Probe replacing frame of gantry three-coordinate measuring machine

Abstract

The utility model discloses a probe replacing frame of a gantry three-coordinate measuring machine, which comprises a movable seat, an upper adjusting plate and a lower adjusting plate which are stacked up and down, and a leveling assembly is arranged between the upper adjusting plate and the lower adjusting plate; the leveling assembly comprises a hollow screw, a fastening screw is inserted into the hollow screw, and the bottom of the fastening screw extends out of the hollow screw; a concave ball pad is fixed on the lower adjusting plate, and a convex ball pad is matched with the concave ball pad; the hollow screw is inserted from the upper adjusting plate, the bottom of the hollow screw abuts against the convex ball pad, and the fastening screw penetrates through the convex ball pad and the concave ball pad and is inserted into the lower adjusting plate. According to the leveling assembly, the moving seat can be conveniently and rapidly leveled, the replacement frame can be installed on the relatively horizontal moving seat, then the probe can be installed on the relatively horizontal replacement frame, and the installation precision of the probe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gantry measuring machines, in particular to a measuring needle replacement rack of a gantry three-coordinate measuring machine. Background Art

[0002] Three-dimensional coordinate measuring machine is widely used in machinery, electronics, instrumentation, plastics and other industries. Three-dimensional coordinate measuring machine is one of the most effective methods to measure and obtain dimensional data. It can replace a variety of surface measurement tools and expensive combination gauges, and reduce the time required for complex measurement tasks from hours to minutes, which is an effect that other instruments cannot achieve.

[0003] The three-dimensional coordinate measuring machine in the prior art has the following problems: the mounting frame for mounting the measuring probe is relatively bulky, which makes it inconvenient to level the mounting frame and to adjust the front and rear (Y direction) and left and right (X direction) positions of the mounting frame, resulting in low installation accuracy of the measuring probe, and thus relatively poor applicability and convenience of the gantry three-dimensional coordinate measuring machine when used. Summary of the invention

[0004] The utility model aims to provide a stylus replacement rack for a gantry three-dimensional coordinate measuring machine, which can realize convenient and quick leveling of a moving seat, so that the replacement rack can be installed on a relatively horizontal moving seat, and then the stylus can be installed on a relatively horizontal replacement rack, thereby improving the installation accuracy of the stylus.

[0005] To this end, the utility model provides a probe replacement rack for a gantry three-dimensional coordinate measuring machine, comprising a fixed seat; a movable seat, comprising an upper adjustment plate and a lower adjustment plate stacked up and down, a leveling assembly is provided between the upper adjustment plate and the lower adjustment plate; the leveling assembly comprises a hollow screw, a fastening screw is inserted into the interior of the hollow screw, and the bottom of the fastening screw extends out of the hollow screw; a concave ball pad is fixed to the lower adjustment plate, and a convex ball pad is matched on the concave ball pad; the hollow screw is inserted from the upper adjustment plate and its bottom abuts against the convex ball pad, and the fastening screw passes through the convex ball pad and the concave ball pad and is inserted into the lower adjustment plate.

[0006] Preferably, the upper adjustment plate is provided with an upper threaded hole, and the lower adjustment plate is provided with a lower threaded hole corresponding to the upper threaded hole; the hollow screw is connected in the upper threaded hole, and the fastening screw is connected in the lower threaded hole.

[0007] Preferably, the diameter of the upper threaded hole is larger than the diameter of the lower threaded hole.

[0008] Preferably, a groove is provided on the upper surface of the lower adjustment plate, and the groove is communicated with the lower threaded hole; and the concave ball pad is fixed in the groove.

[0009] Preferably, two nuts are sleeved on the hollow screw, and the two nuts are in tight contact with the upper surface and the lower surface of the upper adjustment plate respectively.

[0010] Preferably, there are multiple leveling components, and the multiple leveling components are symmetrically arranged on the moving base.

[0011] Preferably, the fixing seat comprises a fixing support, and a slide groove is provided on the upper surface of the fixing support; a sliding block is connected to the bottom surface of the lower adjusting plate, and the sliding block can be slidably fitted in the slide groove.

