CN202185584U - Outer shuttle blank of sewing machine and forming mold of outer shuttle blank - Google Patents

Outer shuttle blank of sewing machine and forming mold of outer shuttle blank Download PDF

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Publication number
CN202185584U
CN202185584U CN2011202167148U CN201120216714U CN202185584U CN 202185584 U CN202185584 U CN 202185584U CN 2011202167148 U CN2011202167148 U CN 2011202167148U CN 201120216714 U CN201120216714 U CN 201120216714U CN 202185584 U CN202185584 U CN 202185584U
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CN
China
Prior art keywords
hole
drift
die cavity
perforation
ringwall
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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.)
Expired - Fee Related
Application number
CN2011202167148U
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Chinese (zh)
Inventor
杨耀廷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHONGSHAN YAOWEI POWDER ELEMENT CO LTD
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ZHONGSHAN YAOWEI POWDER ELEMENT CO LTD
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Priority to CN2011202167148U priority Critical patent/CN202185584U/en
Application granted granted Critical
Publication of CN202185584U publication Critical patent/CN202185584U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides an outer shuttle blank of a sewing machine and a forming mold of the outer shuttle blank. A blank structure comprises a grooved chamber, the bottom of an annular wall is connected with a bottom wall to form the grooved chamber, two lugs convexly extend on the periphery of the annular wall, the annular wall is provided with an opening and communicated with the grooved chamber, two inclined tips are respectively disposed on two sides of the opening of the annular wall, a thickened portion is protruded on each inclined tip, the bottom wall is downwards provided with a step section and an extending column in an extending manner, a through hole is disposed in the extending column, a first notch and a second notch are arranged on two sides of an opening of the bottom wall, and the blank structure is made by the aid of a middle mold, an upper first punch, an upper second punch, a lower first punch, a lower second punch, a center hole mandrel and a notch mandrel in a powder metallurgical engineering method. The outer shuttle blank and the forming mold have the advantages of excellent structural strength, easiness in processing and capability of saving cost.

