Split type combined milling cutter

Abstract

The utility model relates to the technical field of machining tools, in particular to a split type combined milling cutter which comprises a cutter head body and a cutter handle body, a plurality of connecting plates are arranged on the outer ring face of the contact position of the cutter head body and the cutter handle body, and the two ends of each connecting plate are connected with the cutter head body and the cutter handle body through screws respectively. A containing groove is formed in the outer ring face of the end, close to the tool bit body, of the tool handle body and internally provided with a traction wire. Due to the fact that the traction wire and the hook are arranged in the containing groove of the cutter handle body, when the milling cutter falls accidentally, after the milling cutter falls downwards by a small distance, the cutter handle body can be hung along with tightening of the traction wire, and therefore the milling cutter is suspended in the air. The phenomenon that the milling cutter is damaged due to the fact that the milling cutter directly falls to the surface of a workpiece or the surface of a workbench when falling accidentally is avoided, meanwhile, in the process, the containing groove can be blocked by the end of the sealing barrel, and the situation that normal operation of the milling cutter is affected due to the fact that the traction wire and the hook are automatically disengaged from the interior of the containing groove is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of machining tools, in particular to a split combined milling cutter. Background Art

[0002] A milling cutter is a rotary tool used for milling machining and having one or more cutting teeth. During operation, each cutting tooth intermittently cuts off the surplus of the workpiece in turn. Since the cutting head needs to be replaced according to the situation during milling, a split combined milling cutter structure is required to meet the current market demand. The existing Chinese patent with the application number 202320800553.X discloses a split combined milling cutter structure, which includes a tool shank and also includes a connecting mechanism and a sleeve. The connecting mechanism is installed on the rod wall of the tool shank. The connecting mechanism is composed of a cutting head, a connecting bolt, a threaded sleeve, a threaded groove and a limiting disc. The limiting disc for limiting the cutting head is welded on the rod wall of the tool shank. The tool shank penetrates through the cutting head. The threaded sleeve is threadedly connected to the rod wall of the tool shank. The threaded sleeve is located in the cutter groove of the cutting head. The outer wall of the cutting head is fixedly connected to the rod wall of the tool shank through the connecting bolt.

[0003] When the above technology is used, although it has a certain effect of splitting and combining the cutting head and the tool shank to a certain extent, since it does not set corresponding anti-falling components, during actual use, due to factors such as fatigue or slippery hands of personnel, there is a risk that the milling cutter directly slides onto the workbench when changing the tool. When the milling cutter drops, it is not only easy to cause injury to itself but also easy to cause injury to the surface of the processed workpiece below, resulting in unnecessary losses. Therefore, in order to solve the above technical problems, we propose a split combined milling cutter. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose a split combined milling cutter.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A split combined milling cutter includes a cutting head main body and a tool shank main body. A plurality of connecting plates are arranged on the outer ring surface at the contact position between the cutting head main body and the tool shank main body. The two ends of the connecting plate are respectively connected to the cutting head main body and the tool shank main body through screws. A receiving groove is arranged on the outer ring surface of the tool shank main body near the cutting head main body. A traction wire is installed in the receiving groove. A hook is installed at one end of the traction wire away from the receiving groove. A seal cylinder that can move up and down is arranged on the outer ring surface of the tool shank main body. The seal cylinder covers the outside of the receiving groove. A top spring is arranged between one end of the seal cylinder and the tool shank main body.

[0007] Preferably, a clamping groove is arranged at one end of the seal cylinder, and one end of the top spring abuts against the clamping groove.

[0008] Preferably, a rotating ring is arranged inside the receiving groove, and one end of the traction wire away from the hook is connected to the rotating ring.

[0009] Preferably, a socket is arranged at the upper end of the cutter head body, and a corresponding plug-in part is arranged at the lower end of the cutter handle body corresponding to the socket.

[0010] Preferably, a plurality of strip-shaped limiting protrusions are arranged on the inner wall of the socket of the cutter head body, and corresponding limiting grooves are arranged on the outer side of the plug-in part of the cutter handle body corresponding to the limiting protrusions.

[0011] Preferably, corresponding placement grooves are arranged on the outer ring surfaces of the cutter head body and the cutter handle body for the connecting plate, and corresponding counterbore grooves are arranged on the connecting plate for the screws.

[0012] Preferably, communication holes are arranged inside both the cutter handle body and the cutter head body, and the ends of the communication holes penetrate to the outside of the cutter head body and the cutter handle body.

[0013] A split combined milling cutter proposed by the present utility model has the beneficial effects as follows:

[0014] 1: In the present utility model, since a traction wire and a hook are arranged in the receiving groove of the cutter handle body, when a person installs and uninstalls the milling cutter, the traction wire can be first pulled out from the receiving groove and connected to a firm component on the upper side of the external machine tool through the hook. Then the person can hold the milling cutter and install it. During this process, when the milling cutter accidentally drops, after the milling cutter drops a small distance downward, as the traction wire tightens, the cutter handle body can be hung, so that the milling cutter is suspended in the air, that is, it avoids the phenomenon that the milling cutter will directly drop onto the surface of the workpiece or the workbench surface and be damaged when it accidentally drops. At the same time, in the above process, since a sealing cylinder is arranged on the outer ring surface of the cutter handle body, that is, when a person takes in and pulls out the traction wire, first move the sealing cylinder, so that the end of the sealing cylinder gradually exposes the receiving groove and compresses the top spring. At this time, the traction wire can be put into or taken out of the receiving groove. Finally, by applying force to the sealing cylinder, the end of the sealing cylinder can block the receiving groove to prevent the traction wire and the hook from automatically disengaging from the receiving groove and affecting the normal operation of the milling cutter.

[0015] 2: In the present utility model, the provision of the card slot can accommodate and limit one end of the top spring, so that the top spring can push the sealing cylinder relatively stably; the provision of the rotating ring enables the traction wire to be rotatably connected to the tool handle body, thus facilitating the pulling out and storage of the traction wire; the provision of the socket and the plugging part further improves the connection stability between the tool head body and the tool handle body; the provision of the limiting protrusion further improves the connection stability between the tool head body and the tool handle body; the provision of the placement groove and the counterbore groove prevents the connecting plate and the end of the screw from protruding directly outside the tool handle body, thus avoiding the phenomenon of scratching the external workpiece; the provision of the communication hole facilitates the cooling, temperature reduction and lubrication of the milling cutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a schematic diagram of the storage of the traction wire of a split combined milling cutter proposed by the present utility model;

[0017] Figure 2 FIG. is a schematic diagram of the release of the traction wire of a split combined milling cutter proposed by the present utility model;

[0018] Figure 3 FIG. is a schematic structural diagram of a split combined milling cutter proposed by the present utility model;

[0019] Figure 4 FIG. is a schematic diagram of the splitting of the tool head body and the tool handle body of a split combined milling cutter proposed by the present utility model;

[0020] Figure 5 FIG. is a schematic diagram of the splitting of the tool head body and the connecting plate of a split combined milling cutter proposed by the present utility model.

[0021] In the figure: 1. Tool head body; 2. Tool handle body; 3. Connecting plate; 4. Screw; 5. Traction wire; 6. Hook; 7. Sealing cylinder; 8. Top spring; 9. Rotating ring; 10. Communication hole; 11. Limiting protrusion; 12. Placement groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0023] Embodiment 1

[0024] Refer to Figures 1-5, a split combined milling cutter, comprising a cutter head body 1 and a cutter handle body 2. A plurality of connecting plates 3 are provided on the outer ring surface at the contact part between the cutter head body 1 and the cutter handle body 2. Both ends of the connecting plate 3 are respectively connected to the cutter head body 1 and the cutter handle body 2 through screws 4. An accommodation groove is provided on the outer ring surface of the cutter handle body 2 near one end of the cutter head body 1. A traction wire 5 is installed in the accommodation groove. A hook 6 is installed at one end of the traction wire 5 away from the accommodation groove. A seal cylinder 7 that can move up and down is provided on the outer ring surface of the cutter handle body 2. The seal cylinder 7 covers the outside of the accommodation groove. A top spring 8 is provided between one end of the seal cylinder 7 and the cutter handle body 2.

[0025] Embodiment 2

[0026] Referring to Figures 1-5 , in the case that other parts are the same as those in Embodiment 1, the difference between this embodiment and Embodiment 1 lies in:

[0027] A clamping groove is provided at one end of the seal cylinder 7. One end of the top spring 8 abuts against the clamping groove. The setting of the clamping groove can accommodate and limit one end of the top spring 8, so that the top spring 8 can push the seal cylinder 7 more stably; A rotating ring 9 is provided inside the accommodation groove. One end of the traction wire 5 away from the hook 6 is connected to the rotating ring 9. The setting of the rotating ring 9 makes the connection between the traction wire 5 and the cutter handle body 2 a rotating connection, so as to facilitate the pulling out and storage of the traction wire 5; An insertion port is provided at the upper end of the cutter head body 1. A matching insertion part is provided at the lower end of the cutter handle body 2 corresponding to the insertion port. The settings of the insertion port and the insertion part further improve the connection stability between the cutter head body 1 and the cutter handle body 2.

[0028] A plurality of strip-shaped limiting protrusions 11 are provided on the inner wall of the insertion port of the cutter head body 2. Corresponding limiting grooves are provided on the outside of the insertion part of the cutter handle body 2 corresponding to the limiting protrusions 11. The setting of the limiting protrusions 11 further improves the connection stability between the cutter head body 1 and the cutter handle body 2; Placement grooves 12 are provided on the outer ring surfaces of the cutter head body 1 and the cutter handle body 2 corresponding to the connecting plates 3. Counterbore grooves are provided on the connecting plates 3 corresponding to the screws 4. The settings of the placement grooves 12 and the counterbore grooves make the ends of the connecting plates 3 and the screws 4 not directly protrude outside the cutter handle body 2, thus avoiding the phenomenon of scratching the external workpiece; Communication holes 10 are provided inside both the cutter handle body 2 and the cutter head body 1. The ends of the communication holes 10 penetrate to the outside of the cutter head body 1 and the cutter handle body 2. The setting of the communication holes 10 facilitates the cooling, temperature reduction and lubrication of the milling cutter.

[0029] Principle of use and advantages: During the use of the present utility model, the tool shank body 2 and the tool head body 1 are connected by screws 4 and a connecting plate 3, so that the entire milling cutter can be divided into two modules. Thus, when the milling cutter is damaged, it can be replaced correspondingly at the damaged part. At the same time, during the above process, since a traction wire 5 and a hook 6 are provided in the receiving groove of the tool shank body 2, when loading and unloading the milling cutter, the operator can first pull out the traction wire 5 from the receiving groove and connect it to a firm component on the upper side of the external machine tool through the hook 6. Then the operator can hold the milling cutter and install it. During this process, when the milling cutter accidentally drops, after the milling cutter drops a small distance downward, as the traction wire 5 tightens, the tool shank body 2 can be hung, so that the milling cutter floats in the air, that is, it avoids the phenomenon that the milling cutter will directly drop onto the workpiece surface or the workbench surface and be damaged when it accidentally drops.

[0030] At the same time, during the above process, since a sealing cylinder 7 is provided on the outer ring surface of the tool shank body 2, that is, when the operator takes in and pulls out the traction wire 5, first move the sealing cylinder 7, so that the end of the sealing cylinder 7 gradually exposes the receiving groove and compresses the top spring 8. At this time, the traction wire 5 can be put into or released from the receiving groove. Finally, after the force applied to the sealing cylinder 7 is removed, the end of the sealing cylinder 7 can block the receiving groove, so as to prevent the traction wire 5 and the hook 6 from automatically detaching from the receiving groove and affecting the normal operation of the milling cutter.

[0031] It should be further noted that the setting of the card slot can accommodate and limit one end of the top spring 8, so that the top spring 8 can push the sealing cylinder 7 relatively stably; the setting of the rotating ring 9 makes the connection between the traction wire 5 and the tool shank body 2 a rotating connection, so as to facilitate the pulling out and receiving of the traction wire 5; the setting of the socket and the plugging part further improves the connection stability between the tool head body 1 and the tool shank body 2; the setting of the limiting protrusion 11 further improves the connection stability between the tool head body 1 and the tool shank body 2; the setting of the placement groove 12 and the counterbore groove makes the ends of the connecting plate 3 and the screw 4 not directly protrude outside the tool shank body 2, thus avoiding the phenomenon of scratching the external workpiece; the setting of the communication hole 10 facilitates the cooling, temperature reduction and lubrication of the milling cutter.

[0032] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A split type combined milling cutter, comprising a cutter head body (1) and a cutter handle body (2), characterized in that: The outer annular surface of the contact portion between the cutter head body (1) and the handle body (2) is provided with a plurality of connecting plates (3), and the two ends of the connecting plates (3) are respectively connected to the cutter head body (1) and the handle body (2) by means of screws (4). The outer annular surface of the handle body (2) at one end close to the cutter head body (1) is provided with a receiving groove, in which a traction wire (5) is installed, and at the end of the traction wire (5) away from the receiving groove, a hook (6) is installed. The outer annular surface of the handle body (2) is provided with a sealing cylinder (7) that can move up and down, and the sealing cylinder (7) cover is arranged outside the receiving groove, and a top spring (8) is provided between one end of the sealing cylinder (7) and the handle body (2).

2. A split type combined milling cutter according to claim 1, characterized in that: One end of the sealing cylinder (7) is provided with a slot, and one end of the top spring (8) abuts against the slot.

3. The split type combined milling cutter according to claim 1, characterized in that: A rotating ring (9) is provided inside the receiving groove, and one end of the traction wire (5) away from the hook (6) is connected to the rotating ring (9).

4. The split type combined milling cutter according to claim 1, characterized in that: The upper end of the blade head body (1) is provided with a socket, and the lower end of the blade handle body (2) is provided with a matching plug-in portion corresponding to the socket.

5. A split type combined milling cutter according to claim 4, characterized in that: The inner wall of the insert opening of the blade head body (1) is provided with a plurality of strip-shaped limiting protrusions (11), and the outer side of the inserting portion of the blade handle body (2) is provided with matching limiting grooves corresponding to the limiting protrusions (11).

6. The split type combined milling cutter according to claim 1, characterized in that: The outer ring surfaces of the tool head body (1) and the tool handle body (2) are provided with matching placement grooves (12) corresponding to the connecting plate (3), and the connecting plate (3) is provided with matching countersunk grooves corresponding to the screws (4).

7. The split type combined milling cutter according to claim 1, characterized in that: The handle body (2) and the cutter head body (1) are both provided with a connecting hole (10) inside, and the end of the connecting hole (10) penetrates to the outside of the cutter head body (1) and the handle body (2).

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