Lead screw straightness calibration device

Abstract

The embodiment of the utility model provides a lead screw straightness calibration device, and relates to the technical field of lead screw calibration, the lead screw straightness calibration device comprises a base body and placement seats symmetrically arranged at the center position of the upper end face of the base body; the calibration assembly comprises a supporting frame, a hydraulic rod, a calibration frame, a calibration shaft and a limiting mechanism, and the limiting mechanism is arranged on the inner side of the calibration assembly. And the driving mechanism is arranged on the lower end face of the base body, and clamping assemblies are symmetrically arranged on the left side and the right side of the base body. The connecting gear in the clamping assembly can be rotationally adjusted through the arranged driving mechanism, when the connecting gear is adjusted, the clamping plate can be driven to rotate through the eccentric shaft, and due to the fact that the clamping plate can be adjusted in an inward or outward expansion mode, clamping adjustment can be conducted according to the different diameters of the lead screw, and the clamping precision is improved. And meanwhile, the equipment can automatically clamp the lead screw, and the situation that the calibration efficiency of the equipment is affected due to manual clamping of workers can be avoided.

Description

Technical Field

[0001] The present application relates to the technical field of lead screw calibration, and in particular to a lead screw straightness calibration device. Background Art

[0002] Ball screws are ideal products for converting rotary motion into linear motion, or converting linear motion into rotary motion. Ball screws are the most commonly used transmission components in tool machinery and precision machinery. Their main function is to convert rotary motion into linear motion, or torque into axial repetitive force, while having the characteristics of high precision, reversibility and high efficiency. Due to their low friction resistance, ball screws are widely used in various industrial equipment and precision instruments.

[0003] The existing lead screws are prone to local bending during the production process, so the operator needs to straighten the lead screws during the production process, and the lead screws need to be clamped repeatedly during calibration. However, due to the different diameters of the processed lead screws, most of the existing calibration equipment requires the staff to manually clamp and limit the lead screw. Although the lead screw can be clamped, the clamping efficiency is low, which affects the subsequent lead screw calibration efficiency. Utility Model Content

[0004] An embodiment of the present application provides a lead screw straightness calibration device to solve the current problem of inconvenience in adjusting and clamping the lead screw.

[0005] The embodiment of the present application provides a screw straightness calibration device, comprising a base body and a placement seat symmetrically arranged at the central position of the upper end surface of the base body;

[0006] The calibration assembly includes a support frame, a hydraulic rod, a calibration frame, and a calibration shaft. The support frame is arranged on the upper end surface of the base body, the hydraulic rod is fixed at the central position of the support frame, the calibration frame is arranged at the output end of the hydraulic rod, the calibration shaft is arranged on the inner side of the calibration frame, and the calibration seat is arranged at the lower end of the calibration shaft and located at the upper end of the support frame;

[0007] A limiting mechanism, disposed on the inner side of the calibration assembly, for limiting the position of the calibration frame;

[0008] The driving mechanism is arranged on the lower end surface of the base body. The left and right sides of the base body are symmetrically provided with clamping components, and the driving mechanism can be connected to the clamping components.

[0009] In a feasible implementation, a slide groove is provided on the upper end surface of the base body, the limiting slide plate is fixed to the lower end surface of the support frame, and the cross section of the limiting slide plate is a "T"-shaped structure and slides along the slide groove.

[0010] In a feasible implementation, the placement seat and the calibration seat have matching external structures, and a trapezoidal groove is provided in the center of both.

[0011] In a feasible implementation, the limiting mechanism includes a limiting rod and a reset spring, the limiting rod is symmetrically fixed on the left and right sides of the calibration frame, and the lower end of the limiting rod is slidably engaged on the inner side of the calibration seat, the reset spring is sleeved on the outer surface of the limiting rod, and the lower end of the reset spring is in contact with the upper end surface of the calibration seat.

[0012] In a feasible implementation, the driving mechanism includes a servo motor, a connecting screw, a connecting plate, and an adjusting gear disc. The servo motor is fixed at the central position of the lower end surface of the base body, the connecting screw is fixed to the output end of the servo motor, the connecting plate is threadedly connected to the outer surface of the connecting screw, and the cross-section of the connecting plate is a "U"-shaped structure. The adjusting gear disc is fixed at the left and right ends of the connecting plate, and racks are provided on the left and right sides of the adjusting gear disc.

[0013] In a feasible implementation, the lower end surface of the base body is symmetrically provided with limiting rods, and the limiting rods can be slidably engaged in the interior of the connecting plate.

[0014] In a feasible implementation, the clamping assembly includes a connecting gear, an eccentric shaft, a clamping plate, a limiting shaft and a clamping groove, the connecting gear is symmetrically meshed and connected to the left and right sides of the adjusting gear disk, the eccentric shaft is fixed on the outside of the connecting gear, the clamping plate is sleeved on the outer surface of the eccentric shaft, the limiting shaft is arranged at the central position of the clamping plate, and the other end of the limiting shaft is connected to the base body, and the clamping groove is arranged on the inner side of the clamping plate and connected to one end of the lead screw.

[0015] The embodiment of the present application provides a lead screw straightness calibration device;

[0016] The present application document can calibrate the lead screw by means of the calibration component set up, and the limit slide set up can slide in the slide groove to adjust the position of the calibration component, and then the lead screw can be calibrated at different positions, thereby ensuring the efficiency of equipment calibration. Then, the limiting mechanism set up can limit the position of the calibration frame to avoid a large deviation of the calibration frame, which may affect subsequent calibration processing.

[0017] The driving mechanism set up in the present application document can rotate and adjust the connecting gear in the clamping assembly. When the connecting gear is adjusted, the clamping plate can be driven to rotate through the eccentric shaft. Since the clamping plate can be adjusted to expand inward or outward, the clamping can be adjusted according to the different diameters of the screw, so that the device can lock the screw. At the same time, the device can automatically clamp the screw, which can avoid manual clamping by the staff and affect the efficiency of the equipment calibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present application and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 This is a schematic diagram of the top view of the lead screw straightness calibration device of the present application;

[0020] Figure 2 This is a bottom view schematic diagram of the lead screw straightness calibration device of the present application structure;

[0021] Figure 3 This is a left-side structural schematic diagram of the lead screw straightness calibration device of the present application;

[0022] Figure 4 This application Figure 3 A schematic diagram of the partially enlarged structure at center A;

[0023] Figure 5 It is a schematic diagram of the top view structure of the calibration component of this application;

[0024] Figure 6 It is a schematic diagram of the connecting plate structure of this application.

[0025] Description of reference numerals:

[0026] 100-base body; 200-placement seat; 300-calibration component; 400-limiting mechanism; 500-driving mechanism; 600-clamping component;

[0027] 310-support frame; 320-limiting slide plate; 330-hydraulic rod; 340-calibration frame; 350-calibration axis; 360-calibration seat;

[0028] 410-limiting rod; 420-return spring;

[0029] 510-servo motor; 520-connecting screw rod; 530-connecting plate; 540-adjusting gear disc; 600-clamping assembly;

[0030] 610-connecting gear; 620-eccentric shaft; 630-clamping plate; 640-limiting shaft; 650-clamping groove. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions in this application, the following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0032] Please refer to Figure 1-Figure 6 A screw straightness calibration device includes a base body 100 and a placement seat 200 symmetrically arranged at the center of the upper end surface of the base body 100, a calibration component 300, a limiting mechanism 400, a driving mechanism 500 and a clamping component 600.

[0033] The calibration assembly 300 includes a support frame 310, a hydraulic rod 330, a calibration frame 340, and a calibration shaft 350. The support frame 310 is arranged on the upper end surface of the base body 100, the hydraulic rod 330 is fixed at the central position of the support frame 310, the calibration frame 340 is arranged at the output end of the hydraulic rod 330, the calibration shaft 350 is arranged on the inner side of the calibration frame 340, and the calibration seat 360 is arranged below the calibration shaft 350 and is located at the upper end of the support frame 310.

[0034] The limiting mechanism 400 is disposed on the inner side of the calibration assembly 300 and is used to limit the position of the calibration frame 340 .

[0035] The driving mechanism 500 is disposed on the lower end surface of the base body 100 . The clamping assemblies 600 are symmetrically disposed on the left and right sides of the base body 100 , and the driving mechanism 500 can be connected to the clamping assemblies 600 .

[0036] Please refer to Figure 1 , Figure 2 , Figure 5 and Figure 6 The upper end surface of the base body 100 is provided with a slide groove, and the lower end surface of the support frame 310 is fixed with a limit slide plate 320, and the cross section of the limit slide plate 320 is a "T"-shaped structure and slides along the slide groove. The position of the limit slide plate 320 can be limited by the provided slide groove, and the limit slide plate 320 can be prevented from being offset. Since the stability of the limit slide plate 320 can be ensured, the support frame 310 can be prevented from being offset and shaking, so that the subsequent calibration of the lead screw can be facilitated.

[0037] The placement seat 200 and the calibration seat 360 have the same external structure, and a trapezoidal groove is provided in the center of the two. By cooperating with the placement seat 200 and the calibration seat 360, the position of the lead screw can be supported and limited, and the lead screw can be prevented from deflecting, so as to facilitate the subsequent calibration of the lead screw.

[0038] If the lead screw needs to be calibrated, the lead screw can be placed on the upper end of the placement seat 200 and the calibration seat 360, and the lead screw can be rotated so that its protruding point is located at the upper end, and the lead screw can be clamped by the subsequent driving mechanism 500 and the clamping assembly 600. Then, the support frame 310 is pulled and adjusted so that the calibration frame 340 and the lead screw maintain the same vertical center line with their protruding points, and the hydraulic rod 330 is opened. The set hydraulic rod 330 can push the calibration frame 340 downward, so that the calibration shaft 350 can contact the lead screw, and with the cooperation of the calibration seat 360, the lead screw can be calibrated.

[0039] The limiting mechanism 400 includes a limiting rod 410 and a return spring 420. The limiting rod 410 is symmetrically fixed on the left and right sides of the calibration frame 340, and the lower end of the limiting rod 410 is slidably engaged with the inner side of the calibration seat 360. The return spring 420 is sleeved on the outer surface of the limiting rod 410, and the lower end of the return spring 420 is in contact with the upper end surface of the calibration seat 360. When the calibration frame 340 is pushed downward, the limiting rod 410 can slide along the calibration seat 360 to limit the position of the calibration frame 340, thereby preventing the calibration frame 340 from being offset, and the return spring 420 can ensure the stability of the upper and lower adjustments of the limiting rod 410, thereby further improving the stability of the equipment.

[0040] Please refer to Figure 1-Figure 4 The driving mechanism 500 includes a servo motor 510, a connecting screw 520, a connecting plate 530, and an adjusting toothed disc 540. The servo motor 510 is fixed at the central position of the lower end surface of the base body 100, the connecting screw 520 is fixed at the output end of the servo motor 510, the connecting plate 530 is threadedly connected to the outer surface of the connecting screw 520, and the cross section of the connecting plate 530 is a "U"-shaped structure, and the adjusting toothed disc 540 is fixed at the left and right ends of the connecting plate 530, and racks are arranged on the left and right sides of the adjusting toothed disc 540. The servo motor 510 can drive the connecting screw 520 to rotate, and when the connecting screw 520 rotates, the position of the connecting plate 530 can be adjusted, so that the position of the clamping assembly 600 can be adjusted by adjusting the toothed disc 540.

[0041] The lower end surface of the base body 100 is symmetrically provided with limiting rods, which can be slidably engaged in the connection plate 530. The limiting rods can limit the position of the connection plate 530, which can prevent the connection plate 530 from deviating, thereby facilitating the stability of the subsequent up and down adjustment of the connection plate 530.

[0042] The clamping assembly 600 includes a connecting gear 610, an eccentric shaft 620, a clamping plate 630, a limiting shaft 640 and a clamping groove 650. The connecting gear 610 is symmetrically meshed and connected to the left and right sides of the adjusting toothed disc 540. The eccentric shaft 620 is fixed to the outside of the connecting gear 610. The clamping plate 630 is sleeved on the outer surface of the eccentric shaft 620. The limiting shaft 640 is arranged at the central position of the clamping plate 630, and the other end of the limiting shaft 640 is connected to the base body 100. The clamping groove 650 is arranged on the inner side of the clamping plate 630 and connected to one end of the lead screw. The racks on both sides of the adjusting toothed disc 540 can mesh with the connecting gear 610, so that the angle of the connecting gear 610 can be adjusted. Then, the eccentric shaft 620 cooperates with the limiting shaft 640 to adjust the angle of the clamping plate 630, so that the lead screw can be locked.

[0043] If the lead screw needs to be clamped, the servo motor 510 can be turned on. When the servo motor 510 drives the connecting lead screw 520 to rotate, the connecting plate 530 can be adjusted downward, and then the connecting gear 610 can be driven to rotate by adjusting the racks on both sides of the toothed disk 540. When the connecting gear 610 rotates inward at the same time, the clamping plate 630 can be expanded outward at the same time through the eccentric shaft 620. Then, the clamping plate 630 is limited by the limiting shaft 640, so that the clamping groove 650 on the inner side of the clamping plate 630 can contact the surface of the lead screw, thereby preventing the lead screw from deviating and shaking.

[0044] In some examples, anti-skid grooves or anti-skid rubber pads may be provided on the inner wall of the clamping groove 650 to ensure the clamping effect on the lead screw.

[0045] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on the several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0046] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A screw straightness calibration device, characterized in that: It comprises a base body (100) and a placement seat (200) symmetrically arranged at the center of the upper end surface of the base body (100); The calibration assembly (300) comprises a support frame (310), a hydraulic rod (330), a calibration frame (340), a calibration shaft (350) and a calibration seat (360), wherein the support frame (310) is arranged on the upper end surface of the base body (100), the hydraulic rod (330) is fixed at the central position of the support frame (310), the calibration frame (340) is arranged at the output end of the hydraulic rod (330), the calibration shaft (350) is arranged on the inner side of the calibration frame (340), and the calibration seat (360) is arranged at the lower end of the calibration shaft (350) and is located at the upper end of the support frame (310); A limiting mechanism (400) is arranged inside the calibration component (300) and is used to limit the position of the calibration frame (340); The driving mechanism (500) is arranged on the lower end surface of the base body (100), and the clamping assemblies (600) are symmetrically arranged on the left and right sides of the base body (100), and the driving mechanism (500) can be connected to the clamping assemblies (600).

2. A screw straightness calibration device according to claim 1, characterized in that: The upper end surface of the base body (100) is provided with a slide groove, and the lower end surface of the support frame (310) is fixed with a limiting slide plate (320), and the cross section of the limiting slide plate (320) is a "T"-shaped structure and slides along the slide groove.

3. A screw straightness calibration device according to claim 2, characterized in that: The placement seat (200) and the calibration seat (360) have matching external shapes and structures, and a trapezoidal groove is provided in the center of both.

4. A screw straightness calibration device according to claim 3, characterized in that: The limiting mechanism (400) includes a limiting rod (410) and a reset spring (420), wherein the limiting rod (410) is symmetrically fixed on the left and right sides of the calibration frame (340), and the lower end of the limiting rod (410) is slidably engaged with the inner side of the calibration seat (360), and the reset spring (420) is sleeved on the outer surface of the limiting rod (410), and the lower end of the reset spring (420) is in contact with the upper end surface of the calibration seat (360).

5. A screw straightness calibration device according to claim 4, characterized in that: The driving mechanism (500) comprises a servo motor (510), a connecting screw rod (520), a connecting plate (530), and an adjusting toothed disc (540); the servo motor (510) is fixed at the central position of the lower end surface of the base body (100); the connecting screw rod (520) is fixed to the output end of the servo motor (510); the connecting plate (530) is threadedly connected to the outer surface of the connecting screw rod (520); the cross section of the connecting plate (530) is a "U"-shaped structure; the adjusting toothed disc (540) is fixed to the left and right ends of the connecting plate (530); and racks are provided on the left and right sides of the adjusting toothed disc (540).

6. A screw straightness calibration device according to claim 5, characterized in that: The lower end surface of the base body (100) is symmetrically provided with limiting rods, and the limiting rods can be slidably engaged in the interior of the connecting plate (530).

7. A screw straightness calibration device according to claim 5, characterized in that: The clamping assembly (600) includes a connecting gear (610), an eccentric shaft (620), a clamping plate (630), a limiting shaft (640) and a clamping groove (650); the connecting gear (610) is symmetrically meshed and connected to the left and right sides of the adjusting toothed disc (540); the eccentric shaft (620) is fixed on the outside of the connecting gear (610); the clamping plate (630) is sleeved on the outer surface of the eccentric shaft (620); the limiting shaft (640) is arranged at the central position of the clamping plate (630), and the other end of the limiting shaft (640) is connected to the base body (100); the clamping groove (650) is arranged on the inner side of the clamping plate (630) and is connected to one end of the lead screw.

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