CN111906337A

CN111906337A - Bearing ring punching equipment

Info

Publication number: CN111906337A
Application number: CN202010706050.7A
Authority: CN
Inventors: 葛元安
Original assignee: Individual
Current assignee: Shandong Suli Power Technology Co ltd
Priority date: 2020-01-13
Filing date: 2020-07-21
Publication date: 2020-11-10
Anticipated expiration: 2040-07-21
Also published as: CN111906337B

Abstract

The invention relates to a bearing ring punching device which is characterized by comprising a rack, wherein the rack is provided with: the clamping and positioning unit is used for clamping and positioning a workpiece to be punched; the drilling unit is arranged corresponding to the clamping and positioning unit and is used for drilling the workpiece; the feeding unit is mounted on the drilling unit and used for driving the drilling unit to move along the direction of the distance between the drilling unit and the workpiece; and the regulating and controlling unit is respectively connected with the clamping and positioning unit, the drilling unit and the feeding unit and is used for respectively regulating and controlling the running states of the clamping and positioning unit, the drilling unit and the feeding unit. According to the invention, the clamping and positioning unit is used for clamping and positioning a workpiece to be punched, the feeding unit is used for driving the drilling unit to move along the direction of the distance between the drilling unit and the workpiece so as to realize punching operation, and the operation states of the clamping and positioning unit, the drilling unit and the feeding unit are respectively regulated and controlled by the regulating and controlling unit, so that the efficiency of positioning and punching the bearing ring is improved.

Description

Bearing ring punching equipment

Technical Field

The invention relates to the field of bearing processing equipment, in particular to bearing ring punching equipment.

Background

The bearing is an important part commonly used in mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient in its motion process and ensure its rotation precision. In order to improve the oil lubrication effect of the bearing, holes are usually drilled in the inner ring of the bearing so as to temporarily store a certain amount of grease.

At present, in the aspect of punching of a bearing ring, the clamping and positioning and punching operation of the bearing ring are inconvenient, so that the production efficiency is low.

Disclosure of Invention

The invention aims to provide a bearing ring punching device which can improve the efficiency of positioning and punching a bearing ring.

The technical scheme adopted by the invention is as follows.

The utility model provides a bearing ring drilling equipment which characterized in that, including the frame, is equipped with in the frame: the clamping and positioning unit is used for clamping and positioning a workpiece to be punched; the drilling unit is arranged corresponding to the clamping and positioning unit and is used for drilling the workpiece; the feeding unit is mounted on the drilling unit and used for driving the drilling unit to move along the direction of the distance between the drilling unit and the workpiece; and the regulating and controlling unit is respectively connected with the clamping and positioning unit, the drilling unit and the feeding unit and is used for respectively regulating and controlling the running states of the clamping and positioning unit, the drilling unit and the feeding unit.

Preferably, the clamping and positioning unit is formed by a chuck assembly, and a cleaning mechanism for cleaning cutting scraps is arranged on the chuck assembly.

Preferably, the chuck assembly comprises a chuck and a plurality of jaws concentrically arranged at the top of the chuck, the jaws and the top of the chuck form a sliding guide assembly along the radial direction of the chuck, the jaws are provided with step-shaped supporting parts for supporting and positioning a workpiece, and the cleaning mechanism is arranged corresponding to the jaws and used for cleaning cutting scraps on the supporting parts.

Preferably, the cleaning mechanism includes a nozzle provided on the jaw, and a spray direction of the nozzle is arranged toward an inner surface of the support portion.

Preferably, the drilling unit comprises a driving assembly, a rotating shaft and a drill bit, the driving assembly is in transmission connection with the rotating shaft, the rotating shaft is telescopically mounted on the feeding unit along the axial direction of the rotating shaft, a jacket for detachably assembling the drill bit is assembled at one end of the rotating shaft, the driving assembly drives the rotating shaft to drive the drill bit to rotate, and the feeding unit drives the rotating shaft to drive the drill bit to move along the axial direction of the rotating shaft; the drill bit and the clamping jaw are arranged in a staggered mode.

Preferably, the feeding unit is formed by a cylinder or an electric cylinder with a piston rod, the rotating shaft is rotatably assembled on the piston rod and is concentrically arranged with the piston rod, and the piston rod regulates and controls the rotating shaft to synchronously move through extension/retraction so as to enable the drill to approach/depart from the workpiece.

Preferably, the piston rod is provided with a trigger part which moves synchronously with the piston rod, two ends of the stroke of the trigger part are respectively provided with a sensor A and a sensor B, the sensor A and the sensor B are respectively used for sensing position information when the trigger part reaches the two ends of the stroke and transmitting the position information to the regulating and controlling unit, and the regulating and controlling unit respectively regulates and controls the running states of the driving component and the feeding unit according to the position information.

Preferably, the trigger part comprises a trigger part A and a trigger part B which are arranged along the rod length direction of the piston rod at intervals, the trigger part A and the trigger part B are respectively arranged corresponding to the sensor A and the sensor B, the sensor A is used for sensing the position information A of the trigger part A and transmitting the position information A to the regulating and controlling unit when the piston rod retracts to the proper position, the sensor B is used for sensing the position information B of the trigger part B and transmitting the position information B to the regulating and controlling unit when the piston rod extends to the proper position, and the regulating and controlling unit is used for regulating and controlling the piston rod to stop retracting after receiving the position information A and regulating and controlling the piston rod to be converted from the extending state to the retracting state when.

Preferably, the piston rod is equipped with the connecting seat, and the trigger piece includes that A triggers the portion, B triggers the portion and C adjusting screw, and C adjusting screw is detachable to be installed on the connecting seat, and the pole length direction of C adjusting screw keeps unanimous with the pole length direction of piston rod, and A triggers the portion and B triggers the portion and all constitutes screw-thread fit with C adjusting screw and is connected, rotates the adjustable A position of A trigger portion/B trigger portion on C adjusting screw of A trigger portion/B trigger portion.

Preferably, the trigger part a and the trigger part B are each formed by a discoid trigger block.

Preferably, the piston rod is further connected with a damper for adjusting the speed of movement of the piston rod at different positions.

Preferably, the rack is further provided with a stroke limiting part, the stroke limiting part is located on a moving path of the damper, the damper is installed on the connecting seat, the connecting seat is detachably assembled on the piston rod, and the damper is abutted and matched with the stroke limiting part to reduce the moving speed of the piston rod.

Preferably, the stroke limiting part is provided with a sensor C used for abutting and matching with the damper, the sensor C is used for sensing a pressure signal generated when the damper abuts and transmitting the pressure signal to the regulating and controlling unit, the regulating and controlling unit regulates and controls the driving assembly to start to operate when receiving the pressure signal, and regulates and controls the driving assembly to stop operating when not receiving the pressure signal.

