CN117773512A - Compensating method for narrow U-shaped groove machining cutter - Google Patents
Compensating method for narrow U-shaped groove machining cutter Download PDFInfo
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- CN117773512A CN117773512A CN202311717995.9A CN202311717995A CN117773512A CN 117773512 A CN117773512 A CN 117773512A CN 202311717995 A CN202311717995 A CN 202311717995A CN 117773512 A CN117773512 A CN 117773512A
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- 238000003754 machining Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000010791 quenching Methods 0.000 claims description 19
- 230000000171 quenching effect Effects 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 238000005056 compaction Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 abstract description 7
- 238000010892 electric spark Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The invention discloses a method for compensating a machining cutter of a narrow U-shaped groove, which relates to the field of machining, and aims to solve the problem that when the width of the narrow U-shaped groove is smaller than 1.05 times of the diameter of the cutter or the depth of the narrow U-shaped groove exceeds 5 times of the diameter of the cutter, the first cutter of each layer of cutter which cuts into the narrow U-shaped groove for the first time is in full-edge cutting, the machining cutter is compensated to the right side by adopting a machining cutter compensation method, the phenomenon of over-cutting of the narrow groove by the cutter can be effectively solved by adjusting the compensation amount, the working efficiency is improved by 30 percent relative to electric spark equipment, the machining range is increased by 150 percent by numerical control, the machining precision can reach +/-0.02 mm, the surface quality can reach Ra0.8, the problem that the cutter of the narrow U-shaped groove cannot be machined by a numerical control machine tool is solved, the machining efficiency of the narrow U-shaped groove is improved, and the machining quality of the narrow U-shaped groove is ensured.
Description
Technical Field
The invention relates to the field of machining, in particular to a compensation method for a narrow U-shaped groove machining cutter.
Background
The die is used for producing various die-casting and metal casting dies, the die is complex in shape, wherein the processing difficulty of a rib groove in molding is high, particularly the processing difficulty of a narrow U-shaped groove is high, the narrow U-shaped groove is processed in the process of rough machining, quenching procedures, reference machining, finish machining and the like, and the hardness of the die can reach HRC46-48 after the quenching procedures due to the narrow space of the narrow U-shaped groove. The shaping is in solid state during narrow U type groove finish machining, and narrow U type groove processing degree of difficulty is great in the shaping, and in the numerical control center course of working, because narrow U type groove space is narrow and small, can't use the great cutter of diameter to process, the lower diameter cutter intensity is worse, the atress warp in the course of working, often appears the sword phenomenon of bending over, leads to the mould to scrap, seriously restricts the mould quality.
The U-shaped groove has a small numerical control machining range, and can only machine narrow grooves with the groove width being more than 1.2 times of the diameter of the cutter and the groove depth being less than twice of the diameter of the cutter. In the process of machining the U-shaped groove by the numerical control milling cutter, when the cutter is used for cutting, the cutter can be subjected to reaction force, so that the cutter is slightly deformed, and moreover, quality accidents caused by machining errors can often occur, so that the quality of the die is seriously influenced. The groove width is smaller than 8mm and is 1.05-1.2 times of the diameter of the cutter, the groove depth is smaller than 5 times of the diameter of the cutter, the existing machining mode is to use electric spark equipment for machining, the metal is gasified at high temperature instantly through electrode discharge machining, the purpose of metal removal is achieved, machining of the narrow U-shaped groove is achieved, the method is low in efficiency, corresponding electrodes and the like are required to be manufactured correspondingly during machining, manufacturing cost is high, and a white carbon layer left by electric discharge in the electric discharge process can affect the service life of a die.
Disclosure of Invention
Aiming at the problems in the prior art, the invention designs a compensation method for the narrow U-shaped groove processing cutter, which effectively compensates the position of the cutter in the process of processing the narrow U-shaped groove, reduces the stress deformation of the cutter, avoids the cutter spraining and ensures the processing quality.
