TW201538257A - Milling machine knife bar device capable of rapidly replacing tool clamping member - Google Patents

Abstract

This invention is a milling arbor machine knife bar capable of rapidly replacing tool clamping machine mainly comprising a knife bar body and a tool clamping member. One end of the knife bar body forms an assembling section. A receiving slot is recessed at the assembling section; and furthermore, more than one locking members are disposed at the surrounding of the assembling section. The tool clamping member is correspondingly combined to the assembling section and is fixated more than one locking members via rotational movement. This invention, without detaching the tool bar body, locks and loosens the tool clamping member through rotational manner to achieve the purpose of rapid replacement. The tool clamping member has many different models capable of being provided for disposing various tools and has advantages of high adaptability and cost reduction.

Description

Milling tool holder device capable of quickly replacing tool holders

The present invention relates to a tool holder for a milling machine, and more particularly to a milling tool holder device that can quickly replace a tool holder.

The general milling machine can be divided into two types: traditional milling machine and CNC numerical control milling machine. Generally, the traditional milling machine is mostly controlled by hand, while the CNC numerical control milling machine is mainly controlled by automatic control, which can speed up the working speed and reduce the working hours. Time-consuming and labor-intensive operating procedures, such as tool change, workpiece positioning, etc., take a lot of time to operate, and the replacement of the tool is the most troublesome, and the number of times is a lot of time wasted. Generally, the conventional milling machine or the CNC numerical control milling machine replaces the cutter bar, and the cutter bar clamp is mainly provided in the spindle head of the milling machine, which can be used for clamping or loosening the cutter bar.

Among them, the arbor can be divided into the NT arbor for the traditional milling machine and the BT arbor for the CNC numerical control milling machine. The difference is that a ring clamping groove is added to the BT arbor for the clamping of the jaw on the automatic tool change system. To replace the tool holder.

The common shank can be divided into three types according to the clamping method:

1. The thermal expansion type arbor: the shank is integrally formed and a shaft hole is arranged in the head, and the arbor is heated by a heater, so that the shaft hole portion of the arbor is reamed when heated, and the tool is directly inserted into the shaft. In the hole, and wait for the tool holder to be cold However, the shaft hole is restored to the original state to achieve the purpose of clamping the tool, wherein the tool can be a milling cutter, a boring cutter, a drill bit, etc., because the shank must undergo repeated changes in heat expansion and contraction, and must provide good tools. The clamping effect, therefore, the material selected for the arbor itself is usually made of hot-moulded alloy steel, which is costly.

Second, the collet type arbor: as shown in FIG. 10, a arbor 40 is matched with an elastic collet 50, and the cutter is combined with the elastic collet 50, wherein the shank 40 has a through hole. 41, the collet 50 is disposed in the shaft hole 41 of the shank 01. The elastic collet 50 has a screw hole 51 in the upper section, and has a plurality of pressing plates 52 which are externally stretched, and the elastic collet 50 utilizes The bolt 53 is locked, and the outer circumferential surface of the elastic collet 50 is in close contact with the inner wall surface of the shaft hole 41, so that the elastic collet 50 can be clamped by the pressing plates 52 to clamp the cutter.

Third, the screw-type arbor: as shown in FIG. 11, a arbor 60 is combined with a locking screw 70 to combine a cutter 80, wherein a set of columns 61 is formed at the front end of the shank 60, and is placed on the sleeve. The end face of the end face of the 61 is provided with a coupling screw hole 611, and the cutter 80 is recessed at the rear end with a set of holes 81 having an inner diameter larger than the outer diameter of the sleeve 61, so that the cutter 80 is correspondingly sleeved through the sleeve hole 81. On the sleeve 61 of the arbor 60, the locking bolt 70 is inserted through the sleeve hole 81 to lock the cutter 80 in the coupling screw hole 611 of the shank 60, so that the shank 60 and the cutter 80 are Firmly combined with solid assembly.

