Face milling cutter disc

Abstract

The face milling cutter disc comprises a cutter disc body and blades, the cutter disc body comprises a rear connecting base, a middle transition part and a front mounting base, the rear connecting base, the middle transition part and the front mounting base are integrally formed, the rear mounting base is a cylindrical piece and used for being connected with a driving device, and the middle transition part is located between the rear connecting base and the front mounting base; the middle transition part is a conical part with the diameter increasing from back to front, the front installation seat is a cylindrical piece, a plurality of blade fixing seats are evenly distributed on the periphery of the front installation seat, chip removal parts are arranged among the blade fixing seats, blade assembling and positioning parts are arranged on the blade fixing seats, positioning step faces are arranged on the blade assembling and positioning parts, and the positioning step faces are provided with positioning grooves. The rear side step of the positioning step surface is used for positioning the rear side surface of the blade; and a fastening bolt through hole is formed in the bottom surface of the positioning step surface. The positioning precision of the blade can be improved, the assembly of the blade is simplified, and the stability of the blade can be improved.

Description

Technical Field

[0001] The utility model relates to the field of mechanical processing tools, in particular to a face milling cutter disc. Background Art

[0002] A face milling cutter is a tool used for milling, usually made of high wear-resistant steel. It is mainly used for processing planes, bevels and bosses, and has the characteristics of high efficiency, high precision and high stability. It generally consists of two main parts: a cutter disc and a blade set on the cutter disc, among which the cutter disc plays the role of supporting the blade.

[0003] The existing face milling cutter disc is usually in the shape of a disc, and the blade is fixed to the cutter disc by bolts. When the blade is installed, it is impossible to quickly and accurately position the blade, and the angle and position of the blade need to be adjusted, which is cumbersome. In addition, the assembly hole of the blade is usually located on the outer peripheral surface of the blade, so the assembly direction of the bolt is usually toward the inner side of the cutter disc. When the milling cutter is working, the bolt is easy to loosen under the action of centrifugal force, and the bolt hole is a blind hole. When debris enters the hole, it is difficult to assemble the bolt in place, resulting in difficulty in tightening the blade assembly, affecting its normal use. Therefore, it is necessary to improve the existing face milling cutter disc. Summary of the invention

[0004] The purpose of the utility model is to provide a face milling cutter disc that can solve the problems of the existing face milling cutter discs described in the background technology, such as complicated blade assembly, inability to quickly and accurately position the blades, easy loosening of bolts for fastening the blades, and difficulty in fastening after debris enters the blades.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a face milling cutter disc, including a cutter disc and a blade, the cutter disc including a rear connecting seat, a middle transition portion and a front mounting seat, the rear connecting seat, the middle transition portion and the front mounting seat are integrally formed, the rear mounting seat is a cylindrical member, the rear mounting seat is used to connect a driving device, the middle transition portion is located between the rear connecting seat and the front mounting seat, the middle transition portion is a conical portion whose diameter increases from back to front, the front mounting seat is a cylindrical member, a plurality of blade fixing seats are evenly distributed on the outer periphery of the front mounting seat, a chip removal portion is provided between the blade fixing seats, a blade assembly positioning portion is provided on the blade fixing seat, a positioning step surface is provided on the blade assembly positioning portion, the rear step of the positioning step surface is used for positioning the rear side surface of the blade, the corner portion of the positioning step surface is provided with an arc positioning portion corresponding to the circular arc chamfered portion of the blade, the inner step of the positioning step surface is used for positioning the inner side surface of the blade, and a fastening bolt through hole is provided on the bottom surface of the positioning step surface, and the fastening bolt through hole extends through the blade fixing seat to the chip removal groove wall on the rear side.

[0006] In the above scheme, the blade is a rectangular blade, the rear side surface of the blade is a straight surface, and there is an arc-shaped chamfer between the rear side surface and the inner side surface. The front side surface of the blade is a cutting surface, and the outer side surface of the blade is a straight surface. There is an arc-shaped chamfer surface between the cutting surface and the outer side surface. The end of the cutting surface away from the blade assembly positioning portion is a cutting edge, and a blade assembly hole corresponding to the fastening bolt through hole is provided on the blade.

