CN113739834B - Indicating meter calibrating device - Google Patents
Indicating meter calibrating device Download PDFInfo
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- CN113739834B CN113739834B CN202110968281.XA CN202110968281A CN113739834B CN 113739834 B CN113739834 B CN 113739834B CN 202110968281 A CN202110968281 A CN 202110968281A CN 113739834 B CN113739834 B CN 113739834B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention relates to an indicator verification device. The indicator calibrating device is suitable for calibrating projects of the influence of the repeatability of an indicator and the radial stress of a measuring rod on an indicating value, and comprises a base, a semi-cylindrical side block used for enabling a measuring head of the indicator to contact for calibrating, a ribbed workbench used for providing a plane placement area for the semi-cylindrical side block, an indicator mounting assembly used for mounting the indicator, and a height adjusting assembly used for adjusting the height of the indicator mounting assembly relative to the upper surface of the base; the height adjusting assembly comprises a rack arranged on the base at an included angle and a gear control assembly connected with the rack in a meshed mode, and the gear control assembly is connected with the indicator mounting assembly and used for driving the indicator mounting assembly to move along the length direction of the rack so as to adjust the height. Through adjusting gear control assembly and rack engagement's position, can realize the altitude mixture control of instruction table installation component, this regulation mode is simple, and the regulation precision is high.
Description
Technical Field
The invention relates to the technical field of metrological verification, in particular to an indicator verification device.
Background
The national calibration regulations indicate that the calibration project of the indicator meter type metering instrument has the influence of the repeatability of indication values and the radial stress of the measuring rod on the indication values, and the main instrument used is matched equipment consisting of a semi-cylindrical side block, a rigid meter frame and a ribbed workbench, but the operation of the existing matched equipment is complicated.
When the repeatability project is verified, the semi-cylindrical side block is firstly placed on the ribbed workbench, the indicator is installed on the rigid meter frame, and the installation height of the indicator is lifted through rotation of the height adjusting nut on the rigid meter frame, so that the indicator measuring head is in contact with the plane area of the semi-cylindrical side block. And then, carrying out fine adjustment on the height according to the initial fixing position, so that the indicator is approximately indicated at a zero position, and finally locking fastening screws of the rigid meter frame, so that the indicator is fixed in height. However, the adjustment of the height adjustment nut is very inaccurate, the initial height is preset only by personal experience, then the adjustment is finely adjusted, the fastening screw is used for fastening the rigid meter frame only, the height adjustment nut is still in a loose state, and the height adjustment nut is manually screwed after the fastening screw is locked, so that the gap between the height adjustment nut and the rigid meter frame during operation is prevented from directly affecting the measurement result.
The repeatability project is needed to be carried out at the initial position, the middle position and the last position of the indicator, after zero position (initial measurement) is finished, fastening screws of the rigid meter frame are loosened, and the height and the position of the indicator are continuously adjusted, so that the indicator is approximately aligned to the middle and upper limit positions of the measuring range.
The supporting equipment only needs to adjust the position of the indicator for 3 times when the operation is repeated, and can not basically align the initial (middle and final) position by one-time adjustment, and proper fine adjustment of the height of the rigid meter frame is needed, and meanwhile, the fastening screw of the rigid meter frame can also have a small influence on the height of the indicator, so that the operation is not very quick when the initial (middle and final) position of the indicator is found. This small effect is particularly pronounced for indicators with a measuring range of (0-1) mm.
The effect of the radial force of the measuring rod on the indication value is usually carried out simultaneously with the repeatability. However, when the existing supporting equipment is subjected to radial stress operation, the semi-cylindrical side blocks are directly translated, so that the gauge head of the indicator is contacted with the arc-shaped cylindrical surface, and the indication value of the contact inflection point is found. The project also needs to be carried out at the beginning, middle and last positions of the indicator, but the existing matched equipment can only carry out radial stress project operation after the repeatability is completely finished, so that the height of the indicator needs to be adjusted for 6 times, and the repeatability and radial stress can not be continuously finished at the same position (beginning, middle and last). The problem is that the cylindrical surface of the semi-cylindrical side block is slightly 1mm higher than the plane. If the (0-3) mm indicator needs to be repeatedly measured near 0, 1.5mm and 3mm, after the semi-cylindrical side block is directly translated to contact the cylindrical surface, the indicator measuring rod is extruded and lifted by about 1mm, if the height of the indicator is not readjusted, the indicator at the moment is at the position of 1mm, 2.5mm and 4mm, and the indicator at the (0-3) mm position is not at any position of the beginning, middle and end. The translation operation is more impossible for the indicator of (0-1) mm.
In addition, the top end of the measuring rod of the part indicator is provided with a measuring rod cap, so that the measuring rod is required to be lifted after the cap is removed when the repeated operation is carried out, or the measuring rod is clamped by forceps at the measuring head position to lift, and the operation is not very convenient.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an indicator verification device aiming at the defects in the prior art.
The technical scheme adopted for solving the technical problems is as follows: a method of constructing an indicator verification device, comprising: the measuring head of the indicator is contacted with the base to carry out verification, the semi-cylindrical side block is used for providing a plane placement area for the semi-cylindrical side block, the ribbed workbench is used for installing an indicator installation component of the indicator, and the height adjustment component is used for adjusting the height of the indicator installation component relative to the upper surface of the base;
the height adjusting assembly comprises a rack arranged on the base at an included angle and a gear control assembly meshed with the rack, wherein the gear control assembly is connected with the indicator mounting assembly and used for driving the indicator mounting assembly to move along the length direction of the rack so as to adjust the height.
Preferably, the indicator mounting assembly is disposed parallel to the base;
the indicator mounting assembly comprises a connecting portion and a mounting portion, wherein the connecting portion is used for being connected with the gear control assembly, the mounting portion is used for mounting the indicator, and the mounting portion is rotationally connected with the connecting portion so as to rotate relative to the connecting portion along the plane of the indicator mounting assembly.
