CN103480920A - Gear edge and corner grinding machine - Google Patents

Gear edge and corner grinding machine Download PDF

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Publication number
CN103480920A
CN103480920A CN201310336918.9A CN201310336918A CN103480920A CN 103480920 A CN103480920 A CN 103480920A CN 201310336918 A CN201310336918 A CN 201310336918A CN 103480920 A CN103480920 A CN 103480920A
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CN
China
Prior art keywords
gear
screw
servomotor
fixedly connected
slide
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Granted
Application number
CN201310336918.9A
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Chinese (zh)
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CN103480920B (en
Inventor
吴寿光
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Pingyang County Wu Jing Enginerring Works
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Pingyang County Wu Jing Enginerring Works
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Priority to CN201310336918.9A priority Critical patent/CN103480920B/en
Publication of CN103480920A publication Critical patent/CN103480920A/en
Application granted granted Critical
Publication of CN103480920B publication Critical patent/CN103480920B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention relates to the field of gear machining and aims at providing a gear edge and corner grinding machine, which comprises a base, an X-direction movement unit and a Y-direction movement unit which are respectively connected with the base, a gear positioning and rotating device which is connected with the X-direction movement unit, a grinding device which is connected with the Y-direction movement unit, and a controller. When the gear edge and corner grinding machine is used, a gear with edges and corners to be ground is installed on the gear positioning and rotating device, the controller controls the X-direction movement unit, the Y-direction movement unit, the gear positioning and rotating device and the grinding device to perform edge and corner machining to the two end surfaces of the gear with different gear end curves and six edges at the top of the gear according to a set program in a linked way. The gear edge and corner grinding machine has the advantages that the machining accuracy is better, the efficiency is higher and the adaptability to the chamfering of gears with different tooth inclinations is better.

Description

Gear corner angle milling drum
Technical field
The present invention relates to the Gear Processing field, especially a kind of gear corner angle milling drum.
Background technology
To gear both ends of the surface and six of tooth tops, crest line chamfered edge grinding efficiency is low and labour intensity is large by hand; The utility model of Chinese patent notification number CN 2885475Y discloses a kind of gear chamfering grinding apparatus, it consists of support, workpiece sectional fixture, electric grinder, electric grinder installing rack, wherein electric grinder is comprised of high-speed electric expreess locomotive, shell, electric grinder main shaft, bearing etc., it is characterized in that: described electric grinder main shaft and motor transmission shaft are rigidly connected, the electric grinder main shaft diameter of axle is 1.5~2 times of the dimension standard component electric grinder main shaft diameter of axle, heat sink close contact on electric grinder and electric grinder installing rack, to improve radiating effect.This gear chamfering grinding apparatus exists machining accuracy poor, efficiency is lower, the poor deficiency to the gear chamfering adaptability of different tooth gradients, therefore, design a kind of machining accuracy better, efficiency is higher, to the gear chamfering adaptability of different tooth gradients gear corner angle milling drum preferably, becomes problem demanding prompt solution.
Summary of the invention
The objective of the invention is to exist machining accuracy poor in order to overcome current gear chamfering grinding apparatus, efficiency is lower, the poor deficiency to the gear chamfering adaptability of different tooth gradients, provide a kind of machining accuracy better, efficiency is higher, to the gear chamfering adaptability of different tooth gradients gear corner angle milling drum preferably.
Concrete technical scheme of the present invention is:
A kind of gear corner angle milling drum, the X-direction moving cell that comprise base, is connected respectively with base and Y-direction moving cell, the gear locating rotation device be connected with the X-direction moving cell, the grinding attachment and the controller that with the Y-direction moving cell, are connected.When this gear corner angle milling drum uses, the gear that needs the grinding corner angle is contained on gear locating rotation device, and controller is controlled X-direction moving cell, Y-direction moving cell, gear locating rotation device and grinding attachment, by the program interlock of setting, both ends of the surface and six crest lines of tooth top of gear with different increment curves is carried out to the processing of grinding corner angle; This gear corner angle milling drum machining accuracy is better, and efficiency is higher, better to the gear chamfering adaptability of different tooth gradients.
