CN105033367A - Split-welded lengthened screw tap reducing sleeve and machining technology - Google Patents
Split-welded lengthened screw tap reducing sleeve and machining technology Download PDFInfo
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- CN105033367A CN105033367A CN201510400342.7A CN201510400342A CN105033367A CN 105033367 A CN105033367 A CN 105033367A CN 201510400342 A CN201510400342 A CN 201510400342A CN 105033367 A CN105033367 A CN 105033367A
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- Prior art keywords
- hole
- circular hole
- connecting rod
- adapter sleeve
- section
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/44—Equipment or accessories specially designed for machines or devices for thread cutting
- B23G1/46—Equipment or accessories specially designed for machines or devices for thread cutting for holding the threading tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/48—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools threading tools
- B23P15/52—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools threading tools taps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a split-welded lengthened screw tap reducing sleeve and a machining technology. The reducing sleeve comprises a connecting rod and a connecting sleeve, the connecting rod is composed of a square head section, a middle cylinder section and a connecting cylinder section, and the connecting sleeve is a cylinder with a center hole. The center hole is composed of two round holes and a square hole, the two round holes are located in the two sides of the square hole, the round hole in one side is a round connecting hole, and the round hole in the other side is a round fixing hole. The connecting cylinder section of the connecting rod is inserted into the round connecting hole in the connecting sleeve, and the end of the round connecting hole and the connecting cylinder section are welded. According to the machining technology, split machining is adopted, then welding is performed, and therefore the reducing sleeve is obtained. The machined square hole is changed from a blind hole into a through hole, linear cutting machining is adopted, the symmetry degree between the square hole and the round fixing hole is guaranteed, in this way, the bouncing requirement of a screw tap is met, it is avoided that the pitch diameter of machined threads is not out of tolerance, and designing requirements are met.
Description
Technical field
The present invention relates to a kind of machining aid, be specifically related to a kind of split welding screw tap and lengthen reducing sleeve and processing technology.
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.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of split welding screw tap and lengthen reducing sleeve and processing technology, 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 solution adopted in the present invention 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; 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, 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 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.
A kind of split welding screw tap lengthens reducing sleeve, and its processing technology comprises the following steps:
1) connecting rod processing: round steel is fixed on lathe chuck, first car square toes section, middle circle shell of column, connecting cylinder section cylindrical, then in milling machine upper milling position head section four directions, finally bore locating hole in square toes section, locating hole is finish reamed by reamer, ensures middle circle shell of column, connecting cylinder section cylindrical and locating hole axiality 0.01mm;
2) adapter sleeve processing: round steel is fixed on lathe chuck, first car adapter sleeve cylindrical, bore again and connect circular hole, fixing circular hole, then middle square hole is processed, leave the size surplus repairing school, repair school to ensure to connect axiality 0.02 between circular hole and fixing circular hole, repair school side's formula and adopt first mill adapter sleeve cylindrical, then mill connection circular hole and fixing circular hole ensure respectively; Symmetry 0.02mm between square hole and fixing circular hole is ensured by the square hole in the middle of Linear cut;
3) connecting rod connecting cylinder section major part being inserted adapter sleeve fixes in circular hole, then connecting cylinder section and adapter sleeve is welded together in the end connecting circular hole;
4) screw tap welded is lengthened reducing sleeve to position with the fixing circular hole of the locating hole of connecting rod and adapter sleeve respectively on cylindrical grinder, mill connecting rod cylindrical, protects the axiality 0.02mm of connecting rod cylindrical and fixing circular hole; Then adopt grinding method to repair school connecting rod square toes, ensure the symmetry 0.02mm between square toes and connecting rod cylindrical.
Further, described round steel material is 40Cr, and one-piece machine member is quenched into HRC45 ~ 50; Under 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.
Owing to have employed technique scheme, the technological progress that the present invention obtains is: screw tap of the present invention lengthens reducing sleeve and adopts parts processing, and then the mode welded together is made, square hole working becomes through hole from blind hole, adopt linear cutter, ensure that the symmetry between square hole 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 connecting rod structural representation of the present invention;
Fig. 2 is connecting jacket structure schematic diagram of the present invention;
Fig. 3 is sectional structure schematic diagram of the present invention;
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 present invention is described in further details:
The invention provides a kind of split welding screw tap and lengthen 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 present invention 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.
In order to ensure reliability of the present invention, can meet design requirement, detailed design has been done to the gyp's skill of repairing after the processing technology of connecting rod, adapter sleeve and the welding of connecting rod adapter sleeve.Be below the processing technology that a kind of split welding of the present invention screw tap lengthens reducing sleeve, its processing technology comprises the following steps:
1) connecting rod processing: round steel is fixed on lathe chuck, first car square toes section, middle circle shell of column, connecting cylinder section cylindrical, then in milling machine upper milling position head section four directions, finally bore locating hole in square toes section, locating hole is finish reamed by reamer, ensures middle circle shell of column, connecting cylinder section cylindrical and locating hole axiality 0.01mm;
2) adapter sleeve processing: round steel is fixed on lathe chuck, first car adapter sleeve cylindrical, bore again and connect circular hole, fixing circular hole, then middle square hole is processed, leave the size surplus repairing school, repair school to ensure to connect axiality 0.02 between circular hole and fixing circular hole, repair school side's formula and adopt first mill adapter sleeve cylindrical, then mill connection circular hole and fixing circular hole ensure respectively; Symmetry 0.02mm between square hole and fixing circular hole is ensured by the square hole in the middle of Linear cut;
3) connecting rod connecting cylinder section major part being inserted adapter sleeve fixes in circular hole, then connecting cylinder section and adapter sleeve is welded together in the end connecting circular hole;
4) screw tap welded is lengthened reducing sleeve to position with the fixing circular hole of the locating hole of connecting rod and adapter sleeve respectively on cylindrical grinder, mill connecting rod cylindrical, protects the axiality 0.02mm of connecting rod cylindrical and fixing circular hole; Then adopt grinding method to repair school connecting rod square toes, ensure the symmetry 0.02mm between square toes and connecting rod cylindrical.
In order to ensure quality and the robustness of reducing sleeve, described round steel material adopts 40Cr, after processing, one-piece machine member is quenched into HRC45 ~ 50; Under 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.
In order to more detailed explanation process and beneficial effect of the present invention, below specifically to process a belt pulley, further instruction:
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 inventor has devised 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 inventor 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 (5)
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), 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), in top wire hole (6), jackscrew is installed, the axis of described top wire hole (6) is crossing with the axes normal of fixing circular hole (7).
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 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.
4. a kind of split welding screw tap according to claim 1 lengthens reducing sleeve, and its processing technology comprises the following steps:
1) connecting rod processing: round steel is fixed on lathe chuck, first car square toes section, middle circle shell of column, connecting cylinder section cylindrical, then in milling machine upper milling position head section four directions, finally bore locating hole in square toes section, locating hole is finish reamed by reamer, ensures middle circle shell of column, connecting cylinder section cylindrical and locating hole axiality 0.01mm;
2) adapter sleeve processing: round steel is fixed on lathe chuck, first car adapter sleeve cylindrical, bore again and connect circular hole, fixing circular hole, then middle square hole is processed, leave the size surplus repairing school, repair school to ensure to connect axiality 0.02 between circular hole and fixing circular hole, repair school side's formula and adopt first mill adapter sleeve cylindrical, then mill connection circular hole and fixing circular hole ensure respectively; Symmetry 0.02mm between square hole and fixing circular hole is ensured by the square hole in the middle of Linear cut;
3) connecting rod connecting cylinder section major part being inserted adapter sleeve fixes in circular hole, then connecting cylinder section and adapter sleeve is welded together in the end connecting circular hole;
4) screw tap welded is lengthened reducing sleeve to position with the fixing circular hole of the locating hole of connecting rod and adapter sleeve respectively on cylindrical grinder, mill connecting rod cylindrical, protects the axiality 0.02mm of connecting rod cylindrical and fixing circular hole; Then adopt grinding method to repair school connecting rod square toes, ensure the symmetry 0.02mm between square toes and connecting rod cylindrical.
5. processing technology according to claim 4, it is characterized in that described round steel material is 40Cr, one-piece machine member is quenched into HRC45 ~ 50; Under 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510400342.7A CN105033367B (en) | 2015-07-09 | 2015-07-09 | Split welding screw tap lengthens reducing sleeve and processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510400342.7A CN105033367B (en) | 2015-07-09 | 2015-07-09 | Split welding screw tap lengthens reducing sleeve and processing technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105033367A true CN105033367A (en) | 2015-11-11 |
| CN105033367B CN105033367B (en) | 2018-04-06 |
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| CN201510400342.7A Active CN105033367B (en) | 2015-07-09 | 2015-07-09 | Split welding screw tap lengthens reducing sleeve and processing technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223907A (en) * | 2018-01-16 | 2018-06-29 | 江苏华东正大空调设备有限公司 | A kind of valve drive shaft and its processing method |
| CN108386442A (en) * | 2018-02-01 | 2018-08-10 | 西安航天动力研究所 | A kind of depth blind hole inner spline axis and its processing method |
| CN108581391A (en) * | 2018-05-10 | 2018-09-28 | 河南工钻业有限公司 | The processing method of slot grinding after a kind of groove milling of machine tap elder generation |
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| CN204122868U (en) * | 2014-09-09 | 2015-01-28 | 深圳市康铨机电有限公司 | A kind of tap holder |
| CN204975581U (en) * | 2015-07-09 | 2016-01-20 | 河北华北柴油机有限责任公司 | Components of a whole that can function independently welding screw tap extension reducing sleeve |
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2015
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| BE549483A (en) * | ||||
| GB101467A (en) * | 1916-07-03 | 1916-09-21 | Robert Bauney Housley | Improvements in and relating to Screw-cutting Taps. |
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| CN203265808U (en) * | 2013-05-14 | 2013-11-06 | 王爱学 | Tapping clamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223907A (en) * | 2018-01-16 | 2018-06-29 | 江苏华东正大空调设备有限公司 | A kind of valve drive shaft and its processing method |
| CN108386442A (en) * | 2018-02-01 | 2018-08-10 | 西安航天动力研究所 | A kind of depth blind hole inner spline axis and its processing method |
| CN108581391A (en) * | 2018-05-10 | 2018-09-28 | 河南工钻业有限公司 | The processing method of slot grinding after a kind of groove milling of machine tap elder generation |
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| Publication number | Publication date |
|---|---|
| CN105033367B (en) | 2018-04-06 |
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