Description

The outer shuttle idiosome and the shaping dies thereof of sewing machine
Technical field
The utility model relates to a kind of sewing machine structure, refers to a kind of outer shuttle idiosome and shaping dies thereof of the sewing machine that has good structural strength and be easy to process especially.
Background technology
Shown in figure 16, be existing a kind of outer tatting structure, outside in order to the interior shuttle that is set in a sewing machine; Shuttle body 90 rings of tatting structure are established a side wall 91 in addition; This side wall 91 is provided with two ears 92 in periphery, and forms a groove chamber 93 in the side wall 91, and side wall 91 has an opening 94 in a side and is communicated with this groove chamber 93; Side wall 91 is stretched in the opening 94 respectively in these opening 94 both sides and is established an oblique tip 95; Side wall 91 is in the bottom and link and to have an end wall 96, this end wall 96 to stretch down to establish an extending column 97, in extending column 97, have a perforation 98 and be through in this groove chamber 93.
Above-mentioned shuttle body 90 is to process with worker's method of founding casting; The shuttle body processed of worker's method is found in practical experience according to this, is easy to generate pore in the structure of shuttle body 90, and is lower in the structural strength at pore place; And it is damaged in the pore place easily; Make that the structural strength of product is not good, and utilize shuttle body 90 sizes of founding casting to be difficult to accurately control, and because of worker's method numerous and diverse and complicated ground influence factor; And the quality that causes shuttle body 90 foundry goods is difficult to control and cost of manufacture is high, and the waste wood consume in the processing procedure is also many.
In addition, also there is the dealer to utilize the mode of plastic rubber ejaculate molding, with whole shuttle body 90 one ejection formations; Method for making mainly is for solving the problem that metal shuttle body weight can't alleviate according to this, but the shuttle body of processing with plastic material 90, and its whole structural strength is lower compared to metal then intensity; Particularly in the oblique tip 95 of this shuttle body 90, its structure is taper comparatively, so the outer shuttle germule behind ejection formation often still must be again through cutting; Yet on the plastic material strength and toughness all than metal come low, so in working angles if careless slightly, just make oblique tip 95 damage easily; Cause the defect rate of shuttle body 90 to improve, and because of the structural strength of oblique tip 95 is comparatively fragile, make 90 service lifes of shuttle body than in metal low; So shuttle body 90 is processed with plastic rubber ejaculate molding, still have its problem to exist.
Therefore, how to solve above-mentioned shuttle body 90, be the emphasis place of the utility model with the founding casting and with the great number of issues that plastic rubber ejaculate molding is processed.
The utility model content
The purpose of the utility model is to solve the above problems and a kind of outer shuttle idiosome and shaping dies thereof of the sewing machine that has good structural strength and be easy to process is provided.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
A kind of outer shuttle idiosome of sewing machine; Can further be processed into outer shuttle and to be set in the interior shuttle of sewing machine outside, the structure of this idiosome has a ringwall, and this ringwall links an end wall and passes through empty groove chamber in wherein forming a top in the bottom; Ringwall outwards protrudes out the two relative ears that are provided with in periphery; Have a fixing hole in each ear respectively, and ringwall has an opening in a side and be communicated with this groove chamber, ringwall is respectively equipped with the oblique tip of opening direction taper in width on one day in these opening both sides; Each oblique tip has the thickening part of the indoor increase thickness of this groove on one day; This end wall is stretched down and is established class's section, and class's section is stretched down and established an extending column thus, and end wall is indoor towards having the wide gradually narrow protrusion in a footpath up in this groove; Having a perforation in this extending column, to run through protrusion indoor to this groove; End wall has one in a side of this opening and is connected in first breach of groove chamber with this opening, and end wall has one second breach in the opposite side of this first breach and be communicated with this groove chamber, and the ringwall inboard is in this second indentation, there eyebrow groove in recessed January.
A kind of shaping dies of outer shuttle idiosome of sewing machine as stated, it comprises:
Mould in one; Be to be fixed on the powder metallurgy forming machine; Have the die cavity of a ccontaining metal dust in middle mould epimere, form the outline of this ringwall, two oblique tips and thickening part and two ears with correspondence, in middle mould hypomere have one in middle mould first through hole of perforation die cavity; This first through hole is to should end wall profile, in the side of this first through hole be adjacent to run through a pair of should opening and vertical perforation of first breach;
First drift on one; Can vertically be pressed to the metal dust in the extruding die cavity by mould top in this drivingly; When first drift has one first splenium and this die cavity pressing on this in the end when forming this ringwall, 2 second spleniums and this die cavity pressing when forming this two ear and 2 the 3rd spleniums and this die cavity pressing to form this two oblique tip and thickening part; First drift forms one second through hole on this in this first splenium, and this second through hole can be communicated with this first through hole and vertically perforation by corresponding profile;
Second drift on one; Be arranged in second through hole of first drift on this, can be by drivingly by mould top straight skidding in this, press to the metal dust in this die cavity with the end of second drift on this; The degree of depth to this groove chamber is shaped runs through one the 3rd through hole in second drift on this;
First drift once; Can be pushed up the metal dust to the die cavity on vertically by middle mould below drivingly; First drift has the end of the corresponding profile that forms this class's section under this; And in running through one the 4th through hole in first drift down, it is identical with the external diameter of this extending column that the aperture of this 4th through hole is adjacent to the end that forms this class's section;
