CN112264650A

CN112264650A - Shaft key detection milling equipment

Info

Publication number: CN112264650A
Application number: CN202011174400.6A
Authority: CN
Inventors: 朱敬科
Original assignee: Taizhou Jiaojiang Yunrui Machinery Technology Development Co ltd
Current assignee: Taizhou Jiaojiang Yunrui Machinery Technology Development Co ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-01-26

Abstract

The invention discloses an axle key detection milling device, which comprises a shell, wherein a feeding hole with an opening at the upper end is arranged in the shell, a rotating cavity is arranged in the lower end wall of the feeding hole, a working cavity is arranged in the lower end wall of the rotating cavity, a falling cavity is arranged in the lower end wall of the working cavity, a replacing cavity is arranged in the left end wall of the working cavity, a milling cavity is arranged in the rear end wall of the working cavity, a lifting cavity is arranged in the lower end wall of the milling cavity, a detection cavity is arranged in the front end wall of the working cavity, a lifting detection cavity is arranged in the lower end wall of the detection cavity, a safety cavity is arranged in the front end wall of the detection cavity, an oil tank is arranged in the lower end wall of the safety cavity, the lower end wall of the rotating cavity is rotatably connected with a rotating disc, the rotating disc can fix a shaft and, and a milling cutter is arranged in the working cavity and can be used for milling and repairing.

Description

Shaft key detection milling equipment

Technical Field

The invention relates to the field of engraving, in particular to shaft key detection milling equipment.

Background

The key groove is usually milled when the shaft is used, so that the shaft is matched with other parts, but the detection of the shaft key is difficult to implement at present, the key depth is usually detected only through manual work, the levelness of the key is difficult to detect, but the levelness influences the use of the key groove, so that equipment which is convenient to detect the levelness of the key groove is needed.

Disclosure of Invention

In order to solve the problems, the axial key detection milling equipment comprises a shell, wherein a feeding hole with an upper end opening is formed in the shell, a rotating cavity is formed in the lower end wall of the feeding hole, a working cavity is formed in the lower end wall of the rotating cavity, a falling cavity is formed in the lower end wall of the working cavity, a replacing cavity is formed in the left end wall of the working cavity, a milling cavity is formed in the rear end wall of the working cavity, a lifting cavity is formed in the lower end wall of the milling cavity, a detection cavity is formed in the front end wall of the working cavity, a lifting detection cavity is formed in the lower end wall of the detection cavity, a safety cavity is formed in the front end wall of the detection cavity, an oil tank is formed in the lower end wall of the safety cavity, a moving cavity is formed in the front end wall of the rotating cavity, a fixing mechanism is arranged between the moving cavities, and, Safety control switch and be equipped with detection mechanism between the oil tank, mill the chamber be equipped with between the lift chamber and mill the mechanism, fixed establishment includes the rotatory chamber lower extreme wall rotates the rotating circular disc of connecting, rotating circular disc can fix the axle to drive it and rotate, detection mechanism includes the horizontal plate that the detection intracavity was equipped with, the horizontal plate can carry out the levelness and detect, mill the mechanism and include the milling sword that the work intracavity was equipped with, the milling sword can mill the restoration.

Preferably, the fixing mechanism comprises a hydraulic plate which is connected in a sliding manner in the moving cavity, a moving rod which is fixedly connected with the rear end face of the hydraulic plate, a moving intermediate plate which is positioned in the rotating cavity and is fixedly connected with the rear end face of the moving intermediate plate, a moving plate which is provided with a limiting groove is arranged in the moving plate, the lower end wall of the rotating cavity is rotatably connected with a rotating shaft, the upper end of the rotating shaft is fixedly connected with a rotating disc, the upper end of the rotating disc is rotatably connected with a rotating pin the upper end of which is positioned in the limiting groove, the lower end of the rotating shaft is fixedly connected with a driving pulley, the rotating disc is fixedly connected with a rotating pulley, a driving belt is connected between the driving pulley and the rotating pulley, two fixed cavities which are symmetrical left and right are arranged in the rotating disc, and, the fixed cavity is internally and slidably connected with a fixed plate, the other end of the fixed plate is fixedly connected with a fixed arc rod in the fixed hole, a first annular groove with an open lower end is arranged in the rotating disc, a second annular groove with an open lower end is arranged in the rotating disc, and the first annular groove and the second annular groove are annular.

Preferably, the detection mechanism comprises a lifting detection plate which is connected in a sliding manner in the lifting detection cavity, the upper end of the lifting detection plate is fixedly connected with a lifting rod, the upper end of the lifting detection plate is fixedly connected with a detection block, a detection translation cavity is arranged in the detection block, a detection translation plate is connected in the detection translation cavity in a sliding manner, the rear end face of the detection translation plate is fixedly connected with a detection rod, the rear end of the detection translation plate is positioned in the detection cavity, a detection translation cavity is arranged in the detection rod, the lower end wall of the detection translation cavity is rotatably connected with a torsion shaft, the upper end of the torsion shaft is connected with the upper end wall of the detection translation cavity and is provided with a torsion spring, the torsion shaft is fixedly connected with a horizontal plate, the horizontal plate is fixedly connected with a horizontal rod, a starting cavity is arranged in the detection rod, and, the starting inductor is provided with two symmetrical starting switches on the left and right, two starting plates which are symmetrical on the left and right are arranged in the starting cavity, the starting plates are connected with the starting cavity and provided with stabilizing springs, the left and right end faces of the horizontal rod are fixedly connected with horizontal ropes, the other end of each horizontal rope is fixedly connected with the corresponding starting plate, an oil tank is arranged in the shell, a first hydraulic pump is arranged in the oil tank and communicated with a first selector valve which is arranged in the shell, the first hydraulic pump is provided with a safety control switch, the upper end of the safety control switch is arranged in the safety cavity, a safety plate is connected in the safety cavity in a sliding mode, the safety cavity is communicated with the second annular groove and provided with a connecting cavity, the first selector valve is communicated with the first annular groove and provided with a communicating pipeline, the detection translation cavity is communicated with the first selector valve and provided with a detection, the second hydraulic pump intercommunication is equipped with and is located the second rotary valve in the casing, the lift detect the chamber with the second rotary valve intercommunication is equipped with the intercommunication chamber, remove the chamber with the second rotary valve intercommunication is equipped with the connecting tube.

Preferably, the milling mechanism comprises a milling block arranged in the milling cavity, a milling control cavity is arranged in the milling block, a milling plate is connected in the milling control cavity in a sliding mode, a milling motor is fixedly connected to the front end face of the milling plate, a milling shaft is connected to the milling motor in a power mode, the front end of the milling shaft is fixedly connected with a detachable milling cutter, the milling control cavity is communicated with a first selection valve to form a milling pipeline, a milling lifting plate is connected in the lifting cavity in a sliding mode, the other end of the milling lifting plate is fixedly connected with a lifting column fixedly connected with the milling block, and an intermediate cavity is communicated with a second rotary valve to form an intermediate cavity.

Preferably, a detaching plate is arranged at the communicating position of the exchange cavity and the outside, the detaching plate can be detached, so that the exchange cavity can be manually stretched into the exchange cavity, the milling cutter can be replaced, the safety control switch can change the water discharge when the first hydraulic pump is started, the first annular groove is communicated with the fixed cavity, the second annular groove is communicated with the fixed cavity, and the starting inductor can start the second hydraulic pump and the second rotary valve.

The invention has the beneficial effects that: the milling cutter is provided with the milling cutter which can be used for milling the key groove when the levelness of the key groove is not enough, and can be used for processing the key groove.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the overall structure of an axial key detection milling device of the present invention;

FIG. 2 is a schematic structural diagram at A-A in FIG. 1 according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram at B-B in FIG. 1 according to an embodiment of the present invention;

FIG. 4 is an enlarged schematic view of the embodiment of the present invention at C in FIG. 1;

FIG. 5 is an enlarged schematic view of FIG. 2 at D according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram at E-E in FIG. 5 according to an embodiment of the present invention.

Detailed Description

The invention will now be described in detail with reference to fig. 1-6, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention discloses shaft key detection milling equipment, which comprises a machine shell 10, wherein a feeding hole 83 with an opening at the upper end is arranged in the machine shell 10, a rotating cavity 43 is arranged in the lower end wall of the feeding hole 83, a working cavity 12 is arranged in the lower end wall of the rotating cavity 43, a falling cavity 11 is arranged in the lower end wall of the working cavity 12, a changing cavity 14 is arranged in the left end wall of the working cavity 12, a milling cavity 24 is arranged in the rear end wall of the working cavity 12, a lifting cavity 17 is arranged in the lower end wall of the milling cavity 24, a detection cavity 26 is arranged in the front end wall of the working cavity 12, a lifting detection cavity 37 is arranged in the lower end wall of the detection cavity 26, a safety cavity 28 is arranged in the front end wall of the detection cavity 26, an oil tank 31 is arranged in the lower end wall of the safety cavity 28, a moving cavity 51 is arranged in the front end wall of, Go up and down to detect the chamber 37 the safety control switch 30 and be equipped with detection mechanism 81 between the oil tank 31, mill the chamber 24 be equipped with between the lift chamber 17 and mill mechanism 82, fixed establishment 80 includes rotatory chamber 43 lower extreme wall rotates the rotating circular disc 44 of connecting, rotating circular disc 44 can fix the axle to drive it and rotate, detection mechanism 81 includes the horizontal plate 68 that is equipped with in the detection chamber 26, the horizontal plate 68 can carry out the levelness and detect, mill mechanism 82 and include the milling cutter 25 that is equipped with in the working chamber 12, milling cutter 25 can mill the restoration.

Advantageously, the fixing mechanism 80 comprises a hydraulic plate 53 slidably connected in the moving cavity 51, a moving rod 50 fixedly connected to a rear end surface of the hydraulic plate 53, a moving intermediate plate 49 located in the rotating cavity 43 is fixedly connected to a rear end surface of the moving rod 50, a moving plate 47 is fixedly connected to a rear end surface of the moving intermediate plate 49, a limiting groove 46 is formed in the moving plate 47, a rotating shaft 55 is rotatably connected to a lower end wall of the rotating cavity 43, a rotating disc 48 is fixedly connected to an upper end of the rotating shaft 55, a rotating pin 45 with an upper end located in the limiting groove 46 is rotatably connected to an upper end of the rotating disc 48, a driving pulley 54 is fixedly connected to a lower end of the rotating shaft 55, a rotating pulley 42 is fixedly connected to the rotating disc 44, a driving belt 56 is connected between the driving pulley 54 and the rotating pulley 42, two fixed cavities 60 which are bilaterally, a fixing hole 76 penetrating through the rotating disc 44 is formed in the rotating disc 44, a fixing plate 58 is connected in the fixing cavity 60 in a sliding mode, the fixing plate 58 is fixedly connected with a fixing arc rod 59 of which the other end is located in the fixing hole 76, a first annular groove 62 with an opening at the lower end is formed in the rotating disc 44, a second annular groove 61 with an opening at the lower end is formed in the rotating disc 44, and the first annular groove 62 and the second annular groove 61 are annular.

Beneficially, the detecting mechanism 81 includes a lifting detecting plate 38 slidably connected in the lifting detecting cavity 37, the upper end of the lifting detecting plate 38 is fixedly connected with a lifting rod 36, the upper end of the lifting rod 36 is fixedly connected with a detecting block 66, a detecting translation cavity 65 is arranged in the detecting block 66, a detecting translation plate 78 is slidably connected in the detecting translation cavity 65, the rear end face of the detecting translation plate 78 is fixedly connected with a detecting rod 79, the rear end of the detecting translation plate is located in the detecting cavity 26, a detecting translation cavity 65 is arranged in the detecting rod 79, the lower end wall of the detecting translation cavity 65 is rotatably connected with a torsion shaft 64, the upper end of the torsion shaft 64 is connected with the upper end wall of the detecting translation cavity 65 and is provided with a torsion spring 63, the torsion shaft 64 is fixedly connected with a horizontal plate 68, the horizontal plate 68 is fixedly connected with a horizontal rod 70, and a starting cavity 73 is arranged in the detecting rod 79, a start sensor 74 is fixedly connected to the left and right end walls of the start cavity 73, two symmetrical start switches 75 are arranged on the left and right of the start sensor 74, two bilaterally symmetrical start plates 72 are arranged in the start cavity 73, the start plates 72 are connected with the start cavity 73 and provided with a stabilizing spring 71, the left and right end surfaces of the horizontal rod 70 are fixedly connected with a horizontal rope 69 of which the other end is fixedly connected with the start plates 72, an oil tank 31 is arranged in the machine shell 10, a first hydraulic pump 32 is arranged in the oil tank 31, the first hydraulic pump 32 is communicated with a first selector valve 33 arranged in the machine shell 10, a safety control switch 30 of which the upper end is arranged in the safety cavity 28 is arranged on the first hydraulic pump 32, a safety plate 29 is slidably connected in the safety cavity 28, a connecting cavity 27 is arranged by communicating the safety cavity 28 with the second annular groove 61, and a communicating pipeline 77 is arranged by communicating the first selector valve 33 with the first annular groove, detect translation chamber 65 with first selection valve 33 intercommunication is equipped with detection pipeline 67, the oil tank 31 left end is equipped with second hydraulic pump 34, second hydraulic pump 34 intercommunication is equipped with and is located the second rotary valve 35 in the casing 10, go up and down to detect the chamber 37 with second rotary valve 35 intercommunication is equipped with intercommunication chamber 39, remove chamber 51 with second rotary valve 35 intercommunication is equipped with connecting tube 52.

Beneficially, the milling mechanism 82 includes the milling block 18 provided in the milling cavity 24, a milling control cavity 22 is provided in the milling block 18, a milling plate 20 is slidably connected in the milling control cavity 22, a milling motor 21 is fixedly connected to a front end face of the milling plate 20, a milling shaft 23 is dynamically connected to the milling motor 21, the milling cutter 25 capable of being detached is fixedly connected to a front end of the milling shaft 23, the milling control cavity 22 is communicated with the first selection valve 33 to form a milling pipeline 19, a milling lifting plate 40 is slidably connected in the lifting cavity 17, the other end of the upper end of the milling lifting plate 40 is fixedly connected with the lifting column 16 fixedly connected to the milling block 18, and the lifting cavity 17 is communicated with the second rotary valve 35 to form an intermediate cavity 41.

Advantageously, the replacement chamber 14 is provided with a removal plate 13 at the communication with the outside, the removal plate 13 is removable so as to manually protrude from the replacement chamber 14 for replacing the milling cutter 25, the safety control switch 30 is capable of changing the displacement of the first hydraulic pump 32 when activated, the first annular groove 62 is in communication with the fixed chamber 60, the second annular groove 61 is in communication with the fixed chamber 60, and the activation sensor 74 is capable of activating the second hydraulic pump 34 and the second rotary valve 35.

The use steps herein are described in detail below with reference to fig. 1-6: in the initial state, the two fixed arc rods 59 are farthest away, the horizontal plate 68 is in the horizontal state, the torsion spring 63 is in the relaxed state, the stabilizing spring 71 is in the relaxed state, and the oil tank 31 and the cavity capable of communicating with the oil tank 31 are filled with hydraulic oil.

When the shaft slot key is detected, the dismounting plate 13 is taken down, the milling cutter 25 is replaced through the replacing cavity 14, then the dismounting plate 13 is subjected to fire prevention, the shaft is vertically downwards placed into the machine shell 10 through the feeding port 83, the shaft key horizontally and vertically faces to the front side, at the moment, the shaft and the shaft key are enabled to move downwards until the shaft key just enables the horizontal plate 68 to enter, at the moment, the first hydraulic pump 32 is started to discharge hydraulic oil in the oil tank 31, the first selection valve 33 is started to enable the first selection valve 33 to be communicated with the communication pipeline 77, at the moment, the hydraulic oil enters the fixed cavity 60 through the communication pipeline 77 and the first annular groove 62, so that the two fixed plates 58 and the fixed arc rods 59 are pushed to move relatively, the shaft is fixed, the first hydraulic pump 32 is closed, at the moment, the hydraulic oil pushed out by the fixed plate 58 through the movement enters the safety cavity 28 through the second annular groove 61 and the connecting cavity 27, so that the safety plate 29, the safety plate 29 drives the safety control switch 30 to move downwards, so that the safety liquid amount discharged by the first hydraulic pump 32 is determined, then the first hydraulic pump 32 is started to discharge liquid in the oil tank 31, at the moment, the first selector valve 33 is started to enable the first selector valve 33 to be communicated with the detection pipeline 67, at the moment, hydraulic oil enters the detection translation cavity 65 through the detection pipeline 67, so that the detection translation plate 78, the detection rod 79 and the horizontal plate 68 are pushed to move backwards until the horizontal plate 68 contacts the bottom of the key groove, and even if the position of the key groove deviates, the phenomenon that the horizontal plate 68 is pushed to move backwards all the time and the horizontal plate 68 is damaged can not occur due to the safety liquid amount controlled by the safety control switch 30; when the horizontal plate 68 contacts the bottom of the key slot, the second hydraulic pump 34 is started to discharge hydraulic oil, at this time, the second rotary valve 35 is started to enable the second rotary valve 35 to be communicated with the communicating cavity 39, the hydraulic oil enters the lifting detection cavity 37 through the communicating cavity 39, so that the lifting detection plate 38 and the lifting rod 36 are driven to move upwards, the detection block 66 and the horizontal plate 68 are driven to move upwards, the horizontal plate 68 moves upwards to detect the levelness of the key slot, when the inside of the key slot is sufficiently flat, the horizontal plate 68 cannot incline, after the detection is finished, the resetting device is used, if the inside is not flat, the horizontal plate 68 inclines to twist the torsion spring 63, and the horizontal rod 70 is driven to cut and incline, so that one horizontal rope 69 is loosened, so that one starting switch 75 is pressed tightly, the starting inductor 74 is started, at this time, the second hydraulic pump 34 is started reversely to suck hydraulic oil, so that the horizontal plate 68 returns, then the second hydraulic pump 34 is started to suck hydraulic oil and make the second rotary valve 35 communicate with the connecting pipeline 52, so that the hydraulic plate 53, the moving rod 50, the moving intermediate plate 49 and the moving plate 47 move forward to drive the rotating disc 48, the rotating shaft 55 and the driving pulley 54 to rotate for half a turn, so that the rotating pulley 42 and the rotating disc 44 are driven by the transmission belt 56 to rotate for half a turn, so that the shaft rotates for half a turn, so that the key slot faces backward, at this time, the first hydraulic pump 32 is started to discharge hydraulic oil, and simultaneously the first selection valve 33 communicates with the milling pipeline 19, the first hydraulic pump 32 and the milling motor 21 are started to make the milling cutter 25 move forward while rotating, so that the milling cutter 25 enters the key slot and sucks blood, then the first hydraulic pump 32 is closed, the second hydraulic pump 34 is started to discharge hydraulic oil, and simultaneously the second rotary valve 35 communicates with the intermediate cavity 41, at this time, the milling lifting plate 40 and the lifting column 16 and the milling block, thereby driving the milling cutter 25 to move upwards to mill the key slot, and finishing the detection and milling.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an axle key detects equipment of milling, includes the casing, its characterized in that: a feeding hole with an opening at the upper end is arranged in the shell, a rotating cavity is arranged in the lower end wall of the feeding hole, a working cavity is arranged in the lower end wall of the rotating cavity, a falling cavity is arranged in the lower end wall of the working cavity, a replacing cavity is arranged in the left end wall of the working cavity, a milling cavity is arranged in the rear end wall of the working cavity, a lifting cavity is arranged in the lower end wall of the milling cavity, a detection cavity is arranged in the front end wall of the working cavity, a lifting detection cavity is arranged in the lower end wall of the detection cavity, a safety cavity is arranged in the front end wall of the detection cavity, an oil tank is arranged in the lower end wall of the safety cavity, a moving cavity is arranged in the front end wall of the rotating cavity, a fixing mechanism is arranged between the rotating cavity and the moving cavity, a detection mechanism is arranged between the detection cavity, the fixing mechanism comprises a rotating disc which is rotatably connected with the end wall of the rotating cavity, the rotating disc can fix a shaft and drive the shaft to rotate, the detection mechanism comprises a horizontal plate which is arranged in the detection cavity, the horizontal plate can carry out levelness detection, the milling mechanism comprises a milling cutter which is arranged in the working cavity, and the milling cutter can be used for milling and repairing.

2. The shaft key detection milling apparatus of claim 1, wherein: the fixing mechanism comprises a hydraulic plate which is connected in a sliding manner in the moving cavity, a moving rod which is fixedly connected with the rear end face of the hydraulic plate, a moving intermediate plate which is positioned in the rotating cavity and is fixedly connected with the rear end face of the moving intermediate plate, a moving plate which is provided with a limiting groove, a rotating shaft which is rotatably connected with the lower end wall of the rotating cavity, a rotating disc which is fixedly connected with the upper end of the rotating shaft and is rotatably connected with a rotating pin the upper end of which is positioned in the limiting groove, a driving belt wheel which is fixedly connected with the lower end of the rotating shaft, a rotating belt which is fixedly connected with the rotating disc, a transmission belt which is connected between the driving belt wheel and the rotating belt wheel, two fixed cavities which are symmetrical left and right are arranged in the rotating disc, and a fixed hole, the fixed cavity is internally and slidably connected with a fixed plate, the other end of the fixed plate is fixedly connected with a fixed arc rod in the fixed hole, a first annular groove with an open lower end is arranged in the rotating disc, a second annular groove with an open lower end is arranged in the rotating disc, and the first annular groove and the second annular groove are annular.

3. The shaft key detection milling apparatus of claim 2, wherein: the detection mechanism comprises a lifting detection plate which is connected in a sliding manner in the lifting detection cavity, the upper end of the lifting detection plate is fixedly connected with a lifting rod the upper end of which is positioned in the detection cavity, the upper end of the lifting rod is fixedly connected with a detection block, a detection translation cavity is arranged in the detection block, a detection translation plate is connected in the detection translation cavity in a sliding manner, the rear end surface of the detection translation plate is fixedly connected with a detection rod the rear end of which is positioned in the detection cavity, a detection translation cavity is arranged in the detection rod, the lower end wall of the detection translation cavity is rotatably connected with a torsion shaft, the upper end of the torsion shaft is connected with the upper end wall of the detection translation cavity and is provided with a torsion spring, the torsion shaft is fixedly connected with a horizontal plate, the horizontal plate is fixedly connected with a horizontal rod, a starting cavity is arranged in the detection rod, the left end wall and, two starting plates which are symmetrical left and right are arranged in the starting cavity, the starting plates are connected with the starting cavity and provided with stabilizing springs, the left end face and the right end face of the horizontal rod are fixedly connected with a horizontal rope of which the other end is fixedly connected with the starting plates, an oil tank is arranged in the shell, a first hydraulic pump is arranged in the oil tank and is communicated with a first selector valve which is arranged in the shell, the first hydraulic pump is provided with a safety control switch of which the upper end is arranged in the safety cavity, a safety plate is connected in the safety cavity in a sliding manner, the safety cavity is communicated with the second annular groove and provided with a connecting cavity, the first selector valve is communicated with the first annular groove and provided with a communicating pipeline, the detection translation cavity is communicated with the first selector valve and provided with a detection pipeline, the left end of the oil tank is provided with a second hydraulic pump which is communicated with a second rotary valve, the lifting detection cavity is communicated with the second rotary valve to form a communicating cavity, and the moving cavity is communicated with the second rotary valve to form a connecting pipeline.

4. The shaft key detection milling apparatus of claim 3, wherein: the milling mechanism comprises a milling block arranged in the milling cavity, a milling control cavity is arranged in the milling block, a milling plate is connected in the milling control cavity in a sliding mode, a milling motor is fixedly connected to the front end face of the milling plate, a milling shaft is connected to the power of the milling motor, the front end of the milling shaft is fixedly connected with a detachable milling cutter, the milling control cavity is communicated with a first selection valve to be provided with a milling pipeline, a milling lifting plate is connected in the lifting cavity in a sliding mode, the other end of the upper end of the milling lifting plate is fixedly connected with a lifting column of the milling block, and an intermediate cavity is communicated with a second rotary valve.

5. The shaft key detection milling apparatus of claim 4, wherein: the replacing cavity is provided with a detaching plate at a communication position with the outside, the detaching plate can be detached, so that the replacing cavity can be manually stretched into, the milling cutter can be replaced, the safety control switch can change the water discharge amount when the first hydraulic pump is started, the first annular groove is communicated with the fixed cavity, the second annular groove is communicated with the fixed cavity, and the starting inductor can start the second hydraulic pump and the second rotary valve.