CN202824878U - Numerical control rotor grinding machine with high precision - Google Patents
Numerical control rotor grinding machine with high precision Download PDFInfo
- Publication number
- CN202824878U CN202824878U CN 201220001796 CN201220001796U CN202824878U CN 202824878 U CN202824878 U CN 202824878U CN 201220001796 CN201220001796 CN 201220001796 CN 201220001796 U CN201220001796 U CN 201220001796U CN 202824878 U CN202824878 U CN 202824878U
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Abstract
The utility model discloses a numerical control rotor grinding machine with high precision, mainly comprising a machine body, a work bench, a head rack, a tail rack, a grinding wheel rack, a precise grinding tool, and a grinding wheel mechanism. The machine tool adopts the method of numerical control shaping and grinding, and a mathematical model which is conjugated with a molding surface and is used for trimming a roller movement track is established. Through a numerical control apparatus, movement of two shafts of a grinding wheel trimmer is controlled, and the arc center of a diamond roller generates a linkage between the directions of two coordinates. The grinding wheel is trimmed to be the molding surface required. During the processing, the grinding wheel fully contacts with a workpiece profile. By means of a vertical movement and precision indexing movement of the work bench and a transverse feeding movement of the grinding wheel, the numerical control molding and grinding can be realized, and the rotor shape required can be grinded. The numerical control rotor grinding machine with high precision is advantageous in that the grinding tooth-shaped precision reaches to 0.01mm, and tooth-surface roughness can reach to Ra0.2-0.32; production efficiency is raised by at least twice compared with a conventional milling process, and production cost is greatly reduced compared with the milling process.
Description
Technical field
The utility model relates to the Metal Cutting Machine Tool field, what be specifically related to is a kind of equipment of processed complex helicoid rotor---high precision numerical control rotor grinding machine.
Background technology
The profiled screw rotor is widely used in the plant equipment of the industries such as mine, chemical industry, power, metallurgy, building, machinery, refrigeration, light industry, these part tooth surface shapes are different, required precision is high, difficulty of processing is also larger, wherein, the highest, the most representative with helical-lobe compressor, refrigerator, the required precision of industrial pump screw rotor.
Take helical-lobe compressor as example: the most important part of helical-lobe compressor is exactly a pair of intermeshing helical form yin, yang rotor, its physical dimension and contrate tooth profile are the most important decisive factors of compressor performance and efficient, back lash between rotor, the interior interporal lacuna of rotor tooth top and casing all relies on the rotor component machining accuracy to guarantee.
The flank of tooth of rotor is complicated three-dimension curved surface, at present the processes such as production miller milling, hobboing cutter cutting, milling with whirling cutter that adopt more.Because the screw rotor number of teeth is few, lead angle is large, adopts the Milling Process calculation of complex, and that the cutter manufacturing requires is high, cost is high, and machining accuracy is low.And the processing method of accurate grinding after the milling has reduced the requirement of roughing to equipment and cutter, can effectively improve the machining accuracy of screw rotor, subtracts trochantinian back lash, can reduce the leakage of gas in the compression process simultaneously.
Replacing finish-milling with correct grinding is the development trend of screw rotor manufacturing technology, can significantly improve profile accuracy and the surface quality of screw rotor.
Summary of the invention
This programme discloses the novel processing method of a kind of complicated rotor and equipment, can effectively solve compressor drum machining accuracy and efficiency.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of high precision numerical control rotor grinding machine comprises lathe bed, it is characterized in that: on the described lathe bed workbench is set, the headstock and tailstock are set on the workbench, the lathe bed rear portion arranges grinding carriage, and emery wheel and accurate grinding tool are set on the grinding carriage, and the top of emery wheel arranges dresser.
Described workbench arranges the linear transmission of lengthwise movement.
Described grinding carriage arranges the linear transmission of transverse movement.
Rotatablely moving of described emery wheel is the main motion of lathe, and the rotation of emery wheel is realized the principal cutting movement of emery wheel by the rotation of the accurate grinding tool on the main driven by motor grinding carriage, the distribution of other cutting movement and being defined as: X-axis: grinding carriage feed motion; Z axis: table longitudinal movement; C axle: headstock spindle gyration; The V axle: the trimmer slide moves both vertically; W axle: trimmer planker horizontal movement; SP2 axle: freeing wheel main shaft gyration motion; A axle: the gyration in the grinding carriage vertical plane; SP1 axle: grinding wheel spindle servo turning motion.
This programme compared with prior art has remarkable advantage and beneficial effect, the rotor that grinding process is produced, its profile accuracy has reached 0.01mm, tooth-face roughness can reach Ra0.2～0.32, profile accuracy and surface quality all are greatly improved, the more traditional milling process of production efficiency improves at least twice, and processing cost declines to a great extent than Milling Process.
