Transition lead surface milling device for water meter impeller blades

Abstract

The present invention discloses a device for milling the transition lead surface of water meter impeller blades. The device comprises a base, a cover fixed to the base, a vertical linear drive mechanism fixed to the base, and a horizontal linear drive mechanism fixed to the vertical sliding member of the vertical drive mechanism; a milling cutter rotation drive mechanism and a milling cutter fixed to the horizontal sliding member of the horizontal linear drive mechanism; and a fixture for clamping and positioning the water meter impeller below the milling cutter. The fixture comprises an angle adjustment seat fixed to the base, the outer end of the angle adjustment seat being hingedly connected to a platform that can face the operator. The front panel of the closed cover has a window for inserting a hand to place or remove the water meter impeller being processed, and the front panel of the base has two start button switches that can be pressed by two hands simultaneously to turn on the power. The milling device has strong targeting, relatively simple structure, relatively low equipment cost, can meet the accuracy requirements of the transition lead surface processing angle and depth, and is safe to operate.

Description

Technical Field

[0001] The invention relates to the technical field of water meter impeller processing, in particular to a transition lead surface milling device for water meter impeller blades. Background Art

[0002] In order to improve the accuracy of water meters, a transition lead surface is usually milled out with a milling cutter at the top of the original lead surface of each blade of the initially processed water meter impeller near the hub to correct the appropriate error.

[0003] The processing of transition lead surfaces in the existing technology is generally carried out on a machining center, and its processing accuracy and safety are relatively good. However, the equipment cost of the machining center is too high, often reaching millions of yuan, and the machining center is not very targeted and professional, and sometimes it is difficult to meet the processing efficiency and processing quality requirements of the transition lead surface of the water meter impeller.

[0004] Later, technicians used mold processing methods to process the impeller blades and the original lead surface and transition lead surface at one time, but burrs were inevitable, the angle of the transition lead surface was difficult to meet the precision requirements, and it was difficult to adjust the angle and depth of the transition lead surface in time according to water meters of different specifications. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a transition lead surface milling device for water meter impeller blades which has strong pertinence, relatively simple structure, relatively low equipment cost, can meet the precision requirements of transition lead surface processing angle and depth, and is safe to operate.

[0006] The technical solution of the present invention is to provide a transition lead surface milling device for water meter impeller blades, comprising a base, a cover fixed to the base, a vertical linear drive mechanism fixed to the base, and a horizontal linear drive mechanism fixed to a vertical sliding member of the vertical drive mechanism;

[0007] The present invention is used for the milling device of the transition lead surface of the water meter impeller blade, and further comprises a milling cutter rotation drive mechanism and a milling cutter fixed on the transverse sliding component of the transverse linear drive mechanism;

[0008] The present invention is a device for milling the transition lead surface of a water meter impeller blade, and further includes a fixture for clamping and positioning the water meter impeller below the milling cutter; the fixture includes an angle adjustment seat fixed to a base, an outer end of the angle adjustment seat is hingedly connected to a platform that can be tilted toward an operator, one end of a support arm is hingedly connected to the bottom of the platform, the other end of the support arm is hingedly connected to a nut of a nut-screw pair, one end of the screw of the nut-screw pair is provided with a driving device for driving the screw to rotate, a dividing plate driven to rotate by a motor is provided on one side of the platform, a structure with a circumferential and radial limit on the hub of the water meter impeller is provided on the top of the dividing plate, and a rotary pressing cylinder is provided on the other side of the platform for axially pressing the center of the water meter impeller when the upper milling cutter mills the transition lead surface of a blade of the water meter impeller and releasing the water meter impeller when the water meter impeller is rotated;

[0009] A window is provided on the front panel of the closed housing for inserting a hand to place or remove the impeller of the water meter being processed, and two start button switches are provided on the front panel of the base for turning on the power supply by pressing two hands simultaneously.

[0010] After adopting the above structure, the transition lead surface milling device for water meter impeller blades of the present invention has the following advantages:

[0011] It is highly targeted and is a special equipment for milling the transition lead surface of water meter impeller blades. Its structure is relatively simple and the equipment cost is relatively low. The processed transition lead surface has no burrs, which saves the time of grinding corners.

[0012] The required angle and depth of the transition lead surface can be flexibly and steplessly adjusted, allowing for convenient, quick, and timely adjustment of the angle and depth of the transition lead surface to suit different water meter specifications. This fully meets the high-precision requirements for the angle and depth of the transition lead surface, ensuring improved water meter accuracy from the perspective of the angle and depth of the transition lead surface.

[0013] The indexing plate can be rotated conveniently and flexibly, and each blade of the water meter impeller can be accurately rotated to the position directly below the milling cutter of the device. It is convenient and quick to place or remove the impeller, and it is convenient and quick to tighten or loosen the rotary clamping cylinder. In the process of the milling cutter processing the transition lead surface, the clamping, positioning and fixing of the impeller and blades are firm, stable and reliable, so that the processed transition lead surface has high precision and good quality.

[0014] Although the equipment structure is relatively simple and the equipment cost is relatively low, it adopts the following structure: there is a window on the front panel of the closed cover for hands to reach in to place or remove the water meter impeller being processed, and there are two start button switches on the front panel of the base for two hands to press at the same time to turn on the power. Under any circumstances, if the operator does not press the start button switches with both hands at the same time, the power cannot be turned on, and all subsequent rotation, milling and other processing cannot be carried out, completely eliminating safety hazards and ensuring the personal safety of the operator and the safe operation of the equipment.

[0015] Furthermore, the minimum distance between the two start buttons is 30 centimeters. With this structure, even with the largest hands, the distance between the two start buttons is generally greater than the maximum distance between the thumb and pinky fingers of a fully spread hand. Natural laws and the distance between the two start buttons ensure that a single hand cannot activate both simultaneously. In other words, both hands must be pressed simultaneously to power on, further ensuring the operator's personal safety and the operational safety of the equipment.

[0016] Furthermore, a mounting plate is fixed to the bottom of one of the two sides of the platform. The bottom of the mounting plate is fixed to the top of the two support legs. The bottom ends of the two support legs have respective screw holes. Two fixing screws, which also serve as hinges, pass through these screw holes and engage with threaded holes on either side of the angle adjustment base. With this structure, the platform can be pivoted more flexibly and conveniently relative to the angle adjustment base fixed to the base. After adjusting the desired angle, the screws are tightened to secure the platform together, providing a more secure, stable, and reliable support for the platform during processing.

[0017] Furthermore, there are two bearing seats at the inner and outer ends of the angle adjustment seat, and the two ends of the screw rod are installed on their respective bearing seats through their respective rolling bearings. The nut of the nut-screw pair is a rectangular slider, and the rectangular slider slides in the groove slide rail of the angle adjustment seat below the screw rod. The first stepper motor that drives the screw rod to rotate is fixed on the bearing seat at the inner end. The lower ends of the two arm rods of the support arm are respectively hinged through the first hinge pins fixed on both sides of the upper part of the rectangular slider, and the upper ends of the two arm rods of the support arm are respectively hinged through the two second hinge pins fixed on the bottom surface of the mounting plate. After adopting the above structure, the support and rotation of the screw are more flexible, stable and reliable. Driven by the rotation of the screw, the nut slides linearly along the grooved slide rail to steplessly adjust the platform angle more accurately, smoothly and stably. Moreover, since the stepper motor has a self-locking function, the support of the platform in the processing state is firmer, more stable and more reliable, further ensuring the flexible and stepless adjustment of the required angle of the transition lead surface, meeting the high-precision requirements of the transition lead surface angle, and being able to adjust the angle of the transition lead surface conveniently, quickly and timely according to water meters of different specifications, so that the processed transition lead surface has high precision and good quality. Technical effect.

[0018] Furthermore, the bottom surface of the mounting plate has two longitudinal grooves that accommodate sections of the two arm rods when the mounting plate and the platform are swung downward. A lower convex plate is fixed to the bottom surface of the mounting plate between the two longitudinal grooves where the two second hinge pins are fixed. The two second hinge pins are fixed to the two sides of the lower convex plate and the two groove walls. The top portions of the upper ends of the two arm rods of the support arm hinged to the two second hinge pins are accommodated in their respective longitudinal grooves. With the above structure, possible interference between the top ends of the two arm rods and the bottom surface of the mounting plate is eliminated, making the hinge connection between the support arm and the mounting plate more flexible, stable, and reliable. Moreover, because the two longitudinal grooves can accommodate sections of the two arm rods, the platform and the mounting plate can swing downward more widely, making the adjustment angle of the impeller blade transition lead surface wider and more adaptable.

[0019] Furthermore, a dividing plate drive box is provided on one side of the platform. The output shaft of a second stepper motor fixed to the outside of the dividing plate drive box is coaxially fixed with a worm. A worm wheel meshing with the worm is rotatably installed in the dividing plate drive box. A rotating shaft extending from the top surface of the dividing plate drive box is fixed to the center hole of the worm wheel. The top of the rotating shaft is fixed to the center of the dividing plate of the drive box and drives the dividing plate to rotate around the axis of the rotating shaft. At least two protrusions are symmetrically provided on the outside of the axis of the dividing plate, which match the two limiting holes on the impeller hub to be processed and limit the circumferential and radial directions. With the above structure, the driving structure of the dividing plate is simple and compact, and the rotation of the dividing plate is flexible, stable, reliable and accurate. The circumferential and radial limiting structures are simple, accurate, stable and reliable, and the placement or removal of the impeller is more convenient and faster.

[0020] Furthermore, the indexing plate has a central cylindrical column at its center that mates with the inner diameter of the central blind hole on the bottom surface of the impeller hub being processed and is used to locate the center of the water meter impeller hub. The indexing plate also has a circular protrusion that mates with the inner diameter of the convex ring on the bottom surface of the impeller hub being processed and is used to double-center the impeller hub. This structure makes the impeller centering structure simple, accurate, stable, and reliable, and makes placing and removing the impeller more convenient and faster.

[0021] Furthermore, a rotary compression cylinder seat is located on the other side of the platform. A rotary compression cylinder, used to compress the top surface of the center column of the water meter impeller, is fixed to the top of the rotary compression cylinder seat. With this structure, the height of the rotary compression cylinder is more compatible with the height of the impeller to be compressed. By compressing the top surface of the impeller center column, it is more targeted and practical, and the compression effect is better.

[0022] Furthermore, a bracket is fixed on the base at the rear end of the platform, the bottom of the vertical linear drive mechanism is fixed on the bracket, the two columns of the vertical linear drive mechanism also serve as vertical guide rails, the vertical sliding component is slidably fitted on the two vertical guide rails, the vertical nut of the vertical linear drive mechanism is fixed to the vertical sliding component, the two ends of the vertical screw rod of the vertical linear drive mechanism are rotatably fitted on the upper and lower vertical screw rod support seats connected and fixed to the two columns, and the output shaft of the third stepping motor connected and fixed to the top ends of the two columns is coaxially fixed to the top end of the vertical screw rod;

[0023] Two transverse guide rails are fixed to the vertical sliding component, the transverse sliding component is slidably engaged with the transverse guide rails, a transverse nut of the transverse linear drive mechanism is fixed to the transverse sliding component, both ends of the transverse screw of the transverse linear drive mechanism are rotatably engaged with left and right transverse screw support seats fixed to the vertical sliding component, and an output shaft of a fourth stepper motor fixed to the vertical sliding component is coaxially fixed to the right end of the transverse screw;

[0024] A horizontal fixed plate is fixed on the transverse sliding component, and a fifth stepper motor is installed on the horizontal fixed plate. The output shaft of the fifth stepper motor extending vertically out of the horizontal fixed plate is coaxially fixed with a cylindrical milling cutter with a cutting edge on the bottom surface. The downward extension line of the axis of the cylindrical milling cutter is located in the middle of the front and rear width of the transition lead surface of the water meter impeller blade being processed.

[0025] After adopting the above structure, the vertical linear drive mechanism, the horizontal linear drive mechanism and the milling cutter drive mechanism are simple and compact in structure, cooperate with each other reasonably, have relatively low cost, and have a relatively high degree of automation. The vertical height and horizontal position of the milling cutter can be flexibly and steplessly adjusted so that the milling cutter is always located directly above the transition lead surface of the impeller blade of the water meter being processed. The depth of the transition lead surface can be adjusted conveniently, quickly and timely according to water meters of different specifications, and can fully meet the high-precision requirements of the depth of the transition lead surface, thereby ensuring the improvement of the water meter accuracy from the depth of the transition lead surface.

[0026] Furthermore, the present invention provides a device for milling the transition lead surface of a water meter impeller blade, further comprising a main controller; a first angle sensor is mounted on the mounting plate, a second angle sensor is mounted on the indexing plate; and the first angle sensor, second angle sensor, first stepper motor, second stepper motor, third stepper motor, fourth stepper motor, fifth stepper motor, and rotary pressing cylinder are all electrically connected to the main controller. With the above structure, while placing or removing the impeller is still manually operated, after pressing a start button switch with both hands and turning on the power supply, the angle of the fixture transition lead surface, i.e., the platform angle, is adjusted by the first stepper motor; the indexing plate is rotated at intervals by the second stepper motor to rotate each blade under the milling cutter; the rotary pressing cylinder compresses or releases the blade, and the vertical depth and lateral position of the milling cutter are all controlled by the main controller. This results in a relatively high degree of automation, high platform angle adjustment accuracy, high indexing plate rotation angle accuracy, and high vertical depth and lateral position accuracy of the milling cutter, further ensuring the angular and depth accuracy of the transition lead surface of the water meter impeller blade and high machining quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the impeller to be processed in the present invention Figure 1 (relative to Figure 3 、 Figure 4 enlarge).

[0028] Figure 2 This is a schematic diagram of the structure of the impeller to be processed in the present invention Figure 2 (relative to Figure 3 、 Figure 4 enlarge).

[0029] Figure 3 It is a structural schematic diagram of the transition lead surface milling device for water meter impeller blades of the present invention.

[0030] Figure 4 The present invention is a schematic structural diagram of a transition lead surface milling device for water meter impeller blades without a cover.

[0031] Figure 5 This is a schematic diagram of the structure of the clamp in the present invention Figure 1 .

[0032] Figure 6 This is a schematic diagram of the structure of the clamp in the present invention Figure 2 .

[0033] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure of A in the figure.

[0034] Figure 8 It is a front view structural schematic diagram of the vertical linear drive mechanism, the horizontal linear drive mechanism and the milling cutter drive mechanism in the present invention arranged on the base.

[0035] Figure 9 It is a rear structural schematic diagram of the vertical linear drive mechanism in the present invention.

[0036] Figure 10 It is a rear view structural schematic diagram of the transverse linear drive mechanism in the present invention.

[0037] As shown in the figure:

[0038] 1. Support body, 11. Base, 111. Front plate, 12. Cover, 121. Front panel, 1211. Window, 13. Rotary pressing cylinder seat, 14. Bracket, 141. Second top plate;

[0039] 2. Clamp, 21. Platform, 22. Angle adjustment seat, 221. Grooved slide rail, 23. Nut screw pair, 231. Rectangular slider, 232. Angle adjustment screw, 24. Indexing plate, 241. Boss, 242. Circular protrusion, 243. Countersunk hole, 244. Center circular column, 25. Rotary clamping cylinder, 251. Rocker arm, 252. Pressure block, 26. Mounting plate, 261. Longitudinal groove, 27. Support leg, 28. Fastening screw, 29. Bearing seat, 210. Rolling bearing, 211. First stepper motor, 212. Arm, 213. First hinge pin, 214. Second hinge pin, 215. Lower convex plate, 216. Indexing plate drive box, 217. Second stepper motor, 218. Transition plate;

[0040] 3. Water meter impeller, 31. Hub, 311. Center blind hole, 312. Raised ring, 313. Center column, 32. Blade, 321. Transition lead surface, 322. Original lead surface;

[0041] 4. Vertical linear drive mechanism, 41. Vertical sliding member, 411. First slider, 42. Vertical guide rail, 43. First bottom plate, 44. Vertical nut, 45. Vertical screw, 46. Vertical screw support seat, 47. First top plate, 48. Third stepping motor;

[0042] 5. Horizontal linear drive mechanism, 51. Horizontal sliding member, 511. Second slider, 52. Horizontal guide rail, 53. Horizontal nut, 54. Horizontal screw rod, 55. Horizontal screw rod support seat, 56. First side plate, 57. Second side plate, 58. Fourth stepping motor;

[0043] 6. Milling cutter rotation drive mechanism, 61. Horizontal fixed plate, 62. Fifth stepping motor, 63. Cylindrical milling cutter, 64. Fifth stepping motor output shaft;

[0044] 7. Switches and indicator parts, 71. Start button switch, 72. Emergency stop knob switch, 73. Working indicator light. DETAILED DESCRIPTION

[0045] The following further describes the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the description of these specific embodiments is intended to facilitate understanding of the present invention and does not constitute a limitation of the present invention. In addition, the technical means involved in the various specific embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0046] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 shown.

[0047] The present invention provides a milling device for the transition lead surface of a water meter impeller blade, comprising a base 11, a housing 12 secured to the base 11, a vertical linear drive mechanism 4 secured to the base 11, and a horizontal linear drive mechanism 5 secured to a vertical sliding member 41 of the vertical drive mechanism 4. The vertical linear drive mechanism 4 is secured to the base 11, and may be secured indirectly, such as via a bracket 14 described below.

[0048] The device for milling the transition lead surface of a water meter impeller blade of the present invention further comprises a milling cutter rotation drive mechanism 6 and a milling cutter fixed on a transverse sliding component 51 of a transverse linear drive mechanism 5 .

[0049] like Figure 1-Figure 7 shown.

[0050] The device for milling the transition lead surface of a water meter impeller blade of the present invention further comprises a fixture 2 for clamping and positioning the water meter impeller 3 below the milling cutter 61 . The clamp 2 includes an angle adjustment seat 22 fixed on the base 11. The outer end of the angle adjustment seat 22 is hinged with a platform 21 that can be tilted toward the operator. One end of a support arm is hinged to the bottom of the platform 21. The other end of the support arm is hinged to the nut of a nut screw pair 23 such as the rectangular slider 231 described below. One end of the angle adjustment screw 232 of the nut screw pair 23 is provided with a driving device for driving the angle adjustment screw 232 to rotate, such as the inner end. On one side of the platform 21, there is a dividing plate 24 driven by a motor. The top of the dividing plate 24 has a structure that limits the hub 31 of the water meter impeller 3 in both circumferential and radial directions. On the other side of the platform 21, there is a rotary pressing cylinder 25 for axially pressing the center of the water meter impeller 3 when the upper milling cutter mills the transition lead surface 321 of a blade 32 of the water meter impeller 3, and loosening the water meter impeller 3 when the water meter impeller 3 is rotated. Figure 3As shown, it is easy to understand that the angled surface facing the operator is higher at the rear and lower at the front. The entire vertical surface of the blade 32 connected to the transition lead surface 321 is the original lead surface 322. For ease of distinction, the screw of the nut-screw pair described here can be referred to as the angle adjustment screw 232, and will be referred to as the angle adjustment screw 232 below.

[0051] The front panel 121 of the housing 12 has a window 1211 for inserting a hand to place or remove the processed water meter impeller 3, and the front panel 111 of the base 11 has two start button switches 71 for turning on the power supply by pressing two hands at the same time.

[0052] The minimum distance between the two start button switches 71 is preferably 30 cm. This is mainly based on the general rule that even if the hands are large, a distance of 30 cm between the two start button switches 71 is greater than the maximum distance between the thumb and the little finger of a hand when the fingers are fully spread out.

[0053] In addition to the two start pushbutton switches 71 described above, the front panel 111 of the base 11 may also include an emergency stop knob switch 72 for disconnecting the power supply and an operating indicator light 73 for displaying the power on / off status. For ease of description, both are referred to as switch and indicator element 7. The provision of the emergency stop knob switch 72 further ensures safe operation of the equipment.

[0054] A mounting plate 26 is fixed to the bottom of one of the two sides of the platform 21, similar to the other side described above. The bottom of the mounting plate 26 is fixed to the top of two support legs 27. The bottom ends of the two support legs 27 have respective screw holes. Two set screws 28, which also serve as hinges, pass through these holes and engage with threaded holes on either side of the angle adjustment base 22. After the angle is adjusted, the two set screws 28 can be tightened to prevent the screw from slipping, providing a double layer of locking in addition to the self-locking function of the nut and screw assembly 23. As will be appreciated, a wrench can be inserted through the window 1211 to access the tightened set screws 28. Of course, this should be done with the power off, without compromising the safety of the device.

[0055] The angle adjustment seat 22 has two bearing seats 29 at both ends. The two ends of the angle adjustment screw 232 are mounted on their respective bearing seats 29 via respective rolling bearings 210. The nut of the nut-screw pair 23 is a rectangular slider 231, which slides within the grooved slide rail 221 of the angle adjustment seat 22 below the angle adjustment screw 232. The first stepper motor 211 that drives the angle adjustment screw 232 to rotate is fixed to the inner end of the bearing seat 29. It is not difficult to understand that the output shaft of the first stepper motor 211 is coaxially connected to the angle adjustment screw 232. The lower ends of the two arm rods 212 of the support arm are respectively hinged via first hinge pins 213 fixed to the upper sides of the rectangular slider 231, and the upper ends of the two arm rods 212 of the support arm are respectively hinged via two second hinge pins 214 fixed to the bottom surface of the mounting plate 26.

[0056] Of course, the driving device for driving the angle adjustment screw 232 to rotate can also be a crank fixed to the inner end of the screw. In conjunction with this, a back door can be set. However, after adjusting the angle, the back door is closed and a power switch is set on the back door. Only after the power switch is closed, the two start button switches in the front are turned on, that is, the transition lead surface milling device can be started to ensure the safety and reliability of the device. However, the degree of operation automation is relatively low, the angle adjustment accuracy is also relatively low, and the operation is relatively complicated. In particular, the present invention adopts a structure in which the first stepper motor 211 is combined with the following first angle sensor and main controller, which has a very outstanding advantage. No back door is required, which makes the safety of the cover 12 more secure, and the overall technical effect is particularly obvious. Therefore, it is preferred to adopt a structure in which the first stepper motor 211 is combined with the following first angle sensor and main controller.

[0057] The bottom surface of the mounting plate 26 has two longitudinal grooves 261 for accommodating part of the two arm rods 212 when the mounting plate 26 and the platform 21 are swung down. A lower convex plate 215 is fixed on the bottom surface of the mounting plate 26 between the two longitudinal grooves 261 where the two second hinge pins 214 are fixed. The two second hinge pins 214 are fixed on both sides of the lower convex plate 215 and on the two groove walls. The top parts of the upper ends of the two arm rods 212 of the support arm hinged on the two second hinge pins 214 are accommodated in their respective longitudinal grooves 261.

[0058] A disc drive housing 216 is mounted on one side of the platform 21. The output shaft of a second stepper motor 217, mounted outside the disc drive housing 216, is coaxially fixed to a worm gear. A worm gear meshing with the worm gear is rotatably mounted within the disc drive housing 216. A rotating shaft extending from the top surface of the disc drive housing 216 is secured to the center hole of the worm gear. The top of the rotating shaft is secured to the center of the disc 24 and drives the disc 24 to rotate about the shaft axis. At least two protrusions 241 are symmetrically positioned outside the axis of the disc 24, aligning with two retaining holes 33 in the impeller hub 31 being machined and providing circumferential and radial positional limits. A transition plate 218 may be positioned between the top surface of the disc drive housing 216 and the disc 24. The transition plate 218 is secured to the rotating shaft and, in turn, is secured to the disc 24 using, for example, multiple screws (the screws are not shown; only four countersunk holes 243 for the large heads of the screws are shown).

[0059] The center of the indexing plate 24 has an axial center circular column 244 that mates with the inner circumference of the central blind hole 311 on the bottom surface of the hub 31 of the water meter impeller 3 being processed and is used to locate the center of the hub 31 of the water meter impeller 3. The indexing plate 24 also has a circular protrusion 242 that mates with the inner circumference of the convex ring 312 on the bottom surface of the hub 31 of the water meter impeller 3 being processed and is used to double-center the hub 31 of the water meter impeller 3.

[0060] On the other side of the platform 21 is a rotary compression cylinder seat 13. A rotary compression cylinder 25, used to compress the top surface of the center column 313 of the water meter impeller 3, is fixed to the top of the rotary compression cylinder seat 13. The specific compression mechanism can be as follows: a pressure block 252, used to compress the top surface of the center column 313 of the water meter impeller 3, is fixed to the bottom surface of the free end of the rocker arm 251 of the rotary compression cylinder 25. This pressure block 252 can be a screw with the large end of the screw being the pressure block 252. The screw's external threads screw into the threaded hole on the bottom surface of the free end of the rocker arm 313. The center column 313 can also be described as the center column 313 on the top surface of the hub 31 of the water meter impeller 3.

[0061] The nut-screw pair 23 is also called a nut-screw pair. The nut-screw pair 23 can also be a ball screw pair. The rotary pressing cylinder 25 is a commercially available product. The stepper motor can also be replaced by a servo motor.

[0062] like Figures 8-10 shown.

[0063] A bracket 14 is fixed to the base 11 at the rear end of the platform 21. In other words, a bracket 14 is fixed to the rear end of the top of the platform 21. The bottom of the vertical linear drive mechanism 4 is fixed to the bracket 14, such as the first bottom plate 43 fixed to the two columns and the second top plate 141 at the top of the bracket 14. The two columns of the vertical linear drive mechanism 4 also serve as vertical guide rails 42. The vertical sliding component 41 slides and fits on the two vertical guide rails 42 via two first sliders 411. The vertical nut 44 of the vertical linear drive mechanism 4 is fixed to the vertical sliding component 41. The two ends of the vertical screw rod 45 of the vertical linear drive mechanism 4 are rotatably fitted on the upper and lower vertical screw rod support seats 46 connected and fixed to the two columns. The output shaft of the third stepper motor 48, which is connected and fixed to the top of the two columns, such as fixed to the first top plate 47, is coaxially fixed to the top of the vertical screw rod 45. For the convenience of description, the base 11, cover 12, rotary pressing cylinder base 13 and bracket 14 mentioned above are collectively referred to as the support body 1. The upper vertical screw support seat 46 can be fixed to the first top plate 47 fixed to the vertical sliding component 41, and the lower vertical screw support seat 46 can be fixed to the first bottom plate 43. The vertical sliding component 41 is such as a first connecting plate.

[0064] Two transverse guide rails 52 are fixed to the vertical sliding component 41. The transverse sliding component 51 is slidably engaged with the two transverse guide rails 52 via two second sliders 511. The transverse nut 53 of the transverse linear drive mechanism 5 is fixed to the transverse sliding component 51. The two ends of the transverse screw 54 of the transverse linear drive mechanism 5 are rotatably engaged with the left and right transverse screw support seats 55 fixed to the vertical sliding component 51. The transverse screw support seat 55 at the left end can be fixed to the first side plate 56 fixed to the vertical sliding component 41, and the transverse screw support seat 55 at the right end can be fixed to the second side plate 57 fixed to the vertical transverse sliding component 41. The output shaft of the fourth stepper motor 58 fixed to the vertical sliding component 41, such as the first side plate 56, is coaxially fixed to the left end of the transverse screw 54. The transverse sliding component 51 is such as a second connecting plate.

[0065] A horizontal fixing plate 61 is fixed to the second connecting plate of the transverse sliding member 51. A fifth stepper motor 62 is mounted on this fixing plate. A fifth stepper motor output shaft 64, extending vertically from the fixing plate 61, is coaxially fixed to a cylindrical milling cutter 63 having a cutting edge on its bottom surface, such as by a chuck. The downward extension of the axis of the cylindrical milling cutter 63 is positioned midway between the front-to-back width of the transition lead surface 321 of the blade 32 of the water meter impeller 3 being machined. The fifth stepper motor output shaft 64 is also referred to as the output shaft of the fifth stepper motor 62.

[0066] The vertical direction can be referred to as the vertical direction. The horizontal direction can be referred to as the horizontal direction. It is easy to understand that the output extension plate refers to the through-hole in the plate. The first slider 411 and the second slider 511 can both be U-shaped sliders. Rolling bearings can be provided in both the vertical screw support seat 46 and the horizontal screw support seat 55.

[0067] A linear drive mechanism is also called a linear transmission mechanism. This mechanism can utilize a linear module, also known as a linear module. This mechanism can be composed of the aforementioned ball screw, linear guide rails, sliding components, a screw support, and a motor such as a stepper motor. It may also include couplings and photoelectric switches. A ball screw is also called a ball screw. A linear drive mechanism can also utilize a nut-screw pair. However, a linear module is preferred.

[0068] The present invention provides a transition lead surface milling device for water meter impeller blades, further comprising a main controller; a first angle sensor is mounted on the mounting plate, and a second angle sensor is mounted on the indexing plate; the first angle sensor, second angle sensor, first stepper motor, second stepper motor, third stepper motor, fourth stepper motor, fifth stepper motor, and rotary pressing cylinder are all electrically connected to the main controller. The main controller can be mounted within the base 11 of the transition lead surface milling device. As mentioned above, if the linear module includes a photoelectric switch, the main controller is also electrically connected to and controls the photoelectric switch. The main controller generally utilizes an MCU control chip, also known as a single-chip microcomputer, as is conventional. The MCU control chip receives electrical signals from the first angle sensor and controls the start and stop of the first stepper motor via a relay. The MCU control chip receives electrical signals from the second angle sensor and controls the start and stop of the second stepper motor and the start and stop and rotation of the rotary pressing cylinder via a relay. Of course, the main controller can also utilize a PLC, also known as a programmable logic controller.

[0069] Directional terms such as front, back, left, and right are for descriptive purposes only and are not intended to be limiting. The fixing is typically achieved by welding or by screwing with screws, bolts, or nuts. Articulated connections can be used interchangeably with pivotal or rotating connections. Mounting plate 26 may also be referred to as a connecting plate.

[0070] The above-mentioned parts, structures, quantities, etc. that are not marked are not shown in the drawings, and some parts are not marked. The drawings are for illustration only. If there is any inconsistency between the drawings and the text description or between the drawings, the text description shall prevail.

[0071] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A device for milling the transition lead surface of a water meter impeller blade, comprising a base, a cover fixed to the base, a vertical linear drive mechanism fixed to the base, and a horizontal linear drive mechanism fixed to a vertical sliding member of the vertical drive mechanism; characterized in that: It also includes a milling cutter rotation drive mechanism and a milling cutter fixed to the transverse sliding member of the transverse linear drive mechanism; The invention also includes a fixture for clamping and positioning the water meter impeller under the milling cutter; the fixture includes an angle adjustment seat fixed on the base, the outer end of the angle adjustment seat is hinged with a platform that can be tilted toward the operator, one end of a support arm is hinged with the bottom of the platform, the other end of the support arm is hinged with the nut of a nut-screw pair, one end of the screw of the nut-screw pair is provided with a driving device for driving the screw to rotate, one side of the platform is provided with a dividing plate driven to rotate by a motor, the top of the dividing plate is provided with a structure that limits the circumference and radial direction of the hub of the water meter impeller, and the other side of the platform is provided with a rotary pressing cylinder for axially pressing the center of the water meter impeller when the upper milling cutter mills the transition lead surface of a blade of the water meter impeller, and releasing the water meter impeller when rotating the water meter impeller; The front panel of the closed cover is provided with a window for hands to insert in order to place or take out the processed water meter impeller, and the front panel of the base is provided with two start button switches for turning on the power supply by pressing two hands at the same time.

2. The transition lead surface milling device for water meter impeller blades according to claim 1, characterized in that: The minimum distance between the two start button switches is 30 cm.

3. The transition lead surface milling device for water meter impeller blades according to claim 1, characterized in that: A mounting plate is fixed to the bottom of one of the two sides of the platform, and the bottom of the mounting plate is fixed to the top of the two supporting legs. The bottom ends of the two supporting legs have respective screw through holes, and two fastening screws that also serve as hinge shafts pass through their respective screw through holes and screw into the threaded holes on both sides of the angle adjustment seat.

4. The transition lead surface milling device for water meter impeller blades according to claim 1, characterized in that: There are two bearing seats at the inner and outer ends of the angle adjustment seat. The two ends of the screw rod are installed on their respective bearing seats through their respective rolling bearings. The nut of the nut-screw pair is a rectangular slider. The rectangular slider slides in the grooved slide rail of the angle adjustment seat below the screw rod. The first stepper motor that drives the screw rod to rotate is fixed on the bearing seat at the inner end. The lower ends of the two arm rods of the support arm are respectively hinged through the first hinge pins fixed on both sides of the upper part of the rectangular slider, and the upper ends of the two arm rods of the support arm are respectively hinged through the two second hinge pins fixed on the bottom surface of the mounting plate.

5. The transition lead surface milling device for water meter impeller blades according to claim 4, characterized in that: The bottom surface of the mounting plate has two longitudinal grooves for accommodating part of the two arm rods when the mounting plate and the platform are swung down. A lower convex plate is fixed on the bottom surface of the mounting plate between the two longitudinal grooves for fixing the two second hinge pins. The two second hinge pins are fixed on both sides of the lower convex plate and on the two groove walls. The top parts of the upper ends of the two arm rods of the support arm hinged on the two second hinge pins are accommodated in their respective longitudinal grooves.

6. The transition lead surface milling device for water meter impeller blades according to claim 5, characterized in that: There is a dividing plate drive box on one side of the platform. The output shaft of the second stepper motor fixed on the outside of the dividing plate drive box is coaxially fixed with a worm. The worm wheel engaged with the worm is rotatably installed in the dividing plate drive box. A rotating shaft extending from the top surface of the dividing plate drive box is fixed to the center hole of the worm wheel. The top of the rotating shaft is fixed to the center of the dividing plate of the drive box and drives the dividing plate to rotate around the axis of the rotating shaft. At least two protrusions that match the two limiting holes on the impeller hub to be processed and limit both circumferentially and radially are symmetrically provided on the outside of the axis of the dividing plate.

7. The transition lead surface milling device for water meter impeller blades according to claim 1, characterized in that: There is a central circular column in the center of the dividing plate, which matches the inner circle of the central blind hole on the bottom surface of the water meter impeller hub being processed and is used to locate the center of the water meter impeller hub; there is also a circular protrusion on the dividing plate, which matches the inner circle of the convex ring of the hub on the bottom surface of the water meter impeller hub being processed and is used to double-center the water meter impeller hub.

8. The transition lead surface milling device for water meter impeller blades according to claim 1, characterized in that: A rotary pressing cylinder seat is provided on the other side of the platform, and a rotary pressing cylinder for pressing the top surface of the central column of the water meter impeller is fixed on the top of the rotary pressing cylinder seat.

9. The transition lead surface milling device for water meter impeller blades according to claim 6, characterized in that: A bracket is fixed on the base at the rear end of the platform, the bottom of the vertical linear drive mechanism is fixed on the bracket, the two columns of the vertical linear drive mechanism also serve as vertical guide rails, the vertical sliding component is slidably fitted on the two vertical guide rails, the vertical nut of the vertical linear drive mechanism is fixed to the vertical sliding component, the two ends of the vertical screw rod of the vertical linear drive mechanism are rotatably fitted on the upper and lower vertical screw rod support seats connected and fixed to the two columns, and the output shaft of the third stepping motor connected and fixed to the top ends of the two columns is coaxially fixed to the top end of the vertical screw rod; Two transverse guide rails are fixed to the vertical sliding component, the transverse sliding component is slidably engaged with the transverse guide rails, a transverse nut of the transverse linear drive mechanism is fixed to the transverse sliding component, both ends of the transverse screw of the transverse linear drive mechanism are rotatably engaged with left and right transverse screw support seats fixed to the vertical sliding component, and an output shaft of a fourth stepper motor fixed to the vertical sliding component is coaxially fixed to the right end of the transverse screw; A horizontal fixed plate is fixed on the transverse sliding component, and a fifth stepper motor is installed on the horizontal fixed plate. The output shaft of the fifth stepper motor extending vertically out of the horizontal fixed plate is coaxially fixed with a cylindrical milling cutter with a cutting edge on the bottom surface. The downward extension line of the axis of the cylindrical milling cutter is located in the middle of the front and rear width of the transition lead surface of the water meter impeller blade being processed.

10. The transition lead surface milling device for water meter impeller blades according to claim 9, characterized in that: It also includes a main controller; a first angle sensor is provided on the mounting plate, and a second angle sensor is provided on the dividing plate; the first angle sensor, the second angle sensor, the first stepper motor, the second stepper motor, the third stepper motor, the fourth stepper motor, the fifth stepper motor and the rotary pressing cylinder are all electrically connected to the main controller.

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