Preferably, a slot for inserting the installation part is formed in the side surface of the connection part, and the installation part is rotatably inserted into the slot through a rotating structure;
the rotating structure comprises a first shaft hole, a second shaft hole and a rotating shaft, wherein the first shaft hole is arranged on the connecting part and penetrates through the slot, the second shaft hole penetrates through the mounting part, and the rotating shaft penetrates through the first shaft hole and the second shaft hole to connect the connecting part with the mounting part.
Preferably, the indicator verification device further includes a first locking structure for locking the mounting portion on the connecting portion, where the first locking structure includes a first lock hole disposed on the connecting portion and communicated with the slot, and a first lock rod penetrating through the first lock hole and used for abutting against the mounting portion to lock the mounting portion.
Preferably, the mounting portion is provided with a mounting through hole for the probe to pass through;
the indicating meter verification device further comprises a second locking structure used for locking the indicating meter on the installation portion, wherein the second locking structure comprises a second locking hole which is arranged on the installation portion and communicated with the installation through hole, and a second locking rod which penetrates through the second locking hole and is used for being abutted with the indicating meter to lock the indicating meter.
Preferably, the gear control assembly comprises a gear mechanism in meshed connection with the rack and a driving mechanism for driving the gear mechanism to rotate;
the connecting part is provided with a rack channel for the rack to pass through and a containing cavity for containing the gear mechanism, and the containing cavity is communicated with the rack channel; the gear mechanism is arranged in the accommodating cavity through a gear shaft, and the control knob is arranged outside the connecting part and is in transmission connection with the gear mechanism.
Preferably, the gear mechanism includes a first gear assembly for adjusting the height by a small movement amount and a second gear assembly for adjusting the height by a large movement amount, respectively, in meshed connection with the racks; the driving knob comprises a first knob in transmission connection with the first gear assembly and a second knob in transmission connection with the second gear assembly.
Preferably, the dial gauge calibrating device further comprises a lifting assembly for lifting the measuring rod, wherein the lifting assembly comprises a sleeve ring, a pulling block and a pulley assembly, the sleeve ring is sleeved on the measuring head and/or the measuring rod to drive the measuring rod and the measuring head to move, the pulling block is used for lifting, the pulley assembly is connected with the pulling block and the sleeve ring, and the pulley assembly is used for driving the sleeve ring to move along the axial direction of the measuring rod according to the movement of the pulling block.
Preferably, the rack is arranged perpendicular to the base.
Preferably, the semi-cylindrical side block includes a planar portion and a cylindrical portion, the highest point of the cylindrical portion being flush with the top of the planar portion.
The dial gauge calibrating device has the following beneficial effects:
the gear control assembly is connected with the rack in a meshed mode, the height of the indicating meter installation assembly can be adjusted by adjusting the meshing position of the gear control assembly and the rack, and the adjusting mode is simple and high in adjusting precision.
The lifting assembly of the measuring rod is arranged, so that the measuring rod can be lifted conveniently and rapidly, the measuring rod is not influenced by the measuring range of the indicator, and the cap of the measuring rod of the indicator is not interfered.
The cylindrical surface part and the plane part of the semi-cylindrical side block are arranged at the same height, so that the operation of repeatability and radial stress can be finished at the same indication position, and the height adjustment operation times of half of the operation times are reduced.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of a dial gauge calibration device in accordance with one embodiment of the present invention;
FIG. 2 is a schematic diagram of an indicator in the prior art;
FIG. 3 is a schematic top view of the ribbed workbench of FIG. 1;
FIG. 4 is a schematic view of the semi-cylindrical side block of FIG. 1;
FIG. 5 is a right side elevational view of the semi-cylindrical side block of FIG. 4;
FIG. 6 is a schematic top view of the connection of the dial gauge mounting assembly and the height adjustment assembly of FIG. 1;
FIG. 7 is a schematic view of the connection shown in FIG. 1;
FIG. 8 is a schematic view of the mounting portion of FIG. 1;
FIG. 9 is a schematic illustration of the configuration of the first gear assembly of FIG. 1;
FIG. 10 is a schematic illustration of the construction of the second gear assembly of FIG. 1;
FIG. 11 is a schematic view of the construction of the lift assembly shown in FIG. 1;
FIG. 12 is an enlarged partial view of area A of FIG. 6;
fig. 13 is a partial enlarged view of the area B shown in fig. 6.
In the drawings, 1, base, 2, ribbed table, 21, raised ribs, 3, semi-cylindrical side blocks, 31, planar portion, 32, cylindrical portion, 4, indicator mounting assembly, 41, connecting portion, 411, slot, 412, first shaft bore, 413, first lock bore, 414, rack channel, 415, receiving cavity, 42, mounting portion, 421, second shaft bore, 422, mounting through bore, 423, second lock bore, 43, pivot, 44, first lock rod, 45, second lock rod, 5, height adjustment assembly, 51, rack, 52, gear control assembly, 521, first gear assembly, 5211, first gear, 5212, 5213, third gear, 5214, fourth gear, 5215, fifth gear, 5216, sixth gear, 522, second gear assembly, 5221, seventh gear, 5222, eighth gear, 5223, ninth gear, 5224, tenth gear, 523, first knob, 524, second knob, 525, gear shaft, 526, connecting shaft, 6, pulling assembly, 61, collar, 62, first pulley, 63, second pulley, 64, third pulley, 65, fourth pulley, 66, fifth pulley, 67, drawstring, 68, pulling block, 7, indicator, 71, watch body, 72, sleeve, 73, measuring bar, 74, gauge head, 8, protector, 81.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
Fig. 1 shows an indicator verification device in an embodiment of the invention, which may be used in verification projects for indicating the repeatability of the indicator 7 and the influence of the radial stress of the measuring rod 73 on the indicating value, wherein the indicator 7 comprises a pointer type dial indicator or dial indicator, a digital display type dial indicator or dial indicator. Fig. 2 shows a pointer type indicator in the prior art, and in order to facilitate the explanation of the indicator verification device of the present invention, the indicator 7 is explained by taking the pointer type indicator as an example. As shown in fig. 2, the indicator 7 includes a gauge body 71, a shaft sleeve 72, a measuring rod 73 and a measuring head 74, the measuring head 74 and the measuring rod 73 can be integrally formed, and when the measuring rod 73 is pulled by an external force or the measuring head 74 is pressed, the two can move in a telescopic manner relative to the shaft sleeve 72, so that the indication value of the indicator 7 is changed.