Preferably, when the drill bit is positioned at the periphery of the workpiece, the damper and the stroke limiting part are arranged in a separated manner; when the drill bit contacts the workpiece or enters the workpiece, the damper is in a state of abutting against the stroke limiting part.

Preferably, the rack is further fixedly provided with a guide rod, the guide rod is arranged in parallel with the piston rod, and the connecting seat and the guide rod form sliding guide assembly connection along the rod length direction of the guide rod.

Preferably, the rack is rotatably provided with a transmission rod, the transmission rod and the rotating shaft are concentrically arranged, the rod length direction of the transmission rod is consistent with the axial direction of the rotating shaft, the transmission rod is limited and arranged on the rack along the rod length direction, one end of the transmission rod is connected with one end, far away from the drill bit, of the rotating shaft, the transmission rod and the rotating shaft form sliding guide fit along the axial direction of the rotating shaft, and the driving assembly is in transmission connection with the transmission rod and used for driving the transmission rod and the rotating shaft to rotate synchronously.

Preferably, the piston rod is formed by a hollow rod piece, the rotating shaft is rotatably arranged in the rod of the piston rod, and the rotating shaft is connected with the transmission rod through an elastic coupling.

Preferably, the end part of the piston rod, which is far away from the drill bit, is provided with a sleeve, the piston rod and the sleeve are arranged concentrically and smoothly, the sleeve is sleeved on the transmission rod in a hollow manner, the trigger piece and the connecting seat are arranged on the sleeve, and the trigger piece and the damper are respectively positioned on two sides of the sleeve.

Preferably, the drive assembly is mounted on the feeding unit; the frame is fixedly provided with a mounting seat for mounting the feeding unit, the mounting seat comprises an A positioning mechanism and a B positioning mechanism, the A positioning mechanism is used for adjusting the position of the feeding unit along the a direction, the B positioning mechanism is used for adjusting the position of the feeding unit along the B direction, the a direction and the B direction are intersected with the telescopic direction of the piston rod, and the a direction and the B direction are intersected.

Preferably, the A positioning mechanism comprises an A guide rail, an A sliding block and an A locking assembly, the A sliding block and the A guide rail form sliding guide assembly along the direction a, the feeding unit is installed on the A sliding block, and the A locking assembly is used for locking the position of the A sliding block on the A guide rail; the B position adjusting mechanism comprises a B guide rail, a B sliding block and a B locking assembly, the B sliding block and the B guide rail form sliding guide assembly along the direction B, the A guide rail is fixed on the B sliding block, the B guide rail is fixed on the rack, and the B locking assembly is used for locking the position of the B sliding block on the B guide rail.

Preferably, the frame is further provided with a liquid distribution unit for distributing the cooling liquid, and the liquid distribution unit is arranged above the chuck.

Preferably, the liquid distribution unit comprises a liquid distribution port, and the liquid distribution port is arranged corresponding to the drilling position of the drill bit on the workpiece.

Preferably, still be equipped with in the frame and be used for carrying out recycle's recovery unit to the coolant liquid, recovery unit includes the liquid reserve tank, carry pipe fitting and delivery pump subassembly, the chuck assembly is in the liquid reserve tank, the liquid reserve tank is used for collecting the coolant liquid of the cloth liquid mouth spraying of cloth liquid unit, the bottom of liquid reserve tank has the liquid outlet, the liquid outlet is to the intercommunication through carrying pipe fitting and cloth liquid unit, delivery pump subassembly concatenates the middle part at carrying pipe fitting for carry the coolant liquid propelling movement to the cloth liquid unit in the liquid reserve tank.

Preferably, the recovery unit further comprises a filtering assembly, and the filtering assembly is arranged between the liquid outlet and the conveying pump assembly and is used for filtering impurities in the cooling liquid in the liquid storage tank.

Preferably, the frame is further provided with a liquid blocking member for preventing the cooling liquid from splashing outwards, and the liquid blocking member is arranged on the outer peripheral side of the chuck and corresponds to the liquid distribution port of the liquid distribution unit.

Preferably, the drive assembly is an electric motor.

Preferably, the damper is a hydraulic damper.

Preferably, the sleeve is detachably assembled and connected with the piston rod, and the connecting seat is detachably assembled and connected with the sleeve.

The invention has the technical effects that:

according to the bearing ring punching equipment provided by the invention, the clamping and positioning unit is used for clamping and positioning a workpiece to be punched, the feeding unit is used for driving the drilling unit to move along the direction of the distance between the drilling unit and the workpiece so as to realize punching operation, and the operation states of the clamping and positioning unit, the drilling unit and the feeding unit are respectively regulated and controlled by the regulating and controlling unit, so that the efficiency of positioning and punching the bearing ring is improved.

Drawings

FIG. 1 is an isometric view of a bearing ring punching apparatus provided by an embodiment of the present application;

FIG. 2 is a top view of FIG. 1;

fig. 3 is an assembly schematic diagram of a drilling unit, a feeding unit and a mounting seat provided in the embodiment of the present application;

FIG. 4 is a schematic view of the structure of FIG. 3 from another perspective;

FIG. 5 is a schematic view of the structure of FIG. 3 from yet another perspective;

FIG. 6 is a schematic view of the assembly of the feeding unit and the drilling unit;

FIG. 7 is a top view of FIG. 6;

FIG. 8 is a cross-sectional view taken along line A-A of FIG. 7;

FIG. 9 is a cross-sectional view taken along A-A of FIG. 7 according to yet another embodiment of the present application;

fig. 10 is a schematic structural diagram of a clamping and positioning unit according to an embodiment of the present application;

FIG. 11 is a schematic structural diagram of a jaw provided in an embodiment of the present application;

FIG. 12 is a top view of FIG. 11;

fig. 13 is a sectional view taken along the direction B-B in fig. 12.

The corresponding relation of all the reference numbers is as follows:

100-clamping and positioning unit, 110-chuck, 120-jaw, 121-supporting part, 121 a-horizontal supporting surface, 121B-vertical supporting surface, 122-nozzle, 123-air flow channel, 200-drilling unit, 210-driving component, 220-rotating shaft, 230-jacket, 240-drill bit, 250-transmission rod, 300-feeding unit, 310-piston rod, 320-connecting seat, 330-stroke limiting part, 340-guide rod, 350-sleeve, 400-trigger, 410-A trigger, 420-B trigger, 430-C adjusting screw, 500-A sensor, 600-B sensor, 700-damper, 800-C sensor, 900-mounting seat, 910-A guide rail, 920-B slide block, 930-A locking component, 931-A adjusting screw rod, 932-A locking nut, 933-A fixing block, 940-B guide rail, 950-B sliding block, 960-B locking component, 961-B adjusting screw rod, 962-B locking nut, 963-B fixing block, 1010-liquid storage tank, 1011-liquid outlet, 1020-liquid blocking component and 1030-elastic coupling.

