CN105872939A - Automatic centering device - Google Patents
Automatic centering device Download PDFInfo
- Publication number
- CN105872939A CN105872939A CN201610368382.2A CN201610368382A CN105872939A CN 105872939 A CN105872939 A CN 105872939A CN 201610368382 A CN201610368382 A CN 201610368382A CN 105872939 A CN105872939 A CN 105872939A
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- China
- Prior art keywords
- cone
- positioning sleeve
- mandrel
- cone positioning
- tooth
- 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.)
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
Abstract
The invention discloses an automatic centering device. The device comprises a central spindle, a cone positioning sleeve and an elastic element. One end of the central spindle serves as a contact end; the central spindle is sleeved with the cone positioning sleeve which makes contact with the outer surface of the central spindle and slides in the axial direction of the central spindle, the cone positioning sleeve comprises an outer conical surface and an inner conical surface which are arranged coaxially around the central spindle, and the outer conical surface and the inner conical surface are located at the same end of the cone positioning sleeve and protrude out of the surface where the contact end is located; the elastic element is arranged between the central spindle and the cone positioning sleeve and is arranged to apply acting force to the cone positioning sleeve in the working direction when working. According to the device, coaxial assembling of a basin-shaped product A and a cylindrical product B can be achieved.
Description
Technical field
The present invention relates to speaker manufacturing technology field, in particular it relates to a kind of self-centering apparatus,
Particularly relate to a kind of self-centering apparatus of centering when peviform product A and columnar product B assemble.
Background technology
Along with the lifting of electro-acoustic product performance, the requirement to the concentricity that magnetic circuit system assembles is the tightest
Lattice.Magnetic circuit system includes peviform product A and columnar product B, wherein, peviform product A, such as limit magnetic
Ferrum or frame.Columnar product B, such as centring magnet.In magnetic circuit system assembling process, more make
The frock chock fixing by size controls the gap between two kinds of products, thus controls concentricity.This
The shortcoming of one mode is, is affected bigger by the margin of tolerance of product size.If product size tolerance model
Enclosing relatively big, aforesaid way would become hard to ensure the concentricity of magnetic circuit system.
Summary of the invention
It is an object of the present invention to provide the new solution of a kind of self-centering apparatus.
According to the first aspect of the invention, it is provided that a kind of self-centering apparatus.This device includes: core
Axle, one end of described mandrel is contact jaw；
The appearance of the cone positioning sleeve being set on described mandrel, described cone positioning sleeve and described mandrel
Face contacts and sliding axially along described mandrel, and described cone positioning sleeve includes around described mandrel
The male cone (strobilus masculinus) being coaxially disposed and inner conical surface, described male cone (strobilus masculinus) and described inner conical surface are positioned at described cone location
Same one end of set, described male cone (strobilus masculinus) and described inner conical surface protrude from the surface at described contact jaw place；
It is arranged on the flexible member between described mandrel and described cone positioning sleeve, described flexible member quilt
It is set to during work, along operative orientation, described cone positioning sleeve is applied active force.
Selectively, described cone positioning sleeve includes inner cone positioning sleeve and the outer cone location being slidably matched
Set,
Described inner cone positioning sleeve contacts with described outer surface, and described inner cone positioning sleeve has multiple inner cone
Tooth, described inner cone tooth has described inner conical surface；
Described outer cone positioning sleeve contacts with described outer surface, and described outer cone positioning sleeve has multiple outer cone
Tooth, described outer cone tooth has described male cone (strobilus masculinus), and described inner cone tooth is arranged with described outer cone space of teeth.
Selectively, described mandrel is circular shaft or square shaft, described inner cone tooth equivalently-sized,
Described inner cone tooth is 4 and is evenly distributed centered by described mandrel；The size of described outer cone tooth
Identical, described inner cone tooth is 4 and is evenly distributed centered by described mandrel.
Selectively, the end of 4 described inner cone teeth is positioned at same with the end of 4 described inner cone teeth
Plane.
Selectively, described inner cone positioning sleeve and described outer cone positioning sleeve are provided with in corresponding position
Chute vertically, described mandrel also includes the alignment pin protruding from described outer surface, described alignment pin
It is arranged to match with described chute so that described inner cone positioning sleeve and described outer cone positioning sleeve have sets
Fixed impulse stroke.
Selectively, described flexible member is spring, shell fragment or elastic rubber.
Selectively, described flexible member is compression spring, and described compression spring is set in described mandrel
On, and one end of described compression spring is fixed on described mandrel, the other end of described compression spring
Abut against with described cone positioning sleeve.
Selectively, described flexible member is compression spring, and described compression spring is set in described mandrel
On, the other end relative with described contact jaw of described mandrel is provided with the shaft shoulder, described compression spring
One end abuts against with the described shaft shoulder, and the other end of described compression spring abuts against with described cone positioning sleeve.
It was found by the inventors of the present invention that in the prior art, frock chock is used to carry out peviform product A
With the centering of columnar product B, this mode is affected bigger by the margin of tolerance of product size.Therefore,
Technical assignment that the present invention is to be realized or to be solved technical problem is that those skilled in the art from
That do not expect or it is not expected that, therefore the present invention is a kind of new technical scheme.
The mandrel of this self-centering apparatus contacts with cone positioning sleeve.During use, only need to be by male cone (strobilus masculinus)
Contact with the inward flange of peviform product A, inner conical surface and the outside edge contacts of columnar product B, and apply
Active force makes peviform product A and columnar product B occurred level move, owing to male cone (strobilus masculinus) and inner conical surface are same
Axle is arranged, thus can realize peviform product A and columnar product B to the heart.
Additionally, this apparatus structure is simple, easy to operate, improve the yields of product.
By detailed description to the exemplary embodiment of the present invention referring to the drawings, its of the present invention
Its feature and advantage thereof will be made apparent from.
Accompanying drawing explanation
Combined in the description and the accompanying drawing of the part that constitutes description shows the reality of the present invention
Execute example, and together with its explanation for explaining the principle of the present invention.
The structural representation of the self-centering apparatus of Fig. 1: the embodiment of the present invention.
The exploded view of the self-centering apparatus of Fig. 2: the embodiment of the present invention.
The sectional view of the self-centering apparatus of Fig. 3: the embodiment of the present invention.
The sectional view of another angle of the self-centering apparatus of Fig. 4: the embodiment of the present invention.
The sectional view of the outer cone positioning sleeve of Fig. 5: the embodiment of the present invention.
The sectional view of the inner cone positioning sleeve of Fig. 6: the embodiment of the present invention.
In figure, 1: inner cone positioning sleeve；101: inner cone tooth；1011: inner conical surface；102: internal chute；
2: outer cone positioning sleeve；201: outer cone tooth；2011: male cone (strobilus masculinus)；202: external chute；3: alignment pin；
4: outer spring；5: inner spring；6: mandrel；601: the shaft shoulder；602: contact jaw；A: peviform is produced
Product A；B: columnar product B.
Detailed description of the invention
The various exemplary embodiments of the present invention are described in detail now with reference to accompanying drawing.It should also be noted that
Unless specifically stated otherwise, the parts that illustrate the most in these embodiments and step positioned opposite,
Numerical expression and numerical value do not limit the scope of the invention.
Description only actually at least one exemplary embodiment is illustrative below, never makees
For to the present invention and application thereof or any restriction of use.
May not beg in detail for technology, method and apparatus known to person of ordinary skill in the relevant
Opinion, but in the appropriate case, described technology, method and apparatus should be considered a part for description.
Shown here with in all examples discussed, any occurrence should be construed as merely example
Property rather than as limit.Therefore, other example of exemplary embodiment can have different
Value.
It should also be noted that similar label and letter represent similar terms, therefore, one in following accompanying drawing
A certain Xiang Yi the accompanying drawing of denier is defined, then need not it is carried out further in accompanying drawing subsequently
Discuss.
In order at least solve one of the problems referred to above, the invention provides a kind of self-centering apparatus.Such as figure
Shown in 1, this device includes: mandrel 6, cone positioning sleeve and flexible member.As in figure 2 it is shown, mandrel
One end of 6 is contact jaw 602.Mandrel 6 can be, but not limited to, circular shaft and square shaft, Ke Yigen
Select according to being actually needed.The outer surface of mandrel 6 should have flatness and the axiality of setting, with
Ensure the axiality of self-centering apparatus.
As Figure 1-4, cone positioning sleeve is set on mandrel 6.Cone positioning sleeve and mandrel 6
Outer surface contacts and sliding axially along mandrel 6.Cone positioning sleeve include around mandrel 6 and with
The male cone (strobilus masculinus) 2011 of axle setting and inner conical surface 1011.Wherein, male cone (strobilus masculinus) 2011 is away from mandrel 6
The conical surface, male cone (strobilus masculinus) 2011 has the tapering of setting.Inner conical surface 1011 is the conical surface near mandrel 6,
Male cone (strobilus masculinus) 2011 has the tapering of setting.The tapering i.e. conical surface and axial angle, inner conical surface 1011 He
The tapering of male cone (strobilus masculinus) 2011 can select according to actual needs.It is understood that tapering is the least
I.e. angle is the least, and when pressing, the component of horizontal direction is the biggest, the most laborsaving to the heart, but cone can be made fixed
The impulse stroke of position set reduces；Otherwise tapering is the biggest, then the component of horizontal direction is the least, and the heart is got over expense
Power, but cone positioning sleeve has bigger impulse stroke.Male cone (strobilus masculinus) 2011 and inner conical surface 1011 are positioned at
Same one end of cone positioning sleeve, male cone (strobilus masculinus) 2011 and inner conical surface 1011 protrude from contact jaw 602 place
Surface.
Selectively, inner conical surface 1011 and male cone (strobilus masculinus) 2011 can be the continuous print conical surfaces, it is also possible to be
Collectively constituted by multiple cone teeth with the conical surface.Cone tooth can be that wedge shape bores tooth, it is also possible to is taper cone
Tooth, such as cone cone tooth or pyramid cone tooth.When boring tooth and being wedge shape cone tooth, it is preferred that cone
Tooth has the radian of setting, with the outward flange phase with the inward flange or columnar product B of peviform product A
Coupling, it is simple to the insertion of cone tooth.
Male cone (strobilus masculinus) 2011 is opened in the outside of the end of cone positioning sleeve, and inner conical surface 1011 can be offered
Inner side at the same one end of same cone positioning sleeve.Can also be, inner conical surface 1011 and male cone (strobilus masculinus)
2011 are opened on different cone positioning sleeves, and this embodiment will be explained below explanation.
The material of mandrel 6 and cone positioning sleeve can be, but not limited to, metal, plastics, pottery etc.,
As long as having hardness and the abrasion resistance of setting, and it is easy to process.Metal optionally carbon steel,
Rustless steel, copper alloy or aluminium alloy etc., can be one-body molded in the way of using casting.In order to ensure
Smooth outer surface and the axiality of outer surface, can carry out polishing process with outer surface.Plastics are optional
Be PTFE (politef), ABS (acrylonitrile-butadiene-styrene (ABS) puts into terpolymer)
Etc. the material of high rigidity, the mode using injection is one-body molded.
As shown in Figure 1-2, flexible member is arranged between mandrel 6 and cone positioning sleeve.Flexible member
Spring, shell fragment or elastic rubber can be, but not limited to, when flexible member is arranged to work
Along operative orientation, cone positioning sleeve is applied active force.The side that operative orientation i.e. self-centering apparatus is pressed
To.Preferably, flexible member is compression spring, produces the spring of tension force when compression spring is i.e. compressed.
Compression spring is set on mandrel 6.This structure saves space, and can guarantee that the work of compression spring
Make direction parallel with mandrel 6.One end of compression spring is fixed on mandrel 6, another of compression spring
End abuts against with cone positioning sleeve.Compression spring can be made during installation to form pre-pressing force.
It is more preferable that as in figure 2 it is shown, the other end relative with contact jaw 602 of mandrel 6 sets
Being equipped with the shaft shoulder 601, one end of compression spring abuts against with the shaft shoulder 601, the other end and cone positioning sleeve
Abutting against, compression spring forms pre-pressing force.
Certainly, compression spring also can have other set-up mode, such as, arrange multiple compression spring, many
Individual compression spring is arranged between the shaft shoulder 601 and cone positioning sleeve around mandrel 6.
Can also be that stretching spring, setting of stretching spring are set between mandrel 6 and cone positioning sleeve
The mode of putting is ordinary skill in the art means, does not elaborates at this.
As shown in Figure 3-4, during use, first self-centering apparatus had male cone (strobilus masculinus) 2011 He
One end alignment peviform product A (such as frame or external magnet) of inner conical surface 1011 and columnar product B
The gap of (such as centring magnet)；Then press mandrel 6 from one end of the shaft shoulder 601, make male cone (strobilus masculinus)
2011 contact with the inward flange of peviform product A, and make outside inner conical surface 1011 and columnar product B
Side edge is touched, and should ensure that mandrel 6 and peviform product A and the plane at columnar product B place during pressing
Vertically.Owing to inner conical surface 1011 and male cone (strobilus masculinus) 2011 are inclined-plane, therefore can be to peviform product during pressing
A and columnar product B produce the thrust of horizontal direction, make the two relative movement.Due to male cone (strobilus masculinus) 2011
It is coaxially disposed centered by mandrel 6 with inner conical surface 1011, therefore can ensure that peviform product A and column are produced
Product B is arranged concentrically.Finally, continue pressing mandrel 6, make the contact jaw 602 of mandrel 6 produce with column
Product B contacts, and applies the pressure that sets so that binding agent between columnar product B and peviform product A
Diffusion.Keep the time set, make binding agent solidify, to obtain adhesive strength.
This apparatus structure is simple, easy to operate, improves the yields of completed knocked down products.Such as can carry
The axiality of high magnetic circuit system, and then improve the sound quality of electro-acoustic product.
When inner conical surface 1011 and male cone (strobilus masculinus) 2011 are arranged on same cone positioning sleeve, due to inner conical surface
1011 and male cone (strobilus masculinus) 2011 can not relative movement, therefore this centring means is only applicable to the basin that is sized
Shape product A and columnar product B to the heart, such as basin dress product A is identical with the height of columnar product B
Situation, adaptability is poor.In order to the adaptability making cone positioning sleeve is higher, such as columnar product B
Height differ bigger situation, as shown in figures 2-6, cone positioning sleeve with the height of peviform product A
Including the inner cone positioning sleeve 1 being slidably matched and outer cone positioning sleeve 2.Wherein, inner cone positioning sleeve 1 and core
The outer surface of axle 6 contacts, and inner cone positioning sleeve 1 has multiple inner cone tooth 101, and inner cone tooth 101 has
There is inner conical surface 1011.Outer cone positioning sleeve 2 contacts with outer surface, outer cone positioning sleeve 2 have multiple outside
Cone tooth 201, outer cone tooth 201 has male cone (strobilus masculinus) 2011.Inner cone tooth 101 and outer cone tooth 201 interval set
Put.Equally applicablely, multiple inner cone teeth 101 and multiple outer cone tooth 201 are coaxially disposed.Additionally,
Between the shaft shoulder 601 of inner cone tooth 101 and mandrel 6, inner spring 5 is set, at outer cone tooth 201 and mandrel 6
The shaft shoulder 601 between outer spring 4 is set.Such as, inner spring 5 and outer spring 4 are compression spring.
In the structure shown here, outer cone positioning sleeve 2 and inner cone positioning sleeve 1 can slide relative to mandrel 6,
And outer cone positioning sleeve 2 can also relative slide with inner cone positioning sleeve 1.When peviform product A and column
When the difference in height of product B is bigger, such as columnar product B is higher than peviform product A.During to the heart, automatically
The inner conical surface 1011 of the inner cone positioning sleeve 1 of centring means first with the outside edge contacts of columnar product B,
Then as mandrel 6 continue press, outer cone positioning sleeve 2 continues traveling downwardly relative to inner cone positioning sleeve 1,
Until contacting with the inward flange of peviform product A, make peviform product A and columnar product B occurred level side
To relative movement, finally realize the two to the heart.
Selectively, such as mandrel 6 is circular shaft, inner cone tooth 101 equivalently-sized, inner cone tooth 101
It is 4 and is evenly distributed centered by mandrel 6, such as 90 ° of interval.The size of outer cone tooth 201
Identical, inner cone tooth 101 is 4 and is evenly distributed centered by mandrel 6, as being spaced 90 °,
As shown in Figure 2.Such as mandrel 6 is square shaft (not shown), with each edge of square shaft accordingly
One inner cone tooth 101 and an outer cone tooth 201 are set.Certainly, art technology means can basis
It is actually needed the quantity selecting to bore tooth.
Further, for the ease of installing and using, the end of 4 inner cone teeth 101 and 4 inner cones
The end of tooth 101 is generally aligned in the same plane.
Additionally, in a kind of specific embodiment of the present invention, as shown in Figure 1-2, inner cone positions
Set 1 and outer cone positioning sleeve 2 are provided with chute vertically in corresponding position.Such as, inner cone is fixed
It is provided with internal chute 102 vertically, outside outer cone positioning sleeve 2 is provided with vertically on position set 1
Chute 202.Internal chute 102 is corresponding with the position of external chute 202.Mandrel 6 also includes protruding from
The alignment pin 3 of outer surface, alignment pin 3 is through internal chute 102 and external chute 202, to be positioned by inner cone
The position of set 1 and outer cone positioning sleeve 2 is fixed, and can make inner cone positioning sleeve 1 and outer cone positioning sleeve
2 impulse strokes with setting.Impulse stroke, i.e. inner cone positioning sleeve 1 and outer cone positioning sleeve 2 are along axle
To the scope slided.For ease of dismounting, alignment pin 3 is removably disposed on mandrel 6.
Although some specific embodiments of the present invention being described in detail by example, but
It should be appreciated by those skilled in the art, example above is merely to illustrate rather than in order to limit
The scope of the present invention processed.It should be appreciated by those skilled in the art, can be without departing from the scope of the present invention
In the case of spirit, above example is modified.The scope of the present invention is by claims
Limit.
Claims (8)
1. a self-centering apparatus, it is characterised in that including:
Mandrel (6), one end of described mandrel (6) is contact jaw (602)；
It is set in the cone positioning sleeve on described mandrel (6), described cone positioning sleeve and described mandrel
(6) outer surface contacts and sliding axially along described mandrel (6), described cone positioning sleeve
Including the male cone (strobilus masculinus) (2011) being coaxially disposed around described mandrel (6) and inner conical surface (1011), institute
State male cone (strobilus masculinus) (2011) and described inner conical surface (1011) be positioned at same one end of described cone positioning sleeve,
Described male cone (strobilus masculinus) (2011) and described inner conical surface (1011) protrude from described contact jaw (602) place
Surface；
It is arranged on the flexible member between described mandrel (6) and described cone positioning sleeve, described elasticity
Element is arranged to during work, along operative orientation, described cone positioning sleeve is applied active force.
Self-centering apparatus the most according to claim 1, it is characterised in that described cone is fixed
Position set includes inner cone positioning sleeve (1) and the outer cone positioning sleeve (2) being slidably matched,
Described inner cone positioning sleeve (1) contacts with described outer surface, and described inner cone positioning sleeve (1) has
Multiple inner cone tooth (101), described inner cone tooth (101) is had to have described inner conical surface (1011)；
Described outer cone positioning sleeve (2) contacts with described outer surface, and described outer cone positioning sleeve (2) has
Multiple outer cone tooth (201), described outer cone tooth (201) is had to have described male cone (strobilus masculinus) (2011), institute
State inner cone tooth (101) and described outer cone tooth (201) interval is arranged.
Self-centering apparatus the most according to claim 2, it is characterised in that described mandrel (6)
For circular shaft or square shaft, described inner cone tooth (101) equivalently-sized, described inner cone tooth (101)
It is 4 and is evenly distributed centered by described mandrel (6)；The chi of described outer cone tooth (201)
Very little identical, described inner cone tooth (101) is 4 and divides equably centered by described mandrel (6)
Cloth.
Self-centering apparatus the most according to claim 3, it is characterised in that 4 described inner cones
The end of tooth (101) is generally aligned in the same plane with the end of 4 described inner cone teeth (101).
Self-centering apparatus the most according to claim 2, it is characterised in that described inner cone is fixed
Position set (1) and described outer cone positioning sleeve (2) are provided with chute vertically in corresponding position,
Described mandrel (6) also includes the alignment pin (3) protruding from described outer surface, described alignment pin (3)
It is arranged to match with described chute so that described inner cone positioning sleeve (1) and described outer cone positioning sleeve (2)
There is the impulse stroke of setting.
Self-centering apparatus the most according to claim 1, it is characterised in that described elastic unit
Part is spring, shell fragment or elastic rubber.
Self-centering apparatus the most according to claim 1, it is characterised in that described elastic unit
Part is compression spring, and described compression spring is set on described mandrel (6), and described compression spring
One end be fixed on described mandrel (6), the other end of described compression spring and described cone positioning sleeve
Abut against.
Self-centering apparatus the most according to claim 1, it is characterised in that described elastic unit
Part is compression spring, and described compression spring is set on described mandrel (6), described mandrel (6)
The other end relative with described contact jaw (602) is provided with the shaft shoulder (601), described compression spring
One end abuts against with the described shaft shoulder (601), the other end of described compression spring and described cone positioning sleeve
Abut against.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610368382.2A CN105872939B (en) | 2016-05-27 | 2016-05-27 | Self-centering apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610368382.2A CN105872939B (en) | 2016-05-27 | 2016-05-27 | Self-centering apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105872939A true CN105872939A (en) | 2016-08-17 |
| CN105872939B CN105872939B (en) | 2018-12-04 |
Family
ID=56642623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610368382.2A Active CN105872939B (en) | 2016-05-27 | 2016-05-27 | Self-centering apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105872939B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115247226A (en) * | 2022-09-14 | 2022-10-28 | 广州丰东热炼有限公司 | Equipment for induction heat treatment of metal parts |
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|---|---|---|---|---|
| US4265057A (en) * | 1980-04-07 | 1981-05-05 | Hoffman Douglas L | Collet chuck aligning assembly for gem faceting machines |
| CN201279673Y (en) * | 2007-11-30 | 2009-07-29 | 南京鹏力科技有限公司 | Centring device special for multi-shaft screw automatic screw down machine |
| CN103240632A (en) * | 2013-05-24 | 2013-08-14 | 铜陵有色兴铜机电制造有限公司 | External machining fixture for one-step clamping |
| CN103433787A (en) * | 2013-09-04 | 2013-12-11 | 成都华川电装有限责任公司 | Dual taper automatic centring device |
| CN205864746U (en) * | 2016-05-27 | 2017-01-04 | 歌尔股份有限公司 | Self-centering apparatus |
-
2016
- 2016-05-27 CN CN201610368382.2A patent/CN105872939B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4265057A (en) * | 1980-04-07 | 1981-05-05 | Hoffman Douglas L | Collet chuck aligning assembly for gem faceting machines |
| CN201279673Y (en) * | 2007-11-30 | 2009-07-29 | 南京鹏力科技有限公司 | Centring device special for multi-shaft screw automatic screw down machine |
| CN103240632A (en) * | 2013-05-24 | 2013-08-14 | 铜陵有色兴铜机电制造有限公司 | External machining fixture for one-step clamping |
| CN103433787A (en) * | 2013-09-04 | 2013-12-11 | 成都华川电装有限责任公司 | Dual taper automatic centring device |
| CN205864746U (en) * | 2016-05-27 | 2017-01-04 | 歌尔股份有限公司 | Self-centering apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115247226A (en) * | 2022-09-14 | 2022-10-28 | 广州丰东热炼有限公司 | Equipment for induction heat treatment of metal parts |
| CN115247226B (en) * | 2022-09-14 | 2022-11-29 | 广州丰东热炼有限公司 | Equipment for metal part induction heat treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105872939B (en) | 2018-12-04 |
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Address after: 261031 Dongfang Road, Weifang high tech Development Zone, Shandong, China, No. 268 Applicant after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Development Zone, Shandong, China, No. 268 Applicant before: Goertek Inc. |
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