Machine tool power head with milling cutter convenient to replace

Abstract

The utility model discloses a machine tool power head with a milling cutter convenient to replace, which relates to the technical field of machine tool power heads and comprises a cutter holder, a motor is fixedly connected to the upper end of the cutter holder, a fixing ring is fixedly connected to the side wall of the lower end of the cutter holder, a cutter head is rotatably arranged on the fixing ring, and the cutter head is connected with the motor in a matched mode. A milling cutter is inserted into the cutter head, a bearing is fixedly connected to the outer side ring of the fixing ring, a positioning ring is fixedly connected to the side face, located on the outer ring of the bearing, of the cutter holder, and a connecting ring is fixed to the outer ring of the bearing. The utility model discloses a machine tool power head convenient for replacing milling cutters. The positioning mechanism and the positioning hole formed in the tool bit are arranged, the positioning mechanism and the positioning ring are positioned and fixed, then the positioning rod is inserted into the positioning hole, rotation of the tool bit can be limited through positioning, then the tool bit can be prevented from rotating when the milling cutter is disassembled, disassembly is convenient, and the practicability is high. And damage to an internal transmission mechanism due to forced rotation of the tool bit can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool power heads, in particular to a machine tool power head convenient for replacing milling cutters. Background Technique

[0002] The machine tool power head is used to transmit driving force. The milling cutter is inserted into the power tool head and rotates with the high-speed rotation of the tool head to achieve the processing effect. However, at present, the milling cutter is fixed by inserting and screwing tightly. When replacing the milling cutter, it is difficult to rotate the fixing knob of the milling cutter because the insertion is too tight. Currently, it is loosened by hammering the connection part and then rotated. This will not only damage the power head, but also cause the tool head to rotate when the milling cutter is disassembled, thereby damaging the internal transmission mechanism. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a machine tool power head convenient for replacing milling cutters, and solves the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model is realized through the following technical solutions: A machine tool power head convenient for replacing milling cutters includes a tool holder. The upper end of the tool holder is fixedly connected with a motor. The lower end side wall of the tool holder is fixedly connected with a fixing ring. A tool head is rotatably arranged on the fixing ring. The tool head is matched and connected with the motor. A milling cutter is inserted into the tool head. The outer ring of the fixing ring is fixedly connected with a bearing. A positioning ring is fixedly connected to the side surface of the tool holder located on the outer ring of the bearing. The outer ring of the bearing is fixed with an adapter ring. The outer side wall of the adapter ring is fixedly connected with a positioning mechanism. The positioning mechanism is arranged between the bearing and the positioning ring and rotates with the bearing. The positioning mechanism can be fixedly arranged on the positioning ring. A positioning hole is opened on the side wall of the tool head. The positioning mechanism is matched and corresponding to the positioning hole.

[0005] Further, the positioning mechanism includes: a slider fixedly connected with the outer ring of the adapter ring. The other end of the slider is fixedly connected with a clamping block. The clamping block is C-shaped and is clamped on the positioning ring. The outer end of the clamping block is threadedly connected with a fixing knob. The fixing knob passes through the clamping block and abuts against the positioning ring. A positioning plate is fixed on the side wall of the clamping block. A nut is fixedly connected to the lower end of the positioning plate. A positioning rod threadedly connected with the nut is arranged on the positioning plate. The positioning rod is matched with the positioning hole.

[0006] Further, a spring is fixedly connected in the positioning hole. The upper end of the spring is fixedly connected with a sealing plate. The sealing plate is slidably connected with the inner wall of the positioning hole.

[0007] Further, the upper end of the positioning rod is fixedly connected with a turning knob, and the fixing knob is T-shaped.

[0008] Further, the upper end surface of the sealing plate is arc-shaped, and the end surface of the sealing plate is flush with the arc surface of the cutter head.

[0009] Further, the fixing knobs are symmetrically arranged and are arranged on both sides of the clamping block.

[0010] Compared with the above background art, a machine tool power head for facilitating the replacement of a milling cutter provided by the present application includes a machine tool power head that is very mature in technology today, as well as a positioning mechanism and a positioning hole as the core components. Its principle relies on the positioning mechanism to rotate with the bearing according to the position of the positioning hole on the cutter head, then be fixed on the positioning ring, and then the positioning rod is inserted into the positioning hole to limit the rotation of the cutter head, facilitating the disassembly of the cutter head and extending the service life of the power head.

[0011] The utility model provides a machine tool power head for facilitating the replacement of a milling cutter. Compared with the prior art, it has the following beneficial effects:

[0012] For the machine tool power head for facilitating the replacement of a milling cutter; by setting a positioning mechanism and a positioning hole opened on the cutter head, the positioning mechanism is positioned and fixed with the positioning ring, and then the positioning rod is inserted into the positioning hole. Through positioning, the rotation of the cutter head can be restricted, so that when disassembling the milling cutter, the cutter head can be prevented from rotating. This is not only convenient for disassembly, but also can prevent the cutter head from being forced to rotate and damaging the internal transmission mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the whole of the utility model;

[0014] Figure 2 is a schematic structural diagram of the tool holder, the motor and the cutter head of the utility model;

[0015] Figure 3 is a schematic structural diagram of the cross-section of the fixing ring and the cutter head of the utility model;

[0016] Figure 4 is Figure 2 an enlarged structural diagram of part A in

[0017] Figure 5 is Figure 3 an enlarged structural diagram of part B in

[0018] In the figure: 1, tool holder; 2, motor; 3, fixing ring; 4, cutter head; 5, bearing; 6, connecting ring; 7, slider; 8, positioning ring; 9, clamping block; 10, fixing knob; 11, positioning plate; 12, nut; 13, positioning rod; 14, turning knob; 15, positioning hole; 16, spring; 17, sealing plate. Detailed implementation mode

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-5 , the present invention provides a technical solution: a machine tool power head convenient for replacing a milling cutter, including a tool holder 1, a motor 2 is fixedly connected to the upper end of the tool holder 1, a fixing ring 3 is fixedly connected to the side wall of the lower end of the tool holder 1, a tool head 4 is rotatably arranged on the fixing ring 3, the tool head 4 is connected and arranged in a matching manner with the motor 2, a milling cutter is inserted into the tool head 4, a bearing 5 is fixedly connected to the outer ring of the fixing ring 3, a positioning ring 8 is fixedly connected to the side surface of the tool holder 1 located on the outer ring of the bearing 5, an adapter ring 6 is fixed to the outer ring of the bearing 5, a positioning mechanism is fixedly connected to the outer side wall of the adapter ring 6, the positioning mechanism is arranged between the bearing 5 and the positioning ring 8 and rotates with the bearing 5, the positioning mechanism can be fixedly arranged on the positioning ring 8, a positioning hole 15 is formed in the side wall of the tool head 4, and the positioning mechanism is arranged in a matching and corresponding manner with the positioning hole 15; the tool head 4 rotates driven by the motor 2, which is known in the prior art. When machining a milling part, the milling cutter is inserted into the through hole of the tool head 4 and then fixed tightly by a threaded cover. When the milling cutter needs to be replaced, since it is fixed very tightly and will become even tighter under high-speed rotation, the position corresponding to the positioning mechanism and the positioning hole 15 in this design can be used when replacing the milling cutter. Specifically, first determine the position of the positioning hole 15 according to the rotation position of the tool head 4, then rotate the bearing 5 and the adapter ring 6 to make the positioning mechanism correspond to the position of the positioning hole 15, then fix itself on the positioning ring 8, and then complete the restriction of the rotation of the tool head 4 through the corresponding insertion of the positioning mechanism and the positioning hole 15. This not only facilitates the disassembly of the milling cutter, but also can avoid rotating the internal transmission mechanism during disassembly and avoid damaging the internal transmission mechanism.

[0021] Such as Figure 5As shown in the figure, the positioning mechanism includes: a slider 7, which is fixedly connected to the outer ring of the connecting ring 6. The other end of the slider 7 is fixedly connected with a clamping block 9. The clamping block 9 is arranged in a C shape and is clamped on the positioning ring 8. A fixing button 10 is threadedly connected to the outer side end of the clamping block 9. The fixing button 10 passes through the clamping block 9 and abuts against the positioning ring 8; a positioning plate 11, which is fixed to the side wall of the clamping block 9. A nut 12 is fixedly connected to the lower end of the positioning plate 11. A positioning rod 13 that is threadedly connected to the nut 12 is inserted through the positioning plate 11. The positioning rod 13 is matched with the positioning hole 15; the slider 7 is fixed on the outer side wall of the connecting ring 6 and rotates with the rotation of the connecting ring 6. Then, the clamping block 9 at the end of the slider 7 slides and is limited on the positioning ring 8. Then, the position of the clamping block 9 is fixed on the positioning ring 8 by rotating the fixing button 10, and then the position of the positioning plate 11 is fixed. After the position of the positioning plate 11 is fixed, the positioning rod 13 can be rotated. The positioning rod 13 is threadedly connected to the nut 12 at the lower end of the positioning plate 11. Then, the positioning rod 13 is inserted into the positioning hole 15, and then the position of the tool head 4 is fixed.

[0022] As Figure 5 shown in the figure, a spring 16 is fixedly connected inside the positioning hole 15. The upper end of the spring 16 is fixedly connected with a sealing plate 17. The sealing plate 17 is slidably connected to the inner wall of the positioning hole 15. When the positioning rod 13 moves away from the positioning hole 15, the spring 16 pops out laterally and bounces up the sealing plate 17 to prevent debris from entering the positioning hole 15.

[0023] As Figure 4 and Figure 5 shown in the figure, a rotating button 14 is fixedly connected to the upper end of the positioning rod 13. The fixing button 10 is arranged in a T shape. The rotating button 14 at the upper end of the positioning rod 13 can facilitate the operator to rotate the positioning rod 13, and the fixing button 10 is also arranged with a T-shaped end, which is also for more convenient rotation operation.

[0024] As Figure 5 shown in the figure, the upper end face of the sealing plate 17 is arranged in an arc shape, and the end face of the sealing plate 17 is flush with the arc surface of the tool head 4; the outer arc end face of the sealing plate 17 is flush with the arc end face of the tool head 4, which further improves the sealing performance.

[0025] As Figure 4 shown in the figure, the fixing buttons 10 are symmetrically arranged and are located on both sides of the clamping block 9; the fixing buttons 10 are threadedly connected at the two outermost positions of the clamping block 9. The symmetrical fixation by the fixing buttons 10 can be more stable.

[0026] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can, without departing from the scope of the technical solution of the present utility model, make some changes or modifications using the technical content disclosed above to form equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A machine tool power head facilitating cutter replacement, comprising a tool holder (1), an upper end of the tool holder (1) is fixedly connected with a motor (2), a side wall of a lower end of the tool holder (1) is fixedly connected with a fixing ring (3), a cutter head (4) is rotatably arranged on the fixing ring (3), the cutter head (4) is in matching connection with the motor (2), and a milling cutter is inserted into the cutter head (4), characterized in that, The outer ring of the fixed ring (3) is fixedly connected with a bearing (5). A positioning ring (8) is fixedly connected to the side surface of the tool holder (1) located on the outer ring of the bearing (5). The outer ring of the bearing (5) is fixed with an adapter ring (6). A positioning mechanism is fixedly connected to the outer side wall of the adapter ring (6). The positioning mechanism is arranged between the bearing (5) and the positioning ring (8) and is arranged to rotate with the bearing (5). The positioning mechanism can be fixedly arranged on the positioning ring (8). A positioning hole (15) is formed in the side wall of the tool bit (4), and the positioning mechanism is arranged in matching correspondence with the positioning hole (15).

2. The power head of a machine tool facilitating the replacement of a milling cutter according to claim 1, wherein The positioning mechanism includes: A slider (7), the slider (7) is fixedly connected to the outer ring of the adapter ring (6). The other end of the slider (7) is fixedly connected with a clamping block (9). The clamping block (9) is arranged in a C shape and is clamped on the positioning ring (8). A fixing button (10) is threadedly connected to the outer side end of the clamping block (9). The fixing button (10) passes through the clamping block (9) and abuts against the positioning ring (8). A positioning plate (11), the positioning plate (11) is fixed to the side wall of the clamping block (9). A nut (12) is fixedly connected to the lower end of the positioning plate (11). A positioning rod (13) threadedly connected to the nut (12) is passed through the positioning plate (11). The positioning rod (13) is arranged in matching with the positioning hole (15).

3. The machine tool power head for facilitating the replacement of milling cutters according to claim 2, wherein, A spring (16) is fixedly connected in the positioning hole (15). The upper end of the spring (16) is fixedly connected with a sealing plate (17). The sealing plate (17) is slidably connected to the inner wall of the positioning hole (15).

4. The machine tool power head for facilitating the replacement of milling cutters according to claim 2, wherein The upper end of the positioning rod (13) is fixedly connected with a turning knob (14). The fixing button (10) is arranged in a T shape.

5. The machine tool power head for facilitating the replacement of a milling cutter according to claim 3, wherein, The upper end surface of the sealing plate (17) is arranged in an arc shape, and the end surface of the sealing plate (17) is flush with the arc surface of the tool bit (4).

6. The machine tool power head for facilitating the replacement of a milling cutter according to claim 2, characterized in that, The fixing buttons (10) are symmetrically arranged and are arranged on both sides of the clamping block (9).

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