CN104708965B - A kind of cutting process of wedge shape tip of a pencil and device - Google Patents
A kind of cutting process of wedge shape tip of a pencil and device Download PDFInfo
- Publication number
- CN104708965B CN104708965B CN201510116056.8A CN201510116056A CN104708965B CN 104708965 B CN104708965 B CN 104708965B CN 201510116056 A CN201510116056 A CN 201510116056A CN 104708965 B CN104708965 B CN 104708965B
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- pencil
- tip
- cutting
- tooth bar
- groove
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L23/00—Sharpeners for pencils or leads
- B43L23/02—Sharpeners for pencils or leads with gearing
- B43L23/04—Sharpeners for pencils or leads with gearing with cranked handles
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- Drawing Aids And Blackboards (AREA)
Abstract
The present invention relates to a kind of cutting process and device of wedge shape tip of a pencil, belong to tip of a pencil cutting process and device.Blade is separately fixed on the boss of tooth bar front end, in the groove of left tooth bar, right tooth bar difference inserted base side, in hole on driving shaft, driven shaft difference inserted base, rocker sleeve is connected on driving shaft, the groove of this rocking bar on the right side of base stretches out, and driving gear and driven gear are connected with a joggle, and end cap is fixedly connected with base by holding screw, pressing plate is arranged on the earrings on end cap by screw and nut, end cap has the V-shaped groove for pencil location.Novel structure of the present invention, cost is lower, is convenient to the flat sharp topping machanism of pencil promoted and keep in repair, may be used for effectively cutting the flat-shaped lead for retractable pencil needed for full-filling machine-read card processed.
Description
Technical field
The invention belongs to tip of a pencil cutting process and device, particularly a kind of cutting process of wedge shape tip of a pencil and device.
Background technology
Pencil is people's requisite a kind of instruments in daily life, can be used for writing, drawing the aspect such as (picture), full-filling machine-read card.Pencil needs to eliminate a certain amount of wood chip and exposes lead for retractable pencil and could use, unfamiliar user, such as children and students in middle and primary schools, and often fracture lead for retractable pencil in the process of sharpening a pencil, and the tip of a pencil shape of formation is also very lack of standardization.
Read and appraise efficiency to improve paper, examining body at different levels uses standardization machine-read card to carry out paper at present more and more and reads and appraises.Adopt tip of a pencil that common pencil sharpener is whittled into conically, use this kind of cone-shaped pencil point full-filling machine-read card can cause some problems, such as the full-filling time is long, efficiency is low; The consumption of lead for retractable pencil makes overall full-filling effect uneven; Be easy to disconnected core and prick bad machine-read card etc.The existing practice is that tip of a pencil is whittled into wedge shape, uses the full-filling of wedge shape tip of a pencil can improve full-filling efficiency widely, reduce the problems such as disconnected core.Up to now, the device for cutting wedge shape tip of a pencil relates generally to two classes.One, based on the device of milling cutter side milling, such as be respectively at number of patent application in two utility model patents of 86204405 and 201420194983.2 and disclose by one-sided milling to form the device of duckbill tip of a pencil, its feature is mainly: adopt one the milling cutter with two swords or multiple-cutting-edge, milling cutter axis of rotation and pencil axis keep certain inclination angle, first milling obtains a tapered plane, then rotation pencil again milling obtain another relative tapered plane.The deficiency of described device is mainly, tip of a pencil is one-sided stressed by milling part, and thickness of cutting is change, is easy to cause lead for retractable pencil to fracture.They are two years old, based on the device of milling cutter peripheral milling, be such as in the utility model patent of 201420540573.9, disclose the device being obtained arc pencil point by two side millings at number of patent application, its feature is mainly: the axis being parallel of two multiple-cutting-edge circumference milling cutters, the axis being parallel of pencil in two milling cutter circumference tangent line and between two milling cutter centre-to-centre spacing, two arcwall faces can be formed simultaneously.The deficiency of described device is, to ensure in two Multi-cutting-edge milling tools that each is difficult to all synchronous milling tip of a pencil of blade, this for blade on milling cutter and sharpening required precision all very high; In process of peripheral milling, thickness of cutting is also change, is easy to the lead for retractable pencil in timber is fractureed.
