CN104726680A - Bearing rolling needle and rolling column quenching machine tool - Google Patents
Bearing rolling needle and rolling column quenching machine tool Download PDFInfo
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- CN104726680A CN104726680A CN201310719062.3A CN201310719062A CN104726680A CN 104726680 A CN104726680 A CN 104726680A CN 201310719062 A CN201310719062 A CN 201310719062A CN 104726680 A CN104726680 A CN 104726680A
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Abstract
The invention discloses a bearing rolling needle and rolling column quenching machine tool. The bearing rolling needle and rolling column quenching machine tool comprises a loading mechanism, a quenching mechanism, at least one heating inductor, a photoelectric detection mechanism, a quenching water tank discharging system, a heating and loading system and a machine tool motor numerical control system, wherein the loading mechanism comprises a bed body frame and a vibration loading and guide mechanism arranged on the bed body frame, the quenching mechanism comprises a base, a retreating and blanking mechanism arranged on the base, a workpiece positioning and rotation driving mechanism arranged on the base and a front-and-back loading sliding plate mechanism arranged above the retreating and blanking mechanism, and the vibration loading and guide mechanism is connected with the front-and-back loading sliding plate mechanism through a guide pipe; the heating inductor is arranged on the workpiece positioning and rotation driving mechanism; the photoelectric detection mechanism is arranged above the front-and-back loading sliding plate mechanism, and the photoelectric detection mechanism is responsible for detecting the existence and absence of a workpiece and the height position of the workpiece; and the quenching water tank discharging system, the heating and loading system and the machine tool motor numerical control system are arranged on the base and positioned below the heating inductor. The bearing rolling needle and rolling column quenching machine tool disclosed by the invention can automatically realize loading, unloading, heating and cooling and has no need of artificial participation.
Description
Technical field
The present invention relates to a kind of bearing needle, roller quenching machine, in particular to a kind of induction heating, once one to three bearing needle, roller are heated simultaneously, cooling fast simultaneously, the energy-efficient automatic quenching machine tool of the processing of ensureing to carry out quenching to bearing needle/roller specified location.
Background technology
Quenching machine, as the term suggests refer generally to use induction heating power to carry out the machine tool of quenching technology; Have that precision is high, good reliability, the advantage such as time saving and energy saving; Primarily of compositions such as lathe bed, slide unit, clamping and rotating system, cooling system, the hardening liquid recycle system, electric control systems; Quenching machine is all generally single station (can adopt double quenching machine during small diameter workpiece); Quenching machine has vertical and horizontal two large classes from structure, and user can, according to quenching technology selective quenching lathe, for peculiar part or special process, can require to manufacture and design special quenching machine according to heating process.
It is controlled that high frequency electromagnetic induction heating quenching technology has concentration of energy, and capacity usage ratio is high, pollution-free, is convenient to the advantages such as automatic production, is applied to various industry more and more, especially the industry such as automobile, bearing, lathe, standardized component; But the bearing needle at present in standardized component, roller thermal treatment great majority still heat at the old-fashioned electric stove integral of employing the quenching technology cooled again, and for the part requiring bearing needle, roller (locally) quenches, the quenching technology of overall heating obviously can not use.And bearing needle, post produce in enormous quantities, single piece work time requirement is about 3 seconds.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of induction heating, disposable to the heating of one to three workpiece appointed part, fast cooling, ensures a kind of bearing needle, the roller quenching machine of working (machining) efficiency.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of bearing needle, roller quenching machine, comprise feed mechanism and quenching mechanism; Described feed mechanism comprises
One frame, described frame is made up of steel frame welding;
At least one is arranged on the vibrations material loading material guide mechanism on frame, and described vibrations material loading material guide mechanism comprises vibrations feed mechanism bucket, and described vibrations feed mechanism bucket is responsible for carrying out auto arrangement to workpiece;
Described quenching mechanism comprises
One base;
One is arranged on the retrogressing blanking mechanism on base, and described retrogressing blanking mechanism is used for Workpiece fixing and rotary drive mechanism to exit work pieces process region fast;
One is arranged on Workpiece fixing on base and rotary drive mechanism, is responsible for positioning and angular turn workpiece;
One is arranged on the front and back material loading sled mechanism retreated above blanking mechanism, and described front and back material loading sled mechanism is connected with base by back up pad; Described front and back material loading sled mechanism comprises mounting plate, the slide block arranged on the guide rail of front and back material loading slide plate on a mounting board, wear-resistant block, setting guide rail on a mounting board, setting, be arranged on splicing plate on the material loading slide plate of front and back and cylinder; Described vibrations material loading material guide mechanism is connected by material guiding pipe with front and back material loading sled mechanism;
At least one heating inductor, described heating inductor is arranged on Workpiece fixing and rotary drive mechanism;
One photoelectric detection mechanism, described photoelectric detection mechanism is arranged on the top of front and back material loading sled mechanism, and described photoelectric detection mechanism is responsible for detecting the presence or absence of workpiece and high and low position;
One to be arranged on base and the quenching water tank discharge system be positioned at below heating inductor, and described quenching water tank discharge system comprises water tank, arrange scraper-type drag chain type transfer roller in water tank and drive-motor;
One heating load system;
One machine motor digital control system.
In one embodiment of the invention, described material guiding pipe is transparent hose.
In one embodiment of the invention, described heating load system comprises induction hardening transformer, quenching power supply and building-out capacitor.
In one embodiment of the invention, described retrogressing blanking mechanism by the rotary seat be arranged on base, the guide rail be arranged on rotary seat, be arranged on the slide block on guide rail and the cylinder that is connected with rotary seat forms.
In one embodiment of the invention, described Workpiece fixing and rotary drive mechanism are made up of locking cap, transition magnetic head, magnet bars, bearing, Timing Belt, synchronizing wheel, turning axle and reducing motor; Reducing motor is connected with the synchronizing wheel of Timing Belt with turning axle bottom by synchronizing wheel, turning axle is arranged on rotary seat by bearing, one counterbore is arranged at turning axle top, described magnet bars is arranged in counterbore, described transition magnetic head is arranged on magnet bars top, and transition magnetic head is pressed on turning axle top by locking cap.
In one embodiment of the invention, described photoelectric detection mechanism forms by detecting feeler lever, shield cap, laser sensor, clamp, spring, riser, cylinder and snubber; Described detection feeler lever is connected with cylinder by clamp, and described cylinder, snubber, shield cap, detection feeler lever are arranged on riser, and described laser sensor is arranged in shield cap, and described detection feeler lever is connected with cylinder by clamp.
In one embodiment of the invention, described reducing motor is by transducer drive.
By technique scheme, the invention has the beneficial effects as follows:
The present invention can select the lathe with different configuration according to specification of workpieces and output demand, and it can process multiple workpiece simultaneously, and working (machining) efficiency is high, and cost is low.
The present invention can carry out material loading, heating, cooling, blanking action automatically, without the need to artificial participation.
The present invention adopts machine motor digital control system, and it can store multiple quenching complete processing program, can meet the different process requirements of workpiece.
Workpiece fixing of the present invention and rotary drive mechanism utilize the adsorption of magnetic force to rotate to drive workpiece, at the uniform velocity rotation when workpiece heat, cooling, rotating speed can stepless changing, ensure that radial quench-hardened case is consistent, simultaneously magnetic-adsorption can not disfiguring workpiece and can not block Working position, and magnetic force acts on all the time on workpiece and can not get loose, therefore workpiece can be ensured all the time in rotation.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is rear view of the present invention;
Fig. 2 is side-view of the present invention;
Fig. 3 is the part-structure figure of quenching mechanism of the present invention;
Fig. 4 is the part-structure side-view of quenching mechanism of the present invention.
Numeral and the corresponding component title represented by letter in figure:
100, frame 200, vibrations material loading material guide mechanism 210, vibrations feeder hopper 220, material guiding pipe 300, base 400, retreat blanking mechanism 410, rotary seat 420, guide rail 430, slide block 440, cylinder 500, Workpiece fixing and rotary drive mechanism 510, locking cap 520, transition magnetic head 530, magnet bars 540, bearing 550, Timing Belt 560, synchronizing wheel 570, turning axle 580, reducing motor 600, front and back material loading sled mechanism 610, back up pad 620, mounting plate 630, front and back material loading slide plate 640, wear-resistant block 650, guide rail 660, slide block 670, splicing plate 680, cylinder 690, feedhole 700, heating inductor 800, photoelectric detection mechanism 810, detect feeler lever 820, cylinder 830, snubber 840, laser sensor 850, riser 860, clamp 870, stage clip 880, shield cap 900, quenching water tank discharge system 910, water tank 920, scraper-type drag chain type transfer roller 930, drive-motor 1000, heating load system 1100, machine motor digital control system.
Embodiment
The technique means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
See shown in Fig. 1 to Fig. 4, the invention discloses a kind of bearing needle, roller quenching machine, comprise feed mechanism and quenching mechanism, feed mechanism is responsible for carrying out hardening step by needing the workpiece of processing to flow to quenching mechanism.
Feed mechanism of the present invention comprises frame 100, and frame is made up of steel frame welding, and frame is step-like; Be provided with at least one at the top of step and establish vibrations material loading material guide mechanism 200, be preferably 3 in the present invention, it also arranges more certainly; Vibrations material loading material guide mechanism 200 comprises vibrations feed mechanism bucket 210, it is identical with vibrations material loading material guide mechanism of the prior art, belong to standard purchase price part, during work, workpiece is unordered to be in batch placed in vibrations feeder hopper, auto arrangement a team can be become by the running of vibrations feeder, the exit end of vibrations material loading material guide mechanism connects material guiding pipe 220, this material guiding pipe is transparent hose, workpiece is become to output to along material guiding pipe after a team opening for feed place of front and back material loading sled mechanism by auto arrangement, and transparent material guiding pipe is so that observe the traffic condition of workpiece in material guiding pipe; Treating that material loading workpiece is just stored in material guiding pipe is front and back material loading sled mechanism feed supplement at any time.
Quenching mechanism of the present invention comprises base 300, the retrogressing blanking mechanism 400 be arranged on base, be arranged on Workpiece fixing on base and rotary drive mechanism 500, be arranged on and retreat front and back material loading sled mechanism 600, at least one heating inductor 700, photoelectric detection mechanism 800 above blanking mechanism, be arranged on base and be positioned at quenching water tank discharge system 900, heating load system 1000 and the machine motor digital control system 1100 below heating inductor.
The present invention retreat blanking mechanism 400 by the rotary seat 410 be arranged on base, the guide rail 420 be arranged on rotary seat, be arranged on the slide block 430 on guide rail and the cylinder 440 that is connected with rotary seat forms; During work, cylinder 440 is with movable slider 430 to run along guide rail 420, and Workpiece fixing and rotary drive mechanism 500 exit by slide block 430 fast, and heated parts drops out heating inductor 700 immediately and falls into quenching water tank discharge system 900 and carry out Cooling Quenching.
Workpiece fixing of the present invention and rotary drive mechanism 500 are arranged on rotary seat 410, and Workpiece fixing and rotary drive mechanism 500 are made up of locking cap 510, transition magnetic head 520, magnet bars 530, bearing 540, Timing Belt 550, synchronizing wheel 560, turning axle 570 and reducing motor 580; Reducing motor 580 is connected with the synchronizing wheel of Timing Belt 550 with turning axle bottom by synchronizing wheel 560, turning axle 570 is arranged on rotary seat 410 by bearing 540, turning axle 570 top is provided with a counterbore, described magnet bars is arranged in counterbore, magnet bars top is that transition magnetic head is pressed on turning axle top by locking cap by transition magnetic head, locking cap is exposed as Workpiece fixing face in transition magnetic head top, power mutually to be connected by synchronizing wheel, Timing Belt by reducing motor and is delivered on each turning axle, realizes synchronous rotary; Workpiece needs to be at the uniform velocity to rotate in heat-processed, ensure that the radial quench-hardened case of working position is consistent, what Workpiece fixing and rotary drive mechanism drove the rotation of workpiece to adopt is the absorption of leaning on magnet bars 530 magnetic force, namely simplify the structure and drive reliable, rotary actuation adopts reducing motor to drive, by toothed belt transmission to each heating location, each workpiece synchronous rotary; Its motor is by transducer drive, and rotating speed can stepless changing at any time.
Before and after the present invention, material loading sled mechanism 600 is connected with base by back up pad 610; Before and after material loading sled mechanism comprise mounting plate 620, front and back material loading slide plate 630 be on a mounting board set, wear-resistant block 640, the slide block 660 arranged on guide rail 650 on a mounting board, the guide rail that arranges, be arranged on splicing plate 670 on the material loading slide plate of front and back and cylinder 680; Vibrations material loading material guide mechanism 200 is connected by material guiding pipe 220 with front and back material loading sled mechanism 600; During work, front and back material loading slide plate 630 can move forward and backward under the drive of cylinder along the guide rail 650 on mounting plate 620, and after cylinders retract, terminal is material loading position, and it is blanking position that cylinder stretches out front terminal; Material loading slide plate workpiece when rear terminal in front and back falls in the feedhole 690 on front and back material loading slide plate 630 automatically, move forward under the drive of cylinder, subsequent workpiece is blocked not allow and is fallen by moving process middle slide plate, simultaneously material loading workpiece is delivered to heating inductor feeding port, and automatically fall into heating inductor bottoming hole, rest on the locating surface of location and rotary drive mechanism, slide plate will back to material loading position.
Heating inductor 700 of the present invention is arranged on Workpiece fixing and rotary drive mechanism, and the number of heating inductor of the present invention is preferably three, and it also can arrange more certainly; Heating inductor is manufactured by the requirement size design at workpiece heat position, can quick position and installation; Heated parts quantity is identical with feeding station, adopts series system; Heating start and stop are controlled by high frequency electric source.
Photoelectric detection mechanism 800 of the present invention is arranged on the top of front and back material loading sled mechanism, photoelectric detection mechanism is by detecting feeler lever 810, cylinder 820 and snubber 830, laser sensor 840, riser 850, clamp 860, stage clip 870, shield cap 880 forms, cylinder 820, snubber 830, shield cap 880, detecting feeler lever 810 is arranged on riser 850, laser sensor 840 is arranged in shield cap 880, detect feeler lever 810 to be connected with cylinder 820 by clamp 860, operationally, after on the locating surface that workpiece rests on location and rotary drive mechanism, cylinder 820 promotes stage clip 870 by clamp 860 and drives detection feeler lever 810 to move downward, after the deceleration of snubber 830, detect feeler lever 810 and plane contact on workpiece, laser sensor 840 detects the upper plane detecting feeler lever 810, the presence or absence of indirect detection workpiece and high and low position whether correct, and then judge the quality of workpiece heat, laser sensor is hidden in shield cap simultaneously, avoids interference and the pollution of outside oil smoke steam.
This quenching water tank discharge system 900 comprises water tank 910, arrange scraper-type drag chain type transfer roller 920 in water tank and drive-motor 930; Quench water in water tank ceaselessly stirs to improve quenching quality fast, workpiece after quenching falls on scraper-type drag chain type transfer roller through material-gathering device (not marking in figure), via scraper-type drag chain type conveyor belts water tank, its drive-motor is by transducer drive, and rotating speed can stepless changing at any time.
Heating load system 100 of the present invention comprises induction hardening transformer, quenching power supply and building-out capacitor (not shown in FIG.), itself and heating inductor, high frequency electric source resonance, to workpiece formation induced current, magnetic field, and heated parts.
Machine motor digital control system 1100 of the present invention can store multiple quenching complete processing program, input workpiece model, and system recalls corresponding program automatically, presses start button, and lathe can be processed automatically; Machine motor digital control system is with the whole complete processing correlation parameter of curve mode record, and in order to recourse and inquiry, the work-piece cools time can regulate automatically according to territory, workpiece effective heating area.
