CN203751454U - Blind hole tapering device - Google Patents
Blind hole tapering device Download PDFInfo
- Publication number
- CN203751454U CN203751454U CN201420161408.2U CN201420161408U CN203751454U CN 203751454 U CN203751454 U CN 203751454U CN 201420161408 U CN201420161408 U CN 201420161408U CN 203751454 U CN203751454 U CN 203751454U
- Authority
- CN
- China
- Prior art keywords
- screw tap
- screw
- hole
- seat
- endoporus
- 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 - Fee Related
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- Drilling Tools (AREA)
Abstract
The utility model provides a blind hole tapering device. According to the technical scheme, the blind hole tapering device comprises a screw tap, a screw, a flat key, a screw tap seat, a bearing, a short shaft, a jacket, a tension spring, a tension spring seat, a transition sleeve, a pressure spring, a long shaft and a pin, wherein the screw tap is arranged at the left end of an inner hole of the screw tap seat and fixed by the screw, the bearing is arranged at the bottom end of the inner hole of the screw tap seat, the short shaft is arranged on an inner hole of the bearing, the left end of the jacket is movably matched with the screw tap seat through the flat key, the length of the flat key is arranged to be equal to the depth of a screw hole to be processed, the right end of the jacket is matched with a Morse's taper of the transition sleeve, the tension spring seat is disposed at the right end of an inner hole of the jacket, the left end of the tension spring is fixedly connected with the short shaft, the right end of the tension spring is fixedly connected with the tension spring seat, the long shaft which is movably matched with the right end of an inner hole of the transition sleeve is arranged at the right end of the inner hole of the transition sleeve, a through hole is formed in an outer circle of the right end of the transition sleeve, an open long slot is formed in the long shaft, the pin is fixedly matched with the through hole and movably matched with the open long slot, and the pressure spring is installed between a boss of the inner hole of the transition sleeve and the left end surface of the long shaft in a pressing mode. The blind hole tapering device has the advantages that blind hole tapering qualities are guaranteed, and blind hole tapering efficiency is improved.
Description
Technical field
The utility model relates to a kind of blind hole chasing bar, belongs to machining Work tool technical field.
Background technology
In mechanical processing process, adopt die hob or thread forming tap machining internal thread, be a kind of very general processing method, but processing blind hole screw thread just acquires a certain degree of difficulty, be mainly that blind hole be cannot see, the degree of depth is difficult for grasping, the screw tap that easily fractures, so just causes Tapping Quality and efficiency to be all difficult to improve.
Summary of the invention
The purpose of this utility model is just to provide a kind of blind hole chasing bar, for addressing the above problem.
The technical solution of the utility model is: a kind of blind hole chasing bar, comprise screw tap, screw, flat key, screw tap seat, bearing, minor axis, chuck, extension spring, spring base, spacer shell, stage clip, major axis and pin, screw tap seat endoporus left end arranges screw tap, and located by screw, screw tap seat endoporus bottom is provided with bearing, brearing bore is provided with minor axis, chuck left end is joined by flat key and the work of screw tap seat, flat key length is made as screw hole depth to be processed, chuck right-hand member coordinates with spacer shell Morse's taper, chuck endoporus right-hand member is provided with spring base, extension spring left end and minor axis are affixed, right-hand member and spring base are affixed, spacer shell endoporus right-hand member is provided with the major axis of living and joining with it, spacer shell right-hand member cylindrical is provided with through hole, major axis is provided with opening elongated slot, pin is joined admittedly with described through hole, join with the work of described opening elongated slot, stage clip is fitted between spacer shell endoporus boss and major axis left side.
The beneficial effects of the utility model are: ensure blind hole Tapping Quality, improve blind hole tapping efficiency.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail, known with reference to accompanying drawing 1, a kind of blind hole chasing bar, comprises screw tap 1, screw 2, flat key 3, screw tap seat 4, bearing 5, minor axis 6, chuck 7, extension spring 8, spring base 9, spacer shell 10, stage clip 11, major axis 12 and pin 13, screw tap seat 4 endoporus left ends arrange screw tap 1, and located by screw 2, screw tap seat 4 endoporus bottoms are provided with bearing 5, bearing 5 endoporus are provided with minor axis 6, chuck 7 left ends are lived and are joined with screw tap seat 4 by flat key 3, the length of flat key 3 is made as screw hole depth to be processed, chuck 7 right-hand members coordinate with spacer shell 10 Morse's tapers, chuck 7 endoporus right-hand members are provided with spring base 9, and extension spring 8 left ends and minor axis 6 are affixed, and right-hand member and spring base 9 are affixed, spacer shell 10 endoporus right-hand members are provided with the major axis 12 of living and joining with it, spacer shell 10 right-hand member cylindricals are provided with through hole, and major axis 12 is provided with opening elongated slot, and pin 13 is joined admittedly with described through hole, join with the work of described opening elongated slot, stage clip 11 is fitted between spacer shell 10 endoporus boss and major axis 12 left sides.When tapping, major axis 12 is connected with drill press spindle, major axis 12 forwards, drive screw tap 1 to rotate, in the time depressing drilling machine operating grip, major axis 12 moves down, screw tap 1 is shot workpiece under the operating mode of pressurization, have certain mandatory, thereby screw tap 1 can not skid in workpiece aperture, because stage clip 11 compresses, pin 13 is along moving on the opening elongated slot on major axis 12, this plays floating action to axial, can avoid starting to shoot time, overexert and the screw tap 1 that fractures, when screw tap 1 is cut after workpiece, screw tap 1 relies on its rotation effect and continues feeding, now drilling machine operating grip is moved on to the upper initial point of its scale of depth, stage clip 11 restores to the original state, screw tap 1 still continues forward to cut workpiece, extension spring 8 is but stretched gradually along with moving down of screw tap 1, it plays and pins down screw tap seat 4 and compensating action, in the time that desired depth is arrived in screw tap 1 tapping, because the length of flat key 3 equals required threaded screw hole depth, now that flat key 3 is thrown off with the internal keyway of chuck 7 just, cause screw tap 1 stall, and major axis 12, chuck 7 and extension spring 8 are still being rotated in the forward, now should pull drilling machine two-direction switch, major axis 12 is counter-rotated, and depress drilling machine operating grip, flat key 3 is entered again in the keyway of chuck 7, drive on screw tap 1 and move and exit workpiece, on drilling machine operating grip is rapid, move to former upper initial point, complete whole blind hole tapping procedures.
Claims (1)
1. a blind hole chasing bar, comprise screw tap (1), screw (2), flat key (3), screw tap seat (4), bearing (5), minor axis (6), chuck (7), extension spring (8), spring base (9), spacer shell (10), stage clip (11), major axis (12) and pin (13), it is characterized in that: screw tap seat (4) endoporus left end arranges screw tap (1), and located by screw (2), screw tap seat (4) endoporus bottom is provided with bearing (5), bearing (5) endoporus is provided with minor axis (6), chuck (7) left end is lived and is joined with screw tap seat (4) by flat key (3), the length of flat key (3) is made as screw hole depth to be processed, chuck (7) right-hand member coordinates with spacer shell (10) Morse's taper, chuck (7) endoporus right-hand member is provided with spring base (9), extension spring (8) left end and minor axis (6) are affixed, right-hand member and spring base (9) are affixed, spacer shell (10) endoporus right-hand member is provided with the major axis (12) of living and joining with it, spacer shell (10) right-hand member cylindrical is provided with through hole, major axis (12) is provided with opening elongated slot, pin (13) is joined admittedly with described through hole, join with the work of described opening elongated slot, stage clip (11) is fitted between spacer shell (10) endoporus boss and major axis (12) left side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420161408.2U CN203751454U (en) | 2014-04-04 | 2014-04-04 | Blind hole tapering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420161408.2U CN203751454U (en) | 2014-04-04 | 2014-04-04 | Blind hole tapering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203751454U true CN203751454U (en) | 2014-08-06 |
Family
ID=51246765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420161408.2U Expired - Fee Related CN203751454U (en) | 2014-04-04 | 2014-04-04 | Blind hole tapering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203751454U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105345172A (en) * | 2015-12-07 | 2016-02-24 | 中国南方航空工业(集团)有限公司 | Method for machining internal thread of blind hole without tool withdrawal groove |
-
2014
- 2014-04-04 CN CN201420161408.2U patent/CN203751454U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105345172A (en) * | 2015-12-07 | 2016-02-24 | 中国南方航空工业(集团)有限公司 | Method for machining internal thread of blind hole without tool withdrawal groove |
| CN105345172B (en) * | 2015-12-07 | 2017-10-24 | 中国南方航空工业(集团)有限公司 | Female thread machining method without escape blind hole |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20190404 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |