CN201320708Y - Supporting roll with box grinding device of full-automatic numerical control roll grinder - Google Patents
Supporting roll with box grinding device of full-automatic numerical control roll grinder Download PDFInfo
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- CN201320708Y CN201320708Y CNU2008202380293U CN200820238029U CN201320708Y CN 201320708 Y CN201320708 Y CN 201320708Y CN U2008202380293 U CNU2008202380293 U CN U2008202380293U CN 200820238029 U CN200820238029 U CN 200820238029U CN 201320708 Y CN201320708 Y CN 201320708Y
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Abstract
The utility model discloses a supporting roll with a box grinding device of a full-automatic numerical control roll grinder, which comprises an installation precision regulating device, an oil supplying device and an oil temperature controlling device; the installation precision regulating device comprises a bearing box which is arranged on a box seat and used for pushing a cylinder, a stopping block which is used for fixing the position of the bearing box corresponding to the box seat, a fine regulating device and a clamping plate which can drive the box seat to slide along the radial direction of a work piece lathe bed, thereby adjusting the radial position of the box seat at one end of the work piece lathe bed, causing the space axial line between the two box seats and the axial line of a grinding wheel to be in parallel and ensuring grinding precision; the oil temperature controlling device comprises a temperature sensor and an oil temperature controller, thereby ensuring that the temperature of the oil supplied by an oil supplying device is proper; the oil supplying device comprises an oil inlet pipeline, an oil tank and an oil outlet pipeline which comprises an overflow valve and a throttle valve, thus supplying the bearing box with oil which meets the requirements for temperature, oil pressure and flow, ensuring that an effective dynamic pressure is formed by an oil film bearing, effectively preventing the damage risks of bearing and ensuring grinding efficiency. In total, the grinding device ensures grinding and is convenient and reliable in use.
Description
Technical field
The utility model relates to a kind of full-automatic numerical control roll grinder, especially a kind of full-automatic digital control roll grinder backup roll belt box grinding device.
Background technology
At present, roll grinder all is that the bearing housing with backing roll unloads usually when the grinding backing roll, carries out grinding with the static pressure centre frame, again bearing housing is reinstalled the back after the completion of processing to be ground and is used.The bearing housing weight of backing roll is usually more than 20T, and disassembly process is loaded down with trivial details consuming time and be easy to damage the supporting roller bearing case, causes steel mill's rolling line Roller Machining cost to improve.During grinding, be with the bearing housing grinding then to can solve the problems referred to above to backing roll, yet roll bearing box must could effectively form filmatic bearing when feeding meets oil pressure, flow and temperature requirement oily, but, cause the rolling oil film bearing effectively not form dynamic pressure and may cause hidden danger damage of the bearing because roll rotational speed is low excessively during grinding; Secondly, be with the case grinding to do location and grinding supporting, because block error and filmatic bearing gap may produce the problem of grinding accuracy and grinding efficiency reduction with bearing housing.
The utility model content
In order to overcome above-mentioned defective, the utility model provides a kind of full-automatic digital control roll grinder backup roll belt box grinding device, and this system has guaranteed the carrying out of grinding, and is easy to use, reliable.
