CN104889856B - Chart chalk sharpener - Google Patents
Chart chalk sharpener Download PDFInfo
- Publication number
- CN104889856B CN104889856B CN201510299898.1A CN201510299898A CN104889856B CN 104889856 B CN104889856 B CN 104889856B CN 201510299898 A CN201510299898 A CN 201510299898A CN 104889856 B CN104889856 B CN 104889856B
- Authority
- CN
- China
- Prior art keywords
- grinding
- sliding block
- emery wheel
- chalk
- motor
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K19/00—Non-propelling pencils; Styles; Crayons; Chalks
- B43K19/003—Chalks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses drawing chalk sharpener.Teacher generally requires to be ground chalk to draw the standard of lines and line width, has both expended the time of teacher, is also unfavorable for the healthy of teacher.Two sliding block centerings of the present invention are set, and the two ends of each sliding block are supported on an optical axis respectively；The middle part of two sliding blocks constitutes screw thread pair with Bidirectional-screw；The inner of graduated scale is fixed on a sliding block, and outer end is stretched out outside housing；Grinding attachment is equipped with two sliding blocks of width adjusting mechanism；Grinding attachment includes motor, emery wheel grinding-head and positive coupling；Cantilever pedestal and motor rack are fixed by screws on sliding block；The keying of electric supply installation controlled motor；Motor drives emery wheel grinding-head；The support shaft of emery wheel grinding-head end is supported on cantilever pedestal by rolling bearing；The emery wheel grinding-head centering of two grinding attachments is set.The adjustable chalk for being ground out different in width demand of the present invention, realizes the mechanization grinding of classroom instruction drawing chalk.
Description
Technical field
The invention belongs to field of mechanical technique, and in particular to one kind drawing chalk sharpener.
Background technology
《Engineering Drawing》Etc. the classroom teaching of all kinds of Engineering Drawing Courses, teacher needs for the demonstration of drawing
Plot exhibits are carried out on blackboard.Teacher generally requires to carry out cylindrical type chalk to draw the standard of lines and line width
Grinding, grinds " duckbilled " type chalk end of different-thickness.Grinding chalk had both consumed the plenty of time for the teacher that attends class, and was also unfavorable for
Teacher's is healthy.
The content of the invention
The purpose of the present invention be in view of the shortcomings of the prior art there is provided one kind chart chalk sharpener, it is adjustable to be ground out
The chalk of different in width demand, realizes the mechanization grinding of classroom instruction drawing chalk, so as to improve classroom drawing teaching effect
Rate.
The technical solution used in the present invention is：
The present invention includes housing, grinding attachment, electric supply installation, width adjusting mechanism and pen bits box；Described housing is removable
Unload and be connected with lid, lid offers chalk bullport；Described electric supply installation is powered to grinding attachment.
Described width adjusting mechanism includes Bidirectional-screw, optical axis, handwheel, graduated scale and sliding block；The Bidirectional-screw and
The two ends of two optical axises are each attached on housing；One end fastening of handwheel and Bidirectional-screw；Two sliding block centerings are set, each sliding
The two ends of block are supported on an optical axis by linear bearing respectively；The tapped hole in the middle part of two sliding blocks, two screw threads
Hole it is oppositely oriented；The thread rotary orientation at the Bidirectional-screw two ends is on the contrary, and the screwed hole with a sliding block constitutes screw thread respectively
It is secondary；The inner of the graduated scale is fixed on a sliding block, and outer end is stretched out outside housing；It is carved with scale, and " 0 " in the outer end of graduated scale
Graduation mark is arranged on outer end end；During initial position, two sliding blocks are in contact, and " 0 " graduation mark aligns with hull outside wall；Institute
State two oppositely oriented Major Diams of Bidirectional-screw equal, be 4~6mm, its pitch is L, L value is straight according to screw thread
Chosen from metric system standard thread in footpath；The minimum scale value of the graduated scale is 2L, the corresponding actual scale value of minimum scale value
For L.
Grinding attachment is equipped with two sliding blocks of the width adjusting mechanism.Described grinding attachment includes motor, sand
Take turns bistrique and positive coupling；Cantilever pedestal and motor rack are fixed by screws on sliding block；Described electric supply installation control
The keying of motor；Described motor is fixed on motor rack, and the support shaft of its output shaft and emery wheel grinding-head end passes through rigid
Axle device is connected；The support shaft of the emery wheel grinding-head end is supported on cantilever pedestal by rolling bearing；Two grinding attachments
Emery wheel grinding-head centering is arranged on below the chalk bullport of lid, and described pen bits box is arranged on below two emery wheel grinding-heads.
The output shaft of the motor and the support shaft of emery wheel grinding-head end are interference fitted with the inner ring of an axle sleeve respectively, and two
The outer ring of individual axle sleeve is interference fitted with one end of positive coupling respectively.
The device have the advantages that：
The adjustable chalk for being ground out different in width demand of the present invention, had both liberated the work of teacher, and had been more beneficial for teacher
The specification of classroom drawing displaying.The present invention is simple in construction, with low cost.
Brief description of the drawings
Fig. 1 is overall structure stereogram of the invention；
Fig. 2 is grinding attachment schematic diagram of the invention；
Fig. 3 is the scheme of installation of electric supply installation in the present invention.
Embodiment
Below in conjunction with the accompanying drawings and the present invention is further described embodiment.
As shown in figures 1 and 3, chart chalk sharpener, including housing, grinding attachment 1, electric supply installation 2, width adjustment machine
Structure 3 and pen bits box 4；Housing is removably connected with lid, and lid offers chalk bullport；Electric supply installation 2 is supplied to grinding attachment 1
Electricity.
As depicted in figs. 1 and 2, width adjusting mechanism 3 includes Bidirectional-screw 3-1, optical axis 3-2, handwheel 3-3, graduated scale 3-5
With sliding block 3-6；Bidirectional-screw 3-1 and two optical axis 3-2 two ends are fixed on housing by fixed seat 3-4；Handwheel 3-3 leads to
Screw is crossed to fasten with Bidirectional-screw 3-1；Two sliding block 3-6 centerings are set, and each sliding block 3-6 two ends pass through linear bearing respectively
3-7 is supported on an optical axis 3-2；The tapped hole in two sliding block 3-6 middle part, two screwed holes it is oppositely oriented；It is double
To the thread rotary orientation at screw mandrel 3-1 two ends on the contrary, and the screwed hole with a sliding block 3-6 constitutes screw thread pair respectively；Graduated scale 3-5's
The inner is fixed by screws on a sliding block 3-6, and outer end is stretched out outside housing；It is carved with scale, and " 0 " in graduated scale 3-5 outer end
Graduation mark is arranged on outer end end；During initial position, two sliding block 3-6 are in contact, " 0 " graduation mark and hull outside wall pair
Together；Two oppositely oriented Bidirectional-screw 3-1 Major Diams are equal, are 4~6mm, and its pitch is L, and L value is according to spiral shell
Line diameter is chosen from metric system standard thread；Graduated scale 3-5 minimum scale value is 2L, the corresponding actual scale of minimum scale value
It is worth for L.Handwheel is shaken, realizes two sliding blocks dorsad or move toward one another；Slide block movement drives graduated scale motion, so as to realize accurately
Adjust the polishing width of chalk.
Grinding attachment 1 is equipped with two sliding block 3-6 of width adjusting mechanism 3.Grinding attachment 1 includes motor 1-1, emery wheel
Bistrique 1-2 and positive coupling 1-5；Cantilever pedestal 1-4 and motor rack 1-7 are fixed by screws on sliding block 3-6；Power supply dress
Put 2 controlled motor 1-1 keying；Motor 1-1 is fixed by screws on motor rack 1-7, its output shaft and emery wheel grinding-head 1-2 ends
The support shaft in portion is interference fitted with axle sleeve 1-6 inner ring respectively, two axle sleeve 1-6 outer ring respectively with positive coupling 1-
5 one end interference fit；The support shaft of emery wheel grinding-head 1-2 ends is supported on cantilever pedestal 1-4 by rolling bearing 1-3；Two
The emery wheel grinding-head 1-2 centerings of individual grinding attachment 1 are arranged on below the chalk bullport of lid, and pen bits box 4 is arranged on two emery wheels
Below bistrique 1-2.
The operation principle of the drawing chalk sharpener is as follows：
In use, adjusting handle 3-3 drives Bidirectional-screw 3-1 to rotate, it is wide according to graduated scale 3-5 readings and default chalk
Degree makes sliding block 3-6 move to the position specified；Electric supply installation 2 controls the motor 1-1 of two grinding attachments 1 to open simultaneously, so that
Two emery wheel grinding-head 1-2 are driven to rotate；Taken out after chalk is stretched into grinding some seconds from chalk bullport, electric supply installation 2 is controlled
Motor 1-1 is stalled；Chalk bits are fallen into pen bits box 4, and pen bits box 4 can be taken off cleaning chalk bits.Graduated scale 3-5 " 0 " graduation mark
It is arranged on outer end end；Graduated scale 3-5 minimum scale value is 2L, and the corresponding actual scale value of minimum scale value is L, because
This, during hand wheel rotating, the scale of graduated scale 3-5 changes is the polishing width regulated value of chalk, it is not necessary to by conversion,
Convenient operation, and the grinding of a variety of line width chalks can be met.
