TWM470715U - Disposable chamfer cutting tool - Google Patents

Description

Discarding chamfering tool

This creation is about an improved structure of a chamfering cutter, especially a discarded chamfering cutter with a disposable design.

Generally, after the workpiece is drilled, a chamfering tool is used to chamfer the hole, or a chamfer is applied to the edge of the workpiece to eliminate the hole or the burr of the workpiece.

The conventional chamfering cutter 5, as shown in the tenth figure, includes a cutter bar 51 and a conical cutter head 52 disposed at one end of the cutter bar 51. The conical cutter head 52 is provided with at least one siping 521. The sipe 521 is formed to form a cutting edge 522 on the side of the sipe 521 for chamfering the cutting hole or chamfering the edge of the workpiece.

However, the material of the chamfering cutter 5 described above is made of high speed tool steel (HSS), and the sipe 521 is formed by a wire cutting process, so the processing speed of the sipe 521 is slow and the processing cost is high. , directly affecting the manufacturing cost of the chamfering tool 5, and once the cutting edge 522 of the chamfering tool 5 is cracked during the machining process, it must be discarded and cannot be used any more, so the conventional chamfering tools are regarded as consumables. Can not be reused, highlighting the waste of materials and increasing production costs.

The chamfering tool made by the high speed tool steel (HSS) is processed by the sipe High and slow, it has the disadvantage of high production cost, and once the cutting edge of the chamfering tool is cracked in the process, it must be discarded and cannot be reused, which is not only wasteful but also increases production cost.

The artificial chamfering cutter comprises a cutter rod, one end of the cutter rod is provided with a conical cutter head, and the conical cutter head has a cone of a suitable angle, and the tapered surface of the conical cutter head is set at least One or more knife seat slots, the bottom surface of the knife seat groove is provided with a screw hole, the knife seat groove is accommodated in a discarding blade, and is locked by a screw, the discarding blade and the knife seat groove system In a trapezoidal shape, the front end has a narrow width and gradually increases in width toward the rear. The sides of the discarding blade and the seat groove have a beveled surface of a proper angle, and the beveled surface of the discarding blade is overlapped with the top surface. A blade is formed on the side.

This creation is a disposable design. When the blade is passivated or cracked, the blade can be replaced or replaced. The shank structure can be used continuously, which saves the cost for the user. The disposable blade and the knives are provided. In the shape of a ladder, the discarding blade can be used to limit the degree of freedom by inserting the ladder shape. At the same time, the design of the beveled surface is used to limit the degree of freedom of the blade, and then the screw can be firmly fixed. The blade is fixed in the slot seat, and the depth of the seat groove is 80% of the thickness of the blade, and the material of the knife seat groove is less than that of other discarded chamfering tools, so the rigidity of the tool is improved and the bending resistance is improved. The rigidity of the stress is better, the precision of cutting and the cutting ability are improved, and many advantages such as advancement and practicability are obtained.

10‧‧‧Cutter

20‧‧‧Conical tool head

21‧‧‧Knife slot

211‧‧‧ screw holes

22‧‧‧ oblique plane

30‧‧‧Disposable blades

31‧‧‧ oblique plane

32‧‧‧ top surface

33‧‧‧ Blade

40‧‧‧ screws

5‧‧‧Chamfering tools

51‧‧‧Cutter

52‧‧‧Conical cutter head

521‧‧‧ knife slot

522‧‧‧blade

The first picture is a three-dimensional system diagram of the creation

The second picture is a sectional view of the combination of the creation

The third picture is a perspective view of the abandoned blade of this creation.

The fourth picture shows the use of the 60-degree embodiment of the tapered tool head.

The fifth figure is an example of the use of the 90-degree taper head of this creation.

The sixth figure is an example of the use of the tapered tool head 120 degrees.

The seventh figure is an example of the use of a single knife slot and a disposable blade.

The eighth figure is an example of the use of the three tool holder slots and the discarding blades of the present invention.

The ninth figure is a diagram of the use of the five tool holder slots and the discarding blades of the present invention.

The tenth figure is a plan view of a conventional chamfering tool

Referring to the first and second figures, the present invention provides a discarded chamfering tool comprising a tool holder 10, and one end of the tool holder 10 is provided with a conical tool head 20, and the conical tool head 20 is suitably equipped. An angled cone, such as 30°, 45°, 60°, 90° or 120°, etc., the tapered surface of the tapered cutter head 20 is provided with at least one or more seat slots 21, the holder A screw hole 211 is defined in the bottom surface of the slot 21, and a discarding blade 30 is received in the seat groove 21 and locked by a screw 40.

Referring to the third figure, the discarding blade 30 has a trapezoidal shape with a narrow front end and gradually increases in width toward the rear. The sides of the disposable blade 30 each have an appropriate angle of the beveled surface 31. The beveled surface 31 and the two top surfaces 32 are each formed with a cutting edge 33.

Referring to the first figure, the seat groove 21 provided by the tapered tool head 20 has a trapezoidal shape and is gradually tapered downward from the top, and the both sides of the seat groove 21 have an appropriate shape. The angled beveled surface 22, the trapezoidal shape and the beveled surface 22 of the seat groove 21 are corresponding to the trapezoidal shape of the discarding blade 30 and the beveled surface 31 of the both sides.

