CN202137477U - Overload protection device for screw tap - Google Patents
Overload protection device for screw tap Download PDFInfo
- Publication number
- CN202137477U CN202137477U CN201120180750U CN201120180750U CN202137477U CN 202137477 U CN202137477 U CN 202137477U CN 201120180750 U CN201120180750 U CN 201120180750U CN 201120180750 U CN201120180750 U CN 201120180750U CN 202137477 U CN202137477 U CN 202137477U
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- China
- Prior art keywords
- tap
- screw tap
- knife
- handle
- square hole
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- 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
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Abstract
The utility model discloses an overload protection device for a screw tap, which comprises a hilt. A transmission sleeve is slidably sleeved on the outside of the hilt, the conical bottom of the hilt extends out from the bottom surface of the transmission sleeve, a kidney-shaped groove is arranged on the hilt, a bolt penetrates through the transmission sleeve into the kidney-shaped groove of the hilt so as to connect the transmission sleeve with the hilt, a nut sleeve is sleeved on the outside of the transmission sleeve, a screw tap chuck is mounted in the nut sleeve and positioned below the transmission sleeve, a square hole is arranged in the middle of the screw tap chuck, adjusting screws are respectively mounted on two inner sides of the screw tap chuck and positioned above the upper end of the middle square hole, steel balls are respectively disposed on inner sides of the adjusting screws, compression springs sleeved on the adjusting screws are abutted onto the steel balls exactly, a plurality of small holes are uniformly arranged on the periphery of the upper end surface of the screw tap chuck, a plurality of strip-shaped holes are respectively disposed at the lower end of the transmission sleeve and are exactly opposite to the small holes, and spherical columns which are jacked by the compression springs are respectively mounted in the strip-shaped holes. The overload protection device can automatically protect the screw tap, prevents the screw tap from being broken, and reduces production cost.
Description
Technical field
The utility model mainly is a kind of screw tap overload protection arrangement.
Background technology
A kind of gasoline engine cylinder body end face cylinder cap that our company produces connects the M9 screwed hole, attacks deeply 92, and aperture counterbore φ 10 dark 55; The tapping of the work in-process heart; Because screw thread is very dark in the hole, tapping length is long again, situation about being fractureed through regular meeting's generation screw tap moment of torsion increase; And taking out trouble of screw tap, screw tap is got to come out and is just caused the entire cylinder body to be scrapped.Existing gasoline engine processing screw tap mostly adopts the import screw tap, and screw tap fractures and adds that cylinder block scraps, and makes production cost increase.
The utility model content
The utility model technical problem to be solved provides a kind of screw tap overload protection arrangement, and its structural design is ingenious rationally, can under the situation that the screw tap moment of torsion increases, protect screw tap automatically, avoids screw tap to fracture, and reduces production costs.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of screw tap overload protection arrangement includes handle of a knife, the tapered structure in the bottom of said handle of a knife, and outer slip of said handle of a knife is with a drive sleeve, and the conical lower portion of said handle of a knife is stretched out from the drive sleeve bottom surface; Have a waist type groove on the said handle of a knife, have bolt to pass in the waist type groove that drive sleeve extend into handle of a knife drive sleeve is connected with handle of a knife; Said drive sleeve is with a nut sleeve outward, through locking nut drive sleeve and nut sleeve is fastenedly connected; The below that is positioned at drive sleeve in the said nut sleeve is equipped with a tap chuck through promoting ball bearing; Have a square hole in the middle of the said tap chuck; The conical lower portion of said handle of a knife faces the center of square hole; The upper end diameter of said square hole is littler than lower end diameter, and square hole upper end diameter size matches with screw tap; The both sides of square hole upper end are separately installed with adjustment screw in the middle of being positioned in the said tap chuck, and the inboard of adjustment screw has steel ball respectively, is with the compression spring on the said adjustment screw, and the compression spring just in time withstands on the steel ball; The periphery of said tap chuck upper surface on average has several apertures; Several apertures that the lower end of said drive sleeve faces the tap chuck upper surface have several bar holes; Be separately installed with the ball head column that is withstood by holddown spring in said several bar holes, the following of said ball head column corrects on the aperture that withstands on the tap chuck upper surface.
