Universal cylindrical grinding clamp

Abstract

The utility model relates to the technical field of clamps, and discloses a universal cylindrical grinding clamp which comprises a shell, a clamping base is fixedly connected to the interior of the shell, a sliding ring is connected to the exterior of the clamping base in a sliding mode, a plurality of pneumatic push rods are fixedly connected to the interior of the shell, a round bar is arranged in the clamping base, and the pneumatic push rods are fixedly connected to the interior of the shell. And a discharging assembly used for automatic discharging is arranged in the clamping base, a plurality of first sliding rods are slidably connected into the sliding ring, clamping inclined blocks are fixedly connected to the sides, close to each other, of the first sliding rods, and the first sliding rods are sleeved with first springs. According to the round bar clamping device, the sliding ring is driven by the pneumatic push rod to slide towards the left side, so that the sliding rods are pushed to slide towards the close side through the inner edge with the radian in the sliding ring, the outer portion of a round bar is clamped in the clamping base, and the round bars with different diameters can be clamped by adjusting the stroke of the pneumatic push rod; and the universality of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a universal cylindrical grinding clamp. Background Art

[0002] A cylindrical grinding fixture is a specialized fixture used in cylindrical grinding operations. Its primary function is to securely hold workpieces requiring external grinding, such as shafts and rods. During the grinding process, it ensures the workpiece's position is stable, preventing displacement or shaking. For example, when machining high-precision motor shafts, a cylindrical grinding fixture precisely secures the shaft to the grinder, allowing the grinding wheel to evenly grind the shaft's outer surface, ensuring the shaft meets precision requirements such as cylindricity.

[0003] In the prior art, some clamps utilize compressed air as a power source, generating clamping force through pneumatic components such as cylinders and pistons. When compressed air enters the cylinder, it pushes the piston, which in turn drives the clamping components to clamp the workpiece. When the compressed air is exhausted, the piston returns under the action of a spring or other reset device, releasing the workpiece. Pneumatic clamping offers advantages such as high clamping force, rapid action, and cleanliness, making it suitable for rapid clamping and loosening operations on automated production lines. However, in the prior art, some clamps have the same clamping force, which can easily lead to over-tightening or over-loosening of round rods of different diameters, resulting in low versatility. Therefore, a universal cylindrical grinding clamp has been proposed to address this issue. Utility Model Content

[0004] In order to make up for the above deficiencies, the present invention provides a universal cylindrical grinding fixture, aiming to improve the problem of low universality of some fixtures in the prior art.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A universal external cylindrical grinding fixture includes an outer shell, a clamping base is fixedly connected to the inside of the outer shell, a sliding ring is slidably connected to the outside of the clamping base, a plurality of pneumatic push rods are fixedly connected to the inside of the outer shell, a round rod is provided inside the clamping base, a blanking assembly for automatic blanking is provided inside the clamping base, a plurality of sliding rods are slidably connected to the inside of the sliding ring, a clamping bevel is fixedly connected to the adjacent side of the plurality of sliding rods, and a spring is provided on the outside of the sliding rod.

[0007] As a further description of the above technical solution:

[0008] The driving ends of the plurality of pneumatic push rods are fixedly connected to the rear side of the sliding ring, and the interior of the sliding ring is in contact with the far side of one of the plurality of sliding rods.

[0009] As a further description of the above technical solution:

[0010] One end of the spring 1 is fixedly connected to the outside of the clamping oblique block, and the other end of the spring 1 is fixedly connected to the inside of the clamping base.

[0011] As a further description of the above technical solution:

[0012] The outer portion of the housing is rotatably connected to a mounting plate, the inner portion of the mounting plate is threadedly connected to a plurality of bolts, and the outer portions of the bolts are threadedly connected to nuts.

[0013] As a further description of the above technical solution:

[0014] The blanking assembly includes a rack, the exterior of which is fixedly connected to the exterior of the driving end of one of the pneumatic push rods.

[0015] As a further description of the above technical solution:

[0016] The interior of the clamping base is slidably connected to a second sliding rod, the interior of the clamping base is fixedly connected to a catheter, and the exterior of the catheter is sheathed with a second spring.

[0017] As a further description of the above technical solution:

[0018] The interior of the clamping base is rotatably connected with a gear.

[0019] As a further description of the above technical solution:

[0020] The outer portion of the gear is meshed with the outer portion of the rack, and the outer portion of the gear is meshed with the inner portion of the second sliding rod.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the driving end of the pneumatic push rod extends to drive the sliding ring to slide to the left, thereby pushing multiple sliding rods to slide toward the adjacent side through the curved inner edge of the sliding ring, and finally driving multiple clamps to slide obliquely toward the adjacent side to clamp the outside of the round rod. Through the stroke of the pneumatic push rod, round rods of different diameters can be clamped, thereby improving the versatility of the equipment.

[0023] 2. In the utility model, when the driving end of the pneumatic push rod is extended, it drives the rack to slide, thereby driving the gear to rotate, and then drives the meshing sliding rod 2 to slide in the opposite direction, compressing the spring 2 on the rear side to generate elastic potential energy. After the clamping process is completed, the reaction force of the spring 2 drives the sliding rod 2 to slide to the right, pushing the round rod out from the inside of the clamping base, completing automatic unloading and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional diagram of the universal cylindrical grinding fixture proposed in the present utility model;

[0025] Figure 2 This is a schematic diagram of the shell structure of the universal cylindrical grinding fixture proposed in the present utility model;

[0026] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4 This is a schematic diagram of the clamping base structure of the universal cylindrical grinding fixture proposed in the utility model.

[0028] Legend:

[0029] 1. Mounting plate; 2. Bolt; 3. Nut; 4. Housing; 5. Round rod; 6. Pneumatic push rod; 7. Clamping base; 8. Sliding ring; 9. Clamping bevel block; 10. Sliding rod 1; 11. Spring 1; 12. Rack; 13. Gear; 14. Sliding rod 2; 15. Conduit; 16. Spring 2. DETAILED DESCRIPTION

[0030] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0031] Reference Figures 1 to 3The utility model provides an embodiment: a universal cylindrical grinding fixture, including a shell 4, which is usually made of a solid cast iron material. It not only provides space for installation and protection of various components inside, but also plays a role in supporting and fixing the entire fixture structure. The inside of the shell 4 is fixedly connected to a clamping base 7, which is an important part that directly contacts the workpiece and realizes the clamping function. A cylindrical hole groove is provided inside for placing raw materials. The outside of the clamping base 7 is slidably connected to a sliding ring 8. The inside of the sliding ring 8 is designed with a special arc-shaped inner edge. When the sliding ring 8 slides under the action of the pneumatic push rod 6, the arc-shaped inner edge inside can accurately guide the subsequent structure to move in a similar direction for clamping. The inside of the shell 4 is fixedly connected to a plurality of pneumatic push rods 6, which are composed of a cylinder, a piston and a piston rod. The cylinder portion is fixed inside the housing 4. The entry and exit of compressed air pushes the piston to perform linear motion within the cylinder, thereby driving the piston rod to extend or retract. A round rod 5 is provided inside the clamping base 7. The round rod 5 serves as the workpiece to be machined. During the machining process, the round rod 5 needs to maintain a stable position to ensure the accuracy and quality of the cylindrical grinding. A blanking assembly for automatic blanking is provided inside the clamping base 7. Multiple sliding rods 10 are slidably connected to the interior of the sliding ring 8. One end of the sliding rod 10 is rounded and contacts the curved inner edge of the sliding ring 8. A clamping bevel 9 is fixedly connected to the adjacent sides of the multiple sliding rods 10. The clamping bevel 9 is typically wedge-shaped, with its inclined surface conforming to the outer surface of the round rod 5, providing greater friction and stable support during clamping. A spring 11 is provided on the exterior of the sliding rod 10. The spring 11 is typically a compression spring that serves to reset and provide a buffering force.

[0032] Reference Figures 2 to 3 The driving ends of multiple pneumatic push rods 6 are fixedly connected to the rear side of the sliding ring 8. The interior of the sliding ring 8 contacts the far side of multiple sliding rods 10. One end of spring 11 is fixedly connected to the outside of the clamping wedge 9, and the other end of spring 11 is fixedly connected to the inside of the clamping base 7. When the pneumatic push rods 6 push the sliding ring 8 to cause the clamping wedge 9 to clamp the round rod 5, spring 11 is compressed, storing elastic potential energy. After processing is completed, when the driving force of the pneumatic push rods 6 disappears and the sliding ring 8 slides backward, the elastic reaction force of spring 11 pushes the sliding rods 10 and the clamping wedge 9 to slide toward the far side, achieving the release and reset operation.

[0033] Reference Figure 1The outer part of the shell 4 is rotationally connected with the mounting plate 1, when the mounting plate 1 is fixed, the inner part of the shell 4 rotates relatively, then the inner clamping mechanism rotates to process, the inner part of the mounting plate 1 is screw-connected with the plurality of bolts 2, the outer part of the bolt 2 is screw-connected with the nut 3, the nut 3 is used in cooperation with the bolt 2, and is an important component for tightly fixing the mounting plate 1, and is used for fixedly mounting the whole clamp.

[0034] Referring to Figure 4 The blanking assembly comprises a rack 12, the outer part of the rack 12 is fixedly connected with the driving end of one of the pneumatic push rods 6, the rack 12 is provided with uniformly distributed teeth on the upper surface, the rack 12 is driven to slide by the driving end of the pneumatic push rod 6, the inner part of the clamping base 7 is slidably connected with a sliding rod two 14, the sliding rod two 14 is pushed by the elastic structure, then the sliding rod two 14 pushes the round bar 5 to slide, and the blanking is completed, the inner part of the clamping base 7 is fixedly connected with a guide pipe 15, the main function of the guide pipe 15 is to provide a stable support and guide for the subsequent elastic structure. The outer part of the guide pipe 15 is sleeved with a spring two 16, the elastic reaction force of the spring two 16 pushes the sliding rod two 14 to slide to the other side, pushes the round bar 5 out of the inner part of the clamping base 7, and the automatic blanking operation is completed. The inner part of the clamping base 7 is rotationally connected with a gear 13, the outer part of the gear 13 is engaged with the outer part of the rack 12, and the outer part of the gear 13 is engaged with the inner part of the sliding rod two 14. The function of the gear 13 is to act as an intermediate transmission component, and convert the linear motion of the rack 12 into the reverse sliding linear motion of the sliding rod two 14.

[0035] Working principle: first, the round bar 5 is placed in the inner part of the clamping base 7, the power switches of the plurality of pneumatic push rods 6 are turned on, the driving end of the pneumatic push rod 6 is extended to drive the sliding ring 8 to slide to the left side, then the inner edge with the arc in the inner part of the sliding ring 8 pushes the plurality of sliding rods one 10 to slide to the similar side, stretches the spring one 11 in the inner part, and finally drives the plurality of clamping inclined blocks 9 to slide to the similar side, clamps the outer part of the round bar 5, and then rotates the shell 4 in the inner part of the mounting plate 1 to perform rotary processing. After the processing is completed, the sliding ring 8 is retracted by sliding to the rear side, loses the extrusion force on the sliding rod one 10, at this time, the elastic reaction force of the spring one 11 pulls the clamping inclined block 9 to slide to the far side, completes the reset, and is ready for the next clamping. It has good universality. For the round bar 5 with different diameters, only the stroke of the pneumatic push rod 6 needs to be appropriately adjusted, so that reliable clamping can be realized, and the use cost and limitation of the equipment are reduced.

[0036] Secondly, when the driving end of the pneumatic push rod 6 is extended, the sliding of the rack 12 drives the gear 13 to rotate, thereby driving the meshing sliding rod 2 14 to slide in the opposite direction, compressing the spring 2 16 on the rear side to generate elastic potential energy. After the clamping process is completed, the reaction force of the spring 2 16 drives the sliding rod 2 14 to slide to the right, and the round rod 5 is pushed out from the inside of the clamping base 7. After the processing is completed, there is no need to manually remove the round rod 5. The reaction force of the spring 2 16 can automatically push the sliding rod 2 14 to push the round rod 5 out of the clamping base 7, saving the unloading time, making the entire production process more coherent and efficient, realizing the automatic unloading function, and greatly improving the production efficiency.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A universal cylindrical grinding fixture, comprising a housing (4), characterized in that: The interior of the housing (4) is fixedly connected to a clamping base (7), the exterior of the clamping base (7) is slidably connected to a sliding ring (8), the interior of the housing (4) is fixedly connected to a plurality of pneumatic push rods (6), the interior of the clamping base (7) is provided with a round rod (5), the interior of the clamping base (7) is provided with a blanking assembly for automatic blanking, the interior of the sliding ring (8) is slidably connected to a plurality of sliding rods (10), the adjacent sides of the plurality of sliding rods (10) are fixedly connected to a clamping bevel block (9), and the exterior of the sliding rod (10) is provided with a spring (11).

2. The universal cylindrical grinding fixture according to claim 1, characterized in that: The driving ends of the plurality of pneumatic push rods (6) are fixedly connected to the rear side of the sliding ring (8), and the interior of the sliding ring (8) contacts the far side of the plurality of sliding rods (10).

3. The universal cylindrical grinding fixture according to claim 1, characterized in that: One end of the spring 1 (11) is fixedly connected to the outside of the clamping bevel (9), and the other end of the spring 1 (11) is fixedly connected to the inside of the clamping base (7).

4. The universal cylindrical grinding fixture according to claim 1, characterized in that: The outer portion of the housing (4) is rotatably connected to a mounting plate (1), the inner portion of the mounting plate (1) is threadedly connected to a plurality of bolts (2), and the outer portions of the bolts (2) are threadedly connected to nuts (3).

5. The universal cylindrical grinding fixture according to claim 1, characterized in that: The blanking assembly comprises a rack (12), the exterior of which is fixedly connected to the exterior of a driving end of one of the pneumatic push rods (6).

6. The universal cylindrical grinding fixture according to claim 5, characterized in that: The interior of the clamping base (7) is slidably connected to a second sliding rod (14), the interior of the clamping base (7) is fixedly connected to a conduit (15), and the exterior of the conduit (15) is sheathed with a second spring (16).

7. The universal cylindrical grinding fixture according to claim 6, characterized in that: The interior of the clamping base (7) is rotatably connected to a gear (13).

8. The universal cylindrical grinding fixture according to claim 7, characterized in that: The outside of the gear (13) is meshed with the outside of the rack (12), and the outside of the gear (13) is meshed with the inside of the second sliding rod (14).

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