CN214223909U - Auxiliary measurement jig - Google Patents

Abstract

The utility model provides an auxiliary measuring tool for the straightness and concentricity that hang down of auxiliary measuring motor end cover, center pin, cover on the center pin are located including the mountable to the yaw appearance, and epaxial expansion holding ring and tapering stopper are located to the center pin, and the center pin includes first link, second link and first retaining ring, and the bearing room cover of motor end cover is located on the expansion holding ring, and the butt is on the step face that first link and first retaining ring formed. The utility model provides an auxiliary measuring tool can install the motor end cover and fix to the yaw appearance, utilizes the micrometer to accomplish the concentricity and the measurement of the straightness type position tolerance size that hangs down to the motor end cover, improves the measuring precision by a wide margin, easy operation, measurement convenience; after the measurement is completed, the motor end cover can be easily separated from the motor end cover, the disassembly is convenient, the bearing can be recycled, the problem that the bearing needs to be scrapped in the traditional measurement mode is solved, the measurement cost is saved, and the measurement efficiency and the measurement precision are improved.

Description

Auxiliary measurement jig

Technical Field

The utility model belongs to the technical field of the motor processing technique and specifically relates to an auxiliary measurement tool that special end cover of motor used is related to.

Background

In the production and processing process of the motor, a machine tool is needed to further process the finished end cover semi-finished product, and before the end cover is processed, the concentricity and the perpendicularity of the end cover are needed to be measured so as to ensure the processing composite design requirement of the end cover. The traditional end cover semi-finished product needs to be provided with a bearing for material object measurement, the measurement process is complex, the measurement time is long, and the bearing needs to be scrapped after being assembled. Even so, the tolerance accuracy of the measurements that can be made to the end caps of the motor is 0.02 mm.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the end cover of current motor and need install the bearing and just can measure its concentricity and straightness that hangs down in the course of working, and measuring process is complicated, man-hour long to all scrap the bearing after measuring at every turn, the shortcoming that measurement accuracy is low provides an auxiliary measurement tool.

The utility model provides a technical scheme that its technical problem adopted is: an auxiliary measuring jig is used for auxiliary measurement of the verticality and the concentricity of a motor end cover and comprises a center shaft, an expansion positioning ring and a taper limiting block, wherein the center shaft can be installed on a deflection instrument, the expansion positioning ring and the taper limiting block are sleeved on the center shaft, the center shaft comprises a first connecting end and a second connecting end which can be fixedly connected with the deflection instrument, and a first positioning ring is arranged between the first connecting end and the second connecting end, the expansion positioning ring is fixed on the outer side of the first positioning ring, the taper limiting block is fixed on the outer side of the second connecting end and is mutually abutted to the expansion positioning ring, and a bearing chamber of the motor end cover is sleeved on the expansion positioning ring and is abutted to a step surface formed by the first connecting end and the first positioning ring.

Furthermore, an annular oblique cutting surface is arranged on one side, close to the first connecting end, of the outer wall of the first positioning ring, and an annular plain section connected with the annular oblique cutting surface is arranged on one side, close to the second connecting end, of the outer wall of the first positioning ring.

Specifically, the expanded retaining ring has a width greater than a width of the first retaining ring.

Further, the inner wall of the expansion positioning ring is provided with a first inclined plane abutted against the annular inclined plane, a first annular plane attached to the annular plain plane and a second inclined plane abutted against the taper limiting block.

Specifically, the expansion positioning ring is distributed with 4-12 notches along the circumference.

Specifically, the first chamfer and the annular chamfer have the same taper.

Furthermore, the taper limiting block comprises a cylindrical body and a conical part which is arranged at one end of the cylindrical body and can be abutted to the expansion positioning ring, a conical surface which is mutually abutted to the second oblique cutting surface of the expansion positioning ring is formed on the outer wall of the conical part, and the taper of the conical surface is consistent with that of the second oblique cutting surface.

Specifically, the width of the conical surface is larger than the width of the second chamfer surface.

Furthermore, the outer wall of the second connecting end of the central shaft is provided with an external thread, and the mounting nut is sleeved on the second connecting end and abuts against the end part of the taper limiting block on the expansion positioning ring.