As preferably, described X-direction moving cell comprises the X-direction servomotor be fixedly connected with base, the X-direction slide be connected by the X-direction line slideway with base, X-direction ball-screw, X-direction shaft coupling and X-direction limit switch that with base be fixedly connected with relative with two each ends with the X-direction slide; The X-direction leading screw two ends of X-direction ball-screw respectively with the base pivot joint; The X-direction nut of X-direction ball-screw is fixedly connected with the X-direction slide; The output shaft of X-direction servomotor is connected with an end of X-direction leading screw by the X-direction shaft coupling; X-direction servomotor and X-direction limit switch are electrically connected to controller respectively.The simple and practical precision of X-direction moving cell is high, and the X-direction limit switch plays the safety guarantee effect when misoperation occurring.
As preferably, positioning spindle, regulating sleeve and clamp nut that it is Y-direction that described gear locating rotation device comprises with servomotor the gearbox be fixedly connected with the upper end of X-direction slide, axis direction; Described positioning spindle comprises principal piece that an end is fixedly connected with the output of gearbox, holds and be connected with the other end of principal piece and outside diameter is less than the thread segment that the frustum section of principal piece diameter is connected with small end with the frustum section greatly; Regulating sleeve is provided with the taper hole with frustum section coupling; The servomotor of driven wheel is electrically connected to controller.The simple and practical precision of gear locating rotation apparatus structure is high; Regulating sleeve can have and several of the various outer diameter of different bore coupling, to adapt to the needs of different gear grinding corner angle processing.
As preferably, described gear locating rotation device also comprises gear initial position and abrasion of grinding wheel checkout gear.Gear initial position and abrasion of grinding wheel checkout gear need the signal of adjusting to send controller to Gear Processing initial position, the wearing and tearing of process medium plain emery wheel, and controller is controlled X-direction moving cell, Y-direction moving cell, gear locating rotation device and grinding attachment and adjusted or compensate by the program interlock of setting; When in process, appearance is undesired, gear initial position and abrasion of grinding wheel checkout gear can send signal to controller and control shutdown.
As preferably, described gear initial position and the abrasion of grinding wheel checkout gear vision detection system for being fixedly connected with the output place side of gearbox; Vision detection system is electrically connected to controller.Vision detection system is ripe general part, and cost is low.
As preferably, described Y-direction moving cell comprises that the Y-direction servomotor be fixedly connected with base, the Y-direction slide be connected by the Y-direction line slideway with base, Y-direction ball-screw, Y-direction shaft coupling lay respectively at the two ends of Y-direction slide one side the Y-direction limit switch be fixedly connected with base with two; The Y-direction leading screw two ends of Y-direction ball-screw respectively with the base pivot joint; The Y-direction nut of Y-direction ball-screw is fixedly connected with slide; The output shaft of Y-direction servomotor is connected with an end of Y-direction leading screw by shaft coupling; Y-direction servomotor and Y-direction limit switch are electrically connected to controller respectively.The simple and practical precision of Y-direction moving cell is high, and the Y-direction limit switch plays the safety guarantee effect when misoperation occurring.
As preferably, described grinding attachment comprises the Z-direction mount pad be fixedly connected with the upper end of Y-direction slide, the Z-direction slide be connected by the Z-direction line slideway with the Z-direction mount pad, Z-direction ball-screw, be provided with the servomotor that drives emery wheel and gusset is provided with the abrasive machine of the terminal pad of Z-direction slide pivot joint and is threaded with terminal pad and small end is pushed down at least one lock-screw of Z-direction slide; The two ends of the Z-direction leading screw of Z-direction ball-screw respectively with the pivot joint of Z-direction mount pad; The Z-direction nut of Z-direction ball-screw is fixedly connected with the Z-direction slide; Described grinding attachment is provided with and is connected with an end of Z-direction leading screw and with the rotating disk of handle or be fixedly connected with the Z-direction mount pad and Z-direction servomotor that output shaft is fixedly connected with an end of Z-direction leading screw; The Z-direction servomotor is electrically connected to controller.Grinding attachment can be different according to gear the tooth gradient, rotate abrasive machine to proper angle, rotate rotating disk by Z-direction servomotor or handle, adjust abrasive machine to proper height through Z-direction ball-screw and Z-direction slide.
As preferably, described controller is provided with display screen and alarm.The signal that the wearing and tearing of Gear Processing initial position or process medium plain emery wheel need to adjust send controller to and on display screen directly perceived show and alarm sends chimes of doom, Gear Processing completes alarm and sends chimes of doom, handled easily.
