Rotary friction testing machine

Abstract

The utility model relates to the technical field of rotary friction testing devices, and discloses a rotary friction testing machine which comprises a fixing mechanism and a rotating mechanism, the fixing mechanism comprises a lower plate and an upper plate, the rotating mechanism comprises a prism rotating shaft, and the lower end of the prism rotating shaft is rotatably arranged at the center of the upper end of the lower plate in a penetrating mode through a rotating shaft. The upper end of the prism rotating shaft penetrates through the center of the lower end of the upper plate in a rotating mode through a rotating shaft. According to the testing machine disclosed by the utility model, the distance from the coating test plate to the prism rotating shaft, the pitching angle and the deflection angles of the two sides are flexibly adjusted through the matching of the plurality of lead screws and the sliding blocks, and the movement of the sliding blocks is accurately controlled through the shifting wheels, so that the consistency and repeatability of test conditions are ensured; and meanwhile, a servo motor is adopted to drive a prism rotating shaft to drive a plurality of pieces of friction cloth fixed by pressing plates to rotate, so that efficient batch testing of as many as four coating test plates is realized, the operation process is simplified, the use threshold and the training cost are reduced, and batch detection requirements in industrial production are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotating friction test device technical field especially relates to a rotating friction testing machine. BACKGROUND

[0002] Wear resistance is an index to measure the material's ability to resist wear in a specific friction environment. In the paint industry, it specifically refers to the protective effectiveness of the coating against mechanical friction. This ability is crucial for coatings as it involves the comprehensive performance of multiple properties such as hardness, adhesion, and cohesion of the coating. Wear is a common phenomenon with complex causes, which may include physical abrasive wear, chemical corrosion wear, mechanical fatigue wear, and adhesive wear between materials. In order to ensure product quality, surface wear resistance testing must be conducted during the research and development stage of the coating product and the quality inspection process after production to verify whether the coating has reached the expected durability standard.

[0003] After searching, the existing patent (publication number: CN209570474U) discloses a "test plate surface coating wear resistance testing machine, including shell and workbench, the shell is equipped with driving mechanism, the driving mechanism is connected with movement assembly, the movement assembly includes support rod, support seat and mounting seat, the support rod is rotatably installed in the shell, the support seat is fixed on the head of the support rod, the support seat is slidably connected with the sliding block, the sliding block is threadedly connected with the screw rod, the mounting seat is fixed on the sliding block, the mounting seat is fixed with the mounting column, the lower end of the mounting column is threadedly connected with the tool bit, the upper end of the mounting seat is sleeved with the counterweight; the driving mechanism includes driving motor and gear, the disc surface of the gear is provided with a pin shaft, the tail of the support rod is provided with a strip-shaped sliding groove along the length direction for sleeving the pin shaft. The test plate surface coating wear resistance testing machine can adjust the contact force and oscillation frequency according to the demand to meet different experimental requirements, and has the advantages of simple structure, convenient operation and stable operation."

[0004] The inventor found that the existing technology has the following problems in the process of implementing the present application: Although the above-mentioned comparative patent provides a test plate surface coating wear resistance testing machine by setting the shell, workbench, driving mechanism, support rod, and support seat, etc., the friction test of the coating test plate is realized by the reciprocating motion of the support rod, which cannot realize multi-directional or rotating friction test, and only a single test plate can be tested at a time, so the test efficiency needs to be improved. Therefore, the technical personnel in the field provide a rotating friction testing machine to solve the problems raised in the background art. UTILITY MODEL CONTENTS

[0005] The utility model discloses a rotating friction testing machine which can realize flexible adjustment of the distance, pitch angle and deflection angle of the coating test plate to the prism rotating shaft, accurate control of the movement of the sliding block through the dial, consistency and repeatability of the test conditions, efficient batch testing of up to four coating test plates through the driving of the prism rotating shaft by the servo motor, simplified operation process, reduced use threshold and training cost, and batch detection requirements in industrial production.

[0006] To achieve the above object, the utility model provides the following technical scheme: a rotating friction testing machine, including fixed mechanism and rotating mechanism, the fixed mechanism includes lower plate and upper plate, the rotating mechanism includes prism rotating shaft, the lower end of prism rotating shaft is through the rotating shaft and is set to the lower plate upper end center, and the upper end of prism rotating shaft is through the rotating shaft and is set to the upper plate lower end center.

[0007] Further, the lower plate and the upper plate are centrally symmetrically provided with two rectangular holes near the four edges of the upper and lower ends, and a screw rod is rotatably arranged between the centers of the two smaller sides of the sixteen rectangular holes.

[0008] Further, the lower plate and the upper plate are centrally symmetrically provided with two rectangular holes near the four edges of the upper and lower ends, and a screw rod is rotatably arranged between the centers of the two smaller sides of the sixteen rectangular holes.

[0009] Further, the lower plate and the upper plate are centrally symmetrically provided with two rectangular holes near the four edges of the upper and lower ends, and a screw rod is rotatably arranged between the centers of the two smaller sides of the sixteen rectangular holes.

[0010] Further, the lower plate and the upper plate are centrally symmetrically provided with two rectangular holes near the four edges of the upper and lower ends, and a screw rod is rotatably arranged between the centers of the two smaller sides of the sixteen rectangular holes.

[0011] Further, the upper end of the upper plate is fixedly provided with a servo motor, and the rotating shaft fixedly connected to the upper end of the prism rotating shaft penetrates the center of the upper plate and is fixedly connected to the output end of the lower end of the servo motor.

[0012] Further, the three sides of the prism rotating shaft are symmetrically threaded with two second pressing bolts, and the outer end of the two second pressing bolts on the same side of the prism rotating shaft is symmetrically threaded with a pressing plate.

[0013] Further, the three pressing plates are symmetrically and equally spaced.

[0014] The utility model has the advantages of the following beneficial effects:

[0015] 1. The utility model discloses a rotary friction testing machine, the testing machine is through the cooperation of a plurality of lead screws and the sliding block of the threaded sleeve of the stem, can realize the flexible adjustment of the distance of coating test board to the prism rotating shaft, the pitch angle and the deflection angle of both sides, through the cooperation of a plurality of lead screws and the pinwheel of the outer end fixed setting, can accurately control the movement of the sliding block, and then realize the accurate adjustment of coating test board position and angle, wherein the use of scale mark further improves the accuracy of adjustment, ensures the consistency and repeatability of each test condition, so that the testing machine can adapt to various test requirements, improves the applicability of equipment and the diversity of experiment.

[0016] 2. The utility model discloses a rotary friction testing machine, the testing machine adopts servo motor to drive the rotation of the prism rotating shaft, can carry out rotary friction test to four coating test boards simultaneously, significantly improves test efficiency, reduces the time and manpower cost required for single test, is especially suitable for batch detection demand in industrial production, and simultaneously, the user can quickly complete the installation of coating test board and the adjustment of position angle by simply turning the pinwheel and adjusting the first pressing bolt. This convenient operation mode reduces the threshold of equipment use, so that the operator can easily start, effectively reduces the use cost and learning and training cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the axonometric view of the utility model;

[0018] Figure 2 It is the axonometric view of the utility model when observing from the lower end;

[0019] Figure 3 It is the axonometric view of the utility model when not installing the lower plate and the upper plate;

[0020] Figure 4 It is the axonometric view of the utility model.

[0021] LEGEND:

[0022] 1, fixed mechanism; 2, rotating mechanism; 101, lower plate; 102, upper plate; 103, rectangular hole; 104, sliding slot; 105, screw rod; 106, handle; 107, sliding block; 108, convex strip; 109, telescopic rod; 110, connecting rod; 111, first compression bolt; 112, fixed plate; 113, bolt hole; 114, scale; 201, servo motor; 202, prism rotating shaft; 203, second compression bolt; 204, pressing plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] Referring to Figure 1 and Figure 2 , the present application provides an embodiment: a rotary friction testing machine, comprising a fixed mechanism 1 and a rotating mechanism 2, the fixed mechanism 1 comprising a lower plate 101 and an upper plate 102, the rotating mechanism 2 comprising a prism rotating shaft 202, the lower end of the prism rotating shaft 202 being rotatably arranged through a rotating shaft to the upper end center of the lower plate 101, the upper end of the prism rotating shaft 202 being rotatably arranged through a rotating shaft to the lower end center of the upper plate 102.