Specifically, the end of the first connecting end and the end of the second connecting end are both provided with a connecting hole fixedly connected with a center thimble of the yaw meter.

The utility model provides an assistant measuring tool's beneficial effect lies in: the motor end cover can be installed and fixed on the deflection instrument, the measurement of the concentricity and the verticality type position tolerance size of the motor end cover is completed by using a micrometer, the measurement precision can be greatly improved through the measurement of the micrometer, and the measurement tolerance precision is improved to 0.005mm from 0.02 mm; the auxiliary measuring jig can conveniently fix the motor end cover on the deflection instrument for measurement, and is simple to operate and convenient to measure; after the measurement is completed, the motor end cover can be easily separated from the motor end cover, the motor end cover is convenient to detach, the motor end cover can be recycled, the traditional measurement mode of fixing the motor end cover by using a bearing is replaced, the problem that the bearing needs to be scrapped in the traditional measurement mode is avoided, the measurement cost is saved, and the measurement efficiency and the measurement precision are improved.

Drawings

Fig. 1 is a schematic full-section view of a motor end cover sleeved on an auxiliary measuring jig provided by the utility model;

fig. 2 is a schematic full-sectional view of a central shaft of an auxiliary measuring jig provided by the present invention;

fig. 3 is a schematic full-sectional view of an expansion positioning ring of an auxiliary measuring jig according to the present invention;

fig. 4 is a side view of an expansion positioning ring of an auxiliary measuring tool provided by the present invention;

fig. 5 is a side view of the taper limiting block of the auxiliary measuring jig provided by the utility model.

In the figure: 100-auxiliary measuring jig, 10-central shaft, 11-first connecting end, 12-second connecting end, 121-external thread, 13-first positioning ring, 131-annular inclined plane, 132-annular plain section, 14-step plane, 15-connecting hole, 20-expansion positioning ring, 21-first inclined plane, 22-first annular plane, 23-second inclined plane, 24-notch, 241-strip-shaped groove, 242-round hole, 30-taper limiting block, 31-cylindrical body, 32-conical part, 321-conical plane, 40-mounting nut, 90-motor end cover, 91-bearing chamber, 911-first abutting plane, 912-second abutting plane, 901-first measuring position, 902-second measuring position, 903-third measurement position, L1-first orientation ring width, L2-expanded orientation ring width, L3-second chamfer width, L4-strip groove width, L5-cone surface width.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 5, an auxiliary measuring tool 100 according to the present invention is provided. The utility model provides an auxiliary measuring tool 100 can be used for auxiliary measuring motor end cover 90 to make. Adopt the utility model provides an auxiliary measuring tool 100 measures and can replace the fixed measuring mode of adopting the bearing, and the straightness and the concentricity of hanging down that motor end cover 90 was measured in cooperation micrometer and beat appearance cooperation still can improve measuring accuracy.

Further, as shown in fig. 1, the utility model provides an auxiliary measuring tool 100 includes center pin 10 that can be installed on the yaw meter, expansion positioning ring 20 and tapering stopper 30 that the cover was located on center pin 10. The motor end cover 90 is sleeved on the central shaft 10, the motor end cover 90 is fixed through the expansion positioning ring 20 and the taper limiting block 30 and then placed on the deflection instrument, three micrometers are correspondingly arranged on the deflection instrument, each micrometer is respectively abutted against three measuring positions 901, 902 and 903 of the motor end cover 90, and the three measuring positions are respectively located at a seam allowance and a central hole of the motor end cover 90, so that the verticality and the concentricity of the motor end cover 90 are measured by utilizing the micrometers.

Specifically, as shown in fig. 2, the central shaft 10 of the auxiliary measuring tool 100 includes a first connecting end 11 capable of being fixedly connected to the deflection instrument, a second connecting end 12, and a first positioning ring 13 disposed between the first connecting end 11 and the second connecting end 12. The first connecting end 11, the second connecting end 12 and the first positioning ring 13 of the central shaft 10 are integrally formed, and the first positioning ring 13 is disposed in the middle of the central shaft 10 and is used for sleeving the expansion positioning ring 20. The end portions of the two sides of the first connection end 11 and the second connection end 12 need to be fixed at the center thimble of the deflection instrument, so that the end portion of the first connection end 11 and the end portion of the second connection end 12 are both provided with a connection hole 15 fixedly connected with the center thimble of the deflection instrument. The center shaft 10 is integrally fixed to the yaw rate measuring instrument through the connection holes 15 provided at both ends.

As shown in fig. 1, the expanded positioning ring 20 is fixed to the outer side of the first positioning ring 13, and the tapered stopper 30 is fixed to the outer side of the second connecting end 12 and abuts against the expanded positioning ring 20. The taper limiting block 30 is abutted with the expansion positioning ring 20 during assembly, and the expansion positioning ring 20 is expanded through the abutment for limiting matching. The bearing chamber 91 of the motor end cover 90 is sleeved on the expansion positioning ring 20 and abuts against the step surface 14 formed by the first connection end 11 and the first positioning ring 13. The bearing chamber 91 of the motor cover 90 has a first contact surface 911 and a second contact surface 912 that are perpendicular to each other, and the first contact surface 911 contacts the step surface 14 of the center shaft 10 when the bearing chamber 91 is fitted to the expansion positioning ring 20. The second contact surface 912 contacts the outer wall of the expansion positioning ring 20 when the bearing chamber 91 is fitted to the expansion positioning ring 20. After the expanded positioning ring 20 is expanded outward by the tapered stopper 30 provided at the second connection end 12 of the center shaft 10, the bearing housing 91 of the motor cover 90 is fixed to the outer side of the first positioning ring 13 of the center shaft 10.

Further, as shown in fig. 2, the utility model provides an auxiliary measuring tool 100, wherein the outer wall of the first positioning ring 13 is provided with an annular chamfer 131 on one side close to the first connecting end 11, and an annular flat tangent plane 132 connected with the annular chamfer 131 is provided on one side close to the second connecting end 12. The annular chamfer 131 has a taper, wherein the axial diameter of the annular chamfer 131 of the first retainer ring 13 decreases from the first connection end 11 toward the second connection end 12. The height of the annular chamfered surface 131 gradually decreases from the first connection end 11 to the second connection end 12. The annular flat section 132 has a horizontal circular ring structure, wherein the axial diameter of the annular flat section 132 of the first positioning ring 13 is constant. When the expansion positioning ring 20 is sleeved on the central shaft 10, it needs to enter the first positioning ring 13 from one side of the second connecting end 12 and abut against the annular chamfered surface 131 to realize locking.

Specifically, as shown in fig. 1, the expanded retaining ring 20 is held in place by the first retaining ring 13 of the central shaft 10 by means of a tapered stop 30 at the second attachment end 12, such that the expanded retaining ring 20 has a width L2 greater than the width L1 of the first retaining ring 13. The expansion positioning ring 20 reserves a width for the taper stopper 30 to abut against.

Further, as shown in fig. 3, the present invention provides a full sectional view of the expansion positioning ring 20 in the auxiliary measuring tool 100. The inner wall of the expansion positioning ring 20 is provided with a first chamfer 21 abutting against the annular chamfer 131, a first annular surface 22 abutting against the annular tangent plane 132, and a second chamfer 23 abutting against the taper stopper 30. The first chamfered surface 21 and the first annular surface 22 of the expansion positioning ring 20 are fixed to the first positioning ring 13 of the central shaft 10, wherein the first chamfered surface 21 of the expansion positioning ring 20 has a taper identical to that of the annular chamfered surface 131 of the first positioning ring 13 of the central shaft 10. The first chamfered surface 21 may abut the annular chamfered surface 131 when the expansion positioning ring 20 is fitted over the first positioning ring 13. The second chamfered surface 23 formed on the expansion positioning ring 20 is used to abut against the tapered stop 30 located on the second connection end 12, so that the tapered stop 30 can provide a pushing force to the expansion positioning ring 20 toward the first connection end 11 side, and the expansion positioning ring 20 is urged to expand outward along the circumferential direction.

Further, as shown in FIG. 4, in order to ensure a certain outward elastic deformation of the expansion positioning ring 20 in the circumferential direction, the expansion positioning ring 20 has 4-12 notches 24 distributed along the circumference. In this embodiment, a total of 12 notches 24 are formed in the circumferential surface of the expansion positioning ring 20, and adjacent notches 24 are staggered with respect to each other, and the two adjacent notches 24 are opened in opposite directions. Each notch 24 includes a strip-shaped groove 241 extending from one end wall of the expansion positioning ring 20 toward the first or second chamfered surface 21 or 23 of the other end and a circular hole 242 provided on the first or second chamfered surface 21 or 23, wherein the diameter of the circular hole 242 is 1.6mm, the strip-shaped groove 241 communicates with the circular hole 242, and the width L4 of the strip-shaped groove 241 is 0.8 mm.

Further, as shown in fig. 5, the taper limiting block 30 in the auxiliary measuring jig 100 provided by the present invention comprises a cylindrical body 31 and a conical portion 32 disposed at one end of the cylindrical body 31 and capable of abutting against the expansion positioning ring 20, wherein a conical surface 321 abutting against the second chamfer 23 of the expansion positioning ring 20 is formed on the outer wall of the conical portion 32, and the taper of the conical surface 321 is consistent with the taper of the second chamfer 23. During assembly, one end of the taper stopper 30 having the taper portion 32 is sleeved on the second connecting end 12 toward the first positioning ring 13, and the taper surface 321 of the taper portion 32 is abutted to the expansion positioning ring 20 on the first positioning ring 13. The conical surface 321 is in the same direction as the taper of the second chamfer 23 of the expansion positioning ring 20, and they are attached to each other.

Specifically, as shown in fig. 1, when the tapered stop 30 approaches the first positioning ring 13, it pushes one end of the second chamfered surface 23 of the expanded positioning ring 20 to expand outward along the circumferential direction, and during the expansion, the second chamfered surface 23 of the tapered stop 30 can move a certain distance toward the first positioning ring 13, and in order to ensure a certain elastic space for the expanded positioning ring 20, the tapered stop 30 has a certain adjustment range, and the width L5 of the tapered surface 321 on the tapered stop 30 is greater than the width L3 of the second chamfered surface 23 on the expanded positioning ring 20.

Further, the outer wall of the second connection end 12 of the central shaft 10 is provided with an external thread 121, in order to limit the relative movement of the taper limiting block 30 on the second connection end 12 in the horizontal direction, the auxiliary measuring jig 100 further includes a mounting nut 40 that is sleeved on the second connection end 12 and abuts the end of the taper limiting block 30 on the expansion positioning ring 20, and the mounting nut 40 is locked on the external thread 121 of the second connection end 12.

The utility model provides an auxiliary measuring tool 100's actual assembly measurement process as follows:

in a first step, the expansion positioning ring 20 enters the first positioning ring 13 from the second connecting end 12 side, so that the first chamfered surface 21 of the expansion positioning ring 20 and the annular chamfered surface 131 of the first positioning ring 13 abut against each other.

Secondly, the taper limiting block 30 is sleeved on the second connecting end 12 from one side of the second connecting end 12, and the conical surface 321 on the taper limiting block 30 is abutted against the second inclined cutting surface 23 of the expansion positioning ring 20.

Thirdly, the mounting nut 40 is sleeved on the external thread 121 of the second connecting end 12, so that the mounting nut 40 contacts with one end of the cylindrical body 31 of the taper limiting block 30.

Fourthly, the bearing chamber 91 of the motor end cover 90 is sleeved outside the expansion positioning ring 20 from one side of the first connection end 11, so that the first abutting surface 911 of the bearing chamber 91 and the step surface 14 on the central shaft 10 abut against each other.

Fifthly, the mounting nut 40 is screwed down, the taper limiting block 30 is pushed to move towards one side of the first positioning ring 13, so that the expansion positioning ring 20 is pushed to expand outwards in the circumferential direction, the outer wall of the expansion positioning ring 20 is abutted to the second abutting surface 912 of the bearing chamber 91 of the motor end cover 90, and the expansion positioning ring 20 and the motor end cover 90 are fixed relatively.

Sixthly, the jig 100 which is installed is placed on the deflection instrument, the jig is fixed to a center thimble of the deflection instrument through connecting holes 15 at two ends of the center shaft 10, three micrometers placed on the deflection instrument are respectively abutted to three measuring positions 901, 902 and 903 of the motor end cover 90, the motor end cover 90 is rotated through the deflection instrument, and measuring data are read through the micrometers, so that the concentricity and the verticality of the motor end cover 90 are obtained.

The utility model provides an auxiliary measuring tool 100 can install motor end cover 90 fixed to the yaw appearance, utilizes the micrometer to accomplish the concentricity of motor end cover 90 and the measurement of straightness type position tolerance size of hanging down, can improve the measuring precision by a wide margin through micrometer measurement, promotes the measuring tolerance precision to 0.005mm from 0.02 mm; the auxiliary measuring jig 100 can conveniently fix the motor end cover 90 on the deflection instrument for measurement, and is simple to operate and convenient to measure; after the measurement is completed, the motor end cover 90 can be easily separated from the motor end cover, the motor end cover is convenient to detach, and can be recycled again, the traditional measurement mode that the motor end cover 90 is fixed by using a bearing is replaced, the problem that the bearing needs to be scrapped in the traditional measurement mode is avoided, the measurement cost is saved, and the measurement efficiency and the measurement precision are improved.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. An auxiliary measuring jig is used for auxiliary measurement of the verticality and the concentricity of a motor end cover and is characterized by comprising a central shaft, an expansion positioning ring and a taper limiting block, wherein the central shaft can be mounted on a deflection instrument, the expansion positioning ring and the taper limiting block are sleeved on the central shaft, the central shaft comprises a first connecting end and a second connecting end which can be fixedly connected with the deflection instrument, and a first positioning ring arranged between the first connecting end and the second connecting end, the expansion positioning ring is fixed on the outer side of the first positioning ring, the taper limiting block is fixed on the outer side of the second connecting end and mutually abutted against the expansion positioning ring, and a bearing chamber of the motor end cover is sleeved on the expansion positioning ring and abutted against a step surface formed by the first connecting end and the first positioning ring.

2. The auxiliary measuring jig of claim 1, wherein the outer wall of the first positioning ring is provided with an annular chamfer on a side close to the first connecting end, and an annular plane surface connected with the annular chamfer is arranged on a side close to the second connecting end.

3. The auxiliary measuring fixture of claim 2, wherein the width of the expanded positioning ring is greater than the width of the first positioning ring.

4. The auxiliary measuring jig as claimed in claim 2, wherein the inner wall of the expansion positioning ring is provided with a first chamfer abutting against the annular chamfer, a first annular surface abutting against the annular tangent plane, and a second chamfer abutting against the taper limiting block.

5. The auxiliary measuring fixture of claim 4, wherein the expansion positioning ring has 4-12 notches distributed along the circumference.

6. An auxiliary measuring jig according to claim 4 wherein the first chamfer and the annular chamfer are tapered in unison.

7. The auxiliary measuring jig according to claim 4, wherein the taper limiting block comprises a cylindrical body and a conical portion which is arranged at one end of the cylindrical body and can abut against the expansion positioning ring, a conical surface which abuts against a second chamfered surface of the expansion positioning ring is formed on the outer wall of the conical portion, and the taper of the conical surface is consistent with the taper of the second chamfered surface.

8. An auxiliary measuring jig according to claim 7 wherein the width of the conical surface is greater than the width of the second chamfered surface.

9. The auxiliary measuring jig according to claim 4, wherein the outer wall of the second connecting end of the central shaft is provided with an external thread, and further comprising a mounting nut which is sleeved on the second connecting end and abuts the end of the taper limiting block against the expansion positioning ring.

10. The auxiliary measuring jig according to claim 1, wherein the end of the first connecting end and the end of the second connecting end are provided with connecting holes fixedly connected with a center thimble of the deflection instrument.

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