Positioning device
By designing a positioning device of a multi-level positioning mechanism, combining the bearing surface and clamping structure, the problem that traditional positioning devices cannot position the special-shaped workpiece with high accuracy is solved, and high-precision positioning of workpieces such as hinges are achieved.
Patent Information
- Application Number
- CN202323388551.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-12
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2033-12-12
AI Technical Summary
Traditional positioning devices cannot position the shaft and plate portions of special-shaped workpieces such as hinge shafts at the same time with high accuracy, and cannot meet the requirements of positioning accuracy.
A positioning device including a carrier member, a first positioning mechanism, a second positioning mechanism and a third positioning mechanism are designed, and the first positioning mechanism and the second bearing surface are matched with the clamping shaft portion through the first bearing surface bearing plate portion, the first positioning mechanism and the second bearing surface are matched with the clamping shaft portion. The swing member and the first pressing block cooperate with the clamping shaft part, and the driving rod drives the swing member to abut the shaft part, and adapts the fitting surface to the shaft part, thereby improving the fitting degree and thereby improving positioning accuracy.
Through this device, the workpiece can be positioned with high precision in the first and second directions, which improves the positioning accuracy of the positioning device and meets the precision positioning requirements for special-shaped workpieces.
Smart Images
Figure CN222177364U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of processing technology, and in particular to a positioning device. Background Art
[0002] Special-shaped workpieces such as hinge shafts have a shaft portion and a plate portion connected to each other. When processing such workpieces, traditional positioning devices can usually only position the shaft portion or the plate portion separately, which cannot meet the requirements of positioning accuracy. Utility Model Content
[0003] In view of the above situation, the present application provides a positioning device, which is conducive to improving positioning accuracy.
[0004] The embodiment of the present application provides a positioning device for positioning a workpiece, wherein the workpiece has a shaft portion and a plate portion connected to each other. The positioning device includes a bearing, a first positioning mechanism, a second positioning mechanism and a third positioning mechanism. The bearing includes a first bearing surface arranged in a first direction and a second bearing surface arranged in a second direction, wherein the first direction is perpendicular to the second direction. The first bearing surface is configured to bear the plate portion, and the second bearing surface is configured to abut the shaft portion. The first positioning mechanism is movably arranged on one side of the second bearing surface along the second direction, and is configured to abut the shaft portion toward the second bearing surface. The second positioning mechanism includes a first pressing block, which is configured to be movably arranged on one side of the shaft portion along the first direction to abut the shaft portion. The third positioning mechanism includes a driving rod and a swinging member, wherein the driving rod is configured to be movably arranged on the other side of the shaft portion along the first direction, wherein one end of the swinging member is rotatably connected to the driving rod around an axis, wherein the axial direction of the axis is perpendicular to the first direction, and the other end of the swinging member is provided with a fitting surface, wherein the fitting surface is configured to extend along the axial direction of the shaft portion and abut the shaft portion.
[0005] In some embodiments of the present application, the projection line of the axis on the fitting surface is a first reference line, and the fitting surface includes a first area and a second area located on both sides of the first reference line, and the first area and the second area are symmetrical relative to the first reference line.
[0006] In some embodiments of the present application, the third positioning mechanism further includes an axle pin. A recess is provided at one end of the driving rod. The swing member includes a swing portion and a connecting portion, one side of the swing portion is provided with the fitting surface, and the other side of the swing portion is fixed with the connecting portion. The connecting portion extends into the recess, the axle pin has the axis, and the axle pin passes through the connecting portion and is connected to the axle pin recess.
[0007] In some embodiments of the present application, the second bearing surface is configured to abut against a side of the shaft portion facing the plate portion. The first positioning mechanism is configured to abut against a side of the shaft portion facing away from the second bearing surface. Along the first direction, the projection of the swinging member and the projection of the first pressing block are respectively located outside the projection of the bearing member. A first holding surface is provided on a side of the first pressing block facing the swinging member, and the first holding surface is perpendicular to the first direction.
[0008] In some embodiments of the present application, the positioning device further includes a fourth positioning mechanism, the fourth positioning mechanism is movably disposed on one side of the second bearing surface along the second direction, and is configured to abut against the side of the shaft portion away from the second bearing surface. The fourth positioning mechanism and the second positioning mechanism are arranged along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.
[0009] In some embodiments of the present application, the second bearing surface is configured to abut against a side of the shaft portion away from the plate portion. The first positioning mechanism abuts against a side of the plate portion away from the shaft portion. The bearing member further includes a third bearing surface arranged in the first direction, the third bearing surface being arranged between the first bearing surface and the second bearing surface. The bearing member is provided with a through hole penetrating the third bearing surface along the first direction, the swinging member passes through the through hole, and the third bearing surface and the swinging member abut against the shaft portion.
[0010] In some embodiments of the present application, the first pressing block is provided with a second pressing surface, the second pressing surface is arranged obliquely relative to the third bearing surface, and is configured to synchronously hold the shaft portion toward the third bearing surface and the second bearing surface.
[0011] In some embodiments of the present application, the positioning device further includes a fifth positioning mechanism, which is movably disposed on one side of the first bearing surface along the first direction and is configured to abut against a side of the plate portion facing away from the first bearing surface.
[0012] In some embodiments of the present application, the first bearing surface is concavely provided with an adsorption groove, and the adsorption groove is configured to adsorb the plate portion.
[0013] In some embodiments of the present application, the positioning mechanism further comprises a base and a support plate, wherein the support plate is rotatably connected to the base, and the bearing member, the first positioning mechanism, the second positioning mechanism and the third positioning mechanism are respectively connected to the support plate.
[0014] In the positioning device, the plate portion is carried by the first carrying surface, the first positioning mechanism and the second carrying surface cooperate to clamp the shaft portion in the second direction, and the swing member and the first pressure block cooperate to clamp the shaft portion in the first direction to position the workpiece in the first direction and the second direction. The swing member is driven by the driving rod to abut against the shaft portion, and the swing member rotates around the axis to make the contact surface fit the shaft portion, so as to improve the contact degree between the contact surface and the shaft portion, thereby improving the positioning accuracy of the positioning device. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of a positioning device for positioning a workpiece in one embodiment of the present application.
[0016] Figure 2 It is a schematic diagram of the first-view structure of a carrier of a positioning device in an embodiment of the present application.
[0017] Figure 3 It is a schematic diagram of the second viewing angle structure of the carrier of the positioning device in one embodiment of the present application.
[0018] Figure 4 It is a schematic structural diagram of a third positioning mechanism of a positioning device in an embodiment of the present application.
[0019] Figure 5 It is a structural schematic diagram of a positioning device for positioning a workpiece in another embodiment of the present application.
[0020] Figure 6 It is a schematic structural diagram from a first perspective of a carrier of a positioning device in another embodiment of the present application.
[0021] Figure 7 It is a schematic structural diagram from a second perspective of a carrier of a positioning device in another embodiment of the present application.
[0022] Main component symbols
[0023] Positioning devices 100a, 100b
[0024] Carrier 10
[0025] Through hole 10a The first bearing surface 11 Adsorption tank 111 Positioning pin 112 The second bearing surface 12 The third bearing surface 13 The first positioning mechanism 20 The first driving member 21 The first transmission end 211 First push block 22 The second positioning mechanism 30 First pressing block 31 The first pressing surface 311 The second pressing surface 312 The second driving member 32 The second transmission end 321
[0026] First pressing claw 33 The third positioning mechanism 40 Driving rod 41 Recess 411 Inner wall 411a Swinging piece 42 Axis L Fitting surface 421 The first reference line S First region 421a Second area 421b Swinging part 422 Connection part 423 Axis pin 43 The third driving member 44 The third transmission end 441 Fourth positioning mechanism 50 Fourth driving member 51 Fourth transmission end 511 Fourth push block 52 Fifth positioning mechanism 60 Fifth driving member 61 Fifth transmission end 611
[0027] Second pressing claw 62
[0028] Second pressing block 63
[0029] Serrated surface 631
[0030] Base 71
[0031] Support plate 72
[0032] First direction Z
[0033] Second direction X
[0034] The third direction Y
[0035] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION
[0036] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.
[0037] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centrally disposed element at the same time. When an element is considered to be "disposed" on another element, it may be directly disposed on the other element or there may be a centrally disposed element at the same time.
