CN104001991B - Gear-hobbing machine knife bar automatic tensioner - Google Patents
Gear-hobbing machine knife bar automatic tensioner Download PDFInfo
- Publication number
- CN104001991B CN104001991B CN201410264093.9A CN201410264093A CN104001991B CN 104001991 B CN104001991 B CN 104001991B CN 201410264093 A CN201410264093 A CN 201410264093A CN 104001991 B CN104001991 B CN 104001991B
- Authority
- CN
- China
- Prior art keywords
- knife bar
- pull bar
- bar
- main shaft
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Percussive Tools And Related Accessories (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention discloses a kind of gear-hobbing machine knife bar automatic tensioner, comprise main shaft, fixed main shaft tool holder casing, be arranged on main shaft one end knife bar, for tractive knife bar pull bar, be arranged on tractive connector between knife bar and pull bar and provide the retractor device of power source for pull bar, described tractive connector comprises the blind rivet be fixed on knife bar, is fixed on the transition blind rivet of pull bar one end and is sleeved on the many lobes pulling claw linked together on blind rivet and transition blind rivet and by both; Adopt mechanical device to provide pulling force, power is large and stable, enhances the connection rigidity between main shaft and knife bar, improves the gear hobbing precision of gear-hobbing machine; Automaticity is high, significantly reduces the labour intensity of workman, improves operating efficiency; Apparatus structure is simple, and reliability is high, easy to maintenance.
Description
Technical field
The invention belongs to be combined with gear cutting machine or be contained on gear cutting machine or be specially adapted for annex or the device field of gear cutting machine shaped portion, relating to a kind of gear-hobbing machine knife bar automatic tensioner.
Background technology
During large-sized numerical control manufacturing gear for hobbing machine, because processing modulus is large, the cutting force of knife bar main shaft also increases thereupon, gear hobbing precise decreasing, only improves the connection rigidity between gear-hobbing machine main shaft and knife bar, could Reliable guarantee gear hobbing precision.For reaching the object of the connection rigidity strengthening knife bar and main shaft, the requirement that the step surface that need meet knife bar contacts with taper hole with the left side of main shaft with the conical surface simultaneously, this just need knife bar to put into main shaft orientation good after while again to knife bar axial tension, make the conical surface of knife bar produce certain deflection, ensure that the left side of the knife bar conical surface and step surface main shaft contacts with taper hole simultaneously.
The tension of existing knife bar mainly adopts manually tension, and due to pull bar longer, tension and adjustment are wasted time and energy all very much.And because manual tightening force is less, the knife bar conical surface and step surface cannot be made to contact with taper hole with the left side of main shaft, be taper-face contact usually simultaneously, cause the contact stiffness of knife bar not enough, gear hobbing precise decreasing.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of contact stiffness improved between knife bar and main shaft, easy to operate, to reduce labour intensity gear-hobbing machine knife bar automatic tensioner.
For achieving the above object, the invention provides following technical scheme: a kind of gear-hobbing machine knife bar automatic tensioner, comprise main shaft, fixed main shaft tool holder casing, be arranged on main shaft one end knife bar, for tractive knife bar pull bar, be arranged on tractive connector between knife bar and pull bar and provide the retractor device of power source for pull bar, described tractive connector comprises the blind rivet be fixed on knife bar, is fixed on the transition blind rivet of pull bar one end and is sleeved on the many lobes pulling claw linked together on blind rivet and transition blind rivet and by both.
Further, described retractor device comprises cylinder body, piston, piston rod, resetting means I and resetting means II, described resetting means I comprises setting limiting plate on the piston rod and Telescopic spring, described resetting means II comprises and is arranged on limiting gasket on pull bar and mobile packing ring, is provided with spring between described limiting gasket and mobile packing ring.
Further, described retractor device is electric pushrod or stepper motor, and the output shaft on described electric pushrod or stepper motor and pull bar fix.
Further, the described pull bar other end is provided with special bearing, described special bearing comprises inner ring, outer ring and ball, described inner ring is provided with guide groove, described outer ring is provided with embedding taper hole, described ball correspondence is inlaid in guide groove and embeds between taper hole, and described inner ring is fixed on pull bar, and described outer ring is fixed on main shaft; Described inner ring is also provided with little bar, described little bar is provided with top briquetting.