Once second drift is to be arranged in the 4th through hole, and the predetermined length gap that is shaped of this extending column of an end that penetrates reservation, has one the 5th through hole in second drift down in this, and this 5th through hole communicates with the 3rd through hole;
One medium pore plug is arranged in the 5th through hole and the 3rd through hole, to form the perforation in this extending column;
One breach plug is arranged in this vertically perforation and this second through hole, to form this first breach.
Mould opposite side in vertically perforation in die cavity has eyebrow perforation in January in said, and this second through hole also communicates with a month eyebrow perforation with the corresponding profile of this month eyebrow perforation, with January the eyebrow plug be arranged in moon eyebrow and bore a hole and this second through hole, to form this second breach; The die cavity of mould bottom is in the adjacent side eyebrow projection in protruding January of this month eyebrow perforation, with this month eyebrow groove that is shaped in being somebody's turn to do.
Said die cavity has one the 6th through hole in two ear's shaping positions respectively at the center, and each is arranged in when being shaped respectively in the 6th through hole with a fixing hole plug, with the fixing hole in this ear respectively of being shaped.
The beneficial effect of the utility model is: have good structural strength and be easy to processing, save cost.
Description of drawings
Fig. 1 is the stereo appearance figure of the utility model China and foreign countries shuttle idiosome.
Fig. 2 is the sectional structure sketch map of the utility model China and foreign countries shuttle idiosome.
Fig. 3 A is the vertical view of middle mould in the utility model.
Fig. 3 B is the side cutaway view of middle mould in the utility model.
Fig. 4 A is the vertical view of last first drift in the utility model.
Fig. 4 B is the side cutaway view of last first drift in the utility model.
Fig. 5 A is the vertical view of last second drift in the utility model.
Fig. 5 B is the side cutaway view of last second drift in the utility model.
Fig. 6 A is the vertical view of following first drift in the utility model.
Fig. 6 B is the side cutaway view of following first drift in the utility model.
Fig. 7 A is the vertical view of following second drift in the utility model.
Fig. 7 B is the side cutaway view of following second drift in the utility model.
Fig. 8 A is the vertical view of breach plug in the utility model.
Fig. 8 B is the side cutaway view of breach plug in the utility model.
Fig. 9 A is the vertical view of month eyebrow plug in the utility model.
Fig. 9 B is the side cutaway view of month eyebrow plug in the utility model.
Figure 10 is that the set of molds of the utility model is established the schematic side view with the shaping idiosome.
Figure 11 is that the set of molds of the utility model is established another schematic side view with the shaping idiosome.
Figure 12 is the ringwall of idiosome in the utility model and the sketch map that ear is shaped.
Figure 13 is the sketch map that the end wall of idiosome in the utility model is shaped.
Figure 14 is class's section of idiosome in the utility model and the sketch map that extending column is shaped.
Figure 15 is the sketch map of the vertical perforation and month eyebrow perforation shaping of idiosome in the utility model.
Figure 16 is the stereo appearance figure of existing outer shuttle idiosome.
The specific embodiment
See also Fig. 1 to Figure 15, the example structure of selecting for use for the utility model shown in the figure, this only supplies the usefulness of explanation, in patent application, does not receive the restriction of this kind structure.
Present embodiment provides a kind of outer shuttle idiosome and shaping dies thereof of sewing machine, below the first structure of this outer shuttle idiosome of explanation, and further besides the shaping dies of this outer shuttle idiosome of bright shaping.
The outer shuttle idiosome of the sewing machine described in the present embodiment is further to be processed into outer shuttle, and is outside with the interior shuttle that is set in sewing machine; This idiosome of stating 1 is to process with powder metallurgy worker method; Like Fig. 1, shown in Figure 2, its structure has a ringwall 10, and this ringwall 10 links an end wall 11 in the bottom; Ringwall 10 and should end wall 11 among form a groove chamber 12, these 12 tops, groove chamber pass through empty and in can being sheathed on shuttle outside.Ringwall 10 outwards protrudes out two ears 13 in periphery, and this two ear 13 of protruding out is that the periphery in ringwall 10 is and is oppositely arranged, and has a fixing hole 130 in each ear 13 respectively.And ringwall 10 has an opening 14 in a side; This opening 14 is to be communicated with this groove chamber 12; Ringwall 10 is respectively equipped with an oblique tip 15 in these opening 14 both sides; Each oblique tip 15 is that ringwall 10 forms towards opening 14 direction taper in width, and each oblique tip 15 has a thickening part 150, and this thickening part is in this groove chamber 12, to increase thickness by oblique tip 15.This end wall 11 is stretched down and is established class's section 16; And class's section 16 is stretched down and is established an extending column 17 thus, and end wall 11 in this groove chamber 12 towards having a protrusion 110, these protrusion 110 footpaths are wide gradually narrow up by end wall 11; Have a perforation 170 in this extending column 17 and run through protrusion 110 to this groove chamber 12; End wall 11 has one first breach 18 in a side of this opening 14, and this first breach 18 is connected in groove chamber 12 with this opening 14, and end wall 11 has one second breach 19 in the opposite side of this first breach 18; This second breach 19 is communicated with this groove chamber 12, ringwall 10 inboards in these second breach, 19 places recessed January eyebrow groove 100.
The shaping dies of sewing machine described in present embodiment China and foreign countries shuttle idiosome, its structure be like Fig. 3 A to shown in Fig. 9 B, each is same member in scheming, and only representes with vertical view in the first half that then represent with the generalized section of side-looking in Lower Half, this shaping dies comprises:
Mould 2 in one; Be to be fixed on the powder metallurgy forming machine (not shown), shown in Fig. 3 A and Fig. 3 B, mould 2 epimeres have a die cavity 20 with ccontaining metal dust in this; This die cavity 20 is with the corresponding outline that forms this ringwall 10, two ears 13 and two oblique tips 15 and thickening part 150 of its profile; Have one first through hole 21 in middle mould 2 hypomeres, this first through hole 21 connects die cavity 20 in middle mould, and 21 pairs of this first through holes should end wall 11 profiles; Side in this first through hole 21 is adjacent to run through a vertically perforation 22, and vertically 22 pairs of perforation should the opening 14 and first breach 18 with this.
