CN105033367B - Split welding screw tap lengthens reducing sleeve and processing technology - Google Patents
Split welding screw tap lengthens reducing sleeve and processing technology Download PDFInfo
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- CN105033367B CN105033367B CN201510400342.7A CN201510400342A CN105033367B CN 105033367 B CN105033367 B CN 105033367B CN 201510400342 A CN201510400342 A CN 201510400342A CN 105033367 B CN105033367 B CN 105033367B
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- hole
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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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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a kind of split welding screw tap to lengthen reducing sleeve and processing technology, reducing sleeve includes connecting rod and adapter sleeve, the connecting rod is by square toes section, middle circle shell of column, connecting cylinder section three parts form, the adapter sleeve is the cylinder for being provided with centre bore, the centre bore is made up of two sections of circular holes and one section of square hole, two sections of circular holes are located at the both sides of square hole, the circular hole of side is connected circular hole, the circular hole of opposite side is fixed circular hole, in the connected circular hole of the connecting cylinder section insertion adapter sleeve of connecting rod, and it is welded to connect in the end of connected circular hole and connecting cylinder section.Processing technology of the present invention uses parts processing, then the mode welded together again is made, square hole working is changed into through hole from blind hole, using linear cutter, it ensure that the symmetry between square hole and fixed circular hole, so as to ensure that the bounce requirement of screw tap, the pitch diameter of thread size for processing it is not overproof, meets design requirement.
Description
Technical field
The present invention relates to one kind to be machined aid, and in particular to a kind of split welding screw tap lengthens reducing sleeve and added
Work technique.
Background technology
At present, deep 30 tapped blind holes of 12 × M8-6H are processed in the production process of belt pulley, it is necessary in belt pulley, this
A little tapped blind holes are located at second level end face, and there is a certain distance second level end face distance the top end face, and these screw threads are blind
Radial dimension is smaller between hole and the top angle head cylindrical, it is impossible to meets the revolution size of tap holder, can only use special silk
Tapping or the method using screw tap extension rod are bored, during using special screw tap tapping, 6~8 belts can only be processed by often covering screw tap
Wheel, screw tap is costly (a set of 127 yuan of screw tap), and is easy to fracture；And screw tap extension rod is used to coordinate common M8 screw taps to attack
Silk, due to the machining accuracy problem of screw tap extension rod；It is higher to process rear thread central diameter dimension overproof rate, has reached more than 20%,
Substantial amounts of material and manufacturing cost are not only wasted, and have impact on the normal manufacturing schedule of belt pulley.
The content of the invention
The technical problem to be solved in the invention is to provide a kind of split welding screw tap and lengthens reducing sleeve and processing technology, matches somebody with somebody
Close regular tap and process size-limited screwed hole, solve tripping problems during tap tapping, make the pitch diameter of thread after tapping
Size is not overproof, meets production requirement.
In order to solve the above technical problems, the technical solution adopted in the present invention is：
A kind of split welding screw tap lengthens reducing sleeve, including connecting rod and adapter sleeve, and the connecting rod is by square toes section, centre
Cylindrical section, connecting cylinder section three parts composition, the adapter sleeve is the cylinder for being provided with centre bore, and the centre bore is by two sections of circles
Hole and one section of square hole composition, two sections of circular holes are located at the both sides of square hole, and the circular hole of side is connected circular hole, and the circular hole of opposite side is solid
Determine circular hole, the connecting cylinder section of connecting rod is inserted in the connected circular hole of adapter sleeve, and in the end of connected circular hole and connecting cylinder
Duan Jinhang is welded to connect；Top wire hole is additionally provided with the adapter sleeve, and top wire hole pushes up positioned at opening up on one section of fixed circular hole
Jackscrew is installed, the axis of the top wire hole is vertical with the axis of fixed circular hole and intersects in silk hole.
Further, the square toes section of the adapter sleeve is provided with positioning hole, and the positioning hole is located at the center of square toes section.
