CN110672050B - Device and method capable of accurately adjusting and measuring length of telescopic rod of ring head screw - Google Patents
Device and method capable of accurately adjusting and measuring length of telescopic rod of ring head screw Download PDFInfo
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- CN110672050B CN110672050B CN201910779519.7A CN201910779519A CN110672050B CN 110672050 B CN110672050 B CN 110672050B CN 201910779519 A CN201910779519 A CN 201910779519A CN 110672050 B CN110672050 B CN 110672050B
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D61/00—External frames or supports adapted to be assembled around, or applied to, articles
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
A device and a method capable of accurately adjusting and measuring the length of a telescopic rod of a ring head screw are disclosed, wherein the device comprises: the device comprises a base (11), a handle (16), a linear slide rail (14), a first slide table, a second slide table, a limiting mechanism (15), a first threaded support column (12), a locking nut (13) and a driving mechanism of the second slide table; a boss is arranged at one end of the base (11), and the first threaded support column (12) is arranged on the boss at one end of the base (11); the first sliding table is used for locking the other end of the tested ring head screw telescopic rod; the second sliding table is arranged between the boss at one end of the base (11) and the first sliding table; the second sliding table is matched with the middle part of the tested ring head screw telescopic rod and can drive the tested ring head screw telescopic rod to rotate; and the driving mechanism of the second sliding table is arranged on the base (11) and connected with the second sliding table, so that the second sliding table moves along the linear sliding rail (14), and the problems of length measurement and adjustment are solved.
Description
Technical Field
The invention relates to a device and a method capable of accurately adjusting and measuring the length of a telescopic rod of a ring head screw, and belongs to the technical field of product length measurement and adjustment.
Background
With the development of aerospace technology, the development pace of various types is accelerated, the connection form between structures is complicated, and higher precision requirements are provided for product installation. Aiming at the problems that a core-level and boosting connection unlocking mechanism of a certain type is in the form of a telescopic rod with circular ring-head screws at two ends, the length is difficult to adjust, the precision is low, the efficiency is low and the like, and a method capable of accurately adjusting and measuring is lacked. The length measuring tools in the current market are different and have advantages and disadvantages, the biggest disadvantage is that an accurate starting point surface and an accurate ending point surface are needed when the tools are used, and automation cannot be realized in operation. The problems of difficult operation and low measurement precision are caused when the conventional graduated scale or vernier caliper is adopted to measure the ring head screw telescopic rod, the estimated value is contrary to the current development requirement, particularly in the high-precision aerospace industry, the size requirement of a product is strict, and the precision is often controlled to be about 1 wire, so that the conventional measuring tool does not have the use requirement. But with the continuous integration of various industries and the continuous improvement of the automation degree, the telescopic rod for accurately adjusting and measuring the ring head screw becomes possible.
Disclosure of Invention
The technical problem solved by the invention is as follows: the device is integrated with a displacement sensor, a laser display, a servo motor, a ball screw, a coupler, a bearing, an L-shaped mounting plate, a gear hoop mechanism, a linear slide rail sliding block mechanism, a limiting mechanism, a threaded support column and a locking nut. The servo motor drives the ball screw to rotate, and the ball screw drives the gear hoop and the hollow sleeve to rotate, so that the extension or the shortening of the ring head screw telescopic rod is realized. The device can accurately adjust the length of the ring head screw telescopic rod and observe the numerical value of the ring head screw telescopic rod, can highly realize automation and integration, can be applied to the environment with harsh requirements on the length of the ring head screw telescopic rod and various complex conditions thereof, and overcomes the defects of large difficulty in adjusting the length of an annular rod piece, low adjusting precision, low adjusting efficiency and the like.
The technical scheme of the invention is as follows: an apparatus for precisely adjusting and measuring the length of the extension rod of a ring head screw, comprising: the device comprises a base 11, a handle 16, a linear slide rail 14, a first sliding table, a second sliding table, a limiting mechanism 15, a first threaded support column 12, a first locking nut 13 and a driving mechanism of the second sliding table;
a boss is arranged at one end of the base 11, and the first threaded support column 12 is arranged on the boss at one end of the base 11; the first locking nut 13 is arranged on the first threaded support column 12 and used for locking one end of a tested ring head screw telescopic rod; the linear slide rail 14 is arranged on the base 11; the limiting mechanism 15 is arranged at one end of the linear slide rail 14; the handles 16 are arranged on two sides of the base 11;
the first sliding table is arranged on the linear slide rail 14 and can slide on the linear slide rail 14; the first sliding table is used for locking the other end of the tested ring head screw telescopic rod;
the second sliding table is arranged between the boss at one end of the base 11 and the first sliding table; the second sliding table is matched with the middle part of the tested ring head screw telescopic rod and can drive the tested ring head screw telescopic rod to rotate;
and the driving mechanism of the second sliding table is installed on the base 11 and connected with the second sliding table to realize the movement of the second sliding table along the linear sliding rail 14.
Preferably, the base 11 is a base body of the device, the base 11 is a rectangular flat plate, and a boss is arranged at one end of the rectangular flat plate, and the linear slide rail 14 can be installed on the rectangular flat plate.
Preferably, the first slide table includes: the device comprises a first sliding base 31, a displacement laser display 32, a displacement sensor 33, a second threaded support column 34, a second locking nut 35 and a first sliding block 36;
the first slide base 31 is used for mounting a measuring component and a base body of a connecting component; the displacement laser display 32 is used for displaying the actual length of the telescopic rod; the displacement sensor 33 is used for measuring the current length of the telescopic rod; a second threaded support post 34 is used to secure the sliding end of the ring head screw 22; the second locking nut 35 is used for locking the telescopic rod to prevent jumping; the first slider 36 is used for realizing the reciprocating motion of the first sliding table along the guide rail;
Preferably, the first threaded support post 12 is used to secure the fixed end of the ring head screw 22; the first locking nut 13 is used for locking the telescopic rod to prevent jumping.
Preferably, the linear slide 14 provides a moving path, and the limiting mechanism 15 limits the moving distance.
Preferably, the first locking nut 13 is connected with the base 11 through a combination formed by threaded connection on the first threaded support column 12; one end of the linear slide rail 14 abuts against the left boss, and the other end abuts against the limiting mechanism 15; the limiting mechanism 15 and the handle 16 are matched with the base 11 through threaded connection.
Preferably, the handles 16 are used for transportation, and the two handles 16 are symmetrically arranged on two sides of the base 11 and are parallel to the base.
Preferably, a coordinate system O-XY is established, the origin is at any position, and the plane of the XOY is vertical to the plane of the guide rail; the X axis is parallel to the guide rail; the X-axis is orthogonal to the Y-axis.
Preferably, the linear slide 14 is mounted horizontally on the base 11 along the X-axis.
Preferably, two linear sliding rails 14 are arranged in parallel on the base 11.
The invention discloses a method for accurately adjusting and measuring the length of a telescopic rod of a ring head screw, which comprises the following steps:
the first step is as follows: the ring head screw 22 is connected with the hollow rotating sleeve 21 through threads, and the reserved lengths of the ring head screws on the two sides are kept approximately equal and are in a horizontal position;
secondly, mounting the two half gear hoops 23 on the hollow rotating sleeve 21 through the inserting pin inserting holes, and connecting and fixing the two half gear hoops 23 by using bolts 24;
thirdly, adjusting the position of the second sliding table to correspond to the length of the telescopic rod of the ring head screw as much as possible;
fourthly, horizontally placing the ring head screw telescopic rod, firstly placing the ring head screw at one end into the threaded support column 13 at the fixed end, and then finely adjusting the position of the second sliding table to ensure that the threaded support column 34 at the movable end can also be vertically placed into the ring head screw at the other end;
fifthly, tightening locking nuts on the threaded support columns at the two ends to prevent the telescopic rod of the ring head screw from moving in the measuring process;
sixthly, moving the position of the second sliding table to enable the first sliding screw rod 44 to be meshed with the gear hoop 23;
seventhly, opening the first servo motor 42, driving the first ball screw 44 to rotate positively when the first servo motor 42 rotates positively, driving the gear hoop 23 to be meshed and rotate clockwise by the first ball screw 44 to enable the ring screw telescopic rod hollow rotating sleeve 21 to rotate clockwise, and extending the ring screws 22 at two ends, wherein the left side is a fixed end and the right side is a sliding end, when the ring screws 22 extend simultaneously, the whole length of the mechanism to be measured changes, the first sliding table slides rightwards along the linear sliding rail, the gear hoop 23 deviates from the meshing position, at the moment, starting the second servo motor 51, and the second ball screw 54 rotates positively to drive the second sliding table to slide rightwards along the linear sliding rail according to the deviated numerical value to adjust the position, so that the first ball screw 44 is always meshed with the gear hoop 23 until the target distance is reached;
eighthly, the first servo motor 42 is turned on, when the first servo motor 42 rotates reversely, the first ball screw 44 is driven to rotate reversely, when the first ball screw 44 rotates reversely, the gear hoop 23 is driven to engage and rotate anticlockwise, so that the hollow rotating sleeve 21 of the ring head screw telescopic rod also rotates anticlockwise to cause the ring head screws 21 at two ends to be shortened, because the left side is a fixed end and the right side is a sliding end, when the ring head screw 21 is shortened simultaneously, the whole length of the mechanism to be measured is changed, the first sliding table slides leftwards along the linear sliding rail, the gear hoop 23 deviates from the original position, at this time, the second servo motor 51 is started, the second ball screw 54 rotates reversely, the second sliding table is driven to slide leftwards along the linear sliding rail according to the deviated numerical value to adjust the position, so that the first ball screw 44 is always engaged with the gear hoop 23 until the target distance is reached, and finally, accurate measurement is realized.
Compared with the prior art, the invention has the advantages that:
(1) the automatic adjusting device based on the sensor and the electric control realizes the automatic adjustment of the length of the tool, releases labor force and improves the adjusting efficiency.
(2) According to the invention, advanced means such as a displacement sensor and a laser display are used for reading, so that the product measurement precision is improved, and errors caused by manual reading are avoided.
(3) The invention adopts a worm and gear form to transmit torque, has the advantages of compact structure, stable operation, self-locking performance, realization of the length adjustment of rod products with large structure and high quality, and higher application prospect, and the transmission ratio of the structure is up to that of the invention.
(4) The adjustable screw rod adjusting mechanism is simple in structure, convenient for maneuvering operation, capable of adjusting various ring head screw rods with different diameters only by replacing the threaded support columns, capable of greatly saving tooling production cost and high in universality.
(5) The invention has convenient operation, does not need complex operation, can adjust the required length to the required length only by effectively fixing the product, and has low personnel training cost.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a complementary structure of the present invention;
fig. 3 is a schematic structural view of the gear hoop mechanism of the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments.
The invention can be used for measuring the ring head screw mechanism in the unlocking mechanism of the spacecraft central core stage and boosting in a connecting rod form, and the unlocking mechanism comprises a cylinder section, a ring head screw mechanism, an explosion bolt and the like. Because the joint bearing is embedded on the inner side of the ring head screw, the freedom degree of movement is high, and the invention provides a scheme that the traditional caliper cannot realize measurement; meanwhile, the problems that the unlocking mechanism is large in mass, manual adjustment requires cooperation of multiple persons, time and labor are consumed, and efficiency is extremely low are solved; meanwhile, the unlocking mechanism needs to be installed at high altitude, the required length precision is within 10 wires, and the unlocking mechanism beyond the range cannot meet the connection between the core level and the boosting; therefore, the scheme of the invention solves the difficult problem of boosting and core-level butt joint of the aerospace craft, the device of the invention has important significance, realizes reliable positioning of the unlocking mechanism, replaces manual adjustment by automatic adjustment, has the adjustment precision reaching the requirement of 1 wire, and greatly meets the requirements of development and use of the type.
The invention discloses a device capable of accurately adjusting and measuring the length of a telescopic rod of a ring head screw, which comprises: the device comprises a base 11, a handle 16, a linear slide rail 14, a first sliding table, a second sliding table, a limiting mechanism 15, a first threaded support column 12, a locking nut 13 and a driving mechanism of the second sliding table; a boss is arranged at one end of the base 11, and the first threaded support column 12 is arranged on the boss at one end of the base 11; the locking nut 13 is arranged on the threaded support column 12 and used for locking one end of a tested ring head screw telescopic rod; the linear slide rail 14 is arranged on the base 11; the limiting mechanism 15 is arranged at one end of the linear slide rail 14; the handles 16 are arranged on two sides of the base 11; the first sliding table is arranged on the linear slide rail 14 and can slide on the linear slide rail 14; the first sliding table is used for locking the other end of the tested ring head screw telescopic rod; the second sliding table is arranged between the boss at one end of the base 11 and the first sliding table; the second sliding table is matched with the middle part of the tested ring head screw telescopic rod and can drive the tested ring head screw telescopic rod to rotate; the driving mechanism of the second sliding table is arranged on the base 11 and connected with the second sliding table to realize the movement of the second sliding table along the linear sliding rail 14, thereby solving the problems of length measurement and adjustment
The second slide table preferably includes: the gear locking mechanism comprises a second sliding base 41, a first servo motor 42, a first L-shaped mounting plate 43, a first ball screw 44, a first coupler 45, a first bearing 46, a second sliding block 47, a gear hoop 23 and a bolt 24;
the second slide base 41 is used for a base body of a transmission member and a connection member; the first servo motor 42 provides power support for the screw rod mechanism; the first L-shaped mounting plate 43 is used for fixing the first servo motor; a first ball screw 44 power transmission member; the first coupler 45 is connected with the servo motor and the screw rod to realize power transmission; the first bearing 46 is used for supporting the end of the wire rod; the second slider 47 is used for realizing the reciprocating motion of the second sliding table along the guide rail, as shown in fig. 2; the gear hoop 23 and the bolt 24 mainly play a role in fixing the ring head screw telescopic rod.
The driving mechanism of the second slide table preferably includes: a second servo motor 51, a second L-shaped mounting plate 52, a second coupling 53, a second ball screw 54, and a second bearing 55;
the second servo motor 51 provides power support for the screw rod mechanism; the second L-shaped mounting plate 52 provides mounting support for the servo motor; the second coupling 53 is used as a power connecting part; the second ball screw 54 serves as a power transmission member; the second bearing 55 is used for supporting one end of the screw rod; the second servo motor 51 is matched with the second L-shaped mounting plate 52 through threaded connection, and the connecting assembly is in threaded matching connection with the base 11; one end of a second ball screw 54 is connected with the second servo motor 51 through a second coupling 53, and the other end is fixed in the inner ring of a second bearing 55; the bearing seat and the second servo motor 51 are screwed on the base 11.
The invention combines measurement and automatic adjustment into a whole, and adopts various modern means to realize the accurate automatic adjustment of a certain type of mechanism, and the device capable of accurately adjusting and measuring the length of the telescopic rod of the ring head screw comprises: the device comprises a base 11, a handle 16, a linear slide rail 14, a first sliding table, a second sliding table, a limiting mechanism 15, a first threaded support column 12, a locking nut 13 and a driving mechanism of the second sliding table.
