Motor gear press-fitting equipment

Abstract

The utility model relates to motor gear press-fitting equipment, which comprises a press-fitting base, guide rods symmetrically arranged on the top of the press-fitting base left and right, and a press-fitting frame arranged between the guide rods in a sliding manner, and is characterized in that a motor pressure head is arranged on the top of the press-fitting frame in a sliding manner, a fixed seat is arranged on the middle side of the top of the press-fitting base, a bottom die is arranged on the top of the fixed seat, and a positioning hole is formed in the bottom die. The positioning rod sliding through the first spring is arranged, and the positioning rod slightly protruding out of the positioning hole in the normal state can ensure that the placed motor gear can be accurately positioned; according to the utility model, the slidable movable floating plate and the bearing plate are arranged to drive the motor shaft core, the motor pressure head and the motor gear which are placed on the floating plate and the bearing plate to be kept on the same vertical line, and the motor moves downwards on the movable floating plate which is accurately guided and positioned during press fitting, so that the motor shaft core is accurately butted with a hole in the motor gear; and the clearance change of the motor is effectively avoided.

Description

Technical Field

[0001] This utility model belongs to the field of press-fitting technology for single-output-end shaft workpieces and shaft hole components, specifically relating to a motor gear press-fitting device. Background Technology

[0002] During the manufacturing and assembly of electric motors, it is essential to maintain precise alignment between the motor shaft and the motor gears to ensure the efficient and stable operation of the entire transmission system. Common motor press-fitting methods typically involve manual alignment, which is not only inefficient but also suffers from inconsistent skill levels and experience among operators. This makes it difficult to ensure the precise circumferential position of the gears on the motor shaft, leading to poor circumferential misalignment of the gears after press-fitting. Consequently, the axial play in the motor may increase or decrease, ultimately resulting in inaccurate gear meshing during transmission, directly impacting the efficiency and stability of power transmission.

[0003] Furthermore, manual alignment cannot guarantee the coaxiality between the motor gear and the shaft. Coaxiality deviation will lead to imbalance and vibration during rotation, thereby accelerating the wear of the equipment and shortening its service life. Utility Model Content

[0004] The purpose of this invention is to provide a motor gear press-fitting device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a motor gear pressing device, comprising a pressing base, guide rods symmetrically arranged on the top of the pressing base, a pressing frame slidably arranged between the guide rods, a motor press head slidably arranged on the top of the pressing frame, a fixed seat arranged on the top center side of the pressing base, a bottom mold arranged on the top of the fixed seat, a positioning hole opened in the bottom mold, a slide rail arranged on the top rear side of the fixed seat, a movable float slidably arranged on the front side of the slide rail, and a receiving plate arranged at the bottom of the movable float.

[0006] Preferably, the bottom of the pressing frame is provided with top rods symmetrically arranged on the left and right sides.

[0007] Preferably, the receiving plate has a slot on its front side, and the slot extends rearward to form a circular groove.

[0008] Preferably, a mounting bracket is provided on the top of the press frame above the motor press head, and a stamping part is mounted on the mounting bracket.

[0009] Preferably, a positioning rod is slidably disposed in the positioning hole via a first spring.

[0010] Preferably, a second spring is connected between the movable float and the fixed base.

[0011] Preferably, the movable float has a semi-cylindrical groove on its front side.

[0012] Preferably, the center points of the motor pressure head, the receiving plate, and the bottom mold are on the same vertical line.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model is provided with a positioning rod that slides through the first spring. Under normal conditions, the positioning rod that protrudes slightly from the positioning hole can ensure the precise positioning of the placed motor gear. While cooperating with the precise pressing of the motor directly above, it can also move downward under force during pressing, driving the electric shaft core to be fully inserted into the motor gear, thus achieving high-quality pressing.

[0014] This utility model also sets up a sliding movable float plate and a receiving plate, which drives the motor shaft core placed on it to keep the motor pressure head and motor gear on the same vertical line. During pressing, the motor moves downward on the movable float plate with precise guidance and positioning, so that the motor shaft core and the motor gear hole are precisely connected, effectively avoiding the motor's misalignment.

[0015] This utility model is also equipped with a top rod, which can push the movable float and the motor downward to maintain the stability of the motor during the pressing process. It can also drive the receiving plate to detach from the motor before pressing, so as to avoid the pressure acting on the machine housing during pressing, which would cause the internal play of the motor to increase or decrease. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a diagram showing the working state of this utility model;

[0018] Figure 3 This is a first exploded view of the present invention;

[0019] Figure 4 This is a second exploded view of the present invention.

[0020] The numbers in the diagram are: 1-press base, 2-guide rod, 3-press frame, 4-motor pressure head, 5-fixed seat, 6-bottom mold, 7-positioning hole, 8-slide rail, 9-movable float, 10-receiving plate, 11-top rod, 12-slot, 13-circular groove, 14-mounting bracket, 15-stamped part, 16-first spring, 17-positioning rod, 18-second spring, 19-semi-cylindrical groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] like Figures 1 to 4 The motor gear pressing device shown includes a pressing base 1, with guide rods symmetrically arranged on the top of the pressing base 1, a pressing frame 3 slidably arranged between the guide rods 2, a motor pressing head 4 slidably arranged on the top of the pressing frame 3, a fixed seat 5 on the top center side of the pressing base 1, a bottom mold 6 on the top of the fixed seat 5, a positioning hole 7 in the bottom mold 6, a slide rail 8 on the rear side of the top of the fixed seat 5, a movable float 9 slidably arranged on the front side of the slide rail 8, and a receiving plate 10 at the bottom of the movable float 9; the bottom of the pressing frame 3 is symmetrically arranged on the left and right sides. There is a top rod 11; a slot 12 is opened on the front side of the receiving plate 10, and the slot 12 extends backward to form a circular groove 13; a mounting bracket 14 is provided on the top of the press frame 3 above the motor press head 4, and a stamping part 15 is installed on the mounting bracket 14; a positioning rod 17 is slidably set in the positioning hole 7 through the first spring 16; a second spring 18 is connected between the movable float 9 and the fixed seat 5; a semi-cylindrical groove 19 is opened on the front side of the movable float 9; the center points of the motor press head 4, the receiving plate 10, and the bottom mold 6 are on the same vertical line. This invention features a positioning rod 17 that slides via a first spring 16. Under normal conditions, the positioning rod 17, slightly protruding from the positioning hole 7, ensures precise positioning of the placed motor gear. This, combined with precise pressing of the motor directly above, allows the rod to move downwards under pressure during pressing, fully inserting the electric shaft into the motor gear for high-quality pressing. Furthermore, the invention includes a sliding movable float 9 and a receiving plate 10, which keep the motor shaft, motor press head 4, and motor gear on the same vertical line. During pressing, the motor moves downwards on the precisely guided movable float 9, ensuring precise alignment between the motor shaft and the motor gear's central hole, effectively preventing any misalignment. Finally, the invention includes a push rod 11, which pushes the movable float 9 and the motor downwards, maintaining the motor's stability during pressing. It can also disengage the receiving plate 10 from the motor before pressing, preventing pressure from acting on the housing during pressing and causing excessive or insufficient misalignment within the motor.

[0024] Example 2

[0025] like Figures 1 to 4The motor gear pressing device shown includes a pressing base 1. Guide rods 2 are symmetrically arranged on the top of the pressing base 1. A pressing frame 3 is slidably arranged between the guide rods 2. That is, the pressing frame 3 can drive all the components on it to slide up and down between the guide rods 2. The driving force required for sliding can be an external driving force, such as push rods, cylinders or other components that can move in the same direction. Alternatively, the guide rods 2 can be directly set as optical axes, and then the pressing frame 3 on them can be controlled to move up and down by optical signals. It can be designed according to actual needs.

[0026] A motor pressure head 4 is slidably mounted on the top of the press frame 3. Correspondingly, a mounting frame 14 is provided on the top of the press frame 3 above the motor pressure head 4. A stamping part 15 is mounted on the mounting frame 14. The stamping part 15 is specifically a servo press, which is used to provide power for pressing the motor. The stamping end is located directly above the motor pressure head 4. When the stamping part 15 is started, the stamping end of the stamping part 15 quickly performs a stamping action and then resets. After pressing against the motor pressure head 4 to complete one stamping action, it stamps the parts below it and then resets.

[0027] Furthermore, a fixed seat 5 is provided on the top center side of the pressing base 1. A bottom mold 6 is provided on the top of the fixed seat 5 directly below the motor pressing head 4. A positioning hole 7 is opened in the bottom mold 6. The size of the positioning hole 7 is the same as the inner diameter of the motor gear. When the motor gear is placed on the bottom mold 6 and the inner diameter of the motor gear is aligned with the positioning hole 7, the motor gear can be set through the center position of the bottom mold 6. This ensures that when the motor is placed on it, the motor shaft can be aligned with the motor gear. Thus, when the motor pressing head 4 makes a pressing action, it can drive the motor shaft to insert into the motor gear, thereby completing the precise pressing of the motor.

[0028] In this embodiment, considering that the motor gear is only placed on the top of the bottom mold 6, and the alignment of the inner diameter of the motor gear with the positioning hole 7 is determined by human eye, the efficiency is not high. In addition, if the equipment shakes during the pressing process, the motor gear will be misaligned and will no longer be able to align with the positioning hole 7, thus failing to ensure accurate pressing of the motor. Therefore, a positioning rod 17 is slidably set in the positioning hole 7 of the bottom mold 6 by the first spring 16. The positioning rod 17 will protrude slightly from the positioning hole 7 in the normal state. Then, the operator only needs to put the motor gear on the positioning hole 7 to accurately place the motor gear directly below the motor press head 4, so as to facilitate accurate pressing of the motor.

[0029] The first spring 16 allows the motor press head 4 to position the motor gear when it is not pressing. When the motor shaft is inserted into the motor gear, the motor press head 4 begins a pressing action, pushing the motor downward until the motor shaft is fully inserted into the motor gear. During this process, the motor shaft passes through the motor gear and abuts against the positioning post. The positioning post is forced to move downward until it no longer protrudes from the positioning hole 7. The first spring 16 is then compressed, and the motor shaft can then be inserted into the positioning hole 7, ensuring that it is fully inserted into the motor gear to complete the pressing. The motor can then be removed as a whole. Subsequently, the positioning post is no longer under force, and the first spring 16 returns to its original position, causing the positioning post to move upward to its original position, protruding from the positioning hole 7, to limit the placement of the next motor gear.

[0030] Example 3

[0031] like Figures 1 to 4 The motor gear pressing device shown requires that, to ensure the accuracy of pressing two items, both must be in a strictly limited position. After positioning, it moves vertically up and down. In this embodiment, this means that the device for placing the motor must be on the same vertical line as the motor pressing head 4 and the motor gear. It can also drive the motor to move downwards towards the motor gear or upwards towards the motor pressing head 4 to cooperate with subsequent pressing operations.

[0032] Subsequently, a slide rail 8 is provided on the rear side of the top of the fixed base 5, and a movable float 9 is slidably provided on the front side of the slide rail 8. The movable float 9 is specifically a carrier with a semi-cylindrical groove 19 on the front side, used to place the motor body; at the same time, a support plate 10 is provided at the bottom of the movable float 9, used to support the bottom of the motor. The shape of the support plate 10 needs to be described in detail. A slot 12 is provided on the front side of the support plate 10, and the slot 12 extends backward to form a circular groove 13. The center of the circular groove 13 is aligned with the center of the motor pressure head 4 and the center of the motor gear. Furthermore, the cross-sectional length of the slot 12 is smaller than the diameter of the motor shaft core, which leads to the conclusion that:

[0033] When placing the motor, the operator should place the motor shaft facing downwards, close to the bottom mold 6, and then insert the motor shaft into the circular groove 13. Then, the motor body should be inserted into the movable floating plate 9. This ensures that after the motor gear is placed, the motor shaft is located between the motor press head 4 and the motor gear, and is kept on the same vertical line as the two. During pressing, the motor shaft can maintain a precise connection with the motor gear, avoiding an increase in motor misalignment.

[0034] A second spring 18 is connected between the movable float 9 and the fixed base 5. When a motor is placed on the movable float 9, the movable float 9 will still be suspended by the action of the second spring 18, which will keep the motor shaft and the bottom mold 6 at a certain distance to facilitate the placement of the motor gear. Only when the movable float 9 is subjected to a certain amount of pressure will it drive the motor on it to move downward, that is, drive the motor shaft to insert into the motor gear. At this time, the second spring 18 is squeezed, and then the motor pressure head 4 completes the pressing action of the motor. After the operator removes the motor, he stops applying force to the movable float 9, and the movable float 9 can move upward to the reset position under the reset action of the second spring 18.

[0035] Example 4

[0036] like Figures 1 to 4 The motor gear pressing device shown, referring to embodiments 2 and 3, can provide the following strokes for pressing the movable floating plate 9 downward:

[0037] 1. The force applied directly by the downward movement of the motor head 4 is applied from the top of the motor, causing the motor, movable float 9, and receiving plate 10 to move downward until the motor shaft is inserted into the motor gear, completing the connection. Then the motor head 4 completes the pressing of the motor.

[0038] However, when the motor press head 4 is making a stamping, it will first move upward a certain distance. At this time, the force on the movable float 9 will decrease, and it will also move upward under the reset action of the second spring 18, which will then drive the motor to move upward. At this time, the motor shaft has already been inserted into the motor gear. If the motor moves again, it may cause the motor gear to deviate or even disengage from the motor shaft. In actual pressing, it is impossible to guarantee the precise docking of the two.

[0039] 2. Referring to point 1, in this embodiment, a downward-pushing power source is installed on the movable float 9 to separate the movement of the movable float 9 and the motor from the stroke of the motor pressure head 4. The power source needs to drive the movable float 9 downward to the point where the upper motor shaft core is inserted into the motor gear after the motor gear is placed. Then, it drives the pressing frame 3 and above the stamping parts 15 and the motor punch downward until the motor punch contacts the motor shaft core. Then, the stamping parts 15 are started to operate to drive the motor punch to complete the pressing of the motor.

[0040] The above-mentioned stroke steps are relatively complex, and the number of components that need to be controlled increases, which naturally reduces efficiency. Furthermore, while the stamping part 15 is applying stamping pressure to complete the pressing of the motor, it also causes the receiving plate 10 to be subjected to the transmitted stamping pressure. The power source needs to simultaneously move the movable float 9 and the receiving plate 10 downwards until the receiving plate 10 is no longer in contact with the motor, in order to prevent the movable float 9 and the receiving plate 10 from being easily damaged after being subjected to impact for a long time. The above-mentioned stroke also has certain control difficulties and is inconvenient to operate.

[0041] 3. In conjunction with points 1 and 2, this embodiment features symmetrical push rods 11 at the bottom of the pressing frame 3. The push rods 11 push the movable floating plate 9 downward and simultaneously drive the receiving plate 10 to disengage from the motor before pressing, thereby achieving efficient and high-precision pressing of the motor.

[0042] Specifically:

[0043] All push rods 11 are located directly above the movable float 9. When the pressing frame 3 moves downward between the guide rods 2, it will drive the push rods 11 downward until they push the movable float 9 downward. The movable float 9 and the receiving plate 10 move downward, driving the motor on them to move downward. During this period, the motor pressure head 4 will maintain the same distance from the top of the motor. Then, the motor shaft inserts into the motor gear, indicating that the stamping part 15 has started to operate. At this time, the pressing frame 3 only needs to move downward a small distance again. At this time, the motor shaft remains in contact with the motor gear and is supported by the movable float 9 and no longer moves. At the same time, on one side, the motor pressure head 4 will move downward again to contact the top of the motor, preparing for stamping. On the other side, the pressing frame 3 moves downward and pushes against the movable float 9 through the push rods 11 to move downward again, thereby driving the receiving plate 10 to move downward and no longer contact the motor. In this way, the receiving plate 10 does not need to bear the instantaneous impact force, avoiding damage.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A motor gear pressing device, comprising a pressing base (1), wherein guide rods (2) are symmetrically arranged on the top of the pressing base (1), and a pressing frame (3) is slidably arranged between the guide rods (2), characterized in that, The pressing frame (3) has a motor pressing head (4) slidably mounted on its top. The pressing base (1) has a fixed seat (5) on its top middle side. The fixed seat (5) has a bottom mold (6) on its top. The bottom mold (6) has a positioning hole (7) inside. The fixed seat (5) has a slide rail (8) on its top rear side. The slide rail (8) has a movable float (9) slidably mounted on its front side. The movable float (9) has a receiving plate (10) at its bottom.

2. The motor gear pressing equipment according to claim 1, characterized in that, The bottom of the press frame (3) is provided with top rods (11) symmetrically arranged on the left and right sides.

3. The motor gear pressing equipment according to claim 1, characterized in that, The receiving plate (10) has a slot (12) on its front side, and the slot (12) extends backward to form a circular groove (13).

4. The motor gear pressing equipment according to claim 1, characterized in that, The top of the press frame (3) is provided with a mounting bracket (14) located above the motor press head (4), and a stamping part (15) is mounted on the mounting bracket (14).

5. The motor gear pressing equipment according to claim 1, characterized in that, A positioning rod (17) is slidably disposed inside the positioning hole (7) via a first spring (16).

6. The motor gear pressing equipment according to claim 1, characterized in that, A second spring (18) is connected between the movable float (9) and the fixed base (5).

7. The motor gear pressing equipment according to claim 6, characterized in that, The movable float (9) has a semi-cylindrical groove (19) on its front side.

8. The motor gear pressing equipment according to claim 1, characterized in that, The center points of the motor pressure head (4), the receiving plate (10), and the bottom mold (6) are on the same vertical line.

Images