CN203502006U

CN203502006U - Device for measuring external diameter of motor rotor

Info

Publication number: CN203502006U
Application number: CN201320509970.5U
Authority: CN
Inventors: 解永彬
Original assignee: Hefei Kaibang Motor Co Ltd
Current assignee: Hefei Kaibang Motor Co Ltd
Priority date: 2013-08-20
Filing date: 2013-08-20
Publication date: 2014-03-26
Anticipated expiration: 2023-08-20

Abstract

The utility model belongs to the technical field of the measurement of the external diameters of motor rotors, specifically a device for measuring the external diameter of a motor rotor. The device comprises a supporting seat. Measurement arms are disposed at the same side of the supporting seat in an overhanging manner. One end of each measurement arm and the supporting seat form elastic connection, and the elastic opening and closing direction is an inclined angle between two measurement arms and changed in the range of the inclined angle. The other end of each measurement arm is overhung, and the two overhung ends form a bayonet part which clamps the external diameter of the motor rotor. A displacement sensor, which is used for collecting the displacement between the two measurement arms, is disposed between the central bodies of the two measurement arms. The displacement sensor is used for measuring the size of the external diameter of the motor rotor, and feeding back measurement data to a PLC. The PLC adjusts the amount of feed of a pin according to the measurement results, thereby improving measurement precision, improving efficiency of detection, guaranteeing the consistency of the finished products, and achieving closed-loop control of the size of the external diameter of the motor rotor.

Description

Rotor external diameter measuring device

Technical field

The invention belongs to the field of measuring technique of rotor external diameter, be specially a kind of rotor external diameter measuring device.

Background technology

Motor is as important motive power outputting apparatus, be widely used in the every field in productive life, the cage rotor of motor is comprised of rotor core, rotating shaft and rotor winding, rotor core is to have by excircle upper punch to have the silicon steel plate stacking of even wire casing to form, and be fixed in rotating shaft, in the wire casing of rotor core, place rotor winding.The appearance profile integral body of rotor is cylindrical, and when rotor and motor stator assembling, rotor and stator gap are directly connected to serviceable life and the operating noise of motor.The tolerance clearance of rotor and stator the best is that designer calculates, during production, just according to the gap designing, remove to produce stator and rotor, want to reach stator that designer designs and the gap of rotor, must guarantee that the size of rotor and stator reaches designing requirement, in actual production application, when stator and rotor assembling, necessarily require accurate checkout equipment, the size of the two is measured.

In prior art, the detection of rotor diameter is mostly utilized to manual detection, testing staff holds the milscale that precision is higher, by rotor holding in the bayonet socket of milscale, artificial reading, underproof rotor is rejected, qualified rotor enters next process, the measurement of milscale is actual is the outer cylinder that micrometric screw on milscale withstands rotor, then reading, can there is artificial detection error in detection mode of the prior art, rotor is stuck in cannot guarantee it is all that the tangent line that turns by rotor is measured at every turn in the bayonet socket of milscale, measuring accuracy can not be guaranteed, bring impact can to like this quality of motor, and detection mode inefficiency of the prior art.

Summary of the invention

The object of the present invention is to provide a kind of measurement mechanism of rotor diameter, can improve the accuracy that rotor diameter is measured, increase work efficiency.

For achieving the above object, the technical solution used in the present invention is: rotor external diameter measuring device, comprise bearing, on bearing, homonymy overhangs and is provided with gage beam, one end of gage beam and bearing form that elasticity is connected and elasticity folding direction is between angle and size, to change between two measuring arm, the other end of gage beam is that shape and two end that suspends that suspends forms the bayonet part of clamping rotor external diameter to be measured, between the arm body in the stage casing of two measuring arm, the displacement transducer that gathers displacement is between the two set.

Compared with prior art, there is following technique effect in the present invention: the gage beam that bearing both sides arrange, the bayonet part that gage beam and described bearing form, clamping rotor external diameter, utilization is arranged on the outside dimension that displacement transducer on gage beam is measured rotor, and measurement data is fed back to PLC in real time, PLC adjusts the car pin depth of cut according to measurement result, the precision of this detection is improved, detection efficiency is improved, the homogeneity of product that assurance processes, has realized the closed-loop control of rotor diameter size.

Accompanying drawing explanation

Fig. 1 is local structural graph of the present invention;

Fig. 2 is the assembling explosive view of part of the present invention;

Fig. 3 is the axonometric drawing of integral body of the present invention.

Embodiment

In conjunction with Fig. 1～Fig. 3, the present invention is done to further deciphering.

