CN111451732A - Integral combined machining process for parts - Google Patents
Integral combined machining process for parts Download PDFInfo
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- CN111451732A CN111451732A CN202010371177.8A CN202010371177A CN111451732A CN 111451732 A CN111451732 A CN 111451732A CN 202010371177 A CN202010371177 A CN 202010371177A CN 111451732 A CN111451732 A CN 111451732A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention relates to the technical field of part processing, in particular to a method for machining a workpiece, which comprises the following steps: step one, a plurality of single pieces are arranged on a piece of material in parallel, the height of each single piece is increased to 2MM, and preliminary treatment is carried out by the way that a fast-running wire is opened to be thick; step two, after the G right angle is processed to form a right angle, the subsequent process is carried out, the head is in heterotype opposite insertion, the surface is in discharge forming, and the part body is processed and formed according to PH by CNC; step three, performing EOB perforation treatment on the part processed in the step two; step four, processing the part head on the part processed in the step three by CNC; and step five, after the head is machined, machining the holes and the steps in an MC machining mode. Compared with the original single piece machining, the machining is finished in the main body after improvement, the head single piece discharge is changed into CNC integral machining, the cost is reduced, after the head CNC is in place, the original electrode design and machining save time by multiple times, only part of positions are required to be chamfered, the working time can be saved by 1100H according to 10 sets of die calculation every year, and the machining efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of part machining, in particular to an integral combined machining process for parts.
Background
The front die head part and the rear die head part of the part are inserted oppositely by the special-shaped surfaces in the machining process, the requirements on the position degree and the quality of the part are high, the part is assembled and produced to be qualified, the machining precision and the consistency of the part are good, the integral machining cost of the part is high, the sequence of the processes is considered during machining, the maximum optimization process is realized, and the quality consistency and the shortest machining period can be guaranteed.
Therefore, the challenge to the machining precision and quality of the die is highly required, the existing machining is to make a single piece, the appearance and the inner hole of the main body are cut, the single piece is ground to be accurate to each step position, the head is subjected to discharge forming, each process is completed independently, the consistency of the control quality is difficult during machining of each process, the technical requirement to a machining worker is high, the method has abnormal risks, multiple-process cross machining is carried out on the head of the die part, once one process is abnormal, the quality of the whole part is abnormal, the consistency of the machining of the same batch of parts cannot be the same, products cannot be used easily due to the size error during assembly, and the machining efficiency and the machining quality of the products are greatly influenced. The existing process is easy to cause the discharge machining of all the heads, so that a plurality of electrodes are disassembled, the design and machining cost is increased, the single piece machining efficiency cannot be kept up, no allowance is reserved in the height direction, and once a problem occurs in one position, the problem cannot be solved, so that the whole part combination machining process is provided.
Disclosure of Invention
The invention aims to provide an integral part combination machining process to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an integral combined machining process for parts comprises the following steps:
step one, a plurality of single pieces are arranged on a piece of material in parallel, the height of each single piece is increased to 2MM, and preliminary treatment is carried out by the way that a fast-running wire is opened to be thick;
step two, after the G right angle is processed to form a right angle, the subsequent process is carried out, the head is in heterotype opposite insertion, the surface is in discharge forming, and the part body is processed and formed according to PH by CNC;
step three, performing EOB perforation treatment on the part processed in the step two;
step four, processing the part head on the part processed in the step three by CNC;
step five, after the head is machined, machining the holes and the steps in an MC machining mode;
step six, grinding and slicing the head, the hole and the step after the processing is finished, and in the process, the height direction is accurately grasped to ensure the height consistency, and then the total height is accurately processed;
seventhly, machining the tail part of the part reversely hung on the part machined in the sixth step by using the CNC;
step eight, performing EDM machining on the parts machined in the step seven; processing the corner cleaning position of the part;
and step nine, finishing each process once, reducing the clamping times, ensuring the consistency according to the PH, then carrying out quality detection on the whole parts processed in the steps, and delivering the parts to a factory if the quality detection has no problem.
Preferably, the speed of the fast wire-moving and the rough wire-opening in the first step is 8-10 m/s, and the reciprocating linear motion is adopted.
Preferably, the EOB perforation in the three steps is performed by a miniature electric drill, and the rotating speed of a drill bit of the electric drill is kept at 100-300 r/s.
