A turret tool rest

Abstract

The present invention provides a turret tool rest, which belongs to the technical field of machine tools. It solves the problems of insufficient reliability in the use of existing turret tool rests. The turret tool rest comprises a base body, a rotatable turret body is mounted on the base body, a tool clamp assembly is fixed on the turret body, the tool clamp assembly has a tool handle hole, an air inlet channel is provided in the base body, the air inlet channel comprises an air inlet inlet one that can be connected to an air source and an air inlet outlet one toward the turret body, an air outlet channel connected to the tool handle hole is provided in the tool clamp assembly, an air passage channel is provided in the turret body, the air passage channel comprises an air outlet one connected to the air outlet channel and an air inlet one toward the base body, and rotating the turret body can make the air inlet one and the air inlet outlet one docked and connected or staggered and separated. The turret tool rest improves the reliability of use.

Description

Technical Field

[0001] The present invention belongs to the technical field of machine tools and relates to a turret tool rest. Background Art

[0002] With the complication of workpiece machining, turret tool rests that can mount multiple tools are widely used in machine tools. The turret tool rest includes a rotatable turret, and multiple tools are fixed on the circumference of the turret. During the machining process of the machine tool, tool switching is achieved by rotating the turret. However, the number of tools installed on the turret tool rest is limited. When the number of tools required for machining a workpiece is greater than the number of tools fixed on the turret tool rest, it is necessary to change the machine for machining or change the tool for machining. Changing the machine for machining requires multiple machine tools to be equipped, and after changing the machine tool, the workpiece needs to be repositioned and installed, which will not only affect the machining quality but also the machining efficiency. When changing the tool for machining, it is necessary to stop the machine to manually change the tool, which will also affect the machining efficiency.

[0003] Chinese patent literature has publicly proposed a vertical turret lathe [Application No.: CN 201010157594.9; Publication No.: CN 101850427A], which includes a turret tool rest located in the machining area and an automatic tool changer located outside the machining area. A tool holder is installed on the tool mounting portion of the turret tool rest, and the automatic tool changer can automatically change tools relative to the tool holder. A tool holder unit is installed in the tool holder. The tool holder unit has a tool shank hole opposite to the tool shank. A pair of jaws capable of moving axially is installed in the tool shank hole. This pair of jaws is connected to a piston, and a pair of hydraulic ports is provided on the tool holder unit with the piston clamped. A pair of pins that can be mechanically operated is also provided on the tool holder. The automatic tool changer includes a tool magazine and a pair of working cylinders that alternately press the pins of the tool holder. By pressing one of the pins, hydraulic oil is supplied to one of the hydraulic ports, and the jaws and the piston retreat together to clamp the tool shank of the tool inserted into the tool shank hole. By pressing the other pin, hydraulic oil is supplied to the other hydraulic port, and the piston and the jaws advance to loosen the tool shank.

[0004] In the above turret lathe, in order to avoid interference of the tools on the tool holder with the machining of adjacent tools, the tools on the tool holder are removed and temporarily stored in the tool magazine. At this time, the tool shank hole is exposed. When other tools on the turret tool rest are performing cutting machining, chips and oil mist are likely to enter the tool shank hole, causing chips to adhere to the hole wall surface of the tool shank hole and the jaws. When the tool shank of the tool is reinserted into the tool shank hole for fixation, the chips will cause the tool to be unable to be accurately positioned, resulting in an increase in the tool installation position error, affecting the machining quality of the product, and even causing the tool to be unable to be fixed in the tool holder and unable to complete the machining operation. Therefore, the turret tool rest in the above lathe is prone to failure and has insufficient reliability in use. Summary of the Invention

[0005] The purpose of the present invention is to solve the above problems in the prior art and propose a turret tool holder to solve the technical problem that the prior turret tool holder has insufficient reliability in use.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A turret tool holder comprises a base body, on which a rotatable turret body is mounted, on which a tool clamp assembly is fixed, and on which a tool handle hole is provided. The invention is characterized in that an air inlet passage is provided in the base body, the air inlet passage comprises an air inlet inlet one connected to an air source and an air inlet outlet one facing the turret body, an air outlet passage connected to the tool handle hole is provided in the tool clamp assembly, an air passage is provided in the turret body, the air passage comprises an air outlet one connected to the air outlet passage and an air inlet one facing the base body, and rotating the turret body can make the air inlet one and the air inlet outlet one docked and connected or staggered and separated.

[0008] When the turret tool rest is used, the air inlet 1 is connected to the air source through an external air inlet pipe. The turret body is rotated, and when the air inlet 1 is connected to the air inlet outlet 1, the air passage is connected to the air inlet passage, and the air inlet passage, the air passage and the air outlet passage form an air blowing path, and the air source can blow air to the tool handle hole through this air blowing path, so that under the action of the air flow, the chips and oil in the tool handle hole can be blown away, so that the hole wall of the tool handle hole is kept clean, so that the tool is accurately positioned in the tool handle hole, the probability of failure is reduced, and the reliability of the use of the turret tool rest is improved.

[0009] It is generally believed that maintaining a continuous connected state of the air path is a guarantee of reliability. Although the turret body and the base body will rotate relative to each other, causing the air inlet channel and the air passage to be staggered and separated, so that the air blowing air path is not maintained in a continuous connected state, this arrangement in the turret tool holder can ensure the reliability of use; because the air inlet channel that can be connected to the air source is arranged in the base body, the base body will not rotate, thus avoiding the distortion of the external air inlet pipe, ensuring that the external air inlet pipe remains unobstructed, and reducing the occurrence of malfunctions; at the same time, the air passage is arranged in the turret body, and the turret body will rotate, so that the turret body can only be in one circumferential position. The arrangement enables the air passage to be connected with the air inlet passage. After the turret body position when the air passage and the air inlet passage are connected is set to the tool change position, air blowing is avoided when the tool is not changed, which affects the stability of the tool fixed in the tool clamp, thereby ensuring the reliability of the turret tool holder. Moreover, the air inlet passage, the air passage and the air outlet passage are respectively arranged in the base body, the turret body and the tool clamp assembly, so that this air blowing air path is protected inside the turret tool holder and isolated from the external environment, avoiding external impurities from entering the air blowing air path and causing blockage, ensuring the effectiveness of air blowing to remove chips, and ensuring the reliability of the turret tool holder.

