CN204975581U - Components of a whole that can function independently welding screw tap extension reducing sleeve - Google Patents
Components of a whole that can function independently welding screw tap extension reducing sleeve Download PDFInfo
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- CN204975581U CN204975581U CN201520495249.4U CN201520495249U CN204975581U CN 204975581 U CN204975581 U CN 204975581U CN 201520495249 U CN201520495249 U CN 201520495249U CN 204975581 U CN204975581 U CN 204975581U
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- hole
- screw tap
- adapter sleeve
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- circular hole
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Abstract
The utility model discloses a components of a whole that can function independently welding screw tap extension reducing sleeve, including connecting rod and adapter sleeve, the connecting rod is by square head section, middle cylindrical section, connection cylindrical section triplex, the adapter sleeve is for opening the cylinder that has the centre bore, the centre bore comprises two sections round holes and one section square hole, and two sections round holes are located the both sides of square hole, and the round hole of one side is for connecting the round hole, and the round hole of opposite side is fixing round hole, and the connection cylindrical section of connecting rod inserts in the connection round hole of adapter sleeve to the tip of connecting the round hole with be connected the cylindrical section and carry out welded connection. The utility model discloses include connecting rod and adapter sleeve two parts with screw tap extension reducing sleeve, two parts are processed respectively, then the welding together, make processing easier, have guaranteed the square hole of clamping screw tap and the symmetry between the fixing round hole to guarantee the requirement of beating of screw tap, made the pitch diameter size of its processing not overproof, satisfied the designing requirement.
Description
Technical field
The utility model relates to a kind of machining aid, is specifically related to a kind of split welding screw tap and lengthens reducing sleeve.
Background technology
At present, in the production process of belt pulley, need to process dark 30 tapped blind holes of 12 × M8-6H in belt pulley, these tapped blind holes are positioned at second level end face, second level end face distance topmost end face has certain distance, and radial dimension is less between these tapped blind holes and the top angle head cylindrical, the revolution size of tap holder can not be met, the way of special screw tap tapping or employing screw tap extension rod can only be adopted, when adopting special screw tap tapping, often overlap screw tap and can only process 6 ~ 8 belt pulleys, screw tap is (127 yuan, a set of screw tap) costly, and be easy to fracture, and adopt screw tap extension rod to coordinate common M8 tap tapping, due to the machining accuracy problem of screw tap extension rod, processing rear thread central diameter dimension overproof rate is higher, reaches more than 20%, not only wastes a large amount of materials and manufacturing cost, and have impact on the normal manufacturing schedule of belt pulley.
Utility model content
The utility model technical issues that need to address are to provide a kind of split welding screw tap and lengthen reducing sleeve, coordinate regular tap processing by the screwed hole of size restriction, solve tripping problems during tap tapping, make the pitch diameter of thread size after tapping not overproof, meet production requirement.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of split welding screw tap lengthens reducing sleeve, comprise connecting rod and adapter sleeve, described connecting rod is made up of square toes section, middle circle shell of column, connecting cylinder section three part, described adapter sleeve is the cylinder having centre bore, described centre bore is made up of two sections of circular holes and one section of square hole, two sections of circular holes are positioned at the both sides of square hole, the circular hole of side is for connecting circular hole, the circular hole of opposite side is fixing circular hole, the connecting cylinder section of connecting rod is inserted in the connection circular hole of adapter sleeve, and is welded to connect in the end and connecting cylinder section connecting circular hole.
Further, the square toes section of described adapter sleeve is provided with locating hole, and described locating hole is positioned at the center of square toes section.
Further, described adapter sleeve is also provided with top wire hole, and top wire hole is positioned at and offers on one section of fixing circular hole, installs jackscrew in top wire hole, the axis of described top wire hole is crossing with the axes normal of fixing circular hole.
Further, described top wire hole totally three, be evenly distributed on adapter sleeve, and the axis of three top wire holes is positioned at the same plane vertical with fixing round hole axial.
Owing to have employed technique scheme, the technological progress that the utility model obtains is: screw tap is lengthened reducing sleeve and comprises connecting rod and adapter sleeve two parts by the utility model, two parts are processed respectively, then weld together, processing is more prone to, ensure that the symmetry between the square hole of clamping screw tap and fixing circular hole, thus ensure that the requirement of beating of screw tap, the pitch diameter of thread size making it process is not overproof, meets design requirement.
Accompanying drawing explanation
Fig. 1 is the utility model connecting rod structural representation;
Fig. 2 is the utility model connecting jacket structure schematic diagram;
Fig. 3 is the utility model sectional structure schematic diagram;
Wherein: 1, square toes section, 2, middle circle shell of column, 3, connecting cylinder section, 4, connect circular hole, 5, square hole, 6, top wire hole, 7, fixing circular hole, 8, locating hole.
Detailed description of the invention
Below in conjunction with embodiment, the utility model is described in further details:
The utility model provides a kind of split to weld screw tap and lengthens reducing sleeve, limit by processing work appearance and size for solving, the problem that normal length screw tap can not meet the demands, lengthen cover by this switching, screw tap bar can be extended, the screwed hole by the restriction of processing work appearance and size can be processed easily, solve the tripping problems of screw tap simultaneously, make the screwed hole central diameter precision of processing high, not overproof, meet design requirement.
As shown in Figures 1 to 3, the utility model by connecting rod and adapter sleeve two parts by being welded, described connecting rod is made up of square toes section 1, middle circle shell of column 2, connecting cylinder section 3 three part, square toes section 1 and middle circle shell of column 2 for being connected with tap holder, connecting cylinder section 3 for insert adapter sleeve and and adapter sleeve be welded as a whole.Described adapter sleeve is the cylinder having centre bore, described centre bore is made up of two sections of circular holes and one section of square hole 5, two sections of circular holes are positioned at the both sides of square hole, the circular hole of side is for connecting circular hole 4, for being connected rear welding with the connecting cylinder section 3 of connecting rod, the circular hole of opposite side is fixing circular hole 7, for fixing screw tap.During welding, the connecting cylinder section 3 of connecting rod is inserted in the connection circular hole 4 of adapter sleeve, and be welded to connect in the end and connecting cylinder section 3 that connect circular hole 4, welding manner adopts melting welding.
For the ease of locating conveniently, carrying out fine grinding to reducing sleeve repaiies school, and the square toes section 1 of described adapter sleeve is provided with locating hole 8, and described locating hole 8 is positioned at the center of square toes section 1.
In order in the square hole 5 that screw tap is firmly fixed on adapter sleeve and fixing circular hole 7, described adapter sleeve is also provided with top wire hole 6, and top wire hole 6 is positioned on one section that offers fixing circular hole 7, installs jackscrew in top wire hole 6, the axis of described top wire hole 6 is crossing with the axes normal of fixing circular hole 7; Described top wire hole 6 totally three, is evenly distributed on adapter sleeve, and the axis of three top wire holes 6 is positioned at the same plane with fixing circular hole 7 axes normal.
Below specifically to process a belt pulley, reducing sleeve process and using method are described further:
Belt pulley: belt pulley is cylindrical external diameter 65mm topmost, at upper dark 30 tapped blind holes of processing 12 × M8-6H of belt pulley second end face (seeing from top to bottom), tapped blind hole centre-to-centre spacing topmost cylindrical is 8mm; Regular tap cannot be processed, and can only adopt and lengthen screw tap or screw tap lengthening reducing sleeve.
For this reason, the screw tap that utility model people devises a kind of one lengthens reducing sleeve, and reducing sleeve one end is arranged
square hole and
circular hole, and M4 top wire hole is set at circular hole portion; The other end is arranged
square toes and
cylindrical; Screw tap passes through
square hole and
circular hole position, and to be locked with jackscrew; The other end then passes through
side flat and
outer round surface be connected with tap holder; Find in process, connect one end of screw tap
circular hole and the other end
between cylindrical, the requirement of axiality 0.01mm can be ground by endoporus and be ensured; And
square hole with
the requirement of symmetry 0.05mm between circular hole, due to
square hole be blind hole, can only be processed by the method for electric pulse, and electric pulse processing be difficult to centering
circular hole, so the requirement of its symmetry 0.05mm cannot be guaranteed; Just cannot ensure the requirement of beating of screw tap after such reducing sleeve is connected with regular tap, after making the dark 30 tapped blind hole tapping of 12 × M8-6H in belt pulley, produce the phenomenon of pitch diameter of thread dimension overproof; So utility model people improves design, screw tap is lengthened reducing sleeve and is designed to Split type welded, be namely divided into connecting rod and adapter sleeve, like this
square hole just become through hole, can linear cutter be adopted, can symmetry be ensured.
