CN111237449A - Pneumatic type machining center main shaft speed regulator - Google Patents

Pneumatic type machining center main shaft speed regulator Download PDF

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Publication number
CN111237449A
CN111237449A CN202010130490.2A CN202010130490A CN111237449A CN 111237449 A CN111237449 A CN 111237449A CN 202010130490 A CN202010130490 A CN 202010130490A CN 111237449 A CN111237449 A CN 111237449A
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CN
China
Prior art keywords
cylinder
gear
speed regulator
low
reversing valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202010130490.2A
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Chinese (zh)
Other versions
CN111237449B (en
Inventor
李富强
刘军波
周岩
杜研
陈萌
杨文敬
宋文涛
王元臣
崔涛
胡士国
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Sinotruk Jinan Power Co Ltd
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Sinotruk Jinan Power Co Ltd
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Priority to CN202010130490.2A priority Critical patent/CN111237449B/en
Publication of CN111237449A publication Critical patent/CN111237449A/en
Application granted granted Critical
Publication of CN111237449B publication Critical patent/CN111237449B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H63/00Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30Constructional features of the final output mechanisms
    • F16H63/32Gear shift yokes, e.g. shift forks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/70Stationary or movable members for carrying working-spindles for attachment of tools or work
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20Other details, e.g. assembly with regulating devices
    • F15B15/202Externally-operated valves mounted in or on the actuator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08Servomotor systems incorporating electrically operated control means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/04Smoothing ratio shift
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/12Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/26Generation or transmission of movements for final actuating mechanisms
    • F16H61/28Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
    • F16H61/30Hydraulic or pneumatic motors or related fluid control means therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H63/00Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30Constructional features of the final output mechanisms
    • F16H63/34Locking or disabling mechanisms
    • F16H63/3416Parking lock mechanisms or brakes in the transmission
    • F16H63/3483Parking lock mechanisms or brakes in the transmission with hydraulic actuating means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H63/00Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/40Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
    • F16H63/44Signals to the control unit of auxiliary gearing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/12Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
    • F16H2061/1208Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures with diagnostic check cycles; Monitoring of failures
    • F16H2061/1216Display or indication of detected failures
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/26Generation or transmission of movements for final actuating mechanisms
    • F16H61/28Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
    • F16H61/30Hydraulic or pneumatic motors or related fluid control means therefor
    • F16H2061/308Modular hydraulic shift units, i.e. preassembled actuator units for select and shift movements adapted for being mounted on transmission casing

Abstract

The invention discloses a pneumatic type machining center main shaft speed regulator, which comprises a speed regulator main body, wherein two ends of the speed regulator main body are connected with a high-grade cylinder and a low-grade cylinder through cylinder supports, a shifting fork shaft penetrating through two end faces of the speed regulator main body is arranged between the high-grade cylinder and the low-grade cylinder, two end faces of the speed regulator main body are provided with gear in-place signal switches, a speed regulator shifting fork extending out of the speed regulator main body downwards is arranged on the shifting fork shaft inside the speed regulator main body, one side face of the speed regulator main body is provided with a locking cylinder, the output end of the locking cylinder is provided with a locking piece extending into the speed regulator main body, the other side face of the locking cylinder is provided with an electric control board assembly electrically connected with the gear in-place signal switches, the top face of the speed regulator. The cylinder promotes to make high-low gear switch nimble, steady, locks the cylinder and prevents scurrying the shelves, and machine tool machining is accurate, can carry out the processing of difficult complicated technology.

Description

Pneumatic type machining center main shaft speed regulator
Technical Field
The invention belongs to the field of speed regulator equipment, and particularly relates to a pneumatic machining center main shaft speed regulator.
Background
With the sudden and violent advance of the machining industry, the requirement on machining precision is particularly high, high-speed and low-speed conversion is frequent for a numerical control machining center which uses a spindle motor to be connected with a gearbox for machining, gear abrasion is easily caused by overlarge power of a speed regulator when the gearbox is switched, the service life of the gearbox is shortened, and the imported speed regulator is filled with sealant due to technical protection reasons, so that once the imported speed regulator is damaged, the imported speed regulator cannot be repaired, can only be scrapped and purchased again, and the economic waste and maintenance cost is greatly increased.
In the prior art, in order to ensure that the high and low rotating speeds of a main shaft gearbox of a machining center are unstable and shift-fleeing, people usually directly use elements to electrify and lock gears for a long time to prevent shift-fleeing, so that the components are easily damaged and the stability of the gears is difficult to ensure when the elements are electrified for a long time; some people propose to use the hydraulic control speed regulator, this method not only is complicated, the price is expensive, there is such as hydraulic pressure is big, the strong gear shifting very easily causes the danger in the aspect of gear-striking, has reduced the life of gearbox moreover.
Disclosure of Invention
In order to solve the problem that abrasion is easily caused by gear shifting when machine tool machining is frequently switched between high speed and low speed, the invention provides the pneumatic type machining center main shaft speed regulator which is flexible and stable in operation and meets the requirement of precision machining.
The invention is realized by the following technical scheme.
A pneumatic machining center main shaft speed regulator comprises a speed regulator main body, wherein two ends of the speed regulator main body are connected with a high-grade cylinder and a low-grade cylinder through cylinder supports, a shifting fork shaft passing through two end faces of the speed regulator main body is arranged between the high-grade cylinder and the low-grade cylinder, two end faces of the speed regulator main body are provided with gear in-place signal switches, a speed regulator shifting fork which extends out of the speed regulator main body downwards is arranged on a shifting fork shaft in the speed regulator main body, one side surface of the speed regulator main body is provided with a locking cylinder, the output end of the locking cylinder is provided with a locking piece which extends into the speed regulator main body and fixes the shifting fork shaft, the other side surface is provided with an electric control board assembly which is electrically connected with the gear in-place signal switch, the top surface of the speed regulator main body is provided with a reversing valve group electrically connected with the electric control board assembly, and the high-grade cylinder, the low-grade cylinder and the locking cylinder are communicated with the reversing valve group through pipelines. The gas action is used for the alternative promotion of high-grade cylinder and low-grade cylinder to the declutch shift shaft under the switching-over valves regulation, drives the speed regulator shift fork and accomplishes the gear switching of high-low speed, locks the declutch shift shaft position under the effect of locking cylinder, prevents to scurry the shelves, has guaranteed the accuracy nature and the stability of processing, prevents to cause the emergence of the impaired serious fault of lathe cutter because of scurring the shelves reason. The gear in-place signal switch is convenient for judging later-period faults.
The invention is further improved in that an air path assembly plate communicated with the reversing valve group is arranged between the reversing valve group and the top surface of the speed regulator main body, and an air inlet pipe orifice communicated with the interior of the air path assembly plate is arranged on the side surface of the air path assembly plate. And the communication between an external air source and the reversing valve group is completed through the air path assembly plate.
The invention further improves the reversing valve group, and the reversing valve group comprises a high-grade cylinder reversing valve, a low-grade cylinder reversing valve and a locking cylinder reversing valve which are respectively and electrically connected with an electric control board assembly, wherein the high-grade cylinder reversing valve is communicated with a high-grade cylinder through a pipeline, the low-grade cylinder reversing valve is communicated with a low-grade cylinder through a pipeline, and the locking cylinder reversing valve is communicated with a locking cylinder through a pipeline. And the air passages are respectively communicated with different air cylinders through all the reversing valves.
The invention further improves the structure that the shaft body of the shifting fork shaft in the speed regulator main body is provided with a high-gear positioning groove and a low-gear positioning groove which are separated from each other, the high-gear positioning groove is close to one end of the high-gear cylinder, and the low-gear positioning groove is close to one end of the low-gear cylinder. The positioning groove is convenient for fixing the position of the shifting fork shaft moving to one end.
In a further improvement of the invention, the distance between the high-gear positioning groove and the low-gear positioning groove is equal to the movable distance of the shifting fork shaft on the speed regulator main body.
The invention further improves that the output end of the locking cylinder is provided with a locking pin which is matched with the high-gear positioning groove and the low-gear positioning groove. The locking and releasing of the shifting fork after one axial end of the shifting fork moves in place are completed through the matching of the stretching of the locking pin and the corresponding positioning groove.
The invention further improves that the outside of the locking pin is provided with a guide sleeve arranged on the inner end of the locking cylinder. The guide sleeve is convenient for completing the butt joint of the locking cylinder and the speed regulator main body, and then the locking and releasing of the locking pin and the positioning groove on the shifting fork shaft are completed.
The invention is further improved in that the gear in-place signal switch comprises a high gear in-place signal switch and a low gear in-place signal switch, the high gear in-place signal switch is close to one end of the low gear cylinder, the low gear in-place signal switch is close to one end of the high gear cylinder, and the high gear in-place signal switch and the low gear in-place signal switch are respectively electrically connected with the electric control board circuit assembly. The high-gear in-place signal switch and the low-gear in-place signal switch are electrically connected with the electric control board assembly. When the high-grade cylinder pushes the shifting fork to move towards the low-grade cylinder, the speed regulator shifting fork assists to complete the meshing of the high-speed gear under the shifting of the shifting fork shaft, and a high-grade in-place signal switch is triggered; and vice versa.
The invention further improves the electric control board assembly, a pin-shaped control circuit integrated plug is arranged on the electric control board assembly, a DC24V power supply is connected to the control circuit integrated plug, and the reversing valve group and the gear in-place signal switch are respectively connected with the control circuit integrated plug through wiring harnesses. The electric control board assembly is communicated with the reversing valve group and the signal on-off power supply through a control circuit integrated plug and a wiring harness.
The invention has the beneficial effects that: 1. make high-grade cylinder and low-grade cylinder to the alternative promotion of declutch shift shaft under the effect of switching-over valves, drive the speed regulator shift fork and accomplish the gear switching of high-low speed, lock the declutch shift shaft position under the effect of locking cylinder, prevent scurrying the shelves, guaranteed the stability of processing, prevent to cause the emergence of the impaired serious fault of lathe cutter because of scurrying the shelves reason. 2. The gear in-place signal switch is convenient for judging later-period faults. 3. The speed regulator shifting fork and the shifting fork shaft are accurately and stably controlled through pneumatic pushing and pneumatic locking, flexible and stable speed change switching of the gearbox is guaranteed, high and low gear signals are transmitted quickly and accurately, precision machining of a machine tool is facilitated, and high-difficulty complex process machining can be achieved.
Drawings
Fig. 1 is a schematic structural diagram of the whole of the embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a cylinder propulsion system according to an embodiment of the present invention.
Fig. 3 is a schematic view of a governor fork according to an embodiment of the present invention.
FIG. 4 is a schematic diagram of electrical control components in accordance with an embodiment of the present invention.
Fig. 5 is a schematic view of a reversing valve assembly according to an embodiment of the invention.
FIG. 6 is a schematic view of a lock cylinder according to an embodiment of the present invention.
In the drawings: 1. the high-gear air cylinder assembly comprises a high-gear air cylinder, 2, an air inlet pipe orifice, 3, a reversing valve group, 4, an air path assembly plate, 5, a speed regulator main body, 6, an air cylinder support, 7, a low-gear air cylinder, 8, a locking air cylinder, 9, an electrical control board assembly, 10, a gear in-place signal switch, 11, a shifting fork shaft, 12, an installation plate, 13, a speed regulator shifting fork, 14, a locking pin, 15, a guide sleeve, 16, an installation cover plate, 17, a low-gear in-place signal switch, 18, a high-gear air cylinder installation support, 19, a low-gear air cylinder installation support, 20, a high-gear in-place signal switch, 21, a high-gear switching reversing valve, 22, a low-gear switching reversing valve, 23, a locking air.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
As shown in the accompanying drawings, a pneumatic machining center spindle speed regulator is a speed regulator main body 5, two ends of the speed regulator main body 5 are connected with a high-grade cylinder 1 and a low-grade cylinder 7 through cylinder supports 6, each cylinder support 6 comprises a high-grade cylinder mounting support 18 and a low-grade cylinder mounting support 19, the high-grade cylinder mounting supports 18 are connected with the high-grade cylinder 1 through fastening nuts, the low-grade cylinder mounting supports 19 are connected with the low-grade cylinder 7 through fastening nuts, output ends of the high-grade cylinder 1 and the low-grade cylinder 7 are on the same axis, coaxial shifting fork shafts 11 are arranged between the high-grade cylinder 1 and the low-grade cylinder 7, and the shifting fork shafts 11 penetrate through two end faces of the speed regulator main body 5. In the initial state, a gap is reserved between the output end of the high-grade cylinder 1 or the low-grade cylinder 7 and the shifting fork shaft 11. The shifting fork shaft 11 can move on the speed regulator main body 5 in a reciprocating way under the action of the output ends of the high-grade cylinder 1 and the low-grade cylinder 7 which are alternatively ejected. And two end surfaces of the speed regulator main body 5 are provided with gear in-place signal switches 10. The high-grade cylinder 1 and the low-grade cylinder 7 are used for respectively pushing the shifting fork shaft 11, and the gear in-place signal switch 10 is matched to realize accurate control of high-grade and low-grade adjustment, and facilitate later-stage fault judgment. When the fork shaft 11 moves to the end of one end, the gear position in-place signal switch 10 at the end is triggered by the fork shaft 11. A speed regulator shifting fork 13 which extends downwards out of the speed regulator main body 5 is arranged on a shifting fork shaft 11 in the speed regulator main body 5. The tail ends of the speed regulator shifting forks 13 are respectively assisted to complete the meshing of high-speed gears and low-speed gears under the reciprocating drive of the shifting fork shafts 11. The bottom surface of the speed regulator main body 5 is provided with a mounting plate 12. The governor body 5 is mounted to the transmission through a mounting plate 12. One side surface of the speed regulator main body 5 is connected with a locking cylinder 8 through a mounting cover plate 16, and the output end of the locking cylinder 8 is provided with a locking piece which extends into the speed regulator main body 5 and fixes a shifting fork shaft 11. The position of the shifting fork shaft 11 which moves to the end of one end of the shifting fork shaft is locked through the locking piece of the locking cylinder 8, and then the high-speed gear or the low-speed gear in the gearbox is ensured to be in a meshed state. And an electric control board assembly 9 electrically connected with a gear in-place signal switch 10 is arranged on the other side surface of the speed regulator main body 5. The top surface of the speed regulator main body 5 is provided with a reversing valve group 3 electrically connected with an electric control board assembly 9, and the high-grade cylinder 1, the low-grade cylinder 7 and the locking cylinder 8 are communicated with the reversing valve group 3 through pipelines. The action among the high-grade cylinder 1, the low-grade cylinder 7 and the locking cylinder 8 is finished by the allocation of the reversing valve group 3 to the air source. After the electric control board assembly 9 senses that the gear in-place signal switch 10 is triggered, the reversing valve group 3 is driven to allocate air sources to finish the actions of the high-grade air cylinder 1, the low-grade air cylinder 7 and the locking air cylinder 8 one by one.
An air path assembly plate 4 communicated with the reversing valve group 3 is installed between the reversing valve group 3 and the top surface of the speed regulator main body 5, and an air inlet pipe orifice 2 communicated with the inside of the air path assembly plate 4 is arranged on the side surface of the air path assembly plate 4. And the communication between an external air source and the reversing valve group 3 is completed through the air path assembly plate 4.
The reversing valve group 3 comprises a high-grade switching reversing valve 21, a low-grade switching reversing valve and a locking cylinder reversing valve 23 which are respectively electrically connected with the electric control board assembly 9, the low-grade switching reversing valve is communicated with the high-grade cylinder 1 through a pipeline, the high-grade switching reversing valve 21 is communicated with the low-grade cylinder 7 through a pipeline, and the locking cylinder reversing valve 23 is communicated with the locking cylinder 8 through a pipeline. Each reversing valve is communicated with the air passages of different cylinders through pipelines.
The shifting fork shaft 11 is provided with a high-gear positioning groove and a low-gear positioning groove which are separated from each other on a shaft body in the speed regulator main body 5, the high-gear positioning groove is close to one end of the high-gear cylinder 1, and the low-gear positioning groove is close to one end of the low-gear cylinder 7. The high-gear positioning groove and the low-gear positioning groove assist the shift fork shaft 11 to be fixed when moving to one end.
The distance between the high-gear positioning groove and the low-gear positioning groove is equal to the movable distance of the shifting fork shaft 1 on the speed regulator main body 5.
And the output end of the locking cylinder 8 is provided with a locking pin 14 matched with the high-gear positioning groove and the low-gear positioning groove. The locking and releasing after the shifting fork shaft 11 moves to the right position towards one end are completed through the matching of the extension and contraction of the locking pin 14 and the corresponding positioning groove.
The locking pin 14 is externally provided with a guide sleeve 15 mounted on the inner end of the locking cylinder 8. The guide sleeve 15 is convenient for completing the butt joint of the locking cylinder 8 and the speed regulator main body 5, and further completing the locking and releasing of the locking pin 14 and the positioning groove on the shifting fork shaft 11.
The gear in-place signal switch 10 comprises a high gear in-place signal switch 20 and a low gear in-place signal switch 17, the high gear in-place signal switch 20 is close to one end of the low gear cylinder 7, the low gear in-place signal switch 17 is close to one end of the high gear cylinder 1, and the high gear in-place signal switch 20 and the low gear in-place signal switch 17 are respectively electrically connected with the electric control board assembly 9. When the high-grade cylinder 1 pushes the shifting fork shaft 11 to move towards the low-grade cylinder 7, the speed regulator shifting fork 13 assists to complete the meshing of the high-speed gear in the gearbox under the shifting of the shifting fork shaft 11 and triggers the high-grade in-place signal switch 20; and vice versa.
The electric control board assembly 9 is provided with a pin-shaped control circuit integrated plug 24, the control circuit integrated plug 24 is connected with a power supply of DC24V, and the reversing valve group 3 and the gear position in-place signal switch 10 are respectively connected with the control circuit integrated plug 2410 through wiring harnesses. The electric control board assembly 9 is connected with the reversing valve group 3, the gear in-place signal switch 10 and the power supply through a control circuit integrated plug 24 via a wire harness.
The use principle is as follows: after the pressure of a power source is ensured to be met, when the machine tool needs to be subjected to speed regulation to meet the requirements of different processing technologies, the speed regulation is specifically switched as follows:
1. when the machine tool is switched from low rotation speed to high rotation speed, the machine tool gives a signal for switching high rotation speed, the signal is transmitted to an electric control board assembly 9 through a control circuit integrated plug 24, a locking cylinder reversing valve 23 is firstly switched on to control a locking cylinder 8 to withdraw a locking pin 14, so that a shifting fork shaft 11 can move flexibly, a low-gear switching reversing valve further controls a high-gear cylinder 1 to push the shifting fork shaft 11 to move forwards, thereby driving the shifting fork 13 of the speed regulator to move to a high-grade position, after the high-speed gear in the gear box is meshed, at the moment, the high-gear in-place signal switch 20 is triggered and transmits a signal to the electric control board assembly 9, the locking cylinder 8 pushes out the locking pin 14 to lock and fix the position of the declutching shaft 11, the low-gear switching reversing valve drives the high-gear cylinder 1 to retreat after receiving a retracting signal, therefore, the machine tool spindle can complete switching from low speed to high speed, and the high-speed machining requirement is met.
2. When the high-speed rotation is switched to the low-speed rotation, the machine tool gives a signal for switching the low-speed rotation, the signal is transmitted to the electric control board assembly 9 through the control circuit integrated plug 24, the locking cylinder reversing valve 23 is firstly switched on to control the locking cylinder 8 to withdraw the locking pin 14, the shifting fork shaft 11 can flexibly move, the high-speed switching reversing valve 21 further controls the low-speed cylinder 7 to push the shifting fork shaft 11 to advance, thereby driving the shifting fork 13 of the speed regulator to move to the position of low gear, after the low-speed gear in the gear box is meshed, at the moment, the low gear position in-place signal switch 17 is triggered and transmits a signal to the electric control board assembly 9, the locking cylinder 8 pushes out the locking pin 14 to lock and fix the position of the declutching shaft 11, the high gear switching reversing valve 21 drives the low gear cylinder 7 to retract after receiving a retraction signal, therefore, the machine tool spindle can complete switching from high speed to low speed, and the low-speed processing requirement is met.
The invention relates to a pneumatic machining center main shaft speed regulator, which comprises a reversing valve group, wherein a shifting fork shaft is alternately pushed by a high-grade cylinder and a low-grade cylinder under the action of the reversing valve group, so that a shifting fork of the speed regulator is driven to complete high-speed and low-speed gear switching, the position of the shifting fork shaft is locked under the action of a locking cylinder, gear shifting is prevented, the machining stability is ensured, and serious damage faults of a machine tool cutter caused by gear shifting are prevented. 2. The gear in-place signal switch is convenient for judging later-period faults. 3. The speed regulator shifting fork and the shifting fork shaft are accurately and stably controlled through pneumatic pushing and pneumatic locking, flexible and stable speed change switching of the gearbox is guaranteed, high and low gear signals are transmitted quickly and accurately, precision machining of a machine tool is facilitated, and high-difficulty complex process machining can be achieved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The terms "upper", "lower", "outside", "inside" and the like in the description and claims of the present invention and the above drawings are used for distinguishing relative positions if any, and are not necessarily given qualitatively. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. The utility model provides a pneumatic type machining center main shaft speed regulator, a serial communication port, including speed regulator main part (5), speed regulator main part (5) both ends are connected with high-grade cylinder (1) and low-gear cylinder (7) through cylinder support (6), be equipped with between high-grade cylinder (1) and low-gear cylinder (7) and pass speed regulator main part (5) both ends face shift fork axle (11), the both ends face of speed regulator main part (5) is equipped with gear signal switch (10) that targets in place, be equipped with speed regulator shift fork (13) that extend speed regulator main part (5) downwards on shift fork axle (11) of speed regulator main part (5) inside, one of them side of speed regulator main part (5) is equipped with locking cylinder (8), the output of locking cylinder (8) is equipped with and extends into speed regulator main part (5) in with shift fork axle (11) fixed retaining member, another side is equipped with and gear signal switch (10) electric connection's that targets in place electric control board ) The top surface of the speed regulator main body (5) is provided with a reversing valve group (3) electrically connected with an electric control board assembly (9), and the high-grade cylinder (1), the low-grade cylinder (7) and the locking cylinder (8) are communicated with the reversing valve group (3) through pipelines.
2. The pneumatic type machining center spindle speed regulator according to claim 1, wherein a gas circuit assembly plate (4) communicated with the reversing valve group (3) is installed between the reversing valve group (3) and the top surface of the speed regulator main body (5), and a gas inlet pipe orifice (2) communicated with the interior of the gas circuit assembly plate (4) is arranged on the side surface of the gas circuit assembly plate (4).
3. The pneumatic type machining center spindle speed regulator according to claim 2, wherein the reversing valve set (3) comprises a low-gear switching reversing valve, a high-gear switching reversing valve (21) and a locking cylinder reversing valve (23) which are respectively electrically connected with the electric control board assembly (9), the low-gear switching reversing valve is communicated with the high-gear cylinder (1) through a pipeline, the high-gear switching reversing valve (21) is communicated with the low-gear cylinder (7) through a pipeline, and the locking cylinder reversing valve (23) is communicated with the locking cylinder (8) through a pipeline.
4. The pneumatic machining center spindle governor according to claim 1, wherein the fork shaft (11) has spaced high-range positioning grooves and low-range positioning grooves on the shaft body inside the governor body (5), the high-range positioning grooves are near one end of the high-range cylinder (1), and the low-range positioning grooves are near one end of the low-range cylinder (7).
5. A pneumatic machining centre spindle governor according to claim 4, in which the distance between the high and low gear detents is equal to the distance the declutch shift shaft (11) can move on the governor body (5).
6. A pneumatic machining centre spindle governor according to claim 5, characterised in that the output of the locking cylinder (8) is provided with locking pins (14) adapted to the high and low range positioning slots.
7. A pneumatic machining centre spindle governor according to claim 6, characterised in that the locking pin (14) is externally provided with a guide sleeve (15) mounted on the inner end of the locking cylinder (8).
8. The pneumatic type machining center spindle speed regulator according to claim 1, wherein the gear in-place signal switch (10) comprises a high gear in-place signal switch (20) and a low gear in-place signal switch (17), the high gear in-place signal switch (20) is close to one end of the low gear cylinder (7), the low gear in-place signal switch (17) is close to one end of the high gear cylinder (1), and the high gear in-place signal switch (20) and the low gear in-place signal switch (17) are respectively electrically connected with the electric control board assembly (9).
9. The pneumatic type machining center spindle speed regulator according to claim 1, wherein a pin-shaped control line integrated plug (24) is arranged on the electric control board assembly (9), a power supply of DC24V is connected to the control line integrated plug (24), and the reversing valve group (3) and the gear position in-place signal switch (10) are respectively connected with the control line integrated plug (24) through a wiring harness.
CN202010130490.2A 2020-02-28 2020-02-28 Pneumatic type machining center main shaft speed regulator Active CN111237449B (en)

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CN2926683Y (en) * 2006-03-24 2007-07-25 田径 Gearshift controller of gear odd-side for truck
CN201902545U (en) * 2010-12-20 2011-07-20 浙江亿日气动科技有限公司 Transmission cylinder
CN102748464A (en) * 2012-06-27 2012-10-24 陕西法士特齿轮有限责任公司 Novel three-position cylinder executing mechanism of auxiliary box
CN204755890U (en) * 2015-05-12 2015-11-11 陕西法士特汽车传动集团有限责任公司 Take odd -side derailleur just to keep off conversion protection system
CN105526345A (en) * 2014-09-28 2016-04-27 中国重汽集团济南动力有限公司 Transmission gear locking pneumatic valve
CN206874804U (en) * 2017-05-19 2018-01-12 襄阳宇清电驱动科技有限公司 A kind of integrated pneumatic gear shifting actuating mechanism of AMT speed changers
CN108488374A (en) * 2018-03-20 2018-09-04 洛阳世英机械制造有限公司 Used with tractor electrichydraulic control gearshift
CN208565526U (en) * 2018-06-13 2019-03-01 一汽解放汽车有限公司 Odd-side shifting cylinder assembly before a kind of novel heavy duty multi-shifting speed variator
CN208845703U (en) * 2018-07-23 2019-05-10 一汽解放汽车有限公司 A kind of new work transmission odd-side shifting cylinder assembly
CN110469665A (en) * 2019-09-02 2019-11-19 西安法士特汽车传动有限公司 A kind of gear box sub-case cylinder and its working method with power takeoff

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2926683Y (en) * 2006-03-24 2007-07-25 田径 Gearshift controller of gear odd-side for truck
CN201902545U (en) * 2010-12-20 2011-07-20 浙江亿日气动科技有限公司 Transmission cylinder
CN102748464A (en) * 2012-06-27 2012-10-24 陕西法士特齿轮有限责任公司 Novel three-position cylinder executing mechanism of auxiliary box
CN105526345A (en) * 2014-09-28 2016-04-27 中国重汽集团济南动力有限公司 Transmission gear locking pneumatic valve
CN204755890U (en) * 2015-05-12 2015-11-11 陕西法士特汽车传动集团有限责任公司 Take odd -side derailleur just to keep off conversion protection system
CN206874804U (en) * 2017-05-19 2018-01-12 襄阳宇清电驱动科技有限公司 A kind of integrated pneumatic gear shifting actuating mechanism of AMT speed changers
CN108488374A (en) * 2018-03-20 2018-09-04 洛阳世英机械制造有限公司 Used with tractor electrichydraulic control gearshift
CN208565526U (en) * 2018-06-13 2019-03-01 一汽解放汽车有限公司 Odd-side shifting cylinder assembly before a kind of novel heavy duty multi-shifting speed variator
CN208845703U (en) * 2018-07-23 2019-05-10 一汽解放汽车有限公司 A kind of new work transmission odd-side shifting cylinder assembly
CN110469665A (en) * 2019-09-02 2019-11-19 西安法士特汽车传动有限公司 A kind of gear box sub-case cylinder and its working method with power takeoff

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