Accurate positioning of a feeding device and rotary machine tool

Abstract

The application provides a precise positioning feeding device and a rotary machine tool, and relates to the technical field of machining. The feeding device is arranged on a feeding station of the machine tool and is used for conveying a workpiece with an inner circle and a positioning hole. The feeding device comprises a base driven by a driving assembly. A positioning column is arranged on the base and comprises a first column body, a variable-diameter column body and a second column body. The diameter of the first column body is smaller than the diameter of the inner circle and the diameter of the second column body. The diameter of one end of the variable-diameter column body is the same as the diameter of the first column body, and the diameter of the other end of the variable-diameter column body is the same as the diameter of the second column body. A positioning pin is arranged on the positioning column. The inner circle is coaxial with the positioning column through mutual cooperation between the variable-diameter column body and the workpiece. The angle of the workpiece is determined by using the positioning pin. Compared with the traditional feeding and discharging mode, the positioning error in the use process of the clamping jaw is avoided. Meanwhile, the workpiece is uniformly positioned by the feeding device, the relative error between multiple clamps is avoided, and only the positioning column and the positioning pin need to be replaced when the type is changed, so that the complexity of operation is reduced.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and in particular to a precise positioning feeding device and a rotary machine tool. Background Technology

[0002] In traditional lathe machining, chucks are typically used for loading. These chucks consist of multiple synchronously moving clamping parts that simultaneously abut against the workpiece. The repeated movement of these clamping parts to tighten or loosen the workpiece inevitably introduces errors, affecting the workpiece's positioning accuracy. A fixture is provided corresponding to the chucks, with multiple locating pins that mate with locating holes on the workpiece for positioning. With technological advancements, integrated rotary lathes have emerged. Rotary lathes can perform multi-process machining of a single workpiece and simultaneous machining of multiple workpieces, thus having numerous machining stations. Each machining station has a fixture. During loading, the chucks need to place the workpiece sequentially onto multiple fixtures, engaging with the locating pins. This requires avoiding relative errors between the locating pins of the multiple fixtures while ensuring the lathe's rotational accuracy. Furthermore, when changing workpieces, all locating pins need to be replaced, significantly reducing efficiency. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the present invention provides a feeding device and a rotary machine tool that can be precisely positioned.

[0004] Firstly, the purpose of this invention is to address the above-mentioned problems by providing a precisely positioned loading device, disposed at the loading station of a machine tool, for conveying a workpiece having an inner circle and a positioning hole to the clamping mechanism of the machine tool, comprising:

[0005] A base, wherein the base is disposed on the loading station;

[0006] The positioning post is disposed on the base and extends along a first horizontal direction. It includes an integrally connected first post, a variable-diameter post, and a second post. The diameter of the first post is smaller than the inner circle diameter, and the diameter of the second post is larger than the inner circle diameter. The diameter of the end face of the variable-diameter post near the first post is the same as the diameter of the first post, and the diameter of the end face of the variable-diameter post near the second post is the same as the diameter of the second post.

[0007] A positioning pin is provided on the positioning post and can be inserted into the positioning hole.

[0008] A drive assembly is provided on the loading station and is used to drive the base to move along the first horizontal direction.

[0009] According to the technical solutions provided by certain embodiments of the present invention, the base is further provided with a sleeve, and a connector is slidably fitted inside the sleeve along the first horizontal direction. The end of the connector away from the bottom of the sleeve is connected to the positioning post. The bottom of the sleeve is provided with a plurality of elastic elements, and the free ends of the plurality of elastic elements all extend along the first horizontal direction and abut against the side of the connector away from the positioning post.

[0010] According to the technical solutions provided by certain embodiments of the present invention, the connector has two arc-shaped mounting holes at one end near the positioning post. The positioning pin can rotate relative to the positioning post along the mounting holes and can also be fixed relative to the positioning post by being threaded to the two mounting holes.

[0011] According to certain embodiments of the present invention, a limiting hole is formed on the variable diameter column along its radial direction, a limiting member is provided in the limiting hole, and the free end of the limiting member extends out of the limiting hole.

[0012] According to certain embodiments of the present invention, the technical solution further includes a guide component, the guide component including a first guide rail, two first guide rails being disposed on the loading station along the first horizontal direction, a first slide table being slidably connected to the two first guide rails, and the base being disposed on the first slide table.

[0013] According to the technical solutions provided by certain embodiments of the present invention, the loading station is further provided with a first rack extending along the first horizontal direction, and the driving assembly includes a first driving motor, the first driving motor is disposed on the first slide, its driving shaft extends along the vertical direction and is sleeved with a first gear, the first gear meshing with the first rack.

[0014] Secondly, the present invention also provides a rotary machine tool, including a precisely positioned loading device as described above, and a frame, wherein a turntable is rotatably connected to the center of the frame, the turntable is driven by a second drive motor, a plurality of clamping mechanisms are evenly distributed on the turntable, and a plurality of processing stations and a loading station are provided on the frame corresponding to the plurality of clamping mechanisms, wherein a turning mechanism is provided on the processing station for processing the workpiece.

[0015] According to certain embodiments of the present invention, the clamping mechanism includes a positioning disk, a plurality of positioning disks are distributed around the turntable, a plurality of support blocks are provided on the side of the positioning disk near the positioning post, and a plurality of clamping components are provided around the positioning disk, the number of clamping components corresponding to the number of support blocks, the clamping components having a clamping part, and the clamping components also having a first state and a second state. When in the first state, the clamping part abuts against the workpiece, so that the side of the workpiece away from the clamping part is in contact with the plurality of support blocks; when in the second state, the clamping part releases the restriction on the workpiece.

[0016] According to certain embodiments of the present invention, the technical solution further includes a first conveying mechanism and a second conveying mechanism. The first conveying mechanism and the second conveying mechanism are respectively disposed on both sides of the loading station along the second horizontal direction, and are both used to convey the workpiece along the second horizontal direction, which is perpendicular to the first horizontal direction. A first gripping mechanism is also provided on the frame above the loading station. The first gripping mechanism is used to convey the workpiece from the first conveying mechanism to the positioning column, and is also used to convey the workpiece from the positioning column to the second conveying mechanism.

[0017] According to the technical solutions provided by certain embodiments of the present invention, an adjustment mechanism is further provided at the end of the first conveying mechanism in the conveying direction. The adjustment mechanism is used to drive the workpiece to rotate around the central axis of the inner circle so as to adjust the angle of the workpiece. A second gripping mechanism is further provided on one side of the adjustment mechanism. The second gripping mechanism is used to transport the workpiece from the first conveying mechanism to the adjustment mechanism.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention provides a precisely positioned feeding device, installed at the feeding station of a machine tool, for conveying a workpiece with an inner circle and a positioning hole to the clamping mechanism of the machine tool. It includes a base and a drive assembly, the drive assembly being able to drive the base to move along a first horizontal direction; the base is provided with a positioning post extending along the first horizontal direction, the positioning post including a first post, a variable-diameter post, and a second post integrally connected, the diameter of the first post being smaller than the inner circle diameter, the diameter of the second post being larger than the inner circle diameter, the diameter of the end face of the variable-diameter post near the first post being the same as the diameter of the first post, and the diameter of the end face of the variable-diameter post near the second post being... The second column has the same diameter, and the positioning column is also equipped with a positioning pin that can be inserted into the positioning hole. By setting the positioning pin, the rigid positioning of the workpiece is achieved according to the cooperation between the variable diameter column and the workpiece, ensuring that the inner circle of the workpiece is coaxial with the positioning pin. The angle of the workpiece is determined by a single positioning pin. Compared with the traditional method of using jaws and multiple positioning pins, the positioning error caused by the clamping or loosening of the jaws is avoided. At the same time, the use of the feeding device to uniformly position the workpiece can avoid the relative error between the positioning pins of multiple fixtures. Moreover, when the workpiece is changed, only the positioning pin and positioning pin of the feeding device need to be replaced, which greatly reduces the complexity of operation.

[0019] It should be understood that the descriptions of technical features, technical solutions, beneficial effects, or similar language in this invention do not imply that all features and advantages can be achieved in any single embodiment. Rather, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution, or beneficial effect is included in at least one embodiment. Therefore, the descriptions of technical features, technical solutions, or beneficial effects in this specification do not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in this embodiment can be combined in any suitable manner. Those skilled in the art will understand that embodiments can be implemented without one or more specific technical features, technical solutions, or beneficial effects of a particular embodiment. In other embodiments, additional technical features and beneficial effects may be identified in specific embodiments that do not embody all embodiments. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a precisely positioned feeding device provided in Embodiment 1 of the present invention;

[0022] Figure 2 This is a side view along the second horizontal direction of a precisely positioned feeding device provided in Embodiment 1 of the present invention;

[0023] Figure 3 This is a cross-sectional view of a precisely positioned feeding device provided in Embodiment 1 of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of a rotary machine tool provided in Embodiment 2 of the present invention;

[0025] Figure 5 This is a top view of a rotary machine tool provided in Embodiment 2 of the present invention;

[0026] Figure 6 for Figure 4 Enlarged view of part A in the middle.

[0027] The text labels in the image represent:

[0028] 1. Frame; 2. Turntable; 3. Turning mechanism; 4. First conveying mechanism; 5. Second conveying mechanism; 6. First gripping mechanism; 7. Second gripping mechanism; 101. Feeding platform; 102. First guide rail; 103. First slide table; 104. Base; 105. Positioning column; 106. Positioning pin; 107. Sleeve; 108. Connecting part; 109. Elastic element; 110. First drive motor; 111. First rack; 112. First gear; 1051. First column; 1052. Second column; 1053. Variable diameter column; 1081. Mounting hole. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. This description is merely illustrative and explanatory, and should not be construed as limiting the scope of protection of the present invention in any way. Specifically, the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort should fall within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. 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 process, method, product, or apparatus.

[0031] Example 1

[0032] As mentioned in the background section, to address the problems in the prior art, this embodiment provides a precisely positioned loading device, installed at the loading station of a machine tool, for conveying workpieces with inner circles and positioning holes to the clamping mechanism of the machine tool, including:

[0033] Base 104 is located at the loading station;

[0034] The positioning post 105 is located on the base 104 and extends along the first horizontal direction. It includes a first post 1051, a variable-diameter post 1053 and a second post 1052 integrally connected. The diameter of the first post 1051 is smaller than the inner diameter, and the diameter of the second post 1052 is larger than the inner diameter. The diameter of the end face of the variable-diameter post 1053 near the first post 1051 is the same as the diameter of the first post 1051, and the diameter of the end face of the variable-diameter post 1053 near the second post 1052 is the same as the diameter of the second post 1052.

[0035] Positioning pin 106 is provided on positioning post 105 and can be inserted into positioning hole;

[0036] A drive assembly is located at the loading station and is used to drive the base 104 to move along the first horizontal direction.

[0037] like Figure 2 As shown, the first horizontal direction is Figure 2 The middle direction is parallel to the paper, and the second horizontal direction is... Figure 2In the direction perpendicular to the paper, the workpiece is approximately a ring structure, including a ring portion and a protrusion, with a positioning hole on the protrusion. The base 104 is approximately a cuboid structure, with a positioning post 105 on it. The positioning post 105 is approximately a variable cross-section cylinder. The first post 1051, the variable diameter post 1053, and the second post 1052 are arranged sequentially from the side away from the base 104 to the side closer to the base 104. The diameter of the first post 1051 is slightly smaller than the inner diameter. The variable diameter post 1053 is approximately a frustum structure, with its diameter varying from... The first column 1051 gradually increases in size from one side to the second column 1052. The positioning pin 106 can be inserted into the positioning hole to determine the angle direction of the workpiece. The workpiece is placed on the positioning pin 105, and the driving assembly drives the positioning pin 105 to move along the first horizontal direction towards the clamping mechanism, so that the end face of the workpiece away from the base 104 abuts against the clamping mechanism. When the workpiece moves to the point of engaging with the positioning pin 105, the end face of the workpiece away from the base 104 is completely in contact with the support block of the clamping mechanism, and at the same time, the inner circle of the workpiece is coaxial with the positioning pin 105.

[0038] By setting the positioning post 105, the rigid positioning of the workpiece is achieved based on the cooperation between the variable diameter post 1053 and the workpiece, ensuring that the inner circle of the workpiece is coaxial with the positioning post 105. The angle of the workpiece is determined by a single positioning pin 106. Compared with the traditional method of using a gripper and multiple positioning pins 106, the positioning error generated during the clamping or loosening of the gripper is avoided. At the same time, the workpiece is uniformly positioned by the feeding device, which can avoid the relative error between the positioning pins 106 of multiple fixtures. When the workpiece is changed, only the positioning post 105 and positioning pin 106 of the feeding device need to be replaced, which greatly reduces the complexity of operation.

[0039] In a preferred embodiment, the base 104 is further provided with a sleeve 107, and a connector 108 is slidably fitted inside the sleeve 107 along a first horizontal direction. One end of the connector 108 away from the bottom of the sleeve 107 is connected to a positioning post 105. The bottom of the sleeve 107 is provided with a plurality of elastic elements 109, and the free ends of the plurality of elastic elements 109 extend along the first horizontal direction and abut against the side of the connector 108 away from the positioning post 105.

[0040] like Figure 3As shown, the sleeve 107 is a cylindrical body with one open end. A slide rail is provided on the inner wall of the sleeve 107, and a slider is provided on the connector 108 corresponding to the slide rail. The sliding cooperation between the slide rail and the slider guides the movement of the connector 108 in the sleeve 107, so that it always moves along the first horizontal direction. The elastic element 109 is a spring. In this embodiment, four springs are provided in the sleeve 107. One end of the spring is fixed to the bottom of the sleeve 107, and the other end abuts against the connector 108. By setting the elastic element 109, when the workpiece is fed to the end face away from the base 104 and abuts against the positioning block of the clamping mechanism, the drive assembly drives the base 104 and the sleeve 107 to continue to move a distance closer to the clamping mechanism. The elastic force of the spring makes the workpiece completely fit with the positioning block. At the same time, the compression of the spring can also serve as a standard for the workpiece to move into place, ensuring accurate positioning of the workpiece.

[0041] In a preferred embodiment, the connector 108 has two arc-shaped mounting holes 1081 at one end near the positioning post 105. The positioning pin 106 can rotate relative to the positioning post 105 along the mounting holes, and can also be fixed relative to the positioning post 105 by being threadedly connected to the two mounting holes 1081.

[0042] like Figure 1 As shown, the mounting hole 1081 has a connector 108 near the end of the positioning post 105, which is approximately arc-shaped. The positioning pin 106 is set on the positioning base, which can be inserted into the two mounting holes 1081 and slide along the mounting holes 1081 to adjust the relative angle between the positioning pin 106 and the positioning post 105, thereby adjusting the angular positioning of the workpiece. After adjustment, the positioning pin 106 and the positioning post 105 can be fixed relative to each other by bolts. In this invention, the machine tool is equipped with two feeding devices for processing two workpieces at the same time. By setting the positioning pin 106 with an adjustable mounting angle, the positioning accuracy of the two feeding devices can be calibrated, thereby making them have the same positioning accuracy.

[0043] In a preferred embodiment, a limiting hole is formed on the variable diameter column 1053 along its radial direction, and a limiting member is provided in the limiting hole, with the free end of the limiting member extending out of the limiting hole.

[0044] like Figure 2 As shown, the limiting hole is opened radially along the variable diameter column 1053. A limiting component is fixed inside the limiting hole. One end of the limiting component is approximately hemispherical and extends out from the limiting hole. When the workpiece is fitted onto the positioning column 105, the spherical end of the limiting component can abut against the inner wall of the workpiece. Through the interaction between the limiting component and the workpiece, the workpiece is fixed relative to the positioning column 105, preventing the workpiece from falling off during the loading process.

[0045] In a preferred embodiment, a guide component is also included. The guide component includes a first guide rail 102. Two first guide rails 102 are arranged along a first horizontal direction on the loading station. A first slide table 103 is slidably connected to the two first guide rails 102. A base 104 is provided on the first slide table 103.

[0046] In a preferred embodiment, the loading station is further provided with a first rack 111 extending in a first horizontal direction, and the driving assembly includes a first drive motor 110. The first drive motor 110 is mounted on a first slide table 103, and its drive shaft extends in a vertical direction and is fitted with a first gear 112. The first gear 112 meshes with the first rack 111.

[0047] like Figure 6 As shown, a loading platform 101 is provided at the loading station. Two first guide rails 102 are respectively provided at both ends of the loading platform 101 along the second horizontal direction. The two first guide rails 102 extend along the first horizontal direction and are slidably connected to a first slide table 103. A base 104 and a first drive motor 110 are both mounted on the first slide table 103. In this embodiment, the first slide table 103 is provided with two bases 104, a sleeve 107, a connector 108, and a positioning post 105, allowing it to simultaneously load two workpieces; the two first guide rails 102... A first rack 111 extending along the first horizontal direction is also provided. The drive shaft of the first drive motor 110 extends along the vertical direction and is fitted with a first gear 112. The first gear 112 meshes with the first rack 111. The first drive motor 110 drives the first gear 112 to rotate. The interaction force between the first gear 112 and the first rack 111 causes the first slide table 103 to slide along the first horizontal direction. Thus, the loading device can transport the workpiece to be processed to the clamping mechanism, or transport the processed workpiece to the unloading position.

[0048] Secondly, the present invention provides a rotary machine tool, including a precise positioning feeding device as described in Embodiment 1, and a frame 1. A turntable 2 is rotatably connected to the center of the frame 1. The turntable 2 is driven by a second drive motor. Multiple clamping mechanisms are evenly distributed on the turntable 2. Multiple processing stations and feeding stations are provided on the frame 1 corresponding to the multiple clamping mechanisms. A turning mechanism 3 is provided on the processing station for processing the workpiece.

[0049] like Figure 5As shown, the frame 1 is a regular octagonal frame, and a turntable 2 is rotatably connected to the center of the frame 1. The turntable 2 can be driven by a second drive motor to rotate relative to the frame 1. Clamping stations are evenly distributed on the turntable 2. Each clamping station is equipped with two clamping mechanisms, corresponding to the number of positioning columns 105. Processing windows corresponding to the clamping stations are opened around the turntable 2 on the frame 1. One of the processing windows is equipped with a loading station, and the rest are equipped with processing stations. Each processing station is equipped with two cutting tools, which are used to make holes in the workpiece from the two end faces of the workpiece.

[0050] In a preferred embodiment, the clamping mechanism includes a positioning disk, with multiple positioning disks distributed around the turntable 2. Multiple support blocks are provided on the side of the positioning disk near the positioning post 105. Multiple clamping components are arranged around the positioning disk, with the number of clamping components corresponding to the number of support blocks. Each clamping component has a clamping part and also has a first state and a second state. In the first state, the clamping part abuts against the workpiece, so that the side of the workpiece away from the clamping part is in contact with the multiple support blocks. In the second state, the clamping part releases the restriction on the workpiece.

[0051] like Figure 4 As shown, the positioning disk has a ring-shaped structure and is coaxially arranged with the positioning post 105 for easy cooperation with the positioning post 105. Three support blocks are provided on the end face of the positioning disk near the positioning post 105. The three support blocks are spaced apart and can support the end face of the workpiece away from the base 104. The interval between the three support blocks corresponds to the opening position of the workpiece. Three clamping components are arranged around the positioning disk. The clamping components include support posts extending along the first horizontal direction. Clamping parts are rotatably connected to the support posts. When the positioning post 105 moves the workpiece to the end face of the workpiece away from the base 104 and abuts against the three support blocks, the three clamping parts can rotate to the positions corresponding to the three support blocks, clamping the end face of the workpiece near the base 104 and cooperating with the support blocks to clamp and position the workpiece, i.e., the first state mentioned above. When it is necessary to remove the workpiece from the clamping mechanism, the three clamping parts rotate again until the projection of the three clamping parts and the workpiece in the first horizontal direction is completely non-overlapping. At this time, the clamping mechanism releases the clamping of the workpiece, i.e., the second state mentioned above.

[0052] In a preferred embodiment, the system further includes a first conveying mechanism 4 and a second conveying mechanism 5. The first conveying mechanism 4 and the second conveying mechanism 5 are respectively located on both sides of the loading station along the second horizontal direction, and are both used to convey workpieces along the second horizontal direction, which is perpendicular to the first horizontal direction. A first gripping mechanism 6 is also provided on the frame 1 above the loading station. The first gripping mechanism 6 is used to convey the workpiece from the first conveying mechanism 4 to the positioning column 105, and is also used to convey the workpiece from the positioning column 105 to the second conveying mechanism 5.

[0053] like Figure 5As shown, both the first conveying mechanism 4 and the second conveying mechanism 5 use conveyor belts. The first conveying mechanism 4 is used to transport the workpieces processed in the previous process to the loading station, and the second conveying mechanism 5 is used to transport the workpieces processed in the current process to the next process. The first gripping mechanism 6 includes a second guide rail. Two second guide rails are arranged on the frame 1 along the second horizontal direction and distributed above the processing station along the vertical direction. The two second guide rails are slidably connected to a second slide table. A second rack is also provided between the two second guide rails. A third drive motor is provided on the second slide table. Its drive shaft extends along the first horizontal direction and is fitted with a second gear. The second gear meshes with the second rack. A first lifting assembly is also provided on the second slide table. The lifting end of the first lifting assembly is connected to a first gripper. A tilting cylinder is also provided between the first lifting assembly and the first gripper. In use, the workpiece is moved to the end of its conveying direction by the first conveying mechanism 4. The third drive motor drives the second slide to move above the workpiece along the second horizontal direction. The first lifting component drives the gripper to descend and grab the workpiece. After the gripper is grabbed, the third drive motor drives the second slide to move above the loading station along the second horizontal direction again. The flipping cylinder drives the gripper to flip the workpiece. At the same time, the first lifting component drives the workpiece to move vertically so that it corresponds to the positioning post 105. The first drive motor 110 is started to drive the positioning post 105 to move closer to the gripper so that the positioning post 105 passes through the inner circle of the workpiece and engages with the workpiece. Then the workpiece can be removed from the gripper.

[0054] like Figure 1 As shown, a groove is also provided on the outer periphery of the positioning post 105. The inner contour of the groove matches the outer contour of the gripper, which facilitates the cooperation between the positioning post 105 and the gripper.

[0055] In a preferred embodiment, the first conveying mechanism 4 is further provided with an adjustment mechanism at the end of the conveying direction. The adjustment mechanism is used to drive the workpiece to rotate around the central axis of the inner circle in order to adjust the angle of the workpiece. A second gripping mechanism 7 is also provided on one side of the adjustment mechanism. The second gripping mechanism 7 is used to convey the workpiece from the first conveying mechanism 4 to the adjustment mechanism.

[0056] like Figure 5 As shown, the second gripping mechanism 7 can grip the workpiece from the first conveying mechanism 4 onto the adjusting mechanism. The adjusting mechanism includes a tray for carrying the workpiece and can rotate around its own axis. Multiple photoelectric switches are distributed around the tray. The photoelectric switches are used to detect the position of the workpiece and generate detection signals. The tray can rotate according to the detection signals to adjust the angle and direction of the workpiece, so that the workpiece rotates to a preset position, that is, the protrusion of the workpiece faces away from the frame 1.

[0057] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, and the objective existence of infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A precisely positioned loading device, disposed on a loading station of a rotary machine tool, the rotary machine tool having multiple rotatable machining stations, each machining station having a clamping mechanism for holding a workpiece; the loading device is used to transport a workpiece having an inner circle and a positioning hole to the clamping mechanism of the rotary machine tool, characterized in that, include: A base (104) is provided on the loading station; Positioning post (105), the positioning post (105) is disposed on the base (104) and extends along the first horizontal direction, including a first post (1051), a variable diameter post (1053) and a second post (1052) integrally connected, the diameter of the first post (1051) is smaller than the inner circle diameter, the diameter of the second post (1052) is larger than the inner circle diameter, the diameter of the end face of the variable diameter post (1053) near the first post (1051) is the same as the diameter of the first post (1051), and the diameter of the end face of the variable diameter post (1053) near the second post (1052) is the same as the diameter of the second post (1052); Positioning pin (106), the positioning pin (106) is provided on the positioning post (105) and can be inserted into the positioning hole; A drive assembly is provided on the loading station and is used to drive the base (104) to move along the first horizontal direction; The base (104) is also provided with a sleeve (107), and a connector (108) is slidably fitted inside the sleeve (107) along the first horizontal direction. The end of the connector (108) away from the bottom of the sleeve (107) is connected to the positioning post (105). The bottom of the sleeve (107) is provided with a plurality of elastic elements (109), and the free ends of the plurality of elastic elements (109) all extend along the first horizontal direction and abut against the side of the connector (108) away from the positioning post (105).

2. The precisely positioned feeding device according to claim 1, characterized in that, The connector (108) has two arc-shaped mounting holes (1081) at one end near the positioning post (105). The positioning pin (106) can rotate relative to the positioning post (105) along the mounting holes, and can also be fixed relative to the positioning post (105) by being threaded to the two mounting holes (1081).

3. The precisely positioned feeding device according to claim 1, characterized in that, The variable diameter column (1053) has a limiting hole along its radial direction, and a limiting member is provided in the limiting hole, with the free end of the limiting member extending out of the limiting hole.

4. The precisely positioned feeding device according to claim 1, characterized in that, It also includes a guide assembly, which includes a first guide rail (102), two first guide rails (102) are arranged along the first horizontal direction on the loading station, and a first slide table (103) is slidably connected on the two first guide rails (102), and the base (104) is provided on the first slide table (103).

5. The precisely positioned feeding device according to claim 4, characterized in that, The loading station is also provided with a first rack (111) extending along the first horizontal direction. The driving assembly includes a first drive motor (110), which is mounted on the first slide (103). Its drive shaft extends vertically and is fitted with a first gear (112). The first gear (112) meshes with the first rack (111).

6. A rotary machine tool, characterized in that, The device includes a precisely positioned feeding device as described in any one of claims 1-5, and further includes a frame (1), a turntable (2) rotatably connected to the center of the frame (1), the turntable (2) being driven by a second drive motor, a plurality of clamping mechanisms being evenly distributed on the turntable (2), a plurality of processing stations and a feeding station being provided on the frame (1) corresponding to the plurality of clamping mechanisms, and a turning mechanism (3) being provided on the processing station for processing the workpiece.

7. A rotary machine tool according to claim 6, characterized in that, The clamping mechanism includes a positioning disk, with multiple positioning disks distributed around the circumference of the turntable. Multiple support blocks are provided on the side of each positioning disk near the positioning post. Multiple clamping components are arranged around the positioning disk, with the number of clamping components corresponding to the number of support blocks. Each clamping component has a clamping part and also has a first state and a second state. In the first state, the clamping part abuts against the workpiece, causing the side of the workpiece away from the clamping part to fit against the multiple support blocks. In the second state, the clamping part releases the restriction on the workpiece.

8. A rotary machine tool according to claim 6, characterized in that, It also includes a first conveying mechanism (4) and a second conveying mechanism (5), which are respectively located on both sides of the loading station along the second horizontal direction and are used to convey the workpiece along the second horizontal direction, which is perpendicular to the first horizontal direction; a first gripping mechanism (6) is also provided on the frame (1) above the loading station. The first gripping mechanism (6) is used to convey the workpiece from the first conveying mechanism (4) to the positioning column (105) and to convey the workpiece from the positioning column (105) to the second conveying mechanism (5).

9. A rotary machine tool according to claim 8, characterized in that, The first conveying mechanism (4) is further provided with an adjustment mechanism at the end of the conveying direction. The adjustment mechanism is used to drive the workpiece to rotate around the central axis of the inner circle in order to adjust the angle of the workpiece. The adjustment mechanism is further provided with a second gripping mechanism (7) on one side. The second gripping mechanism (7) is used to convey the workpiece from the first conveying mechanism (4) to the adjustment mechanism.

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