A planetary roller screw pair profiler detection platform installation fixture

Abstract

The present invention discloses a planetary roller screw pair profiler detection platform mounting fixture, comprising a mounting base, a rotating platform, a special three-jaw punch former, and a tilting base; the lower surface of the mounting base is slidably engaged with the guide rail via a guide rail slider, the upper end surface of the mounting base is provided with a tilting base, and the tilting base is engaged with an arc-shaped slide groove on the tilting base fixing plate via tilting base adjustment handles on both sides; the upper end surface of the tilting base is provided with a rotating platform, and the lower surface of the rotating platform is rotationally engaged with the upper surface of the tilting base; the top of the rotating platform is provided with a reversible special three-jaw punch former via a rotating axis, and the measured part is fixed on the three-jaw chuck of the special three-jaw punch former. The present invention can ensure that the various parts of the planetary roller screw pair can accurately and quickly complete operations such as part clamping, position adjustment, and cross-section detection, and leave sufficient space for the profiler probe to avoid collision risks.

Description

Technical Field

[0001] The present invention relates to the field of detection platform fixtures, and in particular to a planetary roller screw pair profilometer detection platform installation fixture. Background Art

[0002] A planetary roller screw mechanism (PRSM) is a mechanical device that converts rotational motion into linear motion. Compared to ball screws, planetary roller screws offer advantages such as greater load capacity, high transmission precision, and a compact design. They are gaining increasing attention both domestically and internationally, and are commonly used in linear servo systems in military applications such as aerospace and weaponry, as well as in civilian applications such as CNC machine tools and medical equipment.

[0003] The planetary roller screw assembly developed by the company suffered from low transmission accuracy and efficiency, unreasonable structural design, and significant sticking after assembly. Analysis revealed that this was likely due to a variety of factors, including structural parameter mismatch and unreasonable manufacturing precision design. Therefore, efficient and accurate testing of the manufacturing precision of planetary roller screws during the testing phase is crucial for accelerating product production and promoting industrialization.

[0004] The contact-type profilometers currently used by companies meet the requirements for speed, accuracy, and overall measurement capability, providing accurate workpiece cross-sectional data for research. However, due to structural design issues with the profilometers, the use of conventional double-sided fixtures ensures proper alignment but carries the risk of collision between the profilometer probe and the fixture. Therefore, developing a new mounting fixture for planetary roller screw profilometer inspection platforms has become a pressing challenge for those skilled in the field. Summary of the Invention

[0005] The purpose of the present invention is to provide a planetary roller screw pair profiler detection platform installation fixture to ensure that the various parts of the planetary roller screw pair can accurately and quickly complete operations such as parts clamping, position adjustment and cross-section detection, and leave sufficient space for the profiler probe to avoid collision risks.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The present invention proposes a planetary roller screw pair profiler detection platform mounting fixture, comprising a mounting base, a rotating platform, a special three-jaw punch former and a tilting base; the lower surface of the mounting base is slidably matched with the guide rail through a guide rail slider, and the upper end face of the mounting base is provided with a tilting base, and the tilting base is matched with the arc-shaped slide groove on the tilting base fixing plate through the tilting base adjustment handles on both sides; the upper end face of the tilting base is provided with a rotating platform, and the lower surface of the rotating platform is rotationally matched with the upper surface of the tilting base; the top of the rotating platform is provided with a flip-able special three-jaw punch former through a rotating axis, and the measured part is fixed on the three-jaw chuck of the special three-jaw punch former.

[0008] Furthermore, when the special three-claw punch former is in a horizontal working state, the special three-claw punch former is connected to the threaded hole on the upper surface of the rotating platform through a screw.

[0009] Furthermore, when the special three-claw punch former is in a vertical working state, a fixing bolt that cooperates with the side of the special three-claw punch former is provided in the threaded hole above the rotating axis of the rotating platform.

[0010] Furthermore, a three-claw punch former rotating handle that cooperates with the special three-claw punch former is installed on the upper end of the rotating platform through a slide groove.

[0011] Furthermore, a three-claw punch former scale dial is provided on the working plane of the three-claw punch former rotating handle.

[0012] Furthermore, an additional nut fixture that cooperates with the nut component of the planetary roller screw pair can be installed on the special three-claw punch former through bolts.

[0013] Furthermore, a worm gear is provided at the lower end of the rotating platform, and a worm that cooperates with the worm gear is provided in the inclined base; a worm gear rotating handle that cooperates with the worm gear is provided on the rear end surface of the inclined base, and a bearing that cooperates with the worm gear is provided on the front end surface of the inclined base; a worm gear scale ring is provided on the worm gear rotating handle.

[0014] Furthermore, a rotating platform scale ring is provided on the circumferential surface of the rotating platform.

[0015] Furthermore, there are two guide rail sliders, which are fixed to both ends of the mounting base plate by guide rail slider fixing screws.

[0016] Furthermore, the tilt base fixing plate is mounted on the mounting base plate by tilt base fixing plate screws; and a dial is provided on the side of the tilt base.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects:

[0018] (1) The planetary roller screw pair profiler detection platform installation fixture of the present invention uses a special three-jaw punch former to fix the workpiece to be tested. The three-jaw fixation enables the workpiece to maintain good centering, avoids tilting, ensures the accuracy of profile detection, and can meet the clamping requirements of the screw, roller and nut. For nuts with larger circumferences, clamping is achieved by adding an additional nut fixture. The additional nut fixture is connected to the three-jaw chuck by threads, which is convenient for disassembly and assembly;

[0019] (2) The planetary roller screw pair profiler detection platform installation fixture of the present invention is fixed with a special three-claw punch former and a rotating platform through a rotating shaft and a thread, such as Figure 1 and Figure 2 As shown in the figure, the specially designed three-jaw punch former can be switched between two different working states to adapt to different profilometer probes. In addition, when the helix angle of the threaded part is known, the angle of the rotating platform can be fine-tuned to detect the normal cross-section of the test part and obtain more test part data.

[0020] (3) The planetary roller screw pair profiler detection platform installation fixture of the present invention adopts a worm gear mechanism to fine-tune the angle of the rotating platform. The large transmission ratio of the worm gear can meet the requirements of extremely small rotation angle adjustment;

[0021] (4) The planetary roller screw pair profiler detection platform installation fixture of the present invention uses a tilting platform to fine-tune the angle of the upper half of the entire mechanism, which can meet the taper detection requirements of the screw and other parts;

[0022] (5) The planetary roller screw pair profiler detection platform installation fixture of the present invention extends the handle mechanism of the special three-jaw punch former and lengthens the through hole length of the three-jaw chuck, thereby improving the operation convenience of the mechanism when detecting long-stroke long screws;

[0023] (6) The planetary roller screw pair profiler detection platform installation fixture of the present invention uses two guide rail sliders connected to the guide rail, such as Figure 3 As shown in the figure, under the condition that only one guide rail can be installed on the profilometer platform, the parallelism of the entire mounting fixture moving on the profilometer platform is ensured, and the position of the mounting fixture is adjusted according to the conditions such as the length of the measured object and the length of the probe to facilitate the completion of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 The planetary roller screw pair profiler detection platform installation fixture of the present invention (state 1);

[0026] Figure 2 The planetary roller screw pair profiler detection platform installation fixture of the present invention (state 2);

[0027] Figure 3 This is a bottom view of the fixture for installing the detection platform of the planetary roller screw pair profilometer of the present invention;

[0028] Figure 4 Schematic diagram of the internal structure of the rotating platform;

[0029] Figure 5 This is a schematic diagram of the additional nut fixture;

[0030] Figure 6 Schematic diagram of the cross section of the rotating platform (state 1);

[0031] Figure 7 Schematic diagram of the cross section of the rotating platform (state 2).

[0032] Explanation of the accompanying symbols: 1. Special three-claw punch former; 2. Rotating platform; 3. Rotating axis; 4. Tilt base; 5. Bearing; 6. Guide rail slider fixing screw; 7. Guide rail slider; 8. Guide rail; 9. Tilt base fixing plate screw; 10. Tilt base fixing plate; 11. Tilt base adjustment handle; 12. Worm; 13. Worm gear; 14. Worm gear rotating handle; 15. Worm gear scale ring; 16. Rotating platform scale ring; 17. Three-claw punch former rotating handle; 18. Three-claw punch former scale dial; 19. Mounting base. DETAILED DESCRIPTION

[0033] like Figures 1 to 7 As shown, a planetary roller screw pair profiler detection platform installation fixture includes a mounting base 19, a rotating platform 2, a special three-claw punch former 1 and a tilting base 4.

[0034] The lower surface of the mounting base 19 is slidably engaged with the guide rail 8 via a guide rail slider 7 . There are two guide rail sliders 7 , which are fixed to both ends of the mounting base 19 by guide rail slider fixing screws 6 .

