A PCD reamer for deep hole machining

Abstract

The utility model relates to the technical field of PCD reamer, and specifically to a PCD reamer for processing deep holes, comprising a handle and a working part, wherein the working part is installed at the lower end of the handle, and the handle can continuously discharge liquid to the working part through a sliding ring on a handle rod during the rotation of the reamer, and when the reamer squeezes the workpiece, the reamer will move vertically, and the vertically moving reamer, under the action of a limit block in a limit cylinder, drives a working rod in the working part to move vertically, and the vertically moving working rod drives a rotating plate to rotate horizontally, and the horizontally rotating rotating plate drives a partition to rotate outward, and the partition that rotates outward is used to clear the flow of liquid.

Description

Technical Field

[0001] The utility model relates to the technical field of PCD reamer, in particular to a PCD reamer used for processing deep holes. Background Art

[0002] PCD reamers are made by sintering specially treated diamonds with a small amount of binder under high temperature and ultra-high pressure conditions. They exhibit uniform extremely high hardness and excellent wear resistance, with a hardness value of up to 8000HV, which far exceeds the performance of general alloy materials. PCD reamers also have excellent heat resistance, high thermal conductivity and low friction coefficient, which can significantly reduce cutting forces during the cutting process, thereby improving machining accuracy. With the continuous development of technology and the increase in market demand, the performance and application range of PCD reamers are continuously improving and expanding, and are expected to make greater contributions to the progress of modern manufacturing.

[0003] The reamer generates a lot of heat during high-speed rotation and cutting, especially when machining deep holes. If it is not cooled in time, the temperature of the reamer will rise rapidly. High temperature will reduce the hardness and strength of the reamer, which will reduce the cutting performance, increase the cutting force, and may even cause the reamer to break. Under high temperature conditions, the cutting edge is prone to wear, which will blunt the cutting edge, increase the cutting force, and reduce the cutting quality. The reamer will also transfer heat to the workpiece during the cutting process. If the workpiece cannot dissipate heat effectively, its temperature will rise and may cause thermal deformation. Therefore, if proper cooling is not performed during the drilling process, it will seriously affect the cutting performance, cutting quality, workpiece accuracy and equipment safety. In order to avoid these problems, effective cooling measures must be taken, such as using cutting fluids and appropriately reducing cutting speeds to ensure that the processing process can proceed smoothly.

[0004] In view of the above situation, in order to overcome the above technical problems, the utility model designs a PCD reamer for processing deep holes, which solves the above technical problems. Utility Model Content

[0005] The utility model aims to provide a PCD reamer for machining deep holes, which can continuously discharge liquid to the working part through the sliding ring on the handle rod during the rotation of the reamer. This design can ensure that the working part of the PCD reamer is continuously cooled when machining deep holes, thereby avoiding tool wear and reduced machining accuracy caused by high temperature. When the reamer squeezes the workpiece, it will move vertically.

[0006] In order to achieve the above technical objectives, the utility model provides the following technical solutions:

[0007] The utility model provides a PCD reamer for processing deep holes, comprising a handle and a working part, wherein the working part is installed at the lower end of the handle, and the handle can continuously discharge liquid to the working part through a sliding ring on a handle rod during the rotation of the reamer, and when the reamer squeezes the workpiece, the reamer will move vertically, and the vertically moving reamer is acted upon by a limiting block in a limiting cylinder, thereby driving a working rod in the working part to move vertically, and the vertically moving working rod drives a rotating plate to rotate horizontally, and the horizontally rotating rotating plate drives a partition to rotate outward, and the partition that rotates outward is used to facilitate the flow of liquid.

[0008] Preferably, the handle can continuously discharge liquid to the working part during the rotation of the reamer through the sliding ring on the handle rod. This design can ensure that the working part of the PCD reamer is continuously cooled when processing deep holes, thereby avoiding tool wear and reduced processing accuracy caused by high temperature. When the reamer squeezes the workpiece, it moves vertically. During this process, under the action of the limit block in the limit cylinder, the working rod in the working part will move vertically and drive the rotating plate to rotate horizontally. This automatic adjustment function can ensure that during the processing, the reamer can adaptively adjust according to the actual situation and maintain a stable processing state. The horizontally rotating rotating plate will drive the partition to rotate outward, thereby unblocking the flow of liquid. This design helps to ensure that the cooling liquid can evenly and effectively cover the working part, improve the cooling effect, and prevent processing problems caused by poor liquid flow.

