Rolling linear guide rail pair vertical and horizontal rigidity tension and compression testing device

Abstract

The invention belongs to the technical field of rigidity testing of a rolling linear guide rail pair, and particularly relates to a tension-compression testing device for vertical and horizontal rigidity of a rolling linear guide rail pair. Comprising a base which is provided with a trapezoid support; the guide rail is arranged on the trapezoidal bracket, and a sliding block is arranged on the guide rail; the vertical loading block or the horizontal loading block is mounted on the sliding block; the number of the sensor clamp assemblies is multiple, a displacement sensor is fixed to each sensor clamp assembly, and the displacement sensors are used for detecting the deformation amount; and the vertical and horizontal rigidity test loading assembly is used for loading the vertical loading block or the horizontal loading block. By arranging the sensor clamp assembly, the displacement sensor can be better clamped, the displacement sensor can be accurately positioned, and test data are more accurate.

Description

Technical Field

[0001] The present invention belongs to the technical field of stiffness testing of rolling linear guide pairs, and particularly relates to a vertical and horizontal stiffness tension and compression testing device for rolling linear guide pairs. Background Art

[0002] The rigidity of a rolling linear guide is one of the key indicators for evaluating its performance, and is closely related to the load-bearing capacity, wear resistance and fatigue resistance. Therefore, the design of the tooling for measuring rigidity is crucial, as it is the main tool for obtaining the guide rail stiffness. The deformation of the tooling, the position of the sensor, and the loading method will all significantly affect the measurement accuracy. Therefore, optimizing the tooling design is of great significance.

[0003] According to the stiffness testing principle, stiffness is the applied force under unit deformation, and the magnitude of the force is determined by the rated dynamic load of the guide rail. Therefore, the deformation of the guide rail is the main factor affecting the rigidity measurement. However, the existing vertical and horizontal stiffness tension and compression testing equipment has problems such as large deformation, unreasonable sensor position, and failure to consider the rigidity of the guide rail pair in the tensile state.

[0004] Therefore, there is an urgent need to design a vertical and horizontal stiffness tension and compression testing device for rolling linear guide pairs. Summary of the Invention

[0005] In view of the problems existing in the above-mentioned prior art, the present invention provides a vertical and horizontal stiffness tension and compression testing device for rolling linear guide pairs, and specifically discloses the following technical solutions:

[0006] A vertical and horizontal stiffness tension and compression testing device for rolling linear guide pairs, which is arranged below a rigid indenter and a force sensor, and includes:

[0007] A base, on which a trapezoidal bracket is arranged;

[0008] A guide rail, which is arranged on the trapezoidal bracket, and a slider is arranged on the guide rail;

[0009] A vertical loading block or a horizontal loading block, which is installed on the slider;

[0010] A sensor fixture assembly, several of which are provided, and a displacement sensor is fixed on each sensor fixture assembly, and the displacement sensor is used to detect the deformation amount;

[0011] A vertical and horizontal rigidity test loading assembly, which is used to load the vertical loading block or the horizontal loading block.

[0012] Further, when measuring the vertical rigidity of the guide rail, the guide rail is installed at the top of the trapezoidal bracket by bolts. When measuring the horizontal rigidity of the guide rail, the guide rail is installed on the side of the trapezoidal bracket by bolts.

[0013] Further, when measuring the vertical rigidity of the guide rail, there are a total of five sensor fixture assemblies. Four of the sensor fixture assemblies are fixed on the vertical loading block through measuring tooling, and the contact ends of the displacement sensors fixed thereon are all in contact with the upper surface of the trapezoidal bracket. The other sensor fixture assembly is fixed inside the trapezoidal bracket, and the contact end of the displacement sensor fixed thereon passes through the through hole on the trapezoidal bracket and abuts against the bottom surface of the guide rail. When measuring the horizontal rigidity of the guide rail, there are a total of ten sensor fixture assemblies. Six of the sensor fixture assemblies are fixed on the horizontal loading block, and the contact ends of the displacement sensors fixed thereon abut against the upper surface of the guide rail, the upper surface of the slider, and the upper surface of the trapezoidal bracket respectively. The other four sensor fixture assemblies are fixed inside and at the top of the trapezoidal bracket respectively, and the contact ends of the displacement sensors fixed thereon are all in contact with the side surface of the slider.

[0014] Further, the measuring tooling includes a rectangular frame formed by two short sides of the measuring tooling and two long sides of the measuring tooling. The rectangular frame is sleeved around the periphery of the vertical loading block. Short-side positioning blocks are arranged on the short sides of the measuring tooling, and positioning guide rods and locking screws are arranged on the long sides of the measuring tooling. The locking screw penetrates through the long side of the measuring tooling and is threadedly connected to the long side of the measuring tooling. One end of the locking screw is used to abut against the side surface of the vertical loading block.

[0015] Further, the sensor fixture assembly includes a sensor clamping rod, a sensor clamping nut, a sensor fixture spring, and a sensor fixture positioning sleeve. The sensor clamping nut is threadedly connected to one end of the sensor fixture positioning sleeve. A positioning hole for the displacement sensor to pass through is penetrated through the side wall of the sensor fixture positioning sleeve. One end of the sensor clamping rod penetrates through the sensor clamping nut and extends into the interior of the sensor fixture positioning sleeve and is fixedly connected with a chuck. An arc-shaped clamping groove matched with the displacement sensor is arranged at one end of the chuck away from the sensor clamping rod. The sensor fixture spring is sleeved on the sensor clamping rod and is located between the chuck and the sensor clamping nut.

[0016] Further, the vertical loading block or the horizontal loading block is connected to the slider by bolts.

[0017] Further, the vertical and horizontal rigidity test loading assembly includes a pressure rod shaft, two thrust bearings, a three-jaw disc, and a locking nut. The pressure rod shaft sequentially passes through the first thrust bearing, the three-jaw disc, and the second thrust bearing and is finally locked by the locking nut. The bottom end of the pressure rod shaft is used to apply a load to the vertical loading block or the horizontal loading block.

[0018] Further, large-sized flat steel balls are arranged between the bottom surface of the pressure rod shaft and the upper surface of the vertical loading block or the horizontal loading block, and three small-sized flat steel balls are arranged between the bottom upper surface of the three-jaw disc and the vertical loading block or the horizontal loading block.

[0019] Further, corresponding conical grooves are provided at the positions of the vertical loading block or the horizontal loading block corresponding to the large-sized flat steel balls and the small-sized flat steel balls for limiting the large-sized flat steel balls and the small-sized flat steel balls.

[0020] Further, magnets are inlaid at the positions of the horizontal loading block or the vertical loading block corresponding to each small-sized flat steel ball, and the magnets are used to adsorb the small-sized flat steel balls in the corresponding conical grooves.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] In the present invention, by providing the sensor fixture assembly, the displacement sensor can be better clamped and accurately positioned, making the test data more accurate; the displacement sensor fixed in the trapezoidal bracket through the sensor fixture assembly can measure the deformation amount of the guide rail due to insufficient rigidity of the bolts for fixing the guide rail during tensile loading, effectively removing all deformation amounts except those of the guide rail and the slider. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of the present invention when performing vertical rigidity measurement.

[0024] Figure 2 It is a front view sectional view of the present invention when performing vertical rigidity measurement.

[0025] Figure 3 It is a schematic structural diagram of the vertical and horizontal rigidity test loading assembly of the present invention when performing vertical rigidity measurement.

[0026] Figure 4 It is a schematic structural diagram of the sensor fixture assembly in the present invention.

[0027] Figure 5 It is a front view sectional view of the present invention when performing horizontal rigidity measurement.

[0028] Figure 6The right view of the present invention when performing horizontal rigidity measurement.

[0029] Figure 7 The left sectional view of the present invention when performing horizontal rigidity measurement.

[0030] 1 - Base; 2 - Trapezoidal bracket; 3 - Guide rail; 4 - Slide block; 5 - Displacement sensor; 6 - Sensor clamping rod; 7 - Sensor clamping nut; 8 - Positioning guide rod; 9 - Short side positioning block; 10 - Short side of the measurement tooling; 11 - Long side of the measurement tooling; 12 - Locking screw; 13 - Three - jaw disc; 14 - Vertical loading block; 15 - Magnet; 16 - Pressure bar shaft; 17 - Thrust bearing; 18 - Large flat steel ball; 19 - Small flat steel ball; 20 - Positioning spring piece; 21 - Sensor fixture spring; 22 - Sensor fixture positioning sleeve; 23 - Horizontal loading block; 24 - Locking nut; 25 - Sensor fixture assembly. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0032] Refer to Figure 1-7 , a vertical and horizontal stiffness tension - compression test device for a rolling linear guide pair, which is arranged below a rigid indenter and a force sensor, and includes:

