CN111451732A - An integral combined machining process of parts - Google Patents

Abstract

The invention relates to the technical field of parts processing, in particular to a method comprising the following steps: step 1, arranging a plurality of single pieces on a piece of material, increasing the height to 2MM, and roughing by fast-feeding wire for preliminary processing; step 2, G Right-angle machining After the shape is right-angled, it enters the post-process, the head is shaped and inserted, the surface is EDM, and the CNC on the main body of the part is processed and formed by PH; Step 3, perform EOB perforation on the parts processed in Step 2; Step 4, The head of the part is processed by CNC on the part processed in step 3; in step 5, after the head is processed, the hole and each step are processed by MC processing. Compared with the original single-piece processing, the improvement is completed in the main body. The single-piece discharge of the head is changed to CNC overall processing, which reduces the cost. After the head CNC is in place, the original electrode design and processing saves several times of time, only It is only necessary to clear the corners in some positions. According to 10 sets of molds per year, 1100H of man-hours can be saved, which greatly improves the processing efficiency.

Description

An integral combined machining process of parts

technical field

The invention relates to the technical field of parts processing, in particular to an integral combined processing technology of parts.

Background technique

In the machining process, it is often encountered that the front and rear die heads of this type of parts are inserted facing each other, and the position and quality requirements are very high. In order to ensure the qualified production of parts, the machining accuracy and consistency of the parts must be good. , and the overall processing cost of the parts is very high. The process sequence must be considered during processing, and the maximum optimization process can be achieved to ensure quality consistency and the shortest processing cycle.

Therefore, there are high requirements for the machining accuracy and quality of the mold. The existing machining is to make a single piece, cut out the shape and inner hole of the main body, grind the single piece to align with each step, and discharge the head to form each process. , It is difficult to control the consistency of quality during processing in each process, and the technical requirements for processing personnel are very high. There is an abnormal risk in this method because the head of the mold part is multi-process cross-processed. Once there is an abnormality in the processing of one process, It will cause anomalies to the quality of the entire part. The consistency of the processing of the same batch of parts cannot be the same for every piece, and the product is easy to be unusable due to dimensional errors during assembly, which greatly affects the processing efficiency and processing quality of the product. . The existing process is easy to lead to all the electrical discharge machining of the head, resulting in the removal of multiple electrodes, increasing the design and processing costs, the single-piece processing efficiency cannot keep up, and there is no reserved margin in the height direction. In view of this, we propose an integral combined machining process of parts.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an integral combined machining process of parts to solve the problems raised in the above-mentioned background art.

To achieve the above object, the present invention provides the following technical solutions:

An integral combined machining process of parts, comprising the following steps:

Step 1. Arrange multiple single pieces on one piece of material side by side, increase the height to 2MM, and conduct preliminary processing by fast-moving wire cutting;

Step 2. After the right-angle machining of the shape of G, the post-process is entered, the head is shaped to be inserted, the surface is formed by electric discharge, and the CNC on the main body of the part is processed and formed according to PH;

Step 3: EOB perforation is performed on the parts processed in Step 2;

Step 4. The parts processed in step 3 are processed by CNC on the head of the parts;

Step 5. After the head is processed, the holes and each step are processed by MC processing;

Step 6. After the processing of the head, holes and steps is completed, the grinding and slicing processing is carried out. During this process, the height direction is accurately grasped to ensure the height consistency, and then the total height processing is carried out;

Step 7. The parts processed in step 6 are processed by CNC on the tail of the parts;

Step 8. The parts processed in Step 7 are processed by EDM; the corners of the parts are processed;

Step 9. After each process is processed at one time, reduce the number of clamping times, and ensure consistency according to PH. Then, the overall quality of the parts processed through the above steps will be inspected. If there is no problem in the quality inspection, it will be delivered from the factory.

As a preference of the present invention, the speed of the fast-moving wire in step 1 is 8-10 m/s, and it is a reciprocating linear motion.

As a preference of the present invention, the EOB perforation in the third step is performed with a micro electric drill, and the drill bit rotation speed of the electric drill is maintained at 100-300 r/s.

As a preference of the present invention, the temperature between the two electrodes in the EDM process in step eight is 2500°C to 3500°C.

As a preference of the present invention, the processing depth of the step processing in step 6 is 0.085mm-0.155mm.

