A port self-cleaning machining center electric spindle

Abstract

This utility model discloses a self-cleaning machining center spindle, including a housing, a shaft, a drawbar, an annular valve body, a spindle drawbar interface, and an air passage. The housing houses a heavy-duty bearing coaxially connected to the shaft. The shaft is hollow and coaxially connected to the drawbar, which has a core hole coaxially extending through it. An air source hole is radially formed on the drawbar. A step is provided on the inner wall of the shaft, and an annular valve body is coaxially mounted on the step. The annular valve body has a valve hole radially formed, which is sealed to the air source hole. Through this method, this utility model provides a self-cleaning machining center spindle. Compressed air is introduced into the drawbar, and the airflow is controlled by the annular valve body. Cleaning is automatically completed during tool removal, solving the problem of incomplete cleaning caused by both subjective and objective factors, effectively improving spindle life and accuracy.

Description

Technical Field

[0001] This utility model relates to the field of electric spindles, and in particular to an electric spindle for a self-cleaning machining center. Background Technology

[0002] The electric spindle interface of a machining center has many dead angles, which can lead to the accumulation of sludge and impurities. This can damage the high-precision fit between the spindle and the end mill, interfere with the clamping mechanism, and accelerate wear, ultimately resulting in decreased machining accuracy, shortened equipment lifespan, and reduced production efficiency. Therefore, the industry typically requires cleaning the spindle interface and tool holder with specialized cleaning tools (such as high-pressure air guns or anhydrous alcohol) before tool replacement. While this step seems simple, it is susceptible to both subjective factors (such as improper operation or forgetting to clean) and objective factors (such as incomplete cleaning of dead angles), making thorough cleaning impossible. Utility Model Content

[0003] The main technical problem solved by this utility model is to provide a self-cleaning machining center electric spindle. Compressed air is introduced into the drawbar, and the airflow is controlled by an annular valve body. The cleaning process is automatically completed when the tool is removed. At the same time, it solves the problem of inadequate cleaning caused by subjective and objective factors, and effectively improves the spindle life and accuracy.

[0004] To solve the above-mentioned technical problems, the present invention provides a self-cleaning machining center electric spindle, comprising a housing, a shaft, a broach, an annular valve body, a spindle broach interface, and an air passage. The housing contains a heavy-duty bearing coaxially connected to the shaft. The shaft is hollow and coaxially connected to the broach. The broach has a core hole coaxially through it, and an air source hole is radially formed on the broach. A step is provided on the inner wall of the shaft, and an annular valve body is coaxially mounted on the step. The annular valve body has a valve hole radially connected to the air source hole. The valve hole is sealed to the air source hole. A spindle broach interface is installed at the front end of the broach and positioned at the front end of the shaft. An air passage is formed around the spindle broach interface on the shaft. One end of the air passage connects to the valve hole, and the other end of the air passage is obliquely aligned with the spindle broach interface.

[0005] In a preferred embodiment of this utility model, a sealing ring is embedded on the outer circumferential surface of the pull rod, and a sealing ring is also provided on the outer circumferential surface of the annular valve body. The sealing rings seal the shaft, the annular valve body, and the pull rod together.

[0006] In a preferred embodiment of this utility model, when the pull rod is in the tensioned state, the air source hole and the valve hole are misaligned and disconnected; when the pull rod is in the loosened state, the air source hole and the valve hole are connected.

[0007] In a preferred embodiment of the present invention, a positioning mounting groove is provided at the front end of the shaft, the spindle broach interface is located in the positioning mounting groove, a dead angle is formed between the positioning mounting groove and the spindle broach interface, and the other end of the air passage is connected to the dead angle.

[0008] In a preferred embodiment of the present invention, an exhaust groove is provided around the outer circumference of the annular valve body, and the valve hole is located in the exhaust groove.

[0009] In a preferred embodiment of the present invention, a front cover surrounding the shaft is installed at the front end of the outer shell, an outer waterproof ring is provided on the inner wall of the front cover and the outer shell, and an inner waterproof ring is provided on the outer wall of the shaft, and the outer waterproof ring and the inner waterproof ring are seamlessly joined.

[0010] In a preferred embodiment of this utility model, the spindle broach interface is installed at the front end of the broach rod, and the rear end of the broach rod is connected to a compressed air source.

[0011] The beneficial effects of this utility model are: The self-cleaning machining center spindle provided by this utility model introduces compressed air into the drawbar and uses an annular valve to control the opening and closing of the airflow. It automatically completes the cleaning process when the tool is removed, and solves the problem of inadequate cleaning caused by subjective and objective factors, effectively improving the spindle life and accuracy. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0013] Figure 1 This is a main structural diagram of a preferred embodiment of the self-cleaning machining center electric spindle of this utility model;

[0014] Figure 2 This is a structural diagram of the exhaust groove of a preferred embodiment of the self-cleaning machining center electric spindle of this utility model. Detailed Implementation

[0015] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] like Figure 1-2 As shown, the embodiments of this utility model include:

[0017] A self-cleaning machining center electric spindle includes a housing 1, a spindle body 2, a broach 3, an annular valve body 4, a spindle broach interface 5, and an air passage 6. The housing 1 houses a heavy-duty bearing and coaxially connects to the spindle body 2. The spindle body 2 is hollow and coaxially connects to the broach 3. The broach 3 has a core hole 7 coaxially extending through it. The broach 3 has an air source hole 8 radially extending through it. The inner wall of the spindle body 2 has a step 9. The annular valve body 4 is coaxially mounted on the step 9. The annular valve body 4 has a valve hole 10 radially extending through it. The valve hole 10 is sealed to the air source hole 8. The broach 3 has a spindle broach interface 5 located at the front end of the spindle body 2. The spindle body 2 has an air passage 6 around the spindle broach interface 5. One end of the air passage 6 is connected to the valve hole 10, and the other end 13 of the air passage 6 is obliquely aligned with the spindle broach interface 5.

