Four-axis cam rotary table

Abstract

The utility model discloses a four-axis cam rotary table. Comprising a mounting box, a motor fixed to one side of the mounting box, a rotating shaft rotationally arranged in the mounting box in the first direction, and an integrated cambered cam shaft rotationally arranged in the mounting box in the second direction and driving the rotating shaft to rotate. The transmission assembly is arranged between the integrated cambered cam shaft and the motor; the brake assembly is arranged at the tail end of the rotating shaft; the brake assembly comprises a static friction plate detachably connected with the mounting box, a dynamic friction plate detachably connected with the rotating shaft and located below the static friction plate, and a brake end cover detachably connected with the mounting box and arranged at the lower end of the dynamic friction plate. The valve core is arranged in the brake end cover and can float up and down; and the spring plunger is movably arranged in the mounting box. The four-axis cam rotary table is simple in structure and convenient to mount and dismount, adopts a plurality of brake pads, and provides larger braking force by taking hydraulic oil as power.

Description

Technical Field

[0001] This utility model relates to the field of automatic processing equipment technology, specifically to a four-axis cam turntable. Background Technology

[0002] CNC machine tools are short for numerical control machine tools. They are automated machine tools equipped with a program control system. This control system can logically process programs with control codes or other symbolic instructions, decode them, represent them with coded numbers, and input them into the CNC device through an information carrier. During use, they are usually used in conjunction with hydraulic clamping devices to fix and clamp the workpiece, thereby facilitating the processing of the equipment. The most widely used in the current mainstream market is the four-axis rotary table clamping device.

[0003] Existing four-axis rotary tables have a relatively complex structure, and the installation and disassembly procedures are quite cumbersome. Furthermore, the existing rotary table braking structure uses a single-plate brake, which has insufficient braking force and is difficult to apply to heavy-duty cutting operations on CNC machine tools. Utility Model Content

[0004] To solve at least one technical problem of the prior art, this utility model provides a four-axis cam turntable.

[0005] To achieve the above-mentioned utility model objectives, the technical solution adopted by this utility model is as follows: a four-axis cam turntable, comprising a mounting box, a motor fixed to one side of the mounting box, a rotating shaft rotatably disposed in the mounting box along a first direction, an integral arc-shaped camshaft rotatably disposed in the mounting box along a second direction and driving the rotating shaft to rotate, a transmission assembly disposed between the integral arc-shaped camshaft and the motor, and a brake assembly disposed at the end of the rotating shaft. The brake assembly includes a static friction plate detachably connected to the mounting box, a dynamic friction plate detachably connected to the rotating shaft and located below the static friction plate, a brake end cover detachably connected to the mounting box and disposed at the lower end of the dynamic friction plate, a valve core disposed in the brake end cover and capable of floating up and down, and a spring plunger movably disposed in the mounting box. The second direction is parallel to the axial direction of the motor output shaft, and the first direction is perpendicular to the second direction.

[0006] In some embodiments, the brake end cap has a groove facing the end face of the dynamic friction plate, the valve core is disposed in the groove, and the brake end cap is also provided with an oil inlet communicating with the groove, through which hydraulic oil enters the groove to push the valve core.

[0007] In some embodiments, a second mounting portion extending towards the center is provided at the lower end of the mounting box. The lower end surface of the second mounting portion is flat, and the static friction plate and the brake end cap are both fixed to the lower end surface of the second mounting portion by screws.

[0008] In some embodiments, the second mounting portion has a mounting hole located above the valve core, and the spring plunger is disposed in the mounting hole, with one end of the spring plunger moving through the static friction plate and contacting the valve core.

[0009] In some embodiments, the static friction pad and the dynamic friction pad partially overlap, and there is a gap between the overlapping portions.

[0010] In some embodiments, both the static friction plate and the dynamic friction plate are annular plates made of spring steel.

[0011] In some embodiments, the rotating shaft is provided with a plurality of roller bearings spaced circumferentially, and the plurality of roller bearings mesh with the integral arc-shaped camshaft.

[0012] In some embodiments, the transmission assembly includes a drive gear fixed to the output shaft of the motor and a driven gear fixed to the integral arc-shaped camshaft, the drive gear meshing with the driven gear.

[0013] In some embodiments, the mounting box has two mounting plates spaced apart along a second direction, the mounting plates having through holes, and the two ends of the integral arc-shaped camshaft are respectively configured in the two through holes via bearings.

[0014] In some embodiments, a proximity switch is mounted on the mounting box, and a sensing protrusion is provided on the rotating shaft. The proximity switch faces and cooperates with the sensing protrusion to detect the rotational speed of the rotating shaft.

[0015] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0016] The four-axis cam rotary table of this invention has a simple structure, is easy to install and disassemble, and uses multiple brake pads to provide greater braking force with hydraulic oil, which facilitates the locking and positioning of the rotary table and heavy cutting work of CNC machine tools. Attached Figure Description

[0017] Figure 1 This is a perspective view of the four-axis cam rotary table of this utility model;

[0018] Figure 2 A cross-sectional view of the four-axis cam rotary table of this utility model. Figure 1 ;

[0019] Figure 3 A cross-sectional view of the four-axis cam rotary table of this utility model. Figure 2 . Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0023] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0024] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Reference Figures 1 to 3 This utility model provides a four-axis cam turntable, including a mounting box 1, a motor 2 fixed to one side of the mounting box 1, a rotating shaft 6 rotatably disposed in the mounting box 1 along a first direction, an integrated arc-shaped camshaft 5 rotatably disposed in the mounting box 1 along a second direction and driving the rotating shaft 6 to rotate, a transmission assembly disposed between the integrated arc-shaped camshaft 5 and the motor 2, and a brake assembly 9 disposed at the end of the rotating shaft 6. The brake assembly 9 includes a static friction plate 92 detachably connected to the mounting box 1, a dynamic friction plate 91 detachably connected to the rotating shaft 6 and located below the static friction plate 92, a brake end cover 94 detachably connected to the mounting box 1 and disposed at the lower end of the dynamic friction plate 91, a valve core 95 disposed in the brake end cover 94 and capable of floating up and down, and a spring plunger 93 movably disposed in the mounting box 1. The second direction is parallel to the axial direction of the output shaft of the motor 2, and the first direction is perpendicular to the second direction.

[0027] In some embodiments, the brake end cap 94 has a groove on the end face facing the dynamic friction plate 91, the valve core 95 is disposed in the groove, and the brake end cap 94 is also provided with an oil inlet communicating with the groove, through which hydraulic oil enters the groove to push the valve core 95.

[0028] Furthermore, a second mounting portion 102 extending towards the center is provided at the lower end of the mounting box 1. The lower end surface of the second mounting portion 102 is flat, and the static friction plate 92 and the brake end cap 94 are both fixed to the lower end surface of the second mounting portion 102 by screws.

[0029] Furthermore, the second mounting part 102 has a mounting hole located above the valve core 95. The spring plunger 93 is disposed in the mounting hole, and one end of the spring plunger 93 moves through the static friction plate 92 to contact the valve core 95. The spring plunger 93 is elastic.

[0030] Furthermore, the static friction plate 92 and the dynamic friction plate 91 partially overlap, and there is a gap between the overlapping parts.

[0031] Furthermore, both the static friction plate 92 and the dynamic friction plate 91 are annular plates made of spring steel.

[0032] When braking is needed, hydraulic oil enters from the inlet into the groove, pushing the valve core 95 upward. This, in turn, pushes the moving friction plate 91 upward, allowing it to contact the stationary friction plate 92 above it through the gap, thus creating a braking effect on the rotating shaft 6. During the upward movement of the valve core 95, the spring plunger 93 is compressed. When the hydraulic oil supply stops, the valve core 95 is pushed back to its original position by the spring force of the spring plunger 93, and the moving friction plate 91 returns to its original position. The moving friction plate 91 no longer contacts the stationary friction plate 92, and the turntable rotates.

[0033] Furthermore, a seal is provided between the second mounting part 102 and the rotating shaft 6, and the seal is positioned above the dynamic friction plate 91.

[0034] In some embodiments, the top of the mounting box 1 is provided with a mounting through hole, and the mounting box 1 is provided with a first mounting part 101 extending downward at the lower end of the mounting through hole. The upper end of the rotating shaft 6 is disposed in the first mounting part 101 and the mounting through hole through a turntable bearing 8.

[0035] Furthermore, a skeleton oil seal 10 is provided between the rotating shaft 6 and the mounting through hole.

[0036] In some embodiments, the rotating shaft 6 is provided with a plurality of roller bearings 7 spaced apart circumferentially, and the plurality of roller bearings 7 mesh with the integral arc-shaped camshaft 5.

[0037] In some embodiments, the transmission assembly includes a drive gear 3 fixed on the output shaft of the motor 2 and a driven gear 4 fixed on an integral arc-shaped camshaft 5, wherein the drive gear 3 meshes with the driven gear 4.

[0038] In some embodiments, the transmission assembly includes a first pulley fixed to the output shaft of the motor 2, a second pulley fixed to the integral arc-shaped camshaft 5, and a transmission belt sleeved on the first and second pulleys.

[0039] In some embodiments, the mounting box 1 has two mounting plates 100 spaced apart along a second direction. The mounting plates 100 are provided with through holes, and the two ends of the integral arc-shaped camshaft 5 are respectively disposed in the two through holes through bearings 50.

[0040] In some embodiments, a proximity switch 21 is installed on the mounting box 1, and a sensing protrusion is provided on the rotating shaft 6. The proximity switch 21 faces the sensing protrusion and cooperates with the sensing protrusion to detect the rotational speed of the rotating shaft 6.

[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to the above embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A four-axis cam turret, characterized by, The system includes a mounting box (1), a motor (2) fixed to one side of the mounting box (1), a rotating shaft (6) rotatably disposed in the mounting box (1) in a first direction, an integral arc-shaped camshaft (5) rotatably disposed in the mounting box (1) in a second direction and driving the rotating shaft (6) to rotate, a transmission assembly disposed between the integral arc-shaped camshaft (5) and the motor (2), and a brake assembly (9) disposed at the end of the rotating shaft (6). The brake assembly (9) includes components detachably connected to the mounting box (1). The components include a static friction plate (92), a dynamic friction plate (91) detachably connected to the rotating shaft (6) and located below the static friction plate (92), a brake end cover (94) detachably connected to the mounting box (1) and disposed at the lower end of the dynamic friction plate (91), a valve core (95) disposed in the brake end cover (94) and capable of floating up and down, and a spring plunger (93) movably disposed in the mounting box (1), wherein the second direction is parallel to the axial direction of the output shaft of the motor (2), and the first direction is perpendicular to the second direction.

2. The four-axis cam turntable of claim 1, wherein, The brake end cap (94) has a groove on the end face facing the dynamic friction plate (91), the valve core (95) is disposed in the groove, and the brake end cap (94) is also provided with an oil inlet communicating with the groove. Hydraulic oil enters the groove through the oil inlet to push the valve core (95).

3. The four-axis cam turntable of claim 1, wherein, The lower end of the mounting box (1) is provided with a second mounting part (102) extending towards the center. The lower end surface of the second mounting part (102) is a plane. The static friction plate (92) and the brake end cap (94) are both fixed to the lower end surface of the second mounting part (102) by screws.

4. The four-axis cam rotary table as described in claim 3, characterized in that, The second mounting part (102) has a mounting hole located above the valve core (95). The spring plunger (93) is disposed in the mounting hole, and one end of the spring plunger (93) moves through the static friction plate (92) and contacts the valve core (95).

5. The four-axis cam rotary table as described in claim 1, characterized in that, The static friction plate (92) and the dynamic friction plate (91) partially overlap, and there is a gap between the overlapping parts.

6. The four-axis cam rotary table as described in claim 1, characterized in that, Both the static friction plate (92) and the dynamic friction plate (91) are annular plates made of spring steel.

7. The four-axis cam rotary table as described in claim 1, characterized in that, The rotating shaft (6) is provided with a plurality of roller bearing components (7) spaced apart along the circumference, and the plurality of roller bearing components (7) mesh with the integral arc-shaped camshaft (5).

8. The four-axis cam rotary table as described in claim 1, characterized in that, The transmission assembly includes a drive gear (3) fixed on the output shaft of the motor (2) and a driven gear (4) fixed on the integral arc-shaped camshaft (5), wherein the drive gear (3) meshes with the driven gear (4).

9. The four-axis cam rotary table as described in claim 1, characterized in that, The mounting box (1) has two mounting plates (100) spaced apart along the second direction. The mounting plates (100) are provided with through holes. The two ends of the integral arc-shaped camshaft (5) are respectively configured in the two through holes through bearings (50).

10. The four-axis cam rotary table as described in any one of claims 1 to 9, characterized in that, A proximity switch (21) is installed on the mounting box (1), and a sensing protrusion is provided on the rotating shaft (6). The proximity switch (21) faces the sensing protrusion and cooperates with the sensing protrusion to detect the rotational speed of the rotating shaft (6).

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