As a preferred aspect of the present invention, the quality inspection in step 9 includes dimensional accuracy inspection, shape accuracy inspection, straightness inspection, flatness inspection, and position accuracy inspection.

As a preference of the present invention, the dimensional accuracy test is usually carried out with a vernier caliper, a centimeter, etc. If the measured size is between the maximum limit size and the minimum limit size, the part is qualified; if the measured size is larger than the maximum physical size, the part is unqualified. Further processing is required. If the measured size is smaller than the minimum physical size, the part will be scrapped.

As a preference of the present invention, the positional accuracy detection adopts vernier calipers, dial indicators, and right angles to test, including parallelism detection and perpendicularity detection, wherein the parallelism detection is to place the tested part on a flat plate, move the dial indicator, and then move the dial indicator. Measure the surface to be measured according to the specified measurement. The difference between the maximum and minimum readings of the dial indicator is the parallelism error. The perpendicularity detection is to place the wide side of the 90° angle ruler against the reference side, and measure the measured plane and the 90° angle ruler. For the gap between the narrow sides, the method is the same as the measurement of the straightness error, and the maximum gap is the verticality error.

As a preference of the present invention, the straightness detection adopts a knife-edge straightedge to detect, and the knife-edge straightedge is in contact with the measured plane along a given direction, and the maximum gap between the two is minimized, and the measured maximum gap is For this reason, the straightness error of the plane in the direction of the element line, when the gap is small, can be estimated according to the optical gap; when the gap is large, it can be measured with a feeler gauge.

As a preferred embodiment of the present invention, the flatness detection is carried out with a knife-edge straightedge. The knife-edge straightedge is contacted with the measured plane, and the reading value of the largest gap is detected in all aspects, which is the flatness error.

Compared with the prior art, the beneficial effects of the present invention are:

Compared with the original single-piece processing, the improvement is completed in the main body. The single-piece discharge of the head is changed to CNC overall processing, which improves the work efficiency and reduces the work cost. After the head CNC is in place, the original electrode design and Processing can save several times of time, just need to clear the corners of some positions, one set of molds can save about 110H, and 10 sets of molds per year can save 1100H of man-hours, which greatly improves the processing efficiency and work quality.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Technical scheme provided by the present invention:

Example 1

An integral combined machining process of parts, comprising the following steps:

Step 1. Arrange multiple single pieces on one piece of material side by side, increase the height to 2MM, and conduct preliminary processing by fast-moving wire cutting;

Step 2. After the right-angle machining of the shape of G, the post-process is entered, the head is shaped to be inserted, the surface is formed by electric discharge, and the CNC on the main body of the part is processed and formed according to PH;

Step 3: EOB perforation is performed on the parts processed in Step 2;

Step 4. The parts processed in step 3 are processed by CNC on the head of the parts;

Step 5. After the head is processed, the holes and each step are processed by MC processing;

Step 6. After the processing of the head, holes and steps is completed, the grinding and slicing processing is carried out. During this process, the height direction is accurately grasped to ensure the height consistency, and then the total height processing is carried out;

Step 7. The parts processed in step 6 are processed by CNC on the tail of the parts;

Step 8. The parts processed in Step 7 are processed by EDM; the corners of the parts are processed;

Step 9. After each process is processed at one time, reduce the number of clamping times, and ensure consistency according to PH. Then, the overall quality of the parts processed through the above steps will be inspected. If there is no problem in the quality inspection, it will be delivered from the factory.

As a preference of the present invention, the speed of the fast-moving wire in step 1 is 8 m/s, and it is a reciprocating linear motion.

As a preference of the present invention, the EOB perforation in the third step is performed with a micro electric drill, and the drill bit rotation speed of the electric drill is maintained at 100r/s.

As a preference of the present invention, the temperature between the two electrodes in the EDM process in step eight is 2500°C.

As a preference of the present invention, the processing depth of the step processing in step 6 is 0.085 mm.

As a preferred aspect of the present invention, the quality inspection in step 9 includes dimensional accuracy inspection, shape accuracy inspection, straightness inspection, flatness inspection, and position accuracy inspection.

As a preference of the present invention, the dimensional accuracy test is usually carried out with a vernier caliper, a centimeter, etc. If the measured size is between the maximum limit size and the minimum limit size, the part is qualified; if the measured size is larger than the maximum physical size, the part is unqualified. Further processing is required. If the measured size is smaller than the minimum physical size, the part will be scrapped.