[0025] Specifically, the lower plate 101 and the upper plate 102 in the fixed mechanism 1 provide a good installation position for the prism rotating shaft 202 in the rotating mechanism 2 and provide a good limiting action when the prism rotating shaft 202 rotates.

[0026] Referring to Figure 2 , Figure 3 and Figure 4 : the lower plate 101 and the upper plate 102 are centrally symmetrically provided with two rectangular holes 103 near the four edges through the upper and lower ends, two smaller sides of sixteen rectangular holes 103 are rotatably provided with screw rods 105 between the centers, the rod bodies of sixteen screw rods 105 are threadedly sleeved with sliding blocks 107, and the outer ends of sixteen screw rods 105 are respectively provided with handle 106 through the lower plate 101 or the upper plate 102;

[0027] Sixteen sliding blocks 107 are fixedly provided with convex strips 108 near the middle positions of the two sides of the larger area of the sixteen rectangular holes 103, the two larger sides of the sixteen rectangular holes 103 are provided with sliding slots 104 at the middle positions of the two sides, and thirty-two convex strips 108 are respectively slidably arranged in thirty-two sliding slots 104;

[0028] The lower eight sliders 107 are connected with telescopic rods 109 at the centers of the upper ends by spherical hinges, the upper eight sliders 107 are connected with connecting rods 110 at the centers of the lower ends by spherical hinges, two connecting rods 110 above each telescopic rod 109 are fixedly provided with a fixed plate 112, two bolt holes 113 are symmetrically formed at the centers of the outer sides of the four fixed plates 112, the lower eight sliders 107 are threadedly sleeved with first compression bolts 111 at the centers of the lower ends and the upper eight sliders 107 are threadedly sleeved with first compression bolts 111 at the centers of the upper ends, and the lower plate 101 and the upper plate 102 are fixedly provided with scales 114 at the outer sides of the upper ends of each rectangular hole 103;

[0029] Specifically, in use, according to actual needs, the user can use the external clamping lifting mechanism to clamp and fix the lower plate 101, according to batch detection needs, the user can fix at least one to four coating test plates to the inner sides of the corresponding fixed plates 112 through the two bolt holes 113 on each fixed plate 112 with bolts at the same time, if it is necessary to adjust the distance between a coating test plate and the prism shaft 202, only need to loosen the four first compression bolts 111 at the upper and lower ends of the fixed plate 112 to which the coating test plate is fixed, drive the corresponding sliders 107 to slide well in the rectangular holes 103 through the convex strips 108 which are slidably arranged at both sides in the sliding grooves 104 by simultaneously turning the two pinwheels 106 below and the two pinwheels 106 below to drive the respective connecting screw rods 105 to rotate, so that the two sliders 107 above and the two sliders 107 below move inward or outward by a certain scale 114 at the same time, so that the coating test plate approaches or moves away from the prism shaft 202 along with the fixed plate 112 to which it is fixed;

[0030] If it is necessary to change the pitch angle of a coating test plate, only need to loosen the four first compression bolts 111 at the upper and lower ends of the fixed plate 112 to which the coating test plate is fixed, drive the corresponding sliders 107 to slide well in the rectangular holes 103 through the convex strips 108 which are slidably arranged at both sides in the sliding grooves 104 by simultaneously turning the two pinwheels 106 below or the two pinwheels 106 below to drive the respective connecting screw rods 105 to rotate, so that the two sliders 107 above and the two sliders 107 below point to different scales 114, and the two telescopic rods 109 connected with the two sliders 107 above at the upper ends by spherical hinges are elongated or shortened, so that the coating test plate presents a certain pitch angle along with the fixed plate 112 to which it is fixed;

