Mechanical clamp for lathe machining casting

Abstract

The utility model discloses a mechanical clamp for lathe machining of castings, which relates to the technical field of machining equipment and comprises a clamping drive disc and a clamping drive assembly, one end of the clamping drive assembly is provided with a bearing pressure plate, and one side, far away from the clamping drive assembly, of the bearing pressure plate is fixedly connected with a pressure bearing gasket. According to the clamping device, the bearing adsorption block, the first magnetic attraction block, the buffer gasket, the second magnetic attraction block, the insertion limiting column, the bearing pressing plate and the arc-shaped clamping block are used in cooperation, so that when the device clamps the cylindrical casting, the outer wall of the cylindrical casting can be evenly stressed, the problem of deformation caused by local stress is avoided, and the machining efficiency is improved. And through cooperative use of a buffer spring, a bearing adsorption block, a first magnetic attraction block, a second magnetic attraction block and an insertion limiting column, arc-shaped clamping blocks can be rapidly and conveniently disassembled and assembled, then the arc-shaped clamping blocks of different specifications can be conveniently replaced to adapt to different cylindrical castings, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of processing equipment, in particular to a mechanical clamp used for processing castings on a lathe. Background Art

[0002] A lathe is a machine tool that mainly uses a turning tool to turn a rotating workpiece. Drills, reamer drills, reamers, taps, dies and knurling tools can also be used on the lathe for corresponding processing.

[0003] A machine tool fixture is a device used to clamp workpieces and guide cutting tools on machine tools. It refers to a fixture specially designed for a certain process of a certain workpiece. It is characterized by compact structure, quick, convenient and labor-saving operation, and can ensure high processing accuracy and production efficiency.

[0004] However, when the existing mechanical clamp is locked, the bolt needs to be rotated at the same time to achieve the purpose of locking the processed object. However, this increases the work process and reduces the work efficiency.

[0005] A Chinese patent with publication number CN208961025U has been proposed in the prior art to solve the above-mentioned technical problems. The technical solution disclosed in the patent document is as follows: a mechanical clamp for lathe processing castings, comprising a first shell, the interior of the first shell is a hollow structure, and a circular groove is opened on the top of the first shell, a placement plate is welded on the bottom of the inner wall of the circular groove, a circular ring slide is opened on the bottom of the first shell, a rotating disk is slidably connected inside the circular ring slide, a first notch is opened on the outside of the placement plate, the number of the first notches is three, slides are opened on both sides of the inner wall of the first notch, a first sliding plate is slidably connected in the slide, a first spiral tube is welded on the other side of the first sliding plate, a slide is opened on the top of the placement plate, and a second sliding plate is slidably connected in the slide. In summary, this utility model improves the efficiency of clamping objects, whether it is clamping or releasing the workpiece, it is simple and convenient, improves work efficiency, and ensures the excellent rate of processed objects.

[0006] Although the above-mentioned prior art can improve the efficiency of clamping objects, when processing cylindrical castings, using a three-jaw chuck for clamping can easily cause the cylindrical castings to deform, affecting the accuracy of workpiece processing and causing the workpiece to be scrapped. Utility Model Content

[0007] The purpose of the utility model is to provide a mechanical fixture for lathe machining castings to solve the problems raised in the above background technology.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0009] A mechanical clamp for lathe processing castings includes a clamping drive disk and a clamping drive assembly, a receiving pressure plate is provided at one end of the clamping drive assembly, a pressure gasket is fixedly connected to the receiving pressure plate on the side away from the clamping drive assembly, a receiving hole is provided on one side of the pressure gasket, a plug-in limit column is inserted into the inner wall of the receiving hole, and an arc-shaped clamping block for clamping the casting is fixedly connected to one end of the plug-in limit column.

[0010] The arc-shaped clamping block is provided with an arc groove for fitting with the outer wall of the casting on one side away from the plug-in limiting column, and the receiving pressure plate is fixedly connected with a plug-in limiting cylinder for limiting the plug-in limiting column on one side away from the pressure-bearing gasket.

[0011] The internal movable connection of the plug-in limit cylinder is provided with a limit assembly for magnetically limiting the plug-in limit column. The limit assembly includes a receiving adsorption block, a buffer spring for resetting the receiving adsorption block and a first magnetic block. One end of the plug-in limit column is fixedly connected with a second magnetic block.

[0012] A further improvement of the technical solution of the utility model is that a spring installation groove for installing the buffer spring is opened on the inner wall of the plug-in limit cylinder, the outer wall of the buffer spring is movably connected to the inner wall of the spring installation groove, and one end of the buffer spring is fixedly connected to the inner wall of one end of the spring installation groove.

[0013] A further improvement of the technical solution of the utility model is that one end of the buffer spring is fixedly connected to a side of the receiving adsorption block away from the first magnetic block, and a buffer gasket is fixedly connected to a side of the first magnetic block away from the receiving adsorption block.

[0014] A further improvement of the technical solution of the utility model is that the sides of the first magnetic block and the second magnetic block that are close to each other form a magnetic attraction state.

