CN203751468U - Wire holding mechanism of wire cut electric discharge machine - Google Patents
Wire holding mechanism of wire cut electric discharge machine Download PDFInfo
- Publication number
- CN203751468U CN203751468U CN201420152692.7U CN201420152692U CN203751468U CN 203751468 U CN203751468 U CN 203751468U CN 201420152692 U CN201420152692 U CN 201420152692U CN 203751468 U CN203751468 U CN 203751468U
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- CN
- China
- Prior art keywords
- wire
- axle
- wire tray
- bearing
- axial thrust
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Abstract
The utility model discloses a wire holding mechanism of a wire cut electric discharge machine. The wire holding mechanism of the wire cut electric discharge machine comprises a spindle and a wire disc, the spindle is fixed on a lead rail of the wire cut electric discharge machine, and the wire disc sleeves the spindle and is driven to rotate along the spindle through an outer motor; two axial thrust bearings sleeve the spindle, are symmetrically mounted at two sides of the wire disc and are clung to the surface of the wire disc; two locking nuts for locking the axial thrust bearings on the wire disc sleeve the spindle, and each axial thrust bearing is corresponding to one locking nut. By means of said structure of the wire holding mechanism, the wire disc is firmly fixed on the spindle, the wire disc is effectively avoided from axial jump and radial dump, and accordingly the electrode wire disorder due to the wire disc jump is avoided.
Description
Technical field
The utility model relates to a kind of Wire EDM equipment, and more particularly, it relates to a kind of Zhuan Si mechanism of WEDM.
Background technology
WEDM is mainly used in all kinds of moulds, electrode, precision parts manufacture, the complex-shaped surface mould of the various electric conductors such as carbide alloy, hardened steel, graphite, aluminium alloy, structural steel, stainless steel, titanium alloy, diamond and the processing of curved surface body.Adopt computerized control system, complete Chinese Automatic Drawing programming, control software.In processing, there are track, time showing, can understand at any time processing situation.
In the Chinese invention patent prospectus that is 200510107889.4 in the patent No., the FANUC Co., Ltd of Japan discloses a kind of WEDM, improve the contact between line electrode and conducting element and line electrode does not deform, thereby restrain the generation of fine discharge, and reduce the unnecessary load of line electrode and WEDM, and on on-line operation path, produce space easily, connect thereby realize easily transfer matic.In WEDM, there is a conducting element, for being provided for the electric power of electric discharge processing to line electrode and line electrode being slided on conducting element along operating path, with one can be movably near or leave the moving element of described conducting element, be positioned at respect on the operating path position relative with conducting element.According to this configuration, can remain the contact between line electrode and conducting element, and line electrode is indeformable.
Visible, the WEDM of prior art, its principle is to cut by wire electrode melt au metal surface.Because WEDM of the prior art is all shuttle conventionally, therefore wire electrode need to move back and forth on workpiece to be processed surface, causes the loss of wire electrode.Because wire electrode is in continuous loss, therefore in the WEDM of prior art, often there will be the phenomenon of fracture of wire, make the wire electrode in wire storage tube use critical distance soon and need to change silk.
Zhuan Si mechanism conventional in prior art is disclosed in Figure of description Fig. 2 of this description, it comprises axle (1), be plugged on the guide rail (2) of WEDM and be fixed, in axle, be arranged with a wire tray (3), in wire tray, be wound with wire electrode, wire electrode in wire tray is fixed in wire storage tube by guide wheel (not shown), start subsequently motor, wire electrode is wrapped in wire storage tube along with wire storage tube rotates, thereby by pulling wire electrode to drive wire tray to rotate in axle.
But in the Zhuan Si of above-mentioned prior art mechanism, due in the process of rotating, wire tray is unfixing in axle, likely can cause wire tray play in axle, cause the wire electrode may sleave.Operator normally fixes by hand or instrument at present, because wire tray rotating speed is very fast, can send amount of heat, make artificial fixing mode both danger also require great effort.
Utility model content
Technical problem to be solved in the utility model is the Zhuan Si mechanism that a kind of fixed, WEDM that can not generating electrodes silk sleave fault is provided for the above-mentioned state of the art.
For achieving the above object, the utility model provides following technical scheme:
A kind of Zhuan Si mechanism of WEDM, include axle and wire tray, described axle is fixed on the guide rail of described WEDM, described wire tray is set in described axle, and can under the driving of extraneous motor, rotate around described axle, wherein, in described axle, be arranged with two axial thrust bearings, the both sides that are arranged on described wire tray of two described axial thrust bearing symmetries, and abut on the surface of described wire tray;
In described axle, be also arranged with two for described axial thrust bearing is locked to the locking nut in wire tray, each axial thrust bearing is to there being a locking nut.
Adopting the Zhuan Si mechanism of the WEDM of this structure, is mainly a sheathed wire tray in axle, and by sheathed axial thrust bearing and lock screw in axle, wire tray is firmly fixed in axle and prevents that it from doing axial play along axle.
As the improvement of above-mentioned Zhuan Si mechanism in the utility model, described wire tray center offers axial through hole, the internal diameter of described through hole is greater than the external diameter of described axle, between described wire tray and described axle, be provided with journal bearing, described wire tray is rotatably mounted in described axle by described journal bearing.
Under perfect condition, if the internal diameter of the central through hole of wire tray is processed into identical with the external diameter of axle, to prevent that wire tray from doing play radially in axle, but the difficulty of this processing is very big, more or less can exist error, if the internal diameter of wire tray central through hole is processed into the external diameter that is slightly larger than axle, be difficult to avoid the radial-play of wire tray, if the internal diameter of wire tray central through hole is processed into the external diameter that is slightly less than axle, adopt again the mode of interference fit that wire tray is socketed in axle, wire tray just can not be rotated in axle so, cannot meet the demands.Therefore, between wire tray and axle, be provided with a journal bearing, both can have realized wire tray and rotate in axle by this journal bearing is set, can avoid again the radial-play of wire tray.
As the further improvement of above-mentioned Zhuan Si mechanism in the utility model, describedly fixedly refer to that rotationally described journal bearing comprises bearing inner race and bearing outer ring, described bearing outer ring can rotate relative to described bearing inner race, described bearing inner race by nut check in described axle, described bearing outer ring is along being circumferentially provided with some inserting, described wire tray on described through-hole wall, offer some with described in the adaptive groove of inserting, described wire tray is inserted and being fixed on described bearing outer ring of described groove by described.
Adopt the Zhuan Si mechanism of this structure, that journal bearing is divided into bearing inner race and bearing outer ring, and edge circumferentially arranges some inserting on bearing outer ring, on through-hole wall, offer the some and adaptive groove of inserting, wire tray is fixed on axial outer ring with coordinating of groove by inserting.Because bearing outer ring can rotate relative to bearing inner race, bearing inner race is fixed in axle by nut.Thereby by this journal bearing, wire tray and axle are linked up, and can prevent the radial-play of wire tray.
As the concrete technical scheme of above-mentioned Zhuan Si mechanism in the utility model, between described locking nut and described axial thrust bearing, be provided with packing ring.By the pressure of this packing ring latching buffer jack panel to axial thrust bearing, the surface of the axial thrust bearing of avoiding wearing and tearing.
In sum, compared with prior art, the utility model has the advantage of: be a sheathed wire tray in axle, and by sheathed axial thrust bearing and lock screw in axle, wire tray is firmly fixed in axle and prevents that it from doing axial play along axle, avoid the radial-play of wire tray by a journal bearing is set between wire tray and axle, thereby wire tray can be fixed with respect to axle.
Brief description of the drawings
Fig. 1 is the structural representation of the Zhuan Si mechanism of electro-spark cutting machine in the utility model embodiment;
Fig. 2 is the structural representation of the Zhuan Si mechanism of electro-spark cutting machine in prior art;
Fig. 3 is the syndeton schematic diagram of journal bearing between Fig. 1 embodiment central shaft and wire tray;
Fig. 4 is the syndeton schematic diagram of Fig. 3 embodiment middle (center) bearing outer ring and wire tray.
Reference numeral:
1, axle; 1.1, Part I; 1.2, Part II; 1.3, Part III; 2, wire tray; 2.1, through hole; 2.1.1, groove; 3, guide rail; 4, journal bearing; 4.1, bearing inner race; 4.1.1, nut; 4.2, bearing outer ring; 4.2.1, insert; 5, axial thrust bearing; 5.1, Ding Quan; 5.2, moving-coil; 6, locking nut; 7, packing ring; (1), axle; (2), guide rail; (3), wire tray.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Figure 1, the present embodiment is a kind of Zhuan Si mechanism of WEDM, include axle 1 and wire tray 2, described axle is fixed on the guide rail 3 of described WEDM, concrete, on this guide rail 3, offer a T-slot, axle is plugged in this T-slot and by screw rod and briquetting etc. this axle 1 is fixed in this T-slot.
In described axle, be shaped the successively different Part I 1.1 of external diameter, Part II 1.2 and Part III 1.3, the external diameter of Part II is greater than Part I and Part III, whole single mandrel is looked like broad in the middle, a kind of shape that two is little.And, between Part I and Part II, Part II and Part III, being formed with step surface, the Part I of described axle is that section being plugged in T-slot.
On the Part III 1.3 of described axle, be arranged with a wire tray, wire tray outer ring is wound with wire electrode (not shown), and wire tray can be under the drive of wire electrode be rotated (similar with the Zhuan Si of the prior art mechanism shown in Fig. 2) around axle.
As shown in Figure 3 and Figure 4, the center of wire tray offers an axial through hole 2.1, the aperture of this through hole is greater than the external diameter of axle, thereby between through-hole wall and axle, form certain gap, in this gap, be provided with a journal bearing 4, this journal bearing code name is 607(GB/276-1994), described journal bearing 4 includes bearing inner race 4.1 and bearing outer ring 4.2, bearing inner race 4.1 is fixed on the surface of axle by nut 4.1.1, described bearing outer ring 4.2 can rotate around bearing inner race 4.1 that (this belongs to prior art, general bearing can be accomplished).On described bearing outer ring, along circumferentially offering multiple 4.2.1 of inserting, insert and protrude with respect to the surface of bearing outer ring, on the inside of the through hole 2.1 of described wire tray, offer the groove 2.1.1 that inserts adaptive with this.Wire tray 2 is connected on bearing outer ring with being fixed of groove by inserting, thereby can drive bearing outer ring to rotate around bearing inner race by this wire tray 2.
Again as shown in Figure 1, in described axle, be arranged with two axial thrust bearings 5, the both sides that are arranged on described wire tray 2 of two above-mentioned axial thrust bearing 5 symmetries, above-mentioned axial thrust bearing code name is 51100(GB/T 301-1995), be a kind of thrust ball bearing (thrust ball bearing is divergence type bearing common in a kind of prior art, blowout patche, seat ring can with the components apart of retainer, steel ball.Blowout patche is the lasso matching with axle, and seat ring is the lasso matching with bearing saddle bore, and gapped between axle; Thrust ball bearing is merely able to bear axial load, and single direction thrust ball bearing is the axial load that can only bear a direction, and double-direction thrust ball bearing can bear the axial load of both direction; Thrust ball bearing can not restrictive axes radial displacement, limit speed is very low, single direction thrust ball bearing can restrictive axes and the axial displacement of a direction of housing, two-way bearing can limit the axial displacement of both direction).
This axial thrust bearing includes determines circle 5.1 and moving-coil 5.2, and fixed circle and moving-coil are respectively vertically respectively in axle, and fixed circle and axle are fixed together by interference fit, and moving-coil is near wire tray setting, and abuts in the surface of described wire tray 2.
In described axle 1, be also arranged with two for described axial thrust bearing 5 is locked to the locking nut 6 in wire tray, each axial thrust bearing is to there being a locking nut 6.This locking nut 6 is close to axial thrust bearing 5 and is arranged, and provides coupling mechanism force that axial thrust bearing is locked in to wire tray surface, thereby wire tray is locked in axle, prevents that it from axial play occurring.
In order to prevent the surface of locking nut 6 embossing axial thrust bearings 5, between described locking nut 6 and described axial thrust bearing 5, be provided with packing ring 7.
The above is only preferred embodiment of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. the Zhuan Si mechanism of a WEDM, include axle and wire tray, described axle is fixed on the guide rail of described WEDM, described wire tray is set in described axle, and can under the driving of extraneous motor, rotate around described axle, it is characterized in that: in described axle, be arranged with two axial thrust bearings, the both sides that are arranged on described wire tray of two described axial thrust bearing symmetries, and abut on the surface of described wire tray;
In described axle, be also arranged with two for described axial thrust bearing is locked to the locking nut in wire tray, each axial thrust bearing is to there being a locking nut.
2. the Zhuan Si mechanism of WEDM according to claim 1, it is characterized in that: described wire tray center offers axial through hole, the internal diameter of described through hole is greater than the external diameter of described axle, between described wire tray and described axle, be provided with journal bearing, described wire tray is rotatably mounted in described axle by described journal bearing.
3. the Zhuan Si mechanism of WEDM according to claim 2, it is characterized in that: describedly fixedly refer to that rotationally described journal bearing comprises bearing inner race and bearing outer ring, described bearing outer ring can rotate relative to described bearing inner race, described bearing inner race by nut check in described axle, described bearing outer ring is along being circumferentially provided with some inserting, described wire tray on described through-hole wall, offer some with described in the adaptive groove of inserting, described wire tray is inserted and being fixed on described bearing outer ring of described groove by described.
4. the Zhuan Si mechanism of WEDM according to claim 1, is characterized in that: between described locking nut and described axial thrust bearing, be provided with packing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420152692.7U CN203751468U (en) | 2014-03-31 | 2014-03-31 | Wire holding mechanism of wire cut electric discharge machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420152692.7U CN203751468U (en) | 2014-03-31 | 2014-03-31 | Wire holding mechanism of wire cut electric discharge machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203751468U true CN203751468U (en) | 2014-08-06 |
Family
ID=51246779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420152692.7U Expired - Fee Related CN203751468U (en) | 2014-03-31 | 2014-03-31 | Wire holding mechanism of wire cut electric discharge machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203751468U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109264100A (en) * | 2018-10-29 | 2019-01-25 | 余芳利 | A kind of heat-sealing device suitable for packing captain's sealing |
| CN109279105A (en) * | 2018-10-29 | 2019-01-29 | 余芳利 | A kind of heat-sealing device suitable for the narrow sealing of packing machine |
-
2014
- 2014-03-31 CN CN201420152692.7U patent/CN203751468U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109264100A (en) * | 2018-10-29 | 2019-01-25 | 余芳利 | A kind of heat-sealing device suitable for packing captain's sealing |
| CN109279105A (en) * | 2018-10-29 | 2019-01-29 | 余芳利 | A kind of heat-sealing device suitable for the narrow sealing of packing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20150331 |
|
| EXPY | Termination of patent right or utility model |