The utility model for the technical scheme that solves its technical problem and adopt is:
A kind of full-automatic digital control roll grinder backup roll belt box grinding device, the workpiece lathe bed is provided with the headstock, tailstock, centre frame base plate and bracing or strutting arrangement, bearing housing is provided with oil-in and oil return opening, the fuel-displaced pipeline of described oil-in and fuel tank links, the in-line of described oil return opening and fuel tank links, comprise installation accuracy adjusting device, fueller and oil-temperature control device, wherein:
Described bracing or strutting arrangement comprises two blocks, bearing housing places on the block, described block is provided with limited block and bearing housing promotes oil cylinder, limited block is installed on the block of bearing housing one side, and bearing housing promotes oil cylinder and is installed on the block of bearing housing opposite side, when specifically implementing, roll bearing box (being the bearing housing of backing roll) is placed on the block, start bearing housing and promote oil cylinder, the bearing housing on the block is pushed to limited holds out against, promptly promote to put in place; Be connected with centre frame base plate on the workpiece lathe bed by clamping plate between the block of described workpiece lathe bed one end and the workpiece lathe bed, described clamping plate can radially slide on the centre frame base plate that is positioned on the workpiece lathe bed, the block of the described workpiece lathe bed one end clamping plate that are connected, realize the radially sliding of the relative workpiece lathe bed of block of workpiece lathe bed one end with this, described centre frame base plate can drive clamping plate placed thereon and block moves axially with respect to the workpiece lathe bed, be provided with a micromatic setting again, this micromatic setting is fixedly arranged on the workpiece lathe bed of described centre frame base plate and clamping plate one side, and described micromatic setting is controlled radially sliding of the relative centre frame base plate of clamping plate; This limited block, bearing housing promote oil cylinder, micromatic setting and clamping plate and constitute the installation accuracy adjusting device;
Described fuel tank is provided with motor, motor is connected with duplex gear pump by shaft coupling, described duplex gear pump one side two inlet ports link by oil pipe and two oil headers respectively, described duplex gear pump opposite side two oil-outs link by oil pipe and two overflow valves respectively, described two overflow valves link with two choke valves are corresponding by oil pipe respectively, described two choke valves are respectively by oil pipe and corresponding the linking of two oil inlet pipes, one end, be respectively equipped with filter to filter out impurity on two oil pipes between described two choke valves and two oil inlet pipes, one end, described two overflow valves are corresponding UNICOM two oil pressure gauges respectively, the corresponding respectively UNICOM of described two choke valves two flow sensors are to check oil pressure and flow, the described two oil inlet pipe other ends are the oil-in of corresponding UNICOM two bearings case respectively, this oil header, duplex gear pump, overflow valve, choke valve, filter, the oil pipe of oil inlet pipe and mutual UNICOM thereof constitutes the fuel-displaced pipeline of described fuel tank, during concrete enforcement, motor is by shaft coupling control duplicate gear pump work, duplex gear pump is driven in the two-way oil pipe after the oil content two-way in the fuel tank is sucked from oil header simultaneously, described two road binders pass through overflow valve respectively by oil pipe, behind the throttle valve control oil pressure, filter through filter, flow in the oil-in of bearing housing via oil inlet pipe at last; Described fuel tank is provided with the oil return mouth of pipe, the described oil return mouth of pipe links with two oil return pipes, one end respectively, the two oil return pipe other ends are the oil return opening of corresponding UNICOM two bearings case respectively, this oil return mouth of pipe and oil return pipe constitute the in-line of described fuel tank, during concrete enforcement, along with the oil-in of two bearings case constantly flows into satisfactory oil, the oil after the two bearings case uses constantly flows out from the oil return opening of two bearings case and enters the oil return pipe, is back in the fuel tank through the oil return mouth of pipe of fuel tank; Described fuel-displaced pipeline, in-line and fuel tank constitute fueller;
The sidewall of described fuel tank is provided with a temperature sensor, the signal transmission oil supply temperature control machine of described temperature sensor, described oily temperature control machine is provided with flowline and inflow pipeline, described flowline and inflow pipeline link with the oily temperature controller oil-out of fuel tank and oily temperature controller oil-in respectively and form oily temperature control loop, this temperature sensor, oil temperature control machine and oily temperature control loop constitute oil-temperature control device, during concrete enforcement, temperature sensor detects the temperature of oil in the fuel tank, and send a signal to oily temperature control machine, when the temperature drift of oil in the fuel tank or when on the low side, the work of oil temperature control machine, with the oil in the fuel tank by cooling off in the inflow pipeline suction oil temperature control machine or heating, send back in the fuel tank by flowline again, so circulation is cooled off or is added deep fat after oily temperature meets the requirements, and oily temperature controller quits work.
Further technical scheme of the present utility model is:
The structure that radially slides of the relative workpiece lathe bed of described micromatic setting control clamping plate is: described micromatic setting is by bearing, eccentric shaft, pull bar, servomotor, reductor, needle bearing, hinge and Connection Block are formed, described servomotor and reductor are fixed positioned on the bearing, the bearing described centre frame base plate that is connected, the servomotor clutch end connects reductor power input, the clutch end of reductor connects eccentric shaft, be provided with needle bearing between eccentric shaft and bearing, pull bar one end is movably set on the eccentric shaft, the pull bar other end is hinged by hinge and Connection Block, the Connection Block described clamping plate that are connected, during concrete enforcement, the rotation of control eccentric shaft after servomotor slows down by decelerator, the rotation of eccentric shaft makes pull bar drive Connection Block by hinge and does feed motion, thereby the relative workpiece lathe bed of block that the clamping plate that are fixed on Connection Block are driven on it radially slides, and closes servomotor when sliding into desired location and gets final product.
