U-shaped detachable numerical control lathe center frame

Abstract

The utility model relates to the technical field of lathe machining, in particular to a U-shaped detachable numerical control lathe center frame which comprises a base, an upper support, a lower support and a limiting locking device, the base is arranged in the middle of the bottom end of the lower support, the upper support is arranged at the top end of the lower support, and the limiting locking device is arranged on the upper support. The two ends of the upper support are correspondingly and detachably connected with the two sides of the top end of the lower support, a U-shaped notch is formed in the middle end of the lower support, limiting through holes are formed in the two sides of the lower end of the U-shaped notch and the middle of the lower end of the upper support, and a limiting locking device is arranged in each through hole. Through the arrangement of the upper support and the lower support, the part containing space in the U-shaped frame body is increased, clamping of various types of parts can be achieved, the mode that the U-shaped structure is combined with the limiting device can enable the center frame to be suitable for machined parts of various structures and various sizes, and the machining efficiency is improved. And meanwhile, all structural parts are designed to be movably connected to achieve the purpose of quick assembly and disassembly, and the machining efficiency of a workshop is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe processing, in particular to a U-shaped detachable CNC lathe center frame. Background Art

[0002] When a lathe processes some longer shaft parts, in order to reduce the vibration amplitude of the workpiece, prevent the workpiece from deformation, and reduce the negative impact of the lathe cutting force, tooling is needed to assist in processing. A center frame is usually used as an auxiliary support to support and guide the workpiece. There are many types of lathe center frames on the market. Each center frame is divided into multiple models, and the support diameter is divided into multiple specifications such as 30 to 300 mm. For large-scale mechanical processing companies, purchasing multiple models of center frames will also increase cost investment, and the process of finding and installing different workpieces will also cause a waste of time and cost. Therefore, the utility model proposes an adjustable CNC lathe center frame.

[0003] Currently, most lathe center frames use an integrated structure. Although it ensures processing stability, it is heavy, time-consuming and labor-intensive to use and install, and inconvenient to disassemble during maintenance, which affects the processing efficiency of the lathe. In addition, the existing center frame has large restrictions on the size of the workpiece. Utility Model Content

[0004] The utility model aims to provide a U-shaped detachable CNC lathe center frame to solve the above technical problems.

[0005] The utility model is implemented as follows: a U-shaped detachable CNC lathe center frame comprises a base, an upper support, a lower support and a limit locking device, wherein the base is arranged in the middle of the bottom end of the lower support, the upper support is arranged at the top end of the lower support, and the two ends of the upper support are detachably connected to the two sides of the top end of the lower support, a U-shaped notch is opened in the middle end of the lower support, and limit through holes are opened on both sides of the lower end of the U-shaped notch and the middle of the lower end of the upper support, and a limit locking device is provided in each of the through holes.

[0006] Furthermore, each of the limit locking devices includes a sleeve, a top block, a screw, a connecting plate and a sleeve. The connecting plate is arranged at the outer opening of each through hole, and the connecting plate is connected to the outer opening wall of the through hole by bolts. The sleeve is arranged on the inner wall of the through hole, the screw is arranged in the sleeve, and the rear end of the screw passes through the middle end of the connecting plate and is rotatably connected to the connecting plate. The sleeve is arranged at the rear end of the screw, the top block is arranged at the inner opening of the through hole, and the outer end of the top block is arranged in the sleeve and is slidably connected to the sleeve. The front end of the screw is arranged in the middle of the outer end of the top block and is rotatably connected to the corresponding thread of the top block. Three sets of limit locking devices are arranged on the support. The position of the screw is adjusted by a cylindrical pin to press the connecting plate. The three top blocks cooperate to firmly fix the workpiece in the center position, which can effectively reduce the vibration of the workpiece during processing.

[0007] Furthermore, a tightening assembly is provided on one side of the middle end of each through hole, and each of the tightening assemblies includes a cylindrical pin and a positioning rod, one end of the positioning rod passes through the upper support and the lower support and is arranged in the through hole, and the positioning rod is correspondingly connected to the upper support and the lower support, and the other end of the positioning rod is provided with a cylindrical pin. The tightening assembly is more convenient to operate during the positioning process by providing the cylindrical pin and the positioning rod. By rotating the cylindrical pin so that the end of the positioning rod is against the bottom of the screw, the vibration amplitude of the positioning rod can be reduced, the positioning effect is achieved, and the locking device is more stable.

[0008] Furthermore, both sides of the upper end of the lower support are provided with movable bolts, and the lower end of each movable bolt is rotatably connected to the lower support. Both sides of the upper support are provided with slots, and each movable bolt is correspondingly arranged in the slots, and a nut is arranged at the top of each movable bolt. The upper support and the lower support of the U-shaped frame are connected by movable bolts and nuts, which overcomes the disadvantage of the previous center frame being connected by welding, making the disassembly and assembly operations more convenient and quick.

[0009] Furthermore, a cylindrical pin is provided at the bottom end of each screw.

[0010] Furthermore, a convex clamping block is provided at the bottom end of the base, and the convex clamping block is correspondingly connected to the middle end of the base through connecting bolts.

[0011] Compared with the prior art, the utility model is a U-shaped detachable CNC lathe center frame. By arranging an upper support and a lower support, the space for accommodating parts inside the U-shaped frame is increased, and clamping of various types of parts can be achieved. The combination of the U-shaped structure and the limit device can make the center frame suitable for processing parts of various structures and sizes. At the same time, the design uses a live connection between each structural part to achieve the purpose of quick assembly and disassembly, thereby improving the processing efficiency of the workshop. On the basis of solving the problems of existing center frame components being difficult to disassemble and inconvenient for maintenance, it is applicable to most processing parts, reduces cost investment, and improves processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0014] Figure 3 It is a cross-sectional structural schematic diagram of the utility model;

[0015] Figure 4 It is a schematic diagram of the top structure of the utility model.

[0016] The reference numerals involved in the above drawings are: base 1, upper support 2, lower support 3, sliding sleeve 4, top block 5, screw rod 6, connecting plate 7, sheath 8, cylindrical pin 9, positioning rod 10, joint bolt 11, nut 12. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0018] The implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0019] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present utility model. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0020] Reference Figure 1-4 As shown, it is a preferred embodiment provided by the utility model.

[0021] A U-shaped detachable CNC lathe center frame comprises a base 1, an upper support 2, a lower support 3 and a limit locking device, wherein the base 1 is arranged in the middle of the bottom end of the lower support 3, the upper support 2 is arranged at the top end of the lower support 3, and the two ends of the upper support 2 are detachably connected to the two sides of the top end of the lower support 3, a U-shaped notch is opened in the middle end of the lower support 3, and limit through holes are opened on both sides of the lower end of the U-shaped notch and the middle of the lower end of the upper support 2, and a limit locking device is provided in each through hole.

[0022] Each limiting locking device includes a sleeve 4, a top block 5, a screw 6, a connecting plate 7 and a sleeve 8. The connecting plate 7 is arranged at the outer opening of each through hole, and the connecting plate 7 is connected to the outer opening wall of the through hole by bolts. The sleeve 4 is arranged on the inner wall of the through hole, the screw 6 is arranged in the sleeve 4, and the rear end of the screw 6 passes through the middle end of the connecting plate 7 and is rotatably connected to the connecting plate 7. The sleeve 8 is arranged at the rear end of the screw 6. The top block 5 is arranged at the inner opening of the through hole, and the outer end of the top block 5 is arranged in the sleeve 4 and is slidably connected to the sleeve 4. The front end of the screw 6 is arranged in the middle of the outer end of the top block 5 and is threadedly connected to the top block 5. Three sets of limiting locking devices are arranged on the support. The position of the screw 6 is adjusted by the cylindrical pin 9, and the connecting plate 7 is pressed. The three top blocks 5 cooperate to firmly fix the workpiece in the center position, which can effectively reduce the vibration of the workpiece during processing.

[0023] A tightening assembly is provided on one side of the middle end of each through hole, and each tightening assembly includes a cylindrical pin 9 and a positioning rod 10. One end of the positioning rod 10 passes through the upper support 2 and the lower support 3 and is arranged in the through hole, and the positioning rod 10 is correspondingly connected to the upper support 2 and the lower support 3 for rotation, and the other end of the positioning rod 10 is provided with a cylindrical pin 9. The tightening assembly is more convenient to operate during the positioning process by providing the cylindrical pin 9 and the positioning rod 10. By rotating the cylindrical pin 9 so that the end of the positioning rod 10 is against the bottom of the screw 6, the vibration amplitude of the positioning rod can be reduced, which plays a positioning role and makes the locking device more stable.

[0024] Both sides of the upper end of the lower support 3 are provided with live bolts 11, and the lower end of each live bolt 11 is rotatably connected to the lower support 3. Both sides of the upper support 2 are provided with slots, and each live bolt 11 is correspondingly arranged in the slots, and a nut 12 is arranged at the top of each live bolt 11. The upper support 2 and the lower support 3 of the U-shaped frame are connected by live bolts 11 and nuts 12, which overcomes the disadvantage of the previous center frame being connected by welding, making the disassembly and assembly operations more convenient and quick.

[0025] A cylindrical pin 9 is provided at the bottom end of each screw rod 6 .

[0026] A convex clamping block is provided at the bottom end of the base 1, and the convex clamping block is correspondingly connected to the middle end of the base 1 through connecting bolts.

[0027] During disassembly, when it is necessary to replace the parts of the limit locking device, it is only necessary to remove the sheath 8, remove the bolts on the connecting plate 7, and the bolts and screws on the positioning rod 10, and then the locking parts can be disassembled and replaced.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A U-shaped detachable CNC lathe center frame, characterized in that: It includes a base, an upper support, a lower support and a limit locking device, the base is arranged in the middle of the bottom end of the lower support, the upper support is arranged at the top end of the lower support, and the two ends of the upper support are detachably connected to the two sides of the top end of the lower support, a U-shaped notch is opened in the middle end of the lower support, and limit through holes are opened on both sides of the lower end of the U-shaped notch and the middle of the lower end of the upper support, and a limit locking device is provided in each of the through holes.

2. The U-shaped detachable CNC lathe center frame according to claim 1, characterized in that: Each of the limit locking devices includes a sliding sleeve, a top block, a screw, a connecting plate and a sleeve. The connecting plate is arranged at the outer opening of each through hole, and the connecting plate is connected to the outer opening wall of the through hole by bolts. The sliding sleeve is arranged on the inner wall of the through hole, the screw is arranged in the sliding sleeve, and the rear end of the screw passes through the middle end of the connecting plate and is rotatably connected to the connecting plate accordingly. The sleeve is arranged at the rear end of the screw, the top block is arranged at the inner opening of the through hole, and the outer end of the top block is arranged in the sliding sleeve and is slidably connected to the sliding sleeve accordingly, and the front end of the screw is arranged in the middle of the outer end of the top block and is rotatably connected to the corresponding thread of the top block.

3. The U-shaped detachable CNC lathe center frame according to claim 2, characterized in that: A clamping assembly is provided on one side of the middle end of each through hole, and each of the clamping assembly includes a cylindrical pin and a positioning rod. One end of the positioning rod passes through the upper support and the lower support and is arranged in the through hole, and the positioning rod is correspondingly rotatably connected to the upper support and the lower support, and the other end of the positioning rod is provided with a cylindrical pin.

4. The U-shaped detachable CNC lathe center frame according to claim 3, characterized in that: Both sides of the upper end of the lower support are provided with movable bolts, and the lower end of each movable bolt is rotatably connected to the lower support. Both sides of the upper support are provided with slots, and each movable bolt is correspondingly arranged in the slot, and a nut is provided at the top of each movable bolt.

5. The U-shaped detachable CNC lathe center frame according to claim 4, characterized in that: A cylindrical pin is arranged at the bottom end of each screw rod.

6. The U-shaped detachable CNC lathe center frame according to claim 5, characterized in that: A convex clamping block is provided at the bottom end of the base, and the convex clamping block is correspondingly connected to the middle end of the base through connecting bolts.

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