Summary of the invention
The invention provides a kind of cutting process and device of wedge shape tip of a pencil, to solve the problem that lead for retractable pencil fractures, installation requirement is high of current cutting process and device existence.
A cutting process for wedge shape tip of a pencil, comprises the following steps:
(1) using the axis of pencil to be cut as benchmark, two identical cutting tip symmetries are arranged on the both sides of described pencil axis, and keep identical cutting angle with pencil axis respectively;
(2) two blades described in are arranged on two tooth bars, and these two tooth bars are reciprocating with the cutting movement formed needed for material removal along two guide rails respectively;
(3) wedged gap formed needed for tip of a pencil also installed obliquely by two guide rails described in the bilateral symmetry of pencil axis;
(4) pencil holding to be cut is on a V-type setting element, and two blades are planed two sides of pencil front end simultaneously, remove a uniform cutting lay of thickness;
(5) unclamp the clamping element of clamping pencil, pencil, along the axis feeding of V-type setting element, then clamps pencil to obtain next cutting lay;
(6) repeat successively to carry out cutting until tip of a pencil is cut sharp by step (4) and (5);
(7) unclamp the clamping element of clamping pencil, pencil is returned and turn 90 degrees, repeat, until tip of a pencil is cut to proper width by step (4) ~ (6).
Realize a kind of wedge shape tip of a pencil topping machanism of the method for the invention, left blade is fixed on the boss of left tooth bar front end by holding screw one, right blade is fixed on the boss of right tooth bar front end by holding screw two, in the groove of left tooth bar inserted base left surface, left tooth bar can do front-rear reciprocation movement along the groove in chassis left side face, in the groove of right tooth bar inserted base right flank, right tooth bar can do front-rear reciprocation movement along the groove of base right flank, in the hole one of driving shaft inserted base right-hand member, in the hole two of driven shaft inserted base left end, rocker sleeve is connected on driving shaft, the groove of this rocking bar on the right side of base stretches out, driving gear to be socketed on driving shaft and to be positioned at above rocking bar, driven gear is socketed on driven shaft, driving gear and driven gear are connected with a joggle, end cap is fixedly connected with base by holding screw, pressing plate is arranged on the earrings on end cap by screw and nut, end cap there is the V-shaped groove for pencil location.
The operation principle of this device: two pairs of rack-and-pinions make the cutting movement of synchronous reciprocating, two tooth bars determine the angle of tip of a pencil wedge shape along the direction of motion of guide rail.Shake rocking bar, drives two gear revolutions and by two tooth bars, gyration is converted into straight reciprocating motion.During rocking bar forward rocking motion, two tooth bars travel forward simultaneously, and two blades be arranged on tooth bar cut pencil respectively; When rocking bar swings backward, two tooth bars move simultaneously backward, march forward to required space to reserve pencil.
The invention has the advantages that: 1. use two pairs of rack-and-pinion as motion, structure is simple, easily manufactures, easy and simple to handle; 2. use two blades to carry out synchronous cutting, not only increase stock-removing efficiency, and cross force can be cancelled out each other, tip of a pencil not frangibility in working angles; What 3. adopt is that planing is removed instead of milling is removed, and each cutting layer thickness cut is uniform.
The present invention is applicable to: be difficult to the crowd grasping the cutting of wedge shape lead for retractable pencil point, such as students in middle and primary schools etc.A kind of simple children etc. are provided to be difficult to cut the people that the makes flat-shaped lead for retractable pencil flat sharp cutting process of pencil used; The flat-shaped lead for retractable pencil topping machanism that the full-filling machine-read card providing a kind of structure simple, cheap, easy and simple to handle is used.Novel structure of the present invention, cost is lower, is convenient to the flat sharp topping machanism of pencil promoted and keep in repair, may be used for effectively cutting the flat-shaped lead for retractable pencil needed for full-filling machine-read card processed.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is that the present invention is from the structural representation viewed from another direction;
Fig. 3 is internal structure schematic diagram of the present invention;
Fig. 4 is the top view of internal mechanism of the present invention;
Fig. 5 is that the present invention is from the structural representation viewed from another direction;
Fig. 6 is understructure schematic diagram of the present invention;
Fig. 7 is the pencil after first stage of the present invention processing;
Fig. 8 is the pencil after the present invention machines.