[0010] In the above turret tool rest, an installation groove is formed on the base body, an insertion part is provided on the turret body, the insertion part is inserted into the installation groove, the first air inlet and outlet is arranged on the bottom surface of the installation groove, and the first air passing inlet is arranged on the inner end surface of the insertion part.

[0011] During the rotation of the turret body, the insertion part is always located within the installation groove, and the first air inlet and outlet and the first air passing inlet are protected within the installation groove, reducing the entry of external impurities and blocking of the air inlet passage and the air passing passage, thus ensuring the reliable use of the turret tool rest.

[0012] In the above turret tool rest, a dust-proof ring and a fitting ring are arranged between the base body and the turret body. The fitting ring is fixed on the turret body and surrounds the outside of the insertion part. The dust-proof ring is fixed on the base body. An annular embedding groove is formed on the dust-proof ring, and the fitting ring is embedded into the embedding groove.

[0013] The dust-proof ring and the fitting ring have a dust-proof function, reducing the possibility of external impurities entering between the base body and the turret body and blocking the air inlet passage and the air passing passage, thus ensuring the reliable use of the turret tool rest.

[0014] In the above turret tool rest, a positioning notch is arranged at the edge of the opening of the installation groove. A positioning convex ring corresponding to the positioning notch is provided on the dust-proof ring, and the positioning convex ring is inserted into the positioning notch. A protruding embedding ring is arranged on the bottom surface of the embedding groove, and a fitting notch corresponding to the embedding ring is provided on the fitting ring. The embedding ring is embedded into the fitting notch.

[0015] The arrangement of the positioning notch and the positioning convex ring, as well as the fitting notch and the embedding ring, forms a multiple concave-convex structure, strengthening the dust-proof effect, further reducing the possibility of external impurities entering between the base body and the turret body and blocking the air inlet passage and the air passing passage, thus ensuring the reliable use of the turret tool rest.

[0016] In the above turret tool rest, an air inlet passage is further formed in the base body. The air inlet passage includes a second air inlet that can be communicated with an air source and a second air inlet and outlet facing the turret body. An air outlet passage is further formed in the tool holder assembly. The air outlet passage includes an airtight inlet and an airtight outlet arranged on the wall surface of the tool shank hole. An air passing passage is further formed in the turret body. The air passing passage includes a second air passing outlet that is butt-connected and communicated with the airtight inlet and a second air passing inlet facing the base body. A through hole that is butt-connected and communicated with the second air passing inlet is formed on the fitting ring. A through hole is formed on the bottom surface of the embedding groove. A ventilation joint is inserted into the second air inlet and outlet. The outer end of the ventilation joint passes through the through hole and elastically abuts against the fitting ring to form a seal. A through hole that can be butt-connected and communicated with the through hole is formed in the ventilation joint. When the turret body is rotated to make the first air passing inlet and the first air inlet and outlet butt-connected and communicated, the through hole and the through hole are butt-connected and communicated.

[0017] When using the turret tool rest, the second air inlet is connected to the air source through an external air inlet pipe. Rotate the turret body. When the first air passing inlet is docked and connected to the first air outlet, the air passing channel is connected to the air inlet channel, and the air inlet channel, the air passing channel, and the air outlet channel form an air blowing path. The air source can blow chips out of the tool shank hole through the air blowing path. At the same time, the through hole and the through hole are docked and connected, so that the air passing path is connected to the air inlet path. The air inlet path, the through hole, the through hole, the air passing path, and the air outlet channel form an airtight air path. The air source ventilates the tool shank hole through this airtight air path. When the tool is accurately positioned and the outer side surface of the tool shank is closely attached to the hole wall surface of the tool shank hole, the outlet of the air outlet channel is closed. At this time, the air pressure value at the inlet of the air inlet path remains unchanged. Therefore, the airtightness detection can be carried out through the airtight air path to judge whether the tool shank of the tool is installed in place, improving the reliability of the turret tool rest during use.

[0018] In addition, since the ventilation joint elastically abuts against the mating ring, it avoids air leakage caused by the rotational clearance between the dust-proof ring and the mating ring. Protecting the abutting and sealing area between the ventilation joint and the mating ring in the groove can reduce the possibility of external impurities entering between the ventilation joint and the mating ring and damaging the seal, making the airtightness detection accurate and conducive to ensuring the reliability of the turret tool rest during use.

[0019] In the above turret tool rest, a washer and a guide sleeve are sequentially fixed from the inside to the outside in the second air outlet. The ventilation joint is slidably arranged in the guide sleeve, and the inner end of the ventilation joint passes through the inner hole of the washer. A protruding retaining ring is arranged on the outer side surface of the ventilation joint, and the retaining ring is limited between the shoulder and the washer.

[0020] The washer and the guide sleeve have a guiding and limiting effect on the ventilation joint, enabling the ventilation joint to be aligned with the through hole and stably abut against the mating ring, making the airtightness detection accurate and conducive to ensuring the reliability of the turret tool rest during use.

[0021] In the above turret tool rest, a first sealing ring is fixed on the retaining ring. The first sealing ring abuts against the inner side surface of the guide sleeve to form a seal. A second sealing ring is fixed on the ventilation joint outside the retaining ring. The second sealing ring abuts against the inner side surface of the shoulder to form a seal. A third sealing ring and a fourth sealing ring are fixed on the outer side surface of the guide sleeve. The third sealing ring and the fourth sealing ring abut against the hole wall surface of the second air outlet and form a seal. A through louvre hole is arranged on the side wall of the guide sleeve. The inner end of the louvre hole is located between the first sealing ring and the second sealing ring, and the outer end of the louvre hole is located between the third sealing ring and the fourth sealing ring. A ventilation channel is also opened on the base body. One end of the ventilation channel is arranged on the hole wall surface of the air inlet path and is located between the third sealing ring and the fourth sealing ring, and the other end of the ventilation channel penetrates through the outer surface of the base body.

[0022] The sealing functions of the first sealing ring and the third sealing ring can prevent gas from leaking out from the gaps between the vent joint and the guide sleeve and between the guide sleeve and the inner wall surface of the air inlet passage hole. The sealing functions of the second sealing ring and the fourth sealing ring can prevent impurities from entering. The perforations and the ventilation channels keep the chamber between the first sealing ring and the second sealing ring in communication with the outside world, preventing a vacuum phenomenon from occurring and affecting the sliding of the vent joint, ensuring the abutting seal between the vent joint and the mating ring, and being conducive to ensuring the reliability of the turret tool rest during use.

