Testing equipment for testing unparallelism of pressed surface of workpiece

Abstract

The utility model discloses test equipment for testing non-parallelism of a pressed surface of a workpiece. The test equipment comprises a base; the two stretching frames in the same pair are arranged on the base; the transverse frames are arranged between the two stretching frames in the same pair; the static pressure driver is arranged on the transverse frame; the fixed pressure plate is arranged on the base, and the fixed pressure plate is used for placing a test workpiece; the connecting disc is arranged on the static pressure drive; the multiple connecting pieces are arranged on the connecting disc at intervals, and the connecting pieces can move relative to the connecting disc; and the plurality of connecting pieces are rotatably connected with the movable pressure plate. When the two pressed surfaces of the test workpiece are not parallel, one pressed surface of the test workpiece is attached to the fixed pressure plate, and the extension length of the connecting piece is adjusted, so that the movable pressure plate is inclined relative to the connecting plate, the movable pressure plate is parallel to the other pressed surface of the test workpiece, and the test of the test workpiece is completed through static pressure driving. Therefore, the test equipment can adapt to test workpieces with non-parallel compression surfaces.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of testing equipment, in particular to a testing equipment for testing workpieces with non-parallel pressure surfaces. BACKGROUND

[0002] The testing equipment is used for testing the strength and tightness of workpieces to ensure that the strength and tightness of the workpieces meet the design requirements, so as to avoid the issuance of defective workpieces which have safety hazards when used.

[0003] In the related art, the conventional testing equipment cannot adjust the angle of the pressure surfaces of the two pressure plates, or the angle adjustment is too small. For the testing workpieces with a large included angle between the two pressure surfaces, the conventional testing equipment cannot test them, which limits the use range of the conventional testing equipment.

[0004] Therefore, it is urgent to provide a testing equipment for testing workpieces with non-parallel pressure surfaces, which has a wide use range and high testing precision. CONTENT OF THE INVENTION

[0005] The present application provides a testing equipment for testing workpieces with non-parallel pressure surfaces, which aims to solve the problem that the conventional testing equipment cannot adjust the angle of the pressure surfaces of the two pressure plates, or the angle adjustment is too small. For the testing workpieces with a large included angle between the two pressure surfaces, the conventional testing equipment cannot test them, which limits the use range of the conventional testing equipment.

[0006] To achieve the above-mentioned purpose, the present application provides a testing equipment for testing workpieces with non-parallel pressure surfaces, which comprises a base, a pair of stretching frames, a cross frame, a static pressure drive, a fixed pressure plate, a connecting disc, a plurality of connecting pieces, and a movable pressure plate.

[0007] In some embodiments, the connecting piece is provided with a ball head at one end away from the connecting disc, and the connecting piece is screwed to the connecting disc. A joint screw sleeve is provided with a first spherical surface inside, and the first spherical surface is adapted to the ball head. The connecting disc is provided with a plurality of connecting holes, and the connecting holes are screwed to the joint screw sleeve. A protrusion is provided on the movable pressure plate and located in the connecting hole, and the protrusion is provided with a second spherical surface adapted to the ball head.

[0008] In some embodiments, further comprising: a first locking nut located on one side of the connecting disc and abutting the connecting disc, the first locking nut threaded with the connecting member; and a second locking nut located on the other side of the connecting disc and abutting the connecting disc, the first locking nut threaded with the connecting member.

[0009] In some embodiments, further comprising: a plurality of friction grooves, the plurality of friction grooves being arranged between the side of the movable pressing disc facing the test workpiece and the side of the fixed pressing disc facing the test workpiece.

[0010] In some embodiments, further comprising: a first connecting hole, the first connecting hole being arranged on the fixed pressing disc, the fixed pressing disc being connected to the base through the first connecting hole.

[0011] In some embodiments, further comprising: a second connecting hole, the second connecting hole being arranged on the connecting disc, the connecting disc being connected to the static pressure drive through the second connecting hole.

