CN2684978Y - Non-blade thermoplastic drill - Google Patents
Non-blade thermoplastic drill Download PDFInfo
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- CN2684978Y CN2684978Y CN 200420021380 CN200420021380U CN2684978Y CN 2684978 Y CN2684978 Y CN 2684978Y CN 200420021380 CN200420021380 CN 200420021380 CN 200420021380 U CN200420021380 U CN 200420021380U CN 2684978 Y CN2684978 Y CN 2684978Y
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- drill
- cone angle
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Abstract
The utility model discloses a non-blade thermoplastic drill, comprising a holding section and an active section. The non-blade thermoplastic drill is characterized in that: the active section comprises a conical friction section provided with a first cone angle, a conical extruding section provided with a second cone angle, a cylindrical scale burnishing section, and a coining disc; the front end of the friction section is a spherical surface whose radius is 0. 5mm-1. 5mm; the first cone angle is 85 degrees-95 degrees, and the second cone angle is 35 degrees-45 degrees. The non-blade thermoplastic drill has the advantages that the non-blade thermoplastic drill can drill bottom holes which are respectively provided with an upper and a lower boss and respectively have enough length-diameter ratio on a thin metal workpiece, and the bottom holes are used for the threading and the reliable screwed connection; chips cannot be generated during the working process, and the cutting fluid doesn't need, which is helpful for environmental protection; the compatibility of the size of each hole is good, the surface quality is good, and the check before the threading doesn't need; the metallographic structure of the material near the holes is obviously improved, and the hardness of the hole surface is apparently higher than that of the base material; as the cutting blade isn't existed on the drill, accordingly, the life time of the drill is long, and the working efficiency is high.
Description
Technical field
The utility model relates to a kind of drilling tool, especially relates to a kind of no sword thermoplastic drilling tool, and it is mainly used in and gets out the bottom outlet that needs thread tapping on thin metal parts.
Background technology
Cutting Process is mainly adopted in the processing in the hole on the existing various metal works, is main manufacturing process with drilling especially, and promptly adopting has the cutting drill head by the machining pore-forming.These drill bits mainly comprise gripping section and active section, on active section, have various cutting edges, drive the drill bit rotation in process medium power source by transmission mechanism, make the cutting edge incision workpiece on the drill bit form needed boring, the workpiece material that is cut off is discharged with the form of smear metal, the diameter in the hole that is processed is identical with the diameter of drill bit active section, and the length in hole is no more than the thickness of workpiece.The advantage of this drill bit is to process the very big hole of draw ratio on thick workpiece, but also exist weak point, need on the interconnective thin metal parts at some, can only process the length hole identical with workpiece, the draw ratio in hole is very little, can not be used for tapping and be threaded, so also need other attaching parts just can interconnect between the thin metal parts.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of at above-mentioned prior art present situation can get out the no sword thermoplastic drilling tool that has enough draw ratios, can be used in the bottom outlet of tapping on thin metal parts.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of no sword thermoplastic drilling tool, comprise gripping section and active section, described active section is made up of the conical friction section with first cone angle, the tapered squeezing section with second cone angle, columniform scale polishing section and shaping dish, the front end of described friction section is a sphere that radius is 0.5mm～1.5mm, described first cone angle is 85 degree～95 degree, and described second cone angle is 35 degree～45 degree.
Described first cone angle is preferably 90 degree.
Described second cone angle is preferably 39 degree.
The draw ratio of described scale polishing section should be greater than 1.5, and the diameter of described scale polishing section can be determined according to the diameter of required bottom outlet.
The lower surface of described shaping dish can be smooth flat, and the diameter of described shaping dish is 1.7 times of described scale polishing section diameter.
The lower surface of described shaping dish also can be face cutter, and the diameter of described shaping dish is 1.7 times of described scale polishing section diameter.
