A vibrating and rotating sand-feeding device for selectable areas and a sand-feeding method thereof

Abstract

The present invention discloses a vibrating and rotating sanding device for selecting a zone and a sanding method thereof, comprising: a rotating sanding mechanism, comprising a bracket, a motor, a first zone selection piece, a second zone selection piece, and a material receiving hopper, the bracket is provided with a sanding cavity, the material receiving hopper is arranged on the bracket and connected to the sanding cavity; the motor is installed on the bracket, and is used to drive the milling head base to rotate; the first zone selection piece is provided with a first drop-out port corresponding to the edge area of ​​the end face of the milling head base, the second zone selection piece is provided with a second drop-out port corresponding to the middle area of ​​the end face of the milling head base, and one of the first zone selection piece and the second zone selection piece is detachably arranged on the bracket; a vibration mechanism, comprising a high-frequency vibrator and a material receiving hopper thereon, and the discharge port of the material receiving hopper is matched directly above the material receiving hopper. The present invention realizes uniform sanding, and separately sands the edge area and the middle area of ​​the end face of the milling head base, so that the edge area of ​​the end face of the milling head base that is more easily worn can use higher-quality abrasives, thereby enhancing the wear resistance of the edge area.

Description

Technical Field

[0001] The invention relates to a sand loading device, in particular to a vibrating and rotating sand loading device for a selectable zone and a sand loading method thereof. Background Art

[0002] The precision machining of ceramic parts mainly adopts diamond milling. This machining method combines grinding suitable for hard and brittle materials with CNC milling suitable for complex structure machining, and can complete the machining of complex surfaces. Due to the high hardness, brittleness and high wear resistance of ceramic materials, diamond milling heads wear quickly and have a short service life. Currently, the most widely used are electroplated diamond milling heads. By observing the morphology, it is found that there are two problems with electroplated diamond milling heads when milling ceramic materials: (1) The abrasive grains of the diamond milling head are easy to fall off. The main reason is that the binder has insufficient holding force on the diamond; (2) The diamond abrasive grains in the edge area of ​​the end face of the diamond milling head are often worn out particularly severely, while the diamond abrasive grains in the middle area have no obvious wear. The main reason is that the linear speed is different, and the working conditions of the edge area and the middle area of ​​the end face of the milling head are different.

[0003] Brazing process is a relatively new preparation process for diamond milling heads. Diamond milling heads prepared by brazing process have strong holding force and high abrasive grains. Compared with electroplated and sintered diamond tools, they are more wear-resistant and have good application prospects. At present, brazed diamond is mainly prepared by mixing, which has the problem of uneven distribution of abrasive grains. The abrasive grains are easily blocked during processing, resulting in abrasive grains falling off. By sanding the substrate coated with brazing material by vibration dispersion diamond, a brazed diamond milling head with a relatively uniform distribution of abrasive grains can be obtained. However, the particle distribution of vibration sanding is similar to normal distribution, which is easy to cause particle aggregation and cannot solve the problem of uneven distribution of abrasive grains. In addition, the current sanding equipment cannot solve the problem that the edge area of ​​the end face of the milling head is more susceptible to wear. For this reason, a new sanding equipment is needed to solve the problem of uneven distribution of abrasive grains and enhance the wear resistance of the edge area of ​​the end face of the milling head to extend the service life of the diamond milling head. Summary of the invention

[0004] The purpose of the present invention is to provide a vibrating and rotating sand-loading device for a selectable zone and a sand-loading method thereof in view of the technical problems existing in the prior art.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a vibrating and rotating sand-loading device for selectable areas, comprising a rotating sand-loading mechanism and a vibration mechanism, the rotating sand-loading mechanism comprising a bracket, a motor, a first selection area plate, a second selection area plate, and a material receiving hopper, the bracket is provided with a sand-loading cavity, the material receiving hopper is arranged on the bracket and connected to the upper sand cavity; the motor is installed on the bracket, and is used to drive the milling head base located in the upper sand cavity to rotate around its axis; the first selection area plate is provided with a first drop-out port corresponding to the edge area of ​​the end face of the milling head base, and the second selection area plate is provided with a second drop-out port corresponding to the middle area of ​​the end face of the milling head base, one of the first selection area plate and the second selection area plate is detachably arranged on the bracket and located between the upper sand cavity and the material receiving hopper; the vibration mechanism comprises a high-frequency vibrator and an upper hopper arranged on the high-frequency vibrator, and the discharge port of the upper hopper is matched directly above the material receiving hopper.

