A high-precision automatic position-changing device for shaft workpieces

Abstract

The present invention provides a high-precision automatic displacement device for shaft-type workpieces, which belongs to the field of workpiece displacement. The device includes a rotation displacement mechanism, a lifting mechanism, a product base support assembly, a secondary lateral adjustment mechanism, a secondary longitudinal adjustment mechanism and a shaft end centering mechanism. The product support platform is arranged on the product base support assembly, and a product positioning mechanism and a product clamping mechanism are arranged thereon for positioning and clamping. The rotation displacement mechanism can realize the rotation displacement of the workpiece to reach the required angle for assembly or detection; the lifting mechanism is used to drive the product base support assembly to rise and fall to the rotation displacement height; the secondary lateral adjustment mechanism and the secondary longitudinal adjustment mechanism are used to perform secondary fine-tuning of the position of the shaft-type workpiece by compound action after the rotation displacement detection of the shaft-type workpiece; the shaft end centering mechanism is used for universal support during the secondary fine-tuning. The present invention can automatically realize the displacement of shaft-type workpieces, eliminate the need for personnel auxiliary adjustment, and improve the success rate and qualified rate of automatic assembly after the displacement of the workpiece.

Description

Technical Field

[0001] The present invention relates to the technical field of workpiece position transformation, and particularly to a high-precision automatic position transformation device for shaft workpieces. Background Art

[0002] In the process of automated production, for medium-sized shaft workpieces with a diameter ≥ 200 mm, a length ≥ 2500 mm, and a weight ≥ 300 kg, after being conveyed to the corresponding position, they need to be in a vertical-to-ground axis posture for high-precision inspection and assembly.

[0003] Currently, during the conveying and running process of shaft workpieces, when the workpiece is adjusted from a horizontal state to a vertical or inclined state, due to the limitations of existing mechanisms, the perpendicularity requirement after the product position transformation cannot be guaranteed, resulting in unqualified inspections, low assembly qualification rates, and the need for manual assistance to complete the adjustment after position transformation.

[0004] In view of the above reasons, the present invention proposes a high-precision automatic position transformation device for shaft workpieces to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-precision automatic position transformation device for shaft workpieces, which can solve the problem that the mechanism accuracy fails to meet the assembly and inspection requirements when the shaft workpiece is transformed from a horizontal posture to a vertical or inclined angle posture position.

[0006] The present invention provides a high-precision automatic position transformation device for shaft workpieces, including:

[0007] A rotary position transformation mechanism, including a first driving component and a rotary transmission component. The rotary transmission component includes a flexible indexing turntable and a connecting transition flange. The flexible indexing turntable is fixedly connected to the product base support component through the connecting transition flange, and then controls the rotation of the product base support component through the flexible indexing turntable to achieve the rotary position transformation of the shaft workpiece and reach the angle at the position required for assembly or inspection.

[0008] A product support table is arranged on the product base support component, and a product positioning mechanism and a product clamping mechanism are arranged on the product support table for positioning and clamping the shaft workpiece.

[0009] A lifting mechanism, including a second driving component, a lifting transmission component, a sliding plate component, and a frame component. The second driving component and the lifting transmission component are arranged on the frame component. The sliding plate component can be lifted relative to the frame component under the action of the second driving component and the lifting transmission component. The rotary position transformation mechanism is fixedly connected to the sliding plate component.

[0010] A secondary lateral adjustment mechanism is used to perform secondary fine adjustment on the position of the shaft workpiece in the horizontal direction after the shaft workpiece is rotated and positioned and inspected.

[0011] A secondary longitudinal adjustment mechanism for performing secondary fine adjustment of the position of a shaft workpiece in the longitudinal direction after the shaft workpiece rotates and is displaced and detected.

[0012] A shaft end centering mechanism for providing universal support to the shaft workpiece during secondary fine adjustment after the shaft workpiece rotates and is displaced and detected.

[0013] Preferably, both the first drive assembly and the second drive assembly include a servo motor, a planetary reducer, and a coupling.

[0014] Preferably, the lifting transmission assembly includes a first ball screw nut and a set of linear slide rails. The first ball screw nut can be driven under the action of the second drive assembly, and the slide plate assembly can slide up and down relative to the linear slide rails along with the first ball screw nut, thereby driving the rotation and displacement mechanism and the shaft workpiece to lift.

[0015] Preferably, the frame assembly includes a frame main body and a mounting base. The mounting base is anchored to the ground. The first ball screw nut and the linear slide rails are arranged on one side of the frame main body. The second drive assembly is fixed to the top of the frame main body. The first ball screw nut is in transmission cooperation connection with the second drive assembly.

[0016] Preferably, the secondary lateral adjustment mechanism includes a third drive assembly, a lateral transmission assembly, a lateral adjustment actuator, and a universal link. Among them, the base of the lateral adjustment actuator is arranged on the product base support assembly. The third drive assembly includes a servo motor, a planetary reducer, a coupling, and a connecting flange. The lateral transmission assembly includes a second ball screw nut and two sets of lateral linear guide sliders. The lateral adjustment actuator includes a lateral moving slide plate. The lateral moving slide plate is adaptively installed with the second ball screw nut and the lateral linear guide sliders and can move laterally along the product base support assembly therewith. The outer side of the lateral moving slide plate is movably connected to one end of the product support table through the universal link and can drive the product support table to move laterally, thereby performing fine adjustment of the lateral position of the shaft workpiece.

[0017] Preferably, the secondary longitudinal adjustment mechanism includes a fourth drive assembly, a longitudinal transmission assembly, and a longitudinal adjustment actuator. The fourth drive assembly includes a servo motor, a planetary reducer, a coupling, and a connecting flange. The longitudinal transmission assembly includes a third ball screw nut and two sets of longitudinal linear guide sliders. The longitudinal adjustment actuator includes a longitudinal moving slide plate and a universal guiding block. The universal guiding block is disposed on the surface of the longitudinal moving slide plate. The longitudinal moving slide plate is disposed at the bottom of the product support table, and the longitudinal moving slide plate is adaptively installed with the third ball screw nut and the longitudinal linear guide sliders, and can drive the product support table to move longitudinally, so as to finely adjust the longitudinal position of the shaft workpiece.

[0018] Preferably, the shaft end centering mechanism includes a fixing plate, a rotating shaft, a spherical roller bearing, and a bearing seat. The fixing plate is installed on the end of the product support table away from the secondary lateral adjustment mechanism through a connecting flange. The bearing seat is fixedly connected to the fixing plate. The spherical roller bearing is installed in the bearing seat. The rotating shaft is rotatably connected to the spherical roller bearing and is used for positioning and universal support of one end of the shaft workpiece during the secondary fine adjustment of the shaft workpiece.

[0019] Preferably, it further includes a product precision detection mechanism fixed on the frame assembly. The product precision detection mechanism includes a fixed base, a telescopic module, a distance measuring sensor, and a transfer module. The telescopic module includes a linear guide slider assembly, a cylinder, and a connecting block. The transfer module includes a servo motor, a linear module composed of a fourth ball screw nut and a guide rail, and a sensor fixing block. The telescopic module is fixedly connected to the transfer module through the connecting block. The distance measuring sensor is fixed on the sensor fixing block. The movement directions of the telescopic module and the transfer module are perpendicular to each other and are used to adjust the position of the distance measuring sensor, so as to detect the precision of the shaft workpiece.

[0020] Preferably, the product positioning mechanism includes two positioning blocks with positioning inclined surfaces.

[0021] Preferably, the product clamping mechanism includes a plurality of detachable fastening rings disposed on the product support table.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The shaft workpiece is positioned and fixed on the product base support assembly and the product support table through the product positioning mechanism and the product clamping mechanism. Then, the lifting mechanism operates to raise the product base support assembly and the product support table to the rotation position. The product support table acts through the rotation displacement mechanism, and the shaft workpiece is adjusted from the horizontal state to the vertical or inclined angle state. Then, the product end face is detected through the detection sensor, etc., and the product position error is measured. Then, under the support of the shaft end centering mechanism, the position of the shaft workpiece is finely adjusted through the combined actions of the secondary longitudinal adjustment mechanism and the secondary transverse adjustment mechanism, and the product is finely adjusted to the final required position, solving the problem that the mechanism accuracy cannot meet the assembly and detection requirements when the shaft workpiece changes from the horizontal posture to the vertical or inclined angle posture;