[0031] If you need to change the deflection angles on both sides of a coating test plate, just loosen the four first clamping bolts 111 at the upper and lower ends of the fixing plate 112 to which it is fixed, and simultaneously turn the two dial wheels 106 on the upper and lower sides of the same side to drive the connected screw rods 105 to rotate, thereby driving the corresponding sliders 107 to slide well in the rectangular holes 103 through the convex strips 108 set inside the slide grooves 104 on both sides, so that the two sliders 107 on one side and the two sliders 107 on the other side point to different scales 114, so that the coating test plate forms a certain deflection angle along the two sides of the fixing plate 112 to which it is fixed.

[0032] Reference Figure 2 、 Figure 3 and Figure 4 : A servo motor 201 is fixedly provided at the center of the upper end of the upper plate 102, and a rotating shaft fixedly connected to the upper end of the prismatic rotating shaft 202 passes through the center of the upper plate 102 and is fixedly connected to the output end of the lower end of the servo motor 201. The outer sides of the three side surfaces of the prismatic rotating shaft 202 are axially symmetrically threaded with two second clamping bolts 203, and a pressure plate 204 is threadedly sleeved between the outer ends of the two second clamping bolts 203 located on the same side surface of the prismatic rotating shaft 202 and the side surface of the prismatic rotating shaft 202. The three pressure plates 204 are arranged symmetrically and at equal intervals.

[0033] Specifically, during use, according to actual needs, the user can place an appropriate number of friction cloths between the pressure plate 204 and the side of the prism shaft 202 and fix the friction cloths well by tightening the second clamping bolt 203. The servo motor 201 drives the prism shaft 202 to rotate, driving multiple friction cloths to rotate, and simultaneously performing a rotational friction test on the coated test panels fixed on the inner sides of the four fixed plates 112.

[0034] Working principle: When in use, according to actual needs, the user can use the external clamping and lifting mechanism to clamp and fix the lower plate 101 well. According to the needs of batch testing, the user can fix at least one or at most four coating test plates to the inner side of the corresponding fixing plate 112 through the two bolt holes 113 on each fixing plate 112 with bolts. If it is necessary to adjust the distance between a coating test plate and the prismatic rotating shaft 202, it is only necessary to loosen the four first clamping bolts 111 at the upper and lower ends of the fixing plate 112 to which it is fixed, and simultaneously turn the two dial wheels 106 below and the two dial wheels 106 below to drive the respectively connected screw rods 105 to rotate, thereby driving the corresponding slider 107 to slide well in the rectangular hole 103 through the convex strips 108 set inside the sliding groove 104 on both sides, so that the upper two sliders 107 and the lower two sliders 107 move inward or outward at the same time to a certain scale 114, so that the coating test plate is moved closer to or away from the prismatic rotating shaft 202 along with the fixing plate 112 to which it is fixed;

[0035] Second, if the pitch angle of a coating test plate needs to be changed, only the four first compression bolts 111 fixed to the upper and lower ends of the fixed plate 112 are loosened, the two lower or upper knobs 106 are simultaneously turned to drive the respective connecting screw rods 105 to rotate, thereby driving the corresponding sliding blocks 107 to slide well in the rectangular hole 103 through the convex strips 108 slidingly arranged inside the sliding groove 104 on both sides, so that the two upper and lower sliding blocks 107 are pointed to different scales 114, and the two telescopic rods 109 connected to the upper end of the lower sliding blocks 107 are lengthened or shortened, so that the coating test plate and the fixed plate 112 fixed thereto have a certain pitch angle;

[0036] Then, if the deflection angle of a coating test plate needs to be changed, only the four first compression bolts 111 fixed to the upper and lower ends of the fixed plate 112 are loosened, the two knobs on the same side are simultaneously turned to drive the respective connecting screw rods 105 to rotate, thereby driving the corresponding sliding blocks 107 to slide well in the rectangular hole 103 through the convex strips 108 slidingly arranged inside the sliding groove 104 on both sides, so that the two sliding blocks 107 on one side and the two sliding blocks 107 on the other side are pointed to different scales 114, so that the two sides of the coating test plate and the fixed plate 112 fixed thereto have a certain deflection angle.

