Nut phase detection device

Abstract

The utility model discloses a nut phase detection device, which relates to the technical field of nut detection devices and comprises a workbench, a locking mechanism, a movable part and a testing mechanism. The locking mechanism is arranged on the workbench and is used for fixing a to-be-tested nut; the movable part is movably arranged on the workbench and located on one side of the locking mechanism. The testing mechanism is arranged on the movable part so as to move along with the movable part, the testing mechanism comprises a testing instrument, a testing rod and a telescopic meter hand, and the testing rod is provided with a testing head; when the movable part moves to enable the measuring rod to be inserted into the to-be-measured nut and the measuring head of the measuring rod is clamped into the to-be-measured nut and is close to the thread groove of the end face of the to-be-measured nut, the pointer abuts against the end face of the to-be-measured nut, and the testing instrument reads the phase value. According to the technical scheme provided by the utility model, the nut phase detection device which is easy to operate and high in measurement precision is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of nut detection devices, in particular to a nut phase detection device. Background Art

[0002] Ball screw nut phase detection is one of the key technologies for screw processing capability and is an indispensable measuring tool for screw shafts (screws), nuts, and precision assembly. When the screw nut is processed on a machine tool, the screw nut needs to rely on a nut phase detection device to measure the relative position of the thread groove.

[0003] In the related art, the traditional nut phase detection device requires manual fixation of the nut to be tested, which is difficult to operate and has low measurement accuracy. Utility Model Content

[0004] The main purpose of the utility model is to provide a nut phase detection device, aiming to provide a nut phase detection device which is easy to operate and has high measurement accuracy.

[0005] In order to achieve the above-mentioned purpose, the utility model proposes a nut phase detection device, comprising:

[0006] Workbench;

[0007] A locking mechanism, which is arranged on the workbench and is used to fix the nut to be tested;

[0008] A movable part, which is movably disposed on the workbench and located on one side of the locking mechanism;

[0009] A testing mechanism, the testing mechanism is arranged on the movable part to move with the movable part, the testing mechanism comprises a testing instrument, a measuring rod and a retractable needle, and the measuring rod is provided with a measuring head;

[0010] The movable part moves so that the measuring rod is inserted into the nut to be measured and the measuring head of the measuring rod is clamped into the thread groove of the nut to be measured close to the end face of the nut to be measured, the needle abuts against the end face of the nut to be measured, and the test instrument reads the phase value.

[0011] In one embodiment, a calibration block is further provided on the workbench, and the calibration block is provided with a calibration groove and a calibration plane. When the movable part moves so that the probe is inserted into the calibration groove, the needle abuts against the calibration plane.

[0012] In one embodiment, the center line of the calibration groove is flush with the calibration plane, and when the probe is inserted into the calibration groove and the needle abuts against the calibration plane, the value of the test instrument is reset to zero.

[0013] In one embodiment, the workbench is provided with a first track, the extension direction of the first track is parallel to the plane where the end surface of the nut to be measured is located, and the first track is provided with a first slider that slidably cooperates with the first track;

[0014] The first slider is connected to a second track, the extension direction of the second track is parallel to the axial direction of the measuring rod, and the movable part is provided with a second slider, and the second slider is slidably matched with the second track.

[0015] In one embodiment, the movable member is provided with a handle.

[0016] In one embodiment, the locking mechanism comprises:

[0017] A mounting seat, wherein the mounting seat is provided with a mounting groove, and the mounting groove is used to place the nut to be tested;

[0018] A locking piece is movably disposed on the mounting seat and is used to fix the nut to be tested in the mounting groove.

[0019] In one embodiment, the locking member passes through the mounting slot from the outside of the mounting seat and is threadedly connected to the mounting seat. When the locking member rotates, it can move toward or away from the mounting slot to tighten or release the nut to be tested.

[0020] In one embodiment, the movable member comprises:

[0021] A movable plate, the movable plate being movably arranged on the workbench;

[0022] A mounting block is arranged on the plate surface of the movable plate, and the testing mechanism is arranged on the mounting block.

[0023] In one embodiment, the mounting block comprises:

[0024] A first mounting block, wherein the first mounting block is disposed on a plate surface of the movable plate, and the measuring rod is mounted on the first mounting block;

[0025] The second mounting block is connected to the first mounting block, the test meter and the needle are both mounted on the second mounting block, and the second mounting block can move relative to the first mounting block along the direction from the needle to the measuring rod.

[0026] In one embodiment, a rotatable baffle is provided on the movable member, and the baffle has a first position and a second position;

[0027] When the baffle is in the first position, the end of the watch hand abuts against the baffle; when the baffle is in the second position, the baffle releases the watch hand.

[0028] The technical solution of the utility model adopts a novel nut phase detection device to perform phase detection on the nut to be tested. First, a locking mechanism is used to fix the nut to be tested. Then, under the movement of the movable part, the measuring rod of the testing mechanism can be driven to insert into the nut to be tested, and the measuring head is clamped into the thread groove of the nut to be tested close to the end face of the nut to be tested. At this time, the needle abuts against the end face of the nut to be tested, and the test instrument reads the phase value to obtain the phase value of the nut to be tested. Therefore, there is no need to manually fix the nut to be tested during the detection process, the operation is easier, and the measurement accuracy is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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 the structures shown in these drawings without paying creative work.

[0030] Figure 1 A top view of an embodiment of a nut phase detection device provided by the utility model during calibration;

[0031] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0032] Figure 3 A top view of an embodiment of a nut phase detection device provided by the utility model during detection;

[0033] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0034] Figure 5 A schematic structural diagram of a nut phase detection device provided by the utility model in a first embodiment during calibration;

[0035] Figure 6 A schematic structural diagram of another perspective of an embodiment of a nut phase detection device provided by the utility model during calibration;

[0036] Figure 7 A structural schematic diagram of another perspective of an embodiment of a nut phase detection device provided by the utility model during calibration.

[0037] Description of Figure Numbers:

[0038]

[0039]

[0040] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] 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 in 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.

[0042] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0044] Ball screw nut phase detection is one of the key technologies for screw processing capability and is an indispensable measuring tool for screw shafts (screws), nuts, and precision assembly. When the screw nut is processed on a machine tool, the screw nut needs to rely on a nut phase detection device to measure the relative position of the thread groove.

[0045] In the related art, the traditional nut phase detection device requires manual fixation of the nut to be tested, which is difficult to operate and has low measurement accuracy.

[0046] Based on the above problems, the utility model proposes a nut phase detection device which is easy to operate and has high measurement accuracy.

[0047] See also Figures 1 to 7In one embodiment of the utility model, the nut phase detection device 100 includes a workbench 10, a locking mechanism 20, a movable part 30 and a testing mechanism 40; the locking mechanism 20 is arranged on the workbench 10, and is used to fix the nut 200 to be tested; the movable part 30 is movably arranged on the workbench 10, and is located on one side of the locking mechanism 20; the testing mechanism 40 is arranged on the movable part 30 to move with the movable part 30, and the testing mechanism 40 includes a testing instrument 41, a measuring rod 42 and a retractable needle 43, and the measuring rod 42 is provided with a measuring head 421.

[0048] The movable part 30 moves so that the measuring rod 42 is inserted into the nut 200 to be tested, and the probe 421 of the measuring rod 42 is clamped into the thread groove 210 of the nut 200 to be tested close to the end face of the nut 200 to be tested, the needle 43 abuts against the end face of the nut 200 to be tested, and the test instrument 41 reads the phase value.

[0049] The technical solution of the utility model adopts a new type of nut phase detection device 100 to perform phase detection on the nut 200 to be tested. First, the locking mechanism 20 is used to fix the nut 200 to be tested. Then, under the movement of the movable part 30, the measuring rod 42 of the testing mechanism 40 can be driven to insert into the nut 200 to be tested, and the measuring head 421 is inserted into the thread groove 210 of the nut 200 to be tested close to the end face of the nut 200 to be tested. At this time, the needle 43 abuts against the end face of the nut 200 to be tested, and the test instrument 41 reads the phase value to obtain the phase value of the nut 200 to be tested. Therefore, there is no need to manually fix the nut 200 to be tested during the detection process, the operation is easier, and the measurement accuracy is higher.

[0050] It should be noted that, when the measuring rod 42 is inserted into the nut 200 to be measured and the measuring head 421 is inserted into the thread groove 210 of the measuring nut close to the end face of the nut 200 to be measured, after the needle 43 abuts against the end face of the nut 200 to be measured, the distance contracted by the needle 43 indicates the phase value of the nut 200 to be measured. During the measurement process, the distance from the first thread groove 210 of the nut 200 to the end face of the nut 200 to be measured is measured to determine whether the thread phase of the nut 200 to be measured is correct.

[0051] As some examples, the workbench 10 is a structure that provides support for structural members such as the locking mechanism 20, the movable member 30, and the testing mechanism 40. The workbench 10 may include a base plate and a support platform, the support platform is mounted on the base plate, the locking mechanism 20 is mounted on the support platform, and the movable member 30 is mounted on the base plate and located on one side of the support platform.

[0052] In actual application, the locking mechanism 20 can specifically fix the nut 200 to be tested by means of compression, adsorption, etc.

[0053] In actual application, the movable part 30 can move horizontally on the workbench 10, rotate on the workbench 10, or rise and fall on the workbench 10, as long as it can drive the testing mechanism 40 to move during the movement so that the measuring rod 42 is inserted into the nut 200 to be tested, and the measuring head 421 is stuck in the thread groove 210 of the nut 200 to be tested close to the end face of the nut 200 to be tested, and the needle 43 abuts against the end face of the nut 200 to be tested.

[0054] See also Figure 2 In one embodiment of the utility model, a calibration block 50 is further provided on the workbench 10 , and the calibration block 50 has a calibration groove 51 and a calibration plane 52 . When the movable member 30 moves so that the probe 421 is inserted into the calibration groove 51 , the needle 43 abuts against the calibration plane 52 .

[0055] With such arrangement, before measurement, the test mechanism 40 is first driven to move by the movable part 30, so that when the probe 421 is inserted into the calibration groove 51, the needle 43 abuts against the calibration plane 52, so as to calibrate the relative position of the measuring rod 42 and the needle 43, thereby further improving the phase detection accuracy of the nut 200 to be measured.

[0056] As some exemplary embodiments, the calibration block 50 and the probe 421 are detachable structures, so that the calibration block 50 and the probe 421 can be quickly replaced according to the ball diameters of different nuts 200 to be measured, which has high flexibility in use.

[0057] In actual application, the center line of the calibration groove 51 may be flush with the calibration plane 52 or not. When the center line of the calibration groove 51 is not flush with the calibration plane 52, the distance between the center line of the calibration groove 51 and the calibration plane 52 is the initial value displayed by the test meter 41 at this time, and the difference between the value obtained after measurement and the initial value is the phase value of the nut 200 to be tested.

[0058] See also Figure 2 In one embodiment of the present invention, the center line of the calibration slot 51 is flush with the calibration plane 52, and when the probe 421 is inserted into the calibration slot 51 and the needle 43 abuts against the calibration plane 52, the value of the test instrument 41 is reset.

[0059] In this way, by making the center line of the calibration slot 51 flush with the calibration plane 52, when the probe 421 is inserted into the calibration slot 51 and the needle 43 abuts against the calibration plane 52, the value of the test meter 41 is cleared, so that the initial value of the test meter 41 is zero. Then, the value obtained after the measurement is the phase value of the nut 200 to be tested, and there is no need to perform difference conversion, so that the user can obtain the phase value of the nut 200 to be tested more intuitively.

[0060] See also Figure 1In one embodiment of the present invention, the calibration block 50 is located on one side of the locking mechanism 20 .

[0061] In this way, by setting the calibration block 50 on one side of the locking mechanism 20, not only can the distribution of the structure be made more compact, but also after the needle 43 is calibrated, the test mechanism 40 can be directly driven to move horizontally through the movable part 30, so that the measuring rod 42 can smoothly enter the nut 200 to be tested, and the needle 43 can abut against the end face of the nut 200 to be tested, so that the movement path of the movable part 30 is shorter and the measurement efficiency is higher.

[0062] See also Figure 5 , Figure 7 In one embodiment of the utility model, the workbench 10 is provided with a first track 11, the extension direction of the first track 11 is parallel to the plane where the end face of the nut 200 to be measured is located, and the first track 11 is provided with a first slider 12 that slides with the first track 11; the first slider 12 is connected to the second track 13, the extension direction of the second track 13 is parallel to the axial direction of the measuring rod 42, and the movable part 30 is provided with a second slider 14, and the second slider 14 slides with the second track 13.

[0063] With such arrangement, during the calibration process, the movable part 30 can be moved to the front of the calibration block 50 under the cooperation of the first track 11 and the first slider 12, and then moved toward the calibration block 50 under the cooperation of the second track 13 and the second slider 14, until the probe 421 is inserted into the calibration groove 51 and the needle 43 abuts against the calibration plane 52, so as to complete the calibration. During the measurement process, the movable part 30 can be moved away from the calibration block 50 under the cooperation of the second track 13 and the second slider 14, so that the measuring rod 42 and the needle 43 are separated from the calibration block 50, and then moved to the front of the nut 200 to be measured under the cooperation of the first track 11 and the first slider 12, and then moved toward the nut 200 to be measured under the cooperation of the second track 13 and the second slider 14, until the measuring rod 42 is inserted into the nut 200 to be measured, and the probe 421 is inserted into the thread groove 210 of the nut 200 to be measured, and the needle 43 abuts against the end face of the nut 200 to be measured, at which time the test meter 41 reads the phase value to complete the phase measurement.

[0064] See also Figures 5 to 7 In one embodiment of the present invention, the movable member 30 is provided with a handle 30a.

[0065] With such a configuration, the user can directly hold the handle 30a to drive the movable member 30 to move, thereby driving the testing mechanism 40 to move to a desired position without the need to additionally configure a mechanical driving structure, thereby reducing costs.

[0066] See also Figure 3In one embodiment of the utility model, the locking mechanism 20 includes a mounting seat 21 and a locking member 22; the mounting seat 21 is provided with a mounting groove 211, and the mounting groove 211 is used to place the nut 200 to be tested; the locking member 22 is movably provided on the mounting seat 21, and is used to fix the nut 200 to be tested in the mounting groove 211.

[0067] With such arrangement, before measurement, the nut 200 to be measured is first placed in the mounting groove 211 , and then the nut 200 to be measured is locked in the mounting groove 211 by the locking member 22 , which can improve the fixing reliability of the nut 200 to be measured.

[0068] See also Figure 3 In one embodiment of the utility model, the locking member 22 passes through the mounting groove 211 from the outer side of the mounting seat 21 and is threadedly connected to the mounting seat 21. When the locking member 22 rotates, it can move toward or away from the mounting groove 211 to tighten or release the nut 200 to be tested.

[0069] With such arrangement, when it is necessary to fix the nut 200 to be tested, the nut 200 to be tested can be better locked in the mounting groove 211 by tightening the locking piece 22 so that the locking piece 22 moves toward the mounting groove 211 while rotating; when it is necessary to remove the nut 200 to be tested, the nut 200 to be tested can be released by loosening the locking piece 22 so that the locking piece 22 moves away from the mounting groove 211 while rotating, thereby making the operation easier.

[0070] See also Figure 5 , Figure 7 In one embodiment of the utility model, the movable member 30 includes a movable plate 31 and a mounting block 32 ; the movable plate 31 is movably disposed on the workbench 10 ; the mounting block 32 is disposed on the plate surface of the movable plate 31 , and the testing mechanism 40 is disposed on the mounting block 32 .

[0071] With such arrangement, by installing the test mechanism 40 on the mounting block 32, the installation of the test mechanism 40 is more convenient, and the test mechanism 40 can be installed at a higher position so that the measuring rod 42 and the needle 43 are on the same horizontal plane as the calibration block 50 and the nut 200 to be tested, thereby better realizing calibration and measurement.

[0072] Exemplarily, the movable plate 31 and the mounting block 32 may be an integrally formed structure, which can not only ensure the installation reliability between the movable plate 31 and the mounting block 32 but also simplify the manufacturing process.

[0073] See also Figure 7In one embodiment of the utility model, the mounting block 32 includes a first mounting block 321 and a second mounting block 322; the first mounting block 321 is arranged on the plate surface of the movable plate 31, and the measuring rod 42 is installed on the first mounting block 321; the second mounting block 322 is connected to the first mounting block 321, and the test instrument 41 and the needle 43 are both installed on the second mounting block 322, and the second mounting block 322 can move relative to the first mounting block 321 along the direction from the needle 43 to the measuring rod 42.

[0074] With such arrangement, during the installation process, the measuring rod 42 can be installed on the first mounting block 321, and the test instrument 41 and the needle 43 can be installed on the second mounting block 322. Since the second mounting block 322 can be moved relative to the first mounting block 321 along the direction from the needle 43 to the measuring rod 42, the distance between the measuring rod 42 and the needle 43 can be adjusted under the movement of the second mounting block 322 to adapt to nuts 200 to be tested of different sizes.

[0075] In this embodiment, a strip-shaped mounting hole is provided on the second mounting block 322, so that the second mounting block 322 can be installed on the first mounting block 321 through the cooperation of a pin and the strip-shaped mounting hole. At the same time, the relative position between the second mounting block 322 and the first mounting block 321 can be adjusted under the setting of the strip-shaped mounting hole, thereby adjusting the distance between the measuring rod 42 and the needle 43.

[0076] See also Figure 6 In one embodiment of the utility model, a rotatable baffle 33 is provided on the movable member 30, and the baffle 33 has a first position and a second position; when the baffle 33 is in the first position, the end of the pointer 43 abuts against the baffle 33; when the baffle 33 is in the second position, the baffle 33 releases the pointer 43.

[0077] With such arrangement, since the needle 43 is easily scratched against other parts during the movement of the movable part 30, thereby easily damaging the needle 43, a baffle 33 is provided on the movable part 30. When the needle 43 needs to move, the baffle 33 can be moved to the first position to support the end of the needle 43 through the baffle 33 to protect the needle 43; when the needle 43 needs to be calibrated or measured, the baffle 33 can be moved to the second position to release the needle 43.

[0078] In addition, by rotatably connecting the baffle plate 33 to the movable member 30 , it can be ensured that the baffle plate 33 is more stable when switching between the first position and the second position.

[0079] See also Figure 6In one embodiment of the utility model, the baffle 33 is provided with an avoidance opening 331; when the baffle 33 is in the first position, the baffle 33 is partially located on the side of the measuring rod 42 close to the needle 43, and the avoidance opening 331 is used to avoid the measuring rod 42; when the baffle 33 is in the second position, the baffle 33 is located on the side of the measuring rod 42 away from the needle 43.

[0080] With such arrangement, when the needle 43 needs to move, the baffle 33 is pushed down to move the baffle 33 to the first position. At this time, the avoidance opening 331 on the baffle 33 is used to avoid the measuring rod 42, so that the baffle 33 is partially located on the side of the measuring rod 42 close to the needle 43, so that the end of the needle 43 can be supported by this part of the baffle 33; when the needle 43 needs to be calibrated or measured, the baffle 33 is pushed up to move the baffle 33 to the second position. At this time, the baffle 33 is located on the side of the measuring rod 42 away from the needle 43 to release the needle 43.

[0081] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A nut phase detection device, characterized in that: include: Workbench; A locking mechanism, which is arranged on the workbench and is used to fix the nut to be tested; A movable part, which is movably disposed on the workbench and located on one side of the locking mechanism; A testing mechanism, the testing mechanism is arranged on the movable part to move with the movable part, the testing mechanism comprises a testing instrument, a measuring rod and a retractable needle, and the measuring rod is provided with a measuring head; The movable part moves so that the measuring rod is inserted into the nut to be measured and the measuring head of the measuring rod is clamped into the thread groove of the nut to be measured close to the end face of the nut to be measured, the needle abuts against the end face of the nut to be measured, and the test instrument reads the phase value.

2. The nut phase detection device according to claim 1, characterized in that: The workbench is also provided with a calibration block, which is provided with a calibration groove and a calibration plane. When the movable part moves so that the probe is inserted into the calibration groove, the needle abuts against the calibration plane.

3. The nut phase detection device according to claim 2, characterized in that: The center line of the calibration groove is flush with the calibration plane. When the probe is inserted into the calibration groove and the needle abuts against the calibration plane, the value of the test instrument is reset.

4. The nut phase detection device according to any one of claims 2 to 3, characterized in that: The workbench is provided with a first track, the extension direction of the first track is parallel to the plane where the end surface of the nut to be tested is located, and the first track is provided with a first sliding block that slidably cooperates with the first track; The first slider is connected to a second track, the extension direction of the second track is parallel to the axial direction of the measuring rod, and the movable part is provided with a second slider, and the second slider is slidably matched with the second track.

5. The nut phase detection device according to claim 4, characterized in that: The movable part is provided with a handle.

6. The nut phase detection device according to any one of claims 1 to 3, characterized in that: The locking mechanism comprises: A mounting seat, wherein the mounting seat is provided with a mounting groove, and the mounting groove is used to place the nut to be tested; A locking piece is movably disposed on the mounting seat and is used to fix the nut to be tested in the mounting groove.

7. The nut phase detection device according to claim 6, characterized in that: The locking member passes through the mounting groove from the outer side of the mounting seat and is threadedly connected to the mounting seat. When the locking member rotates, it can move toward or away from the mounting groove to tighten or release the nut to be tested.

8. The nut phase detection device according to any one of claims 1 to 3, characterized in that: The movable parts include: A movable plate, the movable plate being movably arranged on the workbench; A mounting block is arranged on the plate surface of the movable plate, and the testing mechanism is arranged on the mounting block.

9. The nut phase detection device according to claim 8, characterized in that: The mounting block comprises: A first mounting block, wherein the first mounting block is disposed on a plate surface of the movable plate, and the measuring rod is mounted on the first mounting block; The second mounting block is connected to the first mounting block, the test meter and the needle are both mounted on the second mounting block, and the second mounting block can move relative to the first mounting block along the direction from the needle to the measuring rod.

10. The nut phase detection device according to any one of claims 1 to 3, characterized in that: The movable member is provided with a rotatable baffle, and the baffle has a first position and a second position; When the baffle is in the first position, the end of the watch hand abuts against the baffle; when the baffle is in the second position, the baffle releases the watch hand.

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