Inertia ring gravity center balance correction device

Abstract

The utility model relates to the technical field of dynamic balancing machines, and discloses an inertia ring gravity center balance correction device which comprises a balance detection mechanism used for driving a flywheel to rotate at a high speed and detecting the unbalance amount of the flywheel and a gravity center correction mechanism used for milling and de-weighting the flywheel according to the unbalance amount. The gravity center correction mechanism comprises a lifting assembly and a milling assembly, the lifting assembly comprises a support, a lead screw, a nut and a lifting motor, the support is fixedly installed beside the balance detection mechanism, the two ends of the lead screw are rotationally connected with the support, the lead screw is connected with the nut in a threaded fit mode, and the output end of the lifting motor is fixedly connected with the lead screw. The milling assembly is fixedly installed on the nut and comprises a drill bit and a milling motor used for driving the drill bit to rotate. The technical problem that in the prior art, the efficiency of conducting milling de-weighting on a flywheel to correct the unbalance amount is low is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of dynamic balancing machines, in particular to an inertia ring gravity center balance correction device. Background Art

[0002] The flywheel dynamic balancing machine is a professional equipment used to detect and correct the imbalance of the flywheel. It is used to detect the imbalance generated by the flywheel during rotation and correct it by milling and deweighting to ensure that the flywheel can run smoothly at high speed.

[0003] Existing flywheels are dynamically balanced by special dynamic balancing machines. Dynamic balancing tests are used to check whether the rotation of the flywheel meets the manufacturing requirements. If the flywheel has a dynamic balance amount that does not meet the requirements, it needs to be reworked and corrected. Rework and correction requires the flywheel to be removed from the dynamic balancing machine, the location of the imbalance is marked, and it is transferred to the milling machining center for clamping, positioning, and processing. After the correction is completed, it needs to be manually transferred to the dynamic balancing machine for testing again. The transfer process of the flywheel between the dynamic balancing machine and the milling machining center takes a lot of time, which affects production efficiency. Utility Model Content

[0004] The utility model aims to provide an inertia ring gravity center balance correction device to solve the technical problem of low efficiency in correcting the unbalance amount by milling and deweighting a flywheel in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an inertia ring center of gravity balance correction device, including a balance detection mechanism for driving a flywheel to rotate at high speed and detecting the imbalance of the flywheel and a center of gravity correction mechanism for milling and removing weight from the flywheel according to the imbalance, the balance detection mechanism includes a tray for placing the flywheel, the center of gravity correction mechanism includes a lifting assembly and a milling assembly, the lifting assembly includes a bracket, a screw rod, a nut and a lifting motor, the bracket is fixedly installed beside the balance detection mechanism, the two ends of the screw rod are rotatably connected to the bracket, the screw rod is threadedly connected to the nut, the output end of the lifting motor is fixedly connected to the screw rod, the milling assembly is fixedly installed on the nut, and the milling assembly includes a drill bit and a milling motor for driving the drill bit to rotate.

[0006] The principles and advantages of this solution are: in actual application, through the balance detection mechanism, specifically the tray on which the flywheel is placed, the flywheel is driven to rotate at high speed, the imbalance generated by the flywheel during the rotation process is detected, the lifting motor and the milling motor are controlled to rotate, the nut is driven to move downward, the drill bit contacts the flywheel, and as the nut continues to move downward, the rotating drill bit punches a hole in the flywheel to achieve milling deweighting; after the deweighting is completed, the milling assembly is raised, the rotating platform is controlled to rotate again, the dynamic balance of the flywheel is detected again, and the flywheel is corrected again according to the newly measured imbalance until the flywheel meets the dynamic balance requirements; by integrating the balance detection mechanism and the center of gravity correction mechanism together, the transfer process of the flywheel between the balance detection machine and the milling machining center is eliminated, the transfer time and manual operation are significantly reduced, and the production efficiency is improved.

[0007] As an improvement, the milling assembly also includes a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate are provided with through holes for the drill bit to pass through, the first mounting plate is fixedly connected to the milling motor, the second mounting plate is located below the first mounting plate, an adjusting rod is provided between the first mounting plate and the second mounting plate, the adjusting rod is rotatably connected to the first mounting plate via a bearing, the adjusting rod is threadedly connected to the second mounting plate, the lower section of the adjusting rod is provided with threads, and the top end of the adjusting rod is connected to an adjusting motor for controlling the rotation of the adjusting rod.

[0008] The beneficial effects of this improvement are: a pressure sensor is provided between the first mounting plate and the second mounting plate to monitor the pressure value between the two, and the working condition of the lifting motor at the next moment is judged according to the pressure value, that is, whether the milling assembly continues to move downward; the drilling depth of the drill bit is calculated according to the imbalance of the flywheel, and the corresponding amount of rotation of the adjustment motor is controlled to realize the lifting and lowering adjustment of the second mounting plate relative to the first mounting plate, and then the distance of the drill bit extending out of the second mounting plate is controlled by the imbalance; the depth of drilling into the hole in the flywheel is ensured, and the milling assembly can be controlled to adapt to flywheels of different thicknesses and specifications.

[0009] As an improvement, there are two adjusting rods, which are respectively located on both sides of the drill bit. The output end of the adjusting motor is fixedly connected with an output gear, and the top ends of the two adjusting rods are respectively fixedly connected with driven gears, and the output gears are respectively meshed with the two driven gears.

[0010] The beneficial effect of this improvement is that by arranging the two adjustment rods symmetrically on both sides of the drill bit, it can be ensured that when adjusting the extension length of the drill bit, the force on both sides of the second mounting plate is more evenly applied, the second mounting plate always remains flat, and the second mounting plate can be evenly applied when in contact with the upper surface of the flywheel.

[0011] As an improvement, the tray is in the shape of a stepped cone, and the tray includes a cone for sleeved on the inner wall of the annular flywheel and a chassis for supporting the flywheel. The chassis is provided with positioning pins for connecting with the hole pins on the flywheel. The three positioning pins are equidistantly distributed along the circumferential edge of the chassis.

[0012] As an improvement, the chassis is provided with an extension plate extending outward, and the positioning pin is mounted on the extension plate.

[0013] The beneficial effect of this improvement is that the vertical position of the drill bit is located at the hollow position between adjacent extension plates. When the weight required for milling is large, the drill bit can directly penetrate the flywheel without affecting the tray, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.

[0015] Figure 2 It is a structural schematic diagram of the inertia ring dynamic balancing detection device.

[0016] Figure 3 A schematic diagram of the structure of a tray.

[0017] Figure 4 Schematic diagram of the main drive shaft.

[0018] Figure 5 It is a round positioning pin.

[0019] Figure 6 It is a diamond shaped positioning pin.

[0020] Figure 7 for Figure 1 A partial enlarged view of point A in the middle.

[0021] Figure 8 This is the meshing relationship diagram between the output gear and the driven gear. DETAILED DESCRIPTION

[0022] The following is further described in detail through specific implementation methods:

[0023] The figure marks in the drawings of the specification include: main transmission shaft 1, tray 2, chassis 3, truncated cone 4, locating pin 5, flywheel 6, top plate 7, cylinder 8, bottom plate 9, clamping truncated cone 10, fixing hole 11, fan-shaped hole 12, threaded hole 13, extension plate 14, blind hole 15, first connecting section 16, second connecting section 17, bracket 18, screw 19, slider 20, first mounting plate 21, second mounting plate 22, drill bit 23, adjusting rod 24, output gear 25 and driven gear 26.

[0024] Example

[0025] Basically as attached Figure 1 As shown, an inertia ring gravity center balance correction device includes an inertia ring dynamic balance detection device for driving a flywheel 6 to rotate at high speed and detecting the unbalance amount of the flywheel 6 and a gravity center correction mechanism for milling and removing weight from the flywheel 6 according to the unbalance amount;

[0026] As attached Figure 2 As shown, the inertia ring dynamic balancing detection device includes a main transmission shaft 1 and a tray 2 for fixing a flywheel 6. The main transmission shaft 1 is detachably mounted on a rotating platform for providing rotational force. The rotating platform is located on a workbench, and the tray 2 is detachably mounted on the main transmission shaft 1.

[0027] As attached Figure 3 As shown, the tray 2 is in the shape of a stepped truncated cone, and the tray 2 includes a truncated cone 4 for being sleeved on the inner wall of the annular flywheel 6 and a chassis 3 for supporting the flywheel 6. The chassis 3 is located below the truncated cone 4, and the center of the chassis 3 coincides with the center of the truncated cone 4. The diameter of the chassis 3 is larger than the diameter of the truncated cone 4. The chassis 3 is provided with positioning pins 5 for connecting with the hole pins on the flywheel 6. There are three positioning pins 5, and the three positioning pins 5 are equidistantly distributed along the circumferential edge of the chassis 3.

[0028] As attached Figure 4 As shown, the main transmission shaft 1 includes a top plate 7, a column 8 and a bottom plate 9. The top plate 7 and the bottom plate 9 are respectively fixed at the two ends of the column 8. The bottom plate 9 is connected to the rotating platform. A clamping truncated platform 10 is provided in the center of the upper surface of the top plate 7. Four fixing holes 11 are provided on the top plate 7 in the circumferential direction of the clamping truncated platform 10. The truncated platform 4 of the tray 2 is respectively penetrated with round holes suitable for the clamping truncated platform 10 and the fixing holes 11. The round hole on the truncated platform 4 of the tray 2 is sleeved on the outside of the clamping truncated platform 10, and the relative positions of the tray 2 and the top plate 7 are rotated so that the fixing holes 11 on the top plate 7 are aligned with the round hole positions on the truncated platform 4 of the tray 2. The round hole and the fixing holes 11 are bolted through the tray 2 and the top plate 7 to fix the two. The round hole on the tray 2 suitable for the fixing holes 11 is a countersunk hole, so that the flywheel 6 can be placed on the tray 2 stably.

[0029] The truncated platform 4 of the tray 2 is provided with four penetrating fan-shaped holes 12 , and the fan-shaped holes 12 surround the circular hole on the truncated platform 4 .

[0030] The bottom plate 9 of the main transmission shaft 1 is provided with threaded holes 13 for screw fixing with the rotating platform. There are four threaded holes 13 and they are equally spaced and distributed around the column 8. A groove is provided in the center of the lower surface of the bottom plate 9. The groove of the bottom plate 9 is cylindrical and is buckled on the rotating platform. The relative positions of the bottom plate 9 and the rotating platform are rotated so that the threaded holes 13 on the bottom plate 9 are aligned with the holes on the rotating platform. The main transmission shaft 1 is installed on the rotating platform through the threaded holes 13 with screws.

[0031] The column 8 of the main transmission shaft 1 is provided with blind holes 15 at equal intervals in the circumferential direction.

[0032] As attached Figure 5 and attached Figure 6 As shown, the positioning pin 5 includes a first connecting section 16 for connecting to the chassis 3 of the tray 2 and a second connecting section 17 for connecting to the flywheel 6, and the diameter of the second connecting section 17 is larger than the diameter of the first connecting section 16; the chassis 3 is provided with an extension plate 14 extending outward, and the positioning pin 5 is installed on the extension plate 14, and the extension plate 14 is provided with a hole corresponding to the first connecting section 16 of the positioning pin 5, and the outer end of the second connecting section 17 gradually decreases in diameter from the inside to the outside.

[0033] The second connecting section 17 of the positioning pin 5 is cylindrical or rhombus-shaped; the upper edge of the truncated cone 4 of the tray 2 is in the shape of a slope after edge chamfering.

[0034] Select a locating pin 5 that matches the hole position on the flywheel 6, insert the first connecting section 16 of the locating pin 5 into the hole position on the extension plate 14, and the second connecting section 17 of the locating pin 5 is located outside the tray 2; align the locating pin 5 on the tray 2 with the hole position on the flywheel 6, pass the locating pin 5 through the flywheel 6, and the inner wall of the flywheel 6 is sleeved on the frustum 4 of the tray 2, so that the flywheel 6 is fixed on the inertia ring dynamic balancing detection device.

[0035] As attached Figure 1 As shown, the center of gravity correction mechanism includes a lifting assembly and a milling assembly. The lifting assembly includes a bracket 18, a screw 19, a nut and a lifting motor. The bracket 18 is fixedly installed on the workbench and is located next to the inertia ring dynamic balance detection device. The two ends of the screw 19 are rotatably connected to the bracket 18 through bearings. The screw 19 is threadedly connected to the nut. A slide rail parallel to the screw 19 is also fixedly welded on the bracket 18. The nut is fixedly connected to a slider 20. The slider 20 is slidably connected to the slide rail. The output end of the lifting motor is fixedly connected to the screw 19 to drive the rotation of the screw 19, thereby controlling the nut to move axially along the screw 19 and the slider 20 to move along the slide rail. The milling assembly is fixedly installed on the slider 20. The milling assembly includes a drill bit 23 and a milling motor for driving the drill bit 23 to rotate. The milling motor is fixedly connected to the slider 20, and the output end of the milling motor is fixedly connected to the drill bit 23 to provide power for the rotation of the drill bit 23.

[0036] The milling assembly also includes a first mounting plate 21 and a second mounting plate 22, and the first mounting plate 21 and the second mounting plate 22 are provided with through holes for the drill bit 23 to pass through. The first mounting plate 21 is fixedly connected to the milling motor, and the second mounting plate 22 is located below the first mounting plate 21. An adjusting rod 24 is provided between the first mounting plate 21 and the second mounting plate 22, and the adjusting rod 24 is rotatably connected to the first mounting plate 21 through a bearing, and the adjusting rod 24 is threadedly connected to the second mounting plate 22, and the lower section of the adjusting rod 24 is provided with threads, and the top end of the adjusting rod 24 is connected to an adjusting motor for controlling the rotation of the adjusting rod 24.

[0037] As attached Figure 7 and attached Figure 8 As shown, there are two adjusting rods 24, which are respectively located on both sides of the drill bit 23. The output end of the adjusting motor is fixedly connected with an output gear 25, and the top ends of the two adjusting rods 24 are respectively fixedly connected with driven gears 26, and the output gears 25 are respectively meshed with the two driven gears 26. By controlling the rotation of the adjusting motor, the distance between the first mounting plate 21 and the second rotating plate is controlled, and then the length of the drill bit 23 extending out of the second mounting plate 22 is controlled, so as to control the depth of the drill bit 23 drilling into the flywheel 6.

[0038] A pressure sensor is provided between the first mounting plate 21 and the second mounting plate 22 for monitoring the pressure value therebetween and judging the working condition of the lifting motor at the next moment according to the pressure value, that is, whether the milling assembly continues to move downward.

[0039] The specific implementation process is as follows:

[0040] Place the flywheel 6 horizontally on the tray 2 so that the disc on the tray 2 can be connected to the inner ring of the flywheel 6, and the positioning pin 5 is inserted into the hole on the flywheel 6; fix the flywheel 6, control the rotation of the rotating platform, and drive the flywheel 6 to rotate at high speed by the main transmission shaft 1 and the tray 2. Judge whether the flywheel 6 meets the dynamic balance requirement through the vibration and noise generated during the rotation of the flywheel 6. If it does not meet the dynamic balance requirement, determine the imbalance amount and imbalance distribution through the vibration during rotation; control the rotating platform to stop rotating, and align the area of ​​the flywheel 6 that needs to be milled and deweighted below the drill bit 23 of the center of gravity correction mechanism.

[0041] The drilling depth of the drill bit 23 is calculated according to the imbalance of the flywheel 6, and the adjusting motor is controlled to rotate a corresponding amount, so that the output gear 25 of the adjusting motor drives the two adjusting rods 24 to rotate at the same frequency, thereby realizing the lifting and lowering adjustment of the second mounting plate 22 relative to the first mounting plate 21, and then realizing the distance that the drill bit 23 extends out of the second mounting plate 22 by controlling the imbalance.

[0042] The lifting motor and the milling motor are controlled to rotate, the slider 20 is driven to move downward, and the drill bit 23 contacts the flywheel 6. As the slider 20 continues to move downward, the rotating drill bit 23 punches a hole in the flywheel 6. When the slider 20 drops to a certain height, the second mounting plate 22 contacts the upper surface of the flywheel 6, and a reaction force is generated between the flywheel 6 and the second mounting plate 22, so that the pressure value detected by the pressure sensor between the first mounting plate 21 and the second mounting plate 22 increases. When the measured pressure value is greater than the preset pressure threshold, that is, the flywheel 6 has been rotated into a hole of the required depth, a signal is sent to the lifting motor, causing the lifting motor to reverse and control the slider 20 to move up to the initial position, and the milling motor stops rotating.

[0043] The rotating platform can be controlled to rotate again, the dynamic balance of the flywheel 6 can be detected again, and the flywheel 6 can be corrected again according to the newly measured imbalance until the flywheel 6 meets the dynamic balance requirement.

[0044] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. Inertia ring center of gravity balance correction device, characterized by: It includes a balance detection mechanism for driving a flywheel to rotate at high speed and detecting the imbalance of the flywheel, and a center of gravity correction mechanism for milling and removing weight from the flywheel according to the imbalance. The balance detection mechanism includes a tray for placing the flywheel. The center of gravity correction mechanism includes a lifting component and a milling component. The lifting component includes a bracket, a screw rod, a nut and a lifting motor. The bracket is fixedly installed beside the balance detection mechanism. Both ends of the screw rod are rotatably connected to the bracket. The screw rod is threadedly connected to the nut. The output end of the lifting motor is fixedly connected to the screw rod. The milling component is fixedly installed on the nut. The milling component includes a drill bit and a milling motor for driving the drill bit to rotate.

2. The inertia ring center of gravity balance correction device according to claim 1, characterized in that: The milling assembly also includes a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate are provided with through holes for the drill bit to pass through, the first mounting plate is fixedly connected to the milling motor, the second mounting plate is located below the first mounting plate, an adjusting rod is provided between the first mounting plate and the second mounting plate, the adjusting rod is rotatably connected to the first mounting plate through a bearing, the adjusting rod is threadedly connected to the second mounting plate, the lower section of the adjusting rod is provided with threads, and the top end of the adjusting rod is connected to an adjusting motor for controlling the rotation of the adjusting rod.

3. The inertia ring center of gravity balance correction device according to claim 2, characterized in that: There are two adjusting rods, which are respectively located on both sides of the drill bit. The output end of the adjusting motor is fixedly connected with an output gear, and the top ends of the two adjusting rods are respectively fixedly connected with driven gears, and the output gears are respectively meshed with the two driven gears.

4. The inertia ring center of gravity balance correction device according to claim 3, characterized in that: The tray is in the shape of a stepped frustum, and includes a frustum for sleeved on the inner wall of the annular flywheel and a chassis for supporting the flywheel. The chassis is provided with locating pins for connecting with the hole pins on the flywheel. There are three locating pins, and the three locating pins are equidistantly distributed along the circumferential edge of the chassis.

5. The inertia ring center of gravity balance correction device according to claim 4, characterized in that: The chassis is provided with an extension plate extending outward, and the positioning pin is installed on the extension plate.

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