Disassembly Tool and Disassembly Method for Morse Taper Shank End Mill

Abstract

The present invention relates to the technical field of the disassembly of Morse taper shank end mills, and particularly to a disassembly tool for a Morse taper shank end mill, which includes a tool body detachably connected to the tool shank. The tool body is provided with a through hole axially penetrating from head to tail, through which a screwing member can rotatably pass. A blocking surface extending radially outward from the head end of the through hole is used to abut against the end face of the locking screw. When the tool body is connected to the tool shank, the blocking surface is opposite to the end face of the locking screw and has a spacing distance, and the spacing distance is less than the thread engagement length between the locking screw and the Morse taper shank end mill. The present invention also relates to a disassembly method, in which the tool body is connected to the tool shank, the screwing member is passed through the through hole of the tool body and the locking screw is screwed. The movement of the locking screw stops when the end face of its tail abuts against the blocking surface at the head end of the tool body. By continuously screwing the locking screw, the Morse taper shank end mill is withdrawn from the tool shank under the reaction force of the locking screw. The operation is simple, easy and safe.

Description

Technical Field

[0001] The present invention relates to the technical field of the disassembly of Morse taper shank end mills, and particularly relates to a disassembly tool and a disassembly method for Morse taper shank end mills. Background Art

[0002] Refer to Figure 1 and Figure 2 As shown in and, the Morse taper shank end mill 1 includes a connected cutting edge portion 11 and a Morse taper shank 12. The inside of the tool holder 2 for clamping the Morse taper shank end mill 1 is axially through from head to tail. A tapered hole 21 is provided at the head end inside the tool holder 2, and the tapered hole 21 has a taper that fits with the Morse taper shank 12. During installation, first insert the Morse taper shank 12 of the Morse taper shank end mill 1 into the tapered hole 21 at the head end of the tool holder 2, and then insert the locking screw 3 into the tool holder 2 from the tail end of the tool holder 2 and thread it with the tail end of the Morse taper shank 12. Tighten the locking screw 3 so that the end of the locking screw 3 presses tightly against the tool holder 2. Then, through the pulling force of the locking screw 3 and the extrusion force and frictional force between the tapered hole 21 of the tool holder 2 and the Morse taper shank 12, the Morse taper shank end mill 1 and the tool holder 2 can be completely locked.

[0003] During disassembly, since the extrusion force and frictional force between the tapered hole 21 of the tool holder 2 and the Morse taper shank 12 still exist after loosening the locking screw 3, the disassembly of the Morse taper shank end mill 1 is very troublesome. In the prior art, the disassembly of the Morse taper shank end mill 1 is achieved through the following four steps: The first step is to remove the locking screw 3 from the Morse taper shank 12 and withdraw it from the tool holder 2; the second step is to insert a special bolt for removing the tool from the tail end of the tool holder 2 and tighten it on the tail end of the Morse taper shank 12; the third step is to invert the tool holder 2 on a special base for removing the tool and use a hammer to strongly strike the special bolt for removing the tool so that the Morse taper shank 12 is withdrawn from the tapered hole 21 of the tool holder 2; the fourth step is to remove the special bolt for removing the tool from the Morse taper shank 12, and only then is the disassembly work of the Morse taper shank end mill 1 completed. This method is complex and difficult to operate, requires the operator to use a large amount of force, and there is a risk that the tool holder 2 will pop out from the special base for removing the tool or hit the hand due to improper control of the knocking force, which is likely to cause personal injury, and the floor of the operation site will also crack due to long-term knocking. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a disassembly tool and a disassembly method for Morse taper shank end mills, which are easy and safe to operate, so as to overcome the above-mentioned defects of the prior art.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A disassembly tool for a Morse taper shank end mill, which is used for disassembling and separating the Morse taper shank end mill from the tool holder. A locking screw that is threadedly connected to the Morse taper shank end mill is provided inside the tool holder. The disassembly tool includes a tool body that can be detachably connected to the tool holder. The tool body is provided with a through hole that runs through axially from end to end. A rotating member for screwing the locking screw can rotatably pass through the through hole. A blocking surface that extends radially outward from the first end of the through hole is used to abut against the end face of the end of the locking screw. When the tool body is connected to the tool holder, the blocking surface is opposite to and has a spacing distance from the end face of the end of the locking screw. The spacing distance is less than the thread engagement length between the locking screw and the Morse taper shank end mill.

[0007] Preferably, when the tool body is connected to the tool holder, the axis of the through hole coincides with the axis of the locking screw.

[0008] Preferably, the tool body is threadedly connected to the tool holder.

[0009] Preferably, the tail end of the tool holder has a fitting hole provided with internal threads, and an external thread for mating connection with the internal threads of the fitting hole is provided on the outer peripheral surface of the tool body.

[0010] Preferably, a tail cap that extends radially along the outer peripheral surface of the tail end of the tool body is used to abut against the end face of the tail end of the tool holder.

[0011] Preferably, the cross-sectional shape of the through hole is circular.

[0012] Preferably, the rotating member is a hex key.

[0013] A disassembly method for a Morse taper shank end mill, which uses the above-mentioned disassembly tool for a Morse taper shank end mill, and includes the following steps: Step 1: Fix the tool body of the disassembly tool to the tool holder, and the first end of the tool body is opposite to the end of the locking screw inside the tool holder; Step 2: Pass the rotating member through the through hole of the tool body, and then use the rotating member to screw the locking screw so that the locking screw moves towards the tool body. When the end face of the end of the locking screw abuts against the blocking surface at the first end of the tool body, the locking screw stops moving. Continue to use the rotating member to screw the locking screw so that the Morse taper shank end mill exits the tool holder under the reaction force of the locking screw.

[0014] Compared with the prior art, the present invention has significant progress:

[0015] By connecting the tool body to the tool holder, then passing the rotating part through the through-hole of the tool body, and using the rotating part to turn the locking screw, the locking screw moves towards the tool body. When the end face of the locking screw abuts against the blocking surface at the head end of the tool body, the locking screw stops moving, and the head end of the locking screw does not completely disengage from the Morse taper shank, and there is still a part screwed with the Morse taper shank. Continuing to turn the locking screw with the rotating part, since the end face of the locking screw is blocked by the blocking surface at the head end of the tool body and cannot move further, a reaction force will be exerted on the Morse taper shank under the rotation of the rotating part. The Morse taper shank disengages from the locking screw and exits the tool holder under the reaction force of the locking screw. Thus, the disassembly and separation of the Morse taper shank end mill and the tool holder are achieved. This process can be realized only through a turning action, and the operation is very simple, easy and safe. The operator does not need to use too much force and does not need to strike, which can effectively shorten the time required for disassembly and enable the operator to easily complete the disassembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an assembly schematic diagram of a Morse taper shank end mill and a tool holder.

[0017] Figure 2 is a sectional schematic diagram of the assembly of a Morse taper shank end mill and a tool holder.

[0018] Figure 3 is a schematic diagram when disassembling the Morse taper shank end mill using the disassembly tool of the embodiment of the present invention.

[0019] Figure 4 is an exploded schematic diagram when disassembling the Morse taper shank end mill using the disassembly tool of the embodiment of the present invention.

[0020] Figure 5 is a sectional schematic diagram when disassembling the Morse taper shank end mill using the disassembly tool of the embodiment of the present invention.

[0021] Among them, the reference numerals are explained as follows:

[0022] 1. Morse taper shank end mill 11. Cutting edge

[0023] 12. Morse taper shank 2. Tool holder

[0024] 21. Taper hole 22. Assembly hole

[0025] 3. Locking screw 31. End face of the locking screw

[0026] 4. Tool body 41. Through-hole

[0027] 42. Blocking surface 43. Tail cap

[0028] 5. Rotating part DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following further describes in detail the specific embodiments of the present invention with reference to the accompanying drawings. These embodiments are only used to illustrate the present invention and are not intended to limit the present invention.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, in the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0033] See Figure 1 and Figure 2 , the Morse taper shank end mill 1 includes a cutting edge portion 11 and a Morse taper shank 12 connected to each other. The inside of the tool holder 2 for clamping the Morse taper shank end mill 1 is axially through from end to end. A tapered hole 21 is provided at the head end inside the tool holder 2, and the tapered hole 21 has a taper that fits with the Morse taper shank 12. During installation, first insert the Morse taper shank 12 of the Morse taper shank end mill 1 into the tapered hole 21 at the head end of the tool holder 2, and then insert the locking screw 3 into the tool holder 2 from the tail end of the tool holder 2 and thread it with the tail end of the Morse taper shank 12. Tighten the locking screw 3 so that the end of the locking screw 3 presses tightly against the tool holder 2, that is, a locking screw 3 that is threadedly connected to the Morse taper shank end mill 1 is provided inside the tool holder 2. Through the pulling force of the locking screw 3 and the extrusion force and frictional force of the taper fit between the tapered hole 21 of the tool holder 2 and the Morse taper shank 12, the Morse taper shank end mill 1 and the tool holder 2 can be completely locked.

[0034] See Figures 3 to 5 , the embodiment of the present invention provides a disassembling tool for the Morse taper shank end mill 1. The disassembling tool in this embodiment is used for disassembling and separating the Morse taper shank end mill 1 and the tool holder 2.

[0035] See Figure 4 and Figure 5 , the disassembly tool of this embodiment includes a tool body 4, and the tool body 4 can be detachably connected to the tool shank 2. The tool body 4 is provided with a through hole 41 that penetrates axially from end to end. The through hole 41 allows a rotating member 5 to pass through rotatably, and the rotating member 5 is used to rotate the locking screw 3. A blocking surface 42 extends radially outward from the head end of the through hole 41. The blocking surface 42 is used to abut against the end face 31 of the locking screw 3. By blocking the end face 31 of the locking screw 3 with the blocking surface 42, the end of the locking screw 3 cannot enter the through hole 41. Since the through hole 41 penetrates the tool body 4, the blocking surface 42 constitutes at least a part of the head end face of the tool body 4. When the tool body 4 is connected to the tool shank 2, the blocking surface 42 faces the end face 31 of the locking screw 3 and has a spacing distance H, and this spacing distance H is smaller than the thread engagement length L between the locking screw 3 and the Morse taper shank 12 of the Morse taper shank end mill 1. Then, after connecting the tool body 4 to the tool shank 2, the rotating member 5 can be passed through the through hole 41 of the tool body 4, and then the rotating member 5 is used to rotate the locking screw 3 to make the locking screw 3 move towards the tool body 4. When the end face 31 of the locking screw 3 abuts against the blocking surface 42 at the head end of the tool body 4, the locking screw 3 stops moving. The moving distance of the locking screw 3 is the spacing distance H between the blocking surface 42 and the end face 31 of the locking screw 3. Since this distance H is smaller than the thread engagement length L between the locking screw 3 and the Morse taper shank 12 of the Morse taper shank end mill 1, at this time, the head end of the locking screw 3 has not completely disengaged from the Morse taper shank 12, and there is still part of it thread-engaged with the Morse taper shank 12. Continuing to use the rotating member 5 to rotate the locking screw 3, since the end face 31 of the locking screw 3 is blocked by the blocking surface 42 at the head end of the tool body 4 and cannot continue to move, a reaction force will be applied to the Morse taper shank 12 under the rotation of the rotating member 5. The Morse taper shank 12 disengages from the locking screw 3 under the reaction force of the locking screw 3 and exits the tool shank 2, thereby realizing the disassembly and separation of the Morse taper shank end mill 1 and the tool shank 2.

[0036] When using the disassembly tool of this embodiment, the disassembly and separation of the Morse taper shank end mill 1 and the tool shank 2 can be realized only by a twisting action. The operation is very simple, easy and safe. The operator does not need to use too much force and does not need to strike, which can effectively shorten the time required for disassembly and enable the operator to easily complete the disassembly process.

[0037] See Figure 5 , in this embodiment, preferably, when the tool body 4 is connected to the tool shank 2, the axis of the through hole 41 of the tool body 4 coincides with the axis of the locking screw 3, so as to facilitate the rotation of the rotating member 5 passing through the through hole 41 of the tool body 4 to rotate the locking screw 3.