As preferably, described gear corner angle milling drum has dust absorption fan.It is healthy that environmental protection is conducive to the operator.
Compared with prior art, the invention has the beneficial effects as follows: one. this gear corner angle milling drum machining accuracy is better, and efficiency is higher, better to the gear chamfering adaptability of different tooth gradients.Two .X are high to moving cell and the simple and practical precision of Y-direction moving cell, and X-direction limit switch and Y-direction limit switch play the safety guarantee effect when misoperation occurring.Three. the simple and practical precision of gear locating rotation apparatus structure is high; Regulating sleeve can have and several of the various outer diameter of different bore coupling, to adapt to the needs of different gear grinding corner angle processing.Four. gear initial position and abrasion of grinding wheel checkout gear need the signal of adjusting to send controller to Gear Processing initial position, the wearing and tearing of process medium plain emery wheel, and controller is controlled X-direction moving cell, Y-direction moving cell, gear locating rotation device and grinding attachment and adjusted or compensate by the program interlock of setting; When in process, appearance is undesired, gear initial position and abrasion of grinding wheel checkout gear can send signal to controller and control shutdown; Vision detection system is ripe general part, and cost is low.Five. the tooth gradient that grinding attachment can be different according to gear, rotate abrasive machine to proper angle, rotate rotating disk by Z-direction servomotor or handle, adjust abrasive machine to proper height through Z-direction ball-screw and Z-direction slide.Six. the signal that the wearing and tearing of Gear Processing initial position or process medium plain emery wheel need to adjust send controller to and on display screen directly perceived show and alarm sends chimes of doom, Gear Processing completes alarm and sends chimes of doom, handled easily.Seven. gear corner angle milling drum has dust absorption fan, and it is healthy that environmental protection is conducive to the operator.
The accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is the left view of Fig. 1.
In figure: base-1, X-direction moving cell-2, X-direction servomotor-21, X-direction line slideway-22, X-direction slide-23, X-direction shaft coupling-24, X-direction limit switch-25, X-direction leading screw-26, X-direction nut-27, Y-direction moving cell-3, Y-direction servomotor-31, Y-direction line slideway-32, Y-direction slide-33, Y-direction shaft coupling-34, Y-direction limit switch-35, Y-direction leading screw-36, Y-direction nut-37, gear locating rotation device-4, the servomotor of driven wheel-41, gearbox-42, regulating sleeve-43, clamp nut-44, principal piece-45, frustum section-46, thread segment-47, vision detection system-48, taper hole-49, grinding attachment-5, Z-direction mount pad-51, Z-direction line slideway-52, Z-direction slide-53, drive the servomotor-54 of emery wheel, terminal pad-55, abrasive machine-56, lock-screw-57, Z-direction leading screw-58, Z-direction nut-59, handle-510, rotating disk-511, controller-6, display screen-61, alarm-62, dust absorption fan-7.
the specific embodiment
Below in conjunction with shown in accompanying drawing, the present invention is described further.
As shown in accompanying drawing 1, accompanying drawing 2: a kind of gear corner angle milling drum, the X-direction moving cell 2 that comprise base 1, is connected respectively with base 1 and Y-direction moving cell 3, the gear locating rotation device 4 be connected with X-direction moving cell 2, the grinding attachment 5 be connected with Y-direction moving cell 3 and controller 6.
Described X-direction moving cell 2 comprises the X-direction servomotor 21 connected with base 1 screw, the X-direction slide 23 be connected by X-direction line slideway 22 with base 1, X-direction ball-screw, X-direction shaft coupling 24 and two and X-direction limit switches 25 that with base 1 screw be connected relative with an end of X-direction slide 23 respectively; Bearing hinge joint is passed through with base 1 respectively in X-direction leading screw 26 two ends of X-direction ball-screw; The X-direction nut 27 of X-direction ball-screw is connected with X-direction slide 23 screws; The output shaft of X-direction servomotor 21 is connected with an end of X-direction leading screw 26 by X-direction shaft coupling 24.
