Automatic detection device for thermal stability of machine tool spindle

Abstract

The utility model discloses an automatic detection device for thermal stability of a machine tool spindle, which belongs to the technical field of temperature detection of the machine tool spindle and comprises a workbench, a control electric cabinet and a detection box fixedly connected to the top of the workbench, and a mobile detection mechanism arranged on the outer side of the detection box and comprising a connecting frame. The outer side of the connecting frame is fixedly connected with a motor, the output end of the motor is fixedly connected with a lead screw, the outer side of the lead screw is in threaded connection with a ferrule, the top of the ferrule is fixedly connected with a limiting rod, a moving groove is formed in the inner top wall of the connecting frame, and the outer side of the ferrule is fixedly connected with a connecting rod. The utility model provides the automatic detection device for the thermal stability of the machine tool main shaft, which not only can quickly detect the machine tool main shaft, but also can automatically cool a workpiece when the temperature of the main shaft is detected to be too high in the detection process, so as to prevent the main shaft from being accidentally injured due to high temperature and high speed in the detection process.

Description

Technical Field

[0001] The utility model belongs to the technical field of temperature detection of machine tool spindles, in particular to an automatic detection device for thermal stability of a machine tool spindle. Background Art

[0002] The accuracy of CNC machine tools is generally categorized into geometric accuracy, positional accuracy, and operating accuracy. Furthermore, dynamic accuracy is a key component of machine tool accuracy, which refers to its accuracy under operating conditions such as external loads, temperature rise, and vibration. Thermal accuracy is the most important factor affecting dynamic accuracy. Temperature rise is a key metric in evaluating machine tool spindles, comprehensively reflecting factors such as spindle design, manufacturing quality, assembly process, and material quality.

[0003] At the same time, the application number is CN201210483508.2, "A method for detecting the thermal stability of a machine tool spindle component." By introducing the measurement and limitation of the thermal deformation of the machine tool spindle component, it can ensure that the precision of the purchased equipment is less affected by temperature and remains stable over the long term, thereby maximally meeting the needs of actual finishing.

[0004] As mentioned above, during use, when inspecting the machine tool spindle, only a certain area of ​​the machine tool spindle can be inspected, and the spindle cannot be automatically inspected in all directions, resulting in relatively low inspection efficiency.

[0005] Therefore, in order to solve the above problems, an automatic detection device for thermal stability of machine tool spindle is proposed. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the utility model provides an automatic detection device for the thermal stability of a machine tool spindle, which has the advantages of being able to quickly detect the machine tool spindle and automatically cool the workpiece when the temperature is too high.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] An automatic detection device for thermal stability of a machine tool spindle comprises a workbench, a control cabinet is fixedly connected to the top of the workbench, a detection box is installed on the top of the workbench, and a movable detection mechanism is provided on the outer side of the detection box;

[0009] The mobile detection mechanism includes a connecting frame, the outer side of the connecting frame is fixedly connected to a motor, the output end of the motor is fixedly connected to a screw, the outer side of the screw is threadedly connected to a ring, the top of the ring is fixedly connected to a limiting rod, a moving groove is opened in the inner top wall of the connecting frame, the outer side of the ring is fixedly connected to a connecting rod, the outer side of the connecting rod is fixedly connected to a temperature detector, and a spindle workpiece is placed on the top of the workbench.

[0010] Preferably, the end of the screw rod away from the motor is fixedly connected to the No. 1 rotating rod, the outer side of the No. 1 rotating rod is transmission-connected with a belt, the belt and one end of the No. 1 rotating rod are transmission-connected with the No. 2 rotating rod, the top of the workbench is fixedly connected to a stabilizing plate, and the outer side of the No. 2 rotating rod is fixedly connected to a snap-on cover.

[0011] Preferably, a cooling mechanism is provided on the top of the workbench, and the cooling mechanism includes a water tank, a scale plate is fixedly connected to the outside of the water tank, a water inlet plate is clamped on the top of the water tank, a No. 1 extraction pump is fixedly connected to the outside of the water tank, a spray plate is fixedly connected to the outside of the No. 1 extraction pump, a collecting tank is provided inside the workbench, a No. 2 extraction pump is fixedly connected to the outside of the water tank, and a water pipe is fixedly connected to the end of the No. 2 extraction pump away from the water tank.

[0012] Preferably, the screw rod is rotatably connected to the inner side of the connecting frame, and the top of the limiting rod is slidably connected to the inside of the moving groove.

[0013] Preferably, the temperature detector is movably connected to the outside of the connecting frame through a connecting rod, and the temperature detector is located above the clamping cover.

[0014] Preferably, the clamping cover is rotatably connected to the interior of the stabilizing plate, and the spindle workpiece is clamped inside the clamping cover.

[0015] Preferably, the spray plate is located on the top of the spindle workpiece, the water storage tank is fixedly connected to the top of the workbench, and one end of the water pipe is located inside the collecting tank.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The utility model sets up a workbench, first places the spindle workpiece on the top of the workbench, and detects the temperature of the surface of the spindle body through a temperature detector. Through the mobile detection mechanism outside the detection box, the temperature detector can be moved back and forth on the top of the spindle workpiece, and can drive the spindle workpiece to rotate, thereby achieving an efficient detection effect, which makes it easy for people to judge the thermal dynamic rotation accuracy of the spindle within a specific speed range. When the accuracy exceeds the standard, people are prompted to analyze and study the accuracy of all components that affect the spindle rotation accuracy and the installation accuracy between them, ensuring that the spindle can control the corresponding technical requirements before being installed on the high-precision machine tool, and ensuring the stability of the thermal dynamic accuracy of the spindle after being installed on the high-precision machine tool.

[0018] 2. The utility model is provided with a workbench, on the top of which a detection box is fixedly connected. When the temperature detected by the spindle workpiece is too high, in order to eliminate the accidental damage to the spindle under high-temperature and high-speed working conditions, the cooling mechanism will automatically spray water, thereby cooling the spindle workpiece. The sprayed water is collected and processed by a collection trough, and then transported to the inside of the water storage tank again by the No. 2 extraction pump, thereby achieving the effect of preventing water waste while cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the outer structure of the mobile detection mechanism in the utility model;

[0021] Figure 3 This is a schematic structural diagram of the outer side of the cooling mechanism in the present invention;

[0022] Figure 4 This is a schematic structural diagram of the inner side of the connecting frame in the present invention;

[0023] Figure 5 for Figure 1 A magnified view of the structure in the middle.

[0024] In the figure: 1. Workbench; 2. Control cabinet; 3. Test box; 4. Mobile test mechanism;

[0025] 41. Connecting frame; 42. Motor; 43. Screw; 44. Ferrule; 45. Limiting rod; 46. Moving groove; 47. Connecting rod; 48. Temperature detector; 49. Rotating rod No. 1; 410. Belt; 411. Rotating rod No. 2; 412. Stabilizing plate; 413. Snap-on cover; 414. Spindle workpiece; 5. Cooling mechanism;

[0026] 51. Water storage tank; 52. Scale plate; 53. Water inlet plate; 54. Extraction pump No. 1; 55. Spray plate;

[0027] 56. Collection tank; 57. Extraction pump No. 2; 58. Water pipe. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1: An automatic detection device for thermal stability of a machine tool spindle, such as Figures 1 to 5 As shown, it includes a workbench 1, a control cabinet 2 is fixedly connected to the top of the workbench 1, a detection box 3 is installed on the top of the workbench 1, and a mobile detection mechanism 4 is provided on the outside of the detection box 3;

[0030] The mobile detection mechanism 4 includes a connecting frame 41, the outer side of the connecting frame 41 is fixedly connected to the motor 42, the output end of the motor 42 is fixedly connected to the screw rod 43, the outer side of the screw rod 43 is threadedly connected to the ring 44, the top of the ring 44 is fixedly connected to the limiting rod 45, a moving groove 46 is opened in the inner top wall of the connecting frame 41, the outer side of the ring 44 is fixedly connected to the connecting rod 47, the outer side of the connecting rod 47 is fixedly connected to the temperature detector 48, and a spindle workpiece 414 is placed on the top of the workbench 1.

[0031] Specifically, one end of the screw rod 43 away from the motor 42 is fixedly connected to the No. 1 rotating rod 49, the outer side of the No. 1 rotating rod 49 is transmission-connected with a belt 410, the belt 410 and one end of the No. 1 rotating rod 49 are transmission-connected with the No. 2 rotating rod 411, the top of the workbench 1 is fixedly connected to a stabilizing plate 412, and the outer side of the No. 2 rotating rod 411 is fixedly connected to a snap-on cover 413.

[0032] like Figures 1 to 5 As shown, the screw rod 43 is rotatably connected to the inner side of the connecting frame 41, the top of the limit rod 45 is slidably connected to the inside of the movable groove 46, the temperature detector 48 is movably connected to the outside of the connecting frame 41 through the connecting rod 47, and the temperature detector 48 is located above the clamping cover 413, the clamping cover 413 is rotatably connected to the inside of the stabilizing plate 412, and the spindle workpiece 414 is clamped to the inside of the clamping cover 413.

[0033] Furthermore, the electrical connection between the control cabinet 2 and the motor 42 is controlled, and the motor 42 can be started by controlling the electrical cabinet 2, so that the motor 42 drives the screw rod 43 to rotate inside the connecting frame 41. Since the top of the limiting rod 45 is slidably connected to the inside of the movable groove 46, it can limit the ring 44.

[0034] like Figures 1 to 5 As shown, the temperature detector 48 is connected to the detection box 3 via PLC, and the detected temperature result will be displayed on the surface of the detection box 3. At this time, the temperature of the surface of the spindle workpiece 414 can be monitored in real time.

[0035] It is worth noting that, by using the No. 1 rotating rod 49 in conjunction with the belt 410 , the No. 2 rotating rod 411 can drive the snap cover 413 to rotate inside the stabilizing plate 412 , thereby enabling the snap cover 413 to drive the spindle workpiece 414 to rotate.

[0036] like Figures 1 to 5 As shown, a cooling mechanism 5 is provided on the top of the workbench 1, and the cooling mechanism 5 includes a water tank 51, a scale plate 52 is fixedly connected to the outside of the water tank 51, a water inlet plate 53 is clamped on the top of the water tank 51, a No. 1 extraction pump 54 is fixedly connected to the outside of the water tank 51, and a spray plate 55 is fixedly connected to the outside of the No. 1 extraction pump 54. A collecting tank 56 is provided inside the workbench 1, a No. 2 extraction pump 57 is fixedly connected to the outside of the water tank 51, and a water pipe 58 is fixedly connected to the end of the No. 2 extraction pump 57 away from the water tank 51.

[0037] It is worth emphasizing that the spray plate 55 is located on the top of the spindle workpiece 414, the water tank 51 is fixedly connected to the top of the workbench 1, and one end of the water pipe 58 is located inside the collection tank 56. When the temperature detected by the spindle workpiece 414 exceeds the standard value set by the PLC, the No. 1 extraction pump 54 will start and turn on, thereby cooling the surface of the spindle workpiece 414.

[0038] The structure of the motor is prior art and will not be described in detail. Furthermore, the present invention also includes a power supply, a controller, and a switch, which are not the main technical points of this patent and will not be described in detail. The wiring diagram of the motor in this utility model is common knowledge in the field, and its operating principle is already known technology. The model is selected according to actual use, so the control method and wiring layout of the motor will not be explained in detail.

[0039] Working principle and process: by setting up a workbench 1, first install the spindle workpiece 414 inside the clamping cover 413, and then start the temperature detector 48 by controlling the electric cabinet 2, and then detect and process the temperature of the surface of the spindle workpiece 414, and start the motor 42, so that the motor 42 drives the screw rod 43 to rotate inside the connecting frame 41, and the rotation of the screw rod 43 drives the ring 44 to rotate. Since the limit rod 45 is fixedly connected to the top of the ring 44, and the top of the limit rod 45 is slidably connected to the inside of the moving groove 46, the ring 44 will move on the outside of the screw rod 43, and then through the cooperation with the connecting rod 47, the connecting rod 47 drives the temperature detector 48 to move on the top of the spindle workpiece 414, and the rotation of the screw rod 43 It will drive the No. 1 rotating rod 49 to rotate. Through the cooperation of the No. 1 rotating rod 49 and the belt 410, the No. 2 rotating rod 411 can drive the clamping cover 413 to rotate inside the stabilizing plate 412, and then the clamping cover 413 can drive the spindle workpiece 414 to rotate, thereby achieving the effect of quickly detecting the surface temperature of the spindle workpiece 414. When the detected temperature exceeds the set value, the No. 1 extraction pump 54 on the outside of the water tank 51 is started, so that the water inside the water tank 51 is sprayed out through the spray plate 55, and the spindle workpiece 414 is cooled. The cooled water will enter the interior of the collection tank 56, and by starting the No. 2 extraction pump 57, the collected water will enter the interior of the water tank 51 again through the water pipe 58, thereby avoiding the waste of water resources.

[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic detection device for thermal stability of a machine tool spindle, comprising a workbench (1), characterized in that: The top of the workbench (1) is fixedly connected to a control cabinet (2), a detection box (3) is installed on the top of the workbench (1), and a mobile detection mechanism (4) is provided on the outside of the detection box (3); The mobile detection mechanism (4) includes a connecting frame (41), the outer side of the connecting frame (41) is fixedly connected to a motor (42), the output end of the motor (42) is fixedly connected to a screw rod (43), the outer side of the screw rod (43) is threadedly connected to a ferrule (44), the top of the ferrule (44) is fixedly connected to a limit rod (45), a moving groove (46) is provided in the inner top wall of the connecting frame (41), the outer side of the ferrule (44) is fixedly connected to a connecting rod (47), the outer side of the connecting rod (47) is fixedly connected to a temperature detector (48), and a spindle workpiece (414) is placed on the top of the workbench (1).

2. The automatic detection device for thermal stability of a machine tool spindle according to claim 1, characterized in that: One end of the screw rod (43) away from the motor (42) is fixedly connected to a first rotating rod (49), the outer side of the first rotating rod (49) is connected to a belt (410), the belt (410) and one end of the first rotating rod (49) are connected to a second rotating rod (411), the top of the workbench (1) is fixedly connected to a stabilizing plate (412), and the outer side of the second rotating rod (411) is fixedly connected to a snap-on cover (413).

3. The automatic detection device for thermal stability of a machine tool spindle according to claim 1, characterized in that: A cooling mechanism (5) is provided on the top of the workbench (1), and the cooling mechanism (5) includes a water tank (51), a scale plate (52) is fixedly connected to the outside of the water tank (51), a water inlet plate (53) is clamped on the top of the water tank (51), a first extraction pump (54) is fixedly connected to the outside of the water tank (51), a spray plate (55) is fixedly connected to the outside of the first extraction pump (54), a collecting tank (56) is provided inside the workbench (1), a second extraction pump (57) is fixedly connected to the outside of the water tank (51), and a water pipe (58) is fixedly connected to the end of the second extraction pump (57) away from the water tank (51).

4. The automatic detection device for thermal stability of a machine tool spindle according to claim 1, characterized in that: The screw rod (43) is rotatably connected to the inner side of the connecting frame (41), and the top of the limiting rod (45) is slidably connected to the inside of the moving groove (46).

5. The automatic detection device for thermal stability of a machine tool spindle according to claim 1, characterized in that: The temperature detector (48) is movably connected to the outside of the connecting frame (41) via a connecting rod (47), and the temperature detector (48) is located above the clamping cover (413).

6. The automatic detection device for thermal stability of a machine tool spindle according to claim 2, characterized in that: The clamping cover (413) is rotatably connected to the interior of the stabilizing plate (412), and the spindle workpiece (414) is clamped to the interior of the clamping cover (413).

7. The automatic detection device for thermal stability of a machine tool spindle according to claim 3, characterized in that: The spray plate (55) is located on the top of the spindle workpiece (414), the water storage tank (51) is fixedly connected to the top of the workbench (1), and one end of the water pipe (58) is located inside the collection tank (56).

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