Automatic straightening equipment

Abstract

The utility model discloses automatic straightening equipment which comprises a device body, a straightening mechanism is arranged in the device body, a clamping mechanism is further arranged in the device body, a first linear driving mechanism is further arranged in the device body, and the first linear driving mechanism drives the straightening mechanism to linearly move to straighten a workpiece on the clamping mechanism. A detection mechanism is also arranged in the device body; according to the automatic straightening equipment, the three-jaw chuck is adopted for positioning and clamping the workpiece, the workpiece is not prone to deflection in the straightening process, the straightening condition can be judged by measuring the distance between the workpiece and the center shaft of the three-jaw chuck through the arranged detection mechanism, and the automatic straightening equipment has high straightening precision.

Description

Technical Field

[0001] The utility model relates to the technical field of straightening equipment, and specifically discloses an automatic straightening equipment. Background Art

[0002] In the manufacturing process of orthopedic medical devices, a large number of long axis parts are used. These long axis parts are difficult to process, and after heat treatment, the parts will inevitably have different degrees of deformation, which brings certain difficulties to subsequent processing. Therefore, precise straightening can greatly reduce processing allowances and improve production efficiency and economic benefits.

[0003] For example, the patent with announcement number CN205270442U, announcement date 2016-06-01, discloses a straightening pressure rod, including a pressure block, the upper end of the pressure block is provided with a connector for connecting with a driving mechanism, and the lower end face of the pressure block is provided with an arc-shaped pressure groove, and the pressure groove is gap-matched with the workpiece to be straightened when in use. The pressure block is a rectangular block, and the pressure groove is a circular arc groove smaller than a semicircle. The length of the pressure block is 70mm-90mm. The connecting piece includes a connecting sleeve and a fixing bolt, the lower end of the connecting sleeve is welded to the pressure block, and the connecting sleeve is provided with a mounting screw hole horizontally, and the fixing bolt is inserted into the mounting screw hole. The utility model designs the end face of the pressure block into a circular arc shape, so that when it is pressed down during the straightening process, it contacts the workpiece in a circular arc shape, and the force points of the workpiece are fully dispersed to the surface of the workpiece, reducing the rebound amount of the workpiece after being stored for a period of time after the straightness correction, and the circular arc contact with the workpiece also avoids the workpiece from being crushed.

[0004] Existing straightening equipment, including the above-mentioned patent, has a poor fixing effect on parts when straightening long-axis parts, resulting in reduced straightening accuracy. Utility Model Content

[0005] The utility model aims to provide an automatic straightening device with high straightening accuracy.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An automatic straightening device includes a device body, a straightening mechanism is arranged in the device body, a clamping mechanism is also arranged in the device body, a first linear drive mechanism is also arranged in the device body, the first linear drive mechanism drives the straightening mechanism to move linearly to straighten the workpiece on the clamping mechanism, and a detection mechanism is also arranged in the device body.

[0008] The above-mentioned automatic straightening device, the clamping mechanism includes a three-jaw chuck installed in the device body, and the central axis of the three-jaw chuck is vertically arranged.

[0009] The above-mentioned automatic straightening device, the straightening mechanism includes a fixed rod and an arc block installed at one end of the fixed rod, the first linear drive mechanism is a first electric push rod installed in the device body, and the other end of the fixed rod is fixedly connected to the output end of the first electric push rod.

[0010] The above-mentioned automatic straightening equipment, the straightening mechanism includes two parallel limit rings, three groups of extrusion parts are slidably installed between the two limit rings, the three groups of extrusion parts are arranged in a circular array with the central axis of the limit ring as the center, the first linear drive mechanism is a first electric push rod installed in the device body, the output end of the first electric push rod is fixedly connected to the connecting block, and the two limit rings are fixedly connected to the connecting block.

[0011] The detection mechanism of the automatic straightening device includes a connecting rod and a displacement sensor fixed to one end of the connecting rod. A second linear drive mechanism is also provided in the device body, and the other end of the connecting rod is fixedly connected to the output end of the second linear drive mechanism.

[0012] The above-mentioned automatic straightening device, the extrusion member includes a mounting rod, which is rotatably connected to a roller, and the rotation axis of the roller is perpendicular to the central axis of the limiting ring.

[0013] In the above-mentioned automatic straightening equipment, the two ends of the mounting rod are respectively slidably connected with the corresponding limiting rings, and the two limiting rings are provided with sliding grooves along their own radial directions. The sliding grooves limit the radial sliding of the mounting rods along the limiting rings. A driving mechanism is installed on the connecting block, and the driving mechanism drives each mounting rod to move synchronously toward the middle of the limiting ring or synchronously away from the middle of the limiting ring.

[0014] In the automatic straightening device, both ends of the mounting rod are fixedly connected with square rods, and the square rods extend into corresponding slide grooves.

[0015] The above-mentioned automatic straightening equipment, the driving mechanism includes a driving ring rotatably mounted on the limiting ring, the driving ring is arranged in a one-to-one correspondence with the limiting ring, the positions of the driving ring corresponding to the square rods are provided with arc grooves, and the ends of the square rods away from the mounting rods are fixedly connected with cylindrical rods, and the cylindrical rods extend into the corresponding arc grooves.

[0016] The above-mentioned automatic straightening equipment, the driving mechanism also includes a first gear fixedly connected to the outer side of the driving ring, the position corresponding to the first gear on the connecting block is rotatably connected to the second gear, a rotating shaft is fixedly connected between the two second gears on the connecting block, and a second motor is also fixedly connected to the connecting block, and the output end of the second motor is connected to a group of second gears through a third gear.

[0017] In the above technical scheme, the automatic straightening equipment provided by the utility model adopts a three-jaw chuck to position and clamp the workpiece. The workpiece is not easy to deflect during the straightening process. The set detection mechanism can determine the straightening condition by measuring the distance between the workpiece and the center axis of the three-jaw chuck, and has high straightening accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of the internal structure of the device body provided in an embodiment of the utility model;

[0020] Figure 2 An enlarged schematic diagram of a fixing rod and an arc-shaped block provided in an embodiment of the utility model;

[0021] Figure 3 A partial cross-sectional view of a device body provided by an embodiment of the utility model;

[0022] Figure 4 The embodiment of the utility model provides Figure 3 The enlarged schematic diagram at A in the middle;

[0023] Figure 5 An enlarged schematic diagram of a limit ring and an extrusion member provided in an embodiment of the utility model;

[0024] Figure 6 A top view of a driving mechanism provided in an embodiment of the utility model.

[0025] Description of reference numerals:

[0026] 1. Device body; 11. Turntable; 12. First motor; 13. First electric push rod; 14. Connecting block; 15. Second electric push rod; 2. Straightening mechanism; 21. Fixing rod; 211. Arc block; 22. Limiting ring; 221. Slide groove; 23. Extrusion piece; 231. Mounting rod; 232. Roller; 233. Square rod; 234. Cylindrical rod; 3. Clamping mechanism; 4. Detection mechanism; 41. Connecting rod; 42. Displacement sensor; 5. Driving mechanism; 51. Driving ring; 511. Arc groove; 52. First gear; 53. Second gear; 54. Third gear; 55. Second motor. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] In the description of the present utility model, unless otherwise specified, "multiple" means two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] like Figure 1-Figure 6 As shown, an automatic straightening device provided by an embodiment of the utility model includes a device body 1, a straightening mechanism 2 is arranged in the device body 1, a clamping mechanism 3 is also arranged in the device body 1, a first linear driving mechanism 5 is also arranged in the device body 1, the first linear driving mechanism 5 drives the straightening mechanism 2 to move linearly to straighten the workpiece on the clamping mechanism 3, and a detection mechanism 4 is also arranged in the device body 1.

[0030] The clamping mechanism 3 comprises a three-jaw chuck installed in the device body 1 , the central axis of the three-jaw chuck is vertically arranged, and optionally, the three-jaw chuck is a pneumatic chuck.

[0031] A turntable 11 is rotatably installed in the device body 1, and a first motor 12 is installed in the device body 1. The output end of the first motor 12 is coaxially connected to the turntable 11. A three-jaw chuck is fixed to the turntable 11, and the three-jaw chuck is coaxially arranged with the turntable 11.

[0032] The automatic straightening device also includes a controller installed on one side of the device body 1, and a robotic arm installed inside the device. The controller is electrically connected to each electrical appliance on the straightening device to facilitate the automatic straightening of the workpiece. A first tray for placing unstraightened workpieces and a second tray for placing straightened workpieces are fixedly connected to the device body 1. The first tray and the second tray are respectively installed on the left and right sides of the device body 1. The robotic arm is used to clamp the workpiece from the first tray and place it on the three-jaw chuck, or to clamp the workpiece on the three-jaw chuck after straightening and place it on the second tray.

[0033] The automatic straightening equipment provided by the embodiment of the utility model adopts a three-jaw chuck to position and clamp the workpiece. The workpiece is not easy to deflect during the straightening process. The detection mechanism 4 set up can determine the straightening condition by measuring the distance between the workpiece and the central axis of the three-jaw chuck, and has high straightening accuracy.

[0034] In another embodiment of the utility model, the straightening mechanism 2 includes a fixed rod 21 and an arc block 211 installed at one end of the fixed rod 21, and the first linear drive mechanism 5 is a first electric push rod 13 installed in the device body 1, and the other end of the fixed rod 21 is fixedly connected to the output end of the first electric push rod 13.

[0035] In this embodiment, the workpiece can be straightened by driving the fixed rod 21 to move along the central axis of the three-jaw chuck through the first electric push rod 13. It should be noted that when using this method, the inner diameter of the arc block 211 can be equal to the diameter of the workpiece, so as to improve the straightening accuracy of the workpiece.

[0036] In another embodiment of the present invention, which is different from the above-mentioned embodiment, the straightening mechanism 2 includes two parallel limit rings 22, and three groups of extrusion members 23 are slidably installed between the two limit rings 22. The three groups of extrusion members 23 are arranged in a circular array with the central axis of the limit ring 22 as the center. The first linear drive mechanism 5 is a first electric push rod 13 installed in the device body 1, and the output end of the first electric push rod 13 is fixedly connected to the connecting block 14. The two limit rings 22 are fixedly connected to the connecting block 14.

[0037] Preferably, two groups of straightening mechanisms 2 are provided, and the two groups of straightening mechanisms 2 are symmetrically arranged up and down, such as Figure 3 and Figure 4 As shown, the rollers 232 of the two straightening mechanisms 2 are staggered so that more angles on the circumferential surface of the part can contact the rollers 232, thereby improving the straightening efficiency of the part.

[0038] The detection mechanism 4 includes a connecting rod 41 and a displacement sensor 42 fixedly connected to one end of the connecting rod 41. A second linear drive mechanism 5 is also provided in the device body 1. The other end of the connecting rod 41 is fixedly connected to the output end of the second linear drive mechanism 5. The second linear drive mechanism 5 is a second electric push rod 15. The second electric push rod 15 is installed parallel to the central axis of the three-jaw chuck, that is, the second electric push rod 15 is vertically installed in the body of the device. One end of the connecting rod 41 away from the displacement sensor 42 is fixedly connected to the upper end of the second electric push rod 15.

[0039] Furthermore, the extrusion member 23 includes a mounting rod 231 , on which a roller 232 is rotatably connected, and a rotation axis of the roller 232 is perpendicular to a central axis of the limiting ring 22 .

[0040] Specifically, in this embodiment, when the automatic straightening device is in use, the robotic arm clamps the workpiece through the middle part of the straightening mechanism 2, that is, between the three groups of rollers 232, and is inserted into the three-jaw chuck. The three-jaw chuck is driven to clamp the end of the workpiece. Then, the second electric push rod 15 drives the straightening mechanism 2 to move along the central axis direction of the three-jaw chuck to realize the straightening of the workpiece. The setting of the roller 232 can effectively reduce the movement resistance of the straightening mechanism 2.

[0041] Furthermore, both ends of the mounting rod 231 are respectively slidably connected with the corresponding limiting rings 22, and a slide groove 221 is opened on the two limiting rings 22 along their own radial direction. The slide groove 221 limits the radial sliding of the mounting rod 231 along the limiting ring 22, and a driving mechanism 5 is installed on the connecting block 14. The driving mechanism 5 drives each mounting rod 231 to move synchronously toward the middle of the limiting ring 22 or synchronously away from the middle of the limiting ring 22.

[0042] Furthermore, both ends of the mounting rod 231 are fixedly connected with square rods 233 , and the square rods 233 extend into the corresponding sliding grooves 221 .

[0043] Optionally, the driving mechanism 5 includes a driving ring 51 rotatably mounted on the limiting ring 22. The driving ring 51 is arranged one-to-one with the limiting ring 22. Arc grooves 511 are opened at positions corresponding to the square rods 233 on the driving ring 51. One end of each square rod 233 away from the mounting rod 231 is fixedly connected to a cylindrical rod 234, and the cylindrical rod 234 extends into the corresponding arc groove 511.

[0044] The driving mechanism 5 also includes a first gear 52 fixedly connected to the outer side of the driving ring 51, and the positions corresponding to the first gear 52 on the connecting block 14 are rotatably connected to the second gears 53, and a rotating shaft is fixedly connected between the two second gears 53 on the connecting block 14. The connecting block 14 is also fixedly connected to a second motor 55, and the output end of the second motor 55 is transmission-connected to a group of second gears 53 through a third gear 54.

[0045] Specifically, when the second motor 55 is started, it drives the third gear 54 to rotate, and the third gear 54 drives the second gear 53 to rotate. The two groups of second gears 53 keep rotating synchronously through the rotating shaft, so that the two driving rings 51 on the same straightening mechanism 2 are driven to rotate at the same time. When the driving ring 51 rotates, the cylindrical rod 234 is pushed to move along the slide groove 221 through the arc groove 511, and the mounting rod 231 is driven to move toward the middle of the limit ring 22, so that the three groups of rollers 232 can hold the workpiece from three directions and straighten it. This arrangement is to reserve space for the workpiece to pass through the straightening mechanism 2 and be fixed by a three-jaw chuck. At the same time, since the mounting rod 231 can be adjusted in position along the radial direction of the limit ring 22, the automatic straightening equipment can be suitable for straightening workpieces of different diameters.

[0046] Preferably, two sets of parallel guide rods are fixedly connected in the device body 1, and the connecting blocks 14 of the two straightening mechanisms 2 are both mounted on the two sets of guide rods. Figure 3 and Figure 4 As shown, the central axes of the two guide rods are arranged parallel to the central axis of the three-jaw chuck, that is, Figure 3 and Figure 4 In the figure, the guide rod is arranged vertically, and the second electric push rod 15 corresponding to the two straightening mechanisms 2 is provided to guide the two straightening mechanisms 2, so as to reduce the force on the first electric push rod 13.

[0047] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatic straightening device, comprising a device body, a straightening mechanism is arranged in the device body, and the characteristics are: A clamping mechanism is also provided in the device body, a first linear drive mechanism is also provided in the device body, the first linear drive mechanism drives the straightening mechanism to move linearly to straighten the workpiece on the clamping mechanism, and a detection mechanism is also provided in the device body.

2. The automatic straightening device according to claim 1, characterized in that: The clamping mechanism comprises a three-jaw chuck installed in the device body, and the central axis of the three-jaw chuck is vertically arranged.

3. The automatic straightening device according to claim 2, characterized in that: The straightening mechanism includes a fixed rod and an arc block installed at one end of the fixed rod. The first linear drive mechanism is a first electric push rod installed in the device body. The other end of the fixed rod is fixedly connected to the output end of the first electric push rod.

4. The automatic straightening device according to claim 3, characterized in that: The straightening mechanism includes two parallel limit rings, three groups of extrusion parts are slidably installed between the two limit rings, and the three groups of extrusion parts are arranged in a circular array with the central axis of the limit ring as the center. The first linear drive mechanism is a first electric push rod installed in the device body, and the output end of the first electric push rod is fixedly connected to a connecting block, and the two limit rings are fixedly connected to the connecting block.

5. The automatic straightening device according to claim 3 or 4, characterized in that: The detection mechanism includes a connecting rod and a displacement sensor fixed to one end of the connecting rod. A second linear drive mechanism is also arranged in the device body. The other end of the connecting rod is fixedly connected to the output end of the second linear drive mechanism.

6. The automatic straightening device according to claim 4, characterized in that: The extrusion piece comprises a mounting rod, on which a roller is rotatably connected, and a rotation axis of the roller is perpendicular to the center axis of the limiting ring.

7. The automatic straightening device according to claim 6, characterized in that: The two ends of the mounting rod are respectively slidably connected with the corresponding limiting rings. The two limiting rings are provided with sliding grooves along their own radial directions. The sliding grooves limit the radial sliding of the mounting rods along the limiting rings. A driving mechanism is installed on the connecting block. The driving mechanism drives each mounting rod to move synchronously toward the middle of the limiting ring or synchronously away from the middle of the limiting ring.

8. The automatic straightening device according to claim 7, characterized in that: Both ends of the installation rod are fixedly connected with square rods, and the square rods extend into corresponding sliding grooves.

9. The automatic straightening device according to claim 8, characterized in that: The driving mechanism includes a driving ring rotatably mounted on the limiting ring. The driving ring is arranged in a one-to-one correspondence with the limiting ring. The positions of the driving ring corresponding to the square rods are provided with arc grooves. The ends of the square rods away from the mounting rods are fixedly connected with cylindrical rods, and the cylindrical rods extend into the corresponding arc grooves.

10. The automatic straightening device according to claim 9, characterized in that: The driving mechanism also includes a first gear fixedly connected to the outside of the driving ring, and the positions on the connecting block corresponding to the first gear are rotatably connected to the second gears, a rotating shaft is fixedly connected between the two second gears on the connecting block, and a second motor is also fixedly connected to the connecting block, and the output end of the second motor is connected to a group of second gears through a third gear.

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