The beneficial effects of the utility model are: by the position of the relative block of installation accuracy adjusting device positioning supports roller bearing case, and the radial position of the relative workpiece lathe bed of adjustment workpiece lathe bed one end block, make the space axial line that forms between two blocks parallel, guaranteed the grinding accuracy of grinding system with the axial line of emery wheel; The temperature that guarantees institute's fuel feeding in the fueller by oil-temperature control device meets the requirements, the oil that will meet temperature, oil pressure, traffic requirement by fueller is supplied with bearing housing and is formed effective dynamic pressure to guarantee filmatic bearing again, effectively avoided causing to the hidden danger of damage of the bearing and guaranteed the grinding efficiency of grinding system, generally speaking, the utility model has been guaranteed the carrying out of grinding, and is easy to use, reliable.
Description of drawings
Fig. 1 is a workpiece lathe bed schematic diagram described in the utility model;
Fig. 2 is the generalized section of installation accuracy adjusting device described in the utility model;
Fig. 3 be among Fig. 2 A-A to cutaway view;
Fig. 4 is the generalized section of fuel tank described in the utility model;
Fig. 5 is that the B-B of Fig. 4 is to cutaway view;
Fig. 6 is a fueller hydraulic schematic diagram of the present utility model.
The specific embodiment
Embodiment: a kind of full-automatic digital control roll grinder backup roll belt box grinding device, workpiece lathe bed 10 is provided with the headstock, tailstock, centre frame base plate 9 and bracing or strutting arrangement, bearing housing 2 is provided with oil-in 21 and oil return opening 22, described oil-in 21 links with the fuel-displaced pipeline of fuel tank 4, described oil return opening 22 links with the in-line of fuel tank, comprise installation accuracy adjusting device, fueller and oil-temperature control device, wherein:
Described bracing or strutting arrangement comprises two blocks 1, bearing housing 2 places on the block 1, described block 1 is provided with limited block 11 and bearing housing promotes oil cylinder 12, limited block 11 is installed on the block 1 of bearing housing 2 one sides, and bearing housing promotes oil cylinder 12 and is installed on the block 1 of bearing housing 2 opposite sides, when specifically implementing, roll bearing box (being the bearing housing 2 of backing roll 60) is placed on the block 1, start bearing housing and promote oil cylinder 12, the bearing housing on the block 12 is pushed to limited 11 holds out against, promptly promote to put in place; Be connected with centre frame base plate 9 on the workpiece lathe bed 10 by clamping plate 20 between the block 1 of described workpiece lathe bed 10 1 ends and the workpiece lathe bed 10, described clamping plate 20 can radially slide on the centre frame base plate 9 that is positioned on the workpiece lathe bed 10, the block 1 of the described workpiece lathe bed 10 1 ends clamping plate 20 that are connected, realize the radially sliding of block 1 relative workpiece lathe bed 10 of workpiece lathe bed 10 1 ends with this, described centre frame base plate 9 can drive clamping plate placed thereon 20 and block 1 moves axially with respect to workpiece lathe bed 10, be provided with a micromatic setting 3 again, this micromatic setting 3 is fixedly arranged on the workpiece lathe bed 10 of described centre frame base plate 9 and clamping plate 20 1 sides, and described micromatic setting 3 is controlled radially sliding of clamping plate 20 relative centre frame base plates 9; This limited block 11, bearing housing promote oil cylinder 12, micromatic setting 3 and clamping plate 20 and constitute the installation accuracy adjusting device;
