Coaxiality detection device for machine tool screw assembly and machine tool screw assembly
The detection device, which combines a laser transceiver unit and a rotating fixture, solves the problem of accurate coaxiality detection of machine tool lead screw assemblies in confined spaces, and achieves high-precision coaxiality detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING JINGDIAO GRP CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-08-04
AI Technical Summary
In the existing technology, it is difficult to detect the coaxiality of the machine tool lead screw assembly in a confined space, which affects the accuracy of the reading.
A detection device combining a laser transceiver unit and a rotating fixture replaces the contact dial indicator, using a laser beam to detect the parallelism between the machine tool lead screw and guide rail, as well as the concentricity of each mounting base.
It improves detection accuracy, reduces the impact of operating space on detection, is easy to operate, and is suitable for coaxiality detection in confined spaces.
Smart Images
Figure CN224587581U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machine tool testing equipment technology, and in particular to a coaxiality testing device for a machine tool lead screw assembly and a machine tool lead screw assembly. Background Technology
[0002] The installation of the machine tool lead screw must ensure parallelism with the guide rail, as well as concentricity among the front bearing housing mounting base, the lead screw nut mounting base, and the rear bearing housing mounting base. Current technology uses a dial indicator, which needs to be fixed to a slider and moved along the guide rail to measure relevant positions. Space significantly affects the measurement results, and the greater the span between the two guide rails, the more difficult the measurement becomes. Therefore, dial indicator measurement is difficult to implement in confined spaces, affecting the accuracy of the readings. Utility Model Content
[0003] This invention provides a coaxiality detection device and a machine tool lead screw assembly, which solves the problem that the existing technology is difficult to implement in a small space, thus affecting the accuracy of the readings.
[0004] This utility model provides a machine tool lead screw assembly coaxiality detection device, comprising: The first detection unit includes: The first rotating tooling is rotatably connected to the front bearing housing mounting base; The first laser transceiver unit is mounted on the first rotating fixture; The second detection unit includes: The second rotating tooling is rotatably connected to the rear bearing housing mounting base; The second laser transceiver unit is mounted on the second rotating fixture. The third detection unit includes: The third rotating tool is rotatably connected to the nut seat; The third laser transceiver unit is mounted on the third rotating fixture; The fourth detection unit includes: A rotating shaft is rotatably connected to a slider on a guide rail; A laser receiving unit is mounted on the rotating shaft.
[0005] According to the machine tool lead screw assembly coaxiality detection device provided by this utility model, the first rotating fixture includes: The first connecting rod is connected at one end to the front bearing housing mounting seat; The first bearing is connected to the other end of the first connecting rod; The first rotating rod is connected to the first bearing.
[0006] According to the machine tool lead screw assembly coaxiality detection device provided by this utility model, the first detection unit further includes: The first dial, having a directional scale, is located on the first connecting rod and is used to indicate the rotation angle of the first rotating rod.
[0007] According to the machine tool lead screw assembly coaxiality detection device provided by this utility model, the second rotating fixture includes: The second connecting rod is connected at one end to the rear bearing housing mounting seat; The second bearing is connected to the other end of the second connecting rod; The second rotating rod is connected to the second bearing.
[0008] According to the machine tool lead screw assembly coaxiality detection device provided by this utility model, the second detection unit further includes: The second dial, having a directional scale, is located on the second connecting rod and is used to indicate the rotation angle of the second rotating rod.
[0009] According to the machine tool lead screw assembly coaxiality detection device provided by this utility model, the third rotary fixture includes: The third connecting rod is connected at one end to the nut seat; The third bearing is connected to the other end of the third connecting rod; The third rotating rod is connected to the third bearing.
[0010] According to the machine tool lead screw assembly coaxiality detection device provided by this utility model, the third detection unit further includes: The third dial, having a directional scale, is located on the third connecting rod and is used to indicate the rotation angle of the third rotating rod.
[0011] According to the machine tool lead screw assembly coaxiality detection device provided by this utility model, the fourth detection unit further includes: A clamping fixture is provided on the slider, and the rotating shaft is rotatably provided on the clamping fixture.
[0012] The coaxiality detection device for machine tool lead screw assembly provided by this utility model further includes: A ranging device is used to measure the distance between the first laser transceiver unit and the second laser transceiver unit, the distance between the first laser transceiver unit and the third laser transceiver unit, or the moving distance of the slider.
[0013] This utility model also provides a machine tool lead screw assembly, including: the coaxiality detection device for the machine tool lead screw assembly described above.
[0014] This utility model provides a coaxiality detection device for a machine tool lead screw assembly, comprising: a first detection unit, a second detection unit, a third detection unit, and a fourth detection unit. The first detection unit includes: a first rotating fixture and a first laser transceiver unit. The first rotating fixture is rotatably connected to a front bearing housing mounting base; the first laser transceiver unit is mounted on the first rotating fixture. The second detection unit includes: a second rotating fixture and a second laser transceiver unit. The second rotating fixture is rotatably connected to a rear bearing housing mounting base; the second laser transceiver unit is mounted on the second rotating fixture. The third detection unit includes: a third rotating fixture and a third laser transceiver unit. The third rotating fixture is rotatably connected to a lead screw nut seat; the third laser transceiver unit is mounted on the third rotating fixture. The fourth detection unit includes: a rotating shaft and a laser receiving unit. The rotating shaft is rotatably connected to a slider on a guide rail; the laser receiving unit is mounted on the rotating shaft. This utility model provides a machine tool lead screw assembly coaxiality testing device, which uses tooling in conjunction with laser equipment to replace the contact-type dial indicator in the prior art, so as to realize the parallelism detection of the machine tool lead screw and guide rail; it can also realize the concentricity detection of the front bearing housing mounting seat, lead screw nut seat and rear bearing housing mounting seat of the machine tool lead screw, which is beneficial to subsequent coaxiality adjustment; this device has high detection accuracy, convenient operation and is less affected by the operating space.
[0015] Furthermore, the machine tool lead screw assembly provided by this utility model has the same advantages as described above because it includes the coaxiality detection device for the machine tool lead screw assembly in the above embodiments of this utility model. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of the machine tool lead screw assembly coaxiality detection device provided in one embodiment of the present invention, when testing whether the bearing chamber and the guide rail are parallel.
[0018] Figure 2 This is a schematic diagram of the structure of the machine tool lead screw assembly coaxiality detection device provided in one embodiment of the present invention when detecting the coaxiality between the rear bearing chamber and the front bearing chamber.
[0019] Figure 3 This is a schematic diagram of the coaxiality detection device for a machine tool lead screw assembly provided in one embodiment of the present invention, which detects the coaxiality between the lead screw nut and the front bearing chamber.
[0020] Figure 4 This is a schematic diagram of the structure of the first detection unit provided in one embodiment of the present invention.
[0021] Figure 5 This is a schematic diagram of the structure of the fourth detection unit provided in one embodiment of the present invention.
[0022] Figure label: 11: First rotating fixture; 111: First connecting rod; 112: First bearing; 113: First rotating rod; 12: First laser transceiver unit; 21: Second rotating fixture; 22: Second laser transceiver unit; 31: Third rotating fixture; 32: Third laser transceiver unit; 41: Rotating shaft; 42: Laser receiving unit; 43: Clamping fixture; 51: Front bearing housing mounting base; 52: Rear bearing housing mounting base; 53: nut seat; 54: guide rail; 55: slider; X1: The distance the slider moves; X2: The distance between the first laser transceiver unit and the second laser transceiver unit; X3: The distance between the first laser transceiver unit and the third laser transceiver unit. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0024] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this embodiment and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this embodiment.
[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this embodiment, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0026] In this embodiment, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.
[0027] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0028] The following is combined with Figures 1-5 This invention describes a coaxiality testing device for a machine tool lead screw assembly. The device comprises a first testing unit, a second testing unit, a third testing unit, and a fourth testing unit.
[0029] The first detection unit includes a first rotating fixture 11 and a first laser transceiver unit 12. The first rotating fixture 11 is rotatably connected to the front bearing housing mounting base 51; the first laser transceiver unit 12 is disposed on the first rotating fixture 11.
[0030] The second detection unit includes a second rotating fixture 21 and a second laser transceiver unit 22. The second rotating fixture 21 is rotatably connected to the rear bearing housing mounting base 52; the second laser transceiver unit 22 is mounted on the second rotating fixture 21.
[0031] The third detection unit includes a third rotating fixture 31 and a third laser transceiver unit 32. The third rotating fixture 31 is rotatably connected to the wire nut 53; the third laser transceiver unit 32 is disposed on the third rotating fixture 31.
[0032] The fourth detection unit includes a rotating shaft 41 and a laser receiving unit 42. The rotating shaft 41 is rotatably connected to the slider 55 of the guide rail 54; the laser receiving unit 42 is disposed on the rotating shaft 41.
[0033] Specifically, the first detection unit is installed in the front bearing chamber, the second detection unit is installed in the rear bearing chamber, the third detection unit is installed on the worktable, and the fourth detection unit is installed on the slider 55 of the guide rail 54. The aforementioned laser transceiver units refer to devices capable of emitting and receiving laser signals. They generally include a laser transmitter (responsible for generating and emitting a laser beam), an optical system (used to focus and guide the laser beam to achieve the desired target or effect), a laser receiver (used to capture the laser signal reflected back from the target), a signal processor (which processes and analyzes the received electrical signals to extract useful information), and a control system (which manages the entire laser transceiver process, ensuring operational safety and accuracy). The laser receiver unit 42 only has the function of receiving laser signals.
[0034] Each of the aforementioned rotating fixtures has a rotation function and also has a clamping function for mounting the laser transceiver unit; the rotating shaft 41 has a rotation function, and the laser receiving unit 42 is mounted on the rotating shaft 41.
[0035] When using the machine tool lead screw assembly coaxiality testing device provided by this utility model for testing, the testing process is as follows: 1. For example Figure 1 As shown, the first rotating fixture 11 is mounted on the front bearing housing mounting base 51 (i.e., the front support), and the first laser transceiver unit 12 is mounted on the end face of the first rotating fixture 11; the rotating shaft 41 is mounted on the slider 55 of the guide rail 54, and the laser receiving unit 42 is mounted on the rotating shaft 41. By sliding the slider 55, the first laser transceiver unit 12 moves to a position close to the laser receiving unit 42, and the distance between the light spot and the target center is adjusted within the error range within a 180° rotation range of the first laser transceiver unit 12.
[0036] Move slider 55 to the first measurement position and acquire the laser beam position; rotate the first laser transceiver unit 12 180° and acquire the second laser beam position; move slider 55 to the second measurement position at the far end and acquire the third laser beam position; rotate the first laser transceiver unit 12 180° and acquire the fourth laser beam position. Check whether the positions of the four laser beams are within the tolerance range.
[0037] If the position of the front bearing housing mounting base 51 is not within the tolerance range, the above detection steps are repeated until the position of the laser beam is detected to be within the tolerance range, that is, the front bearing housing is parallel to the guide rail 54.
[0038] 2. For example Figure 2 As shown, the first rotating fixture 11 is mounted on the front bearing housing mounting base 51 (i.e., the front support), and the first laser transceiver unit 12 is mounted on the end face of the first rotating fixture 11; the second rotating fixture 21 is mounted on the rear bearing housing mounting base 52 (i.e., the rear support), and the second laser transceiver unit 22 is mounted on the end face of the second rotating fixture 21. The first rotating fixture 11 and the second rotating fixture 21 are rotated so that the laser beams emitted by the first laser transceiver unit 12 and the second laser transceiver unit 22 both fall on the target center of the other; then, the first rotating fixture 11 and the second rotating fixture 21 are rotated simultaneously, and the position of the laser beam is detected to be within the tolerance range; the detection is performed once every 120° rotation, for a total of three detections.
[0039] If the position of the rear bearing housing mounting base 52 is not within the tolerance range, the above detection steps are repeated until the position of the laser beam is within the tolerance range, that is, the coaxiality of the rear bearing housing and the front bearing housing meets the requirements.
[0040] 3. Similarly, as described above, such as... Figure 3 As shown, the coaxiality between the wire nut 53 and the front bearing housing can be detected and adjusted. The difference is that the third rotating fixture 31 needs to be installed on the wire nut 53, and the third laser transceiver unit 32 needs to be installed on the end face of the third rotating fixture 31. The detection and adjustment process is similar to the above method. If the detection result is within the tolerance range, the coaxiality between the wire nut 53 and the front bearing housing meets the requirements.
[0041] It should be understood that this device primarily addresses the shortcomings of existing contact-type dial indicators, which are greatly affected by space constraints. It is mainly used for coaxiality testing of machine tool lead screw assemblies, solving the coaxiality testing problem in existing technologies. As for post-test adjustments, existing methods can be used. For example, if the laser beam position is detected as not meeting tolerances, the corresponding equipment should be moved towards the target center. Then, the testing and adjustment should be repeated to reduce errors and ensure that the coaxiality meets requirements. For instance, if the laser receiving unit 42 detects that the laser beam emitted by the first laser transceiver unit 12 deviates downwards from the target center, the front bearing housing should be moved upwards.
[0042] This utility model provides a coaxiality detection device for a machine tool lead screw assembly, comprising: a first detection unit, a second detection unit, a third detection unit, and a fourth detection unit. The first detection unit includes: a first rotating fixture 11 and a first laser transceiver unit 12. The first rotating fixture 11 is rotatably connected to a front bearing housing mounting base 51; the first laser transceiver unit 12 is mounted on the first rotating fixture 11. The second detection unit includes: a second rotating fixture 21 and a second laser transceiver unit 22. The second rotating fixture 21 is rotatably connected to a rear bearing housing mounting base 52; the second laser transceiver unit 22 is mounted on the second rotating fixture 21. The third detection unit includes: a third rotating fixture 31 and a third laser transceiver unit 32. The third rotating fixture 31 is rotatably connected to a lead screw nut seat 53; the third laser transceiver unit 32 is mounted on the third rotating fixture 31. The fourth detection unit includes: a rotating shaft 41 and a laser receiving unit 42. The rotating shaft 41 is rotatably connected to the slider 55 of the guide rail 54; the laser receiving unit 42 is disposed on the rotating shaft 41. This utility model provides a machine tool lead screw assembly coaxiality detection device, which uses tooling in conjunction with laser equipment to replace the contact-type dial indicator in the prior art, realizing the parallelism detection of the machine tool lead screw and guide rail 54; realizing the concentricity detection of the front bearing housing mounting seat 51, lead screw nut seat 53, and rear bearing housing mounting seat 52 of the machine tool lead screw, which is beneficial for subsequent coaxiality adjustment; this device has high detection accuracy, is easy to operate, and is less affected by operating space.
[0043] In one embodiment of this utility model, the first rotating fixture 11 includes: a first connecting rod 111, a first bearing 112, and a first rotating rod 113. One end of the first connecting rod 111 is connected to the front bearing housing mounting base 51; the first bearing 112 is connected to the other end of the first connecting rod 111; and the first rotating rod 113 is connected to the first bearing 112. Specifically, the first connecting rod 111 is connected to the front bearing housing, that is, coaxially connected to the front bearing housing mounting base 51. The first rotating rod 113 achieves its rotation function relative to the first connecting rod 111 through the first bearing 112, thereby realizing the rotation of the first laser transceiver unit 12.
[0044] In one embodiment of this utility model, the first detection unit further includes: a first scale (not shown in the figure, but it can be fitted onto the first connecting rod), having directional markings and disposed on the first connecting rod 111, for marking the rotation angle of the first rotating rod 113. Specifically, a pointer can be set on the first rotating rod 113 near the first scale, and after the first rotating rod 113 rotates, the rotation angle of the first laser transceiver unit 12 can be easily observed through the pointer.
[0045] In one embodiment of this utility model, the second rotating fixture 21 includes: a second connecting rod, a second bearing, and a second rotating rod. One end of the second connecting rod is connected to the rear bearing housing mounting base 52; the second bearing is connected to the other end of the second connecting rod; and the second rotating rod is connected to the second bearing. The second detection unit further includes: a second scale with rotational markings, disposed on the second connecting rod, for marking the rotation angle of the second rotating rod. This embodiment is similar in structure and function to the above embodiments, except for the installation position, and therefore will not be described in detail.
[0046] In one embodiment of this utility model, the third rotating fixture 31 includes: a third connecting rod, a third bearing, and a third rotating rod. One end of the third connecting rod is connected to the nut seat 53; the third bearing is connected to the other end of the third connecting rod; and the third rotating rod is connected to the third bearing. The third detection unit further includes: a third dial with rotation scale, disposed on the third connecting rod, for marking the rotation angle of the third rotating rod. This embodiment is similar in structure and function to the above embodiments, except for the installation position, and therefore will not be described again.
[0047] In one embodiment of this utility model, the fourth detection unit further includes: a clamping fixture 43 disposed on the slider 55, and a rotating shaft 41 rotatably disposed on the clamping fixture 43. The clamping fixture 43 is mounted on the slider 55 and has a through hole for the rotating shaft 41 to be inserted to ensure the rotation of the rotating shaft 41.
[0048] In one embodiment of this utility model, the coaxiality detection device for the machine tool lead screw assembly further includes a distance measuring device for measuring the distance X2 between the first laser transceiver unit 12 and the second laser transceiver unit 22, the distance X3 between the first laser transceiver unit 12 and the third laser transceiver unit 32, or the moving distance X1 of the slider 55. The distance measuring device ensures that the distances between each laser transceiver unit and the laser receiving unit 42 meet the detection requirements during testing.
[0049] This utility model also provides a machine tool lead screw assembly. The machine tool lead screw assembly includes: the coaxiality detection device for the machine tool lead screw assembly described in the above embodiments of this utility model.
[0050] The machine tool lead screw assembly provided by this utility model has the same advantages as described above because it includes the coaxiality detection device for the machine tool lead screw assembly in the above embodiments of this utility model.
[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A coaxiality detection device for a machine tool lead screw assembly, characterized in that, include: The first detection unit includes: The first rotating tool (11) is rotatably connected to the front bearing housing mounting base (51). The first laser transceiver unit (12) is mounted on the first rotating fixture (11); The second detection unit includes: The second rotating tool (21) is rotatably connected to the rear bearing housing mounting base (52). The second laser transceiver unit (22) is mounted on the second rotating fixture (21); The third detection unit includes: The third rotating tool (31) is rotatably connected to the nut seat (53). The third laser transceiver unit (32) is mounted on the third rotating fixture (31); The fourth detection unit includes: A rotating shaft (41) is rotatably connected to a slider (55) of a guide rail (54); A laser receiving unit (42) is disposed on the rotating shaft (41).
2. The coaxiality detection device for machine tool lead screw assembly according to claim 1, characterized in that, The first rotating tooling (11) includes: The first connecting rod (111) is connected at one end to the front bearing housing mounting seat (51); The first bearing (112) is connected to the other end of the first connecting rod (111); The first rotating rod (113) is connected to the first bearing (112).
3. The coaxiality detection device for machine tool lead screw assembly according to claim 2, characterized in that, The first detection unit further includes: The first dial, having a directional scale, is located on the first connecting rod (111) and is used to indicate the rotation angle of the first rotating rod (113).
4. The coaxiality detection device for machine tool lead screw assembly according to claim 1, characterized in that, The second rotary tooling (21) includes: The second connecting rod is connected at one end to the rear bearing housing mounting base (52); The second bearing is connected to the other end of the second connecting rod; The second rotating rod is connected to the second bearing.
5. The coaxiality detection device for machine tool lead screw assembly according to claim 4, characterized in that, The second detection unit further includes: The second dial, having a directional scale, is located on the second connecting rod and is used to indicate the rotation angle of the second rotating rod.
6. The coaxiality detection device for machine tool lead screw assembly according to claim 1, characterized in that, The third rotary tooling (31) includes: The third connecting rod is connected at one end to the nut seat (53); The third bearing is connected to the other end of the third connecting rod; The third rotating rod is connected to the third bearing.
7. The coaxiality detection device for machine tool lead screw assembly according to claim 6, characterized in that, The third detection unit further includes: The third dial, having a directional scale, is located on the third connecting rod and is used to indicate the rotation angle of the third rotating rod.
8. The coaxiality detection device for machine tool lead screw assembly according to claim 1, characterized in that, The fourth detection unit further includes: A clamping fixture (43) is disposed on the slider (55), and the rotating shaft (41) is rotatably disposed on the clamping fixture (43).
9. The coaxiality detection device for a machine tool lead screw assembly according to any one of claims 1 to 8, characterized in that, Also includes: The ranging device is used to measure the distance (X2) between the first laser transceiver unit (12) and the second laser transceiver unit (22), the distance (X3) between the first laser transceiver unit (12) and the third laser transceiver unit (32), or the moving distance (X1) of the slider (55).
10. A machine tool lead screw assembly, characterized in that, include: The coaxiality detection device for machine tool lead screw assembly according to any one of claims 1 to 9.