[0006] Furthermore, a screen is provided at the bottom of the receiving hopper for the abrasive particles to pass through.

[0007] Furthermore, the first blanking opening is a first blanking slit arranged along the radial direction of the end surface of the milling head base, and the second blanking opening is a blanking hole located on the central axis of the end surface of the milling head base.

[0008] Furthermore, the rotating sanding mechanism also includes a base, the bracket is arranged on the base and can be switched to a vertical state or a horizontal state, and in the vertical state, the end face of the milling head base is sanded, and in the horizontal state, the side face of the milling head base is sanded; the material receiving hopper has two installation positions on the bracket that are adapted to its vertical state and horizontal state one by one; the rotating sanding mechanism also includes a third selection piece, the third selection piece is provided with a third material drop port corresponding to the side face of the milling head base, and when the bracket is in a horizontal state, the third selection piece is installed on the bracket and is located between the sanding cavity and the material receiving hopper.

[0009] Furthermore, the third blanking opening is a second blanking slit parallel to the axis of the milling head base.

[0010] Furthermore, the base includes a pedestal and two vertical guide slot plates arranged on the pedestal and opposite to each other, the bracket is pivoted between the two guide slot plates, and the bracket is switched to a vertical state or a horizontal state by rotation, and in the horizontal state, it is lifted by a magnetic pad.

[0011] Furthermore, the bracket includes two left and right vertical support plates, and an upper partition plate, a middle partition plate, a lower partition plate, and a side plate arranged between the two support plates. The upper sand chamber is surrounded by the upper partition plate, the middle partition plate, the side plate and the two support plates. The motor is installed on the lower partition plate, and the output shaft of the motor faces upward and is connected to the milling head base through a drill chuck; when the bracket is in a vertical state, the material receiving hopper, the first selection plate or the second selection plate is arranged at the mounting hole set in the upper partition plate, and when the bracket is in a horizontal state, the material receiving hopper and the third selection plate are arranged at the mounting hole set in the side plate.

[0012] Furthermore, the vibration mechanism also includes a support seat, on which the high-frequency vibrator is adjustably and horizontally arranged; and also includes a shock-absorbing platform, on which the support seat and the base are arranged.

[0013] The present invention further provides a sanding method of a vibrating and rotating sanding device for an optional area, comprising a first sanding process for sanding an edge area of ​​an end surface of a milling head base body, and a second sanding process for sanding a middle area of ​​an end surface of the milling head base body, wherein the first sanding process comprises the following steps:

[0014] A1) placing the first selection area sheet on a bracket;

[0015] A2) pouring a certain amount of first abrasive particles into an upper hopper and starting a high-frequency vibrator;

[0016] A3) Start the motor;

[0017] A4) After sanding is completed, turn off the high-frequency vibrator and motor.

[0018] The second sanding process includes the following steps:

[0019] B1) placing the second selection area sheet on the bracket;

[0020] B2) pouring a certain amount of second abrasive grains whose grade is lower than that of the first abrasive grains into the upper hopper, and starting the high-frequency vibrator;

[0021] B3) Start the motor;

[0022] B4) After sanding is completed, turn off the high-frequency vibrator and motor.

[0023] The present invention further provides a sanding method for a vibrating and rotating sanding device with an optional area, comprising a first sanding process for sanding the edge area of ​​the end surface of the milling head base body, a second sanding process for sanding the middle area of ​​the end surface of the milling head base body, and a third sanding process for sanding the side surface of the milling head base body; the first sanding process comprises the following steps:

[0024] A1) When the support is in a vertical position, the first selection area sheet is arranged on the support, and the receiving hopper is located at a corresponding installation position;

[0025] A2) pouring a certain amount of first abrasive particles into an upper hopper and starting a high-frequency vibrator;

[0026] A3) Start the motor;

[0027] A4) After sanding is completed, turn off the high-frequency vibrator and motor.