[0024] 2. Through the device of the present invention, the displacement of the shaft workpiece can be automatically realized, the process of personnel-assisted adjustment can be omitted, and the success rate of automatic assembly and the qualification rate of automatic detection of shaft parts after posture displacement are improved;

[0025] 3. The accuracy of the shaft workpiece changing from the horizontal state to the vertical state is significantly improved, and the displacement accuracy can reach ±0.001° through the device of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic diagram of the overall structure of the high-precision automatic displacement device for shaft workpieces of the present invention;

[0028] Figure 2 It is a schematic diagram of the specific structure of the rotation displacement mechanism in the present invention;

[0029] Figure 3 It is a schematic diagram of the specific structure of the lifting mechanism in the present invention;

[0030] Figure 4 It is a schematic diagram of the specific structure of the product base support assembly in the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the product support table and the positioning and clamping components in the present invention;

[0032] Figure 6 It is a schematic diagram of the specific structure of the secondary transverse adjustment mechanism in the present invention;

[0033] Figure 7This is a schematic structural diagram of the secondary longitudinal adjustment mechanism in the present invention;

[0034] Figure 8 This is a schematic structural diagram of the shaft end centering mechanism in the present invention;

[0035] Figure 9 This is a schematic structural diagram of the product precision detection mechanism in the present invention;

[0036] Explanation of reference numerals:

[0037] 1: Rotary displacement mechanism; 101: First drive assembly; 102: Flexible indexing turntable; 2: Lifting mechanism; 201: Second drive assembly; 202: Lifting transmission assembly; 2021: First ball screw nut; 2022: Linear slide rail; 203: Slide plate assembly; 204: Frame assembly; 2041: Frame body; 2042: Mounting base; 3: Product base support assembly; 4: Secondary lateral adjustment mechanism; 401: Third drive assembly; 402: Lateral transmission assembly; 4021: Second ball screw nut; 4022: Lateral linear guide slider; 403: Lateral adjustment actuator; 404: Universal link; 5: Secondary longitudinal adjustment mechanism; 501: Fourth drive assembly; 502: Longitudinal transmission assembly; 5021: Third ball screw nut; 5022: Longitudinal linear guide slider; 503: Longitudinal adjustment actuator; 5031: Longitudinal moving slide plate; 5032: Universal guide block; 6: Shaft end centering mechanism; 601: Fixed plate; 602: Rotating shaft; 603: Alignment roller bearing; 604: Bearing seat; 7: Product support table; 8: Product positioning mechanism; 9: Product precision detection mechanism; 901: Fixed base; 902: Telescopic module; 9021: Linear guide slider assembly; 9022: Cylinder; 9023: Connecting block; 903: Distance measuring sensor; 904: Transfer module; 9041: Linear module; 9042: Sensor fixing block; 9043: Fourth ball screw nut; 10: Product clamping mechanism; 11: Auxiliary lifting mechanism. Detailed implementation manners

[0038] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0040] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined. In addition, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] As Figures 1-9 shown, the present invention provides a high-precision automatic displacement device for shaft workpieces, including: a rotary displacement mechanism 1, a lifting mechanism 2, a product base support assembly 3, a secondary lateral adjustment mechanism 4, a secondary longitudinal adjustment mechanism 5, and a shaft end centering mechanism 6. A product support table 7 that can move relative to it is arranged on the product base support assembly 3. The shaft workpiece is positioned and clamped on the product support table 7 through a product positioning mechanism 8 and a product clamping mechanism 10. The rotary displacement mechanism 1 is rotationally connected to the side surface of the product base support assembly 3 and can control the product base support assembly 3, the product support table 7, and the shaft workpiece to rotate together to achieve rotary displacement. The lifting mechanism 2 is used to drive the product base support assembly 3 and the rotary displacement mechanism 1 to lift together to a height at which rotary displacement can be performed. After the shaft workpiece rotates and displaces to the required detection or assembly angular position, the end face of the shaft workpiece is detected through sensors, etc. Then, the secondary lateral adjustment mechanism 4 and the secondary longitudinal adjustment mechanism 5 perform a combined action to finely adjust the product to the final required position.

[0042] Among them, the rotational displacement mechanism 1 includes a first driving component 101 and a rotational transmission component. The rotational transmission component includes a flexible indexing turntable 102 and a connecting transition flange. The flexible indexing turntable 102 is fixedly connected to the product base support component 3 through the connecting transition flange, and then the rotation angle of the product base support component 3 is accurately controlled through the flexible indexing turntable 102, thereby realizing the rotational displacement of the shaft workpiece, thereby reaching the angle of the required position for assembly or detection.

[0043] The product support platform 7 is arranged on the surface of the product base support assembly 3 and can be fine-tuned in the horizontal and vertical directions relative to it. The product support platform 7 is provided with a product positioning mechanism 10 and a product clamping mechanism 11, which are used to position and clamp the shaft workpiece 8, so that the product support platform 7 and the shaft workpiece 8 can be fine-tuned twice together to achieve the corresponding inspection or assembly accuracy.

[0044] The lifting mechanism 2 includes a second driving assembly 201, a lifting transmission assembly 202, a slide assembly 203 and a frame assembly 204. The second driving assembly 201 and the lifting transmission assembly 202 are arranged on the frame assembly 204. The bottom of the frame assembly 204 is fixed on the ground. The slide assembly 203 can be lifted and lowered relative to the frame assembly 204 under the action of the second driving assembly 201 and the lifting transmission assembly 202. The rotary displacement mechanism 1 is fixedly connected to the slide assembly 203. The rotary displacement mechanism 1 and the product base support assembly 3 can be driven to lift and lower together through the lifting mechanism 2, and then reach a height where rotary displacement can be performed.

[0045] The secondary lateral adjustment mechanism 4 and the secondary longitudinal adjustment mechanism 5 are arranged at the bottom of the product support platform 7, and both are arranged at the same end of the product base support assembly 3, wherein the secondary lateral adjustment mechanism 4 is used for secondary fine-tuning the position of the shaft workpiece in the lateral direction after the shaft workpiece is rotated and displaced and detected, and the secondary longitudinal adjustment mechanism 5 is used for secondary fine-tuning the position of the shaft workpiece in the longitudinal direction after the shaft workpiece is rotated and displaced and detected; the shaft end centering mechanism 6 is arranged at the other end of the product base support assembly 3, and is used for universal support of the shaft workpiece 8 during secondary fine-tuning after the shaft workpiece is rotated and displaced and detected.

[0046] Specifically, the first drive assembly 101 and the second drive assembly 201 each include a servo motor, a planetary reducer and a coupling that are sequentially connected in transmission, wherein the first drive assembly 101 is fixedly mounted on the product base support assembly 3, and the second drive assembly 201 is fixed to the top of the frame assembly 204, and is connected through the transmission connection of the servo motor, the planetary reducer and the coupling, and is respectively connected in transmission with the flexible indexing turntable and the lifting transmission assembly 202 after speed reduction.

[0047] Specifically, the lifting and driving assembly 202 includes a first ball screw nut 2021 and a set of linear slide rails 2022. The first ball screw nut 2021 can be driven under the action of the second driving assembly 201. The slide plate assembly 203 can slide up and down relative to the linear slide rails 2022 along with the transmission of the first ball screw nut 2021, thereby driving the rotation displacement mechanism 1 and the shaft workpiece 8 to lift.

[0048] In this embodiment, the frame assembly 204 includes a frame main body 2041 and a mounting base 2042. Among them, the mounting base 2042 is anchored to the ground. The first ball screw nut 2021 and the linear slide rails 2022 are arranged on one side of the frame main body 2041. The second driving assembly 201 is fixed to the top of the frame main body 2041, and the first ball screw nut 2021 is in transmission cooperation connection with the second driving assembly 201.

[0049] In this embodiment, the secondary lateral adjustment mechanism 4 includes a third driving assembly 401, a lateral transmission assembly 402, a lateral adjustment actuator 403 and a universal connecting rod 404. Among them, the base of the lateral adjustment actuator 403 is arranged at the right end of the product base support assembly 3. The third driving assembly 401 includes a servo motor, a planetary reducer, a coupling and a connecting flange. The lateral transmission assembly 402 includes a second ball screw nut 4021 and two sets of lateral linear guide rail sliders 4022. The lateral adjustment actuator 403 includes a lateral moving slide plate, and the lateral moving slide plate is adaptively installed with the second ball screw nut 4021 and the lateral linear guide rail sliders 4022 and can move laterally along the product base support assembly 3 therewith. The outer side of the lateral moving slide plate is movably connected to the right end of the product support table 7 through the universal connecting rod 404. When the lateral moving slide plate moves, it can drive the product support table 7 to move laterally through the universal connecting rod 404, thereby finely adjusting the lateral position of the shaft workpiece. Since the universal connecting rod 404 has lateral and longitudinal degrees of freedom, it can adapt during the secondary longitudinal adjustment mechanism 5.

[0050] The secondary longitudinal adjustment mechanism 5 includes a fourth drive assembly 501, a longitudinal transmission assembly 502, and a longitudinal adjustment actuator 503. The fourth drive assembly 501 includes a servo motor, a planetary reducer, a coupling, and a connecting flange. The longitudinal transmission assembly 502 includes a third ball screw nut 5021 and two groups of longitudinal linear guide sliders 5022. The third ball screw nut 5021 can be driven by the fourth drive assembly 501 to make the longitudinal adjustment actuator 503 slide relative to the longitudinal linear guide sliders 5022. The longitudinal adjustment actuator 503 includes a longitudinal moving slide plate 5031 and a universal guiding block 5032. The universal guiding block 5032 is arranged on the surface of the longitudinal moving slide plate 5031. The longitudinal moving slide plate 5031 is arranged at the bottom of the product support table 7 and is fixedly connected thereto. Moreover, the longitudinal moving slide plate 5031 is adaptively installed with the third ball screw nut 5021 and the longitudinal linear guide sliders 5022, and can drive the product support table 7 to move longitudinally, thereby finely adjusting the longitudinal position of the shaft workpiece.

[0051] In this embodiment, the shaft end alignment mechanism 6 includes a fixing plate 601, a rotating shaft 602, an alignment roller bearing 603, and a bearing seat 604. The fixing plate 601 is installed at one end of the product support table 7 far from the secondary lateral adjustment mechanism 4 through a connecting flange. The bearing seat 604 is fixedly connected to the fixing plate 601. The alignment roller bearing 603 is installed in the bearing seat 604. The rotating shaft 602 is rotatably connected to the alignment roller bearing 603, and the axis of the rotating shaft 602 is parallel to the surface of the product support table 7, that is, it is in the horizontal direction when not displaced, and it can cooperate with the end of the shaft workpiece after displacement, and is used for positioning and universal support of one end of the shaft workpiece when the shaft workpiece is finely adjusted for the second time.

[0052] The high-precision automatic position-changing device for shaft workpieces of the present invention further includes a product precision detection mechanism 9 fixed on the frame assembly 204. The product precision detection mechanism 9 includes a fixed base 901, a telescopic module 902, a distance measuring sensor 903, and a transfer module 904. The telescopic module 902 includes a linear guide rail slider assembly 9021, a cylinder 9022, and a connecting block 9023. The end of the piston rod of the cylinder 9022 is fixedly connected to the transfer module 904 through the connecting block 9023. The bottom of the transfer module 904 can move back and forth along the linear guide rail slider assembly 9021 in a direction perpendicular to the frame assembly 204, so that the transfer module 904 and the distance measuring sensor 903 move forward and backward together to corresponding positions. The transfer module 904 includes a servo motor, a linear module 9041 composed of a fourth ball screw nut 9043 and a guide rail and slide rail, and a sensor fixing block 9042. The distance measuring sensor 903 is fixed on the sensor fixing block 9042. The movement directions of the telescopic module 902 and the transfer module 904 are perpendicular to each other. The transfer module 904 is arranged horizontally. The sensor fixing block 9042 can move left and right along the horizontal direction under the action of the linear module 9041 composed of the fourth ball screw nut 9043 and the guide rail and slide rail, and then cooperate with the telescopic module 902 to move the distance measuring sensor 903 directly above the end face of the position-changed shaft workpiece 8, so as to detect the end face precision of the shaft workpiece.

[0053] In this embodiment, the product positioning mechanism 8 is composed of two positioning blocks with positioning inclined surfaces, and the outer peripheral surface of the shaft workpiece is positioned through the relatively arranged inclined surfaces to prevent it from rotating or shifting. The product clamping mechanism 10 includes a plurality of detachable fastening snap rings arranged at intervals on the product support table 7. The fastening snap ring includes a circular or rectangular shape, and a detachable pressing block and a handle are provided on its top. After disassembly, the shaft workpiece can be clamped into the fastening snap ring from its top. A slide rail is arranged on the surface of the product support table 7, and sliders matching the slide rail are arranged at the bottoms of the product positioning mechanism 8 and the product clamping mechanism 10, which can drive the product positioning mechanism 8 and the product clamping mechanism 10 to slide along the slide rail to adjust their relative positions on the surface of the product support table 7. An auxiliary lifting mechanism 11 is further arranged on one side of the product clamping mechanism 10, which can assist in lifting one end of the shaft workpiece through the action of the cylinder, so that the axis of the shaft workpiece is kept in the horizontal plane, and the limit positions of the product positioning mechanism 8 and the product clamping mechanism 10 can be limited. Then, the product clamping mechanism 10 is used to clamp it, which is convenient for the shaft workpiece after position change to reach the corresponding position more accurately and reduces the time required for adjustment.

[0054] The usage process of the high-precision automatic position-changing device for shaft workpieces of the present invention is as follows:

[0055] 1) The shaft workpiece is positioned and fixed through the product support table 7, the product positioning mechanism 8, and the product clamping mechanism 10;

[0056] 2) The lifting mechanism 2 operates, and components such as the shaft workpiece, the product support table 7, and the product base support assembly 3 are lifted to the rotatable displacement height.

[0057] 3) The product support table 7 and the product base support assembly 3 operate through the rotation displacement mechanism 1, driving the adjustment from the horizontal state to the vertical or inclined angle state.

[0058] 4) The product precision detection mechanism 9 operates. Under the action of the telescopic module 902 and the transfer module 904, the distance measuring sensor 903 reaches the product end face detection position to detect the end face precision.

[0059] 5) The secondary longitudinal adjustment mechanism 5 and the secondary transverse adjustment mechanism 4 perform a combined operation to finely adjust the shaft workpiece to the final required position. During this process, the shaft end centering mechanism 6 plays a role in providing universal support and positioning for the shaft end.

[0060] 6) After the product is assembled or tested, each mechanism resets.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic displacement device with high precision for shaft workpieces, characterized in that, Comprising: A rotary indexing mechanism, including a first driving component and a rotary transmission component. The rotary transmission component includes a flexible indexing turntable and a connecting transition flange. The flexible indexing turntable is fixedly connected to the product base support component through the connecting transition flange, and then controls the rotation of the product base support component through the flexible indexing turntable to achieve the rotary indexing of the shaft workpiece and reach the angle at the position required for assembly or detection; A product support table, arranged on the product base support component. The product support table is provided with a product positioning mechanism and a product clamping mechanism for positioning and clamping the shaft workpiece; A lifting mechanism, including a second driving component, a lifting transmission component, a slide plate component and a frame component. The second driving component and the lifting transmission component are arranged on the frame component. The slide plate component can move up and down relative to the frame component under the action of the second driving component and the lifting transmission component. The rotary indexing mechanism is fixedly connected to the slide plate component; A secondary lateral adjustment mechanism, used to perform secondary fine adjustment of the position of the shaft workpiece in the lateral direction after the rotary indexing and detection of the shaft workpiece. The secondary lateral adjustment mechanism includes a third driving component, a lateral transmission component, a lateral adjustment actuator and a universal link. Among them, the base of the lateral adjustment actuator is arranged on the product base support component. The third driving component includes a servo motor, a planetary reducer, a coupling and a connecting flange. The lateral transmission component includes a second ball screw nut and two groups of lateral linear guide sliders. The lateral adjustment actuator includes a lateral moving slide plate. The lateral moving slide plate is adaptively installed with the second ball screw nut and the lateral linear guide sliders and can move laterally along the product base support component therewith. The outer side of the lateral moving slide plate is movably connected to one end of the product support table through the universal link and can drive the product support table to move laterally, thereby performing fine adjustment of the lateral position of the shaft workpiece; A secondary longitudinal adjustment mechanism, used to perform secondary fine adjustment of the position of the shaft workpiece in the longitudinal direction after the rotary indexing and detection of the shaft workpiece; A shaft end centering mechanism, used to perform universal support on the shaft workpiece during secondary fine adjustment after the rotary indexing and detection of the shaft workpiece. The shaft end centering mechanism includes a fixing plate, a rotating shaft, a centering roller bearing and a bearing seat. The fixing plate is installed on the end of the product support table far from the secondary lateral adjustment mechanism through a connecting flange. The bearing seat is fixedly connected to the fixing plate. The centering roller bearing is installed in the bearing seat. The rotating shaft is rotatably connected to the centering roller bearing and is used to position and provide universal support for one end of the shaft workpiece during secondary fine adjustment of the shaft workpiece; The product precision detection mechanism is fixed on the frame assembly. The product precision detection mechanism includes a fixed base, a telescopic module, a distance measuring sensor and a transfer module. The telescopic module includes a linear guide rail slider assembly, a cylinder and a connecting block. The transfer module includes a servo motor, a linear module composed of a fourth ball screw nut and a guide rail, and a sensor fixing block. The telescopic module is fixedly connected to the transfer module through the connecting block. The distance measuring sensor is fixed on the sensor fixing block. The movement directions of the telescopic module and the transfer module are perpendicular to each other, and are used to adjust the position of the distance measuring sensor, so as to detect the precision of shaft-like workpieces.

2. The high-precision automatic position-changing device for shaft workpieces according to claim 1, wherein Both the first driving component and the second driving component include a servo motor, a planetary reducer and a coupling.

3. The high-precision automatic position-changing device for shaft workpieces according to claim 2, wherein, The lifting transmission component includes a first ball screw nut and a set of linear guide rails. The first ball screw nut can be driven under the action of the second driving component. The slide plate component can slide up and down relative to the linear guide rails along with the first ball screw nut, so as to drive the rotation displacement mechanism and the shaft-like workpiece to lift.

4. The high-precision automatic position-changing device for shaft workpieces according to claim 3, characterized in that, The frame assembly includes a frame main body and a mounting base. The mounting base is anchored to the ground. The first ball screw nut and the linear guide rails are arranged on one side of the frame main body. The second driving component is fixed on the top of the frame main body. The first ball screw nut is in transmission cooperation connection with the second driving component.

5. The high-precision automatic position-changing device for shaft workpieces according to claim 1, characterized in that, The secondary longitudinal adjustment mechanism includes a fourth driving component, a longitudinal transmission component and a longitudinal adjustment execution mechanism. The fourth driving component includes a servo motor, a planetary reducer, a coupling and a connecting flange. The longitudinal transmission component includes a third ball screw nut and two groups of longitudinal linear guide rail sliders. The longitudinal adjustment execution mechanism includes a longitudinal moving slide plate and a universal guiding block. The universal guiding block is arranged on the surface of the longitudinal moving slide plate. The longitudinal moving slide plate is arranged at the bottom of the product support table, and the longitudinal moving slide plate is adaptively installed with the third ball screw nut and the longitudinal linear guide rail sliders, and can drive the product support table to move longitudinally, so as to finely adjust the longitudinal position of the shaft-like workpiece.

6. The high-precision automatic position-changing device for shaft workpieces according to claim 1, characterized in that, The product positioning mechanism includes two positioning blocks with positioning inclined surfaces.

7. The high-precision automatic position-changing device for shaft workpieces according to claim 1, characterized in that, The product clamping mechanism includes a plurality of detachable fastening snap rings arranged on the product support table.

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