CN110238716A - A kind of plastic crusher knuckle-tooth knife and its grinding fixture, processing technology - Google Patents
A kind of plastic crusher knuckle-tooth knife and its grinding fixture, processing technology Download PDFInfo
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- CN110238716A CN110238716A CN201910429445.4A CN201910429445A CN110238716A CN 110238716 A CN110238716 A CN 110238716A CN 201910429445 A CN201910429445 A CN 201910429445A CN 110238716 A CN110238716 A CN 110238716A
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- cutter
- knuckle
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/18—Knives; Mountings thereof
- B02C18/182—Disc-shaped knives
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- 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
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
- B24B3/46—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of disc blades
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- 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The invention discloses a kind of plastic crusher knuckle-tooth knife and its grinding fixtures, processing technology, belong to technical field of mechanical cutters.Knuckle-tooth knife includes the cutter body of cylindrical shape, and n cutter tooth is uniformly distributed on peripheral length direction, wherein 30≤n≤50 form tooth socket between two neighboring cutter tooth, and the edge on the tooth socket slot bottom length direction is equipped with arc surface；Grinding fixture includes installation unit, positioning unit and grinding unit, and the installation unit is for propping cutter body to be processed, and the positioning unit is for limiting rotation of the cutter body on installation unit, cutting edge face of the grinding unit for cutter tooth of polishing；Wherein, installation unit is between positioning unit and grinding unit；After the processing technology of circular knife is wire cutting, grinding is carried out to cutting edge face using grinding fixture.The present invention can be while guaranteeing knuckle-tooth knife sharpness, moreover it is possible to increase its service life, under the fixation of grinding fixture, facilitate accurate grinding knife tool cutting edge face.
Description
Technical field
The invention belongs to technical field of mechanical cutters, more specifically to a kind of plastic crusher knuckle-tooth knife and its
Grinding fixture, processing technology.
Background technique
Plastic crusher is the particle that the processing such as the plastics that will be discarded, rubber granulate, and reduces material size to reach
Purpose.In general, the cutting work of pulverizer is to match progress by knuckle-tooth knife and stationary knife, wherein pass through knuckle-tooth knife
High speed rotation and stationary knife, which generate, to be sheared to achieve the purpose that shred material, and adjustable knuckle-tooth knife shreds the big of partial size to control
It is small.
Can be described as cutter tooth for cutting the component of material on knuckle-tooth knife, knuckle-tooth knife is equipped with the cutter tooth of multiple cutting materials,
In general, cutter tooth number is more, the size for shredding material is thinner, but the probability of cutter tooth damage also will increase；And it is existing
It is mostly wedge angle transition between each cutter tooth of knuckle-tooth knife, this wedge angle is easy to be collided and generate and split in knuckle-tooth knife use process
Line reduces the service life of knuckle-tooth knife.Therefore, how the configuration of knuckle-tooth knife designs, and could not only keep the sharp of blade, but also
Make blade have some strength without tipping in use, is the direction of major Corporation R & D.
For example, Chinese Patent Application No. is 201721339875.X, application publication date is the patent text on May 4th, 2018
Part discloses a kind of pulverizer detachable hobboing cutter.The hobboing cutter of the patent includes cutter shaft, is provided with several on the periphery of cutter shaft
The groove of equidistantly distributed is plugged with blade in groove, and the end face of the cutter shaft is provided with the arc being connected with groove
Slot, the interior fixation kit for being equipped with limitation blade and skidding off groove of arc groove, the bottom of blade is plugged in groove, to the two sides of blade
It is limited on cutter shaft, blade is limited along cutter shaft axis direction by fixation kit, reduce what blade was detached from out of groove
Situation is mounted on cutter shaft so that blade is more stable；When needing removal of inserts, fixation kit need to only be taken out of arc groove
Out, and arc groove the space occupied is small, convenient for disassembling blade from cutter shaft.It is obvious that the patent overcomes blade
Local damage needs replacing the problem of entire hobboing cutter, which is spliced by multiple components, although being convenient for changing thereon
Blade, it is also not strong just because of the junction load of splicing, in the actual production process, impact force of the junction by material
Blade easy to damage；And the fixation kit on the hobboing cutter for limit, it will affect the fineness of crushing material, or even in high speed rotation
Centrifugal force being subject in the process or so, junction easily loosen；Finally, the blade of the hobboing cutter splices on cutter shaft, splicing
Junction is unavoidably wedge angle, is easy to be collided and generate loosening, reduces the service life of hobboing cutter.
On the other hand, the cutter after normal cutting processing, there is the small spike lines of many protrusions, these points on cutting edge
Peak is very sharp but also very fragile, frangibility, causes cutting force to increase after the small spike fracture in rear portion, generation heat is more, influences knife
The sharpness of tool even results in cutter and bursts apart damage, shortens cutting-tool's used life.On the other hand, in the polishing of knuckle-tooth knife
In the process, it since knuckle-tooth knife is circle, is not fixed easily, and the polishing in the cutting edge face of different knife edge angulars, grinding device need to be adapted to
While guaranteeing grinding accuracy, it should also meet the requirement of cutting edge surface roughness, there are some difficulty.
For example, Chinese Patent Application No. is 201810448887.9, application publication date is the patent on the 21st of September in 2018 text
Part discloses a kind of sharpening fixture of tooth form circular knife.The sharpening fixture of the patent includes sliding block, pillar and connecting tube, pillar
Front surface is provided with cutter parameters table, and pillar is adhesively fixed with the cutter parameters table, and the bottom surface of pillar is provided with pedestal, pillar
It is fixed with tube chamber welds with base, the left surface of pillar is provided with grinding wheel, and pillar is fixedly connected with grinding wheel, and shield is provided with above grinding wheel
Cover；Two fixed plates, connecting tube and adjusting rod are also set up on sharpening fixture, can use two fixed plates, connecting tube and adjusting
The circular knife of processing is fixed in bar, glance off circular knife will not in process, so that circular knife be made to process
After the completion, can achieve original specification, and also set up cooling fin on fixture of whetting a knife, can use cooling fin to circular knife into
Row heat dissipation, prevents it to be broken, to achieve the effect that easy to use.But using the fixture to knuckle-tooth knife of the invention
It is processed, catcher mark can be generated on knuckle-tooth knife, influence the grinding accuracy on cutting edge face.
Therefore, in order to facilitate positioning process, increase the sharpness of knuckle-tooth knife, need to develop a kind of plastic crusher knuckle-tooth
The grinding fixture and processing technology of knife.
Summary of the invention
1. to solve the problems, such as
The present invention provides a kind of plastic crusher knuckle-tooth knives, by the way that multiple cutters tooth, and the junction of each cutter tooth is arranged
Make its object is to solve the problems, such as that knuckle-tooth knife is also easy to produce crackle by the collision of material increasing knuckle-tooth knife for arc surface
While with the service life, it is ensured that the partial size of particle is more tiny.
The present invention also provides a kind of plastic crusher grinding fixtures of knuckle-tooth knife, and its object is to solve knuckle-tooth shape
The problem of knuckle-tooth knife is not fixed easily.
The present invention also provides a kind of processing technologys of plastic crusher knuckle-tooth knife, and its object is to solve existing milling to add
The sharpness of the plastic crusher knuckle-tooth knife of work is insufficient, and easy the problem of bursting apart.
2. technical solution
To solve the above-mentioned problems, the technical solution adopted in the present invention is as follows:
A kind of plastic crusher knuckle-tooth knife, including cutter body, cutter body is equipped with cutter tooth and mounting hole, on cutter tooth
Equipped with cutting edge face；The cutter body is cylindrical shape, is uniformly distributed n cutter tooth on peripheral length direction, wherein 30≤n
≤ 50, the angle between cutting edge face on adjacent cutter tooth is α, 7.2 °≤α≤12 °, forms tooth socket between two neighboring cutter tooth, institute
The edge stated on tooth socket slot bottom length direction is equipped with arc surface.
Preferably, the preferred n=40 of the number of the cutter tooth.
Preferably, the radius of the arc surface is R, 0.7mm≤R≤1.3mm.
Preferably, the basil that the cutting edge face is formed on cutter tooth be θ, 50 °≤θ≤60 °.
A kind of grinding fixture of above-mentioned plastic crusher knuckle-tooth knife, including installation unit, positioning unit and grinding unit,
The installation unit is for propping cutter body to be processed, and the positioning unit is for limiting cutter body in installation unit
Rotation, the grinding unit is used for the cutting edge face of cutter tooth of polishing；Wherein, installation unit be located at positioning unit and grinding unit it
Between.
Further, the installation unit includes mounting portion and limiting section, and the mounting portion is that limiting section is single close to positioning
The head face hump part of first side, in grinding action, in the mounting hole of the mounting portion cooperation insertion cutter body, the limit
The displacement of portion's limitation cutter body.
Further, the installation unit further includes support, and the support is located at below limiting section, is used for installation unit
It fixes on the table.
Further, the positioning unit includes latch, in grinding action, the latch cooperation insertion cutter sheet
In the tooth socket of body, the rotation of cutter body is limited.
Further, the positioning unit further includes the axle sleeve successively to connect, fixed link and fixing seat；The side of the axle sleeve
Face is equipped with screw rod, and the inside on sleeve length direction is equipped with through-hole, and the connection type between the latch and axle sleeve through-hole is
It is threadedly coupled；Kidney slot A is opened up on the length direction of the fixed link, axle sleeve is fastened by nut and connected by cooperation insertion screw rod
It connects in fixed link；Kidney slot B is opened up on the length direction of the fixing seat, fixing seat is fixed on workbench by fitted bolt
On.
Further, the grinding unit includes grinding wheel and dresser, and the grinding wheel is described for cutting edge face of polishing
Dresser is located at the underface of grinding wheel, wherein dresser is used to modify the flour milling of grinding wheel, can accurately modify flour milling
Upper tiny circular arc and angle, the grinding wheel after making finishing can achieve very high precision.
Further, the dresser includes diamond pen, telescopic pin and shaft, and the diamond pen is located at the top of shaft
End, for modifying the flour milling of grinding wheel；Telescopic pin is inserted into the side of shaft, and contacts the bottom end of diamond pen, for controlling diamond pen
Height.When modifying grinding wheel, it is inserted into telescopic pin, can contact the flour milling of grinding wheel at the top of diamond pen；When stopping finishing grinding wheel, take
The height of telescopic pin out, diamond pen reduces, flour milling of the top far from grinding wheel.
Further, the installation unit and positioning unit are fixed on die holder, and the grinding unit is fixed on workbench
On, wherein die holder can slide on the table.
A kind of plastic crusher application method of the grinding fixture of knuckle-tooth knife, the steps include:
(1) grinding fixture is assembled；
(2) mounting hole of cutter body is fitted on the mounting portion of installation unit, rotary cutter ontology makes to be added
The cutting edge of work is face-up；
(3) latch is inserted into tooth socket, is in cutting edge face to be processed and is relatively close to horizontal position；
(4) mobile mold base makes the cutting edge face to be processed of cutter body be located at the grinding position immediately below grinding wheel, using grinding wheel
It is ground cutting edge face；
(5) step (2)~(4) are repeated, another cutting edge face is ground, until the cutting edge face on cutter body has been polished
Until finishing.
Further, in the step (2), installation unit further includes limiting section, and mounting portion is the protrusion of limiting section one end
Part, cutter body are movably arranged on mounting portion, and limiting section is for limiting displacement of the cutter body on mounting portion.
Further, in the step (3), according to the value of θ/α or the value of (180 ° of-θ)/α, by latch insertion from to
Number is played in the adjacent cutting edge face in the cutting edge face of processing, between the value of θ/α or the adjacent two integers cutting edge face of value of (180 ° of-θ)/α
In tooth socket, cutting edge face to be processed at this time is in and is relatively close to horizontal position；
Further, after the step (4) or step (5) terminate wheel grinding work, lift the gold on dresser
Rigid pen is inserted into telescopic pin, makes the surface of diamond pen contact grinding wheel, rotates grinding wheel, the finishing on surface is carried out to grinding wheel.
A kind of processing technology of plastic crusher knuckle-tooth knife, cutter body use line cutting technology moulding, and wire cutting is made
After type, polished using above-mentioned grinding fixture cutting edge face.