Claims (2)
1. chart chalk sharpener, including housing, grinding attachment, electric supply installation, width adjusting mechanism and pen bits box, its feature exists
In：Described housing is removably connected with lid, and lid offers chalk bullport；Described electric supply installation is supplied to grinding attachment
Electricity；
Described width adjusting mechanism includes Bidirectional-screw, optical axis, handwheel, graduated scale and sliding block；The Bidirectional-screw and two
The two ends of optical axis are each attached on housing；One end fastening of handwheel and Bidirectional-screw；Two sliding block centerings are set, each sliding block
Two ends are supported on an optical axis by linear bearing respectively；The tapped hole in the middle part of two sliding blocks, two screwed holes
It is oppositely oriented；The thread rotary orientation at the Bidirectional-screw two ends is on the contrary, and the screwed hole with a sliding block constitutes screw thread pair respectively；Institute
The inner for stating graduated scale is fixed on a sliding block, and outer end is stretched out outside housing；It is carved with scale, and " 0 " scale in the outer end of graduated scale
Line is arranged on outer end end；During initial position, two sliding blocks are in contact, and " 0 " graduation mark aligns with hull outside wall；It is described double
It is equal to two oppositely oriented Major Diams of screw mandrel, be 4~6mm, its pitch is L, L value according to the diameter of thread from
Chosen in metric system standard thread；The minimum scale value of the graduated scale is 2L, and the corresponding actual scale value of minimum scale value is L；
Grinding attachment is equipped with two sliding blocks of the width adjusting mechanism；Described grinding attachment includes motor, emery wheel and ground
Head and positive coupling；Cantilever pedestal and motor rack are fixed by screws on sliding block；Described electric supply installation controlled motor
Keying；Described motor is fixed on motor rack, and its output shaft and the support shaft of emery wheel grinding-head end pass through positive coupling
Connection；The support shaft of the emery wheel grinding-head end is supported on cantilever pedestal by rolling bearing；The emery wheel of two grinding attachments
Bistrique centering is arranged on below the chalk bullport of lid, and described pen bits box is arranged on below two emery wheel grinding-heads.
2. drawing chalk sharpener according to claim 1, it is characterised in that：The output shaft and emery wheel grinding-head of the motor
The support shaft of end is interference fitted with the inner ring of axle sleeve respectively, the one end of the outer rings of two axle sleeves respectively with positive coupling
Interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510299898.1A CN104889856B (en) | 2015-06-03 | 2015-06-03 | Chart chalk sharpener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510299898.1A CN104889856B (en) | 2015-06-03 | 2015-06-03 | Chart chalk sharpener |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104889856A CN104889856A (en) | 2015-09-09 |
| CN104889856B true CN104889856B (en) | 2017-08-22 |
Family
ID=54023036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510299898.1A Active CN104889856B (en) | 2015-06-03 | 2015-06-03 | Chart chalk sharpener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104889856B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111546177B (en) * | 2020-06-15 | 2021-07-06 | 河南职业技术学院 | Chalk end grinding device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB431471A (en) * | 1932-12-05 | 1935-07-05 | Cincinnati Grinders Inc | Improvements in or relating to centreless lapping machines |
| KR100290981B1 (en) * | 1999-03-12 | 2001-05-15 | 우종윤 | Apparatus for Grinding Marking or Sewing Chalk |
| CN101362305B (en) * | 2008-09-19 | 2011-03-23 | 潘吕娇 | Crystal automatic grinding machine |
| CN202556246U (en) * | 2012-03-09 | 2012-11-28 | 银川市长城液压有限责任公司 | Cubic boron nitride grinding wheel dressing device |
| CN203409653U (en) * | 2013-08-05 | 2014-01-29 | 烟台海德机床有限公司 | Grinding wheel corrector |
| CN203973320U (en) * | 2014-07-04 | 2014-12-03 | 德昌电机（南京）有限公司 | A kind of Double End grinding machine |
-
2015
- 2015-06-03 CN CN201510299898.1A patent/CN104889856B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104889856A (en) | 2015-09-09 |
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