Quick-change roller cam four-axis mechanism and numerical control rotary table thereof

Abstract

The utility model discloses a quick-change roller cam four-axis mechanism and a numerical control rotary table thereof, and relates to the field of numerical control rotary tables. The quick-change type roller cam four-axis mechanism and the numerical control rotary table thereof comprise a driven roller piece and a cam, a quick-release type fixing assembly is installed at the side end of the cam and comprises a fixing disc, a rotary connecting base and a movable connecting base, one end of the cam is arranged in the fixing disc, and the other end of the cam is movably clamped in the rotary connecting base. The movable connecting base is rotationally connected into the fixed disc, and one end of the cam abuts against the movable connecting base. According to the quick-change roller cam four-axis mechanism and the numerical control rotary table thereof, by arranging the quick-release fixing assembly, the cam is more convenient to replace, the sliding quick-release rod is driven by the power air cylinder, the cam can be quickly released and directly taken down on the premise that the cam can be clamped, and repositioning is not needed when the cam is clamped again.

Description

Technical Field

[0001] This utility model relates to the field of CNC rotary table technology, specifically to a quick-change roller cam four-axis mechanism and its CNC rotary table. Background Technology

[0002] The roller cam within a CNC rotary table is the core power transmission component, primarily used to achieve indexing positioning and circumferential feed motion. Its working principle involves continuous contact between the cam profile curve and the driven roller, converting the continuous rotational motion of the input shaft into intermittent rotation or precise angular displacement of the output shaft. It typically works in conjunction with a gear reduction mechanism to adjust the speed ratio, and utilizes the cam curve design to control the motion law, such as employing a modified sine curve or trapezoidal curve to reduce impact. This structure transmits torque through the rolling friction between the cam disc and the roller, and with preload to eliminate transmission backlash, it ensures the rotary table possesses high repeatability, high rigidity, and low friction characteristics, making it suitable for the indexing rotation and dynamic response requirements in multi-process composite machining.

[0003] Because the transmission of a roller cam relies on the rolling friction between the cam disc and the roller to transmit torque, it is prone to damage and grinding off under heavy loads or insufficient lubrication. This results in discrepancies between the two, reducing rotational accuracy and affecting machining accuracy and product quality. Such situations require frequent machine downtime for maintenance. However, since the cam is not easily removed for maintenance or replacement, downtime is long, impacting machining efficiency. To address these issues, this invention provides a quick-change roller cam four-axis mechanism and its CNC rotary table to solve the aforementioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a quick-change roller cam four-axis mechanism and its CNC rotary table. This solves the problem that the transmission of the roller cam relies on the rolling friction between the cam disc and the roller to transmit torque. Under heavy loads or insufficient lubrication, this friction can easily cause damage and grinding off of the cam, resulting in discrepancies between the two, reduced rotational accuracy, and impacting machining accuracy and product quality. This situation necessitates frequent machine downtime for maintenance. Furthermore, because the cam is not easily removed for maintenance or replacement, maintenance downtime is long, affecting machining efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick-change roller cam four-axis mechanism and its CNC rotary table, comprising a driven roller and a cam, wherein a quick-release fixing assembly is installed on the side end of the cam, the quick-release fixing assembly comprising a fixed plate, a rotating connecting seat and a movable connecting seat, one end of the cam being disposed in the fixed plate, the other end of the cam being movably engaged in the rotating connecting seat, the movable connecting seat being rotatably connected in the fixed plate, and one end of the cam abutting against the movable connecting seat.

[0006] Preferably, a rotating bearing is provided inside the fixed disk, a rotating snap-fit ​​disc is fixedly connected to the back end of the rotating connecting seat, the rotating snap-fit ​​disc is rotatably connected inside the rotating bearing, the rotating bearing is used to allow the rotating connecting seat to be rotatably connected inside the fixed disk, and a snap-fit ​​post is fixedly connected inside the fixed disk, the snap-fit ​​post is used to snap a cam.

[0007] Preferably, the quick-release fixing assembly further includes a fixed long plate and a sliding quick-release rod. The fixing plate is fixedly connected to one end of the fixed long plate. A sliding groove is provided in the fixed long plate. The sliding quick-release rod is slidably connected in the sliding groove. The movable connecting seat is rotatably connected in the sliding quick-release rod.

[0008] Preferably, the movable connecting seat has a fixed connecting through hole for engaging the cam, the movable connecting seat has a sliding ring, the sliding quick-release rod has a sliding hole, and the sliding ring is rotatably connected in the sliding hole.

[0009] Preferably, the back end of the fixed long plate is provided with a fixed housing, and a power cylinder is installed inside the fixed housing. The sliding quick-release rod is fixedly connected to the power output end of the power cylinder.

[0010] Preferably, a rotating roller is rotatably connected inside the driven roller, and a drive shaft is fixedly connected to one end of the cam, with the connecting through hole abutting against the drive shaft.

[0011] Preferably, a CNC rotary table includes a quick-change roller cam four-axis mechanism.

[0012] This utility model discloses a quick-change roller cam four-axis mechanism and its CNC rotary table, which has the following beneficial effects: the quick-change roller cam four-axis mechanism and its CNC rotary table, by setting a quick-release fixing component, make the replacement of the cam more convenient. By driving the sliding quick-release rod with a power cylinder, the cam can be quickly released and directly removed while it can be clamped. It does not need to be repositioned when clamped again. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall front structure of this utility model;

[0015] Figure 2This is a schematic diagram of the overall exploded structure of this utility model;

[0016] Figure 3 This is an exploded view of the quick-release fixing component of this utility model;

[0017] Figure 4 This is a schematic diagram of the back structure of the quick-release fixing component of this utility model.

[0018] In the diagram: 1. Driven roller; 11. Rotating roller; 2. Cam; 21. Drive shaft; 3. Quick-release fixing assembly; 31. Fixed long plate; 311. Slide groove; 312. Fixed housing; 32. Fixed disc; 321. Rotating bearing; 33. Rotating connecting seat; 331. Rotating snap-fit ​​disc; 332. Snap-fit ​​post; 34. Moving connecting seat; 341. Connecting through hole; 342. Sliding ring; 35. Sliding quick-release rod; 351. Sliding hole; 36. Power cylinder. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] This application provides a quick-change roller cam four-axis mechanism and its CNC rotary table, which solves the problem that the transmission of roller cams relies on the rolling friction between the cam disc and the roller to transmit torque. Under heavy load or insufficient lubrication, the friction between the two can easily cause damage and grinding off, resulting in discrepancies between them, reduced rotational accuracy, and affecting machining accuracy and product quality. In this case, frequent machine downtime is required for maintenance. However, since the cam is not easy to remove for maintenance or replacement, the maintenance downtime is long, affecting machining efficiency.

[0021] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0022] This utility model discloses a quick-change roller cam four-axis mechanism and its CNC rotary table.

[0023] Example 1

[0024] According to the appendix Figure 1-4As shown, the assembly includes a driven roller 1 and a cam 2. A quick-release fixing component 3 is installed on the side of the cam 2. The quick-release fixing component 3 includes a fixed plate 32, a rotating connecting seat 33, and a movable connecting seat 34. One end of the cam 2 is located in the fixed plate 32, and the other end of the cam 2 is movably engaged in the rotating connecting seat 33. The movable connecting seat 34 is rotatably connected in the fixed plate 32, and one end of the cam 2 abuts against the movable connecting seat 34. A rotating bearing 321 is provided in the fixed plate 32. A rotating locking plate 331 is fixedly connected to the back end of the rotating connecting seat 33. The rotating locking plate 331 is rotatably connected in the rotating bearing 321. The rotating bearing 321 is used to allow the rotating connecting seat 33 to be rotatably connected in the fixed plate 32. A locking post 332 is fixedly connected in the fixed plate 32. The locking post 332 is used to lock the cam 2. Through the arrangement of the fixed plate 32, the rotating connecting seat 33, and the movable connecting seat 34, the cam 2 can be quickly clamped without affecting its rotation.

[0025] The quick-release fixing assembly 3 also includes a fixed long plate 31 and a sliding quick-release rod 35. The fixed plate 32 is fixedly connected to one end of the fixed long plate 31. The fixed long plate 31 has a groove 311. The sliding quick-release rod 35 is slidably connected in the groove 311. The movable connecting seat 34 is rotatably connected in the sliding quick-release rod 35. The movable connecting seat 34 has a fixedly connected connecting through hole 341 for engaging the cam 2. The movable connecting seat 34 has a sliding ring 342. The sliding quick-release rod 35 has a sliding hole 351. The sliding ring 342 is rotatably connected in the sliding hole 351.

[0026] Example 2

[0027] According to the appendix Figure 1-4 As shown, a fixed housing 312 is provided at the back end of the fixed long plate 31. A power cylinder 36 is installed inside the fixed housing 312. A sliding quick-release rod 35 is fixedly connected to the power output end of the power cylinder 36. A rotating roller 11 is rotatably connected inside the driven roller 1. A drive shaft 21 is fixedly connected to one end of the cam 2. The connecting through hole 341 abuts against the drive shaft 21. The cam 2 is clamped and released by the power cylinder 36, making replacement and maintenance faster.

[0028] A CNC rotary table includes a quick-change roller cam four-axis mechanism.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A quick-change roller cam four-axis mechanism, comprising a driven roller (1) and a cam (2), characterized in that, The cam (2) is equipped with a quick-release fixing component (3) on its side, the quick-release fixing component (3) comprising: A fixed disk (32) is provided, with one end of the cam (2) disposed inside the fixed disk (32); Rotate the connecting seat (33), and the other end of the cam (2) is movably engaged in the rotating connecting seat (33); The movable connecting seat (34) is rotatably connected to the fixed disk (32), and one end of the cam (2) abuts against the movable connecting seat (34).

2. The quick-change roller cam four-axis mechanism according to claim 1, characterized in that: The fixed disk (32) is provided with a rotating bearing (321), and the rotating connecting seat (33) is fixedly connected to a rotating snap-fit ​​disk (331) at its back end. The rotating snap-fit ​​disk (331) is rotatably connected to the rotating bearing (321). The rotating bearing (321) is used to allow the rotating connecting seat (33) to be rotatably connected to the fixed disk (32). The fixed disk (32) is fixedly connected with a snap-fit ​​post (332), and the snap-fit ​​post (332) is used to snap-fit ​​the cam (2).

3. The quick-change roller cam four-axis mechanism according to claim 1, characterized in that: The quick-release fixing component (3) also includes: A fixed long plate (31) is fixedly connected to one end of the fixed long plate (31), and a sliding groove (311) is provided in the fixed long plate (31). The sliding quick-release rod (35) is slidably connected in the slide groove (311), and the movable connecting seat (34) is rotatably connected in the sliding quick-release rod (35).

4. The quick-change roller cam four-axis mechanism according to claim 3, characterized in that: The movable connecting seat (34) is fixedly connected to a connecting through hole (341), which is used to engage the cam (2). A sliding ring (342) is provided inside the movable connecting seat (34), and a sliding hole (351) is provided inside the sliding quick release rod (35). The sliding ring (342) is rotatably connected inside the sliding hole (351).

5. A quick-change roller cam four-axis mechanism according to claim 3, characterized in that: The fixed long plate (31) is provided with a fixed housing (312) at the back end. A power cylinder (36) is installed inside the fixed housing (312). The sliding quick release rod (35) is fixedly connected to the power output end of the power cylinder (36).

6. A quick-change roller cam four-axis mechanism according to claim 4, characterized in that: The driven roller (1) is rotatably connected to a rotating roller (11), and one end of the cam (2) is fixedly connected to a drive shaft (21). The connecting through hole (341) abuts against the drive shaft (21).

7. A CNC rotary table, comprising the quick-change roller cam four-axis mechanism as described in any one of claims 1-6.

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