Positioning device for side hole of rotary part

Abstract

The utility model discloses a positioning device for a side hole of a rotating part. The positioning device comprises a bearing part, a positioning part and a rotating device for controlling the bearing part to rotate relative to the positioning part, the bearing part is used for fixing the rotating part; the positioning piece comprises a telescopic head and a pre-tightening piece, and the telescopic head abuts against the side wall of the rotating piece under the action of the pre-tightening force of the pre-tightening piece; the rotating device controls the rotating part to rotate around a rotating shaft of the rotating part relative to the telescopic head, the telescopic head corresponds to a rotating track line of the side hole, and when the telescopic head rotates to correspond to the side hole of the rotating part, the telescopic head is inserted into the side hole under the action of the pre-tightening force of the pre-tightening part. According to the principle that the pre-tightening telescopic head rotating in the circumferential direction relative to the rotating piece is inserted back into the telescopic hole when encountering the side hole, the side hole of the rotating piece can be conveniently and rapidly positioned.

Description

Technical Field

[0001] The utility model relates to the technical field of detection and positioning tooling, in particular to a side hole positioning device for a rotary member. Background Art

[0002] Some industrial products have spiral workpieces, namely, spiral parts. The cross-section of these spiral parts is circular. For example, the front and rear mesh covers of a fan are a type of spiral part. The side walls of the spiral parts are usually provided with mounting holes. These side holes are usually used to connect bolts and other connectors. However, these mounting holes are small while the spiral parts are large. Therefore, during the assembly process of these products, it is difficult to quickly determine the positions of these mounting holes, which affects the production efficiency of the products. Utility Model Content

[0003] In order to solve the problem of difficulty in positioning the side hole of the rotating member, the utility model proposes a rotating member side hole positioning device, which realizes convenient and rapid positioning of the rotating member side hole by using the principle that a pre-tightened telescopic head rotating circumferentially relative to the rotating member is inserted back into the telescopic hole when encountering the side hole.

[0004] The technical solution adopted by the utility model is to design a side hole positioning device of a rotating member, comprising a bearing member, a positioning member and a rotating device for controlling the bearing member to rotate relative to the positioning member; the bearing member is used to fix the rotating member; the positioning member comprises a telescopic head and a pre-tightening member, the telescopic head abuts against the side wall of the rotating member under the action of the pre-tightening force of the pre-tightening member; the rotating device controls the rotating member to rotate around the rotating axis of the rotating member relative to the telescopic head, the telescopic head corresponds to the rotating trajectory line of the side hole, and when the telescopic head rotates to correspond to the side hole of the rotating member, the telescopic head is inserted into the side hole under the action of the pre-tightening force of the pre-tightening member.

[0005] In some embodiments, the positioning member further includes a plurality of guide wheels disposed around the side wall of the rotating member, and the guide wheels and the telescopic head limit the rotating member from rotating around a fixed axis.

[0006] In certain embodiments, the extension and retraction of the guide wheel relative to the side wall of the rotating member is controlled by a retractable device.

[0007] In certain embodiments, the preload member further includes a preload spring and a telescopic control device, the telescopic head is disposed on the preload spring, and the telescopic control device controls the distance of the preload spring relative to the rotating member.

[0008] In some embodiments, the preload spring is a U-shaped leaf spring, one end of which is connected to the telescopic head and the other end of which is connected to the telescopic control device.

[0009] In some embodiments, the positioning member further comprises a displacement sensor, which detects the movement of the telescopic head.

[0010] In some embodiments, the displacement sensor is a micro switch.

[0011] In certain embodiments, a roller that abuts against the rotating member is disposed at the end of the telescopic head, and the diameter of the roller is larger than the diameter of the side hole.

[0012] In some embodiments, support guide wheels are provided on both sides of the telescopic head relative to the rotation direction of the rotating member.

[0013] In some embodiments, the rotating device includes a turntable for carrying the rotating member, and the turntable drives the rotating member to rotate.