This programme is based on formed grinding wheel carries out grinding to workpiece mechanism, adopt the method for numerical control formation grinding, the Mathematical Modeling of the contact roller for dressing movement locus of foundation and molded surface conjugation, and pass through numerical control device, the two axle movement of control dresser, the interlock that makes the center of arc of emery wheel produce two coordinate directions is accomplished required molded surface to emery wheel.Add emery wheel and workpiece profile comprehensive engagement in man-hour, utilize the in-movement of table longitudinal movement, precision indexing motion and the emery wheel of apparatus of the present invention, realize the numerical control formation grinding, thereby grinding goes out required rotor shapes.It is characterized in that using forming grinding wheel special-shaped helicoid part to be carried out process and the lathe thereof of grinding.
Description of drawings
Fig. 1 is the utility model processing parts view.
Fig. 2 is the utility model main movement form schematic three dimensional views.
Fig. 3 is the utility model Facad structure schematic diagram.
Fig. 4 is the utility model plan structure schematic diagram.
Fig. 5 is the utility model side-looking structural representation.
Wherein: the 1-lathe bed; The 2-headstock; The 3-cooling system; The 4-electrical system; The 5-grinding carriage; The 6-wheel dresser; The 7-grinding wheel spindle; The 8-cooling pipe; The 9-protector; The 10-workbench; The 11-tailstock.
The specific embodiment
Below in conjunction with the drawings and specific embodiments this programme is described further:
The described high precision numerical control rotor grinding machine of this programme mainly is comprised of parts such as lathe bed 1, workbench 10, the headstock 2, tailstock 11, grinding carriage 5, accurate grinding tool, wheel dressers 6.Described lathe bed 1 is the basic part of lathe, in order to supporting other critical pieces of lathe, and the linear transmission of workbench 10 longitudinal phases motion is installed.The described headstock 2, tailstock 11 are installed on the workbench 10, pass through the special fixture supporting workpiece between the headstock 2, the tailstock 11, and rotate the drive workpiece rotatings through the headstock 2, finish the gyration that rotor grinding machining needs.Described grinding carriage 5 is positioned at bed piece 1 rear portion, and emery wheel and accurate grinding tool are installed on the grinding carriage 5, and realizes the infeed motion of rotor grinding by grinding carriage 5 horizontal linear transmissions.Described emery wheel is driven the high speed rotary motion that realizes emery wheel by accurate grinding tool, finish the machining to workpiece.Described dresser 6 is installed in grinding carriage top, and any finishing that complicated rotor cutter cuts type is finished by NC dresser 6 in the top of abrasive grinding wheel.
The headstock 2 described in the above-mentioned rotor grinding machine refers to be installed on the headstock part in described lathe left side, it is by driven by servomotor, be used for realizing the precision rotating setting movement of rotor machining process, and link with the motion of workbench 10 longitudinal registers, the screw thread of finishing the rotor machining process generates motion.
Linear transmission described in the above-mentioned rotor grinding machine comprises the linear transmission of workbench longitudinal phase motion, the horizontal linear transmission of grinding carriage, trimmer cross table both direction linear transmission.It by servomotor through reducing gear or directly drive the precision positioning work that ball-screw is finished executive component.
X-axis: grinding carriage feed motion;
Z axis: table longitudinal movement;
C axle: headstock spindle gyration;
The V axle: the trimmer slide moves both vertically;
W axle: trimmer planker horizontal movement;
SP2 axle: freeing wheel main shaft gyration motion;
A axle: the gyration in the grinding carriage vertical plane;
SP1 axle: grinding wheel spindle servo turning motion;
Described numerical control rotor grinder bed is the monoblock type lathe bed, and such as Fig. 3, Fig. 4, shown in Figure 5: lathe bed 1 is used for supporting the parts such as backing plate, grinding carriage 5, workbench 10 and the headstock 2, tailstock 11, wheel dresser 6.Lathe is realized the multi-shaft interlocked motion that rotor machining requires by digital control system control, and it is moving that the present embodiment is that the SIEMENS system controls eight axle tetrads.
In the course of work, at first start the crushing program, described NC dresser is under digital control system control, horizontal supporting plate and vertical sliding drive the rectilinear motion that produces V, W diaxon by servomotor through linear transmission, it repairs golden steel disk or golden pen is the castellated shape that requires with described crushing just.Unclamp the locking device of described grinding carriage 5, described A axle is under the driving of servomotor, and grinding carriage is pressed the required angle of rotor helical-screw lift angle rotation, again locks grinding carriage.
To slightly open the spiral fluted rotor is clamped in end to end between the frame, start the grinding carriage motor, to be trimmed to abrasive wheel and introduce the helicla flute middle part, starter motor bed head frame motor, headstock motor is paid or the rotation of gear drive drive workpiece through worm and gear, forms with described Z axis table longitudinal movement interlock and decides to move than screw thread, starts cooling system 4 and cooling pipe 8, lathe begins the grinding program that circulates, and workpiece can be ground to required rotor component.
This programme numerical control rotor grinding machine is characterized in that utilizing forming grinding wheel grinding complex profile rotor component, and therefore, which kind of digital control system no matter lathe adopt, and its course of work action does not change, so its variation belongs to protection domain of the present invention.