[0018] The outer circumferential surface of the pull rod 3 is inlaid with a sealing ring, and the outer circumferential surface of the annular valve body 4 is also provided with a sealing ring. The sealing rings seal the shaft 2, the annular valve body 4, and the pull rod 3 together.

[0019] Furthermore, when the pull rod 3 is in the tensioned state, the air source hole 8 and the valve hole 10 are misaligned and disconnected; when the pull rod 3 is in the loosened state, the air source hole 8 and the valve hole 10 are connected.

[0020] Furthermore, the front end of the shaft 2 is provided with a positioning mounting groove 11, the spindle broach interface 5 is located in the positioning mounting groove 11, and a dead angle 12 is formed between the positioning mounting groove 11 and the spindle broach interface 5, and the other end 13 of the air passage 6 is connected to the dead angle 12.

[0021] Furthermore, an exhaust groove 14 is provided around the outer circumference of the annular valve body 4, and the valve hole 10 is located in the exhaust groove 14.

[0022] Furthermore, a front cover 20 surrounding the shaft 2 is installed at the front end of the outer casing 1. An outer waterproof ring 21 is provided on the inner wall of the front cover 20 and the outer casing 1, and an inner waterproof ring 22 is provided on the outer wall of the shaft 2. The outer waterproof ring 21 and the inner waterproof ring 22 are seamlessly joined.

[0023] Furthermore, the spindle broach interface 5 is installed at the front end of the broach rod 3, and the rear end of the broach rod 3 is connected to a compressed air source.

[0024] When switching milling cutters, this product will operate the baffle rod 3 to extend and release the spindle baffle interface 5. At the moment the spindle baffle interface 5 is released, the air source port 8 and the valve port 10 are connected. Compressed air from the core port 7 rushes out from the air source port 8, is released through the valve port 10, and is injected into the air passage 6. Then it is ejected from the other end 13 of the air passage 6. The ejected compressed air acts on the dead corner 12 around the spindle baffle interface 5, actively blowing out the accumulated contaminants.

[0025] Since the self-cleaning process is passively triggered by the disassembly of the milling cutter, it does not require manual active control, saving cleaning time and eliminating cleaning problems caused by subjective factors.

[0026] Since the other end 13 of the airway 6 is located in the dead corner 12, it can thoroughly clean areas that cannot be reached manually, thereby completely avoiding cleaning problems caused by objective factors.

[0027] In summary, this utility model provides a self-cleaning machining center spindle. Compressed air is introduced into the drawbar 3, and the airflow is controlled by the annular valve body 4. The cleaning process is automatically completed during tool removal, which solves the problem of inadequate cleaning caused by subjective and objective factors, and effectively improves the spindle life and accuracy.

[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A port-self-cleaning machining center electric spindle, characterized in that, The device includes a housing, a shaft, a drawbar, an annular valve body, a spindle drawbar interface, and an air passage. The housing contains a heavy-duty bearing and the shaft is coaxially connected to it. The shaft is hollow and the drawbar is coaxially connected to it. The drawbar has a core hole coaxially through it and an air source hole radially. The inner wall of the shaft has a step, and an annular valve body is coaxially mounted on the step. The annular valve body has a valve hole radially connected to the air source hole. The valve hole is sealed to the air source hole. A spindle drawbar interface is installed at the front end of the drawbar and located at the front end of the shaft. An air passage is formed around the spindle drawbar interface on the shaft. One end of the air passage connects to the valve hole, and the other end is obliquely aligned with the spindle drawbar interface.

2. The port-self-cleaning machining center electric spindle according to claim 1, characterized in that, A sealing ring is embedded on the outer circumferential surface of the drawbar, and a sealing ring is also provided on the outer circumferential surface of the annular valve body. The sealing rings seal the shaft, the annular valve body, and the drawbar against each other.

3. The port-self-cleaning machining center electric spindle according to claim 1, characterized in that, When the pull rod is in the tensioned state, the air source hole and the valve hole are misaligned and disconnected; when the pull rod is in the loosened state, the air source hole and the valve hole are connected.

4. The port-self-cleaning machining center electric spindle according to claim 1, characterized in that, The front end of the shaft is provided with a positioning mounting groove, the spindle broach interface is located in the positioning mounting groove, a dead angle is formed between the positioning mounting groove and the spindle broach interface, and the other end of the air passage is connected to the dead angle.

5. The port-self-cleaning machining center electric spindle according to claim 1, characterized in that, The outer circumferential surface of the annular valve body is provided with an exhaust groove, and the valve hole is located in the exhaust groove.

6. The port-self-cleaning machining center electric spindle according to claim 1, characterized in that, The front end of the housing is fitted with a front cover that surrounds the shaft. The front cover and the inner wall of the housing are provided with an outer waterproof ring, and the outer wall of the shaft is provided with an inner waterproof ring. The outer waterproof ring and the inner waterproof ring are seamlessly joined.

7. The port-self-cleaning machining center electric spindle according to claim 1, characterized in that, The spindle broach interface is installed at the front end of the broach rod, and the rear end of the broach rod is connected to a compressed air source.

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