CN114812936A - Detection device for rapidly and quantitatively evaluating static balance of straight-barrel type revolving body and balancing method thereof - Google Patents

Abstract

The invention discloses a device for rapidly and quantitatively evaluating the static balance of a straight cylinder type revolving body and a balancing method thereof, wherein the device comprises a root detection unit, a tip detection unit and a microcomputer processing unit, wherein the root detection unit and the tip detection unit respectively comprise a platform and a rolling shaft; the rolling shaft between the two platforms is used for horizontally placing a product to be detected, a target tape is pasted on the circumference of the product to be detected, the target tape is composed of customized reflecting mark target points which are uniformly distributed at intervals and accurately positioned, the target points are provided with numbers and used for positioning and detecting the arc length distance, product weight detection can be realized according to a weight detector, a linear speed detector realizes overall uneven positioning analysis of the circumferential quality of the product, the arc length detector detects the arc distance, a microcomputer processing unit can intelligently provide a static balance balancing scheme of the product, and the device is rapid and accurate.

Description

Detection device for rapidly and quantitatively evaluating static balance of straight-barrel type revolving body and balancing method thereof

Technical Field

The invention belongs to the technical field of high-precision detection of circumferential mass distribution static balance of a straight-barrel type revolving body product, and particularly relates to a detection device for rapidly and quantitatively evaluating the static balance of a straight-barrel type revolving body and a balancing method thereof.

Background

Most static balance detection device at present mainly are to small-size spare parts such as lathe emery wheel, bent axle connecting rod, and equipment function is single simultaneously, only can simply detect the static balance of verifying small-size spare part, and need realize static balance control through trying the counter weight many times, and it is consuming time big and the precision is not high, can't satisfy the quick static balance grade differentiation of batch product and intelligent the scheme of giving the balancing.

Disclosure of Invention

In order to solve the problems, the invention provides a device for rapidly and quantitatively evaluating the static balance of a straight cylinder type revolving body and a balancing method thereof.

The invention is realized by the following technical scheme:

the device comprises a microcomputer processing unit, a root detection unit and a tip detection unit which are arranged in parallel, wherein the microcomputer processing unit comprises a microcomputer processor with a display;

the root detection unit and the tip detection unit respectively comprise a platform and rolling shafts, the platform is placed on a group of bottom guide rails which are arranged in parallel relatively, the rolling shafts are respectively positioned above two sides of the platform and are arranged in parallel with the bottom guide rails, the bottoms of two sides of each rolling shaft are respectively supported by supporting columns, weight detectors positioned between the two rolling shafts are respectively arranged on the two platforms, and a linear velocity detector 10 and an arc length detector are also arranged between the two rolling shafts on the platform of the root detection unit;

be used for the decurrent product that awaits measuring of placing on the roller bearing between two platforms, the product that awaits measuring is the straight tube type solid of revolution, pastes on the circumference of the product that awaits measuring and has repeatedly usable's target area, the target area comprises the even and accurate reflective marker target point of location of customized interval distribution, the target point has the serial number for the location detects the arc length distance.

Furthermore, the bottom guide rail is of an I-shaped structure with a rectangular cross section, the molded surface of the bottom guide rail is machined into the I-shaped structure, the bottom guide rail is used for being matched with the platform on the upper portion in a precise matching mode, the matching gap between the bottom guide rail and the platform is within 0.1mm, the length of the bottom guide rail is 1-2m, the bottom guide rail is made of hard wear-resistant metal materials, an antirust agent is coated on the surface of the bottom guide rail, the flatness requirement of the bottom guide rail is less than or equal to 0.1mm, and the straightness is less than or equal to 0.1 mm.

Furthermore, two bottom guide rail both sides of every group are equipped with the position detector respectively, install 4 altogether, through adopting laser reflection range finding principle, realize root, the space of point detecting element bottom guide rail adjust well to possess the plane and detect the calibration function.

Furthermore, the platform is made of hard wear-resistant metal, vertical grooves matched with the bottom guide rails are formed in two sides of the lower surface of the platform, and the straightness of the vertical grooves is less than or equal to 0.1 mm.

Furthermore, two transverse grooves which are arranged in parallel are arranged on the platform along the length direction, the bottoms of the supporting columns are connected with the transverse grooves in a sliding mode, the distance between the corresponding rolling shafts is adjusted, and fixed rolling shaft accessories are arranged on two sides of each supporting column and comprise positioning pins and fixing bolts;

all be provided with two distancers on the support column of every roller bearing, the distancer is laser or infrared distancer, detects through 4 dot position distances, adjusts distance and the adjustment depth of parallelism between the corresponding roller bearing.

