. The grooving apparatus for casting machining according to claim 2, wherein the cutting depth index is obtained by dividing an actual cutting depth of the tool by a maximum cutting depth allowed by the tool, the feed rate index is obtained by dividing an actual feed rate of the tool by a maximum horizontal feed rate allowed by the machine tool, the tool diameter index is obtained by dividing an actual diameter of the tool by a nominal diameter of the tool, and the material unit cutting force index is obtained by dividing a unit cutting force of the cutting material by a unit cutting force of the reference material.
  4. 4. The slotting device for casting machining according to claim 1, wherein in the chip removal rate evaluation model: the chip removal rate index is equal to the product of the helix angle index and the chip removal groove area index, multiplied by the cooling system flow index and the punch speed index, and multiplied by an attenuation factor associated with chip bulk density, which is 1 minus a compensation term associated with chip bulk density index.
  5. 5. The grooving apparatus for cast processing according to claim 4, wherein the helix angle index is obtained by dividing an actual helix angle of the tool by a helix angle of a basic tool, the flute area index is obtained by dividing an actual area of the tool by a basic flute area, the cooling system flow rate index is obtained by dividing an actual flow rate of the cooling system by an upper limit value of the cooling system flow rate, the punching speed index is obtained by dividing an actual punching speed of the cooling system by an upper limit value of the punching speed of the water flow, and the chip packing density index is obtained by dividing an actual chip packing density by a reference chip packing density.
  6. 6. The grooving apparatus for casting processing according to claim 1, wherein the workpiece vibration intensity index is obtained by dividing the actual vibration intensity of the workpiece by the vibration intensity safety threshold value, the chip morphology feature index is obtained by dividing a chip morphology feature value obtained by the vibration spectrum analysis of the casting by a reference feature value in an ideal chip state, and the chip piling risk assessment model is: The chip stacking risk index is obtained by dividing the product of the metal removal rate index and the chip form deterioration coefficient by the sum of the chip removal rate index and a minimum positive number and multiplying the product by the coefficient amplified by the part of the workpiece vibration intensity index exceeding the safety threshold, wherein the chip form deterioration coefficient is inversely proportional to the chip form characteristic index, and the coefficient is smaller than 1 and is inversely larger than 1 when the chip form is superior to an ideal state.
  7. 7. The slotting device for casting machining according to claim 1, wherein the tool temperature index is obtained by dividing the actual temperature of the tool by the maximum allowable operating temperature of the tool material, wherein the cooling water pressure control model: The hydraulic pressure regulating quantity value is a proportional integral term of rated hydraulic pressure multiplied by a deviation between a pile-up chip risk index and a preset target risk index, and multiplied by a coefficient amplified by a part of the cutter temperature index exceeding a safety threshold value.
  8. 8. The slotting device for casting machining according to claim 1, further comprising a tool horizontal feed speed adjusting module for constructing a tool horizontal feed speed adjusting model according to the scrap risk index and the actual tool horizontal feed speed, outputting the tool horizontal feed speed adjusting amount, and adjusting the tool horizontal feed speed accordingly.
  9. 9. The grooving apparatus for casting machining according to claim 8, wherein in the tool horizontal feed speed adjustment model, the tool horizontal feed speed adjustment amount is controlled in segments in accordance with a comparison result of the chip stacking risk index and the set threshold value: when the risk index is above the threshold and not in the recovery period, the feed speed reduction amount is determined based on the ratio of the current feed speed to the risk overrun; When the risk index is below the threshold and the safe time condition is met, determining an increase in feed speed based on a ratio of the current feed speed to a degree to which the risk is below; the feed speed adjustment amount is zero under the other conditions; wherein the recovery period and the safety time are set according to experience or historical data.

Description

Slotting device for casting machining Technical Field The invention belongs to the technical field of machining, and particularly relates to a slotting device for casting machining. Background In the casting manufacturing process, a grooving process is taken as a basic and key processing link, and the execution quality and efficiency of the grooving process have decisive influence on the product performance, the production cost and the subsequent assembly flow. The traditional slotting device is generally formed by a basic cutter driving unit and a manual or primary numerical control feeding mechanism. When the device is used for processing typical casting materials such as cast iron, cast steel and the like, particularly in deep groove or continuous groove processing operation, severe heat effect and complex chip form are generated in the cutting process due to uneven internal structure, remarkable hardness fluctuation and surface oxide layer interference of the materials. The chip management problem is particularly pronounced: The difference of the toughness of the materials ensures that the chips are in continuous strips or fine particles, and the local accumulation is easily formed in a processing area under the working condition of high-speed cutting or large feeding quantity by combining the design limitation of the spiral angle of a cutter and the space constraint of a chip removing groove. The accumulation not only prevents the normal contact between the cutter and the workpiece, causes the surface roughness to exceed the standard and the geometric dimension deviation to be increased, but also can aggravate the abrasion of the cutter cutting edge and even induce the tipping accident, thereby causing the unplanned shutdown and the scrapping of the workpiece. The chip stacking risk is essentially the result of the combined action of cutting heat accumulation, chip removal capacity attenuation and system dynamic instability, single index monitoring is easy to cause misjudgment, the root of the problem cannot be accurately positioned, and targeted intervention is implemented. Under the prior art frame, the device is difficult to realize the fine quantification and the prospective regulation and control of the processing state, and severely restricts the stability, the efficiency and the service life of a cutter in the casting slotting process. In view of the above, there is a need in the art for improvements. Disclosure of Invention The embodiment of the invention aims to provide a slotting device for casting machining, which aims to solve the problems. The invention is realized in this way, a slotting device for casting processing comprises a processing table, wherein the processing table is in sliding connection with a sliding seat, a thread thrust component for driving the sliding seat to horizontally move is arranged on the processing table, the sliding seat is fixedly connected with an electric lifting seat, the electric lifting seat is fixedly connected with an electric drill mechanism, the electric drill mechanism performs slotting operation through internal cutter rotation cutting, the electric drill mechanism is connected with a hydraulic system, the hydraulic system can be connected with an external waterway and an internal spraying hole of the electric drill mechanism, and the slotting device further comprises a controller, wherein the controller comprises: The metal removal rate evaluation module is used for constructing a metal removal rate evaluation model according to the cutting depth of the cutter, the actual horizontal feeding speed of the cutter and the diameter of the cutter and outputting a metal removal rate index; The chip removal rate evaluation module is used for constructing a chip removal rate evaluation model according to the spiral angle of the cutter, the effective sectional area of the chip removal groove, the flow rate of cooling water and the stamping speed of the cooling water and outputting a chip removal rate index; The scrap stacking risk assessment module is used for taking the vibration intensity of the workpiece and the granularity of scraps as influence factors, constructing a scrap stacking risk assessment model according to the metal removal rate index and the scrap removal rate index, and generating a scrap stacking risk index; The cooling water pressure control module is used for building a cooling water pressure control model according to the rated water pressure of the cooling water, the risk index of the accumulated scraps and the current cutter temperature, and outputting a cooling water pressure regulating value to the hydraulic system for regulation and control. Further technical scheme, in the metal removal rate evaluation model: The metal removal rate index is equal to the product of the cutting depth index, the feed rate index and the tool diameter index, multiplied by a positive correlation factor associated with the unit cutting force of the materi