[0012] Preferably, the lower adjustment plate is provided with a countersunk hole, and the slider is provided with a connecting hole corresponding to the countersunk hole; a screw is connected between the countersunk hole and the connecting hole to achieve the connection between the slider and the lower adjustment plate.

[0013] Preferably, the end of the fixed support is connected to a base plate, and the base plate is connected to a column of the gantry three-dimensional coordinate measuring machine.

[0014] Preferably, a replacement rack is connected to the upper adjustment plate, a measuring needle slot is connected to the replacement rack, and the measuring needle slot is used to connect the measuring needle.

[0015] Compared with the prior art, the advantages and positive effects of the utility model are as follows: the utility model provides a stylus replacement rack for a gantry three-dimensional coordinate measuring machine, including a fixed seat; a movable seat, including an upper adjustment plate and a lower adjustment plate stacked up and down, a leveling assembly is provided between the upper adjustment plate and the lower adjustment plate; the leveling assembly includes a hollow screw, a fastening screw is inserted into the interior of the hollow screw, and the bottom of the fastening screw extends out of the hollow screw; a concave ball pad is fixed on the lower adjustment plate, and a convex ball pad is matched on the concave ball pad; the hollow screw is inserted from the upper adjustment plate and the bottom abuts against the convex ball pad, and the fastening screw passes through the convex ball pad and the concave ball pad and is inserted into the lower adjustment plate. Through the leveling assembly of the utility model, the movable seat can be conveniently and quickly leveled, the replacement rack can be installed on a relatively horizontal movable seat, and then the stylus can be installed on a relatively horizontal replacement rack, thereby improving the installation accuracy of the stylus.

[0016] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of a measuring needle replacement frame of a gantry three-coordinate measuring machine of the utility model;

[0018] Figure 2 It is a structural schematic diagram of an embodiment of a measuring needle replacement frame of a gantry three-coordinate measuring machine of the utility model;

[0019] Figure 3 It is a structural schematic diagram of an embodiment of the fixed support of the utility model;

[0020] Figure 4 It is a structural schematic diagram of an embodiment of the bottom plate of the utility model;

[0021] Figure 5 It is a structural schematic diagram of an embodiment of the lower adjustment connecting plate of the utility model;

[0022] Figure 6 It is a structural schematic diagram of an embodiment of the slider of the utility model;

[0023] Figure 7 It is a cross-sectional schematic diagram of an embodiment of the slider of the utility model;

[0024] Figure 8 It is a structural schematic diagram of an embodiment of the upper adjustment plate of the utility model;

[0025] Fig. 9 It is a structural schematic diagram of an embodiment of the leveling assembly of the utility model;

[0026] Fig.10 It is a structural schematic diagram of an embodiment of the leveling component of the utility model. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] like Figure 1-Figure 10 As shown, the probe replacement rack of the gantry three-dimensional coordinate measuring machine of the utility model includes a fixed seat; a movable seat, including a lower adjustment plate 10 and an upper adjustment plate 20 arranged in parallel, a leveling component is provided between the lower adjustment plate 10 and the upper adjustment plate 20; the leveling component includes a hollow screw 31, a fastening screw 32 is inserted into the hollow screw 31, and the bottom of the fastening screw 32 extends out of the hollow screw 31; a concave ball pad 11 is fixed on the lower adjustment plate 10, and a convex ball pad 12 is matched on the concave ball pad 11; the hollow screw 31 is inserted from the upper adjustment plate and the bottom abuts against the convex ball pad 12, and the fastening screw 32 passes through the convex ball pad 12 and the concave ball pad 11 and is inserted into the lower adjustment plate 10.

[0029] The leveling assembly of the utility model can realize convenient and quick leveling of the movable seat, so that the replacement frame can be installed on a relatively horizontal movable seat, and then the measuring needle can be installed on a relatively horizontal replacement frame, thereby improving the installation accuracy of the measuring needle.

[0030] The upper adjusting plate 20 is provided with an upper threaded hole 21, and the lower adjusting plate 10 is provided with a lower threaded hole 13 corresponding to the upper threaded hole 21; the hollow screw 31 is connected in the upper threaded hole 21, and the fastening screw 32 is connected in the lower threaded hole 13. The aperture of the upper threaded hole 21 is larger than the aperture of the lower threaded hole 13.

[0031] The hollow screw 31 may be a M12 hollow fine-thread screw commonly used in the technical field, and the fastening screw 32 may be a M8 screw commonly used in the technical field, and no specific limitation is made here. The corresponding upper threaded hole 21 may have a hole diameter of 12 mm, so that the hollow screw 31 can be firmly connected to the upper threaded hole 21; the hole diameter of the lower threaded hole 13 may be 8 mm, so that the fastening screw 32 can be firmly connected to the lower threaded hole 13.

[0032] A groove 14 is provided on the upper surface of the lower adjustment plate 10, and the groove 14 is connected to the lower threaded hole 13; the concave ball pad 11 is fixed in the groove 14, and the fixing method can be a common fixing method in the technical field, and no specific limitation is made here.

[0033] The groove 14 is circular, and the diameter of the groove 14 is larger than the diameter of the lower threaded hole 13 .

[0034] The concave ball pad 11 can be a common concave ball pad in the technical field, and no specific limitation is made here. The fixing method can be a common method in the technical field, and no specific limitation is made here.

[0035] The convex ball pad 12 can be a convex ball pad in the technical field, and no specific limitation is made here. The concave ball pad 11 and the convex ball pad 12 are matched to form a hollow cylindrical pad.

[0036] In this embodiment, the concave ball pad 11 is fixed in the groove 14 and cannot be displaced; the convex ball pad 12 is placed on the concave ball pad 11 and the convex ball pad 12 is consistent with the concave ball pad 11; under the action of external force, the convex ball pad 12 can be offset relative to the concave ball pad 11.

[0037] Two nuts 33 are sleeved on the hollow screw 31, and the two nuts 33 are respectively in close contact with the upper surface and the lower surface of the upper adjustment plate 20. The hollow screw 31 can be tightened by the two nuts 33, so that the hollow screw 31 is firmly connected to the upper connecting plate 20.

[0038] There are multiple leveling components, and the multiple leveling components are symmetrically arranged on the moving seat, so that the moving seat can be evenly stressed and can achieve uniform and effective leveling of the moving seat.

[0039] In this embodiment, the number of the leveling components is three, and the number of the three leveling components can form an isosceles triangle or an equilateral triangle, which is not specifically limited here.

[0040] Before leveling, the fastening screw 32 is not tightened, and the two nuts 33 are not tightened, so that the hollow screw 31 can rotate.

[0041] When leveling, the three hollow screws 31 can be rotated to roughly the same height first, and two levels are placed on the upper adjustment plate 20. According to the scales displayed on the two levels, one hollow screw 31 is not moved and used as the leveling reference, and the other two hollow screws 31 are rotated to adjust the height of the other two hollow screws 31; until the scales displayed on the level are all less than 2μm. Then use the hexagon socket to rotate and lock the fastening screw 32. During the locking process, the bottom of the hollow screw 31 conflicts with the convex ball pad 12, and the convex ball pad 12 will be offset relative to the concave ball pad 11, which will affect the flatness and change the flatness (the level display scale is no longer less than 2μm); therefore, while slowly locking the fastening screw 32, the hollow screw 31 can be slowly rotated to adjust the height of the hollow screw 31; until the fastening screw 32 is locked, the height of the hollow screw 31 is adjusted until the scales displayed on the level are all less than 2μm. Then, the nut 33 is rotated until the nut 33 is tightly against the upper adjustment plate 20, and the hollow screw 31 is locked and fixed to prevent the screw from being deformed under a long-term high-stress environment, so that the movable seat can effectively maintain the level.

[0042] The fixing seat includes a fixing support 40 , and a slide groove 41 is provided on the upper surface of the fixing support 40 ; a sliding block 15 is connected to the bottom surface of the lower adjustment plate 10 , and the sliding block 15 slides along the slide groove 41 .

[0043] In this embodiment, the material of the fixed support 40 is an aluminum profile, which can make the fixed support 40 light, and it has good rigidity and stability, and can provide a solid support for the probe replacement rack of the gantry three-dimensional coordinate measuring machine of the utility model. The fixed support 40 is oxidized to increase its hardness and wear resistance, has higher strength and rigidity, can withstand greater loads and pressures, and ensures stability and reliability during use. The oxidized silver-white aluminum profile selected for the fixed support 40 has a silver-white appearance, presenting a high-end and beautiful appearance, a smooth surface, no burrs, has certain anti-corrosion properties, and can maintain its beauty for a long time.

[0044] The slider 15 is an integral structure and can be integrally formed by a processing technique. Figure 7As shown, the cross-sectional shape of the slider 15 is a symmetrical figure, the slider 15 includes an arc-shaped slider 151, and a rectangular slider 152 is provided on the straight line segment where the arc-shaped slider 151 is located, and the length of the rectangular slider 152 is less than the length of the straight line segment where the arc-shaped slider 151 is located. Correspondingly, the slide groove 41 is an open groove, and the cross-sectional shape of the slide groove 41 is a symmetrical figure, and the slide groove 41 includes an arc-shaped groove, and a connected rectangular open groove is provided on the straight line where the arc-shaped groove is located. The slider 15 is inserted into the slide groove 41 from the end of the fixed support 40, the arc-shaped slider 151 can be slidably fitted in the arc-shaped groove, the rectangular slider 152 can be slidably fitted in the rectangular open groove, and the rectangular slider 152 extends out of the rectangular open groove; the extended side of the rectangular slider 152 is in contact with the bottom surface of the lower adjustment plate 10 and is connected by screws.

[0045] Through the cooperation of the slider 15 and the slide groove 41 of this embodiment, on the one hand, the slider 15 can slide smoothly, and on the other hand, the slider 15 can be prevented from being separated from the slide groove 41, so that when the slider 15 is connected to the lower adjustment plate 10, the lower adjustment plate 10 can be stably and reliably connected to the fixed support 40.

[0046] Through the cooperation of the slider 15 and the slide groove 41 of this embodiment, the installation position of the movable seat on the fixed support 40 can be conveniently and quickly adjusted, so that the position of the measuring needle can be conveniently and quickly adjusted, thereby improving the replacement speed and installation accuracy of the measuring needle.

[0047] A countersunk hole 16 is provided on the lower adjustment plate 10, and a connecting hole 17 corresponding to the countersunk hole 16 is provided on the slider 15. The connecting hole 17 is parallel to the radial direction where the arc-shaped slider part on the slider 15 is located; a screw is connected between the countersunk hole 16 and the connecting hole 17 to realize the connection between the slider 15 and the lower adjustment plate 10.

[0048] like Figure 3 As shown, the fixed support 40 is a hollow symmetrical structure. The fixed support 40 is approximately in the shape of a rectangular parallelepiped. The four surfaces of the fixed support 40 are provided with slide grooves 41. The number of slide grooves 41 on each surface is three. The three slide grooves 41 are parallel and evenly spaced along the length direction of the fixed support 40.

[0049] like Figure 5 As shown, the lower adjustment plate 10 is provided with a plurality of countersunk holes 16, and the plurality of countersunk holes 16 are arranged in two parallel rows.

[0050] Each column includes at least 4 countersunk holes 16; wherein three adjacent countersunk holes 16 are connected to sliders 15, and the spacing between two adjacent countersunk holes 16 in each column is equal to the spacing between two adjacent slide grooves 41 on the fixed support 40, and the three sliders 15 can be slidably fitted in the three slide grooves 41 respectively.

[0051] During installation, first insert two sliders 15 into the three slide grooves 41 respectively, and the six sliders 15 are arranged into two parallel rows. The spacing between the two rows of sliders 15 is equal to the spacing between the two rows of countersunk holes 16 on the lower adjustment plate 10. Then place the lower adjustment plate 10 on the fixed support 40, and move the lower adjustment plate 10 along the width direction of the fixed support 40 until the movable seat moves to the required Y-direction position. At this time, there are three adjacent countersunk holes 16 on each row corresponding to the three sliders 15. Then connect the screws on the countersunk holes 16 and the sliders 15. If the screws are not completely tightened, the sliders 15 can still slide along the slide grooves 41. Through the sliding of the sliders 15, the movable seat can slide along the length direction of the fixed support 40 until the movable seat moves to the required X-direction position. Then completely tighten the screws so that the sliders 15 are locked and fixed on the lower adjustment plate 10, so that the movable seat can be locked and fixed on the fixed support 40.

[0052] The end of the fixed support 40 is connected to a base plate 42, and the base plate 42 is connected to the column of the gantry three-dimensional coordinate measuring machine; the connection method can be bolt connection or other common connection methods in the field, and no specific limitation is made here.

[0053] The other end of the fixed support 40 is connected with an end cover 43, which can seal the other end of the fixed support 40, so that the fixed support 40 has a beautiful structure.

[0054] A replacement frame is connected to the upper adjustment plate 20, and the replacement frame includes a crossbeam 51. Two support columns 52 are vertically connected to the bottom of the crossbeam 51. The bottom of the support column 52 is connected to a base 53, and the base 53 is fixedly connected to the upper adjustment plate 20. The connection method can be a bolt connection or other commonly used connection methods in the field, and no specific limitation is made here.

[0055] A plurality of first measuring needle grooves 54 and a plurality of second measuring needle grooves 55 are connected to the crossbeam 51 . The first measuring needle grooves 54 and the second measuring needle grooves 55 are used for connecting measuring needles.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A stylus replacement rack for a gantry coordinate measuring machine, characterized in that: include The movable seat comprises an upper adjustment plate and a lower adjustment plate stacked up and down, a leveling assembly is arranged between the upper adjustment plate and the lower adjustment plate; the leveling assembly comprises a hollow screw, a fastening screw is inserted into the hollow screw, and the bottom of the fastening screw extends out of the hollow screw; A concave ball pad is fixed on the lower adjustment plate, and a convex ball pad is matched on the concave ball pad; The hollow screw is inserted from the upper adjustment plate and the bottom thereof abuts against the convex ball pad, and the fastening screw passes through the convex ball pad and the concave ball pad and is inserted into the lower adjustment plate; A replacement rack is installed on the upper adjustment plate, and the replacement rack is used to install the measuring needle.

2. The stylus replacement rack for a gantry coordinate measuring machine according to claim 1, characterized in that: The upper adjusting plate is provided with an upper threaded hole, and the lower adjusting plate is provided with a lower threaded hole corresponding to the upper threaded hole; The hollow screw is connected in the upper threaded hole, and the fastening screw is connected in the lower threaded hole.

3. The stylus replacement rack for a gantry coordinate measuring machine as claimed in claim 2, characterized in that: The diameter of the upper threaded hole is larger than the diameter of the lower threaded hole.

4. The stylus replacement rack for a gantry coordinate measuring machine as claimed in claim 2, characterized in that: The upper surface of the lower adjustment plate is provided with a groove, and the groove is connected with the lower threaded hole; The concave ball pad is fixed in the groove.

5. The stylus replacement rack for a gantry coordinate measuring machine according to claim 1, characterized in that: Two nuts are sleeved on the hollow screw, and the two nuts are respectively in tight contact with the upper surface and the lower surface of the upper adjustment plate.

6. The stylus replacement rack for a gantry coordinate measuring machine according to claim 1, characterized in that: There are multiple leveling components, and the multiple leveling components are symmetrically arranged on the moving base.

7. The stylus replacement rack for a gantry coordinate measuring machine according to claim 1, characterized in that: It also includes a fixing seat, the fixing seat includes a fixing support, and the upper surface of the fixing support is provided with a slide groove; The bottom surface of the lower adjustment plate is connected with a sliding block, and the sliding block can be slidably fitted in the sliding groove.

8. The stylus replacement rack for a gantry coordinate measuring machine according to claim 7, characterized in that: The lower adjustment plate is provided with a countersunk hole, and the slider is provided with a connecting hole corresponding to the countersunk hole; A screw is connected between the countersunk hole and the connecting hole to realize the connection between the sliding block and the lower adjusting plate.

9. The stylus replacement rack for a gantry coordinate measuring machine according to claim 7, characterized in that: The end of the fixed support is connected with a bottom plate, and the bottom plate is connected to the column of the gantry three-dimensional coordinate measuring machine.

10. The stylus replacement rack for a gantry coordinate measuring machine according to claim 1, characterized in that: The replacement frame comprises a crossbeam, a support column is installed at the bottom of the crossbeam, and the bottom of the support column is installed on the upper adjustment plate; The crossbeam is provided with a measuring needle groove for installing the measuring needle.

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