Positioning correction device
By designing a positioning and correction device, and utilizing sliding fit and guide limit, the jamming problem of traditional positioning and correction fixtures when workpieces are deflected at large angles is solved, achieving stable and efficient workpiece correction, and improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 采埃孚汽车科技(张家港)有限公司
- Filing Date
- 2026-06-05
- Publication Date
- 2026-07-10
AI Technical Summary
Traditional positioning and correction fixtures are prone to jamming when faced with workpieces that deflect at large angles, leading to correction failure or damage to the workpiece, and are unable to achieve stable and efficient positioning and correction.
A positioning and correction device is adopted, including a positioning mechanism, a driving mechanism and a correction slider. Through the sliding cooperation and guiding limit of the correction slider, the workpiece is stably corrected and jamming is avoided.
It enables smooth and stable correction of workpieces with large-angle deflection, improves production efficiency and product yield, and meets the requirements of high-precision positioning.
Smart Images
Figure CN122353286A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automated assembly technology, and more specifically, to a positioning and correction device. Background Technology
[0002] In automated assembly processes, it is often necessary to place workpieces with specific angular requirements (such as pressure sensors) on positioning and calibration fixtures for positioning and calibration to ensure correct assembly later. Such workpieces typically have a feature surface (such as a cut plane) for positioning, which is connected to the non-featured parts of the workpiece through an angle.
[0003] Traditional positioning and alignment fixtures often use a flat pusher block to contact the feature surface of the workpiece for alignment. When the workpiece's incoming angle deflection is large, the end of the flat pusher block can easily get stuck at the corner between the feature surface and non-feature parts of the workpiece, leading to alignment failure, equipment alarm and shutdown, or even damage to the workpiece.
[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention
[0005] This application provides a positioning and correction device that can avoid jamming and stably correct workpieces with large-angle deflection.
[0006] According to one aspect of this application, a positioning and correction device is provided, comprising: a positioning mechanism having a bearing surface and a correction reference surface, the bearing surface being for placing a workpiece to be corrected, and the correction reference surface being adapted to a feature surface of the workpiece to be corrected; a driving mechanism having an output end capable of moving along a first direction; and a pair of correction sliders, each correction slider having a correction surface facing the positioning mechanism, the correction surface partially engaging with the correction reference surface in a direction perpendicular to the bearing surface, and partially extending beyond the correction reference surface to engage with the feature surface; wherein the output end of the driving mechanism is capable of driving the pair of correction sliders to move toward the positioning mechanism along the first direction and away from each other along a second direction, and the correction surfaces of the pair of correction sliders are capable of sliding engagement with the correction reference surface.
[0007] When the positioning and correction device is working, driven by the drive mechanism, a pair of correction sliders move along a first direction to contact the feature surface of the workpiece with angular deflection, and move away from each other along a second direction to apply a lateral thrust to the feature surface of the workpiece, causing the workpiece to rotate to the correct angle. During the correction process, the sliding cooperation between the correction surface and the correction reference surface provides guidance and limitation, stabilizing the trajectory of the correction sliders and preventing swaying or jamming. The positioning and correction device of this application can achieve smooth and stable correction of workpieces with angular deflection, meet the positioning and correction requirements of workpieces with specific angle requirements, and avoid correction failure due to jamming, thereby improving production efficiency and product yield.
[0008] In some embodiments, the positioning correction device further includes: a slider bracket slidably disposed along the first direction; wherein the pair of correction sliders are slidably supported on the slider bracket along the second direction.
[0009] The slider bracket provides a mounting base for a pair of correction sliders, drives the pair of correction sliders to move in the first direction, and restricts the degree of freedom of the correction sliders so that the correction sliders can only move in the second direction relative to the slider bracket. This makes the opening and closing action of the pair of correction sliders precise and synchronous, so as to achieve accurate correction of the workpiece.
[0010] In some embodiments, the positioning mechanism is further provided with a stop surface, and the slider bracket is provided with a stop portion facing the positioning mechanism; wherein, when the stop portion abuts against the stop surface, the correction surfaces of the pair of correction sliders are in clearance fit with the correction reference surface.
[0011] Driven by the drive mechanism, when the slider support advances to the stop and abuts the stop surface, the slider support stops moving, while the pair of correction sliders can continue to move in the second direction, thus making the correction process step by step and orderly. When the stop abuts the stop surface, the clearance fit between the correction surface and the correction reference surface prevents the pair of correction sliders from rubbing and getting stuck with the correction reference surface during the opening process, making the movement of the correction sliders smooth and stable, and ensuring stable correction of the workpiece.
[0012] In some embodiments, as the driving mechanism moves toward the positioning mechanism along the first direction: firstly, the pair of correction sliders and the slider support move along the first direction until the stop portion abuts against the stop surface. At this time, the pair of correction sliders have not yet opened, and the correction surface has extended to the area where the feature surface of the workpiece is located, preventing the pair of correction sliders from opening too early and losing their correction effect on the workpiece; then, the pair of correction sliders move away from each other along the second direction and slide relative to the correction reference surface. At this time, if the workpiece has an angular deflection (i.e., the feature surface of the workpiece is not parallel to the correction reference surface), the correction surfaces of the pair of correction sliders can simultaneously apply opposite thrusts to the feature surface of the workpiece, causing the workpiece to rotate until the feature surface of the workpiece is parallel to the correction reference surface, thus achieving correction.
[0013] In some embodiments, the positioning correction device further includes: a correction push plate, connected to the output end of the drive mechanism and extending between the pair of correction sliders; wherein the slider support is floatingly supported on the correction push plate along the first direction, and the correction push plate can drive the slider support and the pair of correction sliders to move along the first direction, and can drive the pair of correction sliders to move along the second direction.
[0014] The slider support is floatingly supported on the correction push plate, so that the correction push plate can drive the slider support (and a pair of correction sliders) forward in the first direction until the slider support is limited; then, the correction push plate extending between the pair of correction sliders can continue to drive the pair of correction sliders away from each other in the second direction, so that the pair of correction sliders open to both sides.
[0015] In some embodiments, the correction push plate is provided with a pair of guide arc surfaces, and each correction slider is provided with a follower arc surface that slides in cooperation with the guide arc surfaces; after the slider bracket is limited, it moves along the first direction with the correction push plate, and the guide arc surface slides relative to the follower arc surface, driving the pair of correction sliders to move along the second direction.
[0016] By utilizing the cooperation of the guide arc surface and the follower arc surface, the linear forward motion of the correction push plate (along the first direction) is converted into the lateral opening motion of the correction slider (along the second direction). The conversion efficiency is high and there is no rigid impact, which makes the movement of the correction slider smooth, thereby achieving stable correction of the workpiece.
[0017] In some embodiments, the correction push plate has a correction push surface facing the positioning mechanism, the correction push surface being adapted to a feature surface of the workpiece to be corrected, the correction push surface partially engaging with the correction reference surface in a direction perpendicular to the bearing surface, and partially extending beyond the correction reference surface for engaging with a feature surface of the workpiece to be corrected; after the pair of correction sliders move away from each other along the second direction, the driving mechanism can also drive the correction push plate to move along the first direction until the correction push surface abuts against the correction reference surface.
[0018] After the initial correction of the workpiece is completed using a pair of correction sliders, the correction push plate can continue to move forward until the correction push surface abuts against the feature surface of the workpiece, pushing the feature surface of the workpiece to be parallel and aligned with the correction reference surface, so that the feature surface of the workpiece and the correction reference surface are coplanar, realizing secondary correction and precise positioning, solving the problem of residual angle deflection that may exist when correcting with correction sliders alone, and meeting the requirements of high-precision positioning correction.
[0019] In some embodiments, the feature surface of the workpiece to be corrected, the correction reference surface, and the correction push surface are all planes; the correction curved surface is a circular arc surface.
[0020] During the secondary correction process, the correction push surface simultaneously abuts against the correction reference surface and the feature surface of the workpiece, and the three planes are coplanar, so that the angle of the workpiece is uniquely determined.
[0021] In some embodiments, the slider support is provided with a groove extending along the second direction, the pair of correction sliders are accommodated in the groove and are provided with a sliding guide portion that slides with the groove; the correction push plate extends through the groove and between the pair of correction sliders.
[0022] By utilizing the cooperation between the sliding guide and the slide groove, the correction slider is ensured to move only in the second direction relative to the slider support. Through the cooperative design between the slider support, the correction slider, and the correction push plate, the entire positioning and correction device has a compact structure, small size, short force transmission path, and high rigidity.
[0023] In some embodiments, the positioning correction device further includes a first elastic reset mechanism, the first elastic reset mechanism including a first guide pin extending along the first direction and a first reset spring; one end of the first guide pin is fixed to the slider bracket, and the other end slidably passes through the correction push plate; the first reset spring is sleeved on the first guide pin and acts between the slider bracket and the correction push plate.
[0024] When the drive mechanism retracts, the first reset spring pushes the slider bracket away from the correction push plate, causing the slider bracket to reset along the first direction, thereby driving a pair of correction sliders to achieve the reset in the first direction.
[0025] In some embodiments, the positioning correction device further includes a second elastic reset mechanism, the second elastic reset mechanism including a second guide pin extending along the second direction and a second reset spring; one end of the second guide pin is fixed to the correction slider, and the other end slidably passes through the slider bracket; the second reset spring is sleeved on the second guide pin and acts between the slider bracket and the correction slider.
[0026] When the drive mechanism retracts, the correction push plate no longer expands the correction slider, and the second reset spring drives the two correction sliders to move closer to each other along the second direction, thereby resetting the pair of correction sliders along the second direction.
[0027] In some embodiments, the positioning and correction device further includes at least one positioning bearing disposed on the bearing surface for rolling engagement with the outer edge of the workpiece to be corrected.
[0028] By using a positioning bearing to roll with the outer edge of the workpiece, the rotational resistance of the workpiece can be reduced, allowing the workpiece to rotate smoothly. Even if the workpiece is heavy or has a large deflection angle, it can be easily and accurately corrected.
[0029] In some embodiments, the at least one positioning bearing includes a plurality of positioning bearings that form a contour region adapted to the outer edge of the workpiece to be corrected.
[0030] By using multiple positioning bearings working together, the workpiece is supported and guided from multiple directions, ensuring that the workpiece remains in the center position during the correction rotation process and does not become eccentric or wobble.
[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description
[0032] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.
[0033] Figure 1 A schematic diagram of the mating structure between the positioning and correction device and the workpiece provided in the embodiments of this application; Figure 2 This is a partial structural schematic diagram of the positioning correction device provided in the embodiments of this application; Figure 3 This is a schematic diagram of the positioning mechanism of the positioning correction device provided in the embodiments of this application; Figure 4 This is a schematic diagram of the structure of the calibration slider of the positioning calibration device provided in the embodiments of this application; Figure 5 This is a schematic diagram of the slider bracket of the positioning and correction device provided in the embodiments of this application; Figure 6 This is a schematic diagram of the structure of the correction push plate of the positioning correction device provided in the embodiments of this application; Figure 7 A schematic diagram of the engagement structure between the positioning and correction device provided in the embodiments of this application and the workpiece in the initial stage; Figure 8 A schematic diagram of the cooperation structure between the positioning and correction device and the workpiece during the forward movement stage, as provided in the embodiments of this application; Figure 9 A schematic diagram of the cooperation structure between the positioning and correction device provided in the embodiment of this application and the workpiece in the first correction stage; Figure 10 This is a schematic diagram of the cooperation structure between the positioning and correction device provided in the embodiment of this application and the workpiece during the secondary correction stage. Detailed Implementation
[0034] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to those described herein. Rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.
[0035] The accompanying drawings are merely illustrative of this application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore, repeated descriptions of them will be omitted.
[0036] The use of terms such as "first," "second," and similar words in the specific description does not indicate any order, quantity, or importance, but is merely used to distinguish different components. Terms such as "front," "rear," "vertical," and "horizontal," indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, in the description of this application, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly, 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 a direct connection or an indirect connection through an intermediate medium, or it can be a connection within two components.
[0037] It should be noted that, unless otherwise specified, the embodiments of this application and the features in different embodiments can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0038] Figure 1 The diagram illustrates the mating structure between the positioning and correction device and the workpiece. Figure 2 The partial structure of the positioning and correction device is shown (the slider support is hidden). Figure 3 The diagram illustrates the structure of the positioning mechanism of the positioning correction device. Figure 4 The diagram illustrates the structure of the calibration slider in the positioning and calibration device. (Combined with...) Figures 1 to 4 As shown, the positioning and correction device provided in this application embodiment may include: a positioning mechanism 100, having a bearing surface 110 and a correction reference surface 120, the bearing surface 110 being used for placing the workpiece 800 to be corrected, and the correction reference surface 120 being used to adapt to the feature surface 820 of the workpiece 800 to be corrected; a driving mechanism 200, having an output end 210 capable of moving along a first direction X; and a pair of correction sliders 320, each correction slider 320 having a correction surface 321 facing the positioning mechanism 100, the correction surface 321 partially engaging with the correction reference surface 120 in a direction perpendicular to the bearing surface 110, and partially extending beyond the correction reference surface 120 for engaging with the feature surface 820; wherein, the output end 210 of the driving mechanism 200 can drive the pair of correction sliders 320 to move toward the positioning mechanism 100 along the first direction X and away from each other along the second direction Y, and the correction surfaces 321 of the pair of correction sliders 320 can slide in engagement with the correction reference surface 120.
[0039] The correction reference surface 120 of the positioning mechanism 100 is adapted to the feature surface 820 of the workpiece 800, serving as a reference surface for correction. The correction surface 321 of the correction slider 320 partially extends beyond the correction reference surface 120 in a direction perpendicular to the bearing surface 110, allowing the correction surface 321 to contact the feature surface 820 of the workpiece 800, which is placed on the bearing surface 110 and has an angular deflection, when the correction slider 320 approaches the correction reference surface 120, thereby correcting the workpiece 800. Compared to a planar push block, the correction surface 321 can smoothly transition to the feature surface 820 of the workpiece 800. Even if the workpiece 800 has a large deflection angle, the correction surface 321 can slide into the feature surface 820 along the corner between the feature surface 820 and the non-featured parts of the workpiece 800, avoiding jamming. The correction surface 321 can be a circular arc surface, an elliptical arc surface, a parabolic arc surface, or other smooth curved surfaces. By using a pair of correction surfaces 321, the workpiece 800 can be corrected from both sides at the same time, avoiding the risk of jamming caused by pushing from one side.
[0040] When the positioning and correction device is working, driven by the drive mechanism 200, a pair of correction sliders 320 can move along the first direction X to contact the feature surface 820 of the workpiece 800 which has an angular deflection, and move away from each other along the second direction Y to apply a pushing force to both sides to the feature surface 820 of the workpiece 800, causing the workpiece 800 to rotate to the correct angle. The first direction X and the second direction Y are perpendicular to each other. In the ideal positioning and correction state, the feature surface 820 of the workpiece 800 is parallel and aligned with the correction reference surface 120, forming an almost coplanar state. During the correction process, the sliding fit between the correction surface 321 and the correction reference surface 120 provides guidance and limitation, stabilizing the trajectory of the correction sliders 320 and preventing swaying or jamming. The sliding fit between the correction surface 321 and the correction reference surface 120 can be a clearance sliding fit, a transition sliding fit, or a contact sliding fit coated with a lubricating medium, all of which can achieve stable guidance.
[0041] The positioning and correction device of this application can achieve smooth and stable correction of workpiece 800 with arbitrary angle deflection, meet the positioning and correction requirements of workpiece 800 with specific angle requirements, and avoid correction failure due to jamming, thereby improving production efficiency and product yield.
[0042] Figure 5 The diagram illustrates the structure of the slider support of the positioning and correction device, combined with... Figures 1 to 5 As shown, in some embodiments, the positioning correction device further includes: a slider support 310, which is slidably disposed along a first direction X; wherein a pair of correction sliders 320 are slidably supported on the slider support 310 along a second direction Y.
[0043] The slider bracket 310 provides a mounting base for a pair of correction sliders 320, drives the pair of correction sliders 320 to move along the first direction X, and restricts the degree of freedom of the correction sliders 320, so that the correction sliders 320 can only move along the second direction Y relative to the slider bracket 310, so that the opening and closing action of the pair of correction sliders 320 is precise and synchronous, so as to achieve accurate correction of the workpiece 800.
[0044] In some embodiments, the positioning mechanism 100 is further provided with a stop surface 130, and the slider bracket 310 is provided with a stop portion 311 facing the positioning mechanism 100; wherein, when the stop portion 311 abuts against the stop surface 130, the correction surface 321 of a pair of correction sliders 320 is in clearance fit with the correction reference surface 120.
[0045] The stop surface 130 of the positioning mechanism 100 cooperates with the stop portion 311 of the slider bracket 310 to limit the extreme position of the slider bracket 310's movement along the first direction X (moving closer to the positioning mechanism 100). Driven by the drive mechanism 200, when the slider bracket 310 moves forward to the point where the stop portion 311 abuts against the stop surface 130, the slider bracket 310 stops moving, while the pair of correction sliders 320 can continue to move along the second direction Y, thus making the correction process step by step and orderly. When the stop portion 311 abuts against the stop surface 130, the correction curved surface 321 and the correction reference surface 120 are clearance-fitted to prevent the pair of correction sliders 320 from rubbing and getting stuck against the correction reference surface 120 during the opening process, making the movement of the correction sliders 320 smooth and stable, and ensuring stable correction of the workpiece 800. A buffer pad can be provided between the stop portion 311 and the stop surface 130 to absorb impact.
[0046] In some embodiments, as the drive mechanism 200 moves toward the positioning mechanism 100 along the first direction X: firstly, a pair of correction sliders 320 and slider brackets 310 move along the first direction X until the stop portion 311 abuts against the stop surface 130. At this time, the pair of correction sliders 320 have not yet opened, and the correction surface 321 has extended to the area where the feature surface 820 of the workpiece 800 is located, preventing the pair of correction sliders 320 from opening too early and losing their correction effect on the workpiece 800; then, the pair of correction sliders 320 move away from each other along the second direction Y and slide relative to the correction reference surface 120. At this time, if the workpiece 800 has an angular deflection (i.e., the feature surface 820 of the workpiece 800 is not parallel to the correction reference surface 120), the correction surfaces 321 of the pair of correction sliders 320 can simultaneously apply opposite thrusts to the feature surface 820 of the workpiece 800, causing the workpiece 800 to rotate until the feature surface 820 of the workpiece 800 is parallel to the correction reference surface 120, thus achieving correction.
[0047] Figure 6 The diagram illustrates the structure of the correction push plate of the positioning and correction device, combined with... Figures 1 to 6 As shown, in some embodiments, the positioning correction device further includes: a correction push plate 400, which is connected to the output end 210 of the drive mechanism 200 and extends between a pair of correction sliders 320; wherein, the slider support 310 is floatingly supported on the correction push plate 400 along the first direction X, and the correction push plate 400 can drive the slider support 310 and the pair of correction sliders 320 to move along the first direction X, and can drive the pair of correction sliders 320 to move along the second direction Y.
[0048] The slider support 310 is floatingly supported on the correction push plate 400, allowing the correction push plate 400 to drive the slider support 310 (and a pair of correction sliders 320) forward along the first direction X until the slider support 310 is stopped. Then, the correction push plate 400, extending between the pair of correction sliders 320, can continue to drive the pair of correction sliders 320 away from each other along the second direction Y, causing the pair of correction sliders 320 to open to both sides. The correction push plate 400 and the pair of correction sliders 320 can be coupled via inclined or curved surfaces to achieve the effect of the correction push plate 400 advancing along the first direction X while the pair of correction sliders 320 open along the second direction Y, simplifying the drive and reducing costs.
[0049] In some embodiments, the correction push plate 400 is provided with a pair of guide arc surfaces 410, and each correction slider 320 is provided with a follower arc surface 322 that slides with the guide arc surface 410; after the slider bracket 310 is limited, it moves with the correction push plate 400 along the first direction X, and the guide arc surface 410 and the follower arc surface 322 slide relative to each other, driving the pair of correction sliders 320 to move along the second direction Y.
[0050] By utilizing the cooperation between the guide arc surface 410 and the follower arc surface 322, the linear forward motion of the correction push plate 400 (along the first direction X) is converted into the lateral opening motion of the correction slider 320 (along the second direction Y). The conversion efficiency is high and there is no rigid impact, so that the correction slider 320 moves smoothly, thereby achieving stable correction of the workpiece 800.
[0051] The guide arc surface 410 can be designed as an eccentric arc to achieve a variable transmission ratio. For example, driven by the correction push plate 400, the initial opening speed of a pair of correction sliders 320 is relatively fast to quickly correct the large-angle deflection of the workpiece 800; the opening speed is slowed down in the later stage to improve the correction accuracy.
[0052] In some embodiments, the correction push plate 400 has a correction push surface 420 facing the positioning mechanism 100, the correction push surface 420 is adapted to the feature surface 820 of the workpiece 800 to be corrected, the correction push surface 420 partially engages with the correction reference surface 120 in a direction perpendicular to the bearing surface 110, and partially extends beyond the correction reference surface 120 to engage with the feature surface 820 of the workpiece 800 to be corrected; after a pair of correction sliders 320 move away from each other in the second direction Y, the drive mechanism 200 can also drive the correction push plate 400 to move in the first direction X until the correction push surface 420 abuts against the correction reference surface 120.
[0053] The correction push surface 420 extends partially beyond the correction reference surface 120 in a direction perpendicular to the bearing surface 110, allowing it to contact the feature surface 820 of the workpiece 800 when it approaches the correction reference surface 120. After the initial correction of the workpiece 800 is completed using a pair of correction sliders 320, the correction push plate 400 can continue to advance until the correction push surface 420 abuts against the feature surface 820 of the workpiece 800, pushing the feature surface 820 of the workpiece 800 until it is parallel and aligned with the correction reference surface 120, making the feature surface 820 of the workpiece 800 coplanar with the correction reference surface 120. This achieves secondary correction and precise positioning, solving the problem of residual angular deflection that may exist when relying solely on the correction sliders 320 for correction, and meeting the requirements for high-precision positioning correction.
[0054] In some embodiments, the feature surface 820, the correction reference surface 120, and the correction push surface 420 of the workpiece 800 to be corrected are all planes; the correction curved surface 321 is a circular arc surface.
[0055] During the secondary calibration process, the calibration push surface 420 simultaneously abuts against the calibration reference surface 120 and the feature surface 820 of the workpiece 800, ensuring that the angle of the workpiece 800 is uniquely determined by the three planes being coplanar. The calibration curved surface 321 is formed as an arc surface, which can smoothly slide into the feature surface 820 of the workpiece 800 without jamming even if the workpiece 800 has a large angular deflection; moreover, the arc surface exerts uniform and controllable pressure on the feature surface 820 when aligning the workpiece 800, avoiding scratches on the surface of precision workpieces due to point contact or local stress concentration, which is especially suitable for electronic components such as sensors that have high surface quality requirements. In other embodiments, if the feature surface 820 of the workpiece 800 is not a plane but a cylindrical or conical surface, the corresponding positioning surface and calibration push surface 420 are also adapted to the same shape.
[0056] In some embodiments, the slider support 310 is provided with a groove 312 extending along the second direction Y, a pair of correction sliders 320 are accommodated in the groove 312 and are provided with a sliding guide portion 323 that slides with the groove 312; the correction push plate 400 extends through the groove 312 and between the pair of correction sliders 320.
[0057] By utilizing the cooperation between the sliding guide 323 and the slide groove 312, it is ensured that the correction slider 320 moves only along the second direction Y relative to the slider support 310. Through the cooperative design between the slider support 310, the correction slider 320 and the correction push plate 400, the entire positioning and correction device has a compact structure, small size, short force transmission path and high rigidity.
[0058] In some embodiments, the positioning correction device further includes a first elastic reset mechanism, which includes a first guide pin 510 extending along a first direction X and a first reset spring 520; one end of the first guide pin 510 is fixed to the slider bracket 310, and the other end slidably passes through the correction push plate 400; the first reset spring 520 is sleeved on the first guide pin 510 and acts between the slider bracket 310 and the correction push plate 400.
[0059] When the drive mechanism 200 retracts, the first return spring 520 pushes the slider bracket 310 away from the correction push plate 400, causing the slider bracket 310 to reset along the first direction X, thereby driving a pair of correction sliders 320 to reset in the first direction X. The first guide pin 510 ensures the accurate reset direction of the slider bracket 310 and prevents deviation. The compression and release process of the first return spring 520 is gentle, avoiding rigid impact. Multiple first guide pins 510 can be used to increase stability.
[0060] In some embodiments, the positioning correction device further includes a second elastic reset mechanism, which includes a second guide pin 550 extending along the second direction Y and a second reset spring 560; one end of the second guide pin 550 is fixed to the correction slider 320, and the other end slidably passes through the slider bracket 310; the second reset spring 560 is sleeved on the second guide pin 550 and acts between the slider bracket 310 and the correction slider 320.
[0061] When the drive mechanism 200 retracts, the correction push plate 400 no longer expands the correction slider 320. The second return spring 560 drives the two correction sliders 320 to move closer to each other along the second direction Y, thus resetting the pair of correction sliders 320 along the second direction Y. The second guide pin 550 ensures the accuracy of the reset direction of the correction sliders 320 and prevents skewing. The compression and release process of the second return spring 560 is gentle, avoiding rigid impact.
[0062] In some embodiments, the positioning and correction device further includes at least one positioning bearing 160 disposed on the bearing surface 110 for rolling engagement with the outer edge of the workpiece 800 to be corrected.
[0063] After the workpiece 800 is placed on the bearing surface 110, its outer edge contacts the positioning bearing 160. When calibrating the workpiece 800, it needs to rotate around its center. Through the rolling contact between the positioning bearing 160 and the outer edge of the workpiece 800, the rotational resistance of the workpiece 800 is reduced, allowing it to rotate smoothly. Even if the workpiece 800 is heavy or has a large deflection angle, it can be easily and accurately calibrated. Simultaneously, the positioning bearing 160 also provides auxiliary support and centering for the workpiece 800, preventing it from tipping over during calibration. Mounting holes 140 for inserting the workpiece 800 can also be provided on the bearing surface 110 to ensure the workpiece 800 remains stable during calibration.
[0064] In some embodiments, the positioning bearing 160 includes a plurality of bearings, which form a contour region adapted to the outer edge of the workpiece 800 to be corrected.
[0065] Multiple positioning bearings 160 work together to support and guide the workpiece 800 from multiple directions, ensuring that the workpiece 800 maintains its central position during the correction rotation process and does not become eccentric or wobble. The positioning bearings 160 can be mounted on an adjustable bracket to accommodate workpieces 800 with different outer edge dimensions.
[0066] In some embodiments, the drive mechanism 200 is a slide cylinder or a servo motor. Slide cylinders offer smooth operation and easy installation, while servo motors provide precise control over stroke and speed. In practical applications, a suitable drive mechanism 200 can be selected based on cost, accuracy, and response speed requirements. In other embodiments, hydraulic cylinders, linear motors, or similar devices can also be used as the drive mechanism 200.
[0067] The following detailed description of a specific implementation of the positioning correction device of this application, in conjunction with the above embodiments, will describe in detail one particular implementation method.
[0068] Combination Figures 1 to 6 As shown, the positioning and correction device includes a mounting base 600, a drive mechanism 200, and a positioning mechanism 100 fixed on the mounting base 600.
[0069] The positioning mechanism 100 has a horizontal bearing surface 110 for placing the workpiece 800 (such as a pressure sensor) to be calibrated. Multiple positioning bearings 160 are mounted on the bearing surface 110, forming a circular contour area to match the outer edge of the workpiece 800. A calibration reference surface 120, a vertical plane, is provided on one side of the positioning mechanism 100 to mate with the feature surface 820 (cut plane) of the workpiece 800. The positioning mechanism 100 also has a stop surface 130 for engaging with the stop portion 311 of the slider bracket 310. The positioning mechanism 100 can be mounted on the mounting base 600 via multiple guide posts 610 to ensure the horizontality and height of the positioning mechanism 100.
[0070] The output end 210 of the drive mechanism 200 can reciprocate along the first direction X.
[0071] The correction push plate 400 is fixed to the output end 210 of the drive mechanism 200 by screws. The correction push plate 400 is provided with a waist hole 440, which can be used to finely adjust the installation position of the correction push plate 400. The correction push plate 400 has a pair of symmetrical guide arc surfaces 410 for sliding engagement with the follower arc surface 322 of the correction slider 320. The end of the correction push plate 400 (the end facing the positioning mechanism 100) is provided with a vertical correction push surface 420 (plane), which is used to abut against the feature surface 820 of the workpiece 800 during secondary correction. The correction push plate 400 is provided with through holes 430 on both sides for the first guide pin 510 to pass through and slide in the first direction X, realizing a floating connection between the correction push plate 400 and the slider support 310.
[0072] The slider bracket 310 is slidably mounted on the correction push plate 400 along the first direction X. The front end of the slider bracket 310 (the end near the positioning mechanism 100) has a stop portion 311 for engaging with the stop surface 130 of the positioning mechanism 100. The rear end of the slider bracket 310 (the end near the drive mechanism 200) has a mounting hole for connecting the first guide pin 510. The slider bracket 310 also has a groove 312 extending along the second direction Y for mounting a pair of correction sliders 320 and for the correction push plate 400 to pass through.
[0073] A pair of calibration sliders 320 are symmetrically mounted in the grooves 312 of the slider bracket 310 and can move along the second direction Y. Each calibration slider 320 is provided with a sliding guide portion 323 that slides in cooperation with the grooves 312 of the slider bracket 310. The front end of each calibration slider 320 (the end near the positioning mechanism 100) is provided with an arc-shaped calibration surface 321. On opposite sides along the second direction Y of each calibration slider 320, there are respectively a follower arc surface 322 for cooperating with the guide arc surface 410 of the calibration push plate 400 and a mounting hole 324 for fixing the second guide pin 550.
[0074] The first guide pin 510 of the first elastic reset mechanism is a height-equal screw that passes through the through hole 430 on the correction push plate 400 (the two can be fitted together with the help of the bushing 530) and is screwed into the mounting hole of the slider bracket 310. The first reset spring 520 is sleeved on the first guide pin 510 and is located between the slider bracket 310 and the correction push plate 400. The first elastic reset mechanism enables the slider bracket 310 and the correction push plate 400 to form a floating connection, allowing the correction push plate 400 to push the slider bracket 310 to move in the first direction X. After the slider bracket 310 is limited, the correction push plate 400 can continue to move forward to drive a pair of correction sliders 320 to open and achieve secondary correction.
[0075] The second guide pin 550 of the second elastic reset mechanism is a height-equal screw that passes through the light hole 315 of the slider bracket 310 and is screwed into the mounting hole of the calibration slider 320. The second reset spring 560 is sleeved on the second guide pin 550 and is located between the slider bracket 310 and the calibration slider 320. The second elastic reset mechanism is used to drive the two calibration sliders 320 back to their close-to-each-other position after calibration.
[0076] The working process of the positioning and correction device includes the following five stages.
[0077] In the initial stage, combined Figure 7 As shown. The drive mechanism 200 is in a retracted state away from the positioning mechanism 100. The correction push plate 400 and the slider bracket 310 are in a relatively extended state under the action of the first return spring 520, which is not compressed. The two correction sliders 320 are in a closed state close to each other under the action of the second return spring 560. The workpiece 800 (pressure sensor) to be corrected can be placed on the bearing surface 110 of the positioning mechanism 100 by a robot or other equipment. The outer edge of the workpiece 800 is in contact with multiple positioning bearings 160. At this time, the workpiece 800 may be deflected to a large or small angle due to feeding vibration or the robot carrying the material. Its feature surface 820 (cut plane) is not parallel to the correction reference surface 120 of the positioning mechanism 100.
[0078] In the advance stage, combined with Figure 8 As shown. The drive mechanism 200 extends under control command, pushing the correction push plate 400 forward along the first direction X. The correction push plate 400 pushes the slider bracket 310 (transmitting force through the first return spring 520), and the slider bracket 310 drives the two correction sliders 320 forward together. When the stop portion 311 of the slider bracket 310 contacts the stop surface 130 of the positioning mechanism 100 (refer to...), Figure 1 , Figure 3 and Figure 5 As shown), the slider support 310 stops moving forward. At this time, the correction surface 321 of the correction slider 320 is in clearance fit with the correction reference surface 120 of the positioning mechanism 100, and at least one correction surface 321 of the correction slider 320 is in contact with the feature surface 820 of the workpiece 800 with a deflection angle.
[0079] One calibration phase, combined with Figure 9 As shown. The drive mechanism 200 continues to move forward, at which point the slider support 310 is limited and cannot move. The correction push plate 400 compresses the first return spring 520 and continues to move forward. The guide arc surface 410 of the correction push plate 400 and the follower arc surface 322 of the correction slider 320 slide relative to each other (refer to...). Figure 2 , Figure 4 and Figure 6As shown, the two correction sliders 320 are forced to move away from each other along the second direction Y. During the separation process, the correction surface 321 of the correction slider 320 maintains a small gap and slides into contact with the correction reference surface 120 of the positioning mechanism 100, thereby actuating the feature surface 820 of the workpiece 800. This causes the workpiece 800 to rotate around its center under the support of multiple positioning bearings 160 until the feature surface 820 of the workpiece 800 is substantially parallel to the correction reference surface 120, thus achieving preliminary correction of the workpiece 800 with angular deflection. During one correction process, due to the guidance of the correction surface 321, even if the workpiece 800 has a large deflection angle, the correction surface 321 can smoothly slide into the area where the feature surface 820 of the workpiece 800 is located.
[0080] Secondary correction stage, combined with Figure 10 As shown. After the two correction sliders 320 move away from each other along the second direction Y and complete one correction of the workpiece 800, the drive mechanism 200 continues to drive the correction push plate 400 forward along the first direction X. At this time, the two correction sliders 320 have opened and are respectively located on both sides of the feature surface 820 of the workpiece 800, forming lateral support and limitation for the feature surface 820 of the workpiece 800. The correction push surface 420 (plane) of the correction push plate 400 continues forward until it presses against the feature surface 820 of the workpiece 800, eliminating residual angular deflection, so that the workpiece 800 is accurately corrected into place. During the secondary correction process, since the two correction sliders 320 limit the two sides of the feature surface 820 of the workpiece 800, the pressure applied by the correction push surface 420 will not cause the workpiece 800 to deflect at a large angle again. Instead, it will smoothly push the feature surface 820 of the workpiece 800 to be completely parallel and aligned with the first positioning surface, so that the three planes of the feature surface 820 of the workpiece 800, the correction reference surface 120 of the positioning mechanism 100 and the correction push surface 420 of the correction push plate 400 are almost coplanar, eliminating the small angle deflection that may remain after the first correction, and realizing the precise correction of the workpiece 800.
[0081] Reset Phase. After calibration, the drive mechanism 200 can retract under control command, causing the calibration push plate 400 to move backward along the first direction X. The first reset spring 520 then pushes the slider bracket 310 to reset, restoring the slider bracket 310 and the calibration push plate 400 to their initial relative positions. Simultaneously, the second reset spring 560 drives the two calibration sliders 320 to reset to their closed position, allowing the positioning calibration device to return to its original position. Figure 7 The initial state shown indicates that the device is waiting for the next workpiece.
[0082] The positioning correction device of this application can be applied to precision assembly scenarios with angular positioning requirements, such as pressure sensors and encoders.
[0083] Finally, it should be noted that the above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.
Claims
1. A positioning and calibration device, characterized in that, include: The positioning mechanism is provided with a bearing surface and a correction reference surface. The bearing surface is used for placing the workpiece to be corrected, and the correction reference surface is used to adapt to the feature surface of the workpiece to be corrected. The drive mechanism has an output end that can move in a first direction; A pair of calibration sliders, each having a calibration surface facing the positioning mechanism, the calibration surface partially engaging with the calibration reference surface in a direction perpendicular to the bearing surface, and partially extending beyond the calibration reference surface for engaging with the feature surface; The output end of the driving mechanism can drive the pair of correction sliders to move toward the positioning mechanism in a first direction and move away from each other in a second direction, and the correction surfaces of the pair of correction sliders can slide and engage with the correction reference surface.
2. The positioning and correction device as described in claim 1, characterized in that, The positioning correction device further includes: The slider bracket is slidably disposed along the first direction; The pair of correction sliders are slidably supported on the slider bracket along the second direction.
3. The positioning and correction device as described in claim 2, characterized in that, The positioning mechanism is further provided with a stop surface, and the slider bracket is provided with a stop portion facing the positioning mechanism; Wherein, when the stop part abuts against the stop surface, the correction surface of the pair of correction sliders is in clearance fit with the correction reference surface.
4. The positioning and correction device as described in claim 3, characterized in that, As the drive mechanism moves toward the positioning mechanism along the first direction: The slider bracket and the pair of correction sliders move along the first direction until the stop portion abuts against the stop surface; The pair of correction sliders then move away from each other along the second direction and slide relative to the correction reference surface, so that the feature surface of the workpiece is parallel to the correction reference surface.
5. The positioning and correction device as described in any one of claims 2 to 4, characterized in that, The positioning correction device further includes: A correction push plate is connected to the output end of the drive mechanism and extends between the pair of correction sliders; The slider bracket is floatingly supported on the correction push plate along the first direction. The correction push plate can drive the slider bracket and the pair of correction sliders to move along the first direction, and can also drive the pair of correction sliders to move along the second direction.
6. The positioning and correction device as described in claim 5, characterized in that, The correction push plate is provided with a pair of guide arc surfaces, and each correction slider is provided with a follower arc surface that slides in cooperation with the guide arc surfaces; After the slider bracket is limited, it moves along the first direction with the correction push plate, and the guide arc surface slides relative to the follower arc surface, driving the pair of correction sliders to move along the second direction.
7. The positioning and correction device as described in claim 5, characterized in that, The correction push plate has a correction push surface facing the positioning mechanism, the correction push surface is adapted to the feature surface of the workpiece to be corrected, the correction push surface partially engages with the correction reference surface in a direction perpendicular to the bearing surface, and partially extends beyond the correction reference surface to engage with the feature surface of the workpiece to be corrected. After the pair of correction sliders move away from each other along the second direction, the driving mechanism can also drive the correction push plate to move along the first direction until the correction push surface abuts against the correction reference surface.
8. The positioning and correction device as described in claim 7, characterized in that, The feature surface of the workpiece to be corrected, the correction reference surface, and the correction push surface are all planes; The correction surface is a circular arc surface.
9. The positioning and correction device as described in claim 5, characterized in that, The slider bracket is provided with a groove extending along the second direction, and the pair of correction sliders are accommodated in the groove and are provided with a sliding guide that slides in cooperation with the groove. The correction push plate extends through the groove between the pair of correction sliders.
10. The positioning and correction device as described in claim 5, characterized in that, The positioning correction device further includes a first elastic reset mechanism, which includes a first guide pin extending along the first direction and a first reset spring. One end of the first guide pin is fixed to the slider bracket, and the other end can slide through the correction push plate; The first reset spring is sleeved on the first guide pin and acts between the slider bracket and the correction push plate.
11. The positioning and correction device as described in claim 2, characterized in that, The positioning correction device further includes a second elastic reset mechanism, which includes a second guide pin extending along the second direction and a second reset spring. One end of the second guide pin is fixed to the correction slider, and the other end can slide through the slider bracket; The second reset spring is sleeved on the second guide pin and acts between the slider bracket and the correction slider.
12. The positioning and correction device as described in claim 1, characterized in that, The positioning and correction device further includes at least one positioning bearing, which is disposed on the bearing surface and is used to roll with the outer edge of the workpiece to be corrected.
13. The positioning and correction device as described in claim 12, characterized in that, The at least one positioning bearing includes a plurality of positioning bearings that form a contour region adapted to the outer edge of the workpiece to be corrected.