[0038] The term "perpendicular" is used to describe the ideal state between two components. In actual production or use, there may be a state that is approximately perpendicular between the two components. For example, combined with numerical descriptions, perpendicularity can refer to the angle between two straight lines being between 90°±10°, perpendicularity can also refer to the dihedral angle between two planes being between 90°±10°, and perpendicularity can also refer to the angle between a straight line and a plane being between 90°±10°. The two components described as "perpendicular" may not be absolute straight lines or planes, but may be roughly straight lines or planes. From a macroscopic perspective, a component can be considered a "straight line" or a "plane" if the overall extension direction is a straight line or a plane.
[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present application belongs. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0040] The embodiments of the present application are further described below in conjunction with the accompanying drawings.
[0041] Embodiment 1
[0042] Please also read Figure 1 and Figure 2 An embodiment of the present application provides a positioning device 100a for positioning a workpiece 90. The workpiece 90 has a shaft portion 91 and a plate portion 92 connected to each other. The workpiece 90 may be, but is not limited to, a hinge shaft.
[0043] The positioning device 100a includes a carrier 10, a first positioning mechanism 20, a second positioning mechanism 30 and a third positioning mechanism 40. The carrier 10 includes a first bearing surface 11 arranged in a first direction Z and a second bearing surface 12 arranged in a second direction X. The first direction Z is perpendicular to the second direction X. The first bearing surface 11 is configured as a bearing plate portion 92, and the second bearing surface 12 is configured to abut against the shaft portion 91.
[0044] Please also read Figure 3The first positioning mechanism 20 is movably disposed on one side of the second bearing surface 12 along the second direction X, and is configured to hold the shaft portion 91 toward the second bearing surface 12 to position the workpiece 90 in the second direction X.
[0045] The second positioning mechanism 30 includes a first pressing block 31 , which is configured to be movably disposed on one side of the shaft portion 91 along the first direction Z to abut against the shaft portion 91 . Specifically, the first pressing block 31 is used to abut against one side of the shaft portion 91 in the first direction Z.
[0046] The third positioning mechanism 40 includes a driving rod 41 and a swinging member 42, wherein the driving rod 41 is configured to be movably arranged at the other side of the shaft portion 91 along the first direction Z, one end of the swinging member 42 is rotatably connected to the driving rod 41 around an axis L, the axial direction of the axis L is perpendicular to the first direction Z, and the other end of the swinging member 42 is provided with a fitting surface 421, which is configured to extend along the axial direction of the shaft portion 91 and abut the shaft portion 91. Specifically, the fitting surface 421 is used to abut the other side of the shaft portion 91 in the first direction Z, so that the swinging member 42 and the first pressing block 31 cooperate to clamp the shaft portion 91 in the first direction Z, thereby positioning the workpiece 90 in the first direction Z.
[0047] When the driving rod 41 drives the swinging member 42 to abut the shaft 91 , the swinging member 42 can rotate around the axis L so that the angle of the fitting surface 421 is adapted to the shaft 91 , thereby improving the fit between the fitting surface 421 and the shaft 91 and further improving the positioning accuracy.
[0048] In the positioning device 100a, the first bearing surface 11 carries the plate portion 92, the first positioning mechanism 20 and the second bearing surface 12 cooperate to clamp the shaft portion 91 in the second direction X, and the swing member 42 and the first pressing block 31 cooperate to clamp the shaft portion 91 in the first direction Z, so as to position the workpiece 90 in the first direction Z and the second direction X. The swing member 42 is driven by the driving rod 41 to abut against the shaft portion 91, and the swing member 42 rotates around the axis L to make the contact surface 421 fit with the shaft portion 91, so as to improve the contact degree between the contact surface 421 and the shaft portion 91, thereby improving the positioning accuracy of the positioning device 100a.
[0049] Please continue reading Figure 2 In some embodiments, the first bearing surface 11 is provided with an adsorption groove 111, and the adsorption groove 111 is configured to adsorb the plate portion 92 to improve positioning accuracy. Specifically, the bearing member 10 is provided with a connection hole connected to the adsorption groove 111, and the connection hole is connected to an external negative pressure device to form a negative pressure between the adsorption groove 111 and the plate portion 92.
[0050] In some embodiments, a positioning pin 112 is protruding from the first bearing surface 11 , and the positioning pin 112 is configured to cooperate with a positioning hole of the plate portion 92 to improve positioning accuracy.
[0051] Please also read Figure 2 and Figure 3 In some embodiments, the first bearing surface 11 and the second bearing surface 12 are disposed adjacent to each other. The second bearing surface 12 is configured to abut against the side of the shaft portion 91 facing the plate portion 92, and the first positioning mechanism 20 is configured to abut against the side of the shaft portion 91 facing away from the second bearing surface 12. Along the first direction Z, the projection of the swinging member 42 and the projection of the first pressing block 31 are respectively located outside the projection of the bearing member 10, so as to reduce the risk of the bearing member 10 interfering with the movement of the swinging member 42 or the first pressing block 31 along the first direction Z, which is conducive to simplifying the structure of the positioning device 100.
[0052] In some embodiments, the first positioning mechanism 20 includes a first driving member 21 and a first push block 22. The first driving member 21 is fixed to one side of the second bearing surface 12 in the second direction X. The first driving member 21 is provided with a first transmission end 211 movable along the second direction X. The first push block 22 is connected to the first transmission end 211 and is configured to abut the shaft portion 91.
[0053] Optionally, the first driving member 21 is a cylinder or a motor, etc.; the first pushing block 22 is made of a buffer material such as rubber to reduce the risk of damage to the shaft portion 91.
[0054] In some embodiments, there are multiple first positioning mechanisms 20, and the multiple first positioning mechanisms 20 are arranged along the third direction Y, which is conducive to making the shaft 91 evenly stressed. The first direction Z, the second direction X and the third direction Y are perpendicular to each other.
[0055] Optionally, the number of the first positioning mechanisms 20 is 2, 3, 4, 5 or other number greater than 5.
[0056] Please also read Figure 2 and Figure 3 In some embodiments, a first pressing surface 311 is provided on the side of the first pressing block 31 facing the swinging member 42, and the first pressing surface 311 is perpendicular to the first direction Z so as to hold the shaft portion 91 toward the swinging member 42, thereby facilitating improving the fit between the fitting surface 421 and the shaft portion 91, thereby improving the positioning accuracy of the positioning device 100a.
[0057] In some embodiments, the second positioning mechanism 30 further includes a second driving member 32 and a first pressing claw 33. The second driving member 32 is fixed to one side of the second bearing surface 12 in the second direction X, and the second driving member 32 is provided with a second transmission end 321 movable along the first direction Z. One end of the first pressing claw 33 is connected to the second transmission end 321, and the other end of the first pressing claw 33 is connected to the first pressing block 31. The second transmission end 321 is configured to drive the first pressing block 31 to move along the first direction Z through the first pressing claw 33.
[0058] Optionally, the second driving member 32 is a cylinder or a motor, etc.; the first pressing block 31 is made of a buffer material such as rubber to reduce the risk of damage to the shaft portion 91.
[0059] In some embodiments, there are multiple second positioning mechanisms 30 , and the multiple second positioning mechanisms 30 are arranged along the third direction Y, which is beneficial for making the shaft portion 91 subject to uniform force.
[0060] Optionally, the number of the second positioning mechanisms 30 is 2, 3, 4, 5 or other number greater than 5.
[0061] In some embodiments, when there are multiple second positioning mechanisms 30, the first pressing blocks 31 of some of the second positioning mechanisms 30 abut against the shaft portion 91, and the first pressing blocks 31 of some of the second positioning mechanisms 30 also abut against the area of the plate portion 92 adjacent to the shaft portion 91 to improve the stability of positioning.
[0062] In some embodiments, the second driving member 32 and the first driving member 21 are alternately arranged in the third direction Y, so as to improve the space utilization of the positioning device 100 .
[0063] Please also read Figure 3 and Figure 4 In some embodiments, the projection line of the axis L on the fitting surface 421 is the first reference line S. The fitting surface 421 includes a first area 421a and a second area 421b located on both sides of the first reference line S. The first area 421a and the second area 421b are symmetrical with respect to the first reference line S, so that the fitting surface 421 is evenly stressed under the drive of the driving rod 41, so as to improve the fitting stability between the fitting surface 421 and the shaft portion 91, thereby improving the positioning accuracy of the positioning device 100a.
[0064] In some embodiments, the third positioning mechanism 40 further includes an axle pin 43. A recess 411 is provided at one end of the driving rod 41. The swinging member 42 includes a swinging portion 422 and a connecting portion 423, a fitting surface 421 is provided on one side of the swinging portion 422, and the connecting portion 423 is fixed on the other side of the swinging portion 422. The connecting portion 423 extends into the recess 411, and the axle pin 43 has an axis L, and the axle pin 43 passes through the connecting portion 423 and is connected to the recess 411, so that the fitting surface 421 is rotatably connected to the driving rod 191 around the axis L.
[0065] In some embodiments, the recess 411 includes two oppositely disposed inner walls 411a, which are located on the rotation trajectory of the connecting portion 423 to limit the rotation angle of the connecting portion 423, thereby limiting the rotation range of the fitting surface 421, so as to facilitate the fitting surface 421 to move along the first direction Z toward the shaft portion 91.
[0066] In some embodiments, the third positioning mechanism 40 further includes a third driving member 44, which is fixed to one side of the second bearing surface 12 in the first direction Z. The third driving member 44 is provided with a third transmission end 441 movable along the first direction Z, and one end of the driving rod 41 away from the swinging member 42 is connected to the third transmission end 441. The third transmission end 441 is configured to drive the swinging member 42 to move along the first direction Z through the driving rod 41.
[0067] Optionally, the first driving member 21 is a cylinder or a motor.
[0068] It can be understood that the driving rod 41 and the driving end of the third driving end 441 are integrally formed to improve the stability of the connection between the driving rod 41 and the third driving member 44 .
[0069] In some embodiments, there are multiple third positioning mechanisms 40 , and the multiple third positioning mechanisms 40 are arranged along the third direction Y, which is beneficial for making the shaft portion 91 subject to uniform force.
[0070] Optionally, the number of the third positioning mechanisms 40 is 2, 3, 4, 5 or other number greater than 5.
[0071] In some embodiments, the number of the third positioning mechanisms 40 is equal to the number of the second positioning mechanisms 30 , and each swinging member 42 is disposed opposite to a first pressing block 31 along the first direction Z to improve the positioning accuracy of the positioning device 100 a .
[0072] Please refer again Figure 2 and Figure 3 In some embodiments, the positioning device 100 further includes a fourth positioning mechanism 50, which is movably disposed on one side of the second bearing surface 12 along the second direction X, and is configured to abut against the side of the shaft portion 91 away from the second bearing surface 12. When the shaft portion 91 is hollowed out, the structural strength of the shaft portion 91 will be weakened, and the fourth positioning mechanism 50 can share the stress inside the shaft portion 91 to buffer the shaft portion 91, thereby reducing the risk of damage to the shaft portion 91.
[0073] The fourth positioning mechanism 50 and the second positioning mechanism 30 are arranged along the third direction Y to reduce the risk of interference between the fourth positioning mechanism 50 and the second positioning mechanism 30 .
[0074] In some embodiments, the fourth positioning mechanism 50 includes a fourth driving member 51 and a fourth push block 52. The fourth driving member 51 is fixed to one side of the second bearing surface 12 in the second direction X. The fourth driving member 51 is provided with a fourth transmission end 511 movable along the second direction X. The fourth push block 52 is connected to the fourth transmission end 511 and is configured to abut the shaft portion 91.
[0075] Optionally, the fourth driving member 51 is a cylinder or a motor, etc.; the fourth push block 52 is made of a buffer material such as rubber to reduce the risk of damage to the shaft portion 91.
[0076] In some embodiments, there are multiple fourth positioning mechanisms 50 , and the multiple fourth positioning mechanisms 50 are arranged along the third direction Y, which is beneficial for buffering different parts of the shaft portion 91 .
[0077] Please refer again Figure 2 and Figure 3 In some embodiments, the positioning device 100a also includes a fifth positioning mechanism 60, which is movably disposed on one side of the first bearing surface 11 along the first direction Z, and is configured to abut against the side of the plate portion 92 away from the first bearing surface 11 to reduce the risk of vibration or displacement of the plate portion 92, thereby improving the positioning accuracy.
[0078] In some embodiments, the fifth positioning mechanism 60 includes a fifth driving member 61, a second pressing claw 62, and a second pressing block 63. The fifth driving member 61 is fixed to a side of the first bearing surface 11 away from the second bearing surface 12, and the fifth driving member 61 is provided with a fifth transmission end 611 movable along the first direction Z. One end of the second pressing claw 62 is connected to the fifth transmission end 611, and the other end of the second pressing claw 62 is connected to the second pressing block 63. The fifth transmission end 611 is configured to drive the second pressing block 63 to move along the first direction Z through the second pressing claw 62.
[0079] In some embodiments, a serrated surface 631 is disposed on a side of the second pressing block 63 facing the first supporting surface 11 to improve the stability of the abutment.
[0080] Please refer again Figure 1 In some embodiments, the positioning mechanism further includes a base 71 and a support plate 72, and the support plate 72 is rotatably connected to the base 71. The carrier 10, the first positioning mechanism 20, the second positioning mechanism 30, and the third positioning mechanism 40 are respectively connected to the support plate 72 to adjust the processing angle of the workpiece 90. Specifically, the first driving member 21, the second driving member 32, and the third driving member 44 are respectively fixed to the support plate 72.
[0081] In some embodiments, the fourth positioning mechanism 50 and the fifth positioning mechanism 60 are respectively connected to the support plate 72. Specifically, the fourth driving member 51 and the fifth driving member 61 are respectively fixed to the support plate 72.
[0082] Embodiment 2
[0083] Please also read Figure 5 and Figure 6 One embodiment of the present application further provides a positioning device 100b. The differences between the positioning device 100b and the positioning device 100a are as follows:
[0084] The second bearing surface 12 is configured to abut against a side of the shaft 91 away from the plate 92 . The first positioning mechanism 20 abuts against a side of the plate 92 away from the shaft 91 to hold the shaft 91 toward the second bearing surface 12 through the plate 92 .
[0085] The bearing member 10 further includes a third bearing surface 13 arranged in the first direction Z, and the third bearing surface 13 is arranged between the first bearing surface 11 and the second bearing surface 12. The bearing member 10 is provided with a through hole 10a penetrating the third bearing surface 13 along the first direction Z, the swinging member 42 passes through the through hole 10a, and the third bearing surface 13 and the swinging member 42 abut against the shaft portion 91.
[0086] In the positioning device 100b, the first bearing surface 11 carries the plate portion 92, the first positioning mechanism 20 and the second bearing surface 12 cooperate to clamp the shaft portion 91 in the second direction X, and the swing member 42 and the first pressing block 31 cooperate to clamp the shaft portion 91 in the first direction Z, so as to position the workpiece 90 in the first direction Z and the second direction X. The swing member 42 is driven by the driving rod 41 to abut against the shaft portion 91, and the swing member 42 rotates around the axis L to make the contact surface 421 fit with the shaft portion 91, so as to improve the contact degree between the contact surface 421 and the shaft portion 91, thereby improving the positioning accuracy of the positioning device 100a.
[0087] Please also read Figure 7 In some embodiments, the first pressing block 31 is provided with a second pressing surface 312. When viewed along the third direction Y, the second pressing surface 312 is inclined relative to the third bearing surface 13, and is configured to simultaneously hold the shaft portion 91 toward the third bearing surface 13 and the second bearing surface 12. The second pressing surface 312 cooperates with the second bearing surface 12 to clamp the shaft portion 91 in the second direction X, and cooperates with the third bearing surface 13 to clamp the shaft portion 91 in the first direction Z.
[0088] Optionally, when viewed along the third direction Y, the second pressing surface 312 is inclined at an angle of 45°±5° relative to the third bearing surface 13 , so that the second pressing surface 312 can evenly apply pressure to the shaft portion 91 in the first direction Z and the second direction X.
[0089] It is understandable that the fourth positioning mechanism 50 may not be provided for the positioning device 100 b under the pressing action of the second pressing surface 312 .
[0090] It should be noted that, except for the above differences, the parameters of the positioning device 100b and the positioning device 100a are substantially the same, and reference may be made to the description of the positioning device 100a.
[0091] In summary, in the above positioning device (100a, 100b), the first bearing surface 11 carries the plate portion 92, the first positioning mechanism 20 and the second bearing surface 12 cooperate to clamp the shaft portion 91 in the second direction X, and the swing member 42 and the first pressure block 31 cooperate to clamp the shaft portion 91 in the first direction Z, so as to position the workpiece 90 in the first direction Z and the second direction X. The swing member 42 is driven by the driving rod 41 to abut against the shaft portion 91, and the swing member 42 rotates around the axis L to make the fitting surface 421 fit with the shaft portion 91, so as to improve the fitting degree between the fitting surface 421 and the shaft portion 91, thereby improving the positioning accuracy of the positioning device (100a, 100b).
[0092] In addition, those skilled in the art may also make other changes within the spirit of the present application. Of course, these changes made according to the spirit of the present application should be included in the scope disclosed in the present application.
Claims
1. A positioning device for positioning a workpiece, the workpiece having a shaft portion and a plate portion connected to each other, It is characterized in that The positioning device comprises: A bearing member, comprising a first bearing surface arranged in a first direction and a second bearing surface arranged in a second direction, the first direction being perpendicular to the second direction, the first bearing surface being configured to bear the plate portion, and the second bearing surface being configured to abut against the shaft portion; a first positioning mechanism, movably disposed on one side of the second bearing surface along the second direction, and configured to hold the shaft portion toward the second bearing surface; A second positioning mechanism includes a first pressing block, wherein the first pressing block is configured to be movably disposed on one side of the shaft portion along the first direction to abut against the shaft portion; The third positioning mechanism includes a driving rod and a swinging member, wherein the driving rod is configured to be movably arranged on the other side of the shaft portion along the first direction, one end of the swinging member is rotatably connected to the driving rod around an axis, the axial direction of the axis is perpendicular to the first direction, and the other end of the swinging member is provided with a fitting surface, which is configured to extend along the axial direction of the shaft portion and abut the shaft portion.
2. The positioning device according to claim 1, It is characterized in that The projection line of the axis on the fitting surface is a first reference line. The fitting surface includes a first area and a second area located on both sides of the first reference line. The first area and the second area are symmetrical with respect to the first reference line.
3. The positioning device according to claim 2, It is characterized in that The third positioning mechanism further comprises an axle pin, and one end of the driving rod is provided with a recess; The swinging member includes a swinging part and a connecting part, the fitting surface is provided on one side of the swinging part, the connecting part is fixed on the other side of the swinging part, the connecting part extends into the recess, the axle pin has the axis, the axle pin passes through the connecting part and is connected to the axle pin recess.
4. The positioning device according to claim 1, It is characterized in that The second bearing surface is configured to abut against a side of the shaft portion facing the plate portion, and the first positioning mechanism is configured to abut against a side of the shaft portion facing away from the second bearing surface; Along the first direction, the projection of the swinging member and the projection of the first pressing block are respectively located outside the projection of the bearing member, and the first pressing block is provided with a first pressing surface on a side facing the swinging member, and the first pressing surface is perpendicular to the first direction.
5. The positioning device according to claim 4, It is characterized in that The positioning device also includes a fourth positioning mechanism, which is movably arranged on one side of the second bearing surface along the second direction and is configured to abut the side of the shaft portion away from the second bearing surface. The fourth positioning mechanism and the second positioning mechanism are arranged along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.
6. The positioning device according to claim 1, It is characterized in that The second bearing surface is configured to abut against a side of the shaft portion away from the plate portion, and the first positioning mechanism abuts against a side of the plate portion away from the shaft portion; The supporting member also includes a third supporting surface arranged in the first direction, the third supporting surface is arranged between the first supporting surface and the second supporting surface, the supporting member is provided with a through hole passing through the third supporting surface along the first direction, the swinging member passes through the through hole, and the third supporting surface and the swinging member abut against the shaft portion.
7. The positioning device according to claim 6, It is characterized in that The first pressing block is provided with a second pressing surface, which is inclined relative to the third bearing surface and is configured to synchronously hold the shaft portion toward the third bearing surface and the second bearing surface.
8. The positioning device according to claim 1, It is characterized in that The positioning device further includes a fifth positioning mechanism, which is movably disposed on one side of the first bearing surface along the first direction and is configured to abut against a side of the plate portion facing away from the first bearing surface.
9. The positioning device according to claim 1, It is characterized in that The first bearing surface is concavely provided with an adsorption groove, and the adsorption groove is configured to adsorb the plate portion.
10. The positioning device according to claim 1, It is characterized in that The positioning mechanism further comprises a base and a support plate, wherein the support plate is rotatably connected to the base, and the bearing member, the first positioning mechanism, the second positioning mechanism and the third positioning mechanism are respectively connected to the support plate.