Cam type double-exchange rotary table

Abstract

The utility model discloses a cam-type double-exchange rotary table, which comprises a rotary lifting mechanism, a first transmission component, a lifting component and a rotating component, and a second transmission component, and is characterized in that the rotary lifting mechanism comprises a first driving motor, an integrated box body, a lifting output shaft, a first transmission component and a rotating component; the supporting plate is arranged above the integrated box body and fixedly connected with the lifting output shaft, and the two ends, in the length direction, of the supporting plate are each rotationally provided with a rotary workbench assembly; the preparation station limiting assembly is fixed to one side of the integrated box body, located below one rotary workbench assembly and used for relatively fixing the rotary workbench assembly and the supporting plate; and the horizontal cam rotary table is arranged on the other side of the integrated box body and located below the other rotary workbench assembly, and the horizontal cam rotary table is connected with the rotary workbench assembly and drives the rotary workbench assembly to rotate. The numerical control machine tool is provided with the two rotary workbench assemblies used for installing and bearing the workpieces, so that the shutdown waiting time of a single-workbench machine tool during workpiece loading and unloading during part switching is shortened, and the machining efficiency of the machine tool is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, in particular to a cam-type double-exchange turntable. Background Art

[0002] A CNC machine tool, short for digitally controlled machine tool, is an automated machine tool equipped with a program control system. This control system logically processes programs specified by control codes or other symbolic instructions, decodes them, and represents them as coded numbers, which are then input into the CNC device via an information carrier. After computational processing, the CNC device issues various control signals, controlling the machine's movements and automatically producing parts to the shape and size specified in the drawings.

[0003] The turntable is an important accessory of CNC machine tools. It is used to hold and fix the workpiece to be processed, and drive the workpiece to be processed to rotate so that the CNC machine tool can process multiple sides of the workpiece in one clamping.

[0004] Chinese utility model patent publication number CN117161775A discloses a small high-precision five-axis CNC turntable with integrated multi-channel automated oil circuits. The turntable mainly includes an A-axis transmission component, a C-axis transmission component and a tail shaft end. The C-axis transmission component and the tail shaft end are both arranged on the A-axis transmission component. The C-axis output transmission component includes a chuck worktable, and the chuck worktable is used to mount the workpiece to be processed.

[0005] Because the CNC turntable described above only has a single chuck table for mounting and placing workpieces, replacing a completed workpiece with a new one requires downtime, slowing down machining efficiency. Conventional turntables feature disc brakes that provide low braking torque, while wraparound brakes offer greater braking torque, enabling the turntable to handle higher-intensity cutting forces and ensuring precision. Utility Model Content

[0006] In order to solve the problems in the prior art of time-consuming replacement of workpieces resulting in low processing efficiency and insufficient braking torque of the turntable disc brake, the utility model provides a cam-type double-exchange turntable equipped with an embracing brake system.

[0007] To achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is: a cam-type double-exchange turntable, comprising: a rotary lifting mechanism, comprising a first drive motor, an integrated housing, a lifting output shaft, a first transmission assembly, a lifting assembly and a rotating assembly, the lifting output shaft being movably arranged in the integrated housing and partially extending out of the integrated housing, the lifting assembly and the rotating assembly being both arranged in the integrated housing, the lifting assembly and the rotating assembly being respectively connected to the lifting output shaft and the first transmission assembly, the first drive motor being connected to the first transmission assembly to drive the lifting output shaft to lift and rotate;

[0008] A support plate is provided above the integrated box body and is fixedly connected to the lifting output shaft. A rotary table assembly is rotatably provided at each end of the support plate along the length direction. The rotary table assembly is used to install and place workpieces.

[0009] a preparatory station limit assembly, fixed to one side of the integrated box and located below one of the rotary table assemblies, for fixing the rotary table assembly relative to the support plate so as to facilitate mounting a workpiece on the rotary table assembly;

[0010] The horizontal cam turntable is arranged on the other side of the integrated box and is located below the other rotary table assembly. The horizontal cam turntable is connected to the rotary table assembly and drives the rotary table assembly to rotate.

[0011] In some embodiments, the first transmission assembly includes a camshaft disposed in the integrated housing and perpendicular to the lifting output shaft, a first driving gear fixed to one end of the camshaft, and a first driven gear meshing with the first driving gear, wherein the first driven gear is fixed to the output shaft of the first drive motor.

[0012] In some embodiments, the rotating assembly includes a cambered cam and a first needle roller bearing, wherein the first needle roller bearing is fixed to the lower end of the lifting output shaft, and the first needle roller bearing has a plurality of first rollers distributed along the circumference. The cambered cam is fixed to the camshaft, and a rotation groove is provided on the outer circumference of the cambered cam. When the first roller enters the rotation groove, the lifting output shaft rotates, and when the first roller leaves the rotation groove, the lifting output shaft stops rotating.

[0013] The lifting assembly includes two rocker arms, two flanges and two second rollers. The two flanges are respectively located on both sides of the arc cam. The lower end of the lifting output shaft is provided with an annular groove along the circumference. The two second rollers are respectively fixed to one end of the two rocker arms and slidably arranged in the annular groove. A circular through hole is opened in the middle part of the rocker arm. The flange can be rotatably arranged in the circular through hole. The flange has a large end and a small end. The distance between the large end and the camshaft is greater than the distance between the small end and the camshaft.

[0014] In some embodiments, U-shaped grooves are provided at both ends of the support plate;

[0015] The rotary table assembly includes a rotary table and a cone seat protective cover fixed to the lower end surface of the rotary table, the cone seat protective cover is rotatably arranged in the U-shaped groove, and the lower end surface of the cone seat protective cover is provided with at least one connecting countersunk hole, and the connecting countersunk hole is provided with an upper cone seat assembly;

[0016] The preparatory station limit assembly is provided with at least a first lower cone seat assembly, and the first lower cone seat assembly cooperates with the lower cone seat assembly to relatively fix the cone seat protective cover and the preparatory station limit assembly;

[0017] The horizontal cam turntable is provided with at least one second lower cone seat assembly, and the second lower cone seat assembly cooperates with the lower cone seat assembly to relatively fix the cone seat protective cover and the horizontal cam turntable.

[0018] In some embodiments, the upper cone seat assembly includes an upper cone seat fixed in the connecting countersunk hole, the preparatory station limiting assembly also includes a preparatory station center shaft and a preparatory station rotating seat, the preparatory station center shaft is fixed to the top of the integrated box body, the preparatory station rotating seat is sleeved on the preparatory station center shaft through a tapered roller bearing, the preparatory station rotating seat is provided with at least two first locking mounting holes, the first lower cone seat assembly is fixed in the first locking mounting hole, the first lower cone seat assembly includes a first lower cone seat and a tool handle pull nail, the tool handle pull nail is fixed in the first lower cone seat and extends out of the first lower cone seat, when the rotary worktable assembly and the preparatory station limiting assembly are relatively fixed, the first lower cone seat is inserted into the upper cone seat, and the tool handle pull nail is inserted into the connecting countersunk hole;

[0019] The preparatory station limit assembly also includes a locking assembly for fixing the preparatory station rotating seat relative to the integrated box body, and the locking assembly includes a latch bracket, a handle, a return spring, a latch and a positioning seat top cap, and the latch bracket is fixed to one side of the integrated box body by a bolt, and a movable groove is provided inside the latch bracket, and a long groove connected to the movable groove is provided on the outer side of the latch bracket, and the latch is movably configured in the movable groove and extends the movable groove from above the latch bracket, and the return spring is configured in the movable groove and is located below the latch, and the handle passes through the long slot and is fixedly connected to the latch, and the preparatory station rotating seat is also provided with a top cap mounting through hole, and the positioning seat top cap is fixed in the top cap mounting through hole, and the latch is configured in the positioning seat top cap mounting hole.

[0020] In certain embodiments, the upper cone seat assembly includes an upper cone seat fixed in the connecting counterbore;

[0021] The second lower cone seat assembly includes a second lower cone seat, a cone seat pull ring, a cone seat center rod, a compression spring, a bearing steel ball and a second tool handle pull nail, at least two gaps are provided at the upper end of the second lower cone seat, the cone seat pull ring is arranged in the second lower cone seat, the cone seat pull ring has an upper channel and a lower channel that are connected to each other, an abutment ring is provided between the upper channel and the lower channel, the cone seat center rod is movably arranged in the upper channel and the lower channel, the second tool handle pull nail is movably arranged in the upper channel and fixedly connected to the cone seat center rod, the compression spring is sleeved on the cone seat center rod and is located between the abutment ring and the second lower cone seat, the upper end of the cone seat pull ring is circumferentially provided with at least three steel ball holes, and the bearing steel balls are movably arranged in the steel ball holes;

[0022] When the rotary table assembly is relatively fixed to the horizontal cam turntable, the second lower conical seat is inserted into the upper conical seat and the upper end of the second lower conical seat is stretched outwards and locked with the upper conical seat under the action of the bearing steel ball.

