CN2042946U

CN2042946U - Coaxality admeasuring apparatus

Info

Publication number: CN2042946U
Application number: CN 88217409
Authority: CN
Inventors: 徐浩然
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-08-05
Filing date: 1988-08-05
Publication date: 1989-08-16

Abstract

The utility model relates to an instrument for detecting the error of the coaxiality, belonging to the metering detection device. A coaxiality measuring instrument is designed for solving the problems of the poor eccentric-load ability and the harsh using condition of the English Taylorhoff roundness measuring instrument. The coaxiality measuring instrument is that only a dense steel-ball bearing is used as the radial positioning of a main shaft; a dense steel-ball thrust bearing between a machine base and the corresponding annular end surface of a working bench is used as the axial positioning of the main shaft and the working bench; the horizontal center line of the thrust-bearing steel ball of the dense steel ball halves the axial distance of a radial dense bearing; a corrugated pipe device is arranged in a shaft driving element. Thus, the detecting work can be continuously carried out on the production field, and bigger eccentric load can be born.

Description

Coaxality admeasuring apparatus

The utility model relates to the instrument that a kind of morpheme error to measurement disk cover class and small box body class part is carried out detection by quantitative, belongs to metering and measuring equipment.

The rotary table of Britain Taylor Hough roundness measuring equipment is very accurate, main axle structure is done the warp-wise location for adopting the second gear journal bearing, steel ball with high precision of device is made axial location in the taper hole of main shaft lower end, the eccentrically loaded ability of carrying of this high precision main axle structure worktable is relatively poor, involve great expense, and the environmental baseline used (temperature, shockproof, anti-ly driedly scratch, access times) there is higher requirement and places restrictions on, only be suitable for metering, scientific research department's use, to on-the-spot frequent this kind roundness measuring equipment that uses of workshop, under the present condition of China, still unrealistic.

Roundness measuring equipment is the calibrating to shape error, and right alignment belongs to site error, and site error uses the higher roundness measuring equipment of precision just very economical in the on-the-spot detection of workshop than the low order of magnitude of shape error.

The purpose of this utility model is to make a kind of multifunctional quantitatively detecting instrument that the workshop scene can be detected morpheme errors such as coaxiality error, the error of perpendicularity, deviation from circular froms continuously that is suitable for.

The utility model is realized by following measure:

1, the warp-wise alignment bearing with main shaft changes one grade into by second gear, and employing steel ball axial distance is 20～40 millimeters an intensive steel ball bearing.

2, to the axial location of main shaft and worktable, give up the positioning form that a steel ball is installed in the main shaft lower end, substitute with the intensive steel ball thrust bearing of major diameter, and make the horizontal center line of thrust bearing steel ball vertically divide the radially axial distance of intensive bearing equally.(promptly going up most and the most following two distances of arranging between the steel balls)

3, gear train is connected by corrugated tube with main shaft.

The utility model is made up of adjustable bed (9), rotary table (12), 2 cover dial gauges (5,7), optical pulse generator (14) and microsystem parts such as (15,16,17,18,19).

Rotary table of the present utility model (12) is by the intensive steel ball bearing (22) of support (31), main shaft (21), warp-wise, locating sleeve (23), little thrust bearing (20), table surface (24), axial intensive steel ball thrust bearing (27,29,42,43), spacing collar (25), pressing plate (26), bearing seat (32), friction pulley (33), single-row radial ball bearing (34), adapter sleeve (36), corrugated tube (37), connects cover (38) composition.

Support (31) is with the main shaft (21) that is contained in axle center place, be connected with locating sleeve (23) by intensive steel ball bearing (22), all there are lining (39), (28) to make interference fit between main shaft (21), intensive steel ball bearing (22), locating sleeve (23) three, intensive steel ball bearing (22) is made up of spacer sleeve (41) and O level steel ball (40), in its vertical direction upper and lower two little thrust bearings (20) supporting is arranged, prevent that it from having bigger axial float.

