Multi-blade disc type milling cutter

Abstract

The multi-blade disc type milling cutter comprises a cutter handle, a cutter disc and a plurality of blades, the cutter disc is circular, and the cutter handle is fixedly connected to the top of the cutter disc and extends upwards in the axial direction of the cutter disc; a plurality of cutter blade mounting grooves extending in the radial direction of the cutter head are formed in the position, close to the outer edge, of the bottom of the cutter head, the cutter blade mounting grooves are annularly distributed at equal intervals, and one cutter blade is fixedly arranged in each cutter blade mounting groove. The multiple cutter grains arranged at the bottom of the cutter head rotate around the axis of the cutter head, the diameter limitation of the milling cutter is broken when a workpiece plane is machined, the milling area can be greatly increased through one-time translation, and therefore efficiency is improved, in addition, the cutter grains are provided with the edge-folded cutting edges, and crater bosses can be milled on a large-area plane workpiece. The positions of the cutter grains in the cutter grain mounting grooves can be adjusted in the radial direction of the cutter head, so that the milling radius is changed, the minimum adjusting distance is the width of a single meshing grain, the cutter grains can be prevented from sliding due to stress during milling operation through the meshing grain, and the milling precision is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field, concretely relates to a multi-tool grain disc type milling cutter. BACKGROUND

[0002] Milling is one of the important processes in the field of mechanical processing. When processing large flat volcano rear boss, the usual practice is to use a single head milling cutter with a diameter of Φ16 or Φ20 to mill according to the set path. During processing, the milling cutter rotates circumferentially under the control of the machine tool, and moves back and forth linearly on the workpiece plane multiple times to mill row by row in a way similar to slotting. Due to the diameter limitation of the single head milling cutter, the processing efficiency is relatively low. In addition, the surface of the processed workpiece will have obvious path lines, which will greatly affect the appearance of the finished product. SUMMARY

[0003] In view of the defects in the background art, the utility model provides a multi-tool grain disc type milling cutter. Under the control of the machine tool, the plurality of tool grains provided at the bottom of the cutter disc rotate around the axis of the cutter disc. When processing a flat workpiece, the diameter limitation of the milling cutter is broken, and the milling area can be greatly increased by one-time translation, thereby improving the processing efficiency and the flatness of the workpiece processing surface.

[0004] The utility model provides a multi-tool grain disc type milling cutter, including tool handle, cutter disc and a plurality of tool grains, cutter disc is circular, tool handle is fixedly connected in the top of cutter disc and extends along the axial direction of cutter disc upwards;

[0005] A plurality of tool grain mounting grooves extending along the radial direction of the cutter disc are formed in the bottom of the cutter disc near the outer edge, and the tool grain mounting grooves are annularly and equidistantly distributed. One tool grain is fixedly arranged in each tool grain mounting groove.

[0006] Preferably, the cutter disc comprises an annular disc face, a disc hub and a plurality of disc spokes, the tool grain mounting grooves are uniformly arranged in the bottom of the annular disc face, and the tool handle is mounted on the top of the disc hub.

[0007] The disc hub is coaxially arranged with the annular disc face and located above the annular disc face.

[0008] The plurality of disc spokes are distributed in a claw-like manner, the top ends are fixedly connected with the disc hub, and the bottom ends are fixedly connected with the annular disc face.

[0009] Preferably, the tool grain comprises a tool body and a tool head which are integrally connected, and the tool head is located at one end of the tool body in the longitudinal direction.

[0010] The bottom of the tool head is in an inverted trapezoidal shape, and a tool edge is formed in the bottom end horizontal side and the front end inclined side of the inverted trapezoidal shape, and the bottom end inclined side and the front end horizontal side form a 45° angle.

[0011] Preferably, the tool head is further provided with a chip baffle, and the chip baffle is located above the tool edge.

[0012] Preferably, the bottom of the cutter particle mounting groove is opened, the cutter body is fixed in the cutter particle mounting groove by screws, the cutter body vertically penetrating is provided with a pair of straight slots, each straight slot extends along the length direction of the cutter body, and the groove bottom of the cutter particle mounting groove is provided with at least two screw holes along the length direction.

[0013] Preferably, the top wall of the cutter particle mounting groove is provided with first engagement grooves arranged along the length direction, and the top of the cutter body is provided with second engagement grooves matched with the first engagement grooves in shape.

[0014] Preferably, the cutter head is located at one end pointing to the center of the annular disc surface when the cutter particle is mounted in the cutter particle mounting groove, and the outer edge of the bottom of the annular disc surface is provided with a chamfer.

[0015] Preferably, the top of the disc hub is provided with a plurality of ribs arranged radially, and the bottom end of the cutter handle is provided with a plurality of clamping grooves corresponding to the plurality of ribs.

[0016] Preferably, the cutting edge is made of PCD material.