Described fuel tank 4 is provided with motor 41, motor 41 is connected with duplex gear pump 43 by shaft coupling 42, described duplex gear pump 43 1 sides two inlet ports link by oil pipe and two oil headers 44 respectively, described duplex gear pump 43 opposite sides two oil-outs link by oil pipe and two overflow valves 45 respectively, described two overflow valves 45 are respectively by oil pipe and two choke valves, 46 corresponding linking, described two choke valves 46 are respectively by oil pipe and corresponding the linking of two oil inlet pipes, 40 1 ends, be respectively equipped with filter 48 to filter out impurity on two oil pipes between described two choke valves 46 and two oil inlet pipes, 40 1 ends, described two overflow valves 45 are corresponding UNICOM two oil pressure gauges 47 respectively, the corresponding respectively UNICOM of described two choke valves 46 two flow sensors 49 are to check oil pressure and flow, described two oil inlet pipes, 40 other ends are the oil-in 21 of corresponding UNICOM two bearings case 2 respectively, this oil header 44, duplex gear pump 43, overflow valve 45, choke valve 46, filter 48, the oil pipe of oil inlet pipe 40 and mutual UNICOM thereof constitutes the fuel-displaced pipeline of described fuel tank 4, during concrete enforcement, motor 41 is by 43 work of shaft coupling 42 control duplex gear pump, duplex gear pump 43 is driven in the two-way oil pipe after the oil content two-way in the fuel tank 4 is sucked from oil header 44 simultaneously, described two road binders pass through overflow valve 45 respectively by oil pipe, behind the choke valve 46 control oil pressure, filter through filter 48, flow in the oil-in 21 of bearing housing 2 via oil inlet pipe 40 at last; Described fuel tank 4 is provided with the oil return mouth of pipe 51, the described oil return mouth of pipe 51 links with two oil return pipes, 50 1 ends respectively, two oil return pipes, 50 other ends are the oil return opening 22 of corresponding UNICOM two bearings case 2 respectively, this oil return mouth of pipe 51 and oil return pipe 50 constitute the in-line of described fuel tank 4, during concrete enforcement, the satisfactory oil of oil-in 21 continuous inflows along with two bearings case 2, oil after two bearings case 2 uses constantly flows out from the oil return opening 22 of two bearings case 2 and enters the oil return pipe 50, is back in the fuel tank 4 through the oil return mouth of pipe 51 of fuel tank 4; Described fuel-displaced pipeline, in-line and fuel tank 4 constitute fueller;
The sidewall of described fuel tank 4 is provided with a temperature sensor 5, the signal transmission oil supply temperature control machine of described temperature sensor 5, described oily temperature control machine is provided with flowline and inflow pipeline, described flowline and inflow pipeline link with the oily temperature controller oil-out 52 of fuel tank 4 and oily temperature controller oil-in 53 respectively and form oily temperature control loop, this temperature sensor 5, oil temperature control machine and oily temperature control loop constitute oil-temperature control device, during concrete enforcement, temperature sensor 5 detects the temperature of oil in the fuel tank 4, and send a signal to oily temperature control machine, when the temperature drift of oil in the fuel tank 4 or when on the low side, the work of oil temperature control machine, with the oil in the fuel tank 4 by cooling off in the inflow pipeline suction oil temperature control machine or heating, send back in the fuel tank 4 by flowline again, so circulation is cooled off or is added deep fat after oily temperature meets the requirements, and oily temperature controller quits work.
The further technical scheme of this example is: the structure that radially slides of described micromatic setting 3 control clamping plate 20 relative workpiece lathe beds 10 is: described micromatic setting 3 is by bearing 31, eccentric shaft 32, pull bar 33, servomotor 30, reductor 34, needle bearing 35, hinge 8 and Connection Block 7 are formed, described servomotor 30 and reductor 34 are fixed positioned on the bearing 31, the bearing 31 described centre frame base plate 9 that is connected, servomotor 30 clutch ends connect reductor 34 power intakes, the clutch end of reductor 34 connects eccentric shaft 32,31 of eccentric shaft 32 and bearings are provided with needle bearing 35, pull bar 33 1 ends are movably set on the eccentric shaft 32, pull bar 33 other ends are hinged by hinge 8 and Connection Block 7, the Connection Block 7 described clamping plate 20 that are connected, during concrete enforcement, the rotation of control eccentric shaft 32 after servomotor 30 slows down by decelerator 34, the rotation of eccentric shaft 32 makes pull bar 33 drive Connection Block 7 by hinge 8 and does feed motion, thereby the block 1 relative workpiece lathe bed 10 that the clamping plate 20 that are fixed on Connection Block 7 are driven on it radially slides, and closes servomotor when sliding into desired location and gets final product.
