Adjustable fine boring cutter for numerically controlled lathe

Abstract

The invention discloses an adjustable fine boring cutter for a numerically controlled lathe, and belongs to the field of numerically controlled lathe cutters. An adjustable fine boring cutter for a numerically controlled lathe comprises a cutter handle and a cutter head used for clamping a cutter bar, the cutter handle and the cutter head are arranged in a penetrating mode, and the adjustable fine boring cutter further comprises a fixing assembly used for clamping the cutter bar and arranged in the cutter head; the liquid storage cavity is used for releasing the cooling liquid and cooling the cutter bar in time, the liquid storage cavity is inserted into the cutter handle in a sliding mode, and the cooling liquid flows to the surface of the cutter bar in the cutter head through the liquid storage cavity; the cutting fluid can flow in the whole cutter and a cutter bar machining position, the cutter is covered with the maximum area, heat can be transmitted out in time, cutter damage is avoided, and the service life of the cutter is prolonged; the chip liquid flows to the working position of the cutter bar, the cutter is also filled with the chip liquid for a long time, the chip liquid flows uniformly, the second liquid outlet hole is prevented from being blocked by particles, and meanwhile, the flowing smoothness of the chip liquid in the liquid storage cavity is improved.

Description

Technical Field

[0001] The invention relates to the technical field of CNC lathe tools, in particular to an adjustable precision boring tool for a CNC lathe. Background Art

[0002] The alloy cutting tools used in CNC lathes generally refer to cemented carbide cutting tools, which are made of hard compounds of refractory metals and bonding metals through powder metallurgy. They have a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, and corrosion resistance. Among them, the boring tool is a kind of boring tool, which is generally round-shanked, and there are also square tool bars for larger workpieces. The most common occasions are internal hole processing, hole expansion, profiling, etc.; there are one or two cutting parts, which are specially used for rough processing, semi-finishing or finishing of existing holes; they can be used on boring machines, lathes or milling machines. The adjustable fine boring tool used on CNC lathes adjusts the size of the boring tool by adjusting the fine-tuning unit, so that different internal holes can be finished. At present, in the field of mechanical processing, the machining process is developing towards high speed and large depth. Under this development trend, more mechanical energy is converted into heat energy during the processing, which greatly increases the heat generated by the contact surface between the tool and the workpiece.

[0003] In the prior art, most machining centers are equipped with a chip fluid nozzle. However, during the machining process, the chip fluid can only cool the head of the tool bar, and the cooling effect is limited. The tool bar and the parts wrapped by the tool handle and tool head cannot be cooled, and the heat cannot be transferred out in time, resulting in tool damage. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that during the machining process of the tool, the cutting fluid can only cool the head of the tool rod, the cooling effect is limited, the tool rod and the parts wrapped by the tool handle and the tool head cannot be cooled, the heat cannot be transferred out in time, and the tool is damaged. An adjustable precision boring tool for a CNC lathe is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An adjustable fine boring tool for a CNC lathe comprises a tool handle and a tool head for clamping a tool rod, wherein the tool handle and the tool head are fixedly connected and are interpenetratingly arranged, and further comprises: a fixing assembly for clamping the tool rod, wherein the fixing assembly is arranged in the tool head; and a liquid storage chamber for storing coolant for releasing coolant to cool the tool rod in time, wherein the liquid storage chamber is slidably inserted in the tool handle, and the coolant flows through the liquid storage chamber to the surface of the tool rod in the tool head.

[0006] Preferably, the fixing assembly comprises a tool rod clamping sleeve and a circular equidistant array of clamping plates inside the tool rod clamping sleeve, one side of the clamping plate is connected to a guide bar, the guide bar and the tool rod clamping sleeve are slidably connected, and one side of the clamping plate is rotatably mounted with a screw.

[0007] In order to improve the accuracy of the concentricity of the connection between the tool rod and the tool head, further, a positioning shaft is rotatably installed in the tool rod clamping sleeve, and the positioning shaft is configured as a spline shaft for being plugged and fixed to the tool rod.