Be not limited to worm gear in the described headstock transmission mechanism of this programme---the endless screw apparatus transmission, also can use gear drive, or the revolution of motor direct-drive headstock spindle; the revolution of drive workpiece; its operation principle is consistent, and therefore, its variation also belongs to protection domain of the present invention.
The described accurate grinding tool of this programme refers to grinding wheel spindle, and no matter described grinding wheel spindle parts bearing adopts hydrostatic bearing, rolling bearing or the bearing of other type, and its operation principle is consistent, so its variation also belongs to protection domain of the present invention.
The described Z axis motion of this programme refers to table longitudinal movement, maintains static the mode that grinding carriage is done the motion of vertical and horizontal both direction as adopting workbench, and its operation principle also is consistent, so its variation also belongs to protection domain of the present invention.
Obviously, more than be the specific descriptions to this programme, any change of making under the inventive concept of this programme all will fall in the protection domain of the present utility model.
Claims (4)
1. a high precision numerical control rotor grinding machine comprises lathe bed, it is characterized in that: on the described lathe bed workbench is set, the headstock and tailstock are set on the workbench, the lathe bed rear portion arranges grinding carriage, and emery wheel and accurate grinding tool are set on the grinding carriage, and the top of emery wheel arranges dresser.
2. high precision numerical control rotor grinding machine according to claim 1 is characterized in that, described workbench arranges the linear transmission of lengthwise movement.
3. high precision numerical control rotor grinding machine according to claim 1 is characterized in that, described grinding carriage arranges the linear transmission of transverse movement.
4. high precision numerical control rotor grinding machine according to claim 1, it is characterized in that, rotatablely moving of described emery wheel is the main motion of lathe, the rotation of emery wheel is realized the principal cutting movement of emery wheel by the rotation of the accurate grinding tool on the main driven by motor grinding carriage, the distribution of other cutting movement and being defined as: X-axis: grinding carriage feed motion; Z axis: table longitudinal movement; C axle: headstock spindle gyration; The V axle: the trimmer slide moves both vertically; W axle: trimmer planker horizontal movement; SP2 axle: freeing wheel main shaft gyration motion; A axle: the gyration in the grinding carriage vertical plane; SP1 axle: grinding wheel spindle servo turning motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220001796 CN202824878U (en) | 2012-01-05 | 2012-01-05 | Numerical control rotor grinding machine with high precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220001796 CN202824878U (en) | 2012-01-05 | 2012-01-05 | Numerical control rotor grinding machine with high precision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202824878U true CN202824878U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220001796 Expired - Lifetime CN202824878U (en) | 2012-01-05 | 2012-01-05 | Numerical control rotor grinding machine with high precision |
Country Status (1)
| Country | Link |
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| CN (1) | CN202824878U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528172A (en) * | 2012-01-05 | 2012-07-04 | 陕西汉江机床有限公司 | High-precision numerically-controlled rotor grinding machine |
| CN107971583A (en) * | 2017-12-22 | 2018-05-01 | 广州中国科学院沈阳自动化研究所分所 | A kind of RV retarders cycloidal-pin wheel frock and processing method |
| CN109014441A (en) * | 2018-08-03 | 2018-12-18 | 安徽六方重联机械股份有限公司 | A kind of high-precision binodal Gear Processing mechanism |
| CN110253434A (en) * | 2019-07-09 | 2019-09-20 | 中国航发哈尔滨东安发动机有限公司 | A kind of grinding processing method of internal rotor part type face precision |
| CN112658838A (en) * | 2020-12-25 | 2021-04-16 | 扬州大学 | Engine crankshaft numerically controlled grinder |
| CN114850584A (en) * | 2022-06-21 | 2022-08-05 | 湖南中大创远数控装备有限公司 | Worm wheel gear grinding machine |
-
2012
- 2012-01-05 CN CN 201220001796 patent/CN202824878U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528172A (en) * | 2012-01-05 | 2012-07-04 | 陕西汉江机床有限公司 | High-precision numerically-controlled rotor grinding machine |
| CN107971583A (en) * | 2017-12-22 | 2018-05-01 | 广州中国科学院沈阳自动化研究所分所 | A kind of RV retarders cycloidal-pin wheel frock and processing method |
| CN109014441A (en) * | 2018-08-03 | 2018-12-18 | 安徽六方重联机械股份有限公司 | A kind of high-precision binodal Gear Processing mechanism |
| CN110253434A (en) * | 2019-07-09 | 2019-09-20 | 中国航发哈尔滨东安发动机有限公司 | A kind of grinding processing method of internal rotor part type face precision |
| CN112658838A (en) * | 2020-12-25 | 2021-04-16 | 扬州大学 | Engine crankshaft numerically controlled grinder |
| CN114850584A (en) * | 2022-06-21 | 2022-08-05 | 湖南中大创远数控装备有限公司 | Worm wheel gear grinding machine |
| CN114850584B (en) * | 2022-06-21 | 2024-03-12 | 湖南中大创远数控装备有限公司 | Worm grinding wheel gear grinding machine |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |
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| CX01 | Expiry of patent term |