[0014] In some embodiments, the turntable has a plurality of guide slopes distributed around its circumference and inclined toward the center of the disk, and the guide slopes guide the rotating member onto the turntable.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model utilizes a pre-tightening member to make the telescopic head contact the side wall along the opening of the mesh cover, and the telescopic head rotates along the spiral line where the screw hole is relative to the mesh cover. When the telescopic head is inserted into the side hole, the spiral member and the telescopic head stop rotating relative to each other, so that the position of the telescopic head is the position of the screw hole, thereby achieving rapid positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is described in detail below in conjunction with specific embodiments and drawings. In order to show details and facilitate understanding of its principles, it is not necessarily drawn to scale, and similar reference numerals may describe similar components in different views. The drawings generally illustrate the embodiments discussed herein by way of example and not limitation. Among them:

[0018] Figure 1 is a schematic diagram of a positioning device according to an embodiment.

[0019] Figure 2 yes Figure 1 Schematic diagram of the left side.

[0020] Figure 3 It is a three-dimensional schematic diagram of the positioning device.

[0021] Figure 4 yes Figure 3 An enlarged schematic diagram of point A in FIG.

[0022] Figure 5 yes Figure 1Schematic top view of .

[0023] Figure 6 yes Figure 5 An enlarged schematic diagram of point B in FIG.

[0024] In the figure, 1, mesh cover; 101, screw hole; 2, telescopic head; 3, guide wheel; 4, telescopic device; 5, U-shaped leaf spring; 6, micro switch; 7, roller; 8, supporting guide wheel; 9, turntable; 10, connecting plate; 11, telescopic control device; 12, workbench; 13, servo motor; 14, guide plate. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention, and the technical solution of the present invention is further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments, and the following embodiments do not limit the utility model involved in the claims. In addition, all combinations of the features described in the embodiments are not necessarily required for the solution of the utility model.

[0026] The principle and structure of the present utility model are described in detail below with reference to the accompanying drawings and embodiments.

[0027] Example

[0028] like Figures 1 to 6 As shown, the side hole positioning device of the rotary member includes a bearing member, a positioning member and a rotating device for controlling the bearing member to rotate relative to the positioning member; the bearing member is used to fix the rotary member; the positioning member includes a telescopic head 2 and a pre-tightening member, and the telescopic head 2 contacts the side wall of the rotary member under the action of the pre-tightening force of the pre-tightening member; the rotating device controls the rotary member to rotate relative to the telescopic head 2 around the rotary axis of the rotary member, and the telescopic head 2 corresponds to the rotary trajectory line of the side hole. When the telescopic head 2 rotates to correspond to the side hole of the rotary member, the telescopic head 2 is inserted into the side hole under the action of the pre-tightening force of the pre-tightening member. The rotary trajectory line of the side hole is the circumferential line where the trajectory of the side hole when rotating around the rotary axis of the rotary member is located.

[0029] The rotating part of this embodiment is the fan mesh cover 1, and the side hole is a screw hole 101 located on the side wall of the mesh cover 1. The fan mesh assembly is composed of five parts, namely, the front mesh cover 1, the rear mesh cover 1, the fan blades, the buckle, and the screw. The difficulty in the automatic pre-assembly production of the mesh cover 1 assembly is the accurate alignment of the screw holes 101 of the front mesh cover 1 and the rear mesh cover 1. In particular, the position feature of the screw hole 101 of the front mesh cover 1 is not obvious, and it is difficult to find and determine due to factors such as product deformation.

[0030] The beneficial effect brought about by such a setting is: when positioning, first put the mesh cover 1 on the supporting member, and then use the pre-tightening member to make the telescopic head 2 contact with the side wall along the mouth of the mesh cover 1, and the telescopic head 2 rotates along the screw hole 101 relative to the spiral line where the mesh cover 1 is located. When the telescopic head 2 rotates to the position of the screw hole 101, the telescopic head 2 is inserted into the screw hole 101. At this time, it means that the position of the telescopic head 2 is the position of the screw hole 101.

[0031] When the telescopic head 2 is inserted into the side hole, the swivel member and the telescopic head 2 stop rotating relative to each other, so that the position of the telescopic head 2 is the position of the screw hole 101, thereby achieving rapid positioning.

[0032] The positioning member also includes a plurality of guide wheels 3 arranged around the side wall of the rotating member, and the guide wheels 3 and the telescopic head 2 limit the rotating member from rotating around the fixed axis. In this embodiment, there are two guide wheels 3, and the two guide wheels 3 and the telescopic head 2 are evenly distributed around the circumference of the mesh cover 1.

[0033] The beneficial effect brought about by such a configuration is that the guide wheel 3 and the telescopic head 2 surround the mesh cover 1, so that the mesh cover 1 cannot move in the radial direction, thereby fixing the position of the rotating axis of the mesh cover 1, so that when the mesh cover 1 rotates around the rotating axis relative to the telescopic head 2, the distance between the telescopic head 2 and the rotating axis remains unchanged, so that the telescopic head 2 always has a pre-tightening resistance effect on the side wall of the mesh cover 1, and once the telescopic head 2 encounters the screw hole 101, it can be accurately inserted into the screw hole 101 under the action of the pre-tightening force.

[0034] The extension and retraction of the guide wheel 3 relative to the side wall of the rotating member is controlled by a retractable device 4. In this embodiment, the retractable device 4 is a cylinder, and the guide wheel 3 is arranged on the retractable rod of the cylinder.

[0035] The beneficial effect brought about by such arrangement is that the guide wheel 3 is moved away from the mesh cover 1 by contraction of the telescopic device 4, which is beneficial for taking away the mesh cover 1 or putting it between the guide wheel and the telescopic head 2, while the guide wheel 3 is brought into contact with the mesh cover 1 by extension of the telescopic device 4, which is beneficial for limiting the rotation axis of the mesh cover 1 together with the telescopic head 2.

[0036] The preload member further comprises a preload spring and a telescopic control device 11, the telescopic head 2 is arranged on the preload spring, and the telescopic control device 11 controls the distance of the preload spring relative to the rotating member. The telescopic control device 11 of this embodiment is a cylinder, and the preload spring is connected to the telescopic rod of the cylinder.

[0037] The beneficial effect brought by such a setting is that the cylinder controls the approach or distance of the telescopic head 2 relative to the mesh cover 1 through the preload spring, which not only realizes the movement of the telescopic head 2 relative to the mesh cover 1, but also realizes that the telescopic head 2 has an elastic preload relative to the mesh cover 1 when it contacts the mesh cover 1, thereby facilitating the insertion of the telescopic head 2 into the screw hole 101. When the telescopic head 2 is controlled to be away from the mesh cover 1, it is convenient to take away the mesh cover 1 or put it between the guide wheel and the telescopic head 2. The preload spring ensures that the telescopic head 2 can still be close to the side wall of the mesh cover 1 when the mesh cover 1 is deformed.

[0038] The preload spring is a U-shaped leaf spring 5 , one end of which is connected to the telescopic head 2 and the other end of which is connected to the telescopic control device 11 .

[0039] The beneficial effect brought about by such a setting is: the U-shaped leaf spring 5, also called U-shaped spring or U-shaped spring leaf, is not only simple in structure compared to the cylindrical spring, but also has a stable direction of elastic force of the U-shaped leaf spring 5, ensuring that the telescopic head 2 is stably facing the side wall of the mesh cover 1. If a cylindrical spring is used, the end of the cylindrical spring is prone to deflection in multiple directions, thereby causing the telescopic head 2 to deviate from the spiral line corresponding to the screw hole 101. The telescopic directionality of the U-shaped leaf spring 5 is relatively stable, which can avoid multi-directional tilting of the end.

[0040] The positioning member further comprises a displacement sensor, which detects the movement of the telescopic head 2 .

[0041] The beneficial effect brought about by such a configuration is that when the telescopic head 2 is inserted into the screw hole 101, the displacement of the telescopic head 2 relative to the mesh cover 1 changes, and the displacement can be easily detected by a displacement sensor, so that the position of the screw hole 101 can be easily determined by the movement of the telescopic head 2 detected by the displacement sensor.

[0042] Specifically, the displacement sensor of this embodiment is a micro switch 6. The telescopic head 2 is arranged on the touch portion of the micro switch 6, and the micro switch 6 can sense the movement of the touch portion. However, when the telescopic head 2 is inserted into the screw hole 101, the touch portion extends out, thereby being sensed by the micro switch 6. The sensed signal is a signal that the telescopic head 2 is positioned at the position of the screw hole 101.

[0043] The beneficial effects brought about by such arrangement are: the micro switch 6 has a simple structure and a compact size, and is convenient to be arranged at the end of the spring; moreover, the micro switch 6 has a low cost and is suitable for detecting only simple actions of extension and retraction.

[0044] The end of the telescopic head 2 is provided with a roller 7 that abuts against the rotating member, and the diameter of the roller 7 is larger than the diameter of the side hole. When the roller 7 rolls along the mesh cover 1, the roller 7 enters the screw hole 101, causing the telescopic head 2 to produce a slight displacement, thereby triggering the micro switch 6, so as to determine the exact position of the screw hole 101.

[0045] The beneficial effect brought by such a configuration is that the telescopic head 2 contacts the side wall of the mesh cover 1 through the roller 7, so that when the telescopic head 2 rotates relative to the mesh cover 1, the friction force of the telescopic head 2 on the side wall of the mesh cover 1 is reduced, and when the end of the telescopic head 2 corresponds to the screw hole 101, the roller 7 is inserted into the screw hole 101. The diameter of the roller 7 is larger than the aperture of the side hole, so that only a part of the roller 7 falls into the screw hole 101, and the entire roller 7 does not fall into the screw hole 101, thereby preventing the telescopic head 2 from being inserted too deeply into the screw hole 101, making it difficult to remove the telescopic head 2.

[0046] The telescopic head 2 is provided with support guide wheels 8 on both sides of the rotation direction of the swivel member. In the rotation direction, the telescopic head 2 is provided with support guide wheels 8 fixedly connected to the telescopic head 2 on both sides, and the two support guide wheels 8 are symmetrical with respect to the telescopic head 2. The support guide wheels 8 and the micro switch 6 are fixed on the same connecting plate 10.

[0047] The beneficial effect brought about by such a configuration is that support guide wheels 8 fixedly connected to the telescopic head 2 are arranged on both sides of the telescopic head 2, and the two support guide wheels 8 together with the two guide wheels 3 play a fixing role for the mesh cover 1, and at the same time, the two support guide wheels 8 play an auxiliary supporting role for the telescopic head 2, preventing the support head from tilting relative to the mesh cover 1, and guiding the movement of the telescopic head 2.

[0048] The rotating device includes a turntable 9 for carrying the rotating member, and the turntable 9 drives the rotating member to rotate. The turntable 9 can be driven to rotate by a servo motor 13 or other devices. The turntable 9 is arranged in the middle of the workbench 12, and the cylinder for controlling the guide wheel 3 and the telescopic head 2 is arranged on the side of the workbench 12. The turntable 9 rotates, and the mesh cover 1 is driven to rotate by friction.

[0049] The beneficial effect brought about by such a setting is: the turntable 9 can be used to achieve stable support for the mesh cover 1, so that the mesh cover 1 and the turntable 9 can rotate coaxially. When the roller 7 falls into the front mesh screw hole 101, the micro switch 6 is triggered. After the signal is transmitted to the servo motor 13, the servo motor 13 can control the turntable 9 to stop rotating in time, and the positioning is timely and accurate.

[0050] The turntable 9 is circumferentially provided with several guiding slopes inclined toward the center of the disk, and the guiding slopes guide the rotating member to the turntable 9. In this embodiment, three guiding plates 14 are fixed on the workbench 12 around the turntable 9, and the upper ends of the guiding plates 14 are bent outward relative to the turning to form the guiding slopes.

[0051] The beneficial effect brought about by such arrangement is that when the mesh cover 1 is placed from top to bottom on the turntable 9, the guide bevel has a guiding effect on the end surface of the mesh cover 1, so that the mesh cover 1 and the turntable 9 are initially positioned, preventing the mesh cover 1 from deviating too much from the turntable 9 and escaping from the turntable 9.

[0052] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described, or replace them in similar ways, without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0053] Although some terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model. The execution order of actions, steps, etc. in the devices and methods shown in the specification and the drawings can be implemented in any order as long as there is no special explicit limitation on the order and the output of the previous processing is not used in the subsequent processing. Similar sequential terms (for example, "first", "next", "secondly", "again", "then", etc.) used for the convenience of description do not mean that they must be implemented in such an order.

[0054] Those skilled in the art should understand that all directional references (for example, above, below, upward, up, downward, down, top, bottom, left, right, vertical, horizontal, etc.) are used descriptively in the drawings to facilitate the reader's understanding, and do not represent limitations (for example, on position, orientation or use, etc.) on the scope of the present invention as defined by the appended claims. They are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the referred device or element must have a specific orientation or be constructed and operated in a specific orientation. The directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0055] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0056] In addition, some vague terms (e.g., substantially, certain, generally, etc.) may refer to slight inaccuracies or slight deviations of conditions, quantities, values, or dimensions, some of which are within the manufacturing deviation or tolerance range. It should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meanings and therefore cannot be understood as limiting the scope of protection of this application.

Claims

1. The side hole positioning device of the rotary member is characterized in that: It includes a bearing member, a positioning member and a rotating device for controlling the bearing member to rotate relative to the positioning member; the bearing member is used to fix the rotating member; the positioning member includes a telescopic head and a pre-tightening member, and the telescopic head abuts against the side wall of the rotating member under the action of the pre-tightening force of the pre-tightening member; the rotating device controls the rotating member to rotate relative to the telescopic head around the rotating axis of the rotating member, the telescopic head corresponds to the rotating trajectory line of the side hole, and when the telescopic head rotates to correspond to the side hole of the rotating member, the telescopic head is inserted into the side hole under the action of the pre-tightening force of the pre-tightening member.

2. The swivel member side hole positioning device according to claim 1, characterized in that: The positioning member also includes a plurality of guide wheels arranged around the side wall of the rotating member, and the guide wheels and the telescopic head limit the rotating member from rotating around the fixed axis.

3. The swivel member side hole positioning device according to claim 2, characterized in that: The extension and retraction of the guide wheel relative to the side wall of the rotating member is controlled by a retractable device.

4. The swivel member side hole positioning device according to claim 1, characterized in that: The preload member further comprises a preload spring and a telescopic control device, the telescopic head is arranged on the preload spring, and the telescopic control device controls the distance between the preload spring and the rotating member.

5. The swivel member side hole positioning device according to claim 4, characterized in that: The preload spring is a U-shaped leaf spring, one end of which is connected to the telescopic head and the other end of which is connected to the telescopic control device.

6. The swivel member side hole positioning device according to claim 1, characterized in that: The positioning member further comprises a displacement sensor, which detects the movement of the telescopic head.

7. The swivel member side hole positioning device according to claim 6, characterized in that: The displacement sensor is a micro switch.

8. The swivel member side hole positioning device according to claim 1, characterized in that: The end of the telescopic head is provided with a roller that abuts against the rotating member, and the diameter of the roller is larger than the aperture of the side hole.

9. The swivel member side hole positioning device according to claim 1, characterized in that: Support guide wheels are arranged on both sides of the telescopic head relative to the rotation direction of the rotating member.

10. The swivel member side hole positioning device according to claim 1, characterized in that: The rotating device includes a rotating disk for carrying the rotating member, and the rotating disk drives the rotating member to rotate.

11. The swivel member side hole positioning device according to claim 10, characterized in that: The rotating disk is circumferentially provided with a plurality of guiding inclined surfaces inclined toward the center of the disk, and the guiding inclined surfaces guide the rotating member to the rotating disk.

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