CN113607027A - Outer diameter measuring equipment of motor end cover - Google Patents
Outer diameter measuring equipment of motor end cover Download PDFInfo
- Publication number
- CN113607027A CN113607027A CN202110772551.XA CN202110772551A CN113607027A CN 113607027 A CN113607027 A CN 113607027A CN 202110772551 A CN202110772551 A CN 202110772551A CN 113607027 A CN113607027 A CN 113607027A
- Authority
- CN
- China
- Prior art keywords
- end cover
- head
- motor end
- measuring
- outer diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005259 measurement Methods 0.000 claims description 79
- 238000009434 installation Methods 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 19
- 238000001514 detection method Methods 0.000 description 9
- 238000003754 machining Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229910001566 austenite Inorganic materials 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000001915 proofreading effect Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 208000032369 Primary transmission Diseases 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
Abstract
The invention provides an outer diameter measuring device of a motor end cover, and belongs to the technical field of fans. The technical problem that the precision of the end cover of the specific motor measured by the existing outer diameter measuring equipment is poor is solved. Two tool baffle plates of the outer diameter measuring equipment of the motor end cover are arranged in parallel and are fixedly connected with the left side and the right side of the tool bottom plate respectively, the end cover baffle plates are arranged at the rear end of the tool bottom plate, a measuring auxiliary head is arranged in the middle of one tool baffle plate, a dial indicator is arranged in the middle of the other tool baffle plate, the measuring auxiliary head and the central axis of the measuring head of the dial indicator are located on the same straight line, and the distance between the central axis of the measuring auxiliary head and the end cover baffle plate is equal to the outer radius of the second connecting part. The invention adopts the dial indicator, the contact of the measuring head of the dial indicator is always positioned on the central axis in the expansion process, the deflection does not occur, the precision and the accuracy are higher, and the measuring head of the dial indicator is smaller, so that the dial indicator can better adapt to the second connecting part with small thickness.
Description
Technical Field
The invention belongs to the technical field of fans, and particularly relates to an outer diameter measuring device for a motor end cover.
Background
The fan is a machine which increases the gas pressure and discharges the gas by means of the input mechanical energy. Fans are widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, and for ventilation and draught of boilers and industrial furnaces and kilns; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grain, wind tunnel wind source and air cushion boat inflating and propelling.
Generally, a motor and blades of a fan are directly connected, but in industrial equipment such as a cooling tower, a boiler and an industrial furnace, a reduction gearbox is sometimes required to be additionally arranged between the motor and the blades, so that different requirements on output torque under different use working conditions are met. When the fan is assembled, the reduction gearbox base is fixed on a motor end cover of the motor, and then the reduction gearbox shell is fixed on the reduction gearbox base; the motor end cover comprises an end cover main body, a first connecting part and a second connecting part, wherein the first connecting part is arranged on one side of the end cover main body and connected with a motor, the second connecting part is arranged on the other side of the end cover main body and connected with a reduction gearbox, and the second connecting part is circular and protrudes out of the end cover main body.
The thickness of the second connecting part on the motor end cover is only about 2mm due to the structural requirement of the motor produced by the applicant, and the measured thickness is very small, so that the thickness is difficult to measure by a traditional outside micrometer; if the thickness reaches more than 6mm, we can measure it with an outside micrometer, however, the structure has limited these conditions, and the outside micrometer has a feature: it has two gauge heads, one is fixed gauge head, and one is the activity gauge head, and fixed gauge head is motionless, and this does not influence the measurement, but, this activity gauge head is along with the screw thread pivoted, and it is in the measurement process, and we need rotatory screw thread to let the activity head be close by the measured surface, and along with the rotation of screw thread, the activity head also follows the rotation. When the measuring surface of the movable head is just contacted with the measured surface of the workpiece, the measured point of the workpiece is not in the diameter direction due to the action of friction force, the measured point is often deviated from the diameter direction due to rotation, and the measurement is in the non-diameter direction of a circle, so that the measurement is inaccurate. Through the experiment of the applicant, the measurement data obtained after the same person measures the second connecting part of the same workpiece for 10 times at the same measurement place at the same time point shows that:
| serial number | Theoretical size (outside diameter) | |
| 1 | 50-0.01 | 49.935 |
| 2 | 50-0.01 | 49.955 |
| 3 | 50-0.01 | 49.986 |
| 4 | 50-0.01 | 49.995 |
| 5 | 50-0.01 | 49.945 |
| 6 | 50-0.01 | 49.965 |
| 7 | 50-0.01 | 49.955 |
| 8 | 50-0.01 | 49.965 |
| 9 | 50-0.01 | 49.986 |
| 10 | 50-0.01 | 49.997 |
Due to the above-mentioned factors, the measured data is very incorrect, and we cannot obtain data close to an objective value, and the quality control fails due to inaccurate measurement.
The diameter size of the second connecting part is important for the whole motor, and is a key for matching the motor with the gear box, if the error is large, the gear box and the motor are difficult to assemble, so that the assembly quality and the assembly efficiency are reduced; the motor output is a gear and is a primary transmission, and the control of the center-to-center distance of the two gears is affected by the size of the gear. If the control of the center distance is not ideal, resonance and noise are generated during the transmission of the first-stage gear, and the service life of the motor is seriously influenced.