Further, the top wire hole totally three, are evenly distributed on adapter sleeve, and the axis position of three top wire holes
In in the same plane vertical with fixed round hole axial.
A kind of split welding screw tap lengthens reducing sleeve, and its processing technology comprises the following steps：
1) connecting rod is processed：Round steel is fixed on lathe chuck, first car square toes section, middle circle shell of column, connecting cylinder section
It is cylindrical, then in milling machine upper milling position head section four directions, positioning hole finally is bored in square toes section, positioning hole is finish reamed by reamer, is protected
Demonstrate,prove that middle circle shell of column, connecting cylinder section be cylindrical and positioning hole axiality 0.01mm；
2) adapter sleeve is processed：Round steel is fixed on lathe chuck, first car adapter sleeve is cylindrical, then bores connected circular hole, fixation
Circular hole, the square hole of centre is then processed, leaves the size surplus for repairing school, it is same between connected circular hole and fixed circular hole to ensure to repair school
Axle degree 0.02, repairing school side's formula use, first mill adapter sleeve is cylindrical, then grinds connected circular hole respectively with fixed circular hole to ensure；Pass through line
Middle square hole is cut to ensure symmetry 0.02mm between square hole and fixed circular hole；
3) by connecting rod connecting cylinder section, largely insertion adapter sleeve is fixed in circular hole, then will in the end of connected circular hole
Connecting cylinder section welds together with adapter sleeve；
4) screw tap being welded is lengthened into reducing sleeve on cylindrical grinder respectively with the positioning hole and adapter sleeve of connecting rod
Fixation circular hole positioned, mill connecting rod is cylindrical, protects the cylindrical axiality 0.02mm with fixed circular hole of connecting rod；Then use
Grinding method repaiies school connecting rod square toes, ensure square toes and connecting rod it is cylindrical between symmetry 0.02mm.
Further, the round steel material is 40Cr, and one-piece machine member is quenched into HRC45~50；To ensure that reducing sleeve is being attacked
It is not only durable but also do not allow frangibility in the state of bearing high torque and shock loading during silk.
By adopting the above-described technical solution, the technological progress that the present invention obtains is：Screw tap of the present invention lengthens reducing sleeve and adopted
With parts processing, the mode then welded together again is made, and square hole working is changed into through hole from blind hole, using linear cutter,
The symmetry between square hole and fixed circular hole is ensure that, so as to ensure that the bounce requirement of screw tap, makes the pitch diameter of thread of its processing
Size is not overproof, meets design requirement.
Brief description of the drawings
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 cross section structure diagram of the present invention；
Wherein：1st, square toes section, 2, middle circle shell of column, 3, connecting cylinder section, 4, connected circular hole, 5, square hole, 6, top wire hole, 7,
Fixed circular hole, 8, positioning hole.
Embodiment
The present invention is described in further details with reference to embodiment：
The present invention provides a kind of split welding screw tap and lengthens reducing sleeve, for solving to be limited by workpieces processing appearance and size,
The problem of normal length screw tap can not meet to require, lengthened and covered by the switching, screw tap bar can extended, in that context it may be convenient to add
The screwed hole that work is limited by workpieces processing appearance and size, while solve the tripping problems of screw tap, make the screwed hole central diameter essence of processing
Degree is high, not overproof, meets design requirement.
As shown in Figures 1 to 3, the present invention is by connecting rod and adapter sleeve two parts by being welded, and the connecting rod is by side
Head section 1, middle circle shell of column 2, the three parts of connecting cylinder section 3 composition, square toes section 1 and middle circle shell of column 2 is used for and tap holder
Connection, connecting cylinder section 3 are used to insert adapter sleeve and be welded as a whole with adapter sleeve.The adapter sleeve is the circle for being provided with centre bore
Cylinder, described centre bore are made up of two sections of circular holes and one section of square hole 5, and two sections of circular holes are located at the both sides of square hole, the circular hole of side
For connected circular hole 4, welded after being connected for the connecting cylinder section 3 with connecting rod, the circular hole of opposite side is fixed circular hole 7, is used for
Fixed screw tap.During welding, the connecting cylinder section 3 of connecting rod is inserted in the connected circular hole 4 of adapter sleeve, by the end of connected circular hole 4
It is welded to connect with connecting cylinder section 3, welding manner uses melting welding.
For the ease of positioning, conveniently fine grinding is carried out to reducing sleeve repaiies school, and the square toes section 1 of the adapter sleeve is provided with positioning hole 8,
The positioning hole 8 is located at the center of square toes section 1.
In order to be firmly fixed to screw tap in the square hole 5 of adapter sleeve and fixed circular hole 7, it is additionally provided with the adapter sleeve
Top wire hole 6, and top wire hole 6 installs jackscrew positioned at opening up on one section of fixed circular hole 7 in top wire hole 6, the top wire hole 6
Axis is vertical with the axis of fixed circular hole 7 and intersects；The top wire hole 6 totally three, is evenly distributed on adapter sleeve, and three
The axis of top wire hole 6 is located in the same plane vertical with the fixed axis of circular hole 7.
In order to ensure the reliability of the present invention, design requirement can be met, to connecting rod, the processing technology of adapter sleeve
And gyp's skill of repairing after the welding of connecting rod adapter sleeve has made detailed design.It is that a kind of split welding screw tap of the present invention adds below
The processing technology of long reducing sleeve, its processing technology comprise the following steps：
1) connecting rod is processed：Round steel is fixed on lathe chuck, first car square toes section, middle circle shell of column, connecting cylinder section
It is cylindrical, then in milling machine upper milling position head section four directions, positioning hole finally is bored in square toes section, positioning hole is finish reamed by reamer, is protected
Demonstrate,prove that middle circle shell of column, connecting cylinder section be cylindrical and positioning hole axiality 0.01mm；
2) adapter sleeve is processed：Round steel is fixed on lathe chuck, first car adapter sleeve is cylindrical, then bores connected circular hole, fixation
Circular hole, the square hole of centre is then processed, leaves the size surplus for repairing school, it is same between connected circular hole and fixed circular hole to ensure to repair school
Axle degree 0.02, repairing school side's formula use, first mill adapter sleeve is cylindrical, then grinds connected circular hole respectively with fixed circular hole to ensure；Pass through line
Middle square hole is cut to ensure symmetry 0.02mm between square hole and fixed circular hole；
3) by connecting rod connecting cylinder section, largely insertion adapter sleeve is fixed in circular hole, then will in the end of connected circular hole
Connecting cylinder section welds together with adapter sleeve；
4) screw tap being welded is lengthened into reducing sleeve on cylindrical grinder respectively with the positioning hole and adapter sleeve of connecting rod
Fixation circular hole positioned, mill connecting rod is cylindrical, protects the cylindrical axiality 0.02mm with fixed circular hole of connecting rod；Then use
Grinding method repaiies school connecting rod square toes, ensure square toes and connecting rod it is cylindrical between symmetry 0.02mm.
In order to ensure the quality of reducing sleeve and robustness, the round steel material uses 40Cr, will be whole after processing
Body workpiece quenching is to HRC45~50；In the state of high torque and shock loading are born to ensure reducing sleeve in tapping process,
Not only it is durable but also do not allow frangibility.
For more detailed explanation process and beneficial effects of the present invention, below with specifically one belt of processing
Exemplified by wheel, further instruction：
Belt pulley：The cylindrical external diameter 65mm in belt pulley the top, 12 are processed in belt pulley second end face (seeing from top to bottom)
Deep 30 tapped blind holes of × M8-6H, it is 8mm that tapped blind hole centre-to-centre spacing is cylindrical topmost；Regular tap can not be processed, and can only use and add
Long screw tap or screw tap lengthen reducing sleeve.
Therefore, inventor, which devises a kind of integral screw tap, lengthens reducing sleeve, reducing sleeve one end is set Side
Hole andCircular hole, and circular hole portion set M4 top wire holes；The other end is set Square toes andIt is cylindrical；Screw tap passes throughSquare hole andCircular hole positioned, and entered with jackscrew
Row is locked；The other end then passes throughSide it is flat andOuter round surface be attached with tap holder；
Found in process, connect one end of screw tapCircular hole and the other endAxiality between cylindrical
0.01mm requirement can be ensured by endoporus mill；AndSquare hole withSymmetry between circular hole
0.05mm requirement, due toSquare hole be blind hole, can only be processed by the method for electric pulse, and electric pulse
Processing is difficult to carry out centering again Circular hole, so its symmetry 0.05mm requirement can not be guaranteed；So turn
Female connector can not just ensure the bounce requirement of screw tap after being connected with regular tap, make deep 30 tapped blind holes of 12 × M8-6H in belt pulley
The phenomenon of pitch diameter of thread dimension overproof is produced after tapping；Then inventor improves design, and screw tap lengthening switching is arranged
Split type welded is counted into, that is, is divided into connecting rod and adapter sleeve, soSquare hole just into through hole, line can be used
Cutting processing, it is ensured that symmetry.
Split welding screw tap lengthens reducing sleeve one end and passed throughSquare hole andCircular hole determine
Position, and be locked with M4 top wire hole；The other end then passes throughSide it is flat andOuter round surface with
Tap holder is attached；During processing, both ends in adapter sleeveHole with Axiality between hole
Then φ 0.02 requirement can grind both ends endoporus indirectly to ensure respectively by first cylindrical grinding；It is middleSquare hole with
WithSymmetry φ 0.02mm (improving processing mode, improve required precision) requirement can between circular hole
To ensure by wire cutting centering circular hole, 0.01mm can be ensured through actual measurement, its symmetry after processing；Then by two
Part carries out a group weldering；Finally respectively with the positioning hole and adapter sleeve of connecting rod on cylindrical grinderInternal hole positioning,
Carry out cylindrical grinding It is cylindrical, protect axiality φ 0.02mm requirement；Simultaneously because the material selected is 40Cr, and process
After be quenched into HRC45~50；So ensure that reducing sleeve bears the shape of high torque and shock loading in tapping process
It is not only durable but also do not allow frangibility under state.
In use, pass through firstSquare hole andCircular hole it is corresponding to screw tap
Position carry out installation positioning, by the axiality of reducing sleeve and screw tap itself requirement come ensure its assembling after axiality requirement
(its axiality can reach 0.03mm after assembling), and fastened with M4 jackscrew；Then again by itself and tap holder
Installed, finally carry out tapping again；Add by carrying out batch tapping examination to deep 30 tapped blind holes of 12 × M8-6H in belt pulley
Work, it, which often covers common M8 screw taps, can process 12~15 belt pulleys, and deep 30 screw threads of 12 × M8-6H in belt pulley after processing
Blind hole central diameter size qualification rate has reached more than 99%, fully meets design requirement.
Claims (4)
1. a kind of split welding screw tap lengthens reducing sleeve, it is characterised in that：Including connecting rod and adapter sleeve, the connecting rod is by side
Head section（1）, middle circle shell of column（2）, connecting cylinder section（3）Three parts form, and the adapter sleeve is the cylinder for being provided with centre bore,
The centre bore is by two sections of circular holes and one section of square hole（5）Composition, two sections of circular holes are located at the both sides of square hole, and the circular hole of side is connection
Circular hole（4）, the circular hole of opposite side is fixed circular hole（7）, the connecting cylinder section of connecting rod（3）Insert the connected circular hole of adapter sleeve
（4）In, and in connected circular hole（4）End and connecting cylinder section（3）It is welded to connect, jackscrew is additionally provided with the adapter sleeve
Hole（6）, and top wire hole（6）Positioned at opening up fixed circular hole（7）One section on, top wire hole（6）Middle installation jackscrew, the top wire hole
（6）Axis and fixed circular hole（7）Axis it is vertical and intersecting, the square toes section of the connecting rod（1）Provided with positioning hole（8）, institute
State positioning hole（8）Positioned at the center of square toes section.
2. split welding screw tap according to claim 1 lengthens reducing sleeve, it is characterised in that the top wire hole（6）Totally three
It is individual, it is evenly distributed on adapter sleeve, and three top wire holes（6）Axis be located at and fixed circular hole（7）Vertical same of axis
In plane.
3. a kind of split welding screw tap as claimed in claim 1 lengthens the processing technology of reducing sleeve, its processing technology include with
Lower step：
1）Connecting rod is processed：Round steel is fixed on lathe chuck, first car square toes section is cylindrical, middle circle shell of column is cylindrical, connection circle
Shell of column is cylindrical, then in milling machine upper milling position head section four directions, finally bores positioning hole in square toes section, positioning hole carries out essence by reamer
Hinge, ensure that middle circle shell of column, connecting cylinder section be cylindrical and positioning hole axiality 0.01mm；
2）Adapter sleeve is processed：Round steel is fixed on lathe chuck, first car adapter sleeve is cylindrical, then bores connected circular hole, fixed circular hole,
Then the square hole of centre is processed, leaves the size surplus for repairing school, repaiies school to ensure axiality between connected circular hole and fixed circular hole
0.02, repairing school side's formula use, first mill adapter sleeve is cylindrical, then grinds connected circular hole respectively with fixed circular hole to ensure；Pass through wire cutting
Middle square hole ensures symmetry 0.02mm between square hole and fixed circular hole；
3）By connecting rod connecting cylinder section, largely insertion adapter sleeve is fixed in circular hole, then will be connected in the end of connected circular hole
Cylindrical section welds together with adapter sleeve；
4）The screw tap being welded is lengthened into reducing sleeve consolidating with the positioning hole of connecting rod and adapter sleeve respectively on cylindrical grinder
Determine circular hole to be positioned, mill connecting rod is cylindrical, ensures the cylindrical mm of axiality 0.02 with fixed circular hole of connecting rod；Then use
Grinding method repaiies school connecting rod square toes, ensure square toes and connecting rod it is cylindrical between symmetry 0.02mm.
4. a kind of split welding screw tap according to claim 3 lengthens the processing technology of reducing sleeve, it is characterised in that described
Round steel material is 40Cr, and one-piece machine member is quenched into HRC45~50；Born with to ensure reducing sleeve in tapping process high torque and
It is not only durable but also do not allow frangibility in the state of shock loading.
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 CN105033367A (en) | 2015-11-11 |
| CN105033367B true CN105033367B (en) | 2018-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Families Citing this family (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 |
| CN108386442B (en) * | 2018-02-01 | 2019-07-26 | 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 | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE549483A (en) * | ||||
| GB101467A (en) * | 1916-07-03 | 1916-09-21 | Robert Bauney Housley | Improvements in and relating to Screw-cutting Taps. |
| CN202780085U (en) * | 2012-07-27 | 2013-03-13 | 大连飞达重型机床制造有限公司 | Tapping clamp |
| CN203265808U (en) * | 2013-05-14 | 2013-11-06 | 王爱学 | Tapping clamp |
| 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 |
-
2015
- 2015-07-09 CN CN201510400342.7A patent/CN105033367B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE549483A (en) * | ||||
| GB101467A (en) * | 1916-07-03 | 1916-09-21 | Robert Bauney Housley | Improvements in and relating to Screw-cutting Taps. |
| CN202780085U (en) * | 2012-07-27 | 2013-03-13 | 大连飞达重型机床制造有限公司 | Tapping clamp |
| CN203265808U (en) * | 2013-05-14 | 2013-11-06 | 王爱学 | Tapping clamp |
| 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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| Publication number | Publication date |
|---|---|
| CN105033367A (en) | 2015-11-11 |
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