Further, the position detector for detecting retractor device stroke is also comprised.
Beneficial effect of the present invention is: can directly improve existing apparatus, and without the need to again making the parts such as new main shaft again, special equipment is less, and the process-cycle is short, reduces improving cost; Adopt mechanical device to provide pulling force, power is large and stable, enhances the connection rigidity between main shaft and knife bar, improves the gear hobbing precision of gear-hobbing machine; Only set the stroke of retractor device when first more changing knife rod and tension, without the need to again carrying out artificial tension and regulating, automaticity is high, significantly reduces the labour intensity of workman, shortens the time of more changing knife rod, improves operating efficiency; Apparatus structure is simple, and reliability is high, easy to maintenance.
Accompanying drawing explanation
In order to make object of the present invention, technical scheme and beneficial effect clearly, the invention provides following accompanying drawing and being described:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A portion enlarged drawing of Fig. 1;
Fig. 3 is the B portion enlarged drawing of Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
As shown in the figure, gear-hobbing machine knife bar automatic tensioner described in the present embodiment, comprise main shaft 1, the tool holder casing 2 of fixed main shaft 1, be arranged on the knife bar 3 of main shaft 1 one end, for the pull bar 4 of tractive knife bar 3, be arranged on tractive connector between knife bar 3 and pull bar 4 and provide the retractor device of power source for pull bar 4, described tractive connector comprises the blind rivet 5 be fixed on knife bar 3, be fixed on the transition blind rivet 6 of pull bar 4 one end and be sleeved on blind rivet 5 and transition blind rivet 6 and many lobes pulling claw 7 that both are linked together, the right position of pull bar 4 is controlled by retractor device, pull bar 4 changes the folding condition of many lobes pulling claw 7, realize the release to knife bar 3 and tension.
In the present embodiment, described retractor device comprises cylinder body 8, piston 9, piston rod 10, resetting means I and resetting means II, described resetting means I comprises and is arranged on limiting plate 11 on piston rod 10 and Telescopic spring 12, described resetting means II comprises and is arranged on limiting gasket 13 on pull bar 4 and mobile packing ring 14, is provided with spring 15 between described limiting gasket 13 and mobile packing ring 14; Main shaft 1 is provided with step surface herein, prevent limiting gasket 13 from moving, pull bar 4 is provided with step surface, prevent from departing from pull bar 4, piston 9 is separated setting with pull bar 4, in cylinder body 8 in Oil feeding process, piston 9 pushes up pressure pull bar 4, the piston rod 10 of movement compresses Telescopic spring 12 and spring 15, and Telescopic spring 12 provides reset force for piston 9 reseting procedure, and spring 15 provides reset force for pull bar 4 resets.
As the variant of above-described embodiment, described retractor device also can adopt electric pushrod or stepper motor etc. can reach other devices of push-and-pull pull bar 4 object, now without the need to arranging return spring, directly the output shaft on electric pushrod or stepper motor and pull bar 4 are fixed, control draw rod positions by the output shaft stroke controlled on electric pushrod or stepper motor.
In the present embodiment, described pull bar 4 other end (on the right side of mobile packing ring 14) is provided with special bearing, described special bearing comprises inner ring 16, outer ring 17 and ball 18, described inner ring 16 is provided with guide groove, described outer ring 17 is provided with embedding taper hole, described ball 18 correspondence is inlaid in guide groove and embeds between taper hole, and described inner ring 16 is fixed on pull bar 4, and described outer ring 17 is fixed on main shaft 1; Can tie-strut 4, strengthen its stability, again can spacing mobile packing ring 14, meet the object that pull bar 4 is movable in main shaft 1.
In the present embodiment, inner ring 16 is also provided with little bar 19, described little bar 19 is provided with top briquetting 20, the piston 9 be convenient on retractor device pushes up pressure pull bar 4.
In the present embodiment, also comprising the position detector 21 for detecting retractor device stroke, realizing Automatic Detection and Control.
