Supporting tailstock for lathe

Abstract

The invention relates to the technical field of lathe tail seats, in particular to a supporting tail seat for a lathe, which comprises a sliding seat, a clamping chuck, a supporting seat, a supporting seat and a driving mechanism, wherein the sliding seat is arranged on the lathe in a sliding manner and is close to a workpiece; the tailstock body is arranged on the sliding seat; the tailstock sleeve is arranged on the tailstock body and connected with a tailstock mandrel used for abutting against a workpiece in a matched mode. The sliding mechanism is arranged on the lathe, is connected with the sliding seat and is used for driving the sliding seat to slide; and the supporting mechanism comprises a first supporting frame rotationally arranged on the sliding base, a rotating piece arranged on the first supporting frame and an adjusting assembly arranged on the sliding base and used for driving the first supporting frame to rotate, and the rotating piece is used for supporting the side wall of the workpiece. The method has the effect of reducing the influence on the machining precision of the workpiece.

Description

Technical Field

[0001] The present application relates to the technical field of lathe tailstocks, and in particular to a supporting tailstock for a lathe. Background Art

[0002] At present, in the field of lathe processing, especially in the processing of shaft parts, the tailstock plays a vital role. The traditional lathe tailstock usually uses a threaded pair with a handwheel to manually adjust the extension and contraction of the tailstock sleeve, and uses the top to tighten the workpiece to ensure the stability of processing.

[0003] However, during the high-speed cutting of shaft workpieces, once the contact between the workpiece and the cutting tool is blocked, the stability of the workpiece is likely to decrease, causing the rotation trajectory of the shaft workpiece to fluctuate, thereby affecting the accuracy after processing; secondly, the long-term contact between the single clamping point at the front end of the center and the high-speed rotating workpiece will accelerate the wear of the center, reduce the service life of the center, and affect the processing accuracy of the workpiece. Summary of the invention

[0004] In order to improve the stability of workpiece fixation and reduce the impact on workpiece machining accuracy, the present application provides a supporting tailstock for a lathe.

[0005] The present application provides a supporting tailstock for a lathe, which adopts the following technical solution: A supporting tailstock for a lathe, comprising: A sliding seat, slidably arranged on the lathe, close to the clamping chuck of the workpiece; A tailstock body, arranged on the sliding seat; A tailstock sleeve is arranged on the tailstock body and is cooperatively connected with a tailstock spindle for abutting against a workpiece; A sliding mechanism is arranged on the lathe and connected to the sliding seat, and is used to drive the sliding seat to slide; The supporting mechanism comprises a first supporting frame rotatably arranged on the sliding seat, a rotating member arranged on the first supporting frame and an adjusting component arranged on the sliding seat for driving the first supporting frame to rotate, wherein the rotating member is used to support the side wall of the workpiece.

[0006] By adopting the above technical scheme, the sliding seat is slidably arranged on the lathe, close to the clamping chuck of the workpiece, and is moved forward and backward or left and right on the lathe by the sliding seat to meet the processing requirements of different workpieces; the tailstock body is fixedly installed on the sliding seat, and the tailstock sleeve is arranged on the tailstock body; the tailstock spindle is cooperatively connected with the tailstock sleeve and is used to abut one end of the workpiece during the processing to provide stable support; the sliding mechanism is connected with the sliding seat and is used to drive the sliding seat to perform precise sliding adjustment as needed during the processing; the workpiece is clamped on the clamping chuck of the lathe, and then the sliding seat is moved to an appropriate position by the sliding mechanism so that the tailstock spindle can abut the other end of the workpiece; the first support frame in the support mechanism is rotatably arranged on the sliding seat, and a rotating member is arranged on it. The rotating part is used to support the side wall of the workpiece; it can adapt to workpieces of different diameters and provide stable side support; it shares the force on the tailstock spindle and reduces the wear of the tailstock spindle. At the same time, it provides support for the workpiece during processing, reduces the deflection of the workpiece, reduces the impact on the processing accuracy of the workpiece, and improves the processing stability of the workpiece; the adjustment component is used to adjust the angle and position of the first support frame to better adapt to the shape and processing requirements of the workpiece; through the adjustment component, the position and angle of the rotating part can be accurately adjusted to ensure that the workpiece remains stable during processing.

[0007] During the machining process, the tool of the lathe cuts the workpiece. Since the workpiece is stably clamped and supported by the clamping chuck and tailstock spindle, and supported laterally by the support mechanism, the stability and accuracy of the machining process can be ensured.

[0008] According to the processing requirements, the position of the sliding seat can be adjusted through the sliding mechanism to change the relative position between the workpiece and the tool; at the same time, the angle and position of the support mechanism can be adjusted through the adjustment component to adapt to different processing stages and workpiece shapes; the workpiece is supported and clamped in multiple directions during the processing, which can significantly improve its stability. This helps to reduce vibration and errors during the processing and improve the processing quality.

[0009] Optionally, a conical contact surface is formed at one end of the tailstock spindle away from the tailstock sleeve for facilitating centering.

[0010] By adopting the above technical solution, the design of the tapered contact surface makes it easier for the tailstock spindle to achieve center alignment when it abuts the workpiece. Due to the characteristics of the cone, even if there is a certain deviation during the initial contact, as the tailstock spindle is further advanced, this deviation will gradually be corrected, thereby achieving more accurate center positioning; when the tapered contact surface contacts the workpiece, it can form a more stable support structure; compared with the plane contact, the tapered contact surface is less likely to slip or tilt when subjected to external force, thereby ensuring the stability of the workpiece during processing; when the tapered contact surface contacts the workpiece, its contact area gradually increases, which helps to disperse the contact pressure and reduce the wear per unit area; at the same time, since the tapered contact surface has the characteristics of self-centering, it can reduce the additional wear caused by the shape or position deviation of the workpiece; the design of the tapered contact surface makes the tailstock spindle suitable for workpieces of different diameters, and due to the characteristics of the cone, the tailstock spindle can be adaptively adjusted according to the diameter of the workpiece, thereby achieving a wider range of applicability.

[0011] Optionally, the adjustment assembly includes an adjusting cylinder and an adjusting rod, the adjusting rod is arranged on the first support frame, the cylinder body of the adjusting cylinder is hinged on the sliding seat, and the piston rod of the adjusting cylinder is hinged on the adjusting rod. As the adjusting cylinder extends, the first support frame connected to the adjusting rod is driven to rotate.

[0012] By adopting the above technical solution, the adjusting cylinder is in an unextended state, its cylinder body is hinged on the sliding seat, and the piston rod is hinged on the adjusting rod; the adjusting rod is arranged on the first support frame, and the first support frame is rotatably arranged on the sliding seat; at this time, the first support frame and the rotating member thereon (forming an arc-shaped supporting space) are at a certain initial angle and position; when the angle of the first support frame needs to be adjusted, the adjusting cylinder begins to extend; since the cylinder body of the adjusting cylinder is hinged on the sliding seat and its position is fixed, and the piston rod is hinged on the adjusting rod, as the piston rod extends, it will apply a thrust to the adjusting rod; this thrust is transmitted to the first support frame through the adjusting rod, causing the first support frame to rotate around its rotation axis; as the adjusting cylinder continues to extend, the first support frame Gradually rotate to the required angle; during the rotation process, the angle of the rotating part (forming an arc-shaped supporting space) also changes accordingly to adapt to the side walls of workpieces with different diameters or shapes; when the first support frame rotates to the required angle, the adjusting cylinder stops extending; at this time, the first support frame and the rotating part thereon are stably supported on the side wall of the workpiece to provide necessary support and positioning for the workpiece; by adjusting the extension and shortening of the cylinder, the angle and position of the first support frame can be flexibly adjusted; this adjustment method is fast and accurate, and can adapt to changes in different workpiece shapes and processing requirements; after the adjustment is completed, the first support frame and the rotating part thereon provide stable side support for the workpiece; this support helps to reduce vibration and errors during processing, and improve processing accuracy and workpiece quality.

[0013] Optionally, an arc frame is provided on the first support frame, and a sliding groove is opened on the arc frame, and the sliding groove is opened along the curvature of the arc frame, and two first sliders are slidably connected in the sliding groove; the rotating member is a first support roller, the first support roller corresponds to the first slider, and the first support roller rotates on the first slider, and the first support roller protrudes from the end surface of the arc frame close to the workpiece.

[0014] By adopting the above technical solution, the design of the arc frame enables it to fit closely to the arc or curved shape of the side wall of the workpiece, thereby providing more stable and uniform support; the combination of the sliding groove and the slider allows fine adjustment according to the specific shape and size of the workpiece, further enhancing the adaptability to different workpieces; the first support roller rotates on the slider, and this design reduces the friction between the side wall of the workpiece, making the support more stable and less likely to cause scratches on the surface of the workpiece; the protruding design of the first support roller ensures that they can fully contact the side wall of the workpiece, and maintain a good support effect even when the shape of the workpiece changes slightly; the sliding connection of the slider in the sliding groove allows the operator to quickly adjust the support position as needed; this adjustment method is not only simple and easy, but also ensures that the support position is always consistent with the optimal contact point of the side wall of the workpiece; stable support and flexible adjustment capabilities help reduce vibration and errors during processing; this enables the workpiece to maintain a more stable and precise position during processing, thereby improving processing accuracy and workpiece quality; the rotating design of the support roller reduces direct friction with the side wall of the workpiece, which helps to extend the service life of the support frame and the workpiece; at the same time, this design also reduces the heat and wear generated by friction, further improving the reliability and durability of the equipment.

[0015] Optionally, the arc frame is rotatably disposed on the first support frame, and a rotating assembly is disposed on the first support frame, and the rotating assembly includes: A first differential gear, fixedly connected to the rotating shaft of the arc frame; A second differential gear, rotatably disposed on the first support frame; a third differential gear, rotatably disposed on the first support frame, meshing with the second differential gear and meshing with the first differential gear, and having a different transmission ratio; A driving member is disposed on the first support frame and is drivingly connected to the second differential gear.

[0016] By adopting the above technical scheme, the driving member can be a motor, a hydraulic motor or other device that can provide rotational power; when the workpiece is auxiliary positioned and supported, the driving member drives the second differential gear to rotate, and the second differential gear drives the first differential gear to rotate in the same direction through the third differential gear, and the differential gear drives the arc frame to rotate, so as to achieve the angle adjustment of the first support roller, so that there is a longer contact line between the first support roller and the workpiece; due to the differential gear design, the rotation angle of the arc frame can be accurately adjusted; by adjusting the speed and direction of the driving member, the arc frame can be controlled to rotate at different speeds and directions to meet different processing requirements; this technical scheme allows the arc frame to be flexibly adjusted according to the shape and size of the workpiece, and through the design of the rotating component, it can adapt to workpieces of different diameters, curvatures and shapes to provide more stable and accurate support; the design of the rotating component makes the adjustment of the arc frame easier. The operator can adjust the arc frame by simply controlling the rotation of the drive member, without the need for complex manual adjustments or calibrations; stable support and precise adjustment capabilities help reduce vibration and errors during processing, and precise adjustment using rotating components can ensure that the arc frame always maintains optimal contact with the side wall of the workpiece, thereby improving processing accuracy and workpiece quality; the design of the differential gear reduces wear and heat caused by direct friction. The rotation adjustment of the arc frame through gear transmission can extend the service life of the equipment and reduce maintenance costs.

[0017] Optionally, the driving member comprises: A chain, both ends of which are arranged on the sliding seat; The transmission gear is rotatably connected to the first support frame, is coaxially connected to the second differential gear, and is meshed with the chain.

[0018] By adopting the above technical solution, when the adjustment component drives the first support frame to rotate, the first support frame and the chain rotate relative to each other, the relative displacement of the chain drives the gear to rotate, and the gear drives the second differential gear to rotate, providing power for the second differential gear. The use of chains and gears as driving parts simplifies the operation process; the operator only needs to control the tension or position of the chain, and the rotation direction and speed of the gear to achieve precise adjustment of the arc frame; the angle adjustment of the arc frame is synchronized with the angle adjustment of the first support frame, and the angle control of the arc frame is achieved by controlling the tension or position of the chain, or the rotation direction and speed of the gear, so that the first support roller on the arc frame is in line contact with the workpiece.

[0019] Optionally, a supporting assembly is further provided on the arc-shaped frame, and the supporting assembly includes: A second sliding block slides on the arc frame, and a sliding axis intersects with a sliding axis of the first sliding block; The second supporting roller is rotatably connected to the second sliding block, and the axis thereof is parallel to the first supporting roller.

[0020] By adopting the above technical solution, the addition of the supporting assembly enables the arc frame to provide more comprehensive and stable support. Through the design of the second slider and the second support roller, additional support points can be added on the basis of the first support roller, so as to better adapt to workpieces of different shapes and sizes; the second slider in the supporting assembly can slide on the arc frame. This design allows fine-tuning according to the specific shape and size of the workpiece, which is convenient for balancing the force and making the processing environment of the workpiece more stable.

[0021] Optionally, the supporting assembly further comprises: A support bracket, disposed on the second sliding block, and used to provide rotation support for the second supporting roller; A pressure sensor is arranged on the support frame and is used to measure the force applied to the second support roller.

[0022] By adopting the above technical solution, the support bracket is arranged on the second slider, and its main function is to provide stable rotation support for the second support roller. The design of the support bracket should ensure that the second support roller can rotate steadily and smoothly, and can withstand the pressure applied by the side wall of the workpiece; the pressure sensor is arranged on the support bracket to accurately measure the force borne by the second support roller when supporting the workpiece; the pressure sensor can monitor the force of the second support roller in real time and feed back the data to the control system, so that the operator can timely understand the support status of the workpiece and make adjustments as needed.

[0023] Optionally, the support bracket slides on the second slider, and the sliding direction is the same as the sliding direction of the second slider, and the support assembly further includes: The fine-tuning electric push cylinder is arranged on the second sliding block and connected to the supporting frame to drive the supporting frame to slide.

[0024] By adopting the above technical solution and introducing the fine-tuning electric push cylinder, the supporting assembly can better adapt to workpieces of different shapes and sizes; by controlling the extension and retraction of the fine-tuning electric push cylinder, the position of the second support roller can be quickly and accurately adjusted to meet the support position requirements of different workpieces, and the stress and wear state of the tailstock spindle can be determined according to the support force conditions, so that the position of the second support roller can be adjusted to reduce the wear of the tailstock spindle and maintain the accuracy of subsequent workpiece processing.

[0025] Optionally, the second sliding block is provided with an adjustment component, and the adjustment component includes: Two first connecting rods are provided and both are rotated on the second sliding block; There are two third sliders, both of which slide on the arc frame, and the sliding direction intersects with the sliding direction of the first slider, and the other end of the first connecting rod rotates on the third slider; A second connecting rod, which is equal in length to the first connecting rod, one end of which rotates coaxially with the first connecting rod and both rotate on the third slider, and the other end of which rotates on the first slider; A half gear ring, arranged on the first supporting frame; A power gear is rotatably disposed on the arc frame and meshes with the half gear ring; The driving screw rod is rotatably arranged on the arc frame, is coaxially connected with the power gear, and is threadedly connected with the second sliding block.

[0026] By adopting the above technical solution, the adjustment component realizes the coordinated movement between the first slider and the second slider through a complex connecting rod mechanism. This design allows the two sliders to slide while maintaining a certain relative position relationship, so that it can more flexibly adapt to workpieces of different shapes and sizes; by introducing the third slider and the first and second connecting rods, the adjustment component provides an additional support point for the workpiece. This helps to enhance the support capacity of the workpiece and reduce the vibration and error caused by insufficient support; the design of the adjustment component enables the support component to better adapt to workpieces of different shapes and sizes. By adjusting the position of the third slider and the rotation angle of the connecting rod, the position of the first slider and the second slider can be accurately controlled, thereby meeting the requirements of different workpieces for the support position; although the introduction of the adjustment component increases the complexity of the equipment, it also optimizes the operation process; the operator can adjust the position of the third slider and the rotation angle of the connecting rod to achieve fast and accurate adjustment of the support state of the workpiece without complex calculations and measurements; the connecting rod mechanism in the adjustment component is usually manufactured and installed using precision machining and assembly processes, and has high reliability and stability. Therefore, during long-term use, the adjustment component can maintain high accuracy and stability, reducing downtime and maintenance costs caused by equipment failure.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. The rotating member is used to support the side wall of the workpiece; it can adapt to workpieces of different diameters and provide stable side support; it shares the force on the tailstock spindle and reduces the wear of the tailstock spindle. At the same time, it provides support for the workpiece during processing, reduces the deflection of the workpiece, reduces the impact on the processing accuracy of the workpiece, and improves the processing stability of the workpiece; the adjustment component is used to adjust the angle and position of the first support frame to better adapt to the shape and processing requirements of the workpiece; the position and angle of the rotating member can be accurately adjusted through the adjustment component to ensure that the workpiece remains stable during processing; 2. The introduction of the fine-tuning electric push cylinder enables the support assembly to better adapt to workpieces of different shapes and sizes; by controlling the extension and retraction of the fine-tuning electric push cylinder, the position of the second support roller can be adjusted quickly and accurately, thereby meeting the support position requirements of different workpieces, and the stress wear state of the tailstock spindle can be determined according to the support force conditions, so that the position of the second support roller can be adjusted to reduce the wear of the tailstock spindle and maintain the accuracy of subsequent workpiece processing; 3. The connecting rod mechanism in the adjustment component is usually manufactured and installed using precision machining and assembly processes, and has high reliability and stability; therefore, during long-term use, the adjustment component can maintain high accuracy and stability, reducing downtime and maintenance costs caused by equipment failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a position structure diagram of the tailstock support in the embodiment of the present application; Figure 2 is a structural diagram of the support mechanism in an embodiment of the present application; Figure 3 It is a partial structural diagram of the adjustment component in the embodiment of the present application; Figure 4 1 is a diagram showing the relative positions of the second support roller and the first support roller in the embodiment of the present application; Figure 5 yes Figure 4 A is an enlarged view of the middle image.

[0029] Figure numerals: 100, sliding seat; 200, tailstock body; 300, tailstock sleeve; 400, tailstock spindle; 500, sliding mechanism; 510, first lead screw; 520, rotating handle; 600, supporting mechanism; 610, first supporting frame; 620, adjusting assembly; 621, adjusting cylinder; 622, adjusting rod; 630, arc frame; 631, sliding groove; 640, first slider; 650, first supporting roller; 660, rotating assembly; 661, first Differential gear; 662, second differential gear; 663, third differential gear; 664, chain; 665, transmission gear; 670, supporting assembly; 671, second slider; 672, second support roller; 673, supporting frame; 674, fine-tuning electric push cylinder; 680, adjustment assembly; 681, first connecting rod; 682, third slider; 683, second connecting rod; 684, half gear ring; 685, power gear; 686, driving screw; 691, first mounting frame. DETAILED DESCRIPTION

[0030] The following combination Figures 1 to 5 This application is described in further detail.

[0031] The lathe comprises a bed, a three-jaw chuck rotating at one end of the bed for clamping a workpiece, a turning mechanism moving on the bed for turning the workpiece, and a supporting tailstock for assisting in positioning the workpiece.

[0032] This embodiment discloses a supporting tailstock for a lathe.

[0033] Reference Figure 1 and Figure 2 , a tailstock support for a lathe, comprising: a sliding seat 100 that slides on a bed of the lathe, a tailstock body 200 arranged on the sliding seat 100, a tailstock sleeve 300 arranged on the tailstock body 200, a tailstock spindle 400 that can be disassembled and matched, a sliding mechanism 500 arranged on the bed for driving the sliding seat 100 to slide, and a supporting mechanism 600 arranged on the sliding seat 100 for supporting one end of a workpiece close to the tailstock spindle 400. When the workpiece is processed and fixed, the workpiece is first fixed on a three-jaw chuck of the lathe, and then the sliding seat 100 is driven to slide by the sliding mechanism 500, the sliding seat 100 drives the tailstock body 200, the tailstock sleeve 300 and the tailstock spindle 400 to approach the workpiece, the tailstock spindle 400 contacts the workpiece, the supporting mechanism 600 supports the workpiece, and then the workpiece is turned.

[0034] The sliding mechanism 500 includes a fixed block fixedly connected to the bed, a first lead screw 510 is threadedly connected to the fixed block, one end of the first lead screw 510 passes through the fixed block and is rotatably connected to the sliding seat 100, and the first lead screw 510 is rotatably connected to the bed, and a rotating handle 520 is fixedly connected to the end of the first lead screw 510 away from the sliding seat 100; the tailstock body 200 is fixedly connected to the sliding seat 100, the tailstock sleeve 300 is fixedly connected to the tailstock body 200 and is close to the workpiece, a tapered hole is opened on the tailstock sleeve 300, one end of the tailstock spindle 400 is in the shape of a tapered handle and is inserted into the tapered hole, the end of the tailstock spindle 400 away from the tailstock sleeve 300 is conical, and the end away from the tailstock sleeve 300 is pointed.

[0035] Reference Figure 2 , Figure 3 and Figure 4The supporting mechanism 600 includes a first supporting frame 610 rotatably connected to the sliding seat 100, the first supporting frame 610 is located on the side of the tailstock spindle 400 close to the workpiece, and an adjusting assembly 620 is arranged on the sliding seat 100, and the adjusting assembly 620 includes an adjusting cylinder 621 with two cylinder bodies hinged on the sliding seat 100. In other embodiments, the adjusting cylinder 621 can be replaced by a hydraulic cylinder, an electric push cylinder, etc.; the rotation axis of the cylinder body of the adjusting cylinder 621 is parallel to the rotation axis of the first supporting frame 610, and the piston rods of the two adjusting cylinders 621 are hinged with an adjusting rod 622, and the adjusting rod 622 is fixedly connected to the first supporting frame 610, and the hinge axis of the piston rod of the adjusting cylinder 621 and the adjusting rod 622 is parallel to the rotation axis of the cylinder body; a rotating part is arranged at one end of the first supporting frame 610 away from the sliding seat 100, and the rotating part forms an arc-shaped contact surface for supporting the workpiece.

[0036] The first support frame 610 is rotatably connected with an arc frame 630, and a rotating component 660 is provided on the first support frame 610. The rotating component 660 is connected to the arc frame 630 and drives it to rotate; one end of the arc frame 630 away from the first support frame 610 is bent in an arc shape to form a supporting surface, and two sliding grooves 631 are provided on the arc frame 630, and the opening direction of the sliding groove 631 is toward the center of the supporting surface, and a first slider 640 is slidably connected in the sliding groove 631, and the first slider 640 is fixedly connected with a first mounting frame 691, and a rotating member is provided on the first mounting frame 691, and the rotating member is a first support roller 650, and the first support roller 650 is rotatably connected to the first mounting frame 691, and the axis of the first support roller 650 is parallel to the axis of the workpiece, and the first support roller 650 protrudes from the supporting surface of the arc frame 630.

[0037] Reference Figure 4 and Figure 5 A supporting assembly 670 is also provided on the arc frame 630, and the supporting assembly 670 includes a second slider 671 slidably connected to the supporting surface of the arc frame 630, the sliding axis of the second slider 671 intersects with the extended line of the sliding axis of the first slider 640, and the axis coincides with the radius of a circle with the intersection as the center; a supporting bracket 673 is slidably connected to the second slider 671, and a second supporting roller 672 is rotatably connected to the supporting bracket 673, the rotation axis of the second supporting roller 672 is parallel to the rotation axis of the first supporting roller 650, and a pressure sensor is fixedly connected to the supporting bracket 673, and the pressure sensor is used to measure the force applied to the second supporting roller 672; in order to facilitate the adjustment of the position of the supporting bracket 673, a fine-tuning electric push cylinder 674 is fixedly connected to the second slider 671, and the piston rod of the fine-tuning electric push cylinder 674 is connected to the supporting bracket 673, which can drive the supporting bracket 673 to slide slightly.

[0038] The second slider 671 is provided with an adjustment component 680, which connects the first slider 640 and the second slider 671 and is used to drive the first slider 640 and the second slider 671 to slide synchronously; the adjustment component 680 includes two first connecting rods 681 coaxially rotatably connected to the second slider 671, the first connecting rods 681 are respectively located on both sides of the second slider 671, and the end of the first connecting rod 681 away from the second slider 671 is rotatably connected to the third slider 682, the third slider 682 slides on the arc frame 630, and is located between the first slider 640 and the second slider 671, and the sliding direction of the third slider 682 and the sliding direction of the first slider 640 are both toward the same center of a circle, and the third slider 682 is rotatably connected to the second connecting rod 681. Rod 683, the second connecting rod 683 is of the same length as the first connecting rod 681, and the rotating end of the second connecting rod 683 rotates coaxially with the rotating end of the first connecting rod 681; the end of the second connecting rod 683 away from the third slider 682 is rotatably connected to the first slider 640, and a power gear 685 is rotatably connected to the arc frame 630. A half gear ring 684 is fixedly connected to the first support frame 610, and the curvature of the half gear ring 684 is adapted to the rotation trajectory of the arc frame 630. The power gear 685 meshes with the half gear ring 684, and a driving screw rod 686 is rotatably connected to the arc frame 630. One end of the driving screw rod 686 is threadedly connected to the second slider 671 and pushes the second slider 671 to slide. The driving screw rod 686 is coaxially fixedly connected to the power gear 685.

[0039] The rotating assembly 660 includes a first differential gear 661 fixedly connected to the rotating shaft of the arc frame 630, a second differential gear 662 is rotatably connected to the first support frame 610, a third differential gear 663 meshing with the second differential gear 662 is rotatably connected to the first support frame 610, the third differential gear 663 is meshed with the first differential gear 661, and the transmission ratios of the three are different, a driving member is provided on the first support frame 610, the driving member includes a chain 664 fixedly connected to the sliding seat 100 at both ends, the chain 664 bypasses the rotating shaft of the second differential gear 662, and a transmission gear 665 is rotatably connected to the first support frame 610, the transmission gear 665 is coaxially connected to the second differential gear 662 and meshed with the chain 664.

[0040] In other embodiments, the rotating end of the first connecting rod 681 away from the third sliding block 682 can be rotated on the supporting bracket 673 .

[0041] In other embodiments, the first mounting frame 691 can slide on the first sliding block 640 , and the first sliding block 640 can also be provided with a fine-tuning electric push cylinder 674 to push the first mounting frame 691 to slide.

[0042] The implementation principle of the supporting tailstock for a lathe in the embodiment of the present application is as follows: when turning a workpiece, the workpiece is first placed on the bed of the lathe, and then fixed by a three-jaw chuck, and then the first lead screw 510 is driven to rotate by rotating the rotation handle 520, and the first lead screw 510 drives the sliding seat 100 to approach the workpiece, and the sliding seat 100 drives the tailstock body 200, the tailstock sleeve 300 and the tailstock spindle 400 to approach the workpiece until the tailstock spindle 400 is inserted into the center hole of the workpiece, and then the adjusting cylinder 621 is started and the adjusting cylinder 621 is adjusted. 21 extends and drives the adjusting rod 622 and the first support frame 610 to rotate. During the rotation of the first support frame 610, the chain 664 drives the transmission gear 665 to rotate, the transmission gear 665 drives the second differential gear 662 to rotate, the second differential gear 662 drives the first differential gear 661 to rotate, and the first differential gear 661 drives the arc frame 630 to rotate, so that the arc frame 630 is always perpendicular to the sliding seat 100, thereby making the axes of the first support roller 650 and the second support roller 672 always parallel to the axis of the workpiece.

[0043] During the rotation of the arc frame 630, relative displacement occurs with the half gear ring 684. The half gear ring 684 drives the power gear 685 to rotate, and the power gear 685 drives the driving screw 686 to rotate. The driving screw 686 drives the second slider 671 to slide. The second slider 671 drives the first connecting rod 681 to rotate. The first connecting rod 681 drives the third slider 682 to slide, and drives the second connecting rod 683 to rotate and slide. The second connecting rod 683 drives the first slider 640 to slide, so that the first support roller 650 and the second support roller 672 move synchronously close to the axis of the workpiece.

[0044] After the second support roller 672 comes into contact with the workpiece, the pressure there can be observed using the pressure sensor and adjusted using the fine-tuning electric push cylinder 674 as needed.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A tailstock support for a lathe, characterized in that: include: A sliding seat (100) is slidably arranged on the lathe, close to the clamping chuck of the workpiece; A tailstock body (200) is arranged on the sliding seat (100); A tailstock sleeve (300) is arranged on the tailstock body (200) and is cooperatively connected with a tailstock spindle (400) for abutting against a workpiece; A sliding mechanism (500) is arranged on the lathe and connected to the sliding seat (100) and is used to drive the sliding seat (100) to slide; The support mechanism (600) comprises a first support frame (610) rotatably arranged on the sliding seat (100), a rotating member arranged on the first support frame (610), and an adjusting component (620) arranged on the sliding seat (100) and used for driving the first support frame (610) to rotate, wherein the rotating member is used for supporting the side wall of the workpiece.

2. The supporting tailstock for a lathe according to claim 1, characterized in that: An end of the tailstock spindle (400) away from the tailstock sleeve (300) forms a conical contact surface that facilitates centering.

3. The supporting tailstock for a lathe according to claim 2, characterized in that: The adjusting assembly (620) comprises an adjusting cylinder (621) and an adjusting rod (622); the adjusting rod (622) is arranged on the first support frame (610); the cylinder body of the adjusting cylinder (621) is hinged on the sliding seat (100); the piston rod of the adjusting cylinder (621) is hinged on the adjusting rod (622); as the adjusting cylinder (621) extends, the first support frame (610) connected to the adjusting rod (622) is driven to rotate.

4. The tailstock support for a lathe according to claim 1, characterized in that: An arc frame (630) is arranged on the first support frame (610), and a sliding groove (631) is opened on the arc frame (630), and the sliding groove (631) is opened along the curvature of the arc frame (630), and two first sliding blocks (640) are slidably connected in the sliding groove (631); the rotating member is a first supporting roller (650), and the first supporting roller (650) corresponds to the first sliding block (640), and the first supporting roller (650) rotates on the first sliding block (640), and the first supporting roller (650) protrudes from the end surface of the arc frame (630) close to the workpiece.

5. The tailstock support for a lathe according to claim 4, characterized in that: The arc frame (630) is rotatably arranged on the first support frame (610), and a rotating assembly (660) is arranged on the first support frame (610). The rotating assembly (660) comprises: A first differential gear (661) is fixedly connected to the rotating shaft of the arc-shaped frame (630); A second differential gear (662) rotatably disposed on the first support frame (610); a third differential gear (663) rotatably disposed on the first support frame (610), meshing with the second differential gear (662), and meshing with the first differential gear (661), and having different transmission ratios; A driving member is arranged on the first support frame (610) and is drivingly connected to the second differential gear (662).

6. The tailstock support for a lathe according to claim 5, characterized in that: The driving member comprises: A chain (664), both ends of which are arranged on the sliding seat (100); A transmission gear (665) is rotatably connected to the first support frame (610), is coaxially connected to the second differential gear (662), and is meshed with the chain (664).

7. The tailstock support for a lathe according to claim 4, characterized in that: A supporting assembly (670) is also provided on the arc-shaped frame (630), and the supporting assembly (670) comprises: A second sliding block (671) slides on the arc-shaped frame (630), and a sliding axis intersects with a sliding axis of the first sliding block (640); The second supporting roller (672) is rotatably connected to the second sliding block (671), and its axis is parallel to the first supporting roller (650).

8. The supporting tailstock for a lathe according to claim 7, characterized in that: The supporting assembly (670) further includes: a support frame (673) disposed on the second sliding block (671) and used for providing rotational support for the second supporting roller (672); A pressure sensor is arranged on the support frame (673) and is used to measure the force applied to the second support roller (672).

9. The supporting tailstock for a lathe according to claim 8, characterized in that: The support frame (673) slides on the second sliding block (671), and the sliding direction is the same as the sliding direction of the second sliding block (671). The support assembly (670) further includes: The fine-tuning electric push cylinder (674) is arranged on the second sliding block (671), connected to the supporting frame (673), and is used to drive the supporting frame (673) to slide.

10. The tailstock support for a lathe according to claim 7, characterized in that: The second sliding block (671) is provided with an adjustment component (680), and the adjustment component (680) comprises: Two first connecting rods (681) are provided, and both are rotated on the second sliding block (671); Two third sliders (682) are provided, and both slide on the arc frame (630), and the sliding direction intersects with the sliding direction of the first slider (640); the other end of the first connecting rod (681) rotates on the third slider (682); A second connecting rod (683) having the same length as the first connecting rod (681), one end of which rotates coaxially with the first connecting rod (681) and both rotate on the third sliding block (682), and the other end of which rotates on the first sliding block (640); A half gear ring (684) is arranged on the first support frame (610); A power gear (685) is rotatably disposed on the arc frame (630) and meshes with the half gear ring (684); The driving screw rod (686) is rotatably disposed on the arc frame (630), is coaxially connected to the power gear (685), and is threadedly connected to the second sliding block (671).

Images