[0023] In some embodiments, when the center rod of the cone seat is actuated to move upward, the center rod of the cone seat drives the second tool handle pull nail to push the bearing steel ball toward the second lower cone seat to open the upper end of the second lower cone seat;

[0024] The horizontal cam turntable includes a turntable rotating seat and an oil distributor, the oil distributor is vertically arranged along the center line of the turntable rotating seat, the upper end surface of the turntable rotating seat is provided with at least two second mounting grooves, and the second lower conical seat is detachably fixed in the second mounting grooves;

[0025] The turntable rotating seat is provided with an oil inlet channel, an oil outlet channel and an air outlet channel. The oil inlet channel, the oil outlet channel and the air outlet channel are respectively connected to the second mounting groove and the oil circuit distributor. Oil is injected into the second mounting groove through the oil circuit distributor to move the center rod of the conical seat upward.

[0026] In some embodiments, the horizontal cam turntable further includes a turntable housing, a second drive motor, a second rotation output shaft, and a second transmission assembly, wherein the second rotation output shaft and the second transmission assembly are both disposed within the turntable housing, and the second drive motor drives the second rotation output shaft to rotate via the second transmission assembly 56;

[0027] The turntable rotating seat is rotatably arranged above the turntable housing and connected to the second rotating output shaft. The second rotating output shaft is provided with a central through hole, and the oil distributor is partially arranged in the central through hole.

[0028] In some embodiments, the horizontal cam turntable further includes a brake assembly, the brake assembly including a brake fixing ring and a brake ring, the brake fixing ring is arranged on the outside of the second rotary output shaft, and the brake ring is arranged between the second rotary output shaft and the brake fixing ring.

[0029] When the brake oil pressure is reached in the brake oil chamber between the brake ring and the brake fixing ring, the inner wall of the brake ring deforms inward along the circumferential direction, tightly fitting with the outer wall of the second rotary output shaft to generate friction torque, thereby braking the horizontal cam turntable.

[0030] In some embodiments, the second transmission assembly includes an integrated cambered camshaft, a second needle roller bearing, a second driving gear and a second driven gear. The integrated cambered camshaft is rotatably disposed in the turntable housing and is vertically arranged with the second rotation output shaft. The second needle roller bearing is fixed to the lower end of the second rotation output shaft and meshes with the integrated cambered camshaft for transmission. The second driving gear is fixed to the output shaft of the second drive motor, and the second driven gear is fixed to the integrated cambered camshaft and meshes with the second driving gear.

[0031] In some embodiments, the horizontal cam turntable further includes a brake assembly, the brake assembly including a brake fixing ring and a brake ring, the brake fixing ring being disposed outside the second rotary output shaft, and the brake ring being disposed between the second rotary output shaft and the brake fixing ring;

[0032] When the brake oil pressure is reached in the brake oil chamber between the brake ring and the brake fixing ring, the inner wall of the brake ring deforms inward along the circumferential direction, tightly fitting with the outer wall of the second rotary output shaft to generate friction torque, thereby braking the horizontal cam turntable.

[0033] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0034] The CNC machining center of the utility model has two rotary table assemblies for mounting and placing workpieces. During production operation, the machining and clamping of the workpieces can be carried out simultaneously. After the machining is completed, the two rotary table assemblies are exchanged through the rotary lifting mechanism, and the operation is cyclical, which reduces the downtime waiting time of the single-table machine tool when loading and unloading workpieces when switching parts, and improves the machining efficiency of the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the three-dimensional structure of the cam-type double-exchange turntable in Example 1 of the present utility model;

[0036] Figure 2 This is a cross-sectional view of the cam-type double-exchange turntable in Example 1 of the present utility model;

[0037] Figure 3 This is an exploded view of the components of the rotary lifting mechanism and the preparatory station limit assembly in the first embodiment of the present utility model;

[0038] Figure 4 This is a schematic structural diagram of the rotary worktable assembly in Example 1 of the present utility model;

[0039] Figure 5 This is a cross-sectional view of the horizontal cam turntable in Example 1 of the present utility model;

[0040] Figure 6 This is an exploded view of the components of the horizontal cam turntable in the first embodiment of the present utility model;

[0041] Figure 7 This is an exploded view of the components of the second lower cone seat assembly in Example 1 of the present utility model. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0044] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe the present invention and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0045] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0046] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0047] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0048] Example 1

[0049] Reference Figure 1 and Figure 2The present disclosure provides a cam-type double-exchange turntable, including a rotary lifting mechanism 1, a support plate 2, a preparatory station limit assembly 4 and a horizontal cam turntable 5. The support plate 2 is arranged above the rotary lifting mechanism 1 and is driven by the support plate 2 to perform lifting and rotating movements. A rotary worktable assembly 3 is rotatably provided at both ends of the support plate 2 along the length direction. The rotary worktable assembly 3 is used to install and place workpieces. The preparatory station limit assembly 4 and the horizontal cam turntable 5 are respectively arranged on the opposite sides of the rotary lifting mechanism 1 and are respectively located below the two rotary worktable assemblies 3. The preparatory station limit assembly 4 is used to fix the rotary worktable assembly 3 relative to the integrated box 1 so as to facilitate the installation of the workpiece on the rotary worktable assembly 3. The horizontal cam turntable 5 is connected to the rotary worktable assembly 3 and drives the rotary worktable assembly 3 to rotate.

[0050] The rotary lifting mechanism 1 includes a first drive motor 15, an integrated housing 10, a lifting output shaft 11, a first transmission assembly 12, a lifting assembly 13 and a rotating assembly 14. The lifting output shaft 11 is movably configured in the integrated housing 10 and partially extends out of the integrated housing 10. The lifting assembly 13 and the rotating assembly 14 are both configured in the integrated housing 10. The lifting assembly 13 and the rotating assembly 14 are respectively connected to the lifting output shaft 11 and the first transmission assembly 12. The first drive motor 15 is connected to the first transmission assembly 12 to drive the lifting output shaft 11 to lift and rotate.

[0051] Reference Figure 3 The first drive motor 15 is fixed to the outside of the integrated housing 1 via a motor plate 150. The first transmission assembly 12 includes a camshaft 121 disposed within the integrated housing 10 and perpendicular to the lift output shaft 11, a first driving gear 123 fixed to one end of the camshaft 121, and a first driven gear 122 meshing with the first driving gear 123. The first driven gear 122 is fixed to the output shaft of the first drive motor 15. The ends of the camshaft 121 are fixed to the integrated housing 1 via a deflection adjustment seat 16 and a bearing, respectively.

[0052] In some embodiments, the rotating assembly 14 includes an arcuate cam 141 and a first needle roller bearing 142. The first needle roller bearing 142 is fixed to the lower end of the lifting output shaft 11. The first needle roller bearing 142 has a plurality of first rollers 1420 distributed along the circumferential direction. The arcuate cam 141 is fixed on the camshaft 121. The outer peripheral surface of the arcuate cam 141 is provided with a rotating groove. When the first roller 1420 enters the rotating groove, the lifting output shaft 11 rotates. When the first roller 1420 leaves the rotating groove, the lifting output shaft 11 stops rotating.

[0053] In certain embodiments, the lift assembly 13 includes two rocker arms 132, two flanges 131, and two second rollers 133. The two flanges 131 are fixed to the camshaft 121 and located on either side of the arcuate cam 141. An annular groove 110 is circumferentially defined at the lower end of the lift output shaft 11. The two second rollers 133 are fixed to one end of each rocker arm 132 and slideably disposed within the annular groove 110. A circular through-hole 1320 is defined in the middle of each rocker arm 132, and the flange is rotatably disposed within the circular through-hole 1320. The flange 131 has a large end and a small end, with the large end being farther from the camshaft 121 than the small end. The other ends of the two rocker arms 132 are connected via a rocker shaft 134.

[0054] Furthermore, the rotary lift mechanism 1 includes a central shaft 18 and an output shaft guide seat 19. The central shaft 18 is fixed to the bottom plate of the integrated housing 1 and is disposed within the lift output shaft 11. An oil passageway forms a piston-like structure between the central shaft 18 and the lift output shaft 11, thereby improving the stability of the rotary lift mechanism 1 during lifting. The output shaft guide seat 19 is fixedly connected to the integrated housing 1 via bolts, and the upper end of the lift output shaft 11 moves through the output shaft guide seat 19.

[0055] Preferably, the camshaft 121 , the arcuate cam 141 and the two flanges 131 are an integrally formed structure.

[0056] In some embodiments, U-shaped grooves 20 are provided at both ends of the support plate 2. Figure 4 The rotary table assembly 3 includes a rotary table 30 and a cone seat shield 31 fixed to the lower end surface of the rotary table 30. The cone seat shield 31 is rotatably arranged in the U-shaped groove 20. The lower end surface of the cone seat shield 31 is provided with at least two connecting countersunk holes, and the connecting countersunk holes are provided with an upper cone seat assembly. The preparatory station limit assembly 4 is provided with at least a first lower cone seat assembly. The first lower cone seat assembly cooperates with the upper cone seat assembly to relatively fix the cone seat shield 31 and the preparatory station limit assembly 4. The horizontal cam turntable 5 is provided with at least a second lower cone seat assembly 55. The second lower cone seat assembly 55 cooperates with the upper cone seat assembly to relatively fix the cone seat shield 31 and the horizontal cam turntable 5.

[0057] In some embodiments, the upper cone seat assembly includes an upper cone seat 32 fixed in the connecting countersunk hole; the preparatory station limit assembly 4 also includes a preparatory station center shaft 40 and a preparatory station rotating seat 41, the preparatory station center shaft 40 is fixed on the top of the integrated box 10, and the preparatory station rotating seat 41 is sleeved on the preparatory station center shaft 40 through a tapered roller bearing 43, and the preparatory station rotating seat 41 is provided with at least two first locking mounting holes; the first lower cone seat assembly is fixed in the first locking mounting hole, the first lower cone seat assembly includes a first lower cone seat 42 and a tool handle pull nail, the tool handle pull nail is fixed in the first lower cone seat 42 and extends out of the first lower cone seat 42, when the rotary worktable assembly 3 and the preparatory station limit assembly 4 are relatively fixed, the first lower cone seat 42 is inserted in the upper cone seat 32, and the tool handle pull nail is inserted into the connecting countersunk hole.

[0058] In some embodiments, the preparatory station limit assembly 4 also includes a locking assembly that fixes the preparatory station rotating seat 41 relative to the integrated box body 10. The locking assembly includes a latch bracket 44, a handle 45, a return spring 46, a latch 47 and a positioning seat top cap 48. The latch bracket 44 is fixed to one side of the integrated box body 10 by bolts. A movable groove is provided inside the latch bracket 44, and a long groove connected to the movable groove is provided on the outer side of the latch bracket 44. The latch 47 is movably configured in the movable groove and extends the movable groove from above the latch bracket 44. The return spring 46 is configured in the movable groove and is located below the latch 47. The handle 45 passes through the long slot and is fixedly connected to the latch 47; the preparatory station rotating seat 41 is also provided with a top cap mounting through hole, the positioning seat top cap 48 is fixed in the top cap mounting through hole, and the latch 47 is configured in the mounting hole of the positioning seat top cap 48.

[0059] In some embodiments, the upper cone seat assembly includes an upper cone seat 32 fixed in a connecting counterbore. Figure 5 and Figure 7 The second lower cone seat assembly 55 includes a second lower cone seat 551, a cone seat pull ring 552, a cone seat center rod 553, a compression spring 555, a bearing steel ball 556 and a second tool handle pull nail 554. The upper end of the second lower cone seat 551 is provided with at least two gaps. The cone seat pull ring 552 is arranged in the second lower cone seat 551. The cone seat pull ring 552 has an upper channel and a lower channel that are connected to each other. There is an abutment ring between the upper channel and the lower channel. The cone seat center rod 553 is movably arranged in the upper channel and the lower channel. The second tool handle pull nail 554 is movably arranged in the upper channel and fixedly connected to the cone seat center rod 553. The compression spring 555 is sleeved on the cone seat center rod 553 and is located between the abutment ring and the second lower cone seat 551. The upper end of the cone seat pull ring 552 is provided with at least three steel ball holes along the circumferential direction, and the bearing steel ball 556 is movably arranged in the steel ball hole. When the rotary table assembly 3 and the horizontal cam turntable 5 are relatively fixed, the second lower conical seat 551 is inserted into the upper conical seat 32 and the upper end of the second lower conical seat 551 is stretched outward under the action of the bearing steel ball 556 and locked with the upper conical seat 32.

[0060] In some embodiments, when the cone seat center rod 553 is actuated to move upward, the cone seat center rod 553 drives the second shank pull nail 554 to push the bearing steel ball 556 toward the second lower cone seat 551 to open the upper end of the second lower cone seat 551.

[0061] Furthermore, the horizontal cam turntable 5 includes a turntable rotating base 50 and an oil distributor 53. The oil distributor 53 is arranged vertically along the centerline of the turntable rotating base 50. The upper end surface of the turntable rotating base 50 is provided with at least two second mounting slots, and the second lower conical seat 551 is removably fixed in the second mounting slots. The turntable rotating base 50 is provided with an oil inlet channel, an oil outlet channel, and an air outlet channel. The oil inlet channel, the oil outlet channel, and the air outlet channel are respectively connected to the second mounting slot and the oil distributor 53. Oil is injected into the second mounting slot through the oil distributor 53, causing the conical seat center rod 553 to move upward.

[0062] Reference Figure 6 The horizontal cam turntable 5 also includes a turntable housing 51, a second drive motor 57, a second rotation output shaft 54, and a second transmission assembly 56. The second rotation output shaft 54 ​​and the second transmission assembly 56 are both disposed within the turntable housing 51. The second drive motor 57 drives the second rotation output shaft 54 ​​to rotate via the second transmission assembly 56. The turntable rotating seat 50 is rotatably disposed above the turntable housing 51 and is connected to the second rotation output shaft 54. The second rotation output shaft 54 ​​is provided with a central through hole, and the oil distributor 53 is partially disposed in the central through hole.

[0063] Furthermore, the second drive motor 57 is fixed to one side of the turntable housing 51 through a motor plate 570 . The second drive motor 57 is further covered with a motor protection shell 571 , which is fixedly connected to the turntable housing 51 through bolts.

[0064] In some embodiments, the second transmission assembly 56 includes an integrated arc-surface camshaft 560, a second needle roller bearing 561, a second driving gear 562 and a second driven gear 563. The integrated arc-surface camshaft 560 can be rotatably configured in the turntable housing 51 and is vertically arranged with the second rotating output shaft 54. The second needle roller bearing 561 is fixed at the lower end of the second rotating output shaft 54 ​​and meshes with the integrated arc-surface camshaft 560 for transmission. The second driving gear 562 is fixed on the output shaft of the second drive motor 57. The second driven gear 563 is fixed on the integrated arc-surface camshaft 560 and meshes with the second driving gear 562.

[0065] Furthermore, both ends of the integrated arc-surface camshaft 560 are fixedly connected to the turntable housing 51 via a second eccentric adjustment seat 59 .

[0066] Furthermore, the horizontal cam turntable 5 further includes a turntable bearing 60 , and the second rotary output shaft 54 ​​is fixedly connected to the turntable housing 51 via the turntable bearing 60 .

[0067] Furthermore, the horizontal cam turntable 5 includes a brake assembly, which includes a brake retaining ring 61 and a brake ring 62. The brake retaining ring 61 is disposed outside the second rotary output shaft 54, and the brake ring 62 is disposed between the second rotary output shaft 54 ​​and the brake retaining ring 61. When the brake oil pressure reaches a certain level within the brake oil chamber between the brake ring 62 and the brake retaining ring 61, the inner wall of the brake ring 62 deforms inwardly along the circumferential direction, tightly contacting the outer wall of the second rotary output shaft 54 ​​to generate a friction torque, thereby braking the horizontal cam turntable 5.

[0068] Furthermore, the horizontal cam turntable 5 also includes a sealing assembly, which includes a first sealing frame 58 and a second sealing frame 63 . The first sealing frame 58 and the second sealing frame 63 are respectively sleeved on the lower end and the upper end of the second rotary output shaft 54 ​​.

[0069] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement 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 limited to the embodiments shown herein, but is intended to encompass the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cam-type double-exchange turntable, characterized in that: include: A rotary lifting mechanism (1) comprises a first drive motor (15), an integrated housing (10), a lifting output shaft (11), a first transmission assembly (12), a lifting assembly (13) and a rotating assembly (14); the lifting output shaft (11) is movably arranged in the integrated housing (10) and partially extends out of the integrated housing (10); the lifting assembly (13) and the rotating assembly (14) are both arranged in the integrated housing (10); the lifting assembly (13) and the rotating assembly (14) are respectively connected to the lifting output shaft (11) and the first transmission assembly (12); the first drive motor (15) is connected to the first transmission assembly (12) to drive the lifting output shaft (11) to lift and rotate; A support plate (2) is arranged above the integrated box (10) and fixedly connected to the lifting output shaft (11); a rotary table assembly (3) is rotatably provided at each end of the support plate (2) along the length direction; the rotary table assembly (3) is used for mounting and placing workpieces; a preparatory station limit assembly (4), fixed to one side of the integrated box (10) and located below one of the rotary table assemblies (3), and used to relatively fix the rotary table assembly (3) and the support plate (2) so as to facilitate mounting a workpiece on the rotary table assembly (3); A horizontal cam turntable (5) is arranged on the other side of the integrated housing (10) and is located below the other rotary table assembly (3). The horizontal cam turntable (5) is connected to the rotary table assembly (3) and drives the rotary table assembly (3) to rotate.

2. The cam-type double-exchange turntable according to claim 1, characterized in that: The first transmission assembly (12) comprises a camshaft (121) arranged in the integrated housing (10) and perpendicular to the lifting output shaft (11), a first driving gear (123) fixed to one end of the camshaft (121), and a first driven gear (122) meshing with the first driving gear (123), wherein the first driven gear (122) is fixed to the output shaft of the first drive motor (15).

3. The cam-type double-exchange turntable according to claim 2, characterized in that: The rotating assembly (14) includes an arcuate cam (141) and a first needle roller bearing (142), wherein the first needle roller bearing (142) is fixed to the lower end of the lifting output shaft (11), and the first needle roller bearing (142) has a plurality of first rollers (1420) distributed along the circumference. The arcuate cam (141) is fixed to the camshaft (121), and a rotating groove is provided on the outer circumference of the arcuate cam (141). When the first roller (1420) enters the rotating groove, the lifting output shaft (11) rotates, and when the first roller (1420) leaves the rotating groove, the lifting output shaft (11) stops rotating. The lifting assembly (13) includes two rocker arms (132), two flanges (131) and two second rollers (133). The two flanges (131) are respectively located on both sides of the arc cam (141). The lower end of the lifting output shaft (11) is provided with an annular groove (110) along the circumference. The two second rollers (133) are respectively fixed to one end of the two rocker arms (132) and slidably arranged in the annular groove (110). A circular through hole (1320) is opened in the middle part of the rocker arm (132). The flange can be rotatably arranged in the circular through hole (1320). The flange (131) has a large end and a small end. The distance between the large end and the cam shaft (121) is greater than the distance between the small end and the cam shaft (121).

4. The cam-type double-exchange turntable according to any one of claims 1 to 3, characterized in that: Both ends of the support plate (2) are provided with U-shaped grooves (20); The rotary table assembly (3) comprises a rotary table (30) and a cone seat protective cover (31) fixed to the lower end surface of the rotary table (30), wherein the cone seat protective cover (31) is rotatably arranged in the U-shaped groove (20), and the lower end surface of the cone seat protective cover (31) is provided with at least two connecting countersunk holes, wherein the connecting countersunk holes are provided with an upper cone seat assembly. The preparatory station limiting assembly (4) is provided with at least a first lower cone seat assembly, and the first lower cone seat assembly cooperates with the upper cone seat assembly to relatively fix the cone seat protective cover (31) and the preparatory station limiting assembly (4); The horizontal cam turntable (5) is provided with at least one second lower cone seat assembly (55), and the second lower cone seat assembly (55) cooperates with the upper cone seat assembly to relatively fix the cone seat protective cover (31) and the horizontal cam turntable (5).

5. The cam-type double-exchange turntable according to claim 4, characterized in that: The upper cone seat assembly includes an upper cone seat (32) fixed in the connecting counterbore, the preparatory station limiting assembly (4) also includes a preparatory station central axis (40) and a preparatory station rotating seat (41), the preparatory station central axis (40) is fixed on the top of the integrated box (10), the preparatory station rotating seat (41) is sleeved on the preparatory station central axis (40) through a tapered roller bearing (43), the preparatory station rotating seat (41) is provided with a plurality of first locking mounting holes, the first lower cone seat assembly is fixed in the first cone seat mounting hole, the first lower cone seat assembly includes a first lower cone seat (42) and a tool handle rivet, the tool handle rivet is fixed in the first lower cone seat (42) and extends out of the first lower cone seat (42), when the rotary worktable assembly (3) and the preparatory station limiting assembly (4) are relatively fixed, the first lower cone seat (42) is inserted into the upper cone seat (32), and the tool handle rivet is inserted into the connecting counterbore; The preparatory station limit assembly (4) also includes a locking assembly for fixing the preparatory station rotating seat (41) relative to the integrated box (10), the locking assembly includes a latch bracket (44), a handle (45), a return spring (46), a latch (47) and a positioning seat top cap (48), the latch bracket (44) is fixed to one side of the integrated box (10) by bolts, a movable groove is provided inside the latch bracket (44), and a long groove connected to the movable groove is provided on the outer side of the latch bracket (44), and the latch (47) is movably arranged on the The movable groove is in the movable groove and extends from the top of the latch bracket (44), the reset spring (46) is arranged in the movable groove and is located below the latch (47), the handle (45) passes through the long groove and is fixedly connected to the latch (47), the preparatory station rotating seat (41) is also provided with a top cap mounting through hole, the positioning seat top cap (48) is fixed in the top cap mounting through hole, and when the integrated box (10) and the preparatory station rotating seat (41) are relatively fixed, the latch (47) is inserted into the positioning seat top cap (48) mounting hole.

6. The cam-type double-exchange turntable according to claim 4, characterized in that: The upper cone seat assembly includes an upper cone seat (32) fixed in the connecting counterbore; The second lower cone seat assembly (55) includes a second lower cone seat (551), a cone seat pull ring (552), a cone seat center rod (553), a compression spring (555), a bearing steel ball (556) and a second handle pull nail (554). The upper end of the second lower cone seat (551) is provided with at least two through holes. The cone seat pull ring (552) is arranged in the second lower cone seat (551). The cone seat pull ring (552) has an upper channel and a lower channel that are interconnected. There is a stop between the upper channel and the lower channel. The connecting ring, the cone seat center rod (553) is movably arranged in the upper channel and the lower channel, the second shank pull nail (554) is movably arranged in the upper channel and fixedly connected to the cone seat center rod (553), the compression spring (555) is sleeved on the cone seat center rod (553) and is located between the abutment ring and the second lower cone seat (551), the upper end of the cone seat pull ring (552) is circumferentially provided with at least three steel ball holes, and the bearing steel ball (556) is movably arranged in the steel ball holes; When the rotary worktable assembly (3) and the horizontal cam turntable (5) are relatively fixed, the second lower conical seat (551) is inserted into the upper conical seat (32) and the upper end of the second lower conical seat (551) is stretched outward under the action of the bearing steel ball (556) and locked with the upper conical seat (32).

7. The cam-type double-exchange turntable according to claim 6, characterized in that: When the center rod (553) of the cone seat is actuated to move upward, the center rod (553) of the cone seat drives the second handle pull nail (554) to push the bearing steel ball (556) toward the second lower cone seat (551) to open the upper end of the second lower cone seat (551); The horizontal cam turntable (5) comprises a turntable rotating seat (50) and an oil distributor (53), wherein the oil distributor (53) is vertically arranged along the center line of the turntable rotating seat (50), and the upper end surface of the turntable rotating seat (50) is provided with at least two second mounting grooves, and the second lower cone seat (551) is detachably fixed in the second mounting grooves; The turntable rotating seat (50) is provided with an oil inlet channel, an oil outlet channel and an air outlet channel, wherein the oil inlet channel, the oil outlet channel and the air outlet channel are respectively connected to the second mounting groove and the oil distributor (53), and oil is injected into the second mounting groove through the oil distributor (53) to move the cone seat center rod (553) upward.

8. The cam-type double-exchange turntable according to claim 7, characterized in that: The horizontal cam turntable (5) further comprises a turntable housing (51), a second drive motor (57), a second rotation output shaft (54) and a second transmission assembly (56), wherein the second rotation output shaft (54) and the second transmission assembly (56) are both arranged in the turntable housing (51), and the second drive motor (57) drives the second rotation output shaft (54) to rotate via the second transmission assembly (56); The turntable rotating seat (50) is rotatably arranged above the turntable housing (51) and connected to the second rotating output shaft (54). The second rotating output shaft (54) is provided with a central through hole, and the oil distributor (53) is partially arranged in the central through hole.

9. The cam-type double-exchange turntable according to claim 8, characterized in that: The second transmission assembly (56) comprises an integrated cambered camshaft (560), a second needle roller bearing (561), a second driving gear (562) and a second driven gear (563); the integrated cambered camshaft (560) is rotatably disposed in the turntable housing (51) and is vertically arranged with respect to the second rotating output shaft (54); the second needle roller bearing (561) is fixed to the lower end of the second rotating output shaft (54) and meshes with the integrated cambered camshaft (560) for transmission; the second driving gear (562) is fixed to the output shaft of the second drive motor (57); and the second driven gear (563) is fixed to the integrated cambered camshaft (560) and meshes with the second driving gear (562).

10. The cam-type double-exchange turntable according to claim 9, characterized in that: The horizontal cam turntable (5) further includes a brake assembly, which includes a brake fixing ring (61) and a brake ring (62), wherein the brake fixing ring (61) is arranged outside the second rotary output shaft (54), and the brake ring (62) is arranged between the second rotary output shaft (54) and the brake fixing ring (61); After the brake oil pressure is reached in the brake oil chamber between the brake ring (62) and the brake fixing ring (61), the inner wall of the brake ring (62) deforms inward along the circumferential direction and fits tightly with the outer wall of the second rotating output shaft (54) to generate a friction torque, thereby braking the horizontal cam turntable (5).

Images