CN100484708C - Positioning accuracy quick measuring mechanism of numerically controlled revolving dial - Google Patents
Positioning accuracy quick measuring mechanism of numerically controlled revolving dial Download PDFInfo
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- CN100484708C CN100484708C CNB2007100493988A CN200710049398A CN100484708C CN 100484708 C CN100484708 C CN 100484708C CN B2007100493988 A CNB2007100493988 A CN B2007100493988A CN 200710049398 A CN200710049398 A CN 200710049398A CN 100484708 C CN100484708 C CN 100484708C
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Abstract
The present invention is fast measuring mechanism for the location precision of numerically controlled rotary table in numerically controlled machine tool. The fast measuring mechanism includes one main shaft connected to the bottom plate and located in the central hole of the numerically controlled rotary table, one circular grating with scale ring connected to the main shaft, one circular grating seat connected to the axle sleeve, one first connecting board connected to the circular grating seat and one bare shaft, one first connected board to a cartridge, and two pen type length gauges connected separately to the first and the second connecting board.
Description
Technical field:
The present invention is relevant with the measurement mechanism of the NC rotary table positioning accuracy of Digit Control Machine Tool.
Background technology:
The measurement of the NC rotary table positioning accuracy of Digit Control Machine Tool is to bother very much with time-consuming, and the precision of its measurement is also not high.Improving measuring speed and certainty of measurement has become the difficult problem of metrological personnel.
The traditional measurement method of NC rotary table is with polygon and photoelectric auto-collimator, is illustrated in fig. 17 shown below.Polygon is installed on the centre of gyration of NC rotary table, rotates synchronously with workbench; Photoelectric auto-collimator must be installed firm, and collimator electronic box and collimating light pipe power supply and photoelectric auto-collimator connect, and after the energising preheating, adjusts the photoelectric auto-collimator base, makes the autocollimator optical axis contour and vertical with the center of the face of polygon.When measuring beginning, NC rotary table rotates to datum mark to be stopped, survey crew at first needs to forward the reading drum to " 0 ", adjust polygon repeatedly, after making reflection cross hairs image be positioned at the eyepiece field of view center, finely tune the reading drum again, make collimator electronic box pointer refer to " 0 ", the reading of record reading drum at this moment; Then, NC rotary table revolution polygon two adjacent surface angles, fine setting reading drum, make reflection cross hairs image be positioned at the eyepiece field of view center after, finely tune the reading drum again, make collimator electronic box pointer refer to " 0 ", the reading of record reading drum this moment; NC rotary table turns round polygon two adjacent surface angles again, repeats task, writes down the reading of this reading drum; Repeat task again, get back to beginning detection faces position until polygon.After gyratory directions measurement of NC rotary table was finished, the reversed turning NC rotary table was measured again, began to measure the face position until what get back to polygon once more.At last, carry out data and handle, obtain the positioning accuracy deviation data that NC rotary table just changes, reverses.
No matter be that forward or reverse is measured, return beginning face from the beginning face of polygon, twice reading value should be identical in theory, but this is difficult to.Because the slight impact the when variation of the vibrations of measurement environment, the variations in flow of measurement environment, instrumental sensitivity, the drift of collimator electronic box and fine setting reading drum all can make reading change.Yet, from initial measurement face, returning initial measurement face by planar survey, the difference of twice reading must be in allowed band; When the difference of twice reading value surpassed permissible value, measurement data was invalid, must be from new measurement, till reaching requirement; To high-precision rotary working-table,, also use the mean value of three measurements sometimes and make the measurement result data for improving certainty of measurement.With instrument shown in Figure 17 the NC rotary table positioning accuracy is measured, to obtaining the measurement result data, different survey crews is because it is different with experience to measure the qualification of operation from the Installation and Debugging of instrument, the used time also is different, and has contingency; This quasi-instrument owing to mostly adopt drum, accurate screw mandrel micrometer reading, is limited by machining accuracy, and collimator electronic box and photoelectric auto-collimator is stable limited in addition, and certainty of measurement is restricted.
The reading drum mechanism of photoelectric auto-collimator among Figure 17 is used the grating reading system,, can not improve measuring speed and certainty of measurement though can improve resolution ratio.