Concrete course of action is as follows:
Automatically unclamp: oil-feed on the right side of cylinder body 8, piston rod 10 promotes piston 9 and moves to left, piston 9 pushes down top briquetting 20, little bar 19 promotes the inner ring 16 of special bearing and pull bar 4 is moved to the left and Compress Spring 15, transition blind rivet 6 is made to drive many lobes pulling claw 7 to open, release blind rivet 5, takes out knife bar 3, replaceable knife bar 3 and hobboing cutter; Now position detector 21 can send the signal that puts in place, shows that knife bar 3 unclamps.
Automatic tension: after the knife bar 3 after replacing is loaded main shaft 1, oil-feed is stopped on the right side of cylinder body 8, piston rod 10 moves right under the effect of Telescopic spring 12,4, pull bar entirety under the effect of spring 15 moves right, the blind rivet 5 that many lobes pulling claw 7 is held on knife bar 3 tightens up and moves right, knife bar 3 is contacted with taper hole with the left side of main shaft 1 simultaneously, strengthens rigidity; Now position detector 21 puts in place signal, shows that knife bar 3 is strained.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (4)
1. a gear-hobbing machine knife bar automatic tensioner, it is characterized in that: comprise main shaft, fixed main shaft tool holder casing, be arranged on main shaft one end knife bar, for tractive knife bar pull bar, be arranged on tractive connector between knife bar and pull bar and provide the retractor device of power source for pull bar, described tractive connector comprises the blind rivet be fixed on knife bar, is fixed on the transition blind rivet of pull bar one end and is sleeved on the many lobes pulling claw linked together on blind rivet and transition blind rivet and by both; The described pull bar other end is provided with special bearing, described special bearing comprises inner ring, outer ring and ball, described inner ring is provided with guide groove, described outer ring is provided with embedding taper hole, described ball correspondence is inlaid in guide groove and embeds between taper hole, described inner ring is fixed on pull bar, and described outer ring is fixed on main shaft; Described inner ring is also provided with little bar, described little bar is provided with top briquetting.
2. gear-hobbing machine knife bar automatic tensioner according to claim 1, it is characterized in that: described retractor device comprises cylinder body, piston, piston rod, resetting means I and resetting means II, described resetting means I comprises setting limiting plate on the piston rod and Telescopic spring, described resetting means II comprises and is arranged on limiting gasket on pull bar and mobile packing ring, is provided with spring between described limiting gasket and mobile packing ring.
3. gear-hobbing machine knife bar automatic tensioner according to claim 1, is characterized in that: described retractor device is electric pushrod or stepper motor, and the output shaft on described electric pushrod or stepper motor and pull bar fix.
4. the gear-hobbing machine knife bar automatic tensioner according to any one of claim 1-3, is characterized in that: also comprise the position detector for detecting retractor device stroke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410264093.9A CN104001991B (en) | 2014-06-13 | 2014-06-13 | Gear-hobbing machine knife bar automatic tensioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410264093.9A CN104001991B (en) | 2014-06-13 | 2014-06-13 | Gear-hobbing machine knife bar automatic tensioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104001991A CN104001991A (en) | 2014-08-27 |
| CN104001991B true CN104001991B (en) | 2016-01-27 |
Family
ID=51363055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410264093.9A Active CN104001991B (en) | 2014-06-13 | 2014-06-13 | Gear-hobbing machine knife bar automatic tensioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104001991B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439556B (en) * | 2014-12-29 | 2016-08-03 | 威海华东重工有限公司 | Heavy accurate digital control gear-hobbing machine hob head |