[0007] In the above solution, the back of the blade fixing seat is a spiral chip removal part. By providing the spiral chip removal part, the cutting chips generated by the blade cutting can move along the spiral surface toward the rear side of the cutter body, away from the workpiece, and prevent wear on the workpiece.

[0008] In the above scheme, the cutting surface is a bevel, and the inclination angle from the cutting edge to the blade fixing seat is α. Through this setting, the blade can have a better cutting effect, and the inclination angle α of the cutting surface can be set to 5° to 15°.

[0009] In the above scheme, the cutting edge is an oblique cutting edge, and the inclination angle of the cutting edge from the inside to the outside is β. This setting can be used for processing the inclined surface, and the inclination angle of the cutting edge β is set according to the angle of the inclined surface to be processed, for example, it can be set to 5° to 20°.

[0010] In the above scheme, a circular assembly hole is provided in the middle of the front mounting seat, and the circular assembly hole is a stepped hole. By providing the circular assembly hole, it is convenient to assemble and fix the face milling cutter disc, and the circular assembly hole is set as a stepped hole, so that the fastener can sink into the stepped hole to prevent the fastener from damaging the processed workpiece.

[0011] In the above scheme, the rear connecting seat is provided with an assembly hole, which is connected to the circular assembly hole on the front mounting seat, and an installation positioning groove is provided on the rear side of the rear connecting seat. The assembly hole and the installation positioning groove are provided to facilitate the assembly and fixation of the face milling cutter disc.

[0012] In the above solution, the blade assembly hole is a stepped countersunk hole. Through this arrangement, the nut of the blade fastening bolt can be sunk into the stepped countersunk hole, thereby avoiding the wear of the nut of the fastening bolt.

[0013] The utility model has positive effects: 1) The face milling cutter disc of the utility model is provided with a positioning step surface for positioning the blade on the blade fixing seat, and the rear side surface, the inner side surface and the arc-shaped surface of the corner portion of the positioning step surface can jointly position the blade, so that when the blade is assembled, it is only necessary to press the rear side surface of the blade against the positioning step surface to complete the positioning of the blade. After the positioning is completed, the blade can be positioned by fastening bolts, which is easy to operate and can ensure the positioning accuracy of the blade; 2) The face milling cutter disc of the utility model is provided with an assembly hole for the fastening bolt for fixing the blade, which is easy to operate and can ensure the positioning accuracy of the blade; even if cutting debris falls into the through hole, it is easy to clean and does not affect the fastening of the fastening bolt, which can ensure the firm assembly of the blade, and the setting direction of the fastening bolt through hole is along the direction of the blade fixing seat, that is, along the tangential direction of the front mounting seat. Through this setting, the influence of the centrifugal force on the fastening bolt during the rotation of the cutter disc can be eliminated, thereby ensuring the stability of the blade assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the face milling cutter disc of the utility model.

[0015] Figure 2 It is a front side schematic diagram of the face milling cutter disc of the utility model.

[0016] Figure 3 It is a side view schematic diagram of the face milling cutter disc of the utility model.

[0017] Figure 4 It is a schematic cross-sectional structure diagram of the face milling cutter disc of the utility model.

[0018] The reference numerals in the figure are: cutter disc 1, rear connecting seat 11, assembly hole 111, installation positioning groove 112, middle transition portion 12, front mounting seat 13, circular assembly hole 131, blade fixing seat 132, chip removal portion 133, positioning step surface 134, fastening bolt through hole 135, blade 2, rear side surface 21, arc-shaped chamfered portion 22, inner side surface 23, cutting surface 24, cutting edge 25, blade assembly hole 26. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is described clearly and completely below through embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1-4 A face milling cutter disc shown includes a cutter disc 1 and a blade 2.

[0021] The cutter head 1 comprises a rear connecting seat 11, a middle transition portion 12 and a front mounting seat 13, which are integrally formed. The cutter head 1 can be made of alloy steel that meets the cutter head strength requirements.

