CN111185723A - Machining process capable of improving concentricity of inner circle and outer circle of rotor machining - Google Patents
Machining process capable of improving concentricity of inner circle and outer circle of rotor machining Download PDFInfo
- Publication number
- CN111185723A CN111185723A CN201911381000.XA CN201911381000A CN111185723A CN 111185723 A CN111185723 A CN 111185723A CN 201911381000 A CN201911381000 A CN 201911381000A CN 111185723 A CN111185723 A CN 111185723A
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- rotor
- inner hole
- boring
- outer circle
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Drilling And Boring (AREA)
- Turning (AREA)
Abstract
The invention discloses a processing technology capable of improving concentricity of inner and outer circles in rotor processing, which comprises the steps of grinding the outer circle of a rotor by using a cylindrical grinding machine, wherein the grinding quantity diameter is less than or equal to 0.36mm, the roughness of the outer circle of the ground rotor can reach 0.8, the production efficiency is high by using a through type cylindrical grinding machine, the straightness of a product is good, the ground rotor is placed into a four-station boring machine, two stations run, an inner hole is bored by positioning the outer circle, the processing quantity is less than or equal to 0.3mm, the cylindricity of the inner hole is less than 0.005mm, the concentricity of the inner and outer circles is less than 0.03mm, and Cpk is more than 1.33. The processing technology of the invention greatly improves the concentricity of the inner hole and the outer circle of the rotor.
Description
Technical Field
The invention relates to a finish machining process, in particular to a machining process capable of improving concentricity of an inner circle and an outer circle of a rotor.
Background
For the design of a rotor with a processing amount, the processing technology commonly used in the prior industry is to process the inner hole of the rotor firstly and then position and process the outer circle of the rotor in the inner hole, the processing technology can ensure the concentricity of the inner hole and the outer circle for the rotor with the counter bore depth being less than one third of the thickness of the rotor stack, but the processing technology is difficult to ensure the concentricity of the inner hole and the outer circle for the rotor with the counter bore depth being more than one third of the thickness of the rotor stack. The existing industry is excited by competition, the cost is continuously reduced, the performance requirement is higher and higher, the depth of a plurality of rotor design counter bores reaches two thirds of the thickness of a rotor stack, the concentricity of the inner hole and the outer circle can not be ensured by the processing technology of the existing universal inner hole positioning processing outer circle of the rotor, the product rejection rate is high, and the enterprise loss is serious.
Disclosure of Invention
In order to solve the technical problem, the invention provides a processing technology capable of improving the concentricity of an inner circle and an outer circle of a rotor. The processing technology subverts the traditional processing method, firstly, the excircle of the rotor is processed, and then the inner hole of the rotor is processed by taking the excircle as the positioning, so that the concentricity of the inner hole and the excircle of the rotor is greatly improved.
The above object of the present invention is achieved by the following technical means:
a processing technology capable of improving concentricity of inner circle and outer circle of rotor processing comprises the following steps: grinding the outer circle of the rotor and boring the inner hole of the rotor.
Further, the grinding of the outer circle of the rotor is as follows: a centerless grinding machine with three numerical control shafts is adopted, automatic compensation is carried out by trimming a guide wheel and a grinding wheel, the feeding precision is set to be 0.001mm, the equipment beat is less than 5 seconds, the cylindricity is less than 0.004, the feeding mode is manual, and the feeding mode is automatic robot feeding.
Further, the diameter of the excircle grinding amount of the rotor is less than 0.36 mm.
Further, the rotor inner hole bore hole is: the machine tool of the special machine for polishing the roller of the inner hole of the rotor adopts a mode that parts rotate and a boring cutter does not rotate, fixed power heads are arranged on the left side and the right side of the machine tool, a movable boring cutter head is arranged in the middle of the machine tool, and a quasi-dry type trace oil feeding cutting mode is adopted; when a machine tool is processed, the left fixed power head clamps the rotor and rotates at a high speed, the movable boring cutter head feeds for cutting, and the right power head finishes feeding and discharging; the left and right alternate processing is carried out, the feeding and discharging time and the cutting time are overlapped, and the left and right main shafts have the frequency conversion speed regulation function; the processing standard of the rotor inner hole boring is as follows: the single side of the boring amount is 0.1mm, the rotor after boring beats for 16 seconds/2 pieces, the cylindricity of an inner hole is less than 0.005mm, and Cpk is more than or equal to 1.33.
Further, the power head is assembled with the spindle using one of a 4# and a 5# morse taper.
Further, the machine tool adopts an integrally cast machine body and a cross rib structure, and two times of aging treatment are carried out.
Furthermore, the blade of the boring cutter head adopts a four-corner indexable blade.
Further, after the rotor is machined, the concentricity of the inner hole and the outer circle is detected to be less than 0.03mm through the penetrating rod.
Further, a robot is adopted for feeding and discharging in the process of grinding the outer circle of the rotor and boring the inner hole of the rotor, specifically; after the centerless grinding machine is finished, automatically installing 2 rotors into a clamp of a rotor boring machine by a robot at the same time, boring an inner hole, and finally placing the processed rotor on a special polishing machine for a rotor inner hole roller; the robot has 4 clamping jaws and accomplishes the work of snatching with the dabber location rises, and 2 are respectively two rotors about a set of while.
Further, the robot selects a Kuka 16KG, and the rotating radius is 110 mm.
The invention has the beneficial effects that:
the machining process provided by the invention comprises the steps of grinding the outer circle of the rotor by using the cylindrical grinding machine, wherein the grinding quantity diameter is less than or equal to 0.36mm, the roughness of the outer circle of the ground rotor can reach 0.8, the diameter of the rotor can be accurately ensured to be within 0.04, the production efficiency is high by using the through type cylindrical grinding machine, the straightness of the product is good, the ground rotor is placed into a four-station boring machine, two stations run, an inner hole is bored by using the through type cylindrical grinding machine in a positioning mode, the machining quantity is less than or equal to 0.3mm, the cylindricity of the inner hole is less than 0.005mm, the concentricity of the inner circle and the outer circle is less than 0.03.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1: a processing technology capable of improving concentricity of inner circle and outer circle of rotor processing comprises the following steps: grinding the outer circle of the rotor and boring the inner hole of the rotor.
Specifically, the grinding of the outer circle of the rotor specifically comprises the following steps: a centerless grinding machine with three numerical control shafts is adopted, automatic compensation is carried out by trimming a guide wheel and a grinding wheel, the feeding precision is set to be 0.001mm, the equipment beat is less than 5 seconds, the cylindricity is less than 0.004, the feeding mode is manual, the feeding mode is automatic blanking by a robot, and the grinding quantity diameter of the excircle of a rotor is less than 0.36 mm.
After the centerless grinding machine is completed, the rotor is automatically installed in a fixture of a rotor boring machine through a robot, and inner hole boring is carried out:
specifically, the rotor boring machine adopts a mode that parts rotate and a boring cutter does not rotate, fixed power heads are arranged on the left side and the right side of the machine tool, a movable boring cutter head is arranged in the middle, and a quasi-dry type trace oil feeding cutting mode is adopted; when a machine tool is processed, the left fixed power head clamps the rotor and rotates at a high speed, the movable boring cutter head feeds for cutting, and the right power head finishes feeding and discharging; the left and right alternate processing is carried out, the feeding and discharging time and the cutting time are overlapped, and the left and right main shafts have the frequency conversion speed regulation function; wherein, the fixed power head comprises an elastic sleeve type clamp, a rotary main shaft, a motor and other mechanisms; the movable boring cutter head comprises a numerical control sliding table, an eccentric adjustable boring cutter bar and the like.
The power head and the main shaft are assembled by adopting 4# or 5# Morse taper, so that the precision adjustment and maintenance in the future are facilitated; the machine tool adopts an integrally cast machine body and a cross rib structure, can bear enough part load after 2 times of aging treatment, reduces the deformation and the vibration generated by the cutter during cutting, and ensures enough rigidity and precision retentivity; the fixture adopts an elastic sleeve type fixture (comprising an elastic sleeve, an oil cylinder or a gas-liquid pressure cylinder and the like), and the outer circle surface of the rotor after fine grinding and the end surface of the rotor rear end ring are positioned; the clamp part is provided with a compressed air blowing device to ensure the cleanliness of the part and prevent the clamping precision and the machining precision of parts from being influenced; the blade of the boring cutter head adopts a blade with four corners capable of rotating;
and the feeding and discharging are carried out by adopting an automatic robot. Specifically; the robot has 4 clamping jaws to complete the grabbing work by positioning and tensioning the mandrel, and 2 clamping jaws form a group and simultaneously form an upper rotor and a lower rotor; the robot selects a Kuka 16KG, and the rotating radius is 110 mm.
According to the processing technology provided by the invention, after the rotor is processed, the concentricity of the inner hole and the excircle is detected to be less than 0.03mm by penetrating the rod
The processing technology provided by the invention overturns the traditional processing method, firstly the excircle of the rotor is processed, and then the inner hole of the rotor is processed by taking the excircle as a positioning position, so that the concentricity of the inner hole and the excircle of the rotor is greatly improved.
It should be noted that the specific embodiments are merely representative examples of the present invention, and it is obvious that the technical solution of the present invention is not limited to the above-mentioned examples, and many variations are possible. Those skilled in the art, having the benefit of this disclosure and the benefit of this written description, will appreciate that other embodiments can be devised which do not depart from the specific details disclosed herein.
Claims (10)
1. A processing technology capable of improving concentricity of inner circle and outer circle of rotor processing is characterized by comprising the following steps: grinding the outer circle of the rotor and boring the inner hole of the rotor.
2. The process of claim 1, wherein the cylindrical grinding of the rotor is: a centerless grinding machine with three numerical control shafts is adopted, automatic compensation is achieved by trimming of a guide wheel and a grinding wheel, the feeding precision is set to be 0.001MM, the equipment beat is less than 5 seconds, the cylindricity is less than 0.004, the feeding mode is manual, and the feeding mode is automatic robot feeding.
3. The process of claim 2 wherein the rotor cylindrical grind is less than 0.36mm in diameter.
4. The machining process according to claim 1, wherein the rotor inner bore is bored as follows: the machine tool of the special machine for polishing the roller of the inner hole of the rotor adopts a mode that parts rotate and a boring cutter does not rotate, fixed power heads are arranged on the left side and the right side of the machine tool, a movable boring cutter head is arranged in the middle of the machine tool, and a quasi-dry type trace oil feeding cutting mode is adopted; when a machine tool is processed, the left fixed power head clamps the rotor and rotates at a high speed, the movable boring cutter head feeds for cutting, and the right power head finishes feeding and discharging; the left and right alternate processing is carried out, the feeding and discharging time and the cutting time are overlapped, and the left and right main shafts have the frequency conversion speed regulation function; the processing standard of the rotor inner hole boring is as follows: the single side of the boring amount is 0.1mm, the rotor after boring beats for 16 seconds/2 pieces, the cylindricity of an inner hole is less than 0.005mm, and Cpk is more than or equal to 1.33.
5. The process of claim 4, wherein the power head is assembled with the spindle using one of a 4# and a 5# Morse taper.
6. The process of claim 4, wherein the machine tool is a one-piece casting bed body and is of a cross rib structure, and the aging treatment is carried out twice.
7. The process of claim 4, wherein the inserts of the boring head are corner indexable inserts.
8. The machining process of claim 4, wherein after the rotor is machined, the concentricity of the inner hole and the outer circle of the rod penetrating detection is less than 0.03 mm.
9. The machining process according to claim 1, wherein a robot is used for loading and unloading during the process of grinding the outer circle of the rotor and boring the inner hole of the rotor, particularly; after the centerless grinding machine is finished, automatically installing 2 rotors into a clamp of a rotor boring machine by a robot at the same time, boring an inner hole, and finally placing the processed rotor on a special polishing machine for a rotor inner hole roller; the robot has 4 clamping jaws and accomplishes the work of snatching with the dabber location rises, and 2 are respectively two rotors about a set of while.
10. The process of claim 9, wherein the robot uses a Kuka 16KG with a radius of rotation of 110 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911381000.XA CN111185723A (en) | 2019-12-27 | 2019-12-27 | Machining process capable of improving concentricity of inner circle and outer circle of rotor machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911381000.XA CN111185723A (en) | 2019-12-27 | 2019-12-27 | Machining process capable of improving concentricity of inner circle and outer circle of rotor machining |
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| Publication Number | Publication Date |
|---|---|
| CN111185723A true CN111185723A (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911381000.XA Pending CN111185723A (en) | 2019-12-27 | 2019-12-27 | Machining process capable of improving concentricity of inner circle and outer circle of rotor machining |
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| CN (1) | CN111185723A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112658301A (en) * | 2020-12-31 | 2021-04-16 | 菏泽广信船配油嘴油泵有限公司 | Accurately-adjustable boring clamp holder and inner and outer circle boring process |
-
2019
- 2019-12-27 CN CN201911381000.XA patent/CN111185723A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112658301A (en) * | 2020-12-31 | 2021-04-16 | 菏泽广信船配油嘴油泵有限公司 | Accurately-adjustable boring clamp holder and inner and outer circle boring process |
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Application publication date: 20200522 |
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| WD01 | Invention patent application deemed withdrawn after publication |