[0023] In the above turret tool rest, a tool holder piston is provided inside the tool holder assembly. Oil holes one and two respectively communicating with the two chambers on both sides of the tool holder piston are also provided inside the tool holder assembly. A fixed oil passage one and a fixed oil passage two capable of being connected to a hydraulic station are further provided inside the base body. A movable oil passage one and a movable oil passage two are also provided inside the turret body. The two ends of the movable oil passage one are respectively connected to the fixed oil passage one and the oil hole one, and the two ends of the movable oil passage two are respectively connected to the fixed oil passage two and the oil hole two. An oil passage transfer structure is provided between the turret body and the base body to keep the fixed oil passage one in communication with the movable oil passage one and the fixed oil passage two in communication with the movable oil passage two.

[0024] The two chambers on both sides of the tool holder piston are respectively referred to as the clamping chamber and the relaxing chamber. When hydraulic oil is supplied into the base body through the fixed oil passage one, the hydraulic oil can enter the clamping chamber of the tool holder piston through the fixed oil passage one, the movable oil passage one and the oil hole one, thereby driving the tool holder piston to move towards the relaxing chamber. The hydraulic oil in the relaxing chamber flows out through the oil hole two, the movable oil passage two and the fixed oil passage two, realizing the clamping action of the tool. Similarly, when hydraulic oil is supplied into the base body through the fixed oil passage two, the hydraulic oil can enter the relaxing chamber through the fixed oil passage two, the movable oil passage two and the oil hole two, thereby driving the tool holder piston to move towards the clamping chamber. The hydraulic oil in the clamping chamber flows out through the oil hole one, the movable oil passage one and the fixed oil passage one, realizing the relaxing action of the tool. That is to say, the movable oil passage one and the fixed oil passage one extend the oil hole one in the existing mounting seat and extend it to the base body, and the movable oil passage two and the fixed oil passage two extend the oil hole two in the existing mounting seat and extend it to the base body. In this way, the controller for controlling the flow direction of the hydraulic oil can be installed outside the base body, rather than being installed on the mounting seat or the turret body facing the chips and oil mist directly, avoiding the failure of the controller caused by fine chips and oil mist during the machining process, and effectively improving the reliability of the turret tool rest during use.

[0025] The fixed oil passage one and the fixed oil passage two are provided inside the base body, and the movable oil passage one and the movable oil passage two are provided inside the turret body, so that the fixed oil passage one and the fixed oil passage two are protected inside the base body, and the movable oil passage one and the movable oil passage two are protected inside the turret body, avoiding the influence of the external environment and medium on the smooth transmission of the hydraulic oil, thus ensuring the reliability of the hydraulic oil transmission and the reliability of the turret tool rest during use.

[0026] In the above turret tool rest, the oil circuit adapter structure includes an adapter hole provided in the base body and an adapter shaft provided on the turret body, or the oil circuit adapter structure includes an adapter hole provided in the turret body and an adapter shaft provided on the base body. The adapter shaft is inserted into the adapter hole, and an annular cavity one and an annular cavity two are provided between the outer side surface of the adapter shaft and the hole wall surface of the adapter hole. The fixed oil circuit one and the movable oil circuit one are communicated through the annular cavity one, and the fixed oil circuit two and the movable oil circuit two are connected through the annular cavity two.

[0027] When the turret body rotates and the adapter shaft rotates in the adapter hole, the positions of the annular cavity one and the annular cavity two will not change with the adapter shaft, thereby ensuring that the transmission of hydraulic oil always remains unobstructed, ensuring the reliability of the transmission of hydraulic oil, and ensuring the reliability of the use of the turret tool rest.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] An air blowing circuit is provided in the turret tool rest to realize air blowing and chip removal of the tool holder hole, reduce the occurrence of faults, and improve the reliability of use. The air inlet channel and the air passing channel are communicated in the installation groove of the base body, reducing the possibility of blockage and ensuring the reliability of use. An airtight air circuit is provided in the turret tool rest to realize the detection of the airtightness between the tool and the tool holder. At the same time, the air inlet passage and the air passing passage are docked at the mating ring and the dust-proof ring, and the air vent joint elastically abuts against the mating ring, ensuring the reliability of use. A tool holder hydraulic oil circuit is provided in the turret tool rest to install the controller outside the base body, avoiding the controller facing the chips and oil mist directly, and ensuring the reliability of the use of the controller. Description of the Drawings

[0030] Figure 1 is the three-dimensional view of the first embodiment of this turret tool rest Figure 1 ;

[0031] Figure 2 is the three-dimensional view of the first embodiment of this turret tool rest Figure 2 ;

[0032] Figure 3 is the three-dimensional view of the first embodiment of this turret tool rest Figure 3 ;

[0033] Figure 4 is the path diagram of the air blowing circuit in the first embodiment of this turret tool rest;

[0034] Figure 5 is Figure 4 the enlarged view at A in

[0035] Figure 6 is the path diagram of the airtight air circuit in the first embodiment of this turret tool rest;

[0036] Figure 7 is Figure 6 an enlarged view of location B in

[0037] Figure 8 a path diagram of the tool holder hydraulic oil circuit in the first embodiment of the present turret tool rest;

[0038] Figure 9 is Figure 8 an enlarged view of location C in

[0039] In the figure, 1. base body; 1a. fixed oil circuit one; 1b. fixed oil circuit two; 2. turret box; 2a. installation groove; 2a1. positioning notch; 2b. air inlet channel; 2b1. air inlet one; 2b2. air outlet one; 2c. air intake path; 2c1. air inlet two; 2c2. air outlet two; 2d. ventilation channel; 3. fixed shaft; 4. additional box body; 5. oil circuit adapter block; 5a. adapter hole; 6. turret body; 6a. insertion part; 6b. movable oil circuit one; 6c. movable oil circuit two; 6d. air passing channel; 6d1. air passing inlet one; 6d2. air passing outlet one; 7. main body disc; 7a. installation surface; 7b. gas channel; 7c. air passing path; 7c1. air passing inlet two; 7c2. air passing outlet two; 7d. insertion cylinder; 8. tool disc end cover; 8a. assembly hole; 9. shaft cover; 9a. adapter shaft; 9a1. annular cavity one; 9a2. annular cavity two; 10. tool holder assembly; 10a. tool holder piston; 10b. tool shank hole; 10c. oil hole one; 10d. oil hole two; 10e. air outlet channel; 10e1. air blowing inlet; 10e2. air blowing outlet; 10f. air outlet path; 10f1. airtight inlet; 10f2. airtight outlet; 12. spring; 13. ventilation joint; 13a. through hole; 13b. retaining ring; 14. washer; 15. guide sleeve; 15a. shoulder; 15b. perforated hole; 16. sealing ring one; 17. sealing ring two; 18. sealing ring three; 19. sealing ring four; 20. dust ring; 20a. embedding groove; 20b. embedding ring; 20c. positioning convex ring; 20d. perforation; 21. mating ring; 21a. mating notch; 21b. through hole; 22. sealing ring; 23. end tooth disc; 23a. air hole. Detailed Embodiment

[0040] The following are specific embodiments of the present invention and, in conjunction with the accompanying drawings, further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0041] Embodiment One

[0042] As shown in Figures 1-9As shown in the figure, a turret tool rest includes a base body 1 and a turret body 6. The base body 1 includes a tool turret box 2 and a fixed shaft 3 fixed on the tool turret box 2. An installation groove 2a is formed on the front end face of the tool turret box 2, and a positioning groove is arranged on the bottom surface of the installation groove 2a. The rear end of the fixed shaft 3 is inserted into the positioning groove and fixed. An additional box body 4 is fixed on the front end face of the fixed shaft 3, and the additional box body 4 is used for installing the driving mechanism of the power tool holder. An oil circuit adapter block 5 is fixed on the front end face of the additional box body 4. The turret body 6 includes a main body disk 7. The main body disk 7 is sleeved on the fixed shaft 3, and a bearing is installed between the main body disk 7 and the fixed shaft 3. A plug-in cylinder 7d protruding backward is arranged on the rear end face of the main body disk 7. The plug-in cylinder 7d is inserted into the installation groove 2a, and a end face gear disk 23 is fixed on the rear end face of the plug-in cylinder 7d. The plug-in cylinder 7d and the end face gear disk 23 form an insertion part 6a of the turret body 6. An installation surface 7a is arranged on the outer peripheral surface of the main body disk 7, and a tool holder assembly 10 is fixed on the installation surface 7a. The tool holder assembly 10 includes an installation seat and a tool holder unit fixed on the installation seat. A tool disk end cover 8 is fixedly connected to the front end face of the main body disk 7. An assembly hole 8a is arranged on the tool disk end cover 8. The oil circuit adapter block 5 is located in the assembly hole 8a. A shaft cover 9 is fixedly connected to the front end face of the tool disk end cover 8, and the shaft cover 9 seals the front port of the assembly hole 8a.

[0043] A movable gear disk is sleeved outside the fixed shaft 3. The movable gear disk is circumferentially fixed on the fixed shaft 3 and can slide axially on the fixed shaft 3. The movable gear disk is located between the fixed shaft 3 and the plug-in cylinder 7d and in front of the end face gear disk 23. A protruding piston ring is arranged on the inner side face of the movable gear disk. A locking oil circuit one and a locking oil circuit two are arranged in the base body 1. The locking oil circuit one communicates the hydraulic station with the front side chamber of the piston ring, and the locking oil circuit two communicates the hydraulic station with the rear side chamber of the piston ring. The locking oil circuit one is arranged in the tool turret box 2 and the fixed shaft 3. The two end ports of the locking oil circuit one are respectively arranged on the outer side face of the tool turret box 2 and the outer side face of the fixed shaft 3. The locking oil circuit two is also arranged in the tool turret box 2 and the fixed shaft 3. The two end ports of the locking oil circuit two are respectively arranged on the outer side face of the tool turret box 2 and the outer side face of the fixed shaft 3. The locking oil circuit one and the locking oil circuit two form a locking hydraulic oil circuit. A tooth ring is arranged on the outer side face of the end face gear disk 23, and positioning teeth capable of meshing with the movable gear disk to form circumferential locking are arranged on the front end face of the end face gear disk 23. A driving shaft is installed in the base body 1, a gear is arranged on the driving shaft, and the gear meshes with the tooth ring. The driving shaft rotates to drive the end face gear disk 23 to rotate. When the turret body 6 rotates to the required angle, the hydraulic station supplies oil to the locking oil circuit one, and the movable gear disk slides backward to make the movable gear disk mesh with the end face gear disk 23 for circumferential locking. At this time, the turret body 6 can no longer rotate, and the circumferential position of the turret body 6 is locked. When it is necessary to release the locking of the turret body 6, the hydraulic station supplies oil to the locking oil circuit two, the movable gear disk slides forward, and the movable gear disk no longer meshes with the end face gear disk 23 to form circumferential locking.