As another scheme, the size of the motor end cover can be measured on a high-precision three-coordinate system, but for an enterprise producing more than 3000 motors in one day, the cost is high and the efficiency is low when the product is sent to a detection room for detection.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the outer diameter measuring equipment which can measure the outer diameter of the second connecting part in the motor end cover of the motor and has higher measuring precision.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides an outer diameter measurement equipment of motor end cover which characterized in that: including frock bottom plate and two frock baffles, two frock baffle parallel arrangement just link firmly with the left and right sides of frock bottom plate respectively, the rear end of frock bottom plate is equipped with the end cover baffle that can support and lean on with the second connecting portion of motor end cover, and the middle part of one of them frock baffle is equipped with along transversely can supporting the measurement auxiliary head who supports with the second connecting portion of motor end cover, and the middle part of another frock baffle is along transversely being equipped with the amesdial, the measuring head of amesdial stretches out and can support and lean on with the second connecting portion of motor end cover from the medial surface of frock baffle, the axis of measuring auxiliary head and the measuring head of amesdial all is located same straight line, the distance of the axis of the measuring head of measurement auxiliary head and amesdial and end cover baffle equals the outside radius of the second connecting portion of motor end cover.
The outer diameter measuring equipment can be placed on the side of a machining lathe and measured by staff who machines the procedure, when a machined workpiece is taken down from the lathe, the measurement and data transmission can be completed on the tool by hands, then the machining condition of the procedure is judged immediately by the control center, if the size deviation occurs, the control center immediately sends a signal to stop the machining of the lathe, waste products are avoided, the measurement is simpler, the detection cost is lower, and the detection speed is high.
The measuring instrument adopted in the outer diameter measuring equipment is a dial indicator, and the measuring head of the measuring instrument moves linearly along the axis direction of the fixed rod of the dial indicator, so that the contact of the measuring head is always positioned on the central axis in the stretching process and deflection does not occur, and therefore, the measured point of a workpiece can be ensured to be always in the diameter direction of the workpiece only by controlling the coaxiality between the measuring auxiliary head and the measuring head of the dial indicator and the distance between the central axis of the measuring head of the dial indicator and the end cover baffle, the accuracy of the outer diameter measuring equipment and the measuring accuracy are improved, the measuring head of the dial indicator is smaller, and the measuring head can be better suitable for a second connecting part with small thickness.
Because this external diameter measurement equipment is the relative measurement to the measurement of the second connecting portion of motor end cover, measure the axis that auxiliary head and amesdial measuring head can not really be located same straight line when the assembly, measure the distance between the axis of auxiliary head and amesdial measuring head and end cover baffle and also can not be exactly equal to the theoretical external radius of motor end cover second connecting portion, what we can do is that the axis that makes measurement auxiliary head and amesdial measuring head is infinitely close, make the distance between the axis that measures auxiliary head and amesdial measuring head and end cover baffle infinitely close the external radius of the second connecting portion of motor end cover, thereby improve measuring accuracy.
In order to enable the central axis of the measurement auxiliary head to be infinitely close to the central axis of the measuring head of the dial indicator, the two tool baffles are fixedly connected with the tool bottom plate firstly in the production process, then the two mounting holes are cut on the two tool bottom plates at one time, and then the fixing rods of the measurement auxiliary head and the dial indicator are inserted into the corresponding mounting holes and fixed.
In order to determine the influence of the distance between the central axes of the measurement auxiliary head and the dial indicator measuring head and the end cover baffle on the measurement accuracy, a technician makes a schematic diagram as shown in fig. 7, and obtains the following formula from a right triangle trigonometric function relation:
Δ＝r-h；
the outer radius of the second connecting part of the motor end cover produced by the company is generally 25mm, and if e is 0.7mm, Δ is 0.0098mm, which means that the deviation of the distance between the central axes of the measuring auxiliary head and the dial gauge measuring head and the end cover baffle is allowed to be within 0.7 mm. When the outer diameter measuring equipment is manufactured, the end cover baffle can be fixed on a tool bottom plate firstly, then the end cover baffle is cut by a knife on slow-moving wire cutting, so that the distance between the front end surface of the end cover baffle and the central axis of the measurement auxiliary head or the dial indicator measuring head is close to the outer radius of the second connecting part, finally the distance between the front end surface of the end cover baffle and the central axis of the measurement auxiliary head or the dial indicator measuring head is close to the outer radius of the second connecting part, and the error of the distance between the front end surface of the end cover baffle and the central axis of the measurement auxiliary head or the dial indicator measuring head is kept within 0.7 mm.
Further, in order to make the measured data more accurate, a standard block with a diameter very close to the true value can be manufactured, and then the dial indicator can be calibrated to 0 bit by using the standard block.
This external diameter measurement equipment is after the zero-bit of proofreading amesdial, only need place on the frock bottom plate and inwards push away the second connecting portion and the end cover baffle that reach the motor end cover to be measured and lean on to the motor end cover, then can obtain whether qualified this work piece according to the dimensional data of the demonstration on the amesdial, easy operation need not special measurement personnel, and ordinary operation workman just can accomplish the detection, and the threshold that detects is lower.
In the outer diameter measuring equipment of the motor end cover, a plurality of transverse grooves are formed in the upper side face of the tool bottom plate at intervals along the longitudinal direction, and the tool bottom plate is penetrated through the transverse grooves along the transverse direction.
The upper side surface of the tool bottom plate is a plane, even if the tool bottom plate is placed on a surface grinding machine to be ground flat in a large area, the tool bottom plate is microscopically uneven, and in order to prevent the unevenness of the upper side surface of the tool bottom plate from influencing the measurement accuracy, the large area is emptied, so that the usable area is reduced, and the flatness of the upper side surface of the tool bottom plate is relatively improved; furthermore, the tool bottom plate is subjected to quenching treatment, incomplete austenite is certainly left in the tool bottom plate after treatment, the upper side surface of the tool bottom plate can slightly deform in the later use or temperature change process, the plane is cut off by arranging the transverse groove, the large area of the plane is discontinuous, the influence of long-time use or temperature change is minimized, and the accuracy and the stability of the outer diameter measuring equipment are further improved.
In the above outer diameter measuring device for the motor end cover, the widths and depths of all the transverse grooves are equal, and the distances between two adjacent transverse grooves are equal.
Above-mentioned design not only makes the side of going up of frock bottom plate have more the aesthetic feeling, can also make the side of going up of frock bottom plate between two adjacent cross slots simultaneously even receive the influence of austenite, also can make the influence that every section received close to make the deformation of the side of going up of frock bottom plate littleer on the whole, further improve this external diameter measuring equipment's precision and stability.
In the above outer diameter measuring device of the motor end cover, the inner ends of the measuring auxiliary head and the measuring head are both formed with the contact in an inward shrinkage mode, the inner end of the contact can abut against the second connecting part of the motor end cover, the thickness of the inner end of the contact is smaller than or equal to 3mm, and the length L1 of the contact is larger than or equal to the distance D between the outer side surface of the end cover body of the motor end cover and the outer side surface of the second connecting part.
The design of the contact is beneficial to improving the adaptability of the contact with a second connecting part of the motor end cover, so that the contacts of the measuring auxiliary head and the measuring head are positioned in the middle of the inner end surface of the contact during measurement, and the measured point of the second connecting part is superposed with the contacts of the measuring auxiliary head and the measuring head, thereby being beneficial to improving the measurement precision; meanwhile, the contact can be prevented from contacting with the end cover main body of the motor end cover in the measuring process, the diameter of the contact deviated from the second connecting part due to the contact with the end cover main body is placed, and the measuring precision is further improved.
In the above outer diameter measuring device for the motor end cover, the contact is cylindrical or conical with a small inner part and a large outer part, and the inner end surface of the contact is a spherical surface.
The inner end surface of the contact is a spherical surface, so that the contact area between the contact and the second connecting part is reduced, the contact position between the contact and the second connecting part is a small point, and the contact point is positioned on the central axis of the measuring head or the measuring auxiliary head, so that the measurement is more accurate, and the measurement precision can be further improved.
In the outer diameter measuring equipment of the motor end cover, the middle parts of the two tool baffles are respectively provided with a mounting hole which penetrates through the two tool baffles along the transverse direction, the diameters of the two mounting holes are the same, the upper end surfaces of the two tool baffles are respectively provided with a positioning hole communicated with the mounting hole along the vertical direction, and a first fastening piece for fixing a corresponding measuring auxiliary head or a fixing rod of a dial indicator is arranged in the positioning hole.
The diameters of the two mounting holes are the same, so that the two mounting holes can be cut at one time when the device is convenient to produce, good coaxiality between the two mounting holes is ensured, and the accuracy of measurement is ensured.
In foretell outer diameter measuring equipment of motor end cover, all be equipped with the locating hole that communicates with the mounting hole along vertical direction on the up end of two frock baffles, the lower tip of locating hole is equipped with the setting element, the lower tip of setting element is equipped with the lateral wall complex arcwall face with the supplementary head of measurement or the amesdial dead lever that corresponds, the upper end of locating hole is equipped with the internal thread, the upper end threaded connection of first fastener and locating hole, first fastener can push down the setting element and will measure supplementary head or amesdial dead lever fixedly.
Above-mentioned setting element and setting element lower extreme arcwall face's design makes the setting element can more laminate with measuring auxiliary head or amesdial dead lever to through the buffering of setting element, first fastener rotates and moves down the rotatory power of in-process drive measurement auxiliary head or amesdial dead lever littleer, can avoid measuring auxiliary head or amesdial dead lever and taking place to deflect by fixed in-process, thereby lead to measuring the diameter of the skew second connecting portion of contact of auxiliary head or amesdial dead lever, be favorable to improving measuring precision and accuracy.
In foretell outer diameter measurement equipment of motor end cover, be equipped with the constant head tank along vertical direction on the lateral wall of locating hole, the shaping has the location arch with constant head tank complex on the lateral wall of setting element, the location arch can insert in the constant head tank and reciprocate along the constant head tank.
The design of the positioning bulges on the positioning piece and the positioning grooves in the positioning holes can avoid the rotation of the positioning piece around the axis of the positioning piece, so that the positioning piece only applies vertical pressure to the auxiliary measuring head or the dial indicator fixing rod matched with the positioning piece, and does not have any force for driving the auxiliary measuring head or the dial indicator fixing rod to rotate horizontally, thereby further improving the precision of the outer diameter measuring equipment.
In foretell motor end cover's external diameter measuring equipment, the end cover baffle includes installation department and the portion of supporting as an organic whole of shaping, support the portion of supporting and be located the front end of installation department and support the preceding terminal surface of portion and can support with the lateral wall of the second connecting portion of motor end cover and support, there is the clearance between the downside of supporting the portion and the side of going up of end cover main part, the length L2 who supports the portion is greater than the distance D between motor end cover main part lateral surface and the second connecting portion lateral surface of motor end cover, the installation department links firmly through two at least second fasteners with the frock bottom plate, the leading flank who supports the portion is vertical plane and is on a parallel with the axis of measuring auxiliary head and amesdial measuring head.
The abutting part is a vertical plane and is parallel to the central axes of the measurement auxiliary head and the dial indicator measuring head, so that the central axes of the measurement auxiliary head and the dial indicator measuring head are located on the diameter of the second connecting part as long as the second connecting part of the motor end cover abuts against the front side surface of the abutting part, and the measurement is simpler and more accurate; the length of the abutting part and the design that a gap exists between the lower side surface of the abutting part and the upper side surface of the end cover main body can improve the stability and accuracy of the abutting part in measurement; further, support the unsettled design of portion and support the portion and be far below the thickness of installation department, be convenient for cut the portion of supporting after fixing the end cover baffle, make the preceding terminal surface that supports the portion and measure the outer radius that the distance between the axis of auxiliary head and amesdial measuring head is more close the second connecting portion to improve this external diameter measurement equipment's precision.
In the above outer diameter measuring device of the motor end cover, a 485 output interface or a wireless transmitter for transmitting the measurement data is arranged on the dial indicator.
Above-mentioned 485 output interface or wireless transmitter's design can give the computer with the data transmission who records, can save the manual process of looking over the amesdial numerical value, in the rated value that the data that record prestores in the computer, the motor end cover is qualified product, exceed the rated value of predetermineeing in the computer when the data that measure, the motor end cover that should be surveyed is unqualified product, can set up the computer and send sound or light signal suggestion operator and take out unqualified product, it is further, can also make statistics of measured data, make the trend graph, thereby the trend of fine prejudgement lathe, prevent that the lathe damages suddenly and lead to the work piece unqualified.
Compared with the prior art, the invention has the technical effects that:
the measuring instrument adopted in the outer diameter measuring equipment is a dial indicator, and the measuring head of the measuring instrument moves linearly along the axis direction of the fixed rod of the dial indicator, so that the contact of the measuring head is always positioned on the central axis in the stretching process and deflection does not occur, and therefore, the measured point of a workpiece can be ensured to be always in the diameter direction of the workpiece only by controlling the coaxiality between the measuring auxiliary head and the measuring head of the dial indicator and the distance between the central axis of the measuring head of the dial indicator and the end cover baffle, the accuracy of the outer diameter measuring equipment and the measuring accuracy are improved, the measuring head of the dial indicator is smaller, and the measuring head can be better suitable for a second connecting part with small thickness.
Drawings
Fig. 1 is a top view of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is a cross-sectional view at the motor end cap and end cap baffle of the present invention.
FIG. 4 is a schematic view of the connection structure of the fixing rod and the positioning member of the dial indicator of the present invention.
Fig. 5 is a schematic structural diagram of the positioning member of the present invention.
FIG. 6 is an enlarged view of a portion of the tooling plate mounting hole and the locating hole of the present invention.
FIG. 7 is a graphical representation of the radius of the present invention as a function of actual sensed values.
In the figure, 1, a tool bottom plate; 11. a transverse groove; 2. a tooling baffle plate; 21. mounting holes; 22. positioning holes; 221. positioning a groove; 23. a positioning member; 231. an arc-shaped surface; 232. positioning the projection; 24. a first fastener; 3. an end cap baffle; 31. an installation part; 32. an abutting portion; 33. a second fastener; 4. a measurement auxiliary head; 5. a dial indicator; 51. a measuring head; 52. fixing the rod; 6. a contact; 7. a motor end cover; 71. an end cap body; 72. a first connection portion; 73. a second connecting portion.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
The outer diameter measuring equipment of the motor end cover comprises a tool bottom plate 1 and two tool baffle plates 2, wherein the two tool baffle plates 2 are arranged in parallel and are respectively and fixedly connected with the left side and the right side of the tool bottom plate 1, the end cover baffle plate 3 which can be abutted against a second connecting part 73 of the motor end cover 7 is arranged at the rear end of the tool bottom plate 1, the middle part of one of them frock baffle 2 is along transversely being equipped with the measurement auxiliary head 4 that can support by with the second connecting portion 73 of motor end cover 7, the middle part of another frock baffle 2 is along transversely being equipped with amesdial 5, the measuring head 51 of amesdial 5 stretches out and can support by with the second connecting portion 73 of motor end cover 7 from the medial surface of frock baffle 2, the axis of measuring auxiliary head 4 and the measuring head 51 of amesdial 5 all is located same straight line, the distance of measuring auxiliary head 4 and the measuring head 51 of amesdial 5 and end cover baffle 3 equals the outer radius of the second connecting portion 73 of motor end cover 7.
The outer diameter measuring equipment can be placed on the side of a machining lathe and measured by staff who machines the procedure, when a machined workpiece is taken down from the lathe, the measurement and data transmission can be completed on the tool by hands, then the machining condition of the procedure is judged immediately by the control center, if the size deviation occurs, the control center immediately sends a signal to stop the machining of the lathe, waste products are avoided, the measurement is simpler, the detection cost is lower, and the detection speed is high.
The adopted measuring instrument in the outside diameter measuring equipment is the dial indicator 5, and the measuring head 51 of the measuring instrument is linearly moved along the axial direction of the fixing rod 52 of the dial indicator 5, so that the contact point of the measuring head 51 is always positioned on the central axis in the stretching process and deflection does not occur, and therefore, the measured point of the workpiece can be ensured to be always in the diameter direction of the workpiece only by controlling the coaxiality between the measuring auxiliary head 4 and the measuring head 51 of the dial indicator 5 and the distance between the central axis of the measuring head 51 of the dial indicator 5 and the end cover baffle 3, the measuring instrument is favorable for improving the precision and the measuring accuracy of the outside diameter measuring equipment, the measuring head 51 of the dial indicator 5 is smaller, and the measuring instrument can be better suitable for the second connecting part 73 with small thickness.
Because the measurement of the second connecting part 73 of the motor end cover 7 by the external diameter measuring equipment is relative measurement, the central axes of the measuring auxiliary head 4 and the measuring head 51 of the dial indicator 5 cannot be really positioned in the same straight line during assembly, and the distance between the central axes of the measuring auxiliary head 4 and the measuring head 51 of the dial indicator 5 and the end cover baffle plate 3 cannot be exactly equal to the theoretical outer radius of the second connecting part 73 of the motor end cover 7, we can do so that the central axes of the measuring auxiliary head 4 and the measuring head 51 of the dial indicator 5 are infinitely close, and the distance between the central axes of the measuring auxiliary head 4 and the measuring head 51 of the dial indicator 5 and the end cover baffle plate 3 is infinitely close to the outer radius of the second connecting part 73 of the motor end cover 7, so that the measurement accuracy is improved.
In order to enable the central axis of the measuring auxiliary head 4 and the central axis of the measuring head 51 of the dial indicator 5 to be infinitely close to each other, the two tool baffles 2 are fixedly connected with the tool bottom plate 1 firstly in the production process, then the two mounting holes 21 are cut on the two tool bottom plates 1 at one time, and then the fixing rods 52 of the measuring auxiliary head 4 and the dial indicator 5 are inserted into the corresponding mounting holes 21 and fixed.
In order to determine the influence of the distance between the central axes of the measuring auxiliary head 4 and the measuring head 51 of the dial indicator 5 and the end cover baffle 3 on the measurement accuracy, the technician makes a schematic diagram as shown in fig. 7, and obtains the following formula from a right triangle trigonometric function relation:
Δ＝r-h；
the outer radius of the second connecting portion 73 of the motor end cover 7 manufactured by this company is generally 25mm, assuming that e is 0.7mm, Δ is 0.0098mm, this means that the deviation of the distance between the central axes of the measuring aid 4 and the measuring head 51 of the dial indicator 5 and the end cover shield 3 is allowed to be within 0.7mm, when the outer diameter measuring equipment is manufactured, the end cover baffle 3 can be fixed on the tool bottom plate 1, then the end cover baffle plate 3 is cut on a slow-moving wire cutting machine, so that the distance between the front end surface of the end cover baffle plate 3 and the central axis of the measuring auxiliary head 4 or the measuring head 51 of the dial indicator 5 is close to the outer radius of the second connecting part 73, finally, the distance between the front end surface of the end cover baffle plate and the central axis is cut to be closer to the outer radius of the second connecting part 73, and the error of the distance between the two is kept within 0.7mm, so that the requirement of measurement on the tool manufacturing precision is completely ensured.
Further, in order to make the measured data more accurate, a standard block with a diameter very close to the true value is first manufactured, and then the dial indicator 5 is calibrated to 0 bit by using the standard block.
This external diameter measurement equipment is after proofreading the zero-bit of good amesdial 5, only need place on the frock bottom plate 1 and inwards push away the second connecting portion 73 and the end cover baffle 3 that reach motor end cover 7 to be measured and lean on, then can obtain whether qualified this work piece according to the size data of the demonstration on the amesdial 5, easy operation need not special measurement personnel, and ordinary operation workman just can accomplish the detection, and the threshold of detection is lower.
As shown in fig. 1 and 3, a plurality of transverse grooves 11 are longitudinally arranged on the upper side surface of the tooling bottom plate 1 at intervals, and the tooling bottom plate 1 is penetrated through the transverse grooves 11 along the transverse direction; the width and depth of all the transverse grooves 11 are equal, and the distance between two adjacent transverse grooves 11 is equal. The upper side surface of the tooling bottom plate 1 is a plane, even if the tooling bottom plate is placed on a surface grinding machine to be ground flat in a large area, the tooling bottom plate is microscopically uneven, and in order to prevent the unevenness of the upper side surface of the tooling bottom plate 1 from influencing the measurement accuracy, the large area is emptied, so that the usable area is reduced, and the flatness of the upper side surface of the tooling bottom plate 1 is relatively improved; furthermore, the tool bottom plate 1 is quenched, incomplete austenite is left in the tool bottom plate after the quenching treatment, the upper side surface of the tool bottom plate 1 can slightly deform in the later use or temperature change process, and the plane is cut off by arranging the transverse groove 11, so that the large area of the plane is discontinuous, the influence of long-time use or temperature change is minimized, and the accuracy and the stability of the outer diameter measuring equipment are further improved; further, the width and the depth of the transverse grooves 11 are equal, and the design that the distances between two adjacent transverse grooves 11 are equal not only enables the upper side surface of the tool bottom plate 1 to have more aesthetic feeling, but also enables the upper side surface of the tool bottom plate 1 between two adjacent transverse grooves 11 to be affected by austenite, so that the influence of each section is close to each other, the deformation of the upper side surface of the tool bottom plate 1 is smaller on the whole, and the precision and the stability of the outer diameter measuring equipment are further improved.
As shown in fig. 1, 2 and 4, the inner ends of the measurement auxiliary head 4 and the measurement head 51 are both inwardly shrunk and formed with a contact 6, the inner end of the contact 6 can abut against the second connecting part 73 of the motor end cover 7, the thickness of the inner end of the contact 6 is less than or equal to 3mm, and the length L1 of the contact 6 is greater than or equal to the distance D between the outer side surface of the end cover main body 71 of the motor end cover 7 and the outer side surface of the second connecting part 73; the contact 6 is cylindrical or conical with a small inside and a large outside, and the inner end surface of the contact 6 is spherical. The design of the contact 6 is beneficial to improving the adaptability with the second connecting part 73 of the motor end cover 7, so that the contact points of the measurement auxiliary head 4 and the measuring head 51 are positioned in the middle of the inner end surface of the contact, and the measured point of the second connecting part 73 is superposed with the contact points of the measurement auxiliary head 4 and the measuring head 51, thereby being beneficial to improving the measurement precision; meanwhile, the contact 6 can be prevented from being contacted with the end cover main body 71 of the motor end cover 7 in the measuring process, the contact of the contact 6 deviates from the diameter of the second connecting part 73 due to the contact with the end cover main body 71, and the measuring precision is further improved; the inner end surface of the contact 6 is a spherical surface, which is beneficial to reducing the contact area between the contact 6 and the second connecting part 73, so that the contact position between the contact 6 and the second connecting part is a small point, and the contact point is positioned on the central axis of the measuring head 51 or the auxiliary measuring head 4, so that the measurement is more accurate, and the measurement precision can be further improved.
