Servo tailstock structure of numerical control precision turning center

By designing the CNC precision turning center servo tailstock structure, including the movement of the carrier table driven by the hydraulic cylinder and the adjustment of the shaft tail thimble driven by the servo motor, the problems of high operation difficulty of existing CNC lathes and low accuracy of the hydraulic cylinder are solved, and more efficient workpiece processing and higher precision parts processing are achieved.

CN222856738UActive Publication Date: 2025-05-13三易精密工业(苏州)有限公司
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Patent Information

Application Number
CN202421409657.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-20
Publication Date
2025-05-13
Estimated Expiration
2034-06-20

AI Technical Summary

Technical Problem

The existing CNC lathes are difficult to operate when replacing workpieces, have low working efficiency, and have low working accuracy of hydraulic cylinders, which affects the processing accuracy and working efficiency of parts.

Method used

A CNC precision turning center servo tailstock structure is designed, including a base, a load table, a shaft tail thimble, a lifting mechanism and an adjustment mechanism. The bearing table is driven by the hydraulic cylinder, the servo motor drives the screw to rotate, the limit block slides to adjust the position of the shaft tail thimble, and the fixation of the shaft tail thimble is achieved through the air pump and suction cup.

Benefits of technology

It improves the operation convenience and work efficiency of workpiece replacement, enhances the processing accuracy of parts, reduces wear on the carrier table, and realizes stable fixation of the shaft tail thimble.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222856738U_ABST
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Abstract

The utility model discloses a numerical control precision turning center servo tailstock structure, which relates to the technical field of numerical control lathes and comprises a base, a bearing table movably arranged at the top of the base, a shaft tail ejector pin movably arranged at the top of the bearing table, a lifting mechanism fixedly connected to the top of the base and an adjusting mechanism connected with the bearing table. The lifting mechanism comprises a hydraulic cylinder fixedly connected to the top of the base and used for driving the bearing table to move, and a guide rod fixedly connected to the top of the base and used for limiting the bearing table. The adjusting mechanism comprises a driving piece connected with the bearing table and a mounting plate fixedly connected to the top of the driving piece and used for bearing the shaft tail ejector pin. According to the servo tailstock structure of the numerical control precision turning center, the air pump is started to exhaust air in the suction cup, so that the suction cup is adsorbed on the surface of the bearing table, and a shaft tail ejector pin is fixed.
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Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled lathes, in particular to a servo tailstock structure of a numerically controlled precision turning center. Background Art

[0002] Disks, shafts and other parts are typical parts commonly seen in mechanical processing. The lathes used to process these parts generally include a spindle assembly that clamps and drives one end of the part to rotate, and a shaft tail ejector that presses the other end of the part against the spindle assembly. The shaft tail ejector is fixedly mounted on the tailstock body, and the tailstock body is mounted on the base of the lathe.

[0003] When changing the workpiece, the operator needs to manually push the tailstock body and lock it with screws or a specific locking mechanism. The hydraulic cylinder fixed on the tailstock body drives the sleeve in the tailstock body to extend, thereby tightening the workpiece. The operation is difficult and the work efficiency is low. In addition, the working accuracy of the hydraulic cylinder is low, which not only affects the processing accuracy of the parts, but also affects the work efficiency. Utility Model Content

[0004] The main purpose of the utility model is to provide a servo tailstock structure for a CNC precision turning center, which solves the problems of difficult operation and low work efficiency during the working process by setting a lifting mechanism fixedly connected to the top of the base and an adjusting mechanism connected to the bearing platform; in addition, the working accuracy of the hydraulic cylinder is low, which not only affects the processing accuracy of the parts, but also affects the work efficiency.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A servo tailstock structure of a CNC precision turning center comprises a base, a bearing platform movably arranged on the top of the base, and a shaft tail ejector movably arranged on the top of the bearing platform, and also comprises a lifting mechanism fixedly connected to the top of the base, and an adjusting mechanism connected to the bearing platform;

[0007] The lifting mechanism includes a hydraulic cylinder fixedly connected to the top of the base for driving the bearing platform to move, and a guide rod fixedly connected to the top of the base for limiting the position of the bearing platform;

[0008] The adjustment mechanism includes a driving member connected to the bearing platform, and a mounting plate fixedly connected to the top of the driving member for carrying the shaft tail ejector.

[0009] Preferably, the lifting mechanism further comprises a guide hole provided on the top of the bearing platform, a mounting groove provided on the inner side wall of the guide hole, a pulley rotatably connected to the mounting groove, and a slide groove provided on the outer side wall of the guide rod.

[0010] Preferably, the lifting mechanism further comprises scale lines engraved on the outer side wall of the guide rod, and a movable block rotatably arranged on the top of the supporting platform.

[0011] Preferably, the driving member includes a screw rod fixedly connected to the output end of the servo motor, a movable seat movably arranged on the outer side wall of the screw rod, a limit block fixedly connected to the top of the movable seat, and a limit groove opened on the top of the bearing platform;

[0012] The bottom of the mounting plate is fixedly connected to the top of the limiting block.

[0013] Preferably, the adjustment mechanism further comprises a protection box fixedly connected to the outer side wall of the mounting plate, an electric telescopic rod fixedly connected to the inner top wall of the protection box, and a transmission cover fixedly connected to the output end of the electric telescopic rod.

[0014] Preferably, the adjustment mechanism further comprises a connecting spring fixedly connected to the inner top wall of the transmission cover, a bearing plate fixedly connected to the end surface of the connecting spring, and a suction cup fixedly connected to the bottom of the bearing plate.

[0015] Preferably, the adjustment mechanism also includes an air pump fixedly connected to the bottom of the supporting plate, and an air collecting hood connected to one end of the air pump through a pipeline, and the other end of the air pump is connected to the interior of the suction cup through a pipeline.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. In the utility model, the hydraulic cylinder is started to drive the bearing platform to move up until the axis of the ejector pin at the tail of the shaft coincides with the axis of the main shaft assembly, so as to facilitate the adjustment of the height of use, and then to facilitate the use of lathes of different heights. During this process, the pulley rolls inside the slide groove, so as to improve the stability of the movement of the bearing platform while reducing the wear on the bearing platform.

[0018] 2. In the utility model, by starting the servo motor, the servo motor drives the screw rod to rotate, and then drives the movable seat to make a linear motion. At this time, the limit block will slide inside the limit groove to limit the movable seat, and the limit block will drive the shaft tail ejector to move through the mounting plate during the sliding process, so that the shaft tail ejector presses the part tightly to realize the processing of the part. During this process, the air pump will blow air toward the surface of the bearing platform through the wind collecting hood to remove impurities on the surface of the bearing platform. When the position adjustment of the shaft tail ejector is completed, the electric telescopic rod is started to drive the transmission cover to move down until the bottom end of the transmission cover is in contact with the top end of the bearing platform. At this time, the suction cup will be in contact with the top surface of the bearing platform under the action of the connecting spring, and then the air pump will continue to be started to evacuate the inside of the suction cup to make the suction cup adsorbed on the surface of the bearing platform, thereby realizing the fixation of the shaft tail ejector. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the load-bearing platform of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the protective box of the utility model;

[0022] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure in the middle;

[0023] Figure 5 This is a schematic diagram of the interior of the guide hole of the utility model structure.

[0024] In the figure: 1. base; 2. bearing platform; 3. shaft tail ejector; 401. hydraulic cylinder; 402. guide rod; 403. guide hole; 404. pulley; 405. slide groove; 406. scale line; 407. movable block; 501. servo motor; 502. mounting plate; 503. screw rod; 504. movable seat; 505. limit block; 506. limit groove; 507. protective box; 508. electric telescopic rod; 509. transmission cover; 5010. connecting spring; 5011. bearing plate; 5012. suction cup; 5013. air pump; 5014. wind collecting hood. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] Embodiment 1: Figure 1-5 As shown, a servo tailstock structure of a CNC precision turning center includes a base 1, a bearing platform 2 movably arranged on the top of the base 1, and a shaft tail ejector 3 movably arranged on the top of the bearing platform 2, and also includes a lifting mechanism fixedly connected to the top of the base 1, and an adjusting mechanism connected to the bearing platform 2;

[0027] The lifting mechanism includes a hydraulic cylinder 401 fixedly connected to the top of the base 1 for driving the load-bearing platform 2 to move, and a guide rod 402 fixedly connected to the top of the base 1 for limiting the load-bearing platform 2;

[0028] The adjusting mechanism comprises a driving member connected to the supporting platform 2 , and a mounting plate 502 fixedly connected to the top of the driving member for supporting the shaft tail ejector pin 3 .

[0029] The lifting mechanism also includes a guide hole 403 provided on the top of the supporting platform 2, a mounting groove provided on the inner wall of the guide hole 403, a pulley 404 rotatably connected to the mounting groove, and a slide groove 405 provided on the outer wall of the guide rod 402, wherein the outer wall of the pulley 404 protrudes and extends to the outer surface of the mounting groove and abuts against the inner wall of the slide groove 405. Through the cooperation between the slide groove 405 and the pulley 404, the stability of the movement of the supporting platform 2 is improved while the wear on the supporting platform 2 can be reduced.

[0030] The lifting mechanism also includes a scale line 406 engraved on the outer wall of the guide rod 402 and a movable block 407 rotatably arranged on the top of the supporting platform 2, wherein the outer diameter of the guide rod 402 is smaller than the inner diameter of the guide hole 403.

[0031] By starting the hydraulic cylinder 401, the support platform 2 is driven to move upward until the axis of the tail pin 3 coincides with the axis of the main shaft assembly, so as to facilitate the adjustment of the use height and to facilitate the use of lathes of different heights. During this process, the pulley 404 rolls inside the slide groove 405, so as to improve the stability of the movement of the support platform 2 while reducing the wear on the support platform 2. When it moves to a suitable position, the movable block 407 is rotated to make it fit with the outer surface of the guide rod 402, and then it can be observed. At this time, the position of the upper surface of the movable block 407 and the scale line 406 can be observed to determine whether the height adjustment is completed.

[0032] Embodiment 2: Figure 1-5 As shown, a servo tailstock structure of a CNC precision turning center includes a base 1, a bearing platform 2 movably arranged on the top of the base 1, and a shaft tail ejector 3 movably arranged on the top of the bearing platform 2, and also includes a lifting mechanism fixedly connected to the top of the base 1, and an adjusting mechanism connected to the bearing platform 2;

[0033] The lifting mechanism includes a hydraulic cylinder 401 fixedly connected to the top of the base 1 for driving the load-bearing platform 2 to move, and a guide rod 402 fixedly connected to the top of the base 1 for limiting the load-bearing platform 2;

[0034] The adjusting mechanism comprises a driving member connected to the supporting platform 2 , and a mounting plate 502 fixedly connected to the top of the driving member for supporting the shaft tail ejector pin 3 .

[0035] The driving member includes a screw rod 503 fixedly connected to the output end of the servo motor 501, a movable seat 504 movably arranged on the outer side wall of the screw rod 503, a limit block 505 fixedly connected to the top of the movable seat 504, and a limit groove 506 opened on the top of the carrier 2;

[0036] The bottom of the mounting plate 502 is fixedly connected to the top of the limit block 505 , wherein the cross section of the limit block 505 matches the cross section of the limit slot 506 , and the top of the limit block 505 extends to the outer surface of the support platform 2 through the limit slot 506 .

[0037] The adjustment mechanism also includes a protective box 507 fixedly connected to the outer wall of the mounting plate 502, an electric telescopic rod 508 fixedly connected to the inner top wall of the protective box 507, and a transmission cover 509 fixedly connected to the output end of the electric telescopic rod 508. The transmission cover 509 is driven to move by the electric telescopic rod 508, wherein the top plate of the transmission cover 509 can seal the opening of the protective box 507 to improve the protection of the electric telescopic rod 508.

[0038] The adjustment mechanism also includes a connecting spring 5010 fixedly connected to the inner top wall of the transmission cover 509, a supporting plate 5011 fixedly connected to the end face of the connecting spring 5010, and a suction cup 5012 fixedly connected to the bottom of the supporting plate 5011, wherein the bottom end of the suction cup 5012 extends to the outer surface of the transmission cover 509 under the action of the connecting spring 5010 and the supporting plate 5011, wherein the cross-section of the supporting plate 5011 matches the cross-section of the transmission cover 509.

[0039] The adjustment mechanism also includes an air pump 5013 fixedly connected to the bottom of the supporting plate 5011, and an air collecting hood 5014 connected to one end of the air pump 5013 through a pipeline, and the other end of the air pump 5013 is connected to the interior of the suction cup 5012 through a pipeline, wherein the air pump 5013 is a dual-purpose air pump.

[0040] When the height adjustment is completed, the servo motor 501 is started, so that the servo motor 501 drives the screw rod 503 to rotate, and then drives the movable seat 504 to make a linear motion. At this time, the limit block 505 will slide inside the limit groove 506 to limit the movable seat 504. In the process of sliding, the limit block 505 will drive the shaft tail ejector 3 to move through the mounting plate 502, so that the shaft tail ejector 3 presses the part to realize the processing of the part. In this process, the air pump 5013 will pass through the air collecting cover 5014 toward the surface of the supporting platform 2 The surface of the support platform 2 is blown to remove impurities on the surface of the support platform 2. When the position adjustment of the shaft tail ejector 3 is completed, the transmission cover 509 is driven to move downward by starting the electric telescopic rod 508 until the bottom end of the transmission cover 509 fits with the top of the support platform 2. At this time, the suction cup 5012 will fit with the top surface of the support platform 2 under the action of the connecting spring 5010, and then continue to start the air pump 5013 to evacuate the inside of the suction cup 5012, so that the suction cup 5012 is adsorbed on the surface of the support platform 2, thereby achieving the fixation of the shaft tail ejector 3.

Claims

1. A servo tailstock structure of a CNC precision turning center, comprising a base (1), a bearing platform (2) movably arranged on the top of the base (1), and a shaft tail ejector (3) movably arranged on the top of the bearing platform (2), characterized in that: It also includes a lifting mechanism fixedly connected to the top of the base (1), and an adjusting mechanism connected to the bearing platform (2); The lifting mechanism comprises a hydraulic cylinder (401) fixedly connected to the top of the base (1) for driving the bearing platform (2) to move, and a guide rod (402) fixedly connected to the top of the base (1) for limiting the position of the bearing platform (2); The adjustment mechanism comprises a driving member connected to the supporting platform (2), and a mounting plate (502) fixedly connected to the top of the driving member and used for supporting the shaft tail ejector pin (3).

2. The servo tailstock structure of a CNC precision turning center according to claim 1, characterized in that: The lifting mechanism further comprises a guide hole (403) provided on the top of the bearing platform (2), a mounting groove provided on the inner side wall of the guide hole (403), a pulley (404) rotatably connected to the mounting groove, and a slide groove (405) provided on the outer side wall of the guide rod (402).

3. The servo tailstock structure of a CNC precision turning center according to claim 2 is characterized in that: The lifting mechanism further comprises a scale line (406) engraved on the outer side wall of the guide rod (402), and a movable block (407) rotatably arranged on the top of the bearing platform (2).

4. The servo tailstock structure of a CNC precision turning center according to claim 3 is characterized in that: The driving member comprises a screw rod (503) fixedly connected to the output end of the servo motor (501), a movable seat (504) movably arranged on the outer side wall of the screw rod (503), a limiting block (505) fixedly connected to the top of the movable seat (504), and a limiting groove (506) provided on the top of the bearing platform (2); The bottom of the mounting plate (502) is fixedly connected to the top of the limiting block (505).

5. The servo tailstock structure of a CNC precision turning center according to claim 4, characterized in that: The adjustment mechanism also includes a protection box (507) fixedly connected to the outer wall of the mounting plate (502), an electric telescopic rod (508) fixedly connected to the inner top wall of the protection box (507), and a transmission cover (509) fixedly connected to the output end of the electric telescopic rod (508).

6. The servo tailstock structure of a CNC precision turning center according to claim 5, characterized in that: The adjustment mechanism also includes a connecting spring (5010) fixedly connected to the inner top wall of the transmission cover (509), a bearing plate (5011) fixedly connected to the end surface of the connecting spring (5010), and a suction cup (5012) fixedly connected to the bottom of the bearing plate (5011).

7. The servo tailstock structure of a CNC precision turning center according to claim 6, characterized in that: The regulating mechanism further comprises an air pump (5013) fixedly connected to the bottom of the supporting plate (5011), and an air collecting hood (5014) connected to one end of the air pump (5013) through a pipeline, and the other end of the air pump (5013) is connected to the inside of the suction cup (5012) through a pipeline.