[0009] The handle portion includes a handle rod, a sliding ring, a water inlet, a water inlet groove, a limiting cylinder, a limiting block and a telescopic tube. The handle rod is installed above the working portion, a sliding ring is installed on the side of the handle rod, a ring groove is provided inside the sliding ring, a water inlet is installed on the outer side of the sliding ring, a water inlet groove is provided inside the handle portion, and the cross-sectional shape of the water inlet groove is T-shaped. The lower end of the handle rod is fixedly installed with a limiting cylinder, and the internal array of the limiting cylinder is fixedly installed with a limiting block, and the center of the limiting cylinder is installed with a telescopic tube.

[0010] Preferably, an annular groove is provided inside the sliding ring to help the sliding ring not rotate when the handle rotates, so that liquid can continue to enter the water inlet, preventing the handle from being unable to continuously supply liquid to the water storage tank inside the working part when rotating, and the continuously provided liquid helps to cool the reamer, preventing the reamer from overheating during drilling, which will cause deformation of the reamer and thus damage the reamer; the T-shaped water inlet groove helps to concentrate the liquid inside the sliding ring into the telescopic tube, so that the interior can be continuously and stably supplied with liquid; the limit blocks of the array on the periphery of the limit cylinder help to allow the working part to move vertically while preventing the working part from shaking and deflecting when rotating.

[0011] The working part includes a working rod, a sealing disk, an extrusion spring, a water storage tank, a fan-shaped groove and a connecting pipe. The working rod is installed inside the limiting cylinder. The upper array of the working rod is provided with a sliding groove, and the sliding groove corresponds to the position of the limiting block. A sealing disk is installed above the working rod. The center of the sealing disk is provided with a hole for connecting to the telescopic tube. The center position of the sealing disk is clamped with an extrusion spring, and the other end of the extrusion spring is clamped in the limiting cylinder. A water storage tank is provided above the working rod, and the water storage tank is located directly below the sealing disk. The side of the water storage tank is connected to a fan-shaped groove, and the lower end of the fan-shaped groove is connected to a connecting pipe.

[0012] Preferably, the position of the sliding groove corresponds to that of the limit block, which helps the working rod to move only vertically when extruding the workpiece. The working rod that does not move vertically is attached to a restoring spring on the sealing disk, which not only has a shock-absorbing effect but also limits the vertical movement of the working rod; when the reamer extrude the workpiece, the extrusion spring in the center of the sealing disk can play a buffering role, and the extrusion spring can restore the working rod to its initial position when not squeezed, thereby preventing the internal parts of the reamer from sliding automatically during transportation; the water tank is located at the lower end of the sealing disk, which helps the water tank to be sealed and avoids liquid splashing inside the water tank, which causes corrosion of the parts inside the reamer and damage to the internal parts, thereby increasing the maintenance cost; the design of the fan-shaped groove on the side of the water tank allows the partition above the water tank to rotate around a point, so that the liquid can flow from the water tank to the inside of the connecting pipe, thereby cooling the processing rod.

[0013] The side array of the sealing disk is provided with an L-groove, a fixing rod is fixedly installed on the L-groove, and a rotating plate is installed on the fixing rod.

[0014] Preferably, the L-groove design on the side of the sealing disk can prevent the rotating plate from being blocked by the sealing disk during rotation, which helps the rotating plate to rotate freely, and the L-groove can provide an extrusion point for the restoring spring to prevent the rotating plate from being unable to return to its original position during rotation, thereby causing the internal parts to fail to be automated.

[0015] The cross-section of the rotating plate is V-shaped, and the upper end of the V-shaped rotating plate is arc-shaped. A restoring spring is clamped on the rotating plate below the fixing rod, and the other end of the restoring spring is clamped on the outer side of the sealing disk.

[0016] Preferably, the V-shaped and arc-shaped design of the rotating plate can help the working rod to squeeze the rotating plate and reduce the friction of the rotating plate on the sealing cylinder when it moves vertically. At the same time, the V-shaped rotating plate can prevent the other end from squeezing the partition when it rotates, so that the partition itself can rotate freely under the action of centrifugal force, so that the liquid can provide a cooling effect on the reamer; the design of the restoring spring can enable the rotating plate to provide squeezing force on the partition, so that the partition will not open when the reamer starts to rotate, which will cause the liquid inside the water tank to splash, thereby wasting liquid and causing the internal liquid to splash onto the staff.

[0017] A limiting rod is installed on the fan-shaped groove, a rotating cylinder is installed on the limiting rod, limiting grooves are provided at both ends of the rotating cylinder, a mainspring is installed inside the limiting groove, a spacer is installed at both ends of the mainspring, and a spacer is fixedly installed on the side of the rotating cylinder.

[0018] Preferably, there are limit grooves at both ends of the rotating cylinder, wherein there is a spring inside the limit groove, so that the rotating cylinder can be more stable during the rotation process, and is designed as a spring, so that the rotating cylinder can be restored to its original state without being subjected to centrifugal force, and when the reamer breaks through the workpiece, the extrusion plate will provide an extrusion force toward the center to the partition when there is no extrusion pressure, thereby sealing the water tank with the partition, thereby avoiding splashing caused by liquid flowing out of the water tank.

[0019] The cross-sectional shape of the partition is L-shaped, and the cross-sectional shape of the upper end of the partition is fan-shaped.

[0020] Preferably, the L-shaped and fan-shaped design of the partition helps to drive the partition to rotate when the rotating cylinder rotates, so that the partition and the fan-shaped groove can be completely sealed, which helps prevent liquid from entering the interior of the sealing cylinder, which can protect the internal parts from being corroded by the liquid and thus protect the internal parts.

[0021] A spiral cooling pipe is installed at the lower end of the connecting pipe, and a delivery pipe is connected to the lower end of the cooling pipe. A downwardly inclined water outlet pipe is installed on the side of the delivery pipe.

[0022] Preferably, the cooling tube is spirally shaped, which increases the contact area of ​​the cooling tube with the working rod and allows the liquid inside the cooling tube to cool the working rod; the outlet pipe is designed to be inclined, which can prevent debris from entering the pipe. At the same time, the inclined design can also provide a downward flow force for the liquid, so that the liquid can cool the reamer head, thereby protecting the reamer. The flow of liquid can prevent the splashing of debris and help make the drilling smoother.

[0023] The beneficial effects of the utility model are as follows:

[0024] 1. The ring groove inside the sliding ring can prevent the sliding ring from rotating when the handle rotates, thereby ensuring that the water inlet can continuously enter the liquid, avoiding the failure of the handle to continuously supply liquid to the water storage tank inside the working part. The continuous supply of liquid helps to cool the reamer, preventing the reamer from deforming due to excessive temperature during the drilling process, thereby extending the service life of the reamer.

[0025] 2 The function of the spring is to provide additional stability when the rotating drum rotates and to help the rotating drum return to its initial position after the centrifugal force disappears. When the reamer breaks through the workpiece and is not subjected to extrusion force, the extrusion plate will exert an extrusion force toward the center on the partition, prompting the partition to tightly close the water tank, thereby effectively preventing liquid from overflowing from the water tank and reducing splashing.

[0026] 3. The cooling pipe adopts a spiral design, which increases the contact area between the cooling pipe and the working rod, thereby improving the cooling efficiency and enabling the liquid in the cooling pipe to cool the working rod more effectively. The outlet pipe is designed in an inclined manner, which can prevent debris from entering the pipe and provide downward flow force, so that the liquid can directly cool the reamer head, thereby protecting the reamer from overheating damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an overall schematic diagram of the utility model;

[0028] Figure 2 It is a cross-sectional view of the handle of the utility model;

[0029] Figure 3 This is a schematic diagram of the interior of the limit cylinder of the utility model;

[0030] Figure 4 It is a schematic diagram of the working part of the utility model;

[0031] Figure 5 It is a schematic diagram of the rotating drum of the utility model;

[0032] Figure 6 It is a top view of the working part of the utility model;

[0033] Figure 7 It is a schematic diagram of the connecting pipe of the utility model.