| CN107052832B (en) * | 2017-04-12 | 2023-05-30 | 宁波海天精工股份有限公司 | Tool apron tensioning mechanism for vertical lathe |
| CN108188495B (en) * | 2017-11-24 | 2019-07-12 | 江阴市永兴机械制造有限公司 | A kind of gear-hobbing machine knife bar automatic tensioner |
| CN112459135A (en) * | 2018-10-26 | 2021-03-09 | 吕强强 | Foundation bearing capacity detection equipment and method for road construction |
| CN114986730B (en) * | 2022-06-30 | 2024-06-18 | 青岛高测科技股份有限公司 | Automatic tensioning device for cutting roller of crystal silicon slicing machine, assembling method and slicing machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0516596A1 (en) * | 1991-05-31 | 1992-12-02 | MIKRON S.p.A. BOLOGNA | A gear hobbing machine with an arborless system of supporting the hob |
| CN102059408A (en) * | 2010-12-21 | 2011-05-18 | 齐重数控装备股份有限公司 | Main shaft device for numerical controlled gear hobbing machine |
| CN202367507U (en) * | 2011-12-29 | 2012-08-08 | 重庆机床(集团)有限责任公司 | High-rigidity connecting structure of spindle and knife handle |
| CN202726072U (en) * | 2012-08-26 | 2013-02-13 | 浙江陀曼精密机械有限公司 | Hob spindle mechanism for numerically-controlled gear hobbing machine |
| CN203636127U (en) * | 2014-01-02 | 2014-06-11 | 重庆机床(集团)有限责任公司 | Motorized spindle direct-driven hob rest |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002011616A (en) * | 2000-06-26 | 2002-01-15 | Komatsu Ltd | Gear cutting tool and gear cutting method |
-
2014
- 2014-06-13 CN CN201410264093.9A patent/CN104001991B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0516596A1 (en) * | 1991-05-31 | 1992-12-02 | MIKRON S.p.A. BOLOGNA | A gear hobbing machine with an arborless system of supporting the hob |
| CN102059408A (en) * | 2010-12-21 | 2011-05-18 | 齐重数控装备股份有限公司 | Main shaft device for numerical controlled gear hobbing machine |
| CN202367507U (en) * | 2011-12-29 | 2012-08-08 | 重庆机床(集团)有限责任公司 | High-rigidity connecting structure of spindle and knife handle |
| CN202726072U (en) * | 2012-08-26 | 2013-02-13 | 浙江陀曼精密机械有限公司 | Hob spindle mechanism for numerically-controlled gear hobbing machine |
| CN203636127U (en) * | 2014-01-02 | 2014-06-11 | 重庆机床(集团)有限责任公司 | Motorized spindle direct-driven hob rest |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104001991A (en) | 2014-08-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104001991B (en) | Gear-hobbing machine knife bar automatic tensioner | |
| CN103737124B (en) | Electric spindle direct-drive hobbing cutter rest | |
| CN204278013U (en) | For the switching mechanism of five axis robot | |
| CN203586964U (en) | Full-automatic fireworks barrel paper piece plug mechanism | |
| KR101291620B1 (en) | Automatic nut supply apparatus of tapping machine | |
| CN210926589U (en) | Wire harness stripping device | |
| CN205600003U (en) | Rod shear blanking mould | |
| CN103358155B (en) | For the workpiece automatic clamping device of rotary table | |
| CN105014348A (en) | Spring arm assembling tool and using method thereof | |
| CN201645575U (en) | Head saw raising automatic adjusting mechanism of computer penal saw | |
| CN104209442A (en) | Automatic riveting machine | |
| CN203582399U (en) | Lifting mechanism provided with automatic limiting device | |
| CN202435795U (en) | Head base mechanism of inserter | |
| CN210550858U (en) | Sealing washer equipment | |
| CN202123253U (en) | Rear feeding mechanism for automatic lathe | |
| CN205165530U (en) | Die clamper with adjustable vertical pulling | |
| CN209288137U (en) | A kind of automatic feeding of stamping parts of automobile stamping equipment | |
| CN204381168U (en) | Al alloy parts punching automatic feeding | |
| CN208866815U (en) | Air compressor piston connecting rod boring processing tool | |
| CN103846385A (en) | Pneumatic control rivet feeding mechanism for automatic rivet feeding riveting machine | |
| CN204817627U (en) | Arc picture frame production facility | |
| CN202079288U (en) | Lathe knife-frame table | |
| CN204735999U (en) | Automatic sword device that unloads of radial drill main shaft | |
| CN205817256U (en) | One assembles nut apparatus automatically | |
| CN204639636U (en) | A kind of forced locking device of cylinder sleeve bore auxiliary clamp mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |