Broken tool detection device of machine tool and machine tool

Abstract

The utility model relates to the field of machine tool cutter detection, in particular to a broken cutter detection device of a machine tool and the machine tool, the broken cutter detection device comprises an installation support and a broken cutter detection module, the installation support is installed on a tool magazine, the broken cutter detection module is installed on the installation support, and a beating rod is used for carrying out broken cutter detection by rotating and touching a cutter point of a cutter on the tool magazine. The mounting bracket is mounted on the tool magazine, so that the mounting bracket has higher stability compared with the mounting bracket mounted on a tool magazine protection metal plate, and the probability of inaccurate detection or failure of the broken tool detection device caused by vibration of a machine tool is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to lathe tool detection field, specifically, relate to a lathe broken tool detection device and lathe. BACKGROUND

[0002] In today's mechanical processing industry, broken tool detection is crucial to ensure production safety and improve production efficiency. In the prior art, non-contact laser broken tool detection is widely used because they can provide reliable and efficient broken tool detection function, for example, Chinese patent CN115890343B, in which the laser emitted by the laser sensor is reflected by the tool tip for broken tool detection. However, such detection devices have the problem of high cost, and have high requirements for installation and operating environment, especially for the detection of small tools and the stability in the vibration environment of the machine tool. Machine tool vibration can easily affect the detection result. In addition, since most of these devices are installed inside the machine tool, cutting fluid can easily contact them during machine tool processing. Long-term contact with cutting fluid poses a challenge to its service life and affects its service life.

[0003] On the contrary, some machine tools use contact broken tool detection devices installed on the tool magazine protective sheet metal or other sheet metal. Such devices are easy to install and have relatively low cost. However, due to the weak rigidity and poor shock resistance of the protective sheet metal, the environmental requirements are more stringent. Specifically, even a short period of improper installation adjustment or deformation of the protective sheet metal will significantly affect the accuracy of the broken tool detection result.

[0004] Based on the above, the broken tool detection devices in the prior art have advantages but also obvious shortcomings. Although non-contact laser detection has superior performance, it is complex to install, has high cost, and vibration can easily affect the detection result; while the contact detection device is easy to install and has low cost, its structural stability and environmental adaptability still need to be improved. Therefore, a broken tool detection device that has efficient detection function and simplifies installation and improves stability is needed to meet the actual needs of the modern mechanical processing industry for broken tool detection devices. SUMMARY

[0005] To solve the above problems, the purpose of the utility model is to provide a broken tool detection device for a machine tool and a machine tool to solve the above problems of the existing broken tool detection device.

[0006] The purpose of the utility model is achieved by the following technical solutions:

[0007] The utility model discloses a kind of broken tool detection devices of machine tool, machine tool includes tool magazine and machine tool control system, tool magazine is provided with multiple tool holders for installing tool, broken tool detection device includes: mounting bracket, is installed on tool magazine;Broken tool detection module, including fixed seat fixed on mounting bracket, rotation unit being rotationally arranged on fixed seat, the detection unit for detecting the rotation angle of rotation unit is set to the end of rotation unit, the detection plane is rotated in the preset detection plane by rotation unit around fixed seat, the mounting axis of at least one tool holder of tool magazine is located in the preset detection plane;Wherein, detection unit is communicatively connected with machine tool control system, for when the tip of tool is contacted by the detection of the detection plane, the rotation angle of rotation unit is fed back, machine tool control system is used to receive rotation angle, and output broken tool detection result signal.

[0008] In an embodiment, the broken tool detection module is installed on the tool magazine through the mounting bracket position-adjustable, the extension direction of the detection rod is perpendicular to the rotation axis of the rotation unit and the axis direction of the tool, the machine tool control system includes an alarm module, and the alarm module is used to alarm when the machine tool control system judges that the tool is broken.

[0009] In an embodiment, the machine tool control system stores the standard rotation angle of the rotation unit corresponding to the tool installed on each tool holder of the tool magazine, and the machine tool control system is used to compare the received real-time rotation angle with the standard rotation angle to obtain the broken tool detection result signal.

[0010] In an embodiment, the machine tool control system stores the standard length of the tool installed on each tool holder of the tool magazine, and the machine tool control system is used to obtain the real-time length of the tool according to the received real-time rotation angle and the distance between the broken tool detection module and the tool to obtain the broken tool detection result signal.

[0011] In an embodiment, the mounting bracket includes:

[0012] The tool magazine bracket is installed on the tool magazine position-adjustable;

[0013] The intermediate bracket is installed on the tool magazine bracket position-adjustable along the X-axis direction and the Z-axis direction;

[0014] The detection bracket is arranged on the intermediate bracket position-adjustable along the Y-axis direction, and the fixed seat is installed on the detection bracket.

[0015] In an embodiment, the tool magazine bracket is an L-shaped mounting plate, and the mounting plate includes a first horizontal plate and a first vertical plate perpendicular to the first horizontal plate, a plurality of first fastening holes are arranged on the first horizontal plate along the X-axis direction, and a plurality of second fastening holes are arranged on the first vertical plate along the Z-axis direction.

[0016] The intermediate support comprises a second transverse plate and a second vertical plate perpendicular to the second transverse plate, and the second vertical plate is provided with a third fastening hole, and the second transverse plate is provided with a plurality of fourth fastening holes in the Y-axis direction;

[0017] The detection support comprises a third transverse plate and a third vertical plate perpendicular to the third transverse plate, the third transverse plate is provided with a fifth fastening hole, the third vertical plate is provided with a sixth fastening hole, and the fixing seat is provided with a seventh fastening hole;

[0018] The mounting support further comprises a first fastener, a second fastener, a third fastener and a fourth fastener, the tool magazine support is inserted into the first fastening hole to the tool magazine through the first fastener so as to be mounted on the tool magazine, the intermediate support is inserted into the second fastening hole and the third fastening hole through the second fastener so as to be mounted on the tool magazine support, the detection support is inserted into the fourth fastening hole and the fifth fastening hole through the third fastener so as to be mounted on the intermediate support, and the fixing seat is inserted into the sixth fastening hole and the seventh fastening hole through the fourth fastener so as to be mounted on the detection support.

[0019] In an embodiment, the fifth fastening hole is provided in a waist-shaped structure hole with the length along the Y-axis direction, and / or the sixth fastening hole is provided in a waist-shaped structure hole with the length along the X-axis direction.

[0020] In an embodiment, the first vertical plate is provided with a first sliding rail, and the second vertical plate is movably arranged on the first sliding rail; the second transverse plate is provided with a second sliding rail, and the third transverse plate is movably arranged on the second sliding rail.

[0021] The utility model discloses still provide a kind of machine tool, including machine tool body, tool magazine and machine tool control system being set on machine tool body, tool magazine is provided with a plurality of tool holder for installing tool, further include the broken tool detection device of any one machine tool described above, and the broken tool detection device is installed on tool magazine.

[0022] In an embodiment, the tool magazine comprises a tool magazine body and a tool holder rotatably arranged on the tool magazine body, and the mounting support is arranged at the middle portion of the tool magazine body, and the rotation axis of the rotating unit is parallel to the rotation plane of the tool holder.

[0023] The utility model has the beneficial effects that: the mounting support is installed on the tool magazine, the broken tool detection module is installed on the mounting support, and the rod is used to detect the broken tool by rotating and touching the tool tip of the tool on the tool magazine. Compared with being installed on the protective sheet metal of the tool magazine, the mounting support has higher stability, and the probability of inaccurate detection or failure of the broken tool detection device caused by vibration of the machine tool is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application, the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0025] Figure 1 is an assembly schematic view of the broken tool detection device of the present application;

[0026] Figure 2 is an explosion schematic view of the broken tool detection device of the present application;

[0027] Figure 3 is a detection principle schematic view of the broken tool detection device of the present application.

[0028] In which the reference signs are:

[0029] 1-mounting bracket, 11-tool magazine bracket, 111-first horizontal plate, 112-first vertical plate, 113-first fastening hole, 114-second fastening hole;

[0030] 12-intermediate bracket, 121-second horizontal plate, 122-second vertical plate, 123-third fastening hole, 124-fourth fastening hole;

[0031] 13-detection bracket, 131-third horizontal plate, 132-third vertical plate, 133-fifth fastening hole, 134-sixth fastening hole;

[0032] 2-broken tool detection module, 21-fixing seat, 22-rotary unit, 23-patting rod, 24-detection unit, 25-seventh fastening hole;

[0033] 3-tool magazine, 31-tool magazine body, 32-tool clamp;

[0034] 4-tool;

[0035] 5-first fastener, 6-second fastener, 7-third fastener, 8-fourth fastener;

[0036] 9-machine tool control system, 91-alarm module. DETAILED DESCRIPTION

[0037] In order to make the person in the technical field better understand the present application scheme, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0038] See also Figures 1 to 3 , one aspect of the present invention provides a broken tool detection device for a machine tool, the machine tool includes a tool magazine 3 and a machine tool control system 9, a plurality of tool clamps 32 for mounting a tool 4 are provided on the tool magazine 3, the broken tool detection device includes a mounting bracket 1 and a broken tool detection module 2, the mounting bracket 1 is installed on the tool magazine 3; the broken tool detection module 2 includes a fixed seat 21 fixed on the mounting bracket 1, a rotating unit 22 rotatably arranged on the fixed seat 21, a racket 23 arranged at the end of the rotating unit 22 and a detection unit 24 for detecting the rotation angle of the rotating unit 22, the racket 23 rotates around the fixed seat 21 in a preset detection plane through the rotating unit 22, and the installation axis of at least one tool clamp 32 of the tool magazine 3 is located in the preset detection plane; wherein the detection unit 24 is communicatively connected to the machine tool control system 9, and is used to feedback the rotation angle of the rotating unit 22 when the racket 23 contacts the tip of the tool 4, and the machine tool control system 9 is used to receive the rotation angle and output a broken tool detection result signal.

[0039] In the present invention, a mounting bracket 1 is mounted on a tool magazine 3, a tool breakage detection module 2 is mounted on the mounting bracket 1, and a slap bar 23 is used to detect tool breakage by rotating to contact the tip of a tool 4 on the tool magazine 3. Mounting the mounting bracket 1 on the tool magazine 3 provides greater stability than mounting it on the protective sheet metal of the tool magazine 3, thereby reducing the probability of failure of the tool breakage detection device due to vibration of the machine tool.

[0040] The broken tool detection device can effectively detect the breakage of the tool 4 during the machining process of the machine tool, ensuring the safety and accuracy of the machining. Specifically, the broken tool detection device fixes the broken tool detection module 2 by means of a mounting bracket 1 installed on the tool magazine 3. The broken tool detection module 2 includes a rotating unit 22 that rotates around a fixed seat 21, and a clapper 23 connected to the rotating unit 22, and the clapper 23 can rotate freely within a preset detection plane. When the tool 4 breaks and shifts, the clapper 23 contacts the tool tip, and the rotation angle of the rotating unit 22 changes. The detection unit 24 monitors this change in real time and feeds back to the machine tool control system 9 to know whether the current tool 4 is broken.

[0041] In one embodiment, reference Figures 1 to 3, the broken tool detection module 2 is installed on the tool magazine 3 through the adjustable mounting bracket 1, the extension direction of the knocking rod 23 is perpendicular to the rotation axis of the rotating unit 22 and the axis direction of the tool 4, and the machine tool control system 9 comprises an alarm module 91, which is used for alarming when the machine tool control system 9 judges that the tool is broken. Specifically, when the broken tool detection needs to be performed, the knocking rod 23 rotates in the preset detection plane until the tool tip of the tool 4 is contacted. At this time, the rotating unit 22 rotates, and the detection unit 24 can detect the rotation angle of the rotating unit 22 in real time. The detection unit 24 is in communication connection with the machine tool control system 9, and the detected rotation angle of the rotating unit 22 is fed back to the machine tool control system 9. When the machine tool control system 9 judges that the tool is broken, the alarm module 91 contained in the machine tool control system 9 will alarm. The alarm mode can be to issue an audible and light alarm signal, for example, to flash an indicator light on the machine tool operation panel and issue a buzzing sound, so as to remind the operator to handle the broken tool in time, so as to avoid affecting the normal operation of the machine tool and the machining quality.

[0042] In one embodiment, reference is made to Figures 1 to 3 The machine tool control system 9 stores the standard rotation angle of the rotating unit 22 corresponding to the tool 4 installed on each tool holder 32 of the tool magazine 3, and the standard length can be obtained through pre-measurement and calibration. The machine tool control system 9 is used to compare the received real-time rotation angle with the standard rotation angle to obtain a broken tool detection result signal.

[0043] The machine tool control system 9 stores the standard length of the tool 4 installed on each tool holder 32 of the tool magazine 3, and the machine tool control system 9 is used to obtain the real-time length of the tool 4 according to the received real-time rotation angle and the distance between the broken tool detection module 2 and the tool 4 to obtain a broken tool detection result signal.