[0008] In order to tighten the connection structure between the tool rod and the tool head more tightly, a transmission assembly is further provided between the positioning shaft and the screw, and the transmission assembly includes a first bevel gear rotatably installed in the tool rod clamping sleeve, the first bevel gear and the screw are threadedly connected, one side of the first bevel gear is transmission-connected with the second bevel gear, the second bevel gear is connected in the first driving rod, one end of the first driving rod is rotatably connected to the top of the liquid storage chamber, the first driving rod is also fixedly installed with the second bevel gear at one end in the liquid storage chamber, the second driving rod is rotatably installed at the top of the liquid storage chamber, and the third bevel gear is fixedly installed at both ends of the second driving rod, the second bevel gear and the third bevel gear are meshed, the bottom of the positioning shaft is connected to the stirring shaft, and the fourth bevel gear is fixedly installed at one end of the stirring shaft, and the fourth bevel gear and the fifth bevel gear are meshed.

[0009] Preferably, the outer wall of the liquid storage chamber has positioning strips in an annular equidistant array, a spring plunger is provided at the bottom of the positioning strip, the spring plunger is elastically plugged into the inner wall of the knife handle, a gap is provided between the knife handle and the liquid storage chamber, and the inner annular array of the liquid storage chamber has second liquid outlet holes, and the second liquid outlet holes are connected to the gap.

[0010] Preferably, there are liquid storage boxes in an annular equidistant array in the liquid storage cavity, a liquid outlet pipe is slidably provided on one side of the liquid storage box, and a plug is slidably provided in the liquid outlet pipe.

[0011] In order to automatically release the cutting fluid during the processing, a centrifugal tension component is further provided at one end of the plug, and the centrifugal tension component includes a limit plate and a steel ball elastically connected to one side of the limit plate through a second spring, and the limit plate is connected to the outer wall of the liquid storage box through a first spring.

[0012] In order to ensure the timely and continuous release of the cutting fluid, further, the liquid storage chamber is provided with a pressure assembly, and the pressure assembly includes a magnetic ring slidably connected to the liquid storage chamber, and a membrane cloth is provided inside the magnetic ring.

[0013] In order to prevent the cutting fluid from producing sticky residue on the inner wall of the liquid storage chamber, further, the bottom end of the positioning shaft extends into the liquid storage chamber, and the bottom end of the positioning shaft is fixedly connected to a stirring shaft, one end of the stirring shaft is provided with a blade, and the blade is configured as a magnetic plate, the inner wall of the liquid storage chamber is symmetrically and elastically connected with an electromagnet, and the electromagnet, blade and magnetic ring are matched and configured.

[0014] Preferably, the inner wall of the liquid storage chamber is symmetrically provided with slide grooves, the outer ring of the magnetic ring and the slide groove are matched, two groups of fixed blocks are fixedly connected in the slide groove, the fixed blocks are connected to ear plates through a third spring, and an electromagnet is rotatably installed between the two groups of ear plates.

[0015] Compared with the prior art, the present invention provides an adjustable fine boring tool for a CNC lathe, which has the following beneficial effects: 1. The adjustable fine boring tool for the CNC lathe is provided with a liquid storage chamber and a liquid storage box. The chip liquid in the liquid storage box flows out of the liquid storage box through centrifugal action and then enters the liquid storage chamber until it flows to the tool bar processing position. The chip liquid can flow inside the entire tool and the tool bar processing position, covering the tool with the largest area, and the heat can be transferred out in time, thereby avoiding tool damage and extending the tool life; 2. The adjustable fine boring tool for the CNC lathe is provided with an electromagnet, a magnetic ring and a membrane cloth, and uses the principle of electromagnetic like poles repelling each other to exert pressure in the liquid storage chamber, so that the chip liquid is squeezed to the outside of the liquid storage chamber, flows to the working position of the tool bar through the cavity of the tool handle and the tool head, and the inside of the tool is also filled with chip liquid for a long time; 3. The adjustable precision boring tool for the CNC lathe has a blade fixedly connected to the bottom end of the stirring shaft. As the positioning shaft rotates, the blade is driven to rotate in the liquid storage chamber. The stirring effect is utilized in the liquid storage chamber to make the chip liquid flow evenly, thereby preventing particles from clogging the second liquid outlet and, at the same time, increasing the smooth flow of the chip liquid in the liquid storage chamber.

[0016] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The cutting fluid in the present invention can flow inside the entire tool and the tool bar processing position, covering the tool with the maximum area, and the heat can be transferred out in time to avoid tool damage and extend the service life of the tool; the cutting fluid flows to the tool bar working position, and the inside of the tool is also filled with cutting fluid for a long time. The cutting fluid flows evenly to avoid particulate matter from clogging the second liquid outlet. At the same time, the flow of cutting fluid in the liquid storage chamber is smooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional structural schematic diagram of an adjustable fine boring tool for a CNC lathe proposed by the present invention; Figure 2 A schematic cross-sectional view of an adjustable fine boring tool for a CNC lathe proposed by the present invention; Figure 3 This is a schematic diagram of the structure of a fixing assembly of an adjustable fine boring tool for a CNC lathe proposed by the present invention; Figure 4 A schematic diagram of the bottom driving structure of a tool bar clamping sleeve of an adjustable fine boring tool for a CNC lathe proposed by the present invention; Figure 5 A schematic cross-sectional view of a liquid storage chamber of an adjustable fine boring tool for a CNC lathe proposed by the present invention; Figure 6 This is a schematic diagram of the structure of a pressure assembly of an adjustable fine boring tool for a CNC lathe proposed by the present invention; Figure 7 The present invention is a schematic diagram of the electromagnet installation structure of an adjustable fine boring tool for a CNC lathe.

[0018] In the figure: 1, knife handle; 2, knife head; 3, first liquid outlet; 4, liquid storage chamber; 5, positioning strip; 6, knife rod clamping sleeve; 7, clamping plate; 8, positioning shaft; 9, guide strip; 10, first bevel gear; 11, second bevel gear; 12, first drive rod; 13, third bevel gear; 14, second drive rod; 15, fourth bevel gear; 16, fifth bevel gear; 17, liquid storage box; 18, limit plate; 19, second liquid outlet; 20, liquid outlet pipe; 21, screw; 22, first spring; 23, second spring; 24, steel ball; 25, spring plunger; 26, stirring shaft; 27, blade; 28, electromagnet; 29, slideway; 30, magnetic ring; 31, membrane cloth; 32, ear plate; 33, fixing block; 34, third spring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example

[0021] Reference Figure 1-Figure 7 An adjustable precision boring tool for a CNC lathe comprises a tool handle 1 and a tool head 2 for clamping a tool rod, wherein the tool handle 1 and the tool head 2 are fixedly connected and are arranged through-and-through.

[0022] In this embodiment, a tool handle 1 and a tool head 2 that penetrate each other are provided to fix the tool rod and the rotating part connection of the tool platform of the CNC lathe.

[0023] The present invention also includes a fixing assembly for clamping the tool bar, the fixing assembly is arranged in the tool head 2, and the fixing assembly includes a tool bar clamping sleeve 6 and a clamping plate 7 in an annular equidistant array in the tool bar clamping sleeve 6, a guide bar 9 is connected to one side of the clamping plate 7, the guide bar 9 is slidably connected to the tool bar clamping sleeve 6, and a screw 21 is rotatably installed on one side of the clamping plate 7; In this embodiment, three groups of clamps 7 for clamping the tool rod are provided in the cutter head 2. The clamps 7 slide in the tool rod clamping sleeve 6 through the guide strip 9 to clamp the tool rod. The tool rod is used to process parts. The movement of the clamps 7 is driven by the reciprocating movement of the screw 21.

[0024] A positioning shaft 8 is rotatably installed in the tool bar clamping sleeve 6. The positioning shaft 8 is configured as a spline shaft for being plugged and fixed to the tool bar.

[0025] In this embodiment, a positioning shaft 8 is arranged in the tool rod clamping sleeve 6, and an electromagnetic coupling matching the positioning shaft 8 is arranged in the tool rod. The electromagnetic coupling is used to connect the positioning shaft 8 and the tool rod. During the rotation of the tool rod, the positioning shaft 8 is driven to rotate, thereby driving the clamping plate 7 to move centrally, thereby clamping the tool rod to ensure the stability of the processing tool.

[0026] It should be noted that an electromagnetic coupling is provided between the positioning shaft 8 and the tool rod. When the clamping plate 7 stably clamps the positioning shaft 8, the positioning shaft 8 continues to rotate and the fixing assembly is locked.

