CN115464214B - Gear part hobbing system - Google Patents
Gear part hobbing system Download PDFInfo
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- CN115464214B CN115464214B CN202211366168.5A CN202211366168A CN115464214B CN 115464214 B CN115464214 B CN 115464214B CN 202211366168 A CN202211366168 A CN 202211366168A CN 115464214 B CN115464214 B CN 115464214B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F5/00—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made
- B23F5/20—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by milling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
- B23F23/02—Loading, unloading or chucking arrangements for workpieces
- B23F23/04—Loading or unloading arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
- B23F23/12—Other devices, e.g. tool holders; Checking devices for controlling workpieces in machines for manufacturing gear teeth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/06—Driving main working members rotary shafts, e.g. working-spindles driven essentially by fluid pressure or pneumatic power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Gear Processing (AREA)
Abstract
The invention discloses a gear piece hobbing system, which comprises a rack, a workpiece clamping table, a tool rest for installing a hob, a variable-speed toothed belt and a gear pump, wherein the variable-speed toothed belt is driven by a fixed wheel disc and a movable wheel disc, the fixed wheel disc is fixedly sleeved on a fixed shaft, the fixed shaft is connected with a synchronous rod through a synchronous belt, and the synchronous rod is fixedly connected with the workpiece clamping table; the movable wheel disc is fixedly sleeved on the movable shaft, the movable shaft is fixedly connected with a gear shaft of the gear pump, the driving gear pump is used for supplying oil to a hydraulic motor for driving the hob to rotate, a stable power transmission relation can be formed between a workpiece of the gear piece hobbing processing system and the hob, the forming processing precision of the gear is high, the applicability of the whole system processing is improved due to the variable speed toothed belt, stable speed change and power transmission can be kept, meanwhile, the stability of hydraulic pressure is ensured, and the processing quality of the whole system is stable.
Description
Technical Field
The invention relates to the technical field of gear machining, in particular to a gear piece hobbing system.
Background
The hobbing gears can be regarded as a gear-and-rack transmission without meshing play. When the hobbing rotates for one circle, the rack moves one cutter tooth in the normal direction, and the hob continuously drives as if one endless rack continuously moves. When the hob and the gear hobbing blank are in forced meshing transmission strictly according to the transmission ratio of the gear to the rack, the envelope curve of the hob tooth at a series of positions forms an involute tooth shape of the workpiece. Along with the vertical feeding of the hob, the required involute profile can be rolled out. In order to obtain the involute profile and gear tooth count, the hob and the workpiece must maintain a strict relative motion relationship during hob formation. When the hob is machined, the hob and the workpiece need to be matched with each other in relative position, so that a power source is independently arranged for the hob and the workpiece by common hobbing equipment to carry out separated driving, and due to errors in a motor, a stable relative motion relationship cannot be formed between the hob and the workpiece, and further the machining precision of hobbing is affected.
Disclosure of Invention
The invention aims to solve the problem that a hob and a workpiece are independently provided with a power source in the prior art, and a stable relative motion relation cannot be formed between the hob and the workpiece.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the gear piece hobbing system comprises a frame, wherein the frame is provided with a workpiece clamping table and a cutter rest for installing a hob, and the workpiece clamping table is rotatably connected with the frame. The knife rest is movably connected with the frame, so that the relative position between the hob and the workpiece can be conveniently adjusted. Preferably, the frame is provided with a vertical oil cylinder for driving the tool rest to move in the vertical direction and a horizontal oil cylinder for driving the tool rest to move in the horizontal direction, and the hob can move relative to the workpiece. The knife rest is in sliding connection with the frame in the horizontal direction through the horizontal sliding block, and the knife rest is in sliding connection with the horizontal sliding block in the vertical direction through the vertical sliding block, and the knife rest forms stable connection with the frame, reduces the vibrations of hobbing cutter when rotatory.
Further, the bottom of the workpiece clamping table is provided with a synchronizing rod, an active synchronizing wheel is fixedly sleeved on the synchronizing rod, a passive synchronizing wheel is fixedly sleeved on the fixed shaft, and the active synchronizing wheel is connected with the passive synchronizing wheel through a synchronizing belt. The end fixed connection of fixed axle presses the gear shaft of oil gear pump, press oil gear pump's oil feed end and coolant tank intercommunication, press oil gear pump's play oil end and coolant pipe intercommunication, the play liquid end of coolant pipe extends to the top of work piece holder, set up the cistern that is used for splendid attire coolant around the work piece holder. The synchronous belt transmits the rotary power of the workpiece clamping table to the fixed shaft, and the rotation of the fixed shaft can drive the oil pressing gear pump to work, so that the cooling liquid can cool the workpiece processing part, and the power sharing is realized.
Further, the upper end of the fixed shaft is provided with a speed-changing toothed belt, and the speed-changing toothed belt is supported and rotated by the fixed wheel disc and the movable wheel disc. Specifically, all support the inner circle of variable speed toothed belt through adjusting the telescopic link on fixed rim plate and the movable rim plate, adjust the telescopic link including oil drum, connecting rod, movable gear and with the inside adjusting piston who matches of oil drum, the one end fixed connection adjusting piston of connecting rod, the other end swivelling joint movable gear of connecting rod, movable gear is with the meshing of variable speed toothed belt. The rotating speed of the movable wheel disc can be changed by adjusting the extension or shortening of the telescopic rod.
And an oil cylinder of the adjusting telescopic rod on the fixed wheel disc is communicated with the fixed sleeve to form a fixed oil cavity. The oil cylinder of the adjusting telescopic rod on the movable wheel disc is communicated with the movable sleeve to form an movable oil cavity. The fixed piston inside the fixed sleeve is connected with the movable piston inside the movable sleeve through an adjusting oil cylinder. The fixed oil cavity and the movable oil cavity are respectively provided with synchronous limit lines (connected, the fixed oil cavity and the movable oil cavity are respectively provided with support seats for synchronous limit lines (the inner diameters of the fixed sleeve and the movable sleeve are N times of the inner diameters of the oil cylinder, N is the number of adjusting telescopic rods on the fixed wheel disc or the movable wheel disc, and therefore synchronous movement of each adjusting piston relative to the fixed piston or the movable piston can be achieved, the phenomenon that the movement stroke of the adjusting piston is different due to the fact that the pressure of each movable gear is different is avoided, synchronous change of the lengths of all adjusting telescopic rods of the fixed wheel disc or the movable wheel disc during speed change is kept, and stable speed change and power transmission are kept.
When the stroke of the adjusting oil cylinder is unchanged, the fixed piston can drive the movable piston to move, so that the volume of oil in the oil cylinder is changed, the length of the adjusting telescopic rod is further changed, and the radius ratio between the fixed wheel disc and the movable wheel disc is changed.
Because the length of the variable-speed toothed belt is fixed, the distance between the fixed wheel disc and the movable wheel disc needs to be adjusted in order to adapt to the length change of the adjusting telescopic rod. And a tension sensor is arranged on the speed-changing toothed belt, and the adjusting oil cylinder is used for adjusting the distance between the fixed wheel disc and the movable wheel disc according to the target value of the tension sensor, so that the effective and stable work of the speed-changing toothed belt is maintained. Further, the outside of fixed sleeve cup joints fixed axle sleeve, fixed axle sleeve and frame fixed connection. The outside of movable sleeve cup joints movable sleeve, movable sleeve and frame sliding connection still set up synchronous cylinder between movable sleeve and the frame, synchronous cylinder and adjusting cylinder synchronous flexible. The synchronous oil cylinder can synchronously stretch and retract along with the adjusting oil cylinder, so that the movable wheel disc can integrally move, and the movable sleeve keeps the movable piston to be free from relative movement with respect to the fixed piston through synchronous movement in the moving process of the fixed piston.
Further, the frame is provided with a driving component for driving the fixed piston to move. Preferably, the driving assembly comprises an adjusting screw rod and an adjusting nut which are matched, the adjusting nut is fixedly connected with the fixed piston, and the adjusting screw rod and the fixed piston are coaxially arranged. The adjusting screw is rotatably connected with the frame, the frame is provided with an adjusting motor for driving the adjusting screw to rotate, and the adjusting motor can drive the adjusting screw to rotate so as to drive the adjusting nut and the fixed piston to move.
Further, the fixed piston is located the inside one end of fixed sleeve and the inside one end of movable piston is located movable sleeve and sets up vibrating spring respectively, and vibrating spring can produce the vibration behind fixed piston, and this vibration is used for driving the inside vibration of hydraulic oil of fixed sleeve or movable sleeve, reduces the viscosity of hydraulic oil to sleeve wall or oil drum, strengthens the mobility of hydraulic oil to the timely flow and the corresponding holding chamber that are full of hydraulic oil in oil drum, fixed sleeve or movable sleeve inside.
Further, adjusting nut fixed connection extension rod, set up spacing cardboard on the extension rod, be connected through the pressure spring between spacing cardboard and the extension rod, the joint face of spacing cardboard is the zigzag surface. The outside of fixed sleeve and movable sleeve sets up the spacing draw-in groove that matches with spacing cardboard respectively, and spacing draw-in groove is the zigzag face promptly also. The pressing spring can press the limiting clamping plate on the limiting clamping groove and is used for limiting the displacement of the fixed piston. When the adjusting nut drives the extension rod and the limiting clamping plate to move, the pressing spring can be compressed, and the limiting clamping plate can move along the zigzag surface of the limiting clamping groove.
It is worth to say that the distance between the sawtooth on the zigzag surface on the spacing cardboard equals the pitch of adjusting the lead screw, and the sawtooth position staggers with the thread position of adjusting the lead screw, avoids adjusting the axial float of nut on adjusting the lead screw, keeps fixed piston and movable piston to the stable exerting pressure of hydraulic pressure.
Further, the movable wheel disc is fixedly sleeved on the movable shaft, the movable shaft is fixedly connected with a gear shaft of the driving gear pump, and the driving gear pump and the movable shaft are both in sliding connection with the frame and are used for adapting to the position movement of the movable wheel disc. The oil inlet end of the driving gear pump is connected with the hydraulic oil tank through an oil inlet pipe, the oil outlet end of the driving gear pump is connected with the oil inlet of the hydraulic motor for driving the hob to rotate, the oil outlet end of the hydraulic motor is connected with the oil tank through an oil outlet pipe, and a flow stabilizing valve is arranged between the oil outlet end of the gear pump and the oil inlet of the hydraulic motor and used for keeping stable output of the hydraulic motor and facilitating stable rotation of the hob.
The beneficial effects of the invention are as follows:
1. the hob driving force of the gear piece hobbing system and the output power of the cooling liquid come from the rotating force of the workpiece clamping table, so that the structure is compact, and the power sharing is realized; meanwhile, the hob driving force comes from power transmission through a synchronous belt, a variable-speed toothed belt, a driving gear pump and a hydraulic motor, and a stable power transmission relation can be formed between the workpiece and the hob, so that the accuracy of gear forming and machining is maintained.
2. The gear piece gear hobbing system speed-changing toothed belt simultaneously controls to carry out speed-changing adjustment by using hydraulic pressure and limiting lines, keeps stable speed change and power transmission, locks a hydraulic pressing piece through staggered teeth, keeps stable supporting performance of the hydraulic pressing piece on hydraulic pressure, further keeps stable transmission ratio between a workpiece and a hob, and ensures processing precision.
3. The variable-speed toothed belt of the gear piece hobbing system can form different speed ratios between the hob and the workpiece, improves the applicability of the gear piece hobbing system, and can select the hob to process the workpieces with different specifications according to requirements.
In conclusion, the workpiece and the hob of the gear piece hobbing system can form a stable power transmission relation, the forming machining precision of the gear is high, the applicability of the whole system machining is improved by the speed-changing toothed belt, meanwhile, the speed-changing toothed belt can keep stable speed change and power transmission, meanwhile, the stability of hydraulic pressure is guaranteed, and the machining quality is stable.
Drawings
FIG. 1 is a schematic diagram of a gear member hobbing system;
FIG. 2 is a schematic diagram of the structure of the gear piece hobbing system at the variable speed toothed belt;
FIG. 3 is a schematic view of the structure of the gear piece hobbing system at the fixed sheave;
fig. 4 is a schematic diagram of the gear hobbing system of the present gear member at the variable speed toothed belt a.
In the figure: 1. a frame; 2. a workpiece clamping table; 3. a cooling liquid tank; 4. a tool holder; 5. a hob; 6. a hydraulic motor; 7. a synchronizing lever; 8. a synchronous belt; 9. a variable speed toothed belt; 10. driving a gear pump; 11. a fixed shaft; 12. a movable shaft; 13. an oil inlet pipe; 14. an oil outlet pipe; 15. a steady flow valve; 16. a coolant tube; 17. a liquid tank; 18. adjusting a screw rod; 19. an adjusting nut; 20. an adjusting oil cylinder; 21. a synchronous oil cylinder; 31. a pressure oil gear pump; 41. a vertical cylinder; 42. a vertical slider; 43. a horizontal cylinder; 44. a horizontal slider; 81. a driving synchronizing wheel; 82. a passive synchronizing wheel; 91. fixing the wheel disc; 92. a movable wheel disc; 93. adjusting the telescopic rod; 94. fixing the oil cavity; 95. a fixed piston; 96. a movable oil chamber; 97. a movable piston; 98. a vibration spring; 99. synchronous limit lines; 191. a limiting clamping plate; 192. an extension rod; 193. a pressing spring; 194. a limit clamping groove; 931. an oil drum; 932. a connecting rod; 933. an adjusting piston; 934. a movable gear; 941. a fixed sleeve; 942. fixing the shaft sleeve; 961. a movable sleeve; 962. a movable shaft sleeve.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1, the gear member hobbing system comprises a frame 1, wherein the frame 1 is provided with a workpiece clamping table 2 and a cutter frame 4 for mounting a hob 5, and the workpiece clamping table 2 is rotatably connected with the frame 1. The knife rest 4 is movably connected with the frame 1, so that the relative position between the hob 5 and the workpiece can be conveniently adjusted. Further, the frame 1 is provided with a vertical cylinder 41 for driving the tool rest 4 to move in a vertical direction and a horizontal cylinder 43 for driving the tool rest 4 to move in a horizontal direction, and the hob 5 can move relative to the workpiece. The tool rest 4 is in sliding connection with the machine frame in the horizontal direction through the horizontal sliding block 44, the tool rest 4 is in sliding connection with the horizontal sliding block 44 in the vertical direction through the vertical sliding block 42, the tool rest 4 is stably connected with the machine frame, and vibration of the hob 5 during rotation is reduced.
Further, the bottom of the workpiece clamping table 2 is connected with a rotating motor through a synchronizing rod 7, an active synchronizing wheel 81 is fixedly sleeved on the synchronizing rod 7, a passive synchronizing wheel 82 is fixedly sleeved on a fixed shaft 11, the active synchronizing wheel 81 and the passive synchronizing wheel 82 are connected through a synchronous belt 8, and the synchronous belt 8 in the embodiment is a toothed belt. The end of fixed axle 11 fixed connection presses the gear shaft of oil gear pump 31, press the oil end and the coolant tank 3 intercommunication of oil gear pump 31, press the oil end and the coolant pipe 16 intercommunication of oil gear pump 31, the liquid end of coolant pipe 16 extends to the top of work piece gripping platform 2, set up the cistern 17 that is used for splendid attire coolant around the work piece gripping platform 2. The synchronous belt 8 transmits the rotary power of the workpiece clamping table to the fixed shaft 11, and the rotation of the fixed shaft 11 can drive the pressure oil gear pump 31 to work, so that the cooling of the cooling liquid on the workpiece processing part is realized, and the power sharing is realized.
Further, the upper end of the fixed shaft 11 is provided with a variable speed toothed belt 9, and referring to fig. 2 and 3, the variable speed toothed belt 9 is supported and rotated by a fixed sheave 91 and a movable sheave 92. Specifically, the fixed wheel disc 91 and the movable wheel disc 92 support the inner ring of the gear belt 9 through an adjusting telescopic rod 93, the adjusting telescopic rod 93 comprises an oil drum 931, a connecting rod 932, a movable gear 934 and an adjusting piston 933 matched with the oil drum 931, one end of the connecting rod 932 is fixedly connected with the adjusting piston 933, the other end of the connecting rod 932 is rotatably connected with the movable gear 934, and the movable gear 934 is meshed with the gear belt 9. Adjusting the extension or retraction of the telescoping rod 93 changes the rotational speed of the movable sheave 92.
The oil drum 931 of the adjusting expansion rod 93 on the fixed disk 91 is communicated with the fixed sleeve 941 to form a fixed oil chamber 94. The oil drum 931 of the adjusting telescopic rod 93 on the movable wheel 92 is communicated with the movable sleeve 961 to form a movable oil chamber 96. The fixed piston 95 inside the fixed sleeve 941 is connected with the movable piston 97 inside the movable sleeve 961 through the adjusting cylinder 20. The adjusting pistons 933 on the fixed wheel disc 91 and the fixed pistons 95 and the adjusting pistons 933 on the movable wheel disc 92 are respectively connected with the movable sleeve 961 through synchronous limiting lines (99), the fixed oil cavity 94 and the movable oil cavity 96 are respectively provided with supporting seats for synchronously limiting the steering of the lines (99), the inner diameters of the fixed sleeve 941 and the movable sleeve 961 are N times of the inner diameter of the oil drum 931, N is the number of the adjusting telescopic rods 93 on the fixed wheel disc 91 or the movable wheel disc 92, synchronous movement of each adjusting piston 933 relative to the fixed pistons 95 or the movable pistons 97 can be realized, the fact that the movement strokes of the adjusting pistons 933 are different due to the fact that the movable gears 934 are pressed differently is avoided, and the synchronous change of the lengths of all the adjusting telescopic rods 93 of the fixed wheel disc 91 or the movable wheel disc 92 during speed change is maintained, so that stable speed change and power transmission are maintained.
When the stroke of the adjusting cylinder 20 is unchanged, the fixed piston 95 can drive the movable piston 97 to move, so that the volume of oil in the oil drum 931 is changed, the length of the adjusting telescopic rod 93 is further changed, and the radius ratio between the fixed wheel disc 91 and the movable wheel disc 92 is changed.
Since the length of the shift toothed belt 9 is fixed, the distance between the fixed sheave 91 and the movable sheave 92 needs to be adjusted in order to accommodate the length change of the adjustment telescoping rod 93. The tension sensor is arranged on the speed change toothed belt 9, and the adjusting oil cylinder 20 is used for adjusting the distance between the fixed wheel disc 91 and the movable wheel disc 92 according to the target value of the tension sensor, so that the effective and stable work of the speed change toothed belt 9 is maintained. Further, the fixing sleeve 941 is sleeved with a fixing sleeve 942, and the fixing sleeve 942 is fixedly connected with the frame. The outside of the movable sleeve 961 is sleeved with a movable shaft sleeve 962, the movable shaft sleeve 962 is in sliding connection with the frame, a synchronous oil cylinder 21 is further arranged between the movable shaft sleeve 962 and the frame, and the synchronous oil cylinder 21 and the adjusting oil cylinder 20 synchronously stretch out and draw back. The synchronous cylinder 21 can synchronously extend and retract along with the adjusting cylinder 20, so that the movable wheel disc 92 can integrally move, and the movable sleeve 961 keeps the movable piston 97 from moving relative to the movable sleeve 961 by synchronous movement in the process of moving the fixed piston 95.
Further, the frame 1 is provided with a driving assembly for driving the fixed piston 95 to move. In this embodiment, the driving assembly includes a matched adjusting screw 18 and an adjusting nut 19, the adjusting nut 19 is fixedly connected with a fixed piston 95, and the adjusting screw 18 and the fixed piston 95 are coaxially disposed. The adjusting screw 18 is rotatably connected with the frame 1, the frame is provided with an adjusting motor for driving the adjusting screw 18 to rotate, and the adjusting motor can drive the adjusting screw 18 to rotate so as to drive the adjusting nut 19 and the fixed piston 95 to move.
Further, the fixed piston 95 is located at one end inside the fixed sleeve 941 and the movable piston 97 is located at one end inside the movable sleeve 961, and vibration springs 98 are respectively disposed at one end inside the movable sleeve 961, and the vibration springs 98 can generate vibration after the fixed piston 95, and the vibration is used for driving the vibration of hydraulic oil inside the fixed sleeve 941 or the movable sleeve 961, reducing viscosity of the hydraulic oil to the sleeve wall or the oil cylinder 931, enhancing fluidity of the hydraulic oil, so that the hydraulic oil flows inside the oil cylinder 931, the fixed sleeve 941 or the movable sleeve 961 in time and fills corresponding containing cavities.
Further, the adjusting nut 19 is fixedly connected with an extension rod 192, referring to fig. 4, a limiting clamping plate 191 is disposed on the extension rod 192, the limiting clamping plate 191 is connected with the extension rod 192 through a pressing spring 193, and a clamping surface of the limiting clamping plate 191 is a zigzag surface. The outer parts of the fixed sleeve 941 and the movable sleeve 961 are respectively provided with a limit clamping groove 194 matched with the limit clamping plate 191, that is, the limit clamping groove 194 is also a saw-tooth surface. The pressing spring 193 can press the limiting clamping plate 191 onto the limiting clamping groove 194 for limiting the displacement of the fixed piston 95. When the adjusting nut 19 drives the extension rod 192 and the limiting clamp 191 to move, the pressing spring 193 can be compressed, and the limiting clamp 191 can move along the saw-tooth surface of the limiting clamp groove 194.
It should be noted that, the distance between the saw teeth on the saw tooth surface on the limiting clamping plate 191 is equal to the pitch of the adjusting screw 18, and the saw tooth position is staggered from the screw tooth position of the adjusting screw 18, so as to avoid the axial movement of the adjusting nut 19 on the adjusting screw 18, and keep the stable pressure applied by the fixed piston 95 and the movable piston 97 to the hydraulic pressure.
Further, the movable wheel disc 92 is fixedly sleeved on the movable shaft 12, the movable shaft 12 is fixedly connected with a gear shaft of the driving gear pump 10, an oil inlet end of the driving gear pump 10 is connected with a hydraulic oil tank through an oil inlet pipe 13, an oil outlet end of the driving gear pump 10 is connected with an oil inlet of the hydraulic motor 6 for driving the hob 5 to rotate through a hose, an oil outlet end of the hydraulic motor 6 is connected with the oil tank through an oil outlet pipe 14, and a steady flow valve 15 is arranged on the hose and used for keeping stable output of the hydraulic motor 6 and stable operation of the hob 5.
The working process of the gear piece hobbing system in this embodiment includes:
and (one) a speed ratio adjusting process: the adjusting motor can drive the adjusting screw rod 18 to rotate, then drive the adjusting nut 19 and the fixed piston 95 to move, and the fixed piston 95 drives the movable piston 97 to move, so that the volume of oil in the oil drum 931 is changed, and then the length of the adjusting telescopic rod 93 is changed, and the radius ratio between the fixed wheel disc 91 and the movable wheel disc 92 is changed. Under the action of the synchronous limiting line (99), the adjusting piston 933 synchronously moves relative to the fixed piston 95 or the movable piston 97, and the lengths of all the adjusting telescopic rods 93 of the fixed wheel disc 91 or the movable wheel disc 92 synchronously change during speed change, so that stable speed change is realized.
Meanwhile, the adjusting cylinder 20 adjusts the distance between the fixed wheel disc 91 and the movable wheel disc 92 according to the target value of the tension sensor on the speed change toothed belt 9, so that the effective and stable work of the speed change toothed belt 9 is maintained, the synchronous cylinder 21 follows the adjusting cylinder 20 to synchronously stretch and retract, the movable wheel disc 92 can integrally move, and the movable sleeve 961 keeps the movable piston 97 relatively to the fixed piston 95 from moving relatively through synchronous movement in the moving process of the fixed piston 95.
In the above process, the adjusting nut 19 drives the extension rod 192 and the limiting clamp plate 191 to move, the pressing spring 193 is compressed, and the limiting clamp plate 191 can move along the zigzag surface of the limiting clamp groove 194; when the speed change is completed, the saw teeth of the limiting clamping plate 191 are clamped into the saw tooth surfaces of the limiting clamping grooves 194, the saw tooth positions of the limiting clamping plate 191 are staggered from the screw tooth positions of the adjusting screw rod 18, the adjusting nut 19 does not axially move on the adjusting screw rod 18, the fixed piston 95 and the movable piston 97 are kept to stably press the hydraulic pressure, and the stable transmission ratio between the workpiece and the hob is kept.
And (II) the processing process: the workpiece to be processed is arranged on the workpiece clamping table 2, the rotating motor is started, the rotating motor drives the synchronous rod 7 to rotate, the synchronous rod 7 drives the fixed shaft 11 to rotate through the synchronous belt 8, the fixed shaft 11 rotates to drive the oil gear pump 31 to work, cooling of cooling liquid to a workpiece processing part is achieved, meanwhile, the fixed wheel disc 91 on the fixed shaft 11 rotates, the fixed wheel disc 91 drives the movable wheel disc 92 to rotate through the speed change toothed belt 9, and then the movable shaft 12 is driven to rotate, the movable shaft 12 drives the driving gear pump 10 to work, the driving gear pump 10 supplies oil to the hydraulic motor 6, and the hydraulic motor 6 drives the hob 5 to rotate. The vertical cylinder 41 and the horizontal cylinder 43 are adjusted so that the hob 5 performs hob processing on a workpiece.
