CN220051465U - Positioning assembly, positioning device and zero point positioning clamping system - Google Patents

Abstract

The utility model relates to a locating component, positioner and zero point location clamping system. The positioning device comprises a body, a positioning bolt, a positioning sleeve ring and a central shaft sleeve. The body has a body central bore. The positioning bolt is inserted into the central hole of the body and comprises a positioning part, the positioning part comprises an upper annular surface and an outer annular surface, and the outer annular surface is connected with the upper annular surface. The positioning collar is sleeved on the positioning bolt and comprises a top surface and a supporting ring part. The top surface is arranged on the upper ring surface of the positioning part. The support ring part integrally extends from the top surface along the axis of the positioning bolt and is arranged on the outer ring surface of the positioning part in a ring mode, wherein the support ring part is provided with an outer surface, and the outer surface and the axis of the positioning bolt form a first angle. The center shaft sleeve is arranged in the center hole of the body and is annularly arranged between the center hole of the body and the positioning lantern ring, the center shaft sleeve is provided with an inner surface, and the inner surface clamps a second angle with the axis of the positioning bolt. Therefore, the stability of clamping the object can be improved.

Description

Positioning assembly, positioning device and zero point positioning clamping system

Technical Field

The present utility model relates to positioning assemblies, positioning devices, and positioning systems, and more particularly, to a positioning assembly, a positioning device, and a zero point positioning clamping system for positioning objects.

Background

With the pursuit of industry for yield and precision, related industries have developed zero point positioning systems, thereby fixing objects such as jigs or workpieces at an origin position, facilitating precise industrial processes and avoiding positional deviations of the objects. However, the positioning bolt of the connecting object has high precision required by manufacturing, and the existing zero point positioning system may cause abrasion of the positioning bolt or the body due to manufacturing tolerance or in the use process, so that the zero point positioning system loses the positioning function, and the practical application cost of the zero point positioning system is increased.

In view of this, a zero point positioning system that can avoid tolerances or wear and can be used for a long period of time remains a goal of common efforts by related industries.

Disclosure of Invention

An object of the present utility model is to provide a positioning device and a zero-point positioning clamping system, wherein a positioning element forming a zero gap through a positioning bolt, a positioning collar and a central shaft sleeve is fixed on a body, and the positioning accuracy of the positioning bolt can be maintained through the deformation of the positioning collar and the central shaft sleeve. Therefore, the stability of the positioning object can be improved.

According to one embodiment of the present utility model, a positioning device for positioning an object is provided, wherein the positioning device comprises a body, a positioning bolt, a positioning collar and a central shaft sleeve. The body is provided with a body center hole. The positioning bolt is inserted into the central hole of the body and used for limiting the object, wherein the positioning bolt comprises a positioning part, the positioning part comprises an upper annular surface and an outer annular surface, and the outer annular surface is connected with the upper annular surface. The positioning collar is sleeved on the positioning bolt and comprises a top surface and a supporting ring part. The top surface is arranged on the upper ring surface of the positioning part. The support ring part integrally extends from the top surface along an axis of the positioning bolt and is arranged on an outer ring surface of the positioning part in a ring mode, wherein the support ring part is provided with an outer surface, and the outer surface and the axis of the positioning bolt form a first angle. The central shaft sleeve is arranged in the central hole of the body and is annularly arranged between the central hole of the body and the positioning collar, and the central shaft sleeve is provided with an inner surface, wherein the inner surface and the axis of the positioning bolt form a second angle. When the positioning bolt moves from a release position to a fastening position along the axis by an external force, the inner surface of the central shaft sleeve is propped against the outer surface of the supporting ring part, so that the inner surface is attached to the outer surface.

The positioning device according to the embodiment of the preceding paragraph, wherein the positioning collar has a maximum outer diameter, the central hub has a maximum inner diameter, and the maximum outer diameter is greater than the maximum inner diameter.

The positioning device according to the embodiment of the preceding paragraph, wherein the ratio between the difference between the maximum outer diameter of the positioning collar and the maximum inner diameter of the central hub and the maximum inner diameter is between 0.0175% and 0.0425%.

The positioning device according to the embodiment of the preceding paragraph, wherein a ratio between a difference between the first angle and the second angle is between 0.15% and 0.2%.

The positioning device according to the embodiment of the preceding paragraph, wherein the supporting ring portion has a minimum thickness, an end of the central shaft sleeve near the top surface has a first thickness, an end of the central shaft sleeve far from the top surface has a second thickness, the minimum thickness is smaller than the first thickness, and the first thickness is smaller than the second thickness.

The positioning device according to the embodiment of the preceding paragraph, wherein the positioning pin further includes a pushing portion integrally connected to the positioning portion, and a diameter of the pushing portion is tapered from the positioning portion.

The positioning device according to the embodiment of the preceding paragraph, wherein the positioning collar has an elastic structure or a rigid structure, and the central shaft sleeve has an elastic structure or a rigid structure.

The positioning device according to the embodiment of the preceding paragraph further comprises a directional assembly comprising a directional element, a directional collar and a directional sleeve. The orientation element is arranged on the body, wherein the orientation element comprises an orientation part, the orientation part is provided with a bearing ring surface and an outward ring surface, and the bearing ring surface is connected with the outward ring surface. The orientation collar is sleeved on the orientation element and comprises an orientation top surface and an orientation ring part. The directional top surface is arranged on the bearing ring surface. The orientation ring portion integrally extends from the orientation top surface along an axis of the orientation element and is disposed around the orientation outer annular surface, wherein the orientation ring portion has an orientation outer surface, and the orientation outer surface forms a third angle with the axis of the orientation element. The directional sleeve is arranged on the directional sleeve ring in a surrounding way, and is provided with a directional inner surface, wherein the directional inner surface forms a fourth angle with the axis of the directional element.

According to one embodiment of the present utility model, a positioning assembly is provided for positioning an object, which includes a positioning pin, a positioning collar, and a center sleeve. The positioning bolt is used for limiting the object, wherein the positioning bolt comprises a positioning part, the positioning part comprises an upper annular surface and an outer annular surface, and the outer annular surface is connected with the upper annular surface. The positioning collar is sleeved on the positioning bolt and comprises a top surface and a supporting ring part. The top surface is arranged on the upper ring surface of the positioning part. The support ring part integrally extends from the top surface along an axis of the positioning bolt and is arranged on an outer ring surface of the positioning part in a ring mode, wherein the support ring part is provided with an outer surface, and the outer surface and the axis of the positioning bolt form a first angle. The central shaft sleeve is arranged on the positioning sleeve, the central shaft sleeve is provided with an inner surface, the inner surface is at a second angle with the axis clamp of the positioning bolt, and the inner surface of the central shaft sleeve is propped against the outer surface of the supporting ring part.

According to one embodiment of the present utility model, a zero-point positioning clamping system is provided, which is disposed on a machine and includes a base, a plurality of positioning devices and an object. The base is arranged on the machine table. The positioning devices are arranged on the base, and each positioning device comprises a body, a positioning bolt, a positioning lantern ring and a central shaft sleeve. The body is provided with a body center hole. The positioning bolt is inserted into the central hole of the body, wherein the positioning bolt comprises a positioning part, the positioning part comprises an upper annular surface and an outer annular surface, and the outer annular surface is connected with the upper annular surface. The positioning collar is sleeved on the positioning bolt and comprises a top surface and a supporting ring part. The top surface is arranged on the upper ring surface of the positioning part. The support ring part integrally extends from the top surface along an axis of the positioning bolt and is arranged on an outer ring surface of the positioning part in a ring mode, wherein the support ring part is provided with an outer surface, and the outer surface and the axis of the positioning bolt form a first angle. The central shaft sleeve is arranged in the central hole of the body and is annularly arranged between the central hole of the body and the positioning collar, and the central shaft sleeve is provided with an inner surface, wherein the inner surface and the axis of the positioning bolt form a second angle. The object is connected to each positioning bolt. When each positioning bolt moves from a release position to a fastening position along each axis by an external force, the inner surface of each central shaft sleeve is propped against the outer surface of each supporting ring part, and each positioning bolt limits the object to a zero position.

The zero position clamping system according to the embodiment of the preceding paragraph, wherein the positioning collar has a maximum outer diameter, the central hub has a maximum inner diameter, and the maximum outer diameter is greater than the maximum inner diameter.

The zero-point positioning clamping system according to the embodiment of the preceding paragraph, wherein the support ring portion has a minimum thickness, the end of the central shaft sleeve near the top surface has a first thickness, the end of the central shaft sleeve far from the top surface has a second thickness, the minimum thickness is smaller than the first thickness, and the first thickness is smaller than the second thickness.

Drawings

Fig. 1 shows a schematic perspective view of a positioning device according to a first embodiment of the present utility model;

fig. 2 shows an exploded schematic view of a positioning device according to the first embodiment of fig. 1;

fig. 3 shows a schematic cross-sectional view of the positioning device according to the first embodiment of fig. 1 along section line 3-3;

FIG. 4A shows a schematic cross-sectional view of a positioning collar according to the first embodiment of FIG. 3;

FIG. 4B shows a schematic cross-sectional view of the center hub according to the first embodiment of FIG. 3;

FIG. 5A is a schematic cross-sectional view of the positioning collar and the center hub in a release position according to the first embodiment of FIG. 3;

FIG. 5B is a schematic cross-sectional view showing the positioning collar and the center hub in a fastening position according to the first embodiment of FIG. 3;

FIG. 6 is a schematic cross-sectional view showing the positioning collar sleeved on the positioning pin propping against the central shaft sleeve according to the second embodiment of the present utility model;

FIG. 7 is a schematic cross-sectional view showing a positioning collar sleeved on a positioning bolt propping against a central shaft sleeve according to a third embodiment of the present utility model;

FIG. 8 is a schematic cross-sectional view showing a positioning collar sleeved on a positioning bolt propping against a central shaft sleeve according to a fourth embodiment of the present utility model;

fig. 9 shows a schematic perspective view of a zero point positioning clamping system according to a fifth embodiment of the present utility model;

FIG. 10 is a schematic perspective view showing a positioning device according to a sixth embodiment of the present utility model applied to an automatic workbench switching system;

fig. 11 shows a schematic perspective view of a zero point positioning clamping system according to a seventh embodiment of the present utility model;

FIG. 12 shows a schematic cross-sectional view of a zero point positioning clamping system along section line 12-12 in accordance with the seventh embodiment of FIG. 11; and

fig. 13 shows an exploded schematic view of a directional assembly according to the seventh embodiment of fig. 12.

Symbol description

10: machine table

100. 300: zero point positioning clamping system

110. 310: article (B)

120. 220, 320, 1000: positioning device

130. 230, 330: base seat

131: joint

1100: body

1110: body center hole

1120: clamping component

1200. 2200, 3200, 4200: positioning bolt

1210: positioning part

1211: upper ring surface

1212. 2212, 3212: outer ring surface

1220: pushing part

1230: bottom part

1300. 2300, 3300, 4300: positioning collar

1310: top surface

1311: annular groove

1320. 2320, 3320: support ring portion

1321: outer surface

1330: supporting ring part

1400. 2400, 3400, 4400: center shaft sleeve

1410: inner surface

1500: supporting bolt

1600: piston seat

1610: compression spring

1700: o-ring

200: automatic exchange system of workbench

210: working table

2420: outer groove

4500: elastic collar

5000: directional assembly

5100: directional element

5110: orientation part

5111: directional outer annulus

5112: bearing ring surface

5120: directional rod

5200: directional lantern ring

5210: oriented top surface

5220: directional ring

5221: oriented outer surface

5300: directional shaft sleeve

5310: orienting the inner surface

a1: maximum outer diameter

a2: maximum inside diameter

d1: minimum thickness of

d2: first thickness of

d3: second thickness of

F1, F2: direction of propping

I1 and I2: an axis line

W1: spacing of

θ1: first angle of

θ2: second angle

Detailed Description

Referring to fig. 1, 2 and 3, fig. 1 is a perspective view of a positioning device 1000 according to a first embodiment of the present utility model, fig. 2 is an exploded view of the positioning device 1000 according to the first embodiment of fig. 1, and fig. 3 is a cross-sectional view of the positioning device 1000 according to the first embodiment of fig. 1 along a section line 3-3. As shown in fig. 1 to 3, the positioning device 1000 is used for positioning an object, and the positioning device 1000 includes a body 1100, a positioning pin 1200, a positioning collar 1300, and a central shaft sleeve 1400. The body 1100 has a body central aperture 1110. The positioning pin 1200 is inserted into the central hole 1110 of the body and is used for limiting an object, wherein the positioning pin 1200 comprises a positioning portion 1210, the positioning portion 1210 comprises an upper annular surface 1211 and an outer annular surface 1212, and the outer annular surface 1212 is connected to the upper annular surface 1211. The positioning collar 1300 is sleeved on the positioning pin 1200 and includes a top surface 1310 and a supporting ring portion 1320. The top surface 1310 is disposed on the upper annular surface 1211 of the positioning portion 1210. The support ring 1320 integrally extends from the top surface 1310 along an axis I1 of the positioning pin 1200 and is disposed around the outer ring surface 1212 of the positioning portion 1210, wherein the support ring 1320 has an outer surface 1321 (shown in fig. 4A), and the outer surface 1321 forms a first angle θ1 with the axis I1 of the positioning pin 1200 (shown in fig. 4A). The center sleeve 1400 is disposed in the body center hole 1110 and is disposed around the body center hole 1110 and the positioning collar 1300, and the center sleeve 1400 has an inner surface 1410 (shown in fig. 4B), wherein the inner surface 1410 forms a second angle θ2 with the axis I1 of the positioning pin 1200 (shown in fig. 4B). When the positioning pin 1200 moves from a release position to a fastening position along the axis I1 by an external force, the inner surface 1410 of the central shaft sleeve 1400 abuts against the outer surface 1321 of the support ring 1320, such that the inner surface 1410 is attached to the outer surface 1321.

The object may be a jig or a workpiece, when the positioning pin 1200 of the sleeve setting positioning collar 1300 is inserted into the body center hole 1110, the outer surface 1321 of the supporting ring portion 1320 contacts the inner surface 1410 of the center shaft sleeve 1400, and when the positioning pin 1200 moves down to the fastening position along the axis I1 by an external force, the positioning collar 1300 and the center shaft sleeve 1400 deform due to the mutual abutment, and the gap between the positioning collar 1300 and the center shaft sleeve 1400 disappears, thereby positioning the positioning pin 1200 in the fastening position. The positioning element forming zero clearance between the positioning pin 1200, the positioning collar 1300 and the central hub 1400 is fixed to the body 1100. By deforming the positioning collar 1300 and the central shaft sleeve 1400, when the object has tolerance or dimensional error caused by thermal expansion and contraction, the deformation can absorb the error, so that the object can be accurately positioned. Details of the structure of the positioning device 1000 will be described in detail below.

The body 1100 may further comprise three clamping members 1120 radially penetrating the body 1100 and protruding into the body central hole 1110, and the clamping members 1120 are arranged at intervals around the axis I1. One end of the holding member 1120 has a bevel structure. The positioning pin 1200 may further comprise a pushing portion 1220 integrally connected to the positioning portion 1210, and the diameter of the pushing portion 1220 is tapered from the positioning portion 1210. The inclined surface structure of the clamping member 1120 is used for pushing the pushing portion 1220. When the inclined surface structure of the clamping member 1120 radially abuts against the pushing portion 1220, the positioning pin 1200 is further pushed to move downward along the axis I1. The shape of the inclined surface structure of the clamping member 1120 corresponds to the shapes of the pushing portion 1220 and the bottom portion 1230, and by pushing the positioning pin 1200 by the three clamping members 1120 at the same time, the positioning pin 1200 can be stably pushed to move along the axis I1, and the positioning pin 1200 is prevented from being shifted due to radial shaking. Thereby, the shock resistance of the positioning device 1000 can be improved. In other embodiments, the positioning device can be pushed to move by other elements such as steel balls, which is not limited in this utility model.

The positioning pin 1200 may further comprise a bottom portion 1230 integrally connected to the pushing portion 1220, and the diameter of the bottom portion 1230 increases from the pushing portion 1220.

The positioning device 1000 may further comprise a push pin 1500, a piston seat 1600, and an O-ring 1700. The abutment pin 1500 is connected to the bottom 1230 of the positioning pin 1200 and is used to push against the piston seat 1600. The piston seat 1600 includes a plurality of compression springs 1610 configured to urge against the piston seat 1600. Further, the positioning device 1000 may be connected to an air compressor, and compressed air is input into the positioning device 1000 through the air compressor, so as to push the piston seat 1600 to move upwards, thereby driving the clamping member 1120 to move radially and away from the positioning pin 1200, and the linking pushing bolt 1500 pushes the positioning pin 1200 upwards along the axis I1 to move to the release position, such that the positioning collar 1300 and the central shaft sleeve 1400 have a gap; when the compressed air is released from the positioning device 1000, the restoring force of the compression spring 1610 drives the piston seat 1600 to move downward, thereby driving the clamping member 1120 to push against the positioning pin 1200, so that the positioning pin 1200 moves from the release position to the fastening position along the axis I1. An O-ring 1700 is disposed over the body central bore 1110 and surrounds the central hub 1400. By the arrangement of the O-ring 1700, the center hub 1400 can be further positioned and dust protected. In other embodiments, the positioning device may move the positioning bolt to the release position or the fastening position by other mechanisms, which is not limited in this utility model.

Referring to fig. 4A and 4B in combination, fig. 4A is a schematic cross-sectional view of a positioning collar 1300 according to the first embodiment of fig. 3, and fig. 4B is a schematic cross-sectional view of a center bushing 1400 according to the first embodiment of fig. 3. As shown in fig. 3, 4A and 4B, the positioning collar 1300 may further include a propping ring 1330, which is located on the bottom surface of the positioning collar 1300 and integrally disposed on the inner side of the supporting ring 1320, and a boss is formed by radially protruding outward between the outer ring 1212 of the positioning pin 1200 and the propping portion 1220, wherein the propping ring 1330 is propped against the boss. By arranging the propping ring 1330 on the bottom surface of the positioning collar 1300, the structural strength of the positioning collar 1300 can be increased, and the positioning collar 1300 is prevented from being damaged in the deformation process. The positioning collar 1300 may have a maximum outer diameter a1 (i.e., the outer diameter of the top surface 1310), and the center hub 1400 may have a maximum inner diameter a2, with the maximum outer diameter a1 being greater than the maximum inner diameter a2. Therefore, when the positioning bolt 1200 is inserted into the body center hole 1110, the positioning collar 1300 and the center shaft sleeve 1400 are propped against each other, and the positioning collar 1300 is forced to be compressed and deformed inwards, so that the gap between the positioning collar 1300 and the center shaft sleeve 1400 is eliminated. Further, the ratio (a 1-a 2)/a 2 between the difference between the maximum outer diameter a1 of the positioning collar 1300 and the maximum inner diameter a2 of the central shaft sleeve 1400 and the maximum inner diameter a2 (i.e. the interference coefficient between the positioning collar 1300 and the central shaft sleeve 1400) may be between 0.0175% and 0.0425%. Thereby, the deformation amount larger than the stress variation bearable by the positioning collar 1300 and the central shaft sleeve 1400 caused by the overlarge interference can be avoided, and the positioning collar 1300 and the central shaft sleeve 1400 are damaged.

The first angle θ1 between the outer surface 1321 of the support ring 1320 and the axis I1 of the positioning pin 1200 is an acute angle smaller than 90 degrees, such that the outer surface 1321 of the support ring 1320 is radially inclined along the axis I1 from the positioning portion 1210 to the bottom 1230; the second angle θ2, which is defined by the inner surface 1410 of the center sleeve 1400 and the axis I1 of the positioning pin 1200, is an acute angle of less than 90 degrees, such that the inner surface 1410 increases radially in the direction from the positioning portion 1210 to the bottom portion 1230 along the axis I1. By having the outer surface 1321 and the inner surface 1410 disposed diagonally, the positioning collar 1300 may further fit the center hub 1400 downward along the direction of the axis I1. Thereby, the fit between the positioning collar 1300 and the center bushing 1400 may be increased. Further, the ratio (θ1- θ2)/θ2 between the difference between the first angle θ1 and the second angle θ2 may be between 0.15% and 0.2%. Thereby, the fit between the positioning collar 1300 and the center bushing 1400 can be further increased.

As shown in fig. 4A and 4B, the supporting ring portion 1320 may have a minimum thickness d1 (i.e. the thickness of the bottom end of the supporting ring portion 1320), the end of the central shaft sleeve 1400 near the top surface 1310 has a first thickness d2, the end of the central shaft sleeve 1400 far from the top surface 1310 has a second thickness d3, the minimum thickness d1 is smaller than the first thickness d2, and the first thickness d2 is smaller than the second thickness d3. Through the configuration of thickness, when inner surface 1410 is attached to outer surface 1321, support ring portion 1320 and center sleeve 1400 are mutually propped against each other to generate deformation, the deformation of the end of center sleeve 1400 away from top surface 1310 is smaller than the deformation of the end of center sleeve 1400 near top surface 1310, and the deformation of the end of center sleeve 1400 near top surface 1310 is smaller than the deformation of the bottom end of support ring portion 1320, thereby increasing the attachment degree of inner surface 1410 attached to outer surface 1321.

The top surface 1310 of the positioning collar 1300 may include an annular recess 1311 disposed around the top surface 1310. The concave-convex surface of the top surface 1310 provides a gap between the portion of the support ring 1320 and the outer ring surface 1212, thereby providing a space for deformation of the positioning collar 1300 to reduce the stress applied to the positioning collar 1300 during deformation. Thereby, the service life of the positioning collar 1300 can be improved. Furthermore, the bottom surface of the supporting ring 1320 is not in contact with the positioning pin 1200, in other words, the positioning collar 1300 only contacts the upper ring surface 1211 and the outer ring surface 1212 of the positioning portion 1210, but the present utility model is not limited thereto.

Referring to fig. 5A and 5B in combination, fig. 5A is a schematic cross-sectional view illustrating the positioning collar 1300 and the center bushing 1400 in the release position according to the first embodiment of fig. 3, and fig. 5B is a schematic cross-sectional view illustrating the positioning collar 1300 and the center bushing 1400 in the fastening position according to the first embodiment of fig. 3. When the clamping member 1120 is not pushed against the stop pin 1200, the stop pin 1200 is in the released position as shown in fig. 5A, the outer surface 1321 does not fully engage the inner surface 1410, such that there is a space W1 between the top of the stop collar 1300 and the top of the center hub 1400. When the clamping member 1120 pushes the positioning bolt 1200, the positioning bolt 1200 moves down along the axis I1 to a fastening position, so as to drive the positioning collar 1300 and the central shaft sleeve 1400 to abut against each other, the portion of the positioning collar 1300 near the top surface 1310 is compressed and deformed along one abutting direction F1 by the annular groove 1311, and the portion of the supporting ring portion 1320 of the positioning collar 1300 is compressed inward along the other abutting direction F2, so that the inner surface 1410 is completely adhered to the outer surface 1321, and the interval W1 is eliminated. Thereby, the positioning pin 1200, the positioning collar 1300 and the central shaft sleeve 1400 form a zero-clearance positioning element, and the positioning stability is increased.

In the first embodiment, the positioning collar 1300 may have a resilient structure, and the center sleeve 1400 has a rigid structure. In other embodiments, the positioning collar may have a rigid structure and be matched with the central shaft sleeve having an elastic structure or a rigid structure, for example, the positioning collar having a rigid structure is matched with the central shaft sleeve having a rigid structure, which is not limited in this utility model.

Referring to fig. 6, fig. 6 is a schematic cross-sectional view illustrating a positioning collar 2300 sleeved on a positioning bolt 2200 according to a second embodiment of the present utility model abutting against a central shaft sleeve 2400. As shown in fig. 6, in the second embodiment, the structure and arrangement of other elements of the positioning device, such as the body and the abutment pin, are the same as those of the first embodiment, and only the positioning pin 2200, the positioning collar 2300, and the center bushing 2400 of the second embodiment are shown. It should be noted that, the positioning collar 2300 and the central shaft sleeve 2400 have elastic structures, the central shaft sleeve 2400 may include an outer groove 2420 surrounding the outer surface of the central shaft sleeve 2400, and a gap is formed between the outer ring 2212 of the positioning pin 2200 and the supporting ring 2320 of the positioning collar 2300, so as to increase the deformation space of the positioning collar 2300 and the central shaft sleeve 2400, and avoid the deformation of the positioning collar 2300 and the central shaft sleeve 2400 from losing elasticity due to excessive stress. Furthermore, the bottom surface of the support ring 2320 contacts the positioning pin 2200, so that the positioning collar 2300 can be stably sleeved on the positioning pin 2200.

Referring to fig. 7, fig. 7 is a schematic cross-sectional view illustrating a positioning collar 3300 sleeved on a positioning pin 3200 according to a third embodiment of the present utility model abutting against a central shaft sleeve 3400. In the third embodiment, the structure and arrangement of the positioning pin 3200, the positioning collar 3300 and the central shaft sleeve 3400 are similar to those of the positioning pin 2200, the positioning collar 2300 and the central shaft sleeve 2400 of the second embodiment, in particular, the positioning collar 3300 has a rigid structure, the central shaft sleeve 3400 has an elastic structure, and the outer ring surface 3212 of the positioning pin 3200 is attached to the support ring portion 3320 of the positioning collar 3300. In other words, there is no gap between the outer ring face 3212 and the support ring portion 3320, thereby avoiding wear between the rigid structural locating collar 3300 and the outer ring face 3212.

Referring to fig. 8, fig. 8 is a schematic cross-sectional view illustrating a positioning collar 4300 sleeved on a positioning pin 4200 according to a fourth embodiment of the present utility model abutting against a central shaft sleeve 4400. In the fourth embodiment, the structure and arrangement of the positioning pin 4200, the positioning collar 4300, and the center bushing 4400 are similar to those of the positioning pin 2200, the positioning collar 2300, and the center bushing 2400 of the second embodiment, and particularly, the positioning collar 4300 has an elastic structure, the center bushing 4400 has a rigid structure, further, the positioning collar 4300 is made of an elastic material, and the positioning apparatus of the fourth embodiment may further include an elastic collar 4500 disposed between the positioning collar 4300 and the center bushing 4400, and a bottom surface of the positioning collar 4300 is in contact with the positioning pin 4200, and a bottom surface of the elastic collar 4500 is in partial contact with the positioning pin 4200. Thus, the positioning pin 4200, the positioning collar 4300 and the elastic collar 4500 can form a gapless elastic element that abuts against the central shaft sleeve 4400 to be positioned on the body of the positioning device.

Referring to fig. 9, fig. 9 is a schematic perspective view of a zero point positioning clamping system 100 according to a fifth embodiment of the present utility model. As shown in fig. 9, the zero-point positioning clamping system 100 is disposed on a machine 10, and includes a base 130, a plurality of positioning devices 120, and an object 110, which is illustrated as a clamp for clamping a workpiece. The base 130 is disposed on the machine 10. The positioning device 120 is disposed on the base 130, and the positioning device 120 may be the positioning device 1000 of the first embodiment or the positioning devices of the second to fourth embodiments, but the present utility model is not limited thereto. The object 110 may be a fixture, but the present utility model is not limited thereto. The object 110 is connected to a positioning pin of the positioning device 120. When each of the positioning pins of the positioning device 120 is moved from a release position to a fastening position along the axis by an external force, the positioning pins limit the object 110 to a zero position. The base 130 may include two joints 131 that are connected to an air compressor, and the air compressor inputs or releases compressed air to the positioning device 120 through one joint 131, so that the piston seat moves and pushes the positioning pin to move to the release position or the fastening position. Further, the two connectors 131 may be a loose end connector and a pressurized end connector, respectively. The user can input compressed air through the loosening end connector, so that the piston seat pushes the positioning bolt to a release position; and when the locating bolt moves to the fastening position, and the user needs to further fix the locating bolt to the fastening position, the air compressor is connected to the accessible pressure boost end socket to further apply compressed air and promote the piston seat to move downwards, increase the intensity of centre gripping locating bolt downwardly moving, but this novel not limit to this. The positioning device 120 can accurately position the object 110 through the zero clearance element formed by the positioning bolt, the positioning collar and the central shaft sleeve, so that the positioning bolt in the reference, directional and clamping modes required by the existing positioning device is avoided, the effect of positioning the object can be achieved through combination of a plurality of modes, and therefore the difficulty of the design of the zero positioning clamping system can be simplified, and the positioning accuracy and stability can be improved.

Referring to fig. 10, fig. 10 is a schematic perspective view illustrating an application of a positioning device 220 according to a sixth embodiment of the present utility model to a table auto-exchange system 200. As shown in fig. 10, the automatic table switching system 200 includes a table 210, a plurality of positioning devices 220, and a base 230. The workbench 210 is detachably disposed on the positioning device 220. The positioning device 220 is disposed on the base 230, and the positioning device 220 may be the positioning device 1000 of the first embodiment or the positioning devices of the second to fourth embodiments, but the present utility model is not limited thereto. When the positioning pins of each positioning device 220 are moved from a release position to a fastening position along the axis by an external force, the positioning pins, the positioning collar and the central shaft sleeve form zero clearance elements. When the workbench 210 is detached and mounted on the positioning device 220 again, the positioning device 220 can precisely position the position of the workbench 210, thereby avoiding the need of positioning bolts in the reference, orientation and clamping modes of the conventional positioning device, and achieving the effect of positioning objects in a plurality of modes. Therefore, the difficulty of system design can be simplified, and the positioning accuracy and stability can be improved. In other embodiments, the positioning device can be applied to any working system requiring accurate positioning, and the present utility model is not limited to the above system.

Referring to fig. 11, 12 and 13, fig. 11 is a perspective view of a zero point positioning clamping system 300 according to a seventh embodiment of the present utility model, fig. 12 is a cross-sectional view of the zero point positioning clamping system 300 according to the seventh embodiment of fig. 11 along a section line 12-12, and fig. 13 is an exploded view of an orientation assembly 5000 according to the seventh embodiment of fig. 12. As shown in fig. 11 to 13, the zero-point positioning clamping system 300 includes an object 310, a positioning device 320, and a base 330. The positioning device 320 is disposed on the base 330 and is used for positioning the object 310. In the seventh embodiment, the object 310 is a workpiece, and the positioning device 320 is similar to the positioning device 1000 of the first embodiment or the positioning devices of the second to fourth embodiments in structure and configuration, but the present utility model is not limited thereto. In particular, the positioning device 320 may further comprise an orientation assembly 5000. The orientation assembly 5000 includes an orientation element 5100, an orientation collar 5200, and an orientation sleeve 5300. The orientation element 5100 is disposed on the body of the positioning device 320, wherein the orientation element 5100 comprises an orientation portion 5110 and an orientation rod 5120, and the orientation rod 5120 is disposed through the orientation portion 5110. The orientation portion 5110 has a bearing ring 5112 and an outer orientation ring 5111, wherein the bearing ring 5112 is connected to the outer orientation ring 5111. The orientation collar 5200 is sleeved on the orientation element 5100 and includes an orientation top surface 5210 and an orientation ring portion 5220. The directional top surface 5210 is disposed against the annular face 5112. The orientation ring portion 5220 integrally extends from the orientation top surface 5210 along an axis I2 of the orientation element 5100 and is looped around the orientation outer annular surface 5111, wherein the orientation ring portion 5220 has an outwardly facing surface 5221, and the orientation outer surface 5221 makes a third angle with the axis I2 of the orientation element 5100. The orienting sleeve 5300 is annularly configured to the collar 5200, the orienting sleeve 5300 having an orienting inner surface 5310, wherein the orienting inner surface 5310 is disposed at a fourth angle to the axis I2 of the orienting element 5100. The third angle and the fourth angle may be equal to the first angle θ1 and the second angle θ2 of the first embodiment, respectively, which are not described herein. Further, the body of the positioning device 320 may include an orientation groove, the orientation element 5100 is disposed in the orientation groove, and the orientation sleeve 5300 is disposed between the orientation groove and the orientation collar 5200. By tightly coupling the orientation collar 5200 with the orientation sleeve 5300, the orientation element 5100 can be precisely positioned over the orientation slot of the positioning device 320. And the positioning device 320 can fix the angle and direction of the object 310 relative to the positioning device through the positioning pin and the orientation component 5000, thereby positioning the object 310 on the zero point through a single positioning device 320, and reducing the cost without requiring a plurality of positioning devices to position the object as in the prior art. It should be noted that, the structure of the orientation collar 5200 is the same as that of the orientation collar 1300, the structure of the orientation sleeve 5300 is the same as that of the central sleeve 1400, and the difference is only that the dimensions are different, but the present utility model is not limited thereto.

In other embodiments, the positioning pin, the positioning collar and the central shaft sleeve of the present utility model may form a positioning assembly for positioning objects, and may be disposed in other devices, but not necessarily disposed in the body 1100 of the positioning device 1000 according to the first embodiment, which is not limited thereto. Therefore, the positioning component capable of being positioned accurately can be provided.

Although the present utility model has been described with reference to the above embodiments, it should be understood that the utility model is not limited thereto, but can be modified and finished by any person skilled in the art without departing from the spirit and scope of the utility model.

Claims (12)

1. A positioning device for positioning an object, the positioning device comprising:

a body having a body center hole;

the positioning bolt is inserted into the central hole of the body and used for limiting the object, wherein the positioning bolt comprises a positioning part, the positioning part comprises an upper annular surface and an outer annular surface, and the outer annular surface is connected with the upper annular surface;

a positioning collar, which is sleeved on the positioning bolt and comprises:

the top surface is arranged on the upper ring surface of the positioning part; and

The support ring part integrally extends from the top surface along an axis of the positioning bolt and is annularly arranged on the outer ring surface of the positioning part, wherein the support ring part is provided with an outer surface, and the outer surface and the axis of the positioning bolt form a first angle; and

the central shaft sleeve is arranged in the central hole of the body and is annularly arranged between the central hole of the body and the positioning sleeve ring, and the central shaft sleeve is provided with an inner surface, wherein the inner surface and the shaft clamp of the positioning bolt form a second angle;

when the positioning bolt moves from a release position to a fastening position along the axis under an external force, the inner surface of the central shaft sleeve is propped against the outer surface of the supporting ring part, so that the inner surface is attached to the outer surface.

2. The positioning device of claim 1 wherein the positioning collar has a maximum outer diameter and the central hub has a maximum inner diameter, the maximum outer diameter being greater than the maximum inner diameter.

3. The positioning device of claim 2 wherein the ratio between the difference between the maximum outer diameter of the positioning collar and the maximum inner diameter of the center hub and the maximum inner diameter is between 0.0175% and 0.0425%.

4. The positioning device of claim 1, wherein a ratio between a difference between the first angle and the second angle is between 0.15% and 0.2%.

5. The positioning device of claim 1, wherein the support ring portion has a minimum thickness, the end of the central hub adjacent to the top surface has a first thickness, the end of the central hub remote from the top surface has a second thickness, the minimum thickness is less than the first thickness, and the first thickness is less than the second thickness.

6. The positioning device of claim 1, wherein the positioning pin further comprises a pushing portion integrally connected to the positioning portion, and a diameter of the pushing portion is tapered from the positioning portion.

7. The positioning device of claim 1 wherein the positioning collar has a resilient structure or a rigid structure and the central hub has the resilient structure or the rigid structure.

8. The positioning device of claim 1 further comprising an orientation assembly comprising:

the orientation element is arranged on the body and comprises an orientation part, the orientation part is provided with a bearing annular surface and an orientation outer annular surface, and the bearing annular surface is connected with the orientation outer annular surface;

a directional collar, sleeved on the directional element and comprising:

a directional top surface arranged on the bearing ring surface; and

The orientation ring part integrally extends from the orientation top surface along an axis of the orientation element and is annularly arranged on the orientation outer ring surface, wherein the orientation ring part is provided with an orientation outer surface, and the orientation outer surface and the axis of the orientation element form a third angle; and

the orientation sleeve is arranged around the orientation sleeve ring and is provided with an orientation inner surface, wherein the orientation inner surface forms a fourth angle with the axis of the orientation element.

9. A positioning assembly for positioning an object, the positioning assembly comprising:

the positioning bolt is used for limiting the object and comprises a positioning part, wherein the positioning part comprises an upper annular surface and an outer annular surface, and the outer annular surface is connected with the upper annular surface;

a positioning collar, which is sleeved on the positioning bolt and comprises:

the top surface is arranged on the upper ring surface of the positioning part; and

The support ring part integrally extends from the top surface along an axis of the positioning bolt and is annularly arranged on the outer ring surface of the positioning part, wherein the support ring part is provided with an outer surface, and the outer surface and the axis of the positioning bolt form a first angle; and

the central shaft sleeve is arranged around the positioning collar and is provided with an inner surface, wherein the inner surface is at a second angle with the axis clamp of the positioning bolt, and the inner surface of the central shaft sleeve is propped against the outer surface of the supporting ring part.

10. A zero point location clamping system is arranged on a machine, and is characterized by comprising:

the base is arranged on the machine;

the positioning devices are arranged on the base, and each positioning device comprises:

a body having a body center hole;

the positioning bolt is inserted into the central hole of the body, wherein the positioning bolt comprises a positioning part, the positioning part comprises an upper annular surface and an outer annular surface, and the outer annular surface is connected with the upper annular surface;

a positioning collar, which is sleeved on the positioning bolt and comprises:

the top surface is arranged on the upper ring surface of the positioning part; and

The support ring part integrally extends from the top surface along an axis of the positioning bolt and is annularly arranged on the outer ring surface of the positioning part, wherein the support ring part is provided with an outer surface, and the outer surface and the axis of the positioning bolt form a first angle; and

the central shaft sleeve is arranged in the central hole of the body and is annularly arranged between the central hole of the body and the positioning sleeve ring, and the central shaft sleeve is provided with an inner surface, wherein the inner surface and the shaft clamp of the positioning bolt form a second angle; and

an object connected to each positioning bolt;

when each positioning bolt moves from a release position to a fastening position along each axis by an external force, the inner surface of each central shaft sleeve is propped against the outer surface of each supporting ring part, and each positioning bolt limits the object at a zero position.

11. The zero positioning clamping system of claim 10 wherein the positioning collar has a maximum outer diameter and the central hub has a maximum inner diameter, the maximum outer diameter being greater than the maximum inner diameter.

12. The zero positioning clamping system of claim 10, wherein the support ring has a minimum thickness, the end of the central hub adjacent to the top surface has a first thickness, the end of the central hub remote from the top surface has a second thickness, the minimum thickness is less than the first thickness, and the first thickness is less than the second thickness.