Boring machine

Abstract

The invention relates to the technical field of cutting machining, in particular to a boring machine which comprises a machine base, a boring assembly and a limiting assembly, the limiting assembly is connected to the surface of the machine base, and the boring assembly comprises a fixed base, a sliding base, a lifting base, a lifting air cylinder, a power motor and a boring cutter. The sliding seat is slidably connected to the surface, facing the limiting assembly, of the fixing seat, the lifting seat is slidably connected to the surface of the sliding seat, the lifting air cylinder is connected to the surface of the lifting seat, the power motor is connected to a piston rod of the lifting air cylinder, a motor shaft of the power motor faces the limiting assembly, and the boring cutter is connected to a motor shaft of the power motor. Through the arrangement of the fixed seat, the sliding seat, the lifting seat, the lifting air cylinder, the power motor and the boring cutter, a worker only needs to adjust the height of the boring cutter through the extension length of the piston rod of the lifting air cylinder, a workpiece does not need to be clamped or repositioned again, the coaxiality of the boring cutter when the inner walls of other coaxial holes of the workpiece are machined is guaranteed, and the machining efficiency is improved. Therefore, the machining precision of the workpiece is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cutting machining technology, and particularly to a boring machine. BACKGROUND

[0002] The boring machine is a machine tool for boring the pre-existing hole of a workpiece with a boring tool. Generally, the boring tool rotation is the main movement, and the boring tool or the workpiece movement is the feeding movement. When the boring machine is used, the workpiece is installed on the clamp of the boring machine to form a limit, and the boring tool on the boring machine bores the inner wall of the workpiece hole.

[0003] When multiple coaxial holes in the inner wall of the machine shell need to be machined, the worker needs to re-clamp the machine shell and adjust the height of the machine shell on the boring machine so that the boring tool machining end faces the inner wall of the other coaxial hole to be machined. This results in that the coaxiality of the multiple coaxial holes in the inner wall of the machine shell is affected by the hole diameter deviation caused by the re-clamping inclination or repeated positioning of the machine shell, thereby reducing the machining precision of the machine shell. SUMMARY

[0004] In order to improve the machining precision of the machine shell, the present application provides a boring machine.

[0005] The boring machine provided by the present application adopts the following technical scheme: A boring machine comprises a machine base, a boring assembly and a limiting assembly. The limiting assembly is connected to the surface of the machine base, and can clamp a workpiece to form a limit. The boring assembly comprises a fixed seat, a sliding seat, a lifting seat, a lifting cylinder, a power motor and a boring tool. The fixed seat is connected to the surface of the machine base. The sliding seat is slidingly connected to the surface of the fixed seat facing the limiting assembly. The lifting seat is slidingly connected to the surface of the sliding seat. The sliding direction of the lifting seat is perpendicular to the sliding direction of the sliding seat. The lifting cylinder is connected to the surface of the lifting seat. The piston rod axis of the lifting cylinder is perpendicular to the sliding direction of the lifting seat, and also perpendicular to the sliding direction of the sliding seat. The power motor is connected to the piston rod of the lifting cylinder. The motor axis of the power motor is parallel to the piston rod axis of the lifting cylinder. The motor axis of the power motor faces the limiting assembly. The boring tool is connected to the motor axis of the power motor. The power motor can drive the boring tool to rotate.

[0006] By adopting the above technical scheme, when the limiting assembly clamps the workpiece to form limiting, the sliding seat is pushed to slide on the surface of the fixed seat, so that the workpiece hole to be machined and the boring cutter are in the same plane, then the lifting seat is pushed to slide on the surface of the sliding seat, so that the boring cutter is located directly above the workpiece hole to be machined, the lifting cylinder piston rod is extended, the power motor and the boring cutter are driven to approach the workpiece hole to be machined, and when the boring cutter machining end abuts against the inner wall of the workpiece hole to be machined, the power motor drives the boring cutter to rotate, and the boring cutter performs boring machining on the inner wall of the workpiece hole to be machined; the height of the boring cutter can be adjusted by the extension length of the lifting cylinder piston rod, and the workpiece does not need to be clamped or positioned again, so that the coaxiality of the boring cutter when machining the inner wall of other coaxial holes of the workpiece is guaranteed, and the machining precision of the workpiece is improved.

[0007] Optionally, the limiting assembly comprises a limiting seat, a limiting ring and a limiting cylinder, the limiting seat is slidingly connected to the machine base, the sliding direction of the limiting seat and the sliding direction of the lifting seat are parallel to each other, the limiting cylinder is connected to the surface of the limiting seat facing the boring cutter, the limiting cylinder piston rod axis and the power motor motor axis are parallel to each other, the limiting ring is connected to the limiting cylinder piston rod, and the inner annular surface of the limiting ring is provided with a limiting cavity for embedding the end of the workpiece; when the workpiece is embedded between the limiting ring and the limiting seat, and the end of the workpiece faces the limiting cavity, the limiting cylinder piston rod is retracted, the limiting ring annular surface and the limiting seat surface correspondingly clamp the workpiece on both sides to form limiting, the limiting cavity inner wall abuts against the end of the workpiece to form positioning, and the workpiece hole to be machined faces the boring cutter.

