Impact fatigue testing device for a rolling linear guide pair reverser

Abstract

This invention discloses an impact fatigue testing device for a reversing mechanism of a rolling linear guide pair, relating to the technical field of rolling linear guide pairs. The invention includes a platform, a support table, two sets of raceways, a limiting seat, the reversing mechanism under test, and a ball-locking mechanism. The support table includes a set of side plates, each fixed to one side of the top of the platform. The front edge of one set of side plates has an inverted U-shaped rim. A back plate is fixed to the rear side between the side plates. Sliding edges are provided on the inner top of the back plate and the inner top of the rim. A strip-shaped mounting groove is provided on one side of the top of the platform. The limiting seat is fixed to the platform by wing bolts and the mounting groove. This invention, through the design of a novel testing device, is specifically designed for testing the impact fatigue performance of the reversing mechanism of a linear guide pair independently. The test is completely independent of the slider body, guide rail, or other accessories, and does not depend on these parts. It can perform complete simulation, thus enabling rapid and effective impact fatigue testing with good results and high efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of rolling linear guide pairs, and in particular relates to an impact fatigue testing device for a rolling linear guide pair reversing device. Background Technology

[0002] The reverser is a fundamental functional component of a rolling linear guide pair. The rolling linear guide pair mainly consists of a guide rail, a slider, balls, and a reverser. During the high-speed operation of the rolling linear guide pair, the reverser needs to hold and reverse the balls to ensure the stability and smoothness of the movement. The reverser raceway is subjected to strong impacts from the balls and is the most easily damaged part.

[0003] Therefore, it is very meaningful to design a test bench for testing the impact fatigue performance of the raceway of a reverser.

[0004] Patent CN111521392A discloses a device for detecting the frictional torque of a ball screw and a rolling linear guide reverser, which can simultaneously detect the frictional torque of the ball screw and the rolling guide reverser. Patent CN104101491A discloses a device for detecting the performance of a rolling linear guide pair, used to detect the rolling linear guide to obtain multiple performance characteristics including motion accuracy, noise, vibration, and friction. However, both of these solutions test the slider body and the reverser as a whole, making it impossible to test the reverser itself separately. The measurement of the reverser is not targeted, and the assembly and disassembly time of the guide pair is long, resulting in low testing efficiency. Both require a motor to drive the slider, which is costly and not convenient for batch and rapid testing. Summary of the Invention

[0005] The purpose of this invention is to provide an impact fatigue testing device for the reverser of a rolling linear guide pair. By designing a novel testing device, it is specifically designed to test the impact fatigue performance of the reverser of the guide pair independently. The test is completely independent of the slider body, guide rail or other accessories, and does not depend on these parts. It can perform complete simulation, thereby enabling rapid and effective impact fatigue testing with good results and high efficiency.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0007] This invention relates to an impact fatigue testing device for a rolling linear guide pair reverser, comprising a platform, a support table, two sets of raceways, a limit seat, a reverser under test, and a ball-locking mechanism.

[0008] The support platform includes a set of side plates, which are respectively fixed on both sides of the top of the platform. The front edge of the set of side plates is provided with an inverted U-shaped edging. A back plate is fixed between the set of side plates. The inner top of the back plate and the inner top of the edging are both provided with sliding edges.

[0009] The platform has a strip-shaped mounting groove on one side of its top, and the limiting seat is fixed to the platform by a wing bolt and the mounting groove;

[0010] The bottom of each side plate is provided with an outward protrusion. The two sides of the reverser under test are respectively spaced inside the two outward protrusions. The back side and front side of the reverser under test are respectively attached to the back plate and the limiting seat.

[0011] The two sets of raceways are respectively fixed on the inner side of the two side plates and are opposite to the ball bearing opening of the reverser under test. The top of the platform is provided with several openings, some of which are opposite to the position of the reverser under test.

[0012] The bead-catching mechanism includes a bead-dropping plate, which is slidably disposed between two sliding edges. An opening is provided on one side of the bead-dropping plate, and a miniature motor is fixed on the inner side of the top of the surrounding edge, which is opposite to the opening.

[0013] A reciprocating transmission mechanism is provided between the output end of the micro motor and the drop plate;

[0014] The drop plate has four openings, one end of which is a semi-circular port and the other end of which is an arc-shaped port;

[0015] The top of the raceway has a through-hole and a funnel is fixed thereon. A cut is provided on one side of the raceway to cooperate with the drop plate. The cut faces the arc-shaped port.

[0016] Furthermore, the raceway is a transparent tube, and a set of proximity switches is fixed on the side plate, with the detection surfaces of the two proximity switches facing the two raceways inside the side plate respectively.

[0017] Furthermore, the platform is equipped with a drawer that communicates with the opening, and the front cover of the drawer faces the front of the platform.

[0018] Furthermore, the bottom surface of the drawer is provided with a rubber pad, the bottom surface of the drawer is sloped, and the front cover of the drawer is provided with a handle.

[0019] Furthermore, the wing bolt includes a screw and a nut, the nut being a wing nut, the screw being a T-screw, the mounting groove having an inverted T-shaped cross-section, the screw head sliding along the larger opening of the mounting groove, and the screw shank sliding along the smaller opening of the mounting groove.

[0020] Furthermore, the back plate is provided with a through opening, the top of the back plate is provided with a positioning edge, and the sliding edge of the top of the back plate is located inside the positioning edge.

[0021] Furthermore, the reciprocating transmission mechanism includes a turntable and a connecting rod. One end of the connecting rod has an annular opening, the turntable is rotatably disposed within the annular opening, the output end of the micro motor is rotatably connected to the rear edge of the turntable, and the other end of the connecting rod is rotatably connected to the inside of the opening.

[0022] Furthermore, several rollers are fixed at both edges of the drop plate, and the rollers roll along the sliding edge.

[0023] Furthermore, an installation edge is provided on the inner side of the top of the edging, the installation edge does not interfere with the through-hole position, the installation edge is opposite to the opening position, and the micro motor is fixed on the top of the installation edge.

[0024] Furthermore, the funnel is a half-funnel body, and the two half-funnel bodies on the same side of the side plate are distributed parallel to each other on opposite sides.

[0025] The present invention has the following beneficial effects:

[0026] 1. This invention designs a novel testing device specifically for testing the impact fatigue performance of the guide rail pair reverser. The test is completely independent of the slider body, guide rail, or other accessories, and does not depend on these parts. It can perform complete simulation, thus enabling rapid and effective impact fatigue testing with good results and high efficiency.

[0027] 2. This invention controls the movement of the ball bearings by gravity, eliminating the need to drive the ball bearings. It has a simple structure, low cost, and low energy consumption.

[0028] 3. The present invention facilitates the installation, removal and replacement of the reverser by limiting the position of the reverser under test. No adapter or clamp needs to be replaced during clamping. The clamping process is simple and fast, which is convenient for operators. At the same time, different specifications of devices can be designed for use with different models of reversers, so the application range is wide.

[0029] 4. This invention controls the balls to pour into one or more funnels, allowing for the individual testing of a portion of the reverser, rather than testing all of them together. This facilitates the individual evaluation of a specific raceway of the reverser and provides a wider testing range.

[0030] 5. This invention can adjust the frequency of ball drop by controlling the rotation speed of the micro motor, and can also make the balls fall one by one according to the acceleration due to gravity. Furthermore, the number of balls dropped can be detected by a proximity switch, which is beneficial for detection.

[0031] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure from the front view of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of the present invention from a rear view after removing the two funnels;

[0035] Figure 3 This is a magnified view of the location of the limit seat;

[0036] Figure 4 A schematic diagram of the structure after removing the two side panels and the surrounding edge of the support platform;

[0037] Figure 5 A schematic diagram of the bead-locking mechanism and the micro motor;

[0038] The attached diagram lists the components represented by each number as follows:

[0039] 1-Platform, 2-Support platform, 3-Roller, 4-Limit seat, 5-Measured reverser, 6-Ball clamping mechanism, 7-Micro motor, 101-Mounting slot, 102-Wing bolt, 103-Through opening, 104-Drawer, 201-Side plate, 202-Side rim, 203-Back plate, 204-Sliding edge, 205-Outward protrusion, 206-Through opening, 207-Positioning edge, 208-Proximity switch, 301-Function funnel, 302-Slit, 601-Ball drop plate, 602-Opening, 603-Through opening, 604-Roller, 701-Turntable, 702-Connecting rod, 703-Annular opening. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figure 1-5 As shown, the present invention is an impact fatigue testing device for a rolling linear guide pair reverser, comprising a platform 1, a support table 2, two sets of raceways 3, a limit seat 4, a reverser under test 5, and a ball retaining mechanism 6.

[0042] The support platform 2 includes a set of side plates 201, which are fixed on the top two sides of the platform 1 respectively. The front edge of the set of side plates 201 is provided with an inverted U-shaped rim 202. A back plate 203 is fixed on the rear side between the set of side plates 201. Sliding edges 204 are provided on the top inner side of the back plate 203 and the top inner side of the rim 202.

[0043] A strip-shaped mounting groove 101 is provided on one side of the top of the platform 1, and the limiting seat 4 is fixed to the platform 1 by the wing bolt 102 and the mounting groove 101;

[0044] The bottom of the side plate 201 is provided with an outward protrusion 205. The two sides of the reverser 5 under test are respectively spaced inside the two outward protrusions 205. The back side and front side of the reverser 5 under test are respectively attached to the back plate 203 and the limiting seat 4.

[0045] Two sets of raceways 3 are fixed on the inner side of the two side plates 201 and are opposite to the ball bearing opening of the reverser 5 under test. The top of the platform 1 is provided with several openings 103, some of which are opposite to the reverser 5 under test.

[0046] The bead-catching mechanism 6 includes a bead-dropping plate 601, which is slidably disposed between two sliding edges 204. An opening 602 is provided on one side of the bead-dropping plate 601, and a micro motor 7 is fixed on the inner side of the top of the edge 202, which is opposite to the position of the opening 602.

[0047] A reciprocating transmission mechanism is provided between the output end of the micro motor 7 and the drop plate 601;

[0048] The drop plate 601 has four openings 603, one end of which is a semi-circular port and the other end of which is an arc port.

[0049] The top of the raceway 3 has a through-hole 103 and a funnel 301 is fixed thereon. A cutout 302 that cooperates with the drop plate 601 is opened on one side of the raceway 3, and the cutout 302 faces the arc-shaped port.

[0050] Among them, such as Figure 1-2 and Figure 4 As shown, the raceway 3 is a transparent tube. A set of proximity switches 208 is fixed on the side plate 201. The detection surfaces of the two proximity switches 208 face the two raceways 3 inside the side plate 201 respectively. The transparent raceway 3 makes it easy to observe the state of the ball. The proximity switches 208 can count the falling balls. The signal is transmitted from the proximity switches 208 to the USB data acquisition device, which can process and analyze the data. The ball is made of metal and the sensing distance is 3mm. Therefore, the proximity switches 208 can sense the falling ball even through the wall thickness of the raceway 3.

[0051] Among them, such as Figure 1-2 As shown, the platform 1 is equipped with a drawer 104 that communicates with the opening 103, and the front cover of the drawer 104 faces the front of the platform 1.

[0052] The drawer 104 has a rubber pad on the inner bottom surface, a slope on the inner bottom surface, and a handle on the front cover.

[0053] The wing bolt 102 includes a screw and a nut. The nut is a wing nut, the screw is a T-screw, and the mounting groove 101 has an inverted T-shaped cross-section. The screw head slides along the larger opening of the mounting groove 101, and the screw shank slides along the smaller opening of the mounting groove 101.

[0054] Among them, such as Figure 1-2 and Figure 5 As shown, the back plate 203 has a through opening 206, the top of the back plate 203 has a positioning edge 207, and the sliding edge 204 at the top of the back plate 203 is located inside the positioning edge 207.

[0055] Among them, such as Figure 5 As shown, the reciprocating transmission mechanism includes a turntable 701 and a connecting rod 702. One end of the connecting rod 702 has an annular opening 703. The turntable 701 is rotatably disposed in the annular opening 703. The output end of the micro motor 7 is rotatably connected to the rear edge of the turntable 701. The other end of the connecting rod 702 is rotatably connected to the inside of the opening 602.

[0056] Among them, such as Figure 4-5 As shown, several rollers 604 are fixed at both sides of the drop plate 601. The rollers 604 roll along the sliding edge 204. The design of the rollers 604 can reduce the friction when the drop plate 601 moves back and forth, improve the smoothness of the drop plate 601's movement, and reduce the life reduction caused by wear.

[0057] The inner top of the edging 202 is provided with an installation edge. The installation edge and the through 603 are not interfering with each other. The installation edge and the opening 602 are opposite to each other. The micro motor 7 is fixed on the top of the installation edge.

[0058] Among them, such as Figure 1-2 and Figure 4-5 As shown, the funnel 301 is a half-funnel body, and the two halves of the funnel body on the same side of the side plate 201 are parallel to each other. The funnel 301 serves as the inlet for the balls to enter the running-in raceway 3 and is placed above the running-in raceway 3. The number of balls entering the raceway 3 can be controlled by the amount poured into the funnel 301. The reciprocating motion of the ball drop plate 601 can also be controlled by the micro motor 7, thereby controlling the steel balls to fall one by one.

[0059] The working principle of this invention is as follows: A certain number of balls are placed into the funnel 301. The cooperation of the micro motor 7 and the reciprocating transmission mechanism can drive the ball drop plate 601 to reciprocate. When the arc-shaped port on the ball drop plate 601 moves into the raceway 3 through the cut 302, the arc-shaped port can block the balls between the funnel 301 and the raceway 3. The reciprocating motion of the ball drop plate 601 can control the balls to fall in sequence. The balls fall directly into the raceway 3 of the reverser 5 under test through the raceway 3 to simulate the impact. The drawer 104 collects the fallen balls. After collection, the balls can be removed for the next test to achieve recycling.

[0060] When it is necessary to replace the reverser 5 under test, rotate the wing nut to make the limit seat 4 and the platform 1 in an active state. At this time, the limit seat 4 can be moved away from the reverser 5 under test, so that the reverser 5 under test can be removed, a new reverser 5 under test can be replaced, and the limit seat 4 can be reset and tightened for limiting.

[0061] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An impact fatigue testing device for a rolling linear guide pair reverser, characterized in that: It includes a platform (1), a support platform (2), two sets of raceways (3), a limit seat (4), a reverser under test (5), and a ball clamping mechanism (6); The support platform (2) includes a set of side plates (201), which are fixed on the top two sides of the platform (1). The front edge of the set of side plates (201) is provided with an inverted U-shaped rim (202). A back plate (203) is fixed on the rear side between the set of side plates (201). The inner top of the back plate (203) and the inner top of the rim (202) are both provided with sliding edges (204). The platform (1) has a strip-shaped mounting groove (101) on one side of its top, and the limiting seat (4) is fixed to the platform (1) by a wing bolt (102) and the mounting groove (101); The bottom of each side plate (201) is provided with an outward protrusion (205), and the two sides of the reverse device under test (5) are respectively spaced inside the two outward protrusions (205). The back and front sides of the reverse device under test (5) are respectively attached to the back plate (203) and the limiting seat (4). The two sets of raceways (3) are fixed on the inner side of the two side plates (201) and are opposite to the ball bearing opening of the reverser (5) under test. The top of the platform (1) is provided with several openings (103), and some of the openings (103) are opposite to the reverser (5) under test. The bead-catching mechanism (6) includes a bead-dropping plate (601), which is slidably disposed between two sliding edges (204). An opening (602) is provided on one side of the bead-dropping plate (601), and a micro motor (7) is fixed on the inner side of the top of the edge (202) opposite to the position of the opening (602). A reciprocating transmission mechanism is provided between the output end of the micro motor (7) and the drop plate (601); The drop plate (601) has four openings (603), one end of the opening (603) is a semi-circular port, and the other end of the opening (603) is an arc-shaped port; The top of the raceway (3) has a through-hole (103) and a funnel (301) is fixed thereon. A cut (302) that cooperates with the drop plate (601) is provided on one side of the raceway (3). The cut (302) faces the arc-shaped port.

2. The impact fatigue testing device for a rolling linear guide pair reverser according to claim 1, characterized in that, The raceway (3) is a transparent tube, and a set of proximity switches (208) is fixed on the side plate (201). The detection surfaces of the two proximity switches (208) face the two raceways (3) inside the side plate (201) respectively.

3. The impact fatigue testing device for a rolling linear guide pair reverser according to claim 1, characterized in that, The platform (1) is provided with a drawer (104) that communicates with the opening (103), and the front cover of the drawer (104) faces the front side of the platform (1).

4. The impact fatigue testing device for the reversing mechanism of a rolling linear guide pair according to claim 3, characterized in that, The bottom surface of the drawer (104) is provided with a rubber pad, the bottom surface of the drawer (104) is provided with a slope, and the front cover of the drawer (104) is provided with a handle.

5. The impact fatigue testing device for a rolling linear guide pair reverser according to claim 1, characterized in that, The wing bolt (102) includes a screw and a nut. The nut is a wing nut, and the screw is a T-screw. The mounting groove (101) has an inverted T-shaped cross-section. The screw head slides along the larger opening of the mounting groove (101), and the screw shaft slides along the smaller opening of the mounting groove (101).

6. The impact fatigue testing device for the reversing mechanism of a rolling linear guide pair according to claim 1, characterized in that, The back plate (203) is provided with a through opening (206), the top of the back plate (203) is provided with a positioning edge (207), and the sliding edge (204) at the top of the back plate (203) is provided inside the positioning edge (207).

7. The impact fatigue testing device for a rolling linear guide pair reverser according to claim 1, characterized in that, The reciprocating transmission mechanism includes a turntable (701) and a connecting rod (702). One end of the connecting rod (702) has an annular opening (703). The turntable (701) is rotatably disposed within the annular opening (703). The output end of the micro motor (7) is rotatably connected to the rear edge of the turntable (701). The other end of the connecting rod (702) is rotatably connected to the inside of the opening (602).

8. The impact fatigue testing device for the reversing mechanism of a rolling linear guide pair according to claim 1, characterized in that, Several rollers (604) are fixed at both sides of the drop plate (601), and the rollers (604) roll along the sliding edge (204).

9. The impact fatigue testing device for a rolling linear guide pair reverser according to claim 1, characterized in that, The inner top of the edging (202) is provided with an installation edge, the installation edge and the through hole (603) are not interfering with each other, the installation edge and the opening (602) are opposite to each other, and the micro motor (7) is fixed on the top of the installation edge.

10. The impact fatigue testing device for the reversing mechanism of a rolling linear guide pair according to claim 1, characterized in that, The funnel (301) is a half-funnel body, and the two half-funnel bodies on the same side of the side plate (201) are distributed parallel to each other on opposite sides.

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