[0012] The technical scheme of the present application provides a test device for testing a test workpiece with non-parallel pressure surfaces, comprising: a base, a pair of stretching frames, a cross frame, a static pressure drive, a connecting disc, a plurality of connecting members, and a movable pressing disc. The two stretching frames of the same pair are arranged on the base. The cross frame is arranged between the two stretching frames of the same pair. The static pressure drive is arranged on the cross frame. The fixed pressing disc is arranged on the base and is used for placing the test workpiece. The connecting disc is arranged on the static pressure drive. The plurality of connecting members are arranged at intervals on the connecting disc and can move relative to the connecting disc. The plurality of connecting members are rotatably connected to the movable pressing disc. When the static pressure test of the test workpiece is performed, the test workpiece is placed on the fixed pressing disc, so that one pressure surface of the test workpiece is attached to the fixed pressing disc. At this time, the static pressure drive drives the connecting disc to move, and the connecting member drives the movable pressing disc to press against the test workpiece, so that the movable pressing disc is attached to the other pressure surface of the test workpiece. The static pressure drive outputs a preset static pressure to complete the static pressure test of the test workpiece. When the two pressure surfaces of the test workpiece are not parallel, one pressure surface of the test workpiece is attached to the fixed pressing disc, the length of the connecting member extending out of the connecting disc is adjusted one by one, so that the movable pressing disc is inclined relative to the connecting disc and parallel to the other pressure surface of the test workpiece, and then the test of the test workpiece is completed according to the foregoing steps. Through the above steps, the test device can adapt to the test workpiece with non-parallel pressure surfaces, and the angle adjustment range of the movable pressing disc is wide, so that the test device can adapt to more types of test workpieces with non-parallel pressure surfaces, and the adaptability of the test device is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0014] Figure 1 It is a perspective view of a testing device for testing non-parallelism of a pressure surface of a workpiece according to an embodiment of the present application.

[0015] Figure 2 It is a perspective view of a fixed pressure disc, a connecting disc, a plurality of connecting members and a movable pressure disc according to an embodiment of the present application.

[0016] Figure 3 It is a sectional view of a fixed pressure disc, a connecting disc, a plurality of connecting members and a movable pressure disc according to an embodiment of the present application.

[0017] Figure 4 It is an enlarged view of part A in 3.

[0018] In the figure: base 1, fixed pressure disc 2, testing workpiece 3, movable pressure disc 4, connecting disc 5, output end 6, cross frame 7, static pressure drive 8, stretching frame 9, friction groove 10, connecting member 11, first locking nut 12, second connecting hole 13, second locking nut 14, ball head 15, joint screw sleeve 16, second spherical surface 17, protrusion 18, first spherical surface 19. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only represent some 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 any creative effort belong to the scope of protection of the present application.

[0020] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0021] It should also be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be a middle element.

[0022] In addition, the descriptions involving "first", "second", etc. in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope claimed by the present application.

[0023] Referring to Figure 1 and Figure 2 The present application proposes a testing device for testing the non-parallelism of the pressure surface of a workpiece, which comprises a base 1, a pair of stretching frames 9, the two stretching frames 9 of the pair being arranged on the base 1, a cross frame 7 arranged between the two stretching frames 9 of the pair, a static pressure drive 8 arranged on the cross frame 7, a fixed pressure plate 2 arranged on the base 1, the fixed pressure plate 2 being used for placing a testing workpiece 3, a connecting plate 5 arranged on the static pressure drive 8, a plurality of connecting pieces 11 arranged at intervals on the connecting plate 5, the connecting pieces 11 being movable relative to the connecting plate 5, and a movable pressure plate 4 rotatably connected to the connecting pieces 11.

[0024] The base 1 is the structural basis of the testing device for testing the non-parallelism of the pressure surface of a workpiece, and other structures on the testing device for testing the non-parallelism of the pressure surface of a workpiece are directly or indirectly mounted on the base 1. The pair of stretching frames 9 is the structural basis of the cross frame 7 and the static pressure drive 8, the fixed pressure plate 2 is arranged on the base 1, one pressure surface of the testing workpiece 3 is placed on the fixed pressure plate 2, the connecting plate 5 is connected to the static pressure drive 8, the movable pressure plate 4 is indirectly connected to the static pressure drive 8 through the connecting plate 5 and the connecting pieces 11, and the movable pressure plate 4 contacts the other pressure surface of the testing workpiece 3. At this time, the static pressure drive 8 outputs static pressure, and the testing of the testing workpiece 3 is completed. The plurality of connecting pieces 11 is a core component of the testing device for testing the non-parallelism of the pressure surface of a workpiece, and the movable pressure plate 4 is mounted on the connecting plate 5 through the plurality of connecting pieces 11. By changing the length of the connecting pieces 11 extending out of the connecting plate 5, the angle of the movable pressure plate 4 relative to the connecting plate 5 can be changed, so that the movable pressure plate 4 can adapt to the pressure surface of the testing workpiece 3.

[0025] Specifically, when the static pressure test is performed on the test workpiece 3, the test workpiece 3 is placed on the fixed platen 2 so that one of the pressure receiving surfaces of the test workpiece 3 is attached to the fixed platen 2. At this time, the static pressure drive 8 drives the connecting plate 5 to move and drives the movable platen 4 to press against the test workpiece 3 through the connecting member 11 so that the movable platen 4 is attached to the other pressure receiving surface of the test workpiece 3. The static pressure drive 8 outputs a preset static pressure to complete the static pressure test on the test workpiece 3. When the two pressure receiving surfaces of the test workpiece 3 are not parallel, one of the pressure receiving surfaces of the test workpiece 3 is attached to the fixed platen 2, the length of the connecting member 11 extending from the connecting plate 5 is adjusted one by one so that the movable platen 4 is inclined relative to the connecting plate 5 and the movable platen 4 is parallel to the other pressure receiving surface of the test workpiece 3, and then the test workpiece 3 is tested according to the foregoing steps. Through the foregoing steps, the test equipment can adapt to the test workpiece 3 with non-parallel pressure receiving surfaces, and the angle adjustment range of the movable platen 4 is wide, so that the test equipment can adapt to more types of test workpieces 3 with non-parallel pressure receiving surfaces, and the adaptability of the test equipment is enhanced.

[0026] In detail, the static pressure drive 8 is a hydraulic cylinder, and the end of the static pressure drive 8 is provided with an output end 6, and the static pressure drive 8 is connected to the connecting plate 5 through the output end 6. The base 1 is also provided with a hydraulic station and a control panel for controlling the progress of the pressure test.

[0027] The base 1, the stretching frame 9 and the cross frame 7 are made of corrosion-resistant alloys such as stainless steel, which have good mechanical properties and excellent corrosion resistance, and are helpful to a test equipment for testing workpieces with non-parallel pressure receiving surfaces to adapt to various harsh environments.

[0028] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4In some embodiments, the ball head 15 is arranged at one end of the connecting member 11 away from the connecting disc 5, and the connecting member 11 is screwed to the connecting disc 5. The ball head 15 is integrally formed with the connecting member 11. The outer side of the connecting member 11 is provided with external threads. The connecting disc 5 can be provided with a plurality of connecting through holes for connecting the connecting member 11. The connecting through holes can be provided with internal threads matched with the external threads of the connecting member 11. By screwing the connecting member 11, the length of the connecting member 11 extending out of the connecting disc 5 can be changed. By adjusting the length of the connecting member 11 extending out of the connecting disc 5 one by one, the angle of the movable pressure plate 4 relative to the connecting disc 5 can be changed. The joint sleeve 16 is provided with a first spherical surface 19 matched with the ball head 15. The connecting disc 5 is provided with a plurality of connecting holes for screwing the joint sleeve 16. The joint sleeve 16 is provided with external threads, and the connecting holes are provided with internal threads matched with the joint sleeve 16. The joint sleeve 16 is sleeved on the connecting member 11 from the other end of the connecting member 11 provided with the ball head 15, and the first spherical surface 19 abuts against the ball head 15. The protrusion 18 is arranged on the movable pressure plate 4 and located in the connecting hole. The protrusion 18 is provided with a second spherical surface 17 matched with the ball head 15. By screwing the joint sleeve 16 into the connecting hole, the ball head 15 is driven to abut against the second spherical surface 17 on the protrusion 18, so that the connecting member 11 can be deflected relative to the movable pressure plate 4 and can be rotated relative to the connecting member 11. During the deflection or rotation, the connecting member 11 always abuts against the ball head 15, thereby ensuring the stability of the angle of the movable pressure plate 4.