[0044] The following is a specific description of the broken tool judgment based on the standard rotation angle and the broken tool judgment based on the length calculation of the tool 4:

[0045] Specific description of the broken tool judgment based on the standard rotation angle:

[0046] The machine tool control system 9 pre-stores the standard rotation angle of the rotating unit 22 corresponding to the tool 4 installed on each tool holder 32 of the tool magazine 3. These standard rotation angles are obtained through pre-detection and calibration when the tool 4 is complete and in a normal installation state.

[0047] After receiving the real-time rotation angle fed back by the detection unit 24, the machine tool control system 9 compares the real-time rotation angle with the standard rotation angle of the corresponding tool 4 pre-stored. If there is a significant difference (for example, exceeding the set error range) between the real-time rotation angle and the standard rotation angle, the machine tool control system 9 judges that the tool may be broken, and outputs a broken tool detection result signal.

[0048] Specific description of broken tool judgment based on tool 4 length calculation:

[0049] The machine tool control system 9 stores the standard length of the tool 4 installed on each tool holder 32 of the tool magazine 3. These standard lengths can be obtained through pre-measurement and calibration. The machine tool control system 9 calculates the real-time length of the tool 4 according to the received real-time rotation angle, the distance between the broken tool detection module 2 and the tool 4, and other information, according to a specific algorithm. Then compare the calculated real-time length with the pre-stored standard length of the corresponding tool 4, if there is a significant difference (such as exceeding the set error range), it is judged that the tool may be broken, and the broken tool detection result signal is output.

[0050] In the broken tool detection device of the present application, after the control system receives the rotation angle signal, it is compared with the pre-stored standard angle, and when it exceeds the preset range, it is judged as a broken tool, and timely alarm is given through the alarm module 91, thereby avoiding production accidents and product quality problems caused by broken tools. In addition, the device also supports the configuration of different tool 4 standard lengths and detection heights, and measures the real-time tool 4 length, further improving the accuracy and reliability of the broken tool detection. Through such design, the device can flexibly adjust the installation position and provide comprehensive safety protection, improving the stability and processing efficiency of the machine tool.

[0051] In one embodiment, referring to Figure 1 and Figure 2 , the mounting bracket 1 includes a tool magazine bracket 11, an intermediate bracket 12, and a detection bracket 13, wherein the tool magazine bracket 11 is adjustably mounted on the tool magazine 3; the intermediate bracket 12 is adjustably mounted on the tool magazine bracket 11 along the X-axis direction and the Z-axis direction; the detection bracket 13 is adjustably arranged on the intermediate bracket 12 along the Y-axis direction, and the fixing seat 21 is mounted on the detection bracket 13. Specifically, the broken tool detection module 2 is mounted on the detection bracket 13. In actual use, the tool magazine bracket 11 is an adjustable component, which can be mounted on the tool magazine 3 of the machine tool, so that the position of the mounting bracket 1 as a whole relative to the tool magazine 3 can be adjusted along the X-axis direction and the Z-axis direction as needed. The position of the mounting bracket 1 can not only be adjusted in the X-axis direction, but also in the Z-axis direction, enhancing the flexibility and adaptability of the device. In addition, the detection bracket 13 can adjust the position in the Y-axis direction, ensuring the accuracy and adaptability during the detection process. At the same time, the fixing seat 21 is mounted on this detection bracket 13, indicating that the position of the fixing seat 21 can be adjusted to a suitable position according to the detection requirements, so as to better implement the broken tool detection function.

[0052] Further, in a specific embodiment, referring to Figure 1 and Figure 2The tool magazine support 11 is L-shaped, comprising a first horizontal plate 111 and a first vertical plate 112 perpendicular to the first horizontal plate 111. A plurality of first fastening holes 113 are arranged on the first horizontal plate 111 along the X-axis direction, for installing and adjusting the position of the tool magazine support 11. Specifically, a hole is arranged on the tool magazine 3 to match the first fastening hole 113, and the first vertical plate 112 is adjusted so that the hole at the appropriate position on the first vertical plate 112 matches the hole on the tool magazine 3, to adjust the position of the tool magazine support 11. A plurality of second fastening holes 114 are arranged on the first vertical plate 112 along the Z-axis direction, for installing and adjusting the position of the intermediate support 12. The structure of the tool magazine support 11 can also be a direction plate structure, in which the second fastening holes 114 are arranged in a row on the direction plate, so that the intermediate support can be adjusted in position along the X-axis direction and the Y-axis direction.

[0053] The intermediate support 12 comprises a second horizontal plate 121 and a second vertical plate 122 perpendicular to the second horizontal plate 121, and the second vertical plate 122 is provided with third fastening holes 123, and the second horizontal plate 121 is provided with a plurality of fourth fastening holes 124 along the Y-axis direction;

[0054] The detection support 13 comprises a third horizontal plate 131 and a third vertical plate 132 perpendicular to the third horizontal plate 131, and the third horizontal plate 131 is provided with fifth fastening holes 133, and the third vertical plate 132 is provided with sixth fastening holes 134, and the fixing seat 21 is provided with seventh fastening holes 25. The fixing seat 21 is installed on the detection support 13.

[0055] In order to fix the parts of the mounting support 1 in place, with reference to Figure 1 and Figure 2 , the mounting support 1 further comprises:

[0056] The first fastening member 5 is used to install the tool magazine support 11 in the tool magazine 3, and the installation is achieved by inserting the first fastening member 5 into the first fastening hole 113. Specifically, the first fastening member 5 is aligned with the hole on the tool magazine 3, and the first fastening member 5 is inserted into the first fastening hole 113 to install the tool magazine support 11 on the tool magazine 3. When it is necessary to adjust the position of the tool magazine support 11, another first fastening hole 113 of the tool magazine support 11 is aligned with the hole on the tool magazine 3, and then the first fastening member 5 is inserted to achieve the position adjustment.

[0057] Second fastener 6: used for installing the intermediate support 12 on the tool magazine support 11, the installation is achieved by inserting the second fastener 6 into the second fastening hole 114 and the third fastening hole 123. Specifically, the third fastening hole 123 on the intermediate support 12 is aligned with the second fastening hole 114 on the tool magazine support 11, and then the second fastener 6 is inserted into the second fastening hole 114 and the third fastening hole 123 to install the intermediate support 12 on the tool magazine support 11. When the position of the intermediate support 12 needs to be adjusted, the third fastening hole 123 is aligned with other second fastening holes 114, and then the second fastener 6 is inserted for fastening to achieve position adjustment.

[0058] Third fastener 7: used for installing the detection support 13 on the intermediate support 12, the installation is achieved by inserting the third fastener 7 into the fourth fastening hole 124 and the fifth fastening hole 133. Specifically, a plurality of fourth fastening holes 124 are arranged on the second transverse plate 121 along the Y-axis direction, and the fifth fastening hole 133 of the detection support 13 is aligned with the fourth fastening hole 124, and then the third fastener 7 is inserted into the fourth fastening hole 124 and the fifth fastening hole 133. Similarly, when the position of the detection support 13 needs to be adjusted, the fifth fastening hole 133 is paired with other fourth fastening holes 124. In addition, the fifth fastening hole 133 is provided as a waist-shaped structure hole with the length along the Y-axis direction, which makes the fifth fastening hole 133 not need to be paired with other fourth fastening holes 124 to adjust the position. That is, when the position needs to be adjusted, the third fastener 7 is loosened, and then the detection support 13 is moved along the Y-axis direction, and the waist-shaped fifth fastening hole 133 provides a moving space for the third fastener 7, which makes the position adjustment of the detection support 13 more convenient.

[0059] Fourth fastener 8: used for installing the fixed seat 21 on the detection support 13, the installation is achieved by inserting the fourth fastener 8 into the sixth fastening hole 134 and the seventh fastening hole 25 on the fixed seat 21. The fixed seat 21 is installed on the detection support 13 by inserting the fourth fastener 8 into the sixth fastening hole 134 and the seventh fastening hole 25. The sixth fastening hole 134 is a waist-shaped structure hole with the length along the X-axis direction, when the position of the broken tool detection module 2 relative to the intermediate support 12 needs to be adjusted, the fourth fastener 8 is loosened, and then the fixed seat 21 is moved along the Y-axis direction, and the waist-shaped fifth fastening hole 133 provides a moving space for the fourth fastener 8, which makes the position adjustment of the detection support 13 more convenient.

[0060] The intermediate support 12 is mounted on the tool magazine support 11, the position of the intermediate support 12 can be adjusted along the X-axis direction and the Z-axis direction, and the position of the broken tool detection module 2 can be adjusted along the Y-axis direction, through the multi-level and multi-dimensional adjustment mechanism, the broken tool detection device can meet different working requirements and installation conditions, the detection flexibility of the broken tool detection module 2 is greatly increased, and the adaptability and practicality in different application scenarios are improved.

[0061] In one embodiment, referring to Figure 1 and Figure 2 , the first vertical plate 112 is provided with a first sliding rail (not shown in the figure), and the second vertical plate 122 is movably arranged on the first sliding rail; the second horizontal plate 121 is provided with a second sliding rail (not shown in the figure), and the third horizontal plate 131 is movably arranged on the second sliding rail. When it is necessary to adjust the position of the intermediate support 12, the second fastener 6 is taken down, the first vertical plate 112 can slide along the first sliding rail, and the first sliding rail is arranged to provide a guide function for the movement of the first vertical plate 112, and along the guide rail, the movement of the first vertical plate 112 is more convenient. When it is necessary to adjust the position of the detection support 13, the third fastener 7 is taken down, and then the detection support 13 is moved along the second guide rail, and the principle is the same as that of the intermediate support 12 along the first guide rail, which will not be repeated here.

[0062] Referring to Figure 1 and Figure 2 , the utility model discloses another aspect provides a machine tool, including machine tool body, set up on machine tool body on tool magazine 3 and machine tool control system 9, be provided with a plurality of for installing tool 4 tool holder 32 on tool magazine 3, still include any one machine tool of above-mentioned broken tool detection device of item, and the broken tool detection device is installed on tool magazine 3.

[0063] The broken tool detection device is installed on the tool magazine 3, so that the machine tool has a device capable of detecting a broken tool in addition to the general mechanical structure, to ensure the safety and reliability in the machining process. In the overall implementation of the machine tool including the machine tool body and the broken tool detection device, first, install the broken tool detection device on the tool magazine 3 according to the above steps. The tool magazine 3 of the machine tool body is provided with a plurality of tool holders 32 for mounting the tools 4, and the tools 4 are normally mounted in the tool holders 32. According to the needs, start the broken tool detection device for broken tool detection according to the set detection period or at a certain time before and after the machining process, and the machine tool control system 9 processes according to the detection results, such as judging whether the tool is broken and alarming when the tool is broken, to ensure the safety and reliability of the machine tool machining.

[0064] In an embodiment, referring to the figure, the tool magazine 3 comprises a tool magazine body 31 and a tool holder 32 rotatably arranged on the tool magazine body 31, the mounting support 1 is arranged at the middle part of the tool magazine body 31, the rotation axis of the rotating unit 22 is parallel to the rotation plane of the tool holder 32, so that when the rotating unit 22 rotates, the clapper 23 can be turned to the tool tip of the tool 4.

[0065] The above is only the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A broken tool detection device for a machine tool, said machine tool comprising a tool magazine (3) provided with a plurality of tool holders (32) for mounting tools (4) and a machine tool control system (9), characterized in that, The broken tool detection device comprises: a mounting bracket (1) mounted on the tool magazine (3); a broken tool detection module (2) comprising a fixing seat (21) fixed on the mounting bracket (1), a rotating unit (22) rotatably arranged on the fixing seat (21), a knocking rod (23) arranged at the end of the rotating unit (22), and a detection unit (24) for detecting the rotation angle of the rotating unit (22), wherein the knocking rod (23) rotates around the fixing seat (21) in a preset detection plane through the rotating unit (22), and the mounting axis of at least one tool holder (32) of the tool magazine (3) is located in the preset detection plane; wherein the detection unit (24) is in communication connection with the machine tool control system (9), and is used for feeding back the rotation angle of the rotating unit (22) when the knocking rod (23) contacts the tool tip of the tool (4), and the machine tool control system (9) is used for receiving the rotation angle and outputting a broken tool detection result signal.

2. The broken tool detection device of the machine tool according to claim 1, characterized by The broken tool detection module (2) is mounted on the tool magazine (3) through the mounting bracket (1) which is adjustable in position, the extension direction of the knocking rod (23) is perpendicular to the rotation axis of the rotating unit (22) and the axis direction of the tool (4), and the machine tool control system (9) comprises an alarm module (91) which is used for alarming when the machine tool control system (9) judges that the tool is broken.

3. The tool breakage detection device of claim 1, wherein The machine tool control system (9) stores the standard rotation angle of the rotating unit (22) corresponding to the tool (4) mounted on each tool holder (32) of the tool magazine (3), and the machine tool control system (9) is used for comparing the received real-time rotation angle with the standard rotation angle to obtain a broken tool detection result signal.

4. The broken tool detection device of claim 1, wherein The machine tool control system (9) stores the standard length of the tool (4) mounted on each tool holder (32) of the tool magazine (3), and the machine tool control system (9) is used for obtaining the real-time length of the tool (4) according to the received real-time rotation angle and the distance between the broken tool detection module (2) and the tool (4) to obtain a broken tool detection result signal.

5. The broken tool detection device of a machine tool according to any one of claims 1 to 4, characterized in that, The mounting bracket (1) comprises: a tool magazine bracket (11) mounted on the tool magazine (3) in an adjustable position; an intermediate bracket (12) mounted on the tool magazine bracket (11) in a position adjustable along the X-axis direction and the Z-axis direction; a detection bracket (13) arranged on the intermediate bracket (12) in a position adjustable along the Y-axis direction, and the fixing seat (21) is mounted on the detection bracket (13).

6. The tool breakage detection device of claim 5, wherein The tool magazine bracket (11) is an L-shaped mounting plate comprising a first horizontal plate (111) and a first vertical plate (112) perpendicular to the first horizontal plate (111), a plurality of first fastening holes (113) are arranged on the first horizontal plate (111) along the X-axis direction, and a plurality of second fastening holes (114) are arranged on the first vertical plate (112) along the Z-axis direction; The intermediate support (12) comprises a second transverse plate (121) and a second vertical plate (122) perpendicular to the second transverse plate (121), and the second vertical plate (122) is provided with a third fastening hole (123), and the second transverse plate (121) is provided with a plurality of fourth fastening holes (124) along the Y-axis direction; The detection support (13) comprises a third transverse plate (131) and a third vertical plate (132) perpendicular to the third transverse plate (131), and the third transverse plate (131) is provided with a fifth fastening hole (133), and the third vertical plate (132) is provided with a sixth fastening hole (134), and the fixing seat (21) is provided with a seventh fastening hole (25); The mounting support (1) further comprises a first fastener (5), a second fastener (6), a third fastener (7) and a fourth fastener (8), the tool magazine support (11) is inserted into the tool magazine (3) through the first fastener (5) of the first fastening hole (113) to install the tool magazine support (11) on the tool magazine (3); the intermediate support (12) is inserted into the second fastening hole (114) and the third fastening hole (123) through the second fastener (6) to install the intermediate support (12) on the tool magazine support (11); the detection support (13) is inserted into the fourth fastening hole (124) and the fifth fastening hole (133) through the third fastener (7) to install the detection support (13) on the intermediate support (12); and the fixing seat (21) is inserted into the sixth fastening hole (134) and the seventh fastening hole (25) through the fourth fastener (8) to install the fixing seat (21) on the detection support (13).

7. The tool breakage detection device of claim 6, wherein The fifth fastening hole (133) is provided as a waist-shaped structure hole with the length along the Y-axis direction; and / or, The sixth fastening hole (134) is a waist-shaped structure hole with the length along the X-axis direction.

8. The tool breakage detection device of claim 7, wherein The first vertical plate (112) is provided with a first sliding rail, and the second vertical plate (122) is movably arranged on the first sliding rail; the second transverse plate (121) is provided with a second sliding rail, and the third transverse plate (131) is movably arranged on the second sliding rail.

9. A machine tool comprising a machine tool body, a tool magazine (3) provided on the machine tool body and a machine tool control system (9), the tool magazine (3) being provided with a plurality of tool holders (32) for mounting a tool (4), characterized in that The broken tool detection device of any one of claims 1-8 is further included, and the broken tool detection device is installed on the tool magazine (3).

10. Machine tool according to claim 9, characterized in that The tool magazine (3) comprises a tool magazine body (31) and a tool holder (32) rotatably arranged on the tool magazine body (31), the mounting support (1) is arranged at the middle part of the tool magazine body (31), and the rotation axis of the rotating unit (22) is parallel to the rotation plane of the tool holder (32). The tool magazine (3) comprises a tool magazine body (31) and a tool holder (32) rotatably arranged on the tool magazine body (31), the mounting support (1) is arranged at the middle part of the tool magazine body (31), and the rotation axis of the rotating unit (22) is parallel to the rotation plane of the tool holder (32).

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