[0035] The top surface of the mounting base 19 is provided with a tilting base 4, which engages with arcuate grooves on the tilting base fixing plate 10 via tilting base adjustment handles 11 on either side. The tilting base fixing plate 10 is mounted to the mounting base 19 via tilting base fixing plate screws 9. A graduated dial is provided on the side of the tilting base 4.

[0036] The upper end surface of the tilting base 4 is provided with a rotating platform 2, and a rotating platform scale ring 16 is provided on the circumference of the rotating platform 2. The lower surface of the rotating platform 2 is rotatably engaged with the upper surface of the tilting base 4. A worm gear 13 is provided at the lower end of the rotating platform 2, and a worm 12 is provided within the tilting base 4 to engage with the worm gear 13. A worm gear rotating handle 14 is provided on the rear end surface of the tilting base 4 to engage with the worm 12, and a bearing 5 is provided on the front end surface of the tilting base 4 to engage with the worm 12. A worm gear scale ring 15 is provided on the worm gear rotating handle 14.

[0037] A reversible special three-jaw punch former 1 is provided on the top of the rotating platform 2 via a rotating shaft 3 , and the part to be tested is fixed on the three-jaw chuck of the special three-jaw punch former 1 .

[0038] like Figure 1 As shown, when the special three-claw punch former 1 is in a horizontal working state, the special three-claw punch former 1 is connected to the threaded hole on the upper surface of the rotating platform 2 through a screw.

[0039] like Figure 2 As shown, when the special three-claw punch former 1 is in a vertical working state, a fixing bolt that cooperates with the side of the special three-claw punch former 1 is set in the threaded hole above the rotating shaft 3 of the rotating platform 2.

[0040] A three-claw punch former rotating handle 17 that cooperates with the special three-claw punch former 1 is installed on the upper end of the rotating platform 2 through a slide groove.

[0041] A three-claw punch former scale plate 18 is provided on the working plane of the three-claw punch former rotating handle 17 .

[0042] like Figure 5 As shown, the nut component of a planetary roller screw pair has a large circumference, and a three-jaw chuck is generally unable to clamp the nut. When measuring the internal thread of the nut, the specially designed three-jaw punch former 1 can be bolted onto an additional nut fixture that mates with the nut component of the planetary roller screw pair. The additional nut fixture can be removed when not needed to avoid interference during inspection.

[0043] The use process of the present invention is as follows:

[0044] Example 1

[0045] Adjust the three-jaw chuck to the position as shown below by rotating the axis 3. Figure 1 Install the screws to fix it in the position shown. The structure is as follows Figure 6As shown, the part to be tested is fixed on the three-jaw chuck of the special three-jaw punch former 1, and the three-jaw chuck is locked. At this time, the central axis of the part to be tested is the same as the central axis of the three-jaw chuck and the rotating platform 2, so there is no need to adjust the angle of the rotating platform 2.

[0046] The nut of the planetary roller screw pair has a large circumference, and the three-jaw chuck is usually unable to clamp the nut. When it is necessary to measure the internal thread of the nut, an additional nut clamp is installed on the three-jaw chuck of the special three-jaw punch former 1, such as Figure 5 As shown, the additional nut fixture can be used to clamp nuts with larger circumferences. When not needed, the additional nut fixture can be removed to avoid interference during inspection.

[0047] Use the guide rail 8 to move the entire mounting fixture to a position convenient for testing. After ensuring that the profilometer probe stroke can cover the workpiece, start the profilometer to begin the testing operation.

[0048] Example 2

[0049] Adjust the three-jaw chuck to the position as shown below by rotating the axis 3. Figure 2 As shown, screws are installed on both sides above the rotating shaft 3 to fix the part to be measured, and the three-jaw punch former rotating handle 17 is installed to fix the part to be measured on the three-jaw chuck of the special three-jaw punch former 1, and the three-jaw chuck is locked so that the axis of the part to be measured is parallel to the guide rail 8. The center of the punch former is a through hole, which is convenient for clamping longer parts to be measured. The angle of the part to be measured is adjusted by using the three-jaw punch former rotating handle 17 behind the special three-jaw punch former 1. After determining the cross-section to be measured, the rotation stroke positioning pin is installed to fix the part to be measured to the current angle. The current angle can be confirmed by the three-jaw punch former dial 18.

[0050] like Figure 4 As shown, the worm 12 is controlled by the worm gear rotating handle 14, and the worm gear 13 drives the rotating platform 2 to adjust the angle. The current angle is read by the rotating platform scale ring 16. When the cross-section detection requirement cannot be met, the angle is adjusted to a position where the test piece is parallel to the guide rail 8. For ease of operation, this angle should be designed to be 0°; for extremely small angle adjustments, according to the transmission ratio of the worm gear 13 and the worm 12, and with reference to the angle of the worm gear scale ring 15, the worm gear rotating handle 14 can be used to achieve precise control of the rotation angle.

[0051] The nut of the planetary roller screw pair has a large circumference, and the three-jaw chuck is usually unable to clamp the nut. When it is necessary to measure the internal thread of the nut, an additional nut clamp is installed on the three-jaw chuck of the special three-jaw punch former 1, such as Figure 5 As shown, the additional nut fixture can be used to clamp nuts with larger circumferences. When not needed, the additional nut fixture can be removed to avoid interference during inspection.

[0052] By adjusting the tilt base adjustment handle 11, the upper part of the clamp mechanism can be tilted. When processing a long screw with a large stroke, the angle of the tilt platform can be adjusted to detect the taper error of the screw processing. In addition, the clamp can also be used to detect other workpieces with similar requirements.

[0053] Use the guide rail 8 to move the entire mounting fixture to a position convenient for testing. After ensuring that the profilometer probe stroke can cover the workpiece, start the profilometer to begin the testing operation.

[0054] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A planetary roller screw pair profiler detection platform installation fixture, characterized by: The utility model comprises a mounting base (19), a rotating platform (2), a special three-claw punch former (1) and a tilting base (4); the lower surface of the mounting base (19) is slidably matched with the guide rail (8) through a guide rail slider (7); the upper end surface of the mounting base (19) is provided with a tilting base (4); the tilting base (4) is matched with the arc-shaped slide groove on the tilting base fixing plate (10) through the tilting base adjustment handles (11) on both sides; the upper end surface of the tilting base (4) is provided with a rotating platform (2); the lower surface of the rotating platform (2) is rotatably matched with the upper surface of the tilting base (4); the top end of the rotating platform (2) is provided with a flippable special three-claw punch former (1) through a rotating shaft (3), and the measured part is fixed on On the three-jaw chuck of the special three-jaw punch former (1); when the special three-jaw punch former (1) is in a horizontal working state, the special three-jaw punch former (1) is connected to the threaded hole on the upper surface of the rotating platform (2) through a screw; when the special three-jaw punch former (1) is in a vertical working state, a fixing bolt that matches the side of the special three-jaw punch former (1) is set in the threaded hole above the rotating axis (3) of the rotating platform (2), and the upper end of the rotating platform (2) is installed with a three-jaw punch former rotating handle (17) that matches the special three-jaw punch former (1) through a slide groove; an additional nut clamp that matches the nut component of the planetary roller screw pair can be installed on the special three-jaw punch former (1) through a bolt.

2. The planetary roller screw pair profiler detection platform mounting fixture according to claim 1, characterized in that: A three-claw punch former scale plate (18) is provided on the working plane of the three-claw punch former rotating handle (17).

3. The planetary roller screw pair profiler detection platform installation fixture according to claim 1, characterized in that: A worm wheel (13) is provided at the lower end of the rotating platform (2); a worm (12) cooperating with the worm wheel (13) is provided in the tilting base (4); a worm wheel rotating handle (14) cooperating with the worm (12) is provided on the rear end surface of the tilting base (4); a bearing (5) cooperating with the worm (12) is provided on the front end surface of the tilting base (4); and a worm wheel scale ring (15) is provided on the worm wheel rotating handle (14).

4. The planetary roller screw pair profiler detection platform mounting fixture according to claim 1, characterized in that: A rotating platform scale ring (16) is provided on the circumferential surface of the rotating platform (2).

5. The planetary roller screw pair profiler detection platform installation fixture according to claim 1, characterized in that: There are two guide rail sliders (7), which are fixedly mounted on both ends of the mounting base plate (19) via guide rail slider fixing screws (6).

6. The planetary roller screw pair profiler detection platform mounting fixture according to claim 1, characterized in that: The tilting base fixing plate (10) is mounted on the mounting base plate (19) via tilting base fixing plate screws (9); and a scale plate is provided on the side of the tilting base (4).

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