Positioning spindle, regulating sleeve 43, clamp nut 44 and gear initial position and abrasion of grinding wheel checkout gear that it is Y-direction that described gear locating rotation device 4 comprises with servomotor 41 gearbox 42 be connected with the upper end screw of X-direction slide 23, axis direction; Described positioning spindle comprises principal piece 45 that an end is connected with the output key of gearbox 42, holds and be connected with the other end of principal piece 45 and outside diameter is less than the thread segment 47 that the frustum section 46 of principal piece 45 diameters is connected with small end with frustum section 46 greatly; Regulating sleeve 43 has the taper hole 49 with frustum section 46 couplings.In the present embodiment, described gear initial position and the vision detection system 48 of abrasion of grinding wheel checkout gear for being connected with the output place side screw of gearbox 42.Described gearbox 42 is for becoming tooth thickness involute turbine and worm gearbox.
Described Y-direction moving cell 3 comprises that the Y-direction servomotor 31 be fixedly connected with base 1, the Y-direction slide 33 be connected by Y-direction line slideway 32 with base 1, Y-direction ball-screw, Y-direction shaft coupling 34 lay respectively at the two ends of Y-direction slide 33 1 sides the Y-direction limit switch 35 be connected with base 1 screw with two; Bearing hinge joint is passed through with base 1 respectively in Y-direction leading screw 36 two ends of Y-direction ball-screw; The Y-direction nut 37 of Y-direction ball-screw is connected with the slide screw; The output shaft of Y-direction servomotor 31 is connected with an end of Y-direction leading screw 36 by shaft coupling.
Described grinding attachment 5 comprises the Z-direction mount pad 51 be connected with the upper end screw of Y-direction slide 33, the Z-direction slide 53 be connected by Z-direction line slideway 52 with Z-direction mount pad 51, Z-direction ball-screw, have the servomotor 54 that drives emery wheel and gusset has and is threaded by the abrasive machine 56 of the terminal pad 55 of bearing hinge joint with terminal pad 55 with Z-direction slide 53 and small end is pushed down two lock-screws 57 of Z-direction slide 53; Bearing hinge joint is passed through with Z-direction mount pad 51 respectively in the two ends of the Z-direction leading screw 58 of Z-direction ball-screw; The Z-direction nut 59 of Z-direction ball-screw is connected with Z-direction slide 53 screws; Described grinding attachment 5 has and is connected with an end of Z-direction leading screw 58 and with the rotating disk 511 of handle 510 or be connected with Z-direction mount pad 51 screws and Z-direction servomotor that output shaft is connected with an end key of Z-direction leading screw 58; Drive the servomotor 54 of emery wheel to be electrically connected to controller 6.In the present embodiment, described grinding attachment 5 has and is connected with an end of Z-direction leading screw 58 and with the rotating disk 511 of handle 510.
Servomotor 54, the vision detection system 48 of the servomotor 41 of X-direction servomotor 21, X-direction limit switch 25, Y-direction servomotor 31, Y-direction limit switch 35, driven wheel, driving emery wheel are electrically connected to controller 6 respectively; Described controller 6 has display screen 61 and alarm 62; Alarm 62 is language alarm.
Described gear corner angle milling drum has dust absorption fan 7.
When this gear corner angle milling drum uses, the gear set specifications of grinding corner angle is selected the regulating sleeve 43 of external diameter and gear coupling as required, clamp nut 44 is threaded with thread segment 47 and pushes down regulating sleeve 43 and gear, transmitting gear is to initial processing position, the different tooth gradient according to gear, rotate abrasive machine 56 to proper angle and screw lock-screw 57 and be fixed, rotate rotating disk 511 by handle 510, adjust abrasive machine 56 to proper height through Z-direction ball-screw and Z-direction slide 53, controller 6 is controlled X-direction servomotor 21, Y-direction servomotor 31, the servo electricity of driven wheel and servomotor 54 machines that drive emery wheel carry out the processing of grinding corner angle by the program interlock of setting to both ends of the surface and six crest lines of tooth top of gear with different increment curves, gear initial position and abrasion of grinding wheel checkout gear need the signal of adjusting send controller 6 to and intuitively show on display screen 61 to Gear Processing initial position, the wearing and tearing of process medium plain emery wheel, and controller 6 is controlled the servo electricity of X-direction servomotor 21, Y-direction servomotor 31, driven wheel and driven servomotor 54 machines of emery wheel to be adjusted or compensate by the program interlock of setting, when in process, appearance is undesired, gear initial position and abrasion of grinding wheel checkout gear can send signal to controller 6 and control shutdown, and alarm 62 sends chimes of doom, Gear Processing completes alarm 62 and sends chimes of doom, X-direction limit switch 25 and Y-direction limit switch 35 play the safety guarantee effect when misoperation occurring.
The invention has the beneficial effects as follows: this gear corner angle milling drum machining accuracy is better, and efficiency is higher, better to the gear chamfering adaptability of different tooth gradients.X-direction moving cell and the simple and practical precision of Y-direction moving cell are high, and X-direction limit switch and Y-direction limit switch play the safety guarantee effect when misoperation occurring.The simple and practical precision of gear locating rotation apparatus structure is high; Regulating sleeve can have and several of the various outer diameter of different bore coupling, to adapt to the needs of different gear grinding corner angle processing.Gear initial position and abrasion of grinding wheel checkout gear need the signal of adjusting to send controller to Gear Processing initial position, the wearing and tearing of process medium plain emery wheel, and controller is controlled X-direction moving cell, Y-direction moving cell, gear locating rotation device and grinding attachment and adjusted or compensate by the program interlock of setting; When in process, appearance is undesired, gear initial position and abrasion of grinding wheel checkout gear can send signal to controller and control shutdown; Vision detection system is ripe general part, and cost is low.Grinding attachment can be different according to gear the tooth gradient, rotate abrasive machine to proper angle, rotate rotating disk by Z-direction servomotor or handle, adjust abrasive machine to proper height through Z-direction ball-screw and Z-direction slide.The signal that the wearing and tearing of Gear Processing initial position or process medium plain emery wheel need to adjust send controller to and on display screen directly perceived show and alarm sends chimes of doom, Gear Processing completes alarm and sends chimes of doom, handled easily.Gear corner angle milling drum has dust absorption fan, and it is healthy that environmental protection is conducive to the operator.
It is apparent to one skilled in the art that the present invention can change into various ways, and such change is not thought and departed from the scope of the present invention.All so apparent modifications of the technical staff to described field, within being included in the scope of this claim.

Claims (8)

1. a gear corner angle milling drum is characterized in that: the X-direction moving cell that comprise base, is connected respectively with base and Y-direction moving cell, the gear locating rotation device be connected with the X-direction moving cell, the grinding attachment and the controller that with the Y-direction moving cell, are connected.
2. gear corner angle milling drum according to claim 1 is characterized in that: described X-direction moving cell comprises the X-direction servomotor be fixedly connected with base, the X-direction slide be connected by the X-direction line slideway with base, X-direction ball-screw, X-direction shaft coupling and X-direction limit switch that with base be fixedly connected with relative with two each ends with the X-direction slide; The X-direction leading screw two ends of X-direction ball-screw respectively with the base pivot joint; The X-direction nut of X-direction ball-screw is fixedly connected with the X-direction slide; The output shaft of X-direction servomotor is connected with an end of X-direction leading screw by the X-direction shaft coupling; X-direction servomotor and X-direction limit switch are electrically connected to controller respectively.
3. gear corner angle milling drum according to claim 2 is characterized in that: positioning spindle, regulating sleeve and clamp nut that it is Y-direction that described gear locating rotation device comprises with servomotor the gearbox be fixedly connected with the upper end of X-direction slide, axis direction; Described positioning spindle comprises principal piece that an end is fixedly connected with the output of gearbox, holds and be connected with the other end of principal piece and outside diameter is less than the thread segment that the frustum section of principal piece diameter is connected with small end with the frustum section greatly; Regulating sleeve is provided with the taper hole with frustum section coupling; The servomotor of driven wheel is electrically connected to controller.
4. gear corner angle milling drum according to claim 3, it is characterized in that: described gear locating rotation device also comprises gear initial position and abrasion of grinding wheel checkout gear.
5. gear corner angle milling drum according to claim 4, is characterized in that: described gear initial position and the vision detection system of abrasion of grinding wheel checkout gear for being fixedly connected with the output place side of gearbox; Vision detection system is electrically connected to controller.