[0037] Finally, the user can place a proper number of friction cloths between the pressing plate 204 and the side of the prism shaft 202 and fix the friction cloths well by tightening the second compression bolt 203, the servo motor 201 drives the prism shaft 202 to rotate, driving the multiple friction cloths to rotate, and simultaneously performing a rotating friction test on the coating test plates fixed inside the four fixed plates 112.

[0038] Finally, it should be noted that the above only describes preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or equivalently replace some technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A rotary friction testing machine, comprising a fixing mechanism (1) and a rotating mechanism (2), characterized in that: The fixing mechanism (1) comprises a lower plate (101) and an upper plate (102), and the rotating mechanism (2) comprises a prism rotating shaft (202), wherein the lower end of the prism rotating shaft (202) is rotated and arranged to the center of the upper end of the lower plate (101) through the rotating shaft, and the upper end of the prism rotating shaft (202) is rotated and arranged to the center of the lower end of the upper plate (102) through the rotating shaft.

2. A rotary friction testing machine according to claim 1, characterized in that: The lower plate (101) and the upper plate (102) are provided with two rectangular holes (103) through the middle of the upper and lower ends and near the four sides in a centrally symmetrical manner. A screw rod (105) is rotatably provided between the centers of the two smaller side surfaces of the sixteen rectangular holes (103). The rod bodies of the sixteen screw rods (105) are all threadedly sleeved with sliders (107). The outer ends of the sixteen screw rods (105) respectively penetrate the lower plate (101) or the upper plate (102) and are fixedly connected to a thumbwheel (106).

3. A rotary friction testing machine according to claim 2, characterized in that: The sixteen sliders (107) are fixedly provided with convex strips (108) at the middle positions on both sides of the two larger side surfaces close to the sixteen rectangular holes (103), and the sixteen rectangular holes (103) are provided with sliding grooves (104) at the middle positions on both sides of the two larger side surfaces, and the thirty-two convex strips (108) are respectively slidably provided inside the thirty-two sliding grooves (104).

4. A rotary friction testing machine according to claim 2, characterized in that: The upper centers of the eight lower sliders (107) are all connected to the telescopic rods (109) by ball hinges, and the lower centers of the eight upper sliders (107) are all connected to the connecting rods (110) by ball hinges. A fixing plate (112) is fixed between two adjacent telescopic rods (109) and the two connecting rods (110) directly above them, and two bolt holes (113) are provided at the outer centers of the four fixing plates (112) in an axially symmetrical manner.

5. The rotary friction testing machine according to claim 2, characterized in that: The centers of the lower ends of the eight lower sliders (107) and the centers of the upper ends of the eight upper sliders (107) are both threadedly sleeved with first clamping bolts (111), and the upper ends of the lower plate (101) and the upper plate (102) are fixedly provided with scales (114) at positions outside each rectangular hole (103).

6. The rotary friction testing machine according to claim 1, characterized in that: A servo motor (201) is fixedly provided at the center of the upper end of the upper plate (102), and a rotating shaft fixedly connected to the upper end of the prism rotating shaft (202) passes through the center of the upper plate (102) and is fixedly connected to the output end of the lower end of the servo motor (201).

7. The rotary friction testing machine according to claim 1, characterized in that: Two second clamping bolts (203) are threadedly sleeved on the outer sides of the three side surfaces of the prism shaft (202) in an axisymmetric manner, and a pressure plate (204) is threadedly sleeved between the outer ends of the two second clamping bolts (203) located on the same side surface of the prism shaft (202) and the side surface of the prism shaft (202).

8. The rotary friction testing machine according to claim 7, characterized in that: The three pressing plates (204) are arranged symmetrically at equal intervals.

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