CN212552086U - Rotary blade and step-by-step feeding type rotary cutting machine - Google Patents
Rotary blade and step-by-step feeding type rotary cutting machine Download PDFInfo
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- CN212552086U CN212552086U CN202021900941.8U CN202021900941U CN212552086U CN 212552086 U CN212552086 U CN 212552086U CN 202021900941 U CN202021900941 U CN 202021900941U CN 212552086 U CN212552086 U CN 212552086U
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Abstract
The utility model discloses a rotating cutter piece and step-by-step pay-off formula rotary cutting machine, wherein, the rotating cutter piece includes: cutting part, base body portion, connecting portion and hole, wherein: the outer contour of the cutting part is an Archimedes spiral line, the outer contour of the base body part is a major arc, the origin of the cutting part is coincided with the center of the base body part, the sum of the angles of the cutting part and the base body part is 360 degrees, the starting point of the Archimedes spiral line is coincided with one end of the major arc, and the terminal point of the Archimedes spiral line is connected with the other end of the major arc through a connecting part; the center of the inner hole is coincided with the center of the base body part, and the inner hole is provided with a key groove which is used for connecting an external servo motor; the ratio of the distance from the end point of the Archimedes spiral to the origin to the distance from the starting point to the origin is 2-5. According to the rotary blade, in the whole cutting and feeding process, the rotary blade can uniformly rotate all the time without exiting from a cutting area, the radial and tangential cutting of the rotary blade is fully performed, the inertia effect of the rotary blade is performed, and the rotary blade is enabled to perform the optimal cutting efficiency.
Description
Technical Field
The utility model relates to a cutting technical field especially relates to a rotating cutter piece and step-by-step pay-off formula rotary cutting machine.
Background
At present, materials such as plant stems, plastic pipes, plastic rods, fibers, nuclear waste, waste wood strips, waste plates and the like are generally cut by a disc cutting machine or a scissor cutting machine. The disc cutting machine mainly takes radial cutting as a main part, and mainly moves a cut piece to the center direction of a disc gradually along the radial direction of the disc, so that the cutting purpose is realized. The scissors type cutting machine mainly uses tangential cutting as a main part and comprises fly cutter cutting. The scissors-type cutting is not available due to the empty return stroke, so the cutting efficiency is affected.
After the cutting of the circular cutting machine and the scissors type cutting machine is finished, in order to facilitate the material cutting step of the next process, the two cutting machines need to exit the cutting area within a certain time, and the exiting process needs time, so that the cutting efficiency of the two cutting machines is low, and therefore, the cutting machine with relatively high cutting efficiency needs to be provided.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem existing in the prior art, the embodiment of the utility model provides a rotary blade and step-by-step pay-off formula rotary cutting machine.
In a first aspect, an embodiment of the present invention provides a rotary blade, including: cutting part, base body portion, connecting portion and hole, wherein:
the outer contour of the cutting part is an Archimedes spiral line, the outer contour of the base body part is a major arc, the origin of the cutting part is superposed with the center of the base body part, the sum of the angles of the cutting part and the base body part is 360 degrees, the starting point of the Archimedes spiral line is superposed with one end of the major arc, and the terminal point of the Archimedes spiral line is connected with the other end of the major arc through the connecting part;
the center of the inner hole is coincided with the center of the base body part, and the inner hole is provided with a key groove which is used for connecting an external servo motor;
the ratio of the distance from the end point of the Archimedes spiral to the origin to the distance from the starting point to the origin is 2-5.
Preferably, the angle of the archimedean spiral is 120 ° to 160 °.
Preferably, the blade cross-sectional profile of the cutting part is a parabola with symmetrical ends.
Preferably, the blade surface of the cutting part is provided with a zirconia film.
Preferably, the connecting portion is provided with a notch.
Preferably, the notch comprises a minor arc notch.
In a second aspect, an embodiment of the present invention provides a step-by-step feeding type rotary cutting machine, which includes a servo motor, a step-by-step feeding device, a frame, and a rotary blade as in the first aspect.
Preferably, the step feeding devices are provided with two pairs, wherein one pair of step feeding devices is provided with an opening and is obliquely installed.
Preferably, the stepping feeding device comprises a stepping driving wheel, a stepping conveying chain and an auxiliary pressing wheel, and further comprises an upper plate and a lower plate which are used for clamping the cut materials and are respectively arranged on the upper side and the lower side of the stepping conveying chain.
Preferably, grooves are formed in one sides, close to the stepping conveying chains, of the upper plate and the lower plate, rolling wheels are arranged in the grooves, and friction force of the cut materials in the stepping process is reduced through the rolling wheels.
The embodiment of the utility model provides a pair of rotating cutter piece and step-by-step pay-off formula rotary cutting machine, wherein, the rotating cutter piece includes: cutting part, base body portion, connecting portion and hole, wherein: the outer contour of the cutting part is an Archimedes spiral line, the outer contour of the base body part is a major arc, the origin of the cutting part is superposed with the center of the base body part, the sum of the angles of the cutting part and the base body part is 360 degrees, the starting point of the Archimedes spiral line is superposed with one end of the major arc, and the terminal point of the Archimedes spiral line is connected with the other end of the major arc through the connecting part; the center of the inner hole is coincided with the center of the base body part, and the inner hole is provided with a key groove which is used for connecting an external servo motor; the ratio of the distance from the end point of the Archimedes spiral to the origin to the distance from the starting point to the origin is 2-5. The embodiment of the utility model provides a rotating blade, whole cutting and pay-off process, rotating blade can be evenly rotatory always, need not withdraw from cutting area territory, and the radial and tangential cutting of full play rotating blade is simultaneously, and the inertial action of performance rotating blade makes rotating blade performance best cutting efficiency.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a rotary blade according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view M-M of FIG. 1;
fig. 3 is a schematic cross-sectional view of a cutting edge of a cutting portion of a rotary blade according to an embodiment of the present invention;
fig. 4 is a line drawing of an edge provided by an embodiment of the present invention;
fig. 5 is a top view of a step-feed rotary cutting machine according to an embodiment of the present invention;
fig. 6 is a front view of a step-feed rotary cutting machine according to an embodiment of the present invention;
fig. 7 is a top view of a lower plate of a step-feed rotary cutting machine according to an embodiment of the present invention;
FIG. 8 is a D-D view of FIG. 6;
in FIGS. 1-8, 1-hopper, 2-frame, 3-step feeder, 4-cut material, 5-step conveyor chain, 6-auxiliary tightening wheel, 7-step driving wheel, 8-cut crushed material, 9-servo motor, 10-connecting key, 11-rotary blade, 12-nut, 13-safety shield, 14-upper plate, 15-lower plate, 16-roller, 17-blade notch, 18-keyway, 19-zirconia film, 20-groove.
Detailed Description
Example one
An embodiment of the utility model provides a pair of rotating blade, as shown in fig. 1, fig. 2, this rotating blade includes: cutting section 100, base section 200, connecting section 300.
The outer contour of the cutting part 100 is an archimedes spiral line, the outer contour of the base part 200 is a major arc, the origin of the cutting part 100 coincides with the center of the base part 200, and the sum of the angles of the cutting part 100 and the base part 200 is 360 degrees. In the specific implementation process, the starting point of the archimedes spiral coincides with one end of the major arc, and the terminal point is connected with the other end of the major arc through the connecting part 300. In the embodiment of the present invention, the outer edge of the cutting portion 100 is the effective cutting edge of the rotary blade. The polar equation for an archimedes' spiral is: and r is a + b theta, wherein a is the radius of the base body part 100, a is the distance from the starting point of the Archimedes spiral to the origin, namely the minimum radius distance from the rotating center point of the blade to the cut material, and r is the linear distance from the origin of the Archimedes spiral to the point of angle theta. When theta reaches thetamWhen r reaches a maximum value rmI.e. the maximum radial distance r from the centre of rotation of the blade to the material to be cutmThe distance is determined according to the cutting material, the cut size, the production efficiency and the like, and is designed to be firstly determined, and the width of the cut material is r at mostmA, considering cutting forces and cutting work consumption, rmThe/a is between 2 and 5, and in the specific implementation process, the cutting productivity is high, and the cutting productivity is low.
Due to the limitation of the manufacturing size, a cannot be too small, otherwise the strength is reduced, and the improvement of the production efficiency is not facilitated, generallyThe value is not less than 20 mm. Theta is the angle of rotation of the blade during effective cutting, and this angle is between 0 and thetamTo change between. Each blade having a maximum angle thetamThis maximum angle θmIf the angle is smaller, when the blade rotates for one circle, the effective cutting rotating speed can be improved, but the cutting force is increased, the angle is larger, the cutting force can be reduced, the effective cutting angle is increased, the stepping feeding time is reduced, the total production efficiency can be influenced, and generally theta (theta) is generally usedmThe optimal angle is 140 degrees between 120 degrees and 160 degrees, the residual 220 degrees are reserved for mechanical step feeding time, and under the design, the cutting and step feeding are coordinated and matched in working time, so that the production efficiency can be integrally improved. b is the slope of the radius r as a function of the angle of rotation theta, when rm，a,θmAfter the determination, b is determined accordingly.
The rotary blade is further provided with an inner hole 400, the circle center of the inner hole 400 is overlapped with the circle center of the base body part 200, and the inner hole 400 is provided with a key groove for facilitating the connection of the rotary blade and an external servo motor.
In one possible embodiment, as shown in fig. 3, the blade cross-sectional profile of the cutting portion 100 is a parabolic curve with symmetrical ends. If the angle of the common straight triangular blade is larger, a blunt edge can be generated after the blade is used for a period of time, and the blade is not sharp in cutting; if the angle is set to be smaller, the blade is sharp, but the blade is likely to break after being impacted and vibrated. And the embodiment of the utility model provides an in the parabola section cutting edge of both ends symmetry, relatively speaking, be difficult for producing blunt sword and tipping phenomenon, and have great bearing capacity.
Furthermore, in order to enhance the wear resistance and the impact resistance of the blade, the surface of the blade can be provided with a zirconia film, the high wear resistance and the impact resistance of a zirconia material are fully utilized, and the blade is less prone to blade passivation and resistant to impact under the design. In the specific implementation process, the thickness of the zirconia film is 1-8 μm, and the coating hardness is 1300-1800HV, and a vacuum ion plating process can be adopted. Under such design, increase the impact resistance of rotary blade, the blade cross-section is made the symmetry parabola, increases bearing capacity, has the existence of zirconia film in addition, and the life-span improves several times or ten times even, and can not take place the short time passivation, keeps permanent cutting sharp, has solved among the prior art the short problem of rotary blade life-span.
In one possible embodiment, as shown in fig. 4, one side of the cutting edge may use the equation x-y2And on the other side, in a symmetrical pattern with respect to the blade centerline, as shown in fig. 4. In an embodiment, the design rule of the blade section may be that a parabola x-y is drawn in the XOY coordinate system first2Drawing a tool center line through the origin O, which is 30 ° from the Y axis, and drawing a straight line Q parallel to the tool center line according to the blade thickness (which is determined in advance according to the actual use of the blade), as shown in fig. 4, the distance of the parallel line from the center line is half of the tool thickness, and determining the parallel line Q and a parabola x as Y2The contour line of the cross section of the cutter is composed of an OW parabola and a Q parallel line, and the contour line of the other side is obtained by symmetry of the center line of the cutter.
The base body part of the rotary blade is a non-cutting section, and the rotary blade is manufactured into a common cylindrical surface without being manufactured into a cutting blade shape.
In one possible embodiment, the cutting blade parameters may be set to: r is 300mm, a is 120mm, thetamIs 140 degrees (2.44 radians), b is 65.6mm/rad, the blade thickness is 4mm, the blade inner hole diameter is 60mm, the key slot width is 18mm, the coating thickness is 4 mu m, the coating hardness is 1500HV, the blade rotation speed is 1600 rpm, the width of the cut material is 160mm (not more than 180mm), the thickness of the cut material is 50mm, and the production cutting efficiency is 96000 pieces/hour.
In the specific implementation process, the blade base material is selected according to the properties of the material to be cut, the cutting production efficiency, the continuous working time, the impact load size and the heating temperature rise condition, and the hard alloys YG and YT are preferably selected as the blade base material for the occasions with larger impact load, high cutting speed and more heating. Or the spring steel 65Mn and the tool steel T8, T10 and the like are subjected to quenching and low-temperature medium-temperature tempering treatment.
