A device and method for quantitatively coating a rotor seat of a shaft system driving motor

Abstract

The application relates to a kind of device and method for the quantitative glueing of shafting driving motor stator and rotor base, characterized in that: the upper end of the fixed base is coaxially supported with the lower end of the tray, the lower end of the fixed base is connected with the gap between the center hole of the bushing rotating shaft to be glued, the center cylindrical table of the tray is fixed with the bushing rotating shaft through the limiting support; the middle part of the fixed base is provided with a guide hole; the sliding limiting rod is composed of front, middle and tail rod segments, the front rod segment is fixed with the lower part of the positioning rod, the horizontal rod part of the middle rod segment and the tail rod segment are slidingly matched with the guide hole, the spring is sleeved on the tail rod segment outside the fixed base; the middle rod segment of the scraper is fixed with the lower end of the vertical rod part of the middle rod segment, and extends into the inner cavity of the bushing rotating shaft, the highest point of the blade is provided with a certain gap with the inner cavity surface of the bushing rotating shaft; the positioning bearing installed on the upper end of the positioning rod is in contact with the outer ring surface of the motor stator supported in the tray. The application can realize uniform glueing.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of gluing, and particularly relates to a method for quantitatively gluing a stator and a rotor seat of a shaft driving motor. BACKGROUND

[0002] In shaft assembly, the torque motor stator and rotor controlling shaft rotation are connected and fixed with a bushing in a gluing mode. In actual operation, the following problems often exist and trouble assembly personnel.

[0003] 1. Before assembling the motor stator, the thickness of the glue in each place is not easy to control in a manual gluing mode, and is not too much or too little, and is not uniformly distributed.

[0004] 2. When the motor stator (see Figure 1 ) is installed, too much glue layer is pressed to the lower end surface of the motor, which causes the stator and rotor to be unable to be installed to the bottom, the position is raised after solidification, the glue layer has been close to solidification for too long time, the motor cannot be taken out, directly causing assembly failure, the motor bushing or motor is scrapped, the economic loss is too large, and the entire assembly cycle node is affected. Too little glue layer is easy to cause the motor stator and rotor to be not firmly bonded, and affect the reliability in later use.

[0005] In summary, through careful analysis, it is found that when bonding, the glue amount in the slot cannot be accurately controlled when manually gluing, and is often uneven in thickness. It is necessary to improve the existing glue layer application mode, increase the process of controlling the thickness of the glue layer, remove the excess glue layer, and supplement the insufficient position, so as to reduce the occurrence of the above adverse conditions. SUMMARY

[0006] The application proposes a device and method for quantitatively gluing a stator and rotor seat of a shaft driving motor in view of the deficiencies of the prior art.

[0007] One of the above purposes of the application is achieved by the following technical scheme:

[0008] A device for quantitatively gluing a stator and rotor seat of a shaft driving motor, comprising a tray, a fixed seat, a sliding limiting rod, a positioning rod, a limiting support, a scraper, a positioning bearing, a spring and a nut;

[0009] The upper end of the fixed seat is coaxially rotatably supported with the lower end of the tray, the lower end of the fixed seat is connected with the center hole of the bushing rotating shaft in a gap cooperation mode, and the tray is provided with a cylindrical table, and the cylindrical table is fixedly connected with the bushing rotating shaft through the inverted L-shaped limiting support;

[0010] The middle part of the fixed seat is provided with a guide through hole in the radial direction; the sliding limiting rod is composed of a front rod segment, a middle rod segment and a tail rod segment, and the middle rod segment is a T-shaped rod segment; the front rod segment of the sliding limiting rod is fixedly connected with the lower part of the positioning rod, the horizontal rod part of the middle rod segment and the tail rod segment of the sliding limiting rod are slidably matched with the guide through hole on the fixed seat in the circumferential direction, and the spring is sleeved on the tail rod segment outside the fixed seat, and the two ends of the spring are in pressure contact with the side surface of the fixed seat and the nut installed at the tail end of the tail rod segment, respectively.

[0011] The scraper is fixedly connected with the lower end of the vertical rod part of the middle rod segment in a blade opening outward manner, and extends into the inner cavity of the bush rotating shaft, and the gap between the highest point of the blade opening of the scraper and the inner cavity surface of the bush rotating shaft is reserved by the limiting circular arc surface arranged at the lower part of the blade opening.

[0012] The upper end of the positioning rod is installed with a positioning bearing, and the positioning bearing is in contact with the outer ring surface of the motor stator supported and fixed in the tray.

[0013] Moreover, the upper part of the fixed seat is provided with an upper cylindrical segment, and a bearing hole is arranged at the center of the lower end of the tray, the fixed seat upper end part is coaxially rotationally supported and matched with the lower end part of the tray through the bearing installed in the upper cylindrical segment and the bearing hole, the guide through hole in the middle part of the fixed seat is composed of a rectangular hole and a circular hole, the horizontal rod part of the middle rod segment of the sliding limiting rod is a square rod segment matched with the rectangular hole on the fixed seat, the square rod segment is in limiting and penetrating connection with the rectangular hole on the fixed seat, and the tail rod segment of the sliding limiting rod is in penetrating connection with the circular hole on the fixed seat.

[0014] Moreover, the vertical rod part of the middle rod segment of the sliding limiting rod is provided with a right-angle notch at the side close to the lower end, a V-shaped protrusion extending in the up-down direction is arranged in the vertical surface middle part of the right-angle notch, a screw through hole is arranged on the V-shaped protrusion, the screw through hole is a long circular hole extending in the up-down direction, the tail end of the scraper is provided with a V-shaped groove, the V-shaped groove is in limiting connection with the V-shaped protrusion of the sliding limiting rod, a threaded hole is arranged in the middle part of the V-shaped groove, and the scraper is adjustably fixed on the sliding rod through the installation of a screw in the threaded hole and the corresponding screw through hole of the sliding limiting rod in the up-down direction.

[0015] Moreover, the gap between the highest point of the blade opening of the scraper and the inner cavity surface of the bush rotating shaft is 0.05mm.

[0016] The second purpose of the present application is achieved by the following technical scheme.

[0017] A glue applying method for the above-mentioned glue applying device for quantitatively applying glue to the stator and rotor seat of a shaft system driving motor, comprising the following steps:

[0018] Step 1, assemble the connecting tray, fixing seat, sliding limiting rod, and install on the bush rotating shaft, at this time the spring and lock nut on the sliding limiting rod are in contact and produce a small amount of elastic force;

[0019] Step 2, the motor stator is placed on the tray, the lever table seat with the lever table is fixed on the frame where the bearing bush is installed, the lever table head is attached to the outer wall of the motor stator, the tray is rotated, the cross alignment method is used, the positioning screw on the side ring of the connecting tray is screwed, the motor stator is aligned, the motor stator is coaxial with the bush rotating shaft and fixed, and the highest point of the stator outer ring is marked;

[0020] Step 3, install the appropriate scraper on the sliding limiting rod, adjust the height of the scraper up and down to ensure that the lower end surface of the scraper is in contact with the horizontal end surface connected to the inner wall of the bearing bush;

[0021] Step 4, the lower end of the limiting support is fixedly connected with the bearing bush through screws, the tail end of the cross arm of the limiting support is abutted against the L-shaped notch on the tray, and the screws are connected to realize the fixation of the tray;

[0022] Step 5, install and adjust the positioning rod to ensure that the upper end bearing of the positioning rod is in contact with the outer ring surface of the motor stator under the condition that the lower end arc high point of the scraper is in contact with the inner wall of the stator bush, and the contact point position is the highest position marked in step 2;

[0023] Step 6, rotate the sliding limiting rod at a constant speed to drive the scraper, and coat the glue in front of the triangular tip of the scraper in the first circle, then rotate it at a constant speed for two circles to ensure that the glue layer is evenly coated, and the profiled glue coating of the inner wall of the bearing bush is completed.

[0024] The application has the advantages and positive effects that:

[0025] (1) The application can realize uniform glue layer, the shape of the glue layer is the same as the shape of the motor stator, which is beneficial to the smooth and smooth installation of the stator into the stator bush, reduces the damage of the stator and rotor caused by assembly knocking and reduces the magnetic performance and many other advantages.

[0026] (2) The application can remove excess glue by special scraper and supplement the insufficient place.

[0027] (3) The special scraper designed in the application and the installation method of the scraper can adjust the position relationship of the scraper to realize different glue layer allowance and thickness.

[0028] (4) The application is simple to operate, the tooling supplies are easy to obtain, convenient and fast, low in cost, outstanding in effect, has no high requirement on the operation technology of the workshop workers, can be operated by untrained workers, and is easy to popularize and apply.

[0029] The present application can be used in the shaping of the glued products in the industries of aerospace, aviation, ship, precision instruments, etc., and has very wide application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the outer shape structure diagram of the motor stator bushing involved in the present application;

[0031] Figure 2 is the overall appearance diagram of the quantitative glue coating device for the shaft driving motor stator and rotor seat;

[0032] Figure 3 is the overall sectional view of the quantitative glue coating device for the shaft driving motor stator and rotor seat;

[0033] Figure 4 is the connection schematic diagram of the limiting support and the fixing seat in the device;

[0034] Figure 5 is the structure schematic diagram of the fixing seat in the device;

[0035] Figure 6 is the structure schematic diagram of the tray in the device;

[0036] Figure 7 is the structure schematic diagram of the sliding limiting rod in the device, 7a, perspective view; 7b, bottom view; 7c, front view;

[0037] Figure 8 is the structure schematic diagram of the positioning rod in the device; 8a, perspective view; 8b, sectional view;

[0038] Figure 9 is the structure schematic diagram of the limiting support in the device;

[0039] Figure 10 is the structure schematic diagram of the scraper in the device, 10a, perspective view Figure 1 ; 10b, perspective view Figure 2 ; 10c, partial view. DETAILED DESCRIPTION

[0040] The structure of the present application will be further described below in combination with the drawings and through examples. It should be noted that the present examples are narrative rather than limiting.

[0041] A quantitative glue coating device for shaft driving motor stator and rotor seat, please refer to Figures 1-10, mainly by tray 3, fixed seat 4, sliding limit rod 5, positioning rod 8, limit support 2, scraper 7, positioning bearing 9, spring 11 and nut 10. As shown in the figure, 1, the inner cavity of the connecting tray is a cylinder for placing the motor stator 1, and is provided with four equal radial threaded holes for adjusting the coaxiality of the motor stator and the bush rotating shaft, and a cylindrical table is arranged in the center of the inner cavity, and an L-shaped notch is arranged on the cylindrical table to form a right-angle mounting part for cooperating with the limit support to ensure the axial rotation of the connecting tray; 2, the fixed seat is used for connecting the bush rotating shaft 6, and after connection, the connecting tray can rotate with the bush rotating shaft, and a square and circular connecting through hole is arranged in the middle of the fixed seat in the radial direction, and the sliding positioning rod can slide and limit in the inside. 3, the sliding limit rod plays a sliding and fixing role, the front end thereof is locked and fixed with the positioning rod, the positioning rod can slide and adjust the position of the front end of the sliding limit rod, a protruding cuboid is arranged downward in the middle of the sliding limit rod, a V-shaped protrusion is arranged on the cuboid, and the V-shaped protrusion cooperates with the V-shaped groove of the scraper to play a high-precision repeated positioning role, the middle rear part of the sliding limit rod is designed as a square connecting cylinder and cooperates with the fixed seat, and a thread is arranged at the tail end to cooperate with the spring and the nut to play a spring pressure adjusting role. 4, the upper end of the positioning rod is provided with a bearing mounting column matched with the inner diameter of the positioning bearing, and the lower end is provided with a square through hole matched with the front end of the sliding limit rod to adjust the fixed position of the positioning rod and ensure the rotation of the positioning bearing after being attached. 5, the front end of the scraper adopts a triangular blade, and a limiting arc surface is arranged at the lower part of the V-shaped blade, the tail end of the scraper is a V-shaped groove, and a threaded hole is arranged in the middle of the groove to cooperate with the sliding limit rod. 6, the limit support is a reverse L-shaped support, the vertical arm of which is fixedly connected with the motor bush, the upper end of the vertical arm is provided with a lower limit block, and two threaded holes are arranged on the lower limit block to adjust and limit the axial rotation of the motor after alignment.

[0042] Device composition:

[0043] 1, fixed seat

[0044] The upper part of the fixed seat is provided with an upper cylindrical section matched with the inner diameter of the bearing, the middle part is provided with a through hole in the radial direction, the through hole is composed of a rectangular hole and a circular hole, a limiting flange is arranged near the lower part, the limiting flange can be in contact with the upper end of the middle part of the bush rotating shaft, the lower part is provided with a lower cylindrical section coaxial with the upper cylindrical hole section, the lower cylindrical section is inserted and positioned with the inner hole of the bush rotating shaft to ensure that the fixed seat is coaxial with the bush rotating shaft.

[0045] 2, tray

[0046] The inner diameter of the tray's circumference is 1mm larger than that of the motor stator. Four threaded through holes 3.1 are evenly spaced on the tray's circumference for mounting positioning screws, used for motor stator alignment and fixation. A cylindrical platform 3.2 with an inverted L-shaped notch 3.3 is located in the center of the tray, used to cooperate with a limiting bracket to fix the tray in place. A bearing hole is formed at the center of the lower end of the tray, mates with the outer diameter of a bearing, and the bearing enables coaxial rotational support between the tray and the fixed base.

[0047] 3. Sliding limit rod

[0048] The sliding limit rod consists of a front section 5.3, a middle section 5.2, and a tail section 5.1. The front section is a square section, and the middle section is a T-shaped section. The horizontal part of the T-shaped section connects to the front section, and its cross-section is a square section that matches the rectangular hole on the fixed base. The cross-sectional area of ​​this square section is larger than that of the front section. The vertical part of the T-shaped section has a right-angle notch near its lower end. A V-shaped protrusion 5.4 extending vertically is provided in the middle of the vertical surface of the right-angle notch, and a screw through hole 5.5 is provided on the V-shaped protrusion. The screw through hole is an elongated hole extending vertically. The tail section is a cylindrical section, and its outer diameter matches the outer diameter of the radially provided circular hole on the fixed base. An external thread is formed at the tail end of the tail section.

[0049] The sliding limit rod is fitted through the transverse side of the middle T-shaped rod section and the tail section to the through hole in the middle of the fixed base. The tail section, located outside the fixed base, engages with the spring sleeve, and the tail end is threaded to a nut, thus achieving horizontal pressure adjustment of the sliding limit rod.

[0050] 4. Positioning rod

[0051] The positioning rod is a vertical rod with a bearing mounting post 8.1 at its upper end, which mates with the inner ring of the positioning bearing, allowing the positioning bearing to contact the outer ring surface of the motor stator fixed in the tray. A square through hole 8.2 is formed at the lower part of the positioning rod, matching the shape of the front section of the sliding limit rod. The positioning rod forms an insertion fit with the front section of the sliding limit rod through the square through hole. A set screw is formed on the side of the square through hole of the positioning rod, and a set screw is installed in the set screw hole to achieve a fixed connection between the positioning rod and the sliding limit rod.

[0052] 5. Limiting bracket

[0053] The limiting bracket has an overall inverted L-shaped structure. Its lower vertical arm has an inner extension joint, which is threadedly fixed to the side of the bushing's rotating shaft. The vertical arm extends outwards to prevent interference during tray rotation. A lower limiting block is formed at the tail end of the horizontal arm, with two screw holes. The lower limiting block aligns with the L-shaped notch on the tray. Screws installed in the two screw holes and the corresponding threaded holes on the tray securely connect the limiting bracket to the tray.

[0054] 6. Scraper

[0055] The scraper's front end features a triangular cutting edge 7.1, with a limiting arc surface 7.2 at the lower part of the triangular cutting edge. The arc height is 1mm, and the highest point of the arc extends 0.05mm beyond the highest point of the triangular tip, ensuring a 0.05mm gap between the triangular tip and the inner wall of the bearing bushing when the highest point of the arc contacts the inner wall. The scraper's tail end has a V-shaped groove 7.3, which engages with the V-shaped protrusion of the sliding limit rod, providing a limiting function in the XY directions. A threaded hole 7.4 is formed in the center of the V-shaped groove. By installing screws in the threaded hole and the corresponding bolt holes on the sliding limit rod, the scraper can be adjusted and fixed in the Z direction.

[0056] A method for quantitative adhesive application to the stator and rotor housings of a shaft drive motor, employing the aforementioned quantitative adhesive application device. The procedure is as follows:

[0057] 1. Assemble the connecting tray, fixed base, and sliding limit rod, and install them on the bushing rotating shaft. At this time, the spring on the sliding limit rod and the lock nut are in contact and generate a small amount of elastic force.

[0058] 2. Place the motor stator on the tray, fix the lever holder with the lever gauge on the frame where the bearing bushing is installed, align the lever gauge head against the outer wall of the motor stator, rotate the tray, use the cross alignment method, tighten the positioning screws on the side ring of the connecting tray to align the motor stator, make the motor stator coaxial with the bushing rotation shaft and fix it, and mark the highest point of the outer ring of the stator.

[0059] 3. Install an appropriate scraper on the sliding limit rod, and adjust the scraper height up and down to ensure that the lower end face of the scraper is in contact with the transverse end face of the bearing bushing inner wall.

[0060] 4. Secure the lower end of the limit bracket to the bearing bushing with screws. Place the tail end of the limit bracket's cross arm against the L-shaped notch on the tray and connect it with screws to fix the tray in place.

[0061] 5. Install and adjust the positioning rod to ensure that when the highest point of the arc at the lower end of the scraper is in contact with the inner wall of the stator bushing, the bearing at the upper end of the positioning rod is in contact with the outer ring surface of the motor stator, and the contact point is the highest position marked in step 2.

[0062] 6. Rotate the sliding limit rod at a constant speed to drive the scraper. Apply the adhesive to the front of the triangular tip of the scraper as it rotates. After completing the first rotation of adhesive application, rotate the scraper at a constant speed for two more rotations to ensure that the adhesive layer is evenly applied. This completes the conformal adhesive application to the inner wall of the bearing bushing.

[0063] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A quantitative adhesive application device for the stator and rotor seats of a shaft drive motor, characterized in that: Includes tray, fixed base, sliding limit rod, positioning rod, limit bracket, scraper, positioning bearing, spring and nut; The upper end of the fixed seat is coaxially rotatably supported and engaged with the lower end of the tray. The lower end of the fixed seat is inserted into the center hole of the bushing rotating shaft to be coated with glue in a clearance fit manner. A cylindrical platform is provided at the center of the tray, and the cylindrical platform is fixedly connected to the bushing rotating shaft through an inverted L-shaped limiting bracket. A radially oriented guide hole is provided in the middle of the fixed base; the sliding limit rod is composed of a front rod segment, a middle rod segment, and a tail rod segment, the middle rod segment being a T-shaped rod segment; the front rod segment of the sliding limit rod is fixedly connected to the lower part of the positioning rod, the crossbar part of the middle rod segment and the tail rod segment of the sliding limit rod form a sliding fit with the guide hole on the fixed base in a circumferentially limited manner, and the spring is fitted on the tail rod segment outside the fixed base, with both ends of the spring pressed into contact with the side of the fixed base and the nut installed at the tail end of the tail rod segment, respectively; The scraper is fixedly connected to the lower end of the vertical rod of the middle rod section with the cutting edge facing outward, and extends into the inner cavity of the bushing rotating shaft. A set gap is maintained between the highest point of the scraper cutting edge and the inner cavity surface of the bushing rotating shaft through a limiting arc surface set at the lower part of the cutting edge. The upper end of the positioning rod is equipped with a positioning bearing, which contacts the outer ring surface of the motor stator that is supported and fixed in the tray.

2. The quantitative adhesive application device for the stator and rotor seats of a shaft drive motor according to claim 1, characterized in that: The upper part of the fixed seat has an upper cylindrical section, and a bearing hole is formed at the center of the lower end of the tray. The upper end of the fixed seat and the lower end of the tray are coaxially rotated and supported by the bearing installed in the upper cylindrical section and the bearing hole. The guide hole in the middle of the fixed seat is formed by the intersection of a rectangular hole and a round hole. The horizontal part of the middle section of the sliding limit rod is a square rod that matches the rectangular hole on the fixed seat. The square rod and the rectangular hole on the fixed seat form a through-fitting limit fit. The tail section of the sliding limit rod and the round hole on the fixed seat form a through-fitting fit.

3. The quantitative adhesive application device for the stator and rotor seats of a shaft drive motor according to claim 1, characterized in that: The vertical section of the middle segment of the sliding limit rod has a right-angle notch near its lower end. A V-shaped protrusion extending vertically is provided in the middle of the vertical surface of the right-angle notch, and a screw through hole is provided on the V-shaped protrusion. The screw through hole is an elongated hole in the vertical direction. The tail end of the scraper has a V-shaped groove, which is matched with the V-shaped protrusion of the sliding limit rod. A threaded hole is made in the middle of the V-shaped groove. By installing screws in the threaded hole and the corresponding screw through hole on the sliding limit rod, the scraper can be adjusted and fixed on the sliding rod in the vertical direction.

4. The quantitative adhesive application device for the stator and rotor seats of a shaft drive motor according to claim 1, characterized in that: The gap between the highest point of the scraper blade and the inner cavity surface of the bushing rotating shaft is 0.05mm.

5. A method for applying adhesive using the quantitative adhesive application device for the stator and rotor seat of a shaft drive motor as described in any one of claims 1-4, comprising the following steps: Step 1: Assemble the connecting tray, fixed base, and sliding limit rod, and install them on the bushing rotating shaft. At this time, the spring on the sliding limit rod and the lock nut are in contact and generate a small amount of elastic force. Step 2: Place the motor stator on the tray, fix the lever holder with the lever gauge on the frame where the bearing bushing is installed, place the lever gauge head against the outer wall of the motor stator, rotate the tray, use the cross alignment method, tighten the positioning screws on the side ring of the connecting tray to align the motor stator, make the motor stator coaxial with the bushing rotation shaft and fix it, and mark the highest point of the outer ring of the stator. Step 3: Install an appropriate scraper on the sliding limit rod, and adjust the scraper height up and down to ensure that the lower end face of the scraper is in contact with the transverse end face of the bearing bushing inner wall; Step 4: Secure the lower end of the limit bracket to the bearing bushing with screws, and press the tail end of the limit bracket's cross arm against the L-shaped notch on the tray and connect the screws to fix the tray. Step 5: Install and adjust the positioning rod to ensure that when the highest point of the arc at the lower end of the scraper is in contact with the inner wall of the stator bushing, the bearing at the upper end of the positioning rod is in contact with the outer ring surface of the motor stator, and the contact point is the highest position marked in Step 2. Step 6: Rotate the sliding limit rod at a constant speed to drive the scraper. Apply the adhesive to the front of the triangular tip of the scraper as it rotates. After completing the first round of adhesive application, rotate the scraper at a constant speed for two more rounds to ensure that the adhesive layer is evenly applied. This completes the conformal adhesive application to the inner wall of the bearing bushing.

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