First drift 3 on one; Can vertically be pressed to the metal dust in the extruding die cavity 20 by 2 tops of mould in this drivingly; Shown in Fig. 4 A and Fig. 4 B; First drift 3 has one first splenium 30,2 second spleniums 31 and 2 the 3rd spleniums 32 on this in the end; This first splenium 30 during with these die cavity 20 pressings forming this ringwall 10, this 2 second splenium 31 during with these die cavity 20 pressings forming this two ear 13, and this 2 the 3rd splenium 32 during with these die cavity 20 pressings to form this two oblique tip 15 and thickening part 150; First drift 3 forms one second through hole 33 on this in this first splenium 30, and this second through hole 33 can be communicated with this first through hole 21 and vertically perforation 22 by corresponding profile.
Second drift 4 on one; Shown in Fig. 5 A and Fig. 5 B; Second drift 4 is to be arranged in second through hole 33 of first drift 3 on this on this, can be by drivingly by the 2 top straight skiddings of mould in this, press to the metal dust in this die cavity 20 with the end 40 of second drift 4 on this; The degree of depth to this groove chamber 12 is shaped runs through one the 3rd through hole 41 in second drift 4 on this.In present embodiment, has the recess 42 of this protrusion 110 of shaping in the end 40 of second drift 4.
First drift 5 once; Can be pushed up the metal dust to the die cavity 20 on vertically by middle mould 2 belows drivingly; Shown in Fig. 6 A and Fig. 6 B; This has the corresponding profile that forms this class's section 16 in end 50 of first drift 5 down, and in running through one the 4th through hole 51 in first drift 5 down, it is identical with the external diameter of this extending column 17 that the aperture of this 4th through hole 51 is adjacent to the end 60 that forms this class's section 16.
Second drift 6 once; Shown in Fig. 7 A and Fig. 7 B, second drift 6 is to be arranged in the 4th through hole 51 under this, and an end that penetrates is reserved this extending column 17 predetermined length gaps that are shaped; Has one the 5th through hole 60 in second drift 6 down in this; This 5th through hole 60 communicates with the 3rd through hole 41, is arranged in the 5th through hole 60 and the 3rd through hole 41 with a medium pore plug 7, to form the perforation 170 in this extending column 17.
One breach plug 8, shown in Fig. 8 A and Fig. 8 B, this breach plug 8 is to be arranged in this vertically perforation 22 and this second through hole 33, to form this first breach 18.
The middle mould 2 of present embodiment; Be that the opposite side in vertically perforation 22 has eyebrow perforation in January 23 in die cavity 20; This second through hole 33 and bore a hole with the corresponding profile of this month eyebrow perforation 23 and month eyebrow 23 communicates; To be arranged in moon eyebrow perforation 23 and this second through hole 33, to form this second breach 19 just like month eyebrow plug 24 shown in Fig. 9 A and Fig. 9 B; Die cavity 20 bottoms of mould 2 are in the adjacent side eyebrow projection in protruding January 25 of this month eyebrow perforation 23, with this month eyebrow projection 25 shaping this month eyebrow grooves 100 in being somebody's turn to do.
This die cavity 20 has one the 6th through hole 26 in two ears, 13 shaping positions respectively at the center, and each is arranged in when being shaped respectively in the 6th through hole 26 with a fixing hole plug 27, with the fixing hole 130 in this ear 13 respectively of being shaped.
Shown in figure 10; Be the sectional structure of this idiosome 1 of die forming of the utility model, wherein should in mould 2 be positioned at middle position, first drift 3 reaches last second drift 4 and is positioned at these die cavity 20 tops and presses down this on; And this time first drift 5 and down second drift 6 be positioned at and push up on these die cavity 20 belows; This medium pore plug 7 is then vertically passed by mold center, and is and for example shown in Figure 11, and this breach plug 8 is worn by these 22 shaping positions of vertically boring a hole; This month eyebrow plug 24 then by this month eyebrow 23 shaping positions of boring a hole wear, two fixing hole plugs 27 promptly wear in fixing hole 130 shaping positions.Shown in the vertical view of Figure 12, when this first drift 3 is pressed down by die cavity 20 tops, 0 ringwall 10 of the idiosome 1 that can be shaped and ear's 13 parts; Shown in the vertical view of Figure 13, second drift 4 is pressed down by die cavity 20 tops on this, and cooperates this time first drift 5 when pushing up on die cavity 20 belows, and end wall 11 parts and groove chamber 12 can be shaped; Shown in the upward view of Figure 14, this time first drift 5 and down second drift 6 can form in the class's section 16 and the extending column 17 of idiosome 1 below when pushing up on die cavity 20 belows; Shown in the vertical view of Figure 15, this medium pore plug 7, breach plug 8, breach plug 8, month eyebrow plug 24 and fixing hole plug 27 are respectively by detaching in the die cavity 20, and corresponding each perforation structure that promptly is shaped is with shaping idiosome 1.
Visible by above-mentioned explanation; The outer shuttle idiosome of the utility model; Be to utilize above-mentioned mould to make with worker's method of powder metallurgy; Made idiosome is that metal material is processed and had its structural strength, can solve it compared to existing shuttle body with founding cast form and produce bubble and the problem that influences structure, and make with worker's method of powder metallurgy and to have the simple advantage of processing procedure; And whole structural strength is good than the shuttle body of plastic rubber ejaculate molding also; And the two oblique tips 15 of the utility model have a thickening part 150 respectively towards the inboard of groove chamber, have preferable processing intensity when making idiosome be shaped its finished product structure in this oblique tip 15 of processing, are difficult for making oblique tip 15 to add damage in man-hour and fracture.Therefore the outer shuttle idiosome of the utility model utilizes shaping dies to process; Has good structural strength; And production process is simple and easy, makes cost so can reduce effectively to execute, and with powder metallurgy worker method producer; Can avoid waste material to produce, can save the effect that material cost also can reach environmental protection by contrast.
The announcement of the above embodiment is in order to explanation the utility model, is not in order to restriction the utility model, so the displacement of the change of numerical value or the equivalence element claim that must be subordinate to the utility model is protected category such as.
By above detailed description, can make the clear the utility model of those skilled in the art can reach aforementioned purpose really, the real regulation that has met Patent Law then proposes patent application in accordance with the law.