The base 11 is a tool base body; the first threaded support post 12 is used for fixing the fixed end of the ring head screw 22; the first locking nut 13 is used for locking the telescopic rod to prevent jumping; the linear slide 14 provides a moving path; the limiting mechanism 15 limits the moving distance; the handle 16 is used for transport. The first locking nut 13 is connected with the base 11 through a combination formed by threaded connection on the first threaded support column 12; the linear slide rail 14 is horizontally installed on the base 11 along the X direction by a screw, one end of the linear slide rail is abutted against the left boss, and the other end of the linear slide rail is abutted against the limiting mechanism 15, the limiting mechanism 15 and the handle 16 and is matched with the base 11 through threaded connection.
The preferred scheme is as follows: a first slide table comprising: a first sliding base 31, a displacement laser display 32, a displacement sensor 33, a second threaded support column 34, a second lock nut 35 and a first sliding block 36, as shown in fig. 2; (ii) a
The first slide base 31 is used for mounting a measuring component and a base body of a connecting component; the displacement laser display 32 is used for displaying the actual length of the telescopic rod; the displacement sensor 33 is used for measuring the current length of the telescopic rod; a second threaded support post 34 is used to secure the sliding end of the ring head screw 22; the second locking nut 35 is used for locking the telescopic rod to prevent jumping; the first slider 36 is used to effect the reciprocating movement of the first slide table along the guide rail. Displacement sensor 33 cooperates with displacement laser display 32 through threaded connection, displacement sensor 33 and displacement laser display 32 combination pass through threaded connection and install in one side with first sliding base 31 cooperation, the combination that second lock nut 35 formed through threaded connection on the second screw support post 34 passes through threaded connection and first sliding base 31 cooperation, first slider 36 installs in first sliding base 31 below through threaded connection, contact with linear slide 14, constitute first sliding platform jointly. When the length of the telescopic rod of the ring head screw changes, the first sliding table can move along the linear sliding rail 14.
The preferred scheme is as follows: a second slide table comprising: the gear locking mechanism comprises a second sliding base 41, a first servo motor 42, a first L-shaped mounting plate 43, a first ball screw 44, a first coupler 45, a first bearing 46, a second sliding block 47, a gear hoop 23 and a bolt 24;
the second slide base 41 is used for a base body of a transmission member and a connection member; the first servo motor 42 provides power support for the screw rod mechanism; the first L-shaped mounting plate 43 is used for fixing the first servo motor; a first ball screw 44 power transmission member; the first coupler 45 is connected with the servo motor and the screw rod to realize power transmission; the first bearing 46 is used for supporting the end of the wire rod; the second slide 47 is used to effect the reciprocating movement of the second slide table along the guide rail. As shown in fig. 3, the gear anchor ear 23 and the bolt 24 mainly function to fix and drive the ring head screw telescopic rod to rotate. First servo motor 42 passes through threaded connection and the cooperation of first L type mounting panel 43, and the connection assembly passes through the screw and cooperates with second sliding bottom 41, and first ball 44 one end links to each other with first servo motor 42 through first shaft coupling 45, and the other end is fixed in first bearing 46 inner circle, and the bearing frame spiro union is on second sliding bottom 41. The gear anchor ear 23 and the bolt 24 are used in a sleeved mode and used for fixing the hollow rotating sleeve 21 and are meshed and connected with the first ball screw 44, and the second sliding block 47 is connected to the joint of the linear sliding rail 14 below the second sliding base 41 in a threaded mode. When the first servo motor 42 is powered on, the first ball screw 44 drives the gear anchor ear 23 to rotate, so that the thread of the ring head screw 22 extends or shortens, and the extension or shortening of the whole object to be measured is realized.
The preferred scheme is as follows: a drive mechanism for the second slide table comprising: a second servo motor 51, a second L-shaped mounting plate 52, a second coupling 53, a second ball screw 54, and a second bearing 55;
the second servo motor 51 provides power support for the screw rod mechanism; the second L-shaped mounting plate 52 provides mounting support for the servo motor; the second coupling 53 is used as a power connecting part; the second ball screw 54 serves as a power transmission member; the second bearing 55 is used for supporting one end of the screw rod; the second servo motor 51 is matched with the second L-shaped mounting plate 52 through threaded connection, and the connecting assembly is in threaded matching connection with the base 11; one end of a second ball screw 54 is connected with the second servo motor 51 through a second coupling 53, and the other end is fixed in the inner ring of a second bearing 55; the bearing seat and the second servo motor 51 are screwed on the base 11. When the second servo motor is powered on, the second ball screw 54 rotates, so that the second sliding table can move along the direction of the linear slide rail 14, and the first ball screw 44 is always meshed with the gear hoop 23. Thereby ensuring that the length of the measured object can be accurately measured.
The further preferred scheme is as follows: in the device, the gear hoop 23 is arranged on a telescopic rod of a ring head screw along the circumferential direction, one end of the ring head screw is arranged on the threaded support column 12, the other end of the ring head screw is arranged on the threaded support column 34 of the first sliding table, and the ring head screw is tightly pressed by nuts at two sides. At this time, the power is turned on, the displacement sensor 33 works, the displacement laser display 32 displays real-time numerical values, at this time, the first servo motor 42 is controlled to be electrically rotated to drive the first ball screw 44 to rotate forwards or backwards, when the first ball screw 44 rotates positively, the gear hoop 23 is driven to engage and rotate clockwise, so that the hollow rotating sleeve 21 of the ring head screw telescopic rod also rotates clockwise, the ring head screws 22 at two ends extend, because the left side is a fixed end and the right side is a sliding end, when the ring head screw 22 extends simultaneously, the whole length of the mechanism to be measured changes, the first sliding table slides rightwards along the linear sliding rail, the gear hoop 23 deviates from the meshing position, at this time, starting the second servo motor 51, and rotating the second ball screw 54 forward to drive the second sliding table to slide rightward to adjust the position according to the deviated numerical value, so that the first ball screw 44 is always meshed with the gear hoop 23; when the first ball screw 44 rotates reversely, the gear hoop 23 is driven to be meshed and rotate anticlockwise, the hollow rotating sleeve 21 of the ring screw telescopic rod also rotates anticlockwise, the ring screws 21 at two ends are shortened, the left side is a fixed end, the right side is a sliding end, the ring screws 21 are shortened simultaneously, the overall length of a tested mechanism can be changed, the first sliding table slides leftwards along the linear sliding rail, the gear hoop 23 deviates from an original position, at the moment, the second servo motor 51 is started, the second ball screw 54 rotates reversely, the second sliding table is driven to slide leftwards according to a deviated numerical value to adjust the position, the first ball screw 44 is always meshed with the gear hoop 23, the ring screw telescopic rod is adjusted in real time according to requirements, and high-precision measurement is achieved.
Further preferred embodiments are as follows:
the further scheme of meeting the stress of the ball screw is realized by firstly calculating the stress of the ball screw allowable axial load according to the bending coefficient of the selected material, and the calculation formula is preferably as follows:
in the formula, P is the allowable axial load of the screw rod; a is a set safety factor, and is preferably 0.5; e is Young's modulus, preferably 2.08X 105N/mm2(MPa); d is the base diameter of the screw shaft; l is the installation distance(ii) a n is the number of the fixed supports.
The further preferred scheme is as follows: the bottom diameter of the selected ball screw is 27.3mm, the number of the fixed supports is 2, and when the installation distance is 1500mm, the allowable axial load of the screw is 50.2KN < Ca rated load, so that the optimal constraint condition is met, and the stress of the ball screw can be further improved.
Through type selection analysis, after the allowable axial load of the screw rod is determined, the nominal diameter of the screw rod is 32mm, the nominal lead is 10mm, and the specification size of the screw rod is finally determined.
And realizing a further scheme of the use requirement of the servo motor. Calculating according to the allowable axial force load of the screw rod
The allowable rotating speed of the ball screw is preferably calculated by the following formula:
in the formula, N is the number of revolutions, and γ is a coefficient of a lead screw attachment method, and is preferably 3.927.
The further preferred scheme is as follows: let N ≈ 7.9 × 103r/min, therefore, a medium inertia servo motor is preferably selected, and the power of the medium inertia servo motor is preferably 1.5 KW; rated torque 7015 N.M; the motor inertia JM is preferably 0.00123Kg.m, the highest rotating speed is preferably 24000mm/min & gt 7900mm/min, the transmission ratio is preferably 1, the preferable constraint condition is met, and the use requirement of the servo motor can be further improved.
The further scheme that the gear hoop and the ball screw are meshed and rotate is realized. The pitch of the gear hoop is 10 according to the lead specification of the ball screw, and according to the formula:
P＝m×π
in the above formula, P is the pitch, m is the modulus, and m is calculated to be 3.2, assuming that the gear pitch circle diameter is 150, the number of teeth is 47, the addendum circle diameter is 156.8, the dedendum circle diameter is 142, and the tooth width is equal to the tooth space width and is equal to 5. Satisfy and satisfy this preferred constraint condition, can realize the further improvement of meshing transmission between ball screw and the gear staple bolt.
As shown in fig. 1, the second slide table driving mechanism, whose second L-shaped mounting plate 52 is installed at a distance of about 200mm from the left boss, enables the slide table to have a sufficient reciprocating distance, preferably a distance of 10mm from the edge of the base plate, and the first L-shaped mounting plate 43 is installed on the second slide table, preferably a distance of 20mm from the edge of the second slide table.
As shown in fig. 1, the first ball screw 44 and the second ball screw 54 are mounted on the servo motor at one end and fixed to the bearing at the other end, and preferably, the distance between the ball screws and the bottom surface is not less than 15 mm.