Principle of work of the present invention is as follows:
During work, manually by the workpiece in batch unordered vibrations feeder hopper 210 being placed on vibrations material loading material guide mechanism 200, select the work program corresponding to workpiece, start lathe, location and rotary drive mechanism 500 start to rotate; Vibrations material loading material guide mechanism 200 works, and workpiece auto arrangement in vibrations feeder hopper 210 becomes a team, and outputs in the feedhole 690 in front and back material loading sled mechanism 600 along material guiding pipe 220; Before and after the action of material loading sled mechanism 600, workpiece is delivered to heating inductor 700 feeding port, and automatically falls into heating inductor bottoming hole, rest on the locating surface of location and rotary drive mechanism, slide plate back to material loading position, from new material loading; Photoelectric detection mechanism 800 starts, and whether the presence or absence and the high and low position that detect workpiece be correct; High frequency electric source starts, and heating inductor stops heating after being heated to design temperature by the startup of setting technique heating schedule; Retreat blanking mechanism 400 action to be driven by cylinder and Workpiece fixing and rotary drive mechanism are exited fast along guide rail, heated parts drops out heating inductor immediately, and falls into quenching water tank discharge system and carry out Cooling Quenching; Now, retreat blanking mechanism action by Workpiece fixing and rotary drive mechanism Quick-return original position, wait for that supplied materials holds each workpiece; Workpiece after quenching falls on scraper-type drag chain type transfer roller through material-gathering device, flattens and falls in discharge bucket, complete machine circulation automatic operation via scraper-type drag chain type conveyor belts water tank.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (7)
1. bearing needle, a roller quenching machine, comprise feed mechanism and quenching mechanism; It is characterized in that: described feed mechanism comprises
One frame, described frame is made up of steel frame welding;
At least one is arranged on the vibrations material loading material guide mechanism on frame, and described vibrations material loading material guide mechanism comprises vibrations feed mechanism bucket, and described vibrations feed mechanism bucket is responsible for carrying out auto arrangement to workpiece;
Described quenching mechanism comprises
One base;
One is arranged on the retrogressing blanking mechanism on base, and described retrogressing blanking mechanism is used for Workpiece fixing and rotary drive mechanism to exit work pieces process region fast;
One is arranged on Workpiece fixing on base and rotary drive mechanism, is responsible for positioning and angular turn workpiece;
One is arranged on the front and back material loading sled mechanism retreated above blanking mechanism, and described front and back material loading sled mechanism is connected with base by back up pad; Described front and back material loading sled mechanism comprises mounting plate, the slide block arranged on the guide rail of front and back material loading slide plate on a mounting board, wear-resistant block, setting guide rail on a mounting board, setting, be arranged on splicing plate on the material loading slide plate of front and back and cylinder; Described vibrations material loading material guide mechanism is connected by material guiding pipe with front and back material loading sled mechanism; One end of described front and back material loading slide plate is provided with feedhole;
At least one heating inductor, described heating inductor is arranged on Workpiece fixing and rotary drive mechanism;
One photoelectric detection mechanism, described photoelectric detection mechanism is arranged on the top of front and back material loading sled mechanism, and described photoelectric detection mechanism is responsible for detecting the presence or absence of workpiece and high and low position;
One to be arranged on base and the quenching water tank discharge system be positioned at below heating inductor, and described quenching water tank discharge system comprises water tank, arrange scraper-type drag chain type transfer roller in water tank and drive-motor;
One heating load system;
One machine motor digital control system.
2. a kind of bearing needle according to claim 1, roller quenching machine, is characterized in that: described material guiding pipe is transparent hose.
3. a kind of bearing needle according to claim 1, roller quenching machine, is characterized in that: described heating load system comprises induction hardening transformer, quenching power supply and building-out capacitor.
4. a kind of bearing needle according to claim 1, roller quenching machine, is characterized in that: described retrogressing blanking mechanism by the rotary seat be arranged on base, the guide rail be arranged on rotary seat, be arranged on the slide block on guide rail and the cylinder that is connected with rotary seat forms.
5. a kind of bearing needle according to claim 1, roller quenching machine, is characterized in that: described Workpiece fixing and rotary drive mechanism are made up of locking cap, transition magnetic head, magnet bars, bearing, Timing Belt, synchronizing wheel, turning axle and reducing motor; Reducing motor is connected with the synchronizing wheel of Timing Belt with turning axle bottom by synchronizing wheel, turning axle is arranged on rotary seat by bearing, turning axle top is provided with a counterbore, described magnet bars is arranged in counterbore, described transition magnetic head is arranged on magnet bars top, and transition magnetic head is pressed on turning axle top by locking cap.
6. a kind of bearing needle according to claim 1, roller quenching machine, it is characterized in that: described photoelectric detection mechanism forms by detecting feeler lever, shield cap, laser sensor, clamp, spring, riser, cylinder and snubber, described detection feeler lever is connected with cylinder by clamp, described cylinder, snubber, shield cap, detection feeler lever are arranged on riser, described laser sensor is arranged in shield cap, and described detection feeler lever is connected with cylinder by clamp.
7. a kind of bearing needle according to claim 1, roller quenching machine, is characterized in that: described reducing motor is by transducer drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310719062.3A CN104726680B (en) | 2013-12-23 | 2013-12-23 | A kind of bearing needle, roller quenching machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310719062.3A CN104726680B (en) | 2013-12-23 | 2013-12-23 | A kind of bearing needle, roller quenching machine |
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| CN104726680A true CN104726680A (en) | 2015-06-24 |
| CN104726680B CN104726680B (en) | 2017-06-23 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105018709A (en) * | 2015-07-04 | 2015-11-04 | 安徽旭鸿热处理有限公司 | Automatic quenching production line for annular parts |
| CN105018710A (en) * | 2015-07-04 | 2015-11-04 | 安徽旭鸿热处理有限公司 | Automatic feeding device for automatic quenching production lines of annular parts |
| CN105018684A (en) * | 2015-08-06 | 2015-11-04 | 江苏南方轴承股份有限公司 | High-frequency induction heating and spray quenching device and method thereof |
| CN106319162A (en) * | 2015-06-30 | 2017-01-11 | 上海恒精感应科技股份有限公司 | Copper plate overlaying type precision quenching inductor for small-size pin roller |
| CN106929654A (en) * | 2017-03-23 | 2017-07-07 | 湖北博士隆科技股份有限公司 | Iron rivet high produces dedicated full-automatic local heat treatmet device |
| CN107127240A (en) * | 2017-07-13 | 2017-09-05 | 乐清市易捷通电子有限公司 | A kind of production line |
| CN108531704A (en) * | 2018-06-22 | 2018-09-14 | 安徽绩溪徽山链传动有限公司 | A kind of axis pin process for quenching |
| CN114737031A (en) * | 2022-05-24 | 2022-07-12 | 安徽明雁齿轮有限公司 | Automatic high-frequency quenching device for thin-wall short bushing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105018710A (en) * | 2015-07-04 | 2015-11-04 | 安徽旭鸿热处理有限公司 | Automatic feeding device for automatic quenching production lines of annular parts |
| CN105018684A (en) * | 2015-08-06 | 2015-11-04 | 江苏南方轴承股份有限公司 | High-frequency induction heating and spray quenching device and method thereof |
| CN106929654A (en) * | 2017-03-23 | 2017-07-07 | 湖北博士隆科技股份有限公司 | Iron rivet high produces dedicated full-automatic local heat treatmet device |
| CN106929654B (en) * | 2017-03-23 | 2019-02-12 | 湖北博士隆科技股份有限公司 | High iron rivet produces dedicated full-automatic local heat treatmet device |
| CN107127240A (en) * | 2017-07-13 | 2017-09-05 | 乐清市易捷通电子有限公司 | A kind of production line |
| CN108531704A (en) * | 2018-06-22 | 2018-09-14 | 安徽绩溪徽山链传动有限公司 | A kind of axis pin process for quenching |
| CN108531704B (en) * | 2018-06-22 | 2023-07-25 | 安徽绩溪徽山链传动有限公司 | Pin shaft quenching method |
| CN114737031A (en) * | 2022-05-24 | 2022-07-12 | 安徽明雁齿轮有限公司 | Automatic high-frequency quenching device for thin-wall short bushing |
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