[0022] The rear mounting seat 11 is a cylindrical member, and the rear mounting seat 11 is used to connect the driving device. The rear connecting seat 11 is provided with an assembly hole 111, and the assembly hole 111 is connected to the circular assembly hole 31 on the front mounting seat 13. An installation positioning groove 112 is provided on the rear side surface of the rear connecting seat 11. The assembly hole 111 and the installation positioning groove 112 are provided to facilitate the assembly and fixation of the face milling cutter disc.

[0023] The middle transition portion 12 is located between the rear connecting seat 11 and the front mounting seat 13. The middle transition portion 12 is a conical portion whose diameter increases from the rear to the front. The conicity of the middle transition portion 12 can be determined according to the diameter difference between the rear mounting seat 11 and the front mounting seat 13. The radius of the rear side of the middle transition portion 12 is the same as the radius of the rear mounting seat 11, and the radius of the front side is the same as the radius of the front mounting seat 13.

[0024] The front mounting seat 13 is a cylindrical member, and a plurality of blade fixing seats 132 are evenly distributed on the outer periphery of the front mounting seat 13. A chip removal portion 133 is provided between the blade fixing seats 132, and the back of the blade fixing seat 132 is a spiral-shaped chip removal portion 133. By providing the spiral-shaped chip removal portion 133, the cutting chips generated by the blade cutting can move along the spiral surface toward the rear side of the cutter body, away from the workpiece, and prevent the workpiece from being worn. A blade assembly positioning portion is provided on the blade fixing seat 132, and a positioning step surface 134 is provided on the blade assembly positioning portion. The rear step of the positioning step surface 134 is used for positioning the rear side surface 21 of the blade 2, and the corner portion of the positioning step surface 134 is provided with an arc-shaped positioning portion corresponding to the arc-shaped chamfered portion 22 of the blade 2. The inner step of the positioning step surface 134 is used for positioning the inner side surface 23 of the blade, and a fastening bolt through hole 135 is provided on the bottom surface of the positioning step surface 134, and the fastening bolt through hole 135 extends through the blade fixing seat to the chip groove wall on the rear side.

[0025] A circular assembly hole 131 is provided in the middle of the front mounting seat 13. The circular assembly hole 131 is a stepped hole. The circular assembly hole 131 is provided to facilitate the assembly and fixation of the face milling cutter disc. The circular assembly hole 131 is provided as a stepped hole, so that the fastener can be sunk into the stepped hole to prevent the fastener from damaging the processed workpiece.

[0026] The blade 2 is a rectangular blade, and the material of the blade 2 can be selected according to the material of the processing object. For example, for the processing of aluminum materials, a solid carbide material can be selected.

[0027] The rear side surface of the blade 2 is a straight surface, and there is an arc-shaped chamfer 22 between the rear side surface 21 and the inner side surface 23. The front side surface of the blade 2 is a cutting surface 24. The outer side surface of the blade 2 is a straight surface, and there is an arc-shaped chamfered surface between the cutting surface 24 and the outer side surface. The end of the cutting surface 24 away from the blade assembly positioning portion is a cutting edge 25, and a blade assembly hole 26 corresponding to the fastening bolt through hole 135 is provided on the blade 2.

[0028] The cutting surface 24 is a bevel, and the inclination angle is α from the cutting edge 25 toward the blade fixing seat 132. Through this arrangement, the blade can have a better cutting effect, and the inclination angle α of the cutting surface can be set to 5° to 15°.

[0029] The cutting edge 25 is an oblique cutting edge, and the inclination angle of the cutting edge 25 from the inside to the outside is β. This arrangement can be used for processing of an inclined surface, and the inclination angle of the cutting edge is β, which is arranged according to the angle of the inclined surface to be processed, for example, can be arranged to 5° to 20°.

[0030] The blade assembly hole 26 is a step countersink. Through this arrangement, the nut of the fastening bolt of the blade 2 can be sunk into the step countersink to avoid the wear and tear of the nut of the fastening bolt.

[0031] When using the face milling cutter disc of the utility model, a blade of corresponding material is selected according to the object to be processed, and the blade is placed on the assembly step surface so that the rear side surface, the arc-shaped chamfered portion and the inner side surface of the blade are respectively in close contact with the positioning step surface, and then the blade is fastened with a fastening bolt. If there are debris in the fastening bolt through hole, the fastening bolt through hole can be sprayed with oil first to discharge the debris in the fastening bolt through hole, and then assembled with the fastening bolt. After all the blades are assembled, they are connected to the drive device through the rear connecting seat. The drive device can be a commonly used drive device for face milling cutter discs, such as a tool holder of a machining center. After the face milling cutter disc is assembled, the workpiece can be processed. The face milling cutter disc is driven by the drive device to rotate to mill the workpiece to process the required plane or inclined surface. Because the back of the blade fixing seat of the utility model is a spiral chip removal portion, the cutting chips can be moved along the chip removal portion in a direction away from the workpiece to prevent wear on the workpiece. The utility model is simple to assemble and position the blade, can be quickly positioned, and improves assembly efficiency. At the same time, during processing, the positioning step surface can also provide a stable support force for the blade, making the blade assembly more stable. In the face milling cutter disc of the utility model, the assembly hole of the fastening bolt for fixing the blade is set as a through hole. Even if cutting debris falls into the through hole, it is easy to clean up without affecting the fastening of the fastening bolt, which can ensure the firmness of the blade assembly. Moreover, the setting direction of the fastening bolt through hole is set along the direction of the blade fixing seat, that is, along the tangential direction of the front mounting seat. Through this setting, the influence of the centrifugal force on the fastening bolt when the cutter disc rotates can be eliminated, and the stability of the blade assembly can be ensured.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A face milling cutter disc, characterized in that: The tool disc comprises a cutter disc and a blade, the cutter disc comprises a rear connecting seat, a middle transition portion and a front mounting seat, the rear connecting seat, the middle transition portion and the front mounting seat are integrally formed, the rear mounting seat is a cylindrical part, the rear mounting seat is used to connect the driving device, the middle transition portion is located between the rear connecting seat and the front mounting seat, the middle transition portion is a conical portion whose diameter increases from back to front, and the front mounting seat is a cylindrical part, a plurality of blade fixing seats are evenly distributed on the outer periphery of the front mounting seat, a chip removal portion is provided between the blade fixing seats, a blade assembly positioning portion is provided on the blade fixing seat, a positioning step surface is provided on the blade assembly positioning portion, the rear step of the positioning step surface is used for positioning the rear side surface of the blade, the corner portion of the positioning step surface is provided with an arc-shaped positioning portion corresponding to the circular arc chamfered portion of the blade, the inner step of the positioning step surface is used for positioning the inner side surface of the blade, and a fastening bolt through hole is provided on the bottom surface of the positioning step surface, and the fastening bolt through hole extends through the blade fixing seat to the chip removal groove wall on the rear side.

2. The face milling cutter disc according to claim 1, characterized in that: The blade is a rectangular blade, the rear side surface of the blade is a straight surface, and there is an arc-shaped chamfer between the rear side surface and the inner side surface. The front side surface of the blade is a cutting surface, and the outer side surface of the blade is a straight surface. There is an arc-shaped chamfered surface between the cutting surface and the outer side surface. The end of the cutting surface away from the blade assembly positioning portion is a cutting edge, and a blade assembly hole corresponding to the fastening bolt through hole is provided on the blade.

3. The face milling cutter disc according to claim 1, characterized in that: The back side of the blade fixing seat is a chip removal portion with a spiral surface.

4. The face milling cutter disc according to claim 2, characterized in that: The cutting surface is an inclined surface, and the inclination angle from the cutting edge to the blade fixing seat is α.

5. The face milling cutter disc according to claim 2, characterized in that: The cutting edge is an oblique cutting edge, and the inclination angle of the cutting edge from the inside to the outside is β.

6. The face milling cutter disc according to claim 1, characterized in that: A circular assembly hole is provided in the middle of the front mounting seat, and the circular assembly hole is a stepped hole.

7. The face milling cutter disc according to claim 6, characterized in that: The rear connecting seat is provided with an assembly hole which is communicated with the circular assembly hole on the front mounting seat, and a mounting positioning groove is provided on the rear side surface of the rear connecting seat.

8. The face milling cutter disc according to claim 1, characterized in that: The blade assembly hole is a stepped countersunk hole.

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