Pneumatic swing machine with multi-purpose clamping structure

Abstract

The utility model discloses a kind of pneumatic swing machines with multi-purpose clamping structure, including swing bar and clamping mechanism, the swing bar includes main body part and two clamps at one end of main body part, the gap is between two described clamps, two described clamps are opened with arc slot on one side, the first through -hole is passed through and opened in the main body part, the gap is communicated with first through -hole, when different polishing tool is needed to assemble and use, the one end of polishing bar or file is inserted into arc slot in alignment, or the oilstone sheet is inserted into first through -hole in alignment gap and inserts, adjust clamping mechanism again, make it drive one or two clamps deformation, make gap reduce, guarantee arc slot inner wall and polishing bar or file or oilstone sheet closely and clamp it, to complete the quick fixing to polishing bar or file or oilstone sheet, when polishing bar or file or oilstone sheet is installed and replaced, additional chuck is not needed to replace and install and use, avoid the trouble of repeatedly disassembling chuck when replacing different polishing tool.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic rocking machine technology, and in particular to a pneumatic rocking machine with a multi-purpose clamping structure. Background Technology

[0002] Pneumatic grinding machines come in various types and have advantages such as small size, high grinding efficiency, low noise and low vibration. They are not prone to fatigue even after long-term use. Pneumatic grinding machines are suitable for surface grinding of iron plates, wood, plastics, tires, fine polishing, deburring, rust removal, paint removal and other operations in the shipbuilding, automotive, abrasive and aerospace industries.

[0003] Existing pneumatic rocking machines typically include a housing, a fisheye bearing and guide sleeve installed inside the housing, and a rocker arm (the fisheye bearing is fitted onto the outer surface of the rocker arm). When in use, a chuck needs to be bolted to the front end of the rocker arm to allow for the installation of a file, which is cumbersome to assemble. Furthermore, changing to different grinding tools, such as grinding rods or oilstones, requires repeated disassembly and assembly, which is very troublesome. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a pneumatic rocking machine with a multi-purpose clamping structure, which solves the problem that existing pneumatic rocking machines require a clamp to be bolted to the front end of the rocking rod for the installation of a file, which is troublesome to assemble and requires repeated disassembly and assembly to change different grinding tools such as grinding rods or oilstones.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a pneumatic swing machine with a multi-purpose clamping structure, comprising:

[0006] The swing arm includes a main body and two clamping plates disposed at one end of the main body. There is a gap between the two clamping plates. An arc-shaped groove is opened on the opposite side of each of the two clamping plates. A first through hole is opened through the main body. The gap communicates with the first through hole.

[0007] A clamping mechanism for driving at least one clamping plate to deform in order to reduce the gap size.

[0008] Preferably, the clamping mechanism includes a sleeve and a screw. The sleeve is sleeved around the two clamping plates. At least one screw hole is opened on the outer surface of the sleeve. One end of the screw passes through the screw hole and abuts against the clamping plate to deform the clamping plate.

[0009] Preferably, at least one of the clamping plates has a flat groove on its outer surface, and when the sleeve is located around the clamping plate, the screw hole is directly opposite the flat groove.

[0010] Preferably, the pneumatic rocking machine includes a front shell, a fisheye bearing is fixed inside the front shell, the inner ring of the fisheye bearing is fixed to the rocking rod, and one end of the clamping plate extends out of the front shell.

[0011] Preferably, the main body includes a boss post with a stepped surface. A slot is provided on the outer surface of the boss post, and a retaining spring is provided in the slot. When the fisheye bearing is fixed on the rocker arm, the two sides of the inner ring of the fisheye bearing contact the stepped surface and the retaining spring, respectively.

[0012] Preferably, the main body further includes a lever, which includes two stops. A rear shell is detachably fixed to one end of the front shell. A guide sleeve is provided inside the front shell. The guide sleeve is located on the periphery of the main body. There are gaps between the symmetrical sides of the inner wall of the guide sleeve and the outer wall of the main body. A cylinder is provided inside the rear shell. The cylinder includes a rotor. An eccentric block is fixedly installed at one end of the rotor. A bearing is provided on the outer surface of the eccentric block. Both sides of the outer surface of the bearing are in contact with a stop. An air intake rod is provided at one end of the rear shell.

[0013] Compared with the prior art, the beneficial effects that this utility model can achieve are:

[0014] When different polishing tools need to be assembled, align one end of the polishing rod or file with the arc groove and insert it, or align the whetstone with the gap and insert it into the first through hole. Then adjust the clamping mechanism to cause one or two clamping plates to deform, reducing the gap and ensuring that the inner wall of the arc groove is tightly clamped to the polishing rod, file, or whetstone. This completes the quick fixing of the polishing rod, file, or whetstone. When installing or replacing the polishing rod, file, or whetstone, there is no need to replace or use additional chucks, avoiding the trouble of repeatedly disassembling and assembling chucks when changing different polishing tools. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the pneumatic rocking machine of this utility model;

[0016] Figure 2 This is a schematic diagram of the rocker arm, sleeve, and screw structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the first cross-sectional structure of the swing arm of this utility model;

[0018] Figure 4 This is a schematic diagram of the second cross-sectional structure of the swing arm of this utility model;

[0019] Figure 5 This utility model Figure 1 Cross-sectional structural diagram;

[0020] Figure 6 This utility model Figure 5 Schematic diagram of the structure at point A in the middle;

[0021] Figure 7 This is a schematic diagram of the cross-sectional structure of the guide sleeve and the rocker arm of this utility model;

[0022] The components are as follows: 1. Front housing; 101. Mounting hole; 2. Fisheye bearing; 3. Rocker arm; 301. First through hole; 31. Boss; 311. Slot; 32. Clamping plate; 321. Flat groove; 322. Arc groove; 33. Toggle lever; 331. Stop block; 4. Sleeve; 41. Second through hole; 42. Screw hole; 5. Screw; 6. Snap ring; 7. Guide sleeve; 8. Cylinder; 81. Rotor; 9. Eccentric block; 10. Intake rod; 11. Rear housing. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model is further described below in conjunction with specific embodiments. However, the following embodiments are only preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of this utility model.

[0024] like Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides a pneumatic rocking machine with a multi-purpose clamping structure, including a rocking rod 3 and a clamping mechanism;

[0025] The swing arm 3 includes a main body and two clamping plates 32 located at one end of the main body. The main body and the clamping plates 32 are integrally formed. There is a gap between the two clamping plates 32. Each of the two clamping plates 32 has an arc-shaped groove 322 on one side facing each other. The main body has a first through hole 301 through it. The gap is connected to the first through hole 301.

[0026] The clamping mechanism is used to drive at least one clamping plate 32 to deform in order to shorten the gap size (wherein the distance between the two clamping plates 32 in the undeformed state is greater than the diameter of the circular grinding rod or the diameter of the circular mounting part of the file or the thickness of the whetstone, to ensure the normal insertion and installation of the grinding tool).

[0027] When different polishing tools (round polishing rods, files, or whetstones) need to be assembled and used, align one end of the polishing rod or file with the arc groove 322 and insert it, or align the whetstone with the gap and insert it into the first through hole 301 (the specific insertion depth of the whetstone can be adjusted as needed for greater applicability). Then adjust the clamping mechanism to cause one or two clamping plates 32 to deform, thereby reducing the gap and ensuring that the inner wall of the arc groove 322 is tightly attached to the polishing rod, file, or whetstone, thus quickly fixing the polishing rod, file, or whetstone. When installing or replacing the polishing rod, file, or whetstone, there is no need to replace or use additional chucks, avoiding the trouble of repeatedly disassembling and assembling chucks when changing different polishing tools.

[0028] Specifically, such as Figure 2 , Figure 3 and Figure 4 As shown, the clamping mechanism includes a sleeve 4 and a screw 5. The sleeve 4 is sleeved around the two clamping plates 32. At least one screw hole 42 is opened on the outer surface of the sleeve 4. One end of the screw 5 passes through the screw hole 42 and abuts against the clamping plate 32 to deform the clamping plate 32.

[0029] The sleeve 4 has a second through hole 41. When the sleeve 4 is sleeved around the two clamping plates 32, the outer wall of the clamping plate 32 is not completely in contact with the inner wall of the second through hole 41, which ensures that the sleeve 4 is quickly sleeved around the clamping plate 32, and the clamping plate 32 will not deform when the screw 5 is not used.

[0030] Before changing the grinding tool, the sleeve 4 is already fitted around the clamping plate 32. When the grinding tool is inserted into the arc groove 322 or the first through hole 301, the screw 5 is rotated and gradually screwed into the screw hole 42 until the screw 5 abuts against the clamping plate 32 and causes it to deform, so that the two clamping plates 32 can quickly clamp and fix the grinding tool.

[0031] like Figure 2 As shown, at least one clamping plate 32 has a flat groove 321 on its outer surface. When the sleeve 4 is located around the clamping plate 32, the screw hole 42 is directly opposite the flat groove 321.

[0032] By setting the flat groove 321, the contact area between the screw 5 and the clamping plate 32 is increased, thereby reducing the pressure of the screw 5 on the clamping plate 32 and reducing the probability of crushing the clamping plate 32.

[0033] like Figure 1 , Figure 5 and Figure 6 As shown, the pneumatic rocking machine includes a front shell 1, which has a mounting hole 101. A fisheye bearing 2 is fixed inside the front shell 1. The inner ring of the fisheye bearing 2 is fixed to the rocking rod 3, ensuring that the rocking rod 3 can rotate around the connection between it and the inner ring of the fisheye bearing 2. One end of the clamping plate 32 extends out of the front shell 1, and the part extending out of the front shell 1 is convenient for fitting the sleeve 4.

[0034] like Figure 2 and Figure 6 As shown, the main body includes a boss post 31, the boss post 31 has a stepped surface, the outer surface of the boss post 31 is provided with a slot 311, and a retaining spring 6 is provided in the slot 311. When the fisheye bearing 2 is fixed on the rocker arm 3, the two sides of the inner ring of the fisheye bearing 2 are in contact and fit with the stepped surface and the retaining spring 6 respectively.

[0035] When assembling and fixing the fisheye bearing 2 and the rocker arm 3, after the fisheye bearing 2 is installed and fixed, the rocker arm 3 is inserted through the mounting hole 101, so that the clamping plate 32 passes through the fisheye bearing 2 until the stepped surface of the boss 31 contacts and fits against one side of the inner ring of the fisheye bearing 2. Then, the retaining spring 6 is used to slip from one end of the clamping plate 32 and lock it into the retaining groove 311. At this time, the retaining spring 6 contacts and fits against the other side of the inner ring of the fisheye bearing 2, thus completing the quick and detachable fixing of the fisheye bearing 2 and the rocker arm 3. When a component is damaged, it is convenient to disassemble and replace it, and it ensures that there is no relative slippage between the rocker arm 3 and the fisheye bearing 2, thereby ensuring the stability of the swing trajectory of the rocker arm 3.

[0036] like Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the main body also includes a lever 33, which includes two stops 331. A rear shell 11 is detachably fixed to one end of the front shell 1. A guide sleeve 7 is provided inside the front shell 1. The guide sleeve 7 is located on the periphery of the main body and plays a limiting role in the swing of the lever 3. There are gaps between the symmetrical sides of the inner wall of the guide sleeve 7 and the outer wall of the main body. A cylinder 8 is provided inside the rear shell 11. The cylinder 8 includes a rotor 81. An eccentric block 9 is fixedly installed at one end of the rotor 81. A bearing is provided on the outer surface of the eccentric block 9. Both sides of the outer surface of the bearing are in contact with a stop 331. An air inlet rod 10 is provided at one end of the rear shell 11.

[0037] When the rocker arm 3 needs to swing, air is intake through the air intake rod 10, which drives the rotor 81 to rotate. The rotor 81 drives the eccentric block 9 to rotate eccentrically, and the eccentric block 9 drives the bearing to rotate eccentrically. Because there is a gap between the symmetrical sides of the inner wall of the guide sleeve 7 and the outer wall of the main body of the rocker arm 3 (e.g. Figure 7 As shown), each stop 331 is directly opposite a gap, so that the bearing only drives the swing rod 3 to swing back and forth in the direction perpendicular to the stop 331 during the eccentric swing process. That is, the swing rod 3 swings with its connection with the fisheye bearing 2 as the fulcrum. Specifically, the grinding tool is fixed by the clamping plate 32 and the clamping mechanism of the swing rod 3 to realize the grinding work.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pneumatic swing machine with a multi-purpose clamping structure, characterized in that, include: The swing arm (3) includes a main body and two clamping plates (32) located at one end of the main body. There is a gap between the two clamping plates (32). An arc-shaped groove (322) is provided on one side of each of the two clamping plates (32). A first through hole (301) is provided through the main body. The gap is connected to the first through hole (301). A clamping mechanism for driving at least one clamping plate (32) to deform to reduce the gap size.

2. The pneumatic swing machine with a multi-purpose clamping structure according to claim 1, characterized in that: The clamping mechanism includes a sleeve (4) and a screw (5). The sleeve (4) is sleeved around the two clamping plates (32). At least one screw hole (42) is opened on the outer surface of the sleeve (4). One end of the screw (5) passes through the screw hole (42) and abuts against the clamping plate (32) to deform the clamping plate (32).

3. The pneumatic rocking machine with a multi-purpose clamping structure according to claim 2, characterized in that: At least one of the clamping plates (32) has a flat groove (321) on its outer surface. When the sleeve (4) is located around the clamping plate (32), the screw hole (42) is directly opposite the flat groove (321).

4. The pneumatic swing machine with a multi-purpose clamping structure according to claim 1, characterized in that: The pneumatic rocking machine includes a front shell (1), a fisheye bearing (2) is fixed inside the front shell (1), the inner ring of the fisheye bearing (2) is fixed to the rocking rod (3), and one end of the clamping plate (32) extends out of the front shell (1).

5. The pneumatic swing machine with a multi-purpose clamping structure according to claim 4, characterized in that: The main body includes a boss (31), the boss (31) has a stepped surface, the outer surface of the boss (31) is provided with a slot (311), the slot (311) is provided with a retaining spring (6), when the fisheye bearing (2) is fixed on the rocker arm (3), the inner ring of the fisheye bearing (2) is in contact with the stepped surface and the retaining spring (6) on both sides respectively.

6. The pneumatic rocking machine with a multi-purpose clamping structure according to claim 5, characterized in that: The main body also includes a lever (33), which includes two stops (331). A rear shell (11) is detachably fixed to one end of the front shell (1). A guide sleeve (7) is provided inside the front shell (1). The guide sleeve (7) is located on the periphery of the main body. There are gaps between the inner walls of the guide sleeve (7) and the outer walls of the main body on both sides. A cylinder (8) is provided inside the rear shell (11). The cylinder (8) includes a rotor (81). An eccentric block (9) is fixedly installed at one end of the rotor (81). A bearing is provided on the outer surface of the eccentric block (9). Both sides of the outer surface of the bearing are in contact with a stop (331). An air intake rod (10) is provided at one end of the rear shell (11).

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