CN214322097U - Drilling and milling integrated cutter - Google Patents

Abstract

A drilling and milling integrated cutter comprises a base, a plurality of milling tooth parts and a plurality of drilling parts, wherein the base extends along an axis to form a column shape, the milling tooth parts are arranged on the periphery of the base at intervals, and the drilling parts respectively and integrally extend from the milling tooth parts along the direction of the axis. Adjacent two mill tooth spare and delimit jointly and be located the chip groove between the mill tooth spare, each mills tooth spare and has the several parallel tooth sword that sets up at interval each other, and each drilling piece has the past the protruding drilling sword that stretches of the extending direction of axis. When the hole is drilled through the drilling blade, the hole can be cut by the serrated knife to form an internal thread, so that the hole can be a screw hole at the same time, the effect of integrating drilling and milling is achieved, other tools do not need to be replaced in the machining process, and the construction efficiency is improved.

Description

Drilling and milling integrated cutter

Technical Field

The utility model relates to a cutter especially relates to a brill mills integral type cutter.

Background

Referring to fig. 1 and 2, a conventional tapping tool 2 is adapted to be mounted on a machine 1. The machine 1 comprises a rotary part 11 which can be driven in rotation, and a mounting part 12 which extends from the rotary part 11 in a manner such that it can rotate together and is intended for connection to the tapping tool 2. The tapping tool 2 comprises a body 21 adapted to be releasably connected to the mounting member 12 and extending in the direction of an axis L1 to form a column, and a tapping portion 22 extending from one end of the body 21 along the axis L1. Wherein the body portion 21 is adapted to be releasably connected to the mounting member 12 and to rotate with the rotating member 11. The tapping portion 22 includes four tapping surfaces 221 (fig. 1 and 2 show only three due to the drawing angle) formed at the periphery and located at the diagonal positions respectively and extending in the direction parallel to the axis L1, four chip removal surfaces 222 (fig. 1 and 2 show only two due to the drawing angle) respectively connecting adjacent two sides of the tapping surfaces 221 and defining four chip removal grooves 220, and a plurality of teeth cutters 223 protruding at intervals on each tapping surface 221 and used for tapping.

When the tapping tool 2 is used, the axis L1 is first aligned with the rotation center of the rotary member 11, and then the body 21 is positioned by being fitted over the mounting member 12, thereby completing the stable mounting of the tapping tool 2 on the machine tool 1. When the rotating member 11 is driven, the tapping tool 2 is driven to rotate at a high speed by taking the axis L1 as a rotating shaft, and one end of the tapping portion 22 away from the body portion 21 is pushed into a hole 10 to be processed, and the tapping surface 221 is pushed along the extending direction of the hole 10, and the wall surface is cut into a thread 101 by the cutting force generated by the cutter 223. However, before the tapping operation, a pre-operation of drilling a hole must be performed, a drill (not shown) for drilling a hole is used to drill the hole 10 on a wall surface or a surface of an object, and then the tapping tool 2 is pushed into the hole 10 to perform the tapping operation, so that the thread 101 can be completed only by switching tools for different purposes in the whole processing step, and the processing step is not only cumbersome, but also needs to replace the drill and the tapping tool 2 according to the size of the hole 10 with different specifications, so that it is inconvenient for a constructor to carry more tools, and the construction efficiency is greatly reduced, and thus the above disadvantages need to be improved.

Disclosure of Invention

An object of the utility model is to provide a bore milling integral type cutter of drilling simultaneously and screw tap.

The utility model discloses bore and mill integral type cutter contains along the axis extend and be cylindrical base, set up in the outer peripheral mill tooth unit of base, and set up in the drilling unit of the one end of base. The tooth milling unit comprises a plurality of tooth milling pieces which extend in the direction of the axis and are arranged on the outer periphery of the base at intervals, two adjacent tooth milling pieces and the base define a chip removal groove between the tooth milling pieces together, and each tooth milling piece comprises a plurality of tooth cutters which are arranged in parallel at intervals. The drilling unit comprises a plurality of drilling parts distributed around the axis, and each drilling part is provided with a drilling edge protruding towards the extending direction of the axis.

The purpose of the utility model and the technical problem thereof can be further realized by adopting the following technical scheme.

Preferably, the drilling and milling integrated tool is one in which each drilling edge is arc-shaped toward a direction away from the base.

Preferably, the drilling and milling integrated tool is configured such that each drilling edge projects a projection area on the base along the axis, the projection area having an inner end point adjacent to the axis and an outer end point opposite to the inner end point and adjacent to the outer periphery of the base, the inner end points being spaced apart from each other.

