CN112665629A

CN112665629A - Motor rotary transformer mechanical zero setting tool

Info

Publication number: CN112665629A
Application number: CN202011604688.6A
Authority: CN
Inventors: 李磊; 魏玉珍; 吕小科
Original assignee: Suzhou Lvkon Transmission S&T Co Ltd
Current assignee: Suzhou Lvkon Transmission S&T Co Ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-04-16
Anticipated expiration: 2040-12-29
Also published as: CN112665629B

Abstract

The invention provides a motor rotary transformer mechanical zero setting tool which is good in universality. The positioning block is used for positioning the step of the rotary-change mounting hole of the motor end cover for radial centering setting, a central ring is arranged in the central area of the positioning block, the areas of the outward end surface of the central ring are respectively concave to form a first bearing through hole and a second spring positioning groove, a bearing is arranged in the first bearing through hole, a compression spring is arranged in the second spring positioning groove, it also comprises a connecting rod, a knob screw, an adjusting nut, a hand crank handle and a hollow shaft, wherein the connecting rod comprises a central sleeve and two side convex rod parts, the center of the center sleeve is axially provided with a center through hole with a key, the outer end of the compression spring is arranged in a way of being jacked on the rear end face of the center sleeve, the center of the hollow shaft is provided with a second center through hole, the length direction of the periphery of the hollow shaft is provided with an inwards concave key groove, and the rear end region of the hollow shaft is provided with a thread section.

Description

Motor rotary transformer mechanical zero setting tool

Technical Field

The invention relates to the technical field of rotary transformer zero setting, in particular to a mechanical zero setting tool for a rotary transformer of a motor.

Background

At present, a motor rotation zero-setting tool generally adopts a specific adapter according to the output end form of a motor shaft, and then the adapter is utilized to rotate the motor shaft so as to change the angle of a rotation rotor and achieve the zero-setting purpose. Therefore, the adapters required by the motors are different, so that the universality of the zero setting tool is relatively poor.

Disclosure of Invention

Aiming at the problems, the invention provides a motor rotary transformer mechanical zero setting tool which is good in universality.

The utility model provides a motor rotary transformer mechanical zero setting frock which characterized in that: the motor end cover positioning device comprises a positioning block, wherein the positioning block is used for positioning steps of a rotary-deformation mounting hole of a motor end cover to perform radial centering setting, a central area of the positioning block is provided with a central ring, areas of the outward end face of the central ring are respectively concave to form a first bearing through hole and a second spring positioning groove, a bearing is arranged in the first bearing through hole, a compression spring is arranged in the second spring positioning groove, the motor end cover positioning device further comprises a connecting rod, a knob screw, an adjusting nut, a hand crank handle and a hollow shaft, the connecting rod comprises a central sleeve and two side cam rod parts, the central axial direction of the central sleeve is provided with a central through hole with a key, the outer end of the compression spring is jacked on the rear end face of the central sleeve to be arranged, the center of the hollow shaft is provided with a second central through hole, the peripheral length direction of, the hollow shaft is inserted in the rear of the central through hole, the front end of the hollow shaft is inserted and positioned in the inner ring of the bearing, a central hole of the hand crank is provided with a key structure, the hand crank is sleeved in the rear end area of the hollow shaft and is arranged in an opposite concave key groove, an adjusting nut is in threaded connection and sleeved in a rear end threaded section of the hollow shaft, a screw end of the knob screw penetrates through a second central through hole of the hollow shaft and is fixedly connected to a central concave threaded hole of a motor shaft in a threaded mode, the outer end of the side convex rod part is provided with a long slotted hole penetrating in the thickness direction, the inner end of the screw penetrates through the long slotted hole and is inserted in a locking waist-shaped groove in the position corresponding to the annular cloth of the rotary transformer stator, and the.

It is further characterized in that:

the rear end face of the central sleeve is provided with a spring positioning boss, and the outer end of the compression spring is sleeved on the spring positioning boss and is jacked on the rear end face of the central sleeve, so that reliable and stable positioning is ensured;

a front convex positioning ring is arranged at the position, facing the step of the rotary-change mounting hole of the motor end cover, of the outer ring of the positioning block, and the front convex positioning ring is embedded in the step of the rotary-change mounting hole to ensure centering arrangement;

the connecting parts of the central ring and the outer ring of the positioning block are a plurality of connecting rods, and the screw rods penetrate through gap regions between the adjacent connecting rods during assembly.

A method for using a motor rotary transformer mechanical zero setting tool is characterized in that a limiting block of a zero setting part of a rotary transformer stator is matched with a step of a rotary transformer mounting hole on a motor end cover, namely the tool is concentric with a rotary transformer and a motor shaft at the moment, a screw is inserted into a locking waist-shaped groove of the rotary transformer stator and then locked, the screwing depth of an adjusting nut on a hollow shaft is adjusted until the end face of the screw is contacted with the bottom face of the rotary transformer mounting hole on the motor end cover, a compression spring has a certain compression amount in the axial direction at the moment, and then the knob screw penetrates through the hollow shaft and is screwed into a central concave threaded hole on the motor shaft to prepare for finishing work;

when the zero setting step is carried out, the knob screw rod is twisted, the motor shaft can be driven to rotate, the reading on the resolver can also change at the moment, the knob screw rod is stopped to be twisted until the reading on the resolver is close to the required resolver value, then the hand-cranking handle is finely adjusted, due to the effect of the key slot, the hollow shaft and the connecting rod can synchronously rotate along with the hand-cranking handle, the screw rod is locked on the connecting rod at the moment, the screw rod rotates by taking the hollow shaft as the center, so that the resolver stator iron core is pushed to circumferentially rotate, the reading on the resolver is finely adjusted at the moment, and the fine adjustment of the hand-cranking handle is stopped until the reading on the resolver is; and keeping the position of the newly-screwed stator unchanged, then, penetrating a locking waist-shaped groove on the core of the screwed stator by a plurality of screws and screwing the screws into a mounting threaded hole on the motor end cover, locking the screwed stator at the moment, wherein the position is the target position required by the screwing zeroing, and after the screwing zeroing is finished, taking down the tool and mounting all mounting screws of the screwed stator in place.

After the invention is adopted, the mounting commonality characteristic of the rotary transformer rotor is utilized, the knob screw rod is matched with the central concave threaded hole on the motor shaft to rotate the motor shaft, thereby changing the angle of the rotary transformer rotor, being suitable for the zero setting requirements of different specifications of different types of motors and having more universality; the radial position of the screw rod on the long slotted hole can be adjusted, and the screw rods are embedded in the locking waist-shaped groove of the rotary transformer stator to push the stator to rotate, so that the fixture meets the zero setting requirements of the rotary transformer stators with different sizes and specifications; the adjusting nut is adjusted so as to change the axial compression amount of the compression spring, and the requirements of different motors on rotary change and zero adjustment of different axial installation depths can be met; it makes the commonality of frock good.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention applied to a rotary transformer zeroing;

the names corresponding to the sequence numbers in the figure are as follows:

the positioning block 1, a central ring 11, a first bearing through hole 12, a second spring positioning groove 13, an outer ring 14, a front convex positioning ring 15, a connecting rod 16, a bearing 2, a compression spring 3, a connecting rod 4, a central sleeve 41, a side convex rod part 42, a central through hole 43, a spring positioning boss 44, a long slotted hole 45, a screw rod 5, a nut 6, a hollow shaft 7, a second central through hole 71, an inner concave key groove 72, a thread section 73, an adjusting nut 8, a hand-cranking handle 9, a knob screw rod 10, a screw rod 101, a knob end 102

Motor end cover 100, motor shaft 200, rotation stator 300, locking waist-shaped groove 301, rotation rotor 400.

Detailed Description

A motor rotary transformer mechanical zero setting tool is shown in figures 1-2: the motor end cover positioning device comprises a positioning block 1, wherein the positioning block 1 is used for positioning steps of a rotary-deformation mounting hole of a motor end cover 100 for radial centering setting, a central ring 11 is arranged in the central area of the positioning block 1, the outward end surface area of the central ring 11 is respectively inwards concave to form a first bearing through hole 12 and a second spring positioning groove 13, a bearing 2 is arranged in the first bearing through hole 11, a compression spring 3 is arranged in the second spring positioning groove 13, the motor end cover positioning device further comprises a connecting rod 4, a knob screw 10, an adjusting nut 8, a hand-cranking handle 9 and a hollow shaft 7, the connecting rod 4 comprises a central sleeve 41 and convex rod parts 42 at two sides, a central through hole 43 with a key is axially arranged in the center of the central sleeve 41, the outer end of the compression spring 3 is arranged in a manner of being abutted against the rear end surface of the central sleeve 41, a second, the rear end region of the hollow shaft 7 is provided with a threaded section 73, the hollow shaft 7 is inserted into the rear end of the central through hole 43, the front end of the hollow shaft 7 is inserted into and positioned on the inner ring of the bearing 2, the central hole of the hand handle 9 is provided with a key structure, the hand handle 9 is sleeved in the rear end region of the hollow shaft 7 and is aligned with the concave key groove 72, the adjusting nut 8 is in threaded connection and is sleeved in the threaded section 73 at the rear end of the hollow shaft 7, the end of a screw rod 101 of the knob screw rod 10 penetrates through the second central through hole 71 of the hollow shaft 7 and is fixedly connected to the central concave threaded hole of the motor shaft 200 in a threaded manner, the outer end of the side protruding rod part 42 is provided with a long slotted hole 45 penetrating in the thickness direction, the inner end of the screw rod 5 penetrates through the long slotted hole 45 and is inserted into a.

The rear end face of the central sleeve 41 is provided with a spring positioning boss 44, and the outer end of the compression spring 3 is sleeved on the spring positioning boss 44 and is jacked on the rear end face of the central sleeve 41, so that reliable and stable positioning is ensured;

a front convex positioning ring 15 is arranged at the position, facing the step of the rotary-change mounting hole of the motor end cover 100, of the outer ring 14 of the positioning block 1, and is embedded in the step of the rotary-change mounting hole to ensure centering arrangement;

the connecting part of the central ring 11 and the outer ring 14 of the positioning block 1 is a plurality of connecting rods 16, and the screw 5 penetrates through the gap area between the adjacent connecting rods 16 when being assembled.

A method for using a motor rotary transformer mechanical zero setting tool comprises the steps of matching a limiting block of a zero setting part of a rotary transformer stator with steps of a rotary transformer mounting hole on a motor end cover, namely ensuring that the tool is concentric with a rotary transformer and a motor shaft at the moment, then inserting a screw into a locking waist-shaped groove of the rotary transformer stator, locking, adjusting the screwing depth of an adjusting nut on a hollow shaft until the end surface of the screw is contacted with the bottom surface of the rotary transformer mounting hole on the motor end cover, then enabling a compression spring to have a certain compression amount in the axial direction, and then screwing the rotary knob screw into a central concave threaded hole on the motor shaft after penetrating through the hollow shaft to prepare for finishing work;

The working principle is that by utilizing the installation commonality characteristic of the rotary transformer rotor, the knob screw rod is matched with the central concave threaded hole on the motor shaft to rotate the motor shaft, so that the angle of the rotary transformer rotor is changed, the zero setting requirement of rotary transformers of different specifications of different types of motors is met, and the universal rotary transformer has higher universality; the radial position of the screw rod on the long slotted hole can be adjusted, and the screw rods are embedded in the locking waist-shaped groove of the rotary transformer stator to push the stator to rotate, so that the fixture meets the zero setting requirements of the rotary transformer stators with different sizes and specifications; the adjusting nut is adjusted so as to change the axial compression amount of the compression spring, and the requirements of different motors on rotary change and zero adjustment of different axial installation depths can be met; it makes the commonality of frock good.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A mechanical zero-adjusting tool for a motor resolver, characterized in that: it comprises a positioning block, and the positioning block is used for positioning the step of the resolver mounting hole of the motor end cover to perform radial centering setting, and the positioning block is The central area is provided with a central ring, and the outer end surface area of the central ring is concave to form a first bearing through hole and a second spring positioning groove, the first bearing through hole is provided with a bearing, and the second spring positioning A compression spring is arranged in the groove, which also includes a connecting rod, a knob screw, an adjusting nut, a hand crank, and a hollow shaft. The connecting rod includes a central sleeve and two convex rods. A central through hole with a key is arranged in the direction, the outer end of the compression spring is mounted on the rear end surface of the central sleeve, and the center of the hollow shaft is provided with a second central through hole, and the hollow shaft is provided with a second central through hole. An inner concave keyway is arranged in the length direction of the outer circumference, a threaded section is arranged at the rear end area of the hollow shaft, the hollow shaft is inserted after the central through hole, and the front end is inserted and positioned on the inner ring of the bearing. The central hole of the hand crank handle is provided with a key structure, the hand crank handle is sleeved on the rear end area of the hollow shaft, and the concave key grooves are arranged in alignment, and the adjusting nut is threadedly connected and sleeved on the rear end threaded section of the hollow shaft, After the screw end of the knob screw penetrates the second central through hole of the hollow shaft, it is threadedly fixed to the central concave threaded hole of the motor shaft. The inner end of the screw rod penetrates the long slot hole and is inserted into the locking waist-shaped groove at the corresponding position of the ring cloth of the rotary stator. The position of the screw rod corresponding to the long slot hole is locked by the upper and lower nuts.

2 . The zero-adjusting tool for a motor resolver according to claim 1 , wherein the rear end surface of the central sleeve is provided with a spring positioning boss, and the outer end of the compression spring is sleeved on the spring. 3 . The positioning boss is top mounted on the rear end face of the central sleeve.

3. The mechanical zero-adjustment tool for a motor resolver according to claim 1, wherein the outer ring of the positioning block is provided with a front convex positioning ring at the position of the step of the resolver mounting hole of the motor end cover, so The front convex positioning ring is embedded in the step of the rotary installation hole.

4 . The zero-adjusting tool for a motor resolver according to claim 1 , wherein the connecting parts of the center ring and the outer ring of the positioning block are several connecting rods, and the screw rods penetrate adjacent adjacent rods during assembly. 5 . The gap area between the connecting rods is arranged.

5. A method of using a mechanical zero-adjusting tool for a motor resolver, characterized in that, firstly, the limit block of the zero-adjusting part of the resolver stator is matched with the step of the resolver installation hole on the motor end cover, that is, the tooling and the screw are at this time. The transformer and the motor shaft are guaranteed to be concentric, then insert the screw rod into the locking waist-shaped groove of the rotary transformer stator, then lock the position, and adjust the screwing depth of the adjusting nut on the hollow shaft until the screw end face and the motor end cover. At this time, the compression spring will have a certain amount of compression in the axial direction, and then the knob screw is screwed through the hollow shaft into the central concave threaded hole on the motor shaft, and the preparation work is completed;

When the zero adjustment step is in progress, twist the knob screw, the motor shaft will be rotated and the reading on the resolver will also change accordingly, until the reading on the resolver is close to the required resolver value, stop twisting the knob screw, then Fine-tuning the hand crank, due to the function of the keyway, the hollow shaft and the connecting rod will rotate synchronously with the hand crank, and at this time the screw is locked on the connecting rod, and the screw rotates around the hollow shaft, thereby pushing the rotary stator iron core Rotate in the circumferential direction. At this time, the reading on the resolver is fine-tuned, until the reading on the resolver is the required target value, stop fine-tuning the hand crank; keep the position of the stator that has just been rotated, and then use several screws to pass through the resolver. The locking waist-shaped groove on the stator iron core is screwed into the installation threaded hole on the motor end cover, and the rotary stator is locked at this time, then this position is the target position required for the rotary zero adjustment. After the rotary zero adjustment is completed, take Remove the tooling and install all the mounting screws of the resolver stator in place.