Tool magazine detection device and machine tool

Abstract

The utility model discloses a tool magazine detection device and a machine tool, which comprise a tool magazine, the tool magazine is provided with a tool base for bearing tools, the tool base is provided with tool positions for arranging the tools in an array mode, and the tool magazine detection device further comprises sensors arranged corresponding to each row or each column of the tools on the tool base. The sensor is located above the tool base and can move relative to the tool base so that the sensor can detect whether a tool exists in each tool position of the row or the column of tools on the tool base or not when the sensor passes through the position above the row or the column of tools on the tool base. Due to the fact that only one sensor is arranged in each row or each column, and the relative movement path mode exists between the sensor and the tool base, the single sensor can detect whether tools exist in one row or one column of tool positions or not, and under the condition that it is guaranteed that each tool position in the tool magazine can be detected in place, the tool can be accurately detected. The use of sensors is greatly reduced, the detection cost is reduced, and the circuit arrangement is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool equipment, in particular to a tool magazine detection device and a machine tool. Background Art

[0002] The straight tool magazine is to lay out the tools in the tool magazine, and push all the tools out through the drive mechanism and supply them to a single spindle or multiple spindles for tool change. The working method and structure of this straight tool magazine are relatively simple. The structure of single-spindle and multi-spindle machine tools is basically the same, and only the volume of the tool magazine needs to be increased.

[0003] In actual use, the straight tool magazine needs to add detection devices. For example, when the operator puts the tools in the tool magazine, he puts the tools in tool positions 1, 2, 3, and 4, but forgets that there is a tool in position 4 when entering the program. If the tool on the spindle is returned to position 4 later, the tool magazine will collide with the machine. Therefore, the existing tool magazine needs to set sensors on each tool position for error prevention, and the tool magazine is not allowed to return the tool when there is a tool in the tool position.

[0004] Therefore, the number of detection sensors usually needs to be increased according to the number of tools in the traditional tool magazine. The use of a large number of sensors makes the location layout of sensors and the layout of control circuits in the tool magazine very complicated. In addition, the cutting fluid, water mist and dust in the machine tool are extremely large. Therefore, after a period of use, the aging maintenance of sensors is also a major problem of the straight-row tool magazine. Utility Model Content

[0005] The utility model provides a tool magazine detection device and a machine tool to solve the above problems.

[0006] The utility model provides a tool magazine detection device, comprising a tool magazine, wherein the tool magazine has a tool seat for carrying tools, the tool seat has tool positions for arranging tools in an array, and further comprising a sensor arranged corresponding to each row or each column of tools on the tool seat, wherein the sensor is located above the tool seat and can be displaced relative to the tool seat so that when the sensor passes over the row or the column of tools on the tool seat, it can detect whether there is a tool on each tool position of the row or the column of tools on the tool seat.

[0007] Preferably, the tool magazine also includes a first longitudinal track arranged on the machine tool bed, the sensor is fixedly installed relative to the bed, the tool seat is installed on the first longitudinal track and is driven by a tool magazine drive unit to move along the first longitudinal track, the tool seat arranges the tools in rows along the longitudinal direction, and there is a sensor above each row of tools on the tool seat. When the tool magazine drive unit drives the tool seat to move along the first longitudinal track and passes through the sensor above, the sensor above the corresponding row of tools detects whether there are tools in all tool positions of the row of tools.

[0008] Preferably, the tool magazine is located on the rear side of the bed, and the front side of the bed is the processing area. The processing area is provided with a second longitudinal track, and a movable workbench is provided on the second longitudinal track and is driven by a workbench driving unit to move along the second longitudinal track. Two parallel bosses are provided on the longitudinal upper edge of the bed, and the first longitudinal track and the second longitudinal track share the two bosses. A drive installation groove for accommodating the tool magazine drive unit and the workbench drive unit is formed between the two bosses, and a common protective cover is provided on the outside of the drive installation groove to protect the tool magazine drive unit and the workbench drive unit.

[0009] Preferably, the number of tool position rows arranged on the tool seat is a positive integer multiple of the number of machining spindles of the machine tool.

[0010] Preferably, the tool seat comprises a sliding seat and a carrying plate detachably arranged on the sliding seat, a tool position for accommodating a tool is arranged on the carrying plate, and the sliding seat is slidably mounted on the first longitudinal track.

[0011] Preferably, bearing plates corresponding one to one with the machining spindles of the machine tool are arranged on the sliding seat, and the center spacing between the bearing plates installed on the sliding seat corresponds to the center spacing between the machining spindles of the machine tool.

[0012] Preferably, the number of vertical columns of tool positions arranged on a single carrier plate is less than the number of horizontal rows of tool positions.

[0013] Preferably, a plurality of tool position blocks are detachably mounted on the carrier plate, each tool position block is provided with a tool position, and the tool position blocks are distributed on the carrier plate in an array.

[0014] Preferably, the outer contour of the tool block is a square, and the tool blocks are neatly arranged vertically and horizontally on the carrier plate.

[0015] Preferably, a tool magazine guard is provided at the rear side of the bed, the front side of the tool magazine guard is opened to form a magazine door, and a door panel is fixedly installed on the front side of the tool seat to form a closable fit with the magazine door. When the tool magazine drive unit drives the tool seat into the tool magazine guard, the door panel closes the magazine door.

[0016] Preferably, the sensor is located inside the tool magazine shield and above one side of the magazine door.

[0017] Preferably, it also includes mounting bars for mounting sensors, the number of which is consistent with the number of machining spindles of the machine tool, and each mounting bar is provided with a sensor corresponding to a corresponding column of tool positions on a tool holder below the mounting bar.

[0018] Preferably, the mounting bar is provided with a long hole extending in the transverse direction or mounting holes arranged in the transverse direction for adjusting the position of the sensor mounted on the mounting bar.

[0019] Preferably, a convex strip extending in the transverse direction is installed on the rear side of the door panel, a mounting slot hole is arranged vertically on the convex strip, a mounting hole matching the mounting slot hole is arranged at the front end of the tool seat, the convex strip overlaps with the front end portion of the tool seat and bolts are passed through the mounting slot hole on the convex strip and the mounting hole on the tool seat to fix the tool storage door in front of the tool seat.

[0020] Preferably, the tool seat is located at a specific position on the bed, a sensor track extending laterally or longitudinally is arranged above the tool seat, a sensor slider is arranged on the sensor track, the sensor is installed on the sensor slider, and the sensor driving unit drives the sensor slider to move along the sensor track.

[0021] Preferably, the sensor is a proximity inductive sensor, and when the tool on the tool holder and the proximity inductive sensor approach each other during relative movement, the proximity inductive sensor outputs a specific signal.

[0022] Preferably, a gantry for mounting the machining spindle is provided on the bed, and the sensor is installed below the gantry; or an independent mounting beam and gantry are provided on the bed, the mounting beam is located between the tool magazine and the gantry, and the sensor is installed on the mounting beam.

[0023] The utility model also provides a machine tool, comprising a bed, a movable workbench and a processing spindle arranged on the bed, and also comprising the above-mentioned tool magazine detection device.

[0024] It can be seen from the above technical scheme that, since the utility model adopts only one sensor for each row or column, and combines the path mode of relative movement between the sensor and the tool holder, a single sensor can detect the presence or absence of tools on a row or column of tool positions, while ensuring that each tool position in the tool magazine can be detected in place, the use of sensors is greatly reduced, the detection cost is reduced, and the line layout is optimized. In addition, it is also possible to further use the motion path of the straight tool magazine itself to match the detection path of the sensor, reduce the use of the drive mechanism in the detection process, further save costs, and optimize the bed space occupancy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of a machine tool provided by an embodiment of the utility model;

[0027] Figure 2 This is a structural schematic diagram of the tool magazine detection device of the new embodiment of the present invention installed on the bed;

[0028] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part A in the middle. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example:

[0031] The utility model embodiment provides a machine tool, combined with Figures 1 to 3 As shown, the machine tool includes a bed 1, a movable worktable 2 arranged on the bed 1 and a machining spindle 3. A gantry 4 is arranged on the bed. The machining spindle 3 is installed on the gantry 4 and can move horizontally and vertically in front of the gantry, and cooperates with the movable worktable 2 to move longitudinally on the bed, thereby realizing the processing of the XYZ three-axis system. In this embodiment, in order to facilitate the understanding of the technical solution, the X-axis direction is defined to correspond to the horizontal direction, the Y-axis direction corresponds to the longitudinal direction, and the Z-axis direction corresponds to the vertical direction, as a reference.

[0032] The machine tool also includes a tool magazine detection device, which includes a tool magazine 5, the tool magazine 5 has a tool seat for carrying a tool 9, and the tool seat has tool positions for arranging the tools in an array. Here, the array includes the tool positions arranged in one or more columns, and the row spacing of each column is not required; or the tool positions are arranged in one or more rows, and the row spacing of each row is not required, mainly forming an arrangement path in the column direction (longitudinal) or row direction (transverse). The tool magazine detection device also includes a sensor set corresponding to each row or column of tools on the tool seat, that is, if the tool positions are arranged in columns, one column of tool positions corresponds to one sensor, and two columns of tool positions correspond to two sensors. If the tool positions are arranged in rows, one row of tool positions corresponds to one sensor, and two rows of tool positions correspond to two sensors, and so on. The sensor is located above the tool seat. Such a setting can make the sensor equivalent to being suspended above the tool seat without interfering with the travel path of the tool on the tool seat. Moreover, the sensor can be displaced relative to the tool seat, that is, when the sensor is fixed on the bed, the tool seat will move on the bed, or the tool seat is fixed relative to the bed and the sensor will move relatively on the bed, or although the tool seat will move on the bed, a platform that moves with the tool seat can be set, and the sensor can move on the platform. The above settings are all for enabling the sensor to detect whether there is a tool on each tool position of the row or column of tools on the tool seat when it passes over the row or column of tools on the tool seat (in terms of relative movement, it can also be said that when the tool position on the tool seat passes the sensor).

[0033] That is to say, the sensor has transverse path detection or longitudinal path detection. For example, in one embodiment, the tool seat is located at a specific position on the bed, and can be fixed at the specific position, such as the rear side of the gantry, or the movable tool seat can be moved to the specific position. A sensor track extending transversely or longitudinally is set above the tool seat, and a sensor slider is set on the sensor track. The sensor is installed on the sensor slider, and the sensor driving unit drives the sensor slider to move along the sensor track. When the tools on the tool seat are arranged transversely, a sensor that can move transversely above the tool seat is set, and the sensor passes over the top of the transversely arranged tools, and two different detection signals are generated for tool positions with tools and without tools. When the tools on the tool seat are arranged longitudinally, a sensor that can move longitudinally above the tool seat is set, and the sensor passes over the top of the longitudinally arranged tools, and a detection signal is generated for each tool position in the column. The sensor is a proximity inductive sensor. When the tool on the tool holder and the proximity inductive sensor approach each other during relative movement, the proximity inductive sensor outputs a specific signal, such as a high-level signal or a digital signal 1. If there is no tool on the tool position, the low-level signal output is maintained or the digital signal 0 is output, so that the system can determine that there is no tool on the tool position. If there are tools on all four tool positions in a row, a string of digital signals 1111 can be output. If there is no tool on the second tool position, 1011 is output. In this way, the presence or absence of tools on each tool position on the tool holder can be detected and output, which is convenient for system detection.

[0034] In this embodiment, an optimal solution is provided as follows: the tool magazine 5 also includes a first longitudinal track arranged on the machine tool bed 1, and the sensor 6 is fixedly installed relative to the bed (not necessarily directly fixed on the bed, but can also be indirectly fixed on the bed through other components or structures). The tool seat 51 is installed on the first longitudinal track and is driven by a tool magazine drive unit to move along the first longitudinal track. The tool seat 51 arranges the tools in rows along the longitudinal direction, which can be one row, two rows, three rows or more rows. There is a sensor 6 above each row of tools on the tool seat 51. When the tool magazine drive unit drives the tool seat 51 to move along the first longitudinal track and passes through the sensor 6 above, the sensor above the corresponding row of tools detects whether there are tools in all tool positions of the row of tools. It can be seen that in this embodiment, the movement path of the straight-row tool magazine itself can be further utilized, that is, the tool magazine drive unit drives the tool seat to move along the first longitudinal track through the sensor on top of its tool head, so that the longitudinal movement path of the tool magazine itself is coordinated with the detection path of the sensor. There is no need to add an additional sensor drive mechanism as in the above embodiment, thereby reducing the use of the drive mechanism in the detection process, further saving costs, and optimizing the bed space occupancy.