As shown in fig. 1, the dial gauge calibrating apparatus includes a base 1, a semi-cylindrical side block 3 for contacting a gauge head 74 of a dial gauge 7 for calibration, a ribbed table 2 for providing a planar placement area for the semi-cylindrical side block 3, a dial gauge mounting assembly 4, and a height adjusting assembly 5.
The height adjusting component 5 is used for adjusting the height of the indicator mounting component 4 relative to the upper surface of the base 1, the height adjusting component 5 comprises a rack 51 and a gear control component 52 meshed with the rack 51, the rack 51 is arranged on one side of the base 1 in an included angle mode, and different positions of the rack 51 in the length direction are different in height relative to the upper surface of the base 1. The gear control assembly 52 is connected with the indicator mounting assembly 4, so that the indicator mounting assembly 4 is driven to synchronously move by controlling the gear control assembly 52 to move along the length direction of the rack 51, and the height of the indicator mounting assembly 4 is adjusted.
The bottom of the rack 51 may be provided with a mounting post, and is mounted on the base 1 through the mounting post. In the present embodiment, the rack 51 is vertically provided on the base 1.
The indicator mounting assembly 4 is used for mounting an indicator 7, the indicator mounting assembly 4 being arranged parallel to the base 1 such that the indicator mounting assembly 4 remains parallel to the base 1 at all times at different heights. In the present embodiment, the dial gauge mounting assembly 4 includes a connection portion 41 for connecting with the gear control assembly 52 and a mounting portion 42 for mounting the dial gauge 7. The mounting portion 42 is rotatably connected with the connecting portion 41, so as to rotate relative to the connecting portion 41 along a plane of the indicator mounting assembly 4, so that a verifier can conveniently adjust according to requirements.
As shown in fig. 7 to 8, the connecting portion 41 may be rectangular, and a slot 411 into which the mounting portion 42 is inserted is provided on a side surface of the connecting portion 41, and the mounting portion 42 is rotatably inserted into the slot 411 through a rotation structure and is clamped and fixed by the connecting portion 41. The rotating structure includes a first shaft hole 412, a second shaft hole 421 and a rotating shaft 43, where the first shaft hole 412 is disposed on a top surface of the connecting portion 41 and/or a bottom surface opposite to the top surface, and penetrates through the slot 411, the second shaft hole 421 penetrates through the top surface and the bottom surface of the mounting portion 42, and the rotating shaft 43 penetrates through the first shaft hole 412 and the second shaft hole 421, so that the mounting portion 42 is rotationally connected to the connecting portion 41.
The first shaft hole 412 and the second shaft hole 421 may be cylindrical, and the rotating shaft 43 may be a cylindrical pin shaft adapted to the first shaft hole 412 and the second shaft hole 421. In the present embodiment, the first shaft hole 412 is provided through the top and bottom surfaces of the connection portion. In other embodiments, the connection portion 41 does not need to be provided with the insertion slot 411, and the mounting portion 42 is rotatably connected to the top surface or the bottom surface of the connection portion 41 by a rotation structure.
The slot 411 may be rectangular, and the mounting portion 42 may be substantially rectangular, and an end connected to the connecting portion 41 may be arc-shaped, as shown in fig. 6, so that the mounting portion 42 may rotate 180 ° or more with respect to the connecting portion 41. It can be understood that, when the arc-shaped portion of the mounting portion 42 is inserted into the slot 411 and there is a space between the arc-shaped portion and the bottom of the slot 411 opposite to the slot opening, the mounting portion 42 can rotate by more than 180 ° relative to the connecting portion 41; when there is no space between the two, the side surface of the mounting portion 42 is attached to the bottom of the slot 411 when the mounting portion 42 is rotated 180 ° relative to the connecting portion 41, so that only 180 ° rotation can be achieved relative to the connecting portion 41. It will be appreciated that the adjustment may be made adaptively according to the insertion slot 411 and the portion of the mounting portion 42 inserted into the insertion slot 411, so that the rotation of the target angle may be achieved.
The base 1 is disposed corresponding to the mounting portion 42, in this embodiment, the size of the base 1 may be greater than or equal to the area corresponding to the mounting portion 42 after rotating within the rotatable range, where the base 1 may be disposed in a cuboid shape, or the side of the base 1 near the mounting portion 42 is disposed in an arc shape, and the arc shape may be the same as the rotation track of the mounting portion 42, so that the mounting portion 42 still corresponds to the base 1 after rotating.
In some embodiments, the base 1 may be equal to or slightly larger than the size of the indicator mounting assembly 4, and the base 1 may include a first base corresponding to the connecting portion 41 and a second base corresponding to the mounting portion 42, where the second base is rotatably connected to the first base, and a rotation angle of the second base relative to the first base may be the same as a rotation angle of the mounting portion 42 relative to the connecting portion 41, which may also enable the second base to still correspond to the base 1 after the mounting portion 42 rotates.