Detailed Description

In order that the objects and advantages of the invention will be more clearly understood, the following description is given in conjunction with the accompanying examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the invention and does not strictly limit the scope of the invention as specifically claimed.

Referring to fig. 1 to 13, the embodiment of the application provides a bearing ring punching device, which aims to solve the problem that in the prior art, in the aspect of punching of a bearing ring, clamping, positioning and punching operations on the bearing ring are inconvenient, so that the production efficiency is low.

As shown in fig. 1 to 13, the solution provided by the embodiment of the present application includes a frame, on which: the clamping and positioning unit 100 is used for clamping and positioning a workpiece to be punched; a drilling unit 200, arranged corresponding to the clamping and positioning unit 100, for drilling a workpiece; a feeding unit 300, which is installed with the drilling unit 200 and is used for driving the drilling unit 200 to move along the distance direction between the drilling unit and the workpiece; and the regulating and controlling units are respectively connected with the clamping and positioning unit 100, the drilling unit 200 and the feeding unit 300 and are used for respectively regulating and controlling the running states of the clamping and positioning unit 100, the drilling unit 200 and the feeding unit 300.

The bearing ring punching equipment provided by the embodiment of the application clamps and positions a workpiece to be punched through the clamping and positioning unit 100, drives the drilling unit 200 to move along the distance direction between the drilling unit and the workpiece through the feeding unit 300 to realize punching operation, and regulates and controls the operating states of the clamping and positioning unit 100, the drilling unit 200 and the feeding unit 300 through the regulating and controlling unit respectively, so that the efficiency of positioning and punching the bearing ring is improved.

Further, as shown in fig. 10 to 13, the clamping and positioning unit 100 is constituted by a chuck assembly provided with a cleaning mechanism for cleaning cutting debris. The chuck assembly is adopted as the clamping and positioning unit 100 to clamp and position the workpiece because the chuck assembly is easy to obtain, and the chuck assembly can adapt to clamping and positioning of workpieces with different specifications and sizes by replacing different clamping jaws 120 in the application process; in addition, after each punching operation, cutting scraps can be generated on the chuck assembly, the reliability of clamping of the next workpiece and the positioning precision are affected, and therefore the cutting scraps are cleaned by the cleaning mechanism, the clamping and positioning effects, the workpiece punching precision consistency and the product yield are improved.

Specifically, as shown in fig. 10 to 13, the chuck assembly includes a chuck 110 and a plurality of jaws 120 concentrically arranged on the top of the chuck 110, the jaws 120 are slidably assembled with the top of the chuck 110 along the radial direction of the chuck 110, the jaws 120 have step-shaped supporting portions 121 for supporting and positioning a workpiece, and a cleaning mechanism is arranged corresponding to the jaws 120 for cleaning cutting debris on the supporting portions 121. The implementation principle of the scheme is as follows: the plurality of clamping jaws 120 are used for clamping and positioning workpieces at different parts of the bearing ring so as to ensure that the bearing ring can be accurately positioned and stably clamped; the clamping and positioning requirements of bearing rings with different sizes can be met because the clamping jaws 120 are matched with the top of the chuck 110 in a sliding and guiding manner along the radial direction of the chuck 110; through set up the supporting part 121 of step form on jack catch 120, can play the effect of supporting the work piece, through supporting part 121 coacts in the work piece on a plurality of jack catches 120, can play the effect of fixing a position the work piece, for preventing supporting part 121 from remaining the cutting bits after the work piece punches at every turn, through corresponding the arranging of clearance mechanism and jack catch 120, the realization is to the clearance of the cutting residual bits on supporting part 121.

As shown in fig. 10 to 13, regarding the embodiment of the cleaning mechanism, the present embodiment preferably has a cleaning mechanism including a nozzle 122 connected to an air source, the nozzle 122 being provided on the claw 120, and the spraying direction of the nozzle 122 being arranged toward the inner surface of the support portion 121. The implementation principle of the scheme is as follows: the inner surface of the supporting part 121 is sprayed with air by using the nozzle 122 connected with an air source, so that the purpose of cleaning the cutting scraps on the supporting part 121 is achieved.

More preferably, as shown in fig. 13, an air flow channel 123 is formed inside the claw 120, one end of the air flow channel 123 extends to the inner surface of the support portion 121 to form a nozzle 122 for spraying air from the air supply, the other end of the air flow channel 123 extends to the outer surface of the claw 120 and is connected to the air supply through an air path pipe, an electromagnetic valve is disposed on the air path pipe, the electromagnetic valve is connected to a control unit, the control unit controls the on-off state of the electromagnetic valve, and the control unit controls the nozzle 122 to perform timely air injection cleaning operation on the inner surface of the support portion 121.

Typically, as shown in fig. 1, 2 and 10, the holes are arranged at intervals along the circumference of the bearing ring, and the distance between two adjacent holes is the same. In this case, take three examples of punching for every race, in order to improve the efficiency of punching, the preferred scheme of this application embodiment is: the three jaws 120 are uniformly distributed along the circumferential direction of the chuck 110, the drilling units 200 and the feeding units 300 are respectively provided with three groups, the three groups of drilling units 200 and the three groups of feeding units 300 are respectively uniformly distributed along the circumferential direction of the chuck 110, each drilling unit 200 is respectively arranged corresponding to each part to be drilled on the bearing ring, and each part to be drilled is distributed between two adjacent jaws 120. The implementation principle of the scheme is as follows: after the bearing ring to be punched is clamped and positioned on the three-jaw chuck 110, the distribution positions of the jaws 120 along the circumferential direction of the chuck 110 are determined, so that the positions of the bearing ring to be punched can be adjusted by only adjusting the positions of the drilling units 200 and the feeding units 300.

As shown in fig. 3 to 5, regarding the implementation form of the drilling unit 200, the embodiment of the present application provides a preferable solution, the drilling unit 200 includes a driving assembly 210, a rotating shaft 220 and a drill 240, the driving assembly 210 is in transmission connection with the rotating shaft 220, the rotating shaft 220 is telescopically mounted on a feeding unit 300 along an axial direction thereof, one end of the rotating shaft 220 is equipped with a jacket 230 for detachably mounting the drill 240, the driving assembly 210 drives the rotating shaft 220 to drive the drill 240 to rotate, and the feeding unit 300 drives the rotating shaft 220 to drive the drill 240 to move along the axial direction of the rotating shaft 220; the bit 240 is offset from the jaws 120. The drill bits 240 pass through the center of the bearing ring along with the extending and retracting direction of the rotating shaft 220, that is, each drill bit 240 is located in the diameter direction of the bearing ring. When the feeding unit 300 drives the rotating shaft 220 to extend/retract, the drilling head 240 can be driven to approach/leave the bearing ring to be drilled, under the condition that the driving assembly 210 drives the rotating shaft 220 to rotate, the rotating shaft 220 can drive the drilling head 240 to rotate, and if the feeding unit 300 drives the rotating shaft 220 to drive the drilling head 240 to move towards the direction close to the bearing ring, the drilling operation can be realized.