[0044] As Figure 1 ,Figure 8 and Figure 9As shown in the figure, a tool holder piston 10a and a tool shank hole 10b are provided in the tool holder unit. The tool shank of the tool is inserted into the tool shank hole 10b, and the hydraulic oil drives the tool holder piston 10a to clamp and release the tool. The structure of the tool holder unit can refer to the patent document with the publication number CN 101850427A. An oil hole one 10c and an oil hole two 10d are opened in the tool holder assembly 10, which are respectively communicated with the two side chambers of the tool holder piston 10a. A fixed oil path one 1a and a fixed oil path two 1b that can be communicated with the hydraulic station are opened in the base body 1. A movable oil path one 6b and a movable oil path two 6c are opened in the turret body 6. The two ends of the movable oil path one 6b are respectively communicated with the fixed oil path one 1a and the oil hole one 10c, and the movable oil path two 6c is respectively communicated with the fixed oil path two 1b and the oil hole two 10d. An oil path transfer structure is provided between the turret body 6 and the base body 1 to keep the fixed oil path one 1a and the movable oil path one 6b in communication and the fixed oil path two 1b and the movable oil path two 6c in communication. The oil path transfer structure includes a transfer hole 5a provided on the oil path transfer block 5 and a transfer shaft 9a provided on the rear end face of the shaft cover 9. The transfer shaft 9a is inserted into the transfer hole 5a. An annular cavity one 9a1 and an annular cavity two 9a2 are provided between the outer side surface of the transfer shaft 9a and the hole wall surface of the transfer hole 5a. The fixed oil path one 1a and the movable oil path two 6c are communicated through the annular cavity one 9a1, and the fixed oil path two 1b and the movable oil path two 6c are communicated through the annular cavity two 9a2. One end port of the fixed oil path one 1a is provided on the outer side surface of the tool turret box 2. The fixed oil path one 1a extends successively in the tool turret box 2, the fixed shaft 3, the additional box body 4 and the oil path transfer block 5. The other end port of the fixed oil path one 1a is provided on the hole wall surface of the transfer hole 5a and is communicated with the annular cavity one 9a1. One end port of the fixed oil path two 1b is provided on the outer side surface of the tool turret box 2. The fixed oil path two 1b extends successively in the tool turret box 2, the fixed shaft 3, the additional box body 4 and the oil path transfer block 5. The other end port of the fixed oil path two 1b is provided on the hole wall surface of the transfer hole 5a and is communicated with the annular cavity two 9a2. One end port of the movable oil path one 6b is provided on the mounting surface 7a and is opposite to the oil hole one 10c. The movable oil path one 6b extends successively in the main body disk 7, the tool disk end cover 8 and the shaft cover 9. The other end port of the movable oil path one 6b is provided on the outer side surface of the transfer shaft 9a and is communicated with the annular cavity one 9a1. One end port of the movable oil path two 6c is provided on the mounting surface 7a and is opposite to the oil hole two 10d. The movable oil path two 6c extends successively in the main body disk 7, the tool disk end cover 8 and the shaft cover 9. The other end port of the movable oil path two 6c is provided on the outer side surface of the transfer shaft 9a and is communicated with the annular cavity two 9a2. The fixed oil path one 1a, the annular cavity one 9a1, the movable oil path two 6c, the oil hole one 10c, the oil hole two 10d, the movable oil path two 6c, the annular cavity two 9a2 and the fixed oil path two 1b form the tool holder hydraulic oil path.When the tool clamp assembly 10 needs to fix the tool, the hydraulic station supplies oil to the fixed oil circuit 1a, and the hydraulic oil passes through the annular cavity 9a1, the movable oil circuit 6b and the oil hole 10c to enter the front chamber of the tool clamp piston 10a, and the tool clamp piston 10a retreats to allow the tool clamp to fix the tool inserted into the shank hole 10b. When the tool needs to be released, the hydraulic station supplies oil to the fixed oil circuit 2 1b, and the hydraulic oil passes through the annular cavity 2 9a2, the movable oil circuit 2 6c and the oil hole 2 10d to enter the rear chamber of the tool clamp piston 10a, and the tool clamp piston 10a moves forward to allow the tool clamp to release the tool.

[0045] like Figure 2 , Figure 4 and Figure 5 As shown, the base body 1 is also provided with an air inlet 2b, which includes an air inlet 2b1 that can be connected to the air source and an air inlet outlet 2b2 toward the turret body 6. The air inlet 2b is arranged in the turret box 2, the air inlet 2b1 is arranged on the outer surface of the turret box 2, and the air inlet outlet 2b2 is arranged on the bottom surface of the mounting groove 2a. The turret body 6 is also provided with an air passage 6d, which includes an air passage outlet 6d2 and an air passage inlet 6d1 toward the base body 1. The air passage 6d is composed of an air hole 23a arranged in the end tooth disk 23 and a gas channel 7b arranged in the main body disk 7. The inlet of the gas channel 7b is arranged on the rear end surface of the insertion cylinder 7d and is connected to the outlet of the air hole 23a. The outlet of the gas channel 7b, namely the air passage outlet 6d2, is arranged on the mounting surface 7a. As the turret body 6 rotates, the inlet of the air hole 23a, i.e., the air inlet 6d1, can be connected to or separated from the air inlet outlet 2b2. A sealing gasket is fixed at the inlet of the air hole 23a, i.e., the air inlet 6d1, which is against the bottom surface of the mounting groove 2a and forms a seal. The tool holder assembly 10 is also provided with an air outlet channel 10e connected to the shank hole 10b. The air outlet channel 10e includes an air blowing inlet 10e1 facing the mounting surface 7a and an air blowing outlet 10e2 arranged on the wall surface of the shank hole 10b. The air blowing inlet 10e1 is connected to the air outlet 6d2. When the turret body 6 is rotated, when the air inlet 6d1 can be connected to the air inlet outlet 2b2, the air inlet channel 2b, the air passing channel 6d and the air outlet channel 10e form an air blowing path, and the air source can blow air to the shank hole 10b through this air blowing path.

[0046] like Figure 2 , Figure 3 , Figure 6 and Figure 7As shown, an air intake passage 2c is also formed in the base body 1. The air intake passage 2c includes an air intake inlet two 2c1 capable of communicating with an air source and an air intake outlet two 2c2 facing the turret body 6. The air intake passage 2c is arranged in the tool turret box 2. The air intake inlet two 2c1 is arranged on the outer side surface of the tool turret box 2, and the air intake outlet two 2c2 is arranged on the front end surface of the tool turret box 2. A gas passing passage 7c capable of communicating with the air intake passage 2c is also formed in the turret body 6. The gas passing passage 7c includes a gas passing outlet two 7c2 and a gas passing inlet two 7c1 facing the base body 1. The gas passing passage 7c is arranged in the main body disk 7. The gas passing inlet two 7c1 is arranged on the rear end surface of the main body disk 7, and the gas passing outlet two 7c2 is arranged on the mounting surface 7a. An air outlet passage 10f communicating with the tool holder hole 10b is also formed in the tool holder assembly 10. The air outlet passage 10f includes an airtight inlet 10f1 facing the mounting surface 7a and an airtight outlet 10f2 arranged on the hole wall surface of the tool holder hole 10b. The airtight inlet 10f1 is butt-connected and communicated with the gas passing outlet two 7c2. A spring 12 and a ventilation joint 13 are sequentially inserted into the air intake outlet two 2c2 from the inside to the outside, that is, from the back to the front. The inner end of the spring 12 abuts against the hole wall surface of the air intake passage 2c, and the outer end of the spring 12 abuts against the ventilation joint 13. The ventilation joint 13 has a through hole 13a communicating with the air intake passage 2c, and the through hole 13a can be connected with the gas passing inlet two 7c1. A washer 14 and a guide sleeve 15 are sequentially fixed in the air intake outlet two 2c2 from the inside to the outside. The ventilation joint 13 is inserted into the guide sleeve 15, and the inner end of the ventilation joint 13 passes through the inner hole of the washer 14 and abuts against the spring 12. A protruding retaining ring 13b is arranged on the outer side surface of the ventilation joint 13, and a shoulder 15a is arranged on the inner side surface of the guide sleeve 15. The retaining ring 13b is limited between the shoulder 15a and the washer 14. A sealing ring one 16 is fixed on the retaining ring 13b, and the sealing ring one 16 abuts against the inner side surface of the guide sleeve 15 to form a seal. A sealing ring two 17 is fixed on the ventilation joint 13 outside the retaining ring 13b, and the sealing ring two 17 abuts against the inner side surface of the shoulder 15a to form a seal. A sealing ring three 18 and a sealing ring four 19 are fixed on the outer side surface of the guide sleeve 15, and the sealing ring three 18 and the sealing ring four 19 abut against the hole wall surface of the air intake outlet two 2c2 and form a seal. A through louvre hole 15b is arranged on the side wall of the guide sleeve 15. There are two louvre holes 15b and they are symmetrically arranged. The inner end of the louvre hole 15b is located between the sealing ring one 16 and the sealing ring two 17, and the outer end of the louvre hole 15b is located between the sealing ring three 18 and the sealing ring four 19. A ventilation channel 2d is also formed in the tool turret box 2. One end of the ventilation channel 2d is arranged on the hole wall surface of the air intake passage 2c and is located between the sealing ring three 18 and the sealing ring four 19, and the other end of the ventilation channel 2d penetrates through the outer surface of the tool turret box 2. As Figure 3 As described above, in order to ensure the connection of the ventilation channel 2d, the other end of the ventilation channel 2d is arranged on the bottom surface of the tool turret box 2.

[0047] A dust-proof ring 20 and a mating ring 21 are provided between the base body 1 and the turret body 6. The mating ring 21 is fixed on the rear end face of the main body disk 7 and surrounds the outside of the insertion cylinder 7d. The dust-proof ring 20 is fixed on the front end face of the tool turret box 2. An annular groove 20a is formed on the front end face of the dust-proof ring 20, and the mating ring 21 is inserted into the groove 20a. A positioning notch 2a1 is provided at the edge of the opening of the installation groove 2a. The dust-proof ring 20 has a positioning convex ring 20c corresponding to the positioning notch 2a1, and the positioning convex ring 20c is inserted into the positioning notch 2a1. A protruding embedding ring 20b is provided on the bottom surface of the groove 20a. The mating ring 21 has a mating notch 21a corresponding to the embedding ring 20b, and the embedding ring 20b is inserted into the mating notch 21a. The dust-proof ring 20 is fixed on the tool turret box 2 to press the guide sleeve 15 so that the guide sleeve 15 is fixed in the air outlet two 2c2. A sealing ring 22 is provided between the inner side surface of the dust-proof ring 20 and the outer side surface of the insertion cylinder 7d. The sealing ring 22 is fixed on the insertion cylinder 7d, and the sealing lip of the sealing ring 22 abuts against the dust-proof ring 20. A through hole 21b communicating with the air inlet two 7c1 is formed on the mating ring 21. A through hole 20d is formed on the bottom surface of the groove 20a. The outer end of the air vent joint 13 passes through the through hole 20d and elastically abuts against the mating ring 21 to form a seal. When the turret body 6 is rotated to connect the air inlet one 6d1 with the air outlet one 2b2, the through hole 21b is connected with the through hole 13a. That is, as the turret body 6 rotates, when the air passage 6d is connected with the air inlet passage 2b, the air passage 7c is connected with the air inlet passage 2c. The air passage 7c is connected with the air inlet passage 2c. The air inlet passage 2c, the through hole 13a, the through hole 21b, the air passage 7c and the air outlet passage 10f form an airtight air path. The air source ventilates the tool holder hole 10b through this airtight air path. When the tool is accurately positioned so that the outer side surface of the tool holder closely abuts against the hole wall surface of the tool holder hole 10b, the outlet of the air outlet passage 10f is closed. At this time, the air pressure value at the inlet of the air inlet passage 2c remains unchanged. Therefore, the airtightness detection can be carried out through the airtight air path to judge whether the tool holder of the tool is installed in place. In order to ensure the sealing performance, sealing rings or gaskets are provided at all the joints that need to be sealed in the tool clamp hydraulic oil circuit, the air blowing air path and the airtight air path.

[0048] A moving mechanism is provided on the base of the machine tool. The turret tool rest is vertically installed on the moving mechanism, and the moving mechanism drives the turret tool rest to perform a spatial movement. The tool shank hole 10b of the tool holder unit faces downward. A bracket is fixed on the base of the machine tool outside the machining area of the machine tool, and a tool magazine is installed on the bracket. The tool magazine includes a disc, and several tool holders are installed on the outer edge of the disc. The jaws of the tool holder elastically clamp the tool, and the tool shank of the tool faces upward. A rotating motor is fixed on the bracket, and the rotating shaft of the rotating motor is connected to the disc and can drive the disc to rotate. A positioning sensor is also provided on the bracket, and the positioning sensor is used to measure the position of the tool. The machine tool is provided with a hydraulic station, and a controller is connected to the hydraulic station. The controller includes a locking reversing solenoid valve and a tool holder reversing solenoid valve. The locking reversing solenoid valve is connected between the hydraulic station and the locking hydraulic oil circuit, and the tool holder reversing solenoid valve is connected between the hydraulic station and the tool holder hydraulic oil circuit. The locking reversing solenoid valve is used to control the flow direction of the locking hydraulic oil circuit, and the tool holder reversing solenoid valve is used to control the flow direction of the tool holder hydraulic oil circuit.

[0049] When the tool in the tool holder assembly 10 needs to be removed during the machining process of the machine tool, the moving mechanism moves the turret tool rest above the tool magazine. The turret body 6 rotates so that the tool holder assembly 10 is located above the outer edge of the disc. At the same time, the disc rotates so that the empty tool holder moves below the tool holder assembly 10. The turret tool rest moves downward so that the tool in the tool holder assembly 10 is inserted into the tool holder. Then the tool holder assembly 10 releases the tool, and the turret tool rest moves upward away from the tool magazine. When a tool needs to be installed in the tool holder assembly 10, the turret tool rest moves above the tool magazine. The turret body 6 rotates so that the tool holder assembly 10 is located above the outer edge of the disc. At this time, the air inlet channel 2b and the air passing channel 6d are connected, and the air source blows air into the tool shank hole 10b through the air blowing air path to remove chips. At the same time, the air inlet passage 2c and the air passing passage 7c are connected. The disc rotates so that the target tool holder moves below the tool holder assembly 10. Then the turret tool rest moves so that the tool shank of the target tool is inserted into the tool shank hole 10b of the tool holder assembly 10. The tool holder assembly 10 clamps the tool. The air source passes air through the airtight air path into the tool shank hole 10b for airtightness detection. After the airtightness detection is qualified, the turret tool rest moves to separate the tool from the tool holder. Since the chips and oil stains in the tool shank hole 10b can be blown away through the air blowing air path before the tool holder assembly 10 clamps the tool, the inner wall surface of the tool shank hole 10b is kept clean, so that the tool is accurately positioned in the tool shank hole 10b, reducing the probability of faults and improving the use reliability of the turret tool rest. Moreover, after the tool holder assembly 10 clamps the tool, the airtightness of the tool can be detected by passing air through the airtight air path into the tool shank hole 10b, improving the use reliability of the turret tool rest. In addition, by arranging the tool holder hydraulic oil circuit in the turret tool rest, the tool holder reversing solenoid valve can be installed outside the turret tool rest, avoiding the tool holder reversing solenoid valve facing the chips and oil mist directly, and ensuring the stability and reliability of the operation of the tool holder reversing solenoid valve.

[0050] In addition, an intake passage 2b and an intake air path 2c that can be connected to an air source are provided in the base body 1, and the base body 1 does not rotate, avoiding the twisting of the external intake pipe, ensuring that the external intake pipe remains unobstructed, and reducing the occurrence of failures. At the same time, an air passage 6d is provided in the turret body 6, and the turret body 6 rotates. In this way, the turret body 6 can only connect the air passage 6d to the intake passage 2b at a single circumferential position. After setting the position of the turret body 6 where the air passage 6d is connected to the intake passage 2b as the tool change position, it avoids blowing air when not changing tools and affects the stability of the tool fixed in the tool holder, thus ensuring the reliability of the turret tool rest. Moreover, the intake passage 2b, the air passage 6d, and the outlet passage 10e are respectively provided in the base body 1, the turret body 6, and the tool holder assembly 10, and the intake air path 2c, the air passage 7c, and the outlet air path 10f are also respectively provided in the base body 1, the turret body 6, and the tool holder assembly 10, so that the air blowing path and the airtight path are protected inside the turret tool rest and separated from the external environment, avoiding external impurities from entering the air blowing path and the airtight path and causing blockages, ensuring the effectiveness of air blowing to remove chips and the reliability of airtightness detection, and ensuring the reliability of the turret tool rest.

[0051] Embodiment 2

[0052] The oil circuit transfer structure is different from that of the first embodiment. The oil circuit transfer structure includes a transfer hole 5a provided on the cutter head end cover 8 and a transfer shaft 9a provided on the oil circuit transfer block 5. The transfer shaft 9a is coaxially arranged with the main body disk 7, and the transfer shaft 9a is inserted into the transfer hole 5a. An annular cavity one 9a1 and an annular cavity two 9a2 are provided between the hole wall surface of the transfer hole 5a and the transfer shaft 9a. The fixed oil circuit one 1a and the movable oil circuit two 6c are communicated through the annular cavity one 9a1, and the fixed oil circuit two 1b and the movable oil circuit two 6c are communicated through the annular cavity two 9a2. One end port of the fixed oil circuit one 1a is provided on the outer side surface of the tool turret box 2, and the other end port of the fixed oil circuit one 1a is provided on the outer side surface of the transfer shaft 9a and communicated with the annular cavity one 9a1. One end port of the fixed oil circuit two 1b is provided on the outer side surface of the tool turret box 2, and the other end port of the fixed oil circuit two 1b is provided on the outer side surface of the transfer shaft 9a and communicated with the annular cavity two 9a2. One end port of the movable oil circuit one 6b is provided on the mounting surface 7a and opposite to the oil hole one 10c, and the other end port of the movable oil circuit one 6b is provided on the hole wall surface of the transfer hole 5a and communicated with the annular cavity one 9a1. One end port of the movable oil circuit two 6c is provided on the mounting surface 7a and opposite to the oil hole two 10d, and the other end port of the movable oil circuit two 6c is provided on the hole wall surface of the transfer hole 5a and communicated with the annular cavity two 9a2. The transfer shaft 9a is not provided on the shaft cover 9, and neither the movable oil circuit one 6b nor the movable oil circuit two 6c passes through the shaft cover 9. The movable oil circuit one 6b is sequentially arranged in the main body disk 7 and the cutter head end cover 8, and the movable oil circuit two 6c is sequentially arranged in the main body disk 7 and the cutter head end cover 8. Other structures are the same as those of the first embodiment.

[0053] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to substitute, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A turret tool holder, comprising a base body (1), a rotatable turret body (6) being mounted on the base body (1), a tool holder assembly (10) being fixed on the turret body (6), and a tool holder hole (10b) being provided on the tool holder assembly (10). It is characterized in that The base body (1) is provided with an air inlet channel (2b), the air inlet channel (2b) comprising an air inlet inlet (2b1) capable of being connected to an air source and an air inlet outlet (2b2) ​​facing the turret body (6); the tool holder assembly (10) is provided with an air outlet channel (10e) connected to the tool handle hole (10b); the turret body (6) is provided with an air passage channel (6d), the air passage channel (6d) comprising an air outlet (6d2) connected to the air outlet channel (10e) and an air inlet (6d1) facing the base body (1); and rotating the turret body (6) can make the air inlet (6d1) and the air inlet outlet (2b2) ​​connected to the turret body (1) be connected to each other. The turret body (6) is provided with a mating opening (2b2) ​​connected or staggered, a matching ring (21) is provided between the base body (1) and the turret body (6), the matching ring (21) is fixed on the turret body (6), the base body (1) is also provided with an air intake passage (2c), the air intake passage (2c) includes an air intake inlet (2c1) that can be connected to an air source and an air intake outlet (2c2) facing the turret body (6), the tool holder assembly (10) is also provided with an air outlet passage (10f), the air outlet passage (10f) includes an airtight outlet (10f2) provided on the wall surface of the tool handle hole (10b), and the turret body (6) is also provided with a There is an air passage (7c), a through hole (21b) is provided on the matching ring (21), the air passage (7c) is connected with the through hole (21b) and the air outlet passage (10f), a vent joint (13) is inserted in the second air inlet and outlet (2c2), the outer end of the vent joint (13) elastically abuts against the matching ring (21) to form a seal, the vent joint (13) has a through hole (13a) that can be connected to the through hole (21b), and when the turret body (6) is rotated to connect the air inlet 1 (6d1) with the air inlet and outlet 1 (2b2), the through hole (21b) and the through hole (13a) are connected to each other. A dustproof ring (20) is arranged between the base body (1) and the turret body (6), and an annular embedding groove (20a) is provided on the dustproof ring (20); the air outlet passage (10f) includes an airtight inlet (10f1); the air passage (7c) includes an air outlet 2 (7c2) connected to the airtight inlet (10f1) and an air inlet 2 (7c1) facing the base body (1); a through hole (21b) on the matching ring (21) is connected to the air inlet 2 (7c1); a through hole (20d) is provided on the bottom surface of the embedding groove (20a), and the outer end of the vent joint (13) passes through the through hole (20d).

2. The turret tool holder according to claim 1, It is characterized in that The base body (1) is provided with a mounting groove (2a), the turret body (6) has an insertion part (6a), the insertion part (6a) is inserted into the mounting groove (2a), the first air inlet and outlet (2b2) is arranged on the bottom surface of the mounting groove (2a), and the first air passing inlet (6d1) is arranged on the inner end surface of the insertion part (6a).

3. The turret tool rest according to claim 2, characterized in that, the fitting ring (21) surrounds the outside of the insertion part (6a), the dust-proof ring (20) is fixed on the base body (1), and the fitting ring (21) is embedded into the embedding groove (20a).

4. The turret tool rest according to claim 3, characterized in that, a positioning notch (2a1) is arranged at the edge of the notch of the mounting groove (2a), the dust-proof ring (20) has a positioning convex ring (20c) corresponding to the positioning notch (2a1), the positioning convex ring (20c) is inserted into the positioning notch (2a1), a protruding embedding ring (20b) is arranged on the bottom surface of the embedding groove (20a), the fitting ring (21) has a fitting notch (21a) corresponding to the embedding ring (20b), and the embedding ring (20b) is embedded into the fitting notch (21a).

5. The turret tool rest according to claim 3, characterized in that, a washer (14) and a guide sleeve (15) are sequentially fixed from inside to outside in the second air inlet and outlet (2c2), the ventilation joint (13) is slidably arranged in the guide sleeve (15), and the inner end of the ventilation joint (13) passes through the inner hole of the washer (14). A protruding retaining ring (13b) is arranged on the outer side surface of the ventilation joint (13), and the retaining ring (13b) is limited between the shoulder (15a) and the washer (14).

6. The turret tool rest according to claim 5, characterized in that, a first sealing ring (16) is fixed on the retaining ring (13b), the first sealing ring (16) abuts against the inner side surface of the guide sleeve (15) to form a seal, a second sealing ring (17) is fixed on the ventilation joint (13) outside the retaining ring (13b), the second sealing ring (17) abuts against the inner side surface of the shoulder (15a) to form a seal, a third sealing ring (18) and a fourth sealing ring (19) are fixed on the outer side surface of the guide sleeve (15), the third sealing ring (18) and the fourth sealing ring (19) abut against the hole wall surface of the second air inlet and outlet (2c2) to form a seal, a through louvre hole (15b) is arranged on the side wall of the guide sleeve (15), the inner end of the louvre hole (15b) is located between the first sealing ring (16) and the second sealing ring (17), the outer end of the louvre hole (15b) is located between the third sealing ring (18) and the fourth sealing ring (19), and a ventilation channel (2d) is further arranged on the base body (1). One end of the ventilation channel (2d) is arranged on the hole wall surface of the air inlet passage (2c) and is located between the third sealing ring (18) and the fourth sealing ring (19), and the other end of the ventilation channel (2d) penetrates through the outer surface of the base body (1).

7. The turret tool rest according to any one of claims 1-6, It is characterized in that a tool holder piston (10a) is provided inside the tool holder assembly (10), a first oil hole (10c) and a second oil hole (10d) which are respectively communicated with the two side chambers of the tool holder piston (10a) are further formed inside the tool holder assembly (10), a first fixed oil passage (1a) and a second fixed oil passage (1b) which can be communicated with a hydraulic station are further formed inside the base body (1), a first movable oil passage (6b) and a second movable oil passage (6c) are further formed inside the turret body (6), two ends of the first movable oil passage (6b) are respectively communicated with the first fixed oil passage (1a) and the first oil hole (10c), two ends of the second movable oil passage (6c) are respectively communicated with the second fixed oil passage (1b) and the second oil hole (10d), and an oil passage transfer structure for keeping the first fixed oil passage (1a) communicated with the first movable oil passage (6b) and the second fixed oil passage (1b) communicated with the second movable oil passage (6c) is arranged between the turret body (6) and the base body (1).

8. The turret tool rest according to claim 7 It is characterized in that the oil passage transfer structure includes a transfer hole (5a) arranged in the base body (1) and a transfer shaft (9a) arranged on the turret body (6), or the oil passage transfer structure includes a transfer hole (5a) arranged in the turret body (6) and a transfer shaft (9a) arranged on the base body (1), the transfer shaft (9a) is inserted into the transfer hole (5a), a first annular cavity (9a1) and a second annular cavity (9a2) are arranged between the outer side surface of the transfer shaft (9a) and the hole wall surface of the transfer hole (5a), the first fixed oil passage (1a) is communicated with the first movable oil passage (6b) through the first annular cavity (9a1), and the second fixed oil passage (1b) is connected with the second movable oil passage (6c) through the second annular cavity (9a2).

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