In one possible embodiment, the rotary blade manufacturing process: manufacturing a blank, rough machining (profiling), carrying out (thermal treatment), carrying out plane grinding on two end faces, grinding an inner hole, carrying out profile grinding on a blade face of a cutter, carrying out linear cutting on a key groove, deburring, polishing the blade face of the cutter, protecting the surface except the blade edge, carrying out pretreatment on the blade edge, carrying out vacuum ion plating on zirconium oxide, checking and packaging. The zirconium oxide ion plating process parameters are as follows: vacuum degree: 0.001 to 0.08 torr, deposition rate: 1-50nm/min, preferably 20nm/min, bipolar voltage: -1 to-5 KV, preferably-3 KV, temperature: below 600 ℃, preferably 500 ℃, the coating hardness is 1300-: determined by deposition rate and thickness.
Further, the connecting portion 300 may be provided with a notch 17 in order to increase the feeding time and reduce the weight of the rotary blade. In particular implementations, the notch 17 may be a minor arc notch as shown in fig. 1.
During cutting, as shown in fig. 1, the rotary blade rotates anticlockwise, point E is a cutting starting point, point G is a cutting end point, any point between point F and point G is a feeding starting point, and point E is a feeding end point.
The embodiment of the utility model provides a rotating blade, include: cutting part, base body portion, connecting portion and hole, wherein: the outer contour of the cutting part is an Archimedes spiral line, the outer contour of the base body part is a major arc, the origin of the cutting part is superposed with the center of the base body part, the sum of the angles of the cutting part and the base body part is 360 degrees, the starting point of the Archimedes spiral line is superposed with one end of the major arc, and the terminal point of the Archimedes spiral line is connected with the other end of the major arc through the connecting part; the center of the inner hole is coincided with the center of the base body part, and the inner hole is provided with a key groove which is used for connecting an external servo motor; the ratio of the distance from the end point of the Archimedes spiral to the origin to the distance from the starting point to the origin is 2-5. The embodiment of the utility model provides a rotating blade, whole cutting and pay-off process, rotating blade can be evenly rotatory always, need not withdraw from cutting area territory, and the radial and tangential cutting of full play rotating blade is simultaneously, and the inertial action of performance rotating blade makes rotating blade performance best cutting efficiency.
Example two
Based on the same utility model concept, the embodiment of the utility model provides a step-by-step pay-off formula rotary cutting machine is still provided, as shown in fig. 5-8, including servo motor 9, step-by-step material feeding unit 3, frame 2, still include any rotary blade in embodiment one.
The servo motor 9 is installed on the frame 2, and the main shaft of the servo motor 9 is directly installed with a rotary blade 11 through a connecting key 10 and is fastened on the main shaft of the servo motor 9 by a nut 12. In the implementation process, for safety requirements, a safety protection cover 13 is arranged outside the rotary blade 11, and the safety protection cover 13 is tightly connected and fixed with the frame 2.
The stepping feeding device 3 is arranged on a platform of the frame 2, the stepping feeding type rotary cutting machine is composed of two pairs of stepping feeding devices 3, one pair of stepping feeding devices is arranged in parallel to the direction of a main shaft of the servo motor 9, the other pair of stepping feeding devices is arranged in an inclined mode with openings at two ends as shown in figure 5, feeding is facilitated, the central lines of the two pairs of stepping feeding devices 3 are consistent, and when the stepping feeding device works, four groups of feeding systems of the two pairs of stepping feeding devices 3 move in a stepping synchronous mode. The hopper 1 plays a role of guiding the primary feeding.
In the specific implementation process, each group of stepping feeding devices 3 consists of a stepping driving wheel 7, a stepping conveying chain 5 and an auxiliary pressing wheel 6. In order to clamp the cut material 4 and facilitate cutting, an upper plate 14 and a lower plate 15 are respectively arranged on the upper side and the lower side of the stepping conveyor chain 5, and the two parts of the upper plate 14 and the lower plate 15 are identical except that the installation directions are opposite. In order to reduce the friction of the feeding materials, rollers 16 are arranged on the end surfaces of the upper plate 14 and the lower plate 15 close to the stepping conveyor chain 5. In the specific implementation process, grooves 20 are respectively arranged on the end faces of the upper plate 14 and the lower plate 15 close to one side of the stepping conveying chain 5, the rollers 16 are arranged in the grooves 20, and the length direction of the rollers 16 is perpendicular to the stepping direction of the cut material 4.
Further, in order to transmit a large torque and to prevent the rotary blade 11 from rotating relative to the spindle of the servo motor 9, a connection key 10 is installed between the spindle and the rotary blade 11.
In one possible embodiment, the whole machine assembling process comprises the following steps: assembling a rack, assembling a feeding mechanism, assembling a motor, assembling a blade, integrally debugging, trial running, performing experiment on the whole machine, checking and warehousing.
When the whole machine works, the rotary blade 11 uniformly rotates in the designated direction, the point E is the cutting starting point, and the point G is the cutting end point. When the rotary blade 11 rotates from the point E to the point G, the stepping feeding device 3 stops working. F is a feeding starting point, E is a feeding end point, when the rotary blade 11 rotates from the point F to the point E, the rotary blade 11 still uniformly rotates, at the moment, the stepping feeding device 3 starts feeding, and the feeding starts when the rotary blade 11 rotates to the point F, and the point E ends. The uniform rotation of the rotary blade 11 and the continuous stepping feeding action of the stepping feeding device 3 are realized.
The embodiment of the utility model provides a step-by-step pay-off formula rotary cutting machine, during the work, the spinning blade evenly rotates, step-by-step material feeding unit is step-by-step pay-off in succession, whole working process, and the spinning blade need not withdraw from the cutting region, and the radial and tangential of full play spinning blade cuts simultaneously, and the inertial action of performance spinning blade makes the best cutting efficiency of spinning blade performance to make step-by-step pay-off formula rotary cutting machine's efficiency also reach the best.
The same and similar parts in the various embodiments in this specification may be referred to each other.
The foregoing is only a detailed description of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A rotary blade, comprising: cutting portion (100), base portion (200), connecting portion (300) and hole (400), wherein:
the outer contour of the cutting part (100) is an Archimedes spiral line, the outer contour of the base body part (200) is a major arc, the origin of the cutting part (100) is superposed with the circle center of the base body part (200), the sum of the angles of the cutting part (100) and the base body part (200) is 360 degrees, the starting point of the Archimedes spiral line is superposed with one end of the major arc, and the terminal point of the Archimedes spiral line is connected with the other end of the major arc through the connecting part (300);
the circle center of the inner hole (400) is overlapped with the circle center of the base body part (200), the inner hole (400) is provided with a key groove (18), and the key groove (18) is used for being connected with an external servo motor;
the ratio of the distance from the end point of the Archimedes spiral to the origin to the distance from the starting point to the origin is 2-5.
2. The rotary blade according to claim 1, wherein the angle of the archimedean spiral is between 120 ° and 160 °.
3. The rotary blade according to claim 1, wherein the cutting edge cross-sectional profile of the cutting portion (100) is a parabolic line with symmetrical ends.
4. The rotary blade according to claim 3, wherein the cutting edge surface of the cutting portion (100) is provided with a zirconia film (19).
5. The rotary blade according to claim 1, wherein the connecting portion (300) is provided with a notch (17).
6. Rotating blade according to claim 5, characterized in that the notch (17) comprises a minor arc-shaped notch.
7. A step-feed rotary cutting machine comprising a servo motor (9), a step-feed device (3), a frame (2), characterized in that it further comprises a rotary blade according to any one of claims 1 to 6.
8. The step feed type rotary cutting machine according to claim 7, wherein said step feed means (3) has two pairs, one of said pairs of step feed means (3) being provided with an opening and being installed obliquely.
9. The step feed type rotary cutting machine according to claim 8, wherein said step feed means (3) comprises a step drive wheel (7), a step feed chain (5) and an auxiliary pinch wheel (6), and further comprises an upper plate (14) and a lower plate (15) for clamping the cut material (4), respectively provided on the upper side and the lower side of said step feed chain (5).
10. The step-feed rotary cutting machine according to claim 9, characterized in that the upper plate (14) and the lower plate (15) are provided with a groove (20) on the side close to the step-feed conveyor chain (5), and rollers (16) are arranged in the grooves (20), so that the friction force of the cut material (4) in the step-feed process is reduced by the rollers (16).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021900941.8U CN212552086U (en) | 2020-09-03 | 2020-09-03 | Rotary blade and step-by-step feeding type rotary cutting machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021900941.8U CN212552086U (en) | 2020-09-03 | 2020-09-03 | Rotary blade and step-by-step feeding type rotary cutting machine |
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| CN212552086U true CN212552086U (en) | 2021-02-19 |
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| CN202021900941.8U Active CN212552086U (en) | 2020-09-03 | 2020-09-03 | Rotary blade and step-by-step feeding type rotary cutting machine |
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