A special-shaped workpiece clamping device for numerical control machine tool

Abstract

This utility model relates to the field of CNC machine tool technology, specifically a clamping device for irregularly shaped workpieces used in CNC machine tools. The device includes a main body containing a worktable, clamping components, and a lifting component. Lower support plates are provided on both sides of the worktable. Two sets of lifting components are installed on the upper part of the lower support plates. Two sets of clamping components are respectively connected to the upper part of the lifting components. Each clamping component includes a telescopic rod and a clamping plate. A mounting base is fixed to the front end of the telescopic rod, and the clamping plate is fixed within the mounting base. Three sets of fan-shaped clamping blocks are rotatably arranged at the front end of the clamping plate. An insertion slot is provided on the inner side of the mounting base, and an insertion rod is provided on the outer side of the clamping plate. The insertion rod is correspondingly connected to the insertion slot. This device can clamp and fix irregularly shaped workpieces of different sizes and specifications, and allows for convenient assembly and disassembly of the clamping plate, facilitating its removal and replacement, thus improving the applicability and flexibility of the device.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, and in particular to a clamping device for irregularly shaped workpieces for CNC machine tools. Background Technology

[0002] A CNC machine tool is an automated machine tool equipped with a program control system. Its control system can logically process coded instructions and control the machining process through digital programming to automatically complete operations such as cutting, drilling, and milling of parts. CNC machine tools require a clamping device to be used.

[0003] The utility model patent with publication number CN212683190U in the prior art proposes a workpiece clamping device for CNC machine tools. Its telescopic mechanism is electrically controlled, and the telescopic rod has a relatively long length, which can effectively clamp the workpiece when it is placed. Moreover, the clamping device has a wide range of applications and can adapt to workpieces of various sizes and types. Therefore, it is not necessary to replace the clamping body during production and processing.

[0004] However, its clamping end is designed as a planar structure, which makes it unable to effectively clamp irregularly shaped workpieces, unable to effectively fit with irregularly shaped workpieces, and difficult to ensure clamping stability. This can easily lead to workpiece slippage and displacement during machine tool processing. The installation and disassembly of the clamp is also not convenient and quick, and worn clamps are not easy to replace and maintain. Therefore, we need to upgrade and modify the existing technology to overcome the existing problems and shortcomings. Utility Model Content

[0005] The purpose of this invention is to provide a clamping device for irregularly shaped workpieces in CNC machine tools, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] Design a clamping device for irregular workpieces for CNC machine tools, including a device body, which includes a worktable, a clamping assembly and a lifting assembly. The worktable is provided with lower support plates on both sides. Two sets of lifting assemblies are provided and installed on the upper end of the lower support plates. Two sets of clamping assemblies are provided and respectively connected to the upper end of the lifting assembly.

[0008] The clamping assembly includes a telescopic rod and a clamping plate. The front end of the telescopic rod is fixed with a mounting base, and the clamping plate is fixed inside the mounting base. The front end of the clamping plate is rotatably provided with three sets of fan-shaped clamping blocks, and the front end of the fan-shaped clamping blocks is provided with protective pads.

[0009] Preferably, the lifting assembly includes a fixing plate fixed to the lower support plate, a threaded sleeve fixed to the fixing plate, a threaded rod screwed to the upper end of the threaded sleeve and a support plate fixed to the top of the threaded rod, and the support plate fixed to the lower end of the telescopic rod.

[0010] Preferably, the mounting base has an insertion groove on its inner side, and the clamp plate has an insertion rod on its outer side. The insertion rod is connected to the insertion groove. The clamp plate and the mounting base have corresponding connection holes, and a connecting bolt is fixed in the connection hole.

[0011] Preferably, guide seats are fixed on both sides of the telescopic rod, and guide rods are movably inserted into the guide seats, with the front end of the guide rods fixedly connected to the outer end of the mounting base.

[0012] Preferably, two sets of positioning sleeves are symmetrically arranged on the fixing plate, and a positioning rod is movably inserted into the positioning sleeve. The top of the positioning rod is fixedly connected to the lower end of the support plate.

[0013] Preferably, the upper end of the threaded sleeve is rotatably provided with a worm wheel and a worm, and the worm wheel and the worm mesh with each other, and the upper end of the threaded rod is threaded through and screwed to the center position of the worm wheel.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model includes a clamping assembly, a telescopic rod, a mounting base, a plug-in slot, a clamping plate, a plug-in rod, a connecting hole, a connecting bolt, a sector-shaped clamping block, a protective pad, a guide seat, and a guide rod. The telescopic rod drives the mounting base and clamping plate to move back and forth, and the clamping plate drives the sector-shaped clamping block to move accordingly and clamp the workpiece. It can clamp and fix irregularly shaped workpieces of different sizes and specifications. The plug-in rod and plug-in slot allow the clamping plate to be inserted vertically, and the connecting hole and connecting bolt lock it in place. This allows for convenient assembly and disassembly of the clamping plate, facilitating its removal and replacement and improving the flexibility of the device.

[0016] 2. This utility model incorporates a lifting assembly, a fixed plate, a threaded sleeve, a worm gear, a worm, a threaded rod, a support plate, a positioning sleeve, and a positioning rod. The worm drives the worm gear to rotate, which in turn drives the threaded rod to move up and down within the threaded sleeve, thereby raising and lowering the support plate accordingly. This allows for height adjustment of the clamping assembly, facilitating the processing requirements of workpieces of different heights or suspended workpieces. This further enhances the adaptability of the equipment, avoids the problem of poor clamping stability caused by workpiece height mismatch, and improves the practicality of the equipment.

[0017] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications, and equivalents. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure according to the present utility model;

[0020] Figure 2 This is a schematic diagram of the adjustment state according to the present invention;

[0021] Figure 3 An exploded view of the clamping assembly according to this utility model;

[0022] Figure 4 This is an exploded view of the lifting assembly according to the present invention.

[0023] In the diagram: 1. Device body; 2. Workbench; 21. Lower support plate; 3. Clamping assembly; 31. Telescopic rod; 32. Mounting base; 33. Insertion slot; 34. Clamping plate; 35. Insertion rod; 36. Connecting hole; 37. Connecting bolt; 38. Fan-shaped clamping block; 39. Protective pad; 310. Guide seat; 311. Guide rod; 4. Lifting assembly; 41. Fixing plate; 42. Threaded sleeve; 43. Worm gear; 44. Worm; 45. Threaded rod; 46. Support plate; 47. Positioning sleeve; 48. Positioning rod. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figure 1 As shown in Figure 4, this embodiment provides a clamping device for irregularly shaped workpieces for CNC machine tools, including a device body 1. The device body 1 includes a worktable 2, a clamping assembly 3 and a lifting assembly 4. Lower support plates 21 are provided on both sides of the worktable 2. Two sets of lifting assemblies 4 are provided and installed on the upper end of the lower support plates 21. Two sets of clamping assemblies 3 are provided and respectively connected to the upper end of the lifting assembly 4.

[0026] In this embodiment, the clamping assembly 3 includes a telescopic rod 31 and a clamping plate 34. A mounting base 32 is fixed to the front end of the telescopic rod 31, and the clamping plate 34 is fixed within the mounting base 32. Three sets of fan-shaped clamping blocks 38 are rotatably arranged at the front end of the clamping plate 34, and protective pads 39 are provided at the front ends of the fan-shaped clamping blocks 38. A insertion groove 33 is provided on the inner side of the mounting base 32, and an insertion rod 35 is provided on the outer side of the clamping plate 34. The insertion rod 35 is correspondingly connected to the insertion groove 33. Connection holes 36 are correspondingly opened on the clamping plate 34 and the mounting base 32, and connecting bolts 37 are fixed within the connection holes 36. Guide seats 310 are fixed on both sides of the telescopic rod 31, and guide rods 311 are movably inserted into the guide seats 310. The front end of the rod 311 is fixedly connected to the outer end of the mounting base 32. The mounting base 32 and the clamping plate 34 are driven to move back and forth by the telescopic rod 31. The guide rod 311 provides stable guidance. The clamping plate 34 drives the fan-shaped clamping block 38 to move and clamp the workpiece. It can clamp and fix irregular workpieces of different sizes and specifications, which is convenient for machine tool processing and improves the applicability of the device. The clamping plate 34 is inserted into the upper and lower parts by the insertion rod 35 and the insertion slot 33, and locked by the connection hole 36 and the connection bolt 37. It can easily disassemble and install the clamping plate 34, making it easy to remove and replace the clamping plate 34 and improving the flexibility of the device.

[0027] In this embodiment, the lifting assembly 4 includes a fixing plate 41 fixed on the lower support plate 21. A threaded sleeve 42 is fixed on the fixing plate 41. A threaded rod 45 is screwed to the upper end of the threaded sleeve 42, and a support plate 46 is fixed to the top of the threaded rod 45. The support plate 46 is fixed to the lower end of the telescopic rod 31. Two sets of positioning sleeves 47 are symmetrically arranged on the fixing plate 41. A positioning rod 48 is movably inserted into the positioning sleeve 47. The top of the positioning rod 48 is fixedly connected to the lower end of the support plate 46. A worm gear 43 and a worm 44 are rotatably arranged on the upper end of the threaded sleeve 42, and the worm gear 43 and the worm 44 are meshed. The upper end of the threaded rod 45 is threaded through and screwed to the center of the worm gear 43. The rotation of the worm 44 is controlled by an external knob. The worm 44 drives the worm gear 43 to rotate, and the worm gear 43 drives the threaded rod 45 to move up and down within the threaded sleeve 42. This, in turn, drives the support plate 46 to move up and down. The support plate 46 drives the clamping assembly 3 to move up and down, which can realize the height adjustment of the clamping assembly 3. This makes it easy to adapt to the processing requirements of workpieces of different heights or suspended workpieces, further improving the adaptability of the equipment, avoiding the problem of poor clamping stability caused by workpiece height mismatch, and improving the practicality of the equipment.

[0028] The working principle and process of this utility model are as follows: When in use, the workpiece can be placed in the middle of the workbench 2. The worm gear 44 is rotated by the external knob. The worm gear 44 drives the worm wheel 43 to rotate. The worm wheel 43 drives the threaded rod 45 to move up and down in the threaded sleeve 42, which in turn drives the support plate 46 to move up and down. The support plate 46 drives the clamping assembly 3 to move up and down, so that the height of the clamping plate 34 is consistent with the workpiece. The mounting base 32 and the clamping plate 34 are driven to move back and forth by the telescopic rod 31. The guide rod 311 provides stable guidance. The clamping plate 34 drives the fan-shaped clamping block 38 to move and clamp the workpiece. The operation is simple and convenient. When it is necessary to disassemble the clamping plate 34, the connecting bolt 37 can be removed and the clamping plate 34 can be pulled out from the insertion slot 33 through the insertion rod 35.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

Claims

1. A clamping device for irregularly shaped workpieces used in CNC machine tools, characterized in that: The device includes a main body (1), which contains a workbench (2), a clamping assembly (3) and a lifting assembly (4). The workbench (2) has a lower support plate (21) on both sides. The lifting assembly (4) has two sets and is installed on the upper end of the lower support plate (21). The clamping assembly (3) has two sets and is respectively connected to the upper end of the lifting assembly (4). The clamping assembly (3) includes a telescopic rod (31) and a clamping plate (34). The front end of the telescopic rod (31) is fixed with a mounting base (32), and the clamping plate (34) is fixed inside the mounting base (32). The front end of the clamping plate (34) is rotatably provided with three sets of fan-shaped clamping blocks (38), and the front end of the fan-shaped clamping blocks (38) is provided with a protective pad (39).

2. The clamping device for irregularly shaped workpieces in CNC machine tools according to claim 1, characterized in that: The lifting assembly (4) includes a fixing plate (41) fixed on the lower support plate (21), a threaded sleeve (42) fixed on the fixing plate (41), a threaded rod (45) screwed to the upper end of the threaded sleeve (42), and a support plate (46) fixed to the top of the threaded rod (45), and the support plate (46) fixed to the lower end of the telescopic rod (31).

3. The clamping device for irregularly shaped workpieces in CNC machine tools according to claim 1, characterized in that: The mounting base (32) has an insertion groove (33) on its inner side, and the clamp (34) has an insertion rod (35) on its outer side. The insertion rod (35) is connected to the insertion groove (33). The clamp (34) and the mounting base (32) have corresponding connection holes (36), and a connecting bolt (37) is fixed in the connection hole (36).

4. The clamping device for irregularly shaped workpieces in CNC machine tools according to claim 1, characterized in that: The telescopic rod (31) has guide seats (310) fixed on both sides, and a guide rod (311) is movably inserted into the guide seat (310). The front end of the guide rod (311) is fixedly connected to the outer end of the mounting base (32).

5. A clamping device for irregularly shaped workpieces in a CNC machine tool according to claim 2, characterized in that: Two sets of positioning sleeves (47) are symmetrically provided on the fixed plate (41). A positioning rod (48) is movably inserted into the positioning sleeve (47). The top of the positioning rod (48) is fixedly connected to the lower end of the support plate (46).

6. A clamping device for irregularly shaped workpieces in CNC machine tools according to claim 2, characterized in that: The upper end of the threaded sleeve (42) is rotatably provided with a worm wheel (43) and a worm (44) and the worm wheel (43) and the worm (44) mesh with each other. The upper end of the threaded rod (45) is threaded through and screwed to the center position of the worm wheel (43).

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