Anti-collision alarm device for lathe tool spindle

Abstract

The utility model relates to the technical field of lathes, in particular to a lathe tool spindle anti-collision alarm device which comprises a vibration acceleration sensor and a stable installation assembly, and the stable installation assembly is installed on the surface of the vibration acceleration sensor. The stable installation assembly comprises a threaded waterproof sleeve, the vibration acceleration sensor is fixedly connected into the threaded waterproof sleeve, a threaded base is in threaded connection with the outer side of the bottom of the threaded waterproof sleeve, an installation cavity is formed in the top of the inner side face of the threaded base, and a positioning block clamped with the threaded waterproof sleeve is slidably connected into the installation cavity. And a spring is arranged between the positioning block and the mounting cavity. On the basis that an existing vibration acceleration sensor installation mode is not changed, the positioning block is pushed through the elastic force of the spring, the threaded waterproof sleeve installed in place can be automatically locked in the threaded base, and therefore the vibration acceleration sensor can stably and effectively conduct detection operation on the surface of the lathe tool spindle; therefore, the detection precision of the vibration acceleration sensor is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lathes, in particular to an anti-collision alarm device for a tool spindle of a lathe. Background Art

[0002] A lathe is a machine tool that primarily uses a turning tool to perform turning operations on a rotating workpiece. The vibration acceleration sensor, central processing unit, and alarm are the main components of a lathe tool spindle anti-collision alarm system.

[0003] A Chinese patent discloses a waterproof vibration acceleration sensor (authorization announcement number CN209486130U). The upper surface of the upper cover is provided with a protruding opening, and the inner wall of the protruding opening is provided with a rubber sealing ring. The thickness of the rubber sealing ring is greater than the depth of the plug cover. Because the thickness of the multiple rings is greater than the depth of the sealed plug cover, the rubber ring is squeezed to fill the gap, achieving a sealing effect. The plug cover is provided with a wire outlet, which is arranged outside the protruding opening. The signal output line passes through the rubber sealing ring and the wire outlet in sequence. During use, an M5 thread is provided on the base along the axis of the sensor for mounting the sensor on the test piece. The acceleration sensor moves along the axis to obtain a vibration signal.

[0004] Since the lathe tool spindle drives the tool cutting process, the lathe tool spindle is prone to vibration within a reasonable range due to factors such as tool wear and high workpiece hardness. However, the above-mentioned device only uses a threaded connection to install the vibration acceleration sensor on the measured workpiece. Vibration will reduce the friction between the threaded connections and increase the probability of loosening between the threaded connections. This makes it difficult to ensure that the vibration acceleration sensor is stably locked on the lathe tool spindle, increasing the error of the vibration acceleration sensor detection.

[0005] Therefore, a lathe tool spindle anti-collision alarm device is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the present invention is to provide a lathe tool spindle anti-collision alarm device in order to solve the above problems, thereby improving the problem that the lathe tool spindle anti-collision alarm device is easy to loosen and difficult to ensure its stable operation.

[0007] The utility model achieves the above-mentioned purpose through the following technical solutions: a lathe tool spindle anti-collision alarm device, comprising a vibration acceleration sensor and a stable mounting assembly, wherein the stable mounting assembly is mounted on the surface of the vibration acceleration sensor;

[0008] The stable mounting assembly includes a threaded waterproof sleeve, the bottom of the vibration acceleration sensor is fixedly connected to the interior of the threaded waterproof sleeve, the outer side of the bottom of the threaded waterproof sleeve is threadedly connected to a threaded base, the top of the inner side of the threaded base is provided with a mounting cavity, the interior of the mounting cavity is slidably connected to a positioning block that is engaged with the threaded waterproof sleeve, one end of the positioning block extends to the outside of the mounting cavity, and the positioning block is located between the end of the mounting cavity and the inner wall of the mounting cavity. A spring that is always in a compressed state is provided. Without changing the existing vibration acceleration sensor installation method, the spring pushes the positioning block to automatically lock the installed threaded waterproof sleeve into the threaded base, allowing the vibration acceleration sensor to stably and effectively perform detection operations on the surface of the lathe tool spindle, thereby ensuring the detection accuracy of the vibration acceleration sensor.

[0009] Preferably, the positioning block is fixedly connected to the end of the installation cavity with an adjustment rope, and one end of the adjustment rope slides through the installation cavity and extends to the outside of the outer side of the threaded base, which can reduce the difficulty for the staff to separate the positioning block from the annular groove, thereby achieving the effect of easy disassembly.

[0010] Preferably, the number of the installation cavity, positioning block, spring and adjustment rope is the same and no less than four, which can increase the indirect locking area of ​​the threaded base to the threaded waterproof sleeve, further ensuring the detection accuracy of the vibration acceleration sensor.

[0011] Preferably, a swivel is provided on the outer rotating sleeve of the threaded base, and one end of the adjustment rope extending to the outside of the threaded base is fixedly connected to the top surface of the swivel, which enables the staff to adjust all the adjustment ropes at the same time by pulling the swivel, thereby reducing the difficulty of disassembling the vibration acceleration sensor.

[0012] Preferably, the outer side surface of the threaded base is threadedly connected to an adjustment ring, and the swivel is embedded and rotatably connected to the top inside of the adjustment ring, which can lock the adjusted swivel in the corresponding position. There is no need to worry about the positioning block being re-engaged with the ring groove after the staff loosens the adjustment ring, thereby ensuring that the staff can easily disassemble the vibration acceleration sensor.

[0013] Preferably, the horizontal cross-section of the adjustment ring is a regular decagon, and the corners of the adjustment ring are rounded, which can increase the friction between the staff's hand and the adjustment ring, so as to reduce the probability of the staff's hand slipping.

[0014] Preferably, an annular groove is provided at the bottom of the outer side surface of the threaded waterproof sleeve, and the end of the positioning block located outside the installation cavity can be clamped with the annular groove, which can increase the clamping area between the positioning block and the threaded waterproof sleeve, and lock the threaded waterproof sleeve more stably inside the threaded base.

[0015] Preferably, the vertical cross-sectional shapes of the positioning block and the annular groove engaging portion are both matching right-angled triangles, and the inclined surfaces of the annular groove and the positioning block are both facing upward, which enables the threaded waterproof sleeve to push against the positioning block by itself during the process of penetrating into the threaded base, so that the threaded waterproof sleeve can be connected to the threaded base in place without the need for staff to actively adjust the position of the positioning block.

[0016] The beneficial effects of the utility model are:

[0017] 1. In the utility model, without changing the installation method of the existing vibration acceleration sensor, the elastic force of the spring is used to push the positioning block, so that the installed threaded waterproof sleeve can be automatically locked in the threaded base, so that the vibration acceleration sensor can stably and effectively perform detection operations on the surface of the lathe tool spindle to ensure the detection accuracy of the vibration acceleration sensor.

[0018] 2. In the present invention, the staff can separate all the positioning blocks from the ring grooves by rotating the adjustment ring, and can lock the positioning blocks firmly in place, so that the staff can separate the threaded waterproof cover with the vibration acceleration sensor from the threaded base without obstruction, thereby reducing the burden of the staff on subsequent maintenance of the vibration acceleration sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 It is a vertical cross-sectional schematic diagram of the utility model;

[0021] Figure 3 for Figure 2 A magnified view of middle A;

[0022] Figure 4 It is a horizontal cross-sectional schematic diagram of the present utility model.

[0023] In the figure: 1. Vibration acceleration sensor; 2. Stable mounting assembly; 21. Threaded waterproof sleeve; 211. Ring groove; 22. Threaded base; 221. Mounting cavity; 23. Positioning block; 24. Spring; 25. Adjustment rope; 26. Swivel; 27. Adjustment ring. DETAILED DESCRIPTION

[0024] The following will be combined with the 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.

[0025] When implementing: Figure 1-4 As shown, a lathe tool spindle anti-collision alarm device includes a vibration acceleration sensor 1 and a stable mounting component 2, and the stable mounting component 2 is mounted on the surface of the vibration acceleration sensor 1.

[0026] The user first needs to weld the threaded base 22 to the corresponding position of the lathe tool spindle, and then thread the threaded waterproof cover 21 with the vibration acceleration sensor 1 on the threaded base 22, and then fix the PLC controller and the three-color alarm light in a conspicuous position on the lathe that does not affect normal operation, and then electrically connect the vibration acceleration sensor 1, the three-color alarm light and the lathe tool spindle to the PLC controller through the signal transmission line.

[0027] In the process of the lathe tool spindle driving the tool to cut the workpiece, the vibration acceleration sensor 1 detects the vibration acceleration value of the lathe tool spindle in real time through the threaded waterproof cover 21 and the threaded base 22, and transmits the detection data to the PLC controller. The PLC controller compares the detection data with the data preset inside it. If the detection data is less than the preset data, it indicates that the vibration acceleration of the lathe tool spindle is within a reasonable range at this time. If the detection data is equal to or greater than the preset data, it indicates that the lathe tool spindle is in abnormal operation at this time. At this time, the PLC controller controls the lathe tool spindle to shut down according to the alarm program preset inside it, and turns on the three-color alarm light at the same time. The three-color alarm light emits an audible and visual alarm to warn the surrounding staff to come and deal with it in time.

[0028] It should be noted that the vibration acceleration sensor 1, three-color alarm light, lathe tool spindle and PLC controller in the above description are all devices with relatively mature application of existing technologies. The specific models can be selected according to actual needs. At the same time, the vibration acceleration sensor 1, three-color alarm light, lathe tool spindle and PLC controller can be powered by a built-in power supply or by AC power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0029] like Figure 2 、 Figure 3 and Figure 4 As shown, the stable mounting assembly 2 includes a threaded waterproof sleeve 21, the bottom of the vibration acceleration sensor 1 is fixedly connected to the inside of the threaded waterproof sleeve 21, the bottom outer side of the threaded waterproof sleeve 21 is threadedly connected to a threaded base 22, and the top of the inner side of the threaded base 22 is provided with a mounting cavity 221, and the interior of the mounting cavity 221 is slidably connected to a positioning block 23 that is clamped to the threaded waterproof sleeve 21, and one end of the positioning block 23 extends to the outside of the mounting cavity 221, and the positioning block 23 is located between the end of the mounting cavity 221 and the mounting cavity 221, and a spring 24 that is always in a compressed state is provided.

[0030] The outer bottom of the threaded waterproof sleeve 21 is provided with an annular groove 211, and the end of the positioning block 23 located outside the mounting cavity 221 can engage with the annular groove 211. The vertical cross-section of the engaging portion of the positioning block 23 and the annular groove 211 is a matching right triangle, with the inclined surfaces of the annular groove 211 and the positioning block 23 both facing upward.

[0031] like Figure 2 、 Figure 3 and Figure 4 As shown, the positioning block 23 is located at the end of the mounting cavity 221 and is fixedly connected to an adjustment rope 25. One end of the adjustment rope 25 slides through the mounting cavity 221 and extends to the outside of the outer side of the threaded base 22. The mounting cavity 221, positioning block 23, spring 24, and adjustment rope 25 are identical in number and no less than four, and are distributed in a circular array. A swivel 26 is rotatably mounted on the outer side of the threaded base 22. The end of the adjustment rope 25 extending to the outside of the threaded base 22 is fixedly connected to the top surface of the swivel 26. An adjustment ring 27 is threadedly connected to the outer side of the threaded base 22. The swivel 26 is embedded and rotatably connected to the top interior of the adjustment ring 27. The horizontal cross-section of the adjustment ring 27 is a regular decagon, and the corners of the adjustment ring 27 are rounded.

[0032] The bottom of the outer side surface of the threaded waterproof sleeve 21 is fixedly connected to a regular hexagonal adjustment sleeve, which enables the staff to quickly install and remove the threaded waterproof sleeve 21 with the help of tools such as wrenches that match the regular hexagonal adjustment sleeve; the outer side surface of the threaded base 22 is fixedly connected to a rubber bellows that contacts the bottom of the adjustment ring 27, and the external thread of the threaded base 22 is arranged on the inner side of the rubber bellows. On the basis of not affecting the normal spiral movement of the adjustment ring 27, the rubber bellows can prevent external dust, debris and other impurities from adhering to the surface of the external thread of the threaded base 22 to ensure the normal spiral movement of the adjustment ring 27.

[0033] When the staff needs to remove the vibration acceleration sensor 1, the staff only needs to rotate the adjusting ring 27 so that the adjusting ring 27 rotates and moves downward, and the adjusting ring 27 drives the rotating ring 26 to move downward. The rotating ring 26 pulls all the adjusting ropes 25 at the same time, and the adjusting ropes 25 pull the positioning block 23 into the installation cavity 221. When the positioning block 23 is completely returned to the inside of the installation cavity 221, the positioning block 23 is completely separated from the annular groove 211, and the threaded waterproof cover 21 also loses its obstruction at the same time. The staff can easily remove the threaded waterproof cover 21 together with the vibration acceleration sensor 1 from the threaded base 22.

[0034] When the present invention is in use, when the staff screws the threaded waterproof sleeve 21 into the threaded base 22, the corners of the threaded waterproof sleeve 21 contact the inclined surface of the positioning block 23 in advance, which can actively push the positioning block 23 back into the interior of the installation cavity 221 during the subsequent process of the threaded waterproof sleeve 21 penetrating into the threaded base 22; when the threaded waterproof sleeve 21 and the threaded base 22 are connected in place, the annular groove 211 is also just aligned with the installation cavity 221, and the spring 24 quickly pushes the end of the positioning block 23 into the annular groove 211 for engagement. At this time, the horizontal surfaces of the positioning block 23 and the annular groove 211 conflict with each other, which can prevent the threaded waterproof sleeve 21 from loosening along the threaded base 22, which can improve the stability of the operation of the vibration acceleration sensor 1, thereby achieving the effect of improving the detection accuracy of the vibration acceleration sensor 1.

[0035] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A lathe tool spindle anti-collision alarm device, characterized in that: include: Vibration acceleration sensor (1); A stable mounting assembly (2) is mounted on the surface of a vibration acceleration sensor (1); the stable mounting assembly (2) comprises a threaded waterproof sleeve (21); the bottom of the vibration acceleration sensor (1) is fixedly connected to the inside of the threaded waterproof sleeve (21); the outer side of the bottom of the threaded waterproof sleeve (21) is threadedly connected to a threaded base (22); the top of the inner side of the threaded base (22) is provided with a mounting cavity (221); the interior of the mounting cavity (221) is slidably connected to a positioning block (23) that is engaged with the threaded waterproof sleeve (21); one end of the positioning block (23) extends to the outside of the mounting cavity (221); the positioning block (23) is located between the end of the mounting cavity (221) and the inner wall of the mounting cavity (221); and a spring (24) that is always in a compressed state is provided.

2. The lathe tool spindle anti-collision alarm device according to claim 1, characterized in that: The end of the positioning block (23) located in the installation cavity (221) is fixedly connected to an adjustment rope (25), and one end of the adjustment rope (25) slides through the installation cavity (221) and extends to the outside of the outer side of the threaded base (22).

3. The lathe tool spindle anti-collision alarm device according to claim 2, characterized in that: The number of the installation cavity (221), the positioning block (23), the spring (24) and the adjustment rope (25) is the same and no less than four.

4. The lathe tool spindle anti-collision alarm device according to claim 3, characterized in that: The outer rotating sleeve of the threaded base (22) is provided with a rotating ring (26), and one end of the adjusting rope (25) extending to the outside of the threaded base (22) is fixedly connected to the top surface of the rotating ring (26).

5. The lathe tool spindle anti-collision alarm device according to claim 4, characterized in that: The outer side surface of the threaded base (22) is threadedly connected with an adjusting ring (27), and the rotating ring (26) is embedded in the top of the adjusting ring (27) and is rotatably connected.

6. The lathe tool spindle anti-collision alarm device according to claim 5, characterized in that: The horizontal cross-section of the adjustment ring (27) is a regular decagon, and the corners of the adjustment ring (27) are rounded.

7. The lathe tool spindle anti-collision alarm device according to claim 1, characterized in that: An annular groove (211) is provided at the bottom of the outer side surface of the threaded waterproof sleeve (21), and the end of the positioning block (23) located outside the installation cavity (221) can be engaged with the annular groove (211).

8. The lathe tool spindle anti-collision alarm device according to claim 7, characterized in that: The vertical cross-sectional shapes of the engaging portions of the positioning block (23) and the annular groove (211) are both matching right-angled triangles, and the inclined surfaces of the annular groove (211) and the positioning block (23) are both facing upwards.

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