With laser small angle measurement systematic survey NC rotary table positioning accuracy, certainty of measurement height, but measuring speed is still slow, can not kinetic measurement.
With digital display autocollimator and polygon the NC rotary table positioning accuracy is measured, can be improved certainty of measurement, but require the air-flow of measurement environment little with vibrations, measuring speed is still slow, can not kinetic measurement.
Summary of the invention:
It is fast to the purpose of this invention is to provide a kind of measuring speed, but kinetic measurement, the positioning accuracy quick measuring mechanism of numerically controlled revolving dial that certainty of measurement is high.
The present invention is achieved like this:
Positioning accuracy quick measuring mechanism of numerically controlled revolving dial of the present invention, main shaft 10 is connected with base plate 1, main shaft 10 is positioned in the hole at NC rotary table center by positioner, main shaft 10 is connected with circle grating line ring, circle grating seat and axle sleeve and first connecting plate 15 are connected, first connecting plate 15 is connected with optical axis 14, second connecting plate 17 is connected with chuck 20, two pen type length gauges 32 are connected with first or second connecting plate, its axis becomes 90 ° of angles by the centre of gyration of main shaft 10, the axis of a pen type length gauge and the axis of optical axis are in same vertical guide, the gauge head of pen type length gauge closely contacts with the internal face M of the gage button that second connecting plate or first connecting plate are connected, and optical axis is between two needle rollers of second connecting plate 17 or straight pin 49 and gapped with it.
The circle grating is made up of two read heads 71 and groove ring 70, two read heads 71 are connected with seat 69, seat 69 is connected with axle sleeve 59, the axle sleeve 59 and first connecting plate 15 are connected, main shaft 10 is connected with ring 58, ring 58 is connected with groove ring 70, separation sleeve 62, steel ball cage ring 57, packing ring 56, adjustable packing ring 63 are arranged between main shaft 10 and the axle sleeve 59, steel ball 55 and fixing by pressing plate 64 is arranged on separation sleeve 62 and the cage ring 57, adjusting seat 72 is connected by screw 73 and axle sleeve 59, adjusting on the seat has expansion screw 74, adjusts seat 72 and is connected with seat 69 by the expansion screw 74 on it.
The periphery J of positioning sleeve 31 and the inner hole surface H of main shaft 10 are interference fits, with the inner hole surface I of base plate 1 be matched in clearance, the periphery Q of locating pin 32 and the inner hole surface P of positioning sleeve 31 are matched in clearance, and the inner hole surface K at the periphery S of locating pin 32 and NC rotary table 33 centers is a matched in clearance.
First connecting plate 15 and two back-up blocks 13 are connected, optical axis 14 clamps between two back-up blocks 13 and with screw 38, two pen type length gauges 37 are connected with first connecting plate 15, permanent magnet 48 and shifting block 46 bondings, shifting block 46 and two needle rollers or straight pin 49 are connected, the shifting block 46 and second connecting plate 17 are connected, and optical axis 14 is also gapped between two needle rollers or straight pin 49.
First connecting plate 15 and two back-up blocks 13 are connected, optical axis 14 clamps between two back-up blocks 13 and with screw 38, the gage button 50 and first connecting plate 15 are connected, two pen type length gauges 37 are connected with second connecting plate 17, permanent magnet 48 and shifting block 46 bondings, shifting block 46 and two needle rollers or straight pin 49 are connected, and the shifting block 46 and second connecting plate 17 are connected, and optical axis 14 is also gapped between two needle rollers or straight pin 49.
The present invention is with circle grating angular surveying reference element, to the NC rotary table positioning accuracy carry out dynamically, rapid static surveying.The mechanical mechanism of measuring system mainly is made up of angular surveying and setting-up eccentricity measurement two parts, and angular surveying has two kinds of structures, and setting-up eccentricity is measured also two kinds of structures, and this has just formed four kinds of measuring mechanisms.Adopt four kinds of measuring mechanisms, can be dynamically, the positioning accuracy of rapid static surveying NC rotary table, take measurement of an angle (or measure and count) can be set arbitrarily, and measuring speed is fast, and stability of display is good, and the certainty of measurement height is not subjected to factor affecting such as survey crew.
Description of drawings:
Fig. 1 is one of structure chart of the present invention.
Fig. 2 is E-E cutaway view of Fig. 1.
Fig. 3 is that the A of Fig. 1 is to partial view.
Fig. 4 is that the W of Fig. 3 is to partial view.
Fig. 5 is C-C partial sectional view of Fig. 1.
Fig. 6 is D-D partial sectional view of Fig. 1.
Fig. 7 is two of a structure chart of the present invention.
Fig. 8 is E-E cutaway view of Fig. 7.
Fig. 9 is D-D partial sectional view of Fig. 7.
Figure 10 is three of a structure chart of the present invention.
Figure 11 is E-E cutaway view of Figure 10.
Figure 12 is that the B of Figure 11 is to partial view.
Figure 13 goes the N of base plate 1 to partial view for Figure 10.
Figure 14 is U-U cutaway view of Figure 13.
Figure 15 is four of a structure chart of the present invention.
Figure 16 is E-E cutaway view of Figure 15.
Figure 17 is existing measuring mechanism schematic diagram.
The specific embodiment:
Embodiment 1:
Round grating with band built-in bearing and stator shaft coupling is made the angular surveying reference element, and the misalignment measurement length gauge moves by offset, as Fig. 1, and 2,3,4,5, shown in 6.
Angular surveying is by base plate 1, axillare 4, gripper shoe 6, connecting ring 8, main shaft 10, positioning sleeve 31, locating pin 32 and circle grating 9, thrust ball bearing 29 compositions such as grade.Circle grating 9 usefulness screws 7 tighten together with gripper shoe 6, connecting ring 8 usefulness screws 27 tighten together with gripper shoe 6, the main shaft 10 usefulness collar nuts 11 and the first circle grating 9 are connected, the part of thrust ball bearing 29 is packed on the shaft shoulder of main shaft 10, again axillare 4 is contained on the main shaft 10, and axillare 4 and gripper shoe 6 are connected with screw 5, the part of thrust ball bearing 29 is contained on the main shaft 10, positioning sleeve 31 is pressed in the main shaft 10, with screw 30 base plate 1 and main shaft 10 are reinforced, this has just formed the angular surveying part.Locating pin 32 is used as the location of instrument on workbench 33 when measuring according to the hole dimension manufacturing at NC rotary table center.
Misalignment measurement is by back-up block 13, optical axis 14, the first connecting plates 15, the second connecting plates 17, connecting rod 19, limited post 22, locating pin 24, bearing 36, shifting block 46 and pen type length gauge 37, permanent magnet 48, compositions such as needle roller or quenching straight pin 49.First connecting plate, 15 usefulness screws 25 are fastening with connecting ring 8, after putting into optical axis 14 in two back-up blocks 13, with screw 12 itself and first connecting plate 15 are reinforced, with screw 38 optical axis 14 is clamped in two back-up blocks 13 respectively again, limited post 22 usefulness screws 21 are fastened on first connecting plate 15, after steel ball 23 cements with locating pin 24, be screwed into it in first connecting plate 15 and reinforce, with screw 35 bearing 36 is reinforced after on first connecting plate 15, again two screws 34 of two pen type length gauges, 37 usefulness are fastened in the bearing 36; Be pressed into two needle rollers or quenching straight pin 49 in the shifting block 46, after permanent magnet 48 is cemented on the shifting block 46, the shifting block 46 usefulness screws 47 and second connecting plate 17 are reinforced, the connecting rod 19 usefulness screws 18 and second connecting plate 17 are reinforced, second connecting plate 17 that installs shifting block 46 and connecting rod 19 is placed on first connecting plate 15 and by three locking balls, 23 location, at this moment, optical axis 14 should just in time be between two needle rollers 49 on the shifting block 46, the gauge head of two pen type length gauges 37 closely contacts with the inner hole surface M of second connecting plate 17, and this has just formed the misalignment measurement part.
For attached cable, with screw 41 cable block 40 is fastened on the periphery at cable outlet place of connecting ring 8, the cable of circle grating 9 from cable block 40 along going out, the cable of two pen type length gauges 37 goes out behind cable block 40 from the Kong Shun of first connecting plate 15, and end cap 39 usefulness screws 41 and cable block 40 are fastening and push down the cable of the first circle grating 9 and pen type length gauge 37.Arrive this, measuring mechanism is promptly formed.
For protecting instrument and preventing that dust from entering thrust ball bearing 29, the protective cover 16 usefulness screws 26 and first connecting plate 15 are reinforced, and guard shield 3 usefulness screws 2 are reinforced on base plate 1, are stained with felt collar 28 again on guard shield 3; For ease of the installation of instrument and move, after bearing 42 usefulness screws 44 were reinforced with connecting ring 8, handle 43 usefulness screws 45 and bearing 42 were reinforced.
Points for attention: the round grating 9 of this embodiment is round gratings of band built-in bearing and stator shaft coupling, and the mechanical precision of main shaft 10 and circle grating 9 coupling parts must meet the requirement of round grating 9; During assembling, when thrust ball bearing 29 closely contacted with the shaft shoulder L of main shaft 10, the lower surface F of gripper shoe 6 must be same plane with all plane, place, steel ball lower surface G of thrust ball bearing 29; The periphery J of positioning sleeve 31 and the inner hole surface H of main shaft 10 be interference fits, with the inner hole surface I of base plate 1 be matched in clearance, the periphery Q of locating pin 32 and the inner hole surface P of positioning sleeve 31 are matched in clearance, and the inner hole surface K at the periphery S of locating pin 32 and NC rotary table 33 centers is a matched in clearance; The axis of two pen type length gauges 37 should be by main shaft 10 the centre of gyration, axis should be vertical mutually, and the axis of a pen type length gauge 37 should with the axis of optical axis 14 in same vertical guide; Optical axis 14 is between two needle rollers 49, must be gapped; Cross the inhomogeneous impact that produces of work table rotation in large impact and the measuring process when avoiding NC rotary table to start, it is very important cementing two blocks of permanent magnets 48 on shifting block 46.
The quick measurement of NC rotary table positioning accuracy is achieved in that
(1). kinetic measurement: locating pin 32 is put into the endoporus at NC rotary table 33 centers, measuring mechanism is placed on the table top of NC rotary table, measuring mechanism is positioned on the table top of rotary table with the inner hole surface P of positioning sleeve 31 and the periphery Q of locating pin 32; Behind chuck 20 declines and the clamping connecting rod 19, the chuck 20 that rises again breaks away from the steel ball 23 and second connecting plate 17 on the locating pin 24.The driven by servomotor workbench rotation of NC rotary table, when workbench goes to the datum mark of NC rotary table, from datum mark, the servomotor encoder rotates the sampling number of a complete cycle according to the NC rotary table of computer installation, send signal by the equal angles spacing, computer is sampled simultaneously to the signal of circle grating 9 and two pen type length gauges 37, till NC rotary table is got back to datum mark; Computer according to adopt data, handle automatically, thereby obtain NC rotary table, the positioning accuracy of corresponding angle, and show measurement result and error curve from datum mark.The servomotor of NC rotary table drives the workbench counter-rotating again, NC rotary table is from datum mark when measuring counter-rotating, the positioning accuracy of corresponding angle, and when showing counter-rotating NC rotary table from datum mark, the measurement result of corresponding angle positioning accuracy and error curve.At last, as required, computer output measurement result.
(2). static measurement: locating pin 32 is put into the endoporus at NC rotary table 33 centers, measuring mechanism is placed on the table top of NC rotary table, measuring mechanism is positioned on the table top of rotary table with the inner hole surface P of positioning sleeve 31 and the periphery Q of locating pin 32; Behind chuck 20 declines and the clamping connecting rod 19, the chuck 20 that rises again breaks away from the steel ball 23 and second connecting plate 17 on the locating pin 24.The driven by servomotor workbench rotation of NC rotary table, when workbench goes to the datum mark of NC rotary table, from datum mark, servomotor rotates the sampling number of a complete cycle according to the NC rotary table of computer installation, stop after rotating an equal angles spacing, manual or computer is sampled simultaneously to the signal of circle grating 9 and two pen type length gauges 37 automatically; Afterwards, servomotor drives and stops after workbench rotates an equal angles spacing again, and manual or computer is sampled simultaneously to the signal of circle grating 9 and two pen type length gauges 37 automatically; Circulation successively is till workbench is got back to datum mark; Computer according to adopt data, handle automatically, thereby obtain NC rotary table, the positioning accuracy of corresponding angle, and show measurement result and error curve from datum mark.The servomotor of NC rotary table drives the workbench counter-rotating again, NC rotary table is from datum mark when measuring counter-rotating, the positioning accuracy of corresponding angle, and when showing counter-rotating NC rotary table from datum mark, the measurement result of corresponding angle positioning accuracy and error curve.At last, as required, computer output measurement result.
Embodiment 2:
The first circle grating with band built-in bearing and stator shaft coupling is made the angular surveying reference element, and the misalignment measurement length gauge maintains static, as Fig. 3, and 4,5,7,8, shown in 9.
Angular surveying is still by base plate 1, axillare 4, and gripper shoe 6, connecting ring 8, main shaft 10, positioning sleeve 31, locating pin 32 and circle grating 9, thrust ball bearing 29 compositions such as grade, its connection and assembly method and embodiment 1 are just the same.
Misalignment measurement is by back-up block 13, optical axis 14, the first connecting plates 15, the second connecting plates 17, connecting rod 19, limited post 22, locating pin 24, bearing 36, shifting block 46, gage button 50 and pen type length gauge 37, permanent magnet 48, compositions such as needle roller or quenching straight pin 49.First connecting plate, 15 usefulness screws 25 are fastening with connecting ring 8, after putting into optical axis 14 in two back-up blocks 13, with screw 12 itself and first connecting plate 15 are reinforced, with screw 38 optical axis 14 is clamped in two back-up blocks 13 respectively again, limited post 22 usefulness screws 21 are fastened on first connecting plate 15, after steel ball 23 cements with locating pin 24, be screwed into it in first connecting plate 15 and reinforce, two gage buttons 50 are fastened on first connecting plate 15 with screw 51; With screw 35 bearing 36 is reinforced after on second connecting plate 17, again two screws 34 of two pen type length gauges, 37 usefulness are fastened in the bearing 36, be pressed into two needle rollers or quenching straight pin 49 in the shifting block 46, after permanent magnet 48 is cemented on the shifting block 46, the shifting block 46 usefulness screws 47 and second connecting plate 17 are reinforced, the connecting rod 19 usefulness screws 18 and second connecting plate 17 are reinforced, again second connecting plate 17 is placed on first connecting plate 15 and and locatees by three locking balls 23, at this moment, optical axis 14 should just in time be between two needle rollers 49 on the shifting block 46, the gauge head of two pen type length gauges 37 closely contacts with the M face of gage button 50, and this has just formed the misalignment measurement part.
Cable along going out and fix, the protection of instrument, the handle installation of instrument is all just the same with embodiment 1.
Points for attention and embodiment 1 are just the same.
Realize the NC rotary table positioning accuracy dynamically, the rapid static surveying method is also just the same with embodiment 1.
Embodiment 3:
Make the angular surveying reference element with RESR circle grating, the misalignment measurement length gauge moves by offset, as Fig. 5, and 6,10,11,12, shown in 13,14.
Angular surveying is by base plate 1, main shaft 10, the first connecting plates 15, positioning sleeve 31, locating pin 32, packing ring 56, steel ball separation sleeve 57, ring 58, axle sleeve 59, separation sleeve 62, adjustable packing ring 63, pressing plate 64, seat 69 is adjusted seat 72 and steel ball 55, compositions such as circle grating line ring 70 and read head 71.By main shaft 10, packing ring 56, steel ball cage ring 57, axle sleeve 59, separation sleeve 62, adjustable packing ring 63, pressing plate 64 and steel ball 55, screw 65 constitute the axis of rolling system that the magnitude of interference axially and is radially all arranged; The axle sleeve 59 usefulness screws 66 and first connecting plate 15 are reinforced, ring 58 is fastening with it on the main shaft 10 of axis of rolling system with screw 68, circle grating line ring 70 usefulness screws 67 are fastened on the ring 58, after two read heads, 71 usefulness screws 76 and seat 69 are fastening, again seat 69 usefulness screws 75 are tightened together with axle sleeve 59, adjusting seat 72 usefulness screws 73 tightens together with axle sleeve 59, adjust on the seat 72 expansion screw 74 is arranged, be used to adjust the phase place of two read heads, circle grating line ring 70 and two read heads 71 are by its specification requirement adjustment and fix; Positioning sleeve 31 is pressed into the endoporus of main shaft 10, and base plate 1 usefulness screw 54 is reinforced with main shaft 10, and this has just formed the angular surveying part.Locating pin 32 is according to the hole dimension manufacturing at NC rotary table center, and instrument is in the location of workbench during as measurement.
Misalignment measurement is still by back-up block 13, optical axis 14, the first connecting plates 15, the second connecting plates 17, connecting rod 19, limited post 22, locating pin 24, bearing 36, shifting block 46 and pen type length gauge 37, permanent magnet 48, compositions such as needle roller or quenching straight pin 49, its connection and assembly method and embodiment 1 are just the same.
Cable along going out and fix, the protection of instrument, the handle installation of instrument is all just the same with embodiment 1.
Points for attention: the axis of rolling is to make by the high accuracy dense ball bearing shafting, but the magnitude of interference axial and radially needs smaller; This embodiment 3 usefulness RESR circle grating is made the angular surveying reference element, and the basic precision that circle grating line ring 70 and read head 71 are installed must satisfy its requirement, and will justify optical-mechanical system by its requirement and be adjusted to full accuracy; The periphery J of positioning sleeve 31 and the inner hole surface H of main shaft 10 are interference fits, the periphery J of positioning sleeve 31 and the inner hole surface I of base plate 1 are matched in clearance, the periphery Q of locating pin 32 and the inner hole surface P of positioning sleeve 31 are matched in clearance, and the periphery S of locating pin 32 is a matched in clearance with the cooperating of inner hole surface K at NC rotary table 33 centers; The axis of two pen type length gauges 37 should be by main shaft 10 the centre of gyration, axis should be vertical mutually, and the axis of a pen type length gauge 37 should with the axis of optical axis 14 in same vertical guide; Optical axis 14 is between two needle rollers 49 and must be gapped, crosses the inhomogeneous impact that produces of work table rotation in large impact and the measuring process when avoiding NC rotary table to start, and it is very important cementing two blocks of permanent magnets 48 on shifting block 46.
Realize the NC rotary table positioning accuracy dynamically, rapid static surveying method and embodiment 1 be just the same.
Embodiment 4:
Make the angular surveying reference element with RESR circle grating, the misalignment measurement length gauge maintains static, as Fig. 5, and 9,12,13,14, shown in 15,16.
Angular surveying is still by base plate 1, main shaft 10, the first connecting plates 15, positioning sleeve 31, locating pin 32, packing ring 56, steel ball separation sleeve 57, ring 58, axle sleeve 59, separation sleeve 62 is adjusted packing ring 63, pressing plate 64, seat 69, adjust seat 72 and steel ball 55, compositions such as circle grating line ring 70 and read head 71, its connection and assembly method and embodiment 3 are just the same.
Misalignment measurement is still by back-up block 13, optical axis 14, the first connecting plates 15, second connecting plate 17, connecting rod 19, limited post 22, locating pin 24, bearing 36, shifting block 46, gage button 50 and pen type length gauge 37, permanent magnet 48, compositions such as needle roller or quenching straight pin 49, its connection and assembly method and embodiment 2 are just the same.
Cable along going out and fix, the protection of instrument, the handle installation of instrument is all just the same with embodiment 1.
Points for attention and embodiment 3 are just the same.
Realize the NC rotary table positioning accuracy dynamically, rapid static surveying method and embodiment 1 be just the same.
As required, computer can still be anticipated the sampling number that NC rotary table turns round a complete cycle is set, and the positioning accuracy of NC rotary table is measured, and needing to obtain the positioning accuracy data.Still meaning measurement can be set in one complete cycle count, be that other measuring method is irrealizable.
Claims (6)
1, positioning accuracy quick measuring mechanism of numerically controlled revolving dial, it is characterized in that main shaft (10) and base plate (1) are connected, by positioner main shaft (10) is positioned in the hole at NC rotary table center, main shaft (10) is connected with circle grating line ring, circle grating seat and axle sleeve and first connecting plate (15) are connected, first connecting plate (15) is connected with optical axis (14), second connecting plate (17) is connected with chuck (20), two pen type length gauges (32) are connected with first or second connecting plate, its axis becomes 90 ° of angles by the centre of gyration of main shaft (10), the axis of a pen type length gauge and the axis of optical axis are in same vertical guide, the gauge head of two pen type length gauges closely contacts with the internal face (M) of the gage button that second connecting plate or first connecting plate are connected, and optical axis is positioned between two needle rollers of second connecting plate (17) or the straight pin (49) and is gapped with two needle rollers or straight pin.
2, measuring mechanism according to claim 1, it is characterized in that circle grating (9) and gripper shoe (6) are connected, gripper shoe (6) is connected with connecting ring (8), connecting ring (8) is connected with first connecting plate (15), the groove ring of circle grating (9) is connected with main shaft (10) by collar nut (11), first thrust ball bearing (29) is contained on the shaft shoulder of main shaft (10), second thrust ball bearing is contained on the base plate (1), said axle sleeve is the axillare (4) between first, second thrust ball bearing, and axillare (4) is connected with gripper shoe (6).
3, measuring mechanism according to claim 1, it is characterized in that justifying grating is made up of two read heads (71) and groove ring (70), two read heads (71) are connected with circle grating seat (69), circle grating seat (69) is connected with axle sleeve (59), axle sleeve (59) is connected with first connecting plate (15), main shaft (10) is connected with ring (58), ring (58) is connected with groove ring (70), between main shaft (10) and the axle sleeve (59) separation sleeve (62) is arranged, steel ball cage ring (57), packing ring (56), adjustable packing ring (63), steel ball (55) and fixing by pressing plate (64) is arranged on separation sleeve (62) and the cage ring (57), adjusting seat (72) is connected by screw (73) and axle sleeve (59), adjusting on the seat has expansion screw (74), adjusts seat (72) and is connected with circle grating seat (69) by the expansion screw (74) on it.
4, measuring mechanism according to claim 1, it is characterized in that the periphery J of positioning sleeve (31) and the inner hole surface H of main shaft (10) are interference fits, with the inner hole surface I of base plate (1) be matched in clearance, the inner hole surface P of the periphery Q of locating pin (32) and positioning sleeve (31) is a matched in clearance, and the inner hole surface K at the periphery S of locating pin (32) and NC rotary table (33) center is a matched in clearance.
5, measuring mechanism according to claim 1, it is characterized in that first connecting plate (15) and two back-up blocks (13) are connected, optical axis (14) is positioned between two back-up blocks (13) and with screw (38) and clamps, two pen type length gauges (37) are connected with first connecting plate (15), permanent magnet (48) and shifting block (46) bonding, shifting block (46) is connected with two needle rollers or straight pin (49), shifting block (46) is connected with second connecting plate (17), and optical axis (14) is positioned between two needle rollers or the straight pin (49) also gapped.
6, measuring mechanism according to claim 1, it is characterized in that first connecting plate (15) and two back-up blocks (13) are connected, optical axis (14) is positioned between two back-up blocks (13) and with screw (38) and clamps, gage button (50) is connected with first connecting plate (15), two pen type length gauges (37) are connected with second connecting plate (17), permanent magnet (48) and shifting block (46) bonding, shifting block (46) is connected with two needle rollers or straight pin (49), shifting block (46) is connected with second connecting plate (17), and optical axis (14) is positioned between two needle rollers or the straight pin (49) also gapped.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100493988A CN100484708C (en) | 2007-06-29 | 2007-06-29 | Positioning accuracy quick measuring mechanism of numerically controlled revolving dial |
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| CNB2007100493988A CN100484708C (en) | 2007-06-29 | 2007-06-29 | Positioning accuracy quick measuring mechanism of numerically controlled revolving dial |
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| CN100484708C true CN100484708C (en) | 2009-05-06 |
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|---|---|---|---|---|
| CN102059589A (en) * | 2010-10-21 | 2011-05-18 | 大连理工大学 | Device and method for detecting inclination angle error of laser displacement sensor |
| CN102059589B (en) * | 2010-10-21 | 2013-04-17 | 大连理工大学 | Device and method for detecting inclination angle error of laser displacement sensor |
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| CN101081482A (en) | 2007-12-05 |
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