Test device for load capacity of main drive motor of pick and place machine

Abstract

This utility model discloses a test device for the load capacity of a main drive motor in a pick-and-place machine, which is used for testing the performance of drive motors. The device includes a mounting base and a test unit mounted on the mounting base. The test unit includes a motor mounting seat and a load roller. The motor mounting seat is a separate unit, comprising a first mounting seat and a second mounting seat. The connecting surfaces of the first and second mounting seats are stepped surfaces, and installation and positioning are achieved through interlocking of the stepped surfaces. The first mounting seat supports the motor, and the second mounting seat supports the load roller. This solution avoids integrating the motor load capacity testing process into the overall assembly process of the pick-and-place machine, preventing interference with the assembly of other components by assembly personnel and avoiding dangers to assembly workers. It meets the needs of motor drive engineers to conduct motor load capacity testing flexibly and safely.

Description

Technical Field

[0001] This utility model relates to the field of drive motor performance debugging device, specifically a load capacity testing device for the main drive motor of a chip mounter. Background Technology

[0002] In the field of pick-and-place machine technology, high-end models generally use linear motors to drive the placement head and crossbeam to achieve X / Y axis movement. However, their high price makes it difficult to meet the economic needs of small and medium-sized SMT production lines. Currently, the mainstream market still relies on a cost-effective ball screw + servo motor + linear guide drive solution. The parameters of key servo motors (such as the core Y-axis drive motor) purchased from the market are often not fully documented, failing to meet the needs of pick-and-place machine R&D. Therefore, motor drive engineers must conduct additional performance parameter testing and verification of these motors. By working with the programmed motion, engineers need to adjust the motor motion performance from multiple angles and directions to optimize the motion control curve, ensure its smoothness, and ultimately meet the actual requirements of high-precision positioning.

[0003] Integrating the servo motor performance tuning process directly into the overall assembly of the pick-and-place machine, while utilizing components such as the motor mounting bracket, couplings, and ball screws on the machine, presents significant drawbacks: During tuning, the interference generated by the high-power motor can easily disrupt the work of assembly personnel at other stations, and high-speed rotating components (such as couplings and ball screws) pose a potential risk of personal injury. This not only compromises safe production but also severely hinders the overall efficiency of the machine assembly. Furthermore, tuning high-power servo motors (especially paired Y-axis motors) during the overall assembly stage will severely interfere with the assembly of other precision components, further delaying the overall assembly progress, increasing unnecessary operator hours, and significantly reducing production efficiency.

[0004] Therefore, a solution is needed that allows motor drive engineers to conduct motor load capacity tests flexibly and safely, while avoiding any obstacles to the overall assembly schedule. Utility Model Content

[0005] The purpose of this invention is to overcome the problems existing in the prior art and provide a test device for the load capacity of the main drive motor of a chip mounter. It can provide an efficient testing environment outside the assembly line and is a key support for accelerating the research and development process and ensuring production safety and efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A load capacity testing device for the main drive motor of a chip mounter includes a mounting base plate and a testing unit disposed on the mounting base plate. The testing unit includes a motor mounting bracket and a load roller.

[0008] The motor mounting base is a split type, including a first mounting base and a second mounting base. The connecting surfaces of the first mounting base and the second mounting base are stepped surfaces, and the installation and positioning are achieved by interlocking the stepped surfaces. The first mounting base is used to support the motor, and the second mounting base is used to support the load roller.

[0009] The load roller is provided with a first seated bearing and a second seated bearing at both ends. The first seated bearing is fixedly mounted on the second mounting base, and the second seated bearing is fixedly mounted on the mounting base plate.

[0010] Preferably, the first mounting base has a hollow structure inside, and a coupling is provided inside the cavity; the second mounting base has a hollow structure to accommodate the first bearing with a seat.

[0011] Preferably, the load roller has a three-section stepped shaft at one end of the coupling, consisting of a wrench section, a first seated bearing connecting section, and a coupling connecting section from the inside out. The coupling connecting section is used to connect the coupling. The first seated bearing connecting section is used to pass through the first seated bearing. The outer end of the first seated bearing connecting section has an external thread section, and the external thread section has a locking nut for fixing the first seated bearing. A spacer is provided between the locking nut and the first seated bearing.

[0012] Preferably, the load roller has a two-section stepped shaft at the end away from the coupling, consisting of a wrench position section and a second bearing seat connection section from the inside to the outside. The second bearing seat connection section is used to pass through the second bearing seat. The tail of the second bearing seat connection section is provided with an annular groove, and a retaining ring is provided in the annular groove to constrain the installation position of the load roller.

[0013] Preferably, the second bearing with a seat has a support block at its bottom; the mounting base plate has two mounting grooves, the shapes of which are adapted to the motor end support and the support block, respectively, for positioning the motor end support and the support block.

[0014] Preferably, the load roller is fitted with a protective cover.

[0015] Preferably, the first mounting base is made of Q235A or HT300 material, and the second mounting base is made of aluminum alloy.

[0016] Preferably, the device includes a plurality of test units arranged in parallel, with adjacent test units arranged in opposite directions.

[0017] Preferably, the mounting base plate has miniature feet at the four corners of its bottom. Each miniature foot includes a threaded post and a nut located below it. The threaded post is rotatably connected to the mounting base plate, and the bottom of the nut is provided with a rubber pad.

[0018] Preferably, the mounting base plate has Z-shaped sheet metal bending fixing feet at the four corners of its bottom.

[0019] The technical solution of this utility model can achieve the following effects: it avoids integrating the motor load capacity testing process into the overall assembly process of the pick-and-place machine, avoids interference with the assembly of other parts by the assembly personnel, and avoids dangers to the assembly personnel. It meets the needs of motor drive engineers to conduct motor load capacity testing flexibly and safely, and provides an efficient testing environment outside the assembly line. It is a key support for accelerating the R&D process and ensuring production safety and efficiency. In the rapid iterative R&D phase of pick-and-place machines, the main drive motor load capacity testing device of this utility model has strong engineering practicality. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the load capacity testing device for the main drive motor of the chip mounter according to this utility model;

[0021] Figure 2 This is a partial cross-sectional structural diagram of the test unit of this utility model;

[0022] Figure 3 This is a schematic diagram of the load roller structure of this utility model.

[0023] In the diagram: 1. Mounting base plate; 2. Test unit; 3. Motor mounting base; 4. First mounting base; 5. Second mounting base; 6. Load roller; 7. External thread section; 8. Coupling; 9. Protective cover; 10. Wrench position section; 11. Annular groove; 12. Motor end support; 13. First seated bearing; 14. Second seated bearing; 15. First seated bearing connecting section. Detailed Implementation

[0024] 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 scope of protection of the present utility model. The terms "first" and "second" in the present utility model are only used for distinguishing reference and do not indicate any order.

[0025] This utility model provides a load capacity testing device for the main drive motor of a chip mounter, including a mounting base plate 1 and a testing unit 2 disposed on the mounting base plate 1. The testing unit 2 includes a motor mounting seat 3 and a load roller 6. The motor mounting seat 3 is a split type, including a first mounting seat 4 and a second mounting seat 5. The connecting surfaces of the first mounting seat 4 and the second mounting seat 5 are stepped surfaces, and the mounting is positioned by interlocking the stepped surfaces. The first mounting seat 4 is used to support the motor, and the second mounting seat 5 is used to support the load roller 6. The load roller 6 is provided with a first bearing 13 and a second bearing 14 at both ends. The first bearing 13 is fixedly disposed on the second mounting seat 5, and the second bearing 14 is fixedly disposed on the mounting base plate 1. A protective cover 9 is sleeved on the outside of the load roller 6. The first mounting seat 4 has a hollow structure inside, and a coupling 8 is disposed in the cavity. The second mounting seat 5 has a hollow structure to accommodate the first bearing 13.

[0026] Furthermore, the load roller 6 has a three-section stepped shaft at one end of the coupling 8, consisting of a wrench-shaped section 10, a first seated bearing connecting section 15, and a coupling connecting section from the inside out. The coupling connecting section is used to connect the coupling. The first seated bearing connecting section 15 is used to pass through the first seated bearing 13. The outer end of the first seated bearing connecting section 15 has an external thread section 7, and a locking nut is provided on the external thread section 7. A spacer is provided between the locking nut and the first seated bearing 13 to limit the position of the load roller. By continuously tightening the locking nut, the shoulder of the wrench-shaped section 10 on the load roller is forced to fit against the inner ring side of the bearing in the first seated bearing, thus achieving installation. The coupling connecting section is connected to the second mounting base 5. The load roller 6 has a two-section stepped shaft at the end away from the coupling 8. From the inside out, the structure consists of a wrench-shaped section 10 and a second bearing seat connection section. The second bearing seat connection section is inserted into the second bearing seat 14. The tail of the second bearing seat connection section has an annular groove 11, and a retaining spring is installed in the annular groove 11 to constrain the installation position of the load roller. A support block is provided at the bottom of the second bearing seat 14. The mounting base plate 1 has two mounting grooves, the shapes of which are adapted to the motor end support 12 and the support block, respectively, for positioning the motor end support 12 and the support block. Miniature feet are provided at the four corners of the bottom of the mounting base plate 1. Each miniature foot includes a threaded post and a nut located below it. The threaded post is rotatably connected to the mounting base plate 1, and a rubber pad is provided at the bottom of the nut. A Z-shaped sheet metal bending fixing foot is provided next to the miniature foot.

[0027] Preferably, the device includes multiple test units 2 arranged in parallel, with adjacent test units 2 arranged in opposite directions. The middle section of the load roller 6 can be a cylindrical section, a cuboid, a triangular prism, or multiple cylindrical sections of varying thicknesses, depending on the required moment of inertia, and can be flexibly designed into various shapes.

[0028] For example, such as Figure 1 As shown, four mounting slots are provided on the limited area of ​​the mounting base plate 1 (6061 aluminum alloy). These four slots are arranged in pairs, corresponding to two groups of test units 2 arranged in opposite directions. Taking a single test unit as an example, a motor end support 12 (6061 aluminum alloy) is fixed between the motor mounting base 3 and the mounting base plate 1. The Y-axis motor is fixed to the first mounting base 4 (Q235A or HT300 material with nickel plating) using four M8 socket head cap screws. The first mounting base 4 has stepped holes and is fixed to the motor end support 12 using four M5 socket head cap screws. The motor end support 12 has large slots with four stepped through holes on the slot surface, which are fixed to the mounting base plate 1 using four M6 socket head cap screws. The mounting slots serve to position other parts for installation, achieving a collinearity effect with minimal effort.

[0029] The second mounting base 5 (made of 6061 stainless steel with anodized surface) has a misaligned, overlapping positioning surface with the first mounting base 4. The second mounting base 5 is fixed to the motor end support base 12 (made of 6061 aluminum alloy) using four M5 socket head cap screws. The coupling 8 (double diaphragm coupling 8) within the area encircled by the second mounting base 5 and the first mounting base 4 is fixed to the motor shaft end. The other end of the coupling 8 is fixed to the left shaft end of the load roller 6 (made of Q235A stainless steel with nickel plating). The second mounting base 5 is fixed to the left-side bearing with a mounting seat using four M5 socket head cap screws. The stepped shaft end of the load roller 6 on the left passes through the bearing's inner bore and is installed in place using a lock nut. Both the left and right sides of the load roller 6 have wrench positions 10 for easy tightening of the lock nut with the target torque during installation (or for assisting in reverse tightening of the lock nut during removal). The right end of the load roller 6 passes through the inner bore of the bearing housing and is secured to the retaining circlip groove on the right end of the load roller 6 via a C-shaped retaining circlip, thus positioning the right end of the load roller 6 relative to the bearing housing. A safety guard 9 is also provided on the upper part of the load roller 6, and the safety guard 9 is fixedly connected to the mounting base plate 1 by six M4 hexagon socket head cap screws. Two handles are located on the sides of the two sets of motor load test components on the mounting base plate 1, and each handle is fixed to the mounting base plate 1 by two M6 hexagon socket head cap screws.

[0030] Four miniature foot cups are installed at the four corners of the lower part of the mounting base plate 1. The lower part of each miniature foot cup is a Φ35mm, 11.5mm thick rubber pad, and the middle part is an M8 threaded post. A square nut integrally formed with the threaded post is located on the lower side of the threaded post, and an M8 Type I hexagonal nut that can be freely tightened is located on the upper part of the threaded post, fitting against the bottom surface of the mounting base plate 1. In addition, each miniature foot cup has a Z-shaped support foot on its side. One end of each Z-shaped support foot passes through an M5 threaded hole and is fixed to the mounting base plate 1 using an M5 socket head cap screw. The other end of the Z-shaped support foot has two Φ6.6mm through holes. For mild testing conditions, the miniature foot cups can be used for direct support. For more demanding testing conditions, the height of the miniature foot cups can be adjusted by rotating them upwards, using the Z-shaped support feet to fix the entire device on a heavy optical platform. Stable testing should be ensured. These two support methods improve the applicability to different working conditions.

[0031] This invention provides a load capacity testing device for the main drive motor of a pick-and-place machine, primarily targeting high-power servo motors on the Y-axis of the pick-and-place machine. These high-power motors are relatively large and are often used in pairs when driving the Y-axis. Typically, the motor mounting base needs to be made of HT300 stainless steel using a mold-casting process. Considering the reusability of the testing device and to reduce mold costs, the servo motor mounting base 3 is designed as a split unit, consisting of a first mounting base 4 and a second mounting base 5. The second mounting base 5 is used to mount a bearing with a mounting seat. Furthermore, the advantage of this split design of the motor mounting base 3 into two parts is that after motor performance testing, the fixing screws of the first mounting base 4 and the second mounting base 5 can be loosened, disrupting the interlocking surfaces and allowing easy separation of the motor, coupling 8, and load roller 6 shaft ends. This significantly reduces the disassembly difficulty for operators (previously, operators had to manually handle the heavy Y-axis motor, slowly and gradually disrupting the coaxiality of the motor, coupling 8, and load roller 6 shaft ends to complete the disassembly, a cumbersome and laborious process). Test unit 2, mounted on mounting base 1, can accommodate multiple large-sized servo motors mounted in reverse and perform independent tests simultaneously. Different specifications of load rollers 6 and motors can be interchanged as needed to meet various load conditions and testing requirements for motor performance. This provides a solid guarantee for smoother motion control curve tuning to meet actual precision control needs. Another advantage of the split mounting design is its ability to meet lightweight design requirements. The first mounting base 4 is milled from HT300 or Q235A steel, while the second mounting base 5, which is not directly connected to the motor, can be made of lightweight aluminum alloy. Relatively speaking, lightweight alloy materials have lower deformation resistance and allow for larger cutting depths, significantly reducing processing time and costs.

[0032] In summary, this utility model's main drive motor load capacity testing device for pick-and-place machines avoids integrating the motor load capacity testing process into the overall assembly process of the pick-and-place machine. This prevents interference with assembly personnel assembling other components and avoids potential hazards to assembly workers. It meets the needs of motor drive engineers for flexible and safe motor load capacity testing, providing an efficient testing environment outside the assembly line. This is a key support for accelerating R&D processes and ensuring production safety and efficiency. During the rapid iterative R&D phase of pick-and-place machines, this utility model's main drive motor load capacity testing device has strong engineering practicality.

[0033] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0034] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A patch machine main drive motor load capacity testing device, characterized in that, It includes a mounting base plate and a test unit mounted on the mounting base plate. The test unit includes a motor mounting bracket and a load roller. The motor mounting base is a split type, including a first mounting base and a second mounting base. The connecting surfaces of the first mounting base and the second mounting base are stepped surfaces, and the installation and positioning are achieved by interlocking the stepped surfaces. The first mounting base is used to support the motor, and the second mounting base is used to support the load roller. The load roller is provided with a first seated bearing and a second seated bearing at both ends. The first seated bearing is fixedly mounted on the second mounting base, and the second seated bearing is fixedly mounted on the mounting base plate.

2. The apparatus of claim 1, wherein, The first mounting base has an internal cavity structure, and a coupling is installed inside the cavity; the second mounting base has an internal cavity structure and is used to accommodate the first bearing with a seat.

3. The apparatus of claim 1, wherein, The load roller is located at one end of the coupling and has a three-section stepped shaft, which consists of a wrench section, a first seated bearing connecting section, and a coupling connecting section from the inside to the outside. The coupling connecting section is used to connect the coupling. The first seated bearing connecting section is used to pass through the first seated bearing. The outer end of the first seated bearing connecting section has an external thread section. The external thread section has a locking nut for fixing the first seated bearing. A spacer is provided between the locking nut and the first seated bearing.

4. The apparatus of claim 3, wherein, The load roller has a two-section stepped shaft at the end away from the coupling. From the inside to the outside, it consists of a wrench position section and a second bearing seat connection section. The second bearing seat connection section is used to pass through the second bearing seat. The tail of the second bearing seat connection section has an annular groove, and a retaining ring is provided in the annular groove to constrain the installation position of the load roller.

5. The apparatus of claim 4, wherein, The second bearing with a seat is provided with a support block at the bottom; the mounting base plate is provided with two mounting grooves, the shapes of which are adapted to the motor end support seat and the support block, respectively, for positioning the motor end support seat and the support block.

6. The apparatus of any one of claims 1-5, wherein, The load roller is covered with a protective cover.

7. The apparatus according to claim 6, characterized in that, The first mounting base is made of Q235A or HT300 material, and the second mounting base is made of aluminum alloy.

8. The apparatus of claim 6, wherein, The device includes multiple test units arranged in parallel, with adjacent test units arranged in opposite directions.

9. The apparatus of claim 6, wherein, Miniature feet are provided at the four corners of the bottom of the mounting base plate. Each miniature foot includes a threaded post and a nut located below it. The threaded post is rotatably connected to the mounting base plate, and a rubber pad is provided at the bottom of the nut.

10. The apparatus of claim 6, wherein, The mounting base plate has Z-shaped sheet metal bending fixing feet at the four corners of its bottom.

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