Main shaft (21) is connected by screw (44) with table surface (24), and the intensive steel ball thrust bearing of device (27,29,42,43) is made main shaft (21) and table surface (24) axial location usefulness between annular B end face of support (31) and the annular C end face of table surface (24); Following circle (29) is bigger 10 millimeters than last circle (27) diameter, so that check main shaft (21) is to enclosing the error of perpendicularity of (29) down, at Shang Quan (27) and down between the circle (29) bearing support (43) is housed and is evenly distributed on O level steel ball (42) in bearing support (43) hole, and last circle (27), following circle (29) contacts for no channel form point face with steel ball (42), last circle (27), the warp-wise location of following circle (29) is pushed down the location by spacing collar (25) respectively by pressing plate (26), at intensive steel ball thrust bearing (27,29,42,43) labyrinth type dust ring (30) is equipped with in the outer end, stops extraneous dust to enter.

Support (31) is same surface level with the B end face that following circle (29) contacts with the A end face that contacts with locating sleeve (23), annular C end face of table surface (24) and D end face are same surface level, and locating sleeve (23) is that k6/H6 cooperates with the pilot hole of support (31).

The driving torque of main shaft (21) is by driven by motor belt pulley (35), then pass to friction pulley (33), again through connecing cover (38), between spacer sleeve (32) and friction pulley (33), regular grade journal bearing (34) is housed by spacer sleeve (32), spacer shell (36), corrugated tube (37) to main shaft (21).

Fig. 1 is the utility model structural representation.

Fig. 2 is the utility model rotary table structural representation.

The utility model is following comments embodiment:

Screw rod, nut in worm gear, Worm screw and worm-gear drive and the column (3) in the driving torque of handwheel (1) is passed to block (2) are paid, and make measurement bay (4) do upper and lower moving along column (3).

Screw rod, nut in worm gear, Worm screw and worm-gear drive and the column (3) in handwheel (11) driving torque is passed to rotary table (12) base are paid, and make measurement bay (6) do upper and lower moving along column (3).

Measurement bay (4), (6) are two identical covering devices of structure, the gauge head of inductance amesdial (5) (7) is contained in respectively in the connecting hole of measurement bay (4), (6), gauge head (5), (7) can be made longitudinal and transverse, perpendicular three directions by the action of measurement bay (4), (6) and move and the trace adjustment, and can do 360 revolutions of spending directions around longitudinal and transverse, perpendicular three axis, after determining the position, gauge head (5), (7) respectively have lock-screw to fix.

Measured workpiece (8) places on the plane of adjustable bed (9), it is perpendicular or make the plane inclination of adjustable bed (9) with rotary table (12) axial line by three set screw (10) adjustable bed (9) to be in, and is in coaxial or parallel with rotary table (12) axial line with the benchmark axial line that guarantees workpiece (8).

Optical pulse generator (14) is connected with rotary table main shaft (21), and run-in synchronism with it, in operation process, sends signal to computing machine every predetermined angular.

It is to support supporting of the present utility model that footing is adjusted screw (13), and the working face of rotary table (12) is horizontal.

Pilot lamp, button, computer keyboard, dial gauge ammeter (16) are housed on the panel of electric appliance box (15), and this ammeter (16) is calibration of workpieces (8) and the demonstration directly perceived when proofreading and correct the numerical value of inductance amesdial gauge head (5), (7); Digitron (19) has two groups, is two cover inductance amesdial (5,7) output electric weight digital display devices, and digitron (18) is the final demonstration of measured value, and printer (17) can print measurement result by predetermined extent.

The utility model has following advantage:

1, can be in the on-the-spot continuously use of workshop, the transmission accuracy of rotary table main shaft is high and reliable and stable.

2, rotary table can have bigger eccentric load.

3, easily manufactured, cheap, easy to maintenance.

Claims

1, a kind of axiality measuring apparatus is by adjustable bed (9), rotary table (12), dial gauge (5,7), optical pulse generator (14) and microsystem (15,16,17,18,19) form, main shaft (21) warp-wise that it is characterized in that rotary table (12) is located by one grade of intensive steel ball bearing (22), axially by the B that is installed between support (31) and the table surface (24), intensive steel ball thrust bearing (27 on the C annular end face, 29,42,43) location, and the vertical flat lease of horizontal center line of intensive steel ball thrust bearing steel ball (42) is to the axial distance of intensive steel ball bearing.

2, axiality measuring apparatus according to claim 1 is characterized in that having in the transmission device between friction pulley ［ 33 ］ and the main shaft ［ 21 ］ corrugated tube ［ 37 ］ device.