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CN-121973020-A - Machining cutting tool cooling device based on low-temperature liquid internal cooling

CN121973020ACN 121973020 ACN121973020 ACN 121973020ACN-121973020-A

Abstract

The invention relates to the field of cutter machining, and discloses a machining cutting tool cooling device based on low-temperature liquid internal cooling, which comprises a cutter body, a connecting piece arranged at the end part of the cutter body and a guide-in block movably connected with the cutter body, wherein the guide-in block is provided with a first liquid through hole and a second liquid through hole, the first liquid through hole is communicated with a liquid guide cavity, the first liquid through hole is used for being connected with a liquid conveying pipe, the inner wall of the cutter body is provided with a liquid through channel, the liquid through channel is communicated with the liquid guide cavity when the cutter body is connected with the first liquid through the connecting piece, and in operation, low-temperature liquid can enter the liquid through channel of the inner wall of the cutter body after entering the liquid guide cavity through the liquid conveying pipe, and the low-temperature liquid can enable the inner wall of the cutter body to extend to the whole cutter for cooling.

Inventors

  • XU DONGDONG
  • LI JINYAO
  • XU GUILIN

Assignees

  • 同济大学
  • 航天科工空天动力研究院(苏州)有限责任公司

Dates

Publication Date
20260505
Application Date
20260204

Claims (10)

  1. 1. A cooling device for a machining cutting tool based on low-temperature liquid internal cooling is characterized by comprising, The cutter comprises a cutter body (1), a connecting piece (2) arranged at the end part of the cutter body (1) and an introduction block (3) movably connected with the cutter body (1); The guide-in block (3) is provided with a first liquid through hole (31) and a second liquid through hole (32), and the first liquid through hole (31) and the second liquid through hole (32) are communicated through a liquid guide cavity (33); The first liquid through hole (31) is used for being connected with the infusion tube (103); The inner wall of the cutter body (1) is provided with a liquid passage (11), and when the cutter body (1) is connected with the first liquid passage hole (31) through the connecting piece (2), the liquid passage (11) is communicated with the liquid guide cavity (33); During operation, low-temperature liquid can enter the liquid guide cavity (33) through the liquid guide channel (11) on the inner wall of the cutter body (1), and the inner wall of the cutter body (1) is enabled to extend to the whole cutter for cooling through the low-temperature liquid.
  2. 2. The cooling device for a machining cutting tool based on cooling in a low-temperature liquid according to claim 1, wherein the introduction block (3) comprises a horizontal section (34) and an axial section (35) arranged at the end part of the horizontal section (34), the first liquid through hole (31) is arranged at the top end of the horizontal section (34), and the second liquid through hole (32) simultaneously penetrates through the first liquid through hole (31) and the second liquid through hole (32) along the axial extension line direction.
  3. 3. The cooling device for a machining cutting tool based on cooling in a cryogenic liquid according to claim 2, wherein the liquid guiding cavity (33) comprises a first cavity (331) and a second cavity (332), the first cavity (331) is simultaneously communicated with the first liquid through hole (31) and the second cavity (332), and the second cavity (332) is arranged around the outer wall of the second liquid through hole (32).
  4. 4. The cooling device for a machining cutting tool based on internal cooling of a cryogenic liquid according to claim 3, wherein an outer wall of the second cavity (332) is in communication with an inlet end of a guide pipe (4), and an outlet end of the guide pipe (4) is in communication with the second liquid through hole (32); the outlet end of the guide pipe (4) is positioned on the inner wall of the axial section (35) of the guide block (3).
  5. 5. The cooling device for a machining cutting tool based on cryogenic liquid internal cooling according to claim 4, characterized in that a flow sensor (5) is arranged around the outer wall of the axial section (35) of the lead-in block (3), the flow sensor (5) being adapted to detect the flow of liquid in the inner wall of the guide pipe (4).
  6. 6. The cooling device for a machining cutting tool based on cooling in low-temperature liquid according to claim 5, wherein the second liquid through hole (32) is inserted with a tool shank (6), and two ends of the tool shank (6) extending out of the second liquid through hole (32) are respectively a first end and a second end.
  7. 7. The cooling device for a machining cutting tool based on internal cooling of a cryogenic liquid according to claim 6, characterized in that the inner wall of the port of the second end is provided with a collet (7), the port of the second end fixing the collet (7) to the inner wall of the second end by screwing with a nut (8); The collet (7) is used for clamping the end part of the cutter body (1).
  8. 8. The cooling device for a machining cutting tool based on low-temperature liquid internal cooling according to claim 7, wherein a liquid through cavity (63) is formed in the inner wall of the tool holder (6), at least one group of liquid through holes (64) are formed in the tool holder (6), and the liquid through cavity (63) is communicated with the liquid through holes (64).
  9. 9. The cooling device for a machining cutting tool based on the internal cooling of a cryogenic liquid according to claim 8, wherein when the tool shank (6) is inserted into the second liquid through hole (32), a third cavity (333) is formed around a clearance space between the peripheral edge of the outer wall of the tool shank (6) and the peripheral edge of the inner wall of the second liquid through hole (32); The liquid guide through hole (64) is positioned in the third cavity (333); When in use, the liquid flowing out of the outlet end of the guide pipeline (4) flows into the liquid passage (11) through the third cavity (333), the liquid guide through hole (64), the liquid passing cavity (63) and the inner wall of the collet (7) in sequence.
  10. 10. The cooling device for the machining cutting tool based on low-temperature liquid internal cooling according to claim 8 or 9, wherein the liquid inlet end of the liquid passage (11) is arranged at the top end of the tool body (1), and the liquid outlet end of the liquid passage (11) is uniformly distributed on the outer wall of the tail end of the tool body (1) around the central shaft of the tool body (1).

Description

Machining cutting tool cooling device based on low-temperature liquid internal cooling Technical Field The invention relates to the field of cutter machining, in particular to a machining cutting cutter cooling device based on low-temperature liquid internal cooling. Background Milling is the core process of metal cutting. The process realizes the accurate removal of workpiece materials through the relative movement of the rotary multi-edge tool and the workpiece, and can finish the processing of various complex geometric features such as planes, curved surfaces, threads, gears and the like. During the processing, a large amount of heat is generated by plastic deformation and frictional heat generation of the material, the propagation path of the heat in a process system is complex and dynamically changed, and local high-temperature hot spots can be formed due to factors such as heat conductivity coefficient. The process system generates an uneven temperature field after being heated, and causes complex thermal deformation, which can have adverse effects on machining precision, cutter performance, surface integrity and the like. In addition, the high temperature during processing can lead to the severe abrasion of the cutter, the traditional cooling mode comprises wet cooling, micro lubrication and the like, and the current advanced cooling technology has great progress compared with the traditional cooling mode, but the problems of poor permeability efficiency, thermal fatigue effect, poor environmental compatibility and the like still exist. Disclosure of Invention Therefore, the technical problem to be solved by the invention is that the high temperature during processing can lead to the severe abrasion of the cutter. The technical scheme is that the processing cutting tool cooling device based on low-temperature liquid internal cooling comprises a tool body, a connecting piece arranged at the end part of the tool body and a guide block movably connected with the tool body, wherein the guide block is provided with a first liquid through hole and a second liquid through hole, the first liquid through hole is communicated with a liquid guide cavity, the first liquid through hole is used for being connected with a liquid conveying pipe, a liquid through channel is arranged on the inner wall of the tool body, when the tool body is connected with the first liquid through hole through the connecting piece, the liquid through channel is communicated with the liquid guide cavity, and when the processing cutting tool cooling device is in operation, low-temperature liquid can enter the liquid through channel on the inner wall of the tool body through the liquid conveying pipe after entering the liquid guide cavity, and the low-temperature liquid can enable the inner wall of the tool body to extend to the whole tool to be cooled through the low-temperature liquid. In a preferred mode of the cooling device for the machining cutting tool based on low-temperature liquid internal cooling, the guide-in block comprises a horizontal section and an axial section arranged at the end part of the horizontal section, the first liquid through hole is arranged at the top end of the horizontal section, and the second liquid through hole simultaneously penetrates through the first liquid through hole and the second liquid through hole along the axial extension line direction. In a preferred mode of the cooling device for the machining cutting tool based on the low-temperature liquid internal cooling, the liquid guide cavity comprises a first cavity and a second cavity, the first cavity is communicated with the first liquid through hole and the second cavity at the same time, and the second cavity is arranged around the outer wall of the second liquid through hole. In a preferred mode of the machining cutting tool cooling device based on the low-temperature liquid internal cooling, the outer wall of the second cavity is communicated with the inlet end of the guide pipeline, the outlet end of the guide pipeline is communicated with the second through hole, and the outlet end of the guide pipeline is located on the inner wall of the axial section of the guide block. In a preferred mode of the cooling device for the machining cutting tool based on the internal cooling of the cryogenic liquid, a flow sensor is arranged around the outer wall of the axial section of the guide block, and the flow sensor is used for detecting the flow rate of the liquid in the inner wall of the guide pipeline. In the preferred mode of the cooling device for the machining cutting tool based on the low-temperature liquid internal cooling, the second liquid through hole is inserted with the tool handle, and the two ends of the tool handle extending out of the second liquid through hole are respectively a first end and a second end. In a preferred mode of the cooling device for the machining cutting tool based on the cooling in the low-temperature liquid, a co