[0038] See Figure 5, in this embodiment, preferably, the cross-sectional shape of the through hole 41 of the tool body 4 is circular, and the diameter of the circular through hole 41 is smaller than the diameter of the end face 31 of the locking screw 3, so that the end of the locking screw 3 cannot enter the through hole 41. The annular end face extending radially along the outer periphery of the head end of the circular through hole 41 constitutes a blocking surface 42 that abuts against the end face 31 of the locking screw 3. In order for the twisting member 5 to pass through the through hole 41 of the tool body 4 and rotate within the through hole 41, the diameter of the circular through hole 41 should be larger than the maximum diameter of the twisting member 5.

[0039] In this embodiment, preferably, the twisting member 5 is a hexagon wrench.

[0040] In this embodiment, preferably, the tool body 4 is threadedly connected to the tool handle 2, and the connection and fixation between the tool body 4 and the tool handle 2 are realized through threaded connection, which has the advantages of being very convenient for disassembly and assembly.

[0041] See Figure 5 , preferably, the tail end of the tool handle 2 has an assembly hole 22, and the assembly hole 22 is provided with internal threads. The assembly hole 22 is coaxially arranged with the tapered hole 21 at the head end of the tool handle 2, and moreover, the assembly hole 22 is communicated with the tapered hole 21 to form an internal space that penetrates through the tool handle 2 axially from head to tail. When installing the Morse taper shank end mill 1, the locking screw 3 can be inserted into the tool handle 2 from the assembly hole 22 at the tail end of the tool handle 2 and threadedly connected to the tail end of the Morse taper shank 12 that has been inserted into the tapered hole 21 at the head end of the tool handle 2, so as to realize the locking of the Morse taper shank end mill 1 and the tool handle 2. The outer peripheral surface of the tool body 4 is provided with external threads, and these external threads are used for mating connection with the internal threads of the assembly hole 22, thereby realizing the threaded connection between the tool body 4 and the tool handle 2.

[0042] Furthermore, a tail cap 43 extends radially along the outer peripheral surface of the tail end of the tool body 4, and the tail cap 43 is used for abutting against the tail end face of the tool handle 2. The tool body 4 is screwed into the assembly hole 22 at the tail end of the tool handle 2 through threaded cooperation until the tail cap 43 at the tail end of the tool body 4 abuts against the tail end face of the tool handle 2, that is, the connection and fixation between the tool body 4 and the tool handle 2 are completed.

[0043] Based on the above-mentioned Morse taper shank end mill 1 disassembly tool, the embodiment of the present invention also provides a method for disassembling the Morse taper shank end mill 1, and the method for disassembling the Morse taper shank end mill 1 in this embodiment is completed by using the above-mentioned Morse taper shank end mill 1 disassembly tool in this embodiment. The method for disassembling the Morse taper shank end mill 1 in this embodiment includes the following steps.

[0044] Step 1: Connect and fix the tool body 4 of the disassembly tool to the tool shank 2, with the head end of the tool body 4 facing the end of the locking screw 3 inside the tool shank 2. Specifically: Screw the tool body 4 into the assembly hole 22 at the tail end of the tool shank 2 through thread fitting until the tail cap 43 at the tail end of the tool body 4 abuts against the end face of the tail end of the tool shank 2, thus completing the connection and fixation of the tool body 4 and the tool shank 2. At this time, the blocking surface 42 at the head end of the tool body 4 faces the end face 31 of the end of the locking screw 3 with a spacing distance H, and this spacing distance H is less than the thread engagement length L between the locking screw 3 and the Morse taper shank 12 of the Morse taper shank end mill 1.

[0045] Step 2: Pass the rotating member 5 through the through hole 41 of the tool body 4, and then use the rotating member 5 to rotate the locking screw 3 to make the locking screw 3 move towards the tool body 4. When the end face 31 of the end of the locking screw 3 abuts against the blocking surface 42 at the head end of the tool body 4, the locking screw 3 stops moving. The moving distance of the locking screw 3 is the spacing distance H between the blocking surface 42 and the end face 31 of the end of the locking screw 3. Since this distance H is less than the thread engagement length L between the locking screw 3 and the Morse taper shank 12 of the Morse taper shank end mill 1, at this time, the head end of the locking screw 3 has not completely disengaged from the Morse taper shank 12 and there is still part of it thread-engaged with the Morse taper shank 12. Continue to use the rotating member 5 to rotate the locking screw 3. Since the end face 31 of the end of the locking screw 3 is blocked by the blocking surface 42 at the head end of the tool body 4 and cannot move further, a reaction force will be applied to the Morse taper shank 12 under the rotation of the rotating member 5. The Morse taper shank 12 will disengage from the locking screw 3 and withdraw from the tool shank 2 under the reaction force of the locking screw 3, thereby realizing the disassembly and separation of the Morse taper shank end mill 1 and the tool shank 2.

[0046] Using the disassembly method of this embodiment, only by turning can the disassembly and separation of the Morse taper shank end mill 1 and the tool shank 2 be realized. The operation is very simple, easy and safe. The operator does not need to use too much force and does not need to strike, which can effectively shorten the time required for disassembly and enable the operator to easily complete the disassembly process.

[0047] In the disassembly method of this embodiment, preferably, the rotating member 5 can be a hex key.

[0048] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can still be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A disassembly tool for a Morse taper shank end mill, used for disassembling and separating the Morse taper shank end mill (1) from the tool shank (2). A locking screw (3) that is threadedly connected to the Morse taper shank end mill (1) is provided inside the tool shank (2), characterized in that, The disassembly tool includes a tool body (4) detachably connected to the tool shank (2). The tool body (4) is provided with a through hole (41) axially penetrating from end to end. A rotating member (5) for screwing the locking screw (3) is rotatably passed through the through hole (41). The diameter of the through hole (41) is larger than the maximum diameter of the rotating member (5). A blocking surface (42) extending radially outward is provided at the head end of the through hole (41) for abutting against the end face (31) of the locking screw (3). When the tool body (4) is connected to the tool shank (2), the blocking surface (42) is opposite to the end face (31) of the locking screw (3) and has a spacing distance. The spacing distance is less than the thread engagement length between the locking screw (3) and the Morse taper shank end mill (1).

2. The disassembling tool for Morse taper shank end mills according to claim 1, characterized in that, When the tool body (4) is connected to the tool shank (2), the axis of the through hole (41) coincides with the axis of the locking screw (3).

3. The disassembly tool for Morse taper shank end mills according to claim 1, characterized in that, The tool body (4) is threadedly connected to the tool shank (2).

4. The disassembling tool for Morse taper shank end mills according to claim 3, characterized in that, The tail end of the tool shank (2) has an assembly hole provided with internal threads. External threads for mating connection with the internal threads of the assembly hole are provided on the outer peripheral surface of the tool body (4).

5. The disassembly tool for Morse taper shank end mills according to claim 4, characterized in that, A tail cap (43) extending radially is provided on the outer peripheral surface at the tail end of the tool body (4) for abutting against the tail end face of the tool shank (2).

6. The disassembling tool for Morse taper shank end mills according to claim 1, characterized in that, The cross-sectional shape of the through hole (41) is circular.

7. The disassembling tool for Morse taper shank end mills according to claim 1, characterized in that, The rotating member (5) is a hexagon wrench.

8. A disassembly method for a Morse taper shank end mill, characterized in that, For the disassembly tool of the Morse taper shank end mill according to any one of claims 1 to 7, the following steps are included: Step 1: Fix the tool body (4) of the disassembly tool to the tool shank (2). The head end of the tool body (4) faces the end of the locking screw (3) inside the tool shank (2). Step 2: Pass the rotating member (5) through the through hole (41) of the tool body (4), and then use the rotating member (5) to screw the locking screw (3) so that the locking screw (3) moves towards the tool body (4). When the end face (31) of the locking screw (3) abuts against the blocking surface (42) at the head end of the tool body (4), the locking screw (3) stops moving. Continue to use the rotating member (5) to screw the locking screw (3) so that the Morse taper shank end mill (1) exits the tool shank (2) under the reaction force of the locking screw (3).

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