CN206028930U - Screw tap - Google Patents

Screw tap Download PDF

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Publication number
CN206028930U
CN206028930U CN201620994112.8U CN201620994112U CN206028930U CN 206028930 U CN206028930 U CN 206028930U CN 201620994112 U CN201620994112 U CN 201620994112U CN 206028930 U CN206028930 U CN 206028930U
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CN
China
Prior art keywords
screw tap
guide section
screw
tapping
cutting part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201620994112.8U
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Chinese (zh)
Inventor
韩彩锐
刘德俊
杨义军
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.)
Hubei Sanjiang Aerospace Group Hongyang Electromechanical Co Ltd
Original Assignee
Hubei Sanjiang Aerospace Group Hongyang Electromechanical 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
Application filed by Hubei Sanjiang Aerospace Group Hongyang Electromechanical Co Ltd filed Critical Hubei Sanjiang Aerospace Group Hongyang Electromechanical Co Ltd
Priority to CN201620994112.8U priority Critical patent/CN206028930U/en
Application granted granted Critical
Publication of CN206028930U publication Critical patent/CN206028930U/en
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Abstract

The utility model provides a screw tap, screw tap includes: a direction section for the direction, the one end of direction section links to each other with the one end of cutting part, a cutting part for cutting guide thread becomes, the other end of cutting part links to each other with the one end of calibration section, a calibration section for repairing thread form, the other end of calibration section links to each other with force application part, wherein, by direction section direction, by the cutting part is treated the processing screw hole and is carried out the tapping, makes screw tap's axis with wait to process the dead in line of screw hole, avoid the tapping not not just, so, utilize this screw tap to process out one section direction and behind the screw, can carry out the tapping to the screw hole in order to utilize ordinary screw tap, guarantee screw tap's axis and screw hole dead in line, avoid appearing the positive phenomenon of tapping.

Description

A kind of screw tap
Technical field
This utility model belongs to machining technology field, more particularly to a kind of screw tap.
Background technology
Screw tap be processing it is various in, the Common Use Tools of small size screwed hole.Its simple structure, it is easy to use, both can be manual Operation also can work on lathe, using quite varied in produce reality.For undersized female thread, silk Cone is almost unique process tool.
In produce reality, when carrying out threaded hole manually using screw tap and operating, position, Set and Positioning by hole, lead Affect to factors such as set, operating experiences, the not positive phenomenon of threaded hole can occur often, subsequent correction is improper, causes screw thread The overproof probability in hole is very big.Tapping behaviour is carried out especially for the screwed hole in the Large Complicated Structural Component position place of being limited cambered surface Make, because which is not suitable for machine tapping, it is necessary to adopt hand tapping, it is ensured that tool axis and screwed hole dead in line seem ten Divide difficulty, special tooling need to be adopted to ensure crudy.The increase of frock quantity will improve cost of goods manufactured, also to production Management proposes more requirements.In addition, when screw thread bore dia is less, screw tap intensity is relatively low, machine tapping screw tap is easily snapped off, one As also frequently with manual tapping.And crudy hand-manipulated is affected larger by operator's operating experience factor, and process matter There is unstability in amount, once production efficiency was impacted.
Based on this, this utility model provides a kind of screw tap, to solve the problems referred to above of the prior art.
Utility model content
For the problem that prior art is present, this utility model embodiment provides a kind of screw tap, for solving existing skill In art, for solving during threaded hole less to screwed hole or diameter on globoidal structure in prior art, the axle of screw tap Line can not be with screwed hole dead in line, and then the technical problem for causing tapping not positive.
This utility model provides a kind of screw tap, and the screw tap includes:
For the guide section being oriented to, one end of the guide section is connected with one end of cutting cone;
For the cutting part for cutting, guiding screw thread to be formed, the other end of the cutting part and one end phase of calibration segment Even;
For repairing the calibration segment of form of thread, the other end of the calibration segment is connected with force application part.
In such scheme, the length of the guide section is specially 2~3 times of screwed hole bottom diameter to be processed.
In such scheme, the guide section diameterWherein, the d is the screwed hole bottom outlet to be processed Diameter.
In such scheme, the force application part includes:
Connecting portion, one end of the connecting portion are connected with the other end of the calibration segment.
In such scheme, the force application part also includes:
Shank, one end of the shank are connected with the other end of the connecting portion.
In such scheme, the force application part also includes:
Square toes, one end of the square toes are connected with the other end of the shank.
In such scheme, the other end of the guide section is provided with chamfering.
In such scheme, the cutting part is specially cutting cone.
In such scheme, the screw tap also includes:Chip pocket, one end of the chip pocket are flushed with one end of guide section, The other end of the chip pocket is flushed with one end of the connecting portion.
In such scheme, the chip pocket includes four.
This utility model provides a kind of screw tap, and the screw tap includes:For be oriented to guide section, the one of the guide section End is connected with one end of cutting cone;For the cutting part for cutting, guiding screw thread to be formed, the other end of the cutting part and school One end of quasi- section is connected;For repairing the calibration segment of form of thread, the other end of the calibration segment is connected with force application part;Its In, be oriented to by the guide section, treating thread mill drilling by the cutting part carries out tapping so that the axis of the screw tap with The dead in line of the screwed hole to be processed, it is to avoid tapping is not just;Thus, processed after one section of guide thread using the screw tap, Screwed hole can be attacked using regular tap, it is ensured that the axis of screw tap and screwed hole dead in line, it is to avoid tapping occur Not positive phenomenon.
Description of the drawings
Fig. 1 is the overall structure diagram of the screw tap that this utility model embodiment one is provided.
Description of reference numerals:
1- guide sections;2- cutting parts;3- calibration segments;4- connecting portions;5- shanks;6- square toes;7- chip pockets.
Specific embodiment
During threaded hole less to screwed hole or diameter on globoidal structure, in order to the axis for solving screw tap can not be with Screwed hole dead in line, and then the technical problem for causing tapping not positive, this utility model provide a kind of screw tap, the screw tap bag Include:For the guide section being oriented to, one end of the guide section is connected with one end of cutting cone;For cutting, guiding screw thread to be formed Cutting part, the other end of the cutting part is connected with one end of calibration segment;For repairing the calibration segment of form of thread, institute The other end for stating calibration segment is connected with force application part;Wherein, it is oriented to by the guide section, by the cutting part to spiral shell to be processed Pit carries out tapping so that the dead in line of the axis of the screw tap and the screwed hole to be processed, it is to avoid tapping is not just.
The technical solution of the utility model is described in further detail below by drawings and the specific embodiments.
Embodiment one
The present embodiment provides a kind of screw tap, as shown in figure 1, the screw tap includes:Guide section 1, cutting part 2, calibration segment 3;Wherein,
One end of the guide section 1 is connected with one end of cutting part 2, and the guide section 1 is used for being oriented to;Here, because leading Certain length is needed just to play guide effect to section 1, the length specially screwed hole bottom outlet to be processed of the guide section 1 is straight 2~3 times of footpath.The diameter of the guide section 1 is essentially identical with screwed hole bottom diameter to be processed, but there is certain deviation, Shown in relation such as formula (1) between the diameter d1 of guide section 1 and screw thread bore dia d to be processed:
In addition, in order to be beneficial to guide section 1 into screwed hole bottom outlet to be processed, the other end of guide section 1 is additionally provided with chamfering.
The other end of the cutting part 2 is connected with one end of calibration segment 3, and the cutting part 2 is in guide section 1 Treating thread mill drilling under guide effect carries out tapping, and guiding screw thread is formed.Wherein, the cutting part 2 is specifically as follows and cuts Cut cone.
The other end of the calibration segment 3 is connected with force application part, and the calibration segment 3 is for repairing screw thread in tapping process Tooth form.Wherein, the guide section 1, cutting part 2, the material of calibration segment 3 can be high-speed steel or steel alloy.
Further, referring to Fig. 1, the force application part includes:Connecting portion 4, shank 5 and square toes 6;The connecting portion 4 One end is connected with the other end of the calibration segment 3;One end of the shank 5 is connected with the other end of the connecting portion 4;The side 6 one end is connected with the other end of the shank 5.
The connecting portion 4 is specifically as follows cervical region, for the moment of torsion for being applied to shank 5 is transferred to cutting part 2, rises Cross interconnection function.Wherein, the material of the connecting portion 4, shank 5 and square toes 6 can be high-speed steel or steel alloy.
Here, in order in tap tapping, it is to avoid squeeze and hinder thread surface, the screw tap also includes:Chip pocket 7, the appearance One end of bits groove 7 is flushed with one end of guide section 1, and the other end of the chip pocket 7 is flushed with one end of the connecting portion 4.This Sample, can be in the chip pocket 7 flushed with 1 part of guide section when minority chip is dropped forward, and overwhelming majority cutting is backward from neck Discharge in portion.The chip pocket 7 specifically can include four.
In practical application, the guide section 1, cutting part 2, calibration segment 3, connecting portion 4, shank 5, square toes 6 and chip pocket 7 Can be formed with overall processing, also can be formed by the die hob transformation of the way.
In specific works, the screw tap that can be provided first with this utility model treats thread mill drilling carries out tapping, looks for Plus thread bottom outlet, processes one section of guide thread, at least needs 2~3 button screw threads, then using regular tap along the guide thread Treating thread mill drilling carries out tapping so that the dead in line of the axis of the screw tap and the screwed hole to be processed, it is to avoid go out The not positive phenomenon of existing tapping.
The screw tap that the present embodiment is provided, is processed after one section of guide thread using guide section, you can to utilize regular tap Screwed hole is attacked, it is ensured that the axis of screw tap and screwed hole dead in line, it is to avoid the not positive phenomenon of tapping occur.
Embodiment two
In the present embodiment, when the servo cabin housing unit that parts to be processed is certain model, need in servo cabin housing Tapping on fiberglass heat shield, and limited by section structure, lack working place in nacelle, spiral shell need to be attacked from outside nacelle inward Stricture of vagina, but from nacelle mounting screw from inside to outside, axiality has high demands, therefore the screw tap that can be provided using embodiment one is from external arc On face, direct tapping, specific as follows:
As shown in figure 1, the screw tap includes:Guide section 1, cutting part 2, calibration segment 3;Wherein,
One end of the guide section 1 is connected with one end of cutting part 2, and the guide section 1 is used for processing guide thread;This In, because guide section 1 needs certain length just play guide effect, the length of the guide section 1 is specially screw thread to be processed 2~3 times of bottom hole bore dia.The diameter of the guide section 1 is essentially identical with screw thread bore dia to be processed, but exists certain inclined Difference, shown in the relation such as formula (1) between the diameter d1 of guide section 1 and screwed hole bottom diameter d to be processed:
In addition, in order to be beneficial to guide section 1 into screwed hole bottom outlet to be processed, the other end of guide section 1 is additionally provided with chamfering.
The other end of the cutting part 2 is connected with one end of calibration segment 3, and the cutting part 2 is in guide section 1 Thread mill drilling is treated under guiding guide effect carries out tapping;The cutting part 2 can specifically include cutting cone.
The other end of the calibration segment 3 is connected with force application part, and the calibration segment 3 is for repairing screw thread in tapping process Tooth form.Wherein, the guide section 1, cutting part 2, the material of calibration segment 3 can be high-speed steel, steel alloy.
Further, referring to Fig. 1, the force application part includes:Connecting portion 4, shank 5 and square toes 6;The connecting portion 4 One end is connected with the other end of the calibration segment 3;One end of the shank 5 is connected with the other end of the connecting portion 4;The side 6 one end is connected with the other end of the shank 5.
The connecting portion 4 is specifically as follows cervical region, for the moment of torsion for being applied to shank 5 is transferred to cutting part 2, rises Cross interconnection function.Wherein, the material of the connecting portion 4, shank 5 and square toes 6 can be high-speed steel, steel alloy.
Here, in order in tap tapping, it is to avoid squeeze and hinder thread surface, the screw tap also includes:Chip pocket 7, the appearance One end of bits groove 7 is flushed with one end of guide section 1, and the other end of the chip pocket 7 is flushed with one end of the connecting portion 4.This Sample, can improve thread surface quality in the chip pocket 7 flushed with 1 part of guide section when a small amount of chip is dropped forward.It is described Chip pocket 7 specifically can include four.
In practical application, the guide section 1, cutting part 2, calibration segment 3, connecting portion 4, shank 5, square toes 6 and chip pocket 7 Can be formed with overall processing, also can be formed by the die hob transformation of the way.
In specific works, the screw tap that can be provided first with embodiment one enters to the exterior arc surface of servo cabin housing unit Row tapping, centering thread Pilot hole process 3 button guide threads, then using regular tap along the guide thread to be processed Screwed hole carries out tapping so that the dead in line of the axis of the screw tap and the screwed hole to be processed, it is to avoid tapping occur not Positive phenomenon.
The screw tap that the present embodiment is provided, is oriented to using guide section after processing one section of guide thread on arc surface, you can To be attacked to screwed hole using regular tap, it is ensured that the axis of screw tap and screwed hole dead in line, it is to avoid just tapping occurring not Phenomenon.
Embodiment three
In the present embodiment, when component to be processed is the screwed hole to be processed that bottom diameter is 2mm, screw tap intensity is relatively low, Frangibility during tapping, therefore the screw tap that can be provided using embodiment one be treated thread mill drilling and carry out tapping, it is specific as follows:
As shown in figure 1, the screw tap includes:Guide section 1, cutting part 2, calibration segment 3;Wherein,
One end of the guide section 1 is connected with one end of cutting part 2, and the guide section 1 is used for processing guide thread;This In, because guide section 1 needs certain length just play guide effect, the length of the guide section 1 is specially screw thread to be processed 2~3 times of bottom hole bore dia.The diameter of the guide section 1 is essentially identical with screw thread bore dia to be processed, but exists certain inclined Difference, shown in the relation such as formula (1) between the diameter d1 of guide section 1 and screwed hole bottom diameter d to be processed:
In addition, in order to be beneficial to guide section 1 into screwed hole bottom outlet to be processed, the other end of guide section 1 is additionally provided with chamfering.
The other end of the cutting part 2 is connected with one end of calibration segment 3, and the cutting part 2 is in guide section 1 Treating thread mill drilling under guide effect carries out tapping;The cutting part 2 can specifically include cutting cone.
The other end of the calibration segment 3 is connected with force application part, and the calibration segment 3 is for repairing screw thread in tapping process Tooth form.Wherein, the guide section 1, cutting part 2, the material of calibration segment 3 can be high-speed steel or steel alloy.
Further, referring to Fig. 1, the force application part includes:Connecting portion 4, shank 5 and square toes 6;The connecting portion 4 One end is connected with the other end of the calibration segment 3;One end of the shank 5 is connected with the other end of the connecting portion 4;The side 6 one end is connected with the other end of the shank 5.
The connecting portion 4 is specifically as follows cervical region, for the moment of torsion for being applied to shank 5 is transferred to cutting part 2, rises Cross interconnection function.Wherein, the material of the connecting portion 4, shank 5 and square toes 6 can be high-speed steel or steel alloy.
Here, in order in tap tapping, it is to avoid squeeze and hinder thread surface, the screw tap also includes:Chip pocket 7, the appearance One end of bits groove 7 is flushed with one end of guide section 1, and the other end of the chip pocket 7 is flushed with one end of the connecting portion 4.This Sample, can be in the chip pocket 7 flushed with 1 part of guide section when minority chip is dropped forward, and overwhelming majority cutting is backward from neck Discharge in portion.The chip pocket 7 specifically can include four.
In practical application, the guide section 1, cutting part 2, calibration segment 3, connecting portion 4, shank 5, square toes 6 and chip pocket 7 Can be formed with overall processing, also can be formed by the die hob transformation of the way.
In specific works, the screw tap that can be provided first with embodiment one treats thread mill drilling carries out tapping, centering Thread Pilot hole, processes 3 button guide threads, then treats thread mill drilling using regular tap along the guide thread and is attacked Silk so that the dead in line of the axis of the screw tap and the screwed hole to be processed, it is to avoid the not positive phenomenon of tapping occur.
The screw tap that the present embodiment is provided, is oriented to using guide section and is processed after one section of guide thread, you can common to utilize Screw tap is attacked to screwed hole, it is ensured that the axis of screw tap and screwed hole dead in line, it is to avoid the not positive phenomenon of tapping occur.
The above, preferred embodiment only of the present utility model is not intended to limit protection of the present utility model Scope, all any modification, equivalent and improvement made within spirit of the present utility model and principle etc., should be included in Within protection domain of the present utility model.

Claims (10)

1. a kind of screw tap, it is characterised in that the screw tap includes:
For the guide section being oriented to, one end of the guide section is connected with one end of cutting part;
For the cutting part for cutting, guiding screw thread to be formed, the other end of the cutting part is connected with one end of calibration segment;
For repairing the calibration segment of form of thread, the other end of the calibration segment is connected with force application part.
2. screw tap as claimed in claim 1, it is characterised in that the length of the guide section is specially screwed hole bottom outlet to be processed 2~3 times of diameter.
3. screw tap as claimed in claim 2, it is characterised in that the guide section diameterWherein, the d is institute State the diameter of screwed hole bottom outlet to be processed.
4. screw tap as claimed in claim 1, it is characterised in that the force application part includes:
Connecting portion, one end of the connecting portion are connected with the other end of the calibration segment.
5. screw tap as claimed in claim 4, it is characterised in that the force application part also includes:
Shank, one end of the shank are connected with the other end of the connecting portion.
6. screw tap as claimed in claim 5, it is characterised in that the force application part also includes:
Square toes, one end of the square toes are connected with the other end of the shank.
7. screw tap as claimed in claim 1, it is characterised in that the other end of the guide section is provided with chamfering.
8. screw tap as claimed in claim 1, it is characterised in that the cutting part is specially cutting cone.
9. screw tap as claimed in claim 4, it is characterised in that the screw tap also includes:Chip pocket, one end of the chip pocket Flush with one end of guide section, the other end of the chip pocket is flushed with one end of the connecting portion.
10. screw tap as claimed in claim 9, it is characterised in that the chip pocket includes four.
CN201620994112.8U 2016-08-30 2016-08-30 Screw tap Active CN206028930U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620994112.8U CN206028930U (en) 2016-08-30 2016-08-30 Screw tap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620994112.8U CN206028930U (en) 2016-08-30 2016-08-30 Screw tap

Publications (1)

Publication Number Publication Date
CN206028930U true CN206028930U (en) 2017-03-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
CN (1) CN206028930U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106270827A (en) * 2016-08-30 2017-01-04 湖北三江航天红阳机电有限公司 A kind of screw tap
CN110340463A (en) * 2019-08-19 2019-10-18 丹阳河工工具有限公司 A kind of thread forming tap of easy chip removal
CN114505550A (en) * 2022-03-15 2022-05-17 江阴创博机械制造有限公司 High-efficiency thread-returning screw tap

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106270827A (en) * 2016-08-30 2017-01-04 湖北三江航天红阳机电有限公司 A kind of screw tap
CN110340463A (en) * 2019-08-19 2019-10-18 丹阳河工工具有限公司 A kind of thread forming tap of easy chip removal
CN114505550A (en) * 2022-03-15 2022-05-17 江阴创博机械制造有限公司 High-efficiency thread-returning screw tap

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