[0029] In the present embodiment, the diameter of the minimum part of the first spherical surface 19 is greater than the diameter of the connecting part of the ball head 15 and the connecting member 11, and greater than the diameter of the connecting member 11, so that when the connecting member 11 is deflected relative to the movable pressure plate 4, the joint sleeve 16 does not interfere with the connecting member 11. In order to reduce the processing difficulty of the movable pressure plate 4, the connecting hole can be a through hole, the protrusion 18 is screwed into the connecting hole, the second spherical surface 17 is arranged on the protrusion 18, and the protrusion 18 is further provided with a limiting part limiting the depth of the protrusion 18 screwed into the connecting hole. Of course, the protrusion 18 can also be integrally formed with the movable pressure plate 4, which is not limited here.

[0030] Preferably, the connecting member 11 is provided with an identifier for displaying the length of the connecting member 11 extending out of the movable pressure plate 4.

[0031] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4In some embodiments, the first locking nut 12 is located on one side of the connecting disc 5 and abuts against the connecting disc 5, and the connecting piece 11 is screwed with the first locking nut 12. The position of the connecting piece 11 is prevented from being locked by the friction force between the first locking nut 12 and the connecting disc 5. The second locking nut 14 is located on the other side of the connecting disc 5 and abuts against the connecting disc 5, and the connecting piece 11 is screwed with the second locking nut 14. The position of the connecting piece 11 is prevented from being locked by the friction force between the second locking nut 14 and the connecting disc 5. Specifically, since the connecting piece 11 is screwed with the connecting disc 5, the thread may be loose during the static pressure process, thereby causing the relative position of the connecting piece 11 and the connecting disc 5 to change. By arranging the first locking nut 12 and the second locking nut 14 and abutting the first locking nut 12 and the second locking nut 14 against the connecting disc 5, the position of the connecting piece 11 can be locked by the first locking nut 12 and the second locking nut 14 after the position of the connecting piece 11 is adjusted.

[0032] In the present embodiment, the connecting through hole can also not be provided with an internal thread, and the position of the connecting piece 11 relative to the connecting disc 5 can be fixed by the first locking nut 12 and the second locking nut 14. Of course, the connecting through hole can also be provided with an internal thread matched with the external thread of the connecting piece 11, which is not specifically limited herein.

[0033] Referring to Figure 2 In some embodiments, a plurality of friction grooves 10 are arranged at intervals on the side of the movable pressure disc 4 facing the test workpiece 3 and the side of the fixed pressure disc 2 facing the test workpiece 3. The friction grooves 10 are used to increase the friction force between the pressure surface of the test workpiece 3 and the movable pressure disc 4 and the fixed pressure disc 2, so as to prevent the test workpiece 3 from moving during the static pressure test. The friction grooves 10 are preferably a plurality of concentric circular grooves.

[0034] Referring to Figure 1 and Figure 2 In some embodiments, a first connecting hole is arranged on the fixed pressure disc 2, and the fixed pressure disc 2 is connected to the base 1 through the first connecting hole. The first connecting hole is a threaded hole, and the fixed pressure disc 2 is mounted on the base 1 through the first connecting hole and a fastener. The fastener is preferably a screw.

[0035] Referring to Figure 1 and Figure 2In some embodiments, the second connecting hole 13 is provided on the connecting disc 5, and the static pressure drive 8 is connected to the connecting disc 5 through the second connecting hole 13. The second connecting hole 13 is a threaded hole, the output end 6 of the static pressure drive 8 is provided with external threads, and the output end 6 of the static pressure drive 8 is screwed into the second connecting hole 13 to achieve the connection between the output end 6 of the static pressure drive 8 and the connecting disc 5. Preferably, a third locking nut is further provided on the output end 6 of the static pressure drive 8, and the third locking nut abuts against the connecting disc 5.

[0036] The above description is only some or preferred embodiments of the present application, and neither the text nor the drawings can limit the scope of protection of the present application. Any equivalent structural transformation using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the scope of protection of the present application.

Claims

1. A testing apparatus for testing non-parallelism of a pressure receiving surface of a workpiece, characterized by, The utility model relates to a static pressure testing device, including: Base (1); A pair of stretch frame (9), same pair's two the stretch frame (9) are arranged in the base (1); Cross frame (7), the cross frame (7) is arranged between same pair's two the stretch frame (9); Static pressure drive (8), the static pressure drive (8) is arranged in the cross frame (7); Fixed pressure plate (2), the fixed pressure plate (2) is arranged in the base (1), and the fixed pressure plate (2) is used for placing test workpiece (3); Connecting disc (5), the connecting disc (5) is arranged in the static pressure drive (8); Multiple connecting pieces (11) are arranged at intervals in the connecting disc (5), and the connecting piece (11) can move relative to the connecting disc (5); Movable pressure plate (4), multiple the connecting piece (11) rotatably connects the movable pressure plate (4).

2. The testing apparatus for testing non-parallelism of a pressure receiving surface of a workpiece according to claim 1, wherein Further including: Ball head (15), the connecting piece (11) is provided with ball head (15) at one end away from the connecting disc (5), and the connecting piece (11) is screwed with the connecting disc (5); Joint screw sleeve (16), the first spherical surface (19) is arranged in the joint screw sleeve (16), the first spherical surface (19) is adapted to the ball head (15), the connecting disc (5) is provided with multiple connecting holes, and the connecting hole is screwed with the joint screw sleeve (16); The convex (18) is arranged in the movable pressure plate (4) and is located in the connecting hole, and the convex (18) is provided with the second spherical surface (17) adapted to the ball head (15).

3. The testing apparatus for testing non-parallelism of a pressure receiving surface of a workpiece according to claim 2, wherein Further including: First locking nut (12), the first locking nut (12) is located on one side of the connecting disc (5) and abuts the connecting disc (5), and the first locking nut (12) is screwed with the connecting piece (11); Second locking nut (14), the second locking nut (14) is located on the other side of the connecting disc (5) and abuts the connecting disc (5), and the first locking nut (12) is screwed with the connecting piece (11).

4. The testing apparatus for testing non-parallelism of a pressure receiving surface of a workpiece according to claim 1, wherein Further including: Multiple friction grooves (10), multiple the friction grooves (10) are arranged at intervals on the side of the movable pressure plate (4) towards the test workpiece (3) and the side of the fixed pressure plate (2) towards the test workpiece (3).

5. The testing apparatus for testing non-parallelism of a pressure receiving surface of a workpiece according to claim 1, wherein Further including: First connecting hole, the first connecting hole is arranged in the fixed pressure plate (2), and the fixed pressure plate (2) is connected with the base (1) through the first connecting hole.

6. The testing apparatus for testing non-parallelism of a pressure receiving surface of a workpiece according to claim 1, wherein Further including: Second connecting hole (13), the second connecting hole (13) is arranged in the connecting disc (5), and the connecting disc (5) is connected with the static pressure drive (8) through the second connecting hole (13).

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