Preferably, the drilling and milling integrated tool is configured such that each drilling edge projects on the base along the axis to form a projection area having an inner end point abutting against the axis and an outer end point adjacent to the outer periphery of the base opposite to the inner end point, the inner end points being aligned with each other.

Preferably, the drilling and milling integrated tool is configured such that each drilling edge projects a projection area on the base along the axis, the projection area having an inner end point adjacent to the axis and an outer end point opposite to the inner end point and adjacent to the outer periphery of the base, and the axis is located between the inner end point and the outer end point of each projection area.

Preferably, the drilling and milling integrated tool is a block-shaped insert, and the drilling edges are detachably locked to the drilling member in a direction perpendicular to the axis.

Preferably, the drilling and milling integrated tool is configured such that the drilling members are integrally extended from the milling tooth member, and each drilling edge is integrally extended from the respective drilling member in the direction of the axis.

Preferably, the drilling and milling integrated tool is characterized in that the periphery of the base is recessed inwards to form a plurality of connecting grooves which are spaced from each other, and the milling elements are detachably arranged in the connecting grooves respectively.

Preferably, the drilling and milling integrated tool is one in which the drilling unit is detachably connected to the base.

Preferably, the drilling and milling integrated tool is provided with a milling element, wherein the milling element is helical along the extension direction of the axis.

Preferably, the drilling and milling integrated tool is one in which each milling element extends in a direction parallel to the axis.

Preferably, the drilling and milling integrated tool is provided, wherein the extension direction of each tooth cutter is perpendicular to the direction of the axis.

The utility model discloses a profitable effect lies in: because the tooth milling part and the drilling part are sequentially arranged in the direction of the axis in the design on the base, when the tooth milling part and the drilling part are matched with the control of a numerical control machine tool, a hole can be drilled through the drilling blade, and meanwhile, the hole can be subjected to the cutting operation of the serrated knife to form an internal thread, so that the hole is simultaneously formed into a screw hole, and the integral effects of drilling and tooth milling can be achieved only by the single operation step, and the processing efficiency is further improved.

Drawings

Fig. 1 is a side view illustrating a conventional tapping tool;

FIG. 2 is a side view of the tapping tool for tapping threads;

FIG. 3 is a side view illustrating a first embodiment of the drilling and milling integrated tool of the present invention;

fig. 4 to 6 are top views respectively illustrating three implementation aspects of the drilling unit of the first embodiment;

FIGS. 7 and 8 are partial side views illustrating the undulation of the imaginary contour line of the first embodiment;

FIGS. 9 and 10 are schematic views illustrating the drilling and milling operations, respectively, performed using the first embodiment;

figure 11 is a side view illustrating one aspect of a milling member of the first embodiment;

fig. 12 is a side view illustrating a second embodiment of the drilling and milling integrated tool of the present invention;

FIG. 13 is a side view of a third embodiment of the integrated drilling and milling tool of the present invention; and

fig. 14 is a side view in cross section illustrating a fourth embodiment of the integrated drilling and milling tool of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

Before the present invention is described in detail, it should be noted that in the following description, similar components are denoted by the same reference numerals

Referring to fig. 3, the first embodiment of the drilling and milling integrated tool of the present invention is suitable for being installed on a Computer Numerical Control (CNC) machine tool or lathe (not shown). The first embodiment includes a base 4 extending along an axis L2 to be cylindrical, a tooth milling unit 5 disposed on the outer periphery of the base 4, and a drilling unit 6 disposed at one end of the base 4.

The base 4 is preferably made of metal, and thus can withstand a high pressure environment due to a strong material strength, thereby increasing the service life. The base 4 includes a mounting portion 41 having a cylindrical shape and adapted to be connected to the machine tool, and a processing portion 42 extending from one end of the mounting portion 41 along the axis L2.

The tooth milling unit 5 comprises two tooth milling elements 51 which extend helically in the direction of the axis L2 and surround the periphery of the machining part 42 at a distance from one another. Each tooth milling element 51 comprises a plurality of teeth cutters 511 arranged at intervals along the extension direction of the axis L2 and extending along the direction perpendicular to the axis L2, wherein the tooth milling element 51 and the machining part 42 jointly define two mutually spaced apart flutes 50 located between the tooth milling elements 51 and extending along the direction of the axis L2 to form a spiral (only one flute is shown in fig. 3 due to the angle). In particular, the milling unit 5 is formed by integrally extending the base 4, so that the same metal material as the base 4 can generate a high cutting force to dig out the material to generate a thread 312 (see fig. 10) by the higher hardness of the material in cooperation with the torque generated by the rotation of the machine tool.

The drilling unit 6 comprises two drilling members 61 extending from the milling element 51, each drilling member 61 having a drilling edge 611 projecting in the direction of extension of the axis L2. The drilling edge 611 is a block-shaped blade, preferably a four-curve-shaped blade, but not limited thereto, and the drilling edge 611 is detachably locked to the drilling member 61 along a direction perpendicular to the axis L2.

Referring to fig. 4 to 6, each drilling edge 611 is defined to project a projection area 62 on the base 4 along the axis, and each projection area 62 forms an inner end point 621 adjacent to the axis L2 and an outer end point 622 adjacent to the outer periphery of the base 4 opposite to the inner end point 621 in the radial direction.

In the first embodiment, the drilling unit 6 can adjust the relative positions of the drilling edges 611 according to the processing requirements, so as to generate the following three aspects: the first aspect shown in fig. 4 is that the projection areas 62 extend from the respective inner end points 621 in opposite directions perpendicular to the axis L2, and the inner end points 621 are aligned with each other on the axis L2; the second aspect shown in fig. 5 is that the projection areas 62 extend from the respective inner end points 621 in opposite directions perpendicular to the axis L2 and are partially overlapped, and the axis L2 is located between the inner end point 621 and the outer end point 622 of each projection area 62; in a third aspect shown in fig. 6, the projection areas 62 extend from respective inner ends 621 in opposite directions perpendicular to the axis L2 and are spaced apart from each other, and the inner ends 621 are spaced apart from each other around the axis L2.

Referring to fig. 7 to 8, the outer periphery of the drilling edge 611 forms a curved imaginary contour line C when viewed in a direction perpendicular to the axis L2, so that the imaginary contour line C has different radii of curvature depending on the state of the drilling unit 6 when the drilling unit is supported on the base 4 having the same size. When the drilling unit 6 is in the first mode, the radius of curvature of the imaginary contour line C is small as shown in fig. 7, that is, the curvature of the imaginary contour line C is visually large; when the drilling unit 6 is in the second mode, the curvature radius of the imaginary contour line C is large and the undulation is gentle as shown in fig. 8, so that the curvature is small with respect to the first mode.

Referring to fig. 9 and 10, when the first embodiment is used, the base 4 is first installed on the machine tool, and the first embodiment is operated to perform a machining operation on an object 3 through calculation and control of computer values. First, the drilling unit 6 is rotated along a secondary axis L3 parallel to the axis L2, and is advanced toward the object 3 to perform a preliminary drilling operation, thereby forming a small hole (not shown). Then, under the control of the machine tool, the first embodiment rotates at a high speed around the axis L2, revolves around the minor axis L3 in the small hole, and continues to advance in the direction of the minor axis L3. The drilling operation is accomplished by the drilling edge 611 cooperating with the torque generated by the rotation, thereby generating a high cutting force to cut out a hole 31 extending around the minor axis L3 and having an inner diameter greater than the inner diameter of the hole. Meanwhile, the rotary vane revolves around the minor axis L3 and continues to advance in the direction of the minor axis L3. When the tooth milling unit 5 contacts a wall 311 surrounding the hole 31, the tooth cutter 511 will start to cut the wall 311 to generate a gap matching the shape of the tooth cutter 511, and the tooth milling unit 5 will cut the wall 311 while rotating around the minor axis L3, and will advance in the direction of the minor axis L3, so that the gap will extend spirally in the direction of the minor axis L3 to generate the thread 312, thereby completing the tooth milling operation in a single step. Specifically, since the drilling step and the milling step are precisely calculated and controlled by the computer, including the rotation speed and the revolution speed, the tooth cutter 511 can continuously cut the wall surface 311 to form continuous notches, and further machine the threads 312 with the same pitch and the same size. The machine tool can also adjust the distance between the first embodiment and the minor axis L3 to predict the inner diameter of the hole 31 after machining, so as to machine holes 31 with different sizes on the object 3 according to different requirements.

It should be noted that, since the torque applied in the tooth milling step is increased when the size of the first embodiment is increased, the number of the tooth milling members 51 needs to be adjusted to achieve higher structural strength to meet the torque requirement of machining, that is, the number of the tooth milling members 51 may be two, four, six, or other numbers, and the number of the drilling members 61 continues the tooth milling members 51 to form a corresponding number. In addition to the above description, the first embodiment can also present implementation aspects of different structural configurations. As shown in fig. 11, since the extended shape of the milling element 51 can be changed to cope with different machining specifications and requirements, the extended shape of the milling element 51 is not limited to the spiral shape, and the milling element 51 may extend in a direction parallel to the axis L2.

Referring to fig. 12, a difference between the second embodiment of the drilling and milling integrated tool of the present invention and the first embodiment is the connection relationship of the drilling edge 611. Specifically, the drilling members 61 are integrally extended from the tooth milling members 51, respectively, and the drilling edge 611 of each drilling member 61 is integrally extended in a direction along the axis L2 in a direction away from the base 4 to have a circular arc shape. Therefore, the second embodiment can be directly formed in the mold in the manufacturing process, so that the manufacturing process is simpler, and the second embodiment can be produced in large quantities according to the market demand.

Referring to fig. 13, a third embodiment of the drilling and milling integrated tool of the present invention is different from the first embodiment in the connection relationship of the milling element 51. Specifically, the outer periphery of the base 4 is recessed inward to form a plurality of connecting slots 40 spaced from each other, and the milling elements 51 are detachably disposed in the connecting slots 40 and fixed to the base 4 by screws. The third embodiment can quickly replace the milling tooth piece 51 with different specifications at a processing site to meet different processing requirements, thereby improving the universality.

Referring to fig. 14, a difference between the fourth embodiment of the drilling and milling integrated tool of the present invention and the third embodiment is that the drilling unit 6 is detachably screwed on the base 4, which not only can be easily replaced when worn, but also can be replaced with a special workpiece according to different processing requirements, so that the fourth embodiment can satisfy more processing requirements than the third embodiment.

Claims (12)

1. The utility model provides a bore and mill integral type cutter which characterized in that: the drilling and milling integrated cutter comprises:

a base extending along an axis to be columnar;

the tooth milling unit is arranged on the outer periphery of the base and comprises a plurality of tooth milling pieces which extend along the direction of the axis and are arranged on the outer periphery of the base at intervals, two adjacent tooth milling pieces and the base define a chip groove between the tooth milling pieces together, and each tooth milling piece is provided with a plurality of tooth cutters which are arranged in parallel at intervals; and

the drilling unit is arranged at one end of the base and comprises a plurality of drilling parts distributed around the axis, and each drilling part is provided with a drilling blade protruding towards the extending direction of the axis.

2. The integrated drilling and milling tool as set forth in claim 1, wherein: each of the drill edges is arcuate in a direction away from the base.

3. The integrated drilling and milling tool as set forth in claim 2, wherein: each drilling edge projects a projected area on the base along the axis, the projected area having an inner end point adjacent the axis and an outer end point opposite the inner end point and adjacent the outer periphery of the base, the inner end points being spaced from each other.

4. The integrated drilling and milling tool as set forth in claim 2, wherein: each drilling edge projects a projected area on the base along the axis, the projected area having an inner end point abutting the axis and an outer end point adjacent the outer periphery of the base opposite the inner end point, the inner end points being aligned with each other.

5. The integrated drilling and milling tool as set forth in claim 2, wherein: each drilling edge projects a projected area on the base along the axis, the projected area having an inner end point adjacent the axis and an outer end point opposite the inner end point and adjacent the outer periphery of the base, the axis being located between the inner end point and the outer end point of each projected area.

6. The integrated drilling and milling tool as set forth in claim 1, wherein: the drilling edges are block-shaped blades and are detachably locked on the drilling parts along the direction vertical to the axis respectively.

7. The integrated drilling and milling tool as set forth in claim 1, wherein: the drilling members are integrally extended from the tooth milling member, respectively, and each drilling blade is integrally extended from the respective drilling member in the direction of the axis.

8. The integrated drilling and milling tool as set forth in claim 1, wherein: the periphery of the base is inwards sunken to form a plurality of mutually spaced connecting grooves, and the milling tooth parts are respectively and detachably arranged in the connecting grooves.

9. The integrated drilling and milling tool as set forth in claim 1, wherein: the drilling unit is detachably connected to the base.

10. The integrated drilling and milling tool as set forth in claim 1, wherein: the tooth milling piece is spiral along the extending direction of the axis.

11. The integrated drilling and milling tool as set forth in claim 1, wherein: each of the milling elements extends in a direction parallel to the axis.

12. The integrated drilling and milling tool as set forth in claim 1, wherein: the extension direction of each toothed cutter is perpendicular to the direction of the axis.

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