The technical scheme adopted for realizing the invention is as follows: a compensation method for a narrow U-shaped groove machining cutter is characterized by comprising the following steps:
1) After rough machining of a die blank, the machining allowance of a narrow U-shaped groove of the die blank is 0.5-3 mm, the die blank is analyzed, and the narrow U-shaped groove is filled;
2) Vacuum quenching is adopted for the die blank after the compaction treatment in the step 1), and the hardness of the material reaches HRC46-48;
3) Performing reference processing and deformation detection on the die blank subjected to vacuum quenching in the step 2) through a machining procedure;
4) Positioning by using the machining standard of the step 3), and carrying out numerical control semi-finishing working procedure, wherein in the narrow U-shaped groove of the die blank after vacuum quenching, in the direction of a cutter path, a first cutter cut into the narrow groove for the first time is compensated to the right side, the compensation amount is 0.03-0.5 mm, and the machining allowance of the narrow U-shaped groove of the die blank after vacuum quenching is 0.05mm;
5) And (3) finishing the narrow U-shaped groove of the die blank subjected to the vacuum quenching after the numerical control semi-finishing in the step (4), and shaping a finished die.
Further, the depth of the narrow U-shaped groove is more than 5 xD or 1.05 xD is less than or equal to 1.2 xD, and D is the diameter of the cutter.
Further, in step 1), the machining allowance of the narrow U-shaped groove of the die blank is 1mm.
Further, in step 2), the hardness of the die blank after the filling treatment reaches HRC47 after the vacuum quenching.
The compensation method of the narrow U-shaped groove machining cutter has the beneficial effects that:
a method for compensating the cutter for machining narrow U-shaped slot features that when the width of narrow U-shaped slot is less than 1.05 times of the diameter of cutter or the depth of narrow U-shaped slot is more than 5 times of the depth of cutter, the first cutter of each layer of cutter is in full-edge cutting, the cutter is compensated to right side, the cutter is used to machine narrow slot, the machining efficiency is increased by 30% relative to electric spark equipment, the machining range is increased by 150% by digital control, the machining precision can reach + -0.02 mm, the surface quality can reach Ra0.8, the problem that the cutter of narrow U-shaped slot cannot be machined by digital control machine is solved, the machining efficiency of narrow U-shaped slot is improved, and the machining quality of narrow U-shaped slot is also ensured.
Drawings
FIG. 1 is a three-dimensional schematic of a part being machined in an embodiment;
FIG. 2 is a schematic view of the tool compensation amount in the embodiment;
FIG. 3 is a schematic view of the force applied during machining of the M-amp tool of FIG. 2;
FIG. 4 is a schematic finish view of a part being machined in an embodiment;
in the figure: 1. the method comprises the steps of machining a part to be machined, 2, a narrow U-shaped groove, 3, a cutter, A, a compensated cutter machining path, B, a cutter theoretical machining path, F, a first cutting-in cutter needs to be added with a compensation path, E, a second cutting-in cutter does not need to be added with a cutter compensation path, F1, a cutter feeding direction acting force direction, a F2. cutter rotating direction acting force direction, a F3. cutter machining reaction force direction and F4. cutter rotating direction.
Detailed Description
The present invention will be described in further detail below with reference to fig. 1 to 4 and the detailed description, and for the purpose of making the objects, technical solutions and advantages of the embodiments more clear, the technical solutions in the examples will be clearly and completely described with reference to the drawings in the examples, and the detailed description is only for explaining the present invention and not limiting the scope of the present invention.
A compensation method of a narrow U-shaped groove machining cutter comprises the following steps:
1) After rough machining of a die blank, the machining allowance of a narrow U-shaped groove of the die blank is 0.5-3 mm, the die blank is analyzed, and the narrow U-shaped groove is filled;
2) Vacuum quenching is adopted for the die blank after the compaction treatment in the step 1), and the hardness of the material reaches HRC46-48;
3) Performing reference processing and deformation detection on the die blank subjected to vacuum quenching in the step 2) through a machining procedure;
4) Positioning by using the machining standard of the step 3), and carrying out numerical control semi-finishing working procedure, wherein in the narrow U-shaped groove of the die blank after vacuum quenching, in the direction of a cutter path, a first cutter cut into the narrow groove for the first time is compensated to the right side, the compensation amount is 0.03-0.5 mm, and the machining allowance of the narrow U-shaped groove of the die blank after vacuum quenching is 0.05mm;
5) And (3) finishing the narrow U-shaped groove of the die blank subjected to the vacuum quenching after the numerical control semi-finishing in the step (4), and shaping a finished die.
