Probe switching and clamping mechanism and three-coordinate measuring machine

Abstract

This invention provides a probe adapter and clamping mechanism and a coordinate measuring machine, which solves the problems in existing technologies where the adapter cannot adjust the extension rod according to the position of the hole to be measured, and where the axial horizontality requirement of the hole to be measured is high during measurement. The probe adapter and clamping mechanism includes a locking mechanism, an extension rod, and an attitude adjustment mechanism. The attitude adjustment mechanism includes a first adjusting component, a second adjusting component, and a connecting assembly. The second adjusting component can rotate relative to the first adjusting component to adjust the pitch angle of the extension rod; the connecting assembly securely connects the rotated second adjusting component to the first adjusting component as a single unit. This probe adapter and clamping mechanism allows adjustment of the pitch angle of the extension rod according to the actual placement position of the part to be measured, eliminating the need for the deep hole axis to be perfectly horizontal during measurement, making measurement more convenient, flexible, and versatile.

Description

Technical Field

[0001] This invention relates to the field of measurement technology, specifically to a probe adapter and clamping mechanism used in deep hole measurement and a coordinate measuring machine having the probe adapter and clamping mechanism. Background Technology

[0002] In the field of measurement, we often encounter situations where we need to measure deep holes (deeper than 300mm) in complex parts such as engines, housings, and pipes. For example, we need to measure and evaluate the inner diameter, outer diameter, wall thickness, coaxiality, and other characteristics of the deep hole.

[0003] In this situation, the deep hole measurement is usually completed by adding an extension rod to the end of the Z-axis of the coordinate measuring machine. The axis of the extension rod is perpendicular to the Z-axis axis, and the probe is installed on the end of the extension rod. Driven by the motion mechanism of the coordinate measuring machine, the probe smoothly extends into the deep hole through the extension rod to automatically complete the deep hole measurement. Compared with the existing manual measurement, the measurement accuracy and efficiency are greatly improved.

[0004] Mounting an extension rod to the Z-axis end typically requires an adapter. One end of the extension rod is fixed to this adapter, which in turn is fixed to the Z-axis end, thus connecting the extension rod to the Z-axis. However, existing adapters only serve a connecting function and cannot adjust the extension rod according to the position of the hole to be measured on the part. During testing, it is necessary to ensure that the axial direction of the hole to be measured is horizontal to avoid interference or collision between the extension rod and the hole wall when it extends into the hole, which could affect measurement accuracy. Summary of the Invention

[0005] This invention provides a probe adapter and clamping mechanism and a coordinate measuring machine, which can solve the problems in the prior art where the adapter cannot adjust the extension rod according to the position of the hole to be measured, and the requirement for the axial horizontality of the hole to be measured is high during measurement.

[0006] To achieve the above-mentioned technical effects, the technical solution adopted by the probe transfer and clamping mechanism proposed in this invention is a probe transfer and clamping mechanism, comprising:

[0007] A locking mechanism, which is used to connect to the end of the Z-axis of a coordinate measuring machine;

[0008] An extension rod having a first end and a second end, the first end of which is used to connect a probe.

[0009] The attitude adjustment mechanism includes a first adjustment component, a second adjustment component, and a connecting assembly; the first adjustment component is connected to the locking mechanism; one end of the second adjustment component is connected to the second end of the extension rod, and the second adjustment component can rotate relative to the first adjustment component to adjust the pitch angle of the extension rod; the connecting assembly is used to securely connect the rotated second adjustment component to the first adjustment component as a whole.

[0010] The second adjusting component is provided with a first connecting part, and the first adjusting component is provided with a second connecting part, which are fitted together. The first connecting part has a first threaded hole and a second threaded hole that are circular and have horizontal axes. The second connecting part has a circular countersunk hole coaxial with the first threaded hole and a first elongated hole coaxial with the second threaded hole. The first elongated hole extends in a vertical direction. The connecting assembly includes a first screw and a second screw. The first screw passes through the circular countersunk hole and is engaged with the first threaded hole. The second screw passes through the first elongated hole and is engaged with the second threaded hole.

[0011] The second adjusting component is provided with a third connecting part, which is located below the second connecting part. The third connecting part has a horizontally extending second elongated hole, and the second connecting part has a circular third threaded hole with a vertical axis. The connecting component also includes a third screw, which passes through the second elongated hole and engages with the third threaded hole.

[0012] The locking mechanism is located above the attitude adjustment mechanism and includes:

[0013] A connecting component, which is at least used for connecting to the Z-axis end of the coordinate measuring machine, wherein a vertically extending cylindrical portion is formed on the connecting component, and the bottom end of the cylindrical portion is through;

[0014] A lifting component is disposed inside the cylindrical portion, the lifting component is configured to slide vertically only, and the first adjusting component is fixedly connected to the lifting component through the bottom end of the cylindrical portion;

[0015] A lever component, which is disposed within the cylindrical portion and hinged to the lifting component;

[0016] A driving component, which is disposed on the connecting component, is used to drive the lever component to rotate around a fixed fulcrum inside the cylindrical part, so as to drive the lifting component and the first adjusting component to rise and fall.

[0017] When the first adjusting component rises to abut against the bottom surface of the cylindrical part, the lever component stops rotating, the lifting component rises to its limit position, and the attitude adjustment mechanism is locked.

[0018] The connecting component includes an upper connecting seat and a lower connecting seat that are detachably and fixedly connected as one unit. The upper connecting seat has an upper cylindrical portion that extends downward and has a through bottom end. The lower connecting seat has a lower cylindrical portion that extends upward and has a through top end and a through bottom end. The upper cylindrical portion is sleeved around the lower cylindrical portion to jointly form the cylindrical portion. The lifting component is inserted into the lower cylindrical portion. A protrusion is formed on the side wall of the lever component. The protrusion can contact and abut against the top surface of the lower cylindrical portion. The fixed fulcrum is the contact point between the protrusion and the top surface of the lower cylindrical portion.

[0019] The lifting component includes a limiting part and a guide part located below the limiting part. The guide part is inserted into the lower cylindrical part and slides and guides the lower cylindrical part. The limiting part is located above the lower cylindrical part and is used to limit the extreme position of the lifting component when it descends.

[0020] The lever component has wedge-shaped surfaces formed on both opposite sides, and the wedge-shaped surfaces on the two opposite sides are inclined in opposite directions. The wedge-shaped surfaces are located above the hinge point of the lever component to provide clearance space for the rotation of the lever component.

[0021] The driving component is a set screw, which is arranged horizontally in the radial direction on the upper connecting seat. The set screw rotates into the cylindrical part to apply a rotational driving force to the lever.

[0022] A probe fixing block is connected to the first end of the extension rod. The probe is an optical probe and there are multiple probes. The multiple optical probes are arranged and installed on the probe fixing block in a circumferential manner.

[0023] The present invention also proposes a coordinate measuring machine, including a Z-axis and the aforementioned stylus transfer and clamping mechanism.

[0024] Compared with the prior art, the present invention has the following advantages and positive effects:

[0025] 1. The probe transfer and clamping mechanism of the present invention, on the one hand, extends the probe horizontally through the extension rod, which can smoothly insert the probe into the deep hole to complete the deep hole measurement, greatly improving the measurement accuracy and measurement efficiency;

[0026] 2. The first end of the extension rod is used to connect the probe, and the second end is connected to the second adjustment component of the attitude adjustment mechanism. The second adjustment component can rotate relative to the first adjustment component, so that the pitch angle of the extension rod can be adjusted according to the actual placement position of the part to be measured. The second adjustment component, which has been rotated to the position, is fastened to the first adjustment component as a whole through the connecting assembly. This ensures that the second adjustment component and the extension rod can be positioned in the adjusted position. When the probe is inserted into the deep hole of the part to be measured using the probe transfer and clamping mechanism of the present invention, it is not necessary to ensure that the axis of the deep hole is completely horizontal, making the measurement more convenient, flexible, and versatile. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is the overall assembly drawing of the probe transfer and clamping mechanism in an embodiment of the present invention;

[0029] Figure 2 for Figure 1 Enlarged view of Part I;

[0030] Figure 3 This is an assembly diagram of the attitude adjustment mechanism in an embodiment of the present invention;

[0031] Figure 4 This is an exploded view of the attitude adjustment mechanism in an embodiment of the present invention;

[0032] Figure 5 This is a perspective view of the second adjustment component of the attitude adjustment mechanism in an embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the attitude adjustment mechanism in an embodiment of the present invention when the pitch angle of the extension rod is positive.

[0034] Figure 7 This is a schematic diagram of the structure of the attitude adjustment mechanism in an embodiment of the present invention when the pitch angle of the extension rod is negative;

[0035] Figure 8 This is an assembly diagram of the locking mechanism in an embodiment of the present invention;

[0036] Figure 9 This is an exploded view of the locking mechanism in an embodiment of the present invention;

[0037] Figure 10This is a schematic diagram of the arrangement structure of the lifting component and the lever component on the lower connecting seat in an embodiment of the present invention;

[0038] Figure 11 This is a cross-sectional view of the upper connecting seat in an embodiment of the present invention;

[0039] Figure 12 This is a bottom perspective view of the lower connecting seat in an embodiment of the present invention;

[0040] Figure 13 This is a perspective view of the extension rod in an embodiment of the present invention;

[0041] Figure 14 This is a perspective view of the probe fixing block in an embodiment of the present invention;

[0042] Figure 15 This is a perspective view of the connector in an embodiment of the present invention.

[0043] Reference numerals: 100, locking mechanism; 110, connecting component; 111, upper connecting seat; 112, lower connecting seat; 113, upper cylindrical part; 114, lower cylindrical part; 115, radial threaded hole; 116, locating pin; 117, finished surface; 120, lifting component; 121, limiting part; 122, guide part; 123, through groove; 130, lever component; 131, protrusion; 132, wedge-shaped surface; 140, driving component; 150, pin; 200, attitude adjustment mechanism; 210, first adjusting component; 220, second... Adjustment component; 230, first connecting part; 231, first threaded hole; 232, second threaded hole; 240, second connecting part; 241, circular countersunk hole; 242, first elongated hole; 250, first screw; 260, second screw; 270, third connecting part; 271, second elongated hole; 280, third screw; 290, connector; 2100, screw; 300, extension rod; 310, first end; 320, second end; 400, configuration rod; 500, probe fixing block; 510, probe mounting hole; 520, set screw mounting hole. Detailed Implementation

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0046] Reference Figures 1 to 7 This embodiment provides a probe transfer and clamping mechanism, which includes a locking mechanism 100, an extension rod 300, and an attitude adjustment mechanism 200.

[0047] The locking mechanism 100 is used to connect the entire probe transfer and clamping mechanism to the Z-axis end of the coordinate measuring machine, specifically to the probe at the Z-axis end.

[0048] The extension rod 300 has the same structure as existing technology and is used to extend the probe into a deep hole. Along its length, the extension rod 300 has a first end 310 and a second end 320. The first end 310 is used to connect the probe, and the second end 320 is connected to the second adjustment component 220 of the attitude adjustment mechanism 200, thereby connecting the extension rod 300 and the probe to the attitude adjustment mechanism 200. The extension rod 300 is a straight rod with a circular cross-section, or at least one section of it is a straight rod. It is installed horizontally, i.e., perpendicular to the Z-axis of the coordinate measuring machine. The extension rod 300 can be provided with various length and diameter specifications, and different specifications of the extension rod 300 can be used to adapt to different deep hole measurements.

[0049] As the depth of the hole increases, the length of the extension rod 300 required also increases. Since the extension rod 300 is cantilevered after installation, its deflection will inevitably affect the measurement accuracy of the probe. To reduce the deflection of the extension rod 300, in this embodiment, the extension rod 300 is a hollow carbon fiber rod. Hollow carbon fiber rods have high strength, low deformation, and are lightweight, effectively reducing the deflection of the extension rod 300. Furthermore, the outer diameter of the extension rod 300 can gradually decrease from the second end 320 to the first end 310, i.e., the extension rod 300 is a tapered rod, which also helps to reduce its weight and thus reduce deflection; alternatively, several through-holes can be arranged on the extension rod 300, which also helps to reduce weight and thus reduce deflection. The hollow extension rod 300 also facilitates the routing of the probe wire.

[0050] The attitude adjustment mechanism 200 includes a first adjustment component 210, a second adjustment component 220, and a connecting assembly; the first adjustment component 210 is connected to the locking mechanism 100; one end of the second adjustment component 220 is connected to the second end 320 of the extension rod 300, and the second adjustment component 220 can rotate relative to the first adjustment component 210 to adjust the pitch angle of the second adjustment component 220, that is, the angle between the axis a of the second adjustment component 220 and the horizontal plane L, such as... Figure 6 and Figure 7 As shown, this allows adjustment of the pitch angle of the extension rod 300. The connecting assembly is used to securely connect the second adjusting component 220, which has been rotated into position, to the first adjusting component 210 as a single unit.

[0051] The probe adapter and clamping mechanism of this embodiment includes an attitude adjustment mechanism 200. Its second adjustment component 220 can rotate relative to the first adjustment component 210, thereby driving the extension rod 300 to rotate relative to the first adjustment component 210. This allows the pitch angle of the extension rod 300 to be finely adjusted within a certain angle range according to the actual placement position of the part to be measured, thereby finely adjusting the probe attitude. The second adjustment component 220 and the extension rod 300 are positioned in the adjusted position through the connecting component. Therefore, when the probe is inserted into the deep hole of the part to be measured using the probe adapter and clamping mechanism of this embodiment, it is not necessary to ensure that the axis of the deep hole is completely horizontal, making the measurement more convenient, flexible, and versatile.

[0052] Furthermore, such as Figures 3 to 5 As shown, the second adjusting component 220 is provided with a first connecting part 230, and the first adjusting component 210 is provided with a second connecting part 240. The first connecting part 230 and the second connecting part 240 are fitted together. The first connecting part 230 has a first threaded hole 231 and a second threaded hole 232 with horizontal axes. The axes of the first threaded hole 231 and the second threaded hole 232 are parallel and both are circular holes. The second connecting part 240 has a circular countersunk hole 241 coaxial with the first threaded hole 231 and a first elongated hole 242 coaxial with the second threaded hole 232. The first elongated hole 242 extends in a vertical direction. The connecting assembly includes a first screw 250 and a second screw 260. The first screw 250 passes through the circular countersunk hole 241 and is connected to the first threaded hole 231. The second screw 260 passes through the first elongated hole 242 and is connected to the second threaded hole 232. To make the second adjusting component 220 rotate relative to the first adjusting component 210, simply loosen the first screw 250 and the second screw 260, and then rotate the second adjusting component 220 around the first screw 250 as the central axis. The first elongated hole 242 provides clearance for the rotation of the second adjusting component 220. After rotating to the correct position, tighten the first screw 250 and the second screw 260 to secure the second adjusting component 220 to the first adjusting component 210.

[0053] Specifically, both the first connecting part 230 and the second connecting part 240 are vertical plates. The second connecting part 240 extends upward toward the first adjusting member 210, and the first connecting part 230 extends toward one of the left and right sides of the second adjusting member 220. The vertical plate shape of the first connecting part 230 and the second connecting part 240 is beneficial to improving the fitting accuracy of the two, and also facilitates screw connection and improves connection reliability.

[0054] To further improve the ease of adjustment, in this embodiment, the second adjustment component 220 is provided with a third connecting part 270, which is located below the second connecting part 240. The third connecting part 270 has a horizontally extending second elongated hole 271, and the second connecting part 240 has a third threaded hole (not shown) with a vertical axis. The third threaded hole is a round hole. The connecting component also includes a third screw 280, which passes through the second elongated hole 271 and is connected to the third threaded hole. When adjusting the second adjusting component 220, simply loosen the first screw 250 and the second screw 260, and then rotate the third screw 280 to drive the second adjusting component 220 to rotate relative to the first adjusting component 210 around the first screw 250 as the central axis. The first elongated hole 242 and the second elongated hole 271 provide clearance for the rotation of the second adjusting component 220, so that the second screw 260 and the third screw 280 do not affect the rotation of the second adjusting component 220. After rotating to the correct position, tighten the first screw 250 and the second screw 260 to secure the second adjusting component 220 to the first adjusting component 210.

[0055] like Figures 3 to 7 As shown, both the first adjusting component 210 and the second adjusting component 220 are cylindrical. The first adjusting component 210 is vertically arranged, and the second adjusting component 220 is horizontally arranged. The second end 320 of the extension rod 300 is connected by a cylindrical connector 290 (e.g., Figure 15 (As shown) Connected to one end of the second adjusting component 220, one end of the connector 290 is fitted and fixedly connected to the second end 320 of the extension rod 300. In this embodiment, a threaded connection is used for easy assembly and disassembly. The other end of the connector 290 has a connecting protrusion, which is fastened to the end screw of the second adjusting component 220 through the connecting protrusion. The first adjusting component 210 is fastened to the lifting component 120 of the locking mechanism 100 described below by a vertically upward screw 2100.

[0056] A counterweight bar is installed at the other end of the second adjustment component 220. The weight and center of gravity of the counterweight bar 400 are roughly equivalent to the combined weight and center of gravity of the extension bar 300 and related components such as the probe, which helps to ensure horizontal center of gravity balance. The appropriate counterweight bar can be selected according to the specifications of the selected extension bar 300.

[0057] Therefore, the attitude adjustment mechanism 200 in this embodiment has a simple structure, is easy to implement, and has low cost.

[0058] In the prior art, the connection between the adapter and the Z-axis end of the coordinate measuring machine is usually directly fastened with screws. However, when tightening the screws, the friction between the screw and the threaded hole causes the adapter to move, that is, the adapter rotates slightly as the screw rotates, which causes the position of the extension rod 300 and the probe to change, affecting the measurement accuracy.

[0059] To solve this problem in the existing technology, refer to Figures 8 to 15 In this embodiment, the locking mechanism 100 is located above the attitude adjustment mechanism 200, and includes a connecting component 100, a lifting component 120, a lever component 130, and a driving component 140.

[0060] The connecting component 100 is used to connect to the Z-axis end of the coordinate measuring machine at least. That is, the entire locking mechanism 100 is connected to the Z-axis end of the coordinate measuring machine through its connecting component 100. A vertically extending cylindrical portion is formed on the connecting component 100, and the bottom end of the cylindrical portion is through.

[0061] The lifting component 120 is located inside the cylindrical part. The lifting component 120 is configured to slide up and down only in the vertical direction. In this embodiment, it slides up and down along the axial direction of the cylindrical part. The first adjusting component 210 is fixed to the lifting component 120 through the through bottom end of the cylindrical part by a screw 2100, so that the attitude adjustment mechanism 200, together with the extension rod 300 and the probe, can slide up and down in the vertical direction with the lifting component 120.

[0062] The lever component 130 is located inside the cylindrical portion and is hinged to the lifting component 120.

[0063] The driving component 140 is provided on the connecting component 100 and is used to drive the lever component 130 to rotate around a fixed fulcrum A inside the cylindrical part. When the lever component 130 rotates around the fixed fulcrum A, since it is hinged to the lifting component 120 and the lifting component 120 is configured to slide up and down only in the vertical direction, the lever component 130 can drive the lifting component 120 to rise and fall when it rotates around the fixed fulcrum A, thereby driving the first adjusting component 210 to rise and fall.

[0064] When the first adjusting component 210 rises to the bottom surface of the cylindrical part, the lever component 130 stops rotating, the lifting component 120 rises to the limit position, the attitude adjustment mechanism 200 is locked, and the position of the extension rod 300 and the probe is fixed.

[0065] In this embodiment, the locking mechanism 100 drives the lever component 130 to rotate by operating the driving component 140, thereby driving the lifting component 120 to rise, thereby pulling and fixing the posture adjustment mechanism 200, extension rod 300 and probe below. This avoids the problem in the prior art where directly tightening the screw to fix the adapter seat would cause the adapter seat, extension rod 300 and probe to rotate, affecting the measurement accuracy.

[0066] The cylindrical part is specifically a circular cylinder, and the lifting component 120 and the first adjusting component 210 are both coaxially arranged with the cylindrical part.

[0067] Furthermore, the connecting component 100 includes an upper connecting seat 111 and a lower connecting seat 112 that are detachably and integrally fixed together, such as... Figure 9 and Figure 10 As shown, the upper connecting seat 111 has an upper cylindrical portion 113 extending downward and penetrating to the bottom. The overall outline of the upper connecting seat 111 is T-shaped. Multiple mounting holes are arranged circumferentially along the upper horizontal portion. It is installed on the probe at the Z-axis end of the coordinate measuring machine by means of screw fastening. The lower connecting seat 112 has a lower cylindrical portion 114 extending upward and penetrating to both the top and bottom ends. The overall outline of the lower connecting seat 112 is T-shaped. The upper cylindrical portion 113 is sleeved around the lower cylindrical portion 114 to jointly form the aforementioned cylindrical portion. The lifting component 120 is inserted into the lower cylindrical portion 114. A protrusion 131 is formed on the side wall of the lever component 130. The protrusion 131 can contact and abut against the top surface of the lower cylindrical portion 114. The fixed fulcrum A is the contact point between the protrusion 131 and the top surface of the lower cylindrical portion 114. By setting the connecting component 100 into upper and lower parts, it is convenient to assemble the internal components, and at the same time, it is convenient for the lever component 130 to form a lever structure.

[0068] Specifically, the inner wall of the upper cylindrical portion 113 has internal threads, and the outer wall of the lower cylindrical portion 114 has external threads. The upper connecting seat 111 and the lower connecting seat 112 are connected by a threaded engagement for easy assembly and disassembly. The lever component 130 and the lifting component 120 are hinged by a pin 150. The hinge point is located at the lower part of the lever component 130 and the upper part of the lifting component 120. The protrusion 131 is located below one side of the hinge point. Figure 9 From the perspective shown, when the lever component 130 rotates clockwise around the fixed fulcrum A, it drives the lifting component 120 to rise and slide. When the lifting component 120 slides down under its own weight, the lever component 130 rotates counterclockwise around the fixed fulcrum A. When the lifting component 120 rises to its limit position, the first adjusting component 210 rests its top surface against the bottom surface of the lower cylindrical portion 114, as shown. Figure 12As shown, the bottom end face of the lower cylindrical part 114 is a precision-machined surface 117. The first adjustment component 210 has its top surface in close contact with this precision-machined surface, and the attitude adjustment mechanism 200 is kept directionally stable in the horizontal plane by friction.

[0069] Furthermore, the lifting component 120 includes a limiting part 121 and a guide part 122 located below the limiting part 121. The guide part 122 is inserted into the lower cylindrical part 114 and slides and guides with the lower cylindrical part 114. The limiting part 121 is located above the lower cylindrical part 114 and is used to limit the extreme position of the lifting component 120 when it descends. In this embodiment, the limiting part 121 is specifically an annular protrusion with a diameter larger than the diameter of the top surface of the lower cylindrical part 114. When the lifting component 120 descends to the point where the limiting part 121 abuts against the top surface of the lower cylindrical part 114, the lifting component 120 has descended to its extreme position and can no longer descend. This ensures that the lifting component 120 will not detach from the lower cylindrical part 114 under its own weight and the gravity of the lower structural components, thus ensuring operational reliability. Meanwhile, a through groove 123 is formed on the upper section of the guide part 122, which is open to the left and right and faces upward. The lower part of the lever part 130 is inserted into the through groove 123, and then the lever part 130 is hinged to the lifting part 120 by the pin 150.

[0070] like Figure 10 As shown, wedge-shaped surfaces 132 are formed on both opposite sides of the lever component 130, and the wedge-shaped surfaces 132 on the two opposite sides are inclined in opposite directions. The wedge-shaped surfaces 132 are located above the hinge point of the lever component 130, which can provide clearance space for the rotation of the lever component 130.

[0071] In this embodiment, the driving component 140 is a set screw, which is arranged horizontally in the radial direction on the upper connecting seat 111. The set screw rotates and extends into the cylindrical part to apply a rotational driving force to the lever. Specifically, as shown... Figure 9 and Figure 11 As shown, the upper connecting seat 111 has a radial threaded hole 115 that mates with a set screw. One end of the radial threaded hole 115 communicates with the outside, and the other end communicates with the internal space of the cylindrical part. The set screw is screwed into this radial threaded hole 115, and its inner end contacts the top of the compression lever component 130, thereby driving the lever component 130 to rotate around the fixed fulcrum A, thereby driving the lifting component 120 to rise. When the set screw is turned outward, the inner end of the set screw separates from the lever component 130, and the lever component 130 will return to its original position under the weight of the lifting component 120 and the attitude adjustment mechanism 200 below. This structure is simple, easy to implement, has light component weight, and puts little burden on the Z-axis of the measuring machine.

[0072] like Figures 9 to 11As shown, the upper connecting seat 111 is also provided with a radially arranged positioning pin 116. The inner end of the positioning pin 116 extends into the cylindrical part and into the through groove 123, thereby restricting the circumferential rotation of the lifting component 120, so that the lifting component 120 can only move vertically, thereby preventing the lever component 130 from rotating circumferentially with the lifting component 120. When the set screw hits the lever component 130, it can ensure that the lever component 130 is not misaligned under force.

[0073] In this embodiment, the probe is specifically an optical probe, and there are multiple probes, such as... Figure 1 , Figure 14 and Figure 15 As shown, a probe fixing block 500 is connected to the first end 310 of the extension rod 300. The probe fixing block 500 is short columnar and has multiple probe mounting holes 510 parallel to its axial direction. Multiple optical probes are inserted into the corresponding probe mounting holes 510 and positioned by set screws in the radially corresponding set screw mounting holes 520. The multiple optical probes are arranged circumferentially. By setting multiple optical probes and arranging them circumferentially, when measuring the same deep hole, multiple optical probes can be used alternately in different directions to improve the detection accuracy and avoid repeated disassembly of the optical probes.

[0074] Specifically, the probe fixing block 500 is also connected to the first end 310 of the extension rod 300 via a cylindrical connector 290. One end of the connector 290 is fitted and fixedly connected to the first end 310 of the extension rod 300, and the other end is fixedly connected to the probe fixing block 500 via screws. This connector 290 has the same structure as the connector 290 used to connect the second end 320 of the extension rod 300 and the second adjusting component 220; the two are mirror images of each other and will not be described in detail here.

[0075] This embodiment also proposes a coordinate measuring machine, including a Z-axis, with the aforementioned stylus adapter and clamping mechanism mounted on the end of the Z-axis. The stylus is mounted on the stylus adapter and clamping mechanism. For details of the stylus adapter and clamping mechanism, please refer to the embodiment and appendix of the stylus adapter and clamping mechanism of this invention. Figures 1 to 15 The description will not be repeated here.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A probe adapter and clamping mechanism, characterized in that, include: A locking mechanism, which is used to connect to the end of the Z-axis of a coordinate measuring machine; An extension rod having a first end and a second end, the first end of which is used to connect a probe. The attitude adjustment mechanism includes a first adjustment component, a second adjustment component, and a connecting assembly; the first adjustment component is connected to the locking mechanism; one end of the second adjustment component is connected to the second end of the extension rod, and the second adjustment component can rotate relative to the first adjustment component to adjust the pitch angle of the extension rod; the connecting assembly is used to fasten the second adjustment component, which has been rotated into position, to the first adjustment component as a whole. The locking mechanism is located above the attitude adjustment mechanism and includes: A connecting component, which is at least used for connecting to the Z-axis end of the coordinate measuring machine, wherein a vertically extending cylindrical portion is formed on the connecting component, and the bottom end of the cylindrical portion is through; A lifting component is disposed inside the cylindrical portion, the lifting component is configured to slide vertically only, and the first adjusting component is fixedly connected to the lifting component through the bottom end of the cylindrical portion; A lever component, which is disposed within the cylindrical portion and hinged to the lifting component; A driving component, which is disposed on the connecting component, is used to drive the lever component to rotate around a fixed fulcrum inside the cylindrical part, so as to drive the lifting component and the first adjusting component to rise and fall. When the first adjusting component rises to abut against the bottom surface of the cylindrical part, the lever component stops rotating, the lifting component rises to its limit position, and the attitude adjustment mechanism is locked. The connecting component includes an upper connecting seat and a lower connecting seat that are detachably and fixedly connected as one unit. The upper connecting seat has an upper cylindrical part that extends downward and has a through bottom end. The lower connecting seat has a lower cylindrical part that extends upward and has a through top end and a through bottom end. The upper cylindrical part is sleeved around the lower cylindrical part to jointly form the cylindrical part. The lifting component is inserted into the lower cylindrical part. A protrusion is formed on the side wall of the lever component. The protrusion can contact and abut against the top surface of the lower cylindrical part. The fixed fulcrum is the contact point between the protrusion and the top surface of the lower cylindrical part. The lifting component includes a limiting part and a guide part located below the limiting part. The guide part is inserted into the lower cylindrical part and slides and guides the lower cylindrical part. The limiting part is located above the lower cylindrical part and is used to limit the extreme position of the lifting component when it descends.

2. The probe transfer and clamping mechanism according to claim 1, characterized in that, The second adjusting component is provided with a first connecting part, and the first adjusting component is provided with a second connecting part, which are fitted together. The first connecting part has a first threaded hole and a second threaded hole that are circular and have horizontal axes. The second connecting part has a circular countersunk hole coaxial with the first threaded hole and a first elongated hole coaxial with the second threaded hole. The first elongated hole extends in a vertical direction. The connecting assembly includes a first screw and a second screw. The first screw passes through the circular countersunk hole and is engaged with the first threaded hole. The second screw passes through the first elongated hole and is engaged with the second threaded hole.

3. The probe transfer and clamping mechanism according to claim 2, characterized in that, The second adjusting component is provided with a third connecting part, which is located below the second connecting part. The third connecting part has a horizontally extending second elongated hole, and the second connecting part has a circular third threaded hole with a vertical axis. The connecting component also includes a third screw, which passes through the second elongated hole and engages with the third threaded hole.

4. The probe transfer and clamping mechanism according to claim 1, characterized in that, The lever component has wedge-shaped surfaces formed on both opposite sides, and the wedge-shaped surfaces on the two opposite sides are inclined in opposite directions. The wedge-shaped surfaces are located above the hinge point of the lever component to provide clearance space for the rotation of the lever component.

5. The probe transfer and clamping mechanism according to claim 1, characterized in that, The driving component is a set screw, which is arranged horizontally in the radial direction on the upper connecting seat. The set screw rotates into the cylindrical part to apply a rotational driving force to the lever.

6. The probe transfer and clamping mechanism according to claim 1, characterized in that, A probe fixing block is connected to the first end of the extension rod. The probe is an optical probe and there are multiple probes. The multiple optical probes are arranged and installed on the probe fixing block in a circumferential manner.

7. A coordinate measuring machine, comprising a Z-axis, characterized in that, It also includes the probe transfer and clamping mechanism according to any one of claims 1 to 6.

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