TWM473891U - Tool holder capable of replacing tool - Google Patents

Description

Replaceable tool arbor

The present invention relates to a machined cutting tool, and more particularly to a tool holder for a replaceable tool.

The general arbor is attached to the bottom of the arbor, and the upper end of the arbor is coupled with the main shaft collet of the processing machine, and the cutter for driving the arbor by the main shaft is used for machining and cutting, and the conventional arbor is attached to the knive. The outer periphery of the rod is provided with a perforation, and the bolt is locked in the perforation, and the tool penetrated into the cutter bar is tightened and fixed by the bolt, so that the cutter does not fall during the processing, but the bolt is laterally The method of pressing and fixing is not easy to align with the center of the tool, so that the tool will be yawed during the operation, which will affect the processing quality.

In order to solve the problem that the traditional arbor is easy to produce yaw in the clamping tool, there is a hot-mounted arbor on the market, which uses the method of thermal expansion and contraction to bond the tool to the arbor, so that the tool does not need any parts. It can be fixed to the arbor, and the material characteristics and the radial clamping force of the arbor itself can effectively clamp the tool to solve the problem that the tool is easy to yaw when rotating, but the hot-mounted arbor Usually it is integrally formed, and it is not easy to replace after the tool is combined. If it is deformed by multiple heating, it is necessary to replace the entire set of hot-mounted arbor, which is extremely expensive, so it is necessary to improve.

In order to solve the problem that the traditional arbor is a laterally tight locking tool, it is difficult to align the center and the existing hot-mounted arbor is integrally formed and the tool is not easy to replace, and the replacement cost is high when damaged, the main problem of the new type The purpose is to provide a tool holder for a replaceable tool, which has the advantages that the conventional tool can easily change the tool and the hot-mounted tool bar is less prone to yaw during processing.

The technical method used in the present invention is to provide a tool holder for a replaceable tool, comprising a main tool holder, a replaceable tool set and a lock fastener; wherein the main tool holder has a mounting hole formed on the rear end surface thereof, The mounting hole extends rearward and forward along the axial direction of the main shank, and a shank fitting hole is formed on the front end surface of the main shank, the shank fitting hole is along the axial direction of the main shank Extending backwardly, a connecting portion is formed between the mounting hole and the shank mounting hole, and a through hole communicating with the mounting hole and the shank fitting hole is formed in a center of the connecting portion, the through hole The inner diameter is smaller than the inner diameter of the mounting hole, and one or more water inlet grooves are formed on the outer circumference of the main shank, and the one or more water inlet grooves are L-shaped and extend below the main shank; The tool set includes a hot-mounted shank and a cutting tool, and a hollow nip is formed in the front part of the hot-mounted shank, and the cutting tool is fixed to the holding of the hot-mounted shank Segment, the replaceable tool set is the rear end of the hot-mounted shank Corresponding to the shank fitting hole, one or more water outlet holes corresponding to the one or more water inlet grooves are provided on an outer circumference of the inclined taper portion of the hot-mounted shank, and the one or more water outlet holes are respectively The plurality of inlet grooves are aligned; the fastener is correspondingly mounted by the mounting hole, and the end is inserted through the perforation to be coupled to the rear end of the hot-fit shank.

The arbor of the replaceable cutter, wherein the shank fitting hole has a tapered cone section and an upright section, wherein the inclined cone section is a tapered cone portion whose opening is tapered from front to back, the straight section Attached to the rear of the inclined cone section and forming a straight pipe portion along the axial direction, the hot-mounted shank sequentially forms a fitting portion, a tapered portion and a holder in the axial direction from the rear to the front. The length of the fitting portion is shorter than the length of the upright portion, and the diameter of the fitting portion is less than or equal to the inner diameter of the straight portion, and the tapered portion is connected to the front end of the fitting portion, and the The taper of the inclined taper portion corresponds to the taper of the oblique taper segment, the clip portion is connected to the front end of the oblique taper portion and is tapered from the rear to the front, and the clamping section is formed on the tool holder portion. At the center of the tool set, the rear section of the hot-fit shank is correspondingly inserted into the shank fitting hole, and the tapered taper portion is closely attached to the inclined taper section.

The arbor of the replaceable tool, wherein the slanted taper portion is connected to the merging portion and is provided with a ring groove around the recess.

The arbor of the replaceable tool, wherein the tapered section has a taper of 3 degrees or less.

The arbor of the replaceable cutter, wherein the rear side of the fitting portion defines a threaded hole, the fastener has a head and a threaded portion extending forward from the head, the diameter of the head is smaller than The diameter of the mounting hole is equal to the diameter of the mounting hole, and the locking member is inserted into the mounting hole, and the threaded portion is inserted through the through hole to be screwed to the screw hole of the hot-mounted shank.

The arbor of the replaceable cutter, wherein one or more water inlet grooves are formed in an outer circumference of the main shank, and the one or more water inlet grooves are L-shaped and extend below the main shank, The outer circumference of the inclined taper portion of the shank is provided with one or more water outlet holes corresponding to the one or more water inlet grooves, and the one or more water outlet holes are aligned with the one or more water inlet grooves.

The novel enhancements that can be achieved with the toolholders of the replaceable tools provided include:

1. The main tool holder of the present invention can replace the replaceable tool set according to different processing requirements, and the replaceable tool set is combined with the cutting tool by the hot-fit type clamping handle, which has better assembly precision and shock resistance, when the tool can be replaced. When the group is damaged, it is not necessary to replace it together with the main tool holder, which has better economic benefits.

2. The replaceable tool set of the present type is tightened by the rear side of the main shank with the lock fastener, because the position of the lock screw is tightly in the same axial direction as the main shank and the replaceable tool set, so when the lock is locked There is no problem of yaw due to lateral forces.

3. The main shank of the present type and the outer circumference of the replaceable cutter set are respectively provided with a water inlet groove and a water outlet hole, so that the coolant can enter from the water inlet groove and be discharged from the water outlet hole to cool the main shank and the exchangeable tool set. .

10‧‧‧Master handle

11‧‧‧ taper handle

110‧‧‧Mounting holes

12‧‧‧Flange

13‧‧‧Clamping Department

130‧‧‧Knife handle hole

1301‧‧‧ oblique cone

1302‧‧‧Upright section

14‧‧‧Connecting Department

140‧‧‧Perforation

15‧‧‧Into the ditch

20, 20A‧‧‧changeable tool set

21‧‧‧Hot-mounted shank

211‧‧‧Fitting Department

2110‧‧‧ screw holes

212‧‧‧Bevel

2120‧‧‧ Ring groove

213‧‧‧Knife holder

2130‧‧‧Clamping section

214, 214A‧‧‧ water outlet

22, 22A‧‧‧ cutting tools

30‧‧‧Locker

31‧‧‧ head

310‧‧‧Slots

32‧‧‧Threaded Department

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

Figure 2 is a perspective, cross-sectional view of the preferred embodiment of the present invention.

Figure 3 is a front cross-sectional view of the preferred embodiment of the present invention.

4 is a schematic view showing the operation of replacing a replaceable tool set according to a preferred embodiment of the present invention.

Figure 5 is an external view of the replaceable tool set of the preferred embodiment of the present invention.

In order to be able to understand the technical features and practical effects of the present invention in detail, and in accordance with the contents of the specification, further illustrated in the following preferred embodiments, the following is a detailed description of the following: For the rod, please refer to the preferred embodiment of FIGS. 1 to 4, including a main shank 10, an exchangeable tool set 20 and a lock 30.

The main shank 10 is formed with a taper shank portion 11, a flange portion 12 and a clamping portion 13 in the axial direction from the rear to the front. The rear end surface of the taper shank portion 11 defines a mounting hole 110. The mounting hole 110 extends from the rear to the front in the axial direction of the main shank 10, and a shank fitting hole 130 is formed on the front end surface of the clamping portion 13, and the shank fitting hole 130 is along the shank The axial direction of the main shank 10 extends from the front to the rear, and the shank fitting hole 130 has a slanted cone section 1301 and an upright section 1302. The inclined cone section 1301 is a slanting opening which is gradually tapered from front to back. a taper tube portion, and the taper of the inclined taper segment 1301 is less than or equal to 3 degrees, and the upright segment 1302 is connected to the rear of the inclined taper segment 1301 and forms a straight pipe portion along the axial direction, and the mounting hole 120 and the A connecting portion 14 is formed between the shank fitting holes 130. A through hole 140 is formed in the center of the connecting portion 14 to communicate with the mounting hole 120 and the shank mounting hole 130. The inner diameter of the through hole 140 The inner diameter of the upright section 1302 and the mounting hole 110 is smaller than that, and a water inlet 15 is respectively formed on both sides of the outer circumference of the main shank 10, and the two water inlets 15 are respectively provided. It is L-shaped and extends below the main shank 10.

The replaceable tool set 20 includes a hot-fit shank 21 and a cutting tool 22, and the hot-fit shank 21 sequentially forms a fitting portion 211 and a tapered portion from the rear to the front in the axial direction. And a shank portion 213, the shank portion 211 is formed in an upright cylindrical shape, and a screw hole 2110 is defined in a rear side of the mounting portion 211. The length of the fitting portion 211 is shorter than the straight portion 1302. Length and the loading The diameter of the joint portion 211 is less than or equal to the inner diameter of the upright portion 1302. The tapered portion 212 is connected to the front end of the fitting portion 211, and the oblique tapered portion 212 is connected to the fitting portion 211 to surround the recessed portion. There is a ring groove 2120, which can avoid the sharp corners generated at the two joints from hitting the handle fitting hole 130. The taper of the inclined taper portion 212 corresponds to the taper of the oblique taper segment 1301, and the clip portion 213 is connected. The front end of the inclined taper portion 212 is tapered from the rear to the front, and a hollow clamping portion 2130 is formed in the front portion of the clip portion 213. The cutting tool 22 can be a drill bit, an end mill, In the embodiment, the cutting tool 22 is a drill bit. In the unconnected state, the diameter of the cutting tool 22 is larger than the diameter of the cutter. The clamping cutter 22 is coupled to the clamping section 2130 of the hot-mounted shank 21 by thermal expansion and contraction, and the clamping section 2130 is baked and heated by a heating device. After the clamping section 2130 is expanded and the inner diameter is temporarily enlarged, the rear end of the cutting tool 22 is inserted into the clamping section 2130. After the clamping section 2130 is cooled and retracted radially inwardly, the cutting tool 22 can be clamped tightly, and the replaceable tool set 20 is inserted into the handle with the rear section of the hot-mounted tool holder 21 The hole 130 is closed, and the tapered portion 212 is closely attached to the inclined cone portion 1301. Two outer peripheral portions of the tapered tapered portion 212 of the hot-mounted shank 21 are respectively provided with two corresponding water inlet grooves 15 . a water outlet hole 214, and the two water outlet holes 214 are aligned with the two water inlet grooves 15, and when the hot-loading tool holder 21 is mounted on the main tool holder 10, the two water outlet holes 214 and the two water inlet grooves 15 The through hole is formed so that the coolant can enter from the two water inlet grooves 15 and be discharged from the two water outlet holes 214, and the main tool holder 10 and the exchangeable tool group 20 are cooled.

The locking member 30 has a head portion 31 and a threaded portion 32 extending forwardly from the head portion 31. A slot 310 is defined in the rear side of the head portion 31 for the hand tool to rotate the locking member 30. The diameter of the portion 31 is less than or equal to the diameter of the mounting hole 110. The locking member 30 is inserted into the mounting hole 110, and the threaded portion 32 is inserted through the through hole 140 to be fixedly coupled to the hot-mounted shank 21. Screw hole 2110.

The embodiment of the preferred embodiment of the present invention is as shown in FIG. 1 and FIG. 4, and the replaceable tool set 20 is correspondingly inserted into the main shank 10, and is locked to the replaceable tool by the lock 30. Group 20 In the rear, since the lock 30 is a rear pull lock, the locking force of the lock 30 is formed in the same axial direction as the axial center of the hot-fit shank 21, and the replaceable cutter set 20 is hot. The assembled assembly is extremely stable during clamping, so when the replaceable tool set 20 is processed, the problem of lateral offset is less likely to occur.

As shown in FIG. 4 and FIG. 5, the present invention can remove the lock 30 to form the original replaceable tool set 20 in an alternative state, and use the main shank 10 to combine another set of replaceable tool sets 20A. The cutting tool 21A of the exchangeable tool set 20A is a tapping knife, so that the main tool holder 10 can replace the appropriate changeable tool set 20 for different purposes without the need of the main tool holder 10 And it is replaced, it is also very easy to replace, and has better economic benefits.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any person having ordinary knowledge in the art can use the present invention without departing from the technical features of the present invention. Equivalent embodiments of the novel modifications or modifications made by the novel teachings are still within the scope of the novel features.

10‧‧‧Master handle

11‧‧‧ taper handle

12‧‧‧Flange

13‧‧‧Clamping Department

20‧‧‧Replaceable tool set

21‧‧‧Hot-mounted shank

214‧‧‧ water outlet

22‧‧‧Cutting tools

Claims (5)

A tool holder for a replaceable tool, comprising: a main shank, the rear end surface is provided with a mounting hole, the mounting hole extending rearward and backward along the axial direction of the main shank, on the front side of the main shank The end face is provided with a shank fitting hole, and the shank fitting hole extends from the front to the rear along the axial direction of the main shank, and a connecting portion is formed between the mounting hole and the shank fitting hole. a through hole is formed in the center of the connecting portion, and the inner diameter of the through hole is smaller than the inner diameter of the mounting hole, and the outer circumference of the main shank is more than one a gutter, the one or more inlet channels are L-shaped and extend below the main shank; an exchangeable tool set comprising a hot-mounted shank and a cutting tool, the hot-mounted knives The front part of the shank forms a hollow clamping section, and the cutting tool is fixed to the clamping section of the hot-mounted shank, and the replaceable tool set is correspondingly disposed at the rear end of the hot-mounted shank The shank fitting hole is provided on the outer circumference of the inclined taper portion of the hot-mounted shank And corresponding to the water outlet holes of the one or more water inlets, and the one or more water outlet holes are aligned with the one or more water inlet grooves; a lock body is correspondingly loaded by the mounting holes, And the end of the heat-insulated shank is coupled and fixed at one end. The shank of the replaceable tool according to claim 1, wherein the shank fitting hole has a tapered cone section and a straight section, wherein the inclined cone section is a tapered cone whose opening is tapered from front to back. a straight portion connected to the rear of the inclined cone section and forming a straight pipe portion along the axial direction, the hot-fit shank sequentially forming a fitting portion and an oblique direction from the rear to the front along the axial direction a taper portion and a tool holder portion, the length of the fitting portion is shorter than the length of the upright portion, and the diameter of the fitting portion is less than or equal to the inner diameter of the upright portion, and the tapered portion is connected to the fitting portion a front end, and the tapered portion of the tapered taper portion corresponds to the taper of the oblique taper portion, the clip portion is connected to the front end of the inclined taper portion and is tapered from the rear to the front The clamping section is formed at the center of the shank portion, and the replaceable cutter set penetrates the shank fitting hole correspondingly with the rear section of the hot-mounted shank, and the slanting taper portion is closely attached. Fitted to the oblique cone section. The arbor of the replaceable tool of claim 2, wherein the slanted taper portion is connected to the merging portion and is provided with a ring groove around the recess. The arbor of the replaceable tool of claim 3, wherein the tapered section has a taper of 3 degrees or less. The tool holder of the replaceable tool according to any one of claims 2 to 4, wherein a rear side of the fitting portion defines a threaded hole, the fastener having a head and extending forward from the head a threaded portion having a diameter smaller than or equal to a diameter of the mounting hole, the locking member being inserted into the mounting hole, and the threaded portion is inserted through the through hole to be coupled to the screw of the hot-mounted shank hole.