[0008] By adopting the above technical scheme, the workpiece is placed between the limiting seat and the limiting ring, and the end of the workpiece faces the limiting cavity, the limiting cylinder piston rod is retracted, the limiting ring annular surface and the limiting seat surface correspondingly clamp the workpiece on both sides to form limiting, the end of the workpiece is embedded in the limiting cavity, the limiting cavity inner wall abuts against the end of the workpiece to form positioning, and the workpiece hole to be machined faces the boring cutter, so that the workpiece is not easy to deviate during the boring cutter machining process, and the machining precision of the workpiece is further improved, and the limiting seat slides on the surface of the machine base to adjust the position of the workpiece on the machine base, thereby improving the convenience of using the boring machine.

[0009] Optionally, the limiting seat comprises a sliding part and a positioning part, the sliding part is slidingly connected to the surface of the machine base, the positioning part is connected to the surface of the sliding part facing the boring cutter, the limiting cylinder is connected to the surface of the positioning part facing the boring cutter, and the surface of the positioning part facing the limiting ring is provided with a collecting cavity, the collecting cavity communicates with the inner cavity of the workpiece hole to be machined and is used for storing fine chips.

[0010] By adopting the technical scheme, when the limit ring surface and the positioning part surface one-to-one correspond to clamp the workpiece on both sides to form a limit, the collecting cavity is communicated with the inner cavity of the workpiece hole to be machined, and the fine chips generated by the boring cutter processing end boring the inner wall of the workpiece hole to be machined are affected by gravity and enter the collecting cavity, so that the fine chips are not easy to adhere to the inner wall of the hole to be machined, thereby further improving the machining precision of the workpiece.

[0011] Optionally, a plurality of communication cavities are arranged on the outer periphery surface of the positioning part at intervals, the plurality of communication cavities are all communicated with the collecting cavity, the limiting seat is connected with a collecting assembly, the collecting assembly comprises a collecting ring, a collecting rod and a plurality of collecting arc blocks, the collecting ring is coaxially sleeved on the outer periphery surface of the positioning part, the sliding direction of the collecting ring is parallel to the axis of the piston rod of the limiting cylinder, the plurality of collecting arc blocks are connected on the surface of the collecting ring facing the communication cavities at intervals, the collecting arc blocks correspond to the communication cavities one-to-one, when the collecting ring slides along the outer periphery surface of the positioning part towards the direction close to the sliding part, the inner arc surface of the collecting arc block abuts against the outer periphery surface of the positioning part and closes the communication cavity, one end of the collecting rod is connected to the surface of the collecting ring facing the limiting ring, and the other end of the collecting rod is connected to the outer periphery surface of the limiting ring.

[0012] By adopting the technical scheme, when the piston rod of the limiting cylinder is retracted, the limit ring surface and the end surface of the positioning part one-to-one correspond to clamp the workpiece on both ends to form a limit, at the same time, the limit ring drives the collecting ring to slide along the outer periphery surface of the positioning part towards the direction close to the sliding part through the collecting rod, the inner arc surface of the collecting arc block abuts against the outer periphery surface of the positioning part and closes the communication cavity, so that the fine chips in the collecting cavity are not easy to be discharged from the communication cavity, and the fine chips in the collecting cavity are concentratedly collected; when the piston rod of the limiting cylinder is extended, the limit ring surface is separated from the end surface of the workpiece, at the same time, the limit ring drives the collecting ring to slide along the outer periphery surface of the positioning part away from the sliding part through the collecting rod, and the closing effect of the collecting arc block on the communication cavity disappears, thereby facilitating the workers to concentrately clean the fine chips in the collecting cavity through the communication cavity, reducing the cleaning area of the boring machine by the workers, and improving the convenience of using the boring machine.

[0013] Optionally, the collecting assembly further comprises a spray gun, the spray gun is connected to the inner wall of the collecting cavity, and air is discharged from the air outlet end of the spray gun to impact the inner wall of the hole to be machined of the workpiece and drive the fine chips into the collecting cavity.

[0014] By adopting the technical scheme, air is discharged from the air outlet end of the spray gun to impact the inner wall of the hole to be machined of the workpiece and drive the fine chips to separate from the inner wall of the hole to be machined, and the fine chips are pushed by gravity to enter the collecting cavity, so that the fine chips are not easy to adhere to the inner wall of the hole to be machined, and the machining precision of the workpiece by the boring cutter is further improved.

[0015] Optionally, the collecting assembly further comprises a one-way valve one, a one-way valve two, a collecting piston and a reciprocating screw rod, the positioning portion is internally provided with an inflation cavity for rotation of the reciprocating screw rod, the collecting piston is threadedly connected to an outer circumferential surface of the reciprocating screw rod, the collecting piston slides along an axis of the reciprocating screw rod in an inner wall of the inflation cavity, the inner wall of the inflation cavity is provided with an air outlet flow channel, the air outlet flow channel is communicated between the inflation cavity and the air inlet end of the spray gun, the inner wall of the inflation cavity is provided with an air inlet flow channel, the air inlet flow channel is communicated between the collecting cavity and the inflation cavity, the one-way valve one is connected to the inner wall of the air inlet flow channel, the one-way valve one is used for allowing air in the air inlet flow channel to enter the inflation cavity, and the one-way valve two is connected to the inner wall of the air outlet flow channel, and the one-way valve two is used for allowing air in the air outlet flow channel to enter the air inlet end of the spray gun.

[0016] By adopting the above technical scheme, when the reciprocating screw rod rotates, the collecting piston is driven to slide back and forth along the axis of the reciprocating screw rod in the inner wall of the inflation cavity, air in the inflation cavity is pushed to enter the air outlet flow channel and then enter the air inlet end of the spray gun through the one-way valve two and then be sprayed out from the air outlet end of the spray gun and impact the inner wall of the hole to be machined, and air in the collecting cavity is pushed to enter the inflation cavity through the one-way valve one and the air inlet flow channel, directional supply and discharge of air in the inflation cavity are realized, and air in the hole to be machined of the workpiece carries the fine chips into the collecting cavity, and the collection efficiency of the fine chips is further improved.

[0017] Optionally, the collecting assembly further comprises a filter screen, the filter screen is connected to the inner wall of the air inlet flow channel close to the collecting cavity, and the filter screen can filter air and fine chips.

[0018] By adopting the above technical scheme, the filter screen can filter the fine chips in the air, so that the one-way valve one is not easily blocked by the fine chips, thereby ensuring the stability of the boring machine.

[0019] Optionally, the sliding portion is connected with a positioning motor, the motor axis of the positioning motor coincides with the axis of the reciprocating screw rod, a starting assembly is connected between the positioning motor and the reciprocating screw rod, and the starting assembly can receive power of the positioning motor and drive the reciprocating screw rod to rotate.

[0020] By adopting the above technical scheme, the positioning motor drives the reciprocating screw rod to rotate through the starting assembly, directional starting of the reciprocating screw rod is realized, wear between the reciprocating screw rod and the collecting piston is reduced, and the service life of the boring machine is improved.

[0021] Optionally, the starting assembly comprises a connecting rod, a starting ring, a starting plate, a connecting ring and at least two blocks, one of the blocks is connected to the end surface of the reciprocating wire rod towards the positioning motor, the other block is connected to the motor shaft of the positioning motor, the inner wall of the connecting ring coaxially has a connecting cavity for the block to slide, the connecting ring is coaxially sleeved on the outer surface of the block on the reciprocating wire rod, the inner ring of the starting ring is coaxially and rotatably connected to the outer surface of the connecting ring, the starting plate is connected to the surface of the collecting ring towards the starting ring, one end of the connecting rod is rotatably connected to the surface of the starting plate, the other end of the connecting rod is rotatably connected to the outer surface of the starting ring, when the inner arc surface of the collecting block abuts against the surface of the positioning part and closes the communication cavity, the connecting rod receives the power of the limiting ring and pushes the starting ring to slide towards the positioning motor, and the block on the positioning motor is embedded in the connecting cavity.

[0022] By adopting the above technical scheme, when the limiting cylinder piston rod is retracted, the limiting ring slides along the outer surface of the positioning part towards the communication cavity, the inner arc surface of the collecting block abuts against the outer surface of the positioning part and closes the communication cavity, at the same time, the connecting rod receives the power of the limiting ring and pushes the starting ring to slide towards the positioning motor, the connecting ring slides along the surface of the block on the reciprocating wire rod towards the positioning motor, the block on the positioning motor is embedded in the connecting cavity, the positioning motor is coaxially connected with the reciprocating wire rod through the connecting ring and the two blocks, and directional connection between the reciprocating wire rod and the positioning motor is realized.

[0023] Optionally, the surface of the starting plate is provided with a sliding groove for the sliding of the rotating shaft of the connecting rod.

[0024] By adopting the above technical scheme, when the limiting ring slides along the outer surface of the positioning part, the limiting ring drives the starting ring to slide through the connecting rod, the sliding groove provides a sliding space for the rotating shaft of the connecting rod, so that the connecting rod is not easily damaged by excessive stretching of the limiting ring, thereby prolonging the service life of the boring machine.

[0025] In summary, the present application has at least one of the following beneficial technical effects: 1. The fixed seat, the sliding seat, the lifting seat, the lifting cylinder, the power motor and the boring tool are arranged, the height of the boring tool can be adjusted by the extension length of the lifting cylinder piston rod, the workpiece does not need to be clamped or positioned again, the coaxiality of the boring tool when machining the inner wall of the other coaxial hole of the workpiece is guaranteed, and the machining precision of the workpiece is improved; 2. The limiting seat, the limiting ring and the limiting cylinder are arranged, the workpiece is not easy to deviate, the machining precision of the workpiece is further improved, the limiting seat slides on the surface of the machine seat, the position of the workpiece on the machine seat is adjusted, and the convenience of using the boring machine is improved; 3. The sliding part and the positioning part are arranged, the fine particles are not easy to adhere to the machining end of the boring tool, and the machining precision of the workpiece is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the overall structure schematic diagram of the embodiment of the application.

[0027] Figure 2 is the overall structure schematic diagram of the limiting seat in the embodiment of the application.

[0028] Figure 3 is the overall structure schematic diagram of the positioning part in the embodiment of the application.

[0029] Figure 4 is the partial sectional view in the embodiment of the application, mainly showing the collecting assembly.

[0030] Mark explanation: 1, machine base; 2, boring assembly; 21, fixed seat; 22, lifting seat; 23, sliding seat; 24, lifting cylinder; 25, power motor; 26, boring cutter; 3, limiting assembly; 31, limiting seat; 311, sliding part; 312, positioning part; 3121, collecting cavity; 3122, communication cavity; 3123, inflation section; 3124, inflation cavity; 3125, inlet flow channel; 3126, outlet flow channel; 32, limiting ring; 321, limiting cavity; 33, limiting cylinder; 4, collecting assembly; 41, collecting ring; 42, collecting rod; 43, spray gun; 44, one-way valve one; 45, one-way valve two; 46, collecting piston; 47, reciprocating screw rod; 48, filter screen; 49, collecting arc block; 5, positioning motor; 6, starting assembly; 61, connecting rod; 62, starting ring; 63, starting plate; 631, sliding groove; 64, connecting ring; 641, connecting cavity; 65, embedded block. DETAILED DESCRIPTION

[0031] The following will be combined with the Figures 1-4 The application is further described in detail.

[0032] The embodiment of the application discloses a boring machine. Referring to Figure 1 and Figure 2 A boring machine comprises a machine base 1, a boring assembly 2 and a limiting assembly 3, the limiting assembly 3 and the boring assembly 2 are installed on the surface of the machine base 1 at intervals, the limiting assembly 3 can clamp the surface of a workpiece to form a limit, the boring assembly 2 can sequentially perform boring machining on the inner walls of multiple coaxial holes to be machined of the workpiece, without needing to clamp or reposition the workpiece, thereby guaranteeing the coaxiality when the boring cutter 26 performs machining on the inner walls of other coaxial holes of the workpiece, and improving the machining precision of the workpiece.

[0033] Referring to Figure 1 and Figure 2The boring pin assembly includes a fixed base 21, a sliding base 23, a lifting base 22, a lifting cylinder 24, a power motor 25, and a boring tool 26. The fixed base 21 is welded and fixed to the surface of the machine base 1. The sliding base 23 is slidably connected to the surface of the fixed base 21 facing the limiting component 3, and the sliding direction of the sliding base 23 is parallel to the width direction of the machine base 1. The lifting base 22 is slidably connected to the surface of the sliding base 23 facing the limiting component 3, and the sliding direction of the lifting base 22 is parallel to the length direction of the machine base 1. The lifting cylinder... 24 is fixed to the surface of the lifting base 22 by bolts. The piston rod axis of the lifting cylinder 24 is parallel to the height direction of the base 1. The piston rod of the lifting cylinder 24 faces the limiting component 3. The power motor 25 is fixed to the piston rod of the lifting cylinder 24 by bolts. The motor axis of the power motor 25 is parallel to the height direction of the base 1. The end of the motor shaft of the power motor 25 faces the limiting component 3. The boring tool 26 is detachably installed on the motor shaft of the power motor 25. The power motor 25 can drive the boring tool 26 to rotate.

[0034] Reference Figure 1 and Figure 2 When the limiting component 3 clamps the workpiece to form a limit, the sliding seat 23 slides along the surface of the fixed seat 21 towards the limiting component 3, so that the limiting component 3 and the workpiece clamped by the limiting component 3 are on the same plane. The lifting seat 22 slides along the surface of the sliding seat 23 towards the limiting component 3. The boring tool 26 faces the hole to be machined on the workpiece. The piston rod of the lifting cylinder 24 extends, and the machining end of the boring tool 26 abuts against the inner wall of the hole to be machined. The power motor 25 drives the boring tool 26 to rotate, realizing the boring pin machining of the inner wall of the hole to be machined. When it is necessary to machine the inner wall of other coaxial holes to be machined, it is only necessary to control the extension length of the piston rod of the lifting cylinder 24. There is no need to re-clamp or reposition the workpiece, ensuring the coaxiality of the boring tool 26 when machining the inner wall of other coaxial holes of the workpiece, thereby improving the machining accuracy of the workpiece.

[0035] Reference Figure 1 and Figure 2The limiting component 3 includes a limiting seat 31, a limiting ring 32, and a limiting cylinder 33. The limiting seat 31 includes a sliding part 311 and a positioning part 312. In this embodiment, the positioning part 312 is cylindrical. One end of the sliding part 311 is slidably connected to the surface of the machine base 1. The sliding direction of the sliding part 311 is parallel to the length direction of the machine base 1. The positioning part 312 is integrally formed and fixed on the end face of the sliding part 311 facing the boring tool 26. The number of limiting cylinders 33 can be one, two, or more. In this embodiment... There are multiple limiting cylinders 33. The multiple limiting cylinders 33 are evenly fixed to the surface of the positioning part 312 facing the boring tool 26 by bolts around the axis of the positioning part 312. The piston rod axis of the limiting cylinder 33 is parallel to the height direction of the machine base 1. The piston rod of the limiting cylinder 33 faces the boring tool 26. The end of the piston rod of the multiple limiting cylinders 33 is fixed to the ring surface of the limiting ring 32. The axis of the limiting ring 32 coincides with the axis of the positioning part 312. The inner ring surface of the limiting ring 32 is provided with a limiting cavity 321 for the end of the workpiece to be inserted.

[0036] Reference Figure 1 and Figure 2 When the workpiece is embedded between the limiting ring 32 and the positioning part 312, the piston rod of the limiting cylinder 33 retracts, and the ring surface of the limiting ring 32 and the surface of the positioning part 312 clamp the two sides of the workpiece to form a limit. The end of the workpiece is embedded in the limiting cavity 321, and the inner wall of the limiting cavity 321 abuts against the end of the workpiece to form a positioning. The opening of the hole to be processed on the workpiece faces the boring tool 26, so that the inner wall of the hole to be processed on the workpiece is not easy to deviate during the boring process, thereby improving the processing accuracy of the workpiece.

[0037] Reference Figure 2 and Figure 3 The positioning part 312 has a collection cavity 3121 on its end face facing the limiting ring 32. The collection cavity 3121 is connected to the inner cavity of the hole to be machined on the workpiece and is used to store fine chips, so as to realize the centralized collection of fine chips. The outer peripheral surface of the positioning part 312 has multiple connecting cavities 3122 at intervals. All the multiple connecting cavities 3122 are connected to the collection cavity 3121. The operator can clean the fine chips in the collection cavity 3121 through the connecting cavities 3122, thereby improving the cleaning efficiency of the boring machine.

[0038] Reference Figure 3 and Figure 4The limiting seat 31 is equipped with a collecting component 4, which can push the fine chips on the inner wall of the hole to be machined in the workpiece to accumulate in the collecting cavity 3121, reducing the cleaning area of ​​the boring machine and thus improving the ease of use of the boring machine. The collecting component 4 includes a collecting ring 41, a collecting rod 42, a spray gun 43, a one-way valve 44, a one-way valve 45, a collecting piston 46, a reciprocating screw 47, a filter screen 48, and multiple collecting arc blocks 49. The inner diameter of the collecting ring 41 is equal to the outer circumferential surface of the positioning part 312. The inner ring of the collecting ring 41 is coaxially sleeved on the outer circumferential surface of the positioning part 312. The collecting ring 41 slides back and forth on the outer circumferential surface of the positioning part 312 along the axis of the positioning part 312. Multiple collecting arc blocks 49 are fixed at intervals on the surface of the collecting ring 41 facing the connecting cavity 3122. Each collecting arc block 49 corresponds to one of the connecting cavities 3122. The inner arc surface of the collecting arc block 49 can press against the outer circumferential surface of the positioning part 312 and close the connecting cavity 3122.

[0039] Reference Figure 3 and Figure 4 The two ends of the collecting rod 42 along its length are fixed to the opposite end faces of the collecting ring 41 and the limiting ring 32. When the limiting ring 32 slides towards the positioning part 312, the collecting rod 42 receives the power from the limiting ring 32 and pushes the collecting ring 41 towards the connecting cavity 3122. The inner arc surface of the collecting arc block 49 presses against the outer circumferential surface of the positioning part 312 and seals the connecting cavity 3122. When the limiting ring 32 slides away from the positioning part 312, the collecting rod 42 receives the power from the limiting ring 32 and pushes the collecting ring 41 towards the away from the connecting cavity 3122. The sealing effect of the collecting arc block 49 on the connecting cavity 3122 disappears, thus making it convenient for the operator to observe the accumulation of fine chips in the collecting cavity 3121 through the connecting cavity 3122 and clean it in time, further improving the ease of use of the boring machine.

[0040] Reference Figure 3 and Figure 4The number of spray guns 43 can be one, two, or more. In this embodiment, there are two spray guns 43. The two spray guns 43 are evenly fixed to the inner wall of the collecting cavity 3121 by bolts around the axis of the positioning part 312. The positioning part 312 has an air chamber 3124 for the reciprocating screw 47 to rotate. The axis of the reciprocating screw 47 is parallel to the width direction of the base 1. The material of the collecting piston 46 can be rubber or silicone. In this embodiment, the material of the collecting piston 46 is rubber, which has a certain deformation energy. The collecting piston 46 is threadedly connected to the reciprocating screw 47. 7. The outer peripheral surface of the collecting piston 46 is pressed against the inner wall of the inflation chamber 3124 to form a seal. The collecting piston 46 slides back and forth along the axis of the reciprocating screw 47 on the inner wall of the inflation chamber 3124. The collecting piston 46 divides the inflation chamber 3124 into two inflation sections 3123. The inflation sections 3123 correspond one-to-one with the spray gun 43. The inner wall of the inflation section 3123 is provided with an inlet air passage 3125 and an outlet air passage 3126. The inlet air passage 3125 connects the collecting chamber 3121 and the inflation section 3123. The outlet air passage 3126 connects the inflation section 3123 and the air inlet end of the spray gun 43.

[0041] Reference Figure 3 and Figure 4 The number of one-way valve 44 and one-way valve 45 can be one, two or more. In the embodiment of this application, the number of one-way valve 44 and one-way valve 45 is two. One-way valve 44 corresponds to and is connected to the air intake channel 3125. One-way valve 44 supplies air from the air intake channel 3125 into the inflation section 3123. One-way valve 45 corresponds to and is connected to the air outlet channel 3126. One-way valve 45 supplies air from the air outlet channel 3126 into the air intake end of the spray gun 43.

[0042] Reference Figure 3 and Figure 4 When the collecting piston 46 compresses the air in one of the charging sections 3123, the air in the charging section 3123 enters the air inlet of the spray gun 43 through the air outlet 3126 and the second one-way valve 45, and impacts the inner wall of the hole to be processed from the air outlet of the spray gun 43. This pushes the fine chips in the hole to be processed out, preventing the fine chips from affecting the processing end of the boring tool 26, thereby improving the processing accuracy of the workpiece. At the same time, the air pressure in the other charging end decreases, causing the air to enter the collecting chamber 3121 through the inner cavity of the hole to be processed and enter the charging chamber 3124 through the first one-way valve 44 and the air inlet 3125. At the same time, the air drives the fine chips on the inner wall of the hole to be processed into the collecting chamber 3121, further improving the collection efficiency of fine chips.

[0043] Reference Figure 3 and Figure 4The number of filters 48 can be one, two or more. In this embodiment, there are two filters 48. The filters 48 correspond one-to-one with the air intake channel 3125 and are connected to the inner wall of the air intake channel 3125 near the collection chamber 3121. The filters 48 are located on the side of the one-way valve 44 near the collection chamber 3121. The filters 48 can filter air and fine debris, making the one-way valve 44 less likely to be blocked by fine debris, thereby improving the service life of the boring machine.

[0044] Reference Figure 3 and Figure 4 The sliding part 311 is fixed with a positioning motor 5 by bolts. The motor axis of the positioning motor 5 coincides with the axis of the reciprocating lead screw 47. One end of the reciprocating lead screw 47 passes through the outer wall of the positioning part 312 and faces the end of the motor shaft of the positioning motor 5. A starting component 6 is installed between the positioning motor 5 and the reciprocating lead screw 47. The starting component 6 can receive the power of the positioning motor 5 and drive the reciprocating lead screw 47 to rotate, realize the directional start of the reciprocating lead screw 47, reduce the wear between the reciprocating lead screw 47 and the collecting piston 46, thereby extending the service life of the boring machine.

[0045] Reference Figure 3 and Figure 4 The starting assembly 6 includes a connecting rod 61, a starting ring 62, a starting plate 63, a connecting ring 64, and two inserts 65. In this embodiment, the inserts 65 are square blocks. One insert 65 is welded and fixed to the end face of the reciprocating screw 47 facing the positioning motor 5, and the other insert 65 is welded and fixed to the motor shaft of the positioning motor 5. The inner ring wall of the connecting ring 64 has a coaxially formed connecting cavity 641 for the insert 65 to slide. One end of the connecting ring 64 in the axial direction is coaxially sleeved on the outer peripheral surface of the insert 65 located on the reciprocating screw 47, and the other end of the connecting ring 64 in the axial direction faces the insert 65 located on the positioning motor 5. The connecting ring 64 can slide along the surface of the insert 65 towards the positioning motor 5. The insert 65 located on the positioning motor 5 is embedded in the connecting cavity 641. The inner wall of the connecting cavity 641 abuts against the outer peripheral surface of the insert 65 to form a limit, thereby realizing the coaxial connection between the positioning motor 5 and the reciprocating screw 47.

[0046] Reference Figure 3 and Figure 4 The inner ring of the starting ring 62 is coaxially sleeved on the outer circumference of the connecting ring 64. The connecting ring 64 rotates around its own axis on the inner wall of the starting ring 62. The starting plate 63 is welded and fixed to the surface of the collecting ring 41 facing the starting ring 62. One end of the connecting rod 61 is rotatably connected to the surface of the starting plate 63, and the other end of the connecting rod 61 is rotatably connected to the outer circumference of the starting ring 62. The surface of the starting plate 63 is provided with a sliding groove 631 for the sliding shaft of the connecting rod 61. The sliding direction of the rotating shaft of the connecting rod 61 is parallel to the height direction of the machine base 1. The sliding groove 631 provides space for the rotation of the connecting rod 61, making the connecting rod 61 less likely to break due to excessive stretching of the starting plate 63, thereby further extending the service life of the boring machine.

[0047] Reference Figure 3 and Figure 4 Figure 3 Figure 4 Figure 3 Figure 4 When the collecting ring 41 slides along the outer periphery of the positioning part 312 toward the sliding part 311, the connecting rod 61 receives the power of the collecting ring 41 and pushes the starting ring 62 to slide along the axis of the reciprocating screw 47 toward the power motor 25. The insert 65 located on the power motor 25 is embedded in the connecting cavity 641. The inner wall of the connecting cavity 641 abuts against the outer periphery of the insert 65 to form a positioning. The positioning motor 5 drives the reciprocating screw 47 to rotate around its own axis through the connecting ring 64, thereby realizing the directional start of the reciprocating screw 47.

[0048] The implementation principle of a boring machine according to an embodiment of this application is as follows: the workpiece is embedded between the limiting ring 32 and the positioning part 312, the piston rod of the limiting cylinder 33 retracts, and the ring surface of the limiting ring 32 and the surface of the positioning part 312 clamp the two sides of the workpiece to form a limit. The end of the workpiece is embedded in the limiting cavity 321, and the inner wall of the limiting cavity 321 abuts against the end of the workpiece to form a positioning. The opening of the hole to be machined on the workpiece faces the boring tool 26, so that the inner wall of the hole to be machined on the workpiece is not easy to deviate during the boring process, thereby improving the machining accuracy of the workpiece. At the same time, the sliding seat 23 slides along the surface of the fixed seat 21 towards the direction of the limiting component 3, so that the limiting component 3 and the limiting part 3 are in close proximity. The workpieces held by component 3 are on the same plane. The lifting seat 22 slides along the surface of the sliding seat 23 toward the limiting component 3. The boring tool 26 faces the hole to be machined on the workpiece. The piston rod of the lifting cylinder 24 extends, and the machining end of the boring tool 26 abuts against the inner wall of the hole to be machined. The power motor 25 drives the boring tool 26 to rotate, realizing the boring of the inner wall of the hole to be machined. When it is necessary to machine the inner wall of other coaxial holes to be machined, it is only necessary to control the extension length of the piston rod of the lifting cylinder 24. There is no need to re-clamp or reposition the workpiece, ensuring the coaxiality of the boring tool 26 when machining the inner wall of other coaxial holes of the workpiece, thereby improving the machining accuracy of the workpiece.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A boring machine characterised in that: The utility model provides a boring machine, including base (1), boring assembly (2) and limiting assembly (3), limiting assembly (3) is connected on the surface of base (1), limiting assembly (3) can hold workpiece and form limiting, boring assembly (2) includes fixed seat (21), sliding seat (23), lifting seat (22), lifting cylinder (24), power motor (25) and boring cutter (26), fixed seat (21) is connected on the surface of base (1), sliding seat (23) is slidably connected on the surface of fixed seat (21) towards limiting assembly (3), lifting seat (22) is slidably connected on the surface of sliding seat (23), the sliding direction of lifting seat (22) and the sliding direction of sliding seat (23) are perpendicular to each other, lifting cylinder (24) is connected on the surface of lifting seat (22), the piston rod axis of lifting cylinder (24) and the sliding direction of lifting seat (22) are perpendicular to each other, and the piston rod axis of lifting cylinder (24) and the sliding direction of sliding seat (23) are perpendicular to each other, power motor (25) is connected on the piston rod of lifting cylinder (24), the motor axis of power motor (25) and the piston rod axis of lifting cylinder (24) are parallel to each other, the motor axis of power motor (25) is towards limiting assembly (3), boring cutter (26) is connected on the motor axis of power motor (25), and power motor (25) can drive boring cutter (26) to rotate.

2. A boring machine according to claim 1, wherein: The limiting assembly (3) includes a limiting seat (31), a limiting ring (32), and a limiting cylinder (33). The limiting seat (31) is slidably connected to the base (1), and the sliding direction of the limiting seat (31) is parallel to the sliding direction of the lifting seat (22). The limiting cylinder (33) is connected to the surface of the limiting seat (31) facing the boring cutter (26). The piston rod axis of the limiting cylinder (33) is parallel to the motor axis of the power motor (25). The limiting ring (32) is connected to the piston rod of the limiting cylinder (33). The inner ring surface of the limiting ring (32) is provided with a limiting cavity (321) for embedding the end of the workpiece. When the workpiece is embedded between the limiting ring (32) and the limiting seat (31), and the end of the workpiece faces the limiting cavity (321), the piston rod of the limiting cylinder (33) is retracted. The ring surface of the limiting ring (32) and the surface of the limiting seat (31) correspondingly clamp the workpiece on both sides to form limiting. The inner wall of the limiting cavity (321) tightly abuts against the end of the workpiece to form positioning, and the hole to be machined of the workpiece faces the boring cutter (26).

3. A boring machine according to claim 2, wherein: The limiting seat (31) includes a sliding part (311) and a positioning part (312). The sliding part (311) is slidably connected to the surface of the base (1). The positioning part (312) is connected to the surface of the sliding part (311) facing the boring cutter (26). The limiting cylinder (33) is connected to the surface of the positioning part (312) facing the boring cutter (26). The surface of the positioning part (312) facing the limiting ring (32) is provided with a collecting cavity (3121) communicating with the inner cavity of the hole to be machined of the workpiece and storing fine chips.

4. A boring machine according to claim 3, wherein: The positioning part (312) is provided with a plurality of communication cavities (3122) spaced apart from the outer circumferential surface, and the plurality of communication cavities (3122) are all communicated with the collecting cavity (3121). The limiting seat (31) is connected with a collecting assembly (4). The collecting assembly (4) comprises a collecting ring (41), a collecting rod (42) and a plurality of collecting arc blocks (49). The collecting ring (41) is coaxially sleeved on the outer circumferential surface of the positioning part (312). The sliding direction of the collecting ring (41) and the axis of the piston rod of the limiting cylinder (33) are parallel to each other. The plurality of collecting arc blocks (49) are connected in the surface of the collecting ring (41) facing the communication cavities (3122) at intervals. The collecting arc blocks (49) correspond to the communication cavities (3122) one by one. When the collecting ring (41) slides along the outer circumferential surface of the positioning part (312) towards the direction close to the sliding part (311), the inner arc surface of the collecting arc block (49) abuts against the outer circumferential surface of the positioning part (312) and closes the communication cavity (3122). One end of the collecting rod (42) is connected to the surface of the collecting ring (41) facing the limiting ring (32). The other end of the collecting rod (42) is connected to the outer circumferential surface of the limiting ring (32).

5. A boring machine according to claim 4, wherein: The collecting assembly (4) further comprises a spray gun (43). The spray gun (43) is connected to the inner wall of the collecting cavity (3121). Air impacts the inner wall of the hole to be machined of the workpiece through the air outlet end of the spray gun (43) and drives the fine chips into the collecting cavity (3121).

6. A boring machine according to claim 5, wherein: The collecting assembly (4) further comprises a one-way valve I (44), a one-way valve II (45), a collecting piston (46) and a reciprocating screw rod (47). The positioning part (312) is provided with an inflation cavity (3124) for rotation of the reciprocating screw rod (47). The collecting piston (46) is threadedly connected to the outer circumferential surface of the reciprocating screw rod (47). The collecting piston (46) slides along the axis of the reciprocating screw rod (47) in the inner wall of the inflation cavity (3124). The inner wall of the inflation cavity (3124) is provided with an air outlet flow channel (3126). The air outlet flow channel (3126) is communicated with the inflation cavity (3124) and the air inlet end of the spray gun (43). The inner wall of the inflation cavity (3124) is provided with an air inlet flow channel (3125). The air inlet flow channel (3125) is communicated with the collecting cavity (3121) and the inflation cavity (3124). The one-way valve I (44) is connected to the inner wall of the air inlet flow channel (3125). The one-way valve I (44) allows air in the air inlet flow channel (3125) to enter the inflation cavity (3124). The one-way valve II (45) is connected to the inner wall of the air outlet flow channel (3126). The one-way valve II (45) allows air in the air outlet flow channel (3126) to enter the air inlet end of the spray gun (43).

7. A boring machine according to claim 6, wherein: The collecting assembly (4) further comprises a filter screen (48). The filter screen (48) is connected to the inner wall of the air inlet flow channel (3125) close to the collecting cavity (3121). The filter screen (48) can filter air and fine chips.

8. The boring machine of claim 6 wherein: The sliding part (311) is connected with a positioning motor (5), the motor axis of the positioning motor (5) coincides with the axis of the reciprocating screw rod (47), a starting assembly (6) is connected between the positioning motor (5) and the reciprocating screw rod (47), the starting assembly (6) can receive the power of the positioning motor (5) and drive the reciprocating screw rod (47) to rotate.

9. A boring machine according to claim 8, wherein: The starting assembly (6) comprises a connecting rod (61), a starting ring (62), a starting plate (63), a connecting ring (64) and at least two blocks (65), one of the blocks (65) is connected to the end face of the reciprocating screw rod (47) towards the positioning motor (5), the other block (65) is connected to the motor shaft of the positioning motor (5), the inner wall of the connecting ring (64) is coaxially provided with a connecting cavity (641) for the sliding of the block (65), the connecting ring (64) is coaxially sleeved on the outer peripheral surface of the block (65) on the reciprocating screw rod (47), the inner ring of the starting ring (62) is coaxially and rotatably connected to the outer peripheral surface of the connecting ring (64), the starting plate (63) is connected to the surface of the collecting ring (41) towards the starting ring (62), one end of the connecting rod (61) is rotatably connected to the plate surface of the starting plate (63), the other end of the connecting rod (61) is rotatably connected to the outer peripheral surface of the starting ring (62), when the inner arc surface of the collecting arc block (49) abuts against the surface of the positioning part (312) and closes the communication cavity (3122), the connecting rod (61) receives the power of the limiting ring (32) and pushes the starting ring (62) to slide towards the positioning motor (5), and the block (65) on the positioning motor (5) is embedded in the connecting cavity (641).

10. A boring machine according to claim 9, wherein: The plate surface of the starting plate (63) is provided with a sliding groove (631) for the sliding of the rotating shaft of the connecting rod (61).

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