6. according to claim 1 or 2 or 3 or 4 or 5 described gear corner angle milling drums, it is characterized in that: described Y-direction moving cell comprises that the Y-direction servomotor be fixedly connected with base, the Y-direction slide be connected by the Y-direction line slideway with base, Y-direction ball-screw, Y-direction shaft coupling lay respectively at the two ends of Y-direction slide one side the Y-direction limit switch be fixedly connected with base with two; The Y-direction leading screw two ends of Y-direction ball-screw respectively with the base pivot joint; The Y-direction nut of Y-direction ball-screw is fixedly connected with slide; The output shaft of Y-direction servomotor is connected with an end of Y-direction leading screw by shaft coupling; Y-direction servomotor and Y-direction limit switch are electrically connected to controller respectively.
7. gear corner angle milling drum according to claim 6 is characterized in that: described grinding attachment comprises the Z-direction mount pad be fixedly connected with the upper end of Y-direction slide, the Z-direction slide be connected by the Z-direction line slideway with the Z-direction mount pad, Z-direction ball-screw, be provided with the servomotor that drives emery wheel and gusset is provided with the abrasive machine of the terminal pad of Z-direction slide pivot joint and is threaded with terminal pad and small end is pushed down at least one lock-screw of Z-direction slide; The two ends of the Z-direction leading screw of Z-direction ball-screw respectively with the pivot joint of Z-direction mount pad; The Z-direction nut of Z-direction ball-screw is fixedly connected with the Z-direction slide; Described grinding attachment is provided with and is connected with an end of Z-direction leading screw and with the rotating disk of handle or be fixedly connected with the Z-direction mount pad and Z-direction servomotor that output shaft is fixedly connected with an end of Z-direction leading screw; The Z-direction servomotor is electrically connected to controller.
8. according to claim 1 or 2 or 3 or 4 or 5 described gear corner angle milling drums, it is characterized in that: described controller is provided with display screen and alarm.
CN201310336918.9A 2013-08-05 2013-08-05 Gear corner angle milling drum Expired - Fee Related CN103480920B (en)

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CN103480920B CN103480920B (en) 2015-11-25

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2885475Y (en) * 2006-05-19 2007-04-04 上海飞华汽车部件有限公司 Gear chamfering grinding apparatus
CN201534248U (en) * 2009-10-27 2010-07-28 天津市精诚机床制造有限公司 Machine tool structure of three-axis numerically-controlled gear chamfering machine
CN201969964U (en) * 2010-12-02 2011-09-14 天津市进口精密设备新技术发展公司 Numerical control gear chamfering machine
US20130022424A1 (en) * 2009-11-13 2013-01-24 Chunliang Hsiao Face hob hypoid gear tooth top-land radius by common chamfer tool
CN202824879U (en) * 2012-05-09 2013-03-27 温岭市宇弘机械设备有限公司 Improved type wheel gear grinding machine
RU2478026C1 (en) * 2011-12-14 2013-03-27 Федеральное государственное унитарное предприятие "Научно-производственный центр газотурбостроения "Салют" (ФГУП "НПЦ газотурбостроения "Салют") Unit to cut involute chamfers
CN203437766U (en) * 2013-08-05 2014-02-19 平阳县吴经机械制造厂 Gear corner angle grinding machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2885475Y (en) * 2006-05-19 2007-04-04 上海飞华汽车部件有限公司 Gear chamfering grinding apparatus
CN201534248U (en) * 2009-10-27 2010-07-28 天津市精诚机床制造有限公司 Machine tool structure of three-axis numerically-controlled gear chamfering machine
US20130022424A1 (en) * 2009-11-13 2013-01-24 Chunliang Hsiao Face hob hypoid gear tooth top-land radius by common chamfer tool
CN201969964U (en) * 2010-12-02 2011-09-14 天津市进口精密设备新技术发展公司 Numerical control gear chamfering machine
RU2478026C1 (en) * 2011-12-14 2013-03-27 Федеральное государственное унитарное предприятие "Научно-производственный центр газотурбостроения "Салют" (ФГУП "НПЦ газотурбостроения "Салют") Unit to cut involute chamfers
CN202824879U (en) * 2012-05-09 2013-03-27 温岭市宇弘机械设备有限公司 Improved type wheel gear grinding machine
CN203437766U (en) * 2013-08-05 2014-02-19 平阳县吴经机械制造厂 Gear corner angle grinding machine

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