As shown in fig. 3 to 9, a preferred embodiment of the feeding unit 300 is: the feeding unit 300 is formed by an air cylinder or an electric cylinder having a piston rod 310, the rotating shaft 220 is rotatably mounted on the piston rod 310, the rotating shaft 220 and the piston rod 310 are concentrically arranged, and the piston rod 310 regulates the rotating shaft 220 to synchronously move by extending/retracting, so that the drill bit 240 approaches/departs from the workpiece. The implementation principle of the scheme is as follows: by adopting the piston rod 310 to connect with the rotating shaft 220, the telescopic rod can be used for driving the rotating shaft 220 to move along the direction of the distance between the rotating shaft 220 and the workpiece, and the rotating shaft 220 is rotatably assembled on the piston rod 310, so that the rotation of the rotating shaft 220 and the axial movement of the rotating shaft 220 are not influenced by each other.

As shown in fig. 1 to 9, in order to limit the moving stroke of the piston rod 310, the lost motion is reduced; it is also necessary to stop the operation of the control driving assembly 210 after the piston rod 310 returns to the original position, i.e. the drilling head 240 finishes drilling and exits to the original position. The preferred scheme of the embodiment of the application is as follows: the piston rod 310 is provided with a trigger 400 moving synchronously with the piston rod, two ends of the stroke of the trigger 400 are respectively provided with an A sensor 500 and a B sensor 600, the A sensor 500 and the B sensor 600 are respectively used for sensing the position information when the trigger 400 reaches the two ends of the stroke and transmitting the position information to the regulating and controlling unit, and the regulating and controlling unit regulates and controls the running state of the feeding unit 300 according to the position information. The implementation principle of the scheme is as follows: when the trigger 400 moves to one end of the stroke along with the piston rod 310, the sensor a 500 senses the position information of the trigger 400 and sends the position information to the regulating and controlling unit, and the regulating and controlling unit regulates and controls the state of the feeding unit 300 to enable the piston rod 310 to stop retracting; when the trigger 400 moves to the other end of the stroke along with the piston rod 310, the B sensor 600 senses the position information of the trigger 400 and sends the position information to the control unit, and the control unit controls the state of the feeding unit 300, so that the piston rod 310 is adjusted from the extending state to the retracting state.

Specifically, as shown in fig. 6 to 9, the trigger 400 includes an a trigger part 410 and a B trigger part 420 arranged at intervals along the rod length direction of the piston rod 310, the a trigger part 410 and the B trigger part 420 are respectively arranged corresponding to the a sensor 500 and the B sensor 600, the a sensor 500 is configured to sense a position information of the a trigger part 410 and transmit the a position information to the control unit when the piston rod 310 retracts to the proper position, the B sensor 600 is configured to sense B position information of the B trigger part 420 and transmit the B position information to the control unit when the piston rod 310 extends to the proper position, and the control unit is configured to control the piston rod 310 to stop retracting after receiving the a position information and control the piston rod 310 to change from the extended state to the retracted state when the B position information is received. The implementation principle of the scheme is as follows: when the trigger part A410 moves in an extending mode along with the piston rod 310, the position information of the trigger part A410 is detected in real time through the sensor A500, when the trigger part A410 is detected by the sensor A500, the position information A is generated and sent to the regulating and controlling unit, the regulating and controlling unit receives the position information A and then regulates and controls the piston rod 310 to stop extending and convert into a retraction state, namely, at the moment, the drilling hole is in place, the feeding is stopped, and the drill bit 240 starts to withdraw from a workpiece; when the trigger part B420 retracts along with the piston rod 310, the position information of the trigger part B420 is detected in real time through the sensor B600, when the sensor B600 detects the trigger part B420, the sensor B generates the position information B and sends the position information B to the regulating and controlling unit, and the regulating and controlling unit regulates and controls the piston rod 310 to stop retracting after receiving the position information B, so that the strokes of the piston rod 310 and the drill bit 240 are regulated and controlled.

Since the dimensions of the bearing rings to be punched in each batch may be different, in order to meet the punching requirements of bearing rings with different dimensions, further preferred solutions of the embodiments of the present application as shown in fig. 5 to 9 are as follows: the piston rod 310 is provided with the connecting seat 320, the trigger 400 further comprises a C adjusting screw 430, the C adjusting screw 430 is detachably mounted on the connecting seat 320, the rod length direction of the C adjusting screw 430 is consistent with the rod length direction of the piston rod 310, the A trigger part 410 and the B trigger part 420 are in threaded fit connection with the C adjusting screw 430, and the A trigger part 410/B trigger part 420 is rotated to adjust the position of the A trigger part 410/B trigger part 420 on the C adjusting screw 430. The initial position of the drill bit 240 after being retracted to the position can be adjusted by adjusting the position of the trigger part A410 on the adjusting screw rod C430, that is, the distance between the drill bit 240 after being retracted to the position and the workpiece can be adjusted, so that the initial position of the drill bit 240 can be adjusted by adjusting the position of the trigger part A410 according to the outer diameter of the bearing ring; by adjusting the position of the B trigger part 420 on the C adjusting screw 430, the position of the drill bit 240 after being fed in place can be adjusted, that is, the drilling depth of the drill bit 240 in the bearing ring can be adjusted, so that the drilling depth of the drill bit 240 can be adjusted by adjusting the position of the B trigger part 420 according to the difference of the thickness of the bearing ring. It can be seen that the stroke and initial position of the piston rod 310 can be adjusted by adjusting the positions of the a trigger 410 and the B trigger 420.

Since the a trigger part 410 and the B trigger part 420 are respectively screwed to the C adjusting screw 430, the position adjustment can be achieved by respectively rotating the a trigger part 410 and the B trigger part 420, and the a trigger part 410 and the B trigger part 420 are respectively formed of discoid trigger blocks for convenience of operation.

Since the moving speed of the piston rod 310 directly affects the moving speed of the drill 240, if the piston rod 310 drives the drill 240 to approach the workpiece at a high speed, the drill 240 is likely to break, and therefore, it is necessary to adjust the moving speed of the piston rod 310. As shown in fig. 1 to 9, in the preferred embodiment of the present application, the piston rod 310 is further connected to a damper 700, and the damper 700 is used to adjust the moving speed of the piston rod 310 at different positions.