3. beneficial effect
Compared with the prior art, the invention has the benefit that
(1) edge of knuckle-tooth cutter tooth slot of the invention is arc surface, and in knuckle-tooth knife use process, particle collides side
At edge, can with disperses impact forces, prevent edge be wedge angle when, sharp corner impact force concentrate, make sharp corner collision cleft, generation is split
Line, meanwhile, also reducing material influences the revolving speed of blade in the blocking of tooth socket；Tooth socket is arranged to rounded square slot, compared to
For right angle square groove, the wedge angle in square groove slot is also easy to produce crackle, and the relatively uniform dispersion of impact force suffered in arc chord angle
To each point, the axle center of cylinder, reduces the spoilage of blade, increases blade where each point Impact direction may extend past arc chord angle
Service life；The present invention also optimizes the setting of circular arc radius surface, is that can satisfy processing substantially in 0.7~1.3mm in radius
Demand；
(2) cutter tooth of blade of the present invention is equipped with 30 to 50, when number of teeth is less than 30, the cutting force of cutter body
Deficiency, particle it is oversized；When number of teeth is more than 50, cutter tooth processing is excessively complicated, at high cost, and it is raw to be unfavorable for batch
It produces；The number of cutter tooth preferably 40, during processing materials, the revolving speed of cutter body is greater than the revolving speed of material, guarantees material
It can be cut by each cutter head on cutter tooth, the size that material is torn up is more tiny, meets and requires to compare to crushing size
High materiel machining；
(3) basil that the cutting edge face on cutter tooth of the present invention is formed is 50 °~60 °, in comminuting matter, gives different directions
Shearing force, guarantee that the particle size of crushing material is smaller；
(4) grinding fixture of the invention can more accurately position cutting edge face, and cutting edge face is made to be located at optimal polishing position；
By the way that blade body to be movably arranged on the mounting portion of installation unit, can be convenient replacement need to process cutting edge face, installation unit
Limiting section resist cutter body, avoid cutter body from moving on mounting portion, guarantee the precision of wheel grinding；By in tooth socket
Interior insertion latch, prevents the rotation of cutter body, guarantees that cutting edge face to be processed is in Working position always；
(5) installation unit of grinding fixture of the present invention and positioning unit are used cooperatively, avoid existing clamp with
The contact area of workpiece is excessive, not easy heat radiation, leads to cutter body hot-spot, is also easy to produce the phenomenon that bursting apart in grinding process；
(6) fixed link and fixing seat of grinding fixture positioning unit of the present invention are equipped with waist-shaped hole, are convenient for screw rod or bolt
Fixation position adjustment, can according to need the latch of positioning unit and carry out adjustment up and down；Latch uses
The mode of threaded connection is inserted into axle sleeve, while latch can stretch in axle sleeve, also between holding latch and axle sleeve
Close connection, scalable fixed stop pin in this way can be entire without disassembly after the completion of once grinding work
Positioning unit can easily replace the tooth socket of latch insertion；
(7) it is equipped with dresser below the grinding wheel of grinding unit of the present invention, it can be right when grinding wheel is by small abrasion
Wheel face is modified, no replacement is required grinding wheel, is increased the service life of grinding wheel, is guaranteed the grinding accuracy of abrading article；Wherein, sand
Diamond pen on wheel dresser it is scalable and be movably arranged in its cooperation mounting hole in, by the side of dresser
The installation of telescopic pin pulls out telescopic pin, reduces diamond pen when not needing finishing grinding wheel, far from grinding wheel, when finishing grinding wheel
When, it is inserted into telescopic pin, so that diamond pen is increased to the coarse place of contact wheel face, carries out the recondition of grinding wheel；
(8) installation unit of the invention and positioning unit are mounted on same die holder, and grinding unit does not reside at
It states on die holder, guarantees that installation unit and positioning unit have installed and fixed cutter body in the position far from grinding unit, it can be with
The grinding position for being sent into grinding unit together is polished, time saving and energy saving, is improved work efficiency；
(9) processing technology of the invention polishes to cutting edge face after cutting on line, and face can go out after avoiding wire cutting
Existing small spike lines, i.e., on the one hand rough phenomenon improves the sharpness of cutter, and then make the size of comminuting matter
It is more tiny；On the other hand, the shock at small spike lines by material is avoided, and is cracked, the use of cutter is improved
Service life；So stress raisers are reduced, to improve using preceding having to polish in small spike lines raised on cutting edge face
Impact strength extends cutting-tool's used life.
Detailed description of the invention
Fig. 1 is the main view of knuckle-tooth knife of the present invention；
Fig. 2 is the partial enlarged view of a-quadrant in Fig. 1；
Fig. 3 is the left side view of grinding fixture of the present invention；
Fig. 4 is the partial enlarged view of B area in Fig. 3；
Fig. 5 is the right side view of grinding fixture of the present invention；
Fig. 6 is the structural schematic diagram that latch of the present invention and axle sleeve are used cooperatively；
Fig. 7 is the structural schematic diagram of dresser of the present invention；
In figure:
100, cutter body；110, cutter tooth；111, cutting edge face；120, tooth socket；121, arc surface；130, mounting hole；131,
Keyway；200, installation unit；210, mounting portion；220, limiting section；230, support；300, positioning unit；310, latch；320,
Axle sleeve；321, screw rod；330, fixed link；331, kidney slot A；340, fixing seat；341, kidney slot B；400, grinding unit；410,
Grinding wheel；420, dresser；421, diamond pen；422, telescopic pin；423, shaft；500, die holder.