As a preferable aspect of the present invention, the temperature between the two electrodes of the EDM machining in the step eight is 2500 to 3500 ℃.
Preferably, the step processing in the sixth step has a processing depth of 0.085mm to 0.155 mm.
Preferably, the quality detection in the ninth step includes size accuracy detection, shape accuracy detection, straightness detection, flatness detection, and position accuracy detection.
Preferably, the dimensional accuracy detection is carried out by using a vernier caliper, a percentile ruler and the like, if the measured dimension is between the maximum limit dimension and the minimum limit dimension, the part is qualified, if the measured dimension is larger than the maximum entity dimension, the part is unqualified and needs to be further processed, and if the measured dimension is smaller than the minimum entity dimension, the part is scrapped.
Preferably, the position precision detection is detected by a vernier caliper, a dial indicator and a square, and comprises parallelism detection and perpendicularity detection, wherein the parallelism detection is to place a detected part on a flat plate, the dial indicator is moved, the measured surface is measured according to the specified measurement, the difference value between the maximum reading and the minimum reading of the dial indicator is the parallelism error, the perpendicularity detection is to attach the wide side of a 90-degree angle ruler to the reference side, measure the gap between the detected plane and the narrow side of the 90-degree angle ruler, and the method measures the same straightness error, namely the perpendicularity error.
Preferably, the straightness detection is performed by adopting a knife-edge-shaped ruler, the knife-edge-shaped ruler is contacted with a measured plane along a given direction, the maximum gap between the knife-edge-shaped ruler and the measured plane is the minimum, the measured maximum gap is the straightness error of the plane in the direction of the prime line, and when the gap is small, the straightness can be estimated according to the optical gap; when the gap is large, a feeler gauge can be used for measurement.
Preferably, the flatness detection is performed by adopting a knife-edge-shaped ruler, the knife-edge-shaped ruler is contacted with a measured plane, and the reading value of the maximum gap in the knife-edge-shaped ruler is detected in various aspects, namely the flatness error.
Compared with the prior art, the invention has the beneficial effects that:
compared with the original single piece machining, the machining is completed in the main body after improvement, the head single piece is changed into CNC integral machining through discharge, the working efficiency is improved, the working cost is reduced, after the head CNC is in place, the original electrode design and machining can be saved by times, only part of positions are required to be chamfered, 110H can be saved by one set of die approximately, 1100H in working time can be saved according to 10 sets of die calculation every year, and the machining efficiency and the working quality are greatly improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme provided by the invention is as follows:
example 1
An integral combined machining process for parts comprises the following steps:
step one, a plurality of single pieces are arranged on a piece of material in parallel, the height of each single piece is increased to 2MM, and preliminary treatment is carried out by the way that a fast-running wire is opened to be thick;
step two, after the G right angle is processed to form a right angle, the subsequent process is carried out, the head is in heterotype opposite insertion, the surface is in discharge forming, and the part body is processed and formed according to PH by CNC;
step three, performing EOB perforation treatment on the part processed in the step two;
step four, processing the part head on the part processed in the step three by CNC;
step five, after the head is machined, machining the holes and the steps in an MC machining mode;
step six, grinding and slicing the head, the hole and the step after the processing is finished, and in the process, the height direction is accurately grasped to ensure the height consistency, and then the total height is accurately processed;
seventhly, machining the tail part of the part reversely hung on the part machined in the sixth step by using the CNC;
step eight, performing EDM machining on the parts machined in the step seven; processing the corner cleaning position of the part;
and step nine, finishing each process once, reducing the clamping times, ensuring the consistency according to the PH, then carrying out quality detection on the whole parts processed in the steps, and delivering the parts to a factory if the quality detection has no problem.
As the optimization of the invention, the speed of the fast wire-feeding and the coarse wire-feeding in the step one is 8m/s, and the reciprocating linear motion is adopted.
Preferably, the EOB perforation of the step three is performed by a miniature electric drill, and the rotating speed of a drill bit of the electric drill is kept at 100 r/s.
As a preferred aspect of the present invention, the temperature between the two electrodes of the EDM machining in step eight is 2500 ℃.
Preferably, the step processing in the sixth step has a processing depth of 0.085 mm.
Preferably, the quality detection in the ninth step includes size accuracy detection, shape accuracy detection, straightness detection, flatness detection, and position accuracy detection.
Preferably, the dimensional accuracy detection is carried out by using a vernier caliper, a percentile ruler and the like, if the measured dimension is between the maximum limit dimension and the minimum limit dimension, the part is qualified, if the measured dimension is larger than the maximum entity dimension, the part is unqualified and needs to be further processed, and if the measured dimension is smaller than the minimum entity dimension, the part is scrapped.
Preferably, the position precision detection is detected by a vernier caliper, a dial indicator and a square, and comprises parallelism detection and perpendicularity detection, wherein the parallelism detection is to place a detected part on a flat plate, the dial indicator is moved, the measured surface is measured according to the specified measurement, the difference value between the maximum reading and the minimum reading of the dial indicator is the parallelism error, the perpendicularity detection is to attach the wide side of a 90-degree angle ruler to the reference side, measure the gap between the detected plane and the narrow side of the 90-degree angle ruler, and the method measures the same straightness error, namely the perpendicularity error.
Preferably, the straightness detection is performed by adopting a knife-edge-shaped ruler, the knife-edge-shaped ruler is contacted with a measured plane along a given direction, the maximum gap between the knife-edge-shaped ruler and the measured plane is the minimum, the measured maximum gap is the straightness error of the plane in the direction of the prime line, and when the gap is small, the straightness can be estimated according to the optical gap; when the gap is large, a feeler gauge can be used for measurement.
Preferably, the flatness detection is performed by adopting a knife-edge-shaped ruler, the knife-edge-shaped ruler is contacted with a measured plane, and the reading value of the maximum gap in the knife-edge-shaped ruler is detected in various aspects, namely the flatness error.
Example 2
An integral combined machining process for parts comprises the following steps:
step one, a plurality of single pieces are arranged on a piece of material in parallel, the height of each single piece is increased to 2MM, and preliminary treatment is carried out by the way that a fast-running wire is opened to be thick;
step two, after the G right angle is processed to form a right angle, the subsequent process is carried out, the head is in heterotype opposite insertion, the surface is in discharge forming, and the part body is processed and formed according to PH by CNC;
step three, performing EOB perforation treatment on the part processed in the step two;
step four, processing the part head on the part processed in the step three by CNC;
step five, after the head is machined, machining the holes and the steps in an MC machining mode;
step six, grinding and slicing the head, the hole and the step after the processing is finished, and in the process, the height direction is accurately grasped to ensure the height consistency, and then the total height is accurately processed;
seventhly, machining the tail part of the part reversely hung on the part machined in the sixth step by using the CNC;
step eight, performing EDM machining on the parts machined in the step seven; processing the corner cleaning position of the part;
and step nine, finishing each process once, reducing the clamping times, ensuring the consistency according to the PH, then carrying out quality detection on the whole parts processed in the steps, and delivering the parts to a factory if the quality detection has no problem.
As the optimization of the invention, the speed of the fast wire-feeding and the coarse wire-feeding in the step one is 9m/s and the reciprocating linear motion is adopted.
Preferably, the EOB perforation of the step three is performed by a miniature electric drill, and the rotating speed of a drill bit of the electric drill is kept at 200 r/s.
As a preferred aspect of the present invention, the temperature between the two electrodes of the EDM machining in step eight is 3000 ℃.
Preferably, the step processing in the sixth step has a processing depth of 0.12 mm.
Preferably, the quality detection in the ninth step includes size accuracy detection, shape accuracy detection, straightness detection, flatness detection, and position accuracy detection.
Preferably, the dimensional accuracy detection is carried out by using a vernier caliper, a percentile ruler and the like, if the measured dimension is between the maximum limit dimension and the minimum limit dimension, the part is qualified, if the measured dimension is larger than the maximum entity dimension, the part is unqualified and needs to be further processed, and if the measured dimension is smaller than the minimum entity dimension, the part is scrapped.
Preferably, the position precision detection is detected by a vernier caliper, a dial indicator and a square, and comprises parallelism detection and perpendicularity detection, wherein the parallelism detection is to place a detected part on a flat plate, the dial indicator is moved, the measured surface is measured according to the specified measurement, the difference value between the maximum reading and the minimum reading of the dial indicator is the parallelism error, the perpendicularity detection is to attach the wide side of a 90-degree angle ruler to the reference side, measure the gap between the detected plane and the narrow side of the 90-degree angle ruler, and the method measures the same straightness error, namely the perpendicularity error.
Preferably, the straightness detection is performed by adopting a knife-edge-shaped ruler, the knife-edge-shaped ruler is contacted with a measured plane along a given direction, the maximum gap between the knife-edge-shaped ruler and the measured plane is the minimum, the measured maximum gap is the straightness error of the plane in the direction of the prime line, and when the gap is small, the straightness can be estimated according to the optical gap; when the gap is large, a feeler gauge can be used for measurement.
Preferably, the flatness detection is performed by adopting a knife-edge-shaped ruler, the knife-edge-shaped ruler is contacted with a measured plane, and the reading value of the maximum gap in the knife-edge-shaped ruler is detected in various aspects, namely the flatness error.
Example 3
An integral combined machining process for parts comprises the following steps:
step one, a plurality of single pieces are arranged on a piece of material in parallel, the height of each single piece is increased to 2MM, and preliminary treatment is carried out by the way that a fast-running wire is opened to be thick;
step two, after the G right angle is processed to form a right angle, the subsequent process is carried out, the head is in heterotype opposite insertion, the surface is in discharge forming, and the part body is processed and formed according to PH by CNC;
step three, performing EOB perforation treatment on the part processed in the step two;
step four, processing the part head on the part processed in the step three by CNC;
step five, after the head is machined, machining the holes and the steps in an MC machining mode;
step six, grinding and slicing the head, the hole and the step after the processing is finished, and in the process, the height direction is accurately grasped to ensure the height consistency, and then the total height is accurately processed;
seventhly, machining the tail part of the part reversely hung on the part machined in the sixth step by using the CNC;
step eight, performing EDM machining on the parts machined in the step seven; processing the corner cleaning position of the part;
and step nine, finishing each process once, reducing the clamping times, ensuring the consistency according to the PH, then carrying out quality detection on the whole parts processed in the steps, and delivering the parts to a factory if the quality detection has no problem.
As the optimization of the invention, the speed of the fast wire-feeding and the coarse wire-feeding in the step one is 10m/s and the reciprocating linear motion is adopted.
Preferably, the EOB perforation of the step three is performed by a miniature electric drill, and the rotating speed of a drill bit of the electric drill is kept at 300 r/s.
As a preferable aspect of the present invention, the temperature between the two electrodes of the EDM machining in the step eight is 2500 to 3500 ℃.
Preferably, the step processing in the sixth step has a processing depth of 0.155 mm.
Preferably, the quality detection in the ninth step includes size accuracy detection, shape accuracy detection, straightness detection, flatness detection, and position accuracy detection.
Preferably, the dimensional accuracy detection is carried out by using a vernier caliper, a percentile ruler and the like, if the measured dimension is between the maximum limit dimension and the minimum limit dimension, the part is qualified, if the measured dimension is larger than the maximum entity dimension, the part is unqualified and needs to be further processed, and if the measured dimension is smaller than the minimum entity dimension, the part is scrapped.
Preferably, the position precision detection is detected by a vernier caliper, a dial indicator and a square, and comprises parallelism detection and perpendicularity detection, wherein the parallelism detection is to place a detected part on a flat plate, the dial indicator is moved, the measured surface is measured according to the specified measurement, the difference value between the maximum reading and the minimum reading of the dial indicator is the parallelism error, the perpendicularity detection is to attach the wide side of a 90-degree angle ruler to the reference side, measure the gap between the detected plane and the narrow side of the 90-degree angle ruler, and the method measures the same straightness error, namely the perpendicularity error.
Preferably, the straightness detection is performed by adopting a knife-edge-shaped ruler, the knife-edge-shaped ruler is contacted with a measured plane along a given direction, the maximum gap between the knife-edge-shaped ruler and the measured plane is the minimum, the measured maximum gap is the straightness error of the plane in the direction of the prime line, and when the gap is small, the straightness can be estimated according to the optical gap; when the gap is large, a feeler gauge can be used for measurement.
Preferably, the flatness detection is performed by adopting a knife-edge-shaped ruler, the knife-edge-shaped ruler is contacted with a measured plane, and the reading value of the maximum gap in the knife-edge-shaped ruler is detected in various aspects, namely the flatness error.
The data obtained from 3 sets of examples were compared with data obtained from conventional processing, and the comparative data were as follows:
the comparison of the experimental data shows that the total processing time of the integral part combined processing technology provided by the invention is obviously reduced compared with the traditional technology, the production efficiency of finish machining of the die is effectively improved, and the production cost of the product is reduced.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The integral combined machining process of the parts is characterized by comprising the following steps of: the method comprises the following steps:
step one, a plurality of single pieces are arranged on a piece of material in parallel, the height of each single piece is increased to 2MM, and preliminary treatment is carried out by the way that a fast-running wire is opened to be thick;
step two, after the G right angle is processed to form a right angle, the subsequent process is carried out, the head is in heterotype opposite insertion, the surface is in discharge forming, and the part body is processed and formed according to PH by CNC;
step three, performing EOB perforation treatment on the part processed in the step two;
step four, processing the part head on the part processed in the step three by CNC;
step five, after the head is machined, machining the holes and the steps in an MC machining mode;
step six, grinding and slicing the head, the hole and the step after the processing is finished, and in the process, the height direction is accurately grasped to ensure the height consistency, and then the total height is accurately processed;
seventhly, machining the tail part of the part reversely hung on the part machined in the sixth step by using the CNC;
step eight, performing EDM machining on the parts machined in the step seven; processing the corner cleaning position of the part;
and step nine, finishing each process once, reducing the clamping times, ensuring the consistency according to the PH, then carrying out quality detection on the whole parts processed in the steps, and delivering the parts to a factory if the quality detection has no problem.
2. The process for integrally assembling and machining parts according to claim 1, wherein: the speed of the fast wire-moving and the rough wire-moving in the step one is 8-10 m/s, and the reciprocating linear motion is adopted.
3. The integral combination machining process for parts as claimed in claim 2, wherein: and (3) piercing the EOB in the three steps by adopting a miniature electric drill, wherein the rotating speed of a drill bit of the electric drill is kept at 100-300 r/s.
4. The process for integrally assembling and machining parts according to claim 1, wherein: the temperature between the two electrodes of EDM machining in step eight is 2500 to 3500 ℃.
5. The process for integrally assembling and machining parts according to claim 1, wherein: and the processing depth of the step processing in the sixth step is 0.085mm-0.155 mm.
6. The process for integrally assembling and machining parts according to claim 1, wherein: the quality detection in the ninth step comprises size precision detection, shape precision detection, straightness detection, flatness detection and position precision detection.
7. The process for integrally assembling and machining parts according to claim 6, wherein: the dimension precision detection is usually carried out by using a vernier caliper, a percentile ruler and the like, if the measured dimension is between the maximum limit dimension and the minimum limit dimension, the part is qualified, if the measured dimension is larger than the maximum entity dimension, the part is unqualified and needs to be further processed, and if the measured dimension is smaller than the minimum entity dimension, the part is scrapped.
8. The process for integrally assembling and machining parts according to claim 6, wherein: the position precision detection adopts a vernier caliper, a dial indicator and a square to detect, and comprises parallelism detection and perpendicularity detection, wherein the parallelism detection is to place a detected part on a flat plate, the dial indicator is moved to measure the detected part according to the specified measurement on the detected surface, the difference value between the maximum reading and the minimum reading of the dial indicator is the parallelism error, the perpendicularity detection is to attach the wide edge of a 90-degree angle square to a reference edge to measure the gap between the detected plane and the narrow edge of the 90-degree angle square, and the measurement of the same straightness error is carried out by the method, and the maximum gap is the perpendicularity error.
9. The process for integrally assembling and machining parts according to claim 1, wherein: the straightness detection adopts a knife edge-shaped ruler for detection, the knife edge-shaped ruler is contacted with a measured plane along a given direction, the maximum gap between the knife edge-shaped ruler and the measured plane is the minimum, the measured maximum gap is the straightness error of the plane in the direction of the prime line, and when the gap is small, the straightness can be estimated according to the light gap; when the gap is large, a feeler gauge can be used for measurement.
10. The process for integrally assembling and machining parts according to claim 1, wherein: and the flatness detection adopts a knife edge-shaped ruler for detection, the knife edge-shaped ruler is contacted with a plane to be detected, and the reading value of the maximum gap in the knife edge-shaped ruler is detected in various aspects, namely the flatness error.
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| WO2001070450A1 (en) * | 2000-03-23 | 2001-09-27 | Stewart David H | Method for manufacturing a near net-shape mold |
| CN104741498A (en) * | 2015-04-01 | 2015-07-01 | 航天精工股份有限公司 | Combined-type chamfering mold core and processing method thereof |
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