A horizontal milling machine

Abstract

The application relates to the technical field of milling machines, and discloses a horizontal milling machine which comprises a safety ring, the bottom of the safety ring is fixedly provided with contact bosses, the number of the contact bosses is six and the contact bosses are distributed in the form of an annular array, the contact bosses extend to the lower side of a driven sleeve through a communication groove, and an induction connecting seat is arranged at the position corresponding to the contact bosses on the inner ring of the safety ring. When a milling cutter collides, the milling cutter is subjected to a great impact force, the safety ring is subjected to a great rotating moment, all the induction connecting seats are disconnected from the inner ring of the annular groove, the induction connecting seats rotate in the annular groove, other sectorial stroke plates are disconnected from the contact bosses, the long rod is moved to the position close to the left side in the guide groove, other milling cutters are retracted to the position directly below the driven sleeve, the problem that the milling cutters are scrapped due to collision is avoided, and the reliability of the device is improved.

Description

TECHNICAL FIELD

[0001] The application relates to a horizontal milling machine. BACKGROUND

[0002] A milling machine is a common machining machine tool, which is commonly used for machining the plane of a workpiece. In order to improve machining efficiency, the diameter of a milling cutter is increased to increase the contact area of the milling cutter and the workpiece. As the diameter of the milling cutter increases, the manufacturing cost of the milling cutter also increases. Once the milling cutter is hit, the entire milling cutter is scrapped, resulting in loss. In the process of milling, the sprayed cooling liquid covers the entire cutter body and the workpiece, and most of the cooling liquid cannot participate in the cooling operation of the workpiece and the cutter, resulting in waste of the cooling liquid. To solve the above problems, the application provides a horizontal milling machine. SUMMARY

[0003] The application provides a horizontal milling machine, which has the advantages of automatically protecting the cutter when the cutter is hit, and solves the problem that the entire cutter is scrapped due to the hit.

[0004] To achieve the above purpose, the application adopts the following technical scheme: a horizontal milling machine, comprising a mounting frame, a first feeding motor is arranged on the bottom of the mounting frame close to the back surface, a tool clamp is arranged on the output end of the first feeding motor, the first feeding motor controls the forward and backward movement of the tool clamp, a second feeding motor is arranged on the top of the mounting frame close to the back surface, a third feeding motor is fixedly installed on the output end of the second feeding motor, the second feeding motor controls the forward and backward movement of the third feeding motor, a power motor is fixedly installed on the front end of the third feeding motor, the third feeding motor controls the upward and downward movement of the power motor, a driving device is fixedly installed on the bottom output end of the power motor, a driven device is movably sleeved on the outer surface of the driving device, and a stroke device is movably sleeved on the bottom of the driving device.

[0005] Further, the driving device comprises a driving shaft, the driving shaft is a pipe with a bottom seal, a bearing is sleeved on the outer surface of the driving shaft, a limiting protrusion is arranged on the outer surface of the driving shaft close to the bottom, a first semicircular hole is formed in the bottom of the driving shaft, a transmission device is movably sleeved on the bottom of the driving shaft, and an upper connecting seat is arranged on the outer surface of the driving shaft above the limiting protrusion.

[0006] Specifically, the inside of the driving shaft has cooling liquid.

[0007] Further, the transmission device comprises a transmission pipe, a lower connecting seat is fixedly installed on the outer surface of the transmission pipe near the top, a transmission spring is clamped on the top of the lower connecting seat, a top plate is fixedly installed on the inner ring of the transmission pipe near the top, a second semicircular hole is formed in the top of the top plate, the cooling liquid enters the inside of the shunt bin through the first semicircular hole and the second semicircular hole, an annular matching groove is formed in the position above the top plate on the inner ring of the transmission pipe, a transmission disc is fixedly installed on the outer surface of the transmission pipe near the middle, a shunt bin is arranged below the transmission disc on the outer surface of the transmission pipe, the shunt bin is in communication with the inner cavity of the transmission pipe, a shunt nozzle is arranged on the outer surface of the shunt bin, the number of the shunt nozzles is six and they are distributed in the form of annular array.

[0008] Specifically, the transmission disc comprises a transmission gear disc and a bottom disc, and the outer circle radius of the bottom disc is greater than the outer circle radius of the transmission gear disc.

[0009] Specifically, the annular matching groove is sleeved with the limiting protrusion, and the transmission spring is clamped with the top of the inner cavity of the upper connecting seat.

[0010] Specifically, the top surface of the driving shaft is in contact with the top surface of the top plate, and the first semicircular hole and the second semicircular hole are in a dislocation state, in which the cooling liquid cannot pass through the first semicircular hole and the second semicircular hole.