[0028] The second sanding process includes the following steps:

[0029] B1) When the support is in a vertical position, the second selection area sheet is arranged on the support, and the receiving hopper is located at a corresponding installation position;

[0030] B2) pouring a certain amount of second abrasive grains whose grade is lower than that of the first abrasive grains into the upper hopper, and starting the high-frequency vibrator;

[0031] B3) Start the motor;

[0032] B4) After sanding is completed, turn off the high-frequency vibrator and motor;

[0033] The third sanding process includes the following steps:

[0034] C1) When the support is in a horizontal position, the third selection area sheet is arranged on the support, and the receiving hopper is located at a corresponding installation position;

[0035] C2) pouring a certain amount of third abrasive grains into the upper hopper and starting the high-frequency vibrator; the grade of the third abrasive grains is the same as or different from the grade of the first abrasive grains and the second abrasive grains;

[0036] C3) Start the motor;

[0037] C4) After sanding is completed, turn off the high-frequency vibrator and motor.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. The present invention adopts a high-frequency vibrator to disperse diamonds, and combines the rotation method to uniformly sand the milling head base to avoid abrasive aggregation; the present invention uses the first selection plate and the second selection plate to control the sanding area, so as to achieve separate sanding of the edge area and the middle area of ​​the end face of the milling head base, so that the edge area of ​​the end face of the milling head base that is more easily worn can use higher quality abrasives, thereby enhancing the wear resistance of the edge area of ​​the milling head and extending the service life of the milling head.

[0040] 2. The setting of the screen can perform secondary dispersion on the abrasive particles falling into the receiving hopper, thereby further improving the uniformity of the abrasive particle distribution.

[0041] 3. The first blanking opening is a first blanking slit arranged along the radial direction of the end face of the milling head base, so that the present invention can realize online sanding of the edge area of ​​the end face of the milling head base, and combined with the rotation of the milling head base, the edge area of ​​the end face of the milling head base can be sanded more evenly and comprehensively.

[0042] 4. The bracket shell is switched to a vertical state or a horizontal state, and in the vertical state, the end surface of the milling head base is sanded, and in the horizontal state, the side surface of the milling head base is sanded. This allows the present invention to successively complete the sanding of the end surface and the side surface of the same milling head base, thereby improving the sanding efficiency.

[0043] 5. The third blanking opening is a second blanking slit parallel to the axis of the milling head base, so that the present invention can achieve online sanding on the side of the milling head base, and in combination with the rotation of the milling head base, the side of the milling head base can be sanded more evenly and comprehensively.

[0044] 6. The setting of the shock-absorbing platform can prevent the rotating sand-feeding mechanism and the vibration mechanism from shifting during the vibration process.

[0045] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments; however, the vibrating and rotating sand-loading device and the sand-loading method of an optional area of ​​the present invention are not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention when the bracket is in a standing state;

[0047] Figure 2 It is a front view of the present invention when the bracket is in a vertical position;

[0048] Figure 3 It is a schematic diagram of the connection between the support base and the shock absorbing platform of the present invention;

[0049] Figure 4 is a schematic structural diagram of the support frame of the present invention;

[0050] Figure 5 is a top view of the bracket of the present invention;

[0051] Figure 6 is a corresponding schematic diagram of the first selection area sheet and the milling head base of the present invention;

[0052] Figure 7 is a corresponding schematic diagram of the second area selection sheet and the milling head base of the present invention;

[0053] Figure 8 It is a schematic diagram of the three-dimensional structure of the present invention when the bracket is in a lying state;

[0054] Fig. 9 It is a schematic diagram of adjusting the support of the present invention in a horizontal state;

[0055] Fig.10 is a partial top view of the support of the present invention in a lying state;

[0056] Fig.11 It is a corresponding schematic diagram of the third selection area sheet and the milling head base of the present invention. DETAILED DESCRIPTION

[0057] For examples, see Figure 1-Figure 11 As shown, a vibrating and rotating sanding device for selecting a region of the present invention comprises a rotating sanding mechanism and a vibrating mechanism. The rotating sanding mechanism comprises a bracket 7, a motor 6, a first selection plate 11, a second selection plate 11', and a material receiving hopper 8. The bracket 7 is provided with a sanding cavity. The material receiving hopper 8 is arranged on the bracket 7 and connected to the sanding cavity. The motor 6 is an adjustable speed motor, which is installed on the bracket 7 and is used to drive the milling head base 10 located in the sanding cavity to rotate around its axis. The first selection plate 11 is provided with a first sanding cavity connected to the milling head base 10. The first blanking port corresponds to the edge area 1001 of the end face of the milling head base 10, and the second selection piece 11' is provided with a second blanking port corresponding to the middle area 1002 of the end face of the milling head base 10. One of the first selection piece 11 and the second selection piece 11' is detachably arranged on the bracket 7 and is located between the upper sand cavity and the receiving hopper 8; the vibration mechanism includes a high-frequency vibrator 1 and an upper hopper 101 arranged on the high-frequency vibrator 1, and the discharge port of the upper hopper 101 is matched directly above the receiving hopper 8.

[0058] In this embodiment, the present invention further includes a shock absorbing platform 4, on which the rotating sanding mechanism and the vibrating mechanism are arranged, and the shock absorbing platform 4 is used to prevent the rotating sanding mechanism and the vibrating mechanism from shifting during the vibration process. Specifically, the bracket 7 is arranged on a base 5, and the high-frequency vibrator 1 is adjustable and horizontally arranged on a support seat 2, and the support seat 2 and the base 5 are arranged on the shock absorbing platform 4. Specifically, the support seat 2 is fixed to the shock absorbing platform 4 by a plurality of fixing bolts 3. Figure 3 As shown, the support leg 102 of the high-frequency vibrator 1 is embedded in the countersunk hole 201 on the upper surface of the top plate of the support seat 2, and there is a height adjustment bolt 202 at the bottom, which is installed in the screw hole on the back side of the top plate of the support seat 2. By rotating the height adjustment bolt 202, the support leg 102 is lifted up and the position of the vibrator and the upper hopper 101 is adjusted, so that the plane of the upper hopper 101 remains horizontal, thereby improving the effect of vibration dispersion of the abrasive particles.

[0059] In this embodiment, a screen is provided at the bottom of the receiving hopper 8 for abrasive particles to pass through. The first blanking opening is a first blanking slit 1101 provided along the radial direction of the end face of the milling head base 10, and the second blanking opening is a blanking hole 1102 located on the central axis of the end face of the milling head base 10.

[0060] In this embodiment, the bracket 7 can be switched to a vertical state or a horizontal state, and in the vertical state, the end face of the milling head base 10 is sanded, and in the horizontal state, the side of the milling head base 10 is sanded; the receiving hopper 8 has two installation positions on the bracket 7 that are adapted to the vertical state and the horizontal state; the rotating sanding mechanism also includes a third selection piece 12, which is provided with a third blanking opening corresponding to the side of the milling head base 10. When the bracket 7 is in the horizontal state, the third selection piece 12 is installed on the bracket 7 and is located between the sanding cavity and the receiving hopper 8. The third blanking opening is a second blanking slit 1201 parallel to the axis of the milling head base 10.