[0015] A further improvement of the technical solution of the utility model is that the receiving hole is communicated with one end of the plug-in limiting cylinder, and the outer wall of the plug-in limiting column is plugged with the interior of the plug-in limiting cylinder.

[0016] A further improvement of the technical solution of the utility model is that an auxiliary arc groove is provided on a side of the pressure-bearing gasket away from the receiving pressure plate.

[0017] A further improvement of the technical solution of the utility model is that: a side of the pressure-bearing gasket away from the receiving pressure plate overlaps a side of the arc-shaped clamping block.

[0018] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0019] 1. The utility model provides a mechanical clamp for lathe processing castings, which utilizes the coordinated use of a receiving adsorption block, a first magnetic block, a buffer gasket, a second magnetic block, a plug-in limit column, a receiving pressure plate and an arc-shaped clamping block, so that when the device clamps the cylindrical casting, the outer wall of the cylindrical casting can be evenly stressed, thereby avoiding the problem of deformation caused by local stress.

[0020] 2. The utility model provides a mechanical clamp for lathe processing castings, which utilizes the coordinated use of a buffer spring, a receiving adsorption block, a first magnetic block, a second magnetic block and a plug-in limit column to enable the arc-shaped clamping block to be quickly and conveniently disassembled and installed, thereby facilitating the replacement of arc-shaped clamping blocks of different specifications to suit different cylindrical castings, thereby improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the clamping drive assembly of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the clamping drive disk of the utility model;

[0023] Figure 3 This is a schematic diagram of the structural details of the plug-in limit cylinder of the utility model;

[0024] Figure 4 It is an enlarged schematic diagram of the structure at A of the utility model;

[0025] Figure 5 It is a schematic diagram of the structure of the plug-in limit column of the utility model.

[0026] In the figure: 1. Clamping drive disk; 2. Clamping drive assembly; 3. Arc-shaped clamping block; 4. Receiver pressure plate; 5. Pressure-bearing gasket; 6. Insertion limit column; 7. Receiver hole; 8. Plug-in limit cylinder; 9. Buffer spring; 10. Receiver adsorption block; 11. First magnetic block; 12. Buffer gasket; 13. Second magnetic block; 14. Spring mounting groove. DETAILED DESCRIPTION

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The present invention is further described in detail below in conjunction with the embodiments:

[0029] Example 1

[0030] like Figure 1-5 As shown, the utility model provides a mechanical clamp for lathe processing castings, including a clamping drive disk 1 and a clamping drive assembly 2, a receiving pressure plate 4 is provided at one end of the clamping drive assembly 2, a pressure plate 4 is fixedly connected to the side of the receiving pressure plate 4 away from the clamping drive assembly 2, a pressure gasket 5 is fixedly connected, a receiving hole 7 is opened on one side of the pressure gasket 5, a plug-in limit column 6 is inserted into the inner wall of the receiving hole 7, and an arc-shaped clamping block 3 for clamping the casting is fixedly connected to one end of the plug-in limit column 6.

[0031] An arc groove for fitting with the outer wall of the casting is formed on the side of the arc clamping block 3 away from the plug-in limiting column 6, and a plug-in limiting cylinder 8 for limiting the plug-in limiting column 6 is fixedly connected to the side of the pressure plate 4 away from the pressure gasket 5.

[0032] The internal movable connection of the plug-in limit cylinder 8 is provided with a limit assembly for magnetically limiting the plug-in limit column 6. The limit assembly includes a receiving adsorption block 10, a buffer spring 9 for resetting the receiving adsorption block 10 and a first magnetic block 11. One end of the plug-in limit column 6 is fixedly connected with a second magnetic block 13.

[0033] The inner wall of the plug-in limit cylinder 8 is provided with a spring installation groove 14 for installing the buffer spring 9. The outer wall of the buffer spring 9 is movably connected to the inner wall of the spring installation groove 14. One end of the buffer spring 9 is fixedly connected to the inner wall of one end of the spring installation groove 14.

[0034] One end of the buffer spring 9 is fixedly connected to the side of the receiving adsorption block 10 away from the first magnetic block 11, and the side of the first magnetic block 11 away from the receiving adsorption block 10 is fixedly connected with a buffer gasket 12. When the plug-in limit column 6 moves toward the first magnetic block 11, it will squeeze the buffer gasket 12, and at this time, the buffer gasket 12 will be used for buffering. At the same time, during the installation process of the plug-in limit column 6, the buffer gasket 12 is used to block and buffer the first magnetic block 11 and the second magnetic block 13, avoiding impact damage caused by direct adsorption of the two, and extending the service life of the two.

[0035] The sides of the first magnetic block 11 and the second magnetic block 13 that are close to each other form a magnetic state. When the arc clamping block 3 needs to be disassembled and replaced, it is pulled to the side away from the receiving pressure plate 4. When the applied pulling force is greater than the magnetic attraction force between the receiving adsorption block 10 and the second magnetic block 13, the plug-in limit column 6 can be pulled out of the plug-in limit cylinder 8, so that the arc clamping block 3 can be removed, and the reverse operation can be performed when installing.

[0036] Example 2

[0037] like Figure 1-5As shown, based on Example 1, the utility model provides a technical solution: preferably, the receiving hole 7 is connected to one end of the plug-in limit tube 8, and the outer wall of the plug-in limit column 6 is plugged into the interior of the plug-in limit tube 8.

[0038] An auxiliary arc groove is provided on the side of the pressure-bearing gasket 5 away from the receiving pressure plate 4, and the side of the pressure-bearing gasket 5 away from the receiving pressure plate 4 overlaps with one side of the arc clamping block 3. When the clamping drive assembly 2 pushes the receiving pressure plate 4 to drive the arc clamping block 3 to move closer to the cylindrical casting, the arc clamping block 3 is forced to push the plug-in limit column 6 to compress the buffer spring 9, and when the cylindrical casting is clamped, the buffer spring 9 pushes the plug-in limit column 6 to reset through the reset force, and at this time, a certain gap will be left between the receiving pressure plate 4 and the arc clamping block 3, and the subsequent replacement of the arc clamping block 3 is convenient through the gap and the auxiliary arc groove.

[0039] The following is a detailed description of the working principle of the mechanical fixture used for lathe processing castings.

[0040] like Figure 1-5 As shown, during use, when it is necessary to clamp the cylindrical casting, the corresponding arc-shaped clamping block 3 is docked and installed with the receiving pressure plate 4, and the plug-in limit column 6 is docked with the receiving hole 7, and then the plug-in limit column 6 is inserted from the receiving hole 7 into the plug-in limit tube 8. When the second magnetic block 13 contacts the buffer gasket 12, the first magnetic block 11 and the second magnetic block 13 form magnetic adsorption to limit the plug-in limit column 6, and the installation is completed.

[0041] Then, the clamping drive assembly 2 pushes the receiving pressure plate 4 to drive the arc clamping block 3 to fit the outer wall of the cylindrical casting and form an annular clamping state, so that the outer wall of the cylindrical casting is evenly stressed to avoid local deformation due to stress.

[0042] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A mechanical fixture for lathe machining castings, comprising a clamping drive disc (1) and a clamping drive assembly (2), characterized in that: A receiving pressure plate (4) is provided at one end of the clamping drive assembly (2), a pressure-bearing gasket (5) is fixedly connected to the side of the receiving pressure plate (4) away from the clamping drive assembly (2), a receiving hole (7) is provided on one side of the pressure-bearing gasket (5), a plug-in limit column (6) is inserted into the inner wall of the receiving hole (7), and an arc-shaped clamping block (3) for clamping the casting is fixedly connected to one end of the plug-in limit column (6); The arc-shaped clamping block (3) is provided with an arc groove for fitting with the outer wall of the casting on the side away from the plug-in limiting column (6), and the receiving pressure plate (4) is fixedly connected with a plug-in limiting cylinder (8) for limiting the plug-in limiting column (6) on the side away from the pressure-bearing gasket (5); The plug-in limit cylinder (8) is internally movably connected with a limit assembly for magnetically limiting the plug-in limit column (6), the limit assembly comprising a receiving adsorption block (10), a buffer spring (9) for resetting the receiving adsorption block (10) and a first magnetic block (11), and one end of the plug-in limit column (6) is fixedly connected with a second magnetic block (13).

2. A mechanical fixture for lathe machining castings according to claim 1, characterized in that: The inner wall of the plug-in limiting cylinder (8) is provided with a spring installation groove (14) for installing the buffer spring (9); the outer wall of the buffer spring (9) is movably connected to the inner wall of the spring installation groove (14); and one end of the buffer spring (9) is fixedly connected to the inner wall of one end of the spring installation groove (14).

3. A mechanical fixture for lathe machining castings according to claim 1, characterized in that: One end of the buffer spring (9) is fixedly connected to a side of the receiving adsorption block (10) away from the first magnetic block (11), and a buffer gasket (12) is fixedly connected to a side of the first magnetic block (11) away from the receiving adsorption block (10).

4. A mechanical fixture for lathe machining castings according to claim 1, characterized in that: The sides of the first magnetic attraction block (11) and the second magnetic attraction block (13) that are close to each other form a magnetic attraction state.

5. A mechanical fixture for lathe machining castings according to claim 1, characterized in that: The receiving hole (7) is in communication with one end of the plug-in limiting cylinder (8), and the outer wall of the plug-in limiting column (6) is plugged into the interior of the plug-in limiting cylinder (8).

6. A mechanical fixture for lathe machining castings according to claim 1, characterized in that: An auxiliary arc groove is provided on the side of the pressure-bearing gasket (5) away from the receiving pressure plate (4).

7. A mechanical fixture for lathe machining castings according to claim 1, characterized in that: The side of the pressure-bearing gasket (5) away from the receiving pressure plate (4) overlaps with one side of the arc-shaped clamping block (3).

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