Self-adaptive balance transmission mechanism of linear guide rail service life testing machine

Abstract

The utility model discloses a self-adaptive balance transmission mechanism of a linear guide rail service life testing machine. The self-adaptive balance transmission mechanism comprises a connecting seat, a T-shaped block, a cross-shaped connecting plate and an adjusting screw rod, the connecting base is provided with a through groove in sliding fit with the head of the T-shaped block, and the groove bottom of the through groove is provided with a strip-shaped hole extending out of the tail of the T-shaped block. A first hinge part is arranged at the tail of the T-shaped block, a second hinge part is arranged at one end of the cross-shaped connecting plate, and the first hinge part is hinged to the second hinge part through a first pin shaft; a third hinging part is arranged at the other end of the cross-shaped connecting plate and is hinged to the workpiece through a second pin shaft; the central axis of the first pin shaft is perpendicular to the central axis of the second pin shaft. The head of the T-shaped block is provided with a first threaded hole in threaded connection with the adjusting screw, the first threaded hole penetrates through the head of the T-shaped block in the length direction of the through groove, and the two ends of the adjusting screw are rotationally connected with the two ends of the connecting base respectively. According to the utility model, errors from a plurality of directions of the workpiece can be self-adaptively balanced.

Description

Technical Field

[0001] This utility model relates to the technical field of linear guide pair performance testing equipment, and more specifically, to an adaptive balance transmission mechanism for a linear guide life testing machine. Background Technology

[0002] Currently, life testing of linear guides aims to evaluate their durability and lifespan during long-term use. This testing typically simulates the use of the guide under actual working conditions to verify its performance under prolonged and frequent operation. In some linear guide life testing equipment, the drive mechanism is rigidly connected to the linear guide under test via a transmission mechanism, driving the guide to reciprocate relative to its mating slider. However, linear guides exhibit free bending, and the guide under test may have inherent free bending errors during manufacturing. Since the transmission mechanism is rigidly connected to the guide, the reciprocating motion of the linear guide during the test will generate uneven lateral bending moments and increase vibrations during the reciprocating motion, thus affecting the test results and the service life of the transmission mechanism. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an adaptive balancing transmission mechanism for a linear guide rail life testing machine, which can both adjust the workpiece up and down and adaptively balance the influence of errors from multiple directions of the workpiece on the test.

[0004] To achieve the above objectives, this utility model provides an adaptive balancing transmission mechanism for a linear guide rail life testing machine, comprising a connecting seat, a T-block, a cross connecting plate, and an adjusting screw. The connecting seat has a through groove that slides with the head of the T-block, and the bottom of the through groove has a strip-shaped hole extending from the tail of the T-block, the strip-shaped hole extending along the length of the through groove. The tail of the T-block has a first hinge portion, and one end of the cross connecting plate has a second hinge portion, the first hinge portion being hinged to the second hinge portion via a first pin. The other end of the cross connecting plate has a third hinge portion, the third hinge portion being hinged to the workpiece via a second pin. The central axis of the first pin is perpendicular to the through groove; the central axis of the second pin is parallel to the through groove. The head of the T-block has a first threaded hole that penetrates the head of the T-block along the length of the through groove. The adjusting screw is threadedly connected to the first threaded hole, and both ends of the adjusting screw are rotatably connected to both ends of the connecting seat.

[0005] As a preferred embodiment of this utility model, a first fixing plate is installed at one end of the connecting seat, and a second fixing plate is installed at the other end of the connecting seat. Both the first fixing plate and the second fixing plate are provided with through holes through which the adjusting screw can pass. One end of the adjusting screw is provided with an internal hexagonal cylindrical head, the outer diameter of which is larger than the diameter of the through hole, and the internal hexagonal cylindrical head abuts against the outer surface of the first fixing plate. The other end of the adjusting screw is provided with a second threaded hole, which is arranged along the axis of the adjusting screw. A locking screw is threaded into the second threaded hole. An elastic washer, a flat washer, and an anti-wear washer are provided sequentially from the inside to the outside between the outer surface of the second fixing plate and the locking screw.

[0006] As a preferred embodiment of this utility model, the elastic washer is a saddle-shaped elastic washer.

[0007] As a preferred embodiment of this utility model, both the first fixing plate and the second fixing plate are fixed to the end of the connecting seat by bolts.

[0008] As a preferred embodiment of this utility model, a nylon washer is provided between the first hinge portion and the second hinge portion.

[0009] As a preferred embodiment of this utility model, the connector is provided with a plurality of mounting holes for connection to the device drive side.

[0010] As a preferred embodiment of the present invention, the end of the first pin is fitted with a first cotter pin for preventing the first pin from moving along its axial direction; the end of the second pin is fitted with a second cotter pin for preventing the second pin from moving along its axial direction.

[0011] The adaptive balancing transmission mechanism for a linear guide rail life testing machine provided by this utility model has the following advantages compared with the prior art:

[0012] This invention enables the T-block to move up and down by adjusting the screw, thereby adjusting the workpiece vertically. At the same time, since the T-block and the cross connecting plate are hinged, the vertical error is compensated. The cross connecting plate and the workpiece are also hinged, which compensates for the horizontal error. Thus, it can adaptively balance the influence of errors from multiple directions of the workpiece on the test. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the adaptive balance transmission mechanism of a linear guide rail life testing machine provided in this embodiment of the utility model.

[0014] Marked in the image:

[0015] 1. Connecting seat; 2. T-block; 3. Cross connecting plate; 4. Adjusting screw; 5. Through groove; 6. Strip hole; 7. First hinge part; 8. Second hinge part; 9. First pin; 10. Third hinge part; 11. Second pin; 12. Locking screw; 13. First threaded hole; 14. First fixing plate; 15. Second fixing plate; 16. Through hole; 17. Socket head; 18. Elastic washer; 19. Flat washer; 20. Anti-wear washer; 21. Bolt; 22. Mounting hole; 23. Nylon washer; 24. First cotter pin; 25. Second cotter pin; 26. Workpiece. Detailed Implementation

[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0017] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are used only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] like Figure 1 As shown, this is a preferred embodiment of the present invention.

[0019] An adaptive balancing transmission mechanism for a linear guide rail life testing machine includes a connecting seat 1, a T-block 2, a cross connecting plate 3, and an adjusting screw 4. The connecting seat 1 has a through groove 5 that slides with the head of the T-block 2. The bottom of the through groove 5 has a strip-shaped hole 6 extending from the tail of the T-block 2, and the strip-shaped hole 6 extends along the length of the through groove 5. The tail of the T-block 2 has a first hinge portion 7, and one end of the cross connecting plate 3 has a second hinge portion 8. The first hinge portion 7 is hinged to the second hinge portion 8 via a first pin 9. The other end of the cross-shaped connecting plate 3 is provided with a third hinge part 10, which is hinged to the workpiece 26 via a second pin 11. The central axis of the first pin 9 is perpendicular to the through groove 5; the central axis of the second pin 11 is parallel to the through groove 5. The head of the T-block 2 is provided with a first threaded hole 13, which passes through the head of the T-block 2 along the length of the through groove 5. The adjusting screw 4 is threadedly connected to the first threaded hole 13, and the two ends of the adjusting screw 4 are rotatably connected to the two ends of the connecting seat 1. Thus, by adjusting the screw 4, the T-block 2 can be moved up and down, thereby adjusting the workpiece 26 up and down. At the same time, since the T-block 2 and the cross-shaped connecting plate 3 are hinged, the error in the vertical direction is compensated. The cross-shaped connecting plate 3 and the workpiece 26 are also hinged, which compensates for the error in the horizontal direction. Therefore, it is possible to adaptively balance the influence of errors from multiple directions of the workpiece 26 on the test.

[0020] For example, a first fixing plate 14 is installed at one end of the connecting seat 1, and a second fixing plate 15 is installed at the other end of the connecting seat 1. Both the first fixing plate 14 and the second fixing plate 15 are provided with through holes 16 through which the adjusting screw 4 can pass. One end of the adjusting screw 4 is provided with an internal hexagonal cylindrical head 17, the outer diameter of which is larger than the diameter of the through hole 16, and the internal hexagonal cylindrical head 17 abuts against the outer surface of the first fixing plate 14. The other end of the adjusting screw 4 is provided with a second threaded hole, which is arranged along the axis of the adjusting screw 4. A locking screw 12 is threaded into the second threaded hole. An elastic washer 18, a flat washer 19, and an anti-wear washer 20 are provided sequentially from the inside to the outside between the outer surface of the second fixing plate 15 and the locking screw 12. In this embodiment, the elastic washer 18 is preferably a saddle-shaped elastic washer. This design allows the adjusting screw 4 to be axially fixed while retaining the requirement for the adjusting screw 4 to rotate, effectively ensuring the reliability of the up-and-down adjustment of the T-block 2.

[0021] For example, for ease of assembly, the first fixing piece 14 and the second fixing piece 15 are both fixed to the end of the connecting seat 1 by bolts 21; the connecting seat 1 is provided with a plurality of mounting holes 22 for connection to the device drive side.

[0022] For example, a nylon washer 23 is provided between the first hinge portion 7 and the second hinge portion 8. The nylon washer 23 has excellent corrosion resistance and heat insulation properties, and can protect the contact surfaces of the first hinge portion 7 and the second hinge portion 8 from wear.

[0023] For example, the end of the first pin 9 is fitted with a first cotter pin 24 for preventing the first pin 9 from moving along its axial direction; the end of the second pin 11 is fitted with a second cotter pin 25 for preventing the second pin 11 from moving along its axial direction.

[0024] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. An adaptive balancing transmission mechanism for a linear guide life tester, characterized in that The cam is an angular channel that is fixedly connected to the side panel of the second cam and the slotting mechanism is connected with the cam in the channel, and the cam is connected with the second cam at the end of the second cam.

2. The adaptive balance transmission mechanism of the linear guide rail life testing machine according to claim 1, characterized in that: A first fixing plate is installed at one end of the connecting seat, and a second fixing plate is installed at the other end of the connecting seat. The first fixing plate and the second fixing plate are both provided with a through hole for the adjusting screw to pass through. A hexagonal cylindrical head is provided at one end of the adjusting screw. The outer diameter of the hexagonal cylindrical head is larger than the aperture of the through hole, and the hexagonal cylindrical head abuts against the outer side surface of the first fixing plate; a second threaded hole is provided at the other end of the adjusting screw, and the second threaded hole is threadedly connected with a locking screw. An elastic washer, a flat washer and an anti-wear washer are provided in sequence from the inside to the outside between the outer side surface of the second fixing plate and the locking screw.

3. The adaptive balancing transmission mechanism of the linear guide rail life testing machine according to claim 2, characterized in that: The elastic washer is a saddle-shaped elastic washer.

4. The adaptive balance transmission mechanism of the linear guide rail life testing machine according to claim 2, characterized in that: The first fixing plate and the second fixing plate are both fixed to the end of the connecting seat by bolts.

5. The adaptive balancing transmission mechanism of the linear guide rail life testing machine according to claim 1, characterized in that: A nylon washer is provided between the first hinge part and the second hinge part.

6. The adaptive balance transmission mechanism of the linear guide rail life testing machine according to claim 1, characterized in that: The connection seat is provided with a plurality of mounting holes for connecting the driving side of the device.

7. The self-adaptive balancing transmission mechanism of the linear guide rail life testing machine according to claim 1, characterized in that: A first cotter pin for preventing the first pin from moving along its axial direction is inserted at the end of the first pin shaft; a second cotter pin for preventing the second pin from moving along its axial direction is inserted at the end of the second pin shaft.

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