CN111306190B - A friction steel belt transmission device and its measuring machine - Google Patents
A friction steel belt transmission device and its measuring machine Download PDFInfo
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- CN111306190B CN111306190B CN202010237408.6A CN202010237408A CN111306190B CN 111306190 B CN111306190 B CN 111306190B CN 202010237408 A CN202010237408 A CN 202010237408A CN 111306190 B CN111306190 B CN 111306190B
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- steel bar
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- wheel
- connecting block
- steel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/02—Sliding-contact bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/004—Fixing of a carriage or rail, e.g. rigid mounting to a support structure or a movable part
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/02—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes or chains
- F16H7/10—Means for varying tension of belts, ropes or chains by adjusting the axis of a pulley
- F16H7/14—Means for varying tension of belts, ropes or chains by adjusting the axis of a pulley of a driving or driven pulley
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
- G01B21/047—Accessories, e.g. for positioning, for tool-setting, for measuring probes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes or chains
- F16H2007/0889—Path of movement of the finally actuated member
- F16H2007/0891—Linear path
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
本发明公开了一种摩擦钢带传动装置及其测量机，所述摩擦钢带传动装置用于测量机进行坐标测量，其中：所述摩擦钢带传动装置包括设置在测量轴顶部的导轨、滑配在导轨上的驱动体、与所述驱动体连接的减速器以及设置在测量轴侧面并与所述减速器摩擦配合的钢带组件；所述钢带组件包括固定在测量轴两端的第一固定座、第二固定座和钢条，所述钢条的一端固定连接于第一固定座，所述钢条的另一端弹性连接于第二固定座，所述减速器与钢条摩擦配合。本发明实施例通过驱动减速器在钢条上摩擦移动，进而带动驱动体在导轨上滑动进行测量，钢带组件确保了减速器能够稳定的移动，进行精准测量，从而实现了高稳定性和高精准性的传动测量。
The present invention discloses a friction steel belt transmission device and a measuring machine thereof, wherein the friction steel belt transmission device is used for coordinate measurement by the measuring machine, wherein: the friction steel belt transmission device comprises a guide rail arranged on the top of the measuring shaft, a driving body slidably fitted on the guide rail, a reducer connected to the driving body, and a steel belt assembly arranged on the side of the measuring shaft and frictionally fitted with the reducer; the steel belt assembly comprises a first fixed seat, a second fixed seat and a steel bar fixed at both ends of the measuring shaft, one end of the steel bar is fixedly connected to the first fixed seat, the other end of the steel bar is elastically connected to the second fixed seat, and the reducer frictionally fits with the steel bar. The embodiment of the present invention drives the reducer to move frictionally on the steel bar, thereby driving the driving body to slide on the guide rail for measurement, and the steel belt assembly ensures that the reducer can move stably and perform precise measurement, thereby realizing transmission measurement with high stability and high precision.
Description
Technical Field
The invention relates to the field of coordinate measuring machines, in particular to a friction steel belt transmission device and a measuring machine thereof.
Background
Common transmission forms of the existing coordinate measuring machine are four types of synchronous belt transmission, screw transmission, friction rod transmission and gear rack transmission, and the four transmission forms have the defects:
The synchronous belt transmission has insufficient rigidity and is not suitable for medium and large strokes;
the screw transmission has high requirements on screw precision, relatively high cost, and has the problems of swing, unstable transmission and the like in the transmission process when a long-stroke screw is not used;
the friction rod transmission has high requirements on assembly and adjustment personnel, and is relatively difficult to adjust;
The gear and rack transmission has meshing gaps, the transmission is inaccurate, and the cost is high.
Disclosure of Invention
The invention aims to provide a friction steel belt transmission device and a measuring machine thereof, and aims to solve the problems of low stability, inaccurate transmission and the like in the transmission device of the existing coordinate measuring machine.
The embodiment of the invention provides a friction steel belt transmission device and a measuring machine thereof, wherein the friction steel belt transmission device comprises a guide rail arranged at the top of a measuring shaft, a driving body slidingly arranged on the guide rail, a speed reducer connected with the driving body and a steel belt assembly arranged on the side surface of the measuring shaft and in friction fit with the speed reducer, the steel belt assembly comprises a first fixing seat, a second fixing seat and a steel bar, the first fixing seat, the second fixing seat and the steel bar are fixed at two ends of the measuring shaft, one end of the steel bar is fixedly connected with the first fixing seat, the other end of the steel bar is elastically connected with the second fixing seat, and the speed reducer is in friction fit with the steel bar.
Further, the speed reducer comprises a box body connected to the driving body, a friction rubber wheel arranged on the box body, a motor for driving the friction rubber wheel to rotate and a compression rubber wheel opposite to the friction rubber wheel, and the steel bar is arranged between the friction rubber wheel and the compression rubber wheel.
Further, an upper bearing mounting plate and a lower bearing mounting plate are further mounted on the box body, the friction rubber wheel is mounted between the upper bearing mounting plate and the lower bearing mounting plate, a pressing wheel bearing seat capable of moving back and forth towards the direction of the friction rubber wheel is further mounted between the upper bearing mounting plate and the lower bearing mounting plate, the pressing rubber wheel is mounted on a pressing wheel bearing seat, a pressing cylinder is further mounted on the box body, and the pressing cylinder is connected with the pressing wheel bearing seat through a locking device.
Further, a driving wheel bearing seat is further arranged on the box body, a driving wheel installation shaft and a driving wheel arranged on the driving wheel installation shaft are vertically arranged in the driving wheel bearing seat, a driven wheel for interlocking the rotation of the friction rubber wheel is arranged on the upper bearing installation plate, a primary speed reduction flat belt is sleeved between a shaft wheel on a rotating shaft of the motor and the driving wheel, a secondary speed reduction flat belt is sleeved between the driving wheel installation shaft and the driven wheel, and the upper end of the center of the friction rubber wheel is arranged on the driven wheel.
Further, the box body is further provided with a first-stage tensioner for adjusting the tension of the first-stage flat deceleration belt, and the driving wheel bearing seat is further provided with a second-stage tensioner for adjusting the tension of the second-stage flat deceleration belt.
Further, a fixed adapter is arranged on the first fixing seat, an elastic adapter is arranged on the second fixing seat, one end of the steel bar is fixedly connected with the fixed adapter, and the other end of the steel bar is connected with the elastic adapter.
Further, the fixed adapter comprises a first penetrating rod penetrating through the first fixing seat, one end of the first penetrating rod is connected with one end of the steel bar through the first connecting block, the other end of the first penetrating rod is sequentially sleeved with a first plane thrust bearing, a first spherical washer, a first conical washer and a first locking nut, the elastic adapter comprises a second penetrating rod penetrating through the second fixing seat, one end of the second penetrating rod is connected with the other end of the steel bar through the second connecting block, and the other end of the second penetrating rod is sequentially sleeved with a second plane thrust bearing, a second spherical washer, a second conical washer, a spring and a second locking nut.
Further, the first penetrating rod penetrates into the first connecting block, the second penetrating rod penetrates into the second connecting block, and the first penetrating rod and the second penetrating rod are respectively in threaded connection with a first elastic nut and a second elastic nut which are used for adjusting tightness of the first connecting block and the second connecting block.
Further, the first fixing seat is further provided with a first steel-preventing bar large-angle rotating block extending to the side face of the first connecting block, the second fixing seat is further provided with a second steel-preventing bar large-angle rotating block extending to the side face of the second connecting block, the first steel-preventing bar large-angle rotating block and the first connecting block are in a gap, and the second steel-preventing bar large-angle rotating block and the second connecting block are in a gap.
The embodiment of the invention also provides a measuring machine, which comprises the friction steel belt transmission device.
The embodiment of the invention provides a friction steel belt transmission device and a measuring machine thereof, wherein the friction steel belt transmission device is used for measuring coordinates of the measuring machine, the friction steel belt transmission device comprises a guide rail arranged at the top of a measuring shaft, a driving body slidingly matched with the guide rail, a speed reducer connected with the driving body, and a steel belt component arranged on the side surface of the measuring shaft and in friction fit with the speed reducer, the steel belt component comprises a first fixing seat, a second fixing seat and a steel bar, the first fixing seat, the second fixing seat and the steel bar are fixed at two ends of the measuring shaft, one end of the steel bar is fixedly connected with the first fixing seat, the other end of the steel bar is elastically connected with the second fixing seat, and the speed reducer is in friction fit with the steel bar. According to the embodiment of the invention, the speed reducer is driven to move on the steel bar in a friction way, so that the driving body is driven to slide on the guide rail for measurement, the steel belt assembly ensures that the speed reducer can move stably for accurate measurement, and high-stability and high-accuracy transmission measurement is realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a friction steel belt drive provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a speed reducer according to an embodiment of the present invention;
FIG. 3 is a schematic view of another view angle structure of the speed reducer according to the embodiment of the present invention;
fig. 4 is a schematic view of another view angle structure of the speed reducer according to the embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of a speed reducer according to an embodiment of the present invention;
FIG. 6 is a schematic view of another view angle structure of a speed reducer according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a steel strip assembly according to an embodiment of the present invention;
FIG. 8 is a schematic view of another view of a steel strip assembly according to an embodiment of the present invention;
FIG. 9 is an enlarged schematic view of the portion A of FIG. 8;
fig. 10 is an enlarged schematic view of the portion B in fig. 8.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
Referring to fig. 1, an embodiment of the present invention provides a friction steel belt transmission device, which includes a guide rail 4 disposed at the top of a measuring shaft, a driving body 3 slidably disposed on the guide rail 4, a speed reducer 1 connected to the driving body 3, and a steel belt assembly 2 disposed on the side of the measuring shaft and frictionally engaged with the speed reducer 1, wherein the steel belt assembly 2 includes a first fixing seat 21, a second fixing seat 22 and a steel bar 23 fixed at two ends of the measuring shaft, one end of the steel bar 23 is fixedly connected to the first fixing seat 21, the other end of the steel bar 23 is elastically connected to the second fixing seat 22, and the speed reducer 1 is frictionally engaged with the steel bar 23.
In combination with fig. 2 and 3, the transmission process of the friction steel belt transmission device is as follows, wherein a motor 1111 (refer to fig. 2) on the speed reducer 1 provides driving force for the speed reducer 1 to move on the steel bar 23 in a friction way, the speed reducer 1 can move to synchronously drive the driving body 3 to move on the guide rail 4, in the process of moving the speed reducer 1, the steel bar 23 has high rigidity and high stability to ensure the stable movement of the speed reducer 1, one end of the steel bar 23 is elastically connected with the second fixing seat 22, the deformation problem possibly caused by uneven stress or excessive tensioning of the steel bar 23 is avoided, the transmission measurement accuracy is improved, and the transmission measurement with high stability and high accuracy is realized.
In one embodiment, the speed reducer 1 includes a housing 11 connected to the driving body 3, a friction rubber wheel 115 mounted on the housing 11, a motor 1111 for driving the friction rubber wheel 115 to rotate, and a pinch rubber wheel 117 opposite to the friction rubber wheel 115, wherein the steel bar 23 is interposed between the friction rubber wheel 115 and the pinch rubber wheel 117.
In this embodiment, the friction rubber wheel 115 abuts against one side surface of the steel bar 23, the pressing rubber wheel 117 presses against the other side surface of the steel bar 23, so as to clamp the steel bar 23, and when the motor 1111 is started, the friction rubber wheel 115 can be driven to rotate on the steel bar 23, so as to drive the speed reducer 1 to move on the steel bar 23.
Further, it should be noted that the excessive clamping force between the pinch roller 117 and the friction roller 115 may cause excessive working load of the motor 1111 and be easily damaged, and the insufficient clamping force may cause the friction roller 115 to slip, which affects the accuracy of the movement of the speed reducer 1, so that the clamping force between the pinch roller 117 and the friction roller needs to be tested and analyzed in advance to obtain an optimal clamping force, so that the accuracy of the movement of the speed reducer 1 can be ensured and the service life of the motor 1111 can be prolonged.
Referring to fig. 4 and 5, in an embodiment, the case 11 is further provided with an upper bearing mounting plate 113 and a lower bearing mounting plate 114, the friction rubber wheel 115 is mounted between the upper bearing mounting plate 113 and the lower bearing mounting plate 114, a pinch roller bearing seat 116 capable of moving back and forth along a direction towards the friction rubber wheel 115 is further mounted between the upper bearing mounting plate 113 and the lower bearing mounting plate 114, the pinch roller 117 is mounted on the pinch roller bearing seat 116, and the case 11 is further provided with a pinch cylinder 112, and the pinch cylinder 112 is connected with the pinch roller bearing seat 116 through a locking device 118.
In this embodiment, the pressure provided by the pressing cylinder 112 may be provided by the locking device 118, the pressure provided by the pressing cylinder 112 may be changed, so that the clamping force between the pressing rubber wheel 117 and the friction rubber wheel 115 is adjusted by the locking device 118, the pressing rubber wheel 117 is mounted on the pressing rubber wheel bearing seat 116, and when the pressure provided by the pressing cylinder 112 is changed, the pressing rubber wheel 117 may move back and forth synchronously along with the pressing rubber wheel bearing seat 116 in the direction towards the friction rubber wheel 115, so that the distance between the pressing rubber wheel 117 and the friction rubber wheel 115 is changed, that is, the clamping force between the pressing rubber wheel 117 and the friction rubber wheel 115 is changed.
Specifically, during the long-term transmission, when the friction rubber wheel 115 is clamped or slipped on the steel bar 23, there may be a problem in the clamping force between the pressing rubber wheel 117 and the friction rubber wheel 115, and at this time, the clamping force between the pressing rubber wheel 117 and the friction rubber wheel 115 may be adjusted by adjusting the pressure value of the pressing cylinder 112, that is, when the pressure of the pressing cylinder 112 is increased, the clamping force between the pressing rubber wheel 117 and the friction rubber wheel 115 is increased, and when the pressure of the pressing cylinder 112 is reduced, the clamping force between the pressing rubber wheel 117 and the friction rubber wheel 115 is reduced.
Further, the friction rubber wheel 115 and the compacting rubber wheel 117 are polyurethane rubber wheels, and the main purpose of the polyurethane rubber wheels is to ensure a certain elasticity in the transmission process, and also to protect the steel bar 23 from being scratched.
Referring to fig. 6, in an embodiment, the box 11 is further provided with a driving wheel bearing seat 12, a driving wheel mounting shaft 124 and a driving wheel 125 mounted on the driving wheel mounting shaft 124 are vertically disposed in the driving wheel bearing seat 12, the upper bearing mounting plate 113 is provided with a driven wheel 1131 that is linked with the rotation of the friction rubber wheel 115, a first-stage flat deceleration belt 13 is sleeved between the driving wheel 125 and a shaft wheel 11111 on the rotation shaft of the motor 1111, a second-stage flat deceleration belt 14 is sleeved between the driving wheel mounting shaft 124 and the driven wheel 1131, and the upper end of the center of the friction rubber wheel 115 is mounted on the driven wheel 1131.
In this embodiment, a specific structure for driving the friction wheel 115 to rotate is defined. The working principle of the friction rubber wheel is that a motor 1111 is started to drive the shaft wheel 11111 to rotate, the shaft wheel 11111 drives the driving wheel 125 to rotate through the primary reduction flat belt 13, the driving wheel 125 and the driving wheel mounting shaft 124 synchronously rotate, the driving wheel mounting shaft 124 drives the driven wheel 1131 to rotate through the secondary reduction flat belt 14, and the driven wheel 1131 can drive the friction rubber wheel 115 to synchronously rotate.
The primary reduction flat belt 13 and the secondary reduction flat belt 14 are adopted as two-stage reduction, so that a high-stability transmission effect is better achieved, the shaft wheel 11111, the driving wheel 125 and the driven wheel 1131 are all drum wheels, and the purpose of adopting the drum wheels is to better ensure that the primary reduction flat belt 13 and the secondary reduction flat belt 14 can be automatically aligned to be in a centering state in the movement process, so that the transmission stability is further ensured.
In an embodiment, the box 11 is further provided with a primary tensioner for adjusting the tension of the primary flat deceleration belt 13, and the driving wheel bearing seat 12 is further provided with a secondary tensioner for adjusting the tension of the secondary flat deceleration belt 14.
In this embodiment, the motor 1111 is mounted on the box 11 through a motor mounting plate 111, the position of the motor mounting plate 111 can be moved and adjusted on the box 11, and the primary tensioner is used for pre-adjusting the position of the motor mounting plate 111, so that the primary flat belt 13 between the rotating shaft and the driving wheel 125 is adjusted to a proper tension, and the tension of the primary flat belt 13 can be maintained by fixing the motor mounting plate 111 through bolts. Specifically, the primary tensioner includes at least one primary tensioning bolt 15, and two primary tensioning bolts 15 may be disposed side by side in this embodiment. In this way, in the process of pre-adjusting the position of the motor mounting plate 111, the motor mounting plate 111 can be driven to drive the motor 1111 to move by rotating the first-stage tensioning bolt 15, the distance between the shaft wheel 11111 and the driving wheel 125 changes when the motor 1111 moves, the tension of the first-stage flat belt 13 is further adjusted, the parallelism of the shaft wheel 11111 and the driving wheel 125 can be adjusted, and the fact that the first-stage flat belt 13 can be centered and not stiff is ensured when in operation.
The driving wheel bearing seat 12 comprises an adjusting plate 121 arranged on the box body 11, an upper driving wheel bearing plate 122 and a lower driving wheel bearing plate 123 arranged on the adjusting plate 121, the driving wheel 125 is arranged between the upper driving wheel bearing plate 122 and the lower driving wheel bearing plate 123, one side of the adjusting plate 121 extends to the side edge of the box body 11 and then continues to be folded to extend to form a folding block 1211, the position of the adjusting plate 121 can be movably adjusted on the box body 11, and the secondary tensioner is arranged on the folding block 1211 and is used for pre-adjusting the position of the adjusting plate 121, so that the tension of the secondary reduction flat belt 14 between the driving wheel 125 and the driven wheel 1131 is adjusted to be proper, and the tension of the secondary reduction flat belt 14 can be kept by fixing the adjusting plate 121 through bolts.
Specifically, the secondary tensioner includes at least one secondary tensioning bolt 16, and this embodiment may provide two secondary tensioning bolts 16 side by side. The secondary tensioning bolt 16 passes through the folding block 1211 and is connected to the box 11 in a threaded manner, the secondary tensioning bolt 16 is rotatably connected with the folding block 1211, so that in the process of pre-adjusting the position of the adjusting plate 121, the adjusting plate 121 (i.e. the driving wheel bearing seat 12) can be driven to drive the driving wheel 125 to move by rotating the secondary tensioning bolt 16, the distance between the driving wheel 125 and the driven wheel 1131 is changed when the driving wheel 125 moves, the tension degree of the secondary flat belt 14 is adjusted, the parallelism of the driving wheel 125 and the driven wheel 1131 can be adjusted, and the centering of the secondary flat belt 14 can be ensured to be different when the secondary flat belt is operated.
Referring to fig. 7 and 8, in an embodiment, the first fixing base 21 is provided with a fixing adaptor 211, the second fixing base 22 is provided with an elastic adaptor 221, one end of the steel bar 23 is fixedly connected to the fixing adaptor 211, and the other end is connected to the elastic adaptor 221.
In this embodiment, by the fixing adaptor 211 and the elastic adaptor 221, the stability of the steel bar 23 is ensured and the tensile deformation performance of the steel bar 23 is improved under the condition of uneven tensioning or stress or asymmetric installation of the steel bar 23.
Referring to fig. 9 and 10, in an embodiment, the fixing adaptor 211 includes a first penetrating rod 2111 penetrating through the first fixing seat 21, one end of the first penetrating rod 2111 is connected to one end of the steel bar 23 through a first connecting block 24, the other end of the first penetrating rod 2111 is sequentially sleeved with a first plane thrust bearing 2112, a first spherical washer 2113, a first conical washer 2114 and a first locking nut 2115, the elastic adaptor 221 includes a second penetrating rod 2211 penetrating through the second fixing seat 22, one end of the second penetrating rod 2211 is connected to the other end of the steel bar 23 through a second connecting block 25, and the other end of the second penetrating rod 2211 is sequentially sleeved with a second plane thrust bearing 2212, a second spherical washer 2213, a second conical washer 2214, a spring 2215 and a second locking nut 2216.
In this embodiment, the first connecting block 24 and the second connecting block 25 may be fixed to two ends of the steel bar 23 by bolts, in the process of assembling and disassembling the steel bar 23, the steel bar 23 that is bolted to the first connecting block 24 and the second connecting block 25 is interposed between the first fixing seat 21 and the second fixing seat 22, and then the first penetrating rod 2111 penetrates through the first fixing seat 21 and is connected to the first connecting block 24, the second penetrating rod 2211 penetrates through the second fixing seat 22 and is connected to the second connecting block 25, so that the installation can be completed, and the steel bar 23 can be used by finally performing corresponding adjustment according to measurement requirements.
The first locking nut 2115 may lock the first planar thrust bearing 2112, the first spherical washer 2113 and the first conical washer 2114 to the first fixing seat 21, the second locking nut 2216 may lock the second planar thrust bearing 2212, the second spherical washer 2213, the second conical washer 2214 and the spring 2215 to the second fixing seat 22, and by adjusting the tightness of the first locking nut 2115 and the second locking nut 2216, the first penetrating rod 2111 and the second penetrating rod 2211 may rotate, that is, the steel bar 23 may also be in a rotatable state through the first connecting block 24 and the second connecting block 25, so that errors in various aspects may be eliminated in the measurement process, and measurement accuracy may be improved.
Specifically, the first plane thrust bearing 2112 and the second plane thrust bearing 2212 make the stress on two ends of the steel bar 23 more uniform, the first spherical washer 2113 and the second spherical washer 2213 can release the rotation freedom degree of the steel bar 23, eliminate the rotation of the steel bar 23 caused by the error of the speed reducer 1 and the guide rail 4 in the transmission process, and also eliminate the distortion of the steel bar 23 caused by the asymmetric installation of two ends of the steel bar 23 in tensioning, the first conical washer 2114 and the second conical washer 2214 ensure that the error caused by the asymmetric stress points of two ends caused by processing and installation is eliminated when the steel bar 23 is tensioned, and the spring 2215 can be a butterfly spring, which prevents the temperature change from changing the tension of the steel bar 23, and simultaneously ensures that the tension force of the steel bar 23 is not too large and the tension force is possibly pulled to the plastic deformation.
The steel bar 23 is made of martensitic stainless steel bar 23, has high hardness and small tensile deformation, thereby realizing high rigidity and high stability of friction steel belt transmission.
In an embodiment, the first penetrating rod 2111 penetrates into the first connecting block 24, the second penetrating rod 2211 penetrates into the second connecting block 25, and the first penetrating rod 2111 and the second penetrating rod 2211 are respectively in threaded connection with a first elastic nut 2116 and a second elastic nut 2217 for adjusting tightness of the first connecting block 24 and the second connecting block 25.
In this embodiment, during the measurement process, the first penetrating rod 2111 and the first connecting block 24 are locked and fixed by the first elastic nut 2116 and the second elastic nut 2217, the second penetrating rod 2211 and the second connecting block 25 are locked and fixed, so as to maintain the stability of the measurement, and when the steel bar 23 needs to be adjusted, the first elastic nut 2116 and the second elastic nut 2217 are loosened, so that the first penetrating rod 2111 and the second penetrating rod 2211 are respectively loosened from the first connecting block 24 and the second connecting block 25, and the steel bar 23 can be adjusted.
In an embodiment, the first fixing seat 21 is further provided with a first steel-preventing-bar large-angle rotating block 212 extending to the side surface of the first connecting block 24, the second fixing seat 22 is further provided with a second steel-preventing-bar large-angle rotating block 222 extending to the side surface of the second connecting block 25, a gap exists between the first steel-preventing-bar large-angle rotating block 212 and the first connecting block 24, and a gap exists between the second steel-preventing-bar large-angle rotating block 222 and the second connecting block 25.
In this embodiment, the steel bar 23 is in a rotatable state, so that the problems of installation errors of the speed reducer 1 and the driving body 3, uneven installation stress of the steel bar 23, tensioning deformation of the steel bar 23, measurement errors and the like are solved, but when the steel bar 23 excessively rotates, larger errors can occur in friction fit with the speed reducer 1, so that the rotation of the first connecting block 24 and the second connecting block 25 is limited by arranging the first steel bar-preventing large-angle rotating block 212 and the second steel bar-preventing large-angle rotating block 222, the excessive rotation of the steel bar 23 is further limited, and the stability of the transmission process is ensured.
The first connecting block 24 and the second connecting block 25 may be both configured in an L shape, so that the first connecting block 24 may be referred to as a first L-shaped connecting block, the second connecting block 25 may be referred to as a second L-shaped connecting block, one end of the steel bar 23 is fixed to a step of the first L-shaped connecting block by a first fixing block 231, the fixing manner may be that a screw or a bolt passes through the first fixing block 231 to be fixed to the step of the first L-shaped connecting block, the other end of the steel bar 23 is fixed to a step of the second L-shaped connecting block by a second fixing block 232, and the fixing manner may be that a screw or a bolt passes through the second fixing block 232 to be fixed to the step of the second L-shaped connecting block.
The embodiment of the invention also provides a measuring machine, which comprises the friction steel belt transmission device.
In the description, each embodiment is described in a progressive manner, and each embodiment is mainly described by the differences from other embodiments, so that the same similar parts among the embodiments are mutually referred. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
It should also be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprise," "include," or any other variation thereof, are intended to cover a non-exclusive inclusion.
Such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
Claims (6)
1. The friction steel belt transmission device is applied to a measuring machine and is characterized by comprising a guide rail arranged at the top of a measuring shaft, a driving body slidingly arranged on the guide rail, a speed reducer connected with the driving body and a steel belt assembly arranged on the side surface of the measuring shaft and in friction fit with the speed reducer, wherein the steel belt assembly comprises a first fixing seat, a second fixing seat and a steel bar which are fixed at two ends of the measuring shaft, one end of the steel bar is fixedly connected with the first fixing seat, the other end of the steel bar is elastically connected with the second fixing seat, and the speed reducer is in friction fit with the steel bar;
The first fixing seat is provided with a fixed adapter, the second fixing seat is provided with an elastic adapter, one end of the steel bar is fixedly connected with the fixed adapter, and the other end of the steel bar is connected with the elastic adapter;
The elastic adapter comprises a second penetrating rod penetrating through the second fixing seat, one end of the second penetrating rod is connected with the other end of the steel bar through a second connecting block, and the other end of the second penetrating rod is sequentially sleeved with a second plane thrust bearing, a second spherical washer, a second conical washer, a spring and a second locking nut;
The first penetrating rod penetrates into the first connecting block, the second penetrating rod penetrates into the second connecting block, and the first penetrating rod and the second penetrating rod are respectively connected with a first elastic nut and a second elastic nut which are used for adjusting the tightness of the first connecting block and the second connecting block in a threaded manner;
the steel bars are in a rotatable state, a first steel bar-preventing large-angle rotating block extending to the side face of the first connecting block is further arranged on the first fixing seat, a second steel bar-preventing large-angle rotating block extending to the side face of the second connecting block is further arranged on the second fixing seat, gaps exist between the first steel bar-preventing large-angle rotating block and the first connecting block, gaps exist between the second steel bar-preventing large-angle rotating block and the second connecting block, and the first connecting block and the second connecting block are all L-shaped.
2. The friction steel belt transmission device as set forth in claim 1 wherein the speed reducer comprises a box connected to a driving body, a friction rubber wheel mounted on the box, a motor for driving the friction rubber wheel to rotate, and a compacting rubber wheel opposite to the friction rubber wheel, wherein the steel bar is interposed between the friction rubber wheel and the compacting rubber wheel.
3. The friction steel belt transmission device as set forth in claim 2, wherein the housing is further provided with an upper bearing mounting plate and a lower bearing mounting plate, the friction rubber wheel is mounted between the upper bearing mounting plate and the lower bearing mounting plate, a pinch roller bearing seat capable of moving back and forth in a direction toward the friction rubber wheel is further mounted between the upper bearing mounting plate and the lower bearing mounting plate, the pinch rubber wheel is mounted on the pinch roller bearing seat, the housing is further provided with a pinch cylinder, and the pinch cylinder is connected with the pinch roller bearing seat through a locking device.
4. The friction steel belt transmission device according to claim 3, wherein a driving wheel bearing seat is further arranged on the box body, a driving wheel installation shaft and a driving wheel arranged on the driving wheel installation shaft are vertically arranged in the driving wheel bearing seat, a driven wheel for interlocking the rotation of the friction rubber wheel is arranged on the upper bearing installation plate, a primary speed reduction flat belt is sleeved between a shaft wheel on a rotating shaft of the motor and the driving wheel, a secondary speed reduction flat belt is sleeved between the driving wheel installation shaft and the driven wheel, and the upper end of the center of the friction rubber wheel is arranged on the driven wheel.
5. The friction steel belt transmission as set forth in claim 4 wherein said housing further comprises a primary tensioner for adjusting a primary flat-speed belt tension, and said drive wheel bearing housing further comprises a secondary tensioner for adjusting a secondary flat-speed belt tension.
6. A measuring machine, characterized by comprising the friction steel belt transmission device according to any one of claims 1 to 5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010237408.6A CN111306190B (en) | 2020-03-30 | 2020-03-30 | A friction steel belt transmission device and its measuring machine |
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| CN202010237408.6A CN111306190B (en) | 2020-03-30 | 2020-03-30 | A friction steel belt transmission device and its measuring machine |
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| CN111306190A CN111306190A (en) | 2020-06-19 |
| CN111306190B true CN111306190B (en) | 2025-06-24 |
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| CN113654499A (en) * | 2021-09-15 | 2021-11-16 | 深圳力合精密装备科技有限公司 | Friction steel belt transmission device and measuring machine thereof |
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