[0033] A base 1, on which a trapezoidal bracket 2 is arranged;

[0034] A guide rail 3, which is arranged on the trapezoidal bracket 2, and a slide block 4 is arranged on the guide rail 3; By setting the guide rail 3 and the slide block 4, the position adjustment is convenient, making the test data more accurate;

[0035] A vertical loading block 14 or a horizontal loading block 23, which is installed on the slide block 4; By setting the vertical loading block 14 or the horizontal loading block 23, the structure and size of the existing vertical rigidity test tooling or horizontal rigidity test tooling for the guide rail are optimized, improving the test efficiency, reducing the test error, and increasing the tensile loading rigidity test for the guide rail 3;

[0036] Sensor fixture assemblies 25, several sensor fixture assemblies 25 are provided, and a displacement sensor 5 is fixed on each sensor fixture assembly 25, and the displacement sensor 5 is used to detect the deformation amount;

[0037] Vertical and horizontal rigidity test loading components are used to load the vertical loading block 14 or the horizontal loading block 23.

[0038] In this embodiment, when measuring the vertical rigidity of the guide rail 3, the guide rail 3 is installed at the top of the trapezoidal bracket 2 by bolts. Laying the guide rail 3 flat can help the vertical loading block 14 apply a force perpendicular to the guide rail 3 to meet the requirements of the guide rail vertical rigidity measurement; when measuring the horizontal rigidity of the guide rail 3, the guide rail 3 is installed on the side of the trapezoidal bracket 2 by bolts. The layout where the upper top surface of the slider 4 is perpendicular to the ground helps to apply the force when measuring the horizontal rigidity of the guide rail.

[0039] In this embodiment, when measuring the vertical rigidity of the guide rail 3, there are a total of five sensor fixture assemblies 25. Four of the sensor fixture assemblies 25 are fixed on the vertical loading block 14 through the measuring tooling, and the contact ends of the displacement sensors 5 fixed thereon are all in contact with the upper surface of the trapezoidal bracket 2. The other sensor fixture assembly 25 is fixed inside the trapezoidal bracket 2, and the contact end of the displacement sensor 5 fixed thereon passes through the through hole on the trapezoidal bracket 2 and abuts against the bottom surface of the guide rail 3. By setting the displacement sensor 5 inside the trapezoidal bracket 2, the deformation amount of the guide rail 3 due to insufficient rigidity of the bolts for fixing the guide rail 3 during tensile loading can be measured, effectively removing all deformation amounts except those of the guide rail 3 and the slider 4 to ensure the accuracy of the measurement results; when measuring the horizontal rigidity of the guide rail 3, there are a total of ten sensor fixture assemblies 25. Six of the sensor fixture assemblies 25 are fixed on the horizontal loading block 23, and the contact ends of the displacement sensors 5 fixed thereon are respectively in contact with the upper surface of the guide rail 3, the upper surface of the slider 4, and the upper surface of the trapezoidal bracket 2. The other four sensor fixture assemblies 25 are respectively fixed inside and at the top of the trapezoidal bracket 2, and the contact ends of the displacement sensors 5 fixed thereon are all in contact with the side surface of the slider 4.

[0040] In this embodiment, the measuring tooling includes a rectangular frame formed by two short sides 10 and two long sides 11 of the measuring tooling. The rectangular frame is sleeved around the periphery of the vertical loading block 14. A short side positioning block 9 is fixedly installed on the short side 10 of the measuring tooling through bolts. A positioning guide rod 8 and a locking screw 12 are provided on the long side 11 of the measuring tooling. A guide spring is sleeved on the positioning guide rod. One end of the positioning guide rod penetrates through the long side of the measuring tooling and is connected to the measuring tooling positioning clamp. The positioning guide rod is slidably connected to the long side of the measuring tooling. The locking screw 12 penetrates through the long side 11 of the measuring tooling and is threadedly connected to the long side 11 of the measuring tooling. One end of the locking screw 12 is used to abut against the side surface of the vertical loading block 14.

[0041] In this embodiment, the sensor fixture assembly 25 includes a sensor clamping rod 6, a sensor clamping nut 7, a sensor fixture spring 21, and a sensor fixture positioning sleeve 22. The sensor clamping nut 7 is threadedly connected to one end of the sensor fixture positioning sleeve 22. A positioning hole for the displacement sensor 5 to pass through is provided through the side wall of the sensor fixture positioning sleeve 22. One end of the sensor clamping rod 6 passes through the sensor clamping nut 7 and extends into the interior of the sensor fixture positioning sleeve 22 and is fixedly connected with a chuck. An arc-shaped clamping groove matching with the displacement sensor 5 is arranged at one end of the chuck away from the sensor clamping rod 6. The sensor fixture spring 21 is sleeved on the sensor clamping rod 6 and is located between the chuck and the sensor clamping nut 7. The elastic force of the spring can push the chuck to tightly clamp the displacement sensor 5 installed in the positioning hole, thereby preventing the displacement of the displacement sensor 5. Moreover, the sensor fixture assembly 25 can better fix the position of the displacement sensor 5, making the test data more comparable and the test results more reliable.

[0042] When the sensor fixture assembly 25 needs to clamp the displacement sensor 5, pull the tail buckle of the sensor clamping rod 6 along the direction of the sensor fixture positioning sleeve 22. After inserting the displacement sensor 5 into the positioning hole of the sensor fixture positioning sleeve 22, release the sensor clamping rod 6. The chuck at the head of the sensor clamping rod 6 fixes the displacement sensor 5 under the extrusion of the sensor fixture spring 21. The sensor fixture assembly 25 is more convenient for disassembling and assembling the displacement sensor 5 during use and is more practical.

[0043] In this embodiment, the vertical loading block 14 or the horizontal loading block 23 is bolted to the slider 4. The thickness of the vertical loading block 14 is twice the total thickness of the guide rail 3 and the slider 4, effectively preventing the uncontrolled force loading caused by the insufficient rigidity of the loading block.

[0044] In this embodiment, the vertical and horizontal rigidity test loading assembly includes a pressure rod shaft 16, two thrust bearings 17, a three-jaw disc 13, and a locking nut 24. The pressure rod shaft 16 passes through the first thrust bearing 17, the three-jaw disc 13, and the second thrust bearing 17 in sequence and is finally locked by the locking nut 24 to form an integral body. The bottom end of the pressure rod shaft 16 is used to apply a load to the vertical loading block 14 or the horizontal loading block 23. By providing the thrust bearings 17, the force applied by the rigid indenter can be effectively borne, and the rotational movement required by the three-jaw disc 13 can also be satisfied.

[0045] In this embodiment, a large flat steel ball 18 is arranged between the bottom surface of the pressure rod shaft 16 and the upper surface of the vertical loading block 14 or the horizontal loading block 23, and three small flat steel balls 19 are arranged between the upper surface of the bottom end of the three-claw disk 13 and the vertical loading block 14 or the horizontal loading block 23. Corresponding conical grooves are provided at the positions corresponding to the large flat steel balls 18 and the small flat steel balls 19 on the vertical loading block 14 or the horizontal loading block 23, which are used to limit the large flat steel balls 18 and the small flat steel balls 19 and prevent uneven force during loading.

[0046] In this embodiment, a magnet 15 is embedded in the position corresponding to each small flat steel ball 19 in the horizontal loading block 23 or the vertical loading block 14, and the magnet 15 is used to adsorb the small flat steel ball 19 in the corresponding conical groove. The magnet 15 embedded in the vertical loading block 14 or the horizontal loading block 23 can adsorb the small flat steel ball 19 when the vertical and horizontal rigidity test loading components are pulling and loading the vertical loading block 14 or the horizontal loading block 23, effectively preventing the small flat steel ball 19 from moving.

[0047] In this embodiment, the vertical and horizontal rigid test loading components are an assembled whole installed on the rigid pressure head to perform compression or tension loading on the vertical loading block 14 or the horizontal loading block 23; the tension loading of the test guide rail 3 is performed by the vertical and horizontal rigid test loading components, which takes the actual working condition of the guide rail 3 into more comprehensive consideration.

[0048] In this embodiment, when the assembled vertical and horizontal rigidity test loading assembly is pressurizing the vertical loading block 14 or the horizontal loading block 23, the three-claw disc 13 needs to be offset from the three-leaf block of the vertical loading block 14 or the horizontal loading block 23, so that the assembled vertical and horizontal rigidity test loading assembly can pressurize the vertical loading block 14 or the horizontal loading block 23 through a large flat steel ball 18; a large flat steel ball 18 can effectively prevent the unbalanced loading phenomenon, so that the loading effect is better.

[0049] In this embodiment, when the assembled vertical and horizontal rigid test loading assembly is performing pull loading on the vertical loading block 14 or the horizontal loading block 23, it is necessary to first offset the three-claw disc 13 from the vertical loading block 14 or the horizontal loading block 23, and lower the assembled vertical and horizontal rigid test loading assembly until the three-claw disc 13 can contact the vertical loading block 14 or the horizontal loading block 23 through the small flat steel ball 19, and when the sound of the positioning spring piece 20 on the vertical loading block 14 or the horizontal loading block 23 being stuck in the groove of the three-claw disc 13 is clearly heard, the vertical loading block 14 or the horizontal loading block 23 is then pulled and loaded; by setting three small flat steel balls 19, the force can always be on the same plane during the pull loading process, effectively preventing the unbalanced loading phenomenon and making the loading effect better.

[0050] The specific operation method of the present invention is as follows:

[0051] When performing vertical rigidity measurement on the guide rail 3, install the guide rail 3 and the slider 4 on the trapezoidal bracket 2, then install the vertical loading block 14 on the slider 4, then fix four displacement sensors 5 on the measuring tooling with the sensor fixture assembly 25, then fix the measuring tooling on the vertical loading block 14, and then place one displacement sensor 5 in the trapezoidal bracket 2 with the sensor fixture assembly 25. The contact end of the displacement sensor 5 abuts against the bottom surface of the guide rail 3 to measure the rigid deformation amount of the bolt that plays a fixing role during tensile loading. The vertical and horizontal rigidity test loading assembly performs compressive loading or tensile loading on the vertical loading block 14 through a large flat steel ball 18 or three small flat steel balls 19. Set the computer value, and set the maximum load to 30% of the rated dynamic load of the guide rail 3. Apply force to the vertical loading block 14 using a rigid indenter, and obtain the displacement-load curve through the computer program to obtain rigidity data;

[0052] When performing horizontal rigidity measurement on the guide rail 3, install the guide rail 3 and the slider 4 on the trapezoidal bracket 2, then install the horizontal loading block 23 on the slider 4, then fix six displacement sensors 5 on the horizontal loading block 23 with the sensor fixture assembly 25, and fix four displacement sensors 5 on the top and inside of the trapezoidal bracket 2 with the sensor fixture assembly 25. Set the computer value, and set the maximum load to 30% of the rated dynamic load of the guide rail 3. Apply force to the horizontal loading block 23 using a rigid indenter, and obtain the displacement-load curve through the computer program to obtain rigidity data.

[0053] The above is only a preferred embodiment of the present invention, and does not impose any limitation on the technical scope of the present invention. Therefore, any minor modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still belong to the scope of the technical solution of the present invention.

Claims

1. A vertical and horizontal stiffness tension and compression test device for a rolling linear guide pair, which is arranged below a rigid indenter and a force sensor, is characterized in that Including: A base, on which a trapezoidal bracket is provided; A guide rail, which is arranged on the trapezoidal bracket, and a slider is arranged on the guide rail; A vertical loading block or a horizontal loading block, which is installed on the slider; A sensor fixture assembly, several of which are provided, and a displacement sensor is fixed on each sensor fixture assembly, and the displacement sensor is used to detect the deformation amount; A vertical and horizontal rigidity test loading assembly, which is used to load the vertical loading block or the horizontal loading block.

2. The vertical and horizontal stiffness tension and compression test device for a rolling linear guide pair according to claim 1, wherein When measuring the vertical rigidity of the guide rail, the guide rail is installed at the top of the trapezoidal bracket through bolts. When measuring the horizontal rigidity of the guide rail, the guide rail is installed on the side of the trapezoidal bracket through bolts.

3. A vertical and horizontal stiffness tension and compression test device for a rolling linear guide pair according to claim 2, characterized in that When measuring the vertical rigidity of the guide rail, there are a total of five sensor fixture assemblies. Four of the sensor fixture assemblies are fixed on the vertical loading block through a measuring tooling, and the contact ends of the displacement sensors fixed thereon are all in contact with the upper surface of the trapezoidal bracket. The other sensor fixture assembly is fixed inside the trapezoidal bracket, and the contact end of the displacement sensor fixed thereon passes through the through hole on the trapezoidal bracket and abuts against the bottom surface of the guide rail. When measuring the horizontal rigidity of the guide rail, there are a total of ten sensor fixture assemblies. Six of the sensor fixture assemblies are fixed on the horizontal loading block, and the contact ends of the displacement sensors fixed thereon are respectively in contact with the upper surface of the guide rail, the upper surface of the slider, and the upper surface of the trapezoidal bracket. The other four sensor fixture assemblies are respectively fixed inside and at the top of the trapezoidal bracket, and the contact ends of the displacement sensors fixed thereon are all in contact with the side surface of the slider.

4. A vertical and horizontal stiffness tension and compression test device for a rolling linear guide pair according to claim 3, characterized in that, The measuring tooling includes a rectangular frame formed by two short sides of the measuring tooling and two long sides of the measuring tooling. The rectangular frame is sleeved around the periphery of the vertical loading block. Short-side positioning blocks are arranged on the short sides of the measuring tooling, and a positioning guide rod and a locking screw are arranged on the long sides of the measuring tooling. The locking screw penetrates through the long side of the measuring tooling and is threadedly connected with the long side of the measuring tooling. One end of the locking screw is used to abut against the side surface of the vertical loading block.

5. A vertical and horizontal stiffness tension and compression test device for a rolling linear guide pair according to claim 4, characterized in that The sensor fixture assembly includes a sensor clamping rod, a sensor clamping nut, a sensor fixture spring, and a sensor fixture positioning sleeve. The sensor clamping nut is threadedly connected to one end of the sensor fixture positioning sleeve. A positioning hole for the displacement sensor to pass through is penetrated through the side wall of the sensor fixture positioning sleeve. One end of the sensor clamping rod penetrates through the sensor clamping nut and extends into the interior of the sensor fixture positioning sleeve and is fixedly connected with a chuck. An arc-shaped clamping groove matched with the displacement sensor is arranged at one end of the chuck away from the sensor clamping rod. The sensor fixture spring is sleeved on the sensor clamping rod and is located between the chuck and the sensor clamping nut.

6. A vertical and horizontal stiffness tension and compression test device for a rolling linear guide pair according to claim 1, characterized in that The vertical loading block or the horizontal loading block is connected to the slider through bolts.

7. A vertical and horizontal stiffness tension and compression test device for a rolling linear guide pair according to claim 1, characterized in that The vertical and horizontal rigid test loading assembly includes a pressure rod shaft, two thrust bearings, a three-jaw disc and a locking nut. The pressure rod shaft sequentially passes through the first thrust bearing, the three-jaw disc and the second thrust bearing and is finally locked by the locking nut. The bottom end of the pressure rod shaft is used to apply a load to the vertical loading block or the horizontal loading block.

8. A vertical and horizontal stiffness tension and compression test device for a rolling linear guide pair according to claim 7, characterized in that Large flat steel balls are arranged between the bottom surface of the pressure rod shaft and the upper surface of the vertical loading block or the horizontal loading block, and three small flat steel balls are arranged between the bottom upper surface of the three-jaw disc and the vertical loading block or the horizontal loading block.

9. A vertical and horizontal stiffness tension and compression test device for a rolling linear guide pair according to claim 8, characterized in that Conical grooves corresponding to the large flat steel balls and the small flat steel balls are respectively formed in the vertical loading block or the horizontal loading block at positions corresponding to the large flat steel balls and the small flat steel balls for limiting the large flat steel balls and the small flat steel balls.

10. A vertical and horizontal stiffness tension and compression test device for a rolling linear guide pair according to claim 9, characterized in that, Magnets are respectively embedded in the horizontal loading block or the vertical loading block at positions corresponding to each small flat steel ball, and the magnets are used to adsorb the small flat steel balls in the corresponding conical grooves.

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