Examples:
as shown in figure 1, a machined part 1 is a die blank part, a narrow U-shaped groove 2 is formed in the machined part 1, the depth of the narrow U-shaped groove is more than 5 xD or less than 1.05 xD, the width of the narrow U-shaped groove is less than or equal to 1.2 xD, D is the diameter of a cutter 3, 4 parts of an alloy cutter with a round angle R1 extend out of the cutter 3 by 25mm, 30mm, 35mm and 40mm respectively, after rough machining of the machined part 1, the machining allowance of the narrow U-shaped groove is 0.5-3 mm, the machined part 1 is analyzed, the narrow U-shaped groove is filled, and the narrow U-shaped groove material is quenched DIEVAR and has hardness HRC46-48; performing reference machining and deformation detection on the machined part 1 through a machining process; the machining allowance of the narrow U-shaped groove 2 of the machined part 1 is ensured to be 0.05mm through a numerical control semi-finishing process; the method comprises the steps of carrying out numerical control finish machining on a narrow U-shaped groove 2 of a machined part 1, manufacturing a cutter path, wherein the center of the cutter is the center of a workpiece, as shown in fig. 2, B is a theoretical cutter path machining position, A is a compensated cutter path machining position, the cutting depth is 0.1mm, the rotating speed S5000 and the feeding speed F1000 are 10mm, as shown in fig. 3, F1 is the acting force direction in the cutter feeding direction, F2 is the acting force direction in the cutter rotating direction, F3 is the reaction force direction received in the cutter machining, F4 is the cutter rotating direction, F is the first cutting into the cutter path, compensation is needed, E is the second cutter path, the cutter compensation is not needed, the DIEVAR material is used as an example cutter machining compensation reference table 1, in the cutter path direction, the first cutter of each layer cutting into the narrow groove for the right side is compensated by 0.03-0.5 mm, and the finish machining die is molded.
TABLE 1
The foregoing is merely a preferred embodiment of the invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the invention, which is intended to be comprehended within the scope of the invention.
Claims (4)
1. A compensation method for a narrow U-shaped groove machining cutter is characterized by comprising the following steps:
1) After rough machining of a die blank, the machining allowance of a narrow U-shaped groove of the die blank is 0.5-3 mm, the die blank is analyzed, and the narrow U-shaped groove is filled;
2) Vacuum quenching is adopted for the die blank after the compaction treatment in the step 1), and the hardness of the material reaches HRC46-48;
3) Performing reference processing and deformation detection on the die blank subjected to vacuum quenching in the step 2) through a machining procedure;
4) Positioning by using the machining standard of the step 3), and carrying out numerical control semi-finishing working procedure, wherein in the narrow U-shaped groove of the die blank after vacuum quenching, in the direction of a cutter path, a first cutter cut into the narrow groove for the first time is compensated to the right side, the compensation amount is 0.03-0.5 mm, and the machining allowance of the narrow U-shaped groove of the die blank after vacuum quenching is 0.05mm;
5) And (3) finishing the narrow U-shaped groove of the die blank subjected to the vacuum quenching after the numerical control semi-finishing in the step (4), and shaping a finished die.
2. The method for compensating a narrow U-shaped groove machining tool according to claim 1, wherein the depth of the narrow U-shaped groove is greater than 5 xd or 1.05 xd is less than or equal to 1.2 xd, and D is the diameter of the tool.
3. The method of claim 1, wherein in step 1), the narrow U-shaped groove machining allowance of the die blank is 1mm.
4. The method of claim 1, wherein in step 2), the hardness of the die blank after the compacting treatment is HRC47 after vacuum quenching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311717995.9A CN117773512A (en) | 2023-12-14 | 2023-12-14 | Compensating method for narrow U-shaped groove machining cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311717995.9A CN117773512A (en) | 2023-12-14 | 2023-12-14 | Compensating method for narrow U-shaped groove machining cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117773512A true CN117773512A (en) | 2024-03-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311717995.9A Pending CN117773512A (en) | 2023-12-14 | 2023-12-14 | Compensating method for narrow U-shaped groove machining cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117773512A (en) |
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2023
- 2023-12-14 CN CN202311717995.9A patent/CN117773512A/en active Pending
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