The preferred mode of operation of the apparatus of the invention is as follows: firstly, the gear hoop is arranged on the hollow rotating sleeve 21, then one end of the assembled telescopic rod of the ring head screw is horizontally placed into the threaded support 13 column of the boss of the base, the other end is placed into the threaded support column 34 of the first sliding table, then the ring head screws at two ends are locked by the locking nuts, so that the whole telescopic rod is kept fixed, at the moment, the first servo motor 42 is opened, the first servo motor 42 rotates forwards or backwards to drive the first ball screw 44 to rotate forwards or backwards, the gear hoop 23 rotates by being meshed with the first ball screw 44, so that the hollow rotating sleeve 21 of the telescopic rod of the ring head screw rotates, thereby the ring head screw is extended or shortened, in order to avoid the length change of the telescopic rod of the ring head screw to make the gear hoop 23 deviate from the original position and not be meshed with the first ball screw 44, at the moment, the second servo motor 51 is opened to make the second servo motor 51 rotate backwards or forwards, the second ball screw 54 is driven to rotate forwards or backwards, so that power is provided for the second sliding table to move along the direction of the sliding rail, the first ball screw 54 is always meshed with the gear hoop 23, and the purpose of accurate measurement is achieved.
The further accurate length measuring method of the invention is as follows: the ring head screw 22 is connected with the hollow rotating sleeve 21 through threads, and the reserved lengths of the ring head screws on the two sides are kept approximately equal and are in a horizontal position; installing the two half gear hoops 23 on the hollow rotating sleeve 21 through the inserting pin inserting holes, and connecting and fixing the two half gear hoops 23 by using bolts 24; the position of the second sliding table is adjusted to be equal to the length of the telescopic rod of the ring head screw as much as possible; horizontally placing a ring head screw telescopic rod, firstly placing a ring head screw at one end into the threaded support column 13 at the fixed end, and then finely adjusting the position of the second sliding table to ensure that the threaded support column 34 at the movable end can also be vertically placed into the ring head screw at the other end; locking nuts are screwed on the threaded support columns at the two ends, so that the telescopic rod of the ring head screw is prevented from moving in the measuring process; moving the position of the second sliding table to enable the first sliding screw rod 44 to be meshed with the gear hoop 23; opening the first servo motor 42, driving the first ball screw 44 to rotate positively when the first servo motor 42 rotates positively, driving the gear hoop 23 to be meshed to rotate clockwise by the first ball screw 44 to enable the ring screw telescopic rod hollow rotating sleeve 21 to rotate clockwise as well, so that the ring screws 22 at two ends are extended, because the left side is a fixed end and the right side is a sliding end, when the ring screws 22 are extended simultaneously, the whole length of the mechanism to be measured is changed, the first sliding table slides rightwards along the linear sliding rail, the gear hoop 23 deviates from the meshing position, at the moment, starting the second servo motor 51, driving the second ball screw 54 to rotate positively, driving the second sliding table to slide rightwards along the linear sliding rail according to the deviated numerical value to adjust the position, and enabling the first ball screw 44 to be meshed with the gear hoop 23 all the time until the target distance is reached; opening first servo motor 42, drive first ball screw 44 when first servo motor 42 reverses, drive gear staple bolt 23 meshing when first ball screw 44 reverses and do anticlockwise rotation, make ring head screw telescopic link hollow rotating sleeve 21 do anticlockwise rotation equally, cause both ends ring head screw 21 to shorten, because the left side is the stiff end, the right side is the slip end, shorten simultaneously when ring head screw 21, can make the whole length of mechanism under test change, first sliding platform slides along linear slide rail left, the skew home position of gear staple bolt 23, at this moment, start second servo motor 51, second ball screw 54 reverses, drive second sliding platform according to skew numerical value along linear slide rail sliding adjustment position left, make first ball screw 44 mesh with gear staple bolt 23 all the time, until reaching the target distance, finally realize accurate measurement.
The invention obtains good effect through actual test, solves the problem of large connection error between a certain model core level and boosting, realizes the major leap from manual adjustment to mechanical adjustment, saves the input cost of manpower and material resources, improves the efficiency, ensures that the measurement precision is accurate to 1 wire from 1 mm originally, greatly meets the installation requirement of the model, and lays a firm foundation for the smooth development of a new model.
It should be understood that although the present invention has been described in more detail, such as above, the above embodiments are not intended to limit the present invention. It will be apparent to those skilled in the art from this disclosure that many changes and modifications can be made, or equivalents modified, in the embodiments of the invention without departing from the scope of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention.
Claims (10)
1. A device capable of accurately adjusting and measuring the length of a telescopic rod of a ring head screw is characterized by comprising: the device comprises a base (11), a handle (16), a linear slide rail (14), a first sliding table, a second sliding table, a limiting mechanism (15), a first threaded support column (12), a first locking nut (13) and a driving mechanism of the second sliding table;
a boss is arranged at one end of the base (11), and the first threaded support column (12) is arranged on the boss at one end of the base (11); the first locking nut (13) is arranged on the first threaded support column (12) and used for locking one end of a tested ring head screw telescopic rod; the linear slide rail (14) is arranged on the base (11); the limiting mechanism (15) is arranged at one end of the linear slide rail (14); the handles (16) are arranged on two sides of the base (11);
the first sliding table is arranged on the linear sliding rail (14) and can slide on the linear sliding rail (14); the first sliding table is used for locking the other end of the tested ring head screw telescopic rod;
the second sliding table is arranged between the boss at one end of the base (11) and the first sliding table; the second sliding table is matched with the middle part of the tested ring head screw telescopic rod and can drive the tested ring head screw telescopic rod to rotate;
the driving mechanism of the second sliding table is arranged on the base (11) and connected with the second sliding table to realize the movement of the second sliding table along the linear sliding rail (14);
the mode that can accurate regulation and measure ring head screw telescopic link length is as follows:
the ring head screws (22) are connected with the hollow rotating sleeve (21) through threads, and the reserved lengths of the ring head screws on the two sides are kept approximately equal and are in a horizontal position;
installing the two half gear hoops (23) on the hollow rotating sleeve (21) through the inserting pin inserting holes, and connecting and fixing the two half gear hoops (23) by using bolts (24);
adjusting the position of the second sliding table to correspond to the length of the telescopic rod of the ring head screw as much as possible;
horizontally placing a ring head screw telescopic rod, firstly placing a ring head screw at one end into a threaded support column (13) at the fixed end, and then finely adjusting the position of a second sliding table to ensure that a threaded support column (34) at the movable end can also be vertically placed into a ring head screw at the other end;
locking nuts are screwed on the threaded support columns at the two ends, so that the telescopic rod of the ring head screw is prevented from moving in the measuring process;
moving the position of the second sliding table to enable the first sliding screw rod (44) to be meshed with the gear hoop (23);
opening a first servo motor (42), driving a first ball screw (44) to rotate positively when the first servo motor (42) rotates positively, driving a gear hoop (23) to be meshed and rotate clockwise by the first ball screw (44) to enable a ring screw telescopic rod hollow rotating sleeve (21) to rotate clockwise, causing ring screws (22) at two ends to extend, because the left side is a fixed end and the right side is a sliding end, when the ring screws (22) extend simultaneously, the whole length of a mechanism to be tested is changed, a first sliding table slides rightwards along a linear sliding rail, the gear hoop (23) deviates from a meshing position, starting a second servo motor (51), driving a second ball screw (54) to rotate positively, driving the second sliding table to slide rightwards along the linear sliding rail according to a deviated numerical value to adjust the position, and enabling the first ball screw (44) to be meshed with the gear hoop (23) all the time, until the target distance is reached;
opening a first servo motor (42), driving a first ball screw (44) to rotate reversely when the first servo motor (42) rotates reversely, driving a gear hoop (23) to engage and rotate anticlockwise when the first ball screw (44) rotates reversely, enabling the ring screw telescopic rod hollow rotating sleeve (21) to rotate anticlockwise, shortening ring screws (21) at two ends, enabling the whole length of a mechanism to be tested to change due to the fact that the left side is a fixed end and the right side is a sliding end, enabling a first sliding table to slide leftwards along a linear sliding rail and a gear hoop (23) to deviate from an original position when the ring screws (21) are shortened simultaneously, starting a second servo motor (51), rotating a second ball screw (54) reversely, driving a second sliding table to slide leftwards along the linear sliding rail according to a deviated numerical value to adjust the position, enabling the first ball screw (44) to be engaged with the gear hoop (23) all the time, and finally, realizing accurate measurement until the target distance is reached.
2. The device for precisely adjusting and measuring the length of the telescopic rod of the ring head screw as claimed in claim 1, wherein: the base (11) is a base body of the device, the base (11) is a rectangular flat plate, a boss is arranged at one end of the base, and a linear sliding rail (14) can be installed on the rectangular flat plate.
3. The device for precisely adjusting and measuring the length of the telescopic rod of the ring head screw as claimed in claim 1, wherein: a first slide table comprising: the device comprises a first sliding base (31), a displacement laser display (32), a displacement sensor (33), a second threaded supporting column (34), a second locking nut (35) and a first sliding block (36);
the first sliding base (31) is used for installing a measuring component and a base body of a connecting component; the displacement laser display (32) is used for displaying the actual length of the telescopic rod; the displacement sensor (33) is used for measuring the current length of the telescopic rod; the second thread supporting column (34) is used for fixing the sliding end of the ring head screw (22); the second locking nut (35) is used for locking the telescopic rod to prevent jumping; the first sliding block (36) is used for realizing the reciprocating motion of the first sliding table along the guide rail;
displacement sensor (33) pass through threaded connection and displacement laser display (32) cooperation, displacement sensor (33) pass through threaded connection and first sliding base (31) cooperation with displacement laser display (32) assembly, threaded connection and first sliding base (31) cooperation are passed through to assembly that threaded connection formed on second lock nut (35) passes through second screw support post (34), install in first sliding base (31) below through threaded connection first slider (36), contact with the linear slide rail, constitute first sliding stand jointly.
4. The device for precisely adjusting and measuring the length of the telescopic rod of the ring head screw as claimed in claim 1, wherein: the first threaded support column (12) is used for fixing the fixed end of the ring head screw (22); the first locking nut (13) is used for locking the telescopic rod to prevent jumping.
5. The device for precisely adjusting and measuring the length of the telescopic rod of the ring head screw as claimed in claim 1, wherein: the linear sliding rail (14) provides a moving path, and the limiting mechanism (15) limits the moving distance.