Specific embodiment
The present invention is further described below combined with specific embodiments below.
Embodiment 1
As shown in Figure 1, a kind of plastic crusher knuckle-tooth knife, the cutter body 100 including cylindrical shape, cutter body
Cutter tooth 110, tooth socket 120 and mounting hole 130 are opened up on 100, cutter tooth 110 is equipped with 40, is evenly distributed on cutter body 100
On peripheral length direction, cutter tooth 110 be equipped with cutting edge face 111, as shown in connection with fig. 2, cutting edge face 111 formed the basil be θ, θ=
55 °, the angle α formed between the cutting edge face 111 on two neighboring cutter tooth 110 is 9 °；Tooth socket 120 is two neighboring cutter tooth 110
Between the space that is formed, be arc chord angle square groove, i.e. edge on 120 slot bottom length direction of tooth socket is equipped with arc surface 121,
Wherein the radius of arc surface 121 is 1mm, prevents 120 slot bottom of tooth socket from forming wedge angle, and wedge angle is during crushing, material collision
Wedge angle, by biggish impact force, sharp corner is also easy to produce crackle, and leads to tool damage；Mounting hole 130 is circular through hole, is led to
It is equipped with rectangular keyway 131 at the one of hole, for cooperating pulverizer to install the knuckle-tooth knife of the present embodiment, processes the cutting edge of knuckle-tooth knife
When face 111, the fixation of installation unit 200 can be used for.
In general, the knuckle-tooth knife of shape above-mentioned for processing, the especially excessive cutter of 110 number of cutter tooth, it is clear that make
It is time-consuming and laborious with the molding of milling machine cutting processing, it is unfavorable for industrialized production, the prior art is mostly cut by the way of wire cutting
Molding, for the workpiece that surface roughness requires, the molybdenum filament diameter needs of wire cutting are smaller, can just substantially meet cut surface
Roughness requirements.The cutting edge face 111 of cutter is the key that cutter sharpness, therefore cutting edge face 111 needs smooth enough to be just able to satisfy
Rough in crushing requirement or even cutting edge face 111, small spike lines thereon will receive the shock fracture of material, and cutter tooth 110 is easy
It collapses out, and entire knuckle-tooth knife is scrapped, therefore inventor improves the processing technology of knuckle-tooth knife, i.e., after cutting on line, also to cutter sheet
Cutting edge face 111 on body 100 has carried out fine grinding processing.
However, the knuckle-tooth knife due to the present embodiment is cylindrical shape, it is not easy to grip, and its 110 number of cutter tooth is more, it is existing
Some fixtures touch cutting edge face 111 during clamping can wear cutting edge face 111, therefore, mill of the inventor in knuckle-tooth knife
During cutting, its dedicated grinding fixture has been invented.
Specifically, a kind of grinding fixture of above-mentioned plastic crusher knuckle-tooth knife, as shown in Figure 3 and Figure 4, including installation
Unit 200, positioning unit 300 and grinding unit 400, installation unit 200 between positioning unit 300 and grinding unit 400,
And installation unit 200 and positioning unit 300 are fixed on same die holder 500.Wherein, installation unit 200 is to be processed for propping
Cutter body 100, positioning unit 300 is for limiting rotation of the cutter body 100 on installation unit 200, grinding unit 400
Cutting edge face 111 for cutter tooth 110 of polishing.
Installation unit 200 includes mounting portion 210, limiting section 220 and support 230, and support 230 is fixed on die holder 500, is limited
Portion 220 is fixed at the top of support 230, and shape is cylindrical body, cube or other shapes, as long as meeting limiting section
220 face size is greater than the size of 100 upper installing hole 130 of cutter body；Mounting portion 210 is the head face hump of limiting section 220
Part is cylindrical shape, and diameter is less than or equal to the diameter of the mounting hole 130 on cutter body 100, for cooperating insertion
Cutter body 100 is propped in the mounting hole 130 of cutter body 100, cutter body 100 can rotate on mounting portion 210 at this time, but
Due to the presence of limiting section 220, limiting section 220 blocks movement of the cutter body 100 on mounting portion 210, convenient for grinding work
When, the position of fixed cutting tool ontology 100.
As shown in Figure 4 and Figure 5, positioning unit 300 is set to the side of mounting portion 210, including latch 310, fixed bit
The latch 310 set, cooperation is inserted into the tooth socket 120 of cutter body 100, for limiting cutter body 100 in mounting portion 210
Rotation, make cutting edge face 111 to be processed be in be relatively close to horizontal position.However the fixed mode of this latch 310
There is its limitation, the cutting edge face 111 of replacement processing also needs disassembly latch 310 every time.In order to facilitate processing, positioning unit
300 further include axle sleeve 320, fixed link 330 and fixing seat 340.As shown in fig. 6, the inside on 320 length direction of axle sleeve is equipped with band
The through-hole of screw thread, the latch 310 of the interior insertion matching thread connection of through-hole, latch 310 are rotated with the lines of screw thread, are realized
Displacement on its length direction, also, guarantee latch 310 when do not rotate, latch 310 limits it in axis by screw thread
It is flexible in set 320；The side of axle sleeve 320 is additionally provided with threaded screw rod 321.The length direction of fixed link 330 is equipped with waist
Screw rod 321 in shape hole A331, kidney slot A331 on cooperation insertion axle sleeve 320, then axle sleeve 320 is fixed on by fixation by nut
On bar 330, and the position of the insertion of screw rod 321 kidney slot A331 is different, the height of adjustable axle sleeve 320, and then to stop
The height of pin 310 is adjusted；The bottom of fixed link 330 is fixed in fixing seat 340.It is opened on the length direction of fixing seat 340
If kidney slot B341, fixing seat 340 is fixed on die holder 500, adjustable bolt is inserted by kidney slot B341 cooperation insertion bolt
Enter the position in kidney slot B341, and then adjusts the distance between positioning unit 300 and installation unit 200.
Grinding unit 400 includes grinding wheel 410 and dresser 420, and grinding wheel 410 is fixed in grinding wheel fixing seat 340, and
It is electrically connected grinding wheel 410 by switch, that is, passes through the rotation of switch control grinding wheel 410, to be ground cutting edge face 111 to be processed；Sand
Wheel dresser 420 is mounted on the underface of grinding wheel 410, and top is provided with diamond pen 421, when 410 surface irregularity of grinding wheel,
Fixed emery wheel trimmer 420 is installed, diamond pen 421 thereon just contacts the out-of-flatness surface of grinding wheel 410, turns on the switch, sand
The surface of out-of-flatness can be polished to required shape by 410 rotation of wheel, diamond pen 421.It is worth noting that in actual factory
In processing, since the workpiece surface hardness that grinding wheel 410 is ground is excessively high, 410 surface of grinding wheel is easy impaired, frequently installation, disassembly sand
420 heavy workload of wheel dresser increases the process-cycle, therefore the diamond pen that designing can be flexible up and down in dresser 420
421, as shown in fig. 7, specifically, dresser 420 includes shaft 423, diamond pen 421 and telescopic pin 422, shaft 423
Bottom be fixed on the workbench immediately below grinding wheel 410, the upper end of shaft 423 opens up the hole stretched for diamond pen 421, axis
The hole that the side of bar 423 opens up connection the upper end paves diamond pen 421, is in diamond pen 421 for being inserted into telescopic pin 422
The grinding position of grinding wheel 410.
According to the description of the above-mentioned grinding fixture structure to plastic crusher knuckle-tooth knife, here is making for this grinding fixture
With method, the steps include:
(1) installation unit 200 is fixed on die holder 500 by its support 230, positioning unit 300 passes through its fixing seat
340 are fixed on die holder 500, and are located at the side of 200 upper mounting portion 210 of installation unit；
(2) mounting hole 130 of cutter body 100 is fitted on the mounting portion 210 of installation unit 200, installation is single
The limiting section 220 of member 200 blocks cutter body 100, limits it in the movement of mounting portion 210, rotary cutter ontology 100, make to
The cutting edge face 111 of processing is upward；
(3) calculating its value of θ/α=55 °/9 ° is about 6.11, i.e., from cutting edge face 111 adjacent with cutting edge face 111 to be processed
Play number, the tooth socket 120 between the 6th cutting edge face 111 and the 7th cutting edge face 111, as the positioning tooth socket 120 of latch 310；
Latch 310 is rotated, is inserted it into tooth socket 120, cutting edge face 111 to be processed at this time is in and is relatively close to level
Position；
(4) after fixing cutter body 100, die holder 500 is moved to, makes the cutting edge face 111 to be processed of cutter body 100
Grinding position immediately below grinding wheel 410, turns on the switch, and is ground cutting edge face 111 using grinding wheel 410；
(5) step (2)~(4) are repeated, the cutting edge face 111 that need to be ground is replaced, until by 40 cutting edges on cutter body 100
Face 111 is polished finish until, at this time complete the present embodiment knuckle-tooth knife cutting edge face 111 grinding.
Embodiment 2
A kind of plastic crusher of the present embodiment knuckle-tooth knife and its grinding fixture, processing technology are substantially the same manner as Example 1,
The difference is that: cutter tooth 110 is equipped with 30, i.e., the angle α formed between the cutting edge face 111 on two neighboring cutter tooth 110
It is 12 °；The basil that cutting edge face 111 is formed is θ, θ=50 °；The radius of arc surface 121 is 1.3mm.
According to the description of the above-mentioned grinding fixture structure to plastic crusher knuckle-tooth knife, here is making for this grinding fixture
With method, the steps include:
(1) installation unit 200 is fixed on die holder 500 by its support 230, positioning unit 300 passes through its fixing seat
340 are fixed on die holder 500, and are located at the side of 200 upper mounting portion 210 of installation unit；
(2) mounting hole 130 of cutter body 100 is fitted on the mounting portion 210 of installation unit 200, installation is single
The limiting section 220 of member 200 blocks cutter body 100, limits it in the movement of mounting portion 210, rotary cutter ontology 100, make to
The cutting edge face 111 of processing is upward；
(3) calculating its value of θ/α=50 °/12 ° is about 4.17, i.e., from cutting edge face adjacent with cutting edge face 111 to be processed
111 numbers, the tooth socket 120 between the 4th cutting edge face 111 and the 5th cutting edge face 111, as the positioning tooth socket of latch 310
120；
Latch 310 is rotated, is inserted it into tooth socket 120, cutting edge face 111 to be processed at this time is in and is relatively close to level
Position；
(4) after fixing cutter body 100, die holder 500 is moved to, makes the cutting edge face 111 to be processed of cutter body 100
Grinding position immediately below grinding wheel 410, turns on the switch, and is ground cutting edge face 111 using grinding wheel 410；
(5) step (2)~(4) are repeated, the cutting edge face 111 that need to be ground is replaced, until by 30 cutting edges on cutter body 100
Face 111 is polished finish until, at this time complete the present embodiment knuckle-tooth knife cutting edge face 111 grinding.
Embodiment 3
A kind of plastic crusher of the present embodiment knuckle-tooth knife and its grinding fixture, processing technology are substantially the same manner as Example 1,
The difference is that: cutter tooth 110 is equipped with 50, i.e., the angle α formed between the cutting edge face 111 on two neighboring cutter tooth 110
It is 7.2 °；The basil that cutting edge face 111 is formed is θ, θ=60 °；The radius of arc surface 121 is 0.7mm.
According to the description of the above-mentioned grinding fixture structure to plastic crusher knuckle-tooth knife, here is making for this grinding fixture
With method, the steps include:
(1) installation unit 200 is fixed on die holder 500 by its support 230, positioning unit 300 passes through its fixing seat
340 are fixed on die holder 500, and are located at the side of 200 upper mounting portion 210 of installation unit；
(2) mounting hole 130 of cutter body 100 is fitted on the mounting portion 210 of installation unit 200, installation is single
The limiting section 220 of member 200 blocks cutter body 100, limits it in the movement of mounting portion 210, rotary cutter ontology 100, make to
The cutting edge face 111 of processing is upward；
(3) calculating (180 ° of-θ) its value of/α=120 °/7.2 ° is about 16.67, i.e., from the phase with cutting edge face 111 to be processed
Number is played in adjacent cutting edge face 111, the tooth socket 120 between the 16th cutting edge face 111 and the 17th cutting edge face 111, as latch 310
Position tooth socket 120；
Latch 310 is rotated, is inserted it into tooth socket 120, cutting edge face 111 to be processed at this time is in and is relatively close to level
Position；
(4) after fixing cutter body 100, die holder 500 is moved to, makes the cutting edge face 111 to be processed of cutter body 100
Grinding position immediately below grinding wheel 410, turns on the switch, and is ground cutting edge face 111 using grinding wheel 410；
(5) step (2)~(4) are repeated, the cutting edge face 111 that need to be ground is replaced, until by 50 cutting edges on cutter body 100
Face 111 is polished finish until, at this time complete the present embodiment knuckle-tooth knife cutting edge face 111 grinding.
Claims (10)
1. a kind of plastic crusher knuckle-tooth knife, including cutter body (100), cutter body (100) be equipped with cutter tooth (110) and
Mounting hole (130), cutter tooth (110) are equipped with cutting edge face (111), it is characterised in that: the cutter body (100) is cylindrical body
Shape is uniformly distributed n cutter tooth (110) on peripheral length direction, wherein 30≤n≤50, between two neighboring cutter tooth (110)
It is formed tooth socket (120), the edge on tooth socket (120) the slot bottom length direction is equipped with arc surface (121).
