A test fixture, a test machine and a test method for a guide rail pair

Abstract

The present invention discloses a test fixture, a test machine and a test method for a guide rail pair, wherein the test fixture comprises: a lower mounting assembly having a machine platform, the machine platform being used to fix a first guide rail; an upper mounting assembly being used to connect a first slider and a loading beam, having a loading member, an adjusting guide rail pair, a force sensor and a locking member, the loading member connecting the guide rail pair to be tested, the second guide rail of the adjusting guide rail pair connecting the loading beam of the testing machine, the second slider of the adjusting guide rail pair connecting the force sensor, the locking member being able to relatively lock or release the second guide rail and the second slider of the adjusting guide rail pair; a centering pin and a centering connecting sleeve being arranged between the force sensor and the loading member, the centering pin being able to be inserted into the centering connecting sleeve for positioning; a loading sleeve being detachably arranged between the force sensor and the loading member, the loading sleeve being able to be arranged concentrically with the centering pin or the centering connecting sleeve. The test fixture, the test machine and the test method for a guide rail pair of the present invention can reduce adjustments, saving time and effort.

Description

Technical Field

[0001] The invention relates to testing equipment, and in particular to a testing fixture and a testing method for a guide rail pair. Background Art

[0002] Static stiffness is an important indicator to characterize the bearing capacity of guide rail pairs.

[0003] For testing purposes, a material tensile testing machine is usually used, which is then modified to form a testing machine for guide rail pairs.

[0004] Structurally, the guide rail pair to be tested has a first guide rail and a first slider, and the test machine of the guide rail pair has a machine table and a lifting and lowering loading beam.

[0005] When using a testing machine for a guide rail pair, first, the guide rail pair to be tested is installed on the machine platform of the testing machine. The machine platform is preferably fixed to the first guide rail of the guide rail pair to be tested, and the loading beam is fixed to the first slider of the guide rail pair to be tested. Then, the loading beam is controlled to rise and fall, thereby applying the load required for the test to the guide rail pair to be tested.

[0006] However, the guide rail pair is randomly fixed on the machine platform and needs to be adjusted many times to meet the test needs, which is time-consuming and labor-intensive. Summary of the invention

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a test fixture for a guide rail pair, which can reduce adjustments, save time and labor.

[0008] The present invention also provides a testing machine having the above-mentioned testing tooling.

[0009] The present invention also provides a testing machine method using the testing machine.

[0010] According to the first aspect of the present invention, a test fixture for a guide rail pair comprises: a lower mounting assembly having a machine platform of a test machine, the machine platform being used to support and fix one of the first guide rail and the first slider of the guide rail pair to be tested; an upper mounting assembly, arranged above the machine platform, being used to connect the first guide rail and the other of the first slider of the guide rail pair to be tested, and being used to connect the loading beam of the test machine, comprising a loading member, an adjusting guide rail pair, a force sensor and a locking member, the loading member being connected to the guide rail pair to be tested, one of the second guide rail and the second slider of the adjusting guide rail pair being connected to the loading beam of the test machine, the other of the second guide rail and the second slider of the adjusting guide rail pair being connected to the force sensor, and the locking member being able to relatively lock or release the second guide rail and the second slider of the adjusting guide rail pair; wherein a centering pin and a centering connecting sleeve are arranged between the force sensor and the loading member, the centering pin being able to be inserted into the centering connecting sleeve for positioning; wherein a loading sleeve is detachably arranged between the force sensor and the loading member, and the loading sleeve being able to be arranged concentrically with the centering pin or the centering connecting sleeve.

[0011] According to a test fixture of a guide rail pair in an embodiment of the first aspect of the present invention, the centering pin is arranged at the bottom of the force sensor, and the centering connecting sleeve is installed on the loading member.

[0012] According to a test fixture of a guide rail pair in an embodiment of the first aspect of the present invention, the force sensor is provided with a first mounting portion, the first mounting portion is used to mount the centering pin, and the first mounting portion is also used to mount the loading sleeve.

[0013] According to a test fixture of a guide rail pair in an embodiment of the first aspect of the present invention, the loading component is provided with a second mounting portion for positioning the centering connecting sleeve, and the second mounting portion is also used for positioning the loading sleeve.

[0014] According to a test fixture of a guide rail pair in an embodiment of the first aspect of the present invention, the second mounting portion is columnar, and the second mounting portion can be respectively plugged and positioned with the centering connecting sleeve and the loading sleeve.

[0015] According to a test fixture of a guide rail pair in an embodiment of the first aspect of the present invention, the second mounting portion is provided with a loading pin, and the loading sleeve is provided with a socket for accommodating the loading pin.

[0016] According to a test fixture of a guide rail pair in an embodiment of the first aspect of the present invention, the second guide rail of the adjustment guide rail pair is connected to the loading beam.

[0017] According to a test fixture of a guide rail pair in an embodiment of the first aspect of the present invention, the adjustment guide rail pair is arranged at the bottom of the loading beam, and the extension direction of the adjustment guide rail pair is arranged parallel to the loading beam of the testing machine.

[0018] A test fixture for a guide rail pair according to an embodiment of the present invention has at least the following beneficial effects:

[0019] The present invention provides a centering pin, a centering connecting sleeve, an adjusting guide pair and a locking piece. Therefore, when the centering pin is inserted into the centering connecting sleeve, one or both of the guide pair to be tested and the adjusting guide pair move, so that the loading piece and the force sensor are centered. Then, the locking piece locks the adjusting guide pair, thereby quickly completing the position adjustment of the force sensor, so that the center line of the force sensor passes through the center of the guide pair to be tested, meeting the test requirements, replacing the previous adjustment method of repeatedly loosening and adjusting the guide pair to be tested, saving time and effort.

[0020] Next, the present invention sets a loading sleeve, thereby utilizing the loading sleeve to realize the force of the loading beam on the guide rail pair to be measured. On the one hand, the force transmission is stable and reliable. On the other hand, there is no need to transmit the bearing force of the centering pin and the centering connecting sleeve, thereby avoiding damage to the centering pin and the centering connecting sleeve.

[0021] Moreover, the center setting of the loading sleeve and the centering pin or the centering connecting sleeve also ensures that the bearing force, the center of the force sensor, and the center of the guide rail pair to be measured coincide with each other, ensuring that the force effect meets the requirements.

[0022] A guide rail pair testing machine according to an embodiment of the second aspect of the present invention includes a guide rail pair testing tool as described in any one of the above items.

[0023] A guide rail pair testing machine according to an embodiment of the present invention has at least the following beneficial effects:

[0024] By applying the above-mentioned test tooling, the present invention can conveniently complete the adjustment, reduce the number of adjustments, reduce the adjustment time, save time and labor, and greatly improve the test efficiency.

[0025] Furthermore, the present invention does not require additional improvements to the machine platform, so that the test machine can quickly switch between testing the guide rail pair and other tasks, and has strong versatility.

[0026] A method for testing a guide rail pair according to an embodiment of the third aspect of the present invention includes the above-mentioned guide rail pair testing machine.

[0027] Furthermore, the test method further comprises the following steps:

[0028] Preparation step, fixing one of the first guide rail and the first slider of the guide rail pair to be tested to the machine table of the testing machine, installing the loading member on the other of the first guide rail and the first slider of the guide rail pair to be tested, fixing one of the second guide rail and the second slider of the adjusting guide rail pair to the loading beam of the testing machine, installing a force sensor on the other of the second guide rail and the second slider of the adjusting guide rail pair, installing the centering pin on one of the loading member and the force sensor, and installing the centering connecting sleeve on the other of the loading member and the force sensor;

[0029] An adjustment step is to lower the loading beam of the testing machine so that the centering pin is inserted into the centering connecting sleeve, and then adjust the locking piece so that the second guide rail and the second slider of the adjustment guide rail pair are locked;

[0030] The test steps are as follows: raising the loading beam of the test machine, installing the loading sleeve, and then applying a load to the guide rail pair to be tested by the loading beam, and the test machine performs the test.

[0031] A guide rail pair testing method according to an embodiment of the present invention has at least the following beneficial effects:

[0032] Due to the use of the above-mentioned guide rail pair testing machine, the present invention also provides a guide rail pair testing method, which can achieve rapid and accurate coincidence of the center of the force sensor with the center of the guide rail pair to be tested through the cooperation of the centering pin and the centering connecting sleeve. On the one hand, it saves adjustment strength and adjustment time, and on the other hand, it ensures that the force-bearing surfaces of the guide rail pair to be tested are consistent during the test, thereby ensuring the accuracy of the calculated static stiffness value.

[0033] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0035] Figure 1 It is a structural schematic diagram of the adjustment state of a testing machine for a guide rail pair according to an embodiment of the present invention;

[0036] Figure 2 The present invention is a structural schematic diagram of a test state of a guide rail pair testing machine according to an embodiment of the present invention.

[0037] Figure numbers: 100-machine table, 110-guide rail pair to be tested, 120-first guide rail, 130-first slider, 140-loading beam, 150-loading member, 160-adjusting guide rail pair, 170-second guide rail, 180-second slider, 190-force sensor, 210-centering pin, 220-centering connecting sleeve, 230-loading sleeve, 240-first mounting part, 250-second mounting part, 260-loading pin. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] A guide rail pair testing fixture, a guide rail pair testing machine and a guide rail pair testing method according to an embodiment of the present invention will be described below in conjunction with the accompanying drawings.

[0043] Reference Figure 1 and Figure 2The present invention aims to provide an embodiment of a testing machine for a guide pair, more precisely, to provide a testing machine for a rolling linear guide pair, which is convenient for detecting and calculating the static stiffness of the rolling linear guide pair.

[0044] In the test specifications for rolling linear guide pairs in the mechanical industry standard, static stiffness is defined as its ability to resist deformation, that is, the load required to produce unit deformation.

[0045] It indicates the vertical load required to produce a vertical displacement of 1um under the action of load, assuming it is a vertical load.

[0046] Reference Figure 1 and Figure 2 More precisely, the present invention aims to provide a test fixture for a guide rail pair testing machine, thereby improving and optimizing the testing machine and the testing method by improving the test fixture of the testing machine.

[0047] Specifically, in this embodiment, the test fixture mainly includes a lower mounting component and an upper mounting component.

[0048] In detail, the lower mounting assembly includes or has a test machine platform 100, which is used to support and fix the first guide rail 120 and one of the first sliders 130 of the guide rail pair 110 to be tested. Various bolts can be arranged on the platform 100, thereby reducing the fixation of a portion of the guide rail pair 110 to be tested.

[0049] In this embodiment, the machine 100 fixes the first guide rail 120 of the guide rail pair 110 to be tested, so that the installation is convenient and conforms to the normal placement and use state of the guide rail pair. In addition, there are many installation points and the fixation is reliable.

[0050] As for the upper mounting assembly, the upper mounting assembly is disposed above the machine platform 100 and is used to connect the other of the first guide rail 120 and the first slider 130 of the guide rail pair 110 to be tested.

[0051] In this embodiment, the upper mounting assembly fixes the first slider 130 of the guide rail pair 110 to be tested accordingly.

[0052] As for the upper mounting assembly, the upper mounting assembly is also used to connect the loading beam 140 of the testing machine, so that the load transfer of the testing machine can be completed.

[0053] In terms of structure, the upper mounting assembly includes a loading member 150, an adjustment guide rail pair 160, a force sensor 190 and a locking member.

[0054] The loading component 150 is connected to the guide rail pair 110 to be tested. In this embodiment, the loading component 150 is fixed together with the first sliding block 130 of the guide rail pair 110 to be tested.

[0055] One of the second guide rail 170 and the second slider 180 of the guide rail pair 160 is adjusted to be connected to the loading beam 140 of the testing machine, and the other of the second guide rail 170 and the second slider 180 of the guide rail pair 160 is adjusted to be connected to the force sensor 190 .

[0056] In this embodiment, the second guide rail 170 of the adjustment guide rail pair 160 is fixed together with the loading beam 140 , with multiple installation points and reliable fixation.

[0057] The force sensor 190 is used to collect the change data when the loading beam 140 applies force to the guide rail pair 110 to be tested, so as to facilitate the calculation and acquisition of static stiffness data and meet the test requirements.

[0058] As for the locking member, the shortening member can relatively lock or release the second guide rail 170 and the second slider 180 of the adjustment guide rail pair 160 to meet the needs of adjusting the position of the force sensor 190 and fixing the position of the force sensor 190 .

[0059] Structurally, the locking member can be a structure that comes with the adjustment guide pair 160, or it can be in other forms. It can be directly connected to the second guide rail 170 and the second slider 180, or it can be connected to the loading beam 140 and the force sensor 190 to meet the usage requirements.

[0060] Due to illustration limitations, the locking member is not shown.

[0061] Particularly, in the present embodiment, a centering pin 210 and a centering connecting sleeve 220 are provided between the force sensor 190 and the loading member 150 , and the centering pin 210 can be inserted into the centering connecting sleeve 220 for positioning.

[0062] When testing is performed, a loading sleeve 230 is detachably provided between the force sensor 190 and the loading member 150 , and the loading sleeve 230 can be arranged concentrically with the centering pin 210 or the centering connecting sleeve 220 .

[0063] It should be pointed out that in this embodiment, when the adjustment is completed, the centering pin 210 and the centering connecting sleeve 220 can be removed, and then the loading sleeve 230 can be installed to complete the test. Of course, if the space is sufficient, the centering pin 210 and the centering connecting sleeve 220 can also be kept in place, but the size of the loading sleeve 230 will increase, resulting in a complex structure, which is not as good as the embodiment shown in the accompanying drawings.

[0064] In the illustration of this embodiment, the centering pin 210 is disposed at the bottom of the force sensor 190 , and the centering connecting sleeve 220 is installed on the loading member 150 .

[0065] Therefore, the insertion of the centering pin 210 into the centering connecting sleeve 220 can be easily observed, which is convenient for employees to operate.

[0066] In some preferred embodiments, the force sensor 190 may be provided with a first mounting portion 240 , and the first mounting portion 240 is used to mount the centering pin 210 , and the first mounting portion 240 is also used to mount the loading sleeve 230 .

[0067] That is, the loading sleeve 230 and the centering pin 210 share a common installation position, which simplifies the structure and makes the force sensor 190 compact and occupies a small space.

[0068] For the first mounting portion 240 , preferably, the first mounting portion 240 is a round hole, and the first mounting portion 240 may also be a threaded hole. Of course, the first mounting portion 240 may also be a columnar entity, but this will make the structure of the mounting centering pin 210 complicated.

[0069] In some preferred embodiments, the loading member 150 may be provided with a second mounting portion 250 for positioning the centering connecting sleeve 220 , and the second mounting portion 250 is also used for positioning the loading sleeve 230 .

[0070] Similarly, since the centering connection sleeve 220 and the loading sleeve 230 are both sleeve-shaped parts, they share a common installation structure, which simplifies the structure and makes installation easier. It also ensures that the centers of the loading sleeve 230 and the centering connection sleeve 220 coincide with each other.

[0071] In some preferred embodiments, the second mounting portion 250 may be columnar, and the second mounting portion 250 may be plugged and positioned with the centering sleeve 220 and the loading sleeve 230 respectively.

[0072] That is to say, the second mounting portion 250 fully utilizes the inner surfaces of the centering connecting sleeve 220 and the loading sleeve 230, is easy to position, does not introduce more shape improvements, and reduces manufacturing difficulty and manufacturing cost.

[0073] In some preferred embodiments, the second mounting portion 250 is provided with a loading pin 260 , and the loading sleeve 230 is provided with a socket for accommodating the loading pin 260 .

[0074] That is to say, when the loading sleeve 230 is connected to the force sensor 190 by threads or the like, the loading pin 260 passes through the socket, and the loading pin 260 is plugged into the second mounting portion 250, so that the loading sleeve 230 and the second mounting portion 250 are quickly fixed together, which is convenient to use.

[0075] In some preferred embodiments, the adjustment rail pair 160 may be disposed at the bottom of the loading beam 140 , and the extension direction of the adjustment rail pair 160 may be parallel to the loading beam 140 of the testing machine.

[0076] It can be understood that this embodiment provides more easily achievable installation points by making the extension direction of the adjustment guide pair 160 parallel to the loading beam 140 of the testing machine, thereby fixing the adjustment guide pair 160 firmly, and making the center of the force sensor 190 fall on the projection of the loading beam 140 in the up and down directions, ensuring that the force applied by the loading beam 140 meets the requirements.

[0077] In summary, the present invention provides a centering pin 210, a centering connecting sleeve 220, an adjusting guide pair 160 and a locking piece. Therefore, when the centering pin 210 is inserted into the centering connecting sleeve 220, one or both of the guide pair 110 to be tested and the adjusting guide pair 160 move, so that the loading member 150 and the force sensor 190 are centered. Then, the locking piece locks the adjusting guide pair 160, thereby quickly completing the position adjustment of the force sensor 190, so that the center line of the force sensor 190 passes through the center of the guide pair 110 to be tested, meeting the test requirements, replacing the previous adjustment method of repeatedly loosening and adjusting the guide pair 110 to be tested, saving time and effort.

[0078] Next, the present invention sets a loading sleeve 230, so that the loading sleeve 230 is used to realize the force of the loading beam 140 on the guide rail pair 110 to be tested. On the one hand, the force transmission is stable and reliable. On the other hand, there is no need to transmit the bearing force of the centering pin 210 and the centering connecting sleeve 220, thereby avoiding damage to the centering pin 210 and the centering connecting sleeve 220.

[0079] Moreover, the loading sleeve 230 is centrally arranged with the centering pin 210 or the centering connecting sleeve 220, which also ensures that the bearing force, the center of the force sensor 190, and the center of the guide rail pair 110 to be measured coincide with each other, ensuring that the force effect meets the requirements.

[0080] At the same time, by applying the above-mentioned test tooling, the present invention can conveniently complete the adjustment, reduce the number of adjustments, reduce the adjustment time, save time and labor, and greatly improve the test efficiency.

[0081] Furthermore, the present invention does not require additional improvements to the machine 100, so that the testing machine can quickly switch between testing the guide rail pair and other tasks, and has high versatility.

[0082] Correspondingly, due to the improvement of the testing tool and the testing machine, a new testing method for the guide rail pair is also introduced. The testing method of this embodiment mainly includes the following steps:

[0083] Preparation step: fix one of the first guide rail 120 and the first slider 130 of the guide rail pair 110 to be tested to the machine table 100 of the testing machine, install the loading member 150 to the other of the first guide rail 120 and the first slider 130 of the guide rail pair 110 to be tested, fix one of the second guide rail 170 and the second slider 180 of the adjustment guide rail pair 160 to the loading beam 140 of the testing machine, install the force sensor 190 to the other of the second guide rail 170 and the second slider 180 of the adjustment guide rail pair 160, install the centering pin 210 to one of the loading member 150 and the force sensor 190, and install the centering connecting sleeve 220 to the other of the loading member 150 and the force sensor 190;

[0084] Adjustment step: lowering the loading beam 140 of the testing machine so that the centering pin 210 is inserted into the centering connecting sleeve 220, and then adjusting the locking member so that the second guide rail 170 and the second slider 180 of the adjustment guide rail pair 160 are locked;

[0085] The test steps are as follows: raising the loading beam 140 of the test machine, installing the loading sleeve 230, and then applying a load to the guide rail pair 110 to be tested by the loading beam 140, and the test machine performs the test. The specific test operation will not be described in detail.

[0086] Due to the use of the above-mentioned guide rail pair testing machine, the present invention also provides a guide rail pair testing method, which can achieve rapid and accurate coincidence of the center of the force sensor 190 with the center of the guide rail pair 110 to be tested through the cooperation of the centering pin 210 and the centering connecting sleeve 220. On the one hand, it saves adjustment strength and adjustment time, and on the other hand, it ensures that the force-bearing surfaces of the guide rail pair 110 to be tested are consistent during the test, thereby ensuring the accuracy of the calculated static stiffness value.

[0087] It should be pointed out that, according to common sense, the guide rail pair 110 to be measured is approximately perpendicular to the loading beam 140 during installation, so that two vertical movements can be generated to ensure that the center of the force sensor 190 completely coincides with the center of the guide rail pair 110 to be measured.

[0088] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0089] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A test fixture for a guide rail pair, characterized in that: include: A lower mounting assembly having a machine platform (100) of a testing machine, wherein the machine platform (100) is used to support and fix one of a first guide rail (120) and a first slide block (130) of a guide rail pair (110) to be tested; an upper mounting assembly, arranged above the machine platform (100), used to connect the first guide rail (120) and the other of the first slider (130) of the guide rail pair (110) to be tested, and used to connect the loading beam (140) of the testing machine, comprising a loading member (150), an adjusting guide rail pair (160), a force sensor (190), and a locking member, wherein the loading member (150) is connected to the guide rail pair (110) to be tested, one of the second guide rail (170) and the second slider (180) of the adjusting guide rail pair (160) is connected to the loading beam (140) of the testing machine, the other of the second guide rail (170) and the second slider (180) of the adjusting guide rail pair (160) is connected to the force sensor (190), and the locking member is capable of relatively locking or releasing the second guide rail (170) and the second slider (180) of the adjusting guide rail pair (160); Wherein, a centering pin (210) and a centering connecting sleeve (220) are arranged between the force sensor (190) and the loading member (150), and the centering pin (210) can be inserted into the centering connecting sleeve (220) for positioning; A loading sleeve (230) is detachably arranged between the force sensor (190) and the loading member (150), and the loading sleeve (230) can be arranged concentrically with the centering pin (210) or the centering connecting sleeve (220); the centering pin (210) is arranged at the bottom of the force sensor (190), and the centering connecting sleeve (220) is installed on the loading member (150); the loading member (150) is provided with a second mounting portion (250) for positioning the centering connecting sleeve (220), and the second mounting portion (250) is also used to position the loading sleeve (230); the force sensor (190) is provided with a first mounting portion (240), and the first mounting portion (240) is used to install the centering pin (210), and the first mounting portion (240) is also used to install the loading sleeve (230).

2. A test fixture for a guide rail pair according to claim 1, characterized in that: The second mounting portion (250) is columnar, and the second mounting portion (250) can be respectively plugged and positioned with the centering connection sleeve (220) and the loading sleeve (230).

3. A test fixture for a guide rail pair according to claim 2, characterized in that: The second mounting portion (250) is provided with a loading pin (260), and the loading sleeve (230) is provided with a socket for accommodating the loading pin (260).

4. A test fixture for a guide rail pair according to claim 1, characterized in that: The second guide rail (170) of the adjustment guide rail pair (160) is connected to the loading crossbeam (140).

5. A test fixture for a guide rail pair according to claim 1, characterized in that: The adjustment guide rail pair (160) is arranged at the bottom of the loading crossbeam (140), and the extension direction of the adjustment guide rail pair (160) is arranged parallel to the loading crossbeam (140) of the testing machine.

6. A guide rail pair testing machine, characterized in that: A test fixture for a guide rail pair comprising the test fixture of any one of claims 1 to 5.

7. A method for testing a guide rail pair, characterized in that: A testing machine comprising a guide rail pair as claimed in claim 6, further comprising the following steps: Preparation step: fixing one of the first guide rail (120) and the first slider (130) of the guide rail pair (110) to be tested to the machine table (100) of the testing machine, installing the loading member (150) to the other of the first guide rail (120) and the first slider (130) of the guide rail pair (110) to be tested, fixing one of the second guide rail (170) and the second slider (180) of the adjustment guide rail pair (160) to the loading beam (140) of the testing machine, installing the force sensor (190) to the other of the second guide rail (170) and the second slider (180) of the adjustment guide rail pair (160), installing the centering pin (210) to one of the loading member (150) and the force sensor (190), and installing the centering connecting sleeve (220) to the other of the loading member (150) and the force sensor (190); An adjustment step, lowering the loading crossbeam (140) of the testing machine so that the centering pin (210) is inserted into the centering connecting sleeve (220), and then adjusting the locking member so that the second guide rail (170) and the second slider (180) of the adjustment guide rail pair (160) are locked; The testing step comprises raising the loading beam (140) of the testing machine, installing the loading sleeve (230), and then applying a load to the guide rail pair (110) to be tested by the loading beam (140), and then the testing machine performs testing.

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