Numerical control machining center mechanical auxiliary positioning tooling

Abstract

The utility model discloses a numerical control machining center mechanical type auxiliary positioning frock, including work platform, the upper surface of work platform is equipped with the clamping device for fixing the object to be bent, still be equipped with angle marking ruler, the lower surface of work platform is equipped with angle adjusting device, with angle marking ruler cooperation uses, realizes the calibration to the bending angle of object to be bent, the lower surface of work platform still is equipped with limiting device, is positioned to angle adjusting device for, guarantees the stability of angle adjustment. The utility model can reach the accurate positioning steel pipe bending angle's purpose, has solved the problem that the steel pipe bending angle is easy to appear error, has greatly promoted the practical effect. Meanwhile, still can carry out the clamping positioning to different diameter's steel pipe, guarantees the stability of steel pipe, is favorable for the subsequent bending operation to the staff, and is convenient for operating.

Description

Technical Field

[0001] This utility model belongs to the field of CNC technology, and in particular to a mechanical auxiliary positioning fixture for CNC machining centers. Background Technology

[0002] Numerical control technology is a technology that uses digital information to control mechanical motion and working processes. It is a fundamental technology of modern manufacturing that integrates traditional mechanical manufacturing technology, computer technology, modern control technology, sensing and detection technology, network communication technology, and opto-mechatronics technology. It features high precision, high efficiency, and flexible automation, and plays a crucial role in realizing flexible automation, integration, and intelligence in the manufacturing industry.

[0003] Chinese patent CN214866363U discloses a CNC bending device, including a worktable with two parallel positioning mechanisms and two parallel columns symmetrically arranged on it. A straight steel pipe resting on the worktable table rests against the side of the columns and is axially clamped and positioned by the two positioning mechanisms. It also includes a hydraulic cylinder vertically fixed above the worktable. The pushing end of the hydraulic cylinder is provided with two parallel vertical sleeves through a connecting plate. The vertical sleeves are concentrically aligned with the columns. A bending mechanism is provided at the bottom of each of the two vertical sleeves. A pushing mechanism for flattening and feeding U-shaped steel pipes is also provided on the worktable. A feeding slope is connected to the edge of the worktable on the same side as the straight steel pipe. A belt conveyor is provided at the lower end of the feeding slope.

[0004] Although the above-mentioned method has good bending effect and high efficiency, it is difficult to accurately position the bending angle of the steel pipe. When bending the steel pipe, the difference in the diameter of the steel pipe can easily lead to bending error. Utility Model Content

[0005] The purpose of this invention is to provide a mechanical auxiliary positioning fixture for CNC machining centers to solve the problem of accurately positioning the bending angle of steel pipes in the prior art.

[0006] The technical solution to achieve the purpose of this utility model is as follows: a mechanical auxiliary positioning fixture for a CNC machining center, including a work platform, the upper surface of which is provided with a clamping device for fixing the object to be bent, and also provided with an angle scale; the lower surface of the work platform is provided with an angle adjustment device, which is used in conjunction with the angle scale to calibrate the bending angle of the object to be bent; the lower surface of the work platform is also provided with a limiting device for limiting the angle adjustment device to ensure the stability of the angle adjustment.

[0007] Furthermore, the angle adjustment device includes a control housing fixed to the lower surface of the work platform. A linkage central shaft is rotatably connected to the inner wall of the control housing. A control disk is fixedly connected to the top of the linkage central shaft. A blocking guide plate is fixedly connected to the outer circumferential surface of the control disk. The blocking guide plate extends out of the upper surface of the work platform and serves as a pointer to the angle scale, while also limiting the bending portion of the object to be bent. The linkage central shaft is driven to rotate by a drive device, which in turn drives the blocking guide plate to rotate, thereby achieving angle adjustment. When the angle pointed to by the blocking guide plate reaches the required angle, the linkage central shaft is limited and locked by the limiting device.

[0008] Furthermore, a restricted turntable is fixedly connected to the bottom of the linkage central shaft, and the limiting device limits and locks the linkage central shaft by limiting and locking the restricted turntable.

[0009] Furthermore, the limiting device includes: a positioning limiting member rotatably connected to the outside of the control housing, and a protective housing fixedly connected to the outside of the control housing; a pressure-applying pin is slidably connected to the inner wall of the protective housing; the middle part of the positioning limiting member is rotatably connected to the control housing, one end is fixedly connected to a positioning pin, and the other end contacts the pressure-applying pin, and the pressure-applying pin applies a certain pushing force to the positioning limiting member, so that the positioning pin is inserted into the groove opened in the restricted turntable to achieve limiting and locking of the restricted turntable; by pressing the other end of the positioning limiting member to generate a certain squeezing force on the pressure-applying pin, the pressure-applying pin slides along the inner wall of the protective housing, and the positioning limiting member rotates with the junction with the control housing as the origin, so that the positioning pin moves away from the groove opened on the restricted turntable to achieve unlocking of the restricted turntable.

[0010] Furthermore, a tough spring is fixedly connected to the inner wall of the protective shell, and one end of the tough spring is fixedly connected to the pressure-applying top column.

[0011] Furthermore, the driving device includes a hand-controlled turntable fixedly installed at the bottom of the restricted turntable. Rotating the hand-controlled turntable drives the restricted turntable to rotate, thereby driving the linkage central shaft to rotate.

[0012] Furthermore, the outer circumferential surface of the hand-controlled turntable is provided with anti-slip texture.

[0013] Furthermore, the clamping device includes a first clamping plate and a second clamping plate disposed on the upper surface of the work platform, forming an area for clamping and fixing the object to be bent, and capable of withstanding the force generated when the object is bent; the first clamping plate is fixedly installed on the work platform, and the second clamping plate is movably installed on the work platform. The position of the second clamping plate is adjusted by the adjusting device to change the distance between it and the first clamping plate, thereby realizing the clamping or release of the object to be bent.

[0014] Furthermore, the adjustment device includes a threaded support plate fixedly installed on the upper surface of the work platform. A T-shaped screw is threadedly connected to the threaded support plate. One end of the T-shaped screw passes through the threaded support plate and is fixedly connected to the second clamping plate. By rotating the T-shaped screw, the second clamping plate is moved closer to or away from the first clamping plate.

[0015] Furthermore, the lower surface of the work platform is fixedly connected with multiple support legs, and the bottom of the support legs is provided with anti-slip pads.

[0016] Compared with the prior art, the significant advantages of this utility model are:

[0017] (1) This utility model, through the setting of a control shell, a linkage central shaft, a control plate, a blocking guide plate, a positioning limiting component, a positioning pin, a restricted turntable, a protective shell, a tough spring, a pressure top column, and a manual control turntable, can achieve the purpose of accurately positioning the bending angle of the steel pipe, solve the problem that the bending angle of the steel pipe is prone to error, and greatly improve the practical effect.

[0018] (2) This utility model can clamp and position steel pipes of different diameters by setting up a working platform, a scale, a bending force-bearing component, a threaded support plate, a T-shaped screw, a limiting pressure plate, and a support leg, so as to ensure the stability of the steel pipes, which is beneficial to subsequent bending operations and convenient for workers to operate.

[0019] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the mechanical auxiliary positioning fixture for a CNC machining center in one embodiment.

[0021] Figure 2 This is a three-dimensional structural diagram of the control housing in one embodiment.

[0022] Figure 3 This is a three-dimensional structural diagram of the interior of the control housing in one embodiment.

[0023] Figure 4 This is a three-dimensional structural diagram of the interior of the protective housing in one embodiment. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0025] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0026] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] In one embodiment, combined Figure 1 This utility model provides a mechanical auxiliary positioning fixture for a CNC machining center, including a work platform 1. The upper surface of the work platform 1 is provided with a clamping device for fixing the object to be bent, and also with an angle scale 13. The lower surface of the work platform 1 is provided with an angle adjustment device, which works in conjunction with the angle scale to calibrate the bending angle of the object to be bent. The lower surface of the work platform 1 is also provided with a limiting device for limiting the angle adjustment device to ensure the stability of the angle adjustment.

[0028] Here, the object to be bent includes, but is not limited to, steel pipes.

[0029] Here, angle scale 13 is set up to display the bending angle of the steel pipe more intuitively, making it easier for staff to observe and make subsequent adjustments.

[0030] Furthermore, in one embodiment, combined with Figure 2 and Figure 3 The angle adjustment device includes a control housing 2 fixed to the lower surface of the work platform 1. A linkage central shaft 3 is rotatably connected to the inner wall of the control housing 2. A control disk 4 is fixedly connected to the top of the linkage central shaft 3. A blocking guide plate 5 is fixedly connected to the outer circumferential surface of the control disk 4. The blocking guide plate 5 extends out of the upper surface of the work platform 1 and serves as a pointer of the angle scale, while also limiting the bending part of the object to be bent. The linkage central shaft 3 is driven to rotate by a drive device, which in turn drives the blocking guide plate 5 to rotate, thereby achieving angle adjustment. When the angle pointed to by the blocking guide plate 5 reaches the required angle, the linkage central shaft 3 is limited and locked by the limiting device.

[0031] Here, the control panel 4 and the blocking guide plate 5 are directly connected and maintain a linkage effect. The blocking guide plate 5, in cooperation with the angle scale 13, can clearly define the angle of the steel pipe bending. Furthermore, the setting of the blocking guide plate 5 can block the bent part of the steel pipe to prevent the steel pipe from bending excessively, thereby achieving the purpose of auxiliary positioning and greatly increasing the practicality of the device of this application.

[0032] Preferably, in some embodiments, a restricted turntable 8 is fixedly connected to the bottom of the linkage central shaft 3, and the limiting device limits and locks the linkage central shaft 3 by limiting and locking the restricted turntable 8.

[0033] Preferably, in some embodiments, the limiting device includes: a positioning limiting member 6 rotatably connected to the outside of the control housing 2, and a protective housing 9 fixedly connected to the outside of the control housing 2; a pressure-applying top post 11 is slidably connected to the inner wall of the protective housing 9; the middle part of the positioning limiting member 6 is rotatably connected to the control housing 2, one end is fixedly connected to a positioning pin 7, and the other end contacts the pressure-applying top post 11, and the pressure-applying top post 11 applies a certain pushing force to the positioning limiting member 6, so that the positioning pin 7 is inserted into the groove opened in the restricted turntable 8 to realize the limiting and locking of the restricted turntable 8, ensuring the stability of the restricted turntable 8, and thus helping to stabilize subsequent components; by pressing the other end of the positioning limiting member 6 to generate a certain squeezing force on the pressure-applying top post 11, the pressure-applying top post 11 slides along the inner wall of the protective housing 9, and the positioning limiting member 6 rotates with the junction with the control housing 2 as the origin, so that the positioning pin 7 moves away from the groove opened on the restricted turntable 8 to realize the unlocking of the restricted turntable 8.

[0034] Here, the setting of the pressure-applying top column allows the pressure-applying top column to be stably reset and applies a continuous force to the pressure-applying top column, thereby causing the pressure-applying top column to hit the positioning limiter.

[0035] Preferably, in some embodiments, the positioning limiter 6 and the positioning pin 7 are integrated into one unit.

[0036] Preferably, in some embodiments, combined with Figure 4 A tough spring 10 is fixedly connected to the inner wall of the protective shell 9, and one end of the tough spring 10 is fixedly connected to the pressure-applying top column 11.

[0037] Here, by utilizing the rebound characteristics of the spring 10 itself, the pressure-applying top post 11 can be effectively pushed to reset, so that the pressure-applying top post 11 hits the positioning limiter 6, thereby applying force to the positioning limiter 6. The inner wall of the protective shell 9 is slidably connected to the pressure-applying top post 11, and the protective shell 9 will apply a control effect to the pressure-applying top post 11 to ensure the direction in which the pressure-applying top post 11 can move and prevent tilting.

[0038] Preferably, in some embodiments, the driving device includes a hand-operated turntable 12 fixedly installed at the bottom of the restricted turntable 8. Rotating the hand-operated turntable 12 drives the restricted turntable 8 to rotate, thereby driving the linkage central shaft 3 to rotate. Preferably, the outer circumferential surface of the hand-operated turntable 12 is provided with anti-slip texture.

[0039] Here, a manual turntable 12 is provided to facilitate the operation of the restricted turntable 8 by staff.

[0040] The anti-slip texture design prevents slippage during the rotation of the hand control dial.

[0041] Here, other electric or automated drive devices can also be used, as long as they can drive the central shaft 3 to rotate.

[0042] Furthermore, in one embodiment, the clamping device includes a first clamping plate (bending force-bearing member 14) and a second clamping plate (restricting pressure plate 17) disposed on the upper surface of the working platform 1. The two form an area for clamping and fixing the object to be bent, and can withstand the force generated when the object to be bent is bent. The first clamping plate is fixedly installed on the working platform 1, and the second clamping plate is movably installed on the working platform 1. The position of the second clamping plate is adjusted by the adjusting device to change the distance between it and the first clamping plate, thereby realizing the clamping or release of the object to be bent.

[0043] Preferably, in some embodiments, the adjusting device includes a threaded support plate 15 fixedly installed on the upper surface of the working platform 1, a T-shaped screw 16 threadedly connected to the threaded support plate 15, one end of the T-shaped screw 16 passing through the threaded support plate 15 and fixedly connected to the second clamping plate, and by rotating the T-shaped screw 16, the second clamping plate is moved closer to or away from the first clamping plate.

[0044] Furthermore, in one embodiment, a plurality of support legs 18 are fixedly connected to the lower surface of the work platform 1, and the bottom of the support legs 18 is provided with anti-slip pads. Preferably, four support legs are provided.

[0045] Here, the support legs are installed to effectively support the work platform 1 and ensure its stability, preventing tilting. The anti-slip pads increase the frictional resistance with the ground, preventing the overall fixture from changing position and enhancing stability.

[0046] The working principle of this utility model tooling is explained in detail below.

[0047] In use, the steel pipe is placed between the bending force-bearing component 14 and the limiting pressure plate 17. By manually rotating the T-shaped screw 16, the T-shaped screw 16 and the threaded support plate 15 will move together, causing the T-shaped screw 16 to push the limiting pressure plate 17 to move horizontally, thereby clamping the steel pipe and ensuring its stability. Then, according to the required bending angle of the steel pipe, the manual control turntable 12 is rotated again by hand. This causes the linkage central shaft 3 to rotate within the control housing 2 via the limiting turntable 8, and then the control plate 4 drives the guard plate 5 to rotate, thereby changing the orientation of the guard plate 5. The guard plate 5 interacts with the scale 1. 3. When used in conjunction, the maximum bendable angle of the steel pipe is determined. At this time, under the elasticity of the spring 10, the positioning limiter 6 will be pushed to move by the pressure top column 11. The positioning limiter 6 will rotate with the junction with the control housing 2 as the origin, so that the positioning pin 7 connected with the positioning limiter 6 is inserted into the groove of the restricted turntable 8, thereby limiting the restricted turntable 8 and ensuring the stability of the grid pointing plate 5. Finally, the steel pipe is bent by the external bending equipment so that the bent part of the steel pipe contacts the grid pointing plate 5, thereby achieving the required bending angle of the steel pipe and thus providing auxiliary positioning for the bent part of the steel pipe.

[0048] It should be noted that for components without special structural limitations, any component that can achieve the corresponding function in the existing technology is acceptable.

[0049] It should also be noted that the above-mentioned settings, installations, connections, and fixations can be made using, but are not limited to, bolts, threads, etc. Any existing fixed or movable connection scheme can be adapted, as long as the corresponding function can be achieved.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model without departing from its spirit and scope should be included within the protection scope of this utility model.

Claims

1. A mechanical auxiliary positioning fixture for a CNC machining center, comprising a work platform (1), characterized in that, The upper surface of the work platform (1) is provided with a clamping device for fixing the object to be bent, and also with an angle scale; the lower surface of the work platform (1) is provided with an angle adjustment device, which is used in conjunction with the angle scale to calibrate the bending angle of the object to be bent; the lower surface of the work platform (1) is also provided with a limiting device, which is used to limit the angle adjustment device to ensure the stability of the angle adjustment.

2. The mechanical auxiliary positioning fixture for CNC machining centers according to claim 1, characterized in that, The angle adjustment device includes a control housing (2) fixed to the lower surface of the work platform (1). The inner wall of the control housing (2) is rotatably connected to a linkage central shaft (3). The top of the linkage central shaft (3) is fixedly connected to a control disk (4). The outer circumferential surface of the control disk (4) is fixedly connected to a blocking guide plate (5). The blocking guide plate (5) extends out of the upper surface of the work platform (1) and serves as a pointer of the angle scale, while also limiting the bending part of the object to be bent. The linkage central shaft (3) is driven to rotate by a drive device, which in turn drives the blocking guide plate (5) to rotate, thereby achieving angle adjustment. When the angle pointed to by the blocking guide plate (5) reaches the required angle, the linkage central shaft (3) is limited and locked by the limiting device.

3. The mechanical auxiliary positioning fixture for CNC machining centers according to claim 2, characterized in that, The bottom of the linkage central shaft (3) is fixedly connected to a restricted turntable (8), and the limiting device limits and locks the linkage central shaft (3) by limiting and locking the restricted turntable (8).

4. The mechanical auxiliary positioning fixture for CNC machining centers according to claim 3, characterized in that, The limiting device includes: a positioning limiting member (6) rotatably connected to the outside of the control housing (2); a protective housing (9) fixedly connected to the outside of the control housing (2); a pressure-applying top column (11) is slidably connected to the inner wall of the protective housing (9); the middle part of the positioning limiting member (6) is rotatably connected to the control housing (2), one end is fixedly connected to a positioning pin (7), and the other end is in contact with the pressure-applying top column (11), and the pressure-applying top column (11) applies a certain amount of pressure to the positioning limiting member (6). Force is applied to make the positioning pin (7) insert into the groove of the restricted turntable (8) to achieve the limiting and locking of the restricted turntable (8); by pressing the other end of the positioning limiting member (6) to generate a certain squeezing force on the pressure top post (11), the pressure top post (11) slides along the inner wall of the protective shell (9), and the positioning limiting member (6) rotates with the junction with the control shell (2) as the origin, so that the positioning pin (7) moves away from the groove of the restricted turntable (8) to achieve the unlocking of the restricted turntable (8).

5. The mechanical auxiliary positioning fixture for CNC machining centers according to claim 4, characterized in that, A tough spring (10) is fixedly connected to the inner wall of the protective shell (9), and one end of the tough spring (10) is fixedly connected to the pressure-applying top column (11).

6. The mechanical auxiliary positioning fixture for CNC machining centers according to claim 3, characterized in that, The driving device includes a hand-controlled turntable (12) fixedly installed at the bottom of the restricted turntable (8). By rotating the hand-controlled turntable (12), the restricted turntable (8) is driven to rotate, which in turn drives the linkage central shaft (3) to rotate.

7. The mechanical auxiliary positioning fixture for CNC machining centers according to claim 6, characterized in that, The outer circumference of the hand-controlled turntable (12) is provided with anti-slip texture.

8. The mechanical auxiliary positioning fixture for CNC machining centers according to claim 1, characterized in that, The clamping device includes a first clamping plate and a second clamping plate disposed on the upper surface of the working platform (1), forming an area for clamping and fixing the object to be bent, and capable of withstanding the force generated when the object to be bent is bent; the first clamping plate is fixedly installed on the working platform (1), and the second clamping plate is movably installed on the working platform (1). The position of the second clamping plate is adjusted by the adjusting device to change the distance between it and the first clamping plate, thereby realizing the clamping or release of the object to be bent.

9. The mechanical auxiliary positioning fixture for CNC machining centers according to claim 8, characterized in that, The adjustment device includes a threaded support plate (15) fixedly installed on the upper surface of the work platform (1). A T-shaped screw (16) is threadedly connected to the threaded support plate (15). One end of the T-shaped screw (16) passes through the threaded support plate (15) and is fixedly connected to the second clamping plate. By rotating the T-shaped screw (16), the second clamping plate is moved closer to or away from the first clamping plate.

10. The mechanical auxiliary positioning fixture for CNC machining centers according to claim 1, characterized in that, The lower surface of the work platform (1) is fixedly connected with multiple support legs (18), and the bottom of the support legs (18) is provided with anti-slip pads.

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