Annular air inlet device

Abstract

The utility model discloses an annular air inlet device. By improving the design of the gas inlet pipe at the lower end of the gas inlet, the gas inlet pipe is designed into an annular gas inlet pipe, and a plurality of uniformly distributed small holes are formed in the inner wall, so that gas input from the gas inlet can uniformly sink and can be uniformly dispersed near a milling cutter, and the thickness of a coating film of the milling cutter is more uniform; after the gas is uniformly dispersed, the electric heating wire is heated by an electrode to reach a proper temperature to react with the gas, diamond is generated and coated on the surface of the milling cutter, and the gas slowly falls to the milling cutter by changing the gas flowing direction, so that the milling cutter is uniformly coated with a film.

Description

Technical Field

[0001] The utility model relates to the technical field of milling cutter coating, and particularly relates to an annular air inlet device. Background Art

[0002] A milling cutter is a rotating cutter with one or more cutting teeth used for milling. In the production and manufacturing process, the coating on the surface of the milling cutter plays a crucial role in the cutting performance and service life of the milling cutter, that is, the coating of the milling cutter. The diamond coating is a coating grown on the metal surface by introducing a certain amount of mixed gas of hydrogen and methane and using the heat generated by heating the hot wire to raise the temperature to produce a reaction. However, due to the unevenness of the gas flow in the prior art, the film thickness of the coating on the milling cutter tool is inconsistent, which increases the burden on the inspectors and reduces the production and manufacturing efficiency. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is that in the prior art, due to the unevenness of the gas flow, the film thickness of the coating on the milling cutter tool is inconsistent, which increases the burden on the inspectors and reduces the production and manufacturing efficiency. The utility model provides an annular air inlet device.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] The utility model provides an annular air inlet device. The annular air inlet device includes: a bottom plate, a bell jar, an air inlet, an air inlet pipe, and a milling cutter holder.

[0006] The milling cutter holder is arranged on the bottom plate and is used for placing the milling cutter.

[0007] The bell jar covers the bottom plate, and the air inlet is arranged at the top of the bell jar.

[0008] The air inlet pipe is arranged above the milling cutter holder, and the air inlet pipe is an annular air inlet pipe.

[0009] Preferably, a plurality of uniformly distributed small holes are arranged on the inner side wall of the annular air inlet pipe, and the small holes are used for discharging air.

[0010] Preferably, a plurality of electrode posts are further arranged on the bottom plate, the electrode posts are connected with a power controller, and the electrode posts are used for heating the heating wire.

[0011] Preferably, the electrode posts are arranged around the milling cutter holder, a support rod is erected on at least two adjacent electrode posts, and a plurality of the heating wires are arranged on the support rod.

[0012] Preferably, an air extraction port is further arranged on the bottom plate, and the air extraction port is arranged at the bottom of the bell jar and is used for evacuating the inside of the bell jar.

[0013] The positive and progressive effects of the present utility model are as follows: The present utility model provides an annular air intake device. By improving the design of the air inlet pipe at the lower end of the air inlet, the air inlet pipe is designed as an annular air inlet pipe, and a plurality of uniformly distributed small holes are opened on the inner wall, so that the gas input from the air inlet can sink evenly and can be evenly dispersed near the milling cutter, making the thickness of the coating on the milling cutter more uniform; after the gas is evenly dispersed, the electrode is used to heat the heating wire to reach a suitable temperature and react with the gas to generate diamond, which is coated on the surface of the milling cutter, and the gas flow direction is changed to slowly fall onto the milling cutter, so that the milling cutter is evenly coated. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the annular air intake device according to an embodiment of the present utility model.

[0015] Figure 2 It is a schematic plan view of the annular air intake device according to an embodiment of the present utility model.

[0016] Figure 3 It is a schematic structural diagram of the annular air inlet pipe according to an embodiment of the present utility model.

[0017] Figure 4 It is a schematic structural diagram of the heating wire according to an embodiment of the present utility model.

[0018] Figure 5 It is a schematic top view of the heating wire structure according to an embodiment of the present utility model.

[0019] Legend: 1, bottom plate; 2, bell jar; 3, air inlet; 4, air inlet pipe; 5, milling cutter holder; 6, milling cutter; 7, air extraction port; 9, small hole; 10, electrode post; 11, power controller; 12, heating wire; 13, support rod; 14, connecting pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present utility model will be further described below by way of embodiments, but the present utility model is not limited to the scope of the described embodiments.

[0021] Embodiment

[0022] As Figure 1-2 shown, this embodiment provides an annular air intake device. The annular air intake device includes: a bottom plate 1, a bell jar 2, an air inlet 3, an air inlet pipe 4, and a milling cutter holder 5. The milling cutter holder 5 is arranged on the bottom plate 1 and is used for placing the milling cutter 6; the bell jar 2 covers the bottom plate 1, and the air inlet 3 is arranged at the top of the bell jar 2; the air inlet pipe 4 is arranged above the milling cutter holder 5, and the air inlet pipe 4 is an annular air inlet pipe 4. In this embodiment, the milling cutter holder 5 is square, and the milling cutters 6 are neatly inserted on the milling cutter holder 5 in sequence.

[0023] As Figure 2As shown in the figure, in this embodiment, an air extraction port 7 is further provided on the bottom plate 1. The air extraction port 7 is arranged at the bottom of the bell jar 2 and is used to evacuate the inside of the bell jar 2. Specifically, the air extraction port 7 is arranged on the bottom plate 1 and is controlled by a switch. When the bell jar 2 is closed, the switch of the air extraction port 7 is turned on to evacuate the inside of the bell jar 2, so that the inside of the bell jar 2 remains in a vacuum state, and then the switch of the air extraction port 7 is closed. The corresponding gas is introduced through the air inlet 3. Here, the gas is a mixed gas of methane and hydrogen. The milling cutter 6 in this embodiment is coated with diamond. By introducing the mixed gas, a reaction can occur under a high-temperature environment and deposit and grow interactively on the surface of the milling cutter 6 to produce a diamond coating.

