High-precision CBN tool replacing device with positioning structure

Abstract

The utility model discloses a high-precision CBN cutter replacing device with a positioning structure, relates to the technical field of replacing devices, and aims to solve the problems that in the prior art, when a cutter is replaced, the cutter cannot be accurately positioned and stopped due to the inertial effect, and the accurate replacing work of the cutter is affected. A cutter replacing mechanism is arranged in the cutter box, the cutter replacing mechanism comprises a cutter head, a cutter holder and a cutter body, a connecting ring groove is formed in the lower end face of the cutter head, a positioning ring cavity is formed in the cutter head along the upper portion of the connecting ring groove, and a positioning mechanism is arranged in the positioning ring cavity; the positioning mechanism comprises a pressing disc and a transmission rod, the lower end of the transmission rod penetrates through the connecting ring groove and extends to the position below the cutter disc, the positioning mechanism can vertically ascend and descend, and a center shaft is fixedly installed in the cutter disc.

Description

Technical Field

[0001] The utility model relates to the technical field of replacement devices, in particular to a replacement device for a high-precision CBN tool with a positioning structure. Background Art

[0002] CBN tools are high-precision cubic boron nitride tools with extremely high hardness, wear resistance, heat resistance and good chemical stability. Their hardness is second only to diamond. They are important tools for machining high-hardness materials in the machining industry. During the machining process, different cutting tools need to be replaced. Therefore, existing machining equipment is usually integrated with an automatic tool changing device to cope with the frequent tool replacement needs. When replacement is required, the equipment will control the tool holder to move to the tool box position to replace the tool.

[0003] For example, the authorized patent with announcement number CN215747991U (a tool changing device for precision machining tools) comprises a setting disk, a setting box and a tool box. The inner wall of the setting box is provided with an adjustment groove. The outer wall of the front side of the setting box is connected to a support frame by bolts. The setting box is connected to a rotating motor through the support frame. The rear end of the rotating motor is connected to a rotating shaft through a coupling. The rotating shaft is movably connected to the setting disk near the middle end. The top of the setting disk is evenly provided with a first type of loading bolts, and the bottom of the setting disk is evenly provided with a second type of loading bolts.

[0004] Although the above-mentioned existing technology improves the convenience of tool replacement and alleviates the usage restrictions by increasing the number of tools, it does not have a positioning structure. Therefore, when the tool is replaced, due to the inertia effect, the tool cannot be accurately positioned and stopped, affecting the accurate replacement of the tool. Therefore, the market urgently needs to develop a high-precision CBN tool replacement device with a positioning structure to help people solve the existing problems. Utility Model Content

[0005] The purpose of the present invention is to provide a high-precision CBN tool replacement device with a positioning structure to solve the problem raised in the above background technology that when replacing the tool, the tool cannot be accurately positioned and stopped due to the inertia effect, which affects the accurate replacement of the tool.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a replacement device for high-precision CBN tools with a positioning structure, comprising a tool box, a tool replacement mechanism is arranged inside the tool box, the tool replacement mechanism includes a cutter disc, a tool holder and a tool body, a connecting ring groove is provided on the lower end surface of the cutter disc, a positioning ring cavity is provided inside the cutter disc along the upper side of the connecting ring groove, a positioning mechanism is provided inside the positioning ring cavity, the positioning mechanism includes a pressure plate and a transmission rod, the lower end of the transmission rod passes through the connecting ring groove and extends to the bottom of the cutter disc, and the positioning mechanism can be lifted and lowered vertically.

[0007] Preferably, a central shaft is fixedly installed inside the cutter disc, and the central shaft passes through the cutter disc and is rotatably connected to the tool box. A transmission box is fixedly installed above the tool box, and a transmission mechanism is provided inside the transmission box. The transmission mechanism includes gear 1 and gear 2, and gear 1 is meshed with gear 2.

[0008] Preferably, a transmission shaft 1 is fixedly installed inside the gear 1, and the transmission shaft 1 passes through the gear 1, and the transmission shaft 1 is fixedly connected to the central shaft. A transmission shaft 2 is fixedly installed inside the gear 2, and the transmission shaft 2 passes through the gear 2, and the transmission shaft 2 is rotatably connected to the transmission box.

[0009] Preferably, a drive box is fixedly installed above the transmission box, an electric motor is provided inside the drive box, and an output end of the electric motor is fixedly connected to the second transmission shaft.

[0010] Preferably, a measuring box is fixedly installed in the middle below the tool box, an encoder is provided inside the measuring box, and an input end of the encoder is fixedly connected to the central axis.

[0011] Preferably, a stabilizing ring groove is provided on the lower end surface of the cutter disc, a stabilizing ring plate is provided inside the stabilizing ring groove, and the stabilizing ring plate passes through the interior of the cutter disc and is fixedly connected to the tool box.

[0012] Preferably, a protective cover is fixedly installed below the tool box, an electric cylinder is provided inside the protective cover, and a push rod end of the electric cylinder is fixedly connected to the transmission rod of the positioning mechanism.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model sets a positioning mechanism, and the positioning mechanism includes a transmission rod and a pressure plate. The positioning mechanism effectively suppresses the rotation of the cutter disc after it stops rotating through the close contact and friction between the pressure plate and the cutter disc, ensures the precise positioning of the tool at the replacement port, improves the accuracy and stability of tool replacement, thereby ensuring the accuracy and reliability of the subsequent processing process, and solves the problem that the tool cannot be accurately positioned and stopped due to the inertia effect when the tool is replaced.

[0015] 2. The utility model provides accurate position feedback during the tool replacement process through the setting of the encoder. Through the fixed connection with the central axis, the encoder can monitor the rotation angle of the cutter disc in real time, which helps to achieve accurate tool replacement. It can also perform real-time monitoring and adjustment during the replacement process to ensure the accuracy and reliability of the replacement.

[0016] 3. The utility model transmits power from the drive box to the cutter disc through the transmission mechanism, realizes remote control and adjustment of power, provides a stable and reliable power source for tool replacement, and the fixed connection between the transmission shaft 1 and the central shaft, and the rotating connection between the transmission shaft 2 and the transmission box constitute a solid foundation for the transmission path, enhance the overall stability of the transmission system, make power transmission more direct and efficient, reduce energy loss, and further improve the accuracy and efficiency of replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a replacement device for a high-precision CBN tool with a positioning structure according to the present invention;

[0018] Figure 2 This is a cross-sectional view of a replacement device for a high-precision CBN tool with a positioning structure according to the present invention;

[0019] Figure 3 It is an enlarged schematic diagram of part A of the present utility model;

[0020] Figure 4 It is a bottom view of the cutter disc of the present invention.

[0021] In the figure: 1. Tool box; 2. Cutter head; 201. Connecting ring groove; 202. Positioning ring cavity; 203. Stabilizing ring groove; 3. Cutter holder; 4. Cutter body; 5. Transmission box; 6. Drive box; 7. Center shaft; 8. Transmission mechanism; 9. Gear 1; 10. Gear 2; 11. Motor; 12. Measuring box; 13. Encoder; 14. Protective cover; 15. Electric cylinder; 16. Transmission rod; 17. Pressure plate; 18. Stabilizing ring plate. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-4 , the utility model provides an embodiment: a replacement device for a high-precision CBN tool with a positioning structure, comprising a tool box 1, a tool replacement mechanism is provided inside the tool box 1, and a replacement port is provided at the bottom of the tool box 1, the tool replacement mechanism comprises a cutter disc 2, a tool seat 3 and a tool body 4, a plurality of tool seats 3 are provided and fixedly installed on the outer side of the cutter disc 2, a plurality of tool bodies 4 are provided, and the tool bodies 4 are different CBN tools, the tool body 4 is installed on the tool seat 3, a connecting ring groove 201 is provided on the lower end surface of the cutter disc 2, a positioning ring cavity 202 is provided along the upper side of the connecting ring groove 201 inside the cutter disc 2, the connecting ring groove 201 is communicated with the positioning ring cavity 202, and a positioning mechanism is provided inside the positioning ring cavity 202, the positioning mechanism comprises a pressure plate 17 and a transmission rod 16, the lower end surface of the pressure plate 17 is roughened, the lower end of the transmission rod 16 passes through the connecting ring groove 201 and extends to the bottom of the cutter disc 2, and the positioning mechanism can be vertically lifted and moved.

[0024] During use, by driving the cutter disc 2 to rotate, the tool holder 3 with the tool body 4 on the outside can be driven to rotate, so that different tool bodies 4 can be rotated to the replacement port position, which is convenient for replacing the tool. By driving the positioning mechanism downward, the pressure plate 17 can be pressed on the cutter disc 2. Through contact friction, the cutter disc 2 can be prevented from rotating, which increases the position stability of the cutter disc 2 and realizes the positioning of the cutter disc 2, which is beneficial for the accurate replacement of the tool. Furthermore, by setting a positioning mechanism, the positioning mechanism effectively suppresses the rotation of the cutter disc 2 after the rotation stops through the close contact and friction between the pressure plate 17 and the cutter disc 2, ensuring the precise positioning of the tool at the replacement port position and improving the accuracy and stability of tool replacement.

[0025] Furthermore, a central shaft 7 is fixedly installed inside the cutter disc 2, and the central shaft 7 passes through the cutter disc 2 and is rotatably connected to the tool box 1. The central shaft 7 serves as the rotation core of the cutter disc 2, ensuring the smoothness and accuracy of the rotation movement. A transmission box 5 is fixedly installed above the tool box 1, and a transmission mechanism 8 is provided inside the transmission box 5. The transmission mechanism 8 includes gear 1 9 and gear 2 10, which are meshed and connected with gear 2 10. The diameter of gear 1 9 is larger than the diameter of gear 2 10, which is conducive to accurately driving the cutter disc 2 to rotate a certain angle. The power is transmitted from the drive box 6 to the cutter disc 2 through the transmission mechanism 8, thereby realizing remote control and adjustment of the power, providing a stable and reliable power source for tool replacement, and further improving the accuracy and efficiency of replacement.

[0026] Furthermore, a transmission shaft 1 is fixedly installed inside the gear 1 9, and the transmission shaft 1 passes through the gear 1 9. The transmission shaft 1 is fixedly connected to the central shaft 7. A transmission shaft 2 is fixedly installed inside the gear 2 10, and the transmission shaft 2 passes through the gear 2 10. The transmission shaft 2 is rotationally connected to the transmission box 5. The fixed connection between the transmission shaft 1 and the central shaft 7, and the rotational connection between the transmission shaft 2 and the transmission box 5 constitute a solid foundation for the transmission path, enhance the overall stability of the transmission system, make power transmission more direct and efficient, and reduce energy loss.

[0027] Furthermore, a drive box 6 is fixedly installed above the transmission box 5, and an electric motor 11 is provided inside the drive box 6. The electric motor 11 is fixedly connected to the drive box 6, and the output end of the electric motor 11 is fixedly connected to the transmission shaft 2, so that the electric motor 11 can drive the transmission shaft 2 as a power source, thereby driving the entire transmission mechanism to work.

[0028] Furthermore, a measuring box 12 is fixedly installed in the middle below the tool box 1, and an encoder 13 is provided inside the measuring box 12. The encoder 13 is fixedly connected to the tool box 1, and the input end of the encoder 13 is fixedly connected to the center shaft 7. The setting of the encoder 13 enables accurate position feedback to be provided during the tool replacement process. Through the fixed connection with the center shaft 7, the encoder can monitor the rotation angle of the tool disc 2 in real time, which helps to achieve accurate replacement of the tool. It can also perform real-time monitoring and adjustment during the replacement process to ensure the accuracy and reliability of the replacement.

[0029] Furthermore, a stabilizing ring groove 203 is provided on the lower end surface of the cutter disc 2, and a stabilizing ring plate 18 is provided inside the stabilizing ring groove 203. The stabilizing ring plate 18 passes through the interior of the cutter disc 2 and is fixedly connected to the tool box 1. The combination of the stabilizing ring groove 203 and the stabilizing ring plate 18 provides additional stability support for the cutter disc 2. During tool replacement or high-speed rotation, the stabilizing ring plate 18 can effectively prevent the cutter disc 2 from shaking and offset, ensure the accurate alignment and stable operation of the tool, and improve the accuracy and safety of tool replacement.

[0030] Furthermore, a protective cover 14 is fixedly installed under the tool box 1, and an electric cylinder 15 is arranged inside the protective cover 14. The electric cylinder 15 is fixedly connected to the tool box 1, and the push rod end of the electric cylinder 15 is fixedly connected to the transmission rod 16 of the positioning mechanism. The electric cylinder 15 serves as a driving source, and the vertical lifting and lowering movement of the positioning mechanism is realized through the fixed connection between the push rod end and the transmission rod 16, which not only simplifies the driving mode of the positioning mechanism, but also helps to improve the stability and reliability of the positioning mechanism. In addition, the setting of the protective cover 14 can prevent external factors from interfering with and damaging the positioning mechanism, thereby ensuring the smooth progress of the tool replacement process.

[0031] Working principle: When in use, the tool replacement mechanism is set up, and the cutter disc 2 is used to drive multiple tool holders 3 equipped with different CBN tools to rotate, so as to realize flexible selection and replacement of tools. When the tool needs to be replaced, the cutter disc 2 is rotated to a specific angle by controlling the transmission mechanism so that the target tool is aligned with the replacement port. At this time, the transmission rod 16 in the positioning mechanism is driven by the electric cylinder 15 to drive the pressure plate 17 to move downward. The pressure plate 17 is in close contact with the cutter disc 2 with its rough lower end surface and generates friction, which effectively prevents the cutter disc 2 from continuing to rotate due to inertia, thereby realizing precise positioning and stabilization of the cutter disc 2. At the same time, the encoder 13 monitors the rotation angle of the cutter disc 2 in real time, provides accurate position feedback, and ensures the accuracy and reliability of tool replacement.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A device for replacing high-precision CBN tools with a positioning structure, comprising a tool box (1), characterized in that: A tool replacement mechanism is provided inside the tool box (1), and the tool replacement mechanism includes a tool disc (2), a tool seat (3) and a tool body (4); a connecting ring groove (201) is provided on the lower end surface of the tool disc (2); a positioning ring cavity (202) is provided inside the tool disc (2) along the upper side of the connecting ring groove (201); a positioning mechanism is provided inside the positioning ring cavity (202); the positioning mechanism includes a pressure plate (17) and a transmission rod (16); the lower end of the transmission rod (16) passes through the connecting ring groove (201) and extends to the lower side of the tool disc (2); and the positioning mechanism can be vertically raised and lowered.

2. The high-precision CBN tool replacement device with a positioning structure according to claim 1, characterized in that: A central shaft (7) is fixedly installed inside the cutter disc (2), and the central shaft (7) passes through the cutter disc (2) and is rotatably connected to the tool box (1). A transmission box (5) is fixedly installed above the tool box (1), and a transmission mechanism (8) is provided inside the transmission box (5). The transmission mechanism (8) includes a gear 1 (9) and a gear 2 (10), and the gear 1 (9) is meshed with the gear 2 (10).

3. The high-precision CBN tool replacement device with a positioning structure according to claim 2, characterized in that: A transmission shaft 1 is fixedly installed inside the gear 1 (9), and the transmission shaft 1 passes through the gear 1 (9). The transmission shaft 1 is fixedly connected to the central shaft (7). A transmission shaft 2 is fixedly installed inside the gear 2 (10), and the transmission shaft 2 passes through the gear 2 (10). The transmission shaft 2 is rotationally connected to the transmission box (5).

4. The high-precision CBN tool replacement device with a positioning structure according to claim 3, characterized in that: A drive box (6) is fixedly installed above the transmission box (5), an electric motor (11) is provided inside the drive box (6), and an output end of the electric motor (11) is fixedly connected to the second transmission shaft.

5. The high-precision CBN tool replacement device with a positioning structure according to claim 2, characterized in that: A measuring box (12) is fixedly installed in the middle below the tool box (1), an encoder (13) is provided inside the measuring box (12), and an input end of the encoder (13) is fixedly connected to the central shaft (7).

6. The high-precision CBN tool replacement device with a positioning structure according to claim 1, characterized in that: A stabilizing ring groove (203) is provided on the lower end surface of the cutter disc (2), a stabilizing ring plate (18) is provided inside the stabilizing ring groove (203), and the stabilizing ring plate (18) passes through the interior of the cutter disc (2) and is fixedly connected to the tool box (1).

7. The high-precision CBN tool replacement device with a positioning structure according to claim 1, characterized in that: A protective cover (14) is fixedly installed below the tool box (1), an electric cylinder (15) is provided inside the protective cover (14), and a push rod end of the electric cylinder (15) is fixedly connected to a transmission rod (16) of a positioning mechanism.

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