Milling device

Abstract

The milling device comprises a milling main shaft, a tool bit is arranged at one end of the milling main shaft, and a motor is arranged at the end, away from the tool bit, of the milling main shaft; the outer side of the milling main shaft is sleeved with a protection arm, and the two ends of the protection arm are in sealed connection with the milling main shaft through connecting assemblies; a hollow pull rod is arranged between the two connecting assemblies, and the two ends of the hollow pull rod are connected with the two connecting assemblies respectively. The connecting assembly comprises an upper connecting piece and a lower connecting piece, a plurality of air inlet holes are formed in the upper connecting piece, a quick connector is arranged at each air inlet hole, an air inlet of each quick connector is connected with the air pipe, an air outlet of each quick connector is connected with the hollow pull rod, and a plurality of sprayers are arranged on the lower connecting piece; the nozzle is connected with one end of the hollow pull rod away from the quick connector. The air flow is arranged to prevent cuttings from influencing the milling main shaft.

Description

Technical Field

[0001] The present application relates to a milling device, belonging to the field of model milling machine equipment. Background Art

[0002] Existing model milling equipment will generate a large amount of dust and chips during the processing. These dust and chips can easily enter the milling spindle or adhere to the surface of the milling spindle, thereby causing the motor to stall. In some occasions with explosion-proof requirements, it may also cause an explosion.

[0003] A Chinese patent with publication number CN206153590U mentions a milling spindle structure, which adds a sleeve and an end bearing seat to the original transmission shaft so that the components can be assembled into a set. However, this structure cannot ensure that the chips of the workpiece will not fly into the milling spindle and cause a stall during milling. Therefore, a new protective device to prevent chips from entering the milling spindle has become a problem that technicians in this field need to solve urgently. Utility Model Content

[0004] According to one aspect of the present application, a milling device is provided, and the method prevents chips from affecting a milling spindle by setting an air flow.

[0005] The utility model provides a milling device, comprising a milling spindle, a cutter head is arranged at one end of the milling spindle, and a motor is arranged at one end of the milling spindle away from the cutter head;

[0006] The outer side of the milling spindle is provided with a protective arm, and both ends of the protective arm are sealed and connected to the milling spindle through a connecting assembly;

[0007] A hollow pull rod is provided between the two connecting components, and two ends of the hollow pull rod are respectively connected to the two connecting components;

[0008] The connecting assembly includes an upper connecting piece and a lower connecting piece. The upper connecting piece is provided with a plurality of air inlet holes. A quick-connect connector is provided at each of the air inlet holes. The air inlet of the quick-connect connector is connected to the air pipe, and the air outlet of the quick-connect connector is connected to the hollow pull rod. The lower connecting piece is provided with a plurality of nozzles, and the nozzles are connected to one end of the hollow pull rod away from the quick-connect connector.

[0009] Optionally, the air pipe is connected to an external air pump, and the high-pressure gas of the air pump passes through the air pipe, the hollow pull rod, and the nozzle in sequence to blow the chips to a side away from the milling spindle.

[0010] Optionally, the upper connecting member and the lower connecting member are both hollow plate-like structures, the milling spindle passes through the hollow plate-like structure, and the two ends of the protective arm are respectively sealed and connected to the upper connecting member and the lower connecting member.

[0011] Optionally, four hollow pull rods are provided, all of which are located on the peripheral side of the milling spindle and inside the protective arm, and both ends of the hollow pull rods are respectively connected to the four corners of the connecting assembly.

[0012] The beneficial effects of this application include:

[0013] 1) The air pipe provided in the present application is connected to the quick-connect connector, and the air is connected to the hollow pull rod through the quick-connect connector, and the air is introduced into the nozzle through the hollow pull rod and sprayed out, so that the sprayed gas forms an air flow protection layer near the cutter head, so that the milling chips will not affect the operation of the cutter head and the protective arm, ensuring that the cutter head is clean and has an explosion-proof function.

[0014] 2) The protective arm provided in the present application allows the milling spindle to pass through the protective arm, and a hollow pull rod is installed inside the protective arm. The protective arm and the milling spindle are then sealed and connected through the upper connecting piece and the lower connecting piece, so that the quick-connect connector installed on the upper connecting piece can introduce air into the hollow pull rod, and then spray it out through the nozzle connected to the lower connecting piece, so that the chips near the cutter head will not be blocked near the milling spindle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the protection arm structure;

[0016] Figure 2 This is a schematic diagram of the milling spindle structure;

[0017] Figure 3 for Figure 2 Schematic diagram of the structure of the local part a in;

[0018] Figure 4 for Figure 2 Schematic diagram of the structure of the local part b in;

[0019] List of parts and reference numerals: 1. Milling spindle; 2. Protective arm; 3. Cutter head; 4. Upper connecting piece; 5. Lower connecting piece; 6. Quick connector; 7. Hollow pull rod; 8. Nozzle; 9. Motor. DETAILED DESCRIPTION

[0020] The present application is described in detail below with reference to embodiments, but the present application is not limited to these embodiments.

[0021] Please refer to Figures 1 to 4 As shown, the utility model provides a milling device, including a milling spindle 1, a cutter head 3 is arranged at one end of the milling spindle 1, and a motor 9 is arranged at the end of the milling spindle 1 away from the cutter head 3; it is characterized in that a protective arm 2 is sleeved on the outer side of the milling spindle 1, and both ends of the protective arm 2 are sealed and connected to the milling spindle 1 through a connecting assembly;

[0022] A hollow pull rod 7 is provided between the two connecting components, and both ends of the hollow pull rod 7 are respectively connected to the two connecting components;

[0023] Four hollow pull rods 7 are provided, all of which are located on the peripheral side of the milling spindle 1 and inside the protection arm 2. Both ends of the hollow pull rods 7 are respectively connected to the four corners of the connecting assembly.

[0024] The connecting assembly includes an upper connecting member 4 and a lower connecting member 5. The upper connecting member 4 is provided with a plurality of air inlet holes, each of which is provided with a quick-connect connector 6. The air inlet of the quick-connect connector 6 is connected to the air pipe, and the air outlet of the quick-connect connector 6 is connected to the hollow pull rod 7. The lower connecting member 5 is provided with a plurality of nozzles 8, and the nozzles 8 are connected to one end of the hollow pull rod 7 away from the quick-connect connector 6.

[0025] The upper connecting member 4 and the lower connecting member 5 are both hollow plate-like structures, the milling spindle 1 passes through the hollow plate-like structure, and the two ends of the protection arm 2 are sealed and connected to the upper connecting member 4 and the lower connecting member 5 respectively.

[0026] It is worth noting that the upper connecting member 4 connects the milling spindle 1 and one end of the protection arm 2, that is, the top end of the protection arm 2 is connected to the end of the milling spindle 1 close to the motor; the lower connecting member 5 connects the milling spindle 1 and the other end of the protection arm 2, that is, the bottom end of the protection arm 2 is connected to the end of the milling spindle 1 close to the cutter head;

[0027] The air pipe is connected to an external air pump, and the high-pressure gas of the air pump passes through the air pipe, the hollow pull rod 7, and the nozzle 8 in sequence to blow the chips to the side away from the milling spindle 1.

[0028] The air pipe is connected to the quick-connect connector 6, and air is allowed to enter the hollow pull rod 7 through the air pump and then sprayed out through the nozzle 8. In this embodiment, the gas sprayed by the nozzle 8 removes the chips formed by the rotating cutter head 3 through air flow, and forms an air wall near the cutter head 3, so that the chips will not affect the operation of the cutter head 3 and the milling spindle 1.

[0029] The above are only a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A milling device, comprising a milling spindle (1), wherein a cutter head (3) is arranged at one end of the milling spindle (1), and a motor (9) is arranged at the end of the milling spindle (1) away from the cutter head (3); characterized in that: The outer side of the milling spindle (1) is provided with a protective arm (2), and both ends of the protective arm (2) are sealedly connected to the milling spindle (1) via a connecting assembly; A hollow pull rod (7) is provided between the two connecting components, and two ends of the hollow pull rod (7) are respectively connected to the two connecting components; The connecting assembly comprises an upper connecting member (4) and a lower connecting member (5), the upper connecting member (4) being provided with a plurality of air inlet holes, each of the air inlet holes being provided with a quick-connect connector (6), the air inlet of the quick-connect connector (6) being connected to the air pipe, the air outlet of the quick-connect connector (6) being connected to the hollow pull rod (7), the lower connecting member (5) being provided with a plurality of nozzles (8), the nozzles (8) being connected to one end of the hollow pull rod (7) away from the quick-connect connector (6).

2. A milling device according to claim 1, characterized in that: The air pipe is connected to an external air pump, and the high-pressure gas of the air pump passes through the air pipe, the hollow pull rod (7), and the nozzle (8) in sequence to blow the chips to a side away from the milling spindle (1).

3. A milling device according to claim 1, characterized in that: The upper connecting piece (4) and the lower connecting piece (5) are both hollow plate-like structures, the milling spindle (1) passes through the hollow plate-like structure, and the two ends of the protection arm (2) are sealedly connected to the upper connecting piece (4) and the lower connecting piece (5) respectively.

4. A milling device according to claim 3, characterized in that: Four hollow pull rods (7) are provided, all of which are located on the peripheral side of the milling spindle (1) and inside the protection arm (2). The two ends of the hollow pull rods (7) are respectively connected to the four corners of the connecting assembly.

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