2. a kind of plastic crusher knuckle-tooth knife according to claim 1, it is characterised in that: the arc surface (121)
Radius is 0.7~1.3mm.
3. a kind of plastic crusher knuckle-tooth knife described in any one according to claim 1~2, it is characterised in that: the sword
The basil that mouthful face (111) is formed on cutter tooth (110) is θ, 50 °≤θ≤60 °.
4. a kind of grinding fixture of knuckle-tooth knife of plastic crusher described in claims 1 to 3, it is characterised in that: single including installation
First (200), positioning unit (300) and grinding unit (400), the installation unit (200) is for propping cutter sheet to be processed
Body (100), the positioning unit (300) is for limiting rotation of the cutter body (100) on installation unit (200), the mill
Cut the cutting edge face (111) of unit (400) for cutter tooth (110) of polishing；Wherein, installation unit (200) is located at positioning unit (300)
Between grinding unit (400).
5. a kind of grinding fixture of plastic crusher knuckle-tooth knife according to claim 4, it is characterised in that: the installation
Unit (200) includes mounting portion (210) and limiting section (220), and the mounting portion (210) is that limiting section (220) are single close to positioning
The head face hump part of first (300) side, in grinding action, the peace of mounting portion (210) cooperation insertion cutter body (100)
It fills in hole (130), the displacement of limiting section (220) limitation cutter body (100).
6. a kind of grinding fixture of plastic crusher knuckle-tooth knife according to claim 4, it is characterised in that: the positioning
Unit (300) includes latch (310), in grinding action, latch (310) cooperation insertion cutter body (100)
In tooth socket (120), the rotation of cutter body (100) is limited.
7. a kind of grinding fixture of plastic crusher knuckle-tooth knife according to claim 6, it is characterised in that: the positioning
Unit (300) further includes the axle sleeve (320) successively to connect, fixed link (330) and fixing seat (340)；
The side of the axle sleeve (320) is equipped with screw rod (321), and the inside on axle sleeve (320) length direction is equipped with through-hole, described to stop
Connection type between dynamic pin (310) and axle sleeve (320) through-hole is to be threadedly coupled；
It is opened up kidney slot A (331) on the length direction of the fixed link (330), cooperation insertion screw rod (321), by axle sleeve (320)
It is fastenedly connected on fixed link (330) by nut；
Kidney slot B (341) are opened up on the length direction of the fixing seat (340), fixing seat (340) are fixed on work by fitted bolt
Make on platform.
8. a kind of grinding fixture of plastic crusher knuckle-tooth knife according to claim 4, it is characterised in that: the grinding
Unit (400) includes grinding wheel (410) and dresser (420), and the grinding wheel (410) is described for polishing cutting edge face (111)
Dresser (420) is located at the underface of grinding wheel (410).
9. a kind of grinding fixture of plastic crusher knuckle-tooth knife, feature according to claim 4~8 any one exist
In: the installation unit (200) and positioning unit (300) are fixed on die holder (500), and the grinding unit (400) is fixed on
On workbench, wherein die holder (500) can slide on the table.
10. a kind of plastic crusher processing technology of knuckle-tooth knife, cutter body (100) uses line cutting technology moulding, special
Sign is: after wire cutting moulding, being polished using the grinding fixture described in claim 4~9 cutting edge face (111).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910429445.4A CN110238716B (en) | 2019-05-22 | 2019-05-22 | Circular cutter for plastic crusher and grinding tool thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910429445.4A CN110238716B (en) | 2019-05-22 | 2019-05-22 | Circular cutter for plastic crusher and grinding tool thereof |
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| CN110238716B CN110238716B (en) | 2020-12-25 |
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| CN113290428A (en) * | 2021-06-16 | 2021-08-24 | 无锡微研股份有限公司 | Blade fixing plate forming process |
| CN114770238A (en) * | 2022-05-26 | 2022-07-22 | 冯兴垚 | Knife sharpener for wood cutting knife |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110238716B (en) | 2020-12-25 |
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Denomination of invention: Circular tooth cutter for plastic crusher and its grinding tooling Effective date of registration: 20221123 Granted publication date: 20201225 Pledgee: Hengshan Ma'anshan finance Company limited by guarantee Pledgor: ANHUI FENGLIRUI BLADE MANUFACTURE Co.,Ltd. Registration number: Y2022980023166 |
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