CN209830385U

CN209830385U - Milling tool for motor casing seam allowance

Info

Publication number: CN209830385U
Application number: CN201920466595.8U
Authority: CN
Inventors: 颜剑; 王利
Original assignee: QUFU ELECTRIC MOTOR Co Ltd
Current assignee: QUFU ELECTRIC MOTOR Co Ltd
Priority date: 2019-04-09
Filing date: 2019-04-09
Publication date: 2019-12-24
Anticipated expiration: 2029-04-09

Abstract

The utility model relates to a motor casing tang milling process frock, the cover is equipped with the hold-down ring subassembly on the fastening epaxial cover between fastening nut and the dabber, the fastening nut crimping is on last hold-down ring subassembly upside terminal surface, the lower extreme terminal surface crimping of going up the hold-down ring subassembly is on the cover upside terminal surface that rises, be provided with many connecting rods on the big footpath section terminal surface of dabber, the other end of connecting rod is all fixed on the mounting panel, a telescopic ejection mechanism is fixed at the center of mounting panel, telescopic ejection mechanism's telescopic end is fixed with the helping and move back ring once, telescopic ejection mechanism extends, the upper end terminal surface crimping of helping and moving back the ring down is on the cover downside terminal surface that rises. The utility model discloses following beneficial effect has: the operation is simple and convenient, the degree of mechanization is high, the processing speed is high, and the labor intensity is effectively reduced; the key point is that the special-shaped seam allowance can be processed by matching with a milling machine, the diversity of products is enriched, and the processed products are not limited to the motor shell.

Description

Milling tool for motor casing seam allowance

Technical Field

The utility model relates to a motor casing tang milling process frock belongs to motor casing processing equipment technical field.

Background

The motor is used as an electric driving device which is widely applied to various fields of national economy, including industry, agriculture, transportation, commerce, service industry and even daily life of people, and is an electrical device which has a large application range and is closely related to the society and human beings. The motor mainly comprises a stator, a rotor, a rotating shaft, a shell and front and rear end covers for supporting the rotating shaft, wherein the shell is connected with the front and rear end covers through rabbets at two ends, and the inner diameter of the shell, the inner diameter of the stator and the coaxiality of the two rabbets are important factors for ensuring the performance of the motor. In actual production and assembly, the housing is a casting and needs to be machined to determine the precise dimensions.

The traditional method comprises the following steps: firstly, turning a spigot at one end of a shell to generate a spigot end face; then, taking the end face of the spigot as a reference, and turning an inner hole of the shell; then turning a spigot at the other end of the shell by taking the inner hole of the shell as a reference; and finally pressing the stator assembly into the inner hole. The main drawbacks of this method are: because the location benchmark transform, fix a position repeatedly, the operation uniformity is difficult for guaranteeing, produces the error, makes the stator module axis produce radial runout for two tang central axes relatively, because the disalignment, the structure matching nature reduces, and magnetic field asymmetry makes motor electrical property receive the influence and motor running noise increase.

Patent application with patent number CN201820505948.6 discloses an electric locomotive seam allowance tooling, which can solve the above technical problems, but still has the following problems in the using process: 1. after the machining is finished, the assembly of the tool and the motor shell needs to be taken down from the lathe together, then the tool and the motor shell are separated, at the moment, one person needs to right the tool, the other person needs to disassemble the compression screw thread, and the motor shell is pulled out through manpower after the compression screw thread is disassembled, so that the disassembling efficiency is low, the labor intensity of workers is high, and the mechanization degree is not too high; secondly, the spigot machined by the tool matched with the lathe can only be a circular spigot, the product is single, and the universality is not strong.

SUMMERY OF THE UTILITY MODEL

According to the not enough among the above prior art, the utility model discloses the technical problem who solves is: in order to solve one of the problems, a milling tool for a motor casing spigot is provided.

The milling tool for the motor shell spigot comprises a mandrel, the mandrel is a truncated cone-shaped mandrel, an expansion sleeve is sleeved outside the mandrel, an inner hole of the expansion sleeve is matched with the outer wall of the mandrel, the outer wall of the expansion sleeve is a cylindrical surface, the motor shell is sleeved on the outer wall of the expansion sleeve, a fastening shaft is coaxially arranged on the end surface of the small diameter end of the mandrel, an external thread matched with a fastening nut is arranged on the fastening shaft, the fastening nut is in threaded connection with the fastening shaft through the external thread, an upper compression ring assembly is sleeved on the fastening shaft between the fastening nut and the mandrel, the fastening nut is in compression connection with the end surface of the upper side of the upper compression ring assembly, the end surface of the lower end of the upper compression ring assembly is in compression connection with the end surface of the upper side of the expansion sleeve, a plurality of connecting rods are arranged on the end surface of the large diameter section of, a telescopic ejection mechanism is fixed at the center of the mounting plate, a lower withdrawing-assisting ring is fixed at the telescopic end of the telescopic ejection mechanism, and when the telescopic ejection mechanism extends, the upper end face of the lower withdrawing-assisting ring is pressed on the lower side end face of the expanding sleeve for ejecting the expanding sleeve.

Preferably, the telescopic ejection mechanism is a hydraulic oil cylinder, converts hydraulic energy into mechanical energy, is a hydraulic actuating element which does linear reciprocating motion, has simple structure and reliable work, can omit a speed reducer when realizing reciprocating motion, has no transmission clearance, and moves stably, thereby being widely applied to hydraulic systems of various machines.

Preferably, the connecting rod comprises a polished rod body, an upper left-hand thread is arranged at the upper end of the polished rod body, a threaded hole A matched with the polished rod body is formed in the end face of the large-diameter section of the mandrel, a lower right-hand thread is arranged at the lower end of the polished rod body, and a threaded hole B matched with the lower right-hand thread is formed in the upper end face of the mounting plate. The lower pressing disc slides up and down on the polished rod body, so that the stable operation of the lower withdrawing-assisting ring is ensured.

Preferably, the upper compression ring assembly comprises an upper compression disc, the lower surface of the upper compression disc is integrally connected with an upper compression ring, a through hole A through which the fastening shaft penetrates is formed in the upper compression disc, the outer diameter of the upper compression ring is smaller than the outer diameter of the expansion sleeve, the inner diameter of the upper compression ring assembly is larger than the inner diameter of the expansion sleeve, and the lower end face of the upper compression ring abuts against the upper end face of the expansion sleeve. And screwing the fastening nut, driving the expansion sleeve to move downwards through the fastening nut, and radially expanding the side wall of the expansion sleeve along the mandrel, so that the side wall of the expansion sleeve is abutted against the inner wall of the stator and the motor shell is fixed.

Preferably, the lower withdrawing-assisting ring comprises a lower pressing disc, the upper surface of the lower pressing disc is integrally connected with a lower pressing ring, a through hole B for the connecting rod to pass through is formed in the lower pressing disc, the telescopic end of the telescopic ejection mechanism is fixed at the central position of the lower surface of the lower pressing disc, the outer diameter of the lower pressing ring is smaller than that of the expanding sleeve, the inner diameter of the lower pressing ring is larger than that of the expanding sleeve, and the upper end face of the lower pressing ring abuts against the lower end face of the expanding sleeve. The extension of the telescopic ejection mechanism is controlled, the lower retreat-assisting ring is pushed by the telescopic ejection mechanism to move upwards to eject the expansion sleeve, the side wall of the expansion sleeve is radially closed along the mandrel, and the motor shell can be easily taken down.

Preferably, the fastening shaft, the mandrel and the telescopic ejection mechanism are coaxially arranged. And the processing precision is ensured.

Preferably, the connecting rods are provided with 3-12 connecting rods which are uniformly distributed along the circumferential direction. The structural strength is ensured, and the stability of the milling process is ensured.

Preferably, the mounting panel includes the disc, and left side extension board and right side extension board are installed to the bilateral symmetry of disc, and disc, left side extension board and right side extension board three integrated into one piece have seted up installation fixed orifices A on the extension board of left side, have seted up installation fixed orifices B on the extension board of right side. Is convenient to be arranged on the workbench of the milling machine.

Preferably, the side wall of the expansion sleeve is provided with a plurality of gaps which are convenient for the side wall of the expansion sleeve to open radially. The side wall of the expansion sleeve is radially expanded along the mandrel, so that the side wall of the expansion sleeve is abutted against the inner wall of the stator and the motor shell is fixed

Compared with the prior art, the utility model discloses following beneficial effect has: through the milling tool for the motor casing seam allowance, the motor casing seam allowance is machined, the whole process can be completed by one person, the operation is simple and convenient, the degree of mechanization is high, the machining speed is high, and the labor intensity is effectively reduced; the key point is that the special-shaped seam allowance can be processed by matching with a milling machine, the diversity of products is enriched, and the processed products are not limited to the motor shell.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is an enlarged schematic view of the structure of the upper hold-down ring assembly according to the embodiment of the present invention;

FIG. 3 is an enlarged view of the structure of the lower run-back ring according to the embodiment of the present invention;

fig. 4 is an enlarged schematic view of the structure of the mounting plate according to the embodiment of the present invention;

in the figure: 1. the device comprises a mandrel 2, an expansion sleeve 3, an upper compression ring assembly 3.1, an upper compression disc 3.2, an upper compression ring 3.3, a perforation A4, a fastening nut 5, a lower withdrawing-assisting ring 5.1, a lower compression disc 5.2, a lower compression ring 5.3, a perforation B6, a telescopic ejection mechanism 7, a mounting plate 7.1, a disc 7.2, a left-side extension plate 7.3, a right-side extension plate 7.4, a mounting fixing hole A7.5, a mounting fixing hole B8, a connecting rod 8.1, a polished rod body 8.2, an upper left-hand thread 8.3, a lower right-hand thread 9, a fastening shaft 10 and a motor shell.

Detailed Description

The invention will be further described with reference to the accompanying drawings:

the present invention is further illustrated by the following specific examples, which are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.

Examples

As shown in fig. 1-4, the milling tool for the motor casing seam allowance comprises a mandrel 1, the mandrel 1 is a truncated cone-shaped mandrel, an expansion sleeve 2 is sleeved outside the mandrel 1, an inner hole of the expansion sleeve 2 is matched with the outer wall of the mandrel 1, the outer wall of the expansion sleeve 2 is a cylindrical surface, a motor casing 10 is sleeved on the outer wall of the expansion sleeve 2, a fastening shaft 9 is coaxially arranged on the end surface of the small diameter end of the mandrel 1, an external thread matched with a fastening nut 4 is arranged on the fastening shaft 9, the fastening nut 4 is in threaded connection with the fastening shaft 9 through the external thread, an upper clamp ring assembly 3 is sleeved on the fastening shaft 9 between the fastening nut 4 and the mandrel 1, the fastening nut 4 is in compression connection with the upper side end surface of the upper clamp ring assembly 3, the lower end surface of the upper clamp ring assembly 3 is in compression connection with the upper side end surface of the expansion sleeve 2, a plurality of connecting rods 8 are arranged on the end surface of the large, the other end of the connecting rod 8 is fixed on the mounting plate 7, a telescopic ejection mechanism 6 is fixed at the center of the mounting plate 7, a lower ejection assisting ring 5 is fixed at the telescopic end of the telescopic ejection mechanism 6, and when the telescopic ejection mechanism 6 extends, the upper end face of the lower ejection assisting ring 5 is pressed on the lower side end face of the expansion sleeve 2 for ejecting the expansion sleeve 2.

In the embodiment, the telescopic ejection mechanism 6 is a hydraulic oil cylinder, converts hydraulic energy into mechanical energy, and is a hydraulic actuating element which makes linear reciprocating motion, has simple structure and reliable work, can omit a speed reducer when realizing reciprocating motion, has no transmission clearance, and moves stably, thereby being widely applied to hydraulic systems of various machines; the connecting rod 8 comprises a polished rod body 8.1, an upper left-hand thread 8.2 is arranged at the upper end of the polished rod body 8.1, a threaded hole A matched with the polished rod body 8.1 is arranged on the large-diameter section end face of the mandrel 1, a lower right-hand thread 8.3 is arranged at the lower end of the polished rod body 8.1, and a threaded hole B matched with the lower right-hand thread 8.3 is arranged on the upper end face of the mounting plate 7; the upper compression ring component 3 comprises an upper compression disc 3.1, the lower surface of the upper compression disc 3.1 is integrally connected with an upper compression ring 3.2, a through hole A3.3 through which a fastening shaft 9 passes is formed in the upper compression disc 3.1, the outer diameter of the upper compression ring 3.2 is smaller than the outer diameter of the expansion sleeve 2, the inner diameter of the upper compression ring component 3.2 is larger than the inner diameter of the expansion sleeve 2, and the lower end face of the upper compression ring 3.2 abuts against the upper end face of the expansion sleeve 2; the lower withdrawing-assisting ring 5 comprises a lower pressing disc 5.1, the upper surface of the lower pressing disc 5.1 is integrally connected with a lower pressing ring 5.2, a through hole B5.3 for a connecting rod 8 to pass through is formed in the lower pressing disc 5.1, the telescopic end of the telescopic ejection mechanism 6 is fixed at the central position of the lower surface of the lower pressing disc 5.1, the outer diameter of the lower pressing ring 5.2 is smaller than the outer diameter of the expansion sleeve 2, the inner diameter of the lower pressing ring 5.2 is larger than the inner diameter of the expansion sleeve 2, and the upper end face of the lower pressing ring 5.2 is abutted against the lower end face of the expansion sleeve 2; the fastening shaft 9, the mandrel 1 and the telescopic ejection mechanism 6 are coaxially arranged; the number of the connecting rods 8 is 8, and the connecting rods are uniformly distributed along the circumferential direction; the mounting plate 7 comprises a disc 7.1, a left extending plate 7.2 and a right extending plate 7.3 are symmetrically mounted on two sides of the disc 7.1, the left extending plate 7.2 and the right extending plate 7.3 are integrally formed, a mounting and fixing hole A7.4 is formed in the left extending plate 7.2, and a mounting and fixing hole B7.5 is formed in the right extending plate 7.3; the side wall of the expansion sleeve 2 is provided with a plurality of gaps which are convenient for the side wall of the expansion sleeve 2 to open radially.

The working principle of the specific embodiment is as follows: the whole tool is fixed on a workbench of a milling machine through a mounting fixing hole A7.4 and a mounting fixing hole A7.4 on a left extension plate 7.2 and a right extension plate 7.3, when a spigot is required to be processed on a motor shell 10, the motor shell provided with a stator is sleeved on a mandrel 1 provided with an expansion sleeve 2, a telescopic ejection mechanism 6 is in a contraction state at the moment, a fastening nut 4 is screwed, an upper compression ring 3 is driven to move downwards through the fastening nut 4, the upper compression ring 3 pushes the expansion sleeve 2 to move downwards, the side wall of the expansion sleeve 2 is radially expanded along the mandrel 1, so that the side wall of the expansion sleeve 2 is abutted against the inner wall of the stator, the motor shell 10 is fixed, one side spigot is processed by using a milling cutter, after the one side spigot is processed, the upper compression ring 3 and the fastening nut 4 are detached, the telescopic ejection mechanism 6 is controlled to extend, a lower auxiliary backing ring 5 is pushed to move upwards by using the ejection mechanism 6, the expansion sleeve 2 is ejected out, the side wall of the expansion sleeve 2 is radially closed along the mandrel 1, the motor shell 10 can be easily taken down, the upper end and the lower end of the motor shell 10 are turned over, the rabbet at the other side is processed by adopting the steps, and the coaxiality between the rabbets at the two sides and the stator can be ensured. The process can be completed by one person, the operation is simple and convenient, the degree of mechanization is high, the processing speed is high, and the labor intensity is effectively reduced; the key point is that the special-shaped seam allowance can be processed by matching with a milling machine, the diversity of products is enriched, and the processed products are not limited to the motor shell.

The specific assembling process of the tool comprises the following steps: a connecting rod 8 is respectively inserted into a through hole B5.3 of a lower withdrawing-assisting ring 5, a mandrel 1 and a mounting plate 7 are respectively placed above and below the lower withdrawing-assisting ring 5, two ends of the connecting rod 8 are screwed into corresponding screw holes by rotating the connecting rod 8, the mandrel 1 is connected with the mounting plate 7 through the connecting rod 8, two ends of a telescopic ejection mechanism 6 are respectively fixed on the lower withdrawing-assisting ring 5 and the mounting plate 7, the extension and the shortening of the telescopic ejection mechanism 6 are controlled by a hydraulic system, an expanding sleeve 2 is sleeved on the outer wall of the mandrel 1, and the lower withdrawing-assisting ring is mounted on a milling machine workbench through the mounting plate 7, so that the assembly before processing is completed.

The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a motor casing tang milling process frock, includes dabber (1), and dabber (1) is round platform shape dabber, is equipped with in dabber (1) overcoat and rises cover (2), and the hole of the cover (2) that rises and the outer wall adaptation of dabber (1), and the cover (2) outer wall that rises is the face of cylinder, and motor casing (10) suit is on the outer wall of the cover (2) that rises, its characterized in that: a fastening shaft (9) is coaxially arranged on the end face of the small-diameter end of the mandrel (1), an external thread matched with the fastening nut (4) is arranged on the fastening shaft (9), the fastening nut (4) is in threaded connection with the fastening shaft (9) through the external thread, an upper hold-down ring assembly (3) is sleeved on the fastening shaft (9) between the fastening nut (4) and the mandrel (1), the fastening nut (4) is in compression joint with the upper side end face of the upper hold-down ring assembly (3), the lower end face of the upper hold-down ring assembly (3) is in compression joint with the upper side end face of the expansion sleeve (2), a plurality of connecting rods (8) are arranged on the end face of the large-diameter section of the mandrel (1), the plurality of connecting rods (8) are all positioned on the same circle with the central line of the mandrel (1), the other ends of the connecting rods (8) are all fixed on the mounting plate (7, a lower withdrawing-assisting ring (5) is fixed at the telescopic end of the telescopic ejection mechanism (6), and when the telescopic ejection mechanism (6) extends, the upper end face of the lower withdrawing-assisting ring (5) is pressed on the lower end face of the expanding sleeve (2) for ejecting the expanding sleeve (2).

2. The motor casing tang milling process frock of claim 1, characterized in that: the telescopic ejection mechanism (6) is a hydraulic oil cylinder.

3. The motor casing tang milling process frock of claim 2, characterized in that: the connecting rod (8) comprises a polished rod body (8.1), the upper end of the polished rod body (8.1) is provided with left-handed threads (8.2), a threaded hole A matched with the polished rod body (8.1) is formed in the end face of a large-diameter section of the mandrel (1), lower right-handed threads (8.3) are arranged at the lower end of the polished rod body (8.1), and a threaded hole B matched with the lower right-handed threads (8.3) is formed in the upper end face of the mounting plate (7).

4. The motor casing tang milling process frock of claim 3, characterized in that: go up compressing tightly ring subassembly (3) including last compressing tightly dish (3.1), the lower surface body coupling who goes up compressing tightly dish (3.1) has last compressing tightly ring (3.2), goes up and compresses tightly the perforation A (3.3) of seting up fastening shaft (9) and passing on dish (3.1), and the external diameter of going up compressing tightly ring (3.2) is less than the external diameter of cover (2) that rises, and the internal diameter of going up compressing tightly ring subassembly (3.2) is greater than the internal diameter of cover (2) that rises, and the lower extreme terminal surface butt of going up compressing tightly ring (3.2) is on the upper end terminal surface of cover (2) that rises.

5. The motor casing tang milling process frock of claim 4, characterized in that: the lower withdrawing-assisting ring (5) comprises a lower pressing disc (5.1), the upper surface of the lower pressing disc (5.1) is integrally connected with a lower pressing ring (5.2), a through hole B (5.3) for a connecting rod (8) to pass through is formed in the lower pressing disc (5.1), the telescopic end of the telescopic ejection mechanism (6) is fixed at the central position of the lower surface of the lower pressing disc (5.1), the outer diameter of the lower pressing ring (5.2) is smaller than that of the expanding sleeve (2), the inner diameter of the lower pressing ring (5.2) is larger than that of the expanding sleeve (2), and the upper end face of the lower pressing ring (5.2) is abutted to the lower end face of the expanding sleeve (2).

6. The motor casing tang milling process frock of claim 5, characterized in that: the fastening shaft (9), the mandrel (1) and the telescopic ejection mechanism (6) are coaxially arranged.

7. The motor casing tang milling process frock of claim 6, characterized in that: the number of the connecting rods (8) is 3-12, and the connecting rods are uniformly distributed along the circumferential direction.

8. The motor casing tang milling process frock of claim 7, characterized in that: mounting panel (7) include disc (7.1), and left side extension board (7.2) and right side extension board (7.3) are installed to the bilateral symmetry of disc (7.1), and disc (7.1), left side extension board (7.2) and right side extension board (7.3) three integrated into one piece have seted up installation fixed orifices A (7.4) on left side extension board (7.2), have seted up installation fixed orifices B (7.5) on right side extension board (7.3).

9. The motor casing tang milling process frock of claim 8, characterized in that: the side wall of the expansion sleeve (2) is provided with a plurality of gaps which are convenient for the side wall of the expansion sleeve (2) to open radially.