CN118769060A - Angle grinder for synchronous grinding of corners of wooden folding ruler - Google Patents

Abstract

The invention relates to the technical field of wood folding ruler polishing, and discloses an angle grinder for synchronously polishing corners of a wood folding ruler, which comprises a workbench main body, wherein a straightening assembly for straightening the wood folding ruler is arranged on the workbench main body, polishing assemblies for polishing with different precision are arranged on the workbench main body, and a dust falling assembly for collecting wood dust and reducing floating dust in a working area is arranged on the workbench main body; the two grinding wheels are driven to rotate by pressing the switching starting rod, so that the two grinding wheels with different precision can be switched by simple pressing action in the grinding process, the grinding requirements of different precision can be met, the replacement time of the grinding wheels is saved, the grinding process is accelerated, meanwhile, the cleaning brush can clean the surface of the grinding wheels in the grinding wheel switching process, the surface cleaning of the grinding wheels is guaranteed, and the grinding wheels are guaranteed to be in direct contact with the wood folding rule surface.

Description

Angle grinder for synchronous grinding of corners of wooden folding ruler

Technical Field

The invention relates to the technical field of wooden folding ruler grinding, in particular to an angle grinder for synchronously grinding the edges and corners of a wooden folding ruler.

Background Art

Wooden folding rulers are widely used in fields such as construction engineering and teaching. When in use, the user's hand will directly contact the surface of the wooden ruler. If there are uneven burrs on the corners of the wooden ruler, it will scratch the user's hand during use and affect the accuracy of measurement. Therefore, the corners of the wooden ruler need to be polished during the production process.

When grinding the edges and corners of a wooden folding ruler, due to the different initial states of the wooden folding ruler, after the initial grinding of the wooden folding ruler with a rough surface, the smoothness of its surface cannot meet the grinding standard, so it is necessary to replace the grinding wheel with a higher grinding accuracy for fine grinding. The existing replacement method requires the staff to remove the grinding wheel and reinstall it, or tear off the grinding sandpaper and paste a new one. The replacement process is complicated, which greatly reduces the grinding efficiency and causes delays in the grinding progress.

At the same time, when the wooden folding ruler is fixed, if the wooden folding ruler is in an inclined state, in the subsequent grinding process, it cannot be guaranteed that the grinding wheel always fits with the surface of the wooden folding ruler, so that the surface of the wooden folding ruler cannot be evenly subjected to the grinding force, resulting in uneven grinding of the surface of the wooden folding ruler, reducing the grinding quality, and even causing deformation of the wooden folding ruler, affecting the normal use of the wooden folding ruler.

Therefore, an angle grinder for synchronously grinding the edges and corners of a wooden folding ruler is proposed.

Summary of the invention

The object of the present invention is to provide an angle grinder for synchronously grinding the edges and corners of a wooden folding ruler, so as to solve the problems raised in the above-mentioned background technology.

To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an angle grinder for synchronously grinding the edges and corners of a wooden folding ruler, comprising a workbench main body, the workbench main body is provided with a straightening component for straightening the wooden folding ruler, the workbench main body is provided with a grinding component for performing grinding with different precisions, and the workbench main body is provided with a dust reduction component for collecting wood chips and reducing floating dust in the working area.

Preferably, the straightening assembly includes a top bracket, the top bracket is fixedly connected to the top of the workbench body, the surface of the top bracket is fixedly connected to an electric telescopic rod, the telescopic end of the electric telescopic rod is fixedly connected to a fixed pressure plate, the top of the fixed pressure plate is symmetrically fixedly connected to a linkage gear rod, the surface of the top bracket is symmetrically rotatably connected to a linkage gear, the linkage gear rod and the linkage gear are meshed with each other, the linkage gears are each provided with a ratchet groove inside, the linkage gears are each rotatably connected to a linkage round block inside, the linkage round block is fixedly connected to a clamping spring inside, and the clamping spring is fixedly connected to a clamping block at one end away from the linkage round block.

Preferably, the straightening assembly also includes a connecting rotating rod, which is fixedly connected to a side surface of the linkage round block away from the top bracket, and the surface of the top bracket is symmetrically rotatably connected with a belt shaft starting bevel gear, and a connecting belt is transmission-connected between the connecting rotating rod and the belt shaft starting bevel gear, and the top of the workbench main body is symmetrically rotatably connected with the belt shaft linkage bevel gear, and the belt shaft linkage bevel gear and the belt shaft starting bevel gear are meshed with each other, and the top of the workbench main body is symmetrically rotatably connected with a linkage turntable, and a transmission belt is transmission-connected between the linkage turntable and the belt shaft linkage bevel gear, and the top of the linkage turntable is eccentrically fixedly connected with a fixed round block, and the surface of the fixed round block is slidably connected with an straightening push rod, and the top of the workbench main body is fixedly connected with a placement rack.

Preferably, the grinding assembly includes a limiting bracket, which is fixedly connected to the top of the workbench body, and the four internal corners of the limiting bracket are rotatably connected to transmission wheels, and the surface of the transmission wheel is transmission-connected to a grinding belt, and the surface of the grinding belt is fixedly connected to a connecting bracket, and the connecting bracket is slidably connected to the inside of the limiting bracket, and the inside of the connecting bracket is fixedly connected to the angle grinder body, and a switching switch is provided on the angle grinder body.

Preferably, the grinding assembly also includes a switching starting block, which is rotatably connected to the interior of the angle grinder body, and a sliding groove that is interconnected with the interior of the angle grinder body is opened in the interior of the angle grinder body, a switching turntable is fixedly connected to a side surface of the switching starting block away from the interior of the angle grinder body, a return spring is fixedly connected to the inner wall of the angle grinder body, one end of the return spring away from the inner wall of the angle grinder body is fixedly connected to a linkage slide rod, the linkage slide rod is slidably connected to the interior of the sliding groove, the interior of the linkage slide rod is fixedly connected to a switching spring, one end of the switching spring close to the switching starting block is fixedly connected to a switching push block, the switching push block is slidably connected to the surface of the switching starting block, a side surface of the linkage slide rod close to the switching starting block is fixedly connected to a switching start rod, the switching start rod penetrates and is slidably connected to the interior of the switching starting block and the switching turntable, a grinding wheel is symmetrically rotatably connected to the surface of the angle grinder body, a protective shell is fixedly connected to the surface of the angle grinder body, a cleaning brush is fixedly connected to the inner wall of the protective shell, and a rotating door panel is rotatably connected to the lower surface of the protective shell.

Preferably, the switching starting block comprises two groups of interconnected long straight grooves a and arc grooves b.

Preferably, the dust reduction component includes a sprayer, which is symmetrically fixedly connected to the side wall of the top bracket, and the inner side wall of the top bracket is symmetrically fixedly connected with a nozzle, the sprayer and the nozzle are connected to each other, a start switch is provided on the sprayer, and the side wall of the connecting bracket is fixedly connected with a control support rod.

Preferably, the dust reduction assembly also includes a limiting groove, which is opened on the top of the workbench body, and a vacuum cleaner is slidably connected to the inside of the workbench body, and a dust suction pipe is rotatably connected to the top of the vacuum cleaner, and the top side wall of the dust suction pipe is fixedly connected to the connecting bracket, and the dust suction pipe is slidably connected to the inside of the limiting groove, and a connecting rod is rotatably connected to the top of the vacuum cleaner, and one end of the connecting rod away from the vacuum cleaner is fixedly connected to the connecting bracket, and the connecting rod is slidably connected to the inside of the limiting groove.

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

1. By pressing the switch start lever, the two grinding wheels are driven to rotate, and then the two grinding wheels with different precisions are switched by a simple pressing action during the grinding process, which can meet the grinding needs of different precisions, save the replacement time of the grinding wheels, and speed up the grinding process. At the same time, during the switching of the grinding wheels, the cleaning brush can clean the surface of the grinding wheels, ensuring the cleanliness of the grinding wheels and the direct contact between the grinding wheels and the surface of the wooden folding ruler, thereby improving the grinding efficiency;

2. The movement of the angle grinder body drives the vacuum tube to move synchronously with the angle grinder body, thereby ensuring that the debris generated by grinding can be sucked into the vacuum cleaner in a timely and maximum manner to avoid the accumulation of debris on the surface of the workbench body, reducing the difficulty of subsequent cleaning. At the same time, during the movement of the angle grinder body, the sprayer can be turned on intermittently to spray water mist to the working area, which can more accurately locate the spraying area of the sprayer, so that the water mist can cover the working area more accurately, reduce the floating dust in the working area, and reduce the health risks of the staff. At the same time, intermittent spraying of water mist can also avoid the influence of excessive water mist on the wooden folding ruler;

3. The two aligning push rods are brought together by moving the fixed pressure plate downward to keep the wooden ruler horizontal. The wooden ruler can be aligned synchronously during the process of fixing the wooden ruler, so that the wooden ruler to be polished is placed horizontally. Therefore, during the polishing process, the corners of the wooden ruler can always be kept in contact with the polishing wheel, and the contact area between the polishing wheel and the surface of the wooden ruler is more stable, so that the polishing surface is subjected to uniform polishing force, and the polishing depth and accuracy can be controlled more accurately, avoiding the damage of the wooden ruler caused by deviations in polishing depth and accuracy due to the tilt of the wooden ruler, thereby ensuring the polishing effect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a perspective schematic diagram of the overall structure of the present invention;

FIG2 is a perspective schematic diagram of the structure of the straightening assembly of the present invention;

FIG3 is a perspective view of the internal structure of the linkage gear of the present invention;

FIG4 is a three-dimensional schematic diagram of the position relationship between the limiting bracket and the transmission wheel of the present invention;

FIG5 is a perspective schematic diagram of the grinding assembly structure of the present invention;

FIG6 is a partial enlarged schematic diagram of the structure at A in FIG5 of the present invention;

FIG7 is a partial enlarged schematic diagram of the structure at B in FIG6 of the present invention;

FIG8 is a schematic diagram of the three-dimensional structure of the switching start block of the present invention;

9 is a three-dimensional schematic diagram of the positional relationship between the switching starting block and the switching push block of the present invention;

FIG10 is a perspective schematic diagram of the internal structure of the protective shell of the present invention;

FIG. 11 is a partial enlarged schematic diagram of the structure at point C in FIG. 10 of the present invention.

In the figure:

1. Workbench body;

The alignment assembly includes: 21, top bracket; 22, electric telescopic rod; 23, fixed pressure plate; 24, linkage gear rod; 25, linkage gear; 26, ratchet groove; 27, linkage round block; 28, clamping spring; 29, clamping block; 210, connecting rod; 211, starting bevel gear with shaft; 212, connecting belt; 213, linkage bevel gear with shaft; 214, linkage turntable; 215, transmission belt; 216, fixed round block; 217, alignment push rod; 218, placement rack;

The grinding assembly includes: 31, a limit bracket; 32, a driving wheel; 33, a grinding belt; 34, a connecting bracket; 35, an angle grinder body; 36, a switching switch; 37, a switching starting block; 38, a sliding groove; 39, a switching turntable; 310, a reset spring; 311, a linkage slide rod; 312, a switching spring; 313, a switching push block; 314, a switching start rod; 315, a grinding wheel; 316, a protective shell; 317, a cleaning brush; 318, a rotating door panel;

The dust suppression assembly includes: 41, a sprayer; 42, a nozzle; 43, a start switch; 44, a control support rod; 45, a limit groove; 46, a vacuum cleaner; 47, a vacuum tube; 48, a connecting rod.

DETAILED DESCRIPTION

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

Please refer to Figures 1 to 11, which are an embodiment of the present invention: an angle grinder for synchronously grinding the edges and corners of a wooden folding ruler, comprising a workbench main body 1, on which is provided a straightening component for straightening the wooden folding ruler, on which is provided a grinding component for performing grinding with different precisions, and on which is provided a dust reduction component for collecting wood chips and reducing floating dust in the working area.

The alignment component includes a top bracket 21, which is fixedly connected to the top of the workbench body 1. The surface of the top bracket 21 is fixedly connected to an electric telescopic rod 22, and the telescopic end of the electric telescopic rod 22 is fixedly connected to a fixed pressure plate 23. The top of the fixed pressure plate 23 is symmetrically fixedly connected to a linkage gear rod 24. The surface of the top bracket 21 is symmetrically rotatably connected to a linkage gear 25. The linkage gear rod 24 and the linkage gear 25 are meshed with each other. The linkage gear 25 is provided with a ratchet groove 26 inside. The linkage gear 25 is rotatably connected to a linkage round block 27 inside. The linkage round block 27 is fixedly connected to a clamping spring 28. The end of the clamping spring 28 away from the linkage round block 27 is fixedly connected to a clamping block 29. The alignment component also includes a connecting rotating rod 210, which is fixedly connected to the connecting rod 210. It is connected to the side surface of the linkage block 27 away from the top bracket 21, the surface of the top bracket 21 is symmetrically rotated and connected with a shaft starting bevel gear 211, a connecting belt 212 is transmission-connected between the connecting rotating rod 210 and the shaft starting bevel gear 211, the top of the workbench body 1 is symmetrically rotated and connected with a shaft linkage bevel gear 213, the shaft linkage bevel gear 213 and the shaft starting bevel gear 211 are meshed with each other, the top of the workbench body 1 is symmetrically rotated and connected with a linkage turntable 214, a transmission belt 215 is transmission-connected between the linkage turntable 214 and the shaft linkage bevel gear 213, the top of the linkage turntable 214 is eccentrically fixedly connected with a fixed block 216, the surface of the fixed block 216 is slidably connected with a straightening push rod 217, and the top of the workbench body 1 is fixedly connected with a placement rack 218.

There is an electrical connection between the electric telescopic rod 22 and the external power source, and the end of the clamping block 29 away from the linkage round block 27 is matched with the shape of the ratchet groove 26 .

The grinding assembly includes a limit bracket 31, which is fixedly connected to the top of the workbench body 1. The four corners of the limit bracket 31 are rotatably connected to the transmission wheel 32. The surface of the transmission wheel 32 is transmission-connected to the grinding belt 33. The surface of the grinding belt 33 is fixedly connected to the connecting bracket 34. The connecting bracket 34 is slidably connected to the inside of the limit bracket 31. The inside of the connecting bracket 34 is fixedly connected to the angle grinder body 35. A switching switch 36 is arranged on the angle grinder body 35. The grinding assembly also includes a switching starting block 37. The switching starting block 37 is rotatably connected to the inside of the angle grinder body 35. The switching starting block 37 includes two groups of interconnected long straight grooves a and arc grooves b. The inside of the angle grinder body 35 is provided with a sliding groove 38 that is interconnected with the inside of the angle grinder body 35. The side surface of the switching starting block 37 away from the inside of the angle grinder body 35 is fixedly connected to the switching turntable 39. The inside of the angle grinder body 35 The wall is fixedly connected with a return spring 310, and one end of the return spring 310 away from the inner wall of the angle grinder body 35 is fixedly connected with a linkage slide bar 311, and the linkage slide bar 311 is slidably connected to the inside of the sliding groove 38, and a switching spring 312 is fixedly connected to the inside of the linkage slide bar 311, and the switching spring 312 is fixedly connected to the end of the switching starting block 37 close to the switching starting block 37. The switching push block 313 is slidably connected to the surface of the switching starting block 37, and a switching start rod 314 is fixedly connected to the surface of the linkage slide bar 311 close to the switching starting block 37. The switching start rod 314 penetrates and slides through the inside of the switching starting block 37 and the switching turntable 39. The surface of the switching turntable 39 is symmetrically rotatably connected with a grinding wheel 315, and a protective shell 316 is fixedly connected to the surface of the angle grinder body 35, and a cleaning brush 317 is fixedly connected to the inner wall of the protective shell 316, and a rotating door panel 318 is rotatably connected to the lower surface of the protective shell 316.

Among them: the transmission wheel 32 is fixedly installed on the output end of the external driving device, the two symmetrically arranged grinding wheels 315 are respectively fixedly installed on the output end of the external motor, the two grinding wheels 315 are set to different grinding precisions, the switching switch 36 can be toggled left and right to control the electrical connection between the external power supply and the grinding wheels 315 with different precisions respectively, a reset torsion spring is provided at the rotating connection between the rotating door panel 318 and the protective shell 316, and the cleaning brush 317 is located at the outlet of the protective shell 316.

The dust reduction component includes a sprayer 41, which is symmetrically fixedly connected to the side wall of the top bracket 21, and the inner side wall of the top bracket 21 is symmetrically fixedly connected with a nozzle 42, the sprayer 41 and the nozzle 42 are communicated with each other, a start switch 43 is provided on the sprayer 41, and the side wall of the connecting bracket 34 is fixedly connected with a control support rod 44, the dust reduction component also includes a limiting groove 45, the limiting groove 45 is opened on the top of the workbench body 1, and a dust collector 46 is slidably connected to the inside of the workbench body 1, and the top of the dust collector 46 is rotatably connected to a dust suction pipe 47, the top side wall of the dust suction pipe 47 is fixedly connected to the connecting bracket 34, and the dust suction pipe 47 is slidably connected to the inside of the limiting groove 45, and the top of the dust collector 46 is rotatably connected to a connecting rod 48, and the end of the connecting rod 48 away from the dust collector 46 is fixedly connected to the connecting bracket 34, and the connecting rod 48 is slidably connected to the inside of the limiting groove 45.

The above implementation works as follows:

The initialization steps are as follows:

In the initial state, a grinding wheel 315 for rough grinding is located outside the protective shell 316, the switch 36 is in a vertical state, and the switch push block 313 is located at the top of the arc groove b.

The working steps are as follows:

The following is a description of the process of straightening the wooden folding ruler:

As shown in FIGS. 2 to 3 , the staff member places the wooden folding ruler on the top of the placement rack 218. At this time, the side wall of the wooden folding ruler fits the surface of the grinding wheel 315. At this time, the staff member toggles the switch 36 to electrically connect the external power supply of the switch 36 to the external motor of the rough grinding wheel 315. After placing the wooden folding ruler, the staff member turns on the external power supply. At this time, the electric telescopic rod 22 is powered on and starts to extend downward. The downward extension of the electric telescopic rod 22 drives the fixed pressure plate 23 at the bottom thereof to move downward synchronously. The downward movement of the fixed pressure plate 23 drives the linkage gear rod 24 fixedly connected thereto to move downward synchronously. The downward movement of the linkage gear rod 24 drives the linkage gear rod 24 to move downward synchronously. The linkage gear 25 meshing with it rotates one circle, because the end of the clamping block 29 away from the linkage round block 27 is adapted to the shape of the ratchet groove 26, at this time, the clamping block 29 is clamped with the linkage gear 25 through the ratchet groove 26, and the rotation of the linkage gear 25 drives the linkage round block 27 to rotate synchronously through the clamping block 29, and the rotation of the linkage round block 27 drives the connecting rod 210 fixedly connected to it to rotate synchronously, and the rotation of the connecting rod 210 drives the belt shaft starting bevel gear 211 to rotate on the surface of the top bracket 21 through the connecting belt 212 connected to it for transmission, and the rotation of the belt shaft starting bevel gear 211 drives the belt shaft linkage bevel gear 2 meshing with it. 13 rotates synchronously, the rotation of the shaft-linked bevel gear 213 drives the linkage turntable 214 to rotate one circle on the top of the workbench body 1 through the transmission belt 215 connected thereto, and the rotation of the linkage turntable 214 drives the fixed round block 216 eccentrically fixedly connected to the top thereof to rotate once around the center of the linkage turntable 214, and the rotation of the fixed round block 216 makes it slide inside the alignment push rod 217 and pushes the alignment push rod 217 to slide on the surface of the linkage turntable 214, and when the two symmetrically arranged alignment push rods 217 approach each other, the wooden folding ruler can be clamped from both sides of the wooden folding ruler to keep the wooden folding ruler in a horizontal state, and then the alignment push rods 217 are mutually aligned. The folding ruler 23 is separated and restored to its initial position, and the fixed pressing plate 23 is moved down to contact with the top of the wooden ruler, so that the wooden ruler can be straightened synchronously during the process of fixing the wooden ruler, so that the wooden ruler to be polished is placed in a horizontal state, so that during the polishing process, the corners of the wooden ruler can always keep in contact with the polishing wheel 315, and the contact area between the polishing wheel 315 and the surface of the wooden ruler is large and more stable, so that the polishing surface is subjected to a uniform polishing force, and the polishing depth and accuracy can be controlled more accurately, avoiding the damage of the wooden ruler caused by deviations in the polishing depth and accuracy due to the inclination of the wooden ruler, thereby ensuring the polishing effect.

The following is a description of the process of grinding the edges and corners of a wooden folding ruler and collecting sawdust:

As shown in Figure 4, after the wooden folding ruler is fixed, there is an electrical connection between the external motor of the grinding wheel 315 used for rough grinding and the external power supply. The external motor starts to drive the grinding wheel 315 to rotate to grind the edge of the wooden folding ruler. At the same time, the external driving device of the transmission wheel 32 starts to drive the transmission wheel 32 to start rotating. The rotation of the transmission wheel 32 drives the grinding belt 33 connected to it to start transmission. The transmission of the transmission wheel 32 drives the connecting bracket 34 fixedly connected to it to move synchronously along the transmission track of the grinding belt 33. The movement of the connecting bracket 34 drives the angle grinder body 35 fixedly connected to it to move synchronously. The movement of the angle grinder body 35 drives the grinding wheel 315 to move synchronously to grind the corners of the wooden folding ruler.

As shown in Figures 2 and 10, during the movement of the connecting bracket 34, the movement of the connecting bracket 34 drives the vacuum cleaner 46 to move synchronously inside the workbench body 1 through the connecting rod 48 fixedly connected thereto, and at the same time, the rotation of the connecting bracket 34 drives the vacuum tube 47 fixedly connected thereto to move synchronously inside the limiting groove 45, so that the debris generated by grinding can be collected in time to prevent the debris from being scattered on the top of the workbench body 1. At the same time, the movement of the connecting bracket 34 drives the control support rod 44 to move synchronously. When the control support rod 44 moves to conflict with the start switch 43, the start switch 43 will slide along the inclined surface of the control support rod 44 and collide with the top of the control support rod 44. At this time, the sprayer 41 is started and water mist is sprayed to the working area through the nozzle 42. When the control support rod 44 moves to the other side of the wooden folding ruler, the movement of the control support rod 44 will start the sprayer 41 on the other side to spray water mist to the working area, thereby more accurately positioning the spraying area of the sprayer 41, so that the water mist can cover the working area more accurately, reduce the floating dust in the working area, and reduce the health risks of the workers. At the same time, intermittent spraying of water mist can also avoid the influence of excessive water mist on the wooden folding ruler.

When the grinding wheel 315 rotates around the surface of the wooden folding ruler to complete the grinding of the corners of the wooden folding ruler, the external drive device of the transmission wheel 32 is powered off, the transmission wheel 32 stops rotating, the external motor of the grinding wheel 315 is powered off, the grinding wheel 315 stops rotating, the electric telescopic rod 22 is powered on to start to retract upward, the upward retraction of the electric telescopic rod 22 drives the fixed pressing plate 23 to move upward synchronously away from the surface of the wooden folding ruler, the upward movement of the fixed pressing plate 23 drives the linkage gear rod 24 to move upward synchronously, and the linkage gear rod 24 moves upward. The upward movement drives the linkage gear 25 meshing with it to rotate, because the end of the clamping block 29 away from the linkage round block 27 is adapted to the ratchet groove 26. At this time, when the linkage gear 25 rotates, the inner wall slope of the ratchet groove 26 will push the clamping block 29 toward the inside of the linkage round block 27 and compress the clamping spring 28. The clamping block 29 will not be clamped with the linkage gear 25, and the rotation of the linkage gear 25 will not drive the rotation of the linkage round block 27. After the fixed pressure plate 23 leaves the surface of the wooden folding ruler, the staff can remove the wooden folding ruler.

The following is a description of the process of switching between grinding wheels of different precisions 315:

As shown in Figures 5 to 11, after the wooden folding ruler is roughly ground for one circle, the staff can confirm the grinding result of the wooden folding ruler. If the wooden folding ruler needs to be finely ground again, the staff presses the switching start rod 314 into the inside of the angle grinder body 35. The sliding of the switching start rod 314 into the inside of the angle grinder body 35 drives the linkage slide bar 311 fixedly connected thereto to slide in the direction of the switching switch 36 inside the sliding groove 38. The sliding of the linkage slide bar 311 compresses the reset spring 310. The sliding of the linkage slide bar 311 drives the switching push block 313 to slide downward inside the arc groove b of the switching starting block 37. Because the sliding groove 38 limits the rotation of the linkage slide bar 311, the downward sliding of the switching push block 313 will push the inner wall of the arc groove b to cause the switching starting block 37 to rotate. At the same time, when the switching push block 313 moves When the cam 314 is in the state of being moved upwards, the shifting block 313 is moved upwards and the shifting block 313 is moved downwards.

The rotation of the grinding wheel 315 will push the rotating door panel 318 to rotate open, and a grinding wheel 315 for rough grinding will enter the interior of the protective shell 316, and a grinding wheel 315 for fine grinding will rotate out of the interior of the protective shell 316 and rotate to a position that fits with the wooden folding ruler. Then, under the elastic action of the reset torsion spring, the rotating door panel 318 rotates and closes, and at the same time, the cleaning brush 317 is located at the exit of the protective shell 316, so that when the grinding wheel 315 rotates out of the protective shell 316, the surface of the grinding wheel 315 can be cleaned, so that the surface of the grinding wheel 315 remains clean. After the switching is completed, the staff toggles the switching switch 36 to the other side, so that the grinding wheel 315 for fine grinding can be turned off. The external motor for grinding a grinding wheel 315 is electrically connected to the external power supply, so that the wooden folding ruler can be finely ground again, and then during the grinding process, the switching of two grinding wheels 315 with different precisions is completed by pressing the switching start lever 314, which makes the switching of the grinding wheel 315 easier, can meet the grinding requirements of different precisions, and also saves the replacement time of the grinding wheel 315, speeding up the grinding process. At the same time, during the switching process of the grinding wheel 315, the cleaning brush 317 can clean the surface of the grinding wheel 315, ensuring the cleanliness of the surface of the grinding wheel 315, ensuring that the grinding wheel 315 is in direct contact with the surface of the wooden folding ruler, and improving the grinding efficiency.

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

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 (8)

1. An angle grinder for synchronously grinding the edges and corners of a wooden folding ruler, comprising a workbench main body (1), characterized in that: the workbench main body (1) is provided with a straightening component for straightening the wooden folding ruler, the workbench main body (1) is provided with a grinding component for performing grinding with different precisions, and the workbench main body (1) is provided with a dust reduction component for collecting wood chips and reducing floating dust in the working area. 2. An angle grinder for synchronously grinding corners of a wooden folding ruler according to claim 1, characterized in that: the alignment component includes a top bracket (21), the top bracket (21) is fixedly connected to the top of the workbench body (1), the surface of the top bracket (21) is fixedly connected with an electric telescopic rod (22), the telescopic end of the electric telescopic rod (22) is fixedly connected with a fixed pressure plate (23), the top of the fixed pressure plate (23) is symmetrically fixedly connected with a linkage gear (24), the surface of the top bracket (21) is symmetrically rotatably connected with a linkage gear (25), the linkage gear (24) and the linkage gear (25) are meshed with each other, the interior of the linkage gear (25) is provided with a ratchet groove (26), the interior of the linkage gear (25) is rotatably connected with a linkage round block (27), the interior of the linkage round block (27) is fixedly connected with a clamping spring (28), and the end of the clamping spring (28) away from the linkage round block (27) is fixedly connected with a clamping block (29). 3. An angle grinder for synchronously grinding the corners of a wooden folding ruler according to claim 2, characterized in that: the straightening component also includes a connecting rod (210), the connecting rod (210) is fixedly connected to the side surface of the linkage round block (27) away from the top bracket (21), the surface of the top bracket (21) is symmetrically connected to the starting bevel gear (211) with an axis, a connecting belt (212) is connected to the connecting rod (210) and the starting bevel gear (211) with an axis, and the top of the workbench body (1) is symmetrically connected to the linkage bevel gear ( 213), the belt shaft linkage bevel gear (213) and the belt shaft starting bevel gear (211) are meshed with each other, the top of the workbench body (1) is symmetrically rotatably connected with a linkage turntable (214), a transmission belt (215) is transmission-connected between the linkage turntable (214) and the belt shaft linkage bevel gear (213), the top of the linkage turntable (214) is eccentrically fixedly connected with a fixed round block (216), the surface of the fixed round block (216) is slidably connected with a straightening push rod (217), and the top of the workbench body (1) is fixedly connected with a placement frame (218). 4. An angle grinder for synchronously grinding the edges and corners of a wooden folding ruler according to claim 1, characterized in that: the grinding component includes a limiting bracket (31), the limiting bracket (31) is fixedly connected to the top of the workbench body (1), the four corners inside the limiting bracket (31) are rotatably connected to a transmission wheel (32), the surface of the transmission wheel (32) is transmission-connected to a grinding belt (33), the surface of the grinding belt (33) is fixedly connected to a connecting bracket (34), the connecting bracket (34) is slidably connected to the inside of the limiting bracket (31), the inside of the connecting bracket (34) is fixedly connected to an angle grinder body (35), and a switching switch (36) is provided on the angle grinder body (35). 5. An angle grinder for synchronously grinding the edges and corners of a wooden folding ruler according to claim 4, characterized in that: the grinding assembly also includes a switching starting block (37), the switching starting block (37) is rotatably connected to the inside of the angle grinder body (35), the inside of the angle grinder body (35) is provided with a sliding groove (38) that is interconnected with the inside of the angle grinder body (35), the switching starting block (37) is fixedly connected to a switching turntable (39) on a side surface away from the inside of the angle grinder body (35), the inner wall of the angle grinder body (35) is fixedly connected to a return spring (310), one end of the return spring (310) away from the inner wall of the angle grinder body (35) is fixedly connected to a linkage slide rod (311), the linkage slide rod (311) is slidably connected to the inside of the sliding groove (38), and the inside of the linkage slide rod (311) is fixedly connected to the inside of the sliding groove (38). A switching spring (312) is fixedly connected, and one end of the switching spring (312) close to the switching starting block (37) is fixedly connected to a switching push block (313), and the switching push block (313) is slidably connected to the surface of the switching starting block (37). A side surface of the linkage slide bar (311) close to the switching starting block (37) is fixedly connected to a switching start rod (314), and the switching start rod (314) penetrates and is slidably connected to the inside of the switching starting block (37) and the switching turntable (39), and a grinding wheel (315) is symmetrically rotatably connected to the surface of the switching turntable (39), and a protective shell (316) is fixedly connected to the surface of the angle grinder body (35), and a cleaning brush (317) is fixedly connected to the inner wall of the protective shell (316), and a rotating door plate (318) is rotatably connected to the lower surface of the protective shell (316). 6. An angle grinder for synchronously grinding the edges and corners of a wooden folding ruler according to claim 5, characterized in that the switching starting block (37) comprises two sets of interconnected long straight grooves a and arc grooves b. 7. An angle grinder for synchronously grinding the edges and corners of a wooden folding ruler according to claim 4, characterized in that: the dust reduction component includes a sprayer (41), the sprayer (41) is symmetrically fixedly connected to the side wall of the top bracket (21), the inner side wall of the top bracket (21) is symmetrically fixedly connected with a nozzle (42), the sprayer (41) and the nozzle (42) are connected to each other, a start switch (43) is provided on the sprayer (41), and the side wall of the connecting bracket (34) is fixedly connected with a control support rod (44). 8. An angle grinder for synchronously grinding the edges and corners of a wooden folding ruler according to claim 7, characterized in that: the dust reduction component also includes a limiting groove (45), the limiting groove (45) is opened at the top of the workbench body (1), and the inside of the workbench body (1) is slidably connected with a dust collector (46), the top of the dust collector (46) is rotatably connected with a dust suction pipe (47), the top side wall of the dust suction pipe (47) is fixedly connected to the connecting bracket (34), the dust suction pipe (47) is slidably connected to the inside of the limiting groove (45), the top of the dust collector (46) is rotatably connected with a connecting rod (48), the end of the connecting rod (48) away from the dust collector (46) is fixedly connected to the connecting bracket (34), and the connecting rod (48) is slidably connected to the inside of the limiting groove (45).