Furthermore, the roller bearing is a hollow structure with a cylindrical section, the diameter of the roller bearing is 200mm, two ends of the roller bearing are fixed through a bearing with ultra-low friction torque, and the bearing is a deep groove ball bearing, an angular contact ball bearing, a self-aligning ball bearing or a cylindrical roller bearing.

Furthermore, the linear velocity detector is a high-precision low-speed detector, a non-contact electronic and digital high-precision frequency velocimeter is adopted, the linear velocity of the product is detected through high frequency, and the instantaneous linear velocity is recorded by a time axis.

Furthermore, the arc length detector adopts a high-frequency exposure detector, the numbers of target points which are adhered to the outer surface of the product in advance are detected and identified, the target points are special mark points which are uniformly and closely distributed, the distance between the target points is standard, and the arc distance between the two target points can be automatically calculated by a microcomputer processor by identifying the target points with different numbers, so that the instantaneous arc length distance is collected and recorded by a time axis and is input into the microcomputer processor for processing.

Furthermore, the weight detector is an electronic pressure sensor and is used for collecting the weight of the product and inputting signals into a microcomputer processor for conversion and recording.

The balancing method realized by the static balance detection device mainly comprises the following steps:

step one, assembling a static balance detection device, and adjusting equipment according to the length of a product to be detected;

step two, after the equipment is debugged, the product to be tested is horizontally placed on the two groups of rolling shafts;

step three, after the equipment is stabilized, starting the static balance detection device, and recording and outputting the weight information m of the product to be detected through the weight detector ₀ At the moment, the arc length detector records the target point number a in the opposite direction, the product to be detected is freely released, the product to be detected freely rotates around the geometric rotation center line of the product to be detected, the equivalent mass center of the rotation body can be known to deviate from the center line of the rotation body through mechanical analysis, the distance is recorded as h1, under the action of gravity, the rotation speed of the outer cylinder is continuously accelerated in the rotation process around the center line until the equivalent mass center is in the vertical downward position, and at the moment, the linear velocity detector detects the fastest rotation linear velocity v ₀ And storing corresponding time record, synchronously recording the number b of the target point opposite to the arc length detector, and automatically recording the arc distance between the numbers a and b by the microcomputer processorCalculating the arc length s dynamically until the static balance detection of the product to be detected is finished;

step four, opening the analysis software of the microcomputer processor and inputting the standard radius size r of the product ₀ The weight m of the product requiring additional balance weight is given through calculation and automatic analysis ₁ And a specific position x needing counterweight is given, the position x is a reverse corresponding position of the target point b, and the mass of the extra counterweight is as follows:

wherein

The invention has the beneficial effects that:

(1) the position of the roller on the platform is adjustable, the device is suitable for the change of a large straight cylinder type revolving body in length and diameter, can be suitable for the static balance detection of products with various dimensions, and has general adaptability;

(2) the invention can rapidly carry out the static balance detection of the product;

(3) the invention can accurately and intelligently provide a static balance balancing scheme.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural diagram of a root detection unit according to the present invention;

FIG. 3 is a schematic illustration of the static balance detection calculation of the present invention;

reference numerals: 1. a root detection unit; 2. a tip detection unit; 3. a product to be tested; 4. a bottom rail; 5. an orientation detector; 6. a platform; 7. a roller; 8. fixing the roller fitting; 9. a range finder; 10. a linear velocity detection instrument; 11. an arc length detector; 12. a weight detector; 13. a microprocessor; 14. a target tape.

Detailed Description

The technical solution in the embodiments of the present invention is clearly and completely described below with reference to the accompanying drawings.

Example 1

As shown in the figure, the device for rapidly and quantitatively evaluating the static balance of the straight cylinder type revolving body comprises a root detection unit 1, a tip detection unit 2 and a microcomputer processing unit which are arranged in parallel relatively, wherein the microcomputer processing unit comprises a microcomputer processor 13 with a display;

the root detection unit 1 and the tip detection unit 2 both comprise platforms 6 and rollers 7, the two platforms 6 respectively cross over and are placed on a group of bottom guide rails 4 which are arranged in parallel relatively, the rollers 7 are respectively positioned above two sides of the platforms 6 and are arranged in parallel with the bottom guide rails 4, the bottom parts of two sides of the rollers 7 are respectively supported by supporting columns, weight detectors 12 which are positioned between the two rollers 7 are respectively arranged on the two platforms 6, a linear velocity detection instrument 10 and an arc length detector 11 are also sequentially arranged between the two rollers 7 on the platform of the root detection unit 1, and the linear velocity detection instrument 10 is positioned between the weight detectors 12 and the arc length detector 11;

namely, the root detection unit 1 includes: 1 pair of parallel bottom guide rails 4, 1 metal platform 6, 1 pair of parallel rollers 7, 1 set of linear speed detection unit, 1 set of arc distance detection unit and 1 set of weight detection unit; the tip detection unit 2 includes only 1 pair of bottom rails 4, a thick metal platform 6, 1 pair of rollers, and a product weight detection unit.

Be used for the decubitus on the roller bearing 7 between two platforms to place the product 3 that awaits measuring, the product 3 that awaits measuring is the straight tube type solid of revolution, and it has repeatedly usable's target area 14 to paste on the circumference of the product 3 that awaits measuring, target area 14 comprises the even and accurate reflective marker target point of location of interval distribution of customization, the target point has the serial number for the location detects the arc length distance.

Further, the bottom guide rail 4 is an I-shaped structure with a rectangular cross section processed by a molded surface and is used for being matched with the platform 6 on the upper portion in a precise mode, the matching gap between the bottom guide rail 4 and the platform 6 is within 0.1mm, the length of the bottom guide rail 4 is 1-2m, the bottom guide rail is made of hard wear-resistant metal materials, antirust agents are coated on the surface of the bottom guide rail, the hard wear-resistant metal materials are made of 45#, 40Cr and other alloy steels, the flatness requirement of the bottom guide rail 4 is less than or equal to 0.1mm, and the straightness is less than or equal to 0.1 mm.

Furthermore, 4 sides at two bottom guide rails of every group are equipped with position detector 5 respectively, install 4 altogether, through adopting laser reflection range finding principle, realize root, the space of sharp detection element bottom guide rail is adjusted well to possess the plane and detect the calibration function.

Furthermore, the platform 6 is made of hard wear-resistant metal, vertical grooves matched with the bottom guide rails 4 are formed in two sides of the lower surface of the platform 6, and the straightness of the vertical grooves is less than or equal to 0.1 mm.

Furthermore, two parallel transverse grooves are formed in the platform 6 along the length direction, the bottoms of the support columns are connected with the transverse grooves in a sliding mode, the distance between the corresponding rollers 7 is adjusted, fixed roller fittings 8 are arranged on two sides of each support column, and each fixed roller fitting 8 comprises a positioning pin and a fixing bolt; the roller 7 is firmly fixed to the metal platform surface by means of a fixed roller fitting 8.

All be provided with two distancers 9 on the support column of every roller bearing 7, distancer 9 is laser or infrared distancer, detects through 4 dot position distances, and the adjustment corresponds the distance between the roller bearing and adjusts the depth of parallelism.

Further, the diameter of the roller 7 is 200mm, the cross section of the roller is of a cylindrical hollow structure, the weight of the roller is required to be less than 0.1% of the weight of the product to be tested in order to reduce the weight of the product body, the two ends of the roller 7 are fixed through bearings with ultra-low friction torque, and the bearings are deep groove ball bearings, angular contact ball bearings, self-aligning ball bearings or cylindrical roller bearings.

Further, the linear velocity detector 10 is a high-precision low-speed detector, a non-contact electronic and digital high-precision frequency velocimeter is adopted, the linear velocity of the product is detected through high frequency, and the instantaneous linear velocity is recorded by a time axis, so that the positioning analysis of the whole uneven circumferential quality of the product can be realized.

Further, the arc length detector 11 adopts a high-frequency exposure detector, the numbers of target points which are adhered to the outer surface of the product in advance are detected and identified, the target points are special mark points which are uniformly and closely distributed, the distances between the target points are standard, the microcomputer processor 13 can automatically calculate the arc distance between the two target points by identifying the target points with different numbers, and the instantaneous arc length distance is collected and recorded by a time axis and is input into the microcomputer processor for processing.

Further, the weight detector 12 is an electronic pressure sensor, and is configured to collect the weight of the product and input the signal to a microcomputer processor for conversion and recording.

The balancing method realized by the static balance detection device mainly comprises the following steps:

step one, assembling a static balance detection device, and adjusting equipment according to the length of a product to be detected;

the specific process is as follows: according to the length of a product 3 to be detected, the relative positions of a root detection unit 1 and a bottom guide rail 4 at the lower part of a tip detection unit 2 are adjusted on a hard ground, the bottom guide rails 4 are adjusted to be positioned on the same horizontal plane and aligned spatially through 4 azimuth detectors 5, the bottom guide rails 4 are fixed on the ground through embedded bolts and the like, meanwhile, the relative positions of a platform 6 on the bottom guide rails 4 are adjusted secondarily within a small-amplitude adjustment range in the length direction, and the platform 6 is firmly fixed on the bottom guide rails 4 through a rail stopper;

the relative position of the roller 7 is adjusted according to the diameter of a product, the parallelism adjustment of the roller 7 on the platform is accurately realized through 4 distance meters (the distance meters can be high-precision laser or infrared distance meters) carried by the roller 7, and the roller 7 is firmly fixed on the platform 6 through a fixed roller fitting 8 and a positioning pin shaft or a fixing bolt;

step two, after the equipment is debugged, the product 3 to be tested is horizontally placed on the two groups of rolling shafts 7;

step three, after the equipment is stabilized, starting the static balance detection device, recording and outputting the weight information m of the product to be detected through the weight detector 12 ₀ At the moment, the arc length detector 11 records the target point number a in the opposite direction, the product to be detected is freely released, the product to be detected freely rotates around the geometric rotation center line of the product to be detected, the equivalent mass center of the rotation body can be known to deviate from the rotation center line of the rotation body through mechanical analysis, the distance is recorded as h1, and under the action of gravity, the rotation speed of the outer cylinder is constant in the rotation process around the center lineAccelerating until the equivalent mass center is in a vertical downward position, and the linear velocity detecting instrument 10 detects the fastest rotating linear velocity v at the moment ₀ And corresponding time records are stored, at the moment, the arc length detector 11 synchronously records the number b of the target point which is opposite, and the microcomputer processor 13 automatically calculates the arc length s according to the arc distance between the a-b numbers until the static balance detection of the product to be detected is finished;

step four, opening the analysis software of the microcomputer processor and inputting the standard radius size r of the product ₀ The weight m of the product requiring additional balance weight is given through calculation and automatic analysis ₁ And a specific position x needing counterweight is given, the position x is a reverse corresponding position of the target point b, and the mass of the extra counterweight is as follows:

wherein

The above formula derivation is based on the law of conservation of energy: using the lowest point as a reference plane, and the gravitational potential energy of the product is m ₀ gh ₁ [1+sin(θ-90°)]；

The roller that this equipment selected is the roller bearing of ultralow internal friction, and in the free low-speed rotatory in-process of product, because of frictional force loss energy can be neglected, can deduce according to the conservation of energy:

while there have been shown and described what are at present considered the fundamental principles of the invention, its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims (10)

1. Quick quantitative evaluation straight shell type solid of revolution static balance detection device, its characterized in that: the device comprises a microcomputer processing unit, a root detection unit (1) and a tip detection unit (2) which are arranged in parallel relatively, wherein the microcomputer processing unit comprises a microcomputer processor (13) with a display;

the root detection unit (1) and the tip detection unit (2) both comprise platforms (6) and rollers (7), the platforms (6) are placed on a group of bottom guide rails (4) which are arranged in parallel relatively, the rollers (7) are respectively positioned above two sides of the platforms (6) and are arranged in parallel with the bottom guide rails (4), the bottoms of two sides of the rollers (7) are respectively supported by supporting columns, weight detectors (12) positioned between the two rollers (7) are respectively arranged on the two platforms (6), and linear velocity detectors (10) and arc length detectors (11) are also arranged between the two rollers (7) on the platforms of the root detection unit (1);

be used for the decubitus on roller bearing (7) between two platforms to place await measuring product (3), await measuring product (3) are the straight tube type solid of revolution, and it has repeatedly usable's target area (14) to paste on the circumference of awaiting measuring product (3), target area (14) comprise the even and accurate positioning's of customized interval distribution reflection of light mark target point, the target point has the serial number for the location detects the arc length distance.

2. The device for rapidly and quantitatively evaluating the static balance of the straight cylinder type revolving body according to claim 1, wherein: the bottom guide rail (4) is of an I-shaped structure with a rectangular cross section and is processed into a profile, the profile is used for being matched with a platform (6) on the upper portion in a precise mode, the matching gap between the bottom guide rail (4) and the platform (6) is within 0.1mm, the length of the bottom guide rail (4) is 1-2m, the bottom guide rail is made of hard wear-resistant metal and coated with an antirust agent on the surface, the flatness requirement of the bottom guide rail (4) is less than or equal to 0.1mm, and the straightness is less than or equal to 0.1 mm.

3. The device for rapidly and quantitatively evaluating the static balance of the straight-cylindrical rotary body according to claim 1 or 2, wherein: two bottom guide rail (4) both sides of every group are equipped with position detector (5) respectively, install 4 altogether, through adopting laser reflection range finding principle, realize root, the space of sharp portion detecting element bottom guide rail adjust well to possess the plane and detect the calibration function.

4. The device for rapidly and quantitatively evaluating the static balance of the straight cylinder type revolving body according to claim 1, wherein: the platform (6) is made of hard wear-resistant metal, vertical grooves matched with the bottom guide rails (4) are formed in two sides of the lower surface of the platform (6), and the straightness of the vertical grooves is less than or equal to 0.1 mm.

5. The device for rapidly and quantitatively evaluating the static balance of the straight cylinder type revolving body according to claim 1, wherein: two parallel transverse grooves are formed in the platform (6) along the length direction, the bottom of each supporting column is connected with the corresponding transverse grooves in a sliding mode, the distance between corresponding rollers (7) is adjusted, fixed roller fittings (8) are arranged on two sides of each supporting column, and each fixed roller fitting (8) comprises a positioning pin and a fixing bolt;

all be provided with two distancers (9) on the support column of every roller bearing (7), distancer (9) are laser or infrared distancer, detect through 4 dot position distances, and the adjustment corresponds distance and adjustment depth of parallelism between the roller bearing.

6. The device for rapidly and quantitatively evaluating the static balance of the straight-cylindrical rotary body according to claim 1 or 5, wherein: the rolling shaft (7) is of a hollow structure with a cylindrical section, the diameter of the rolling shaft is 200mm, two ends of the rolling shaft (7) are fixed through bearings with ultra-low friction torque, and the bearings are deep groove ball bearings, angular contact ball bearings, self-aligning ball bearings or cylindrical roller bearings.

7. The device for rapidly and quantitatively evaluating the static balance of the straight cylinder type revolving body according to claim 1, wherein: the linear velocity detection instrument (10) is a high-precision low-speed detector, adopts a non-contact electronic and digital high-precision frequency velocimeter, detects the linear velocity of a product through high frequency, and records the instantaneous linear velocity by a time axis.

8. The device for rapidly and quantitatively evaluating the static balance of the straight cylinder type revolving body according to claim 1, wherein: the arc length detector (11) adopts a high-frequency exposure detector, the numbers of target points which are pre-bonded on the outer surface of a product are detected and identified, the target points are special mark points which are uniformly and closely distributed, the distance between the target points is standard, and the arc distance between the two target points can be automatically calculated by a microcomputer processor (13) by identifying the target points with different numbers, so that the instantaneous arc length distance is collected and recorded by a time axis and is input into the microcomputer processor for processing.

9. The device for rapidly and quantitatively evaluating the static balance of the straight cylinder type revolving body according to claim 1, wherein: the weight detector (12) is an electronic pressure sensor and is used for collecting the weight of the product and inputting signals into a microcomputer processor for conversion and recording.

10. The balancing method implemented by the static balance detecting apparatus of claim 1, wherein: the method mainly comprises the following steps:

step one, assembling a static balance detection device, and adjusting equipment according to the length of a product to be detected;

step two, after the equipment is debugged, the product (3) to be tested is horizontally placed on the two groups of rolling shafts (7);

step three, after the equipment is stabilized, starting the static balance detection device, and recording and outputting the weight information m of the product to be detected through the weight detector (12) ₀ At the moment, the arc length detector (11) records the target point number a in the opposite direction, the product to be detected is freely released, the product to be detected freely rotates around the geometric rotation center line of the product to be detected, the equivalent mass center of the rotation body can be known to deviate from the rotation center line of the rotation body through mechanical analysis, the distance is recorded as h1, under the action of gravity, the rotation speed of the outer cylinder is continuously accelerated in the rotation process around the center line until the equivalent mass center is positioned at a vertical downward positionAt the moment, the linear velocity detecting instrument (10) detects the fastest rotating linear velocity v ₀ And the corresponding time record is stored, at the moment, the arc length detector (11) synchronously records the number b of the target point which is just opposite, and the microcomputer processor (13) automatically calculates the arc length s according to the arc distance between the a-b numbers until the static balance detection of the product to be detected is finished;

step four, opening the analysis software of the microcomputer processor and inputting the standard radius size r of the product ₀ The weight m of the product requiring additional balance weight is given through calculation and automatic analysis ₁ And a specific position x needing counterweight is given, the position x is a reverse corresponding position of the target point b, and the mass of the extra counterweight is as follows:

wherein

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