Thread detection machine

Abstract

The utility model relates to the technical field of thread detection, in particular to a thread detection machine. A thread detection machine comprises a rack, the rack comprises a base and a cantilever, and the cantilever is fixed at the top of the base; the lifting module is arranged on the rack; the detection assembly is used for detecting whether the internal thread of the workpiece is complete or not, the detection assembly is arranged at the lifting end of the lifting module, and the detection assembly comprises a rotatable screw probe; the supporting jig is used for bearing a workpiece to be detected below the detection assembly and comprises a bearing plate, a magnetized object and at least one main supporting column. The device has the beneficial effects that the device can be flexibly adjusted according to opening positions of different workpieces in a magnetic attraction fixing manner, so that the tedious operation of punching holes in a bearing plate in advance to fix a main supporting column and an auxiliary supporting column in the prior art is avoided, the time and the labor cost are saved, the universality and the flexibility of equipment are greatly improved, and the production efficiency is improved. And the detection efficiency is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of thread detection, in particular to a thread detection machine. Background Art

[0002] In the prior art, nuts are usually fixed to workpieces by welding, and the welding process may cause damage to the internal threads of the nut. In order to detect whether the internal threads of the nut on the workpiece are damaged, an internal thread detection machine is usually used for thread detection. To ensure the accuracy of the detection, the workpiece needs to be accurately positioned on the base of the detection machine, and the aperture of the nut needs to be coaxial with the screw on the detection machine.

[0003] However, existing workpiece positioning fixtures typically use a pin that penetrates a hole in the workpiece and is fixed to a base. Because workpieces vary in shape and hole location, each time a new workpiece is tested, a new pin hole must be drilled in the base, corresponding to the workpiece's hole location. This process is not only time-consuming and labor-intensive, but can also lead to inaccurate or unstable positioning, compromising the accuracy and efficiency of test results. Utility Model Content

[0004] The present invention addresses the technical problems existing in the prior art by providing a thread detection machine that solves the problem that existing workpiece positioning fixtures typically use a pin that penetrates a hole in the workpiece and is fixed to a base. Because the shapes and hole positions of different workpieces vary, each time a workpiece is changed for testing, a new fixing hole for the pin must be drilled in the base according to the hole position on the workpiece. This process is not only time-consuming and labor-intensive, but also easily leads to inaccurate or unstable positioning, thereby affecting the accuracy and efficiency of the test results.

[0005] The utility model solves the above technical problems with the following technical solutions: A thread detection machine comprising:

[0006] A frame, the frame comprising a base and a cantilever, the cantilever being fixed to the top of the base;

[0007] A lifting module, wherein the lifting module is arranged on the frame;

[0008] A detection component for detecting whether the internal thread of the workpiece is complete, wherein the detection component is arranged on the lifting end of the lifting module, wherein the detection component includes a rotatable screw probe;

[0009] A support fixture for carrying a workpiece for inspection under a detection component, the support fixture includes a support plate, a magnet, at least one main support column, and a plurality of auxiliary support columns, the support plate is fixed on a base, the magnet is arranged inside the support plate, a fixing hole is provided along the axial direction of the screw probe and on the support plate, the main support column is inserted into the fixing hole of the support plate, wherein a avoidance hole is provided on the top of the main support column, and the wall avoidance hole is coaxial with the screw probe, the plurality of auxiliary support columns are magnetically attracted to any position on the support plate, each auxiliary support column is fixedly connected to a limiting pin on the top, and the main support column and the auxiliary support column are respectively provided as a metal main support column and a metal auxiliary column that can be magnetically attracted.

[0010] The beneficial effects of the utility model are:

[0011] 1) The detection machine sets a bearing plate on the base and sets a magnet inside the bearing plate. The magnetic attraction force generated by the magnet can make the main supporting column and the auxiliary supporting column be magnetically fixed at any position on the bearing plate as needed. The bearing plate is preset with a fixing hole along the axis direction of the screw probe. The main supporting column is fixed in advance through the fixing hole, so that the avoidance hole on the main supporting column is coaxial with the screw probe, and the nut hole on the workpiece is coaxial with the avoidance hole. In this way, after ensuring that the nut hole on the workpiece is accurately aligned with the screw probe, the position of the nut hole of the workpiece on the bearing plate is determined in advance, and then according to the position of different openings on the workpiece, the auxiliary supporting column is magnetically attracted to the corresponding position on the bearing plate, and then the limit pin on the top of the auxiliary supporting column is used to pass through the opening on the workpiece to complete the positioning and fixation of the workpiece.

[0012] 2) In summary, the use of magnetic fixation can flexibly adjust the opening position according to different workpieces, eliminating the previous tedious operation of pre-drilling holes on the carrier plate to fix the main and auxiliary support columns, saving time and labor costs, greatly improving the versatility and flexibility of the equipment, and also improving detection efficiency.

[0013] On the basis of the above technical solution, the present invention can also be improved as follows.

[0014] Furthermore, the lifting module includes a power bin, a first motor, a first pulley, a second pulley, a transmission belt, and a splint. The power bin is fixed on one side of the cantilever, the first motor is fixed on the outer side of the power bin, and the driving end of the first motor passes through the power bin and extends into the power bin.

[0015] Furthermore, the first pulley and the second pulley are rotatably connected to the top and bottom of the power compartment respectively through a rotating shaft, wherein the first pulley is connected to the driving end of the first motor, and the transmission belt is assembled on the outside of the first pulley and the second pulley, and the splint is fixed on one side of the transmission belt.

[0016] The beneficial effect of adopting the above-mentioned further scheme is that the first motor drives the first pulley to rotate, and then transmits power to the second pulley through the transmission belt, driving the operation of the transmission belt. Since the splint is fixed on one side of the transmission belt, when the transmission belt runs, the splint can also move accordingly, thereby realizing precise lifting and lowering of the splint.

[0017] Furthermore, the detection assembly also includes a fixed plate, a first support plate, a second support plate, a second motor, a main shaft, and a torque sensor. The fixed plate is fixed on one side of the clamping plate, the first support plate and the second support plate are spaced apart and arranged on one side of the fixed plate, the second motor is fixed on the first support plate, and the driving end of the second motor passes through the first support plate, and the torque sensor is fixedly connected to the driving end of the second motor.

[0018] Furthermore, one end of the main shaft is fixed on the torque sensor, and the other end of the main shaft passes through the second support plate, and the screw probe is coaxially arranged on the other end of the main shaft.

[0019] The beneficial effect of adopting the above-mentioned further scheme is that when the splint moves downward under the drive of the transmission belt, the fixed plate also drops down, so that the screw probe has the power to penetrate into the nut hole of the workpiece. At the same time, the second motor drives the torque sensor, the spindle and the screw probe to rotate. When the screw probe enters the nut, if the internal thread of the nut is not damaged, the screw probe can automatically screw in and out of the nut. If the internal thread of the nut is damaged, the screw probe stops rotating, and the torque sensor senses the signal that the screw probe stops, and judges that the internal thread of the nut is damaged accordingly.

[0020] Furthermore, a bearing is provided between the outside of the main shaft and the second support plate.

[0021] Furthermore, the magnetized object is an electromagnet. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the overall structure of the utility model from another perspective;

[0024] Figure 3 It is a side cross-sectional schematic diagram of the support fixture of the present invention.

[0025] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0026] 10. Frame, 101. Base, 102. Cantilever, 20. Lifting module, 201. Power compartment, 202. First motor, 203. First pulley, 204. Second pulley, 205. Drive belt, 206. Clamp, 30. Detection assembly, 301. Fixed plate, 302. First support plate, 303. Second support plate, 304. Second motor, 305. Torque sensor, 306. Spindle, 307. Screw probe, 40. Support fixture, 401. Loading plate, 402. Magnetized object, 403. Main support column, 404. Auxiliary support column, 405. Fixing hole, 406. Avoidance hole, 407. Limit pin, 50. Bearing. DETAILED DESCRIPTION

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0028] In the prior art, nuts are usually fixed to workpieces by welding, and the welding process may cause damage to the internal threads of the nut. In order to detect whether the internal threads of the nut on the workpiece are damaged, an internal thread detection machine is usually used for thread detection. To ensure the accuracy of the detection, the workpiece needs to be accurately positioned on the base of the detection machine, and the aperture of the nut needs to be coaxial with the screw on the detection machine.

[0029] However, existing workpiece positioning jigs typically use a pin that penetrates a hole in the workpiece and is fixed to a base. Because the shapes and hole positions of different workpieces vary, each time a new workpiece is tested, a new fixing hole for the pin must be drilled in the base according to the hole position on the workpiece. This process is not only time-consuming and labor-intensive, but also easily leads to inaccurate or unstable positioning, thus affecting the accuracy and efficiency of the test results. The inventors have proposed a thread detection machine to address this problem.

[0030] The utility model provides the following preferred embodiments

[0031] like Figure 1 、 Figure 2 and Figure 3 As shown, a thread detection machine includes:

[0032] The frame 10 includes a base 101 and a cantilever 102, wherein the cantilever 102 is fixed to the top of the base 101;

[0033] The lifting module 20 is arranged on the frame 10;

[0034] A detection assembly 30 for detecting whether the internal thread of the workpiece is complete. The detection assembly 30 is arranged on the lifting end of the lifting module 20, wherein the detection assembly 30 includes a rotatable screw probe 307;

[0035] A support fixture 40 for carrying a workpiece for inspection below the inspection assembly 30, the support fixture 40 includes a support plate 401, a magnet 402, at least one main support column 403, and a plurality of auxiliary support columns 404, the support plate 401 is fixed on the base 101, the magnet 402 is arranged inside the support plate 401, a fixing hole 405 is opened on the support plate 401 along the axis direction of the screw probe 307, the main support column 403 is inserted into the fixing hole 405 of the support plate 401, wherein a avoidance hole 406 is opened on the top of the main support column 403, and the wall avoidance hole is coaxial with the screw probe 307, and the plurality of auxiliary support columns 404 are magnetically attracted to any position on the support plate 401, and a limit pin 407 is fixedly connected to the top of each auxiliary support column 404, and the main support column 403 and the auxiliary support column 404 are respectively set as a metal main support column 403 and a metal auxiliary support column 404 that can be magnetically attracted (the metal can be iron or steel);

[0036] The detection machine is provided with a carrying plate 401 on the base 101, and a magnet 402 is provided in the carrying plate 401. The magnetic attraction force generated by the magnet 402 is used to enable the main supporting column 403 and the auxiliary supporting column 404 to be magnetically fixed at any position on the carrying plate 401 as needed. The carrying plate 401 is preset with a fixing hole 405 along the axis direction of the screw probe 307. The main supporting column 403 is fixed in advance through the fixing hole 405, so that the avoidance hole 406 on the main supporting column 403 is coaxial with the screw probe 307, and the nut hole on the workpiece is coaxial with the avoidance hole 406. In this way, after ensuring that the nut hole on the workpiece is accurately aligned with the screw probe 307, the position of the nut hole of the workpiece on the carrying plate 401 is determined in advance, and then according to the position of different openings on the workpiece, the auxiliary supporting column 404 is magnetically attracted to the corresponding position on the carrying plate 401, and then the limit pin 407 on the top of the auxiliary supporting column 404 is used to pass through the opening on the workpiece to complete the positioning and fixing of the workpiece.

[0037] In summary, the use of magnetic fixation can flexibly adjust the opening position according to different workpieces, eliminating the previous tedious operation of pre-drilling holes on the supporting plate 401 to fix the main and auxiliary support columns 404, saving time and labor costs, greatly improving the versatility and flexibility of the equipment, and also improving detection efficiency.

[0038] In this embodiment, Figure 1 、 Figure 2 and Figure 3As shown, the lifting module 20 includes a power bin 201, a first motor 202, a first pulley 203, a second pulley 204, a transmission belt 205, and a clamping plate 206. The power bin 201 is fixed to one side of the cantilever 102, and the first motor 202 is fixed to the outer side of the power bin 201. The driving end of the first motor 202 passes through the power bin 201 and extends into the power bin 201. The first pulley 203 and the second pulley 204 are respectively rotatably connected to the top and bottom of the power bin 201 through a rotating shaft, wherein the first pulley 203 is connected to the driving end of the first motor 202, and the transmission belt 205 is assembled on the outside of the first pulley 203 and the second pulley 204, and the clamping plate 206 is fixed to one side of the transmission belt 205.

[0039] The first motor 202 drives the first pulley 203 to rotate, and then transmits power to the second pulley 204 through the transmission belt 205, driving the operation of the transmission belt 205. Since the splint 206 is fixed to one side of the transmission belt 205, when the transmission belt 205 is running, the splint 206 can also move accordingly, thereby realizing the precise lifting and lowering of the splint 206.

[0040] In this embodiment, Figure 1 、 Figure 2 and Figure 3 As shown, the detection assembly 30 also includes a fixed plate 301, a first support plate 302, a second support plate 303, a second motor 304, a spindle 306, and a torque sensor 305. The fixed plate 301 is fixed to one side of the clamping plate 206, the first support plate 302 and the second support plate 303 are spaced apart and arranged on one side of the fixed plate 301, the second motor 304 is fixed on the first support plate 302, and the driving end of the second motor 304 passes through the first support plate 302, the torque sensor 305 is fixedly connected to the driving end of the second motor 304, one end of the spindle 306 is fixed to the torque sensor 305, and the other end of the spindle 306 passes through the second support plate 303, and the screw probe 307 is coaxially arranged on the other end of the spindle 306;

[0041] When the splint 206 moves downward driven by the transmission belt 205, the fixed plate 301 also drops accordingly, so that the screw probe 307 has the power to penetrate into the nut hole of the workpiece. At the same time, the second motor 304 drives the torque sensor 305, the spindle 306 and the screw probe 307 to rotate. When the screw probe 307 enters the nut, if the internal thread of the nut is not damaged, the screw probe 307 can automatically screw in and out of the nut. If the internal thread of the nut is damaged, the screw probe 307 stops rotating, and the torque sensor 305 senses the signal that the screw probe 307 stops, and judges that the internal thread of the nut is damaged accordingly.

[0042] In this embodiment, Figure 1 、 Figure 2 and Figure 3 As shown, a bearing 50 is provided between the outside of the main shaft 306 and the second support plate 303 .

[0043] In this embodiment, Figure 1 、 Figure 2 and Figure 3 As shown, the magnetized object 402 is an electromagnet.

[0044] The specific working process of this utility model is as follows:

[0045] By arranging a carrying plate 401 on the base 101 and providing a magnetized object 402 in the carrying plate 401, the magnetic attraction force generated by the electromagnet is used to enable the main supporting column 403 and the auxiliary supporting column 404 to be magnetically fixed at any position on the carrying plate 401 as needed, and a fixing hole 405 along the axial direction of the screw probe 307 is preset on the carrying plate 401. The main supporting column 403 is fixed in advance through the fixing hole 405, so that the avoidance hole 406 on the main supporting column 403 is coaxial with the screw probe 307, and then the nut hole on the workpiece is coaxial with the avoidance hole 406. In this way, after ensuring that the nut hole on the workpiece is accurately aligned with the screw probe 307, the position of the nut hole of the workpiece on the carrying plate 401 is determined in advance, and then according to the position of different openings on the workpiece, the auxiliary supporting column 404 is magnetically attracted to the corresponding position on the carrying plate 401, and then the limit pin 407 on the top of the auxiliary supporting column 404 is used to pass through the opening on the workpiece to complete the positioning and fixation of the workpiece.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A thread detection machine, characterized in that: include: A frame, the frame comprising a base and a cantilever, the cantilever being fixed to the top of the base; A lifting module, wherein the lifting module is arranged on the frame; A detection component for detecting whether the internal thread of the workpiece is complete, wherein the detection component is arranged on the lifting end of the lifting module, wherein the detection component includes a rotatable screw probe; A support fixture for carrying a workpiece for inspection under a detection component, the support fixture includes a support plate, a magnet, at least one main support column, and a plurality of auxiliary support columns, the support plate is fixed on a base, the magnet is arranged inside the support plate, a fixing hole is provided along the axial direction of the screw probe and on the support plate, the main support column is inserted into the fixing hole of the support plate, wherein a avoidance hole is provided on the top of the main support column, and the wall avoidance hole is coaxial with the screw probe, the plurality of auxiliary support columns are magnetically attracted to any position on the support plate, each auxiliary support column is fixedly connected to a limiting pin on the top, and the main support column and the auxiliary support column are respectively provided as a metal main support column and a metal auxiliary column that can be magnetically attracted.

2. A thread detection machine according to claim 1, characterized in that: The lifting module includes a power bin, a first motor, a first pulley, a second pulley, a transmission belt, and a clamping plate. The power bin is fixed on one side of the cantilever, the first motor is fixed on the outer side of the power bin, and the driving end of the first motor passes through the power bin and extends into the power bin.

3. A thread detection machine according to claim 2, characterized in that: The first pulley and the second pulley are respectively rotatably connected to the top and bottom of the power compartment through a rotating shaft, wherein the first pulley is connected to the driving end of the first motor, and the transmission belt is assembled on the outside of the first pulley and the second pulley, and the splint is fixed on one side of the transmission belt.

4. A thread detection machine according to claim 3, characterized in that: The detection assembly also includes a fixed plate, a first support plate, a second support plate, a second motor, a main shaft, and a torque sensor. The fixed plate is fixed on one side of the clamping plate, the first support plate and the second support plate are spaced apart and arranged on one side of the fixed plate, the second motor is fixed on the first support plate, and the driving end of the second motor passes through the first support plate, and the torque sensor is fixedly connected to the driving end of the second motor.

5. A thread detection machine according to claim 4, characterized in that: One end of the main shaft is fixed on the torque sensor, and the other end of the main shaft passes through the second supporting plate. The screw probe is coaxially arranged on the other end of the main shaft.

6. A thread detection machine according to claim 5, characterized in that: A bearing is provided between the outer portion of the main shaft and the second support plate.

7. A thread detection machine according to claim 1, characterized in that: The magnetized object is an electromagnet.

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