Detailed description of the invention
A kind of wedge shape tip of a pencil cutting process, comprises the following steps:
(1) using the axis of pencil to be cut as benchmark, two identical cutting tip symmetries are arranged on the both sides of described pencil axis, and keep identical cutting angle with pencil axis respectively;
(2) two blades described in are arranged on two tooth bars, and these two tooth bars are reciprocating with the cutting movement formed needed for material removal along two guide rails respectively;
(3) wedged gap formed needed for tip of a pencil also installed obliquely by two guide rails described in the bilateral symmetry of pencil axis;
(4) pencil holding to be cut is on a V-type setting element, and two blades are planed two sides of pencil front end simultaneously, remove a uniform cutting lay of thickness;
(5) unclamp the clamping element of clamping pencil, pencil, along the axis feeding of V-type setting element, then clamps pencil to obtain next cutting lay;
(6) repeat successively to carry out cutting until tip of a pencil is cut sharp by step (4) and (5);
(7) unclamp the clamping element of clamping pencil, pencil is returned and turn 90 degrees, repeat, until tip of a pencil is cut to proper width by step (4) ~ (6).
Realize a kind of wedge shape tip of a pencil topping machanism of the method for the invention, left blade 11 is fixed on the boss of left tooth bar 5 front end by holding screw 1, right blade 13 is fixed on the boss of right tooth bar 14 front end by holding screw 2 18, in the groove of left tooth bar 5 inserted base 1 left surface, left tooth bar 5 can do front-rear reciprocation movement along the groove of base 1 left surface, in the groove of right tooth bar 14 inserted base 1 right flank, right tooth bar 14 can do front-rear reciprocation movement along the groove of base 1 right flank, in the hole 1 of driving shaft 16 inserted base 1 right-hand member, in the hole 2 102 of driven shaft 15 inserted base 1 left end, rocking bar 2 is socketed on driving shaft 16, the groove of this rocking bar 2 on the right side of base 1 stretches out, driving gear 3 to be socketed on driving shaft 16 and to be positioned at above rocking bar 2, driven gear 4 is socketed on driven shaft 15, driving gear and driven gear are connected with a joggle, end cap 7 is fixedly connected with base 1 by holding screw 6, pressing plate 9 is arranged on the earrings on end cap 7 by screw 8 and nut 10, end cap 7 there is the V-shaped groove for pencil location.
This device operating procedure: 1. rocking bar is shaken last position, ensures that the distance between two blades is maximum; 2. open pressing plate, pencil 12 is inserted in the V-shaped groove in the middle of end cap, and pencil is moved along its axis suitable position; 3. close pressing plate, and use left hand clamping platen, and to prevent when cutting, pencil is play forward; 4. shake rocking bar forward, make the blade on pencil both sides cut away a certain amount of wood chip and lead for retractable pencil forward simultaneously; 5. repeat step 1. to arrive 4., until whole pencil stub is cut into flat pointed; 6. pencil is rotated 90 ° around its axle, the flat point of the pencil that 5. step is obtained is horizontal positioned, machines away the wood at flat sharp two ends to obtain final form to facilitate following step; 7. shake rocking bar again, described in 1. arriving 4. according to step, make the blade on both sides cut the unnecessary wood in flat sharp two ends simultaneously, until be cut into required form, but in this one-phase, ensure that blade only cuts wood chip, otherwise lead for retractable pencil can be cut into tetrapyamid shape.
Claims (2)
1. a cutting process for wedge shape tip of a pencil, comprises the following steps:
(1) using the axis of pencil to be cut as benchmark, two identical cutting tip symmetries are arranged on the both sides of described pencil axis, and keep identical cutting angle with pencil axis respectively;
(2) two blades described in are arranged on two tooth bars, and these two tooth bars are reciprocating with the cutting movement formed needed for material removal along two guide rails respectively;
(3) wedged gap formed needed for tip of a pencil also installed obliquely by two guide rails described in the bilateral symmetry of pencil axis;
(4) pencil holding to be cut is on a V-type setting element, and two blades are planed two sides of pencil front end simultaneously, remove a uniform cutting lay of thickness;
(5) unclamp the clamping element of clamping pencil, pencil, along the axis feeding of V-type setting element, then clamps pencil to obtain next cutting lay;
(6) repeat successively to carry out cutting until tip of a pencil is cut sharp by step (4) and (5);
(7) unclamp the clamping element of clamping pencil, pencil is returned and turn 90 degrees, repeat, until tip of a pencil is cut to proper width by step (4) ~ (6).