[0061] In this embodiment, the base 5 includes a base 501 and two vertical guide groove plates 502 arranged on the base 501 and opposite to each other. The base 501 is fixed to the shock absorbing platform 4 by a plurality of fixing bolts 3. The bracket 7 is pivoted between the two vertical guide groove plates 502, and the bracket 7 is switched to a vertical state or a horizontal state by rotation, and in the horizontal state, it is lifted by a magnetic pad 503. The bracket 7 includes two left and right vertical support plates 701, and an upper partition plate 702, a middle partition plate 703, a lower partition plate 704, a side plate 705, and a reinforcing plate 708 arranged between the two support plates 701. The upper sand cavity is surrounded by the upper partition plate 702, the middle partition plate 703, the side plate 705 and the two support plates 701, and the reinforcing plate 708 is arranged between the bottoms of the two support plates 701. The motor 6 is mounted on the lower partition 704, and the output shaft of the motor 6 faces upward, and is connected to the milling head base 10 through a drill chuck 9. Specifically, the upper end of the milling head base 10 is mounted on the middle partition 703, and the clamping rod of the milling head base 10 passes downward through the circular hole in the middle of the middle partition 703 and is locked by the drill chuck 9. When the bracket 7 is in a vertical state, the material receiving hopper 8, the first selection plate 11 or the second selection plate 11' is set in the mounting hole set in the upper partition 702. When the bracket 7 is in a horizontal state, the side plate 705 faces upward, and the material receiving hopper 8 and the third selection plate 12 are set in the mounting hole set in the side plate 705. The mounting hole is a circular stepped hole. The tops of the two support plates 701 are provided with concentric short-axis bosses 706 on the opposite outer sides. The two short-axis bosses 706 are installed in the long strip guide grooves arranged vertically on the guide groove plate 502 in cooperation with the soft gaskets 707. When the bracket 7 is in a lying state, the height and angle of the bracket 7 can be adjusted, such as Fig. 9 As shown, the magnetic pad 503 disposed on the base 501 is specifically used to raise the base 501.

[0062] The vibrating and rotating sanding device of an optional zone of the present invention, when its support 7 is in a vertical state, Figure 1-Figure 7As shown, the present invention can sand the edge area 1001 and the middle area 1002 of the end face of the milling head base 10 separately. When sanding the edge area 1001 of the end face of the milling head base 10, the first selection piece 11 is selected to be installed in the mounting hole of the upper partition 702, and the first selection piece 11 is located below the screen. When sanding the middle area 1002 of the end face of the milling head base 10, the second selection piece 11' is selected to be installed in the mounting hole of the upper partition 702, and the second selection piece 11' is located below the screen. The quality of the diamond abrasive grains used to sand the edge area 1001 of the end face of the milling head base 10 is higher than that of the diamond abrasive grains used to sand the middle area 1002 of the end face of the milling head base 10.

[0063] When the support 7 is in a lying position, Figure 8-Figure 11 As shown, the present invention can sand the side of the milling head base 10. At this time, the third selection piece 12 is selected and installed in the mounting hole of the side plate 705. At the same time, the hopper 8 is also installed in the mounting hole of the side plate 705, and the screen at the bottom of the hopper 8 is located above the third selection piece 12.

[0064] During operation, the height of the four legs 102 of the high-frequency vibrator 1 is finely adjusted by rotating the height adjustment bolts 202 on the back of the top plate of the support seat 2, so that the upper hopper 101 is kept horizontal. Next, the high-frequency vibrator 1 is started, and the appropriate frequency and amplitude are selected. The high-frequency vibrator 1 transmits the generated vibration to the upper hopper 101, so that the diamond abrasive grains to be sanded in the upper hopper 101 are forced to vibrate, thereby improving the dispersion effect of the diamond abrasive grains, and allowing the diamond abrasive grains to be evenly scattered from the discharge port of the upper hopper 101, so as to achieve the purpose of even sanding. The diamond abrasive grains dropped from the upper hopper 101 fall on the screen, and are arranged in at least one row under the secondary dispersion of the screen, and fall from the first blanking slit 1101 of the first selection piece 11, the blanking hole 1102 of the second selection piece 11', or the second blanking slit 1201 of the third selection piece 12. At the same time, the motor 6 drives the milling head base 10 to be sanded to rotate through the drill chuck 9, so that the dropped diamond abrasive grains are evenly and completely adhered to the surface of the milling head base 10.

[0065] The present invention discloses a vibrating and rotating sanding device with selectable areas, which adopts a high-frequency vibrator 1 and a screen to disperse diamonds, and combines the rotation method to uniformly sand a milling head base 10 to avoid abrasive grains from agglomerating; a first selection area sheet 11 and a second selection area sheet 11' are used to control the sanding area, so as to realize the separate sanding of the edge area 1001 and the middle area 1002 of the end face of the milling head base 10, so that the edge area 1001 of the end face of the milling head base 10 can use higher quality abrasive grains, thereby enhancing the wear resistance of the edge area 1001 of the milling head and extending the service life of the milling head.

