Broken tool detection device and machining center thereof

Abstract

The utility model relates to the field of machining centers, and particularly discloses a broken cutter detection device and a machining center thereof. The two ends of the track are fixedly connected with suspension frames. A sliding frame sleeves the track in a sliding manner; a first rolling shaft and a second rolling shaft are symmetrically and rotationally connected to the sliding frame corresponding to the rails; the suspended frame and the rail are fixed in the multi-shaft machining center, and then the position of the suspended frame, the first rolling shaft and the second rolling shaft on the rail can be changed, so that the height can be changed when broken tool detection is carried out according to machined workpieces of different shapes, and the detection accuracy is improved. The visual detection device can be obliquely aligned with the cutter under the cooperation of the elastic piece and the movable plate, so that whether the cutter is broken or not is visually judged, then double judgment is conducted in cooperation with the sound sensor, whether the cutter is broken or not can be accurately judged, and therefore the main shaft of the multi-axis machining center is stopped; the problem that detection is inaccurate due to the fact that existing visual broken cutter detection is prone to being blocked by workpieces is solved.

Description

Technical Field

[0001] The utility model relates to the field of machining centers, in particular to a broken tool detection device and a machining center thereof. Background Art

[0002] A machining center is a high-precision, high-efficiency automated machine tool that can perform a variety of machining operations, such as milling, drilling, tapping, boring, etc. A machining center is usually composed of a CNC system, a mechanical body, a servo system, a cooling system, an air supply system, etc. The tools in a machining center are consumable parts and are often disconnected due to improper operation, resulting in the need to quickly stop the spindle movement of the machining center to prevent the loss from expanding.

[0003] The Chinese invention patent with publication number CN114952421A disclosed a broken tool detector for a tool magazine of a machining center machine tool on August 30, 2022, including a detection device body, the right side of the detection device body is electrically connected to a transmission cable, the right side of the detection device body is provided with a shielding cover sleeved on the surface of the connection end of the detection device body, the right side of the shielding cover is provided with an opening, and the transmission cable is located inside the opening. In the present invention, when the shielding cover is sleeved on the surface of the connection end of the detection device body and the transmission cable is located inside the opening, the connection end of the transmission cable and the detection device body is protected, which solves the problem that the structure of the existing broken tool detector is relatively simple and does not have the effect of shielding and protecting the structural part of the equipment. The connection exposed to the outside is easily affected by the coolant and short-circuited, which seriously affects the operating stability and detection accuracy of the broken tool detector and cannot meet the use requirements of various environments.

[0004] However, the above-mentioned disclosed scheme has the following shortcomings: the existing broken tool detection device only adopts optical detection in a single direction, and judges the shape of the tool head on the picture recorded by the visual detection device through a program. As a result, in actual use, due to drilling and other similar operations, the tool enters the interior of the workpiece and is blocked by the workpiece. Therefore, in such a case, the broken tool cannot be detected, and the spindle may continue to move, causing greater damage. Utility Model Content

[0005] The utility model aims to solve the technical problem that the existing broken tool detection device only adopts optical detection in a single direction, and judges the shape of the tool head on the picture recorded by the visual detection device through a program, resulting in that in actual use, due to drilling and other similar operations, the tool enters the interior of the workpiece and is blocked by the workpiece. Therefore, the broken tool cannot be detected in this case, and the spindle may continue to move and cause greater damage. A broken tool detection device and a machining center thereof are provided.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model describes a broken tool detection device and a machining center thereof, comprising a suspension frame, a track and a slide; both ends of the track are fixedly connected to the suspension frame; the track is slidably sleeved with a slide; the slide is symmetrically rotatably connected with a first roller and a second roller corresponding to the track; a movable plate is connected to a pin on the slide; an elastic member is fixedly connected between the movable plate and the slide; a visual detection device is fixedly connected to the movable plate; and a sound sensor is fixedly connected to a hole on the suspension frame.

[0008] Furthermore, a limit roller is rotatably connected to the suspension frame; a traction rope is tensioned on the limit roller; a limit shaft is symmetrically extruded on the traction rope; the limit shaft is threadedly inserted in the limit frame; and a motor is coaxially fixed to the side of the limit roller.

[0009] Furthermore, a suspended roller is sleeved on the traction rope; a suspended seat is rotatably sleeved on the suspended roller; the suspended seat is fixedly connected in the multi-axis machining center; and the suspended frame is fixedly connected in the multi-axis machining center.

[0010] Furthermore, when the slide is in a horizontal state, the visual inspection device is tilted downward.

[0011] A machining center comprises the tool breakage detection device as described above.

[0012] The utility model provides a broken knife detection device and a machining center thereof, which has the following beneficial effects:

[0013] 1. The utility model is fixed in the multi-axis machining center by a suspension frame and a track, and then the position on the track can be changed by using a slide, a first roller and a second roller, so that the height can be changed according to the tool breakage detection when processing workpieces of different shapes, and the visual detection device can be tilted and aligned with the tool under the cooperation of the elastic member and the movable plate, so as to visually judge whether the tool is broken, and then cooperate with the sound sensor to make a double judgment, so as to accurately judge whether the tool is broken, thereby stopping the spindle of the multi-axis machining center, solving the problem that the existing visual tool breakage detection is easily blocked by the workpiece and causes inaccurate detection;

[0014] 2. The utility model drives the limit roller to rotate through a motor, thereby driving the traction rope to perform reciprocating motion, thereby driving the limit shaft fixedly connected to both sides of the traction rope to perform reciprocating motion, thereby driving the visual inspection device fixed on the slide to move. Since the visual inspection device is vertically fixed on the movable plate, and one side of the movable plate is rotatably connected to the slide, the elastic member cooperates with the gravity of the visual inspection device, so that when the slide is in a horizontal state, the visual inspection device tilts downward at a certain angle, and when the slide is in a vertical state, the visual inspection device tilts at a large angle, so that it can be aligned with the tool position of the spindle of the machining center, thereby avoiding obstruction of the workpiece, so that the visual inspection device can visually judge whether the tool is broken in response to workpieces of different shapes, thereby solving the problem that the existing broken tool detection device cannot adapt to workpieces of different shapes for broken tool detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings;

[0016] Figure 1 This is a first axonometric structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the horizontal state structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the utility model in an inclined state;

[0019] Figure 4 It is a schematic diagram of the structure after assembly of the utility model.

[0020] Explanation of the numbers in the figure: 1. Suspension frame; 2. Track; 3. Slide; 4. First roller; 5. Second roller; 6. Limit frame; 7. Limit shaft; 8. Elastic member; 9. Visual inspection device; 10. Limit roller; 11. Traction rope; 12. Suspension seat; 13. Suspension roller; 14. Motor; 15. Multi-axis machining center; 16. Sound sensor; 17. Movable plate. DETAILED DESCRIPTION

[0021] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] 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.

[0023] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0024] See also Figure 1-4 As shown, a broken tool detection device and a machining center thereof include a suspension frame 1, a track 2 and a slide 3; both ends of the track 2 are fixedly connected to the suspension frame 1; the slide 3 is slidably sleeved on the track 2; the slide 3 is symmetrically connected to the track 2 with a first roller 4 and a second roller 5; the slide 3 is pin-connected to a movable plate 17; an elastic member 8 is fixedly connected between the movable plate 17 and the slide 3; a visual detection device 9 is fixedly connected to the movable plate 17; a sound sensor 16 is fixedly connected to a hole on the suspension frame 1; when working, the suspension frame 1 and the track 2 are fixed to the multi-axis machining center. The center 15 is then equipped with a slide 3, a first roller 4 and a second roller 5, which can change the position on the track 2, so that the height can be changed according to the different shapes of workpieces to detect broken tools. With the cooperation of the elastic member 8 and the movable plate 17, the visual inspection device 9 can be tilted to align with the tool, so as to visually determine whether the tool is broken, and then cooperate with the sound sensor 16 for double judgment, so as to accurately determine whether the tool is broken, thereby stopping the spindle of the multi-axis machining center 15, which solves the problem that the existing visual broken tool detection is easily blocked by the workpiece and causes inaccurate detection.

[0025] The suspension frame 1 is rotatably connected to a limit roller 10; a traction rope 11 is tensioned on the limit roller 10; a limit shaft 7 is symmetrically extruded on the traction rope 11; the limit shaft 7 is threadedly inserted into the limit frame 6; a motor 14 is coaxially fixedly connected to the side of the limit roller 10; when working, the limit roller 10 is driven to rotate by the motor 14, thereby driving the traction rope 11 to reciprocate, thereby driving the limit shaft 7 fixedly connected to both sides of the traction rope 11 to reciprocate, thereby driving the visual detection device 9 fixed on the slide 3 to move. It is fixed on the movable plate 17, and one side of the movable plate 17 is rotatably connected to the slide 3, so that the elastic member 8 cooperates with the gravity of the visual inspection device 9, so that when the slide 3 is in a horizontal state, the visual inspection device 9 is tilted downward at a certain angle, and when the slide 3 is in a vertical state, the visual inspection device 9 is tilted at a large angle, so that it can be aligned with the tool position of the spindle of the machining center, thereby avoiding obstruction of the workpiece, so that the visual inspection device 9 can visually judge whether the tool is broken in response to workpieces of different shapes, which solves the problem that the existing broken tool detection device cannot adapt to workpieces of different shapes for broken tool detection.

[0026] The traction rope 11 is sleeved with a suspended roller 13; the suspended roller 13 is rotatably sleeved with a suspended seat 12; the suspended seat 12 is fixedly connected in a multi-axis machining center 15; the suspended frame 1 is fixedly connected in the multi-axis machining center 15; when working, the traction rope 11 is fixed in the multi-axis machining center 15 by the suspended roller 13, so that the shape of the traction rope 11 is restricted, so that it can reciprocate smoothly.

[0027] When the slide 3 is in a horizontal state, the visual inspection device 9 is tilted downward; when working, by tilting the visual inspection device 9 downward when the slide 3 is in a horizontal state, the upper and lower heights of the slide 3 can be adjusted, and the shooting range of the visual inspection device 9 can be aligned with the movement range of the tool, thereby ensuring that it will not be blocked by the workpiece and causing visual inspection to be impossible, thereby solving the problem that the existing broken tool detection device is easily blocked by the workpiece.

[0028] A machining center includes a tool breakage detection device as described above; when working, by installing the tool breakage detection device in the machining center, the tool at the lower end of the spindle of the machining center can be visually judged and applied. When the tool breaks and deforms, it is discovered by the visual detection device 9, and the sound of the breakage is received by the sound sensor 16 at the same time, thereby judging that the tool is broken. The visual detection device 9 is connected to the control center of the machining center, so that the spindle of the machining center stops moving, thereby preventing further damage, solving the problem that the existing machining center cannot quickly judge and reduce damage by itself when judging that the tool is broken.

[0029] By adopting the above scheme, when the utility model is used, the suspension frame 1 and the track 2 are used to fix the multi-axis machining center 15, and then the slide 3, the first roller 4 and the second roller 5 can be used to change the position on the track 2, so that the height can be changed according to the different shapes of workpieces to detect the broken tool. With the cooperation of the elastic member 8 and the movable plate 17, the visual detection device 9 can be tilted to align with the tool, so as to visually judge whether the tool is broken, and then cooperate with the sound sensor 16 to perform a double judgment, so as to be able to judge whether the tool is broken, thereby stopping the spindle of the multi-axis machining center 15, solving the existing visual broken tool detection problem. The problem of inaccurate detection caused by the obstruction of the workpiece; the limit roller 10 is driven to rotate by the motor 14, thereby driving the traction rope 11 to reciprocate, thereby driving the limit shaft 7 fixedly connected to both sides of the traction rope 11 to reciprocate, thereby driving the visual inspection device 9 fixed on the slide 3 to move. Since the visual inspection device 9 is vertically fixed on the movable plate 17, and one side of the movable plate 17 is rotatably connected to the slide 3, the elastic member 8 cooperates with the gravity of the visual inspection device 9, so that when the slide 3 is in a horizontal state, the visual inspection device 9 is tilted downward at a certain angle, and when the slide 3 is in a vertical state, the visual inspection device 9 The large angle of inclination allows the tool position of the machining center spindle to be aligned, thereby avoiding obstruction of the workpiece, so that the visual inspection device 9 can visually judge whether the tool is broken on workpieces of different shapes, solving the problem that the existing broken tool detection device cannot adapt to workpieces of different shapes for broken tool detection; the suspended roller 13 is fixed in the multi-axis machining center 15, so that the shape of the traction rope 11 is restricted, so that it can reciprocate smoothly; when the slide 3 is in a horizontal state, the visual inspection device 9 is tilted downward, so that the upper and lower heights of the slide 3 can be adjusted, so that the shooting range of the visual inspection device 9 can be aligned with the movement range of the tool, This ensures that the tool will not be blocked by the workpiece, resulting in the inability to visually detect, thereby solving the problem that the existing broken tool detection device is easily blocked by the workpiece; by installing the broken tool detection device in the machining center, the tool at the lower end of the spindle of the machining center can be visually judged and applied, and when the tool breaks and deforms and is discovered by the visual detection device 9, the sound of the break is simultaneously received by the sound sensor 16, thereby judging that the tool is broken, and then the visual detection device 9 is connected to the control center of the machining center, so that the spindle of the machining center stops moving, thereby preventing further damage, and solving the problem that the existing machining center itself cannot quickly judge whether the tool is broken and reduce damage.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A broken knife detection device, characterized in that; The invention comprises a suspension frame (1), a track (2) and a slide (3); both ends of the track (2) are fixedly connected to the suspension frame (1); the slide (3) is slidably sleeved on the track (2); a first roller (4) and a second roller (5) are symmetrically rotatably connected to the slide (3) corresponding to the track (2); a movable plate (17) is pin-connected to the slide (3); an elastic member (8) is fixedly connected between the movable plate (17) and the slide (3); a visual detection device (9) is fixedly connected to the movable plate (17); and a sound sensor (16) is fixedly connected to a hole in the suspension frame (1).

2. The broken blade detection device according to claim 1, characterized in that: A limit roller (10) is rotatably connected to the suspension frame (1); a traction rope (11) is tensionedly sleeved on the limit roller (10); a limit shaft (7) is symmetrically extruded on the traction rope (11); the limit shaft (7) is threadedly inserted into the limit frame (6); and a motor (14) is coaxially fixedly connected to the side surface of the limit roller (10).

3. The broken blade detection device according to claim 2, characterized in that: A suspended roller (13) is sleeved on the traction rope (11); a suspended seat (12) is rotatably sleeved on the suspended roller (13); the suspended seat (12) is fixedly connected in a multi-axis machining center (15); and the suspended frame (1) is fixedly connected in the multi-axis machining center (15).

4. The broken blade detection device according to claim 3, characterized in that: When the slide (3) is in a horizontal state, the visual detection device (9) is tilted downward.

5. A machining center, characterized in that: It comprises a broken knife detection device as described in any one of claims 1 to 4 above.

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