Cam follower
By designing a cam-driven device with a bracket, active mechanism, and passive mechanism, the problem of insufficient spring force during high-speed or high-acceleration rotation is solved, ensuring motion accuracy and reducing noise, and achieving stable operation of the cam and the passive mechanism.
Patent Information
- Application Number
- CN202520211327.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-11
AI Technical Summary
In existing cam follower mechanisms, insufficient spring force causes the cam and roller to disengage when rotating at high speed or high acceleration, resulting in reduced motion accuracy and noise problems.
A cam follower device is designed, including a bracket, an active mechanism, and a follower mechanism. The active mechanism consists of a driving member and a cam. The cam is rotatably mounted on the bracket, and the cam's rotation axis is set along a first direction. The driving member drives the cam to rotate. The follower mechanism includes a follower part, a first abutting member, and a second abutting member. The first abutting member and the second abutting member are spaced apart from each other along a second direction and abut against the peripheral wall of the cam to ensure that they do not disengage during high-speed or high-acceleration rotation.
It effectively ensures the motion accuracy of the driven part, reduces working noise, and avoids the phenomenon of the cam disengaging from the driven mechanism.
Smart Images
Figure CN223825541U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to semiconductor equipment technical field especially relates to cam follower device. BACKGROUND
[0002] Cam follower device can transform rotary motion into linear motion. Therefore, cam follower device is widely used in light industry, textile, food, transportation, mechanical transmission and chip manufacturing and other fields.
[0003] The existing cam follower device usually includes rotary motor, cam, spring and roller and driven part, motor and guide mechanism are fixed base, cam and roller contact, driven part rotates with roller, spring one end is fixed on rotary motor, the other end is fixed on driven part, spring applies certain contact pressure to cam and roller, its lifting process is driven by rotary motor cam positive rotation, the steep surface of cam will be driven by roller along the sliding direction of driven part and driven part is lifted, in the process of falling, rotary motor drives cam reverse rotation, the contact pressure of spring will pull down driven part.
[0004] However, in the process of high speed or high acceleration rotation of cam, spring force is not enough, which leads to the separation of cam and roller, thereby generating motion precision reduction and noise problem.
[0005] Therefore, cam follower device is needed to solve the above problems. UTILITY MODEL CONTENTS
[0006] The utility model aims at providing cam follower device to solve the problem of insufficient spring force in the process of high speed or high acceleration rotation of cam in the related art, which leads to the separation of cam and roller, thereby generating motion precision reduction and noise problem.
[0007] The utility model provides cam follower device, the cam follower device includes:
[0008] Supporting frame;
[0009] Driving mechanism, including driving piece and cam, the cam rotation is arranged in the supporting frame, the rotation axis of cam is arranged along the first direction, the driving piece drives the rotation of cam;
[0010] Driven mechanism, including driven part, first abutment piece and second abutment piece, the driven part is slidably connected with the supporting frame along the second direction, the first abutment piece and the second abutment piece are spaced apart and arranged on the driven part along the second direction, the cam is located between the first abutment piece and the second abutment piece, and the first abutment piece and the second abutment piece are in abutment with the peripheral wall of the cam along the second direction;
[0011] The first direction and the second direction are perpendicular.
[0012] As a preferred technical solution of the cam follower device, the follower part includes a first limiting seat, a second limiting seat and an elastic plate. One end of the second limiting seat along a third direction is fixedly connected to one end of the first limiting seat along the third direction through the elastic plate. The first abutting member is disposed on the first limiting seat, the second abutting member is disposed on the second limiting seat, and the elastic plate is used to make the other end of the second limiting seat along the third direction have a tendency to move closer to the other end of the first limiting seat along the third direction.
[0013] The first direction, the second direction, and the third direction are perpendicular to each other.
[0014] As a preferred technical solution of the cam follower device, the follower part further includes an elastic component, which has a tendency to move the other end of the second limiting seat along the third direction toward the other end of the first limiting seat along the third direction.
[0015] As a preferred technical solution for the cam follower device, the elastic component includes a spring and an adjusting bolt. The adjusting bolt passes through the other end of the second limiting seat along the third direction and is screwed to the other end of the first limiting seat along the third direction. The spring passes through the adjusting bolt and is located between the screw head of the adjusting bolt and the second limiting seat. The adjusting bolt is in sliding engagement with the second limiting seat.
[0016] As a preferred technical solution for the cam follower device, the elastic component further includes an adjusting nut, which is screwed to the adjusting bolt and located between the first limiting seat and the second limiting seat.
[0017] As a preferred technical solution for the cam follower device, the first limiting seat is provided with a first limiting protrusion at one end along the third direction, and the second limiting seat is provided with a second limiting protrusion at one end along the third direction. The first limiting protrusion and the second limiting protrusion respectively abut against one side wall of the elastic plate along the first direction.
[0018] As a preferred technical solution for the cam follower device, the follower part further includes a sliding component, which is fixedly connected to the first limiting seat and slidably engaged with the bracket along the second direction.
[0019] As a preferred technical solution for the cam follower device, the sliding assembly includes a connecting plate and two sliding plates. The two sliding plates are fixedly disposed at both ends of the connecting plate along the third direction. The two sliding plates simultaneously slide in cooperation with the bracket. The connecting plate is fixedly connected to the first limiting seat.
[0020] As a preferred technical solution for the cam follower device, the first abutting member is a rolling element, the first abutting member is rotatably engaged with the follower, and the rotating shaft of the first abutting member is arranged along the first direction;
[0021] The second abutment is a rolling element, and the second abutment is rotatably engaged with the driven part. The axis of rotation of the second abutment is arranged along the first direction.
[0022] As a preferred technical solution for the cam follower device, the cam is a symmetrical linear cam.
[0023] The beneficial effects of this utility model are as follows:
[0024] This utility model provides a cam-driven device, which includes a bracket, a driving mechanism, and a driven mechanism. The driving mechanism includes a driving member and a cam. The cam is rotatably mounted on the bracket, and the cam's axis of rotation is arranged along a first direction. The driving member drives the cam to rotate. The driven mechanism includes a driven part, a first abutment member, and a second abutment member. The driven part is slidably engaged with the bracket along a second direction. The first abutment member and the second abutment member are spaced apart on the driven part along the second direction. The cam is located between the first abutment member and the second abutment member, and the first and second abutment members abut against the peripheral wall of the cam along the second direction. The first and second directions are perpendicular. When the cam-driven device is working, the driving member drives the cam to rotate around the axis of rotation in the first direction. Since the first and second abutment members are spaced apart on both sides of the cam along the second direction and abut against the peripheral wall of the cam along the second direction, the cam drives the first and second abutment members to move along the second direction during the rotation of the cam. Since both the first and second abutment members are mounted on the driven part, they further drive the driven part to move along the second direction. When the cam rotates at high speed or high acceleration, the first and second abutting parts clamp the cam along the second direction, so the cam will not disengage from the driven mechanism, thus ensuring the motion accuracy of the driven part and reducing working noise. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the cam follower device in the embodiments of this utility model. Figure 1 ;
[0026] Figure 2 This is a schematic diagram of the cam follower device in the embodiments of this utility model. Figure 2 ;
[0027] Figure 3 This is a schematic diagram of the driven part in an embodiment of the present utility model.
[0028] In the picture:
[0029] Z, first direction; X, second direction; Y, third direction;
[0030] 1. Bracket;
[0031] 2. Active mechanism; 21. Driving component; 22. Cam;
[0032] 3. Driven mechanism; 311. First limiting seat; 3111. First limiting protrusion; 3112. First limiting plate; 3113. Second limiting plate; 312. Second limiting seat; 3121. Second limiting protrusion; 313. Elastic plate; 314. Elastic component; 3141. Spring; 3142. Adjusting bolt; 3143. Adjusting nut; 315. Sliding component; 3151. Connecting plate; 3152. Sliding plate; 32. First abutment; 33. Second abutment. Detailed Implementation
[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0037] like Figures 1-3 As shown, this embodiment provides a cam follower device, which includes a bracket 1, an active mechanism 2, and a follower mechanism 3. The active mechanism 2 includes a drive member 21 and a cam 22. The cam 22 is rotatably mounted on the bracket 1, and the axis of rotation of the cam 22 is arranged along the first direction Z. The drive member 21 drives the cam 22 to rotate. The follower mechanism 3 includes a follower part, a first abutment member 32, and a second abutment member 33. The follower part slides with the bracket 1 along the second direction X. The first abutment member 32 and the second abutment member 33 are spaced apart from each other along the second direction X. The cam 22 is located between the first abutment member 32 and the second abutment member 33, and the first abutment member 32 and the second abutment member 33 abut against the peripheral wall of the cam 22 along the second direction X. The first direction Z and the second direction X are perpendicular. When the cam follower device is working, the drive member 21 drives the cam 22 to rotate around the axis of rotation in the first direction Z. Since the first abutment member 32 and the second abutment member 33 are spaced apart on both sides of the cam 22 along the second direction X, and the first abutment member 32 and the second abutment member 33 abut against the peripheral wall of the cam 22 along the second direction X, the cam 22 will drive the first abutment member 32 and the second abutment member 33 to move along the second direction X during the rotation of the cam 22. Since the first abutment member 32 and the second abutment member 33 are both provided on the follower, the follower is driven to move along the second direction X. When the cam 22 rotates at high speed or high acceleration, since the first abutment member 32 and the second abutment member 33 clamp the cam 22 along the second direction X, the cam 22 will not disengage from the follower mechanism 3, thus ensuring the motion accuracy of the follower and reducing working noise.
[0038] Optionally, the driven part includes a first limiting seat 311, a second limiting seat 312, and an elastic plate 313. One end of the second limiting seat 312 along the third direction Y is fixedly connected to one end of the first limiting seat 311 along the third direction Y through the elastic plate 313. A first abutting member 32 is disposed on the first limiting seat 311, and a second abutting member 33 is disposed on the second limiting seat 312. The elastic plate 313 is used to make the other end of the second limiting seat 312 along the third direction Y have a tendency to move closer to the other end of the first limiting seat 311 along the third direction Y. The first direction Z, the second direction X, and the third direction Y are perpendicular to each other. In this embodiment, the first limiting seat 311 includes an L-shaped first limiting plate 3112 and a second limiting plate 3113. The first limiting plate 3112 is arranged along a third direction Y. One end of the first limiting plate 3112 along the third direction Y is fixedly connected to the second limiting plate 3113. One end of the elastic plate 313 is fixedly connected to the end face of the second limiting plate 3113 away from the first limiting plate 3112. One end of the second limiting seat 312 along the third direction Y is fixedly connected to the other end of the elastic plate 313. The first limiting plate 3112 and the second limiting seat 312 are spaced apart along the second direction X. Since the first abutting member 32 is disposed on the first limiting plate 3112 and the second abutting member 33 is disposed on the second limiting seat 312, the elastic plate 313 causes the other end of the second limiting seat 312 along the third direction Y to tend to move closer to the other end of the first limiting plate 3112 along the third direction Y, so that the first abutting member 32 and the second abutting member 33 clamp the cam 22 along the second direction X. Specifically, the elastic plate 313 can absorb the differences caused by the machining accuracy of the cam 22 and avoid gaps between the first abutting member 32 and / or the second abutting member 33 and the cam 22 respectively.
[0039] Optionally, the driven part further includes an elastic component 314, which has a tendency to move the second limiting seat 312 toward the other end of the third direction Y toward the first limiting seat 311 along the third direction Y. In this embodiment, when the cam 22 rotates at high speed or starts with high acceleration, in order to avoid the elastic plate 313 acting on the first abutment 32 and the second abutment 33 with too small a clamping force on the cam 22 along the second direction X, the elastic component 314 is added to increase the clamping force of the first abutment 32 and the second abutment 33 on the cam 22 along the second direction X, and to avoid problems such as shaking and movement error in the driven mechanism 3.
[0040] Optionally, the elastic component 314 includes a spring 3141 and an adjusting bolt 3142. The adjusting bolt 3142 passes through the other end of the second limiting seat 312 in the third direction Y and is screwed to the other end of the first limiting seat 311 in the third direction Y. The spring 3141 passes through the adjusting bolt 3142 and is located between the screw head of the adjusting bolt 3142 and the second limiting seat 312. The adjusting bolt 3142 is slidably engaged with the second limiting seat 312. In this embodiment, if the clamping force of the first abutment 32 and the second abutment 33 on the cam 22 along the second direction X is too large, it will easily lead to accelerated wear between the first abutment 32 and the second abutment 33 and the cam 22 respectively. To avoid this problem, it is necessary to keep the clamping force of the first abutment 32 and the second abutment 33 on the cam 22 along the second direction X within a reasonable range. Therefore, by rotating the adjusting bolt 3142, the minimum compression of the spring 3141 can be adjusted, thereby adjusting the clamping force of the first abutment 32 and the second abutment 33 on the cam 22 along the second direction X.
[0041] Optionally, the elastic component 314 further includes an adjusting nut 3143, which is screwed to the adjusting bolt 3142 and located between the first limiting seat 311 and the second limiting seat 312. In this embodiment, by adjusting the adjusting nut 3141, the adjusting bolt 3142 can be locked onto the first limiting seat 311 to prevent loosening during movement.
[0042] The elastic plate 313 has through holes at both ends. The fixing bolt passes through the through hole at one end of the elastic plate 313 and is fixed to the second limiting plate 3113 along the second direction X. The fixing bolt passes through the through hole at the other end of the elastic plate 313 and is fixed to the second limiting seat 312 along the second direction X. Since there is a gap between the through hole and the fixing bolt, there will be shaking between the elastic plate 313 and the fixing bolt, which will cause the relative position of the second abutment 33 and the cam 22 to change. To avoid this problem, optionally, the first limiting seat 311 is provided with a first limiting protrusion 3111 at one end along the third direction Y, and the second limiting seat 312 is provided with a second limiting protrusion 3121 at one end along the third direction Y. The first limiting protrusion 3111 and the second limiting protrusion 3121 abut against one side wall of the elastic plate 313 along the first direction Z, respectively. In this embodiment, the first limiting protrusion 3111 and the second limiting protrusion 3121 can restrict the elastic plate 313 from abutting against the fixing bolt along the first direction Z, thereby ensuring that the relative position of the second abutting member 33 and the cam 22 remains unchanged.
[0043] Optionally, the driven part further includes a sliding assembly 315, which is fixedly connected to the first limiting seat 311 and slidably engaged with the bracket 1 along the second direction X. In this embodiment, the cam 22 drives the first limiting seat 311 to slide along the second direction X, thereby causing the sliding assembly 315 to slide synchronously with the first limiting seat 311. Optionally, an actuating element, such as a suction cup or ejector pin of a chip sorting machine, can be provided on the sliding assembly 315.
[0044] Optionally, the sliding assembly 315 includes a connecting plate 3151 and two sliding plates 3152. The two sliding plates 3152 are fixed to both ends of the connecting plate 3151 along the third direction Y. Both sliding plates 3152 simultaneously slide in engagement with the bracket 1, and the connecting plate 3151 is fixedly connected to the first limiting seat 311. In this embodiment, the simultaneous sliding engagement of the two sliding plates 3152 with the bracket 1 improves the stability of the sliding assembly 315 relative to the bracket 1. Specifically, the two sliding plates 3152 slide in engagement with the two side walls of the bracket 1 along the third direction Y.
[0045] Optionally, the bracket 1 is provided with two slide rails extending in the second direction X on its two side walls along the third direction Y, and the two sliding plates 3152 are respectively provided with slide grooves that slide in cooperation with the two slide rails.
[0046] Optionally, the first abutment 32 is a rolling element, which rotatably engages with the driven part, and the axis of rotation of the first abutment 32 is arranged along the first direction Z; the second abutment 33 is a rolling element, which rotatably engages with the driven part, and the axis of rotation of the second abutment 33 is arranged along the first direction Z. In this embodiment, both the first abutment 32 and the second abutment 33 are set as rolling elements, which can reduce the wear between the first abutment 32 and the second abutment 33 and the cam 22 respectively. Optionally, the rolling element is a bearing or a roller.
[0047] Optionally, cam 22 is a symmetrical linear cam. In this embodiment, this arrangement allows the follower mechanism 3 to move linearly relative to the support 1 along the second direction X. In other embodiments, cam 22 may also be circular.
[0048] Optionally, the cam follower can be installed in semiconductor equipment, such as a chip sorter.
[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A cam-driven device, characterized in that, include: Frame (1); The active mechanism (2) includes a drive member (21) and a cam (22), the cam (22) being rotatably mounted on the bracket (1), the axis of rotation of the cam (22) being arranged along a first direction (Z), and the drive member (21) driving the cam (22) to rotate; The driven mechanism (3) includes a driven part, a first abutting member (32) and a second abutting member (33). The driven part is slidably engaged with the bracket (1) along the second direction (X). The first abutting member (32) and the second abutting member (33) are spaced apart on the driven part along the second direction (X). The cam (22) is located between the first abutting member (32) and the second abutting member (33), and the first abutting member (32) and the second abutting member (33) abut against the peripheral wall of the cam (22) along the second direction (X). The first direction (Z) and the second direction (X) are perpendicular.
2. The cam follower device according to claim 1, characterized in that, The driven part includes a first limiting seat (311), a second limiting seat (312), and an elastic plate (313). One end of the second limiting seat (312) along the third direction (Y) is fixedly connected to one end of the first limiting seat (311) along the third direction (Y) through the elastic plate (313). The first abutting member (32) is disposed on the first limiting seat (311), and the second abutting member (33) is disposed on the second limiting seat (312). The elastic plate (313) is used to make the other end of the second limiting seat (312) along the third direction (Y) have a tendency to move closer to the other end of the first limiting seat (311) along the third direction (Y). The first direction (Z), the second direction (X), and the third direction (Y) are perpendicular to each other.
3. The cam follower device according to claim 2, characterized in that, The driven part further includes an elastic component (314) having a tendency to move the second limiting seat (312) toward the other end of the third direction (Y) toward the other end of the first limiting seat (311) along the third direction (Y).
4. The cam follower device according to claim 3, characterized in that, The elastic component (314) includes a spring (3141) and an adjusting bolt (3142). The adjusting bolt (3142) passes through the second limiting seat (312) at the other end along the third direction (Y) and is screwed to the first limiting seat (311) at the other end along the third direction (Y). The spring (3141) passes through the adjusting bolt (3142) and is located between the screw head of the adjusting bolt (3142) and the second limiting seat (312). The adjusting bolt (3142) is slidably engaged with the second limiting seat (312).
5. The cam follower device according to claim 4, characterized in that, The elastic component (314) further includes an adjusting nut (3143), which is screwed to the adjusting bolt (3142) and located between the first limiting seat (311) and the second limiting seat (312).
6. The cam follower device according to claim 2, characterized in that, The first limiting seat (311) is provided with a first limiting protrusion (3111) at one end along the third direction (Y), and the second limiting seat (312) is provided with a second limiting protrusion (3121) at one end along the third direction (Y). The first limiting protrusion (3111) and the second limiting protrusion (3121) respectively abut against one side wall of the elastic plate (313) along the first direction (Z).
7. The cam follower device according to claim 2, characterized in that, The driven part further includes a sliding assembly (315), which is fixedly connected to the first limiting seat (311) and slides along the second direction (X) with the bracket (1).
8. The cam follower device according to claim 7, characterized in that, The sliding assembly (315) includes a connecting plate (3151) and two sliding plates (3152). The two sliding plates (3152) are fixed at both ends of the connecting plate (3151) along the third direction (Y). The two sliding plates (3152) simultaneously slide with the bracket (1). The connecting plate (3151) is fixedly connected to the first limiting seat (311).
9. The cam follower device according to any one of claims 1-8, characterized in that, The first abutting member (32) is a rolling element, and the first abutting member (32) is rotatably engaged with the driven part. The axis of rotation of the first abutting member (32) is arranged along the first direction (Z). The second abutment (33) is a rolling element, and the second abutment (33) is rotatably engaged with the driven part. The axis of rotation of the second abutment (33) is arranged along the first direction (Z).
10. The cam follower according to any one of claims 1-8, characterized in that, The cam (22) is a symmetrical linear cam (22).