[0035] It can be seen from this embodiment that the sensor is relatively fixed and stationary, and the detection of all tool positions can be completed by using the driving mechanism of the straight-row tool magazine itself.

[0036] In this embodiment, the tool magazine 5 is located at the rear side of the bed, but the tool magazine 5 will move straight to the processing area, that is, the tool magazine 5 is located at the rear side of the bed in the initial position. The front side of the bed is the processing area, and the processing area is provided with a second longitudinal track. A movable workbench is provided on the second longitudinal track and is driven by a workbench drive unit to move along the second longitudinal track. Two parallel bosses 11 are provided on the bed 1 in the longitudinal direction. The first longitudinal track and the second longitudinal track share the two bosses. A drive installation groove 12 for accommodating the tool magazine drive unit and the workbench drive unit is formed between the two bosses. A common protective cover 13 is provided on the outside of the drive installation groove to protect the tool magazine drive unit and the workbench drive unit.

[0037] In order to further protect the tool, in this embodiment, a tool magazine shield 7 is arranged at the rear side of the bed 1, the front side of the tool magazine shield 7 is open to form a magazine door, and a door panel 71 that can be closed and matched with the magazine door is fixedly installed on the front side of the tool holder 51. When the tool magazine drive unit drives the tool holder 51 to enter the tool magazine shield 7, the door panel 71 closes the magazine door. In this embodiment, the front side of the tool magazine shield is open to facilitate the entry and exit of the tool holder, and the door panel fixed at the front end of the tool holder moves with the tool holder as a whole. The drive of the door panel is undertaken by the drive mechanism of the tool holder, which saves the drive of the tool magazine door and saves costs. Moreover, when the tool holder enters the tool magazine shield, the door panel just closes the magazine door. The design of combining the entire door panel with the tool holder is simple and practical in structure and does not take up too much space.

[0038] This embodiment also optimizes the installation method and structure of the library version. A convex strip 72 extending in the horizontal direction is installed on the rear side of the library door plate 71. A mounting slot hole is set vertically on the convex strip. A mounting hole matching the mounting slot hole is set at the front end of the tool seat. The convex strip 72 overlaps the front end of the tool seat and bolts are passed through the mounting slot hole on the convex strip and the mounting hole on the tool seat to fix the tool library door in front of the tool seat. This method reinforces the library door plate from the rear through the convex strip, and its protruding structure enables the operator to lock the bolts in the up and down directions, which is convenient for disassembly and assembly, and the structure is stable.

[0039] With the tool magazine shield, the sensor can be set inside the tool magazine shield, so that the sensor is further protected and pollution is reduced. The sensor 6 is located above the tool magazine shield 7 on one side of the magazine door, so that each time the tool holder enters and exits the tool magazine shield, it can be detected by the sensor, further ensuring the detection timeliness and accuracy.

[0040] In order to facilitate the installation of the sensor, a mounting bar 61 for mounting the sensor is also provided in this embodiment. The number of mounting bars 61 is consistent with the number of machining spindles of the machine tool. In this embodiment, there are four machining spindles, so four mounting bars are also provided, corresponding to the machining spindles, so that alignment and installation can be facilitated. Each mounting bar is provided with a sensor corresponding to the corresponding column of tool positions on the tool holder below the mounting bar. In this embodiment, three columns of tool positions correspond to one mounting bar below, so three sensors are installed on one mounting bar. In addition, the number of tool position columns arranged on the tool holder is a positive integer multiple of the number of machining spindles of the machine tool. For example, for a machine tool with four machining spindles, 12 columns of tool positions are provided on the tool holder, so as to ensure the number of stored tools in the tool magazine and make reasonable use of space.

[0041] The tool seat of this embodiment includes a sliding seat 52 and a bearing plate 53 detachably arranged on the sliding seat, a tool position for accommodating a tool is arranged on the bearing plate, and the sliding seat 52 is slidably installed with the first longitudinal track. The detachable setting of the bearing plate can make it easier for operators to repair and replace. Furthermore, the sliding seat 52 is provided with bearing plates 53 corresponding to the machine tool processing spindles 3, that is, four processing spindles correspond to four bearing plates, and the mutual center spacing of the bearing plates 53 installed on the sliding seat corresponds to the center spacing between the machine tool processing spindles. Such a setting is conducive to unifying the installation standards and allowing operators to install quickly. Each bearing plate corresponds to a processing spindle, which is conducive to the identification and operation of the operator. If one of the processing spindles fails or the processing mode is switched, the tool on the corresponding bearing plate can also be adjusted accordingly, which is conducive to the operation of the operator. In addition, the number of vertical columns of tool positions arranged on a single carrier plate is less than the number of horizontal rows of tool positions. For example, in this embodiment, the number of vertical columns of tool positions arranged on a single carrier plate is 3, while the number of horizontal rows of tool positions is 4. This arrangement is intended to reduce the number of columns as much as possible in the same space to reduce the use of sensors, thereby ensuring the capacity of the tool magazine and saving costs.

[0042] A plurality of tool blocks 54 are detachably mounted on the carrier plate 53, each tool block being provided with a tool position, and the tool blocks are distributed on the carrier plate 53 in an array. The tool blocks are assembled on the carrier plate like building blocks, and if a problem occurs with a tool position, the tool position can be replaced alone without having to replace the tool holder or the carrier plate as a whole, which further facilitates maintenance by operators and production installation. In particular, the outer contour of the tool block is a square, and the tool blocks are neatly arranged vertically and horizontally on the carrier plate. The tool block with a square contour is more suitable for installation, will not be mis-installed due to orientation problems, and is also convenient for alignment between the tool blocks.

[0043] In order to facilitate the adjustment of the position of the sensor so that it can be aligned with the knife position listed below, a long strip hole extending in the horizontal direction is provided on the mounting bar 61 for adjusting the position of the sensor installed on the mounting bar. In other embodiments, the long strip hole can be replaced by a mounting hole arranged in the horizontal direction, which also realizes the function of adjusting the position of the sensor.

[0044] In this embodiment, the sensor is placed in the tool magazine shield, which is beneficial to the protection of the sensor. In other embodiments, the sensor may not be placed in the tool magazine shield. For example, a gantry for mounting the machining spindle is provided on the bed, and the sensor is installed below the gantry; or an independent mounting crossbeam and gantry are provided on the bed, the mounting crossbeam is located between the tool magazine and the gantry, and the sensor is installed on the mounting crossbeam. In short, the sensor is arranged in the travel path of the tool seat so that the sensor can cooperate with the tool seat drive mechanism to jointly detect the tool position on the tool seat.

[0045] The above is a detailed introduction to a machine tool provided by an embodiment of the utility model. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the core idea of ​​the utility model. At the same time, for general technical personnel in this field, according to the idea and method of the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A tool magazine detection device, characterized in that: The tool magazine includes a tool seat for carrying tools, the tool seat has tool positions for arranging the tools in an array, and also includes sensors arranged corresponding to each row or column of tools on the tool seat. The sensor is located above the tool seat and can be displaced relative to the tool seat so that when the sensor passes over the row or column of tools on the tool seat, it can detect whether there is a tool on each tool position of the row or column of tools on the tool seat.

2. The tool magazine detection device according to claim 1, characterized in that: The tool magazine also includes a first longitudinal track arranged on the machine tool bed. The sensor is fixedly installed relative to the bed. The tool seat is installed on the first longitudinal track and is driven by a tool magazine drive unit to move along the first longitudinal track. The tool seat arranges the tools in rows along the longitudinal direction. There is a sensor above each row of tools on the tool seat. When the tool magazine drive unit drives the tool seat to move along the first longitudinal track and passes through the sensor above, the sensor above the corresponding row of tools detects whether there are tools in all tool positions of the row of tools.

3. The tool magazine detection device according to claim 2, characterized in that: The tool magazine is located at the rear side of the bed, and the front side of the bed is the processing area. The processing area is provided with a second longitudinal track. A movable workbench is provided on the second longitudinal track and is driven by a workbench driving unit to move along the second longitudinal track. Two parallel bosses are provided in the longitudinal direction of the bed. The first longitudinal track and the second longitudinal track share the two bosses. A drive installation groove for accommodating the tool magazine drive unit and the workbench drive unit is formed between the two bosses. A common protective cover is provided on the outside of the drive installation groove to protect the tool magazine drive unit and the workbench drive unit.

4. The tool magazine detection device according to claim 2, characterized in that: The number of tool position rows arranged on the tool holder is a positive integer multiple of the number of machining spindles of the machine tool.

5. The tool magazine detection device according to claim 2, characterized in that: The tool seat comprises a sliding seat and a bearing plate detachably arranged on the sliding seat, a tool position for accommodating a tool is arranged on the bearing plate, and the sliding seat is slidably installed with the first longitudinal track.

6. The tool magazine detection device according to claim 5, characterized in that: The sliding seat is provided with bearing plates corresponding to the machining spindles of the machine tool one by one, and the mutual center distance between the bearing plates installed on the sliding seat corresponds to the center distance between the machining spindles of the machine tool.

7. The tool magazine detection device according to claim 6, characterized in that: The number of vertical columns of tool positions arranged on a single carrier plate is less than the number of horizontal rows of tool positions.

8. The tool magazine detection device according to claim 5 or 6, characterized in that: A plurality of tool position blocks are detachably mounted on the carrier plate, each tool position block is provided with a tool position, and the tool position blocks are distributed on the carrier plate in an array.

9. The tool magazine detection device according to claim 7, characterized in that: The outer contour of the tool block is a square, and the tool blocks are neatly arranged vertically and horizontally on the carrier plate.

10. The tool magazine detection device according to claim 2, characterized in that: A tool magazine guard is provided at the rear side of the bed, the front side of the tool magazine guard is opened to form a magazine door, a magazine door plate is fixedly installed on the front side of the tool seat to form a closable fit with the magazine door, and the magazine door plate closes the magazine door when the tool magazine drive unit drives the tool seat into the tool magazine guard.

11. The tool magazine detection device according to claim 10, characterized in that: The sensor is located inside the tool magazine cover above the side of the magazine door.

12. The tool magazine detection device according to claim 2 or 11, characterized in that: It also includes mounting bars for mounting sensors. The number of mounting bars is consistent with the number of machining spindles of the machine tool. Each mounting bar is provided with a sensor corresponding to a corresponding column of tool positions on a tool seat below the mounting bar.

13. The tool magazine detection device according to claim 12, characterized in that: The mounting bar is provided with a long hole extending in the transverse direction or mounting holes arranged in the transverse direction for adjusting the position of the sensor mounted on the mounting bar.

14. The tool magazine detection device according to claim 10, characterized in that: A convex strip extending in the transverse direction is installed on the rear side of the door panel, and a mounting slot hole is arranged vertically on the convex strip. A mounting hole matching the mounting slot hole is arranged at the front end of the tool seat. The convex strip overlaps with the front end portion of the tool seat and bolts are passed through the mounting slot hole on the convex strip and the mounting hole on the tool seat to fix the tool storage door in front of the tool seat.

15. The tool magazine detection device according to claim 1, characterized in that: The tool seat is located at a specific position on the bed. A sensor track extending horizontally or vertically is arranged above the tool seat. A sensor slider is arranged on the sensor track. The sensor is installed on the sensor slider. The sensor driving unit drives the sensor slider to move along the sensor track.

16. The tool magazine detection device according to claim 1, characterized in that: The sensor is a proximity inductive sensor, and when the tool on the tool holder and the proximity inductive sensor approach each other during relative movement, the proximity inductive sensor outputs a specific signal.

17. The tool magazine detection device according to claim 2, characterized in that: A gantry for mounting a machining spindle is provided on the bed, and the sensor is installed below the gantry; or an independent mounting beam and gantry are provided on the bed, the mounting beam is located between the tool magazine and the gantry, and the sensor is installed on the mounting beam.

18. A machine tool comprising a bed, a movable worktable arranged on the bed and a machining spindle, characterized in that It also includes the tool magazine detection device described in any one of claims 1-16.

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