Specifically, as shown in fig. 3, 4 and 6, the rack is further provided with a stroke limiting part 330, the stroke limiting part 330 is located on a moving path of the damper 700, the damper 700 is mounted on the connecting seat 320, the connecting seat 320 is detachably assembled on the piston rod 310, and the damper 700 forms an abutting fit with the stroke limiting part 330 to reduce the moving speed of the piston rod 310. The implementation principle of the scheme is as follows: the resultant force of the piston rod 310 along the rod length direction thereof is adjusted by abutting the damper 700 against the stroke limiting part 330 on the frame, and the damping generated by the damper 700 is changed along with the change of the moving stroke of the piston rod 310, so that the moving speed of the piston rod 310 driving the rotating shaft 220 and the drill bit 240 is adjusted; in addition, since the connection base 320 is detachably mounted on the piston rod 310, the position where the moving speed of the drill 240 starts to be adjusted can be adjusted by changing the mounting position of the connection base 320 on the piston rod 310 in actual use.

Since the drill 240 is usually doing useless work before contacting the workpiece and after it is completely withdrawn from the workpiece, it is necessary to adjust when the drill 240 starts to rotate and when it stops rotating to reduce the waste of energy utilization of the equipment. Therefore, as shown in fig. 4 and fig. 6, the preferred solution of the embodiment of the present application is: the stroke limiting part 330 is provided with a C sensor 800 which is used for abutting and matching with the damper 700, the C sensor 800 is used for sensing a pressure signal when the damper 700 abuts and transmitting the pressure signal to the regulating and controlling unit, the regulating and controlling unit regulates and controls the driving assembly 210 to start running when receiving the pressure signal, and regulates and controls the driving assembly 210 to stop running when not receiving the pressure signal. The implementation principle of the scheme is as follows: through setting up C sensor 800 on stroke limiter 330, by C sensor 800 accepting the support of attenuator 700 in the removal in-process of attenuator 700, thereby produce pressure signal, simultaneously, C sensor 800 sends the pressure signal who produces to the regulation and control unit, the regulation and control unit just adjusts and controls drive assembly 210 and starts the operation when receiving this pressure signal, make pivot 220 rotatory and drive drill bit 240 rotatory, if the regulation and control unit does not receive pressure signal or pressure signal disappearance back, the regulation and control unit will adjust and control drive assembly 210 and stop the operation, thereby accomplish the regulation and control operation when rotatory and when stop to drill bit 240. That is, the drill bit 240 is not rotated before the damper 700 is abutted against/disengaged from the C sensor 800; when the damper 700 abuts against the C sensor 800 and the C sensor 800 generates a pressure signal, the drill bit 240 starts to rotate, so that in practical application, the initial distance between the damper 700 and the C sensor 800 can be adjusted by changing the installation position of the damper 700 on the piston rod 310, and the piston rod 310 is made to change from fast to slow in the extending process; of course, it is also possible to initiate rotation of the drill bit 240 upon approaching a workpiece by adjusting the mounting position of the damper 700.

Specifically, referring to fig. 1 to 4, when the drill 240 is located at the periphery of the workpiece, the damper 700 and the stroke limiting portion 330 are arranged separately, wherein the drill 240 is located at the periphery of the workpiece, which means that the distance between the drill 240 and the workpiece is greater than zero, and when the drill 240 is located at the periphery of the workpiece and approaches the workpiece, the moving speed is faster. When the drill 240 contacts the workpiece or enters the workpiece, the damper 700 and the stroke limiting part 330 are in an abutting state, that is, before the drill 240 contacts the workpiece, the damper 700 starts to abut against the stroke limiting part 330, so that the drill 240 starts to decelerate, thereby preventing the drill 240 from being broken due to the mismatch between the rotating speed and the feeding speed of the drill 240, and ensuring the smooth operation of the punching operation.

In order to prevent the connecting seat 320 from being deviated after being used for a period of time, so that the triggering member 400 interferes with the a sensor 500 and the B sensor 600 or is out of the sensing range of the a sensor 500 and the B sensor 600, and so that the damper 700 cannot be accurately abutted against the stroke limiter 330 and/or the C sensor 800, as shown in fig. 1 to 4, 6 and 7, the preferred solution of the embodiment of the present application is: the rack is also fixedly provided with a guide rod 340, the guide rod 340 is arranged in parallel with the piston rod 310, and the connecting seat 320 and the guide rod 340 form sliding guide assembly connection along the rod length direction of the guide rod 340. By providing the guide rod 340, the connection holder 320 can be moved along the rod length direction of the guide rod 340 along with the piston rod 310, thereby preventing the connection holder 320 from being deviated due to long-term use, and improving the stability of the connection holder 320 in use.

In terms of the transmission connection between the driving assembly 210 and the rotating shaft 220, as shown in fig. 6 to 9, in the embodiment of the present application, preferably, a driving rod 250 is rotatably mounted on the frame, the driving rod 250 is concentrically arranged with the rotating shaft 220, and the rod length direction of the driving rod 250 is consistent with the axial direction of the rotating shaft 220, the driving rod 250 is limitedly mounted on the frame along the rod length direction thereof, one end of the driving rod 250 is connected with one end of the rotating shaft 220 away from the drill 240, and the driving rod 250 and the rotating shaft 220 form a sliding guide fit along the axial direction of the rotating shaft 220, and the driving assembly 210 is in transmission connection with the driving rod 250 and is used for driving the driving rod. The implementation principle of the scheme is as follows: by rotatably mounting the transmission rod 250 on the rack, the transmission rod 250 is respectively connected to the driving assembly 210 and the rotating shaft 220, the driving assembly 210 drives the rotating shaft 220 to rotate through the transmission rod 250, and the piston rod 310 can drive the rotating shaft 220 to move relative to the transmission rod 250.

Specifically, as shown in fig. 6, 7 and 9, the piston rod 310 is a hollow rod, the rotating shaft 220 is rotatably installed in the rod of the piston rod 310, and the rotating shaft 220 is connected to the transmission rod 250 through the elastic coupling 1030. By connecting the transmission rod 250 and the rotating shaft 220 through the elastic coupling 1030, not only the kinetic energy for driving the rotating shaft 220 to rotate can be transmitted, but also the axial resetting of the rotating shaft 220 can be facilitated.

As shown in fig. 6 to 8, regarding the assembly connection form of the rotating shaft 220 and the transmission rod 250, another scheme may also be adopted, in which the transmission rod 250 is provided as a hollow rod, a spline groove for guiding the rotating shaft 220 is provided on the inner wall of the transmission rod 250, and the outer surface of one end of the rotating shaft 220, which is far away from the drill bit, is provided with a spline which forms a sliding guide fit with the spline groove along the axial direction of the rotating shaft. Therefore, when the piston rod 310 drives the rotating shaft 220 to move along the axial direction thereof, the rotating shaft 220 slides on the inner wall of the transmission rod 250 along the axial direction of the rotating shaft 220 through the spline, and the transmission rod 250 drives the rotating shaft 220 to rotate under the driving of the driving assembly 210.

More specifically, as shown in fig. 9, the end of the piston rod 310 away from the drill 240 is installed with a sleeve 350, the piston rod 310 is arranged concentrically and longitudinally with the sleeve 350, the sleeve 350 is hollow sleeved on the transmission rod 250, the trigger 400 and the connecting seat 320 are installed on the sleeve 350, and the trigger 400 and the damper 700 are respectively located at two sides of the sleeve 350. In practical applications, the hollow piston rod 310 has a limited length, one end of the rotating shaft 220 is exposed outside the piston rod 310 due to the need to mount the jacket 230, and the other end of the rotating shaft is connected to the driving rod 250 and also extends outside the piston rod 310. The movement of the end of the rotary shaft 220 for coupling with the driving lever 250 can be guided by providing the sleeve 350, and foreign materials can be prevented from falling onto the rotary shaft 220. Of course, the sleeve 350 may also extend along the length of the tube to the periphery of the driving rod 250 near the end of the rotating shaft 220, so that the sleeve 350 can be used as a bearing seat for the driving rod 250, thereby ensuring the rotation accuracy of the driving rod 250 and providing support for the driving rod 250.

In order to facilitate maintenance and replacement, the preferred solution of the embodiment of the present application is that the sleeve 350 is detachably assembled with the piston rod 310, and the connecting seat 320 is detachably assembled with the sleeve 350. Wherein, since the connecting holder 320 is detachably connected to the sleeve 350, the assembly positions of the trigger 400 and the damper 700 along the rod length direction of the piston rod 310 can be uniformly adjusted by adjusting the installation position of the connecting holder 320 on the sleeve 350. In addition, the sleeve 350 and the piston rod 310 are detachably assembled, so that the flexibility of the disassembly and assembly operations of the rotating shaft 220, the elastic coupling 1030 and the transmission rod 250 is improved, and the sleeve 350 can be disassembled and replaced when the sleeve 350 is damaged.

In order to facilitate the adjustment of the coordinate position of the feeding unit 300, as shown in fig. 1 to 5, the preferred solution of the embodiment of the present application is: the driving assembly 210 is mounted on the feeding unit 300; the rack is fixedly provided with a mounting seat 900 for mounting the feeding unit 300, the mounting seat 900 comprises an A positioning mechanism and a B positioning mechanism, the A positioning mechanism is used for adjusting the position of the feeding unit 300 along the a direction, the B positioning mechanism is used for adjusting the position of the feeding unit 300 along the B direction, the a direction and the B direction are intersected with the telescopic direction of the piston rod 310, and the a direction and the B direction are intersected. The implementation principle of the scheme is as follows: taking the extending and retracting direction of the piston rod 310 along the horizontal direction as an example, the position of the feeding unit 300 along the a direction is adjusted by the a-position adjusting mechanism, that is, the height of the drill bit 240 on the bearing ring is adjusted/the drilling direction of the drill bit 240 passes through the center of the bearing ring; the position of the feeding unit 300 in the B direction is adjusted by the B-position adjusting mechanism, that is, the drilling direction of the drill 240 is adjusted through the center of the bearing ring/the height of the drilling position of the drill 240 on the workpiece is adjusted. Through the arrangement, the punching position can be ensured to be more accurate.

Specifically, as shown in fig. 3 to 5, the a positioning mechanism includes an a guide rail 910, an a slider 920 and an a locking assembly 930, the a slider 920 and the a guide rail 910 form a sliding guide assembly along the a direction, the feeding unit 300 is mounted on the a slider 920, and the a locking assembly 930 is used for locking the position of the a slider 920 on the a guide rail 910; the B position adjusting mechanism comprises a B guide rail 940, a B sliding block 950 and a B locking assembly 960, the B sliding block 950 and the B guide rail 940 form sliding guide assembly along the direction B, the A guide rail 910 is fixed on the B sliding block 950, the B guide rail 940 is fixed on the rack, and the B locking assembly 960 is used for locking the position of the B sliding block 950 on the B guide rail 940.

Further, as shown in fig. 3 to 5, the feeding unit 300 is detachably mounted on the a slider 920, the a direction is a vertical direction, the b direction is arranged along a horizontal direction, both the a direction and the b direction are perpendicular to the extending and retracting direction of the piston rod 310, and the a direction is perpendicular to the b direction, so that the extending and retracting direction, the a direction and the b direction of the piston rod 310 form a spatial coordinate system, which is used for realizing adjustment of the spatial coordinate position of the feeding unit 300, and further realizing precise adjustment of the drilling position of the drill 240.

In the above solution, as shown in fig. 3 to 5, the a locking assembly 930 includes an a adjusting screw 931 and two sets of a locking nuts 932, a first end of the a adjusting screw 931 is detachably mounted on the a guide rail 910 through an a fixing block 933, a second end of the a adjusting screw 931 is mounted on the a slider 920, a first end of the a adjusting screw 931 is movably inserted into the a fixing block 933, the two sets of a locking nuts 932 are arranged on two sides of the a fixing block 933 along a rod length direction of the a adjusting screw 931, adjusting the a adjusting screw 931 to drive the a slider 920 to displace along the a guide rail 910 and lock a position where the a slider 920 is located is achieved by rotating the two sets of a locking nuts 932, and then adjusting a coordinate position of the feeding unit 300 along the a direction. The B locking assembly 960 comprises a B adjusting screw 961 and two sets of B locking nuts 962, a first end of the B adjusting screw 961 is detachably mounted on the B guide rail 940 through a B fixing block 963, a second end of the B adjusting screw 961 is mounted on the B slider 950, a first end of the B adjusting screw 961 is movably inserted into the B fixing block 963, the two sets of B locking nuts 962 are arranged on two sides of the B fixing block 963 along the rod length direction of the B adjusting screw 961, and the B adjusting screw 961 is adjusted by rotating the two sets of B locking nuts 962 to drive the B slider 950 to displace along the B guide rail 940 and lock the position of the B slider 950, so as to adjust the coordinate position of the feeding unit 300 along the B direction.

Referring to fig. 1 to 5, the driving assembly 210 in the above-mentioned solution is formed by a motor, and the motor is in transmission connection with the transmission rod 250 through a belt transmission assembly/a gear transmission assembly to drive the transmission rod 250 to drive the rotation shaft 220 to rotate. The base of the motor is connected to the mounting block 900 described above or to the cylinder/electric cylinder block.

Referring to fig. 1 to 5, the piston rod 310 and the drill 240 are provided with a cover at an end thereof for protecting the piston rod 310, the sleeve 350, the driving rod 250 and other components from foreign objects. The housing is fixedly connected with the cylinder body of the cylinder/the electric cylinder, and the base of the motor is fixedly connected on the housing.

The damper 700 in the above-described aspect is a hydraulic damper 700. More preferably, the hydraulic damper 700 is a hydraulic damper 700 with adjustable damping coefficient, and by adjusting the damping coefficient, the feeding speed of the drill 240 can be adjusted when drilling holes in the workpiece.

In order to further prevent the drill 240 from breaking when entering the workpiece to perform drilling, the preferred solution of the embodiment of the present application is: the frame is further provided with a liquid distribution unit for distributing cooling liquid, and the liquid distribution unit is arranged above the chuck 110. By applying the cooling liquid to the chuck 110 during drilling, the temperature of the drill 240 and the workpiece at the drilling position can be reduced, and a part of cutting chips can be washed away, thereby facilitating the smooth feeding of the drill 240 in the drilling process and the smooth exit after the drilling is finished.

Further, the liquid distribution unit includes a liquid distribution port, and the liquid distribution port is arranged corresponding to the drilling position of the drill 240 on the workpiece. Through arranging the drilling position correspondence on cloth liquid mouth and the work piece, can arrange the coolant liquid to the drilling position more accurately to improve the cooling effect and wash the cutting bits, thereby guarantee the stability of punching operation and go on.

Referring to fig. 1 and 2, as the punching equipment performs the punching operation in the production process, the use of the cooling liquid is increased, and in order to improve the utilization rate of the cooling liquid and save the cost, the preferred solution of the embodiment of the present application is: still be equipped with in the frame and be used for carrying out recycle's recovery unit to the coolant liquid, recovery unit includes liquid reserve tank 1010, carry pipe fitting and delivery pump subassembly, chuck 110 assembles in liquid reserve tank 1010, liquid reserve tank 1010 is used for collecting the coolant liquid of the cloth liquid mouth spraying of cloth liquid unit, the bottom of liquid reserve tank 1010 has liquid outlet 1011, liquid outlet 1011 is through delivery pipe spare and cloth liquid unit to the intercommunication, delivery pump subassembly concatenates the middle part at carrying the pipe fitting, a coolant liquid propelling movement to cloth liquid unit in with liquid reserve tank 1010. The implementation principle of the scheme is as follows: the cooling liquid is recycled by arranging the recycling unit, so that the waste of resources can be prevented, and the utilization rate of the cooling liquid is improved. Specifically, the used cooling liquid is collected through the liquid storage tank 1010, then the liquid outlet 1011 of the liquid storage tank 1010 is communicated with the liquid distribution unit through the conveying pipe fitting, the conveying pump assembly is connected in series in the middle of the conveying pipe fitting, the cooling liquid in the liquid storage tank 1010 is pushed to the liquid distribution unit through the conveying pump assembly, the liquid distribution unit reuses the cooling liquid to distribute the cooling liquid, and therefore recycling of the cooling liquid is achieved.

Referring to fig. 1 and 2, in terms of recycling of the cooling fluid, there are some problems to be considered, for example, the used cooling fluid is usually accompanied by a large amount of cutting debris, if the used cooling fluid is directly delivered to the fluid distribution unit, it is likely to cause an abnormal situation of blocking a pipeline and damaging components of a delivery pump assembly, and therefore, in order to avoid the above-mentioned abnormality and loss, the used cooling fluid needs to be treated and then delivered back to the fluid distribution unit. The preferable scheme of the embodiment of the application is as follows: the recovery unit further comprises a filtering assembly, wherein the filtering assembly is arranged between the liquid outlet 1011 and the conveying pump assembly and is used for filtering impurities in the cooling liquid in the liquid storage tank 1010. This scheme filters the impurity in the cooling liquid in the liquid storage tank 1010 through setting up filtering component to make the cooling liquid can by rational utilization once more, also can reduce the probability of blockking up the pipeline, damaging equipment part simultaneously.

As shown in fig. 1 and fig. 2, in the process of distributing the liquid to the drilling position of the workpiece by the liquid distribution unit, the coolant is inevitably splashed to the outside of the equipment, and in order to ensure the safety of the operator and the smoothness of the production site, the preferable scheme of the embodiment of the present application is as follows: the frame is further provided with a liquid blocking member 1020 for preventing the cooling liquid from splashing outwards, and the liquid blocking member 1020 is arranged on the outer peripheral side of the chuck 110 and corresponds to the liquid distribution port of the liquid distribution unit. The implementation principle of the scheme is as follows: the liquid blocking member 1020 is arranged to prevent the cooling liquid from splashing outwards, and in particular, if the bearing ring to be punched has a plurality of parts to be punched, the liquid blocking member 1020 needs to be arranged in the vacant areas of two adjacent drilling units 200.

Specifically, the liquid blocking member 1020 is a liquid blocking plate, which is fixedly/detachably mounted in the liquid storage tank 1010.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.

Claims

1. The utility model provides a bearing ring drilling equipment which characterized in that, including the frame, is equipped with in the frame:

the clamping and positioning unit is used for clamping and positioning a workpiece to be punched;

the drilling unit is arranged corresponding to the clamping and positioning unit and is used for drilling the workpiece;

the feeding unit is mounted on the drilling unit and used for driving the drilling unit to move along the direction of the distance between the drilling unit and the workpiece;

and the regulating and controlling unit is respectively connected with the clamping and positioning unit, the drilling unit and the feeding unit and is used for respectively regulating and controlling the running states of the clamping and positioning unit, the drilling unit and the feeding unit.

2. The bearing ring punching device as claimed in claim 1, wherein the clamping and positioning unit is constituted by a chuck assembly, and a cleaning mechanism for cleaning cutting debris is provided on the chuck assembly.

3. The apparatus for perforating a bearing ring as claimed in claim 2, characterized in that the chuck assembly comprises a chuck and a plurality of jaws arranged concentrically on top of the chuck, the jaws forming a sliding guide assembly with the top of the chuck in the radial direction of the chuck, the jaws having stepped support portions for supporting and positioning the workpiece, the cleaning means being arranged in correspondence with the jaws for cleaning cutting debris on the support portions.

4. The apparatus for perforating a bearing race of claim 3 wherein the cleaning mechanism includes a nozzle disposed on the jaw and having a spray direction disposed toward the inner surface of the support portion.

5. The bearing ring punching device according to claim 3, wherein the drilling unit comprises a driving assembly, a rotating shaft and a drill bit, the driving assembly is in transmission connection with the rotating shaft, the rotating shaft is telescopically mounted on the feeding unit along the axial direction of the rotating shaft, a jacket for detachably assembling the drill bit is mounted at one end of the rotating shaft, the driving assembly drives the rotating shaft to drive the drill bit to rotate, and the feeding unit drives the rotating shaft to drive the drill bit to move along the axial direction of the rotating shaft;

the drill bit and the clamping jaw are arranged in a staggered mode.

6. The bearing ring punching device according to claim 5, wherein the feeding unit is formed by a cylinder or an electric cylinder having a piston rod, the rotating shaft is rotatably mounted on the piston rod, and the rotating shaft is concentrically arranged with the piston rod, and the piston rod regulates the synchronous movement of the rotating shaft by extending/retracting to realize the approaching/separating of the drill bit to/from the workpiece.

7. The bearing ring punching device according to claim 6, wherein the piston rod is provided with a trigger member moving synchronously therewith, the two ends of the stroke of the trigger member are respectively provided with an A sensor and a B sensor, the A sensor and the B sensor are respectively used for sensing position information when the trigger member reaches the two ends of the stroke and transmitting the position information to the regulating and controlling unit, and the regulating and controlling unit respectively regulates and controls the operating states of the driving assembly and the feeding unit according to the position information.

8. The bearing ring punching device according to claim 7, wherein the trigger member comprises a trigger part A and a trigger part B which are arranged at intervals along the rod length direction of the piston rod, the trigger parts A and B are respectively arranged corresponding to the sensor A and the sensor B, the sensor A is used for sensing the position information A of the trigger part A and transmitting the position information A to the control unit when the piston rod is retracted to the proper position, the sensor B is used for sensing the position information B of the trigger part B and transmitting the position information B to the control unit when the piston rod is extended to the proper position, and the control unit is used for controlling the piston rod to stop retracting after receiving the position information A and controlling the piston rod to be converted from the extended state to the retracted state after receiving the position information B.

9. The bearing ring punching device according to claim 8, wherein the piston rod is provided with a connecting seat, the trigger member comprises an A trigger part, a B trigger part and a C adjusting screw rod, the C adjusting screw rod is detachably mounted on the connecting seat, the rod length direction of the C adjusting screw rod is consistent with the rod length direction of the piston rod, the A trigger part and the B trigger part are in threaded fit connection with the C adjusting screw rod, and the A trigger part/the B trigger part is rotated to adjust the position of the A trigger part/the B trigger part on the C adjusting screw rod.

10. The apparatus for punching bearing rings according to claim 9, comprising at least one of the following features a to S:

A.A the trigger part and the trigger part B are respectively composed of a pie-shaped trigger block;

B. the piston rod is also connected with a damper, and the damper is used for adjusting the moving speed of the piston rod at different positions;

C. the rack is also provided with a stroke limiting part, the stroke limiting part is positioned on a moving path of the damper, the damper is arranged on a connecting seat, the connecting seat is detachably assembled on the piston rod, and the damper is abutted and matched with the stroke limiting part to reduce the moving speed of the piston rod;

D. the stroke limiting part is provided with a C sensor which is used for abutting and matching with the damper, the C sensor is used for sensing a pressure signal when the damper abuts and transmitting the pressure signal to the regulating and controlling unit, the regulating and controlling unit regulates and controls the driving assembly to start to operate when receiving the pressure signal and regulates and controls the driving assembly to stop operating when not receiving the pressure signal;

E. when the drill bit is positioned at the periphery of the workpiece, the damper and the stroke limiting part are arranged in a separated manner; when the drill bit contacts the workpiece or enters the workpiece, the damper is in an abutting state with the stroke limiting part;

F. the rack is also fixedly provided with a guide rod, the guide rod is arranged in parallel with the piston rod, and the connecting seat and the guide rod form sliding guide assembly connection along the rod length direction of the guide rod;

G. the transmission rod is rotatably arranged on the rack, the transmission rod and the rotating shaft are concentrically arranged, the rod length direction of the transmission rod is consistent with the axial direction of the rotating shaft, the transmission rod is limited and arranged on the rack along the rod length direction of the transmission rod, one end of the transmission rod is connected with one end, far away from the drill bit, of the rotating shaft, the transmission rod and the rotating shaft form sliding guide fit along the axial direction of the rotating shaft, and the driving assembly is in transmission connection with the transmission rod and used for driving the transmission rod and the rotating shaft;

H. the piston rod is formed by a hollow rod piece, the rotating shaft is rotatably arranged in the rod of the piston rod and is connected with the transmission rod through the elastic coupling;

I. the end part of the piston rod, which is far away from the drill bit, is provided with a sleeve, the piston rod and the sleeve are arranged concentrically and sequentially, the sleeve is sleeved on the transmission rod in a hollow manner, the trigger piece and the connecting seat are both arranged on the sleeve, and the trigger piece and the damper are respectively positioned on two sides of the sleeve;

J. the driving assembly is arranged on the feeding unit; the mounting seat for mounting the feeding unit is fixedly arranged on the rack and comprises an A positioning mechanism and a B positioning mechanism, the A positioning mechanism is used for adjusting the position of the feeding unit along the a direction, the B positioning mechanism is used for adjusting the position of the feeding unit along the B direction, the a direction and the B direction are intersected with the telescopic direction of the piston rod, and the a direction and the B direction are intersected;

K.A the positioning mechanism comprises a guide rail A, a slide block A and a locking component A, the slide block A and the guide rail A form a slide guide assembly along the direction a, the feeding unit is arranged on the slide block A, and the locking component A is used for locking the position of the slide block A on the guide rail A; the B position adjusting mechanism comprises a B guide rail, a B sliding block and a B locking assembly, the B sliding block and the B guide rail form sliding guide assembly along the direction B, the A guide rail is fixed on the B sliding block, the B guide rail is fixed on the rack, and the B locking assembly is used for locking the position of the B sliding block on the B guide rail;

l, a liquid distribution unit for distributing cooling liquid is further arranged on the rack and arranged above the chuck;

the liquid distribution unit comprises a liquid distribution port, and the liquid distribution port is arranged corresponding to the drilling position of the drill bit on the workpiece;

the rack is also provided with a recovery unit for recovering and utilizing the cooling liquid, the recovery unit comprises a liquid storage tank, a conveying pipe fitting and a conveying pump assembly, the chuck is assembled in the liquid storage tank, the liquid storage tank is used for collecting the cooling liquid sprayed to a liquid distribution port of the liquid distribution unit, the bottom of the liquid storage tank is provided with a liquid outlet, the liquid outlet is communicated with the liquid distribution unit through the conveying pipe fitting, and the conveying pump assembly is connected in series in the middle of the conveying pipe fitting and used for pushing the cooling liquid in the liquid storage tank to the liquid distribution unit;

the recovery unit also comprises a filtering assembly, and the filtering assembly is arranged between the liquid outlet and the conveying pump assembly and is used for filtering impurities in the cooling liquid in the liquid storage tank;

p, a liquid blocking piece for preventing cooling liquid from splashing outwards is further arranged on the machine frame, and the liquid blocking piece is arranged on the outer peripheral side of the chuck and corresponds to the liquid distribution port of the liquid distribution unit;

q, the driving component is a motor;

r. the damper is a hydraulic damper;

s, the sleeve is detachably assembled and connected with the piston rod, and the connecting seat is detachably assembled and connected with the sleeve.