Rotor external diameter measuring device, comprise bearing 20, on bearing 20, homonymy overhangs and is provided with gage beam, one end of gage beam and bearing 20 forms that elasticity are connected and elasticity folding direction is between angle and size, to change between two measuring arm, the other end of gage beam is that shape and two end that suspends that suspends forms the bayonet part of clamping rotor external diameter to be measured, the displacement transducer 50 that gathers displacement is between the two set between the arm body in the stage casing of two measuring arm, the bayonet part that rotor holding forms at gage beam, make to produce between gage beam certain change in displacement, utilize displacement transducer 50, measure the variation between gage beam, thereby can measure the outside dimension of rotor, the precision detecting is improved, detection efficiency is improved.

Further, as one of embodiments of the invention, shown in Fig. 1 and Fig. 2, described bearing 20 and gage beam are conjoined structure and by following formation of structure, whole is that square body utilizes mounting hole A who connects body of wire-electrode cutting device cutting near its one end, the nose end of mounting hole A forms the connecting portion B of thin-walled, the nose end of mounting hole A is close to the side panel face setting of bearing 20, from the middle part of mounting hole A, to the body other end, extend to cut apart and form two poles that are arranged symmetrically with 30 in left and right, two pole 30 projecting ends are arranged to bayonet part, during the bayonet part holding rotor external diameter of pole 30, the mounting hole A offering on bearing 20 forms flexible opening, thin arm connecting portion B forms flexible key position of dehiscing, be arranged on displacement transducer 50 on pole 30 and thereby the outside dimension that change in displacement between pole 30 draws rotor detected.Select said structure effectively in adopting the method for line cutting to implement processing, avoided complicated processing and the assembly process of a plurality of parts, can guarantee the elastic performance of elastic joint part position simultaneously.

As another kind of embodiment of the present invention, realize two poles 30 and can flexiblely open deformation outward, the both side ends of bearing 20 can fixedly have flexible shell fragment, the end of shell fragment is fixedly installed pole 30, displacement transducer 50 is set on pole 30, thereby also can realizes the measurement to the outside dimension of rotor A.

Described bayonet part comprises two column cambered surface slide calliper rule 42 respect to one another, the flat direction of stretching of two slide calliper rule 42 is whole consistent, the holding of rotor outer cylinder is on slide calliper rule 42, slide calliper rule 42 are arranged to two cylinders, the cylinder of slide calliper rule 42 and the cylinder of rotor recline, the reclining of cylinder and cylinder is actually a little and the reclining of point, and point is greatly improved compared with the accuracy of detection of the measurement of face and point or face and face and face and line with the measurement of point.

The housing of displacement transducer 50 is fixed on a pole 30 that forms gage beam, and the measuring junction head rest of displacement transducer 50 is attached on the interior side lever wall of another pole 30.

Shown in Fig. 1 and Fig. 2, described pole 30 suspends to hold and is connected with supporting leg 40, the bearing of trend of supporting leg 40 is consistent with the direction that overhangs of pole 30, two slide calliper rule 42 are cylindrical and inlay card is offered in draw-in groove 41 in the end inner side that suspends of supporting leg 40, a part for slide calliper rule 42 appears on the interior plate face of supporting leg 40, described two slide calliper rule 42 projecting ends are that 421Qie Liang inclined-plane, inclined-plane 421 is splayed opening shape layout, the projecting end of supporting leg 40 also corresponding setting arranges with slide calliper rule 42 inclined-plane that inclined-plane 421 gradients are identical or close, also can be the cambered surface with suitable curvature, the benefit of design is like this: be not only convenient to rotor to import in slide calliper rule 42, can also reduce the injury to rotor outside.

In order to obtain optimum efficiency between processing technology and measuring accuracy, in the present invention, pole 30, suspend and hold connection leg 40 modes to complete, for realizing pole 30 and being connected very easily of supporting leg 40, and can guarantee to connect precision and intensity, for fluting on supporting leg 40, offer draw-in groove 41 is also easily to realize simultaneously, and the processing on the face of cylinder of slide calliper rule 42 also easily realizes processing besides, so said structure is preferred version.

Further, displacement transducer 50 is high-precision sensors, according to designing requirement, select suitable stroke, displacement transducer 50 outward appearances are penholder shape, when displacement transducer 50 is arranged on pole 30, the slide calliper rule 42 holding rotors that arrange on supporting leg 40, the variation that makes two poles 30 produce distance, and displacement transducer 50 detects the change of distance of pole 30, the projection 31 extending is toward each other set between the interior side lever wall of described pole 30, two projection 31 clearance-type laminatings are close, and projection 31 is arranged between displacement transducer 50 and slide calliper rule 42.Under the idle state of measurement mechanism, projection 31 reclines very close to each other, it is the place, reference position of displacement transducer 50, during measurement mechanism clamping rotor, the PLC that the information that displacement transducer 50 collects the change of distance of pole 30 feeds back to device processes, because slide calliper rule 42 are relative fixing with the position of rotor contact, slide calliper rule 42 are fixed range with the centre distance of kidney-shaped A, and after slide calliper rule 42 contact with measured rotor, mounting hole A point can produce elastic deformation.Simultaneous displacement passes device 50 and also produces displacement, by using standard cylinder contraposition shift according to carrying out the calibration of upper and lower and reference point, also can calculate slide calliper rule 42 to the variable quantity of displacement transducer 50 horizontal centre distance and the relation of distance, thereby confirm the multiplying power of corresponding variable quantity, thereby guarantee Measurement accuracy.If the information that displacement transducer 50 gathers is not within the margin tolerance of setting at rotor, displacement transducer 50 feeds back to PLC by information, changes the depth of cut or the withdrawing amount of cutter.

As depicted in figs. 1 and 2, between two poles 30, be connected with extension spring 60, the fixed connection place of extension spring 60 is between the connecting portion B of displacement transducer 50 and thin-walled.Like this, the two ends of extension spring 60 are fastened on respectively on the lever arm of pole 30, under the pulling force effect of extension spring 60, two poles 30 are the trend of the formula of drawing close, in the time of so just can guaranteeing to measure, slide calliper rule 42 contact with the reliable of UUT, guarantee the accuracy of measurement, in addition as previously mentioned, when two projections 31 touch, under this contact condition, can be defined as the benchmark position of displacement transducer 50.

Further, shown in Fig. 3, the cylinder body of cylinder 70 is arranged in frame 10, and cylinder 70 drags bearing 20 and pumps along the vertical direction of work top, the described moving direction of bearing 20 and overlapping of two slide calliper rule 42 places.A station in producing as rotor, rotor utilizes conveying device to be transported to the bottom of detecting frock supporting leg 40, cylinder 70 promotes fixed head 20 and moves downward, thereby rotor holding is realized and being detected at the slide calliper rule 42 of 40 li of settings of supporting leg, and degree has improved automatically.

Finally, shown in Fig. 3, the cylinder body plate face of described cylinder 70 is fixed in frame 10, and frame 10 is arranged so that the whole device of cylinder vertically points to worktable, the corresponding supporting part that support rotor is set on the face of worktable.

Claims

1. rotor external diameter measuring device, it is characterized in that: comprise bearing (20), the upper homonymy of bearing (20) overhangs and is provided with gage beam, one end of gage beam is connected with bearing (20) formation elasticity and elasticity folding direction is that between two measuring arm, angle changes between size, the other end of gage beam is that shape and two end that suspends that suspends forms the bayonet part of clamping rotor external diameter to be measured, and the displacement transducer (50) that gathers displacement is between the two set between the arm body in the stage casing of two measuring arm.

2. rotor external diameter measuring device according to claim 1, it is characterized in that: described bearing (20) and gage beam are conjoined structure and by following formation of structure, whole for square body near one end-grain cutting cut a mounting hole A who connects body, the nose end of mounting hole A forms the connecting portion B of thin-walled, middle part from mounting hole A is extended and is cut apart formation left and right two poles that are arranged symmetrically with (30) to the body other end, and two poles (30) projecting end is arranged to bayonet part.

3. rotor external diameter measuring device according to claim 2, is characterized in that: described bayonet part comprises two column cambered surface slide calliper rule respect to one another (42), and the flat direction of stretching of two slide calliper rule (42) is whole consistent.

4. rotor external diameter measuring device according to claim 1 and 2, it is characterized in that: the pole (30) that the housing of displacement transducer (50) is fixed on formation gage beam is upper, and the measuring junction head rest of displacement transducer (50) is attached on the interior side lever wall of another pole (30).

5. rotor external diameter measuring device according to claim 3, it is characterized in that: described pole (30) suspends to hold and is connected with supporting leg (40), the bearing of trend of supporting leg (40) is consistent with the direction that overhangs of pole (30), two slide calliper rule (42) are for cylindrical and inlay card is in supporting leg (40) suspends the draw-in groove (41) that end inner side offers, and described two slide calliper rule (42) projecting end is that inclined-plane (421) and two inclined-planes (421) are splayed opening shape and arrange.

6. rotor external diameter measuring device according to claim 5, it is characterized in that: the projection (31) extending is toward each other set between the interior side lever wall of described pole (30), the laminating of two projections (31) clearance-type is close, and projection (31) is arranged between displacement transducer (50) and slide calliper rule (42).

7. rotor external diameter measuring device according to claim 5, is characterized in that: between two poles (30), be connected with extension spring (60), the fixed connection place of extension spring (60) is positioned between displacement transducer (50) and the connecting portion B of thin-walled.

8. rotor external diameter measuring device according to claim 1 and 2, it is characterized in that: described bearing (20) is fastening with the piston rod end of cylinder (70), it is upper that the cylinder body of cylinder (70) is arranged on frame (10), and cylinder (70) drags bearing (20) and pumps along the vertical direction of work top.