As a preference of the present invention, the positional accuracy detection adopts vernier calipers, dial indicators, and right angles to test, including parallelism detection and perpendicularity detection, wherein the parallelism detection is to place the tested part on a flat plate, move the dial indicator, and then move the dial indicator. Measure the surface to be measured according to the specified measurement. The difference between the maximum and minimum readings of the dial indicator is the parallelism error. The perpendicularity detection is to place the wide side of the 90° angle ruler against the reference side, and measure the measured plane and the 90° angle ruler. For the gap between the narrow sides, the method is the same as the measurement of the straightness error, and the maximum gap is the verticality error.

As a preference of the present invention, the straightness detection adopts a knife-edge straightedge to detect, and the knife-edge straightedge is in contact with the measured plane along a given direction, and the maximum gap between the two is minimized, and the measured maximum gap is For this reason, the straightness error of the plane in the direction of the element line, when the gap is small, can be estimated according to the optical gap; when the gap is large, it can be measured with a feeler gauge.

As a preferred embodiment of the present invention, the flatness detection is carried out with a knife-edge straightedge. The knife-edge straightedge is contacted with the measured plane, and the reading value of the largest gap is detected in all aspects, which is the flatness error.

Example 2

An integral combined machining process of parts, comprising the following steps:

Step 1. Arrange multiple single pieces on one piece of material side by side, increase the height to 2MM, and conduct preliminary processing by fast-moving wire cutting;

Step 2. After the right-angle machining of the shape of G, the post-process is entered, the head is shaped to be inserted, the surface is formed by electric discharge, and the CNC on the main body of the part is processed and formed according to PH;

Step 3: EOB perforation is performed on the parts processed in Step 2;

Step 4. The parts processed in step 3 are processed by CNC on the head of the parts;

Step 5. After the head is processed, the holes and each step are processed by MC processing;

Step 6. After the processing of the head, holes and steps is completed, the grinding and slicing processing is carried out. During this process, the height direction is accurately grasped to ensure the height consistency, and then the total height processing is carried out;

Step 7. The parts processed in step 6 are processed by CNC on the tail of the parts;

Step 8. The parts processed in Step 7 are processed by EDM; the corners of the parts are processed;

Step 9. After each process is processed at one time, reduce the number of clamping times, and ensure consistency according to PH. Then, the overall quality of the parts processed through the above steps will be inspected. If there is no problem in the quality inspection, it will be delivered from the factory.

As a preference of the present invention, the speed of the fast-moving wire in step 1 is 9 m/s, and it is a reciprocating linear motion.

As a preference of the present invention, the EOB perforation in the third step is performed with a micro electric drill, and the drill bit rotation speed of the electric drill is maintained at 200r/s.

As a preference of the present invention, the temperature between the two electrodes in the EDM process in step eight is 3000°C.

As a preference of the present invention, the processing depth of the step processing in step 6 is 0.12 mm.

As a preferred aspect of the present invention, the quality inspection in step 9 includes dimensional accuracy inspection, shape accuracy inspection, straightness inspection, flatness inspection, and position accuracy inspection.

As a preference of the present invention, the dimensional accuracy test is usually carried out with a vernier caliper, a centimeter, etc. If the measured size is between the maximum limit size and the minimum limit size, the part is qualified; if the measured size is larger than the maximum physical size, the part is unqualified. Further processing is required. If the measured size is smaller than the minimum physical size, the part will be scrapped.

As a preference of the present invention, the positional accuracy detection adopts vernier calipers, dial indicators, and right angles to test, including parallelism detection and perpendicularity detection, wherein the parallelism detection is to place the tested part on a flat plate, move the dial indicator, and then move the dial indicator. Measure the surface to be measured according to the specified measurement. The difference between the maximum and minimum readings of the dial indicator is the parallelism error. The perpendicularity detection is to place the wide side of the 90° angle ruler against the reference side, and measure the measured plane and the 90° angle ruler. For the gap between the narrow sides, the method is the same as the measurement of the straightness error, and the maximum gap is the verticality error.

As a preference of the present invention, the straightness detection adopts a knife-edge straightedge to detect, and the knife-edge straightedge is in contact with the measured plane along a given direction, and the maximum gap between the two is minimized, and the measured maximum gap is For this reason, the straightness error of the plane in the direction of the element line, when the gap is small, can be estimated according to the optical gap; when the gap is large, it can be measured with a feeler gauge.

