A clamping device for balancing machines that eliminates the need for repeated tool setting and cutting.

Abstract

This invention discloses a design method for a non-repetitive tool setting cutting clamping device applied to a balancing machine. A mounting base is installed on the balancing machine used to measure rotor imbalance. A cutting transverse moving slide mechanism is mounted on the mounting base, a cutting longitudinal moving slide is mounted on the cutting transverse moving slide mechanism, and a non-repetitive tool setting mechanism is mounted on the cutting longitudinal moving slide. The cutting transverse moving slide mechanism drives the cutting longitudinal moving slide and the non-repetitive tool setting mechanism to move horizontally together, achieving non-repetitive tool setting. This device has good applicability, accurately and securely determining the relative position of the drill bit and rotor, simultaneously clamping and releasing the rotor on the left and right clamping slides, achieving precise control of the position of each moving part, and achieving the purpose of not requiring repeated tool setting for different types of rotors through the synchronous movement of the power head and clamping blocks. It has strong operability and improves the automation level of the balancing machine.

Description

Technical Field

[0001] This invention relates to a clamping device design method, and more particularly to a clamping device design method for use in balancing machines that eliminates the need for repeated tool setting and cutting. Background Technology

[0002] For rotors requiring axial drilling for weight reduction and balancing, especially drive motor rotors in new energy vehicles, the rotor end face is typically clamped to ensure stable clamping before drilling by the drilling mechanism, as drilling generates torque and axial force. Currently, the existing axial drilling clamping device and drilling mechanism move independently; that is, the drilling mechanism is stationary while the clamping device is in motion. Once the clamping device is in place, the drilling mechanism begins to advance, and the coordinates where the drill tip contacts the rotor balance disc are considered the zero point of the drilling depth. The drilling depth is controlled using this zero point as a reference. Since the clamping device holds the rotor balance disc end face, the coordinates when the drill tip reaches the clamping end face can be considered the zero-point coordinates of the drilling. This current design, where the clamping device and drilling mechanism move independently, has two problems:

[0003] 1) For drive motors in new energy vehicles, their structural design consists of multiple laminated laminations stacked together, with a balancing disc located on both sides of the laminations for drilling and weight removal. Due to manufacturing errors in each lamination, the total thickness error of the actual motor rotor laminations is very large. For two different rotors of the same type, due to the thickness error of their laminations, the zero-point coordinates of the drilling mechanism will change significantly when the rotor is clamped, greatly affecting the control of the drilling depth and reducing the weight removal accuracy of the balancing machine.

[0004] 2) If a customer needs to change the rotor type, adjustments to the clamping and drilling mechanisms are often required, especially when there are differences in rotor lamination thickness. The current structure requires a new tool setting operation to confirm the rotor drilling zero point. This increases the operational steps when changing rotor types. Summary of the Invention

[0005] To address the problems existing in the background art, the present invention provides a clamping device that eliminates the need for repeated tool setting.

[0006] The technical solution adopted in this invention is:

[0007] The main structure of the device of the present invention includes a mounting base, a cutting transverse moving slide mechanism, a cutting longitudinal moving slide, and a tool-setting mechanism that eliminates the need for repeated tool setting. The mounting base is mounted on a balancing machine used to measure rotor imbalance. The cutting transverse moving slide mechanism is mounted on the mounting base, the cutting longitudinal moving slide is mounted on the cutting transverse moving slide mechanism, and the tool-setting mechanism that eliminates the need for repeated tool setting is mounted on the cutting longitudinal moving slide. The cutting transverse moving slide mechanism drives the cutting longitudinal moving slide and the tool-setting mechanism to move horizontally together to achieve tool-setting work that eliminates the need for repeated tool setting.

[0008] The cutting transverse moving slide mechanism includes a gear, a left changing slide and a right changing slide, a rack and a servo motor; the gear is hinged to the center of the base, one linear guide slider group is fixed on the base on one side of the gear, and the other two linear guide slider groups are arranged at intervals along the same straight line and fixed on the base on the other side of the gear. The left changing slide and the right changing slide are slidably embedded on the linear guide slider groups and are located on both sides of the gear respectively. The left changing slide and the right changing slide are respectively connected by their respective racks and gears.

[0009] A cylinder is also installed on the base on one side of the left and right changing slides. The cylinder rod end is horizontally connected to the right changing slide.

[0010] The left and right changing slides are equipped with a servo motor and a hard limit device on the base on the other side of the whole. The servo motor and the reducer are mounted on the base through the motor mounting bracket. The output shaft of the servo motor is synchronously connected to one end of the lead screw through the reducer and coupling. The lead screw is supported and mounted on the servo motor mechanism mounting bracket. A nut slider is threadedly fitted on the outside of the lead screw, and a hard limit device is fixed on the nut slider.

[0011] One end of the rack is meshed with a gear, and the other end is fixed to the left / right changing slide.

[0012] The base is provided with screw holes for fixing the base to the corresponding position of the balancing machine, threaded holes for installing the linear guide slider assembly of the cutting transverse moving slide mechanism, threaded holes for installing the cylinder of the cutting transverse moving slide mechanism, threaded holes for installing the motor mounting base of the cutting transverse moving slide mechanism, and gear plate for installing the gear of the cutting transverse moving slide mechanism.

[0013] The cutting longitudinal movement slide includes a servo motor and a reducer, a ball screw, an upper power head mounting base, and a cutting clamping block. The servo motor and reducer are both horizontally mounted on the base via motor mounting bases. The output shaft of the servo motor is horizontally arranged and synchronously connected to one end of the reducer and coupling. The other end of the coupling is synchronously connected to the ball screw. A nut slider is threaded onto the ball screw. Linear guide slider assemblies are provided on both sides of the ball screw. The cutting clamping block is slidably mounted on the linear guide slider assembly. The cutting clamping block and the nut slider are fixedly connected. An upper power head mounting base for installing a tool-setting mechanism that does not require repeated tool setting is fixed on one side of the cutting clamping block.

[0014] The cutting clamping block has a dust suction port on one side, which is fixed by a clamping head. The pipeline is fixed by a dust suction pipeline fixing seat, and the dust suction port is connected to an external vacuum cleaner through the pipeline.

[0015] The aforementioned non-repeating tool setting mechanism includes a power head, a lower power head mounting base, and a drill bit. The lower power head mounting base is fixedly mounted on the upper power head mounting base of the cutting longitudinal moving slide. The power head is mounted on the lower power head mounting base, and the cutting end of the power head is arranged facing the center of the mounting base.

[0016] In this invention,

[0017] One method is to use a gear and rack mechanism driven by a cylinder to synchronously move the left and right clamping devices to clamp the rotor end face.

[0018] Secondly, the clamping device and the drilling mechanism are designed as a whole, so that the drilling mechanism can move synchronously when the clamping device moves, and the distance between the end face of the drilling mechanism and the clamping device remains unchanged.

[0019] With this design, because the distance between the drilling mechanism and the end face of the clamping device remains constant, regardless of changes in rotor lamination thickness or rotor type, the drilling zero point of the drill bit—that is, the distance from the top of the drill bit to the end face of the clamping device—remains constant after the clamping device clamps the rotor. This eliminates the need for tool resetting when changing rotor types, ensuring the accuracy of drilling depth.

[0020] The beneficial effects of this invention are:

[0021] This device has good applicability. The positioning component can accurately determine the relative position of the drill bit and the rotor. At the same time, the gear and rack mechanism enables the left and right clamping slides to clamp and release the rotor synchronously. Various sensors enable precise control of the position of each moving part. The synchronous movement of the power head and the clamping block eliminates the need for repeated tool setting for different types of rotors. It is highly operable and improves the automation level of the balancing machine. Attached Figure Description

[0022] Figure 1 This is a structural diagram of the main body of the present invention.

[0023] Figure 2 This is a schematic diagram of the base of the present invention.

[0024] Figure 3 This is a schematic diagram of the cutting transverse moving slide structure of the present invention.

[0025] Figure 4 This is a schematic diagram of the longitudinal moving slide structure of the present invention.

[0026] Figure 5 This is a schematic diagram of the tool-setting mechanism that eliminates the need for repeated tool setting in this invention.

[0027] Figure 6 This is a schematic diagram of the electric shock device driven by the forward and reverse lead screw of the present invention.

[0028] In the diagram: mounting base A0, cutting transverse moving slide mechanism B0, cutting longitudinal moving slide C0, and tool setting mechanism without repetition D0;

[0029] Screw hole A1, threaded holes A2 and A4, threaded hole A3, threaded hole A6, gear plate A5;

[0030] B1, B4, and B12 are linear guide slider assemblies; B3 and B5 are left and right changing slides; B2 is a cylinder; B3 is a right changing slide; B13 and B15 are racks; B14 is a gear; B6 is a hard limit device; B7 is a servo motor mechanism mounting base; B8 is a coupling; B9 is a motor mounting base; B10 is a reducer; B11 is a servo motor.

[0031] C1 is the cutting clamping block; C5 and C10 are linear guide slider assemblies; C2 is the upper power head mounting base; C3 and C4 are sensor mounting brackets; C6 is the coupling; C7 is the motor mounting base; C8 is the reducer; C9 is the servo motor; C11 is the dust suction pipe fixing base; C12 is the dust suction port; C13 is the clamping head; C14 is the ball screw mechanism.

[0032] Power head D1, lower power head mounting base D2, drill bit D3. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] The main structure of this device is as follows: Figure 1 As shown, the main structure of the device includes a mounting base A0, a cutting transverse moving slide mechanism B0, a cutting longitudinal moving slide C0, and a tool-setting-free mechanism D0.

[0035] Mounting base A0 is bolted to a balancing machine used to measure rotor imbalance. Cutting transverse movement slide mechanism B0 is bolted to mounting base A0. Cutting longitudinal movement slide C0 is bolted to cutting transverse movement slide mechanism B0. Tool setting mechanism D0 is bolted to cutting longitudinal movement slide C0. The tool setting mechanism D0 achieves tool setting without repetition by driving cutting longitudinal movement slide C0 and tool setting mechanism D0 to move horizontally together.

[0036] like Figure 3 As shown, the cutting transverse moving slide mechanism B0 includes a gear B14, a left changing slide B5 and a right changing slide B3, racks B13 and B15, and a servo motor B11. The gear B14 is hinged to the center of the base A0. One linear guide slider group B4 is fixed on the base A0 on one side of the gear B14. The other two linear guide slider groups B1 and B12 are arranged at intervals along the same straight line and fixed on the base A0 on the other side of the gear B14. The left changing slide B5 and the right changing slide B3 are slidably embedded in the linear guide slider groups B1, B4, and B12 and are located on both sides of the gear B14. The left changing slide B5 and the right changing slide B3 are respectively connected by meshing with the gear B14 via their respective racks B13 and B15.

[0037] A cylinder B2 is also installed on the base A0 on one side of the left changing slide B5 and the right changing slide B3. The cylinder rod end of the cylinder B2 is horizontally connected to the right changing slide B3.

[0038] On the other side of the base A0 of the left and right changing slides B5 and B3, there is also a servo motor B11 and a hard limit device B6. The servo motor B11 and the reducer B10 are mounted on the base A0 through the motor mounting bracket B9. The output shaft of the servo motor B11 is synchronously connected to one end of the lead screw through the reducer B10 and the coupling B8. The lead screw is hingedly mounted on the servo motor mechanism mounting bracket B7. A nut slider is threadedly fitted on the outside of the lead screw. At the same time, the nut slider is slidably connected to the servo motor mechanism mounting bracket B7 through the guide rail slider structure. The hard limit device B6 is fixed on the nut slider. The hard limit device B6 is located on the side of the left changing slide B5 and is used to limit and block the movement of the left changing slide B5.

[0039] Cylinder B2 is positioned near the right changing slide B3, and servo motor B11 is positioned near the left changing slide B5. Both the left changing slide B5 and the right changing slide B3 rely on cylinder B2 for their movement. Servo motor B11 drives the hard limit device B6 to move. The hard limit device B6 and the left changing slide B5 are not directly connected.

[0040] One end of rack B13 / B15 is meshed with gear B14, and the other end is fixed to left changing slide B5 / right changing slide B3.

[0041] In practice, the left and right changing slides B3 and B5 are mounted on the sliders of the linear guide slider group B1, B4, and B12 with screws, and the guide rail of the linear guide slider group is fixed on the base A0; the cylinder B2 is rigidly connected to the right changing slide B3 with screws, and the lateral movement of the right changing slide B3 is controlled by the air inlet and outlet ports; the right changing slide B3 is connected to the left changing slide B5 through a gear and rack mechanism consisting of racks B13 and B15 and gear B14 to realize the function of synchronous clamping and releasing, and the speed of movement is controlled by the air pressure adjustment of the cylinder B2.

[0042] like Figure 2 As shown, the base A0 has screw holes A1 for fixing the base A0 to the corresponding position on the balancing machine with screws, threaded holes A2 and A4 for installing the linear guide slider group B1, B4, B12 of the cutting transverse moving slide mechanism B0, threaded hole A3 for installing the cylinder B2 of the cutting transverse moving slide mechanism B0, threaded hole A6 for installing the motor mounting base B9 of the cutting transverse moving slide mechanism B0, and gear plate A5 for installing the gear B14 of the cutting transverse moving slide mechanism B0.

[0043] like Figure 4 As shown, the longitudinal cutting slide C0 includes a servo motor C9, a reducer C8, a ball screw C14, an upper power head mounting base C2, and a cutting clamping block C1. Both the servo motor C9 and the reducer C8 are horizontally mounted on the base A0 via motor mounting base C7. The output shaft of the servo motor C9 is horizontally arranged and synchronously connected to one end of the reducer C8 and coupling C6. The other end of the coupling C6 is synchronously connected to the ball screw C14. A nut slider is threaded onto the ball screw C14. Linear guide slider assemblies C5 and C10 are provided on both sides of the ball screw C14. The cutting clamping block C1 is slidably mounted on the linear guide slider assemblies C5 and C10. The cutting clamping block C1 and the nut slider are fixedly connected. An upper power head mounting base C2 for mounting a non-repeating tool setting mechanism D0 is fixed to one side of the cutting clamping block C1. The servo motor mechanism C9 controls the movement of the ball screw C14 to control the longitudinal movement of the cutting clamping block C1 along the ball screw C14.

[0044] A suction port C12 is provided on one side of the cutting clamping block C1. The suction port C12 is fixed by the clamping head C13. The pipeline is fixed by the suction pipeline fixing seat C11. The suction port C12 is connected to the external vacuum cleaner through the pipeline.

[0045] like Figure 5 and Figure 6As shown, the tool setting mechanism D0, which does not require repetition, includes a power head D1, a lower power head mounting base D2, and a drill bit D3. The lower power head mounting base D2 is fixedly mounted on the upper power head mounting base C2 of the cutting longitudinal moving slide C0. The power head D1 is fixedly mounted on the lower power head mounting base D2. The cutting end of the power head D1 is arranged towards the center of the mounting base A0 between the left and right changing slides B3 and B5.

[0046] Since the power head mounting base D2 and the cutting clamping block C1 are rigidly connected by screws, the relative position of the drill bit D3 and the cutting clamping block C1 is fixed. That is, after one tool setting, even if the rotor model is changed, the distance between the starting point of the drill bit and the end face of the drill is fixed, thus achieving the purpose of not needing to repeat the tool setting.

Claims

1. A clamping device for balancing machines that eliminates the need for repeated tool setting and cutting, characterized in that: The main structure of the device includes a mounting base (A0), a cutting transverse moving slide mechanism (B0), a cutting longitudinal moving slide (C0), and a tool-setting mechanism that eliminates the need for repeated tool setting (D0). The mounting base (A0) is mounted on a balancing machine used to measure rotor imbalance. The cutting transverse moving slide mechanism (B0) is mounted on the mounting base (A0), the cutting longitudinal moving slide (C0) is mounted on the cutting transverse moving slide mechanism (B0), and the tool-setting mechanism that eliminates the need for repeated tool setting (D0) is mounted on the cutting longitudinal moving slide (C0). The cutting transverse moving slide mechanism (B0) drives the cutting longitudinal moving slide (C0) and the tool-setting mechanism that eliminates the need for repeated tool setting to move horizontally together, thus achieving tool cutting without the need for repeated tool setting. The cutting longitudinal moving slide (C0) includes a servo motor (C9), a reducer (C8), a ball screw (C14), an upper power head mounting base (C2), and a cutting clamping block (C1). Both the servo motor (C9) and the reducer (C8) are horizontally mounted on the base (A0) via a first motor mounting base (C7). The output shaft of the servo motor (C9) is horizontally arranged and synchronously connected to one end of the reducer (C8) and the other end of the first coupling (C6). The end is synchronously connected to the ball screw (C14). The ball screw (C14) is fitted with a nut slider through a threaded sleeve. Linear guide slider assemblies (C5, C10) are provided on both sides of the ball screw (C14). The cutting clamping block (C1) is slidably mounted on the linear guide slider assembly (C5, C10). The cutting clamping block (C1) and the nut slider are fixedly connected. An upper power head mounting seat (C2) for installing the non-repeating tool setting mechanism (D0) is fixed on one side of the cutting clamping block (C1).

2. The non-repetitive tool setting cutting clamping device for a balancing machine according to claim 1, characterized in that: The cutting transverse moving slide mechanism (B0) includes a gear (B14), a left changing slide (B5) and a right changing slide (B3), racks (B13, B15) and a servo motor (B11); the gear (B14) is hinged to the center of the base (A0), one linear guide slider group (B4) is fixed on the base (A0) on one side of the gear (B14), and the other two linear guide slider groups (B1, B12) are fixed on the base (A0) on the other side of the gear (B14) along the same straight line. The left changing slide (B5) and the right changing slide (B3) are slidably embedded on the linear guide slider groups (B1, B4, B12) and are located on both sides of the gear (B14). The left changing slide (B5) and the right changing slide (B3) are respectively connected by meshing with their respective racks (B13, B15) and gears (B14). A cylinder (B2) is also installed on the base (A0) on one side of the left changing slide (B5) and the right changing slide (B3). The cylinder rod end of the cylinder (B2) is horizontally connected to the right changing slide (B3). On the other side of the base (A0) of the left changing slide (B5) and the right changing slide (B3), there is also a servo motor (B11) and a hard limit device (B6). The servo motor (B11) and the reducer (B10) are mounted on the base (A0) through the second motor mounting seat (B9). The output shaft of the servo motor (B11) is synchronously connected to one end of the lead screw through the reducer (B10) and the second coupling (B8). The lead screw is supported and mounted on the servo motor mechanism mounting seat (B7). A nut slider is threadedly fitted on the outside of the lead screw, and a hard limit device (B6) is fixed on the nut slider.

3. The non-repetitive tool setting cutting clamping device for a balancing machine according to claim 2, characterized in that: One end of the rack (B13 / B15) is meshed with the gear (B14), and the other end is fixed to the left changing slide (B5) / right changing slide (B3).

4. The non-repetitive tool setting cutting clamping device for a balancing machine according to claim 2, characterized in that: The base (A0) is provided with screw holes (A1) for fixing the base (A0) to the corresponding position on the balancing machine with screws, first threaded holes (A2) and second threaded holes (A4) for installing the linear guide slider group (B1, B4, B12) of the cutting transverse moving slide mechanism (B0), third threaded hole (A3) for installing the cylinder (B2) of the cutting transverse moving slide mechanism (B0), fourth threaded hole (A6) for installing the second motor mounting base (B9) of the cutting transverse moving slide mechanism (B0), and gear plate (A5) for installing the gear (B14) of the cutting transverse moving slide mechanism (B0).

5. The non-repetitive tool setting cutting clamping device for a balancing machine according to claim 1, characterized in that: The cutting clamping block (C1) has a dust suction port (C12) on one side. The dust suction port (C12) is fixed by a clamping head (C13). The pipeline is fixed by a dust suction pipeline fixing seat (C11). The dust suction port (C12) is connected to an external vacuum cleaner through the pipeline.

6. The non-repetitive tool setting cutting clamping device for a balancing machine according to claim 1, characterized in that: The aforementioned non-repeating tool setting mechanism (D0) includes a power head (D1), a lower power head mounting base (D2), and a drill bit (D3). The lower power head mounting base (D2) is fixedly mounted on the upper power head mounting base (C2) of the cutting longitudinal moving slide (C0). The power head (D1) is mounted on the lower power head mounting base (D2), and the cutting end of the power head (D1) is arranged facing the center of the mounting base (A0).

Images