[0027] A transmission assembly is arranged between the positioning shaft 8 and the screw rod 21, and the transmission assembly includes a first bevel gear 10 rotatably installed in the tool rod clamping sleeve 6, the first bevel gear 10 and the screw rod 21 are threadedly connected, one side of the first bevel gear 10 is transmission-connected with the second bevel gear 11, the second bevel gear 11 is connected with the first driving rod 12, one end of the first driving rod 12 is rotatably connected to the top of the liquid storage chamber 4, the first driving rod 12 is located in the liquid storage chamber 4 and the second bevel gear 11 is also fixedly installed at one end, the second driving rod 14 is rotatably installed at the top of the liquid storage chamber 4, the second driving rod 14 is fixedly installed at both ends with the third bevel gear 13, the second bevel gear 11 and the third bevel gear 13 are meshed, the bottom of the positioning shaft 8 is connected with a stirring shaft 26, one end of the stirring shaft 26 is fixedly installed with a fourth bevel gear 15, and the fourth bevel gear 15 and the fifth bevel gear 16 are meshed.

[0028] Specifically, in this embodiment, the knife bar is locked and the positioning shaft 8 is rotated, so that the clamping plate 7 can be driven by the transmission assembly to clamp the knife bar.

[0029] When the positioning shaft 8 and the electromagnetic coupling in the tool rod are slidably plugged in, the tool rotates to drive the positioning shaft 8 to rotate, and then drives the fourth bevel gear 15 at the bottom end of the positioning shaft 8 to rotate, drives the third bevel gear 13 to rotate, and drives the second drive rod 14 to rotate. After the third bevel gear 13 and the second bevel gear 11 at the other end of the second drive rod 14 are meshed, the first drive rod 12 is driven to rotate, and the third bevel gear 13 and the second bevel gear 11 at the top of the first drive rod 12 are meshed. The second bevel gear 11 drives the first drive rod 12 to rotate, and the first drive rod 12 drives the first bevel gear 10 to rotate. The first bevel gear 10 and the screw rod 21 are threadedly connected. Therefore, the rotation of the first bevel gear 10 can enable the screw rod 21 to drive the clamping plate 7 to slide in the tool rod clamping sleeve 6, thereby clamping the tool rod, and thus clamping and rotating with the tool as a whole.

[0030] The present embodiment also includes a liquid storage chamber 4 for storing coolant for releasing the coolant to timely cool the tool rod. The liquid storage chamber 4 is slidably inserted in the tool handle 1. The coolant flows through the liquid storage chamber 4 to the surface of the tool rod in the tool head 2. The outer wall of the liquid storage chamber 4 has positioning strips 5 in an annular equidistant array. A spring plunger 25 is provided at the bottom of the positioning strip 5. The spring plunger 25 is elastically inserted into the inner wall of the tool handle 1.

[0031] A liquid storage chamber 4 is provided in the tool handle 1. The hollow structure in the liquid storage chamber 4 can provide storage and diversion functions for the cutting fluid. During installation, the liquid storage chamber 4 is directly slid into the tool handle 1. A spring plunger 25 is provided at the bottom of the liquid storage chamber 4 and at the bottom end of the positioning strip 5. When the liquid storage chamber 4 moves to the installation position, the spring plunger 25 and the tool handle 1 are engaged to complete the installation, thereby ensuring the stability of the overall structure of the tool.

[0032] In this embodiment, three groups of liquid storage boxes 17 are arranged in the liquid storage chamber 4, and the liquid storage boxes 17 are filled with cutting liquid. During the rotation process, the cutting liquid in the liquid storage box 17 flows out of the liquid storage box 17 through centrifugal action and enters the liquid storage chamber 4, and then flows out through the second liquid outlet 19 until it flows to the tool rod processing position. The cutting liquid can flow inside the entire tool and the tool rod processing position, covering the tool with the maximum area, and the heat can be transferred out in time to avoid tool damage and extend the tool life.

[0033] A gap is provided between the shank 1 and the liquid storage chamber 4. The liquid storage chamber 4 has a second liquid outlet hole 19 in an annular array. The second liquid outlet hole 19 is connected to the gap.

[0034] It should be noted that a first liquid outlet hole (3) is provided on the side wall of the cutter head (2) to enlarge the liquid outlet channel of the cutting liquid and ensure the maximum range of cooling effect of the maximum cutting liquid outflow.

[0035] In this embodiment, since the cutting fluid needs to fill the entire tool cavity and the tool rod working position, a second liquid outlet 19 is opened on the side wall of the liquid storage cavity 4, which cooperates with the gap between the liquid storage cavity 4 and the tool handle 1 to ensure that the cutting fluid cools the tool in time.

[0036] A centrifugal tension component is provided at one end of the plug, and the centrifugal tension component includes a limit plate 18 and a steel ball 24 elastically connected to one side of the limit plate 18 through a second spring 23 . The limit plate 18 is connected to the outer wall of the liquid storage box 17 through a first spring 22 .

[0037] Specifically, during the rotation of the tool, the centrifugal force is used to drive the steel ball 24 to swing, and the steel ball 24 uses the second spring 23 to pull the limit plate 18 and the liquid outlet pipe 20 on one side of the limit plate 18. A plug is connected to one side of the limit plate 18. When the steel ball 24 is swung by the centrifugal force, the limit plate 18 is pulled, thereby pulling the plug out, so that the liquid outlet pipe 20 opens, thereby releasing the cutting liquid.

[0038] The liquid storage chamber 4 is provided with a pressure assembly, which includes a magnetic ring 30 slidably connected to the liquid storage chamber 4 , and a membrane cloth 31 is provided inside the magnetic ring 30 .

[0039] In this embodiment, a pressure component is provided, and the magnetic ring 30 that moves up and down and the membrane cloth 31 inside the magnetic ring 30 reciprocate in the liquid storage chamber 4 to squeeze the air in the liquid storage chamber 4, providing further assistance for the centrifugal action, increasing the flow rate of the cutting fluid, and thereby cooling the tool more timely.

[0040] The bottom end of the positioning shaft 8 extends into the liquid storage chamber 4, and the bottom end of the positioning shaft 8 is fixedly connected to a stirring shaft 26, one end of the stirring shaft 26 is provided with a blade 27, and the blade 27 is configured as a magnetic plate. The inner wall of the liquid storage chamber 4 is symmetrically and elastically connected with an electromagnet 28, and the electromagnet 28, blade 27 and magnetic ring 30 are matched and configured.

[0041] A blade 27 is fixedly connected to the bottom end of the stirring shaft 26. As the positioning shaft 8 rotates, the blade 27 is driven to rotate in the liquid storage chamber 4. The stirring effect is utilized in the liquid storage chamber 4 to make the cutting liquid flow evenly, thereby preventing particulate matter from clogging the second liquid outlet 19. At the same time, the smooth flow of the cutting liquid in the liquid storage chamber 4 is increased.

[0042] The inner wall of the liquid storage chamber 4 is symmetrically provided with a slide groove 29, the outer ring of the magnetic ring 30 is matched with the slide groove 29, two groups of fixed blocks 33 are fixedly connected in the slide groove 29, the fixed block 33 is connected to the ear plate 32 through the third spring 34, and the electromagnet 28 is rotatably installed between the two groups of ear plates 32.

[0043] In this embodiment, two groups of electromagnets 28 are arranged in the liquid storage chamber 4, and the blade 27 is arranged as a magnetic attraction plate. Behind the electromagnet 28, the blade 27 touches the electromagnet 28 during rotation. During the touching process, the electromagnet 28 is energized with positive electricity, and the magnetic ring 30 has its own positive electricity. Therefore, whenever the blade 27 rotates and touches the electromagnet 28, the electromagnet 28 can be triggered to be charged, so that the magnetic ring 30 drives the membrane cloth 31 in the magnetic ring 30 to move up and down in the liquid storage chamber 4, squeezes the air in the liquid storage chamber 4, and uses pressure to squeeze the cutting liquid to the outside of the liquid storage chamber 4, and flows to the working position of the tool rod through the cavity of the tool handle 1 and the tool head 2, and the inside of the tool is also filled with cutting liquid for a long time.

[0044] It should be noted that the electromagnet 28 is connected to the inner wall of the liquid storage chamber 4 via the third spring 34 to avoid collision between the electromagnet 28 and the blade 27 when they come into contact.

[0045] In the present invention, a tool handle 1 and a tool head 2 are provided to fix the tool rod and connect with the rotating part of the tool table of the CNC lathe. When the CNC lathe is working, the rotating part rotates, driving the tool to rotate and process the workpiece; An electromagnetic coupling matching the positioning shaft 8 is arranged in the tool bar, and the positioning shaft 8 and the tool bar are connected by the electromagnetic coupling. When the tool bar rotates, the positioning shaft 8 is driven to rotate, thereby driving the clamping plate 7 to move centrally; Specifically, the positioning shaft 8 rotates, which in turn drives the fourth bevel gear 15 at the bottom end of the positioning shaft 8 to rotate, which in turn drives the third bevel gear 13, the second drive rod 14, the second bevel gear 11 and the first drive rod 12 to rotate. The first bevel gear 10 is threadedly connected to the screw rod 21, so the rotation of the first bevel gear 10 can make the screw rod 21 drive the clamping plate 7 to slide in the tool bar clamping sleeve 6, thereby clamping the tool bar, thereby clamping and rotating the tool as a whole, thereby clamping the tool bar to ensure the stability of the processing tool; The present invention is provided with a liquid storage chamber 4 for storing coolant for releasing coolant to cool the tool bar in time. Three groups of liquid storage boxes 17 are arranged in the liquid storage chamber 4. The liquid storage boxes 17 are filled with chip liquid. During the rotation process, the chip liquid in the liquid storage box 17 flows out of the liquid storage box 17 through centrifugal action and then enters the liquid storage chamber 4, and then flows out through the second liquid outlet 19 until it flows to the tool bar processing position. The chip liquid can flow inside the entire tool and the tool bar processing position, covering the tool with the largest area, and the heat can be transferred out in time to avoid tool damage and extend the tool life. Specifically, during the rotation of the tool, the steel ball 24 is driven to swing by centrifugal force, and the steel ball 24 uses the second spring 23 to pull the limit plate 18 and the liquid outlet pipe 20 on one side of the limit plate 18. A plug is connected to one side of the limit plate 18. When the steel ball 24 is swung by centrifugal force, the limit plate 18 is pulled, thereby pulling the plug away, so that the liquid outlet pipe 20 is opened, thereby releasing the chip liquid. Two groups of electromagnets 28 are arranged in the liquid storage chamber 4. The electromagnets 28 are energized with positive electricity. The magnetic ring 30 is positively charged. The electromagnet 28 is triggered to be charged, so that the magnetic ring 30 drives the membrane cloth 31 in the magnetic ring 30 to move up and down in the liquid storage chamber 4, squeezes the air in the liquid storage chamber 4, and uses pressure to squeeze the chip liquid to the outside of the liquid storage chamber 4, and flows to the working position of the tool rod through the cavity of the tool handle 1 and the tool head 2, and the tool is filled with chip liquid for a long time. At the same time, a blade 27 is fixedly connected to the bottom end of the stirring shaft 26. As the positioning shaft 8 rotates, the blade 27 is driven to rotate in the liquid storage chamber 4. The stirring effect is utilized in the liquid storage chamber 4 to make the chip liquid flow evenly, thereby preventing particulate matter from clogging the second liquid outlet 19. At the same time, the flow of the chip liquid in the liquid storage chamber 4 is increased smoothly.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An adjustable fine boring tool for a CNC lathe, comprising a tool handle (1) and a tool head (2) for clamping a tool rod, wherein the tool handle (1) and the tool head (2) are fixedly connected and the tool handle (1) and the tool head (2) are arranged through each other, and a first liquid outlet (3) is provided on a side wall of the tool head (2), characterized in that: Also includes: A fixing assembly for clamping the cutter rod, the fixing assembly being arranged in the cutter head (2); A liquid storage chamber (4) for storing coolant for releasing the coolant to timely cool the tool rod, wherein the liquid storage chamber (4) is slidably inserted into the tool handle (1), and the coolant flows through the liquid storage chamber (4) to the surface of the tool rod in the tool head (2).

2. The adjustable fine boring tool for a CNC lathe according to claim 1, characterized in that: The fixing assembly comprises a tool bar clamping sleeve (6) and a clamping plate (7) in an annular equidistant array inside the tool bar clamping sleeve (6); a guide bar (9) is connected to one side of the clamping plate (7); the guide bar (9) and the tool bar clamping sleeve (6) are slidably connected; and a screw rod (21) is rotatably mounted on one side of the clamping plate (7).

3. The adjustable fine boring tool for a CNC lathe according to claim 2, characterized in that: A positioning shaft (8) is rotatably mounted in the tool bar clamping sleeve (6); the positioning shaft (8) is configured as a spline shaft and is used for being plugged and fixed to the tool bar.

4. The adjustable fine boring tool for a CNC lathe according to claim 3, characterized in that: A transmission assembly is provided between the positioning shaft (8) and the screw rod (21), the transmission assembly comprising a first bevel gear (10) rotatably mounted in the tool bar clamping sleeve (6), the first bevel gear (10) and the screw rod (21) being threadedly connected, one side of the first bevel gear (10) being transmission-connected to a second bevel gear (11), the second bevel gear (11) being connected to a first driving rod (12), one end of the first driving rod (12) being rotationally connected to the top of the liquid storage chamber (4), the first driving rod (12) being located A second bevel gear (11) is also fixedly mounted at one end of the liquid storage chamber (4); a second drive rod (14) is rotatably mounted at the top of the liquid storage chamber (4); third bevel gears (13) are fixedly mounted at both ends of the second drive rod (14); the second bevel gear (11) and the third bevel gear (13) are meshed; a stirring shaft (26) is connected to the bottom of the positioning shaft (8); a fourth bevel gear (15) is fixedly mounted at one end of the stirring shaft (26); the fourth bevel gear (15) and the fifth bevel gear (16) are meshed.

5. The adjustable fine boring tool for a CNC lathe according to claim 1, characterized in that: The outer wall of the liquid storage chamber (4) has positioning strips (5) in an annular array at equal intervals, a spring plunger (25) is provided at the bottom of the positioning strip (5), the spring plunger (25) is elastically plugged into the inner wall of the knife handle (1), a gap is provided between the knife handle (1) and the liquid storage chamber (4), the inner annular array of the liquid storage chamber (4) has second liquid outlet holes (19), and the second liquid outlet holes (19) are connected to the gap.

6. The adjustable fine boring tool for a CNC lathe according to claim 1, characterized in that: The liquid storage chamber (4) has liquid storage boxes (17) arranged in an annular equidistant array, a liquid outlet pipe (20) is slidably provided on one side of the liquid storage box (17), and a plug is slidably provided inside the liquid outlet pipe (20).

7. The adjustable fine boring tool for a CNC lathe according to claim 6, characterized in that: A centrifugal tension component is provided at one end of the plug, the centrifugal tension component comprising a limit plate (18) and a steel ball (24) elastically connected to one side of the limit plate (18) via a second spring (23), and the limit plate (18) is connected to the outer wall of the liquid storage box (17) via a first spring (22).

8. The adjustable fine boring tool for a CNC lathe according to claim 3, characterized in that: The liquid storage chamber (4) is provided with a pressure assembly, the pressure assembly comprising a magnetic ring (30) slidably connected to the liquid storage chamber (4), and a membrane cloth (31) is provided in the magnetic ring (30).

9. The adjustable fine boring tool for a CNC lathe according to claim 8, characterized in that: The bottom end of the positioning shaft (8) extends into the liquid storage chamber (4), and the bottom end of the positioning shaft (8) is fixedly connected to a stirring shaft (26), one end of the stirring shaft (26) is provided with a blade (27), and the blade (27) is configured as a magnetic plate. The inner wall of the liquid storage chamber (4) is symmetrically and elastically connected to an electromagnet (28), and the electromagnet (28), the blade (27) and the magnetic ring (30) are matched and arranged.

10. The adjustable fine boring tool for a CNC lathe according to claim 9, characterized in that: The inner wall of the liquid storage chamber (4) is symmetrically provided with a slide groove (29); the outer ring of the magnetic ring (30) and the slide groove (29) are matched; two groups of fixed blocks (33) are fixedly connected in the slide groove (29); the fixed blocks (33) are connected to ear plates (32) via third springs (34); and an electromagnet (28) is rotatably installed between the two groups of ear plates (32).

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