[0066] The present invention provides a sanding method for a vibrating and rotating sanding device with an optional area, comprising a first sanding process for sanding the edge area of ​​the end surface of a milling head base body, a second sanding process for sanding the middle area of ​​the end surface of the milling head base body, and a third sanding process for sanding the side surface of the milling head base body; the first sanding process comprises the following steps:

[0067] A1) When the support is in a vertical position, the first selection area sheet is arranged on the support, and the receiving hopper is located at a corresponding installation position;

[0068] A2) pouring a certain amount of first abrasive particles into an upper hopper and starting a high-frequency vibrator;

[0069] A3) Start the motor;

[0070] A4) After sanding is completed, turn off the high-frequency vibrator and motor.

[0071] The second sanding process includes the following steps:

[0072] B1) When the support is in a vertical position, the second selection area sheet is arranged on the support, and the receiving hopper is located at a corresponding installation position;

[0073] B2) pouring a certain amount of second abrasive grains whose grade is lower than that of the first abrasive grains into the upper hopper, and starting the high-frequency vibrator;

[0074] B3) Start the motor;

[0075] B4) After sanding is completed, turn off the high-frequency vibrator and motor;

[0076] The third sanding process includes the following steps:

[0077] C1) When the support is in a horizontal position, the third selection area sheet is arranged on the support, and the receiving hopper is located at a corresponding installation position;

[0078] C2) pouring a certain amount of third abrasive grains into the upper hopper and starting the high-frequency vibrator; the grade of the third abrasive grains may be the same as or different from the grade of the first abrasive grains and the second abrasive grains;

[0079] C3) Start the motor;

[0080] C4) After sanding is completed, turn off the high-frequency vibrator and motor.

[0081] In other embodiments, the support has only a standing working mode, and the sanding method of the vibration and rotation sanding device in an optional area of ​​the present invention only includes the first sanding process and the second sanding process.

[0082] The above embodiment is only used to further illustrate a vibrating and rotating sanding device and a sanding method of an optional area of ​​the present invention, but the present invention is not limited to the embodiment. Any simple modifications, equivalent changes and modifications made to the above embodiment based on the technical essence of the present invention fall within the protection scope of the technical solution of the present invention.

Claims

1. A vibrating and rotating sanding device for a selectable area, characterized in that: The invention comprises a rotating sand feeding mechanism and a vibration mechanism. The rotating sand feeding mechanism comprises a bracket, a motor, a first selection plate, a second selection plate, and a material receiving hopper. The bracket is provided with an upper sand cavity. The material receiving hopper is arranged on the bracket and connected with the upper sand cavity. The motor is installed on the bracket and is used to drive the milling head base located in the upper sand cavity to rotate around its axis. The first selection plate is provided with a first blanking port corresponding to the edge area of ​​the end face of the milling head base, and the second selection plate is provided with a second blanking port corresponding to the middle area of ​​the end face of the milling head base. One of the first selection plate and the second selection plate is detachably arranged on the bracket and is located between the upper sand cavity and the material receiving hopper. The vibration mechanism The structure includes a high-frequency vibrator and a loading hopper arranged on the high-frequency vibrator, the discharge port of the loading hopper is matched just above the receiving hopper; a screen for abrasive particles to pass through is arranged at the bottom of the receiving hopper; the first blanking port is a first blanking slit arranged along the radial direction of the end face of the milling head base, and the second blanking port is a blanking hole located on the central axis of the end face of the milling head base; the rotating sanding mechanism also includes a base, the bracket is arranged on the base, and can be switched to a vertical state or a horizontal state, and in the vertical state, the end face of the milling head base is sanded, and in the horizontal state, the side face of the milling head base is sanded.

2. The vibrating and rotating sanding device for the optional zone according to claim 1 is characterized in that: The material receiving hopper has two installation positions on the bracket that are adapted to its vertical and horizontal states; the rotating sand loading mechanism also includes a third selection plate, which is provided with a third material drop-out port corresponding to the side of the milling head base. When the bracket is in a horizontal state, the third selection plate is installed on the bracket and is located between the sand loading chamber and the material receiving hopper.

3. The vibrating and rotating sanding device for the optional zone according to claim 2 is characterized in that: The third blanking opening is a second blanking slit parallel to the axis of the milling head base.

4. The vibrating and rotating sanding device for the optional zone according to claim 2 is characterized in that: The base includes a pedestal and two vertical guide slot plates arranged on the pedestal and opposite to each other. The bracket is pivoted between the two guide slot plates, and the bracket is switched to a standing state or a lying state by rotation, and in the lying state, it is lifted by a magnetic pad.

5. The vibrating and rotating sanding device for the selectable zone according to any one of claims 2 to 4, characterized in that: The bracket includes two left and right vertical support plates, and an upper partition plate, a middle partition plate, a lower partition plate, and a side plate arranged between the two support plates. The upper sand chamber is surrounded by the upper partition plate, the middle partition plate, the side plate and the two support plates. The motor is installed on the lower partition plate, and the output shaft of the motor faces upward and is connected to the milling head base through a drill chuck. When the bracket is in a vertical state, the material receiving hopper, the first selection plate or the second selection plate is arranged at the mounting hole set in the upper partition plate. When the bracket is in a horizontal state, the material receiving hopper and the third selection plate are arranged at the mounting hole set in the side plate.

6. The vibrating and rotating sanding device for the optional zone according to claim 2, characterized in that: The vibration mechanism further comprises a support seat, on which the high-frequency vibrator is adjustably and horizontally arranged; and a shock-absorbing platform, on which the support seat and the base are arranged.

7. A sanding method for a vibrating and rotating sanding device for a selectable area as claimed in claim 1, characterized in that: The method comprises a first sanding process for sanding the edge area of ​​the end surface of the milling head base body and a second sanding process for sanding the middle area of ​​the end surface of the milling head base body. The first sanding process comprises the following steps: A1) placing the first selection area sheet on a bracket; A2) pouring a certain amount of first abrasive particles into an upper hopper and starting a high-frequency vibrator; A3) Start the motor; A4) After sanding is completed, turn off the high-frequency vibrator and motor; The second sanding process includes the following steps: B1) placing the second selection area sheet on the bracket; B2) pouring a certain amount of second abrasive grains whose grade is lower than that of the first abrasive grains into the upper hopper, and starting the high-frequency vibrator; B3) Start the motor; B4) After sanding is completed, turn off the high-frequency vibrator and motor.

8. A sanding method for a vibrating and rotating sanding device for a selectable zone according to any one of claims 2 to 6, characterized in that: The method comprises a first sanding process for sanding the edge area of ​​the end surface of the milling head base body, a second sanding process for sanding the middle area of ​​the end surface of the milling head base body, and a third sanding process for sanding the side surface of the milling head base body; the first sanding process comprises the following steps: A1) When the support is in a vertical position, the first selection area sheet is arranged on the support, and the receiving hopper is located at a corresponding installation position; A2) pouring a certain amount of first abrasive particles into an upper hopper and starting a high-frequency vibrator; A3) Start the motor; A4) After sanding is completed, turn off the high-frequency vibrator and motor; The second sanding process includes the following steps: B1) When the support is in a vertical position, the second selection area sheet is arranged on the support, and the receiving hopper is located at a corresponding installation position; B2) pouring a certain amount of second abrasive grains whose grade is lower than that of the first abrasive grains into the upper hopper, and starting the high-frequency vibrator; B3) Start the motor; B4) After sanding is completed, turn off the high-frequency vibrator and motor; The third sanding process includes the following steps: C1) When the support is in a horizontal position, the third selection area sheet is arranged on the support, and the receiving hopper is located at a corresponding installation position; C2) pouring a certain amount of third abrasive grains into the upper hopper and starting the high-frequency vibrator; the grade of the third abrasive grains is the same as or different from the grade of the first abrasive grains and the second abrasive grains; C3) Start the motor; C4) After sanding is completed, turn off the high-frequency vibrator and motor.

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