The dial gauge calibrating device further comprises a first locking structure for locking the mounting portion 42 on the connecting portion 41, wherein the first locking structure comprises a first locking hole 413 and a first locking rod 44, the first locking hole 413 is arranged on at least one of the top surface and the bottom surface of the connecting portion 41 and is communicated with the slot 411, so that after the position of the mounting portion 42 is determined, the first locking rod 44 is arranged in the first locking hole 413 in a penetrating manner and abuts against the mounting portion 42, and the mounting portion 42 is locked.
The first locking hole 413 is located on the side of the connecting portion 41, which is close to the slot opening of the slot 411, so that the locking effect is better. In this embodiment, the first lock rod 44 may be a screw, and the first lock hole 413 is provided with a thread adapted to the first lock rod 44, so that the mounting portion 42 can be locked and unlocked by screwing the first lock rod 44.
The mounting portion 42 is provided with a mounting through hole 422 for mounting the indicating gauge 7, the mounting through hole 422 penetrates through the top and bottom surfaces of the mounting portion 42, and the mounting through hole 422 is arranged perpendicular to the upper surface of the base 1. The mounting hole 422 is formed in a cylindrical shape, and has a diameter larger than that of the boss 72 and smaller than that of the dial 71, and the thickness of the mounting portion 42 is smaller than the length of the boss 72. As can be appreciated, when the dial gauge 7 is mounted to the mounting portion 42, the gauge head 74 and the gauge rod 73 of the dial gauge 7 pass through the mounting through hole 422, the axis of the gauge rod 73 is perpendicular to the upper surface of the base 1, and the dial gauge 7 is retained on the top surface of the mounting portion 42 by the gauge body 71 thereof.
The indicating gauge calibrating device further comprises a second locking mechanism for locking the indicating gauge 7 on the mounting portion 42, the second locking mechanism comprises a second lock hole 423 and a second lock rod 45, the second lock hole 423 is arranged on the side face of the mounting portion 42 and is communicated with the mounting through hole 422, and the second lock rod 45 is arranged in the second lock hole 423 in a penetrating manner and is abutted against the shaft sleeve 72 of the indicating gauge 7, so that the indicating gauge 7 is locked. In this embodiment, the second lock rod 45 may be a screw, and the second lock hole 423 is provided with a thread adapted to the second lock rod 45, so that locking and unlocking of the indicator 7 can be achieved by screwing the second lock rod 45.
The indicator verification device further comprises a protection member 8, as shown in fig. 12, wherein the protection member 8 is in a cylindrical shape, the diameter of the protection member is larger than the diameter of the shaft sleeve 72 and is slightly smaller than the diameter of the mounting through hole 422, and a notch 81 penetrating through two ends of the protection member 8 is arranged on the protection member. It will be appreciated that the protector 8 is adapted to be disposed in the mounting hole 422, and when the dial gauge 7 is mounted to the mounting portion 42, the sleeve 72 of the dial gauge 7 is disposed through the mounting hole 422 and is sleeved thereon by the protector 8. When the second lock lever 45 is screwed, the second lock lever 45 presses the protector 8, and the protector 8 deforms through the notch 81 thereof to wrap the sleeve 72, thereby having the effect of locking the sleeve 72 while preventing the sleeve 72 from being worn by the second lock lever 45. The protection member 8 may be made of copper.
The second locking hole 423 is disposed perpendicular to the mounting through hole 422, wherein the second locking mechanism may be provided with one or more. When one is provided, the second locking mechanism may be located at an intermediate position in the height direction of the mounting portion 42; when a plurality is provided, the plurality of second locking mechanisms may be uniformly disposed between the top and bottom of the mounting portion 42.
As shown in fig. 1, the gear control assembly 52 is engaged with the rack 51, and is used for driving the connecting portion 41 to move along the length direction of the rack 51, and the gear control assembly 52 includes a gear mechanism for engaging with the rack 51 and a driving mechanism for driving the gear mechanism to rotate. Wherein the gear mechanism is disposed in the connecting portion 41.
As shown in fig. 6, the connecting portion 41 is provided with a rack passage 414 for the rack 51 to pass through and a housing chamber 415 for housing the gear mechanism, and the rack passage 414 communicates with the housing chamber 415. It can be appreciated that the rack 51 is inserted into the connecting portion 41 through the rack channel 414, and the gear mechanism is disposed in the accommodating cavity 415 through the connecting mechanism, so as to realize connection between the gear mechanism and the connecting portion 41, and thus, the gear mechanism moves along the length direction of the rack 51, so as to drive the connecting portion 41 to move synchronously.
The gear mechanism may be implemented by one or more gears engaged, it being understood that when the gear mechanism comprises a gear, the parameters of the gear and the rack 51 may be determined by the desired gearing relationship of the gear and the rack 51, for example, the gearing relationship may be such that the gear moves a predetermined distance along the rack 51 when the gear travels one revolution. When the gear mechanism includes a plurality of gears, parameters of each gear and the rack 51 may be determined by a required transmission relationship between each gear and a transmission relationship between the gears and the rack 51, for example, when the master gear travels one turn, the slave gear connected to the rack 51 moves a predetermined distance along the rack 51. So that the elevation of the connection part 41 can be controlled by controlling the number of rotations of the main gear.
In this embodiment, to facilitate the height adjustment of the indicator gauge 7 with different ranges, the gear mechanism includes a plurality of gears, and may specifically include a first gear assembly 521 for adjusting the height with a small amount of movement and a second gear assembly 522 for adjusting the height with a large amount of movement, wherein the first gear assembly 521 and the second gear assembly 522 are disposed at different heights in the length direction of the rack 51 with a spacing distance therebetween to prevent mutual interference.
The connecting portion 41 may have a hollow structure, the rack channel 414 penetrates through the top surface and the bottom surface of the connecting portion 41 and is perpendicular to the upper surface of the base 1, the connecting portion 41 forms a receiving cavity 415 inside due to the hollow structure, and each gear in the gear assembly is connected to the inner wall of the connecting portion 41 through a gear shaft 525. It is understood that the connection mechanism may be a gear shaft 525, and the number of the gear shafts 525 may be set corresponding to the number of gears in the first gear assembly 521 and the second gear assembly 522; it will be appreciated that when two gears are to be coaxially connected, the two gears are commonly connected in the connecting portion 41 through one gear shaft 525; when the two gears are driven by the meshing connection, the two gears are each connected in the connection 41 by a gear shaft 525.
The driving mechanism may be a knob, and the driving mechanism includes a first knob 523 connected with the first gear assembly 521 in a driving manner and a second knob 524 connected with the second gear assembly 522 in a driving manner, wherein the first knob 523 and the second knob 524 are disposed outside the connecting portion 41 for rotation, and the first knob 523 and the second knob 524 may be connected with the first gear assembly 521 and the second gear assembly 522 in a driving manner through corresponding connecting shafts 526, respectively. In some embodiments, the first and second knobs 523, 524 may be coupled to gear shafts 525 on the first and second gear assemblies 521, 522, respectively, via coupling shafts 526.
As can be appreciated, by rotating the first knob 523, the first knob 523 drives the connecting shaft 526 and the gear shaft 525 to rotate, and the gear shaft 525 drives the first gear assembly 521 to synchronously rotate; the second knob 524 drives the second gear assembly 522 to rotate synchronously in the same manner.
In some embodiments, the gear shaft 525 may pass through the connection portion 41 and extend out of the connection portion 41 for connection of the first knob 523 and the second knob 524.
It should be understood that, the conventional indicator 7 includes, but is not limited to, measuring ranges of 0-1mm, 0-5mm, and 0-10mm, and in order to facilitate the height adjustment of the indicator 7 with different measuring ranges, the following description will be given by taking an example in which the first knob 523 rotates one time to make the first gear assembly 521 drive the connecting portion 41 to adjust approximately 0.6mm of movement in height, and taking the second knob 524 rotates one time to make the connecting portion 41 adjust approximately 5mm of movement in height.
As shown in connection with fig. 1, 6 and 9, the first gear assembly 521 includes a first gear 5211 having a radius of 4mm, a second gear 5212 having a radius of 16mm, a third gear 5213 having a radius of 4mm, a fourth gear 5214 having a radius of 16mm, a fifth gear 5215 having a radius of 4mm, and a sixth gear 5216 having a radius of 10 mm.
The first knob 523 is connected to the first gear 5211 in a driving manner through the connecting shaft 526 and the gear shaft 525, so that the first gear 5211 is driven to rotate synchronously under the rotation of the first knob 523, the first gear 5211 is engaged with the second gear 5212, the third gear 5213 is coaxially arranged with the second gear 5212 and the third gear 5213 is engaged with the fourth gear 5214, the fifth gear 5215 is coaxially arranged with the fourth gear 5214 and engaged with the sixth gear 5216, and the sixth gear 5216 is engaged with the rack 51. It will be appreciated that when the first knob 523 rotates one turn to rotate the first gear 5211, the first gear 5211 travels a distance of 25.12mm, and the sixth gear 5216 travels 0.628mm, about 0.6mm, due to the transmission ratio of the first gear assembly 521 being 40 times and the reduction transmission, thereby driving the mounting portion 42 to rise and fall by a height of 0.6 mm.
It can be appreciated that, to enable the first gear 5211 to be synchronously rotated when the first knob 523 is rotated, the first knob 523, the connecting shaft 526, the gear shaft 525 and the first gear 5211 may be fixedly connected or integrally structured, and the gear shaft 525 may be rotated in the connecting portion 41, so that the connecting shaft 526, the gear shaft 525 and the first gear 5211 may be synchronously rotated when the first knob 523 is rotated.
In order to realize the transmission between the two gears through the engagement connection, the rotation of the first gear 5211 will be described below as an example of driving the second gear 5212 to rotate. It is to be understood that the gear shaft 525 on the second gear 5212 can be fixedly connected to the connecting portion 41, and the second gear 5212 is disposed on the gear shaft 525 in a penetrating manner and can rotate on the gear shaft 525; so that when the first gear 5211 rotates, the second gear 5212 is driven to rotate. In some embodiments, the second gear 5212 may be fixedly connected to the gear shaft 525 thereon or be integrally formed with the gear shaft 525, and the gear shaft 525 may perform autorotation in the connecting portion 41; thus, when the first gear 5211 rotates, the second gear 5212 and the gear shaft 525 on the second gear 5212 are driven to rotate together.
It should be understood that the transmission relation in this embodiment can be realized by referring to, but not limited to, the above manner, as long as the synchronous rotation of the corresponding gears can be realized by the knob, and the gears can be realized by meshing connection, so as to finally realize the lifting adjustment of the connecting portion 41, which is common knowledge in the art and will not be described in detail herein.
As shown in connection with fig. 10, the second gear assembly 522 includes a seventh gear 5221 having a radius of 4mm, an eighth gear 5222 having a radius of 16mm, a ninth gear 5223 having a radius of 8mm, and a tenth gear 5224 having a radius of 10 mm. The second knob 524 is in transmission connection with the seventh gear 5221 through the connecting shaft 526 and the gear shaft 525, so that the seventh gear 5221 is driven to synchronously rotate under the rotation of the second knob 524, the seventh gear 5221 is meshed with the eighth gear 5222, the ninth gear 5223 is coaxially arranged with the eighth gear 5222 and meshed with the tenth gear 5224, and the tenth gear 5224 is meshed with the rack 51. It will be appreciated that when the second knob 524 is rotated one turn to rotate the seventh gear 5221 one turn, the seventh gear 5221 is moved a distance of 25.12mm, and the tenth gear 5224 is moved 5.024mm by a movement amount of about 5mm to drive the mounting portion 42 to be lifted by a height of 5mm because the transmission multiple of the second gear assembly 522 is 5 times and is a reduction transmission.
The end surfaces of the first knob 523 and the second knob 524 are provided with scales, and the side surface of the connecting portion 41 is also provided with corresponding scales so as to distinguish the number of turns of the knob.
The indicator verification device further comprises a pulling assembly 6 for pulling the measuring rod 73, and as shown in fig. 1 and 11, the pulling assembly 6 comprises a collar 61, a pulling block 68 and a pulley assembly, wherein the collar 61 is annularly arranged and is used for being sleeved on the measuring head 74 and/or the measuring rod 73 so as to drive the measuring head 74 and the measuring rod 73 to move. It will be appreciated that the code requires a spindle 73 of 8mm diameter and a probe 74 of 8mm maximum diameter, in this embodiment the collar 61 has an inner diameter less than the diameter of the probe 74, wherein the collar 61 may have an inner diameter of 6mm, so as to prevent the collar 61 from sliding up and out of the spindle 73 when the collar 61 is over the probe 74, wherein the collar 61 may be made of a stainless steel material, such as 304 stainless steel.
The pulley assembly includes a pulling pulley including one or more, and in this embodiment, includes a first pulley 62, a second pulley 63, and a third pulley 64, which are uniformly arranged in the circumferential direction of the collar 61 and are connected with the collar 61, respectively. Wherein, the collar 61 may be provided with a number of perforations corresponding to the number of pulleys, and the 3 pulleys are respectively connected to the collar 61 by the pull ropes 67. It will be appreciated that the drawstrings 67 on the 3 pulleys may be gathered and then extended, and the pull blocks 68 may be connected to the extended drawstrings 67 for lifting and lifting the collar 61 by the 3 pulleys.
In this embodiment, the pulley assembly further includes an extraction pulley, wherein the extraction pulley includes a fourth pulley 65 and a fifth pulley 66, a pull rope 67 extended from the extraction pulley is wound around the bottom of the fourth pulley 65 and then extracted from the fifth pulley 66, and a pull block 68 is connected to the end of the finally extracted pull rope 67. It will be appreciated that the fourth pulley 65 and the fifth pulley 66 may be located at the same height as the first pulley 62, the second pulley 63 and the third pulley 64, and that the fourth pulley 65 and the fifth pulley 66 are disposed in sequence away from the pulling pulley, so as to draw out the pull rope 67 and the pull block 68, preventing interference with movement of the pull rope 67 on the pulling pulley; the arrangement of the fourth pulley 65 and the fifth pulley 66 has the effect of tensioning the pulling rope 67, and prevents the pulling rope 67 from loosening and the pulling block 68 from lifting by its own weight. Wherein, the pull rope 67 can be cotton rope.
The first pulley 62, the second pulley 63, the third pulley 64, the fourth pulley 65, and the fifth pulley 66 may be disposed on the bottom surface of the mounting portion 42, and the through hole on the collar 61 is disposed corresponding to the mounting through hole 422, so that the collar 61 may be sleeved on the measuring head 74 when the indicator 7 is mounted in the mounting through hole 422. The pulleys may be attached to the mounting portion 42 by adhesion, screwing, or the like.
Wherein, the rack 51 is vertically disposed on the first side of the base 1, the connecting portion 41 is engaged with the rack 51, and the mounting portion 42 is located above the second side of the base 1, so that an area for placing the ribbed workbench 2 and the semi-cylindrical side block 3 is formed between the mounting portion 42 and the second side of the base 1 by controlling the lifting of the mounting portion 42.
As shown in fig. 1 and 3, the ribbed workbench 2 may be provided in a cylindrical shape, and one surface of the ribbed workbench is provided with a plurality of ribs 21 arranged at uniform intervals, and end surfaces of the plurality of ribs 21 are located on the same plane to form a plane. The ribbed workbench 2 is arranged on the base 1 to provide a plane placement area for the semi-cylindrical side block 3, and the bottom surface of the semi-cylindrical side block 3 is in line contact with the surface of the convex rib 21 on the ribbed workbench 2, so that the semi-cylindrical side block 3 is kept on a plane, and the flatness is good.
Wherein, the ribbed workbench 2 can be formed on the base 1 in an integrated forming manner, or the ribbed workbench 2 is arranged independently and can be connected on the base 1 through bolts. In some embodiments, the ribbed table 2 may have an arc shape, and the ribbed table 2 may have the same shape as the rotational track of the mounting portion 42, so that the ribbed table 2 may correspond to the mounting through hole 422; wherein, the ribbed workbench 2 is integrally arranged with the base 1, or the ribbed workbench 2 is independently arranged.
As shown in fig. 4 and fig. 5, the semi-cylindrical side block 3 includes a plane portion 31 and a cylindrical portion 32, where the plane portion 31 and the cylindrical portion 32 are arranged in a length direction of the semi-cylindrical side block 3, the plane portion 31 is square or rectangular, the cylindrical portion 32 is rectangular and has an equal-height cambered surface at a top, and a highest point of the cambered surface of the cylindrical portion 32 is flush with the top of the plane portion 31, that is, a height of the plane portion 31 and the cylindrical portion 32 is kept substantially consistent, so that when the same position is verified, the repeatability and a radial stress of the measuring rod 73 influence an indication value without adjusting the height when the two items are switched.
The repeatability of the dial gauge calibrating device and the operation method of the influence of the radial stress of the measuring rod 73 on the indication value are illustrated below, wherein the initial, middle and final positions of the dial gauge 7 are respectively 0mm, 2.5mm and 5mm by taking the range of the dial gauge 7 as an example.