Among the various arbor rods mentioned above, whether it is the NT arbor for the traditional milling machine or the BT arbor for the numerically controlled milling machine, it is necessary to replace the entire arbor and the knives of different sizes and sizes for different processing, except for disassembly and assembly. The replacement speed is slow, the time is wasted, and the applicability is low and the cost is high. There is a need for improvement.

In order to solve the problems that the existing cutter bar needs to replace the entire cutter bar and the cutters of different sizes and sizes for different machining, the disassembly and assembly replacement speed is slow, the time is wasted, the applicability is low, and the cost is high, the main purpose of the invention is It is to provide a milling tool holder device that can quickly replace a tool holder.

The technical means used in the present invention is to provide a milling cutter holder device capable of quickly replacing a tool holder, comprising a cutter body and a cutter holder; wherein a cutter body forms an assembly portion at one end thereof. The assembly part is recessed with a receiving groove, and more than one locking hole is defined in the assembly portion around the receiving groove, and a locking member is respectively coupled to each locking hole; a cutter clamping member is disposed and combined The assembly portion includes an abutting seat portion and a cutter mounting portion. The abutting seat portion surrounds the middle portion to form a ring edge, and the top surface of the ring edge is provided with more than one sliding hole at each sliding hole. One end of the tool holder is formed with a through hole, and the tool holder has a convex portion corresponding to the receiving groove. The tool mounting portion is integrally connected to the abutting portion and extends forward. The tool mounting portion defines a tool hole, the tool holder is correspondingly inserted into the receiving groove of the tool body, and correspondingly inserts more than one lock with the hole of the abutting seat, and rotates the tool Tool holder Each locking member are engaged with the slide hole corresponding to the.

The foregoing milling tool holder device capable of quickly replacing a tool holder, wherein the tool mounting portion holds a tool in a thermal expansion and contraction manner, the tool The diameter is greater than the diameter of the tool hole at normal temperature.

The aforementioned milling tool holder device capable of quickly replacing the tool holder, The tool mounting portion is a side-mounted clamp, and one or more pressing holes connected to the cutter hole are formed on an outer circumference of the cutter mounting portion, and a pressing member is respectively coupled to each of the pressing holes.

The aforementioned milling tool holder device capable of quickly replacing the tool holder, Wherein the tool mounting portion is a collet-type clamping, and the tool holder further comprises a collet and a pressing ring, wherein the tool hole is a tapered hole, and the outer periphery of the front end of the tool mounting portion is provided with a thread, The collet is correspondingly disposed in the cutter hole, and the pressing ring correspondingly covers the collet and is screwed to the thread.

The aforementioned milling tool holder device capable of quickly replacing the tool holder, The tool mounting portion is a screw-type clamping, the tool clamping member is stepped, and the tool hole is a screw hole.

The aforementioned milling tool holder device capable of quickly replacing the tool holder, Each of the locking fasteners is a bolt and has a threaded portion and a head having a larger diameter than the threaded portion, and each of the sliding holes is a long hole with a curved arc, wherein each sliding hole has a large diameter and a small diameter respectively. The large diameter of each sliding hole is the same as the diameter of the head of each of the fasteners, and the small diameter of each sliding hole is the same as the diameter of the threaded portion of each of the fasteners.

The present invention utilizes the provided quick replaceable tool holder Milling tool holders, the enhancements that can be achieved include:

1. Through the tool holder body designed by the invention, whether it is applied to the NT tool bar for the traditional milling machine or the BT tool bar for the numerical control milling machine, the tool holders of different specifications and shapes can be quickly replaced for different processing. Instead of replacing the entire tool holder body, and replacing the tool holder separately In addition to the speed of loading, disassembling and replacing, it also has the advantages of high applicability and cost reduction.

2. The tool holder of the invention is provided with a quick-fixing locking groove and a perforation, and the tool holder can be rotated to loosen the lock on the holder body without being completely removed. After the positive perforation, the operation of disassembly and replacement is performed quickly, and the processing efficiency is extremely high.

10‧‧‧Cutter body

11‧‧‧Clamping Department

12‧‧‧ Assembly Department

121‧‧‧ accommodating slots

122‧‧‧Lock hole

13‧‧‧Locker

131‧‧‧Threading Department

132‧‧‧ head

20, 20A, 20B, 20C‧‧‧ tool holders

21‧‧‧After the seat

210‧‧‧ rim

211‧‧‧Sliding hole

212‧‧‧Perforation

213‧‧‧ convex

22, 22A, 22B, 22C‧‧‧Tools Installation Department

221, 221A, 221B‧‧‧ tool holes

222‧‧‧tight holes

223‧‧‧forced parts

224‧‧ thread

23‧‧‧ Collet

24‧‧‧Forcing the ring

30, 30A, 30B, 30C‧‧‧ Tools

31‧‧‧ bolt

40‧‧‧Cutter

41‧‧‧Axis hole

50‧‧‧Flexible collet

51‧‧‧ screw holes

52‧‧‧ pressure plate

53‧‧‧Bolts

60‧‧‧Cutter

61‧‧‧ sets of columns

611‧‧‧ Combined with screw holes

70‧‧‧Locking screw

80‧‧‧Tools

81‧‧‧ hole sets

Figure 1 is an external view of a first preferred embodiment of the present invention.

Figure 2 is an exploded view of the first preferred embodiment of the present invention.

Figure 3 is an external view of a second preferred embodiment of the present invention.

Figure 4 is an exploded view of a second preferred embodiment of the present invention.

Figure 5 is an external view of a third preferred embodiment of the present invention.

Figure 6 is an exploded view of a third preferred embodiment of the present invention.

Figure 7 is an external view of a fourth preferred embodiment of the present invention.

Figure 8 is an exploded view of a fourth preferred embodiment of the present invention.

Figure 9 is a cross-sectional view showing a fourth preferred embodiment of the present invention.

Figure 10 is a cross-sectional view of a conventional collet type arbor.

Figure 11 is an exploded view of a conventional screw-on arbor.

In order to understand the technical features and practical effects of the present invention in detail, and in accordance with the contents of the specification, the following is further described in detail with reference to the preferred embodiments shown in the drawings: the present invention can quickly replace the tool holder For the milling tool holder device of the piece, please refer to the first preferred embodiment of FIG. 1 and FIG. 2, which includes A tool holder body 10, a tool holder 20 and a cutter 30.

As shown in FIG. 1 and FIG. 2, the shank body 10 is along the front, An elongated rod body extending in a rear direction and having two ends, the shank body 10 is formed with a tapered nip portion 11 at one end, and protrudes at a different end to form a cylindrical assembly portion 12, and the assembly portion 12 is concave. A plurality of locking holes 122 are defined in the assembly portion 12 , and each of the locking holes 122 is a screw hole. The locking holes 122 are respectively coupled with a locking member 13 . Each of the fasteners 13 is a bolt and has a threaded portion 131 and a head portion 132 having a larger diameter than the threaded portion 131. Each of the fasteners 13 is correspondingly locked in each of the locking holes 122 and can be rotated and adjusted. Acting up and down.

The tool holder 20 is correspondingly disposed on the tool body 10, The tool holder 20 includes an abutting seat portion 21 and a tool mounting portion 22. The abutting seat portion 21 defines a ring edge 210 around the outer circumference. The abutting seat portion 21 defines a plurality of sliding holes 211 on the front side surface. Each sliding hole 211 is a curved counterbore long hole, each sliding hole 211 has a large diameter and a small diameter, and the large diameter of each sliding hole 211 is the same as the diameter of the head 132 of each of the locking members 13, respectively. The diameter of the sliding hole 211 is the same as the diameter of the threaded portion 131 of each of the locking members 13. A through hole 212 is formed at the same end of each sliding hole 211 to communicate with the sliding hole 211. The diameter of the through hole 212 is larger than the diameter of each sliding hole. The diameter of the protrusion 211 is the same as the diameter of the head 132 of each of the fasteners 13. The cutter holder 20 has a cylindrical protrusion 213 protruding downward from the lower end, and the protrusion 213 has a diameter. The same as the diameter of the accommodating groove 121, the tool holder 20 is correspondingly disposed in the accommodating groove 121, and the tool mounting portion 22 is heated. The cutter is clamped in a manner of expanding and contracting, and is integrally connected to the abutting seat portion 21 and extends forward. A cutter hole 221 through which the cutter is bored is formed in the cutter mounting portion 22.

The cutter 30 is correspondingly fixed to the cutter hole 221, the cutter The diameter of the tool 30 is larger than the diameter of the tool hole 221 at normal temperature. After the tool mounting portion 22 is heated by the heater, the tool hole 221 is expanded, and the tool 30 can be inserted into the tool hole 221 correspondingly. After the portion 22 is cooled, it is cooled and contracted and the tool 30 is tightened.

The manner of use of the preferred embodiment of the present invention is shown in Figures 1 and 2 As shown, the tool 30 can be fixed to the tool mounting portion 22 of the tool holder 20 by heating. The tool holder 20 passes through the respective fasteners 13 with the respective through holes 212, and rotates the tool holder. The piece 20 engages the head 132 of each of the locking members 13 into each of the sliding holes 211, and locks the respective locking members 13 to firmly fix the tool holder 20 to the holder body 10; likewise, disassembles When the locks 13 are loosened, the cutter holder 20 is removed in a rotating manner, so that the tool holder 20 can be quickly replaced.

A second preferred embodiment of the present invention is illustrated in Figures 3 and 4 It is substantially the same as the first preferred embodiment, with the difference that the tool mounting portion 22A is a side-mounted clamp, and the cutter 30A can be a milling cutter and correspondingly disposed on the cutter holder 20A.

Wherein, the diameter of the cutter hole 221A of the tool mounting portion 22A Equal to the diameter of the cutter 30, a plurality of pressing holes 222 connected to the cutter hole 221A are formed on the outer circumference of the cutter mounting portion 22A, and a pressing member 223 is respectively coupled to each of the pressing holes 222 for each pressing member. 223 forced to close The cutter 30 is fixed to the cutter holder 20A by the side of the cutter 30. The cutter holder 20A and the cutter body 10 are detached and assembled in the same manner as in the first preferred embodiment. It will not be explained here.

A third preferred embodiment of the present invention is shown in FIGS. 5 and 6 It is substantially the same as the first preferred embodiment, except that the tool mounting portion 22B is a collet-type clamping, and the cutter 30B can be a drill or a boring cutter, and is correspondingly disposed on the cutter holder 20B.

Wherein, the tool holder 20B further comprises a tube a cutter hole 221B of the cutter mounting portion 22B is a tapered hole, and a thread 224 is disposed on the outer periphery of the front end of the cutter mounting portion 22B. The collet 23 is correspondingly disposed in the cutter hole 221B. The tightening ring 24 correspondingly covers the collet 23 and is screwed to the thread 224. The cutter 30B is correspondingly disposed in the collet 23 and is screwed through the pressing ring 24 to enable the cutter 30B to be It is fixed in the tool holder 20B. The manner in which the tool holder 20B and the holder body 10 are detached and assembled is the same as in the first preferred embodiment, and therefore will not be described here.

A fourth preferred embodiment of the present invention is illustrated in Figures 7 through 9 It is substantially the same as the first preferred embodiment, with the difference that the tool mounting portion 22C is a screw-on clamping, and the tool 30C is a face milling cutter and is correspondingly disposed to the tool holder 20C.

Wherein, the tool mounting portion 22C is stepped and the knife The hole 221C is a screw hole, and the cutter 30C is correspondingly fitted to the front end of the tool holder 20C, and the cutter 30C is threaded through a bolt 31 and screwed to the cutter hole 221C so that the cutter 30C can be fixed to the cutter 30C. On the tool holder 20C, the tool holder 20B is detached from the holder body 10 The manners are the same as those in the first preferred embodiment, and therefore will not be described here.

The present invention forms an assembly portion 12 at the front end of the shank body 10, And the assembly portion 12 is provided with a locking member 13 which is rotatably fixed to the locking member 13 and the assembly portion 12, and then locks the locking member 13 to tighten the tool clamping. The pieces 20, 20A, 20B, 20C, so that the tool holder body 10 does not need to be replaced during the machining process, and only the tool holders 20, 20A, 20B, 20C need to be directly disassembled to replace different ones. The tool can be used, it can also be applied to a variety of different tool holders and tools, and it can also reduce the cost of repurchasing different tools, which is quite practical and convenient.

The above is only a preferred embodiment of the present invention, not The present invention is not limited to any form, and any equivalents of local variations or modifications made by the teachings of the present invention can be made without departing from the spirit and scope of the present invention. For example, they are still within the scope of the technical features of the present invention.

10‧‧‧Cutter body

20‧‧‧Tool holders

30‧‧‧Tools

Claims (6)

A milling cutter holder device capable of quickly replacing a tool holder, comprising: a cutter body having an assembly portion formed at one end thereof, a receiving groove recessed in the assembly portion, and the assembly portion surrounding the receiving groove There is more than one locking hole, and each of the locking holes is respectively coupled with a locking member; a tool clamping member is disposed to be coupled to the assembly portion, and includes an abutting seat portion and a cutter mounting portion, the abutting The seat portion is formed around the middle portion to form a ring edge, and more than one sliding hole is formed in the top surface of the ring edge, and a through hole is formed at one end of each sliding hole to penetrate each of the locking members, and the tool holding member is protruded from below. a tool portion corresponding to the accommodating groove, the tool mounting portion is integrally connected to the abutting seat portion and extending forwardly, and a cutter hole is formed in the tool mounting portion, and the tool holder is correspondingly inserted into the convex portion The accommodating groove of the shank body is correspondingly inserted into the one or more fasteners corresponding to the through holes of the seat portion, and the tool holder is rotated to engage the respective locking members into the corresponding sliding holes. The milling tool holder device for quickly replacing a tool holder according to claim 1, wherein the tool mounting portion holds a tool in a thermal expansion and contraction manner, the diameter of the tool being larger than a diameter of the tool hole at a normal temperature. The milling tool holder device capable of quickly replacing the tool holder according to claim 1, wherein the tool mounting portion is a side-mounted clamping, and the outer periphery of the tool mounting portion is provided with more than one tight connection to the tool hole. The holes are combined with a pressing member in each of the pressing holes. A milling tool holder device capable of quickly replacing a tool holder as claimed in claim 1, wherein the tool mounting portion is a collet type clamping, and the tool holder Further comprising a collet and a pressing ring, the tool hole is a tapered hole, and a thread is arranged on an outer circumference of the front end of the tool mounting portion, and the collet is correspondingly disposed in the tool hole, and the pressing ring correspondingly covers the The collet is screwed to the thread. The milling tool holder device capable of quickly replacing the tool holder according to claim 1, wherein the tool mounting portion is a screw-type clamping, the tool clamping member is stepped, and the tool hole is a screw hole. A milling cutter holder device capable of quickly replacing a tool holder according to any one of claims 1 to 5, wherein each of the fasteners is a bolt and has a threaded portion and a head having a larger diameter than the threaded portion, each sliding The hole is a long hole with a curved arc shape, wherein each sliding hole has a large diameter and a small diameter, and the large diameter of each sliding hole is the same as the diameter of the head of each lock, and the small diameter of each sliding hole is the same as The diameter of the threaded portion of each fastener.