The aperture of the aperture of said tap chuck upper surface is slightly littler than the diameter of ball head column.
The screw tap square toes are arranged in the square hole in the middle of the tap chuck; The conical lower portion of handle of a knife faces the screw tap square toes in the square hole; The steel ball of both sides, tap chuck interior square hole upper end is clamping screw tap square toes just in time.
To be milled with waist type groove be for can the up-down adjustment handle of a knife and the axial location of drive sleeve in handle of a knife upper bolt junction in the utility model, makes handle of a knife lower end pyramidal structure withstand the position suitable of screw tap square toes in the square hole.Steel ball plays clamping action to the screw tap square toes, and the size of chucking power is adjusted the pressure of compression spring and realized through adjustment screw.
The mode of operation of the utility model is:
Machine tool chief axis drives the handle of a knife rotation; Drive the drive sleeve rotation through bolt, under normal moment of torsion, the bulb of several balls headpin is pressed in several apertures of tap chuck upper surface (aperture is slightly littler than bulb diameter) all the time; It can be stirred tap chuck and rotate together; The screw tap square toes are arranged in the tap chuck square hole, can drive the screw tap rotation, carry out tapping.At the bottom of screw tap is run into the hole or during other foreign matters; Moment of torsion increases, and ball head column just slides on the end face of tap chuck, and the collar of tap chuck and thrust ball bearing is stopped the rotation; And the loose ring of thrust ball bearing continues rotation with nut sleeve, drive sleeve; Skidding occurs, at this moment restart the machine tool chief axis counter-rotating, make screw tap withdraw from workpiece.During adjustment tap chuck breakaway torque, the releasable lock jack panel is controlled the pressure of holddown spring with adjusting nut sleeve distance up and down, thus the moment of torsion that change ball head column and tap chuck skid.Adjustment finishes, and locking nut is screwed, and nut sleeve is locked.
The utility model has the advantages that:
The utility model structural design is ingenious rationally, can under the situation that the screw tap moment of torsion increases, protect screw tap automatically, avoids screw tap to fracture, and reduces production costs.
Description of drawings
Fig. 1 is the cutaway view of the utility model.
Fig. 2 is the utility model E-E cutaway view.
Fig. 3 is the utility model F-F cutaway view.
Fig. 4 is the structural representation of waist type groove on the utility model handle of a knife.
The specific embodiment
Referring to Fig. 1,2,3,4, a kind of screw tap overload protection arrangement includes handle of a knife 1, the tapered structure in the bottom of said handle of a knife 1, and said handle of a knife 1 outer the slip is with a drive sleeve 3, and the conical lower portion of said handle of a knife 1 is stretched out from drive sleeve 3 bottom surfaces; Have a waist type groove 13 on the said handle of a knife 1, have bolt 2 to pass in the waist type groove 13 that drive sleeve 3 extend into handle of a knife drive sleeve 3 is connected with handle of a knife 1; The said drive sleeve 3 outer nut sleeve 12 that are with are fastenedly connected drive sleeve 3 and nut sleeve 12 through locking nut 4; The below that is positioned at drive sleeve 3 in the said nut sleeve 12 is equipped with a tap chuck 7 through promoting ball bearing 11; Have a square hole 14 in the middle of the said tap chuck 7; The conical lower portion of said handle of a knife 1 faces the center of square hole; The upper end diameter of said square hole 14 is littler than lower end diameter, and square hole 14 upper end diameter size matches with screw tap; The both sides of square hole 14 upper ends are separately installed with adjustment screw 10 in the middle of being positioned in the said tap chuck, and the inboard of adjustment screw 10 has steel ball 8 respectively, are with compression spring 9 on the said adjustment screw 10, and compression spring 9 just in time withstands on the steel ball 8; The periphery of said tap chuck 7 upper surfaces on average has several apertures; Several apertures that the lower end of said drive sleeve 3 faces tap chuck 7 upper surfaces have several bar holes; Be separately installed with the ball head column 6 that is withstood by holddown spring 5 in said several bar holes, the following of said ball head column 6 corrects on the aperture that withstands on tap chuck 7 upper surfaces.