Compared with prior art, advantage of the present utility model be can get out on the thin metal parts have on the bottom outlet of lower convex platform and enough draw ratios to be used for tapping and to be threaded reliably; Chipless produces in the process, need not cutting fluid, help environmental protection; The dimensional uniformity in hole is good, and surface quality is good, need not check before the tapping; Near the hole metallographic structure of material be improved significantly, hole surface hardness is apparently higher than mother metal hardness; Do not have cutting edge on the drilling tool, so the life-span of drilling tool is long, the working (machining) efficiency height; The front end of friction section is selected little sphere, because little sphere is that face contacts with the actual contact situation of workpiece under certain pressure, therefore can guarantee bigger initial contact friction face, can produce frictional heat fast is rapidly heated the contact site, the shaping dish can be to the metal material finishing moulding of upper end, hole, the smooth flat structure can be carried out pressing repeatedly to upper end, hole metal under pressure, make it to form ganoid boss, the face cutter structure can be with the metal mill off of hole upper end, thereby processes flat surface in the upper end, hole.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 carries out the process schematic diagram of thermoplastic boring for using drilling tool of the present utility model.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Embodiment one: as shown in Figure 1, a kind of no sword thermoplastic drilling tool is made of gripping section 1 and active section 2, active section 2 by the conical friction section 3 with first cone angle=85 degree, have second cone angle beta=35 degree tapered squeezing section 4, have diameter D
1Columniform scale polishing section 5 and have diameter D
2Shaping dish 6 form, the front end of friction section 3 is the sphere 7 that a radius R is 0.5mm, the length L of scale polishing section 5 and diameter D
1Ratio L/D
1＞1.5, the lower surface of shaping dish 6 is a smooth flat, the diameter D of shaping dish 6
2Diameter D for scale polishing section 5
11.7 times, the diameter D of scale polishing section 5
1Be to determine by the diameter of bottom outlet.
Embodiment two: as shown in Figure 1, a kind of no sword thermoplastic drilling tool is made of gripping section 1 and active section 2, active section 2 by the conical friction section 3 with first cone angle=90 degree, have second cone angle beta=39 degree tapered squeezing section 4, have diameter D
1Columniform scale polishing section 5 and have diameter D
2Shaping dish 6 form, the front end of friction section 3 is the sphere 7 that a radius R is 1.0mm, the length L of scale polishing section 5 and diameter D
1Ratio L/D
1＞1.5, the lower surface of shaping dish 6 is a smooth flat, the diameter D of shaping dish 6
2Diameter D for scale polishing section 5
11.7 times, the diameter D of scale polishing section 5
1Be to determine by the diameter of bottom outlet.
Embodiment three: as shown in Figure 1, a kind of no sword thermoplastic drilling tool is made of gripping section 1 and active section 2, active section 2 by the conical friction section 3 with first cone angle=95 degree, have second cone angle beta=45 degree tapered squeezing section 4, have diameter D
1Columniform scale polishing section 5 and have diameter D
2Shaping dish 6 form, the front end of friction section 3 is the sphere 7 that a radius R is 1.5mm, the length L of scale polishing section 5 and diameter D
1Ratio L/D
1＞1.5, the lower surface of shaping dish 6 is a face cutter, the diameter D of shaping dish 6
2Diameter D for scale polishing section 5
11.8 times, the diameter D of scale polishing section 5
1Be to determine by the diameter of bottom outlet.
Fig. 2 adopts the utility model to carry out chipless thermoplastic boring procedure schematic diagram.A) figure is drilling tool at a high speed rotation under main shaft drives, and feeding vertically simultaneously makes friction section just contact with workpiece and the state when heating of beginning to rub; B) figure is the state of extruded segment when beginning to enter work; C) figure is that friction section and extruded segment are in degree of depth work, the state when scale polishing Duan Gang enters work; D) figure is scale polishing section and the shaping dish state when being in work.
Use the course of work of drilling tool of the present utility model as follows: at first the gripping section with drilling tool is clipped on the main shaft of lathe or other instruments, driving drilling tool by main shaft rotates at a high speed, drive drilling tool feeding vertically simultaneously, when the drilling tool friction section contacts with thin metal parts, the bead kept man of a noblewoman of friction section end contacts with surface of the work earlier, because both actual contact situations are the face contact under certain pressure, therefore guarantee to have bigger initial contact friction area, can produce frictional heat fast the contact site is rapidly heated, and make the workpiece part reach the thermoplasticity state; Along with the downward feeding of drilling tool, the metal material that workpiece initial friction position reaches the thermoplastic state flows above side under the extruding of drilling tool friction section, forms the convex platform in hole, makes extruded segment enter duty simultaneously; After extruded segment enters work, on the one hand the metal flow direction that is heated to the thermoplasticity state by friction section is led, the oppose side wall metal carries out the extrusion friction heating on the other hand, enlarge the zone of thermoplasticity state, promote the formation in hole, after thin metal parts was bored thoroughly by friction section, the metal material that is in the thermoplasticity state flowed to side-lower under the extruding of extruded segment, forms the lower convex platform in hole; Along with friction section and extruded segment order form the hole and the zone of deactivating in proper order by thin metal parts, scale polishing section enters the working region, because the formed hole wall of extruded segment cools off gradually, the aperture begins to shrink, therefore scale polishing section is used to guarantee aperture precision on the one hand, and the hole wall that cooling is shunk carries out pressing to obtain smooth hole wall and good hole wall surface stress on the other hand; The shaping dish lags behind scale polishing section slightly and enters duty, the major function of shaping dish is that the metal material that flow to the upper end, hole is repaired moulding, so that screw connects, can there be two kinds of structures the lower surface of shaping dish, the smooth flat structure can be carried out pressing by the metal to the upper end, hole under the effect of pressure, make it to form ganoid convex platform, the face cutter structure can be with the metal mill off of hole upper end, thereby processes flat surface in the upper end, hole.
Claims (6)
1, a kind of no sword thermoplastic drilling tool, comprise gripping section and active section, it is characterized in that described active section is made up of the conical friction section with first cone angle, the tapered squeezing section with second cone angle, columniform scale polishing section and shaping dish, the front end of described friction section is a sphere that radius is 0.5mm～1.5mm, described first cone angle is 85 degree～95 degree, and described second cone angle is 35 degree～45 degree.
2, no sword thermoplastic drilling tool as claimed in claim 1 is characterized in that described first cone angle is 90 degree.
3, no sword thermoplastic drilling tool as claimed in claim 1 is characterized in that described second cone angle is 39 degree.
4, no sword thermoplastic drilling tool as claimed in claim 1, the draw ratio that it is characterized in that described scale polishing section is greater than 1.5.
5, no sword thermoplastic drilling tool as claimed in claim 1, the lower surface that it is characterized in that described shaping dish is a smooth flat, the diameter of described shaping dish is 1.7 times of described scale polishing section diameter.
6, no sword thermoplastic drilling tool as claimed in claim 1, the lower surface that it is characterized in that described shaping dish is a face cutter, the diameter of described shaping dish is 1.7 times of described scale polishing section diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420021380 CN2684978Y (en) | 2004-03-25 | 2004-03-25 | Non-blade thermoplastic drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420021380 CN2684978Y (en) | 2004-03-25 | 2004-03-25 | Non-blade thermoplastic drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2684978Y true CN2684978Y (en) | 2005-03-16 |
Family
ID=34669528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420021380 Expired - Fee Related CN2684978Y (en) | 2004-03-25 | 2004-03-25 | Non-blade thermoplastic drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2684978Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949537A (en) * | 2014-05-22 | 2014-07-30 | 李广连 | Circular cone head type drill roller |
| CN110394484A (en) * | 2019-08-13 | 2019-11-01 | 厦门厦芝科技工具有限公司 | A kind of three apex angular bit heads |
| CN113199065A (en) * | 2021-05-24 | 2021-08-03 | 常州智源顺智能装备科技有限公司 | Hot melting drill and application thereof |
-
2004
- 2004-03-25 CN CN 200420021380 patent/CN2684978Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949537A (en) * | 2014-05-22 | 2014-07-30 | 李广连 | Circular cone head type drill roller |
| CN110394484A (en) * | 2019-08-13 | 2019-11-01 | 厦门厦芝科技工具有限公司 | A kind of three apex angular bit heads |
| CN113199065A (en) * | 2021-05-24 | 2021-08-03 | 常州智源顺智能装备科技有限公司 | Hot melting drill and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |