CN102632744A - 670 pen point and production technique thereof - Google Patents
670 pen point and production technique thereof Download PDFInfo
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- CN102632744A CN102632744A CN2012101285273A CN201210128527A CN102632744A CN 102632744 A CN102632744 A CN 102632744A CN 2012101285273 A CN2012101285273 A CN 2012101285273A CN 201210128527 A CN201210128527 A CN 201210128527A CN 102632744 A CN102632744 A CN 102632744A
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- ball
- seamless pipe
- ball seat
- taper seat
- seat hole
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Abstract
The invention relates to a 670 pen point and a production technique thereof. The 670 pen point is processed by a seamless pipe, the front end of the seamless pipe is pointed by a conical tool and is pressed to a conical surface gradually decreasing from the inside diameter towards the top end of the seamless pipe, the free end of the conical surface is necked by a cylindrical tool, the inside diameter of the necked part is generally equal to the diameter of a ball, four ink discharge grooves are pressed on the necked part of the conical surface by a tool, the four ink discharge grooves are uniformly distributed along the circumferential direction to form a ball seat, the ball seat and the conical surface are cut at a high speed to trim the surface, the surfaces of the ink discharge grooves are trimmed by a groove knife, the ball is embedded in a ball seat hole, and finally, the deckle edge of the top end of the seamless pipe is bent and coiled inwards to fix the ball in the ball seat, and a movable gap is left between the ball and the ball seat hole.
Description
Technical field
The present invention relates to a kind of and 670 nibs of this spline structure are arranged, wherein the taper seat free end is provided with the ball seat that is formed by four circumferential equally distributed venting grooves in edge, is embedded in the ball seat as the ball of writing part.The invention still further relates to the production technology of this nib.
Background technology
670 nibs are claimed bullet-shaped nib again, and its traditional production method is to process through multiprogramming with a solid SF20T stainless steel material.Specifically; This method is that solid material is begun drill centers from its inside after bottom chamfer; Then the peripheral front end of material is carried out multistep high-speed cutting operation to form in one the trochoidal surface that material free end radially reduces gradually; Bore aperture at the material top end again; Going out five circumferential equally distributed venting grooves in edge to form the ball seat hole of supporting ball with the jet-bedding cutter, at last ball is embedded ball seat and afterwards tubule top burr are curved inwardly to fix ball then apart from material free end a distance.In a word, from a technical standpoint, " the production technology more complicated of this 670 nibs, and on taper seat, cause nib to rupture easily and monolateral and write condition of poor towards the venting groove with the groove cutter, in addition, this technology causes the waste of material easily.
Summary of the invention
The present invention attempts to seek the 670 written production technologies that a kind of manufacture craft is simple, materials are economized and reliable in quality is provided in a kind of use and 670 nibs of easy fracture not.
In order to reach this target, the inventive method adopts a seamless pipe after bottom chamfer, with a conical instrument seamless pipe fore-end to be pressed into the taper seat that a diameter reduces to the seamless pipe top gradually.With a cylinder kind tool taper seat fore-end is carried out undergauge, i.e. compacting makes its internal diameter equate substantially with the ball diameter.Suppressed four venting grooves by diameter shrinkage part with an instrument, four venting grooves are along circumferentially evenly distributing to form the ball seat hole.Ball seat hole, taper seat are carried out high-speed cutting to repair its surface.Ball is embedded in the ball seat hole.Taper seat top burr are curved inwardly.
The present invention's 670 nibs are processed with a seamless pipe; Seamless pipe bottom is provided with chamfering and seamless pipe fore-end and processes always the taper seat that seamless pipe top orientation radially reduces gradually; Said taper seat is pressed into cylindric near free-ended one section; And this part is provided with the venting groove, and the venting groove has four and along circumferentially being evenly distributed to form the ball seat hole, ball seat is provided with ball in the hole.The bus of taper seat and horizontal plane angle are 75 °.The free end burr of taper seat curve inwardly, and ball remains between ball seat hole and the taper seat free end concave edge.Between said ball and the ball seat hole free gap is arranged.
The remarkable advantage of the inventive method is that manufacturing process is simple, and materials are saved.With the 670 written reliable in quality that the method is produced, long service life.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the vertical view of ball seat hole 4 structure for amplifying among Fig. 1;
Fig. 3 is the sketch map of seamless pipe 1 after pinching process;
Fig. 4 is the sketch map of taper seat 5 shown in Figure 3 after the undergauge process.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail:
Embodiment
As shown in Figure 1, what make 670 nib uses is a seamless pipe 1, in pinching process; The taper seat 5 (Fig. 3) that reduces gradually of seamless pipe 1 top radially in the fore-end of seamless pipe is pressed into conical instrument 8, the free end of taper seat 5 carries out undergauge (Fig. 4) through cylinder instrument 9, makes the diameter that is equaled ball 3 by the internal diameter of diameter shrinkage part substantially; Suppressed four venting grooves 6, four venting grooves 6 along circumferentially evenly distribute to form ball seat hole 4 (Fig. 2) by diameter shrinkage part with instrument 2 at taper seat 5, in the finish turning process ball seat hole 4, taper seat 5 are carried out high-speed cutting with refacing; Repair in the groove process; Surface with the groove cutter is repaired said venting groove 6 embeds ball 3 in the ball seat hole 4, in the closing in process; Seamless pipe 1 top burr are inwardly twisted, make ball 3 be fixed in the said ball seat hole 4.
670 nibs of processing; Comprise seamless pipe 1, seamless pipe 1 bottom is provided with chamfering 7 and seamless pipe 1 fore-end and processes in one the taper seat 5 that its top orientation radially reduces gradually, and said taper seat 5 is pressed into cylindric near free-ended one section; And this part is provided with venting groove 6; Venting groove 6 has four, and four venting grooves 6 are provided with ball 3 along circumferentially being evenly distributed to form ball seat hole 4 in the ball seat hole 4.
The bus of taper seat 5 and horizontal plane angle
are 75 °.
The free end burr of taper seat 5 curve inwardly, and ball 3 remains between ball seat hole 4 and the taper seat 5 free end concave edges.
As preferably, between said ball 3 and the ball seat hole 4 free gap is arranged.
Claims (5)
1. written production technology may further comprise the steps: seamless pipe is through chamfering, pinching, and undergauge, pressure point, finish turning is repaiied groove, adds pearl, closes up at last, it is characterized in that:
Use conical anchor clamps (8) that the extruding of seamless pipe (1) front end is made an internal diameter towards the taper seat (5) that said seamless pipe (1) top reduces gradually in the pinching process, make that the bus of taper seat (5) and horizontal plane angle
are 75 °;
Use a cylinder instrument (9) that taper seat (5) free end is suppressed in the undergauge process, the feasible diameter that is equaled ball (3) by the internal diameter of diameter shrinkage part substantially;
In the pressure point process, made four venting grooves (6) by diameter shrinkage part with instrument (2) extruding at seamless pipe (1), four venting grooves (6) are along circumferentially being evenly distributed to form ball seat hole (4);
In the finish turning process ball seat hole (4), taper seat (5) are carried out high-speed cutting with refacing;
Repair in the groove process, repair the surface of said venting groove (6) with the groove cutter;
Ball (3) is embedded in the ball seat hole (4);
In the closing in process, seamless pipe (1) top burr are inwardly twisted, make ball (3) be fixed in the said ball seat hole (4).
2. nib; Comprise seamless pipe (1); Said seamless pipe (1) bottom is provided with chamfering (7) and seamless pipe (1) fore-end and processes in one the taper seat (5) that seamless pipe (1) top orientation radially reduces gradually; It is characterized in that: said taper seat (5) is pressed into cylindric near free-ended one section, and this part is provided with venting groove (6), and venting groove (6) has four; Said four venting grooves (6) are provided with ball (3) along circumferentially being evenly distributed to form ball seat hole (4) in ball seat hole (4).
3. 670 nibs according to claim 2 is characterized in that: the bus of taper seat (5) and horizontal plane angle
are 75 °.
4. according to claim 2 or 3 described 670 nibs, it is characterized in that: the free end burr of taper seat (5) curve inwardly, and said ball (3) remains between ball seat hole (4) and taper seat (5) the free end concave edge.
5. according to claim 2 or 3 described 670 nibs, it is characterized in that: between said ball (3) and ball seat hole (4) free gap is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101285273A CN102632744A (en) | 2012-04-28 | 2012-04-28 | 670 pen point and production technique thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101285273A CN102632744A (en) | 2012-04-28 | 2012-04-28 | 670 pen point and production technique thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102632744A true CN102632744A (en) | 2012-08-15 |
Family
ID=46617398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101285273A Pending CN102632744A (en) | 2012-04-28 | 2012-04-28 | 670 pen point and production technique thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102632744A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104309358A (en) * | 2014-10-22 | 2015-01-28 | 意瑞纳米科技(昆山)有限公司 | Manufacturing method for needle tube pen point and dotting mechanism |
| CN104551570A (en) * | 2015-01-13 | 2015-04-29 | 林大喜 | 670 pen point processing method and 670 pen point prepared based on method |
| CN108859501A (en) * | 2018-06-07 | 2018-11-23 | 慈溪市绿茂丰烟具有限公司 | The production method of liquid-leakage preventing nib |
| CN113857791A (en) * | 2021-10-26 | 2021-12-31 | 平阳县尚伟笔业有限公司 | Processing method of tubular double-ball pen point |
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| CN86105488A (en) * | 1986-01-21 | 1988-03-09 | 鲁迪·胡特 | Tip of stylus and preparation method thereof |
| JPH02147136A (en) * | 1988-11-25 | 1990-06-06 | Mitsubishi Pencil Co Ltd | Manufacture of ball point pen tip |
| JPH02160597A (en) * | 1988-12-15 | 1990-06-20 | Mitsubishi Pencil Co Ltd | Manufacture of ballpoint pen tip |
| CN1131931A (en) * | 1994-08-10 | 1996-09-25 | 百龙企业有限公司 | Tip of ball-point pen and method of manufacturing same |
| JP2000015979A (en) * | 1998-06-30 | 2000-01-18 | Mitsubishi Pencil Co Ltd | Ballpoint pen tip |
| JP2003039870A (en) * | 2001-07-31 | 2003-02-13 | Pentel Corp | Bal-point pen or applicator tip |
| JP2004268278A (en) * | 2003-03-05 | 2004-09-30 | Pilot Ink Co Ltd | Ball-point pen |
| CN101786394A (en) * | 2010-03-10 | 2010-07-28 | 上海高铨精密五金有限公司 | Improved needle tube type gel link pen and pen point thereof |
| CN202608308U (en) * | 2012-04-28 | 2012-12-19 | 林大喜 | 670 pen point |
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2012
- 2012-04-28 CN CN2012101285273A patent/CN102632744A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105488A (en) * | 1986-01-21 | 1988-03-09 | 鲁迪·胡特 | Tip of stylus and preparation method thereof |
| JPH02147136A (en) * | 1988-11-25 | 1990-06-06 | Mitsubishi Pencil Co Ltd | Manufacture of ball point pen tip |
| JPH02160597A (en) * | 1988-12-15 | 1990-06-20 | Mitsubishi Pencil Co Ltd | Manufacture of ballpoint pen tip |
| CN1131931A (en) * | 1994-08-10 | 1996-09-25 | 百龙企业有限公司 | Tip of ball-point pen and method of manufacturing same |
| JP2000015979A (en) * | 1998-06-30 | 2000-01-18 | Mitsubishi Pencil Co Ltd | Ballpoint pen tip |
| JP2003039870A (en) * | 2001-07-31 | 2003-02-13 | Pentel Corp | Bal-point pen or applicator tip |
| JP2004268278A (en) * | 2003-03-05 | 2004-09-30 | Pilot Ink Co Ltd | Ball-point pen |
| CN101786394A (en) * | 2010-03-10 | 2010-07-28 | 上海高铨精密五金有限公司 | Improved needle tube type gel link pen and pen point thereof |
| CN202608308U (en) * | 2012-04-28 | 2012-12-19 | 林大喜 | 670 pen point |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104309358A (en) * | 2014-10-22 | 2015-01-28 | 意瑞纳米科技(昆山)有限公司 | Manufacturing method for needle tube pen point and dotting mechanism |
| CN104551570A (en) * | 2015-01-13 | 2015-04-29 | 林大喜 | 670 pen point processing method and 670 pen point prepared based on method |
| CN108859501A (en) * | 2018-06-07 | 2018-11-23 | 慈溪市绿茂丰烟具有限公司 | The production method of liquid-leakage preventing nib |
| CN113857791A (en) * | 2021-10-26 | 2021-12-31 | 平阳县尚伟笔业有限公司 | Processing method of tubular double-ball pen point |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120815 |