[0011] Further, the driven device comprises a driven sleeve, a bearing fixing sleeve is fixedly connected between the inner ring of the driven sleeve and the outer surface of the driving shaft, a countersunk hole is formed in the bottom of the driven sleeve, a partition plate is fixedly installed on the position outside the countersunk hole on the bottom of the driven sleeve, the number of the partition plates is six and they are distributed in the form of annular array, a guide groove is formed in the position near the countersunk hole between the partition plates, an arc-shaped guide rail is arranged on the position outside the guide groove between the partition plates, an annular groove is formed in the position above the partition plate on the outer surface of the driven sleeve, a communication groove is formed in the position of the bottom of the annular groove on the right side of the partition plate, and a safety device is fixedly installed in the inside of the annular groove.

[0012] Further, the guide groove is arranged in an arc shape, and the distance between the middle position of the guide groove and the axis of the driven sleeve is greater than the distance between the two end positions of the guide groove and the axis of the driven sleeve.

[0013] Further, the safety device comprises a safety ring, a contact boss is fixedly installed on the bottom of the safety ring, the number of the contact bosses is six and they are distributed in the form of annular array, the contact bosses extend to the below of the driven sleeve through the communication groove, and a sensing connecting seat is arranged on the inner ring of the safety ring in the position corresponding to the contact boss.

[0014] Specifically, one end of the induction connecting seat is fixedly connected with the inner ring of the ring-shaped groove.

[0015] Specifically, the output end of the induction connecting seat is connected with the input end of the power motor through signal connection, and the induction connecting seat is disconnected from the ring-shaped groove to control the power motor to stop rotating through signal connection.

[0016] Further, the stroke device comprises a fan-shaped stroke plate, the top of the fan-shaped stroke plate is provided with a stroke groove, the stroke groove is in sliding fit with the arc-shaped guide rail, the inner ring of the fan-shaped stroke plate is provided with a gear tooth, the gear tooth is in mesh with a transmission gear disc, and a stepped hole is formed in the position between the gear tooth and the stroke groove at the bottom of the fan-shaped stroke plate.

[0017] Specifically, the stepped hole comprises a through hole and a shallow hole, and the length of the shallow hole is greater than that of the through hole.

[0018] Further, the telescopic device comprises a telescopic seat, the top of the telescopic seat is fixedly provided with a matching long rod and a matching short rod, the matching long rod is movably installed in the inside of the through hole, the matching short rod is movably installed in the inside of the shallow hole, the matching long rod extends out of the inside of the through hole and is in sliding fit with the guide groove, the back of the inside of the telescopic seat is provided with a slide rail, a liquid injection hole is formed in the position close to one end at the top of the slide rail, the liquid injection hole extends to the back of the outer surface of the telescopic seat, a slide hole is formed in the right wall of the inside of the telescopic seat, and a milling device is movably installed in the inside of the slide hole.

[0019] Specifically, the rear end of the liquid injection hole is connected with the shunt nozzle through a pipeline.

[0020] Further, the milling device comprises a fixed tool holder, the bottom of the fixed tool holder is fixedly provided with a milling cutter, the right side of the outer surface of the fixed tool holder is provided with a spring sliding rod, the back of the fixed tool holder is provided with a sliding groove, the sliding groove is in sliding fit with the slide rail, and the sliding groove is in an initial state to close the liquid injection hole.

[0021] Further, when the fan-shaped stroke plate moves to the position in contact with the contact boss, the fan-shaped stroke plate is located in the position between the two adjacent partition plates.

[0022] The application has the following beneficial effects.

[0023] The device can utilize the moment formed in the rotation process to drive the milling cutter to automatically extend, and after the moment disappears, the milling cutter can automatically retract, and when the collision occurs, the huge impact force is transmitted to the contact boss through the fan-shaped stroke plate, so that the induction connecting seat is disconnected with the inner ring of the ring-shaped groove, the distance driving stroke device continues to move due to the rotation of the driving device, so that the milling cutter automatically retracts, and the other milling cutters are protected after the collision, and after the induction connecting seat is disconnected, the power motor is controlled to stop quickly, in addition, when the rotation speed of the power motor output is high or the feeding speed of the device is fast, the heat generated in the milling process is increased, and the device can automatically adjust the supply amount of the cooling liquid to ensure that the workpiece and the cutter are at the most suitable temperature. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which form a part of the specification, illustrate the embodiments of the present application and serve to explain the principles of the present application.

[0025] The present disclosure can be understood moreappreciably by the following detailed description when taken in conjunction with the accompanying drawings, in which:

[0026] Figure 1 is a structural diagram of the present application;

[0027] Figure 2 is a structural diagram of the power equipment of the present application;

[0028] Figure 3 is a structural diagram of the driving device and the driven device of the present application;

[0029] Figure 4 is a sectional view of the structural diagram of the driving device and the driven device of the present application;

[0030] Figure 5 is a structural diagram of the driving device of the present application;

[0031] Figure 6 is a top view of the structural diagram of the driving device of the present application;

[0032] Figure 7 is a top view of the structural diagram of the transmission device of the present application;

[0033] Figure 8 is a bottom view of the structural diagram of the transmission device of the present application;

[0034] Figure 9 is a sectional view of the structural diagram of the transmission device of the present application;

[0035] Figure 10 is a structural diagram of the driven device of the present application;

[0036] Figure 11 is a bottom view of the structural diagram of the driven device of the present application;

[0037] Figure 12Figure of the structure of the safety device of the present application;

[0038] Figure 13 Figure of the structure of the stroke device of the present application;

[0039] Figure 14 Figure of the structure of the stroke device of the present application;

[0040] Figure 15 Figure of the structure of the telescopic device and the milling device of the present application;

[0041] Figure 16 Figure of the structure of the telescopic device of the present application;

[0042] Figure 17 Figure of the structure of the milling device of the present application.

[0043] Figure; 1, mounting frame; 2, first feeding motor; 3, tool clamp; 4, second feeding motor; 5, third feeding motor; 6, power motor; 7, driving device; 71, driving shaft; 72, limiting protrusion; 73, first semicircular hole; 74, upper connecting seat; 8, driven device; 81, driven sleeve; 82, counterbore; 83, partition plate; 84, guide groove; 85, arc-shaped guide rail; 86, ring-shaped groove; 87, communication groove; 9, stroke device; 91, fan-shaped stroke plate; 92, stroke groove; 93, stepped hole; 93a, through hole; 93b, shallow hole; 10, transmission device; 101, transmission pipe; 102, lower connecting seat; 103, transmission spring; 104, top plate; 105, second semicircular hole; 106, ring-shaped matching groove; 107, transmission disc; 107a, transmission tooth disc; 107b, bottom disc; 108, shunt bin; 109, shunt nozzle; 11, safety device; 111, safety ring; 112, contact boss; 113, induction connecting seat; 12, telescopic device; 121, telescopic seat; 122, matching short rod; 123, matching long rod; 124, slide rail; 125, liquid injection hole; 13, milling device; 131, fixed tool holder; 132, milling cutter; 133, spring slide rod; 134, slide groove. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0045] A horizontal milling machine, please refer to Figures 1-4Including the installation frame 1, the first feed motor 2 is arranged at the position close to the back of the bottom of the installation frame 1, the output end of the first feed motor 2 is provided with a tool clamp 3, the first feed motor 2 controls the tool clamp 3 to move back and forth, the second feed motor 4 is arranged at the position close to the back of the top of the installation frame 1, the output end of the second feed motor 4 is fixedly installed with the third feed motor 5, the second feed motor 4 controls the third feed motor 5 to move back and forth, the front end of the third feed motor 5 is fixedly installed with the power motor 6, the third feed motor 5 controls the power motor 6 to move up and down, the bottom output end of the power motor 6 is fixedly installed with the driving device 7, the outer surface of the driving device 7 is movably sleeved with the driven device 8, the bottom of the driving device 7 is movably sleeved with the stroke device 9.

[0046] Please refer to Figures 5-6 The driving device 7 comprises a driving shaft 71, the driving shaft 71 is a pipe with a bottom seal, a bearing is sleeved on the outer surface of the driving shaft 71, a limiting protrusion 72 is arranged at the position close to the bottom of the outer surface of the driving shaft 71, a first semicircular hole 73 is formed in the bottom of the driving shaft 71, the bottom of the driving shaft 71 is movably sleeved with a transmission device 10, and an upper connecting seat 74 is arranged on the outer surface of the driving shaft 71 and located above the limiting protrusion 72.

[0047] Please refer to Figure 5 The inside of the driving shaft 71 has cooling liquid.

[0048] Please refer to Figures 7-9 The transmission device 10 comprises a transmission pipe 101, a lower connecting seat 102 is fixedly installed on the outer surface of the transmission pipe 101 and located close to the top, the top of the lower connecting seat 102 is clamped with a transmission spring 103, a top plate 104 is fixedly installed on the inner ring of the transmission pipe 101 and located close to the top, a second semicircular hole 105 is formed in the top of the top plate 104, the cooling liquid enters the inside of the shunt bin 108 through the first semicircular hole 73 and the second semicircular hole 105, an annular matching groove 106 is formed in the inner ring of the transmission pipe 101 and located above the top plate 104, a transmission disc 107 is fixedly installed on the outer surface of the transmission pipe 101 and located close to the middle, a shunt bin 108 is arranged on the outer surface of the transmission pipe 101 and located below the transmission disc 107, the shunt bin 108 is connected with the inner cavity of the transmission pipe 101 in communication, a shunt nozzle 109 is arranged on the outer surface of the shunt bin 108, the number of the shunt nozzle 109 is six, and the shunt nozzle 109 is distributed in the form of annular array.

[0049] Please refer to Figures 7-9 The transmission disc 107 comprises a transmission gear disc 107a and a bottom disc 107b, the outer circle radius of the bottom disc 107b is greater than the outer circle radius of the transmission gear disc 107a.

[0050] Please refer to Figure 5 And Figures 7-9The annular fitting groove 106 is sleeved with the limiting protrusion 72, and the transmission spring 103 is clamped with the top of the inner cavity of the upper connecting seat 74.

[0051] Please refer to Figures 6-9 The top surface of the driving shaft 71 is in contact with the top surface of the top plate 104, and the first semicircular hole 73 and the second semicircular hole 105 are in a dislocation state. When in the dislocation state, the cooling liquid cannot pass through the first semicircular hole 73 and the second semicircular hole 105.

[0052] Please refer to Figures 4-5 and Figures 10-11 The driven device 8 includes a driven sleeve 81, the inner circle of the driven sleeve 81 is sleeved with the bearing fixing sleeve of the outer surface of the driving shaft 71, the bottom of the driven sleeve 81 is provided with a countersunk hole 82, the position outside the countersunk hole 82 on the bottom of the driven sleeve 81 is fixedly installed with a partition plate 83, the number of the partition plate 83 is six and is distributed in an annular array, the position between the partition plate 83 close to the countersunk hole 82 is provided with a guide groove 84, the position between the partition plate 83 outside the guide groove 84 is provided with an arc-shaped guide rail 85, the position above the partition plate 83 on the outer surface of the driven sleeve 81 is provided with an annular groove 86, the bottom of the annular groove 86 is provided with a communication groove 87 at the position to the right of the partition plate 83, and the inside of the annular groove 86 is fixedly installed with a safety device 11.

[0053] Please refer to Figure 11 The guide groove 84 is arc-shaped, and the distance L1 between the middle position of the guide groove 84 and the axis of the driven sleeve 81 is greater than the distance L2 between the two end positions of the guide groove 84 and the axis of the driven sleeve 81 as shown in Figure 11 .

[0054] Please refer to Figure 10 and Figure 12 The safety device 11 includes a safety ring 111, the bottom of the safety ring 111 is fixedly installed with a contact boss 112, the number of the contact boss 112 is six and is distributed in an annular array, the contact boss 112 extends to the below of the driven sleeve 81 through the communication groove 87, and the inner circle of the safety ring 111 is provided with an induction connecting seat 113 at the position corresponding to the contact boss 112.

[0055] Please refer to Figure 10 and Figure 12 One end of the induction connecting seat 113 is fixedly connected with the inner circle of the annular groove 86.

[0056] In the case of a failure in the processing process, for example, when the cutter hits, the milling cutter 132 is subjected to a huge impact force, which is transmitted to the contact boss 112 through the sector stroke plate 91, so that the safety ring 111 is subjected to a huge rotation torque, so that all the induction connecting seats 113 are disconnected with the inner ring of the ring groove 86, and the induction connecting seat 113 rotates inside the ring groove 86, so that the other sector stroke plate 91 is in contact with the contact boss 112, and under the action of the torque conducted by the transmission gear disc 107a, the sector stroke plate 91 moves to the left side of the partition plate 83, at this time, the long rod 122 is moved to the left side of the guide groove 84, so that the other milling cutter 132 is retracted to the bottom of the driven sleeve 81, and all the actions occur in the cutter hitting moment, avoiding the problem of tool scrap caused by the cutter hitting again, improving the reliability of the device.

[0057] Please refer to Figure 1 , Figure 10 and Figure 12 , the output end of the induction connecting seat 113 is connected with the input end of the power motor 6 through signal connection, and the induction connecting seat 113 is disconnected with the ring groove 86, and the power motor 6 is stopped through signal connection control.

[0058] When the cutter hits, the induction connecting seat 113 is disconnected with the inner ring of the ring groove 86, and the output end of the induction connecting seat 113 is connected with the input end of the power motor 6 through signal connection, so that the power motor 6 is quickly stopped, and the first feeding motor 2, the second feeding motor 4 and the third feeding motor 5 are also stopped at the same time, avoiding the loss expansion caused by the operator's operation not in time after the cutter hits, and improving the practicability of the device.

[0059] Please refer to Figure 8 , Figure 10 and Figures 13-14 , the stroke device 9 includes a sector stroke plate 91, the top of the sector stroke plate 91 is provided with a stroke groove 92, the stroke groove 92 is slidably connected with the arc-shaped guide rail 85, the inner ring of the sector stroke plate 91 is provided with a gear, and the gear is engaged with the transmission gear disc 107a, and the bottom of the sector stroke plate 91 is provided with a stepped hole 93 between the gear and the stroke groove 92.

[0060] Please refer to Figure 14 , the stepped hole 93 includes a through hole 93a and a shallow hole 93b, and the length of the shallow hole 93b is greater than that of the through hole 93a.

[0061] Please refer to Figure 4 , Figure 10 and Figures 14-16The telescopic device 12 comprises a telescopic base 121, a matching long rod 122 movably installed inside the through hole 93a, and a matching short rod 123 movably installed inside the shallow hole 93b. The matching long rod 122 extends out of the inside of the through hole 93a and is in sliding fit with the guide groove 84. The back of the inside of the telescopic base 121 is provided with a slide rail 124, and a liquid injection hole 125 is formed on the top of the slide rail 124 near one end. The liquid injection hole 125 extends through the telescopic base 121 to the back of the outer surface. A slide hole is formed on the right wall of the inside of the telescopic base 121, and a milling device 13 is movably installed inside the slide hole.

[0062] Please refer to Figure 9 and Figure 15 The rear end of the liquid injection hole 125 is connected with the shunt nozzle 109 through a pipeline.

[0063] Please refer to Figure 17 The milling device 13 comprises a fixed tool holder 131, a milling cutter 132 fixedly installed on the bottom of the fixed tool holder 131, a spring slide rod 133 provided on the right side of the outer surface of the fixed tool holder 131, and a sliding groove 134 provided on the back of the fixed tool holder 131. The sliding groove 134 is in sliding fit with the slide rail 124, and the sliding groove 134 initially covers the liquid injection hole 125.

[0064] In the initial state, the fan-shaped travel plate 91 is located near the right side between the two partition plates 83. At this time, the matching long rod 122 is in cooperation with the guide groove 84, and the cooperation position is located on the right side in the guide groove 84. At this time, the matching long rod 122 and the axis of the driven sleeve 81 are in the shortest state, so that the telescopic device 12 is in the retracted state, and the front cutter of the milling cutter 132 is in the state of not extending out and is completely below the driven sleeve 81, thereby playing a protective role on the milling cutter 132, avoiding the problem that the cutter is damaged due to direct collision with the workpiece and other structures in the state that the device is not running, and improving the practicability of the device.

[0065] Please refer to Figure 10 and Figures 12-13 When the fan-shaped travel plate 91 moves to the position in contact with the contact boss 112, the fan-shaped travel plate 91 is located in the middle of the two adjacent partition plates 83.

[0066] In the process of driving the main shaft and driving the driving device 7 to rotate by the power motor 6, the driving device 10 as a whole is driven to rotate under the transmission effect of the upper connecting seat 74 and the transmission spring 103. At this time, the inner circle of the sector stroke plate 91 is provided with a gear, and the gear is engaged with the transmission gear disc 107a, so that the transmission gear disc 107a transmits the torque to the sector stroke plate 91 through the gear in the inner circle of the sector stroke plate 91, thereby driving the sector stroke plate 91 to move along the arc-shaped guide rail 85 until one side of the sector stroke plate 91 contacts the contact boss 112. At this time, the long rod 122 is moved to the inside of the arc-shaped guide rail 85 close to the middle position. Since the distance L1 between the middle position of the guide groove 84 and the axis of the driven sleeve 81 is greater than the distance L2 between the two end positions of the guide groove 84 and the axis of the driven sleeve 81 as shown in Figure 11 so that the telescopic device 12 as a whole is extended in the process of moving the sector stroke plate 91, and the milling cutter 132 is synchronously extended, so that the device can automatically leave the protected state and enter the processing state in the process of rotating. In addition, after the power motor 6 stops rotating, the driving device 7 and the transmission device 10 will quickly stop rotating. Under the action of inertia, the sector stroke plate 91 is reset, so that the milling cutter 132 is retracted, thereby realizing the effect of automatically extending and retracting the milling cutter 132 according to the state of the power motor 6, and improving the degree of automation of the device.

[0067] When the device is milling the workpiece, the front end of the milling cutter 132 contacts the workpiece, and the force generated by milling pushes the milling cutter 132 to slide along the slide rail 124 in the opposite direction. At this time, the liquid injection hole 125 is in an open state, and the cooling liquid is injected through the liquid injection hole 125. When the front end of the milling cutter 132 is separated from the workpiece, the milling cutter 132 is reset under the elastic force of the spring slide rod 133. At this time, the liquid injection hole 125 is in a closed state, and the cooling liquid stops being injected through the liquid injection hole 125. The cooling liquid can accurately cool the milling cutter and the workpiece in the process of being injected, so as to avoid excessive waste of the cooling liquid, realize the effect of saving the cooling liquid to the maximum extent under the premise of ensuring the temperature stability of the workpiece and the milling cutter, and effectively reduce the use cost of the device.

[0068] In the process of milling, the fixed tool holder 131 slides along the slide rail 124. Since the slide rail 124 is arc-shaped, and the axis of the slide rail 124 is on the same center line as the axis of the driven sleeve 81, the rotation surface of the front end of the milling cutter 132 does not change in the process of sliding, thereby ensuring the processing accuracy.

[0069] When the rotational speed of the power motor 6 is high or the feeding speed of the device is fast, the heat generated in the contact process between the cutter at the front end of the milling cutter 132 and the workpiece increases, and at the same time, the torque difference between the driving device 7 and the transmission device 10 increases, the deflection angle difference between the limiting protrusions 72 and the top plate 104 increases, the communication area between the first semicircular hole 73 and the second semicircular hole 105 increases, the flow of the cooling liquid through the first semicircular hole 73 and the second semicircular hole 105 per unit time increases, thereby increasing the speed of the cooling liquid through the split nozzle 109 and the liquid injection hole 125, so that the heat generated in the contact between the cutter and the workpiece during milling is proportional to the injection amount of the cooling liquid, and the injection amount of the cooling liquid of the device can be automatically adjusted according to the machining mode, thereby improving the automation degree of the device.

[0070] The use method of the present application is as follows:

[0071] In the initial state, the fan-shaped travel plate 91 is located between the two partition plates 83 near the right side, at this time, the matching long rod 122 and the guide groove 84 are in a matching state, and the matching position is located on the right side in the guide groove 84, at this time, the matching long rod 122 and the axis of the driven sleeve 81 are in the shortest state, so that the telescopic device 12 is in the retracted state, the front cutter of the milling cutter 132 is in the state of not extending, and is completely below the driven sleeve 81, which plays a protective role on the milling cutter 132. During the driving of the power motor 6 to drive the main shaft and drive the driving device 7 to rotate, the driving effect of the upper connecting seat 74 and the transmission spring 103 drives the transmission device 10 to rotate as a whole, at this time, the inner circle of the fan-shaped travel plate 91 is provided with a gear, and the gear is engaged with the transmission gear disc 107a, so that the transmission gear disc 107a transmits the torque to the fan-shaped travel plate 91 through the gear in the inner circle of the fan-shaped travel plate 91, thereby driving the fan-shaped travel plate 91 to move along the arc-shaped guide rail 85 until one side of the fan-shaped travel plate 91 contacts the contact boss 112, at this time, the matching long rod 122 moves to the position near the middle of the arc-shaped guide rail 85, and since the distance L1 between the middle position of the guide groove 84 and the axis of the driven sleeve 81 is greater than the distance L2 between the two end positions of the guide groove 84 and the axis of the driven sleeve 81, the matching long rod 122 is in the state of being driven by the arc-shaped guide rail 85 to move along the arc-shaped guide rail 85, and the matching long rod 122 is in the state of being driven by the arc-shaped guide rail 85 to move along the arc-shaped guide rail 85. Figure 11shown, so that the telescopic device 12 as a whole is extended during the movement of the sector stroke plate 91, and the milling cutter 132 is synchronously extended, so that the device can automatically leave the protected state and enter the processing state during rotation. In addition, the driving device 7 and the transmission device 10 will quickly stop after the power motor 6 stops rotating, and the sector stroke plate 91 resets under the action of inertia, so that the milling cutter 132 retracts. In the case of a fault during processing, such as a collision, the milling cutter 132 receives a large impact force at this time, which is transmitted to the contact boss 112 through the sector stroke plate 91, causing the safety ring 111 to receive a large rotational torque, causing all the induction connection seats 113 to be disconnected from the inner ring of the ring-shaped groove 86, and causing the induction connection seat 113 to rotate inside the ring-shaped groove 86, causing the other sector stroke plates 91 to be disconnected from the contact boss 112, and under the action of the torque transmitted by the transmission gear disc 107a, the sector stroke plate 91 moves towards the left side partition plate 83, at this time the long rod 122 moves to the left side of the guide groove 84, so that the other milling cutters 132 retract to the position directly below the driven sleeve 81, and all actions occur at the moment of collision. When the induction connection seat 113 is disconnected from the inner ring of the ring-shaped groove 86, the output end of the induction connection seat 113 is connected to the input end of the power motor 6 through signal connection, so that the power motor 6 quickly stops, and the first feed motor 2, the second feed motor 4 and the third feed motor 5 also stop at the same time. When the device is milling the workpiece, when the front end of the milling cutter 132 contacts the workpiece, the milling force pushes the milling cutter 132 to slide along the slide rail 124, at this time the spray hole 125 is in an open state, and the cooling liquid is sprayed out through the spray hole 125. When the front end of the milling cutter 132 is disconnected from the workpiece, the milling cutter 132 resets under the action of the spring slide rod 133, at this time the spray hole 125 is in a closed state, and the cooling liquid stops being sprayed out, ensuring that the cooling liquid can accurately cool the milling cutter and the workpiece in the milling state. After the milling cutter and the workpiece are disconnected, the cooling liquid stops being sprayed out. During milling, the fixed tool holder 131 slides along the slide rail 124, and the slide rail 124 is arc-shaped and has the same center line as the driven sleeve 81, so that the rotation surface of the front end of the milling cutter 132 does not change during sliding. When the output speed of the power motor 6 is high or the feed speed of the device is fast, the heat generated during the contact between the tool at the front end of the milling cutter 132 and the workpiece increases, and at the same time, the torque difference between the driving device 7 and the transmission device 10 increases, the deflection angle difference between the limiting protrusion 72 and the top plate 104 increases, and the communication area between the first semicircular hole 73 and the second semicircular hole 105 increases,The flow of the cooling liquid through the first semicircular hole 73 and the second semicircular hole 105 is increased per unit time, thereby increasing the speed of the cooling liquid through the split nozzle 109 and the liquid injection hole 125, so that the heat generated by the contact between the cutter and the workpiece during milling is proportional to the amount of cooling liquid sprayed, and the amount of cooling liquid sprayed by the device can be automatically adjusted according to the machining method.

Claims

1. A horizontal milling machine, characterized in that, The system includes a mounting frame (1), on which a first feed motor (2) is located near the back of the bottom. A tooling fixture (3) is located at the output end of the first feed motor (2). On the top of the mounting frame (1) near the back, a second feed motor (4) is located. A third feed motor (5) is fixedly mounted at the output end of the second feed motor (4). A power motor (6) is fixedly mounted at the front end of the third feed motor (5). An active device (7) is fixedly mounted at the bottom output end of the power motor (6). A driven device (8) is movably fitted on the outer surface of the active device (7). A stroke device (9) is movably fitted at the bottom of the active device (7). Includes a drive shaft (71), which is a pipe with a sealed bottom. A bearing is fitted on the outer surface of the drive shaft (71). A limiting protrusion (72) is provided on the outer surface of the drive shaft (71) near the bottom. A first semi-circular hole (73) is opened at the bottom of the drive shaft (71). A transmission device (10) is movably fitted on the bottom of the drive shaft (71). An upper connecting seat (74) is provided on the outer surface of the drive shaft (71) above the limiting protrusion (72). Coolant is inside the drive shaft (71). The driven device (8) includes a driven sleeve (81). The inner ring of the driven sleeve (81) is fixedly fitted with the bearing fitted on the outer surface of the drive shaft (71). The driven sleeve (81) has a countersunk hole (82) at its bottom. A partition plate (83) is fixedly installed on the bottom of the driven sleeve (81) at a position outside the countersunk hole (82). There are six partition plates (83) arranged in a ring array. A guide groove (84) is provided between the partition plates (83) near the countersunk hole (82). An arc-shaped guide rail (85) is provided between the partition plates (83) at a position outside the guide groove (84). An annular groove (86) is provided on the outer surface of the driven sleeve (81) above the partition plate (83). A connecting groove (87) is provided at the bottom of the annular groove (86) to the right of the partition plate (83). The interior of the annular groove (86) A safety device (11) is fixedly installed; the guide groove (84) is arc-shaped, and the distance L1 between the middle position of the guide groove (84) and the axis of the driven sleeve (81) is greater than the distance L2 between the two ends of the guide groove (84) and the axis of the driven sleeve (81); the safety device (11) includes a safety ring (111), and a contact boss (112) is fixedly installed at the bottom of the safety ring (111). There are six contact bosses (112) and they are distributed in a ring array. The contact bosses (112) extend through the connecting groove (87) to the bottom of the driven sleeve (81). An induction connection seat (113) is provided at the position corresponding to the contact bosses (112) on the inner ring of the safety ring (111).One end of the induction connector (113) is fixedly connected to the inner ring of the annular groove (86); the output end of the induction connector (113) is connected to the input end of the power motor (6) via a signal connection.

2. A horizontal milling machine according to claim 1, characterized in that, The transmission device (10) includes a transmission tube (101). A lower connecting seat (102) is fixedly installed on the outer surface of the transmission tube (101) near the top. A transmission spring (103) is snapped into the top of the lower connecting seat (102). A top plate (104) is fixedly installed on the inner ring of the transmission tube (101) near the top. A second semi-circular hole (105) is opened on the top of the top plate (104). An annular mating groove (106) is opened on the inner ring of the transmission tube (101) above the top plate (104). A transmission disc (107) is fixedly installed on the outer surface of the transmission tube (101) near the middle. A diversion chamber (107) is provided on the outer surface of the transmission tube (101) below the transmission disc (107). 08), the diversion chamber (108) is connected to the inner cavity of the transmission pipe (101), the outer surface of the diversion chamber (108) is provided with a diversion nozzle (109), the number of the diversion nozzle (109) is six, and they are distributed in a ring array; the transmission disk (107) includes a transmission gear disk (107a) and a chassis (107b), the outer radius of the chassis (107b) is larger than the outer radius of the transmission gear disk (107a); the annular mating groove (106) is sleeved with the limiting protrusion (72), the transmission spring (103) is engaged with the top of the inner cavity of the upper connecting seat (74); the top surface of the drive shaft (71) is in contact with the top surface of the top plate (104), and the first semicircular hole (73) and the second semicircular hole (105) are misaligned.

3. A horizontal milling machine according to claim 2, characterized in that, The stroke device (9) includes a fan-shaped stroke plate (91), the top of which is provided with a stroke groove (92), the stroke groove (92) slidingly engaging with the arc-shaped guide rail (85), the inner ring of which is provided with gear teeth, which mesh with the transmission gear disc (107a), and the bottom of which is provided with a stepped hole (93) located between the gear teeth and the stroke groove (92), and a telescopic device (12) is movably installed inside the stepped hole (93); the stepped hole (93) includes a through hole (93a) and a shallow hole (93b), the length of which is greater than that of the through hole (93a).

4. A horizontal milling machine according to claim 3, characterized in that, The telescopic device (12) includes a telescopic seat (121). A long rod (122) and a short rod (123) are fixedly installed on the top of the telescopic seat (121). The long rod (122) is movably installed inside the through hole (93a), and the short rod (123) is movably installed inside the shallow hole (93b). The long rod (122) extends out from the inside of the through hole (93a) and slides in cooperation with the guide groove (84). A slide rail (124) is provided on the back side of the inner side of the telescopic seat (121). A spray hole (125) is opened at one end of the top of the slide rail (124). The spray hole (125) extends through the telescopic seat (121) to the back side of the outer surface. A sliding hole is opened on the right wall of the inner side of the telescopic seat (121), and a milling device (13) is movably installed inside the sliding hole. The rear end of the spray hole (125) is connected to the diverter nozzle (109) through a pipe.

5. A horizontal milling machine according to claim 4, characterized in that, The milling device (13) includes a fixed tool holder (131), a milling cutter (132) is fixedly installed at the bottom of the fixed tool holder (131), a spring slide rod (133) is provided on the right side of the outer surface of the fixed tool holder (131), and a slide groove (134) is provided on the back of the fixed tool holder (131). The slide groove (134) slides with the slide rail (124), and the slide groove (134) initially closes the spray hole (125).

6. A horizontal milling machine according to claim 5, characterized in that, When the fan-shaped travel plate (91) moves to the position of contacting the contact boss (112), the fan-shaped travel plate (91) is located in the middle of two adjacent partition plates (83).

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