CN107363329B - A kind of cutting machine circular knife and its cutting method - Google Patents

Abstract

The invention discloses a circular blade of a cutting machine, which comprises a circular cutterhead, a circle of cutting edges is arranged on the outer edge of the circular cutterhead; a burr knife is detachably connected to the circular cutterhead; The side of the burring knife facing the cutting edge is provided with an outwardly convex arc-shaped burring edge; the burring knife is slidably connected with the circular cutter head in the radial direction, and can be positioned on the circular cutter head through a positioning mechanism. The present invention also provides a cutting method: calculate the radius of curvature r of the arc that can be tangent to the upper surface of the workpiece, install a burr knife with a burr blade with a radius of curvature r on a circular cutter head, and slide the burr knife so that The radial distance between the burr edge on the burr knife and the center of the shaft hole of the circular cutter head is equal to; with the feed movement of the workpiece, the burr edge on the circular blade of the cutting machine is constantly tangent to the upper surface of the workpiece, and the cutting surface of the workpiece is The upper edge is ground to remove burrs. The invention can realize the function of deburring while cutting, reduces labor intensity and improves production efficiency.

Description

A kind of cutting machine circular blade and its cutting method

technical field

The invention relates to a cutter, in particular to a cutting machine circular blade used on a cutting machine.

Background technique

The cutting machine cuts the tool with the continuous rotation of the circular blade, which has the advantages of high cutting efficiency and good stability. However, burrs are inevitably left on the workpiece after cutting, which will affect the quality of the product, and the workpiece needs to be polished to remove the burrs later. This increases the workload, which is not conducive to improving production efficiency.

Contents of the invention

Aiming at the deficiencies of the above-mentioned prior art, the present invention provides a circular blade of a cutting machine, which solves the technical problem of deburring when the circular blade in the prior art can no longer cut, and can be installed on a cutting machine to realize deburring while cutting functions, reduce labor intensity and improve production efficiency.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: a cutting machine circular blade, including a circular cutter head, a shaft hole is arranged on the circular cutter head; a ring of cutting edges is fixed around the outer edge of the circular cutter head ; There are some detachable detachable detachable knives distributed on the front of the round cutter head; There is an outwardly convex arc-shaped burr edge; the burr knife is slidingly connected with the disk surface of the circular cutter head along the radial direction of the circular cutter head through a sliding mechanism, and can be positioned on the circular cutter head through a positioning mechanism.

Preferably, the sliding connection mechanism includes a chute arranged radially on the disc; above the opening of the chute, there is a slide plate attached to the front of the disc; the bottom surface of the slide is connected with a The slide block that slides in the slot; the knife back of the deburring knife is connected with the slide plate through a connecting rod.

Preferably, the positioning mechanism includes positioning bolts; the bottom of the chute is provided with several threaded holes at intervals along the radial direction of the circular cutter head; Threaded connection, so that the slide plate is pressed against the round cutter head.

Preferably, one side of the chute is provided with a scale line along the radial direction of the circular cutterhead, and the scale line takes the center of the shaft hole as a starting position.

Preferably, three burr knives with the same burr edge curvature radius are distributed on the circular cutter head; the clamp between two adjacent burr knives is 120 degrees.

The present invention also provides a cutting method using the circular blade of the cutting machine. The circular blade of the cutting machine has a radius of R and is used to be installed on the cutting machine to cut workpieces with a thickness of d; the cutting table of the cutting machine is provided with There are through slots for accommodating the round blades of the cutting machine, the cutting table has a thickness D and consists of the following steps:

Step 1: Install the circular blade of the cutting machine on the cutting machine: the circular blade of the cutting machine is connected to the rotating shaft of the cutting machine through the shaft hole on the circular cutter head, and the circular blade of the cutting machine is placed in the knife groove on the cutting table. The cutting edge of the blade is tangent to the plane of the lower surface of the cutting table;

Step 2: Place the workpiece on the upper surface of the cutting table of the cutting machine, the length direction of the workpiece is along the axis of the circular blade of the cutting machine; the feeding direction of the workpiece is perpendicular to the axial direction of the circular blade of the cutting machine; the circular blade of the cutting machine is located on one side of the workpiece ;

Step 3: Calculate the radius of curvature r of the arc that can be tangent to the upper surface of the workpiece, according to the following formula: r=R-(d+D);

Step 4: Select a burr knife with a radius of curvature of the burr edge r, install the burr knife on the circular cutter head, and slide the burr knife so that the radial distance between the burr edge on the burr knife and the center of the shaft hole of the circular blade is equal to r; then The deburring knife is locked and positioned by the positioning mechanism;

Step 5: Start the cutting machine, so that the circular blade of the cutting machine rotates, and at the same time, the workpiece is fed toward the circular blade of the cutting machine along the axis perpendicular to the circular blade of the cutting machine;

Step 6: With the feed movement of the workpiece, the cutting edge of the circular blade of the cutting machine starts to touch the side of the workpiece facing the circular blade of the cutting machine, and then gradually cuts into the workpiece from this side; with the rotation of the circular blade of the cutting machine , The burr edge on the circular blade of the cutting machine is constantly tangent to the upper surface of the workpiece, and the upper edge of the cut surface of the workpiece is ground to form a chamfer on the upper edge, thereby removing the burrs on the edge of the cut surface of the workpiece.

Compared with the prior art, the present invention has the following beneficial effects:

1. For the cutting machine circular blade of the present invention, the cutting edge on the circular cutter head can be used to cut off the workpiece. Since the burr knife is attached to the circular cutter head, in the cutting process, the circular cutter head is attached to the cut surface of the workpiece. , the burring edge of the burring knife can be ground to the upper edge of the cut surface of the workpiece.

2. Since the deburring knife and the round cutter head are detachably connected, the burring knife with different curvature radii can be selected according to the thickness of the workpiece to improve the general performance of the round blade of the cutting machine.

3. Due to the sliding connection between the burr knife and the circular cutter head, the distance between the burr edge on the burr knife and the center of the shaft hole of the circular cutter head can be adjusted, so that the burr edge can be tangent to the upper surface of the workpiece.

4. Bolts are used as the positioning mechanism, which not only realizes the positioning of the burring knife, but also realizes the detachable connection between the burring knife and the round cutter head. Setting the scale line makes it more intuitive and convenient to adjust the distance of the deburring knife.

5. Installing three deburring knives with equal curvature radii at the same time can greatly improve the efficiency of deburring.

6. The cutting method of the present invention drives the burring knife on the circular cutterhead to rotate when the circular cutterhead rotates. Since the burr edge on the burr knife is arc-shaped, the burr edge can be tangent to the upper surface of the workpiece. During the cutting process, when the circular cutter head fits the cut surface of the workpiece, the burr edge of the burr knife can be ground to the upper edge of the cut surface of the workpiece, so that a chamfer is formed on the upper edge, thereby removing the burrs on the edge of the cut surface of the workpiece. The function of deburring while cutting is realized, thereby reducing labor intensity and improving production efficiency.

Description of drawings

Fig. 1 is the front view of cutting machine circular blade in this embodiment;

Fig. 2 is the back view of the circular blade of the cutting machine in the specific embodiment;

Fig. 3 is a schematic diagram of the principle of the cutting method in this specific embodiment.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments.

As shown in Figures 1 to 2, a circular blade of a cutting machine includes a circular cutterhead 1, and the circular cutterhead 1 is provided with a shaft hole 101; ; The front of the round cutter head 1 is circumferentially distributed with some deburring knives 2 that are detachably connected to the round cutter head 1; One side of the cutting edge 103 is provided with an outwardly convex arc-shaped burr edge 201; the burr knife 2 is slidably connected with the disc surface of the circular cutter head 1 along the radial direction of the circular cutter head 1 through a sliding mechanism, and can pass through The positioning mechanism is positioned on the circular cutter head 1 .

The cutting edge 103 on the circular cutterhead 1 can be used to cut off the workpiece. Since the deburring knife 2 is attached to the circular cutterhead 1, in the cutting process, when the circular cutterhead 1 is attached to the cut surface of the workpiece, the deburring knife 2 will The burr edge 201 can be ground to the upper edge of the cut surface of the workpiece. Since the deburring knife 2 is detachably connected to the circular cutter head 1, the deburring knife 2 with different curvature radii can be selected according to the thickness of the workpiece, so as to improve the general performance of the circular blade of the cutting machine. Since the deburring knife 2 is slidingly connected with the circular cutterhead 1, the distance between the burring edge 201 on the deburring knife 2 and the center of the circular cutterhead shaft hole 101 can be adjusted, so that the burring edge 201 can be tangent to the upper surface of the workpiece.

In this specific embodiment, the sliding connection mechanism includes a chute 104 arranged radially on the round cutter head; above the opening of the chute 104 is provided a slide plate 4 that fits the front of the round cutter head 2; The bottom surface of the slide plate 4 is connected with a slide block capable of sliding along the chute 104 ; In this way, the slide plate 4 is attached to the front side of the round cutter head 1, and when the slide plate 4 slides, it can slide against the surface of the round cutter head 1, so that the deburring knife 2 can slide against the surface of the round cutter head 1 driven by the slide plate 4. The connecting rod 3 can be a straight rod whose lower surface fits the surface of the disc 1; Circular cutter head 1 motion interference occurs.

In this specific embodiment, one side of the chute 104 is provided with a scale line 105 along the radial direction of the circular cutter head 1 , and the scale line 105 takes the center of the shaft hole 101 as a starting position. In this way, when adjusting the distance between the burring edge 201 on the burring knife 2 and the center of the shaft hole 101, it is very intuitive and convenient.

In this specific embodiment, the positioning mechanism includes a positioning bolt 5; the bottom of the chute 104 is provided with several threaded holes at intervals along the radial direction of the circular cutter head 1; the lower end of the positioning bolt 5 passes through the slide plate 4, and can The threaded hole corresponding to the bottom of the chute 104 is screwed, so that the slide plate 4 is pressed against the circular cutter head 1 . In this way, it is very convenient to install and disassemble the deburring knife 2. When installing, put the slide block at the bottom of the slide plate 4 into the chute 104, the slide block and the chute 104 form a clearance fit, slide the slide plate 4, and the chute 104 pairs with the slide plate. 4 acts as a guide, so that the slide plate 4 slides radially along the circular cutter head 1 to the desired position, inserts the positioning bolt 5 from the slide plate 4 into the threaded hole at the bottom of the chute 104, and then tightens the positioning bolt 5 Positioning can be done. When the deburring knife 2 needs to be disassembled, the positioning bolt 5 is unscrewed, then the positioning bolt 5 is taken out, and finally the slider on the slide plate 4 is pulled out from the chute 104 to get final product.

In order to prevent the burr knife 2 from loosening during rotation, the threading direction of the positioning bolt 5 is the same as the rotation direction of the circular cutter head 1, so that when the burr knife 2 rotates to grind the burrs on the workpiece, it will not be caused by the positioning bolt 5. The frictional force between the slide groove 104 makes the positioning bolt 5 loose.

In this specific embodiment, the connecting rod 3 is a straight rod, and a guide groove for accommodating the connecting rod is provided on the front of the circular cutter head 1; The radial direction of the circular cutterhead 1 extends and communicates with the slide groove 104 . In this way, the guide groove can not only avoid movement interference between the connecting rod 3 and the circular cutter head 1, but also guide the connecting rod 3, so that the sliding of the deburring knife 2 along the radial direction is more stable.

In this specific embodiment, three burring knives 2 with equal curvature radii of burring blades 201 are distributed on the circular cutter head 1 ; the clamp between two adjacent burring knives 2 is 120 degrees. In this way, the efficiency of deburring can be greatly improved.

In this specific embodiment, a plurality of cooling fins 106 are distributed circumferentially on the back of the circular cutter head 1 . In this way, the heat dissipation area of the circular cutter head 1 is increased through the heat dissipation fins 106 to accelerate heat dissipation.

In this specific embodiment, the heat dissipation fins 106 are arc-shaped; one end of the heat dissipation fins 106 faces the center of the shaft hole of the circular cutter head 1 , and the other end faces the outer edge of the circular cutter head 1 . In this way, the regular arrangement of the heat dissipation ribs can not only play a role in heat dissipation, but also improve the strength of the circular cutter head 1, so that the radial direction of the circular cutter head 1 is not easy to crack and break.

In this specific embodiment, the cutting edge 103 has a body made of polycrystalline diamond; the body of the cutting edge is coated with an AlTiSiN coating; the surface of the burr edge 201 is coated with an aluminum chromium nitride coating. In this way, the blade body made of polycrystalline diamond can enhance the hardness of the cutting edge 103, and the AlTiSiN coating can enhance the toughness and wear resistance of the cutting edge 103, prolonging the service life of the cutting edge; the aluminum nitride chromium coating on the burr edge 201 The layer has corrosion resistance and oxidation resistance, prolonging the service life of the burr edge 201.

The circular blade of the cutting machine in this specific embodiment is suitable for cutting plates or profiles with a certain thickness.

As shown in Figure 3, adopt the cutting method of the circular blade of the cutting machine in this specific embodiment, the radius of the circular blade of the cutting machine is R, is used to be installed on the cutting machine, is the workpiece 7 that cutting thickness is d; Said cutting machine The cutting table 6 is provided with a knife groove 601 for accommodating the circular blade of the cutting machine (the knife groove 601 is a through groove with upper and lower openings), and the thickness of the cutting table 6 is D, including the following steps:

Step 1: install the round blade of the cutting machine on the cutting machine: the round blade of the cutting machine is connected with the rotating shaft of the cutting machine through the shaft hole on the round cutter head 1, and the round blade of the cutting machine is placed in the knife groove 601 on the cutting table, and the cutting The cutting edge 103 of the machine round blade is tangent to the plane where the lower surface of the cutting table is; Avoid slipping of the circular cutterhead 1 and ensure power transmission.

Step 2: Place the workpiece 7 on the upper surface of the cutting table 6 of the cutting machine, the length direction of the workpiece 7 is along the axis of the circular blade of the cutting machine; the feeding direction of the workpiece 7 is perpendicular to the axial direction of the circular blade of the cutting machine; the circular blade of the cutting machine is located one side of the workpiece;

Step 3: Calculate the radius of curvature r of the arc that can be tangent to the upper surface of the workpiece, according to the following formula: r=R-(d+D);

Step 4: Select a burr knife with a radius of curvature of the burr edge r, install the burr knife on the circular cutterhead, and slide the burr knife so that the radial distance between the burr edge on the burr knife and the center of the shaft hole of the circular cutterhead is equal to r; Then the deburring knife is locked and positioned by the positioning mechanism;

When adjusting the position of the deburring knife, it is very intuitive and convenient to adjust according to the scale on the round knife disc;

A burr knife with a radius of curvature r can be installed on the round cutter head, which can reduce the weight of the round cutter head and make adjustment and installation more convenient.

In order to improve the deburring efficiency, it is also possible to install three deburring knives with a radius of curvature r on the circular cutter head; the clamp between two adjacent deburring knives is 120 degrees. In this way, within the same time period, the circular cutter head rotates once, which can remove the burrs on the longer edge, which greatly improves the work efficiency.

In addition, three burr knives with different curvature radii can also be set on the circular cutter head, so that the burr knives that meet the requirements of the curvature radius can be adjusted to the working position when in use, and the remaining two burr knives can be adjusted so that they cannot be in contact with the workpiece. 7 The position where the upper surface is in contact, thus eliminating the need for frequent disassembly of the burr knife.

Step 5: Start the cutting machine, so that the circular blade of the cutting machine rotates, and at the same time, the workpiece 7 is fed towards the circular blade of the cutting machine and along the axis perpendicular to the circular blade of the cutting machine; The upper part is completely cut off, and it is the guarantee that the deburring knife can grind off the burrs in the entire width direction of the workpiece.

Step 6: With the feed movement of the workpiece 7, the cutting edge 103 of the circular blade of the cutting machine starts to touch the side of the workpiece 7 facing the circular blade of the cutting machine, and then gradually cuts into the workpiece 7 from this side; With the rotation of the circular blade, the burr edge on the circular blade of the cutting machine is constantly tangent to the upper surface of the workpiece 7, and the upper edge of the cut surface of the workpiece 7 is ground, so that a chamfer is formed on the upper edge, thereby removing the burrs on the cut surface of the workpiece. Burrs on the edges.