As a preferred embodiment of the present invention, the flatness detection is carried out with a knife-edge straightedge. The knife-edge straightedge is contacted with the measured plane, and the reading value of the largest gap is detected in all aspects, which is the flatness error.

Example 3

An integral combined machining process of parts, comprising the following steps:

Step 1. Arrange multiple single pieces on one piece of material side by side, increase the height to 2MM, and conduct preliminary processing by fast-moving wire cutting;

Step 2. After the right-angle machining of the shape of G, the post-process is entered, the head is shaped to be inserted, the surface is formed by electric discharge, and the CNC on the main body of the part is processed and formed according to PH;

Step 3: EOB perforation is performed on the parts processed in Step 2;

Step 4. The parts processed in step 3 are processed by CNC on the head of the parts;

Step 5. After the head is processed, the holes and each step are processed by MC processing;

Step 6. After the processing of the head, holes and steps is completed, the grinding and slicing processing is carried out. During this process, the height direction is accurately grasped to ensure the height consistency, and then the total height processing is carried out;

Step 7. The parts processed in step 6 are processed by CNC on the tail of the parts;

Step 8. The parts processed in Step 7 are processed by EDM; the corners of the parts are processed;

Step 9. After each process is processed at one time, reduce the number of clamping times, and ensure consistency according to PH. Then, the overall quality of the parts processed through the above steps will be inspected. If there is no problem in the quality inspection, it will be delivered from the factory.

As a preference of the present invention, the speed of the fast-moving wire in step 1 is 10 m/s, and it is a reciprocating linear motion.

As a preference of the present invention, the EOB perforation in the third step is performed with a micro electric drill, and the drill bit rotation speed of the electric drill is maintained at 300r/s.

As a preference of the present invention, the temperature between the two electrodes in the EDM process in step eight is 2500°C to 3500°C.

As a preference of the present invention, the processing depth of the step processing in step 6 is 0.155 mm.

As a preferred aspect of the present invention, the quality inspection in step 9 includes dimensional accuracy inspection, shape accuracy inspection, straightness inspection, flatness inspection, and position accuracy inspection.

As a preference of the present invention, the dimensional accuracy test is usually carried out with a vernier caliper, a centimeter, etc. If the measured size is between the maximum limit size and the minimum limit size, the part is qualified; if the measured size is larger than the maximum physical size, the part is unqualified. Further processing is required. If the measured size is smaller than the minimum physical size, the part will be scrapped.

As a preference of the present invention, the positional accuracy detection adopts vernier calipers, dial indicators, and right angles to test, including parallelism detection and perpendicularity detection, wherein the parallelism detection is to place the tested part on a flat plate, move the dial indicator, and then move the dial indicator. Measure the surface to be measured according to the specified measurement. The difference between the maximum and minimum readings of the dial indicator is the parallelism error. The perpendicularity detection is to place the wide side of the 90° angle ruler against the reference side, and measure the measured plane and the 90° angle ruler. For the gap between the narrow sides, the method is the same as the measurement of the straightness error, and the maximum gap is the verticality error.

As a preference of the present invention, the straightness detection adopts a knife-edge straightedge to detect, and the knife-edge straightedge is in contact with the measured plane along a given direction, and the maximum gap between the two is minimized, and the measured maximum gap is For this reason, the straightness error of the plane in the direction of the element line, when the gap is small, can be estimated according to the optical gap; when the gap is large, it can be measured with a feeler gauge.

As a preferred embodiment of the present invention, the flatness detection is carried out with a knife-edge straightedge. The knife-edge straightedge is contacted with the measured plane, and the reading value of the largest gap is detected in all aspects, which is the flatness error.

The data obtained by 3 groups of embodiments are compared with the data obtained by traditional processing methods, and the contrast data obtained are as follows:

From the comparison of the above experimental data, it can be concluded that the total processing time of the integral combined processing technology of the parts provided by the present invention is significantly reduced compared with the traditional technology, which effectively improves the production efficiency of mold finishing and reduces the production cost of the product.

The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions are only preferred examples of the present invention, and are not intended to limit the present invention, without departing from the spirit and scope of the present invention. Under the premise, the present invention will also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

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.