CN214640777U - Hole milling and tapping integrated cutter - Google Patents

Abstract

The utility model provides a tooth integral type cutter is attacked in milling hole contains axial extension and is cylindrical base, is located attack tooth unit of the outer periphery of base, and is located the milling hole unit of the one end of base. The tapping unit comprises a plurality of tapping elements extending in the axial direction of the base and surrounding the base at intervals. Each of the tapping elements has a plurality of teeth knives arranged parallel to each other at a distance. The hole milling unit comprises a plurality of hole milling pieces, and each hole milling piece is provided with a hole milling blade which protrudes and extends away from the base along the axial direction of the base to form a curve. When the hole milling blade digs the hole, 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 hole milling and tapping is achieved, other tools do not need to be replaced in the machining process, and the construction efficiency is improved.

Description

Hole milling and tapping integrated cutter

Technical Field

The utility model relates to a cutter, in particular to tooth integral type cutter is attacked in milling hole.

Background

Referring to fig. 1, a conventional tapping tool 2 is adapted to be mounted on a machine tool 1. The tapping tool 2 comprises a body 21 adapted to be releasably connected to the implement 1 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. 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 two adjacent sides of the tapping surfaces 221 and defining two chip removal grooves 220, and a plurality of teeth cutters 223 protruding at intervals on each tapping surface 221 and used for tapping. Referring to fig. 2, a conventional drill 3 has two milling edges 31 with sharp shapes and is used for milling a hole for the tapping tool 2 to tap.

Referring to fig. 1 and 2, when the tool 1 is driven, the tapping tool 2 is driven to rotate at a high speed around the axis L1, and one end of the tapping portion 22 away from the body portion 21 is pushed into the 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 the internal thread 101 by the cutting force generated by the cutter 223. However, the pre-positioning operation of cutting the hole 10 must be performed before the tapping operation, the hole 10 must be cut on the wall surface or the surface of the object by the drill 3, and then the tapping tool 2 can be pushed into the hole 10 to perform the thread machining, so that the internal thread 101 can be completed only by switching the tools for different purposes, and the machining process is not only complicated, but also the drill 3 and the tapping tool 2 can be changed according to the size of the hole 10 with different specifications, which not only makes it inconvenient for the constructor to carry more tools, but also reduces the construction efficiency, thereby improving the above-mentioned disadvantages.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a while hole milling and cut out screw thread and can increase the hole milling of suitability and attack tooth integral type cutter.

The utility model discloses an integral type cutter is attacked in milling hole contains the base, is located attack tooth unit of the outer periphery of base, and is located the milling hole unit of the one end of base. The base extends along an axis to be cylindrical. The tapping unit comprises a plurality of tapping elements extending in the axial direction of the axis and spaced around the axis. Each of the tapping elements has a plurality of teeth knives arranged parallel to each other at a distance. The hole milling unit comprises a plurality of hole milling pieces distributed around the axis. Each hole milling piece is provided with a hole milling blade which protrudes and extends away from the base along the axial direction of the axis to form a curve, and the hole milling blade is recessed to form a chip groove.

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

Preferably, the milling and tapping integrated tool is one in which outer peripheries of any two milling edges located on opposite sides in a radial direction of the base together form an imaginary contour line, and the imaginary contour line appears as an arc line at a viewpoint in a direction perpendicular to the axis.

Preferably, any two milling edges located on opposite sides in the radial direction of the base together form an imaginary contour line, and the imaginary contour line presents two mutually connected arc lines at a viewpoint perpendicular to the axis.

Preferably, the milling and tapping integrated tool comprises a tapping unit and a tapping member, wherein the tapping unit is connected with the milling unit, and the tapping member extends integrally from the milling unit.

Preferably, the milling and tapping integrated tool comprises a base, a plurality of milling holes and tapping elements, wherein the base is provided with a plurality of connecting grooves, the plurality of connecting grooves are formed in the outer circumferential surface of the base, and the tapping elements are detachably arranged in the connecting grooves respectively.

Preferably, the base has two connecting portions that are spaced from each other and cooperate to define a groove for the milling unit to be disposed, and an extending portion that is connected to the connecting portions and extends along the axis, each connecting portion is recessed from the outer surface toward the axis to form a positioning hole, the milling unit forms a through hole that extends along the radial direction of the base and can be communicated with the positioning hole, and the milling unit further includes a locking member for penetrating through the positioning hole and the through hole, so that the milling unit is detachably connected to the base.