Split welding screw tap lengthens reducing sleeve one end to be passed through
square hole and
round orifices orientation, and to be locked with the top wire hole of M4; The other end then passes through
side flat and
outer round surface be connected with tap holder; Add man-hour, two ends in adapter sleeve
hole with
between hole, the requirement of axiality φ 0.02 can pass through first cylindrical grinding, then grinds two ends endoporus respectively and indirectly ensures; Middle
square hole with
between circular hole, the requirement of symmetry φ 0.02mm (improve processing mode, improve required precision) can be ensured by Linear cut centering circular hole, and through actual measurement after processing, its symmetry can ensure 0.01mm; Then two parts are carried out assembly welding; Last on cylindrical grinder respectively with in the locating hole of connecting rod and adapter sleeve
internal hole positioning, carrys out cylindrical grinding
cylindrical, protects the requirement of axiality φ 0.02mm; Simultaneously because the material selected is 40Cr, and be quenched into HRC45 ~ 50 after processing; Under so just can ensureing the state that reducing sleeve bears compared with high pulling torque and shock loading in tapping process, not only durable but also be not easy to fracture.
During use, first pass through
square hole and
the circular hole position corresponding to screw tap carry out installation and locate, require that the axiality after ensureing its assembling requires (after assembling, its axiality can reach 0.03mm) by the axiality of reducing sleeve and screw tap self, and carried out fastening with the jackscrew of M4; And then itself and tap holder are installed, finally carry out tapping again; Through carrying out batch tapping examination processing to dark 30 tapped blind holes of 12 × M8-6H in belt pulley, it often overlaps common M8 screw tap can process 12 ~ 15 belt pulleys, and in the rear belt pulley of processing, the dark 30 tapped blind hole central diameter size qualification rates of 12 × M8-6H reach more than 99%, meet design requirement completely.
Claims (4)
1. a split welding screw tap lengthens reducing sleeve, it is characterized in that: comprise connecting rod and adapter sleeve, described connecting rod is by square toes section (1), middle circle shell of column (2), connecting cylinder section (3) three part forms, described adapter sleeve is the cylinder having centre bore, described centre bore is made up of two sections of circular holes and one section of square hole (5), two sections of circular holes are positioned at the both sides of square hole, the circular hole of side is for connecting circular hole (4), the circular hole of opposite side is fixing circular hole (7), the connecting cylinder section (3) of connecting rod is inserted in the connection circular hole (4) of adapter sleeve, and be welded to connect in the end and connecting cylinder section (3) connecting circular hole (4).
2. split welding screw tap according to claim 1 lengthens reducing sleeve, and it is characterized in that the square toes section (1) of described adapter sleeve is provided with locating hole (8), described locating hole (8) is positioned at the center of square toes section.
3. split welding screw tap according to claim 1 lengthens reducing sleeve, it is characterized in that described adapter sleeve being also provided with top wire hole (6), and top wire hole (6) is positioned on one section that offers fixing circular hole (7), install jackscrew in top wire hole (6), the axis of described top wire hole (6) is crossing with the axes normal of fixing circular hole (7).
4. split welding screw tap according to claim 3 lengthens reducing sleeve, it is characterized in that described top wire hole (6) totally three, be evenly distributed on adapter sleeve, and the axis of three top wire holes (6) is positioned at the same plane with fixing circular hole (7) axes normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520495249.4U CN204975581U (en) | 2015-07-09 | 2015-07-09 | Components of a whole that can function independently welding screw tap extension reducing sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520495249.4U CN204975581U (en) | 2015-07-09 | 2015-07-09 | Components of a whole that can function independently welding screw tap extension reducing sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204975581U true CN204975581U (en) | 2016-01-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520495249.4U Active CN204975581U (en) | 2015-07-09 | 2015-07-09 | Components of a whole that can function independently welding screw tap extension reducing sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204975581U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105033367A (en) * | 2015-07-09 | 2015-11-11 | 河北华北柴油机有限责任公司 | Split-welded lengthened screw tap reducing sleeve and machining technology |
-
2015
- 2015-07-09 CN CN201520495249.4U patent/CN204975581U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105033367A (en) * | 2015-07-09 | 2015-11-11 | 河北华北柴油机有限责任公司 | Split-welded lengthened screw tap reducing sleeve and machining technology |
| CN105033367B (en) * | 2015-07-09 | 2018-04-06 | 河北华北柴油机有限责任公司 | Split welding screw tap lengthens reducing sleeve and processing technology |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |