Belt wheel alignment device

Abstract

The utility model discloses a belt wheel alignment device, which can be matched with a Z shaft of a three-coordinate measuring machine to align a belt wheel, and comprises an alignment main body, arc-shaped clamping parts used for clamping a belt wheel are formed at the two ends of the alignment body, and the axes of the two arc-shaped clamping parts are parallel and located in the same vertical plane. The two sets of end stop assemblies are assembled at the two ends of the alignment main body respectively, each set of end stop assembly comprises two end stop parts which are arranged at the two ends of the arc-shaped clamping part respectively and used for limiting the end face of the belt wheel, and the two end stop parts arranged on the same side of the alignment main body are coplanar. According to the belt wheel alignment device for aligning and rectifying the deviation of the belt wheel, the belt wheel can be aligned under the condition that the belt wheel is not coplanar, belt abrasion is reduced, transmission stability and transmission precision are improved, and measurement precision is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical tooling, and in particular relates to a pulley alignment device structure. Background Art

[0002] Belt drives are divided into multi-V belts, synchronous belts, flat belts, etc. Among them, multi-V belts are also called composite V-belts. They are a new type of transmission belt. V-belt drive combines the advantages of V-belt drive and flat belt drive. It has a large transmission power, small vibration, and stable operation. Multi-V belts are mainly used in situations where the transmission power is large and the structure requires compactness.

[0003] In the manufacturing process of three-dimensional coordinate measuring machines, in order to ensure the smoothness and accuracy of movement in all directions, multi-V belts are usually used to drive the movement of each axis.

[0004] Due to the inevitable existence of part processing tolerances and the clearance between parts, the pulley may be uneven during the pulley assembly process. The uneven pulley surface includes two situations: the pulley shaft is not coplanar and the pulley plane is not coplanar. Both of these non-coplanar situations will accelerate belt wear and even cause the belt skeleton cord to be pulled out. Because the three-dimensional coordinate measuring machine is a high-precision device, the control system controls the machine to move in various directions according to the needs of each direction. If the pulley is not coplanar, the transmission power will be reduced, and stress will also exist during the transmission process, which will affect the accuracy of the three-dimensional coordinate measuring machine.

[0005] The existing pulley detection method is mainly obtained by manual visual observation or measurement with a steel ruler. When the pulley is uneven, it is manually adjusted and aligned, which is time-consuming and laborious.

[0006] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0007] The utility model aims at the above-mentioned technical problems existing in the pulley transmission in the prior art and proposes a pulley alignment tool for aligning and correcting the pulley, so as to improve the situation that the pulleys are not coplanar, reduce belt wear, increase transmission stability and transmission accuracy, and improve measurement accuracy.

[0008] In order to achieve the above utility model / design purpose, the utility model adopts the following technical solutions:

[0009] A pulley alignment device, which can cooperate with the Z axis of a three-coordinate measuring machine to align the pulley, includes:

[0010] Find the correct subject;

[0011] Arc-shaped engaging parts for engaging the pulley are formed at both ends of the alignment body, and the axes of the two arc-shaped engaging parts are parallel and located in the same vertical plane;

[0012] There are two groups of end stop assemblies, which are respectively assembled at the two ends of the alignment body. Each group of end stop assemblies includes: two end stop parts, which are respectively arranged at the two end positions of the arc-shaped clamping part, used to limit the end face of the pulley, and the two end stop parts arranged on the same side of the alignment body are coplanar.

[0013] In some embodiments of the present application, first reference surfaces are formed on both sides of the alignment body, and assembly slots are provided on the two first reference surfaces. The end stop component is clamped in the assembly slot and fixedly connected to the bottom wall of the assembly slot through a locking member.

[0014] In some embodiments of the present application, the end stop component is arranged parallel to the first reference plane, and the axis of the arc-shaped clamping portion is arranged perpendicular to the first reference plane.

[0015] In some embodiments of the present application, the top surface of the end stop component is higher than the first reference plane or flush with the first reference plane, and the bottom thereof is lower than the bottom of the alignment body.

[0016] In some embodiments of the present application, a clamping portion is formed on the alignment body;

[0017] The connecting component comprises a first connecting portion, wherein the first connecting portion is clamped in the clamping portion and is locked and fixed with the alignment body;

[0018] The second connecting portion is connected and fixed to the Z axis.

[0019] In some embodiments of the present application, the position of the connecting component relative to the Z axis is adjustable, and an adjustment hole is provided on the second connecting portion;

[0020] A locking hole is provided on the Z axis;

[0021] The locking component passes through the adjusting hole and is locked and fixed in the locking hole, wherein the outer diameter of the locking component is smaller than the inner diameter of the adjusting hole.

[0022] In some embodiments of the present application, the arc-shaped engaging portion includes: 2 symmetrically arranged sub-arc-shaped engaging portions;

[0023] A notch portion is formed between the two sub-arc-shaped engaging portions, and the notch portion is extended along the axial direction of the sub-arc-shaped engaging portions.

[0024] In some embodiments of the present application, the end stop component includes an end stop body;

[0025] and first end stop portions formed on both sides of the end stop body;

[0026] and a second end stop portion, wherein an end stop notch is formed between the second end stop portion and the first end stop portion, and the end stop notch is colinear with the notch portion.

[0027] In some embodiments of the present application, the first reference plane is arranged perpendicular to the horizontal plane and is a plane.

[0028] Compared with the prior art, the advantages and positive effects of the utility model are:

[0029] The pulley alignment device proposed by the utility model can align the pulley axis direction through the arc-shaped clamping parts and the end stop parts arranged at both ends thereof, and align its end surface through the end stop parts. The pulley alignment device cooperates with the Z axis to achieve the alignment of the driving pulley and the driven pulley, ensuring that the wheel shafts of the driving pulley and the driven pulley and the pulley surface are kept moving in the same plane to the greatest extent, reducing the friction caused by the belt tilt, increasing the service life of the belt, improving the stability and accuracy of the belt transmission, and making the measurement result of the three-dimensional coordinate measuring machine more accurate.

[0030] The deviation correction can be achieved by the cooperation of the Z-axis and the pulley correction device. The operation is simple and convenient, and the alignment accuracy is high.

[0031] 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

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 The pulley alignment device and the Z-axis matching structure proposed by the utility model Figure 1 ;

[0034] Figure 2 The pulley alignment device and the Z-axis matching structure proposed by the utility model Figure 2 ;

[0035] Figure 3 It is a structural schematic diagram of the engagement between the pulley alignment device and the pulley proposed by the utility model;

[0036] Figure 4 It is a structural exploded diagram of the pulley alignment device and the pulley proposed by the utility model;

[0037] Figure 5It is a structural schematic diagram of the alignment main body of the pulley alignment device proposed by the utility model.

[0038] In the figure, 100, alignment body; 110, first reference plane; 120, arc-shaped engaging portion; 121, sub-arc-shaped engaging portion; 122, notch portion; 130, assembly slot; 140, clamping portion; 200, end stop assembly; 210, end stop component; 211, first end stop portion; 212, second end stop portion; 213, end stop notch; 300, connecting component; 310, first connecting portion; 320, second connecting portion; 321, adjustment hole; 400, Z-axis; 500, driving pulley; 600, driven pulley. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present invention.

[0041] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In the description of the implementation method, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0043] In the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0044] The utility model provides an embodiment of a pulley alignment device, which can cooperate with a Z axis 400 of a three-dimensional coordinate measuring machine to align the pulley. The pulley alignment device can be detachably connected to the Z axis 400 of the three-dimensional coordinate measuring machine.

[0045] When aligning the pulley, the pulley alignment device can be connected to the Z-axis 400 according to the alignment requirements, and can be moved up and down driven by the Z-axis 400 to perform alignment.

[0046] When the pulley alignment device is not needed to be connected to the Z-axis 400, the pulley alignment device can also be removed and used separately.

[0047] The pulley alignment device is detachably connected to the Z axis 400 so as to cooperate with the three-dimensional coordinate measuring machine to realize the alignment operation of the pulley.

[0048] The pulley alignment device includes:

[0049] An alignment body 100, wherein the alignment body 100 has a first reference surface 110 arranged vertically;

[0050] In some embodiments of the present application, the alignment body 100 is a vertically arranged alignment body 100 beam, and the alignment body 100 beam is relatively long so that it can match the alignment between two pulleys that are far apart.

[0051] The beam of the alignment main body 100 is set as a beam structure to ensure that it has sufficient strength to ensure the overall strength of the tooling.

[0052] Arc-shaped engaging parts 120 for engaging the pulley are formed at both ends of the alignment body 100. The axes of the two arc-shaped engaging parts 120 are parallel and located in a vertical plane, and are used for correcting the axial deviation of the pulley. The axes of the arc-shaped engaging parts 120 are perpendicular to the first reference plane 110.

[0053] In order to ensure that the arc-shaped engaging portion 120 can be adapted and engaged with the pulley, its curvature should be set to be adapted to the curvature of the pulley to ensure that the pulley can be engaged and corrected through it.

[0054] The arc-shaped engaging portion 120 can be used to correct the axial deviation of the pulley in the transmission, and the arc-shaped engaging portion 120 can be used to correct the axial direction of the pulley engaged therein.

[0055] Arranging the arc-shaped engaging portion 120 for engaging two pulleys with axes parallel to each other and in a vertical plane can be used to ensure that the pulley axes of the two pulleys respectively engaged in the two arc-shaped engaging portions 120 can remain coplanar.

[0056] Since the end faces of the pulleys are arranged perpendicular to the axial direction of the pulleys, when the axes of the two pulleys are coplanar, the end faces of the two pulleys are parallel.

[0057] In order to ensure that the end faces of the two pulleys are coplanar, in some embodiments, there are also provided: an end stop assembly 200, which is provided with two groups and is respectively assembled at the two ends of the alignment body 100, and each group of end stop assemblies 200 includes: two end stop components 210, which are respectively arranged at the two ends of the arc-shaped clamping part 120 and are perpendicular to the axis of the arc-shaped clamping part 120, for limiting the end face of the pulley.

[0058] Furthermore, during the setting, the two end stop members 210 arranged at the two ends of the same first reference surface 110 are made to be coplanar.

[0059] Both of the two end stop members 210 are parallel to the first reference plane 110 .

[0060] By arranging two end stop components 210 at both ends of the alignment main body 100, they can respectively fit against the two end faces of the pulley to limit the end faces of the pulley, so that the two end faces of the pulley engaged in the arc-shaped engaging portion 120 are limited and corrected by the end stop components 210 at their two end positions, so that the end faces of the pulley are both parallel to the first reference plane 110.

[0061] By arranging the two end stop components 210 at both ends of the same reference plane of the alignment body 100 to be coplanar, it can be ensured that the end faces of the two pulleys at the two ends of the alignment body 100 are in a coplanar state.

[0062] For the convenience of description, in this embodiment, the pulley assembly including a driving pulley 500 and a driven pulley 600 is taken as an example for explanation of pulley alignment, wherein the driving pulley 500 is immovably fixed, and the driven pulley 600 is movable.

[0063] During alignment, first align the driving pulley 500 at the lower position through the pulley alignment device, move the pulley alignment device to make it close to the driving pulley 500, and move the pulley alignment device downward to the arc-shaped engaging portion 120 at the lower position to engage with the driving pulley 500, and adapt the position of the pulley alignment device to the driving pulley 500, and finally make the driving pulley 500 be in the arc-shaped engaging portion 120 and can rotate freely in the arc-shaped engaging portion 120. At this time, it means that the pulley alignment device and the driving pulley 500 are matched in place.

[0064] After the pulley alignment device is aligned with the driving pulley 500, the pulley alignment device is assembled and fixed to the Z-axis 400 of the three-dimensional coordinate measuring machine in this unchanged position. When the pulley alignment device is assembled on the Z-axis 400, its position in the X-direction and the Y-direction remains unchanged, and its position only in the direction of the Z-axis 400 changes.

[0065] When the pulley alignment device is assembled on the Z-axis 400, it is driven by the Z-axis 400 to move upward so as to move to the driven pulley 600 at the upper position. At this time, the position of the pulley alignment device does not move, and the driven pulley 600 is moved to align with the arc-shaped locking portion 120 above the alignment body 100. The driven pulley 600 can be inserted into the arc-shaped locking portion 120 from top to bottom. When the driven pulley 600 is in the arc-shaped locking portion 120 and can rotate freely in the arc-shaped locking portion 120, it means that the driven pulley 600 has been matched in place.

[0066] After the driven pulley 600 is aligned, the pulley alignment device is driven to move downward to a lower position through the movement of the Z axis 400, so that the pulley alignment device can be removed.

[0067] By cooperating with the pulley alignment device and the Z-axis 400, the alignment of the driving pulley 500 and the driven pulley 600 is achieved, ensuring that the axles of the driving pulley 500 and the driven pulley 600 and the pulley surfaces are kept moving in the same plane to the greatest extent, reducing the friction caused by the belt tilt, increasing the service life of the belt, improving the stability and accuracy of the belt transmission, and making the measurement results of the three-dimensional coordinate measuring machine more accurate.

[0068] In some embodiments of the present application, first reference surfaces 110 are formed on both sides of the alignment body 100, and assembly slots 130 are provided on the two first reference surfaces 110. The end stop component 210 is clamped in the assembly slot 130 and fixedly connected to the bottom wall of the assembly slot 130 through a locking member.

[0069] The assembly slot 130 is formed by being recessed from the first reference surface 110 of the alignment main body 100 and is arranged at an end position close to the alignment main body 100. The bottom surface of the end stop component 210 is arranged to fit the bottom surface of the assembly slot 130 and is clamped inside the assembly slot 130. It is locked and fixed on the bottom wall of the assembly slot 130 by a locking member.

[0070] The locking piece is a locking screw or a locking bolt.

[0071] In some embodiments of the present application, the top surface of the end stop component 210 is higher than the first reference surface 110 or flush with the first reference surface 110 , and the bottom thereof is lower than the bottom of the alignment body 100 .

[0072] In some embodiments, the end stop component 210 is an end stop plate, and when assembled inside the assembly slot 130 , its bottom surface can be higher than the first reference surface 110 or flush with the first reference surface 110 , as long as it can be ensured to be parallel to the first reference surface 110 .

[0073] The bottom of the end stop component 210 is lower than the alignment body 100 , which can ensure that the end stop component 210 can extend downward to perform end stop limiting on the end surface of the pulley matched with the arc-shaped clamping portion 120 .

[0074] In some embodiments of the present application, a clamping portion 140 is formed on the alignment body 100;

[0075] The connecting component 300 includes a first connecting portion 310, wherein the first connecting portion 310 is clamped in the clamping portion 140 and is locked and fixed with the alignment body 100;

[0076] The second connection portion 320 is connected and fixed to the Z-axis 400 .

[0077] The clamping portion 140 is a clamping groove formed by a depression on the alignment main body 100, and the first connecting portion 310 is a first connecting arm formed on the connecting component 300. The first connecting arm is clamped in the clamping groove and locked and fixed to the alignment main body 100 by a locking screw to achieve connection and fixation between the connecting component 300 and the alignment main body 100.

[0078] The second connecting portion 320 is a second connecting arm formed on the connecting component 300, and the second connecting arm is used to connect and fix with the Z-axis 400 to achieve the connection between the connecting component 300 and the Z-axis 400, and then connect and fix the pulley alignment device and the Z-axis 400 together through the connecting component 300.

[0079] In some embodiments of the present application, the position of the connecting component 300 relative to the Z-axis 400 is adjustable, and an adjustment hole 321 is provided on the second connecting portion 320;

[0080] A locking hole is provided on the Z axis 400;

[0081] The locking component passes through the adjustment hole 321 and is locked and fixed in the locking hole. The outer diameter of the locking component is smaller than the adjustment hole 321 .

[0082] The locking component is a locking screw, which passes through the adjustment hole 321 and is locked and fixed in the locking hole to press the connecting component onto the Z-axis 400 .

[0083] When the position of the pulley alignment device needs to be adjusted, the locking component can be loosened, and then the position can be changed relative to the locking component through the adjustment hole 321 on the connecting component 300. After the position is adjusted to the right position, the locking component can be tightened and fixed. The position adjustment direction of the connecting component 300 can be adjusted in the front-to-back direction or / and the left-to-right direction.

[0084] In some embodiments of the present application, the arc-shaped engaging portion 120 includes: 2 symmetrically arranged sub-arc-shaped engaging portions 121;

[0085] A notch portion 122 is formed between the two sub-arc-shaped engaging portions 121 , and the notch portion 122 is extended along the axial direction of the sub-arc-shaped engaging portions 121 .

[0086] The sub-arc-shaped engaging portion 121 is a sub-arc-shaped segment, and the two sub-arc-shaped segments are symmetrically arranged.

[0087] By configuring the arc-shaped engaging portion 120 to be composed of two sub-arc-shaped engaging portions 121 , the pulley can be easily engaged with the arc-shaped engaging portion 120 .

[0088] If the arc-shaped engaging portion 120 is configured as an integrated arc-shaped segment structure, the pulley needs to be completely engaged with the entire arc-shaped segment to be aligned, which makes engagement difficult and inconvenient.

[0089] By configuring the arc-shaped engaging portion 120 to be composed of two sub-arc-shaped engaging portions 121 , when engaging with the pulley, it is only necessary for both sides of the pulley to engage with the two sub-arc-shaped engaging portions 121 on both sides.

[0090] In some embodiments of the present application, the end stop component 210 includes an end stop body;

[0091] and first end stop portions 211 formed on both sides of the end stop body;

[0092] And a second end stop portion 212 , an end stop notch 213 is formed between the second end stop portion 212 and the first end stop portion 211 , and the end stop notch 213 is colinear with the notch portion 122 .

[0093] When the pulley is engaged with the arc-shaped engaging portion 120, its two ends will respectively contact and cooperate with the end stop components 210 assembled at the two end positions of the arc-shaped engaging portion 120. Before the pulley enters the arc-shaped engaging portion 120, it will first enter along the end stop component 210. When the position of the pulley is slightly offset due to assembly deviation or processing deviation, the pulley will exert force on the end stop component 210 when it enters the arc-shaped engaging portion 120. If the end stop component 210 is set as an integrated rigid end stop structure, it is not easy to deform, and the pulley is more difficult to be inserted and assembled. By setting the end stop component 210 to cooperate with the first end stop portion 211 and the second end stop portion 212, and forming an end stop notch 213 between the two, when it is subjected to the force of the pulley, it can adapt to some deformation, so that the pulley can be smoothly and conveniently inserted into the arc-shaped engaging portion 120, which is convenient for the engagement and alignment of the pulley.

[0094] In some embodiments of the present application, the first reference plane 110 is arranged perpendicular to the horizontal plane, and its corresponding surface is a plane.

[0095] 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 pulley alignment device, characterized in that: It can be used with the Z axis of the coordinate measuring machine to align the pulley, including: Find the correct subject; Arc-shaped engaging parts for engaging the pulley are formed at both ends of the alignment body, and the axes of the two arc-shaped engaging parts are parallel and located in the same vertical plane; There are two groups of end stop assemblies, which are respectively assembled at the two ends of the alignment body. Each group of end stop assemblies includes: two end stop parts, which are respectively arranged at the two end positions of the arc-shaped clamping part, used to limit the end face of the pulley, and the two end stop parts arranged on the same side of the alignment body are coplanar.

2. The pulley alignment device according to claim 1, characterized in that: First reference surfaces are formed on both sides of the alignment body, and assembly slots are provided on the two first reference surfaces. The end stop component is clamped in the assembly slot and fixedly connected to the bottom wall of the assembly slot through a locking member.

3. The pulley alignment device according to claim 2, characterized in that: The end stop component is arranged parallel to the first reference plane, and the axis of the arc-shaped clamping portion is arranged perpendicular to the first reference plane.

4. The pulley alignment device according to claim 3, characterized in that: The top surface of the end stop component is higher than the first reference surface or flush with the first reference surface, and the bottom of the end stop component is lower than the bottom of the alignment body.

5. The pulley alignment device according to claim 1, characterized in that: A clamping portion is formed on the alignment body; The connecting component comprises a first connecting portion, wherein the first connecting portion is clamped in the clamping portion and is locked and fixed with the alignment body; The second connecting portion is connected and fixed to the Z axis.

6. The pulley alignment device according to claim 5, characterized in that: The position of the connecting component relative to the Z axis is adjustable, and an adjustment hole is provided on the second connecting portion; A locking hole is provided on the Z axis; The locking component passes through the adjusting hole and is locked and fixed in the locking hole, wherein the outer diameter of the locking component is smaller than the inner diameter of the adjusting hole.

7. The pulley alignment device according to claim 1, characterized in that: The arc-shaped clamping portion comprises: two symmetrically arranged sub-arc-shaped clamping portions; A notch portion is formed between the two sub-arc-shaped engaging portions, and the notch portion is extended along the axial direction of the sub-arc-shaped engaging portions.

8. The pulley alignment device according to claim 7, characterized in that: The end stop component comprises an end stop body; and first end stop portions formed on both sides of the end stop body; and a second end stop portion, wherein an end stop notch is formed between the second end stop portion and the first end stop portion, and the end stop notch is colinear with the notch portion.

9. The pulley alignment device according to claim 1, characterized in that: The first reference plane is arranged perpendicular to the horizontal plane and is a plane.

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