[0017] The beneficial effects of the utility model include: a plurality of cutter particles arranged at the bottom of the cutter disc under the control of the machine tool rotate around the axis of the cutter disc, the diameter limit of the milling cutter is broken when machining the workpiece plane, the milling area can be greatly increased by one-time translation, thereby improving the machining efficiency and the flatness of the workpiece machining surface; the cutter particle is provided with a cutting edge with a folded edge, can mill the volcanic crater boss on a large-area plane workpiece; the cutter particle can be adjusted in position along the radial direction of the cutter disc in the cutter particle mounting groove, thereby changing the milling radius, the minimum adjustment distance is the width of a single engagement groove, the cutter particle can be prevented from sliding under stress during milling operation through the engagement groove, and the milling accuracy is ensured; the cutter head is provided with a chip baffle, can shield part of the milling chips, reduce the upward angle of the chips splashing towards the middle direction of the cutter disc, and avoid the chips from splashing to the face of the operator. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be described in detail below in combination with the embodiments and drawings, in which:

[0019] Figure 1 It is the perspective view of the multi-cutter particle disc type milling cutter of the utility model.

[0020] Figure 2 It is the bottom view of the multi-cutter particle disc type milling cutter of the utility model.

[0021] Figure 3 It is the side view of the multi-cutter particle disc type milling cutter of the utility model.

[0022] Figure 4 It is the structure explosion drawing of the multi-cutter particle disc type milling cutter of the utility model.

[0023] Figure 5It is the feeding indication drawing of the rectangular plane workpiece processed by the multi-cutter grain disc type milling cutter of the utility model.

[0024] Figure 6 It is the structure indication drawing of the cutter grain.

[0025] Reference signs:

[0026] 1-cutter handle, 11-clamping groove, 2-cutter disc, 21-annular disc surface, 22-disc hub, 23-disc spoke, 24-rib, 25-chamfer, 3-cutter grain, 31-cutter body, 32-cutter head, 33-cutter edge, 34-straight slot, 35-second occlusal groove, 36-scrap baffle, 4-cutter grain installation slot, 41-screw hole, 42-first occlusal groove, 100-rectangular plane workpiece, 110-crater boss. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model more clearly understood, the utility model will be further described in detail below in combination with the drawings and examples.

[0028] Therefore, one feature indicated in the specification will be used to explain one feature of one embodiment of the utility model, and it is not suggested that each embodiment of the utility model must have the explained feature. In addition, it should be noted that the specification describes many features. Although certain features can be combined together to show possible system designs, these features can also be used in other combinations which are not explicitly explained. Therefore, unless otherwise explained, the explained combination is not intended to limit.

[0029] The principle of the utility model will be described in detail below in combination with the drawings and examples.

[0030] The utility model provides a kind of multi-cutter grain disc type milling cutter, including cutter handle 1, cutter disc 2 and several cutter grains 3, cutter disc 2 is circular, cutter handle 1 is fixedly connected at the top of cutter disc 2 and extends along the axial direction of cutter disc upwards;The bottom of cutter disc 2 is close to outer edge and is equipped with several cutter grain installation slots 4 extending along the radial direction of cutter disc, cutter grain installation slot 4 is annular equidistant distribution, and one cutter grain 3 is fixed in each cutter grain installation slot 4.

[0031] The multi-tool grain disc milling cutter of the embodiment is used for machining large plane workpieces. The inner diameter of the cutter disc 2 is 200 mm, which is much larger than 20 mm of the single-head milling cutter. According to the field measurement, a 300 mm×400 mm rectangular plane workpiece 100 is machined. Under the control of the machine tool, the plurality of tool grains 3 arranged at the bottom of the cutter disc 2 rotate around the axis of the cutter disc. Since the diameter limitation of the milling cutter is broken when machining the plane workpiece, the milling area can be greatly increased by one-time translation. Although the speed is reduced compared with the single-head milling cutter, the actual milling efficiency is still increased by about 8 times. In addition, the single-head milling cutter is processed according to the preset track line by line. This processing can be regarded as processing a plurality of shallow grooves on the surface of the plane workpiece. The plurality of shallow grooves affect the flatness, and then the visible lines consistent with the track greatly affect the overall gloss of the workpiece. When the multi-tool grain disc milling cutter is used for machining, each tool grain 3 rotates to cut the surface of the workpiece progressively as the cutter disc 2 moves, so that the lines do not appear.

[0032] In the embodiment, the cutter disc 2 includes an annular disc surface 21, a disc hub 22 and four disc spokes 23 arranged symmetrically. The four tool grain mounting grooves 4 are uniformly arranged at the bottom of the annular disc surface 21, and the tool shank 1 is mounted at the top of the disc hub 22. The top of the disc hub 22 is radially provided with three ribs 24, and the bottom end of the tool shank 1 is provided with a clamping groove 11 corresponding to the ribs 24. Through the ribs 24 and the clamping groove 11, the torsion that the connecting part can withstand can be increased. The disc hub 22 is coaxially arranged with the annular disc surface 21 and located above the annular disc surface 21. The four disc spokes 23 are distributed in a claw shape, the top end is fixedly connected with the disc hub 22, and the bottom end is fixedly connected with the annular disc surface 21. The tool grain 3 includes a tool body 31 and a tool head 32 connected integrally, and the tool head 32 is located at one end of the tool body 31 in the longitudinal direction. The bottom of the tool head 32 is in the shape of an inverted trapezoid. The bottom end horizontal side and the front end inclined side of the inverted trapezoid are provided with a cutting edge 33, and the bottom end inclined side and the front end horizontal side form a 45° angle. The cutting edge 33 formed by the bottom end horizontal side and the front end inclined side of the inverted trapezoid can mill the crater boss 110 on the large plane workpiece. The cutting edge 33 is made of PCD material to ensure sufficient hardness.