Claims (4)

1. the outer shuttle idiosome of a sewing machine can further be processed into outer shuttle and to be set in the interior shuttle of sewing machine outside, it is characterized in that; The structure of this idiosome has a ringwall; This ringwall links an end wall and passes through empty groove chamber in wherein forming a top in the bottom, ringwall outwards protrudes out the two relative ears that are provided with in periphery, has a fixing hole in each ear respectively; And ringwall has an opening in a side and is communicated with this groove chamber; Ringwall is respectively equipped with the oblique tip of opening direction taper in width on one day in these opening both sides, each oblique tip has the thickening part of the indoor increase thickness of this groove on one day, and this end wall is stretched down and established class's section; And class's section is stretched down and is established an extending column thus; And indoor having a perforation in this extending column, to run through protrusion indoor to this groove towards having the wide gradually narrow protrusion in a footpath up in this groove for end wall, and end wall has one in a side of this opening and is connected in first breach of groove chamber with this opening; And end wall has one second breach in the opposite side of this first breach and is communicated with this groove chamber, and the ringwall inboard is in this second indentation, there eyebrow groove in recessed January.
2. shaping dies of the outer shuttle idiosome of sewing machine according to claim 1 is characterized in that it comprises:
Mould in one; Be to be fixed on the powder metallurgy forming machine; Have the die cavity of a ccontaining metal dust in middle mould epimere, form the outline of this ringwall, two oblique tips and thickening part and two ears with correspondence, in middle mould hypomere have one in middle mould first through hole of perforation die cavity; This first through hole is to should end wall profile, in the side of this first through hole be adjacent to run through a pair of should opening and vertical perforation of first breach;
First drift on one; Can vertically be pressed to the metal dust in the extruding die cavity by mould top in this drivingly; When first drift has one first splenium and this die cavity pressing on this in the end when forming this ringwall, 2 second spleniums and this die cavity pressing when forming this two ear and 2 the 3rd spleniums and this die cavity pressing to form this two oblique tip and thickening part; First drift forms one second through hole on this in this first splenium, and this second through hole can be communicated with this first through hole and vertically perforation by corresponding profile;
Second drift on one; Be arranged in second through hole of first drift on this, can be by drivingly by mould top straight skidding in this, press to the metal dust in this die cavity with the end of second drift on this; The degree of depth to this groove chamber is shaped runs through one the 3rd through hole in second drift on this;
First drift once; Can be pushed up the metal dust to the die cavity on vertically by middle mould below drivingly; First drift has the end of the corresponding profile that forms this class's section under this; And in running through one the 4th through hole in first drift down, it is identical with the external diameter of this extending column that the aperture of this 4th through hole is adjacent to the end that forms this class's section;
Once second drift is to be arranged in the 4th through hole, and the predetermined length gap that is shaped of this extending column of an end that penetrates reservation, has one the 5th through hole in second drift down in this, and this 5th through hole communicates with the 3rd through hole;
One medium pore plug is arranged in the 5th through hole and the 3rd through hole, to form the perforation in this extending column;
One breach plug is arranged in this vertically perforation and this second through hole, to form this first breach.
3. like the shaping dies of the outer shuttle idiosome of the said sewing machine of claim 2; It is characterized in that; Mould opposite side in vertically perforation in die cavity has eyebrow perforation in January in said; This second through hole also communicates with a month eyebrow perforation with the corresponding profile of this month eyebrow perforation, with January the eyebrow plug be arranged in moon eyebrow and bore a hole and this second through hole, to form this second breach; The die cavity of mould bottom is in the adjacent side eyebrow projection in protruding January of this month eyebrow perforation, with this month eyebrow groove that is shaped in being somebody's turn to do.
4. like the shaping dies of the outer shuttle idiosome of the said sewing machine of claim 3; It is characterized in that; Said die cavity has one the 6th through hole in two ear's shaping positions respectively at the center, and each is arranged in when being shaped respectively in the 6th through hole with a fixing hole plug, with the fixing hole in this ear respectively of being shaped.
CN2011202167148U 2011-06-24 2011-06-24 Outer shuttle blank of sewing machine and forming mold of outer shuttle blank Expired - Fee Related CN202185584U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011202167148U CN202185584U (en) 2011-06-24 2011-06-24 Outer shuttle blank of sewing machine and forming mold of outer shuttle blank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011202167148U CN202185584U (en) 2011-06-24 2011-06-24 Outer shuttle blank of sewing machine and forming mold of outer shuttle blank