2. one kind realizes the wedge shape tip of a pencil topping machanism of method as claimed in claim 1, it is characterized in that: left blade is fixed on the boss of left tooth bar front end by holding screw one, right blade is fixed on the boss of right tooth bar front end by holding screw two, in the groove of left tooth bar inserted base left surface, left tooth bar can do front-rear reciprocation movement along the groove in chassis left side face, in the groove of right tooth bar inserted base right flank, right tooth bar can do front-rear reciprocation movement along the groove of base right flank, in the hole one of driving shaft inserted base right-hand member, in the hole two of driven shaft inserted base left end, rocker sleeve is connected on driving shaft, the groove of this rocking bar on the right side of base stretches out, driving gear to be socketed on driving shaft and to be positioned at above rocking bar, driven gear is socketed on driven shaft, driving gear and driven gear are connected with a joggle, end cap is fixedly connected with base by holding screw, pressing plate is arranged on the earrings on end cap by screw and nut, end cap there is the V-shaped groove for pencil location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510116056.8A CN104708965B (en) | 2015-03-17 | 2015-03-17 | A kind of cutting process of wedge shape tip of a pencil and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510116056.8A CN104708965B (en) | 2015-03-17 | 2015-03-17 | A kind of cutting process of wedge shape tip of a pencil and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104708965A CN104708965A (en) | 2015-06-17 |
| CN104708965B true CN104708965B (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510116056.8A Expired - Fee Related CN104708965B (en) | 2015-03-17 | 2015-03-17 | A kind of cutting process of wedge shape tip of a pencil and device |
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| CN (1) | CN104708965B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107351578A (en) * | 2017-06-27 | 2017-11-17 | 太仓市麦哲电子商务有限公司 | A kind of new-type pencil sharpener |
| CN107297983B (en) * | 2017-06-30 | 2019-03-05 | 浙江理工大学 | A kind of pencil sharpener of adjustable pencil capitiform taper |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2222627Y (en) * | 1995-01-25 | 1996-03-20 | 兰平 | Vertical pencil sharpener |
| CN201646182U (en) * | 2010-01-29 | 2010-11-24 | 贤申华 | Pencil sharpener capable of sharpening flat-headed pencil lead |
| CN201665102U (en) * | 2010-03-30 | 2010-12-08 | 山东理工大学 | Longitudinal-feeding pull-plug type pencil-sharpener for flathead pencil |
| CN203864293U (en) * | 2014-04-30 | 2014-10-08 | 成都理工大学 | Flat penpoint pencil sharpener |
| CN204077186U (en) * | 2014-09-20 | 2015-01-07 | 杜丽丽 | Be coated with answering card pencil sharpener |
| CN204488336U (en) * | 2015-03-17 | 2015-07-22 | 周千寓 | A kind of topping machanism of wedge shape tip of a pencil |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4181471B2 (en) * | 2003-10-07 | 2008-11-12 | 株式会社アスカ | Electric pencil sharpener |
-
2015
- 2015-03-17 CN CN201510116056.8A patent/CN104708965B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2222627Y (en) * | 1995-01-25 | 1996-03-20 | 兰平 | Vertical pencil sharpener |
| CN201646182U (en) * | 2010-01-29 | 2010-11-24 | 贤申华 | Pencil sharpener capable of sharpening flat-headed pencil lead |
| CN201665102U (en) * | 2010-03-30 | 2010-12-08 | 山东理工大学 | Longitudinal-feeding pull-plug type pencil-sharpener for flathead pencil |
| CN203864293U (en) * | 2014-04-30 | 2014-10-08 | 成都理工大学 | Flat penpoint pencil sharpener |
| CN204077186U (en) * | 2014-09-20 | 2015-01-07 | 杜丽丽 | Be coated with answering card pencil sharpener |
| CN204488336U (en) * | 2015-03-17 | 2015-07-22 | 周千寓 | A kind of topping machanism of wedge shape tip of a pencil |
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| CN104708965A (en) | 2015-06-17 |
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Granted publication date: 20160420 Termination date: 20200317 |
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