CN202398907U - Threaded extrusion tap with circular top and circular bottom - Google Patents

Threaded extrusion tap with circular top and circular bottom Download PDF

Info

Publication number
CN202398907U
CN202398907U CN2011205463637U CN201120546363U CN202398907U CN 202398907 U CN202398907 U CN 202398907U CN 2011205463637 U CN2011205463637 U CN 2011205463637U CN 201120546363 U CN201120546363 U CN 201120546363U CN 202398907 U CN202398907 U CN 202398907U
Authority
CN
China
Prior art keywords
tap
tapping
section
thread
circular
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.)
Expired - Lifetime
Application number
CN2011205463637U
Other languages
Chinese (zh)
Inventor
龚兴
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.)
XIAMEN YUANXING PRECISION TOOL CO Ltd
Original Assignee
XIAMEN YUANXING PRECISION TOOL 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 XIAMEN YUANXING PRECISION TOOL CO Ltd filed Critical XIAMEN YUANXING PRECISION TOOL CO Ltd
Priority to CN2011205463637U priority Critical patent/CN202398907U/en
Application granted granted Critical
Publication of CN202398907U publication Critical patent/CN202398907U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Connection Of Plates (AREA)

Abstract

The utility model discloses a threaded extrusion tap, in particular to a threaded extrusion tap with a circular top and a circular bottom, which comprises a tap main body. A tapping section is arranged at the front end of the tap main body, and tapping threads are disposed on the tapping section. The threaded extrusion tap is characterized in that the section of the tapping threads is wavy, crests and valleys of the wavy section are arc-shaped, the radius of each crest is R1, and the radius of each valley is R2. The end surface of the threads of the tap has a circular top and a circular bottom, accordingly, stress concentration points in an original structure are eliminated, stress is dispersed during machining, torque carried by the tap is decomposed, the difficult problem that an existing tap is easy to be adhered with materials and easy to be broken is solved, the service life of the tap is prolonged, and work efficiency is enhanced.

Description

Dome round bottom screw thread thread forming tap
Technical field
The utility model is a kind of screw thread thread forming tap, particularly a kind of dome round bottom screw thread thread forming tap.
Background technology
Existing screw thread thread forming tap; Its tapping partly is the flat screw thread of flat-top, and the section of this screw thread is the trapezoidal shape (see figure 3), and there are two cusps 6 respectively in trapezoidal top and bottom; These cusps have constituted stress concentration point; Because the existence of stress concentration point causes screw tap to be prone to the sizing easy fracture, has shortened the service life of screw tap.
Summary of the invention
The purpose of the utility model is to have the defective that the flat screw thread thread forming tap of flat-top is prone to the sizing easy fracture now in order to overcome, and inventing a kind of thread profile is the screw thread thread forming tap of dome round bottom.
The purpose of the utility model realizes as follows: said dome round bottom screw thread thread forming tap; Comprise the screw tap main body, the front end of screw tap main body is the tapping section, and the tapping section is provided with tapping thread; It is characterized in that: the section waviness of said tapping thread; Corrugated crest and trough are circular arc, and the radius of crest is R1, and the radius of trough is R2.
The good effect of the utility model is following: because the end face of screw tap screw thread is the screw thread of dome round bottom; So eliminated the stress concentration point in the original structure; Make the stress that adds man-hour obtain disperseing, make the moment of torsion that bears obtain decomposing, solved the difficult problem of the easy sizing easy fracture of screw tap; Improve the service life of screw tap, promoted operating efficiency.
Description of drawings
Fig. 1 is the utility model appearance assumption diagram
Fig. 2 is the utility model tapping thread cross-section structure
Fig. 3 is the tapping thread cross-section structure of existing screw tap
Among the figure: 1 screw tap main body, 2 tapping sections, 3 tapping threads
4 crests, 5 troughs, 6 cusps
The specific embodiment
Shown in Figure 2 like Fig. 1, said dome round bottom screw thread thread forming tap comprises screw tap main body 1; The front end of screw tap main body 1 is a tapping section 2; Silk section 2 is provided with tapping thread 3, it is characterized in that: the section waviness of said tapping thread 3, and corrugated crest 4 is circular arc with trough 5; The radius of crest 4 is R1, and the radius of trough 5 is R2.
Because the end face of screw tap screw thread is the screw thread of dome round bottom,, make the stress that adds man-hour obtain disperseing so eliminated the stress concentration point in the original structure; Make the moment of torsion that bears obtain decomposing; Solve the difficult problem of the easy sizing easy fracture of screw tap, in the service life of having improved screw tap, promoted operating efficiency.

Claims (1)

1. dome round bottom screw thread thread forming tap; Comprise the screw tap main body, the front end of screw tap main body is the tapping section, and the silk section is provided with tapping thread; It is characterized in that: the section waviness of said tapping thread; Corrugated crest and trough are circular arc, and the radius of crest is R1, and the radius of trough is R2.
CN2011205463637U 2011-12-23 2011-12-23 Threaded extrusion tap with circular top and circular bottom Expired - Lifetime CN202398907U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011205463637U CN202398907U (en) 2011-12-23 2011-12-23 Threaded extrusion tap with circular top and circular bottom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011205463637U CN202398907U (en) 2011-12-23 2011-12-23 Threaded extrusion tap with circular top and circular bottom

Publications (1)

Publication Number Publication Date
CN202398907U true CN202398907U (en) 2012-08-29

Family

ID=46696583

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011205463637U Expired - Lifetime CN202398907U (en) 2011-12-23 2011-12-23 Threaded extrusion tap with circular top and circular bottom

Country Status (1)

Country Link
CN (1) CN202398907U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114851081A (en) * 2022-05-30 2022-08-05 四川英诺航空科技有限公司 Diamond roller of round-bottom grinding wheel with rolled circular top and method for rolling round-bottom grinding wheel with rolled circular top

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114851081A (en) * 2022-05-30 2022-08-05 四川英诺航空科技有限公司 Diamond roller of round-bottom grinding wheel with rolled circular top and method for rolling round-bottom grinding wheel with rolled circular top
CN114851081B (en) * 2022-05-30 2024-03-26 四川英诺航空科技有限公司 Diamond roller for rolling round bottom grinding wheel of round bottom and method for rolling round bottom grinding wheel of round bottom

Similar Documents

Publication Publication Date Title
CN202398907U (en) Threaded extrusion tap with circular top and circular bottom
CN203862301U (en) Tooth roller with double-tooth structure
CN201088410Y (en) Multiple level cup capable of adjusting size
CN202537666U (en) Novel medical scissors
CN202461801U (en) Ultrasonic welding gun head
CN201843975U (en) Hollow flexible gear for harmonic speed reducer
CN203585171U (en) Wave-shaped damping spring
CN203906501U (en) Concrete screw
CN202381490U (en) Screw with decorative head
CN201363351Y (en) Screw bolt for building
CN203714780U (en) Flour conveying device for continuously feeding two production lines
CN201763923U (en) Bevel gear
CN201852507U (en) Condenser pipe with aluminum alloy outer teeth
CN205272531U (en) Screw rod set
CN202370967U (en) Screw with flat end face
CN204921610U (en) Levogyration circle tooth nut
CN102900768A (en) Oil inlet side for elastic metal plastic tile
CN202156863U (en) Escalator pedal reinforced rib
CN201625816U (en) Grinding hob
CN202370966U (en) Long screw with screw cap
CN205036824U (en) Be applied to gear assembly of speed reducer
CN202286870U (en) Lighting brush
CN202544231U (en) Diagonal draw bar for structural steel building
CN202391893U (en) Bolt with expansion sleeve
CN206017412U (en) Flange nut

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Threaded extrusion tap with circular top and circular bottom

Effective date of registration: 20131217

Granted publication date: 20120829

Pledgee: Jimei Xiamen District Finance Company limited by guarantee

Pledgor: Xiamen Yuanxing Precision Tool Co., Ltd.

Registration number: 2013990000988

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20150119

Granted publication date: 20120829

Pledgee: Jimei Xiamen District Finance Company limited by guarantee

Pledgor: Xiamen Yuanxing Precision Tool Co., Ltd.

Registration number: 2013990000988

PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Threaded extrusion tap with circular top and circular bottom

Effective date of registration: 20150120

Granted publication date: 20120829

Pledgee: Jimei Xiamen District Finance Company limited by guarantee

Pledgor: Xiamen Yuanxing Precision Tool Co., Ltd.

Registration number: 2015990000049

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20160218

Granted publication date: 20120829

Pledgee: Jimei Xiamen District Finance Company limited by guarantee

Pledgor: Xiamen Yuanxing Precision Tool Co., Ltd.

Registration number: 2015990000049

PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Threaded extrusion tap with circular top and circular bottom

Effective date of registration: 20160218

Granted publication date: 20120829

Pledgee: Jimei Xiamen District Finance Company limited by guarantee

Pledgor: Xiamen Yuanxing Precision Tool Co., Ltd.

Registration number: 2016990000124

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20170929

Granted publication date: 20120829

Pledgee: Jimei Xiamen District Finance Company limited by guarantee

Pledgor: Xiamen Yuanxing Precision Tool Co., Ltd.

Registration number: 2016990000124

PC01 Cancellation of the registration of the contract for pledge of patent right
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20120829