Preferably, the base includes a tool bit for the hole milling unit to be disposed, and a tool bar detachably connected to the tool bit, the tool bit has a threaded portion extending along the axis and away from the hole milling unit, and one end of the tool bar is recessed along the axis to form a thread groove for the threaded portion to be threaded.

Preferably, the milling and tapping integrated tool comprises a milling unit, a tapping unit and a base, wherein the milling unit, the tapping unit and the base extend integrally.

Preferably, the milling and tapping integrated cutter is provided with a plurality of teeth, and the teeth are arranged on the same plane.

The beneficial effects of the utility model reside in that: because attack the tooth unit with the milling hole unit is followed the direction of axis sets gradually design on the base, when consequently coordinating numerical control machine tool's control, can pass through earlier the hole is milled to the milling hole unit, simultaneously, the hole can receive the cutting operation of attacking the tooth unit and form the internal thread, makes the hole becomes the screw simultaneously, consequently only needs above-mentioned single operating procedure, can reach the milling hole and attack the integrative efficiency of tooth, and then promotes machining efficiency.

Drawings

FIG. 1 is a side view in cross-section illustrating a prior art tapping tool;

FIG. 2 is a fragmentary side elevation view illustrating a prior art drill bit;

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

fig. 4 and 5 are fragmentary side views each illustrating a different aspect of the tapping unit of the first embodiment;

fig. 6 is a side view schematic diagram illustrating the hole milling operation of the first embodiment;

FIG. 7 is a side view schematic diagram illustrating the thread cutting operation of the first embodiment;

FIG. 8 is a fragmentary side exploded view illustrating a second embodiment of the milling and tapping integrated tool of the present invention;

fig. 9 is a fragmentary side view illustrating the tapping unit of the second embodiment disposed on a base;

FIG. 10 is a fragmentary side exploded view illustrating a third embodiment of the milling and tapping integrated tool of the present invention;

FIG. 11 is a fragmentary side exploded view illustrating a fourth embodiment of the milling and tapping integrated tool of the present invention;

fig. 12 is a side view schematic illustration of the fourth embodiment for milling holes;

FIG. 13 is a side view schematic diagram illustrating the thread cutting operation of the fourth embodiment; and

fig. 14 is a fragmentary side exploded view illustrating a fifth embodiment of the milling and tapping integrated tool of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and embodiments:

referring to fig. 3, a first embodiment of the milling and tapping integrated tool of the present invention is suitable for being installed on a Computer Numerical Control (CNC) machine tool or lathe (not shown in fig. 3). The first embodiment includes a base 4 extending along an axis L2 to be cylindrical, a tapping unit 5 disposed on the outer periphery of the base 4, and a hole milling 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 a service life.

The tapping unit 5 comprises two tapping elements 51 extending in the axial direction of the axis L2 and spaced apart from each other around the axis L2. Each of the tapping elements 51 includes a plurality of blades 511 (only one point is shown in fig. 3 for the sake of view) spaced along the extending direction of the base 4 and extending in the direction perpendicular to the axis L2. Specifically, the tapping unit 5 is made of a metal material with high hardness, and can generate a high cutting force to cut out a material to generate an internal thread S (not shown in fig. 3) by matching with a torque generated by the rotation of the machine tool through the material characteristics. It should be noted that, since the first embodiment needs to be matched with different machining requirements, the number of the tapping members 51 needs to be adjusted to achieve higher structural strength to meet the cutting requirements of machining, that is, the number of the tapping members 51 may be two, four, six, or other numbers, and the first embodiment is not limited to the number of the tapping members 51.

The hole milling unit 6 comprises two hole milling members 61 distributed around the axis L2, each hole milling member 61 has a hole milling edge 611 protruding away from the base 4 along the axial direction of the axis L2 and curved, and is recessed to form a chip groove 610. Wherein, the hole milling unit 6, the tapping unit 5 and the base 4 extend integrally. It should be noted that, since the first embodiment needs to be matched with different processing requirements, the number of the hole milling pieces 61 needs to be adjusted to achieve higher structural strength to meet the torque requirement of processing, that is, the number of the hole milling pieces 61 may be two, four, six, or other numbers, and the first embodiment is not limited to the number of the hole milling pieces 61.

Referring to fig. 4 and 5, the milling edge 611 of the milling unit 6 can be adjusted in shape and position according to different processing requirements, and the following two implementation modes are listed: as defined, from a viewpoint of a direction perpendicular to the axis L2, the outer peripheral edges of any two of the boring blades 611 located on opposite sides in the radial direction of the base 4 together form a curved imaginary contour line D, and therefore, when the boring tool 61 is received in the same size of the base 4, the imaginary contour line D exhibits different radii of curvature depending on the shape of the boring tool 61.

In the first embodiment, as shown in fig. 4, when the imaginary contour line D appears as an arc line at a viewpoint perpendicular to the axis L2, the imaginary contour line D is called a single-curve embodiment, which not only facilitates machining, but also reduces abrasion and vibration during hole milling, thereby improving machining stability. In addition, since the top end of the imaginary contour line D is located at the midpoint, the area for milling the hole is small and concentrated, so that the operation displacement required for machining is small, and the hole B having an outer diameter similar to the outer diameter of the hole milling unit 6 can be processed. The second implementation mode is shown in fig. 5, the imaginary contour line D is two mutually connected arcs at the viewpoint perpendicular to the direction of the axis L2, and is called a hyperbolic mode, because the top end of the imaginary contour line D is spaced and located at two sides of the axis L2, the contact area of the milling hole can be increased, and further the overall excavating and removing capability of the milling hole unit 6 is increased, so as to achieve better milling hole efficiency, and the accumulated chips are easier to be removed structurally, so that the cutting capability of the milling hole blade 611 is prevented from being affected. It should be noted that, in either the single curve or the hyperbolic curve, the milling edge 611 is configured to produce less wear than the conventional drill 3 (shown in fig. 2), so that the first embodiment can be used with the tool to mill the hole B having a larger outer diameter than the base 4 itself.

Referring to fig. 3, 6 and 7, when the first embodiment is used, the base 4 is first installed on the machine tool (not shown), and the first embodiment is operated to perform a machining operation on an object a through calculation and control of computer values. First, the hole milling unit 6 is rotated along a secondary axis L3 parallel to the axis L2, and is advanced to perform a preliminary hole milling operation with respect to the object a, so as to generate 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 hole milling operation is achieved by the fact that the hole milling blade 611 cooperates with the moment generated by self-rotation to generate a high cutting force, and a hole B which extends around the minor axis L3 and has an inner diameter larger than the inner diameter of the hole is milled in the hole. Meanwhile, the first embodiment revolves around the minor axis L3, and continues to advance in the direction of the minor axis L3. When the tapping unit 5 contacts a wall surface C surrounding the hole B, the cutter 511 starts to cut the wall surface C to generate a notch matching the pattern of the cutter 511, and the tapping unit 5 cuts the wall surface C while rotating around the minor axis L3, and advances in the direction of the minor axis L3, so that the notch extends spirally in the direction of the minor axis L3 to generate the internal thread S, and the thread cutting operation is performed simultaneously in a single step. In particular, since the whole steps of the hole milling step and the thread cutting step are precisely calculated and controlled by the computer, including the rotation speed, the revolution speed and the advancing displacement speed, the tooth blade 511 can continuously cut the wall surface C to generate continuous notches, thereby machining the internal threads S 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 B after machining, so as to machine the holes B with different sizes according to different requirements.

Therefore, by cooperating with the mechanism in which the hole milling member 61 and the tapping member 51 are provided on the base 4 together, the tapping member 51 can cut the internal thread S into the wall surface C while the hole milling member 61 mills the hole, so that the hole milling and tapping integrated operation is achieved, and the processing efficiency is further improved. Moreover, the mode of milling hole sword 611 can adjust according to different processing demands, satisfies different processing environment through single curve mode appearance or hyperbola mode appearance, promotes the suitability from this.

Referring to fig. 8 and 9, a second embodiment of the milling and tapping integrated tool of the present invention is different from the first embodiment in the connection relationship between the milling unit 6 and the tapping unit 5 and the base 4. The hole milling unit 6 is shaped like a flat block and detachably connected to the base 4, and forms a through hole 60 extending in the radial direction of the base 4. The hole milling unit 6 further comprises a locking member 62 for passing through the through hole 60, so that the hole milling member 61 is detachably connected to the base 4. The tapping elements 51 of the tapping unit 5 each extend integrally from the hole milling element 61, i.e. the tapping elements 51 can be detachably arranged on the base 4 together with the hole milling element 61. The base 4 comprises a cutting head 41 for the hole milling unit 6 and a tool shank 42 extending from one end of the cutting head 41 in the direction of the axis L2 away from the hole milling unit 6 and for connecting to the machine tool. The cutting head 41 has two connecting portions 411 (only one is shown in fig. 8 due to the drawing angle) spaced from each other, and an extending portion 412 connected to the connecting portions 411 and extending along the axis L2 in a direction away from the hole milling unit 6. The connecting portions 411 define a recess 410 for the drilling member 61 and the tapping member 51 to be placed in at intervals. Each connecting portion 411 is recessed from the outer surface toward the direction of the axis L2 to form a positioning hole 414 communicating with the through hole 60 and through which the locking member 62 passes.

In the second embodiment, the hole milling piece 61 and the tapping piece 51 can be integrally and detachably arranged in the groove 410, and the fixing mechanism that the locking piece 62 is arranged in the positioning hole 414 and the through hole 60 in a penetrating manner is matched, so that the effect of replacing the hole milling piece 61 and the tapping piece 51 with different specifications according to different processing requirements can be achieved, the applicability and the convenience are increased, and the operating efficiency of operators is further improved. It should be noted that the materials of the hole milling member 61 and the tapping member 51 can be different from the material of the base 4, so as to meet different requirements, thereby improving the working efficiency and reducing the cost. For example, the material of the base 4 does not need to meet the hardness requirement of the hole milling element 61 and the tapping element 51, and a metal material with lower cost is used, thereby reducing the material cost.

Referring to fig. 10, a third embodiment of the milling and tapping integrated tool of the present invention is different from the second embodiment in the connection relationship between the tool bit 41 and the tool bar 42. The cutting head 41 also has a threaded portion 413 extending from one end of the extension 412 along the axis L2 in a direction away from the milling unit 6. One end of the cutter bar 42 close to the cutter head 41 is recessed along the direction of the axis L2 to form a screw groove 420 for the screw connection portion 413 to screw, so that the cutter head 41 can be detachably connected to the cutter bar 42, thereby improving the installation applicability, facilitating the operation and shortening the installation time. It should be noted that the material of the cutting head 41 does not need to be the same as the material of the cutter bar 42, so that the material can be selected according to different requirements, thereby reducing the cost.

It should be noted that the third embodiment is not limited to the thread form of the thread groove 420, and may correspond to design specifications of different plants, such as ACME (ACME), and the thread portion 413 corresponds to the thread form of the thread groove 420.

Referring to fig. 11, a fourth embodiment of the milling and tapping integrated tool of the present invention is different from the second embodiment in that the tapping unit 5 and the milling unit 6 are spaced apart from each other and can be separately disposed. The outer peripheral surface of the base 4 is recessed inwardly to form a plurality of coupling slots 40 spaced from one another and surrounding the axis L2. The tapping members 51 of the tapping unit 5 are detachably disposed in the connecting grooves 40, respectively, and the hole milling unit 6 is detachably connected to the tool bit 41, so that the respective arrangement effects are achieved, the specifications of the tapping members 61 and the tapping members 51 can be adjusted according to different requirements, and the applicability and convenience are further improved. It should be noted that, since the tapping unit 5 and the hole milling unit 6 are spaced from each other and are less likely to affect the material strength of each other, the size adjustment range of the fourth embodiment is wider, that is, the specification size of the fourth embodiment can be increased to be suitable for processing the hole B with a larger inner diameter.

Referring to fig. 12 and 13, the installation method and the hole milling operation are the same as those of the first embodiment when the fourth embodiment is used. Since the tapping unit 5 is spaced apart from the hole milling unit 6 by a certain distance, that is, when the hole milling member 61 is dug out to a certain depth, the tapping member 51 will contact the wall surface C. When the tapping member 51 contacts the wall surface C, the wall surface C is cut to generate the internal thread S, thereby completing the thread cutting operation. Therefore, the fourth embodiment can still achieve milling and tapping integrated operation, and can machine the hole B in a different manner from the first embodiment, thereby meeting different machining requirements.

Referring to fig. 14, a fifth embodiment of the present invention is a milling and tapping integrated tool, which is different from the fourth embodiment in the connection relationship between the tool bit 41 and the tool bar 42. The cutting head 41 also has a threaded portion 413 extending from one end of the extension 412 along the axis L2 in a direction away from the milling unit 6. One end of the cutter bar 42 close to the cutter head 41 is recessed along the direction of the axis L2 to form a screw groove 420 for the screw connection portion 413 to screw, so that the cutter head 41 can be detachably connected to the cutter bar 42, thereby improving the installation applicability, facilitating the operation and shortening the installation time.

It should be noted that the fifth embodiment is not limited to the thread form of the thread groove 420, and may correspond to design specifications of different plants, such as ACME (ACME), and the thread connection portion 413 corresponds to the thread form of the thread groove 420.

To sum up, the utility model discloses a milling hole attacks tooth integral type cutter passes through milling hole unit 6 with attack tooth unit 5 and together set up design on the base 4, the cooperation milling hole sword 611 with under attacking tooth 51's the effect, only need single operating procedure can carry out the operation of milling hole and thread cutting simultaneously to reach the milling hole and attack the efficiency of tooth integration, improve the efficiency of construction from this. In addition, since the milling edge 611 is arc-shaped, the milling and tapping integrated tool can be pushed around the minor axis L3 by the operation of the machine tool controlled by the computer numerical value under the condition of small abrasion, so that a screw hole with a size larger than the self-structure and an inner diameter specification capable of being freely changed is machined, the variability and accuracy of machining are improved, and the purpose of the present invention can be achieved.

The above description is only for the preferred embodiment of the present invention, but it is not intended to limit the scope of the present invention, and any person skilled in the art can make further modifications and variations without departing from the spirit and scope of the present invention, therefore, the scope of the present invention should be determined by the claims of the present application.

Claims (9)

1. A hole milling and tapping integrated tool, comprising:

a base extending along an axis to be columnar;

the tapping unit is positioned on the outer periphery of the base and comprises a plurality of tapping pieces which extend along the axial direction of the axis and are arranged around the axis at intervals, and each tapping piece is provided with a plurality of tooth knives which are arranged at intervals and are parallel to each other; and

the hole milling unit is positioned at one end of the base and comprises a plurality of hole milling pieces distributed around the axis, each hole milling piece is provided with a hole milling blade which is protruded and extended to form a curve along the axial direction of the axis and is far away from the base, and the hole milling blade is sunken to form a chip groove.

2. The integrated milling and tapping tool as claimed in claim 1, wherein: the outer peripheries of any two milling hole cutting edges which are positioned on two opposite sides along the radial direction of the base form an imaginary contour line together, and the imaginary contour line is in an arc line at a viewpoint vertical to the axis.

3. The integrated milling and tapping tool as claimed in claim 1, wherein: the outer peripheries of any two milling hole cutting edges which are positioned on two opposite sides along the radial direction of the base form an imaginary contour line together, and the imaginary contour line is presented into two mutually connected arc lines under a viewpoint in the direction vertical to the axis.

4. The integrated milling and tapping tool as claimed in claim 1, wherein: the tapping unit is connected with the hole milling unit, and the tapping pieces respectively extend integrally from the hole milling pieces.

5. The integrated milling and tapping tool as claimed in claim 1, wherein: the outer peripheral surface of base inwards caves in and forms a plurality of spread grooves of mutual interval, the tooth of attacking piece can take off separately set up in the spread groove.

6. The integrated milling and tapping tool as claimed in claim 1, wherein: the base has two and separates each other and the cooperation defines out the confession the connecting portion of the recess that the milling unit set up, and links up connecting portion just follow the extension that the axis extends, each connecting portion by the surface toward the direction of axis is sunken to form the locating hole, the milling unit forms to follow the radial direction of base extends and can communicate the through-hole of locating hole, the milling unit still including be used for wearing to establish the locating hole with the locking part of through-hole makes the milling unit can pull apart ground and connect the base.

7. The integrated milling and tapping tool as claimed in claim 1, wherein: the base includes the confession the tool bit that the hole milling unit set up, and can connect with breaking away from the cutter arbor of tool bit, the tool bit has along the axis is kept away from the screw portion that the direction of hole milling unit extends, the one end of cutter arbor is followed the direction of axis is sunken to form the confession the spiral shell groove that screw portion screw thread was established.

8. The integrated milling and tapping tool as claimed in claim 1, wherein: the hole milling unit, the tapping unit and the base extend integrally.

9. The integrated milling and tapping tool as claimed in claim 1, wherein: the extension direction of each toothed cutter is perpendicular to the direction of the axis.

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