The position of the bearing housing 2 relative blocks 1 by installation accuracy adjusting device positioning supports roller, and the radial position of adjustment workpiece lathe bed 10 1 end blocks 1 relative workpiece lathe bed 10, make the space axial line of 1 formation of two blocks parallel, guaranteed the grinding accuracy of grinding system with the axial line of emery wheel; The temperature that guarantees institute's fuel feeding in the fueller by oil-temperature control device meets the requirements, the oil that will meet temperature, oil pressure, traffic requirement by fueller is supplied with bearing housing 2 and is formed effective dynamic pressure to guarantee filmatic bearing again, effectively avoided causing to the hidden danger of damage of the bearing and guaranteed the grinding efficiency of grinding system, generally speaking, the utility model has been guaranteed the carrying out of grinding, and is easy to use, reliable.
Claims (2)
1. full-automatic digital control roll grinder backup roll belt box grinding device, workpiece lathe bed (10) is provided with the headstock, tailstock, centre frame base plate (9) and bracing or strutting arrangement, bearing housing (2) is provided with oil-in (21) and oil return opening (22), the fuel-displaced pipeline of described oil-in and fuel tank (4) links, the in-line of described oil return opening and fuel tank links, it is characterized in that: comprise installation accuracy adjusting device, fueller and oil-temperature control device, wherein:
Described bracing or strutting arrangement comprises two blocks (1), bearing housing places on the block, described block is provided with limited block (11) and bearing housing promotes oil cylinder (12), and limited block is installed on the block of bearing housing one side, and bearing housing promotes oil cylinder and is installed on the block of bearing housing opposite side; Be connected with centre frame base plate (9) on the workpiece lathe bed by clamping plate (20) between the block of described workpiece lathe bed one end and the workpiece lathe bed, described clamping plate can radially slide on the centre frame base plate that is positioned on the workpiece lathe bed, the block of the described workpiece lathe bed one end clamping plate that are connected, described centre frame base plate can drive clamping plate placed thereon and block moves axially with respect to the workpiece lathe bed, be provided with a micromatic setting (3) again, this micromatic setting is fixedly arranged on the workpiece lathe bed of described centre frame base plate and clamping plate one side, and described micromatic setting is controlled radially sliding of the relative centre frame base plate of clamping plate; This limited block, bearing housing promote oil cylinder, micromatic setting and clamping plate and constitute the installation accuracy adjusting device;
Described fuel tank is provided with motor (41), motor is connected with duplex gear pump (43) by shaft coupling (42), described duplex gear pump one side two inlet ports link by oil pipe and two oil headers (44) respectively, described duplex gear pump opposite side two oil-outs link by oil pipe and two overflow valves (45) respectively, described two overflow valves are respectively by oil pipe and corresponding the linking of two choke valves (46), end is corresponding links by oil pipe and two oil inlet pipes (40) respectively for described two choke valves, be respectively equipped with filter (48) on two oil pipes between described two choke valves and two oil inlet pipes, one end, described two overflow valves are corresponding UNICOM's two oil pressure gauges (47) respectively, described two choke valves are corresponding UNICOM's two flow sensors (49) respectively, the described two oil inlet pipe other ends are the oil-in of corresponding UNICOM two bearings case respectively, this oil header, duplex gear pump, overflow valve, choke valve, filter, the oil pipe of oil inlet pipe and mutual UNICOM thereof constitutes the fuel-displaced pipeline of described fuel tank; Described fuel tank is provided with the oil return mouth of pipe (51), and the described oil return mouth of pipe links with two oil return pipes (50) one ends respectively, and the two oil return pipe other ends are the oil return opening of corresponding UNICOM two bearings case respectively, and this oil return mouth of pipe and oil return pipe constitute the in-line of described fuel tank; Described fuel-displaced pipeline, in-line and fuel tank constitute fueller;
The sidewall of described fuel tank is provided with a temperature sensor (5), the signal transmission oil supply temperature control machine of described temperature sensor, described oily temperature control machine is provided with flowline and inflow pipeline, described flowline and inflow pipeline link with the oily temperature controller oil-out (52) of fuel tank and oily temperature controller oil-in (53) respectively and form oily temperature control loop, and this temperature sensor, oily temperature control machine and oily temperature control loop constitute oil-temperature control device.