[0033] In the embodiment, the cutter particle installation groove 4 is open at the bottom, the cutter body 31 is fixed in the cutter particle installation groove 4 by screws, a pair of straight slots 34 are vertically arranged in the cutter body 31, each straight slot 34 extends along the length direction of the cutter body 31, three screw holes 41 are arranged along the length direction at the bottom of the cutter particle installation groove 4, and each screw is fixed in one screw hole 41 after passing through one straight slot 34. When the cutter particle 3 is installed in the cutter particle installation groove 4, the cutter head 32 is located at one end pointing to the center of the annular disc surface 21, and when the screws are loosened, the distance between the cutter particle 3 and the axis of the cutter head 2 can be changed through the straight slots 34, so as to finely adjust the milling radius. If the screw holes 41 are changed, the milling radius can be adjusted more greatly. In addition, the top wall of the cutter particle installation groove 4 is provided with first engagement grooves 42 arranged along the length direction, and the top of the cutter body 31 is provided with second engagement grooves 35 matched with the first engagement grooves 42 in shape. The engagement grooves can prevent the cutter particle 3 from sliding under force during milling, so as to ensure the milling accuracy. The minimum adjustment distance of the milling radius is the width of a single engagement groove.

[0034] In the embodiment, the cutting edge 33 is slightly inclined to the inside of the cutter head 2, which can guide most of the debris to fly in a parabolic trajectory to the middle part of the cutter head 2, so as to reduce the amount of debris on the travel route of the cutter head 2. The cutter head 32 is also provided with a debris baffle 36 located above the cutting edge 33. The debris baffle 36 can block part of the milling debris, reduce the elevation angle of the milling debris flying to the middle part of the cutter head 2, and avoid the debris splashing to the face of the operator. These debris may not only hurt the eyes of the operator, but also may burn the skin of the face.

[0035] In the embodiment, the outer edge of the bottom of the annular disc surface 21 is provided with a chamfer 25, which can reduce the blocking of the debris, so that the debris with a large splashing elevation angle can fly out of the workpiece range as much as possible, and avoid too much debris on the travel route of the cutter head 2 to affect the milling accuracy.

[0036] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A multi-tooth disc milling cutter, characterized by, It comprises a handle, a disc and a plurality of particles, the disc is circular, the handle is fixedly connected to the top of the disc and extends axially along the disc upwardly; A plurality of particle installation grooves are arranged on the bottom of the disc near the outer edge and extend radially along the disc, the particle installation grooves are annularly and equidistantly distributed, and one particle is fixedly arranged in each particle installation groove.

2. The multi-tooth disc cutter of claim 1 wherein, The disc comprises an annular disc face, a hub and a plurality of spokes, the particle installation grooves are uniformly arranged on the bottom of the annular disc face, and the handle is installed on the top of the hub; The hub is coaxially arranged with the annular disc face and located above the annular disc face; The plurality of spokes are distributed in a grabbing manner, the top ends are fixedly connected to the hub, and the bottom ends are fixedly connected to the annular disc face.

3. The multi-tooth disc cutter of claim 2 wherein, The particle comprises a body and a head which are integrally connected, and the head is located at one end of the body in the longitudinal direction; The bottom of the head is in the shape of an inverted trapezoid, a blade is arranged on the bottom end horizontal side and the front end inclined side of the inverted trapezoid, and the bottom end inclined side and the front end horizontal side form an included angle of 45°.

4. The multi-tooth disc cutter of claim 3 wherein, The head is further provided with a debris baffle which is located above the blade.

5. The multi-tooth disc cutter of claim 3 wherein, The particle installation groove is open at the bottom, the body is fixed in the particle installation groove by screws, a pair of straight grooves are vertically arranged in the body, each straight groove extends along the longitudinal direction of the body, at least two screw holes are arranged in the groove bottom of the particle installation groove along the longitudinal direction, and each screw is fixed in one screw hole after passing through one straight groove.

6. The multi-tooth disc cutter of claim 5 wherein, A first engagement groove is arranged on the top wall of the particle installation groove along the longitudinal direction, and a second engagement groove is arranged on the top of the body and matched with the first engagement groove.

7. The multiple-tooth disc cutter of claim 6 wherein, When the particle is installed in the particle installation groove, the head is located at the end pointing to the center of the annular disc face, and the outer edge of the bottom of the annular disc face is chamfered.

8. The multiple-tooth disc cutter of claim 2 wherein, A plurality of ribs are radially arranged on the top of the hub, and a plurality of clamping grooves corresponding to the plurality of ribs are arranged on the bottom end of the handle.

9. The multi-tooth disc cutter of claim 3 wherein, The blade is made of PCD material.

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