The workpiece and the hob of the gear piece hobbing system can form a stable power transmission relation, the forming and processing precision of the gear is high, the applicability of the whole system processing is improved by the variable-speed toothed belt, stable speed change and power transmission can be maintained, meanwhile, stable hydraulic pressure is ensured, and the processing quality of the whole system is stable.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (7)
1. The gear hobbing system comprises a frame (1), a workpiece clamping table (2) rotatably connected with the frame (1), a tool rest (4) movably connected with the frame and used for installing a hob (5), and is characterized by further comprising a speed changing toothed belt (9) and a driving gear pump (10), wherein the speed changing toothed belt (9) is driven by a fixed wheel disc (91) and a movable wheel disc (92), the fixed wheel disc (91) and the movable wheel disc (92) are respectively used for supporting the inner ring of the speed changing toothed belt (9) through an adjusting telescopic rod (93), the adjusting telescopic rod (93) comprises an oil drum (931), a connecting rod (932), a movable gear (934) meshed with the speed changing toothed belt (9) and an adjusting piston (933) matched with the interior of the oil drum (931), one end of the connecting rod (932) is fixedly connected with the adjusting piston (933), and the other end of the connecting rod (932) is rotatably connected with the movable gear (934);
the oil cylinder (931) of the adjusting telescopic rod (93) on the fixed wheel disc (91) is communicated with the fixed sleeve (941), the oil cylinder (931) of the adjusting telescopic rod (93) on the movable wheel disc (92) is communicated with the movable sleeve (961), and the fixed piston (95) in the fixed sleeve (941) is connected with the movable piston (97) in the movable sleeve (961) through the adjusting oil cylinder (20);
the adjusting piston (933) on the fixed wheel disc (91) is connected with the fixed piston (95) and the adjusting piston (933) on the movable wheel disc (92) is connected with the movable sleeve (961) through a synchronous limit line (99), the inner diameters of the fixed sleeve (941) and the movable sleeve (961) are N times of the inner diameter of the oil cylinder (931), and the N is the number of the adjusting telescopic rods (93) on the fixed wheel disc (91) or the movable wheel disc (92);
the outside of the fixed sleeve (941) is sleeved with a fixed shaft sleeve (942), and the fixed shaft sleeve (942) is fixedly connected with the frame; the outside of the movable sleeve (961) is sleeved with a movable shaft sleeve (962), the movable shaft sleeve (962) is connected with the frame through a synchronous oil cylinder (21), and the synchronous oil cylinder (21) and the adjusting oil cylinder (20) synchronously stretch out and draw back;
the frame (1) is provided with a driving component for driving the fixed piston (95) to move;
the fixed wheel disc (91) is fixedly sleeved on the fixed shaft (11), the fixed shaft (11) is connected with the synchronous rod (7) through the synchronous belt (8), and the synchronous rod (7) is coaxially and fixedly connected to the bottom of the workpiece clamping table (2); the movable wheel disc (92) is fixedly sleeved on the movable shaft (12), the movable shaft (12) is fixedly connected with a gear shaft of the driving gear pump (10), and an oil outlet end of the driving gear pump (10) is connected with an oil inlet of the hydraulic motor (6) for driving the hob (5) to rotate.
2. Gear piece hobbing system according to claim 1, characterized in that the drive assembly comprises a matched adjusting screw (18) and adjusting nut (19), the adjusting nut (19) being fixedly connected to a stationary piston (95), the adjusting screw (18) being coaxially arranged with the stationary piston (95).
3. The gear piece hobbing system as claimed in claim 2, wherein the adjusting nut (19) is fixedly connected with an extension rod (192), a limit clamping plate (191) is arranged on the extension rod (192), the limit clamping plate (191) is connected with the extension rod (192) through a pressing spring (193), and a clamping surface of the limit clamping plate (191) is a saw-tooth surface;
and limiting clamping grooves (194) matched with the limiting clamping plates (191) are respectively formed in the outer parts of the fixed sleeve (941) and the movable sleeve (961).
4. A gear piece hobbing system according to claim 3, characterized in that the distance between the serrations on the serration surface on the limit clamping plate (191) is equal to the pitch of the adjusting screw (18) and the serration position is offset from the thread position of the adjusting screw (18).
5. The gear-piece hobbing system according to claim 1 or 4, characterized in that the fixed piston (95) is located at one end inside the fixed sleeve (941) and the movable piston (97) is located at one end inside the movable sleeve (961) with vibration springs (98), respectively.
6. The gear piece hobbing system according to claim 5, characterized in that the end of the fixed shaft (11) is fixedly connected with a gear shaft of a pressure oil gear pump (31), an oil inlet end of the pressure oil gear pump (31) is communicated with a cooling liquid tank (3), an oil outlet end of the pressure oil gear pump (31) is communicated with a cooling liquid pipe (16), and an oil outlet end of the cooling liquid pipe (16) extends to above the workpiece clamping table (2).
7. The gear piece hobbing system as claimed in claim 6, wherein the frame (1) is provided with a vertical cylinder (41) for driving the tool rest (4) to move in a vertical direction and a horizontal cylinder (43) for driving the tool rest (4) to move in a horizontal direction, the tool rest (4) is slidably connected with the frame in the horizontal direction through a horizontal slider (44), and the tool rest (4) is slidably connected with the horizontal slider (44) in the vertical direction through a vertical slider (42).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022100087141 | 2022-01-06 | ||
| CN202210008714.1A CN114226870A (en) | 2022-01-06 | 2022-01-06 | Gear part hobbing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115464214A CN115464214A (en) | 2022-12-13 |
| CN115464214B true CN115464214B (en) | 2023-06-06 |
Family
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210008714.1A Withdrawn CN114226870A (en) | 2022-01-06 | 2022-01-06 | Gear part hobbing system |
| CN202211366168.5A Active CN115464214B (en) | 2022-01-06 | 2022-11-01 | Gear part hobbing system |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210008714.1A Withdrawn CN114226870A (en) | 2022-01-06 | 2022-01-06 | Gear part hobbing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN114226870A (en) |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB672018A (en) * | 1950-01-05 | 1952-05-14 | Brown David & Sons Ltd | Improvements in or relating to machines for hobbing the teeth of gear wheels |
| DE3304284A1 (en) * | 1982-02-17 | 1983-09-15 | Beschle, Egon, 7701 Volkertshausen | Milling machine and a method for the production of gearwheels or the like |
| CN201050585Y (en) * | 2007-04-05 | 2008-04-23 | 张惠东 | Virtual teeth number adjustable chain transmission device and automatic transmission applying same |
| CN101435493B (en) * | 2008-10-23 | 2013-05-15 | 金哲根 | Gear engaging drive stepless speed changer |
| CN201526653U (en) * | 2009-01-08 | 2010-07-14 | 陈兆平 | Retractable-piston rod type stepless transmission |
| CN102248226B (en) * | 2011-06-21 | 2013-01-23 | 南京高速齿轮制造有限公司 | Numerical-control combined gear milling and hobbing machine for machining large-modulus gear and application thereof |
| CN104595442B (en) * | 2015-02-03 | 2017-04-26 | 张宗涛 | CVT (Continuously Variable Transmission) |
| CN205918855U (en) * | 2016-06-14 | 2017-02-01 | 宣建民 | Stepless gearbox |
| CN107012661A (en) * | 2017-05-18 | 2017-08-04 | 珠海格力电器股份有限公司 | Belt gear and washing machine |
| CN108006177B (en) * | 2017-12-05 | 2019-12-13 | 陈学琴 | Planetary gear tracking engagement continuously variable transmission |
| CN209736782U (en) * | 2019-04-23 | 2019-12-06 | 盐城市同达机械科技有限公司 | Synchronous pulley processing equipment |
| CN110067839A (en) * | 2019-06-06 | 2019-07-30 | 姚登元 | A kind of diameter-changing wheel stepless transmission |
| CN212509422U (en) * | 2020-06-08 | 2021-02-09 | 吴江瑞诺机械设备加工有限公司 | Variable transmission ratio belt pulley mechanism of generator |
| CN113044743B (en) * | 2021-03-10 | 2022-06-17 | 内蒙古维维能源有限公司 | Winch and pedestrian safety power-off locking alarm method thereof |
| CN113263228A (en) * | 2021-06-07 | 2021-08-17 | 浙江陀曼精密机械有限公司 | Rolling-over multi-path composite machining device |
| CN113623373A (en) * | 2021-07-08 | 2021-11-09 | 薛玉明 | Noise-reduction type bidirectional output gearbox capable of achieving multi-gear variable speed adjustment |
| CN113415376A (en) * | 2021-08-06 | 2021-09-21 | 张卫 | Chain transmission |
| CN113751805A (en) * | 2021-08-23 | 2021-12-07 | 浙江安防职业技术学院 | Hydraulic gear hobbing machine with automatic pitch adjustment structure for gear machining |
-
2022
- 2022-01-06 CN CN202210008714.1A patent/CN114226870A/en not_active Withdrawn
- 2022-11-01 CN CN202211366168.5A patent/CN115464214B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN115464214A (en) | 2022-12-13 |
| CN114226870A (en) | 2022-03-25 |
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