[0024] As Figure 3 shown in the figure, in this embodiment, a plurality of small holes 9 are evenly distributed on the inner side wall of the annular air inlet pipe 4. The small holes 9 are used for air outlet. Specifically, two connecting pipes 14 are provided on the annular air inlet pipe 4. The lower ends of the connecting pipes 14 are connected to the annular air inlet pipe 4, and the upper ends of the connecting pipes 14 are provided with air inlets 3. The upper ends of the two connecting pipes 14 pass through the top end of the bell jar 2. The gas is input through the air inlet 3 into the connecting pipes 14 and then into the annular air inlet pipe 4. The inner circle of the annular air inlet pipe 4 can cover the entire area of the lower milling cutter holder 5. The mixed gas is output through the evenly distributed small holes 9 on the inner side wall of the annular air inlet pipe 4, so that the mixed gas can sink evenly and be evenly dispersed near all the milling cutters 6 arranged on the milling cutter holder 5, thereby enabling uniform coating.

[0025] As Figure 4 and 5 shown in the figure, in this embodiment, a plurality of electrode columns 10 are further provided on the bottom plate 1. The electrode columns 10 are connected to the power controller 11 and are used to heat the heating wire 12. The electrode columns 10 are arranged around the milling cutter holder 5. At least two adjacent electrode columns 10 are provided with a support rod 13, and a plurality of heating wires 12 are arranged on the support rod 13. Specifically, the annular air inlet device in this embodiment includes four electrode columns 10, which are respectively arranged at the four corners of the milling cutter holder 5. The four electrode columns 10 are respectively connected to four corresponding power controllers 11, and the switch of the electrode column 10 can be controlled by controlling the power controller 11. The two ends of the support rod 13 are respectively connected to two electrode columns 6. As Figure 4 shown in the figure, in this embodiment, a set of symmetric support rods 13 is provided. The support rods 13 have good electrical conductivity and thermal conductivity. The heating wires 12 are arranged side by side and at intervals between a set of symmetric support rods 13 and there are several of them. The two ends of the heating wires 12 are respectively wound around the symmetric support rods 13. The heating wires 12 are heated by the electrode columns 10 to increase the power and reach an appropriate temperature, so as to react with the input mixed gas, so that diamond is grown and coated on the surface of the milling cutter 6.

[0026] This embodiment provides an annular air intake device. By improving the design of the intake pipe at the lower end of the air intake, the intake pipe is designed as an annular intake pipe, and a number of uniformly distributed small holes are provided on the inner wall, so that the gas input from the air intake can sink evenly and be evenly dispersed near the milling cutter, making the thickness of the coating on the milling cutter uniform; after the gas is evenly dispersed, the electrode is used to heat the heating wire to reach a suitable temperature to react with the gas, generating diamond to be coated on the surface of the milling cutter, and changing the gas flow direction to slowly fall towards the milling cutter, so that the milling cutter is evenly coated.

[0027] The working principle of the present utility model is as follows: close the bell jar 2, open the air extraction port 7, and discharge the air inside the bell jar 2 to make the inside of the bell jar 2 in a vacuum state; open the air intake port 3, introduce a mixed gas of methane and hydrogen, first introduce it into the connecting pipe 14 through the air intake port 3, and then enter the annular intake pipe 4 at the lower end; the mixed gas is dispersed through the small holes 9 on the inner side wall of the annular intake pipe 4, so that the mixed gas can sink evenly and be dispersed near the milling cutter. Turn on the power controller 11, control the electrode column 10 to heat the heating wire 12 to increase the power to reach a suitable temperature, so that the mixed gas reacts, and thus diamond is grown and coated on the surface of the milling cutter 6. This annular air intake device changes the flow direction of the mixed gas, and the mixed gas slowly and evenly falls near the milling cutter 6, so that the diamond coating on the surface of the milling cutter 6 grows at a uniform speed, thereby achieving the uniformity of the coating.

[0028] Although the specific embodiments of the present utility model have been described above, those skilled in the art should understand that this is only an example, and the protection scope of the present utility model is defined by the appended claims. Without departing from the principle and essence of the present utility model, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present utility model.

Claims

1. An annular intake device, characterized in that, The annular intake device includes: a bottom plate, a bell cover, an air inlet, an intake pipe, and a milling cutter holder. The milling cutter holder is arranged on the bottom plate and is used for placing a milling cutter. The bell cover covers the bottom plate, and the air inlet is arranged at the top end of the bell cover. The intake pipe is arranged above the milling cutter holder, and the intake pipe is an annular intake pipe.

2. The annular intake device according to claim 1, characterized in that, A plurality of uniformly distributed small holes are arranged on the inner side wall of the annular intake pipe, and the small holes are used for discharging air.

3. The annular intake device according to claim 1, characterized in that, A plurality of electrode columns are further arranged on the bottom plate. The electrode columns are connected to a power supply controller, and the electrode columns are used for heating an electric heating wire.

4. The annular intake device according to claim 3, wherein, The electrode columns are arranged around the milling cutter holder, and a support rod is erected on at least two adjacent electrode columns. A plurality of the electric heating wires are arranged on the support rod.

5. The annular intake device according to claim 1, characterized in that, An air extraction port is further arranged on the bottom plate. The air extraction port is arranged at the bottom of the bell cover and is used for evacuating the inside of the bell cover.

Images