The repeatability verification of the starting position is as follows:
s11, rotating the mounting part 42 to a required position relative to the connecting part 41, and tightening the first lock rod 44 to lock the mounting part 42;
s12, mounting the indicator 7 on the mounting part 42, enabling the measuring head 74 and the measuring rod 73 of the indicator 7 to penetrate out of the mounting through hole 422, enabling the measuring head 74 of the indicator 7 to be sleeved by the sleeve ring 61 and enabling the axis of the measuring rod 73 to be perpendicular to the upper surface of the base 1; tightening the second locking lever 45 to lock the sleeve 72;
s13, placing the ribbed workbench 2 on the base 1, placing the semi-cylindrical side block 3 on the ribbed workbench 2, and enabling the plane part 31 of the semi-cylindrical side block 3 to correspond to the measuring head 74;
s14, rotating the first knob 523 and/or the second knob 524 to adjust the height of the indicator 7 until the measuring head 74 contacts the plane part 31, wherein the indication value of the indicator 7 is 0mm;
s15, respectively pulling the pull blocks 68 to drive the measuring rod 73 to lift 5 times, recording errors of the indication values in the 5 times, and obtaining the difference between the maximum value and the minimum value in the errors of the indication values in the 5 times as the repeatability of the indication values in the initial position.
The radial stress of the spindle 73 at the initial position affects the indication value and is verified as follows:
s21, moving the semi-cylindrical side block 3 to enable the measuring head 74 to be in contact with the vicinity of the highest position of the cambered surface of the cylindrical surface part 32, wherein the indication value of the indication meter 7 is still 0mm; as can be appreciated, since the highest point of the arc surface of the pillar surface portion 32 coincides with the top surface of the plane portion 31 in height, there is no need to adjust the height of the indicating table 7;
s22, moving the semi-cylindrical side block 3 twice respectively at 4 positions in the front, back, left and right of the indicator 7 along the vertical direction of the bus of the semi-cylindrical side block 3, and recording the position indication error when the highest point of the semi-cylindrical side block 3 contacts with the measuring head 74 to generate the maximum value (turning point), wherein the difference between the maximum value and the minimum value in 8 indication errors is the influence of the radial stress of the measuring rod 73 on the indication value.
It can be seen that in the initial position, the repeatability and the radial stress of the measuring rod 73 affect the indication value, and the height of the indicator table 7 is not required to be adjusted when the items are switched.
The repeatability test steps of the intermediate position are as follows:
s31, rotating the second knob 524 for half a turn to approximately drive the indicator 7 to descend by 2.5mm, wherein the indication value of the indicator 7 is about 2.5 mm;
s32, the same step as the step S15.
The radial stress of the measuring rod 73 at the middle position has the following effect on the indication value:
s41, the same as the step S21.
S42, the same step as the step S22.
The final position reproducibility assay steps are as follows:
s51, rotating the second knob 524 for half a turn to approximately drive the indicator 7 to descend by 2.5mm, wherein the indication value of the indicator 7 is about 5 mm;
s52, the same as the step S15.
The radial stress of the measuring rod 73 at the end position has the following steps on the indication value:
s61, the same step as the step S21 is carried out.
S62, the same step as the step S22 is carried out.
It will be appreciated that the above steps are merely illustrative of the method of using the indicator gauge assay apparatus of the present invention and are not limited to being performed in the order described above during actual assay operations. The method of operation of the assay item, and the use of the associated assay device, in which repeatability and the radial stress of the spindle 73 affect the indication are common knowledge in the art, and corresponding descriptions are described in the national assay rules and are not described in detail herein.
According to the dial gauge calibrating device, the plane part 31 of the semi-cylindrical side block 3 is equal to the cylindrical part 32 in height, so that the continuous measurement of two calibration items can be realized at a certain height position of the beginning, middle and end of the dial gauge 7, the repeatability and the indication value of the radial stress of the measuring rod 73 influence, the height does not need to be adjusted to finish another calibration item after one calibration item is completely finished, the height adjustment times are reduced by half, and the working efficiency is greatly improved; through the knob that is equipped with two kinds of amount of movement of big, little, can find suitable height fast, accurately when being convenient for single adjustment, change the operation of instruction table 7 position is swift, accurate. The position of the mounting part 42 is convenient to adjust, and the position of the whole device is not required to be adjusted; the lifting of the measuring rod 73 is convenient.
It is to be understood that the above examples only represent preferred embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the invention; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several variations and modifications can be made without departing from the scope of the invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (6)
1. The utility model provides an indicator calibrating installation, is applicable to in the examination project of the repeatability of indicator (7) and the radial atress of measuring staff (73) to the registration value influence, characterized in that, indicator calibrating installation includes base (1), is used for supplying gauge head (74) of indicator (7) to contact semi-cylindrical side piece (3) in order to carry out the examination, is used for providing band work platform (2) of plane placement area for semi-cylindrical side piece (3), is used for installing indicator installation component (4) of indicator (7), and is used for adjusting indicator installation component (4) relative the altitude adjustment subassembly (5) of the upper surface of base (1);
the height adjusting assembly (5) comprises a rack (51) arranged on the base (1) at an included angle and a gear control assembly (52) in meshed connection with the rack (51), wherein the gear control assembly (52) is connected with the indicator mounting assembly (4) and is used for driving the indicator mounting assembly (4) to move along the length direction of the rack (51) so as to adjust the height;
the gear control assembly (52) comprises a gear mechanism which is used for being meshed with the rack (51) and a driving mechanism which is used for driving the gear mechanism to rotate; the gear mechanism comprises a first gear assembly (521) which is respectively connected with the racks (51) in a meshed manner and is used for adjusting the height by a small movement amount and a second gear assembly (522) which is used for adjusting the height by a large movement amount; the driving knob comprises a first knob (523) in transmission connection with the first gear assembly (521) and a second knob (524) in transmission connection with the second gear assembly (522); the first knob (523) is used for enabling the first gear assembly (521) to drive the indicator mounting assembly (4) to adjust the moving amount of 0.6mm in height after one turn, and the second knob (524) is used for enabling the second gear assembly (522) to drive the indicator mounting assembly (4) to adjust the moving amount of 5mm in height after one turn; the measuring range of the indicator (7) comprises measuring ranges of 0-1mm, 0-5mm and 0-10 mm;
the indicator meter mounting assembly (4) comprises a connecting part (41) used for being connected with the gear control assembly (52) and a mounting part (42) used for mounting the indicator meter (7), and the mounting part (42) is rotationally connected with the connecting part (41); the side surface of the connecting part (41) is provided with a slot (411) for inserting the mounting part (42), and the mounting part (42) is rotatably inserted into the slot (411) through a rotating structure;
the mounting part (42) is provided with a mounting through hole (422) for the probe (74) and the measuring rod (73) to penetrate through; the indicating meter verification device further comprises a second locking structure for locking the indicating meter (7) on the mounting part (42), wherein the second locking structure comprises a second lock hole (423) which is arranged on the mounting part (42) and is communicated with the mounting through hole (422), and a second lock rod (45) which is arranged in the second lock hole (423) in a penetrating way and is used for being abutted with the indicating meter (7) so as to lock the indicating meter (7);
the indicator verification device further comprises a protection piece (8) for preventing the shaft sleeve (72) of the indicator (7) from being worn, wherein the protection piece (8) is arranged in the mounting through hole (422) and is used for wrapping the shaft sleeve (72); the protection piece (8) is arranged in a cylindrical shape and is provided with a notch (81) penetrating through two ends of the protection piece;
the indicator verification device further comprises a lifting assembly (6) for lifting the measuring rod (73), wherein the lifting assembly (6) comprises a sleeve ring (61) which is sleeved on the measuring head (74) and/or the measuring rod (73) to drive the measuring rod (73) and the measuring head (74) to move, a pull block (68) for lifting, and a pulley assembly connected with the pull block (68) and the sleeve ring (61), and the pulley assembly is used for driving the sleeve ring (61) to move along the axial direction of the measuring rod (73) according to the movement of the pull block (68);
the diameter of the measuring rod (73) is 8mm, the maximum diameter of the measuring head (74) is a conical head of 8mm, and the inner diameter of the sleeve ring (61) is 6mm;
the pulley assembly includes a pulling pulley including three pulleys uniformly arranged in a circumferential direction of the collar (61) and respectively connected with the collar (61); the sleeve ring (61) is correspondingly provided with perforations for three pulleys to be connected to the sleeve ring (61) in a penetrating way through the pull ropes (67);
the semi-cylindrical side block (3) comprises a plane part (31) and a cylindrical surface part (32), wherein the highest point of the cylindrical surface part (32) is flush with the top of the plane part (31).
2. The indicator verification device according to claim 1, wherein the indicator mounting assembly (4) is arranged parallel to the base (1); the mounting part (42) rotates relative to the connecting part (41) along the plane of the indicator mounting assembly (4).
3. The indicator verification device according to claim 1, wherein the rotation structure comprises a first shaft hole (412) disposed on the connection portion (41) and penetrating the slot (411), a second shaft hole (421) penetrating the mounting portion (42), and a rotation shaft (43) penetrating the first shaft hole (412) and the second shaft hole (421) to connect the connection portion (41) and the mounting portion (42).
4. A dial gauge calibrating apparatus according to claim 3, further comprising a first locking structure for locking the mounting part (42) on the connecting part (41), the first locking structure comprising a first locking hole (413) provided on the connecting part (41) and communicating with the slot (411) and a first locking rod (44) penetrating in the first locking hole (413) for abutting against the mounting part (42) to lock the mounting part (42).
5. The dial gauge calibrating apparatus according to claim 1, wherein the connecting portion (41) is provided with a rack channel (414) for the rack (51) to pass through and a receiving cavity (415) for receiving the gear mechanism, the receiving cavity (415) being in communication with the rack channel (414); the gear mechanism is arranged in the accommodating cavity (415) through a gear shaft (525), and the control knob is arranged outside the connecting part (41) and is in transmission connection with the gear mechanism.
6. The indicator verification device according to claim 1, wherein the rack (51) is arranged perpendicular to the base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110968281.XA CN113739834B (en) | 2021-08-23 | 2021-08-23 | Indicating meter calibrating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110968281.XA CN113739834B (en) | 2021-08-23 | 2021-08-23 | Indicating meter calibrating device |
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| CN113739834A CN113739834A (en) | 2021-12-03 |
| CN113739834B true CN113739834B (en) | 2023-07-14 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2110371B (en) * | 1981-08-10 | 1985-01-30 | Mitutoyo Mfg Co Ltd | Height gauge |
| TWI351576B (en) * | 2007-08-09 | 2011-11-01 | Benq Corp | Height adjustment device with fine tuning of an im |
| CN208235487U (en) * | 2018-04-18 | 2018-12-14 | 广东有色工程勘察设计院 | A kind of monitoring mark for pit retaining monitoring |
| CN208418443U (en) * | 2018-05-15 | 2019-01-22 | 刘烨 | A kind of energy-saving LED road lamp bracket of adjustable up-down |
| CN209783474U (en) * | 2019-06-03 | 2019-12-13 | 上海东培企业有限公司 | Adjustable height measuring device |
| CN210512985U (en) * | 2019-09-05 | 2020-05-12 | 陕西亿联中科智能科技有限公司 | Measuring device is used in heating panel production |
| CN211576232U (en) * | 2020-04-22 | 2020-09-25 | 台州市计量设备技术校准中心 | Standard device of grating type indicating meter calibrating instrument |
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