The discarding blade 30 and the seat groove 21 of the present invention are in the shape of a long and narrow ladder. Therefore, when the inserting blade 30 is placed in the seat groove 21, it is restricted by the trapezoid to achieve the function of axial positioning. The function of the radial positioning is achieved by the restriction of the beveled surface 31 of the appropriate angle of the 30 sides of the disposable blade and the beveled surface 22 of the seat groove 21, and is locked by the screw 40, so that the disposable blade 30 is It can be firmly locked to the tapered cutter head 20.

Referring to the second figure, the depth of the seat groove 21 of the present invention is 80% of the thickness of the disposable blade 30. Therefore, when the disposable blade 30 is placed in the seat groove 21, the blade edge 33 of the disposable blade 30 is along. The taper shape of the tapered cutter head 20 is embossed out of the seat groove 21, and the workpiece is cut by the rotation of the cutter, so that the depth of the seat groove 21 is shallow, and the material of the tapered cutter head 20 is relatively removed. Less, so its rigidity is relatively increased, and the stress that can withstand is relatively high.

Referring to the first to third figures, the disposable blade 30 of the present invention has two correspondingly disposed blades 33. When the disposable blade 30 is placed in the seat groove 21, the blade 33 on one side thereof follows the tapered cutter head. The tapered shape of 20 is embossed out of the seat groove 21, and the blade 33 on the other side is located in the seat groove 21 of the corresponding side. When the blade 33 is passivated or cracked, the disposable blade 30 is turned over and replaced. The side edge 33 is continuously used, and the blade 33 of the present invention has a relatively long length, and is suitable for chamfering work with a larger aperture size range.

Referring to the fourth to sixth embodiments, the angle of the tapered tool head 20 is set to be 60°, 90° or 120° according to the operation. Etc., according to the needs of the workpiece, the countersunk hole or chamfering processing, the applicability is very wide and easy to change.

Referring to the seventh figure, the embodiment of the present invention is to use a single discarding blade 30, wherein one side of the holder groove 21 is provided with a disposable blade 30, and the other side of the holder groove 21 is provided. The support blade S is respectively accommodated, and the support blade S fills the gap of the seat groove 21, and is high. Balanced at the time of rapid rotation, and the support blade S is brought into contact with the cutting hole during cutting to achieve the function of supporting the entire chamfering cutter, avoiding excessive stress during single-blade cutting and bending the tool, affecting cutting efficiency and material removal. Dimensional accuracy; please refer to the eighth and ninth figures, which is an embodiment of the use of three disposable blades 30 and five disposable blades 30, and the number of the seat slots 21 and the disposable blades 30 is determined. The chamfering tool is designed to change the size and processing conditions, and the number of blades is flexible so that it can be changed according to the environment in which it is used, making the design of the tool more practical.

It can be seen from the foregoing description that the present invention provides a chamfering cutter of a discarding structure, the discarding blade having at least two correspondingly disposed cutting edges, a new cutting edge after the direction changing device can be used continuously, or replaced with a new one. The disposable blade eliminates the need for the entire tool to be discarded, and has the effect of cost saving. The discarding blade and the seat groove are in the shape of a ladder, and the axial and diameter of the blade are matched with the beveled surface of the blade and the seat groove. The orientation can be limited, and the locking of the screw can be firmly locked in the sipe holder; in addition, the depth of the locating groove is 80% of the thickness of the blade, and the material ratio of the shank groove is removed. Since there are few other chamfering cutters, the rigidity of the tool is improved, the rigidity against bending stress is better, the precision of cutting and the cutting ability are improved, and many advantages such as advancement and practicability, and the blade and the holder are created. The design of the slot is the first creation of the creation, in line with the requirements of novelty, it can meet the requirements of the new patent, and apply for it according to law.

However, the above-mentioned statements are only a preferred embodiment of the present invention, and all changes in the scope of the patents are subject to the scope of the patent.

10‧‧‧Cutter

20‧‧‧Conical tool head

21‧‧‧Knife slot

211‧‧‧ screw holes

22‧‧‧ oblique plane

30‧‧‧Disposable blades

40‧‧‧ screws

Claims (2)

A discarded chamfering tool comprising a arbor and a tapered cutter head at one end thereof, the tapered cutter head having a cone of a suitable angle, the tapered surface of the tapered cutter head being configured at least One or more knife seat slots, the bottom surface of the knife seat groove is provided with a screw hole, the blade seat groove is accommodated in a discarding blade, and is locked by a screw, and the discarding blade has a trapezoidal shape. The width of the front end is narrow and gradually increases toward the rear width. The sides of the disposable blade have a beveled surface of a proper angle, and the beveled surface forms a cutting edge with the top surface. The discarding chamfering tool of claim 1, wherein the seat groove has a trapezoidal shape and is gradually tapered downward from the top, and the knife seat has an appropriate angle on both sides thereof. The oblique side surface, the trapezoidal shape and the oblique side surface of the knife seat groove have a corresponding shape with the trapezoidal shape of the discarding blade and the oblique side surface of the two sides.