Auxiliary clamping device for lathe

Abstract

A lathe auxiliary clamping device is characterized in that the lathe auxiliary clamping device comprises a clamping shaft, and a spiral micrometer calibration assembly is arranged at the upper end of the clamping shaft; the spiral micrometer calibration assembly comprises a chassis and a calibration assembly, and the chassis is fixedly connected with the clamping shaft; the upper end of the calibration assembly is fixedly connected with the product clamping groove. The spiral micrometer calibration assembly can adjust the rotation axis of the product in the product clamping groove. The clamping shaft is a cylinder and can be directly clamped and fixed with a three-jaw chuck of a lathe. The three-jaw chuck clamps and fixes the clamping shaft to drive the rotary body machining device to rotate integrally, so that rotary body machining of the CNC machine tool is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe equipment, mainly to an auxiliary clamping device for a lathe. Background Art

[0002] The operating principle of a CNC machine tool is to input a pre-programmed machining program into the machine control system. The control system then issues commands, driving the servo motors to move the machine's axes along a predetermined trajectory. This controls the relative position of the tool and workpiece, ultimately completing the machining of the part. This method significantly improves machining accuracy and efficiency, reduces the impact of human factors on machining quality, and offers significant advantages in machining products with rotating features. However, the three-jaw chuck of a CNC machine tool cannot clamp products with square features, making the production of products with rotating features on only one end extremely inconvenient. To leverage the advantages of CNC machine tools in producing rotating features, an auxiliary clamping device is required to assist in production.

[0003] The prior art publication number CN118046014A discloses a lathe auxiliary manipulator with an in-machine workpiece reversing and precise clamping and positioning device. The invention discloses a lathe auxiliary manipulator mechanism with an in-machine workpiece reversing and precise clamping and positioning device. The invention comprises a lathe body and a spindle automatic chuck disposed on the lathe body. A workpiece pallet and a truss manipulator for moving the workpiece to be processed from the workpiece pallet to the spindle automatic chuck are disposed on one side of the lathe body. The truss manipulator comprises a mobile truss and a gripping device disposed on the mobile truss. The invention completes the reversing and turning of the workpiece in the machine by designing an in-machine workpiece reversing device, thereby merging the processing that originally required two machine tools and two steps to complete into one machine tool. This improves processing efficiency and thereby saves production costs. Utility Model Content

[0004] CNC machine tools offer excellent precision and efficiency in machining products with rotational features. However, the three-jaw chucks of CNC machine tools cannot clamp square features, making it very inconvenient to produce products with only one rotational feature. To maximize the advantages of CNC machine tools in machining rotational features, an auxiliary clamping device is needed to assist in production.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an auxiliary clamping device for a lathe, characterized in that it includes a clamping shaft, the upper end of which is provided with a micrometer calibration assembly; the micrometer calibration assembly includes a chassis and a calibration assembly, the chassis being fixedly connected to the clamping shaft; the upper end of the calibration assembly is fixedly connected to the product clamping slot. The micrometer calibration assembly can adjust the axis of rotation of the product within the product clamping slot; the clamping shaft is a cylinder that can be directly clamped and fixed by the three-jaw chuck of the lathe. The three-jaw chuck clamps and fixes the clamping shaft, driving the entire device to rotate, thereby realizing rotary body processing of CNC machine tools.

[0006] As a further improvement to the present invention, the calibration assembly comprises a two-layer structure, one containing a transverse micrometer screw calibrator and the other containing a longitudinal micrometer screw calibrator. The transverse and longitudinal micrometer screw calibrators share the same structure and are fixedly connected. The transverse and longitudinal micrometer screw calibrators align the central axis of the rotating part of the product being processed with the three-jaw chuck, achieving precise movement and concentricity control, thereby enabling CNC machine tool rotary processing.

[0007] As a further improvement of the present invention, the transverse micrometer calibrator includes a first slider and a first slide rail, the top of the first slider is fixedly connected to the product clamping groove, the side of the first slide rail is fixedly connected to the first spiral calibration rod, and the first spiral calibration rod abuts the first baffle on the side of the first slider. The longitudinal micrometer calibrator includes a second slider and a second slide rail, the top of the second slider is fixedly connected to the first slide rail of the transverse micrometer calibrator, the side of the second slide rail is fixedly connected to the second spiral calibration rod, the second spiral calibration rod abuts the second baffle on the side of the second slider, and the second slide rail is fixedly connected to the chassis. When in use, the displacement of the slider on the slide rail is promoted by rotating the spiral calibration rod, so as to achieve fine-tuning of the position of the product's transverse and longitudinal displacement on the slide rail, realize precise movement control and concentricity, ensure that the central axis of the rotating body part of the product to be processed is aligned with the three-jaw chuck, and thus perform rotating body processing of the CNC machine tool.

[0008] As a further improvement to the present invention, the product clamping slot is a U-shaped slot with a hinged rotating cover plate at its opening. A fixed top plate is located on the side of the rotating cover plate closest to the product clamping slot. The end of the rotating cover plate, away from the hinge, is connected to the product clamping slot via a screw. The rotating cover plate and screws are used to clamp and secure the product to be processed within the U-shaped slot, while the fixed top plate is used to contact and secure the product to be processed.

[0009] The beneficial effect of the utility model is that through the lathe auxiliary clamping device, the processed products that are not rotating bodies can be clamped on the CNC machine tool, and the rotation axis can be adjusted to be symmetrical, so as to realize the processing of products with one end being a non-rotating body and the other end being a rotating body. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is the overall structure diagram of the utility model.

[0011] In the figure: 1 is the clamping shaft, 2 is the horizontal micrometer calibrator, 3 is the longitudinal micrometer calibrator, 2.1 is the first slider, 2.2 is the first slide rail, 2.3 is the first baffle, 3.1 is the second slider, 3.2 is the second slide rail, 3.3 is the second baffle, 4.1 is the first screw calibration rod, 4.2 is the second screw calibration rod, 5 is the chassis, 6 is the product clamping groove, 7 is the rotating cover, 8 is the twist screw, and 9 is the fixed top plate. DETAILED DESCRIPTION

[0012] Example 1: An auxiliary clamping device for a lathe, characterized by comprising a clamping shaft 1, the upper end of which is provided with a micrometer calibration assembly; the micrometer calibration assembly comprises a chassis 5 and a calibration assembly, the chassis 5 being fixedly connected to the clamping shaft 1; the upper end of the calibration assembly being fixedly connected to a product clamping slot 6. The micrometer calibration assembly can adjust the axis of rotation of the product within the product clamping slot 6; the clamping shaft 1 is cylindrical and can be directly clamped and fixed by the three-jaw chuck of the lathe. The three-jaw chuck clamps and fixes the clamping shaft 1, driving the entire device to rotate, thereby achieving rotary body machining on a CNC machine tool.

[0013] As a further improvement to the present invention, the calibration assembly comprises a two-layer structure, one comprising a transverse micrometer screw calibrator 2 and the other comprising a longitudinal micrometer screw calibrator 3. The transverse micrometer screw calibrator 2 and the longitudinal micrometer screw calibrator 3 are identical in structure and are fixedly connected. The transverse and longitudinal micrometer screw calibrators align the central axis of the rotating part of the product to be processed with the three-jaw chuck, achieving precise movement and concentricity control, thereby enabling CNC machine tool rotary processing.

[0014] As a further improvement of the present invention, the transverse micrometer calibrator 2 includes a first slider 2.1 and a first slide rail 2.2. The top of the first slider 2.1 is fixedly connected to the product clamping groove 6. The side of the first slide rail 2.2 is fixedly connected to the first spiral calibration rod. The first spiral calibration rod abuts the first baffle 2.3 on the side of the first slider 2.1. The longitudinal micrometer calibrator 3 includes a second slider 3.1 and a second slide rail 3.2. The top of the second slider 3.1 is fixedly connected to the first slide rail 2.2 of the transverse micrometer calibrator 2. The side of the second slide rail 3.2 is fixedly connected to the second spiral calibration rod 4.2. The second spiral calibration rod 4.2 abuts the second baffle 3.3 on the side of the second slider 3.1. The second slide rail 3.2 is fixedly connected to the chassis 5. When in use, the displacement of the slider on the slide rail is promoted by rotating the spiral calibration rod, so as to achieve fine-tuning of the horizontal and vertical displacement position of the product on the slide rail, realize precise movement control and concentricity, ensure that the central axis of the rotating body part of the product to be processed is aligned with the three-jaw chuck, and thus perform rotating body processing of the CNC machine tool.

[0015] As a further improvement to the present invention, the product clamping slot 6 is a U-shaped slot with a hinged rotating cover plate 7 at its opening. A fixed top plate 9 is located on the side of the rotating cover plate 7 closest to the product clamping slot 6. The end of the rotating cover plate 7, away from the hinge, is connected to the product clamping slot 6 via a screw 8. The rotating cover plate 7 and screw 8 are used to clamp and secure the product to be processed within the U-shaped clamping slot, while the fixed top plate 9 is used to contact and secure the product to be processed.

[0016] During production and processing, the non-rotating end of the product to be processed is placed in the product clamping groove 6, which is fastened with a rotating cover plate 7 connected by a hinge, and the top plate 9 is fixed to touch the product. The clamping force is then adjusted with the twist screw 8 to fix it. After clamping is completed, the rotation axis is calibrated using the transverse micrometer calibrator 2 and the longitudinal micrometer calibrator 3 below the product clamping groove 6. When calibrating the rotation axis, the spiral calibration rods on the sides of the transverse micrometer calibrator 2 and the longitudinal micrometer calibrator 3 are rotated. The spiral calibration rods push the baffles on the slider to achieve the displacement of the slider on the slide rail, so that the product can move precisely and minutely on the first slide rail 2.2 and the second slide rail 3.2, and the movement is precisely controlled and concentric. After the concentric calibration and adjustment of the rotation axis center is completed, the CNC lathe can be started for processing to achieve the processing of the rotating body at one end. CNC machine tools, that is, computer numerical control machine tools, are automated machine tools equipped with a program control system. They control the movement and processing process of the machine tool through computer programming to achieve automatic processing of parts. The operating principle of a CNC machine tool is to input a pre-programmed machining program into the machine control system. The control system then issues commands to drive the servo motors, causing the machine's axes to move along predetermined trajectories. This controls the relative position of the tool and workpiece, enabling part machining. This method significantly improves machining accuracy and efficiency, while reducing the impact of human factors on machining quality.

[0017] Example 2: An auxiliary clamping device for a lathe, characterized by comprising a clamping shaft 1, the upper end of which is provided with a micrometer calibration assembly; the micrometer calibration assembly comprises a chassis 5 and a calibration assembly, the chassis 5 being fixedly connected to the clamping shaft 1; the upper end of the calibration assembly being fixedly connected to a product clamping slot 6. The micrometer calibration assembly can adjust the axis of rotation of the product within the product clamping slot 6; the clamping shaft 1 is cylindrical and can be directly clamped and fixed by the three-jaw chuck of the lathe. The three-jaw chuck clamps and fixes the clamping shaft 1, driving the entire device to rotate, thereby achieving rotary body machining on a CNC machine tool.

[0018] As a further improvement of the present invention, the calibration assembly has a two-layer structure, one of which is a transverse micrometer screw calibrator 2, and the other is a longitudinal micrometer screw calibrator 3. The transverse micrometer screw calibrator 2 has the same structure as the longitudinal micrometer screw calibrator 3, and the two are fixedly connected. The transverse and longitudinal micrometer screw calibrators can be used to align the central axis of the rotating part of the product to be processed with the three-jaw chuck to achieve precise movement and concentricity control, thereby performing rotating body processing of the CNC machine tool. The transverse micrometer screw calibrator 2 and the longitudinal micrometer screw calibrator 3 are provided with a spring reset structure, which can quickly reset and adjust the axis when switching to process rotating products with different axis centers.

[0019] As a further improvement of the present invention, the transverse micrometer calibrator 2 includes a first slider 2.1 and a first slide rail 2.2. The top of the first slider 2.1 is fixedly connected to the product clamping groove 6. The side of the first slide rail 2.2 is fixedly connected to the first spiral calibration rod. The first spiral calibration rod abuts the first baffle 2.3 on the side of the first slider 2.1. The longitudinal micrometer calibrator 3 includes a second slider 3.1 and a second slide rail 3.2. The top of the second slider 3.1 is fixedly connected to the first slide rail 2.2 of the transverse micrometer calibrator 2. The side of the second slide rail 3.2 is fixedly connected to the second spiral calibration rod 4.2. The second spiral calibration rod 4.2 abuts the second baffle 3.3 on the side of the second slider 3.1. The second slide rail 3.2 is fixedly connected to the chassis 5. When in use, the displacement of the slider on the slide rail is promoted by rotating the spiral calibration rod, so as to achieve fine-tuning of the horizontal and vertical displacement position of the product on the slide rail, realize precise movement control and concentricity, ensure that the central axis of the rotating body part of the product to be processed is aligned with the three-jaw chuck, and thus perform rotating body processing of the CNC machine tool. The transverse micrometer screw calibrator 2 and the longitudinal micrometer screw calibrator 3 are provided with a spring reset structure, which can quickly reset and adjust the axis when switching to process rotating products with different axis centers, without wasting time on rotating the screw calibration rod.

[0020] As a further improvement to the present invention, the product clamping slot 6 is a U-shaped slot with a hinged rotating cover plate 7 at its opening. A fixed top plate 9 is located on the side of the rotating cover plate 7 closest to the product clamping slot 6. The end of the rotating cover plate 7, away from the hinge, is connected to the product clamping slot 6 via a screw 8. The rotating cover plate 7 and screw 8 are used to clamp and secure the product to be processed within the U-shaped clamping slot, while the fixed top plate 9 is used to contact and secure the product to be processed.

[0021] During production and processing, the non-rotating end of the product to be processed is placed in the product clamping groove 6, which is fastened with a rotating cover plate 7 connected by a hinge, and the top plate 9 is fixed to touch the product. The clamping force is then adjusted with the twist screw 8 to fix it. After clamping is completed, the rotation axis is calibrated using the transverse micrometer calibrator 2 and the longitudinal micrometer calibrator 3 below the product clamping groove 6. When calibrating the rotation axis, the spiral calibration rods on the sides of the transverse micrometer calibrator 2 and the longitudinal micrometer calibrator 3 are rotated. The spiral calibration rods push the baffles on the slider to achieve the displacement of the slider on the slide rail, so that the product can move precisely and minutely on the first slide rail 2.2 and the second slide rail 3.2, and the movement is precisely controlled and concentric. After the concentric calibration and adjustment of the rotation axis center is completed, the CNC lathe can be started for processing to achieve the processing of the rotating body at one end. CNC machine tools, that is, computer numerical control machine tools, are automated machine tools equipped with a program control system. They control the movement and processing process of the machine tool through computer programming to achieve automatic processing of parts. The working principle of a CNC machine tool is to input a prepared machining program into the machine tool control system, issue instructions through the control system, drive the servo motor, and make the various axes of the machine tool move along a predetermined trajectory, thereby controlling the relative position of the tool and the workpiece to achieve part processing. This working method greatly improves the accuracy and efficiency of machining and reduces the impact of human factors on machining quality. The transverse micrometer screw calibrator 2 and the longitudinal micrometer screw calibrator 3 are equipped with a spring reset structure to facilitate the switching of machining of rotating bodies with different axis centers. When switching to machining rotating body products with different axis centers, the axis center can be quickly reset and adjusted, without wasting time on rotating the screw calibration rod.

[0022] Example 3: An auxiliary clamping device for a lathe, characterized by comprising a clamping shaft 1, the upper end of which is provided with a micrometer calibration assembly; the micrometer calibration assembly comprises a chassis 5 and a calibration assembly, the chassis 5 being fixedly connected to the clamping shaft 1; the upper end of the calibration assembly being fixedly connected to a product clamping slot 6. The micrometer calibration assembly can adjust the axis of rotation of the product within the product clamping slot 6; the clamping shaft 1 is cylindrical and can be directly clamped and fixed by the three-jaw chuck of the lathe. The three-jaw chuck clamps and fixes the clamping shaft 1, driving the entire device to rotate, thereby achieving rotary body machining on a CNC machine tool.

[0023] As a further improvement of the present invention, the calibration assembly has a two-layer structure, one of which is a transverse micrometer screw calibrator 2, and the other is a longitudinal micrometer screw calibrator 3. The transverse micrometer screw calibrator 2 has the same structure as the longitudinal micrometer screw calibrator 3, and the two are fixedly connected. The transverse and longitudinal micrometer screw calibrators can be used to align the central axis of the rotating part of the product to be processed with the three-jaw chuck to achieve precise movement and concentricity control, thereby performing rotating body processing of the CNC machine tool. The transverse micrometer screw calibrator 2 and the longitudinal micrometer screw calibrator 3 are provided with a spring reset structure, which can quickly reset and adjust the axis when switching to process rotating products with different axis centers.

[0024] As a further improvement of the present invention, the transverse micrometer calibrator 2 includes a first slider 2.1 and a first slide rail 2.2. The top of the first slider 2.1 is fixedly connected to the product clamping groove 6. The side of the first slide rail 2.2 is fixedly connected to the first spiral calibration rod. The first spiral calibration rod abuts the first baffle 2.3 on the side of the first slider 2.1. The longitudinal micrometer calibrator 3 includes a second slider 3.1 and a second slide rail 3.2. The top of the second slider 3.1 is fixedly connected to the first slide rail 2.2 of the transverse micrometer calibrator 2. The side of the second slide rail 3.2 is fixedly connected to the second spiral calibration rod 4.2. The second spiral calibration rod 4.2 abuts the second baffle 3.3 on the side of the second slider 3.1. The second slide rail 3.2 is fixedly connected to the chassis 5. When in use, the displacement of the slider on the slide rail is promoted by rotating the spiral calibration rod, so as to achieve fine-tuning of the horizontal and vertical displacement position of the product on the slide rail, realize precise movement control and concentricity, ensure that the central axis of the rotating body part of the product to be processed is aligned with the three-jaw chuck, and thus perform rotating body processing of the CNC machine tool. The transverse micrometer screw calibrator 2 and the longitudinal micrometer screw calibrator 3 are provided with a spring reset structure, which can quickly reset and adjust the axis when switching to process rotating products with different axis centers, without wasting time on rotating the screw calibration rod. The product clamping groove 6 is a U-shaped groove, and a rotating cover plate 7 connected by a hinge is provided at the opening of the product clamping groove 6. A fixed top plate 9 is provided on the side of the rotating cover plate 7 close to the product clamping groove 6, and the end of the rotating cover plate 7 away from the hinge is connected to the product clamping groove 6 by a twisting screw 8. The rotating cover plate 7 and the twisting screw 8 are used to clamp and fix the product to be processed in the U-shaped clamping groove, and the fixed top plate 9 is used to contact and fix the product to be processed.

[0025] As a further improvement to the present invention, the fixed top plate 9 is a PVC top block made of PVC material. PVC top blocks have excellent physical properties and chemical stability. PVC, short for Polyvinyl Chloride, is a widely used plastic material. It has excellent physical and chemical properties, such as chemical corrosion resistance, strong weather resistance, excellent insulation properties, and ease of processing. When processing certain powder materials, the PVC top block is less likely to react with or damage the product being processed in the lathe's working environment, and therefore is used to contact and secure the product being processed.

[0026] During production and processing, the non-rotating end of the product to be processed is placed in the product clamping groove 6, which is fastened with a rotating cover plate 7 connected by a hinge, and the top plate 9 is fixed to touch the product. The clamping force is then adjusted with the twist screw 8 to fix it. After clamping is completed, the rotation axis is calibrated using the transverse micrometer calibrator 2 and the longitudinal micrometer calibrator 3 below the product clamping groove 6. When calibrating the rotation axis, the spiral calibration rods on the sides of the transverse micrometer calibrator 2 and the longitudinal micrometer calibrator 3 are rotated. The spiral calibration rods push the baffles on the slider to achieve the displacement of the slider on the slide rail, so that the product can move precisely and minutely on the first slide rail 2.2 and the second slide rail 3.2, and the movement is precisely controlled and concentric. After the concentric calibration and adjustment of the rotation axis center is completed, the CNC lathe can be started for processing to achieve the processing of the rotating body at one end. CNC machine tools, that is, computer numerical control machine tools, are automated machine tools equipped with a program control system. They control the movement and processing process of the machine tool through computer programming to achieve automatic processing of parts. The working principle of a CNC machine tool is to input a prepared machining program into the machine tool control system, issue instructions through the control system, drive the servo motor, and make the various axes of the machine tool move along a predetermined trajectory, thereby controlling the relative position of the tool and the workpiece to achieve part processing. This working method greatly improves the accuracy and efficiency of machining and reduces the impact of human factors on machining quality. The transverse micrometer screw calibrator 2 and the longitudinal micrometer screw calibrator 3 are equipped with a spring reset structure to facilitate the switching of machining of rotating bodies with different axis centers. When switching to machining rotating body products with different axis centers, the axis center can be quickly reset and adjusted, without wasting time on rotating the screw calibration rod.

[0027] The above specific embodiments are merely preferred embodiments of the present invention and are not intended to limit the specific implementation structure and scope of the present invention. In fact, equivalent variations can be made based on the shape, structure, and design purpose of the present invention. Therefore, all equivalent variations made based on the shape, structure, and design purpose of the present invention should be included in the scope of protection of the present invention and should be protected by the present invention.

Claims

1. A lathe auxiliary clamping device, characterized in that: It includes a clamping shaft, the upper end of which is provided with a screw micrometer calibration assembly; the screw micrometer calibration assembly includes a chassis and a calibration assembly, the chassis is fixedly connected to the clamping shaft; the upper end of the calibration assembly is connected to the product clamping groove.

2. The lathe auxiliary clamping device according to claim 1, characterized in that: The calibration component is a two-layer structure, one layer is a transverse micrometer screw calibrator, and the other layer is a longitudinal micrometer screw calibrator.

3. The lathe auxiliary clamping device according to claim 2, characterized in that: The transverse micrometer screw calibrator and the longitudinal micrometer screw calibrator have the same structure and are fixedly connected.

4. The lathe auxiliary clamping device according to claim 2 or 3, characterized in that: The transverse screw micrometer calibrator includes a first slider and a first slide rail. The top of the first slider is fixedly connected to the product clamping groove. The side of the first slide rail is fixedly connected to the first screw calibration rod. The first screw calibration rod abuts against the first baffle on the side of the first slider.

5. The lathe auxiliary clamping device according to claim 2 or 3, characterized in that: The longitudinal micrometer calibrator includes a second slider and a second slide rail. The top of the second slider is fixedly connected to the first slide rail of the transverse micrometer calibrator. The side of the second slide rail is fixedly connected to the second screw calibration rod. The second screw calibration rod abuts against the second baffle on the side of the second slider. The second slide rail is fixedly connected to the chassis.

6. The lathe auxiliary clamping device according to claim 1, characterized in that: The product clamping groove is a U-shaped groove, and the open end of the product clamping groove is provided with a rotating cover connected by a hinge.

7. The lathe auxiliary clamping device according to claim 6, characterized in that: The rotating cover is provided with a fixed top plate on one side close to the product clamping groove, and the end of the rotating cover away from the hinge is connected to the product clamping groove by a twist screw.

8. The lathe auxiliary clamping device according to claim 1, characterized in that: The clamping shaft is a cylinder and is directly clamped and fixed by a three-jaw chuck of a lathe.

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