Milling cutter dust collection integrated device for dynamic balancing machine

Abstract

The present invention discloses a milling cutter dust collection integrated device for a dynamic balancing machine, comprising: a milling drive mechanism, which is connected to a rotating shaft by rotational drive; a lower shell, which is fixed at the bottom of the milling drive mechanism, and a dust collecting chamber is arranged inside, and an inlet and an outlet pipe connected to an external negative pressure system are extended from the dust collecting chamber; an end mill, whose end is clamped on the rotating shaft, and the other end extends out of the lower shell from the inlet; a dust collecting hood, which is located at the inlet of the lower shell, and the milling end of the end mill is located in the inner cavity of the dust collecting hood, and an opening connected to the inner cavity is arranged on one side of the bottom of the dust collecting hood; a milling depth control mechanism, which includes a limit plate and a lifting drive mechanism. The present invention can realize precise docking with the rotor surface and structural guidance during the milling process, and radially limit the end mill and the rotating shaft to avoid the problem of out-of-tolerance in rotor milling processing, and the device has a debris dust adsorption function, which blocks and adsorbs the rotor debris ejected by milling, and ensures dust collection efficiency and processing neatness.

Description

Technical Field

[0001] The invention relates to the technical field of intelligent manufacturing equipment, and in particular to an integrated milling cutter dust collection device for a dynamic balancing machine. Background Art

[0002] In a rotating drive device such as an engine, an unbalanced rotor will exert pressure on its supporting structure and the rotor itself during its rotation, causing vibration. Therefore, dynamic balancing of the rotor is very necessary, and a dynamic balancing machine is a commonly used device for dynamic balancing of the rotor in a rotating state.

[0003] The main performance of the dynamic balancing machine is measured by two comprehensive indicators: the minimum achievable residual unbalance and the unbalance reduction rate. The former is the minimum value of the residual unbalance that the balancing machine can make the rotor reach, which is an indicator to measure the highest balancing ability of the balancing machine; the latter is the ratio of the unbalance reduced after one correction to the initial unbalance. The device generally includes the operation of measuring the rotor unbalance and the correction operation of the rotor shape processing and center of gravity adjustment based on the difference between the required unbalance and the initial measured unbalance. The rotor correction can be achieved by milling with a milling cutter.

[0004] At present, the stability of the docking between the common milling device and the rotor surface, the vibration of the milling cutter and the drive shaft connected to the milling cutter during rotational milling, and the radial shaking control is not high, resulting in obvious out-of-tolerance problems in the rotor after milling; and during the milling process, the rotor debris and dust particles generated by milling are ejected and splashed outward, resulting in poor cleanliness of the processing area, increased cleaning costs, and serious pollution to the workshop environment. Summary of the invention

[0005] The purpose of the present invention is to provide an integrated milling cutter dust collection device for a dynamic balancing machine in order to solve the problems of docking between a common milling device and a rotor surface, vibration of a milling cutter and a drive shaft connected to the milling cutter during rotational milling, and low stability of radial shaking control, resulting in obvious out-of-tolerance problems in the rotor after milling, and rotor debris and dust particles generated by milling during milling that are ejected and splashed outward, resulting in poor cleanliness of the processing area, increased cleaning costs, and serious pollution to the workshop environment.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a milling cutter dust collection integrated device for a dynamic balancing machine, comprising:

[0007] A milling drive mechanism, wherein a rotating shaft is provided inside the mechanism for rotational drive;

[0008] A lower housing, which is fixed to the bottom of the milling drive mechanism by bolts or pins, and has a dust collecting chamber disposed therein, an inlet disposed at the bottom of the dust collecting chamber, and an outlet pipe extending from the side thereof, the outlet pipe being connected to an external negative pressure system;

[0009] An end milling cutter, one end of which is clamped on the outer end of the rotating shaft, and the other end of which extends out of the lower housing through the dust collecting chamber and the inlet;

[0010] A dust collecting hood is assembled at the inlet of the lower shell by bolts or pins, the milling end of the end mill is located in the inner cavity of the dust collecting hood, and an opening communicating with the inner cavity is arranged on one side of the bottom of the dust collecting hood;

[0011] The milling depth control mechanism comprises a limit plate arranged at the bottom of the lower shell and a lifting drive mechanism for driving the limit plate to move along the axial direction of the end mill.

[0012] As a further description of the above technical solution:

[0013] The outlet pipe is provided with a transparent viewing window.

[0014] As a further description of the above technical solution:

[0015] A clamping sleeve is arranged at the inner end of the end mill, and a plurality of clamping grooves are arranged inside the clamping sleeve, and a conical clamping block extending from the outer end of the rotating shaft is correspondingly inserted into the clamping groove.

[0016] As a further description of the above technical solution:

[0017] A cavity is formed between the plurality of conical clamping blocks, and the limiting column extending from the inner side of the clamping sleeve is embedded in the cavity.

[0018] As a further description of the above technical solution:

[0019] The opening is a stepped structure, and the dust collecting hood is provided with a blocking plate at one side of the opening.

[0020] As a further description of the above technical solution:

[0021] A sleeve opening is arranged in the center of the limiting plate, and the sleeve opening is sleeved on the outside of the dust collecting cover.

[0022] As a further description of the above technical solution:

[0023] The limit plate is an L-shaped structure, and a side plate is assembled on its side by bolts or pins. The side plate is assembled on the telescopic shaft of the lifting drive mechanism by bolts or pins, and the lifting drive mechanism is assembled on the side of the milling drive mechanism by a bracket.

[0024] As a further description of the above technical solution:

[0025] A radial limiting frame is also arranged in the dust collecting chamber, one side of the radial limiting frame is fixed in the lower shell body through a connecting shaft, the radial limiting frame is sleeved on the outer end of the rotating shaft, and a pre-tightening member is arranged between the radial limiting frame and the rotating shaft.

[0026] As a further description of the above technical solution:

[0027] The preload member is an elastic ring.

[0028] As a further description of the above technical solution:

[0029] The pre-tightening member is a magnet, and the outer end of the rotating shaft is sleeved with an electromagnet or a coil connected to an external circuit at a position corresponding to the pre-tightening member.

[0030] In summary, due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0031] 1. This device is used for the rotor shape correction mechanism of the dynamic balancing machine. The dust hood cooperates with the opening on one side of its bottom to accurately and stably dock and position the whole device, the end mill and the multi-faceted rotor to be milled. The milling depth control mechanism drives the limit plate to move along the axial direction of the end mill to control the initial spacing between the limit plate and the milling surface of the rotor, that is, the milling depth is preset to ensure the accuracy of milling processing and the control of the rotor shape, quality, and imbalance during rotation, or directly abuts against the rotor surface and moves up synchronously with the milling process of the end mill to ensure milling stability. At the same time, the external negative pressure system creates negative pressure inside the lower shell and the dust hood, and the dust particles and debris generated by milling are sucked into the device for unified collection and treatment. Among them, the limit plate can block the rotor debris ejected by milling, so that it is within the adsorption range of the device, ensuring dust collection efficiency and processing neatness.

[0032] 2. By setting a radial limit frame in the dust collecting chamber, the exposed end of the shaft is radially limited when driven to rotate, so as to avoid excessive vibration amplitude, which causes the vibration to be amplified exponentially and transmitted to the end mill, thereby causing the milling area to have excessive tolerance, affecting the milling quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 The present invention is a three-dimensional diagram of a milling cutter dust collection integrated device of a dynamic balancing machine when placed upright.

[0035] Figure 2 The present invention is a front view of a milling cutter dust collection integrated device of a dynamic balancing machine when it is placed flat.

[0036] Figure 3 The present invention is a top view of a milling cutter dust collection integrated device of a dynamic balancing machine when placed upright.

[0037] Figure 4 The integrated device for dust collection of milling cutter of a dynamic balancing machine is used for laying flat. Figure 3 Front view section at section AA.

[0038] Figure 5 The present invention is a front view cross-section diagram of an end milling cutter in a milling cutter dust collection integrated device of a dynamic balancing machine when the end milling cutter is placed flat.

[0039] Figure 6 The present invention is a front cross-sectional view of a dust collecting hood in a milling cutter dust collecting integrated device of a dynamic balancing machine when the dust collecting hood is placed flat.

[0040] Figure 7 The present invention is a front cross-sectional view of a limit plate of a milling depth control mechanism in a milling cutter dust suction integrated device of a dynamic balancing machine when the limit plate is placed flat.

[0041] Legend:

[0042] 1. Milling drive mechanism; 2. Lower shell; 21. Dust collecting chamber; 22. Outlet pipe; 23. Transparent viewing window; 3. Rotating shaft; 31. Conical clamping block; 32. Cavity; 4. End mill; 41. Clamping sleeve; 42. Clamping groove; 43. Limiting column; 5. Dust collecting hood; 51. Inner cavity; 52. Opening; 53. Sealing plate; 6. Milling depth control mechanism; 60. Socket; 61. Side plate; 62. Lifting drive mechanism; 63. Telescopic shaft; 64. Bracket; 7. Radial limiting frame; 8. Preload member. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] Embodiment 1:

[0046] See also Figure 1-7 The present invention provides a technical solution: a milling cutter dust collection integrated device for a dynamic balancing machine, comprising:

[0047] The milling drive mechanism 1 has a rotating shaft 3 provided for internal rotational drive;

[0048] The lower housing 2 is fixed to the bottom of the milling drive mechanism 1 by bolts or pins, and a dust collecting chamber 21 is arranged inside. The bottom of the dust collecting chamber 21 is provided with an inlet, and an outlet pipe 22 extends from the side thereof, and the outlet pipe 22 is connected to an external negative pressure system;

[0049] An end mill 4, one end of which is clamped on the outer end of the rotating shaft 3, and the other end of which extends out of the lower housing 2 through the dust collecting chamber 21 and the inlet;

[0050] A dust hood 5 is assembled at the inlet of the lower shell 2 by bolts or pins, the milling end of the end mill 4 is located in the inner cavity 51 of the dust hood 5, and an opening 52 communicating with the inner cavity 51 is provided at one side of the bottom of the dust hood 5;

[0051] The milling depth control mechanism 6 includes a limit plate arranged at the bottom of the lower housing 2 and a lifting drive mechanism 62 for driving the limit plate to move axially along the end mill 4. In this embodiment, the drive mechanism adopts one or more of a motor, a cylinder or a hydraulic cylinder corresponding to a telescopic or rotary drive mode. The outer side of the milling cutter dust suction integrated device is connected to a mechanical arm that drives it to adjust its three-dimensional position.

[0052] This device is used for the rotor shape correction mechanism of the dynamic balancing machine. The dust hood cooperates with the opening on one side of its bottom to accurately and stably dock and position the whole device, the end mill and the multi-faceted rotor to be milled. The milling depth control mechanism drives the limit plate to move along the axial direction of the end mill to control the initial spacing between the limit plate and the milling surface of the rotor, that is, the milling depth is preset to ensure the accuracy of milling processing and the control of the rotor shape, quality, and imbalance during rotation, or directly abuts against the rotor surface and moves up synchronously with the milling process of the end mill to ensure milling stability. At the same time, the external negative pressure system forms a negative pressure inside the lower shell and the dust hood, and the dust particles and debris generated by milling are sucked into the device for unified collection and treatment. Among them, the limit plate can block the rotor debris ejected by milling, so that it is within the adsorption range of the device, ensuring dust collection efficiency and processing neatness.

[0053] The outlet pipe 22 is provided with a transparent viewing window 23 to improve the visualization of the operation of the rotating shaft 3 and the end mill 4 and the environment in the dust collecting chamber 21, thereby facilitating timely adjustment of the device and improving the milling efficiency and quality.

[0054] A ferrule 41 is provided at the inner end of the end mill 4, and a plurality of slots 42 are provided inside the ferrule 41. The tapered block 31 extending from the outer end of the shaft 3 is correspondingly inserted into the slot 42. A cavity 32 is formed between the tapered blocks 31, and a limiting column 43 extending from the inner side of the ferrule 41 is embedded in the cavity 32. The mortise and tenon connection structure ensures the tightness and stability of the connection, avoids the misalignment of the structures when the shaft 3 drives the end mill 4 to rotate and mill the rotor, thereby ensuring the quality and accuracy of the milling process.

[0055] The opening 52 is a stepped structure, and the dust collecting cover 5 is provided with a blocking plate 53 on one side of the opening 52, thereby facilitating docking and positioning of rotors with different surface shapes, thereby ensuring milling quality.

[0056] A sleeve opening 60 is arranged at the center of the limiting plate, and the sleeve opening 60 is sleeved on the outside of the dust collecting cover 5 .

[0057] The limit plate is an L-shaped structure, and a side plate 61 is installed on its side by bolts or pins. The side plate 61 is installed on the telescopic shaft 63 of the lifting drive mechanism 62 by bolts or pins. The lifting drive mechanism 62 is installed on the side of the milling drive mechanism 1 by a bracket 64, thereby ensuring the movement of the limit plate along the axial direction of the end mill 4 and the stability of the subsequent structural shaping, thereby ensuring the milling quality.

[0058] When the device of this embodiment is used, after the dynamic balancing machine measures the unbalance amount of the rotor and determines the milling area and depth of the rotor, the device is moved to the rotor surface by an external mechanical arm, and the stepped opening 52 cooperates with the end mill 4 to abut against the rotor surface. The milling depth control mechanism 6 drives the limit plate to move axially along the end mill 4 to control the initial spacing between the limit plate and the rotor milling surface, that is, the milling depth is preset to ensure the accuracy of the milling process and the rotor shape, quality, and unbalance control during rotation, or directly abuts against the rotor surface and moves along with the end mill. 4 moves upward synchronously during the milling process to ensure milling stability; the external negative pressure system allows the airflow to flow along the opening 52, the inner cavity 51, the dust collecting cavity 21, and the outlet pipe 22 in sequence, so that negative pressure is formed inside the device, the milling drive mechanism 1 drives the rotating shaft 3 to rotate, and the end mill 4 rotates synchronously to mill the rotor surface, and the dust particles and debris generated by milling are blocked by the dust collecting hood 5 and the limit plate of the milling depth control mechanism 6, and are trapped in the adsorption area of ​​the device, and the airflow drives the dust and debris to be uniformly collected through the device and guided to the external dust bin.

[0059] Embodiment 2:

[0060] See also Figure 4 On the basis of the above-mentioned embodiment 1, preferably, a radial limit frame 7 is further provided in the dust collecting chamber 21, one side of the radial limit frame 7 is fixed in the lower shell body 2 through a connecting shaft 71, the radial limit frame 7 is sleeved on the outer end of the rotating shaft 3, and a preload member 8 is provided between the radial limit frame 7 and the rotating shaft 3. This design is used to radially limit the exposed end of the rotating shaft 3 when driving the rotation, so as to avoid excessive vibration amplitude, resulting in the vibration being amplified exponentially and transmitted to the end mill 4, thereby causing excessive tolerance in the milling area, affecting the processing problem of milling quality.

[0061] In this embodiment, Figure 4 The schematic diagram of the structure of the device after being erected, the size of the lower end surface inside the radial limit frame 7 is smaller than the size of the upper end surface of the entire ferrule 41, thereby concealing the above-mentioned shaft limiting structure to prevent the inflow of debris and dust from being embedded, resulting in the problem of unstable radial limiting effect of the structure.

[0062] When the rotor milling area is made of paramagnetic or diamagnetic material, the preload member 8 is an elastic ring, which should not have magnetic properties or adsorption capabilities during friction.

[0063] Among them, when the rotor milling area is made of anti-magnetic material, the preload 8 is a ring-shaped magnet, and the outer end of the rotating shaft 3 is sleeved with an electromagnet or coil connected to an external circuit at the corresponding position of the preload 8, so that when the rotating shaft 3 vibrates and deviates from its axis to a certain extent, the magnetic force of attraction or repulsion between the structures stabilizes it again within a reasonable range to ensure the milling quality.

[0064] In summary, due to the adoption of the above technical solution, the integrated milling cutter dust collection device of a dynamic balancing machine of this embodiment has the following beneficial effects compared with the prior art:

[0065] 1. This device is used for the rotor shape correction mechanism of the dynamic balancing machine. The dust hood cooperates with the opening on one side of its bottom to accurately and stably dock and position the whole device, the end mill and the multi-faceted rotor to be milled. The milling depth control mechanism drives the limit plate to move along the axial direction of the end mill to control the initial spacing between the limit plate and the milling surface of the rotor, that is, the milling depth is preset to ensure the accuracy of milling processing and the control of the rotor shape, quality, and imbalance during rotation, or directly abuts against the rotor surface and moves up synchronously with the milling process of the end mill to ensure milling stability. At the same time, the external negative pressure system creates negative pressure inside the lower shell and the dust hood, and the dust particles and debris generated by milling are sucked into the device for unified collection and treatment. Among them, the limit plate can block the rotor debris ejected by milling, so that it is within the adsorption range of the device, ensuring dust collection efficiency and processing neatness.

[0066] 2. By setting a radial limit frame in the dust collecting chamber, the exposed end of the shaft is radially limited when driven to rotate, so as to avoid excessive vibration amplitude, which causes the vibration to be amplified exponentially and transmitted to the end mill, thereby causing the milling area to have excessive tolerance, affecting the milling quality.

[0067] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A milling cutter dust collection integrated device for a dynamic balancing machine, characterized in that: include: A milling drive mechanism, wherein a rotating shaft is provided inside the mechanism for rotational drive; A lower housing, which is fixed to the bottom of the milling drive mechanism by bolts or pins, and has a dust collecting chamber disposed therein, an inlet disposed at the bottom of the dust collecting chamber, and an outlet pipe extending from the side thereof, the outlet pipe being connected to an external negative pressure system; An end milling cutter, one end of which is clamped on the outer end of the rotating shaft, and the other end of which extends out of the lower housing through the dust collecting chamber and the inlet; A ferrule is arranged at the inner end of the end mill, and a plurality of slots are arranged inside the ferrule, and a conical block extending from the outer end of the rotating shaft is correspondingly inserted into the slots; A cavity is formed between the plurality of the conical clamping blocks, and a limiting column extending from the inner side of the clamping sleeve is embedded in the cavity; A radial limit frame is also arranged in the dust collecting chamber, one side of the radial limit frame is fixed in the lower housing through a connecting shaft, the radial limit frame is sleeved on the outer end of the rotating shaft, and a pre-tightening member is arranged between the radial limit frame and the rotating shaft; A dust hood is assembled at the inlet of the lower shell by bolts or pins, the milling end of the end mill is located in the inner cavity of the dust hood, an opening communicating with the inner cavity is arranged on one side of the bottom of the dust hood, the opening is a stepped structure, and a blocking plate is arranged on one side of the opening of the dust hood; A milling depth control mechanism, comprising a limit plate arranged at the bottom of the lower housing and a lifting drive mechanism for driving the limit plate to move along the axial direction of the end mill; When in use, the external negative pressure system causes the airflow to flow along the opening, inner cavity, dust collecting cavity and outlet pipe in sequence, so that negative pressure is formed inside the device. The milling drive mechanism drives the rotating shaft to rotate, and the end mill rotates synchronously to perform milling on the rotor surface. The dust particles and debris generated by milling are blocked by the dust collecting hood and the limit plate of the milling depth control mechanism, and are trapped in the adsorption area of ​​the device. The airflow drives the dust and debris to be uniformly collected through this device and guided to the dust bin of the external device.

2. The integrated milling cutter dust collection device of a dynamic balancing machine according to claim 1, characterized in that: The outlet pipe is provided with a transparent viewing window.

3. The integrated milling cutter dust collection device of a dynamic balancing machine according to claim 1, characterized in that: A sleeve opening is arranged in the center of the limiting plate, and the sleeve opening is sleeved on the outside of the dust collecting cover.

4. The integrated milling cutter dust collection device of a dynamic balancing machine according to claim 1, characterized in that: The limit plate is an L-shaped structure, and a side plate is assembled on its side by bolts or pins. The side plate is assembled on the telescopic shaft of the lifting drive mechanism by bolts or pins, and the lifting drive mechanism is assembled on the side of the milling drive mechanism by a bracket.

5. The integrated milling cutter dust collection device of a dynamic balancing machine according to claim 1, characterized in that: The pre-tightening member is an elastic ring.

6. The integrated milling cutter dust collection device of a dynamic balancing machine according to claim 1, characterized in that: The pre-tightening member is a magnet, and the outer end of the rotating shaft is sleeved with an electromagnet or a coil connected to an external circuit at a position corresponding to the pre-tightening member.

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