Floating clamping and feeding device for grinding center hole of part

Abstract

The utility model relates to the technical field of mechanical part machining, and discloses a floating clamping feeding device for grinding a center hole of a part, which comprises a support, a part clamping mechanism, a positioning mechanism and a floating block, the positioning mechanism is arranged in the sliding cavity and used for limiting the floating block, and the part clamping mechanism is fixedly connected with the floating block. The device has the advantages that during feeding, the positioning mechanism fixes the floating block, at the moment, the position of the part clamping mechanism is fixed, feeding is facilitated, during grinding, the positioning air cylinder is released, the floating block can freely move within a small range in a plane, but the floating block cannot rotate under the limitation of the sliding cavity, a part can be made to adapt to a machining tool bit, and the machining efficiency is improved. Automatic alignment of the grinding center hole is achieved, meanwhile, danger caused by rotation of parts can be prevented, and floating and fixing of the floating block can be freely switched through the positioning mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical parts processing, in particular to a floating clamping and feeding device for grinding a center hole of a part. Background Art

[0002] During the part processing, the center hole grinding requires a high degree of coaxiality accuracy. The horizontal center hole grinding will be affected by gravity. When the center hole is ground vertically, the part needs to be clamped with a clamp to avoid the part rotating during the center hole grinding and causing safety accidents.

[0003] In the prior art, a clamp is usually used to fix the part to prevent the part from shifting or rotating. However, during the process of grinding the center hole of the part, the processing reference will be changed under the clamping action of the clamp, affecting the coaxiality of the grinding center hole.

[0004] The Chinese utility model patent with the authorization announcement number CN220560601U discloses a floating clamping tool for shaft parts, including a base, a force transmission mechanism, a top, a clamping cover and a jacket; the force transmission mechanism is slidably mounted on the base for connecting with a power source; the top is mounted on the base for abutting against the end face of the workpiece; the clamping cover is connected to the force transmission mechanism; the jacket is provided with a clamping space of adjustable size, and the jacket is slidably mounted on the base; the clamping cover is connected to the jacket, and the clamping cover is used to press the jacket under the drive of the force transmission mechanism to reduce the clamping space, so that the jacket clamps the workpiece. This application is only applicable to the clamping of shaft parts, and the scope of application is relatively small; and during the center hole grinding process, if the center hole of the part is offset, this application cannot be adaptively adjusted. Utility Model Content

[0005] The utility model aims to solve the problem that the center hole of a part cannot be automatically aligned when it is fixedly ground, which affects the coaxiality of the center hole. In view of the above-mentioned shortcomings of the prior art, a floating clamping and feeding device for grinding the center hole of a part is proposed.

[0006] A floating clamping and feeding device for grinding the center hole of a part comprises a bracket, a part clamping mechanism, a positioning mechanism and a floating block. The bracket is provided with a sliding cavity. The floating block can be horizontally slidably arranged in the sliding cavity. The positioning mechanism is arranged in the sliding cavity to limit the floating block. The part clamping mechanism is fixedly connected to the floating block.

[0007] By adopting the above technical solution: the bracket is fixed in the machining center of the grinding center hole, the machining center adopts a vertical grinding center hole, and when loading, the positioning mechanism fixes the floating block. At this time, the position of the part clamping mechanism is fixed, which is convenient for loading. After the part to be processed is fixed on the clamping mechanism, the grinding head of the machining center is coaxial with the center hole to be processed on the part; during the grinding process, the positioning mechanism is loosened, and the floating block can slide in the sliding cavity, but the floating block cannot rotate due to the limitation of the sliding cavity, so that the part can adapt to the processing head and realize automatic alignment of the grinding center hole, while preventing the danger caused by the rotation of the part.

[0008] The above technical solution is further configured as follows: the bracket includes an upper plate, a lower plate and a mounting plate, the sliding cavity is surrounded by the upper plate, the lower plate and the mounting plate, and the upper and lower surfaces of the floating block are slidably connected to the upper and lower plates respectively.

[0009] By adopting the above technical solution: the upper plate, the lower plate and the mounting plate are combined to form a sliding cavity, and the floating block is clearance-matched with the sliding cavity and can slide along the horizontal plane in the sliding cavity.

[0010] The above technical solution is further configured as follows: the positioning mechanism includes two V-shaped positioning blocks slidably connected to the bracket, and a positioning cylinder driving the V-shaped positioning blocks to move closer to or away from each other, the two V-shaped positioning blocks are symmetrically arranged, and the floating block is provided with a V-shaped groove for the V-shaped positioning blocks to be embedded in.

[0011] By adopting the above technical solution: when loading, the positioning cylinder drives the V-shaped positioning blocks to move closer to each other, so that the V-shaped positioning blocks are embedded in the V-shaped groove of the floating block, and the position of the floating block can be fixed, which is convenient for loading; when processing parts, the positioning cylinder drives the two V-shaped positioning blocks to move away from each other, so that the V-shaped positioning blocks are separated from the V-shaped groove of the floating block, which is convenient for the floating block to move on the horizontal plane.

[0012] The above technical solution is further configured as follows: the positioning pin includes a positioning pin vertically arranged in the sliding cavity, and the floating block is provided with a through hole for the positioning pin to pass through, and the diameter of the through hole is larger than the diameter of the positioning pin. The diameter of the through hole is slightly larger than the diameter of the positioning pin, so that the floating block can slide slightly within the gap between the through hole and the positioning pin, thereby realizing automatic alignment of the center hole of the part.

[0013] By adopting the above technical solution: a through hole is provided on the floating block, and a positioning pin is provided in the through hole. The positioning pin can limit the sliding range of the floating block, so that the floating block can slide in a small range in the gap between the through hole and the positioning pin, thereby preventing the floating block from escaping from the sliding cavity and realizing precise processing of the center hole.

[0014] The above technical solution is further configured as follows: two limit plates are provided on the lower flat plate, the two limit plates are located on both sides of the floating block, and a sliding gap along the Y direction is provided between the limit plates and the floating block.

[0015] The above technical solution is further configured as follows: a sliding gap is provided between the floating block and the mounting plate along the X direction.

[0016] By adopting the above technical solution, the limiting plate can further limit the moving range of the floating block.

[0017] The above technical solution is further configured as follows: the bracket includes a base plate, the positioning cylinder is fixedly connected to the base plate, the output shaft of the positioning cylinder is fixedly connected to the bottom of the V-shaped positioning block, a V-shaped hole is provided on the lower plate, and the V-shaped positioning block passes through the V-shaped hole and is located in the sliding cavity.

[0018] The above technical solution is further configured as follows: the bracket also includes two parallel side panels, the side walls of the side panels are fixedly connected to the mounting plate, and an upper flat plate, a lower flat plate and a bottom plate are fixed in sequence from top to bottom on adjacent surfaces of the two side panels.

[0019] By adopting the above technical solution, the side plate connects the upper plate, the lower plate, the bottom plate and the mounting plate together to form a stable bracket. The positioning cylinder is fixedly connected to the bottom plate to drive the V-shaped positioning block to move. The structure is compact and occupies a small area.

[0020] The above technical solution is further configured as follows: the part clamping mechanism includes two symmetrically arranged clamping fingers and a clamping cylinder driving the clamping fingers to move closer to or away from each other; one end of the floating block passes through the sliding cavity and is fixedly connected to the part clamping mechanism.

[0021] The above technical solution is further configured as follows: V-shaped grippers are symmetrically provided on two adjacent sides of the two clamping fingers.

[0022] By adopting the above technical solution, the clamping cylinder clamps the parts by controlling the clamping fingers, and the V-shaped gripper can accurately position the parts.

[0023] Beneficial effects of the utility model:

[0024] 1. When loading, the positioning mechanism fixes the floating block. At this time, the position of the part clamping mechanism is fixed, which is convenient for loading. After the part to be processed is fixed on the clamping mechanism, the grinding head of the machining center is coaxial with the center hole to be processed on the part; during the grinding process, the positioning mechanism is loosened, and the floating block can slide in the sliding cavity, but the floating block cannot rotate due to the limitation of the sliding cavity, so that the part can adapt to the processing head and realize automatic alignment of the grinding center hole. At the same time, it can prevent the danger caused by the rotation of the part. The floating and fixing of the floating block can be freely switched through the positioning mechanism.

[0025] 2. When loading and unloading, the positioning cylinder is clamped, and the device as a whole is rigid, and the part clamping center remains unchanged, ensuring that the center line of the part is coaxial with the grinding center. When grinding, the positioning cylinder is released, and the floating block can move arbitrarily in a small range within the plane, which is convenient for the part to move arbitrarily in the radial plane when the center rotates during grinding, which can improve the coaxiality of the two center holes of the part.

[0026] 3. The sliding cavity and the floating block are used to limit the rotational freedom and the up and down movement freedom in three directions, so that the floating block slides only along the plane direction. The structure is simple and can realize automatic alignment of the processed parts during the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the utility model.

[0028] Figure 2 Schematic diagram of the internal structure of the positioning mechanism.

[0029] Figure 3 for Figure 2 An enlarged schematic diagram of point A.

[0030] Figure 4 It is a side schematic diagram of the utility model.

[0031] In the figure, 1. bracket; 101. mounting plate; 102. upper plate; 103. lower plate; 104. bottom plate; 105. side plate; 2. floating block; 3. clamping mechanism; 301. clamping finger; 302. clamping cylinder; 303. V-shaped gripper; 4. positioning mechanism; 401. V-shaped positioning block; 402. positioning cylinder; 5. positioning pin; 6. through hole; 7. V-shaped groove; 8. limit plate; 9. V-shaped hole. DETAILED DESCRIPTION

[0032] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0033] Example 1

[0034] A floating clamping feeding device for grinding the center hole of a part, such as Figure 1 , Figure 2As shown, the bracket 1 includes a mounting plate 101, an upper plate 102 and a lower plate 103 are fixedly connected to the mounting plate 101, the lower surface of the upper plate 102, the upper surface of the lower plate 103 and the side of the mounting plate 101 form a sliding cavity, a floating block 2 is slidably connected in the sliding cavity, the upper surface and the lower surface of the floating block 2 are slidably connected to the upper plate 102 and the lower plate 103 respectively, a part clamping mechanism 3 is provided at one end of the floating block 2, and a positioning mechanism 4 is provided at the other end.

[0035] The bracket 1 is fixed in the machining center for grinding the center hole. The machining center adopts vertical grinding of the center hole. When loading, the positioning mechanism 4 fixes the floating block 2. At this time, the position of the part clamping mechanism 3 is fixed, which is convenient for loading. After the part to be processed is fixed on the clamping mechanism 3, the grinding head of the machining center is coaxial with the center hole to be processed on the part; during the grinding process, the positioning mechanism 4 is loosened, and the upper plate 102, the lower plate 103 and the mounting plate 101 are enclosed to form a sliding cavity. The floating block 2 is matched with the sliding cavity gap and can slide along the horizontal plane in the sliding cavity. However, the floating block 2 cannot rotate under the restriction of the sliding cavity, which can make the part adaptive to the processing head and realize automatic alignment of the grinding center hole, while preventing the danger caused by the rotation of the part.

[0036] Example 2

[0037] like Figure 3 As shown, the positioning mechanism 4 includes two V-shaped positioning blocks 401 slidably connected to the bracket 1, and the bracket 1 is provided with a positioning cylinder 402 for driving the V-shaped positioning blocks 401 to move closer to or away from each other. The two V-shaped positioning blocks 401 are symmetrically arranged, and the floating block 2 is provided with a V-shaped groove 7 for the V-shaped positioning blocks 401 to be embedded.

[0038] When loading, the positioning cylinder 402 moves the V-shaped positioning blocks 401 closer to each other, so that the V-shaped positioning blocks 401 are embedded in the V-shaped groove 7 of the floating block 2, so that the position of the floating block 2 can be fixed. In the process of the V-shaped blocks being embedded in the V-shaped groove, the floating blocks can be accurately returned to their original positions through the inclined surfaces, which is convenient for loading. When processing parts, the positioning cylinder 402 drives the two V-shaped positioning blocks 401 away from each other, so that the V-shaped positioning blocks 401 are separated from the V-shaped groove 7 of the floating block 2, which is convenient for the floating block 2 to move on the horizontal plane.

[0039] Example 3

[0040] like Figure 3As shown, a positioning pin 5 is vertically provided in the sliding cavity, and a through hole 6 is provided on the floating block 2 for the positioning pin 5 to pass through, and the diameter of the through hole 6 is larger than the diameter of the positioning pin 5. The floating block 2 is provided with a through hole 6, and a positioning pin 5 is provided in the through hole 6. The positioning pin 5 can limit the sliding range of the floating block 2, so that the floating block 2 can slide in a small range in the gap between the through hole 6 and the positioning pin 5, thereby preventing the floating block 2 from falling out of the sliding cavity and realizing accurate processing of the center hole.

[0041] Example 4

[0042] like Figure 3 As shown, two limit plates 8 are provided on the lower plate 103, and the two limit plates 8 are located on both sides of the floating block 2. A sliding gap along the Y direction is provided between the limit plates 8 and the floating block 2, and a sliding gap along the X direction is provided between the floating block 2 and the mounting plate 101. The limit plates 8 can further limit the moving range of the floating block 2.

[0043] Example 5

[0044] like Figure 2 As shown in the figure, the bracket 1 also includes a bottom plate 104, a positioning cylinder 402 is fixedly connected to the bottom plate 104, the output shaft of the positioning cylinder 402 is fixedly connected to the bottom of the V-shaped positioning block 401, and a V-shaped hole 9 is provided on the lower plate 103, which is located in the sliding cavity. The bracket 1 also includes two parallel side plates 105, the side walls of the side plates 105 are fixedly connected to the mounting plate 101, and the upper plate 102, the lower plate 103 and the bottom plate 104 are fixed on the adjacent surfaces of the two side plates 105 from top to bottom.

[0045] The side plate 105 connects the upper plate 102, the lower plate 103, the bottom plate 104 and the mounting plate 101 together to form a stable bracket 1. The positioning cylinder 402 is fixedly connected to the bottom plate 104 to drive the V-shaped positioning block 401 to move. The structure is compact and occupies a small area.

[0046] Example 6

[0047] like Figure 1 As shown, the part clamping mechanism 3 includes two symmetrically arranged clamping fingers 301, a clamping cylinder 302 driving the clamping fingers 301 to move closer or farther from each other, and one end of the floating block 2 passes through the sliding cavity and is fixedly connected to the part clamping mechanism 3. V-shaped grippers 303 are symmetrically arranged on the adjacent sides of the two clamping fingers 301. The clamping cylinder controls the clamping fingers 301 to clamp the parts, and the V-shaped grippers 303 can accurately position the parts.

[0048] For matters not mentioned above, the prior art applies.

[0049] Although some specific embodiments of the utility model have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the utility model. Those skilled in the art of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, but they will not deviate from the direction of the utility model or exceed the scope defined by the attached claims. Those skilled in the art should understand that any modification, equivalent replacement, improvement, etc. made to the above implementation methods based on the technical essence of the utility model should be included in the protection scope of the utility model.

Claims

1. A floating clamping and feeding device for grinding the center hole of a part, characterized in that: The invention comprises a bracket (1), a part clamping mechanism (3), a positioning mechanism (4) and a floating block (2); the bracket (1) is provided with a sliding cavity, the floating block is arranged in the sliding cavity so as to be horizontally slidable, the positioning mechanism (4) is arranged in the sliding cavity for limiting the position of the floating block (2), and the part clamping mechanism (3) is fixedly connected to the floating block (2).

2. The floating clamping and feeding device for center hole grinding of parts according to claim 1 is characterized in that: The bracket (1) comprises an upper plate (102), a lower plate (103) and a mounting plate (101); the sliding cavity is surrounded by the upper plate (102), the lower plate (103) and the mounting plate (101); the upper surface and the lower surface of the floating block (2) are respectively slidably connected to the upper plate (102) and the lower plate (103).

3. The floating clamping and feeding device for center hole grinding of parts according to claim 2 is characterized in that: The positioning mechanism (4) comprises two V-shaped positioning blocks (401) slidably connected to the bracket (1), and a positioning cylinder (402) for driving the V-shaped positioning blocks (401) to move closer to or farther from each other. The two V-shaped positioning blocks (401) are symmetrically arranged, and the floating block (2) is provided with a V-shaped groove (7) for the V-shaped positioning blocks (401) to be embedded.

4. The floating clamping and feeding device for grinding the center hole of a part according to claim 3 is characterized in that: It also comprises a positioning pin (5) vertically arranged in the sliding cavity, and the floating block (2) is provided with a through hole (6) for the positioning pin (5) to pass through, and the diameter of the through hole (6) is larger than the diameter of the positioning pin (5).

5. The floating clamping and feeding device for grinding the center hole of a part according to claim 2 is characterized in that: Two limit plates (8) are provided on the lower flat plate (103), the two limit plates (8) are located on both sides of the floating block (2), and a sliding gap along the Y direction is provided between the limit plates (8) and the floating block (2).

6. The floating clamping and feeding device for center hole grinding of parts according to claim 2 is characterized in that: A sliding gap along the X direction is provided between the floating block (2) and the mounting plate (101).

7. The floating clamping and feeding device for center hole grinding of parts according to claim 3 is characterized in that: The bracket (1) comprises a base plate (104), the positioning cylinder (402) is fixedly connected to the base plate (104), the output shaft of the positioning cylinder (402) is fixedly connected to the bottom of the V-shaped positioning block (401), the lower plate (103) is provided with a V-shaped hole (9), and the V-shaped positioning block (401) passes through the V-shaped hole (9) and is located in the sliding cavity.

8. The floating clamping and feeding device for grinding the center hole of a part according to claim 7 is characterized in that: The bracket (1) further comprises two side panels (105) parallel to each other, the side walls of the side panels (105) being fixedly connected to the mounting plate (101), and an upper flat plate (102), a lower flat plate (103) and a bottom plate (104) being fixed in sequence from top to bottom on adjacent surfaces of the two side panels (105).

9. The floating clamping and feeding device for center hole grinding of parts according to claim 1 is characterized in that: The part clamping mechanism (3) comprises two symmetrically arranged clamping fingers (301) and a clamping cylinder (302) for driving the clamping fingers (301) to move closer to or further away from each other. One end of the floating block (2) passes through the sliding cavity and is fixedly connected to the part clamping mechanism (3).

10. The floating clamping and feeding device for grinding the center hole of a part according to claim 9, characterized in that: V-shaped gripping claws (303) are symmetrically provided on two adjacent sides of the two clamping fingers (301).

Images