2. full-automatic digital control roll grinder backup roll belt box grinding device according to claim 1, it is characterized in that: the structure that radially slides of the relative workpiece lathe bed of described micromatic setting control clamping plate is: described micromatic setting is by bearing (31), eccentric shaft (32), pull bar (33), servomotor (30), reductor (34), needle bearing (35), hinge (8) and Connection Block (7) are formed, described servomotor and reductor are fixed positioned on the bearing, the bearing described centre frame base plate that is connected, the servomotor clutch end connects reductor power input, the clutch end of reductor connects eccentric shaft, be provided with needle bearing between eccentric shaft and bearing, pull bar one end is movably set on the eccentric shaft, the pull bar other end is hinged by hinge and Connection Block, the Connection Block described clamping plate that are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202380293U CN201320708Y (en) | 2008-12-26 | 2008-12-26 | Supporting roll with box grinding device of full-automatic numerical control roll grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202380293U CN201320708Y (en) | 2008-12-26 | 2008-12-26 | Supporting roll with box grinding device of full-automatic numerical control roll grinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201320708Y true CN201320708Y (en) | 2009-10-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202380293U Expired - Lifetime CN201320708Y (en) | 2008-12-26 | 2008-12-26 | Supporting roll with box grinding device of full-automatic numerical control roll grinder |
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|---|---|
| CN (1) | CN201320708Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001042A (en) * | 2010-09-27 | 2011-04-06 | 清华大学 | High-speed strong-force snagging machine tool multispindle synergic mixed hydraulic control system and control method |
| CN101856795B (en) * | 2009-04-08 | 2011-09-21 | 昆山华辰机器制造有限公司 | Full-automatic digital control roll grinder backup roll belt box grinding device |
| CN102275105A (en) * | 2011-08-09 | 2011-12-14 | 安徽省尚美精密机械科技有限公司 | Taper plug-in type spindle rotating device and processing equipment |
| CN102049711B (en) * | 2009-10-27 | 2012-02-29 | 鞍钢重型机械有限责任公司 | Method for grinding large-weight mill roll by holding of static pressure bracket |
| CN110757265A (en) * | 2019-11-06 | 2020-02-07 | 新余钢铁股份有限公司 | Grinding method for bearing inner sleeve of acid rolling support roller |
| CN111215707A (en) * | 2020-02-24 | 2020-06-02 | 南京二机齿轮机床有限公司 | Method for centering and grinding tooth grooves of pressed duplex gear |
-
2008
- 2008-12-26 CN CNU2008202380293U patent/CN201320708Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101856795B (en) * | 2009-04-08 | 2011-09-21 | 昆山华辰机器制造有限公司 | Full-automatic digital control roll grinder backup roll belt box grinding device |
| CN102049711B (en) * | 2009-10-27 | 2012-02-29 | 鞍钢重型机械有限责任公司 | Method for grinding large-weight mill roll by holding of static pressure bracket |
| CN102001042A (en) * | 2010-09-27 | 2011-04-06 | 清华大学 | High-speed strong-force snagging machine tool multispindle synergic mixed hydraulic control system and control method |
| CN102001042B (en) * | 2010-09-27 | 2012-12-26 | 清华大学 | High-speed strong-force snagging machine tool multispindle synergic mixed hydraulic control system and control method |
| CN102275105A (en) * | 2011-08-09 | 2011-12-14 | 安徽省尚美精密机械科技有限公司 | Taper plug-in type spindle rotating device and processing equipment |
| CN110757265A (en) * | 2019-11-06 | 2020-02-07 | 新余钢铁股份有限公司 | Grinding method for bearing inner sleeve of acid rolling support roller |
| CN111215707A (en) * | 2020-02-24 | 2020-06-02 | 南京二机齿轮机床有限公司 | Method for centering and grinding tooth grooves of pressed duplex gear |
| CN111215707B (en) * | 2020-02-24 | 2021-03-12 | 南京二机齿轮机床有限公司 | Method for centering and grinding tooth grooves of pressed duplex gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091007 Effective date of abandoning: 20081226 |