[0034] In the figure: 1. handle; 11. handle rod; 12. sliding ring; 121. ring groove; 13. water inlet; 14. water inlet groove; 15. limit cylinder; 16. limit block; 17. telescopic tube; 2. working part; 21. working rod; 211. sliding groove; 22. sealing disk; 221. L groove; 222. fixing rod; 223. rotating plate; 224. restoring spring; 23. extrusion spring; 24. water storage tank; 25. fan-shaped groove; 251. limit rod; 252. rotating cylinder; 253. limit groove; 254. spring; 255. spacer; 256. spacer; 26. connecting pipe; 261. cooling pipe; 262. delivery pipe; 263. water outlet pipe. DETAILED DESCRIPTION

[0035] The following will describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. The embodiments described below are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0036] See also Figures 1 to 7 The utility model provides a PCD reamer for processing deep holes, comprising a handle 1 and a working part 2, wherein the working part 2 is installed at the lower end of the handle 1, and the handle 1 can continuously discharge liquid to the working part 2 during the rotation of the reamer through a sliding ring 12 on a handle rod 11, and when the reamer squeezes the workpiece, the reamer will move vertically, and the vertically moving reamer is acted upon by a limit block 16 in a limit cylinder 15, driving a working rod 21 in the working part 2 to move vertically, and the vertically moving working rod 21 drives a rotating plate 223 to rotate horizontally, and the horizontally rotating rotating plate 223 drives a partition 256 to rotate outward, and the partition 256 that rotates outward is used to facilitate the flow of liquid.

[0037] The handle 1 can continuously discharge liquid to the working part 2 during the rotation of the reamer through the sliding ring 12 on the handle rod 11. This design can ensure that the working part 2 of the PCD reamer is continuously cooled when processing deep holes, thereby avoiding tool wear and reduced processing accuracy caused by high temperature. When the reamer squeezes the workpiece, it will move vertically. During this process, under the action of the limit block 16 in the limit cylinder 15, the working rod 21 in the working part 2 will move vertically and drive the rotating plate 223 to rotate horizontally. This automatic adjustment function can ensure that during the processing, the reamer can adaptively adjust according to the actual situation and maintain a stable processing state. The horizontally rotating rotating plate 223 will drive the partition 256 to rotate outward, thereby unblocking the flow of liquid. This design helps to ensure that the cooling liquid can evenly and effectively cover the working part 2, improve the cooling effect, and prevent processing problems caused by poor liquid flow.

[0038] like Figure 1 and 2 As shown, the handle 1 includes a handle rod 11, a sliding ring 12, a water inlet 13, a water inlet groove 14, a limiting cylinder 15, a limiting block 16 and a telescopic tube 17. The handle rod 11 is installed on the top of the working part 2, and the sliding ring 12 is installed on the side of the handle rod 11. The sliding ring 12 is provided with an annular groove 121 inside, and the water inlet 13 is installed on the outer side of the sliding ring 12. The handle 1 is provided with a water inlet groove 14, and the cross-sectional shape of the water inlet groove 14 is T-shaped. The limiting cylinder 15 is fixedly installed at the lower end of the handle rod 11, and the limiting block 16 is fixedly installed in the internal array of the limiting cylinder 15. The telescopic tube 17 is installed in the center of the limiting cylinder 15.

[0039] The annular groove 121 provided inside the sliding ring 12 can prevent the sliding ring 12 from rotating when the handle 1 rotates, thereby ensuring that the water inlet 13 can continuously enter the liquid, and avoiding the inability to continuously supply liquid to the water storage tank 24 inside the working part 2 due to the rotation of the handle 1. The continuously supplied liquid helps to cool the reamer and prevent the reamer from deforming due to excessive temperature during the drilling process, thereby extending the service life of the reamer. The T-shaped water inlet groove 14 design can centrally transport the liquid inside the sliding ring 12 to the telescopic tube 17, so that the working part 2 can be stably provided with coolant to ensure the smooth progress of the processing process. The array limit blocks 16 on the periphery of the limit cylinder 15 can ensure that the working part 2 moves vertically while preventing the working part 2 from shaking and deflecting when rotating. This design improves the stability of the reamer during the processing process and further ensures the processing accuracy and efficiency.

[0040] like Figure 2 and 3 As shown, the working part 2 includes a working rod 21, a sealing disk 22, an extrusion spring 23, a water storage tank 24, a fan-shaped groove 25 and a connecting pipe 26. The working rod 21 is installed inside the limiting cylinder 15. The upper array of the working rod 21 is provided with a sliding groove 211, and the sliding groove 211 corresponds to the position of the limiting block 16. A sealing disk 22 is installed above the working rod 21. The center of the sealing disk 22 is provided with a hole for connecting to the telescopic tube 17. The center position of the sealing disk 22 is clamped with an extrusion spring 23, and the other end of the extrusion spring 23 is clamped inside the limiting cylinder 15. A water storage tank 24 is provided above the working rod 21, and the water storage tank 24 is located directly below the sealing disk 22. The side of the water storage tank 24 is connected with a fan-shaped groove 25, and the lower end of the fan-shaped groove 25 is connected with a connecting pipe 26.

[0041] The sliding groove 211 corresponds to the position of the limit block 16, ensuring that the working rod 21 can only move vertically when squeezing the workpiece. When the working rod 21 is subjected to vertical pressure, it moves in the sliding groove 211, and when it reaches a certain position, it is supported by the recovery spring 224, which not only has a shock-absorbing effect, but also limits the vertical movement range of the working rod 21. When the reamer squeezes the workpiece, the squeezing spring 23 in the center of the sealing disk 22 plays a buffering role, reducing the impact during the processing. At the same time, when not squeezed, the elastic force of the squeezing spring 23 can restore the working rod 21 to its initial position, avoiding unexpected movement of the internal parts of the reamer during transportation. The water storage tank 24 is located directly below the sealing disk 22. This design helps to maintain the sealing state of the water storage tank 24, prevent the liquid in the water storage tank 24 from splashing, and avoid corrosion and damage to the internal parts of the reamer caused by liquid leakage or splashing, thereby reducing maintenance costs. A fan-shaped groove 25 is provided on the side of the water storage tank 24. This design allows the partition 256 above the water storage tank 24 to rotate around a fixed point. When the partition 256 rotates, it allows liquid to flow from the water storage tank 24 to the inside of the connecting pipe 26, ensuring that the coolant can reach the processing rod portion that needs cooling, thereby maintaining the cooling effect of the reamer during the processing.

[0042] like Figure 3 and 4 As shown, the side array of the sealing disk 22 is provided with an L-groove 221 , a fixing rod 222 is fixedly mounted on the L-groove 221 , and a rotating plate 223 is mounted on the fixing rod 222 .

[0043] The L-shaped groove 221 on the side of the sealing disk 22 allows the rotating plate 223 to pass smoothly during the rotation process without being hindered by the sealing disk 22, thereby ensuring the free rotation of the rotating plate 223. At the same time, the L-shaped groove also provides a pressing point for the restoring spring 224, thereby ensuring that the rotating plate 223 can smoothly return to the initial position after the rotation. This design avoids the situation where the internal parts of the reamer cannot work properly due to the inability to properly reset the rotating plate 223, thereby ensuring the automation of the reamer operation.

[0044] like Figure 4 As shown, the cross-sectional shape of the rotating plate 223 is V-shaped, and the upper end of the V-shaped rotating plate 223 is arc-shaped. A return spring 224 is clamped on the rotating plate 223 below the fixing rod 222, and the other end of the return spring 224 is clamped on the outer side of the sealing disk 22.

[0045] The V-shaped and arc-shaped design of the rotating plate 223 helps the working rod 21 to squeeze the rotating plate 223 when it moves vertically, reducing the friction of the rotating plate 223 on the sealing cylinder. At the same time, the V-shaped rotating plate 223 can prevent the other end from squeezing the partition 256 when it rotates, so that the partition 256 itself can rotate freely under the action of centrifugal force, so that the liquid can provide a cooling effect for the reamer; the design of the restoring spring 224 can enable the rotating plate 223 to provide squeezing force on the partition 256, so that the partition 256 will not open when the reamer starts to rotate, which will cause the liquid inside the water tank 24 to splash, thereby wasting liquid and causing the internal liquid to splash onto the staff.

[0046] like Figure 4 and 5 As shown, a limiting rod 251 is installed on the fan-shaped groove 25, and a rotating cylinder 252 is installed on the limiting rod 251. Limiting grooves 253 are provided at both ends of the rotating cylinder 252. A mainspring 254 is installed inside the limiting groove 253. Spacer cylinders 255 are installed at both ends of the mainspring 254. A partition plate 256 is fixedly installed on the side of the rotating cylinder 252.

[0047] Limiting grooves 253 are provided at both ends of the rotating cylinder 252, and springs 254 are installed inside these limiting grooves 253. The function of the springs 254 is to provide additional stability when the rotating cylinder 252 rotates, and to help the rotating cylinder 252 return to its initial position after the centrifugal force disappears. When the reamer breaks through the workpiece and is not subjected to the squeezing force, the squeezing plate will exert a squeezing force toward the center on the partition 256, prompting the partition 256 to tightly close the water storage tank 24, thereby effectively preventing the liquid from overflowing from the water storage tank 24 and reducing splashing.

[0048] like Figure 5 As shown, the cross-sectional shape of the partition 256 is L-shaped, and the cross-sectional shape of the upper end of the partition 256 is fan-shaped.

[0049] The partition 256 is L-shaped and fan-shaped, which enables the partition 256 to rotate smoothly under the drive of the rotating cylinder 252. When the partition 256 rotates, it closely matches the fan-shaped groove 25 to form a sealed environment, effectively preventing liquid from entering the interior of the sealing cylinder. This design protects the parts inside the sealing cylinder from being eroded by the liquid, thereby extending the service life of the parts.

[0050] like Figure 6 and 7 As shown, a spiral cooling pipe 261 is installed at the lower end of the connecting pipe 26 , and a delivery pipe 262 is connected to the lower end of the cooling pipe 261 . A downwardly inclined water outlet pipe 263 is installed on the side of the delivery pipe 262 .

[0051] The cooling pipe 261 adopts a spiral design, which increases the contact area between the cooling pipe 261 and the working rod 21, thereby improving the cooling efficiency, so that the liquid in the cooling pipe 261 can cool the working rod 21 more effectively. The water outlet pipe 263 is designed in an inclined manner, which can not only prevent debris from entering the pipe, but also provide downward flow force, so that the liquid can directly cool the reamer head, thereby protecting the reamer from overheating damage. The flow of liquid can also prevent debris from splashing, which helps to make the drilling process smoother and obtain a smoother drilling effect.

[0052] During the working process of the utility model, when a worker is ready to drill a hole in a workpiece, liquid is introduced into the sliding ring 12 from the water inlet 13, and the connection between the ring groove 121 and the water tank 14 is passed, and the internal liquid is introduced into the water storage tank 24 through the telescopic tube 17. Since the reamer rotates at a high speed, the rotating rods around the water storage tank 24 are driven to perform centrifugal motion, thereby driving the rotating rods to rotate forward. However, due to the restrictions of the rotating plate 223 and the restoring spring 224 on the sealing disk 22, the partition 256 is blocked, so that the partition 256 on the rotating rod cannot rotate outward. When the reamer squeezes the workpiece, the working rod 21 slides upward, and the upward sliding working rod 21 The sealing disk 22 will be driven to move upward, and the sealing disk 22 will drive the rotating plate 223 to squeeze the inside of the sealing cylinder during the upward movement, so that the squeezed rotating plate 223 will rotate, and the other end of the rotating plate 223 will tilt upward under the action of the lever, so as not to restrict the partition 256 on the rotating rod, so the partition 256 will move outward, and the outward moving partition 256 will make the water in the water storage tank 24 flow to the connecting pipe 26, and the liquid inside the connecting pipe 26 will enter the cooling pipe 261, and then flow from the cooling pipe 261 to the delivery pipe 262, and then the liquid inside the delivery pipe 262 will flow out from the upper pipe, thereby cooling the reamer.

[0053] The embodiments of the present invention have been shown and described. It will be apparent to those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PCD reamer for machining deep holes, comprising a shank (1) and a working portion (2), characterized in that: A working part (2) is mounted at the lower end of the handle (1). The handle (1) can continuously discharge liquid from the working part (2) through a sliding ring (12) on the handle rod (11) during the rotation of the reamer. When the reamer squeezes the workpiece, the reamer moves vertically. The vertically moving reamer is acted upon by a limit block (16) in a limit cylinder (15), thereby driving a working rod (21) in the working part (2) to move vertically. The vertically moving working rod (21) drives the rotating plate (223) to rotate horizontally. The horizontally rotating rotating plate (223) drives the partition plate (256) to rotate outward. The partition plate (256) that rotates outward is used to facilitate the flow of liquid.

2. A PCD reamer for deep hole machining according to claim 1, characterized in that: The handle (1) comprises a handle rod (11), a sliding ring (12), a water inlet (13), a water inlet groove (14), a limiting cylinder (15), a limiting block (16) and a telescopic tube (17); the handle rod (11) is mounted above the working part (2); the sliding ring (12) is mounted on the side of the handle rod (11); a ring groove (121) is provided inside the sliding ring (12); the water inlet (13) is mounted on the outside of the sliding ring (12); the handle (1) is provided inside the water inlet groove (14); the cross-sectional shape of the water inlet groove (14) is T-shaped; the limiting cylinder (15) is fixedly mounted on the lower end of the handle rod (11); the limiting block (16) is fixedly mounted inside the limiting cylinder (15); and the telescopic tube (17) is mounted at the center of the limiting cylinder (15).

3. A PCD reamer for deep hole machining according to claim 2, characterized in that: The working part (2) comprises a working rod (21), a sealing disk (22), an extrusion spring (23), a water storage tank (24), a fan-shaped groove (25) and a connecting pipe (26); the working rod (21) is installed inside the limiting cylinder (15); a sliding groove (211) is provided on the upper surface of the working rod (21), and the sliding groove (211) corresponds to the position of the limiting block (16); a sealing disk (22) is installed above the working rod (21); the sealing disk (22) has a central portion. A hole for connecting with the telescopic tube (17) is opened at the center of the sealing disk (22); a compression spring (23) is clamped at the center position of the sealing disk (22); the other end of the compression spring (23) is clamped inside the limiting cylinder (15); a water storage tank (24) is opened above the working rod (21); and the water storage tank (24) is located directly below the sealing disk (22); a fan-shaped groove (25) is connected to the side of the water storage tank (24); and a connecting tube (26) is connected to the lower end of the fan-shaped groove (25).

4. A PCD reamer for machining deep holes according to claim 3, characterized in that: The sealing disk (22) is provided with an L-groove array on the side thereof, a fixing rod (222) is fixedly mounted on the L-groove (221), and a rotating plate (223) is mounted on the fixing rod (222).

5. A PCD reamer for deep hole machining according to claim 4, characterized in that: The cross-section of the rotating plate (223) is V-shaped, and the upper end of the V-shaped rotating plate (223) is arc-shaped. A restoring spring (224) is clamped on the rotating plate (223) below the fixing rod (222), and the other end of the restoring spring (224) is clamped on the outer side of the sealing disk (22).

6. A PCD reamer for machining deep holes according to claim 5, characterized in that: A limit rod (251) is mounted on the fan-shaped groove (25), a rotating cylinder (252) is mounted on the limit rod (251), limit grooves (253) are provided at both ends of the rotating cylinder (252), a mainspring (254) is mounted inside the limit groove (253), a spacer cylinder (255) is mounted at both ends of the mainspring (254), and a spacer plate (256) is fixedly mounted on the side of the rotating cylinder (252).

7. A PCD reamer for machining deep holes according to claim 6, characterized in that: The cross-sectional shape of the partition (256) is L-shaped, and the cross-sectional shape of the upper end of the partition (256) is fan-shaped.

8. A PCD reamer for machining deep holes according to claim 7, characterized in that: A spiral cooling pipe (261) is installed at the lower end of the connecting pipe (26), and a delivery pipe (262) is connected to the lower end of the cooling pipe (261). A downwardly inclined water outlet pipe (263) is installed on the side of the delivery pipe (262).

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