The aperture of the aperture of said tap chuck 7 upper surfaces is slightly littler than the diameter of ball head column 6.
The screw tap square toes are arranged in the square hole in the middle of the tap chuck; The conical lower portion of handle of a knife 1 faces the screw tap square toes in the square hole; The steel ball 8 of both sides, tap chuck 7 interior square hole upper end is clamping screw tap square toes just in time.
Claims (3)
1. a screw tap overload protection arrangement includes handle of a knife, and the tapered structure in the bottom of said handle of a knife is characterized in that: the outer slip of said handle of a knife is with a drive sleeve, and the conical lower portion of said handle of a knife is stretched out from the drive sleeve bottom surface; Have a waist type groove on the said handle of a knife, have bolt to pass in the waist type groove that drive sleeve extend into handle of a knife drive sleeve is connected with handle of a knife; Said drive sleeve is with a nut sleeve outward, through locking nut drive sleeve and nut sleeve is fastenedly connected; The below that is positioned at drive sleeve in the said nut sleeve is equipped with a tap chuck through promoting ball bearing; Have a square hole in the middle of the said tap chuck; The conical lower portion of said handle of a knife faces the center of square hole; The upper end diameter of said square hole is littler than lower end diameter, and square hole upper end diameter size matches with screw tap; The both sides of square hole upper end are separately installed with adjustment screw in the middle of being positioned in the said tap chuck, and the inboard of adjustment screw has steel ball respectively, is with the compression spring on the said adjustment screw, and the compression spring just in time withstands on the steel ball; The periphery of said tap chuck upper surface on average has several apertures; Several apertures that the lower end of said drive sleeve faces the tap chuck upper surface have several bar holes; Be separately installed with the ball head column that is withstood by holddown spring in said several bar holes, the following of said ball head column corrects on the aperture that withstands on the tap chuck upper surface.
2. a kind of screw tap overload protection arrangement according to claim 1 is characterized in that: the aperture of the aperture of said tap chuck upper surface is slightly littler than the diameter of ball head column.
3. a kind of screw tap overload protection arrangement according to claim 1 is characterized in that: the screw tap square toes are arranged in the square hole in the middle of the tap chuck; The conical lower portion of handle of a knife faces the screw tap square toes in the square hole; The steel ball of both sides, tap chuck interior square hole upper end is clamping screw tap square toes just in time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120180750U CN202137477U (en) | 2011-05-31 | 2011-05-31 | Overload protection device for screw tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120180750U CN202137477U (en) | 2011-05-31 | 2011-05-31 | Overload protection device for screw tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202137477U true CN202137477U (en) | 2012-02-08 |
Family
ID=45548555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120180750U Expired - Lifetime CN202137477U (en) | 2011-05-31 | 2011-05-31 | Overload protection device for screw tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202137477U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189302A (en) * | 2011-05-31 | 2011-09-21 | 滁州兴达机电有限公司 | Screw tap overload protection device |
| CN103357975A (en) * | 2013-07-08 | 2013-10-23 | 安徽全柴锦天机械有限公司 | Tapping limit device for drill machine |
| CN110465790A (en) * | 2019-07-31 | 2019-11-19 | 无锡诚石轴承有限公司 | The automatic trap capping machine of bearing takes lid grinding tool |
-
2011
- 2011-05-31 CN CN201120180750U patent/CN202137477U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189302A (en) * | 2011-05-31 | 2011-09-21 | 滁州兴达机电有限公司 | Screw tap overload protection device |
| CN102189302B (en) * | 2011-05-31 | 2013-04-03 | 滁州兴达机电有限公司 | Screw tap overload protection device |
| CN103357975A (en) * | 2013-07-08 | 2013-10-23 | 安徽全柴锦天机械有限公司 | Tapping limit device for drill machine |
| CN110465790A (en) * | 2019-07-31 | 2019-11-19 | 无锡诚石轴承有限公司 | The automatic trap capping machine of bearing takes lid grinding tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120208 Effective date of abandoning: 20130403 |
|
| RGAV | Abandon patent right to avoid regrant |