6. The device for precisely adjusting and measuring the length of the telescopic rod of the ring head screw as claimed in claim 1 or 4, wherein: the first locking nut (13) is connected with the base (11) through a combination body formed by threaded connection on the first threaded support column (12); one end of the linear slide rail (14) is abutted against the left boss, and the other end is abutted against the limiting mechanism (15); the limiting mechanism (15) and the handle (16) are matched with the base (11) through threaded connection.
7. The device for precisely adjusting and measuring the length of the telescopic rod of the ring head screw as claimed in claim 1, wherein: the handles (16) are used for transferring, and the two handles (16) are respectively and symmetrically arranged on two sides of the base (11) and are parallel to the base.
8. The device for precisely adjusting and measuring the length of the telescopic rod of the ring head screw as claimed in claim 1, wherein: establishing a coordinate system O-XY with an origin at any position and a plane of the XOY perpendicular to a plane of the guide rail; the X axis is parallel to the guide rail; the X-axis is orthogonal to the Y-axis.
9. The device for precisely adjusting and measuring the length of the telescopic rod of the ring head screw as claimed in claim 8, wherein: the linear slide rail (14) is horizontally arranged on the base (11) along the X axis.
10. A method for accurately adjusting and measuring the length of a telescopic rod of a ring head screw is characterized by comprising the following steps:
the first step is as follows: the ring head screws (22) are connected with the hollow rotating sleeve (21) through threads, and the reserved lengths of the ring head screws on the two sides are kept approximately equal and are in a horizontal position;
secondly, mounting the two half gear hoops (23) on the hollow rotating sleeve (21) through the inserting needle inserting holes, and connecting and fixing the two half gear hoops (23) through the bolts (24);
thirdly, adjusting the position of the second sliding table to correspond to the length of the telescopic rod of the ring head screw as much as possible;
fourthly, horizontally placing the ring head screw telescopic rod, firstly placing the ring head screw at one end into the threaded support column (13) at the fixed end, and then finely adjusting the position of the second sliding table to ensure that the threaded support column (34) at the movable end can also be vertically placed into the ring head screw at the other end;
fifthly, tightening locking nuts on the threaded support columns at the two ends to prevent the telescopic rod of the ring head screw from moving in the measuring process;
sixthly, moving the position of the second sliding table to enable the first sliding screw rod (44) to be meshed with the gear hoop (23);
seventh step, the first servo motor (42) is opened, when the first servo motor (42) rotates positively, the first ball screw (44) is driven to rotate positively, the first ball screw (44) rotates positively to drive the gear hoop (23) to be meshed and rotate clockwise, the ring screw telescopic rod hollow rotating sleeve (21) also rotates clockwise, the ring screws (22) at two ends extend, because the left side is a fixed end and the right side is a sliding end, when the ring screws (22) extend simultaneously, the whole length of the mechanism to be measured can be changed, the first sliding table slides rightwards along the linear sliding rail, the gear hoop (23) deviates from the meshing position, at the moment, the second servo motor (51) is started, the second ball screw (54) rotates positively to drive the second sliding table to slide rightwards along the linear sliding rail according to the deviated numerical value to adjust the position, so that the first ball screw (44) is always meshed with the gear hoop (23), until the target distance is reached;
eighthly, opening the first servo motor (42), driving the first ball screw (44) to rotate reversely when the first servo motor (42) rotates reversely, driving the gear hoop (23) to engage and rotate anticlockwise when the first ball screw (44) rotates reversely, enabling the ring screw telescopic rod hollow rotating sleeve (21) to rotate anticlockwise, shortening the ring screws (21) at two ends, wherein the left side is a fixed end, and the right side is a sliding end, when the ring screws (21) are shortened simultaneously, the whole length of the mechanism to be tested can be changed, the first sliding table slides leftwards along the linear sliding rail, the gear hoop (23) deviates from the original position, at the moment, starting the second servo motor (51), rotating the second ball screw (54), driving the second sliding table to slide leftwards along the linear sliding rail according to the deviated numerical value, and adjusting the position, so that the first ball screw (44) is always engaged with the gear hoop (23), and finally, realizing accurate measurement until the target distance is reached.
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| CN201910779519.7A CN110672050B (en) | 2019-08-22 | 2019-08-22 | Device and method capable of accurately adjusting and measuring length of telescopic rod of ring head screw |
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| CN201910779519.7A CN110672050B (en) | 2019-08-22 | 2019-08-22 | Device and method capable of accurately adjusting and measuring length of telescopic rod of ring head screw |
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| CN112659017B (en) * | 2020-12-17 | 2022-05-06 | 中国航空综合技术研究所 | Pipeline connecting piece axial error simulation assembly device and testing method thereof |
| CN112945056B (en) * | 2021-01-26 | 2023-03-07 | 浙江德福精密驱动制造有限公司 | High frock of measurement center |
| CN113252076B (en) * | 2021-05-18 | 2024-05-07 | 厦门澄志精密科技有限公司 | Test platform for developing high-precision photogrammetry software |
| CN113353733B (en) * | 2021-06-02 | 2023-07-14 | 太原严格科创有限公司 | Automatic change equipment action debugging device |
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