Milling head structure of numerical control machine tool

Abstract

The utility model discloses a numerical control machine tool milling head structure which comprises a shell and is characterized in that a window is formed in the side face of the shell, a sleeve is installed in the shell in a sleeved mode, a main air channel is formed in the sleeve, and a second air channel is formed in the position, close to the bottom, of the side face of the main air channel. A first pneumatic motor is arranged at the other end of the second air channel, a first cutter handle is arranged on one side of the first pneumatic motor, a first pressing cap is rotatably installed on one side of the first cutter handle, an air pipe is arranged at the top of the shell, an air pipe connector is arranged at the other end of the air pipe, and the other end of the air pipe connector is externally connected with an air source. According to the milling head structure of the numerical control machine tool, cutters of different specifications are installed on the two cutter handles, airflow enters the pneumatic motor through the air pipe along the main air channel, the motor rotates to drive the cutter handles to rotate to machine products, when the cutters need to be replaced, the main shaft moves to avoid workpieces and rotates by 180 degrees to complete cutter replacement, and the cutter head does not need to be dismounted after shutdown.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, in particular to a milling head structure of a numerical control machine tool. Background Art

[0002] A milling head refers to one of the machine tool accessories installed on a CNC machine tool and connected to the spindle, used to drive the milling cutter to rotate. It is an important component of machine tool accessories. It greatly enhances the processing capacity of the original machine tool, enabling it to perform some very complex operations, or the original time-consuming and labor-intensive processing technology can be greatly simplified because of the milling head, and the accuracy of the processed elements can be relatively easily guaranteed. Many CNC machine tool milling heads are mentioned in the prior art, for example: CN216325430U, a universal angle milling head for boring and milling CNC machine tools, including a main body, one side of the main body is fixedly connected to a fixed block, the top of the fixed block is fixedly connected to a limiting column, the top of the main body is movably connected to a handle, and one side of the handle is provided with a slot.

[0003] There are other existing technologies:

[0004] CN216607386U, a universal angle milling head for boring and milling CNC machine tools;

[0005] CN213380225U, an angular milling head for boring and milling numerically controlled machine tools.

[0006] Although the milling head for CNC machine tools mentioned in the above-mentioned prior art can realize side angle processing, the corresponding milling head can only hold one tool. When the tool needs to be replaced, the entire milling head can only be removed and the tool replaced and then installed again, which is very troublesome. A milling head spindle can be added to the milling head to realize the simultaneous use of multiple tools. Utility Model Content

[0007] The utility model aims to provide a milling head structure of a CNC machine tool to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a CNC machine tool milling head structure, including a shell, characterized in that: an inner cavity is opened at the center of the shell, a window is opened on the side of the shell, a rotating seat is fixedly connected to the bottom of the inner cavity at one-fifth of the upper position, a threaded hole is opened at the center of the rotating seat, a sleeve is sleeved and installed inside the shell, a thread is opened at the top of the sleeve surface at one-quarter of the lower position, a main airway is opened inside the sleeve, a second airway is arranged near the bottom of the side of the main airway, a first pneumatic motor is arranged at the other end of the second airway, a first tool handle is arranged on one side of the first tool handle, a first pressure cap is rotatably installed on one side of the first tool handle, a second pneumatic motor is fixedly arranged at the bottom of the main airway, a second tool handle is arranged on the side of the second pneumatic motor, a second pressure cap is rotatably installed on the side of the second tool handle, an air pipe is arranged on the top of the shell, an air pipe joint is arranged at the other end of the air pipe, the inside of the air pipe is connected to the main airway, and the other end of the air pipe joint is connected to an external air source.

[0009] Preferably, knives of different specifications are installed in the two tool handles, and the first pressing cap and the second pressing cap are oriented in opposite directions.

[0010] Preferably, a hole is formed on the side of the sleeve near the top, and a fixing screw is installed in the hole.

[0011] Preferably, a cone handle is fixedly connected to the top of the shell.

[0012] Preferably, the air pipe is made of a soft plastic tube.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The milling head structure of the CNC machine tool has a taper handle installed on the spindle of the CNC machine tool. Tools of different specifications are installed on the two tool handles. The external air source provides airflow through the air pipe to enter the milling head, and enters the first pneumatic motor along the main airway. The motor rotates to drive the tool handle to rotate and process the product. When the tool needs to be changed, the spindle moves to avoid the workpiece and rotates 180° to complete the tool change. There is no need to stop the machine to disassemble the milling head. It is suitable for side milling work that requires tool change, which can save processing time and improve work efficiency.

[0015] 2. The milling head structure of the CNC machine tool can perform mechanical milling cutting in the side position, which solves the problem that traditional machine tools can only feed up and down, and the taper shank specifications are the same as the taper shanks of commonly used tools for CNC machine tools, so that the milling head can be installed on most CNC machine tool spindles, and the taper shank shell can be detached from the inside of the milling head to install taper shanks of other models and specifications, so that the milling head structure can be used on various machine tools, greatly increasing the scope of use of the milling head structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal sleeve of the utility model structure;

[0018] Figure 3 It is a cross-sectional view of the structure of the utility model.

[0019] In the figure: 1. outer shell; 2. taper handle; 3. window; 4. rotating seat; 5. sleeve; 6. thread; 7. fixing screw; 8. main airway; 9. second airway; 10. first pneumatic motor; 11. first tool handle; 12. first pressure cap; 13. second pneumatic motor; 14. second tool handle; 15. second pressure cap; 16. air pipe; 17. air pipe joint. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example: See Figure 1 The utility model provides a technical solution: a milling head structure of a CNC machine tool.

[0022] Among them, an inner cavity is opened at the center of the shell 1, a window 3 is opened on the side of the shell 1, a rotating seat 4 is fixedly connected to the upper one-fifth of the bottom of the inner cavity, a threaded hole is opened in the center of the rotating seat 4, a sleeve 5 is sleeved and installed inside the shell 1, a thread is opened at the lower one-quarter of the top of the surface of the sleeve 5, a main air channel 8 is opened inside the sleeve 5, a second air channel 9 is arranged on the side of the main air channel 8 near the bottom, a first pneumatic motor 10 is arranged on the other end of the second air channel 9, a first tool handle 11 is arranged on one side of the first pneumatic motor 10, a first pressure cap 12 is rotatably installed on one side of the first tool handle 11, a second pneumatic motor 13 is fixedly arranged at the bottom of the main air channel 8, a second tool handle 14 is arranged on the side of the second pneumatic motor 13, and a second pressure cap 15 is rotatably installed on the side of the second tool handle 14, an air pipe 16 is arranged on the top of the shell 1, and an air pipe joint 17 is arranged on the other end of the air pipe 16, the inside of the air pipe 16 is connected to the main air channel 8, and the other end of the air pipe joint 17 is connected to an external air source.

[0023] In this embodiment, the first pressure cap 12 and the second pressure cap 15 are rotated to remove, the tools are installed in the corresponding first tool handle 11 and the second tool handle 14, the pressure caps are screwed on and pressed tightly, the air pipe 16 and the air pipe joint 17 are first installed on the top of the sleeve 5, and the air pipe 16 and the air pipe joint 17 are inserted into the inner cavity of the shell 1 from the bottom of the shell until the external thread on the sleeve 5 and the internal thread of the inner cavity of the shell 1 contact, the sleeve 5 is rotated to make the two threads engage to fix the sleeve 5, the air pipe joint 17 is pulled out of the window 3, and the air pipe of the external air source is connected. The air is pumped inward by an external air source such as an air compressor, and the air flow passes through the main air channel 8 and the second air channel 9, and the corresponding pneumatic motor is started to rotate the tool handle, thereby realizing lateral processing.

[0024] Among them, knives of different specifications are installed in the two tool handles, and the first pressing cap 12 and the second pressing cap 15 are in opposite directions.

[0025] In this embodiment, the conventional side milling head is only installed with one tool. When the tool needs to be replaced, in most cases the entire side milling head needs to be removed to replace the tool, which is very inconvenient. By setting two tool handles, tools of different specifications can be installed. When the tool needs to be replaced, because the angles of the two spindles are 180°, the tool can be replaced by simply rotating the spindle 180°.

[0026] A hole is formed on the side of the sleeve 5 near the top, and a fixing screw 7 is installed in the hole.

[0027] In this embodiment, a circle of tracheal grooves is opened near the outside of the top of the main airway 8, and the diameter of the groove is the same as the diameter of the tracheal 16. The tracheal 16 is inserted into the tracheal groove, and screw holes are evenly opened around the tracheal groove. The fixing screws 7 in the holes are tightened, and the fixing screws 7 are pressed against the tracheal 16, thereby fixing the tracheal 16 so that the tracheal 16 will not fall off under the impact of airflow.

[0028] Wherein, a cone handle 2 is fixedly connected to the top of the shell 1.

[0029] In this embodiment, the taper shank 2 is a taper shank 2 commonly used for CNC machine tool tools, so that the entire milling head structure can be installed on the CNC machine tool like an ordinary tool, and the taper shank 2 and the outer shell 1 can be separated from the sleeve 5 to replace other taper shanks 2, which is sufficient to cope with CNC machine tools of various specifications.

[0030] The air pipe 16 is made of soft plastic tube.

[0031] In this embodiment, after the air pipe 16 extends into the inner cavity of the shell 1, it needs to turn and extend out of the window 3 to connect with the external air source. This requires that the material of the air pipe 16 is relatively soft to avoid bending to form creases and cause damage to the air pipe.

[0032] Working principle: Install the tool in advance, install the air pipe 16 and the air pipe connector 17 on the top of the sleeve 5, fix the air pipe 16 with the fixing screw 7, insert the air pipe 16 and the air pipe connector 17 from the bottom of the shell into the inner cavity of the shell 1 until the external thread on the sleeve 5 contacts the internal thread of the inner cavity of the shell 1, rotate the sleeve 5 to make the two threads engage to fix the sleeve 5, pull the air pipe connector 17 out of the window 3, connect the air pipe of the external air source, and finally install the taper handle 2 on the spindle of the CNC machine tool. Use an external air source such as an air compressor to pump air inward, the air flow passes through the main air channel 8 and the second air channel 9, and start the corresponding pneumatic motor to rotate the tool handle for processing. If you need to replace the tool, you only need to rotate the spindle 180° and then start the corresponding motor.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A milling head structure for a numerically controlled machine tool, comprising a housing (1), characterized in that: An inner cavity is provided at the center of the shell (1), a window (3) is provided on the side of the shell (1), a rotating seat (4) is fixedly connected to the bottom of the inner cavity at one-fifth of the way up, a threaded hole is provided at the center of the rotating seat (4), a sleeve (5) is sleeved and installed inside the shell (1), a thread is provided on the surface of the sleeve (5) at one-quarter of the way down from the top, a main air passage (8) is provided inside the sleeve (5), a second air passage (9) is provided on the side of the main air passage (8) near the bottom, a first pneumatic motor (10) is provided at the other end of the second air passage (9), and the first pneumatic motor (10) is provided. 0) is provided with a first knife handle (11) on one side, a first pressure cap (12) is rotatably mounted on one side of the first knife handle (11), a second pneumatic motor (13) is fixedly mounted at the bottom of the main airway (8), a second knife handle (14) is provided on the side of the second pneumatic motor (13), a second pressure cap (15) is rotatably mounted on the side of the second knife handle (14), an air pipe (16) is provided on the top of the housing (1), an air pipe joint (17) is provided at the other end of the air pipe (16), the interior of the air pipe (16) is connected to the main airway (8), and the other end of the air pipe joint (17) is connected to an external air source.

2. A CNC machine tool milling head structure according to claim 1, characterized in that: Cutting tools of different specifications are installed in the two tool handles, and the first pressing cap (12) and the second pressing cap (15) are oriented in opposite directions.

3. The milling head structure of a CNC machine tool according to claim 1, characterized in that: A hole is provided on the side of the sleeve (5) near the top, and a fixing screw (7) is installed in the hole.

4. The milling head structure of a CNC machine tool according to claim 1, characterized in that: A cone handle (2) is fixedly connected to the top of the shell (1).

5. The milling head structure of a CNC machine tool according to claim 1, characterized in that: The air pipe (16) is made of a soft plastic tube.

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