Portable grinding machine

Abstract

The utility model belongs to the field of polishing tool equipment, and provides a portable polisher which comprises a main shell and a polishing head chuck, the front end of the main shell is detachably connected with a front shell, an inner cavity of the main shell is fixedly provided with a master control board, the front shell is provided with a motor fixing cavity and a rotating shaft through hole, and the polishing head chuck is arranged in the motor fixing cavity. A cylindrical motor fixing frame can be clamped and fixed in the motor fixing cavity, the rotating shaft through hole is communicated with the motor fixing cavity, a bearing is sleeved and fixed on the rotating shaft through hole, a rotating rod of the grinding head chuck penetrates through the bearing and is fixedly connected with a rotating shaft of the motor, a battery pack and a control switch are arranged on the main control panel, and the motor is electrically connected with the main control panel, the control switch and the battery pack. When the grinding machine is used, only the corresponding grinding head needs to be selected and assembled, the main shell is held by hand, the control switch is started, and a part to be ground is ground. The grinding machine is simple in use process, is not influenced by the length of a power line, is convenient to carry, and can be suitable for grinding 3D printing pieces in irregular shapes.

Description

Technical Field

[0001] This utility model relates to the field of polishing tools and equipment, and in particular to a portable polishing machine. Background Technology

[0002] Grinding machines are commonly used tools in industrial manufacturing. They use a built-in motor to drive abrasive particles to interact with the workpiece surface, achieving grinding, polishing, and other surface treatments. With the development of electronic control technology, grinding machines have been gradually applied to various fields of industrial manufacturing. Among these, 3D printing, as an important branch of additive manufacturing, often requires further cleaning of its physical models, such as smoothing support columns or surface steps. Conventional grinding machines are wheel-type grinding machines, such as the portable wheel grinding machine disclosed in Chinese invention patent application publication number "CN109290911A," which uses a motor to drive the grinding wheel to grind the workpiece. However, because its grinding wheel has a sheet-like structure, and 3D printed parts are often irregular in shape and varying in size, this grinding machine is not suitable for grinding 3D printed parts.

[0003] To address this issue, the industry has adopted alternatives such as casting grinding machines. For example, Chinese invention patent application CN109290911A discloses a portable casting grinding machine. This machine includes a motor, a housing fixedly mounted on the motor, a motor spindle, and a handle. A sleeve is installed on the housing of the motor spindle, and the sleeve extends and retracts via threads on the housing. The sleeve is equipped with a locking mechanism, and the grinding wheel is connected to the motor spindle. Before grinding, the sleeve is adjusted to be flush with the grinding wheel. While this type of grinding machine can smooth the surface of workpieces, it is still unsuitable for grinding irregularly shaped 3D printed parts. Summary of the Invention

[0004] The purpose of this invention is to develop a polishing machine suitable for polishing 3D printed parts. The specific technical solution is as follows:

[0005] This utility model provides a portable grinder, including a main housing and a grinding head chuck. A front shell is detachably connected to the front end of the main housing. A main control board is fixedly installed in the inner cavity of the main housing. The front shell has a motor fixing cavity and a shaft through hole. A cylindrical motor fixing frame can be snapped into the motor fixing cavity. The shaft through hole connects to the motor fixing cavity and is fitted with a bearing. The rotating rod of the grinding head chuck passes through the bearing and is fixedly connected to the motor shaft. A battery pack and a control switch are provided on the main control board. The motor is electrically connected to the main control board, the control switch, and the battery pack.

[0006] Optionally, a camera assembly is provided at the bottom of the front shell. The camera assembly includes a camera and a camera control board. The camera control board is provided with a data storage module and an information transceiver module. The data storage module is electrically connected to the camera. The information transceiver module can be connected to an external display device via a wireless network. The camera control board is electrically connected to the main control board.

[0007] Optionally, a camera mounting through hole is provided directly below the pivot through hole of the front shell, and a camera mounting bracket is provided on the axial side of the motor mounting bracket. The front end of the camera mounting bracket is a camera mounting boss, and the rear end of the camera mounting bracket is a camera control board mounting bracket. The camera is fixed to the inside of the camera mounting through hole through the camera mounting boss.

[0008] Optionally, a transparent baffle is attached and fixed to the outside of the camera mounting hole.

[0009] Optionally, the battery pack is a lithium-ion battery pack, the main control board is provided with a power display screen and a charging module, one side of the main housing is provided with a power display window and a power switch slot, a transparent plastic panel is pasted and fixed to the outside of the power display window and the power switch slot, and a rear cover is provided at the rear end of the main housing, and a charging port is provided on the rear cover.

[0010] Optionally, the main control board is sleeved in the inner cavity of the main housing via a control board support frame, and the control switch passes through the keyway and protrudes from the main housing.

[0011] Optionally, the chuck head of the grinding head chuck is detachably connected to the grinding head, and the grinding head includes a connecting shaft and a grinding part.

[0012] Optionally, the grinding part of the grinding head has a conical grinding surface, a spherical grinding surface, a cylindrical grinding surface, or a flat grinding surface.

[0013] The beneficial effects of this utility model are:

[0014] The portable grinder of this utility model is easy to use. Simply select and assemble the appropriate grinding head, hold the main housing, turn on the control switch, and grind the workpiece. The process is simple, unaffected by power cord length, easy to carry, and suitable for grinding irregularly shaped 3D printed parts, effectively solving the aforementioned technical problems in the prior art.

[0015] When polishing 3D printed parts, the camera of this polishing machine can be connected to an external display device (such as a mobile phone). The camera can focus on the interface to be polished and observe the polishing status of the interface in real time, so as to avoid insufficient or excessive polishing.

[0016] In addition, the grinder can be reused repeatedly thanks to its rechargeable battery pack, and the battery level can be monitored through the transparent plastic panel and power display screen. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a portable grinder according to an embodiment of the present invention;

[0018] Figure 2 This is an exploded view of the parts of a portable grinder according to an embodiment of the present invention;

[0019] Figure 3 This is a rear view of a portable grinder according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram illustrating the usage state of a portable ultrasonic cutter according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram illustrating the usage state of a portable ultrasonic cutter according to another embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram illustrating the usage state of a portable ultrasonic cutting knife according to another embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram illustrating the usage state of a portable ultrasonic cutter according to another embodiment of the present invention;

[0024] Figure 8 This is a schematic diagram of the control board module connection of a portable grinder according to the present invention.

[0025] Explanation of icon numbers:

[0026] 01 Main housing, 011 Inner cavity, 012 Power display window, 013 Power switch slot, 015 Transparent plastic panel, 016 Rear cover, 017 Charging port, 03 Front housing, 031 Motor mounting cavity, 032 Shaft through hole, 033 Cylindrical motor mounting bracket, 034 Bearing, 035 Camera mounting through hole, 036 Camera mounting bracket, 037 Camera mounting boss, 038 Camera control board mounting bracket, 04 Main control board, 041 Battery pack, 042 Control switch, 043 Power display, 045 Charging... Electrical module, 046 control board support frame, 06 grinding head chuck, 061 rotating rod, 062 chuck head, 07 motor, 071 rotating shaft, 08 camera assembly, 081 camera, 082 camera control board, 083 data storage module, 084 information transceiver module, 085 transparent baffle, 09 grinding head, 091 connecting shaft, 092 grinding section, 092-1 conical grinding surface, 092-2 spherical grinding surface, 092-3 cylindrical grinding surface, 092-4 flat grinding surface, S external display device.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The following specific examples, in conjunction with the accompanying drawings, illustrate the embodiments of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific examples, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0029] This utility model provides a portable polisher (hereinafter referred to as the polisher), which has the following structural features:

[0030] like Figures 1 to 8As shown, this grinder includes a main housing 01 and a grinding head chuck 06. A front housing 03 is detachably connected to the front end of the main housing 01. A main control board 04 is fixedly installed in the inner cavity 011 of the main housing 01, which can be fixed by screws or slots. The front housing 03 has a motor mounting cavity 031 and a shaft through hole 032. A cylindrical motor mounting bracket 033 can be fixedly mounted in the motor mounting cavity 031. The shaft through hole 032 connects to the motor mounting cavity 031 and is fitted with a bearing 034. The rotating rod 061 of the grinding head chuck 06 passes through the bearing 034 and is fixedly connected to the shaft 071 of the motor 07. A battery pack 041 and a control switch 042 are installed on the main control board 04. The motor 07 is electrically connected to the main control board 04, the control switch 042, and the battery pack 041. During use, turning on the control switch powers the motor via the battery pack. The motor drives the grinding chuck to rotate, and the chuck achieves stable high-speed rotation thanks to the limiting support of the rotating shaft through-hole and bearings. When grinding is required, simply select the appropriate grinding head according to the needs of the grinding interface and fix it into the grinding head chuck to begin grinding.

[0031] This grinder is easy to use; simply select and assemble the appropriate grinding head, hold the main housing, turn on the control switch, and begin grinding the workpiece. The process is simple, unaffected by power cord length, and portable. It is suitable for grinding irregularly shaped 3D printed parts, effectively solving the aforementioned technical problems in existing technologies.

[0032] To improve the polishing accuracy of 3D printed parts, in one embodiment, a camera assembly 08 is provided at the bottom of the front shell 03. The camera assembly 08 includes a camera 081 and a camera control board 082. The camera control board 082 is provided with a data storage module 083 and an information transceiver module 084. The data storage module 083 is electrically connected to the camera 081. The information transceiver module 084 can be connected to an external display device S via a wireless network. The camera control board 082 is electrically connected to the main control board 04.

[0033] Specifically, a camera mounting through-hole 035 is provided directly below the pivot through-hole 032 of the front shell 03, and a camera mounting bracket 036 is provided on one side of the axis of the motor mounting bracket 033. The front end of the camera mounting bracket 036 is a camera mounting boss 037, and the rear end of the camera mounting bracket 036 is a camera control board mounting bracket 038. The camera 081 is fixed to the inside of the camera mounting through-hole 035 through the camera mounting boss 037. When polishing the 3D printed part, the camera of this polishing machine is connected through an external display device (such as a mobile phone). The camera can focus on the interface to be polished, and the polishing status of the interface can be observed in real time, avoiding inadequate or excessive polishing.

[0034] To prevent the camera from being worn by debris during use, in one embodiment, a transparent baffle 085 is attached and fixed to the outside of the camera fixing through hole 035.

[0035] Optionally, the battery pack 041 is a lithium-ion battery pack or other rechargeable battery pack. The main control board 04 is equipped with a power display screen 043 and a charging module 045. Correspondingly, one side of the main housing 01 is provided with a power display window 012 and a power switch slot 013. A transparent plastic panel 015 is adhered and fixed to the outside of the power display window and power switch slot. A rear cover 016 is provided at the rear end of the main housing 01. The rear cover 016 is detachably connected to the rear end of the main housing 01 via a slot. The rear cover 016 is provided with a charging port 017, which can also serve as a data wired transmission port, for example, connecting to an external display device via a data cable. The rechargeable battery pack allows for repeated use of this grinder, and the battery level can be observed through the transparent plastic panel and the power display screen.

[0036] In addition, the main control board 04 is sleeved in the inner cavity 011 of the main housing 01 through the control board support frame 046, and the control switch 042 passes through the switch slot 013 and protrudes from the main housing.

[0037] In one embodiment, the chuck head 062 of the grinding head chuck 06 is detachably connected to the grinding head 09. The grinding head 09 includes a connecting shaft 091 and a grinding section 092. The grinding section 092 of the grinding head 09 has a conical grinding surface 092-1, a spherical grinding surface 092-2, a cylindrical grinding surface 092-3, or a flat grinding surface 092-4, etc. The grinding head is connected and fixed by inserting the connecting shaft into the grinding head chuck and rotating the grinding head chuck to clamp and fix the connecting shaft. During use, the grinding section grinds the interface to be ground. The grinding head with the corresponding grinding surface is selected according to the shape of the interface. For example, a grinding head with a flat grinding surface is used when grinding a flat surface, and a grinding head with a conical grinding surface is used when grinding a V-groove interface. It is worth noting that this grinding head chuck is a common structure for connecting drill bits to existing electric drills, and will not be described in detail here.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A portable grinder, comprising a main housing and a grinding head chuck, characterized in that, The front end of the main housing is detachably connected to a front shell. A main control board is fixedly installed in the inner cavity of the main housing. The front shell is provided with a motor fixing cavity and a shaft through hole. A cylindrical motor fixing bracket can be snapped into the motor fixing cavity. The shaft through hole connects to the motor fixing cavity and is fitted with a bearing. The rotating rod of the grinding head chuck passes through the bearing and is fixedly connected to the motor shaft. The main control board is provided with a battery pack and a control switch. The motor is electrically connected to the main control board, the control switch, and the battery pack.

2. The portable grinder according to claim 1, characterized in that, A camera assembly is located at the bottom of the front shell. The camera assembly includes a camera and a camera control board. The camera control board is equipped with a data storage module and an information transceiver module. The data storage module is electrically connected to the camera. The information transceiver module can be connected to an external display device via a wireless network. The camera control board is electrically connected to the main control board.

3. The portable polisher according to claim 2, characterized in that, A camera mounting through hole is provided directly below the pivot through hole of the front shell, and a camera mounting bracket is provided on the axial side of the motor mounting bracket. The front end of the camera mounting bracket is a camera mounting boss, and the rear end of the camera mounting bracket is a camera control board mounting bracket. The camera is fixed to the inside of the camera mounting through hole by the camera mounting boss.

4. The portable grinder according to claim 3, characterized in that, A transparent baffle is attached and fixed to the outside of the camera mounting hole.

5. The portable grinder according to claim 1, characterized in that, The battery pack is a lithium-ion battery pack. The main control board is equipped with a power display screen and a charging module. One side of the main housing is equipped with a power display window and a power switch slot. The rear end of the main housing is equipped with a rear cover, and the rear cover is equipped with a charging port.

6. The portable grinder according to claim 5, characterized in that, A transparent plastic panel is attached and fixed to the outside of the power display window and the power switch slot.

7. The portable grinder according to claim 5, characterized in that, The main control board is sleeved in the inner cavity of the main housing via a control board support frame, and the control switch passes through the keyway slot and protrudes from the main housing.

8. The portable grinder according to claim 1, characterized in that, The chuck of the grinding head is detachably connected to the grinding head, and the grinding head includes a connecting shaft and a grinding part.

9. The portable grinder according to claim 8, characterized in that, The grinding head has a conical grinding surface, a spherical grinding surface, a cylindrical grinding surface, or a flat grinding surface.

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