Claims (9)

1. a kind of cutting method, it is characterised in that：Using cutting machine circular knife, the cutting machine circular knife includes dise knife disk, circle Cutterhead is equipped with axis hole；It is surround on the outer edge of dise knife disk and is installed with a circle cutting edge；Circumferentially divide on the front of the dise knife disk It is furnished with several deburring cutters being detachably connected with dise knife disk；The disk of the deburring cutter and dise knife disk fits；The deburring cutter The arc-shaped burr sword of convex is equipped with towards the side of cutting edge；The deburring cutter is by sliding equipment along the radial direction of dise knife disk Direction and the disk of dise knife disk are slidably connected, and can be positioned on dise knife disk by detent mechanism；The cutting machine circular knife Radius is R, is the workpiece of d with cutting thickness for being mounted on cutting machine；The cutting bed of the cutting machine is equipped with for holding Receive the straight slot of cutting machine circular knife, the thickness of cutting bed is D, is included the following steps：

Step 1：Cutting machine circular knife is mounted on cutting machine：Cutting machine circular knife passes through the axis hole and cutting machine on dise knife disk Shaft be connected by power, cutting machine circular knife is placed in the cutter groove on cutting bed, the cutting edge and cutting bed of cutting machine circular knife Plane where lower surface is tangent；

Step 2：Workpiece is placed on to the cutting bed upper surface of cutting machine, the length direction of workpiece is along cutting machine circular knife axis； Axis direction of the direction of feed of workpiece perpendicular to cutting machine circular knife；Cutting machine circular knife is located at the side of workpiece；

Step 3：The radius of curvature r of circular arc that can be tangent with workpiece surface is calculated, as follows：r=R-(d+D)；

Step 4：It selects the radius of curvature of burr sword for the deburring cutter of r, deburring cutter is mounted on dise knife disk, slide deburring cutter, So that radial distance of the burr sword on deburring cutter apart from circular knife axis hole center is equal to r；Then by detent mechanism by burr Knife locking positioning；

Step 5：Starting cutting machine so that cutting machine circular knife is turned round, meanwhile, workpiece is towards cutting machine circular knife along vertical It is fed in the axis direction of cutting machine circular knife；

Step 6：With the feed motion of workpiece, the cutting edge of cutting machine circular knife comes into contact with workpiece towards cutting machine dise knife Then that one side of piece gradually enters to cut in workpiece from the side；With the revolution of cutting machine circular knife, cutting machine circular knife On burr sword it is constantly tangent with workpiece surface, and the top edge of the section of workpiece is ground so that on top edge Chamfering is formed, to remove the burr of cutting workpiece face top edge.

2. cutting method according to claim 1, it is characterised in that：The sliding equipment includes radially being arranged Sliding slot on dise knife disk；The overthe openings of the sliding slot are equipped with the slide plate being bonded with the front of dise knife disk；Skateboard bottom is connected with The sliding block that can be slided along sliding slot；The knife spine of the deburring cutter is connect by connecting rod with slide plate.

3. cutting method according to claim 2, it is characterised in that：Radial direction of the side of the sliding slot along dise knife disk Equipped with graduation mark, the graduation mark is using the center of axis hole as initial position.

4. cutting method according to claim 2, it is characterised in that：The detent mechanism includes positioning bolt；The cunning Trench bottom is equipped at intervals with several threaded holes along the radial direction of dise knife disk；The positioning bolt lower end passes through slide plate, and can be with The corresponding threaded hole in sliding slot bottom is threadedly coupled, to which slide plate to be pressed on dise knife disk.

5. cutting method according to claim 2, it is characterised in that：The connecting rod is straight-bar, the front of the dise knife disk It is equipped with the guiding groove for accommodating connecting rod；Groove is oriented to since sliding slot is towards one end of cutting edge along the radial direction of dise knife disk Direction extends, and is connected to sliding slot.

6. cutting method according to claim 2, it is characterised in that：The back side of the dise knife disk is circumferentially distributed several dissipate Hot fin.

7. cutting method according to claim 1, it is characterised in that：There are three burr sword curvature for distribution on the dise knife disk The equal deburring cutter of radius；Fixture between two neighboring deburring cutter is 120 degree.

8. cutting method according to claim 6, it is characterised in that：The radiated rib is arc-shaped；Radiated rib one End is towards the axis hole center of dise knife disk, and the other end is towards dise knife disk outer edge.

9. cutting method according to claim 1, it is characterised in that：The sword body of the cutting edge uses polycrystalline diamond system At；AlTiSiN coatings are coated on sword body；Burr sword surface is coated with aluminium nitride chrome coating.