A type of indexing device

Abstract

This invention relates to an indexing device, comprising a base plate, a drive mechanism disposed at one end of the base plate, a turntable, and a transmission component slidably connected to the base plate. The drive mechanism drives the transmission component to reciprocate linearly between a first position and a second position. The turntable is disposed on the side of the transmission component away from the base plate and has only one degree of freedom of rotation about an axis. Multiple cam followers are evenly spaced along the circumference of the turntable facing the transmission component, and the transmission component is disposed between the cam followers to drive the turntable to rotate. When the transmission component is in the first or second position, it engages between two adjacent cam followers to limit the rotation of the turntable. The indexing device disclosed in this invention allows for two indexing operations in one cycle of the transmission component, and multi-angle indexing can be performed by adjusting the number of cycles of the transmission component. The indexing device relies on a self-locking structural positioning method to lock and position the indexing, achieving high positioning accuracy and suitable for heavy-duty applications.

Description

Technical Field

[0001] This invention relates to the field of mechanical technology, and in particular to an indexing device. Background Technology

[0002] In machining processes, precise positioning at a preset angle is usually required before subsequent machining operations can proceed. Existing indexing devices can be broadly categorized into two types. One type achieves indexing through mechanisms such as Geneva wheels and ratchet wheels. These devices are bulky and costly, with complex parts that are difficult to manufacture, install, and maintain after wear. Furthermore, they can only be selected from pre-set workstations. The other type achieves indexing through a rotary cylinder structure. These devices typically only allow for two selectable positions and cannot be used in heavy-duty applications. Summary of the Invention

[0003] Therefore, it is necessary to provide an indexing device that can be used in heavy-duty applications and achieves accurate indexing and positioning at multiple positions, addressing the aforementioned technical problems.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] This invention discloses an indexing device, including a base plate and a driving mechanism disposed at one end of the base plate, and further including: a turntable and a transmission member slidably connected to the base plate, wherein the driving mechanism drives the transmission member to reciprocate linearly between a first position and a second position; the turntable is disposed on the side of the transmission member away from the base plate, and a plurality of cam followers are evenly spaced along the circumference of the turntable facing the transmission member, and the transmission member is disposed between the cam followers to drive the turntable to rotate; when the transmission member is in the first position or the second position, the transmission member is engaged between two adjacent cam followers to limit the rotation of the turntable.

[0006] In one embodiment, the indexing device further includes a guide mechanism disposed between the driving mechanism and the transmission component. The guide mechanism includes a slider and a guide rail. The slider is disposed on the driving side of the driving mechanism and fixed on the base plate. One end of the guide rail is connected to the driving mechanism and the other end is connected to the transmission component. The slider and the guide rail form a sliding pair.

[0007] Preferably, the number of sliders is multiple.

[0008] In one embodiment, the guide rail is connected to the drive mechanism via a floating joint.

[0009] In one embodiment, the turntable is provided with a mounting hole, and a screw is connected to one side of the cam follower. The end of the screw away from the cam follower passes through the mounting hole and is fastened by a nut.

[0010] In one embodiment, the working surface of the transmission component includes two centrally symmetrical first surfaces and two centrally symmetrical second surfaces. The first surfaces are parallel to the direction of movement of the transmission component, and the included angle between the first surfaces and the second surfaces is less than or greater than 90°.

[0011] In one embodiment, the second surface is a sloped surface and / or a curved surface.

[0012] In one embodiment, the first surface and the second surface have a smooth transition.

[0013] In one embodiment, the number of cam followers is 5 to 19.

[0014] The technical solution adopted in this invention can achieve the following beneficial effects:

[0015] The indexing device disclosed in this invention has an ingenious structural design. It can achieve multi-angle indexing through the linear reciprocating motion of the transmission component. The structure is stable and reliable with high indexing accuracy. One cycle of the transmission component can perform two indexing operations. By adjusting the number of cycles of the transmission component, multi-angle indexing can be performed.

[0016] The indexing device disclosed in this invention has simple structure of each component that requires no special processing, is easy to install, and is easy to maintain.

[0017] The indexing device disclosed in this invention not only performs indexing through the cyclic action of the transmission component, but also automatically performs positioning and locking after indexing. This positioning method, which relies on the self-locking property of the structure, has high accuracy, can be used in heavy-duty applications, and has a wide range of applications. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the indexing device disclosed in an embodiment of the present invention;

[0019] Figure 2 for Figure 1 The main view;

[0020] Figure 3 for Figure 1 Top view;

[0021] Figure 4 This is a schematic diagram of the component movement states of the indexing device disclosed in an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the transmission component in its first position.

[0023] Figure 6 This is a schematic diagram of the transmission component in the second position.

[0024] Figure 7 This is a schematic diagram of the component movement state of an indexing device disclosed in another embodiment of the present invention;

[0025] Explanation of reference numerals in the attached figures:

[0026] 100 - Substrate; 200 - Drive mechanism; 210 - Mounting base; 300 - Floating connector;

[0027] 400 - Guide mechanism, 410 - Guide rail, 420 - Slider;

[0028] 500 - Turntable, 510 - Cam follower, 520 - Screw, 530 - Nut;

[0029] 600 - Transmission component, 610 - First side, 620 - Second side. Detailed Implementation

[0030] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0031] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," "top," "bottom," "end," "top," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] This invention discloses an indexing device, such as... Figures 1 to 3As shown, the disclosed indexing device includes a base plate 100, a drive mechanism 200, a transmission component 600, and a turntable 500. The drive mechanism 200 is fixed to one end of the base plate 100 by two mounting seats 210. The output end of the drive mechanism 200 is connected to the transmission component 600, and the transmission component 600 is slidably connected to the base plate 100. The turntable 500 is provided on the side of the transmission component 600 away from the base plate 100. The drive mechanism 200 drives the transmission component 600 to perform linear reciprocating motion, and the transmission component 600 can drive the turntable 500 to rotate during the reciprocating motion.

[0034] Specifically, a plurality of cam followers 510 are evenly spaced along the circumference of the turntable 500 facing the transmission member 600. The transmission member 600 is positioned among the cam followers 510, and the working surface of the transmission member 600 is in contact with the working surface of at least one cam follower 510. The axes of each cam follower 510 are parallel to the axis of the turntable 500. The two working surfaces of the transmission member 600 and the cam follower 510 in contact with each other generate torque, thereby realizing the linear reciprocating motion of the transmission member 600 to drive the turntable 500 to rotate.

[0035] It should be noted that the axis of the turntable 500 is perpendicular to the direction of movement of the transmission component 600, and the turntable 500 has the degree of freedom to rotate around its axis.

[0036] Furthermore, such as Figures 4 to 6 As shown, the drive mechanism 200 can drive the transmission member 600 to perform linear reciprocating motion between a first position and a second position. The drive mechanism 200 can be a linear output device such as a cylinder, hydraulic cylinder, or electric cylinder, and the present invention does not impose specific limitations on this. The working surface of the transmission member 600 includes two centrally symmetrically arranged first surfaces 610 and two centrally symmetrically arranged second surfaces 620. The first surfaces 610 can be straight surfaces, parallel to the direction of movement of the transmission member 600, and the distance between the two first surfaces 610 is equal to the distance between the opposite sides of two adjacent cam followers 510. The second surfaces 620 can be inclined surfaces and / or curved surfaces.

[0037] When the transmission member 600 is in the first position, it locks the turntable 500 between two adjacent cam followers 510, stopping the turntable 500 from rotating. During locking, the indexing device of this invention completes one indexing operation, simultaneously performing self-locking positioning of the indexing. At this time, the two first surfaces 610 of the transmission member 600 are in contact with the working surfaces of the two adjacent cam followers 510.

[0038] The number of cam followers 510 is odd. During the movement of the transmission 600 from the first position to the second position, the second surface 620 contacts the working surface of the cam follower 510. Under the force amplification effect of the inclined surface and / or the arc surface, the transmission 600 drives the turntable 500 to rotate clockwise.

[0039] Similarly, when the transmission member 600 moves to the second position, the two first surfaces 610 of the transmission member 600 contact the working surfaces of the two adjacent cam followers 510 respectively. The transmission member 600 locks the turntable 500 between the two adjacent cam followers 510, and the turntable 500 stops rotating. During the movement of the transmission member 600 from the second position to the first position, the second surface 620 contacts the working surface of the cam follower 510, driving the turntable 500 to continue rotating clockwise.

[0040] Furthermore, the first surface 610 and the second surface 620 of the transmission component 600 can transition smoothly, improving the smoothness of the cooperation between the cam follower 510 and the transmission component 600 during acceleration and deceleration.

[0041] The indexing device disclosed in this invention allows for two indexing operations in one cycle of the transmission component 600. Multi-angle indexing can be performed by adjusting the number of cycles of the transmission component 600. The cyclic operation of the transmission component 600 not only indexes but also locks and positions the indexing. This positioning method, relying on the self-locking property of the structure, is reliable, has high positioning accuracy, and can be used in heavy-duty applications. The cam follower 510, as the driven structure, has a simple structure and a long service life.

[0042] In one optional embodiment of the present invention, unlike the above embodiment, the number of cam follower 510 can also be even, and the two centrally symmetrical first surfaces 610 have a certain angle (not equal to 0°) with the direction of movement of the transmission member 600. In this way, during the process of the transmission member 600 moving from the first position to the second position or from the second position to the first position, the first surface 610 can also drive the turntable 500 to rotate.

[0043] In the embodiments disclosed in this invention, the indexing device may further include a guiding mechanism 400. The guiding mechanism 400 may include a slider 420 and a guide rail 410. The slider 420 is fixedly mounted on the base plate 100. The driving end of the driving mechanism 200 is connected to one end of the guide rail 410, and the other end of the guide rail 410 is fixedly connected to the side of the transmission member 600 away from the turntable 500. The slider 420 and the guide rail 410 form a sliding pair, which allows the transmission member 600 to be slidably connected to the base plate 100 and also provides linear guidance for the reciprocating motion of the transmission member 600. The guide rail 410 may be a pre-made linear guide or a manufactured linear slide rail, etc.

[0044] Furthermore, the number of sliders 420 can be multiple, and they can be distributed along the linear motion trajectory and / or trajectory extension line of the transmission component 600. For example... Figure 2 As shown, two sliders 420 are provided on the substrate 100 to improve the stability of the support and guidance of the transmission member 600.

[0045] Furthermore, the guide rail 410 and the drive mechanism 200 can be connected through a floating joint 300 to improve the smoothness and stability of the linear reciprocating motion of the guide rail 410.

[0046] In one optional embodiment of the present invention, unlike the embodiments described above, the guide rail can be fixed to the substrate, and several sliders can be fixed to the side of the transmission component away from the turntable. The transmission component can be connected to the output end of the drive mechanism via connecting rods, joints, or other connecting parts, or it can be directly connected to the output end of the drive mechanism. The sliders and the guide rail form a sliding pair, which allows the transmission component to be slidably connected to the substrate while also providing linear guidance for the reciprocating motion of the transmission component. The remaining structure can be the same as in the embodiments described above, and will not be repeated in this embodiment.

[0047] In the embodiments disclosed in this invention, the turntable 500 may be provided with a mounting hole, and a screw 520 is fixedly connected to one side of the cam follower 510. The end of the screw 520 away from the cam follower 510 passes through the mounting hole and is fastened by a nut 530, so that the cam follower 510 is mounted on the turntable 500.

[0048] In a preferred embodiment of the present invention, the number of cam follower 510 can be 5 to 19, with an optimal number of 7 to 13.

[0049] In the embodiments disclosed in this invention, a limiting structure (not shown in the figure) can be provided on the side of the turntable 500 away from the transmission member 600 to restrict the movement of the turntable 500 other than its rotational movement around its axis. Of course, this limiting structure can also be provided in other positions, as long as it restricts other degrees of freedom of the turntable 500. This embodiment of the invention does not impose specific limitations on this.

[0050] In another optional embodiment disclosed in this invention, such as Figure 7 As shown, unlike any of the above embodiments, the tilt direction of the second surface 620 can be opposite to that of any of the above embodiments. During the cyclic operation of the transmission member 600, the turntable 500 rotates intermittently counterclockwise. When the transmission member 600 moves from the first position to the second position or from the second position to the first position, the turntable 500 rotates counterclockwise; when the transmission member 600 is in the first position or the second position, the turntable 500 is locked and stops rotating. The remaining structure can be the same as the above embodiments, and will not be described again in this embodiment.

[0051] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A dividing device, comprising a substrate and a driving mechanism disposed at one end of the substrate, characterized in that, The indexing device further includes: a turntable and a transmission component slidably connected to the base plate, wherein the driving mechanism drives the transmission component to reciprocate linearly between a first position and a second position; The turntable is located on the side of the transmission member away from the base plate. Multiple cam followers are evenly spaced around the turntable on the side facing the transmission member. The transmission member is located between the cam followers to drive the turntable to rotate. When the transmission component is in the first position and the second position, the transmission component is locked between two adjacent cam followers to limit the rotation of the turntable; The working surface of the transmission component includes two centrally symmetrical first surfaces and two centrally symmetrical second surfaces. The first surfaces are parallel to the direction of movement of the transmission component, and the included angle between the first surfaces and the second surfaces is less than or greater than 90°. The number of cam followers is odd.

2. The indexing device according to claim 1, characterized in that, The second surface is an inclined surface and / or a curved surface.

3. The indexing device according to claim 1, characterized in that, The first surface and the second surface transition smoothly.

4. The indexing device according to claim 1, characterized in that, It also includes a guiding mechanism, which includes a slider and a guide rail. The slider is disposed on the driving side of the driving mechanism and fixed on the base plate. One end of the guide rail is connected to the driving mechanism and the other end is connected to the transmission component. The slider and the guide rail form a sliding pair.

5. The indexing device according to claim 4, characterized in that, The number of sliders is multiple.

6. The indexing device according to claim 4, characterized in that, The guide rail is connected to the drive mechanism via a floating joint.

7. The indexing device according to claim 1, characterized in that, The turntable is provided with a mounting hole, and a screw is connected to one side of the cam follower. The end of the screw away from the cam follower passes through the mounting hole and is fastened by a nut.

8. The indexing device according to any one of claims 1-7, characterized in that, The number of cam followers is 5 to 19.

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