Publications (1)

Publication Number Publication Date
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Application Number Title Priority Date Filing Date
CN2011202167148U Expired - Fee Related CN202185584U (en) 2011-06-24 2011-06-24 Outer shuttle blank of sewing machine and forming mold of outer shuttle blank

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103952864A (en) * 2014-04-28 2014-07-30 宁波市鄞州勇耀缝制机械有限公司 Technology for manufacturing external shuttle of rotating shuttle of sewing machine
CN106041094A (en) * 2016-07-07 2016-10-26 马鞍山市华东粉末冶金厂 Camshaft toothed wheel hub for automobile engine and powder metallurgical preparation method for camshaft toothed wheel hub

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103952864A (en) * 2014-04-28 2014-07-30 宁波市鄞州勇耀缝制机械有限公司 Technology for manufacturing external shuttle of rotating shuttle of sewing machine
CN103952864B (en) * 2014-04-28 2015-09-30 宁波市鄞州勇耀缝制机械有限公司 The manufacturing technique of the outer shuttle of sewing-machine rotating shuttle
CN106041094A (en) * 2016-07-07 2016-10-26 马鞍山市华东粉末冶金厂 Camshaft toothed wheel hub for automobile engine and powder metallurgical preparation method for camshaft toothed wheel hub
CN106041094B (en) * 2016-07-07 2018-12-25 马鞍山市华东粉末冶金厂 A kind of automobile engine camshaft toothed wheel wheel hub and its method for preparing powder metallurgy

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120411

Termination date: 20130624