CN113997170B - Arc polishing gun with adjustable radian - Google Patents

Abstract

The invention provides a radian-adjustable arc polishing gun, which relates to the field of polishing equipment and comprises a gun body, wherein a power assembly is arranged in the gun body, the output end of the power assembly is connected with a polishing rod, the tail end of the polishing rod is connected with an adjustable arc polishing head, the adjustable arc polishing head comprises a shell, an air inlet interface and a valve, the upper end of the shell is connected on the polishing rod, a plurality of groups of linearly arranged air cavities and piston cavities are formed in the shell, a piston head is connected in a sliding manner in the piston cavity, the outer side end of the piston head is connected with a piston rod, a spring is arranged between the inner part of the piston cavity and the piston head, the head part of the piston rod is connected with a top block, the outer side of the top block is connected with a flexible sand plate, the side wall of each air cavity is provided with an air inlet hole and an air outlet hole, the air inlet hole is connected with the air inlet interface, the air outlet hole is connected with the valve, and the piston head is locked at the position in the piston cavity through the valve. This radian adjustable circular arc rifle of polishing through the length of adjusting and fixing each piston rod, changes flexible sand plate surface arc, adapts to the arc surface of different radians, and the suitability is stronger, and efficiency of polishing is higher.

Description

An arc grinding gun with adjustable arc

technical field

The invention relates to the technical field of grinding equipment, in particular to an arc grinding gun with adjustable arc.

Background technique

The so-called special-shaped parts refer to workpieces with non-rotating structure, non-rotating body and asymmetric shape, collectively referred to as special-shaped parts. In short, it is an irregularly shaped piece. The polishing and deburring of special-shaped parts has always been the main factor affecting the production efficiency of special-shaped parts. Special-shaped parts often have more curved inner and outer facades. For grinding such curved inner and outer facades, traditional grinding tools should Due to the limitations of the grinding head, the grinding angle cannot be changed according to the radian of the inner and outer facades, which greatly reduces the grinding efficiency and affects the grinding accuracy.

Patent CN201811047995.1 A radian grinder with radian adjustment function, including a bottom plate, the upper surface of the bottom plate is provided with a fixed frame, the upper surface of the fixed frame is connected with a servo motor three, and the side of the fixed frame is connected There are fixing bolts, the output shaft of the servo motor three is connected with a U-shaped frame, the two ends of the U-shaped frame are fixedly connected with guide rods, and the two ends of the U-shaped frame are fitted with lead screws through bearings. The slider is connected through the screw nut, and the guide rod runs through the through hole on the side of the slider. The end of the screw is provided with the second servo motor. The mutual cooperation between the frame, the screw, the servo motor and the guide rod can adjust the radian of the grinding.....

Patent CN201911170874.0 discloses a stone grinding device, more specifically, a stone grinding device with an adjustable radian, including a stone plate fixing seat, a grinding swing arm and a center adjustment mechanism. This device realizes different The adjustment of the grinding arc can adjust the distance between the grinding machine and the stone time. The center-of-circle adjustment mechanism is installed on the stone slab fixing seat, and the swing arm for grinding is installed on the center-of-circle adjustment mechanism.

The above existing technologies all have problems such as poor applicability, low precision, complex structure, etc., and are not suitable for special-shaped workpieces with multi-curved inner and outer facades.

Contents of the invention

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the present invention provides an arc grinding gun with adjustable arc, which solves the problems raised in the above-mentioned background art.

(2) Technical solution

In order to achieve the above object, the present invention is achieved through the following technical solutions: an arc grinding gun with adjustable arc, including a gun body, a power assembly is arranged in the gun body, and a grinding rod is connected to the output end of the power assembly. The grinding rod slides on the muzzle of the gun body, and the end of the grinding rod is connected with an adjustable arc grinding head. The adjustable arc grinding head includes a shell, an air inlet port, and a valve. There are several groups of air chambers and piston chambers arranged linearly in the housing, the center of the air chamber and the piston chamber is in a straight line, the piston chamber is slidingly connected to the piston head, and the outer end of the piston head is connected to the piston rod. A spring is accommodated inside the piston cavity and between the piston head, the head of the piston rod is connected to the top block, and the outside of the top block is connected to a flexible sand board, and the side wall of the air cavity is provided with an air inlet and an air outlet, and the air inlet and the air outlet are connected to each other. The air inlet port is connected, the air outlet hole is connected with the valve, and the piston head is locked in the piston cavity through the valve.

Preferably, the front end of the air cavity is further provided with a fixed block cavity, and a fixed block is fitted in the fixed block cavity, and the piston rod is slidably connected in the middle of the fixed block.

Preferably, a sealing ring is sheathed on the surface of the piston head to enhance airtightness.

Preferably, the top of the piston rod is a round head, which is rollingly connected with the top block.

Preferably, the gun body includes an upper shell, a lower shell, a handle, and a gun head, the upper shell and the lower shell are matched, the handle is connected to the bottom side of the lower shell, and the handle is provided with a button switch, The gun head is arranged at the front end of the upper shell and the lower shell.

Preferably, the power assembly includes a motor and a cam, the motor is placed in the handle, and the output end of the motor is connected to the eccentric position of the cam.

(3) Beneficial effects

The invention provides an arc grinding gun with adjustable arc. Has the following beneficial effects:

1. The arc grinding gun with adjustable arc uses a flexible sand plate to fit the arc surface of the special-shaped workpiece to be polished, and fixes the extension length of each piston rod to reciprocate the arc surface. , by adjusting the length of each piston rod, adjust the surface arc of the flexible sand board, adapt to the arc surface of different radians, the applicability is stronger, and the grinding efficiency is higher.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the present invention;

Fig. 2 is a schematic diagram of the overall structure of the present invention;

Fig. 3 is the enlarged view of A place of Fig. 1;

Fig. 4 is the enlarged view of the B place of Fig. 2;

Figure 5 is a schematic diagram of the internal structure of the adjustable arc grinding head;

Fig. 6 is an enlarged view at C of Fig. 5;

Figure 7 is a schematic diagram of the internal structure of the adjustable arc grinding head II;

Fig. 8 is a sectional view of the internal structure of the adjustable arc grinding head;

Fig. 9 is an enlarged view at D of Fig. 8;

Fig. 10 is a schematic diagram of the structure of the power assembly in the gun body.

In the figure: 1, the gun body; 11, the upper shell; 12, the lower shell; 13, the handle; 14, the button switch; 15, the gun head; 2, the power component; 21, the motor; 22, the cam; 3, the grinding rod; 4. Adjustable arc grinding head, 41, shell; 411, fixed block cavity; 412, piston cavity; 413, air cavity, 414, air intake hole; 415, air outlet hole; 416, ventilation hole, 42, piston rod ;421, round head; 43, top block; 44, flexible sand board; 45, air inlet port; 46, valve; 47, fixed block; 48, piston head; 481, sealing ring; 49, spring; 5, special-shaped workpiece .

Detailed ways

The embodiment of the present invention provides an arc grinding gun with adjustable radian, as shown in Figure 1-2, which includes a gun body 1, and a power assembly 2 is installed in the gun body 1, as shown in Figure 10, the power unit in the embodiment of this case Component 2 includes a motor 21 and a cam 22. The motor 21 is placed in the handle 13. The output end of the motor 21 is connected to the eccentric position of the cam 22. The cam 22 is connected to the grinding rod 3 near the muzzle. The rotation of the motor 21 drives the eccentric cam 22 to reciprocate, and then drive the reciprocating movement of the polishing rod 3. In this embodiment, the power of the power assembly 2 is provided by the motor 21, and a pneumatic form can also be used to realize the reciprocating movement of the polishing rod 3 in the cylinder.

As shown in Figures 3 and 4, the end of the grinding rod 3 is connected to an adjustable arc grinding head, the adjustable arc grinding head includes a housing, an air inlet port 45, and a valve 46, and the upper end of the housing is connected to the grinding rod 3, as shown in Figures 5 and 4. As shown in Figure 6, there are several groups of linearly arranged air chambers and piston chambers 412 arranged in the housing, the centers of the air chambers and the piston chambers 412 form a straight line, the piston chamber 412 is slidingly connected to the piston head 48, and the outer end of the piston head 48 is connected to a piston rod , the piston chamber 412 inside and the piston head 48 accommodate the spring 49, the piston chamber 412 is also provided with a vent hole, the piston rod head is connected to the top block 43, the outside of the top block 43 is connected to the flexible sand board 44, and the flexible sand board 44 is outside There are sand-like particles on the surface, and an air inlet and an air outlet 415 are provided on the side wall of the air chamber. For the specific implementation, please refer to the working principle.

Further, as shown in FIG. 5 , a fixed block cavity 411 is provided at the front end of the air cavity, and a fixed block 47 is fitted in the fixed block cavity 411, and the piston rod is slidably connected in the middle of the fixed block 47. By setting the fixed block 47, a more Good airtightness, while the piston rod slides in the middle of the fixed block 47, it is also convenient to lubricate the middle hole of the fixed block 47, preventing the piston rod from sliding and jamming in the fixed block 47.

Further, as shown in Figure 5, the surface of the piston head 48 is also sleeved with a sealing ring 481 to enhance the airtightness, stabilize the air pressure of the gas coming in from the air inlet hole, and ensure the fixed piston head 48 in the piston chamber 412. The stability of the position within.

As shown in Figure 8, the top of the piston rod is a round head 421, which is rollingly connected with the top block 43, and the top block 43 can form different angles with the piston rod according to different radians, so as to better adapt to different radians, interior and exterior surfaces , so that the radian slope of the top block 43 and the flexible sand board 44 is consistent.

Specifically, as shown in Figures 1 and 2, the gun body 1 includes an upper shell 11, a lower shell 12, a handle 13, and a gun head 15. The upper shell 11 and the lower shell 12 are matched and can be connected with screws, and the handle 13 is connected to the lower shell. On one side of the bottom end of the shell 12, the handle 13 is provided with a button switch 14, and the gun head 15 is arranged at the front ends of the upper shell 11 and the lower shell 12. The upper shell 11, the lower shell 12 and the handle 13 are hollow inside, and the power assembly 2 and necessary connectors are placed inside. The button switch 14 is connected to the motor 21 of the power assembly 2. 13. Press the button switch 14 to open and close the motor 21 of the power unit to realize the grinding operation.

Working principle: when the arc grinding gun with adjustable arc is used, as shown in Figure 7, the flexible sand plate 44 of the adjustable arc grinding head is attached to the arc surface of the special-shaped workpiece 5. Under the extrusion of the arc-shaped surface, each piston rod is retracted to different lengths, and the bottom surface of the piston presses the spring 49, as shown in Figure 8, at this time, the air in the piston chamber 412 flows in from the ventilation hole, as shown in Figure 3, Through the air inlet port 45, air is input to each air chamber through the air inlet, as shown in Figure 4, the valve 46 is closed, and now the elastic force of the spring 49 and the pressure of the air in the air chamber reach a balance value, and the piston head 48 is fixed At the specific position of the piston chamber 412, since the piston head 48 is fixed, the protruding length of the piston rod is also fixed correspondingly, so the outer surface of the flexible sand plate 44 forms an arc consistent with the arc facade of the required grinding special-shaped workpiece 5 surface, hold the polishing gun again, press the button switch 14, and carry out the grinding operation to the arc-shaped facade of the special-shaped workpiece 5. After the grinding is completed, open the valve 46, and the air in the air cavity will flow in from the air outlet 415, and the pressure in the air cavity will drop. , the piston head 48 moves outward under the elastic force of the spring 49, and the piston rod elongates accordingly, returning to the state shown in Figure 5, with each piston rod protruding to the same length, and then the next arc-shaped facade is polished , repeat the above steps.

To sum up, the arc grinding gun with adjustable arc uses the flexible sand board 44 to fit the curved surface of the special-shaped workpiece 5 to be polished, and fixes the protruding length of each piston rod to fit the arc. The surface is reciprocatingly polished. By adjusting the length of each piston rod, the curved surface of the flexible sand board 44 is adjusted to adapt to curved surfaces with different radians. The applicability is stronger and the grinding efficiency is higher.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (3)

1. An arc grinding gun with adjustable arc, comprising a gun body (1), a power assembly (2) is arranged inside the gun body (1), and a grinding rod (3) is connected to the output end of the power assembly (2) ), the grinding rod (3) slides on the muzzle of the gun body (1), it is characterized in that: the end of the grinding rod (3) is connected with an adjustable arc grinding head (4), and the adjustable arc grinding head (4 ) includes a housing (41), an air inlet (45), and a valve (46), the upper end of the housing (41) is connected to the grinding rod (3), and several sets of linear Arranged air chamber (413) and piston chamber (412), the center of the air chamber (413) and piston chamber (412) is in a straight line, the piston head (48) is slidably connected in the piston chamber (412), the A piston rod (42) is connected to the outer end of the piston head (48), and a spring (49) is accommodated between the interior of the piston chamber (412) and the piston head (48), and the head of the piston rod (42) is connected to the top block (43) , the outer side of the top block (43) is connected with the flexible sand board (44), and the side wall of the air cavity (413) is provided with an air inlet (414) and an air outlet (415), and the air inlet (414) is connected with the inlet The air port (45) is connected, the air outlet (415) is connected to the valve (46), the piston head (48) is locked in the piston cavity (412) through the valve (46), and the gun body (1) Comprising an upper shell (11), a lower shell (12), a handle (13), and a gun head (15), the upper shell (11) and the lower shell (12) are matched, and the handle (13) is connected to the lower shell (12) One side of the bottom end, the handle (13) is provided with a button switch (14), the gun head (15) is located at the front end of the upper shell (11) and the lower shell (12), the power assembly ( 2) It includes a motor (21) and a cam (22), the motor (21) is placed in the handle (13), the output end of the motor (21) is connected to the eccentric position of the cam (22), and the cam (22) is close to The muzzle is connected with a grinding rod (3), and the top of the piston rod (42) is a round head (421), which is rollingly connected with the top block (43). 2. The arc grinding gun with adjustable radian according to claim 1, characterized in that: the front end of the air chamber (413) is also provided with a fixed block cavity (411), and the fixed block cavity (411) A fixed block (47) is fitted inside, and the piston rod (42) is slidably connected in the middle of the fixed block (47). 3. The arc grinding gun with adjustable radian according to claim 1, characterized in that: the surface of the piston head (48) is also sleeved with a sealing ring (481) to enhance air tightness.

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