As shown in fig. 2 and 6, the middle portions of the two fixture baffles 2 are respectively provided with a mounting hole 21 penetrating through the two fixture baffles in the transverse direction, the diameters of the two mounting holes 21 are the same, the upper end surfaces of the two fixture baffles 2 are respectively provided with a positioning hole 22 communicated with the mounting hole 21 in the vertical direction, and a first fastening piece 24 for fixing the corresponding measurement auxiliary head 4 or the fixing rod 52 of the dial indicator 5 is arranged in the positioning hole 22. The diameters of the two mounting holes 21 are the same, so that the two mounting holes 21 can be cut at one time during production, good coaxiality between the two mounting holes 21 is ensured, and the measuring accuracy is ensured.
As shown in fig. 4-6, a positioning member 23 is disposed at the lower end of the positioning hole 22, an arc-shaped surface 231 matched with the outer side wall of the corresponding auxiliary measuring head 4 or fixing rod 52 of the dial indicator 5 is disposed at the lower end of the positioning member 23, an internal thread is disposed at the upper end of the positioning hole 22, a first fastening member 24 is in threaded connection with the upper end of the positioning hole 22, and the first fastening member 24 can press down the positioning member 23 and fix the auxiliary measuring head 4 or fixing rod 52 of the dial indicator 5; the side wall of the positioning hole 22 is provided with a positioning groove 221 along the vertical direction, the outer side wall of the positioning member 23 is formed with a positioning protrusion 232 matched with the positioning groove 221, and the positioning protrusion 232 can be inserted into the positioning groove 221 and move up and down along the positioning groove 221. The design of the positioning element 23 and the arc-shaped surface 231 at the lower end of the positioning element 23 enables the positioning element 23 to be more attached to the measurement auxiliary head 4 or the fixing rod 52 of the dial indicator 5, and the force for driving the measurement auxiliary head 4 or the fixing rod 52 of the dial indicator 5 to rotate is smaller in the process that the first fastening element 24 rotates and moves downwards through the buffering of the positioning element 23, so that the deflection of the measurement auxiliary head 4 or the fixing rod 52 of the dial indicator 5 in the process of being fixed can be avoided, the contact of the measurement auxiliary head 4 or the fixing rod 52 of the dial indicator 5 deviates from the diameter of the second connecting part 73, and the measurement precision and accuracy can be improved; the design of the positioning protrusion 232 on the positioning member 23 and the positioning groove 221 in the positioning hole 22 can prevent the positioning member 23 from rotating around the axis thereof, so that only vertical pressure is applied to the auxiliary measuring head 4 or the fixing rod 52 of the dial indicator 5 matched with the positioning member 23, no force for driving the auxiliary measuring head 4 or the fixing rod 52 of the dial indicator 5 to rotate horizontally exists, and the accuracy of the outer diameter measuring equipment is further improved. The first fastening member 24 is a socket head cap screw or a flat head screw.
As shown in fig. 1 and fig. 3, the end cover baffle 3 includes a mounting portion 31 and an abutting portion 32 which are integrally formed, the abutting portion 32 is located at the front end of the mounting portion 31, the front end surface of the abutting portion 32 can abut against the outer side wall of the second connecting portion 73 of the motor end cover 7, a gap exists between the lower side surface of the abutting portion 32 and the upper side surface of the end cover main body 71, the length L2 of the abutting portion 32 is greater than the distance D between the outer side surface of the end cover main body 71 of the motor end cover 7 and the outer side surface of the second connecting portion 73, the mounting portion 31 is fixedly connected with the tool bottom plate 1 through at least two second fasteners 33, and the front side surface of the abutting portion 32 is a vertical plane and is parallel to the central axes of the measurement auxiliary head 4 and the measuring head 51 of the dial indicator 5. The abutting portion 32 is a vertical plane and is parallel to the central axes of the measurement auxiliary head 4 and the measuring head 51 of the dial indicator 5, so that the central axes of the measurement auxiliary head 4 and the measuring head 51 of the dial indicator 5 are located on the diameter of the second connecting portion 73 as long as the second connecting portion 73 of the motor end cover 7 abuts against the front side surface of the abutting portion 32, and the measurement is simpler and more accurate; the length of the abutting part 32 and the design that a gap exists between the lower side surface of the abutting part and the upper side surface of the end cover main body 71 can improve the stability and accuracy of the abutting part in measurement; further, the design that supports by portion 32 unsettled and support by portion 32 and be far below the thickness of installation department 31, be convenient for cut support by portion 32 after fixing end cover baffle 3, make the distance between the preceding terminal surface that supports by portion 32 and the axis of measuring auxiliary head 4 and micrometer 5 measuring head 51 more be close to the outer radius of second connecting portion 73 to improve this external diameter measurement equipment's precision. The second fastening member 24 is a socket head cap screw or a flat head screw.
Further, a 485 output interface or a wireless transmitter for transmitting the measurement data is arranged on the dial indicator 5. Above-mentioned 485 output interface or wireless transmitter's design can be with the data transmission who records for the computer, can save the artifical process of looking over 5 numerical values of amesdial, in the rated value that the data that record prestores in the computer, motor end cover 7 is qualified product, exceed the rated value of predetermineeing in the computer when the data that measure, this motor end cover 7 that measures is unqualified product, can set up the computer and send sound or light signal suggestion operator and take out unqualified product, it is further, can also make statistics of measured data, make the trend graph, thereby the trend of fine prejudgement lathe, prevent that the lathe damages suddenly and lead to the work piece unqualified.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes in the structure, shape and principle of the invention are intended to be covered by the protection scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides an outer diameter measurement equipment of motor end cover which characterized in that: the tool comprises a tool bottom plate (1) and two tool baffles (2), wherein the two tool baffles (2) are arranged in parallel and are fixedly connected with the left side and the right side of the tool bottom plate (1) respectively, the end cover baffles (3) capable of abutting against the second connecting part (73) of a motor end cover (7) are arranged at the rear end of the tool bottom plate (1), a measurement auxiliary head (4) capable of abutting against the second connecting part (73) of the motor end cover (7) is transversely arranged in the middle of one tool baffle (2), a dial indicator (5) is transversely arranged in the middle of the other tool baffle (2), a measuring head (51) of the dial indicator (5) extends out of the inner side surface of the tool baffle (2) and can abut against the second connecting part (73) of the motor end cover (7), the measurement auxiliary head (4) and the measuring head (51) of the dial indicator (5) are positioned on the same straight line, the distance between the central axis of the measuring head (51) of the measuring auxiliary head (4) and the dial indicator (5) and the end cover baffle (3) is equal to the outer radius of the second connecting part (73) of the motor end cover (7).
2. The outer diameter measuring device of the motor end cover according to claim 1, wherein: the tool bottom plate is characterized in that a plurality of transverse grooves (11) are formed in the upper side face of the tool bottom plate (1) at intervals along the longitudinal direction, and the tool bottom plate (1) is transversely penetrated through the transverse grooves (11).
3. The outer diameter measuring device of the motor end cover according to claim 2, wherein: the width and the depth of all the transverse grooves (11) are equal, and the distance between every two adjacent transverse grooves (11) is equal.
4. The outer diameter measuring device of the motor end cover according to claim 1, wherein: the inner ends of the auxiliary measuring head (4) and the measuring head (51) are both inwards shrunk to form a contact (6), the inner end of the contact (6) can abut against a second connecting part (73) of the motor end cover (7), the thickness of the inner end of the contact (6) is less than or equal to 3mm, and the length L1 of the contact (6) is greater than or equal to the distance D between the outer side surface of the end cover body (71) of the motor end cover (7) and the outer side surface of the second connecting part (73).
5. The outer diameter measuring device of the motor end cover according to claim 4, wherein: the contact (6) is cylindrical or conical with a small inner part and a large outer part, and the inner end surface of the contact (6) is a spherical surface.
6. The outer diameter measuring apparatus of a motor end cover according to any one of claims 1 to 5, wherein: the middle parts of two frock baffles (2) all are equipped with along horizontal mounting hole (21) that run through it, and the diameter of two mounting hole (21) is the same, all is equipped with locating hole (22) with mounting hole (21) intercommunication along vertical direction on the up end of two frock baffles (2), be equipped with in locating hole (22) with the fixed first fastener (24) of dead lever (52) of corresponding measurement auxiliary head (4) or amesdial (5).
7. The outer diameter measuring device of the motor end cover according to claim 6, wherein: the lower tip of locating hole (22) is equipped with setting element (23), the lower tip of setting element (23) is equipped with lateral wall complex arcwall face (231) with the supplementary head of measurement (4) or amesdial (5) dead lever (52) that correspond, the upper end of locating hole (22) is equipped with the internal thread, the upper end threaded connection of first fastener (24) and locating hole (22), first fastener (24) can push down setting element (23) and will measure supplementary head (4) or amesdial (5) dead lever (52) and fix.
8. The outer diameter measuring device of the motor end cover according to claim 7, wherein: be equipped with constant head tank (221) along vertical direction on the lateral wall of locating hole (22), the shaping has protruding (232) of location with constant head tank (221) complex on the lateral wall of setting element (23), location arch (232) can insert in constant head tank (221) and reciprocate along constant head tank (221).
9. The outer diameter measuring apparatus of a motor end cover according to any one of claims 1 to 5, wherein: end cover baffle (3) are including shaping installation department (31) and support portion (32) as an organic whole, support portion (32) are located the front end of installation department (31) and support the preceding terminal surface of portion (32) and can support with the lateral wall of second connecting portion (73) of motor end cover (7) and support, there is the clearance between the downside of support portion (32) and the last side of end cover main part (71), length L2 who supports portion (32) is greater than distance D between end cover main part (71) lateral surface of motor end cover (7) and second connecting portion (73) lateral surface, installation department (31) and frock bottom plate (1) link firmly through two at least second fasteners (33), the leading flank that supports portion (32) is vertical plane and is on a parallel with the axis of measuring auxiliary head (4) and amesdial (5) measuring head (51).
10. The outer diameter measuring apparatus of a motor end cover according to any one of claims 1 to 5, wherein: and a 485 output interface or a wireless transmitter for transmitting the measurement data is arranged on the dial indicator (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110772551.XA CN113607027A (en) | 2021-07-08 | 2021-07-08 | Outer diameter measuring equipment of motor end cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110772551.XA CN113607027A (en) | 2021-07-08 | 2021-07-08 | Outer diameter measuring equipment of motor end cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113607027A true CN113607027A (en) | 2021-11-05 |
Family
ID=78304214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110772551.XA Pending CN113607027A (en) | 2021-07-08 | 2021-07-08 | Outer diameter measuring equipment of motor end cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113607027A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607372A (en) * | 2012-03-16 | 2012-07-25 | 江苏欧翔机车有限公司 | Piston skirt detecting device |
| CN104132601A (en) * | 2014-08-23 | 2014-11-05 | 永济新时速电机电器有限责任公司 | Clamping plate outside diameter dial indicator |
| CN206248000U (en) * | 2016-12-02 | 2017-06-13 | 上海精智实业有限公司 | A kind of outside diameter detects instrument |
| CN107063048A (en) * | 2017-06-26 | 2017-08-18 | 江苏三能动力总成有限公司 | The method that piston group portion's size detection is detected with cubing and using the cubing |
| CN208366250U (en) * | 2018-07-27 | 2019-01-11 | 东旭集团有限公司 | Detector for outer diameter error measuring device |
| US20190145749A1 (en) * | 2017-10-09 | 2019-05-16 | Gagemaker, Lp | Automated dynamic dimensional measurement systems and methods |
| CN210293064U (en) * | 2019-08-14 | 2020-04-10 | 上海久日机械有限公司 | Measuring tool for motor end cover spigot diameter |
| CN111059985A (en) * | 2019-11-21 | 2020-04-24 | 陕西法士特齿轮有限责任公司 | Disc gear spline addendum circle diameter measurement gauge and method |
| CN111692950A (en) * | 2020-07-27 | 2020-09-22 | 广州大学 | Device and method for measuring outer diameter of thin-wall bearing ring |
-
2021
- 2021-07-08 CN CN202110772551.XA patent/CN113607027A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607372A (en) * | 2012-03-16 | 2012-07-25 | 江苏欧翔机车有限公司 | Piston skirt detecting device |
| CN104132601A (en) * | 2014-08-23 | 2014-11-05 | 永济新时速电机电器有限责任公司 | Clamping plate outside diameter dial indicator |
| CN206248000U (en) * | 2016-12-02 | 2017-06-13 | 上海精智实业有限公司 | A kind of outside diameter detects instrument |
| CN107063048A (en) * | 2017-06-26 | 2017-08-18 | 江苏三能动力总成有限公司 | The method that piston group portion's size detection is detected with cubing and using the cubing |
| US20190145749A1 (en) * | 2017-10-09 | 2019-05-16 | Gagemaker, Lp | Automated dynamic dimensional measurement systems and methods |
| CN208366250U (en) * | 2018-07-27 | 2019-01-11 | 东旭集团有限公司 | Detector for outer diameter error measuring device |
| CN210293064U (en) * | 2019-08-14 | 2020-04-10 | 上海久日机械有限公司 | Measuring tool for motor end cover spigot diameter |
| CN111059985A (en) * | 2019-11-21 | 2020-04-24 | 陕西法士特齿轮有限责任公司 | Disc gear spline addendum circle diameter measurement gauge and method |
| CN111692950A (en) * | 2020-07-27 | 2020-09-22 | 广州大学 | Device and method for measuring outer diameter of thin-wall bearing ring |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103567815B (en) | Based on the test of numerical control machine tool cutting Thermal Error and the evaluation method of milling aperture | |
| CN101607366B (en) | Processing method of fuel valve hole of marine diesel engine cylinder cover | |
| CN109551185B (en) | Processing technology of upper disc or lower disc triangle of circular knitting machine | |
| CN107321894B (en) | Multi-tooth online detection device and detection method for precision forging of straight bevel gear | |
| CN111412839B (en) | Vertical milling cutter line laser on-machine wear state detection experiment table and detection method | |
| CN108067838B (en) | Method for processing inner hole key groove | |
| CN113551608B (en) | Profile measuring device and method for multi-cone-section deep-hole part | |
| CN112207627A (en) | Automatic compensation device and compensation method for tool wear of numerical control machining center | |
| CN113607027A (en) | Outer diameter measuring equipment of motor end cover | |
| CN203765379U (en) | Aligning device for machining key slots with strict phase requirements in inner hole of gear | |
| CN209682270U (en) | A kind of cloth cutter of good positioning effect | |
| CN208496739U (en) | A kind of cutter measurement device of indexable insert tip, throw away tip grinding machine | |
| CN206990472U (en) | A kind of PRECISION-FORGED STRAIGHT BEVEL GEARS on-line measuring device | |
| US20190168326A1 (en) | Electrochemical machining apparatus for gear outline | |
| CN211926792U (en) | Automatic detection device for arc-shaped optical lens | |
| CN109434526B (en) | Torsion beam hub installation face end face mills special machine | |
| CN209588934U (en) | The inside diameter measurement tool of workpiece with the interference of axis class | |
| CN107328790A (en) | A kind of PRECISION-FORGED STRAIGHT BEVEL GEARS on-line measuring device and detection method | |
| CN210255403U (en) | Device for completing automatic compensation of milling height of product | |
| CN102513579B (en) | Processing tool and processing method of inner hole of oil pump hole for engine body | |
| CN207577524U (en) | A kind of novel angular milling head for processing compound angle inclined hole | |
| CN112658803A (en) | Milling head machining mechanism with temperature detection function and temperature detection compensation method thereof | |
| CN219684049U (en) | Large-scale spline shaft sleeve processing tool for correcting deformation of cantilever main shaft | |
| CN215865014U (en) | Bevel gear pair mounting distance correcting gauge | |
| CN110587345B (en) | Multi-station clamping tool for machining planetary wheel shafts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |