Feeding device capable of achieving accurate positioning and rotary machine tool

Abstract

The invention provides a feeding device capable of accurately positioning 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, is used for conveying a workpiece with an inner circle and a positioning hole, and comprises a base, and the base is 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 that of an inner circle and smaller than that of the second column body, the diameter of one end of the variable-diameter column body is equal to that of the first column body, the diameter of the other end of the variable-diameter column body is equal to that of the second column body, and a positioning pin is arranged on the positioning column; the inner circle and the positioning column are coaxial through mutual cooperation between the variable-diameter column body and the workpiece, the angle of the workpiece is determined through the positioning pin, compared with a traditional feeding and discharging mode, positioning errors in the using process of the clamping jaw are avoided, meanwhile, the feeding device positions the workpiece in a unified mode, relative errors among a plurality of clamps are avoided, and during remodeling, the machining efficiency is greatly improved. And only the positioning column and the positioning pin need to be replaced, so that the operation complexity is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical processing, and in particular to a feeding device and a rotary machine tool capable of accurate positioning. Background Art

[0002] During traditional lathe processing, clamps are usually used for loading. The clamps are composed of multiple clamping parts that can move synchronously. The workpiece is clamped by the multiple clamping parts simultaneously resting against the workpiece. In the process of repeatedly moving the clamping parts to clamp or release the workpiece, inevitable errors will occur, which will affect the positioning accuracy of the workpiece. A fixture is provided corresponding to the clamp, and a plurality of locating pins are provided on the fixture. Positioning is achieved by correspondingly cooperating with the locating holes on the workpiece. With the development of technology, integrated rotary lathes have been derived. The rotary lathe can realize multi-process processing of a single workpiece and simultaneous processing of multiple workpieces. Therefore, it has more processing stations, and a fixture is set corresponding to each processing station. When loading, the clamps are required to place the workpieces on multiple clamps in turn and cooperate with the locating pins. This requires that relative errors be avoided between the locating pins of multiple clamps, and the rotation accuracy of the lathe must be ensured. When the workpiece is changed, all the locating pins need to be replaced accordingly, which greatly reduces the efficiency. Summary of the invention

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

[0004] In the first aspect, the purpose of the present invention is to provide a feeding device capable of accurate positioning in view of the above problems, which is arranged on a feeding station of a machine tool and is used to transport a workpiece having an inner circle and a positioning hole to a clamping mechanism of the machine tool, comprising: A base, the base being arranged on the loading station; A positioning column, the positioning column is arranged on the base and extends along the first horizontal direction, including a first cylinder, a variable diameter cylinder and a second cylinder connected in one piece, the diameter of the first cylinder is smaller than the inner circle diameter, the diameter of the second cylinder is larger than the inner circle diameter, the diameter of the end face of the variable diameter cylinder close to one end of the first cylinder is the same as the diameter of the first cylinder, and the diameter of the end face of the variable diameter cylinder close to one end of the second cylinder is the same as the diameter of the second cylinder; A positioning pin, which is arranged on the positioning column and can be inserted and matched with the positioning hole; A driving assembly is disposed on the loading station and is used to drive the base to move along the first horizontal direction.

[0005] According to the technical solution provided by certain embodiments of the present invention, a sleeve is also provided on the base, and a connecting piece is slidably fitted in the sleeve along the first horizontal direction, and the end of the connecting piece away from the bottom of the sleeve is connected to the positioning column, and a plurality of elastic pieces are provided at the bottom of the sleeve, and the free ends of the plurality of elastic pieces all extend along the first horizontal direction and abut against the side of the connecting piece away from the positioning column.

[0006] According to the technical solution provided in certain embodiments of the present invention, the connecting member has two arc-shaped mounting holes at one end close to the positioning column, and the positioning pin can rotate along the mounting holes relative to the positioning column, and can also be fixed relative to the positioning column by being threadedly connected to the two mounting holes.

[0007] According to the technical solutions provided in some embodiments of the present invention, a limiting hole is provided on the variable diameter cylinder along its radial direction, a limiting member is provided in the limiting hole, and a free end of the limiting member extends out of the limiting hole.

[0008] According to the technical solution provided in certain embodiments of the present invention, it also includes a guide assembly, which includes a first guide rail, two of the first guide rails are arranged on the loading station along the first horizontal direction, and a first slide is slidably connected to the two first guide rails, and the base is provided on the first slide.

[0009] According to the technical solution provided in certain embodiments of the present invention, the loading station is also provided with a first rack extending along the first horizontal direction, and the driving assembly includes a first driving motor, which is arranged on the first slide, and its driving shaft extends in the vertical direction and is sleeved with a first gear, and the first gear is meshed with the first rack.

[0010] In the second aspect, the present invention also provides a rotary machine tool, including a loading device that can be precisely positioned as described above, and also including a frame, a turntable is rotatably connected to the center of the frame, the turntable is driven by a second drive motor, and a plurality of the clamping mechanisms are evenly distributed on the turntable. The frame is provided with a plurality of processing stations and the loading station corresponding to the plurality of the clamping mechanisms, and the processing station is provided with a turning mechanism for processing the workpiece.

[0011] According to the technical solution provided by certain embodiments of the present invention, the clamping mechanism includes a positioning disk, and a plurality of the positioning disks are distributed around the turntable. A plurality of support blocks are provided on a side of the positioning disk close to the positioning column, and a plurality of clamping assemblies are provided around the positioning disk. The number of the clamping assemblies corresponds to the number of the support blocks. The clamping assembly has a clamping portion, and the clamping assembly also has a first state and a second state. When in the first state, the clamping portion abuts against the workpiece to make the workpiece fit together with the plurality of support blocks on the side away from the clamping portion; when in the second state, the clamping portion releases the restriction on the workpiece.

[0012] According to the technical solution provided in certain embodiments of the present invention, it also includes a first conveying mechanism and a second conveying mechanism, the first conveying mechanism and the second conveying mechanism are respectively arranged 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, and the second horizontal direction is perpendicular to the first horizontal direction; a first grasping mechanism is also provided on the frame above the loading station, the first grasping 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.

[0013] According to the technical solution provided by certain embodiments of the present invention, an adjustment mechanism is also provided at the end of the conveying direction of the first conveying mechanism, and the adjustment mechanism is used to drive the workpiece to rotate around the central axis of the inner circle to adjust the angle of the workpiece; a second grasping mechanism is also provided on one side of the adjustment mechanism, and the second grasping mechanism is used to convey the workpiece from the first conveying mechanism to the adjustment mechanism.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the present invention provides a feeding device that can be precisely positioned, which is arranged on a feeding station of a machine tool and is used to transport a workpiece with an inner circle and a positioning hole to a clamping mechanism of the machine tool, and comprises a base and a driving assembly, and the driving assembly can drive the base to move along a first horizontal direction; a positioning column extending along the first horizontal direction is provided on the base, and the positioning column comprises a first cylinder, a variable diameter cylinder and a second cylinder that are integrally connected, the diameter of the first cylinder is smaller than the diameter of the inner circle, the diameter of the second cylinder is larger than the diameter of the inner circle, the end face diameter of the variable diameter cylinder close to one end of the first cylinder is the same as the diameter of the first cylinder, and the end face diameter close to one end of the second cylinder is the same as the diameter of the first cylinder. The second cylinder has the same diameter, and a locating pin which can be inserted into the locating hole is also provided on the locating column. By setting the locating column, the rigid positioning of the workpiece is achieved according to the cooperation between the variable diameter cylinder and the workpiece, ensuring that the inner circle of the workpiece is coaxially arranged with the locating column. A single locating pin is used to determine the angle of the workpiece. Compared with the traditional method of using a clamping jaw in conjunction with multiple locating pins, the positioning error generated during the clamping or loosening of the clamping jaw is avoided. At the same time, the workpiece is uniformly positioned using a loading device, which can avoid the relative error between the locating pins of multiple fixtures. When the workpiece is changed, only the locating column and the locating pin of the loading device need to be replaced accordingly, which greatly reduces the complexity of the operation.

[0015] It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in the present invention does not imply that all features and advantages can be realized in any single embodiment. On the contrary, it is understood that the description of features or beneficial effects means that specific technical features, technical solutions or beneficial effects are included in at least one embodiment. Therefore, the description of technical features, technical solutions or beneficial effects in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and beneficial effects described in the present embodiment can also be combined in any appropriate manner. Those skilled in the art will understand that the embodiment can be realized without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and beneficial effects can also be identified in specific embodiments that do not embody all embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the structure of a feeding device capable of accurate positioning provided in Example 1 of the present invention; Figure 2A side view of a feeding device capable of accurate positioning provided in Example 1 of the present invention along a second horizontal direction; Figure 3 A cross-sectional view of a feeding device capable of precise positioning provided in Example 1 of the present invention; Figure 4 A schematic structural diagram of a rotary machine tool provided in Example 2 of the present invention; Figure 5 A top view of a rotary machine tool provided in Example 2 of the present invention; Figure 6 for Figure 4 Enlarged view of part A.

[0018] The text annotations in the figure represent: 1. Frame; 2. Turntable; 3. Turning mechanism; 4. First conveying mechanism; 5. Second conveying mechanism; 6. First grabbing mechanism; 7. Second grabbing mechanism; 101. Loading platform; 102. First guide rail; 103. First slide; 104. Base; 105. Positioning column; 106. Positioning pin; 107. Sleeve; 108. Connecting piece; 109. Elastic piece; 110. First driving motor; 111. First rack; 112. First gear; 1051. First column; 1052. Second column; 1053. Variable diameter column; 1081. Mounting hole. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention. Specifically, the described embodiments are only embodiments of a part of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0020] It should be noted that similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "including" and "having" and any variations thereof 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.

[0021] Example 1 As mentioned in the background technology, in view of the problems in the prior art, this embodiment provides a feeding device that can be accurately positioned, which is arranged on a feeding station of a machine tool and is used to transport a workpiece having an inner circle and a positioning hole to a clamping mechanism of the machine tool, comprising: Base 104, base 104 is arranged on the loading station; The positioning column 105 is disposed on the base 104 and extends along the first horizontal direction, and includes a first column 1051, a diameter-changing column 1053 and a second column 1052 which are connected in one piece. The diameter of the first column 1051 is smaller than the inner diameter, and the diameter of the second column 1052 is larger than the inner diameter. The diameter of the end face of the diameter-changing column 1053 close to the first column 1051 is the same as the diameter of the first column 1051, and the diameter of the end face of the diameter-changing column 1053 close to the second column 1052 is the same as the diameter of the second column 1052; A positioning pin 106, which is disposed on the positioning column 105 and can be inserted and matched with the positioning hole; The driving assembly is arranged on the loading station and is used to drive the base 104 to move along the first horizontal direction.

[0022] like Figure 2 As shown, the first horizontal direction is Figure 2 The direction parallel to the paper surface, the second horizontal direction is Figure 2 In the direction perpendicular to the paper surface, the workpiece is similar to an annular structure, including an annular portion and a raised portion, and a positioning hole is opened on the raised portion; the base 104 is similar to a rectangular parallelepiped structure, and a positioning column 105 is provided on the base 104. The positioning column 105 is similar to a variable-section cylinder. The first column 1051, the variable-diameter column 1053, and the second column 1052 are sequentially arranged from the side away from the base 104 to the side close to the base 104. The diameter of the first column 1051 is slightly smaller than the inner diameter. The variable-diameter column 1053 is similar to a truncated cone structure, and its diameter is The side of the first cylinder 1051 gradually increases toward the side of the second cylinder 1052, and the positioning pin 106 can be inserted in the positioning hole to determine the angular direction of the workpiece; the workpiece is put on the positioning column 105, and the driving assembly drives the positioning column 105 to move along the first horizontal direction toward the side of the clamping mechanism, so that the end face of the workpiece away from the base 104 is against the clamping mechanism. When the workpiece moves to engage with the positioning column 105, the end face of the workpiece away from the base 104 is completely fitted with the support block of the clamping mechanism, and the inner circle of the workpiece is coaxial with the positioning column 105.

[0023] By setting the positioning column 105, the rigid positioning of the workpiece is achieved according to the cooperation between the variable diameter cylinder 1053 and the workpiece, ensuring that the inner circle of the workpiece is coaxially arranged with the positioning column 105, and using a single positioning pin 106 to determine the angle of the workpiece, compared with the traditional method of using a clamping jaw in cooperation with multiple positioning pins 106, the positioning error generated during the clamping or loosening of the clamping jaw is avoided. At the same time, the workpiece is uniformly positioned using a loading device, which can avoid the relative error between the positioning pins 106 of multiple fixtures. When the workpiece is changed, only the positioning column 105 and the positioning pin 106 of the loading device need to be replaced accordingly, which greatly reduces the complexity of the operation.

[0024] In a preferred embodiment, a sleeve 107 is further provided on the base 104, and a connecting member 108 is slidably fitted in the sleeve 107 along the first horizontal direction. The end of the connecting member 108 away from the bottom of the sleeve 107 is connected to the positioning column 105, and a plurality of elastic members 109 are provided at the bottom of the sleeve 107. The free ends of the plurality of elastic members 109 extend along the first horizontal direction and abut against the side of the connecting member 108 away from the positioning column 105.

[0025] like Figure 3 As shown, the sleeve 107 is a cylindrical body with an opening at one end, a slide rail is provided on the inner wall of the sleeve 107, and a slider is provided on the connecting member 108 corresponding to the slide rail, and the movement of the connecting member 108 in the sleeve 107 is guided by the sliding fit between the slide rail and the slider, so that it always moves along the first horizontal direction; the elastic member 109 adopts 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 on the connecting member 108; by providing the elastic member 109, when the end face of the workpiece away from the base 104 abuts on the positioning block of the clamping mechanism, the driving assembly drives the base 104 and the sleeve 107 to continue to move a distance toward the side close to the clamping mechanism, and the elastic force of the spring is relied on to make the workpiece and the positioning block fully fit, and at the same time, the compression of the spring can also be used as a standard for moving the workpiece into place, thereby ensuring accurate positioning of the workpiece.

[0026] In a preferred embodiment, the connector 108 has two arc-shaped mounting holes 1081 at one end close to the positioning column 105 , and the positioning pin 106 can rotate along the mounting holes relative to the positioning column 105 , and can also be fixed relative to the positioning column 105 by being threadedly connected to the two mounting holes 1081 .

[0027] like Figure 1As shown, the mounting hole 1081 is provided with a connecting piece 108 at one end close to the positioning column 105, which is approximately an arc-shaped structure. The positioning pin 106 is arranged on the positioning base, and the positioning base 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 column 105, thereby adjusting the angular positioning of the workpiece. After the adjustment is completed, the positioning pin 106 and the positioning column 105 can be relatively fixed by bolts; in the present invention, the machine tool is also provided with two feeding devices for processing two workpieces at the same time. By providing the positioning pin 106 with adjustable mounting angle, the positioning accuracy of the two feeding devices can be calibrated, thereby making the two have the same positioning accuracy.

[0028] In a preferred embodiment, a limiting hole is provided on the variable diameter cylinder 1053 along its radial direction, a limiting member is provided in the limiting hole, and a free end of the limiting member extends out of the limiting hole.

[0029] like Figure 2 As shown, the limiting hole is opened along the radial direction of the variable diameter cylinder 1053, and a limiting member is fixed in the limiting hole. One end of the limiting member is approximately a hemispherical structure and extends out from the limiting hole. When the workpiece is sleeved on the positioning column 105, the spherical end of the limiting member can abut against the inner wall of the workpiece. Through the interaction between the limiting member and the workpiece, the workpiece and the positioning column 105 are relatively fixed to prevent the workpiece from falling during the loading process.

[0030] In a preferred embodiment, a guide assembly is also included, which includes a first guide rail 102. Two first guide rails 102 are arranged on the loading station along a first horizontal direction. A first slide 103 is slidably connected to the two first guide rails 102. A base 104 is provided on the first slide 103.

[0031] In a preferred embodiment, the loading station is also provided with a first rack 111 extending along the first horizontal direction, and the driving assembly includes a first driving motor 110. The first driving motor 110 is arranged on the first slide 103, and its driving shaft extends in the vertical direction and is sleeved with a first gear 112. The first gear 112 and the first rack 111 are meshed with each other.

[0032] like Figure 6As shown, a loading platform 101 is provided at the loading station, and 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 with a first slide 103. A base 104 and a first drive motor 110 are both provided on the first slide 103. In this embodiment, two bases 104, a sleeve 107, a connecting piece 108 and a positioning column 105 are provided on the first slide 103, and two workpieces can be carried for loading at the same time; the two first guide rails 102 A first rack 111 extending along the first horizontal direction is also provided therebetween. The driving shaft of the first driving motor 110 extends along the vertical direction and is sleeved with a first gear 112. The first gear 112 and the first rack 111 are meshed with each other. The first driving 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 103 to slide along the first horizontal direction, so that the loading device can transport the workpiece to be processed to the clamping mechanism, or transport the processed workpiece to the unloading position.

[0033] In the second aspect, the present invention provides a rotary machine tool, including a precisely positioned loading device as described in Example 1, and also including a frame 1, the frame 1 is centrally rotatably connected to a turntable 2, the turntable 2 is driven by a second drive motor, and a plurality of clamping mechanisms are evenly distributed on the turntable 2. A plurality of processing stations and loading stations are provided on the frame 1 corresponding to the plurality of clamping mechanisms, and a turning mechanism 3 is provided on the processing station for processing the workpiece.

[0034] like Figure 5 As shown, the frame 1 is a regular octagonal frame, and the frame 1 is rotatably connected to a turntable 2 at the center thereof. The turntable 2 can be driven by a second drive motor to rotate relative to the frame 1, and clamping stations are evenly distributed on the turntable 2. Each clamping station is provided 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 provided with a loading station, and the rest are provided with processing stations, and each processing station is provided with two turning tools, which are respectively used to open holes in the workpiece from the two end surfaces of the workpiece.

[0035] In a preferred embodiment, the clamping mechanism includes a positioning disk, and multiple positioning disks are distributed around the turntable 2. Multiple support blocks are provided on the side of the positioning disk close to the positioning column 105, and multiple clamping assemblies are provided around the positioning disk. The number of clamping assemblies corresponds to the number of support blocks. The clamping assembly has a clamping portion, and the clamping assembly also has a first state and a second state. When in the first state, the clamping portion abuts against the workpiece so that the workpiece is in contact with the multiple support blocks on the side away from the clamping portion; when in the second state, the clamping portion releases the restriction on the workpiece.

[0036] like Figure 4As shown, the positioning disk is an annular structure, which is coaxially arranged with the positioning column 105, so as to cooperate with the positioning column 105. The end face of the positioning disk close to the positioning column 105 is provided with three support blocks, and the three support blocks are arranged at intervals to support the end face of the workpiece away from the base 104. The intervals between the three support blocks correspond to the opening position of the workpiece; three clamping assemblies are arranged around the positioning disk, and the clamping assemblies include support columns extending along a first horizontal direction, and a clamping part is rotatably connected to the support column. When the positioning column 105 drives the workpiece to move to the end face of the workpiece away from the base 104 and abuts against the three support blocks, the three clamping parts can be rotated to positions corresponding to the three support blocks, clamping the end face of the workpiece close to the base 104, and cooperating with the support blocks to clamp and position the workpiece, that is, the above-mentioned first state; when the workpiece needs to be removed from the clamping mechanism, the three clamping parts rotate again until the three clamping parts and the projection of the workpiece in the first horizontal direction are completely non-coincident, at which time the clamping mechanism releases the clamping of the workpiece, that is, the above-mentioned second state.

[0037] In a preferred embodiment, it also 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 arranged 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. The second horizontal direction 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.

[0038] 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 convey the workpiece processed in the previous process to the loading station, and the second conveying mechanism 5 is used to convey the workpiece processed in the current process to the next process; the first grasping mechanism 6 includes a second guide rail, and the 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 with a second slide, and a second rack is also arranged between the two second guide rails. A third driving motor is arranged on the second slide, and its driving shaft extends along the first horizontal direction and is sleeved with a second gear. The second gear and the second rack are meshed with each other. A first lifting assembly is also arranged on the second slide, and the lifting end of the first lifting assembly is connected with a first clamping claw, and a flip cylinder is also arranged between the first lifting assembly and the first clamping claw. When in use, the workpiece is driven by the first conveying mechanism 4 to move to the end of its conveying direction, the third drive motor drives the second slide to move along the second horizontal direction to above the workpiece, the first lifting assembly drives the clamp to descend to grab the workpiece, and after the grabbing is completed, the third drive motor drives the second slide to move along the second horizontal direction to above the loading station again, the flipping cylinder drives the clamp to flip the workpiece, and at the same time the first lifting assembly drives the workpiece to move in the vertical direction so that it corresponds to the positioning column 105; start the first drive motor 110 to drive the positioning column 105 to move toward the side close to the clamp, so that the positioning column 105 passes through the inner circle of the workpiece and is clamped with the workpiece, and then the workpiece can be removed from the clamp.

[0039] like Figure 1 As shown, a groove is also provided on the outer periphery of the positioning post 105 , and the inner contour of the groove matches the outer contour of the clamping jaw, so as to facilitate the mutual cooperation between the positioning post 105 and the clamping jaw.

[0040] In a preferred embodiment, an adjustment mechanism is also provided at the end of the conveying direction of the first conveying mechanism 4, and the adjustment mechanism is used to drive the workpiece to rotate around the central axis of the inner circle to adjust the angle of the workpiece; a second grasping mechanism 7 is also provided on one side of the adjustment mechanism, and the second grasping mechanism 7 is used to convey the workpiece from the first conveying mechanism 4 to the adjustment mechanism.

[0041] like Figure 5 As shown, the second grabbing mechanism 7 can grab the workpiece from the first conveying mechanism 4 to the adjusting mechanism. The adjusting mechanism includes a pallet, which is used to carry the workpiece and can rotate around its own axis. A plurality of photoelectric switches are distributed around the pallet. The photoelectric switches are used to detect the position of the workpiece and generate a detection signal. The pallet can rotate according to the detection signal to adjust the angular direction of the workpiece so that the workpiece is rotated to a preset position, that is, the raised portion of the workpiece faces the side away from the frame 1.

[0042] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core ideas. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements, modifications or changes can be made, and the above technical features can be combined in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A feeding device capable of accurate positioning, arranged on a feeding station of a machine tool, for conveying a workpiece having an inner circle and a positioning hole to a clamping mechanism of the machine tool, characterized in that: include: A base (104), the base (104) being arranged on the loading station; a positioning column (105), the positioning column (105) being arranged on the base (104) and extending along a first horizontal direction, comprising a first column (1051), a diameter-changing column (1053) and a second column (1052) connected in one piece, the diameter of the first column (1051) being smaller than the inner circle diameter, the diameter of the second column (1052) being larger than the inner circle diameter, the diameter of an end face of the diameter-changing column (1053) close to one end of the first column (1051) being the same as the diameter of the first column (1051), and the diameter of an end face of the diameter-changing column (1053) close to one end of the second column (1052) being the same as the diameter of the second column (1052); A positioning pin (106), the positioning pin (106) being arranged on the positioning column (105) and being insertably matched with the positioning hole; A drive assembly, the drive assembly being arranged on the loading station and being used for driving the base (104) to move along the first horizontal direction.

2. A feeding device capable of accurate positioning according to claim 1, characterized in that: The base (104) is also provided with a sleeve (107), a connecting piece (108) is slidably engaged in the sleeve (107) along the first horizontal direction, one end of the connecting piece (108) away from the bottom of the sleeve (107) is connected to the positioning column (105), and a plurality of elastic pieces (109) are provided at the bottom of the sleeve (107), and the free ends of the plurality of elastic pieces (109) all extend along the first horizontal direction and abut against a side of the connecting piece (108) away from the positioning column (105).

3. A feeding device capable of accurate positioning according to claim 2, characterized in that: The connecting member (108) is provided with two arc-shaped mounting holes (1081) at one end close to the positioning column (105); the positioning pin (106) can rotate along the mounting holes relative to the positioning column (105), and can also be fixed relative to the positioning column (105) by being threadedly connected to the two mounting holes (1081).

4. The feeding device capable of accurate positioning according to claim 1, characterized in that: A limiting hole is provided on the variable diameter cylinder (1053) along its radial direction, a limiting member is provided in the limiting hole, and a free end of the limiting member extends out of the limiting hole.

5. The feeding device capable of accurate positioning according to claim 2, characterized in that: It also includes a guide assembly, the guide assembly includes a first guide rail (102), two of the first guide rails (102) are arranged on the loading station along the first horizontal direction, a first slide (103) is slidably connected to the two first guide rails (102), and the base (104) is provided on the first slide (103).

6. The feeding device capable of accurate positioning according to claim 5, characterized in that: The loading station is also provided with a first rack (111) extending along the first horizontal direction. The driving assembly comprises a first driving motor (110). The first driving motor (110) is arranged on the first slide (103). Its driving shaft extends along the vertical direction and is sleeved with a first gear (112). The first gear (112) and the first rack (111) are meshed with each other.

7. A rotary machine tool, characterized in that: It comprises a precisely positioned loading device as claimed in any one of claims 1 to 6, and also comprises a frame (1), wherein the frame (1) is centrally rotatably connected to a turntable (2), wherein the turntable (2) is driven by a second drive motor, and a plurality of the clamping mechanisms are evenly distributed on the turntable (2), and a plurality of processing stations and the loading station are provided on the frame (1) corresponding to the plurality of the clamping mechanisms, and a turning mechanism (3) is provided on the processing station for processing the workpiece.

8. A rotary machine tool according to claim 7, characterized in that: The clamping mechanism includes a positioning disk, and a plurality of the positioning disks are distributed around the turntable. A plurality of support blocks are provided on a side of the positioning disk close to the positioning column. A plurality of clamping assemblies are provided around the positioning disk, and the number of the clamping assemblies corresponds to the number of the support blocks. The clamping assembly has a clamping portion, and the clamping assembly also has a first state and a second state. When in the first state, the clamping portion abuts against the workpiece to make the workpiece fit with the plurality of support blocks on the side away from the clamping portion; when in the second state, the clamping portion releases the restriction on the workpiece.

9. The rotary machine tool according to claim 7, characterized in that: The machine frame (1) further comprises a first conveying mechanism (4) and a second conveying mechanism (5), wherein the first conveying mechanism (4) and the second conveying mechanism (5) are respectively arranged on both sides of the loading station along a second horizontal direction, and are both used to convey the workpiece along the second horizontal direction, wherein the second horizontal direction is perpendicular to the first horizontal direction; a first gripping mechanism (6) is also arranged on the frame (1) above the loading station, and 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).

10. A rotary machine tool according to claim 9, characterized in that: An adjustment mechanism is also provided at the end of the first conveying mechanism (4) in the conveying direction, and the adjustment mechanism is used to drive the workpiece to rotate around the central axis of the inner circle to adjust the angle of the workpiece; a second gripping mechanism (7) is also provided on one side of the adjustment mechanism, and the second gripping mechanism (7) is used to convey the workpiece from the first conveying mechanism (4) to the adjustment mechanism.

Images