Weld durability test device for aluminum alloy subframe

Abstract

A kind of welding seam endurance test device for aluminum alloy subframe, including actuator, still including multiple pedestals, welding seam clamp, each pedestal is fixed to ground, and respectively with each body mounting support of subframe fixed connection, the welding seam clamp includes clamping part, connecting portion, the clamping part is provided with clamping groove, the shape of the clamping groove is same with the cross-sectional shape at the welding seam of subframe, and the groove depth of clamping groove is same with the cross-sectional height at the welding seam of subframe, the connecting portion is fixedly installed in the notch of clamping part, the clamping part is fixedly connected with actuator by connecting portion, so that actuator can drive subframe to reciprocate by welding seam clamp, it is easy to operate, and the welding seam durability of subframe can be accurately tested.

Description

TECHNICAL FIELD

[0001] The present application relates to a test device, in particular to a welding seam durability test device for an aluminum alloy subframe. BACKGROUND

[0002] In order to realize the light weight of the automobile, the aluminum alloy subframe has been widely applied. The main body of the commonly used aluminum alloy subframe is generally welded, so there are many welding seams, and the cracking of the welding seam becomes the main reason for the durability failure of the aluminum alloy subframe, which directly affects the quality and service life of the aluminum alloy subframe. At present, the mounting center position of the tire is forced after all the accessories on the aluminum alloy subframe are assembled to form a complete subframe assembly, and the welding seam cracks. This detection method needs to be carried out after all the accessories are installed, and the operation steps are more, the detection efficiency is low, and the force needs to be applied to the mounting center of the tire, which is easy to cause uneven stress of each welding seam, and cannot accurately detect the durability of each welding seam. SUMMARY

[0003] The purpose of the present application is to overcome the shortcomings of the prior art, and to provide a welding seam durability test device for an aluminum alloy subframe, which is simple to operate and can accurately test the welding seam durability of the subframe.

[0004] The technical scheme of the present application is: a welding seam durability test device for an aluminum alloy subframe, comprising an actuator, further comprising a plurality of bases, a welding seam clamp, each base is fixed to the ground and is fixedly connected with each body mounting bracket of the subframe, the welding seam clamp comprises a clamping part and a connecting part, the clamping part is provided with a clamping groove, the shape of the clamping groove is the same as the cross-sectional shape of the welding seam of the subframe, and the groove depth of the clamping groove is the same as the cross-sectional height of the welding seam of the subframe, the connecting part is fixedly installed in the slot of the clamping part, and the clamping part is fixedly connected with the actuator through the connecting part, so that the actuator can drive the subframe to move reciprocally through the welding seam clamp.

[0005] Further, the clamping part is provided with two clamping arms, the upper segments of the two clamping arms are parallel, and the lower segment of one of the clamping arms is inclined to the other clamping arm, so that a clamping groove with a wide upper part and a narrow lower part is formed between the two clamping arms.

[0006] Further, the end of each of the two clamping arms is provided with a threaded hole, and a bolt is screwed through the threaded hole and connected with the connecting part.

[0007] Further, the width of the clamping part is 20-30mm.

[0008] Further, the connecting part comprises a connecting block and a stud, the connecting block is provided with a mounting hole corresponding to the clamping part, and the stud is used for threaded connection with the actuator.

[0009] Further, the bottom base upper end is provided with a screw hole, which is connected and fixed with the body mounting support of the sub-frame through bolts, and the bottom base lower end is connected and fixed with the ground through bolts or fixed ground blocks.

[0010] The above technical scheme has the following advantages: in use, the sub-frame is fixed on the ground through the bottom base, the welding seam of the sub-frame is clamped by the clamping part of the welding clamp, the connecting part is fixed in the slot opening of the clamping slot, and the connecting part is fixed at the lower end of the actuator, so that the whole welding clamp clamps and wraps the welding seam, the actuator is started, the sub-frame is driven by the welding clamp through the actuator to make reciprocating motion, the reciprocating force of the actuator is applied to the welding seam of the sub-frame, until the welding seam appears cracks, and the test number of reciprocating motion is recorded. In the test process, the test device does not need to assemble other accessories of the sub-frame, can simplify the operation process, improve the test efficiency, save the test cost, and can test each welding seam specifically, so as to accurately test the durability of each welding seam, thereby improving the accuracy of the test result.

[0011] The application will be further described below in combination with the drawings and specific embodiments of the specification. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a schematic diagram of the assembly of the application and the sub-frame.

[0013] Fig. 2 It is a structural schematic diagram of the clamping part of the application.

[0014] Fig. 3 It is a front view of the clamping part of the application.

[0015] Fig. 4 It is a structural schematic diagram of the connecting part of the application. DETAILED DESCRIPTION

[0016] Reference Figs. 1 to 4The embodiment of the application is a kind of welding seam endurance test device for aluminum alloy subframe, including actuator 1, the actuator 1 of the embodiment adopts the actuator of SERVOTEST model 065-300-30, and further includes a plurality of bases 2, welding seam clamps.Each base 2 is fixed to the ground and is fixedly connected with each body mounting bracket of the subframe 3, the upper end of the base 2 is provided with a threaded hole, which is connected and fixed with the body mounting bracket of the subframe 3 by bolts, the base 2 is connected with the subframe 3 by using the structure of the subframe 3 itself, which is simple and convenient to operate, and will not damage the structure of the subframe itself, the lower end of the base 2 is connected and fixed with the ground by bolts or fixed ground blocks, which improves the connection reliability of the base 2 with the ground, prevents the subframe 3 from being pulled away from the ground during the test process, and ensures the smooth progress of the test.The welding seam clamp includes a clamping part 4 and a connecting part 5, the clamping part 4 is provided with a clamping groove 6, the shape of the clamping groove 6 is the same as the cross-sectional shape of the welding seam of the subframe, so that the inner wall of the clamping groove 6 can be in close contact with the welding seam, and the groove depth of the clamping groove 6 is the same as the cross-sectional height of the welding seam of the subframe, so that the clamping groove 6 can completely wrap the welding seam, and the connecting part 5 is fixedly installed in the slot of the clamping part 4, so that the welding seam clamp clamps the welding seam.In the embodiment, the clamping part 4 is provided with two clamping arms 7, the upper segments of the two clamping arms 7 are parallel, and the lower segment of one clamping arm 7 is inclined to the other clamping arm 7, so that the clamping groove 6 between the two clamping arms 7 is wide at the top and narrow at the bottom, the width of the clamping part 4 is 20-30 mm, so that the clamping part 4 can completely cover the welding seam, and the welding seam can be uniformly stressed during the test process, avoiding that the clamping part 4 is too wide to effectively apply force to the welding seam, or the clamping part 4 is too narrow to effectively cover the welding seam.The clamping part 4 is fixedly connected with the actuator 1 through the connecting part 5, so that the actuator 1 can drive the subframe 3 to move back and forth through the welding seam clamp.In the embodiment, the end of each clamping arm 7 is provided with a threaded hole 8, and the threaded hole 8 is threadedly connected with the connecting part 5 through bolts, the connecting part 5 includes a connecting block 9 and a stud 10, the connecting block 9 is provided with a mounting hole 11 corresponding to the clamping part 4, so that the connecting part 5 and the clamping part 4 are threadedly connected, which is simple to assemble and convenient to replace parts, and the stud 10 is used for threadedly connecting with the actuator 1.

[0017] In use, the test device sets the operating parameters such as tension and displacement of the actuator 1 in advance, fixes the sub-frame 3 to the ground by the base 2, clamps the weld of the sub-frame 3 by the clamping part 4 of the weld clamp, fixes the connecting part 5 to the slot of the clamping slot 6, fixes the connecting part 5 to the lower end of the actuator 1, and makes the whole weld clamp clamped around the weld. Then, the actuator 1 is started to drive the sub-frame 3 to reciprocate through the weld clamp, the force of the reciprocating actuator 1 is applied to the weld of the sub-frame, the test data is obtained through the force sensor on the actuator 1, and until the real-time operating data of the actuator 1 exceeds the set parameter range, it is indicated that the weld cracks, the test number of reciprocating motion is recorded, and the test is completed.

[0018] In the test process, the test device does not need to assemble other accessories of the sub-frame 3, can simplify the operation process, improve the test efficiency, save the test cost, and can test each weld in a targeted manner. The durability of each weld can be accurately tested, thereby improving the accuracy of the test results.

Claims

1. A weld endurance test device for an aluminum alloy subframe, comprising an actuator (1), characterized in that: Also include a plurality of base (2), weld fixture, each base (2) is fixed to the ground, and is respectively fixedly connected with each body mounting bracket of auxiliary frame (3), the weld fixture includes clamping part (4), connecting part (5), the width of the clamping part (4) is 20-30mm, the clamping part (4) is provided with clamping groove (6), the clamping part (4) is oppositely provided with two clamping arms (7), the upper segment of two clamping arms (7) is parallel, wherein the lower segment of one clamping arm is inclined to the other clamping arm, so that the clamping groove (6) is formed between two clamping arms (7) and is wide at the top and narrow at the bottom, the shape of the clamping groove (6) is same with the cross-sectional shape of the weld seam of auxiliary frame, and the groove depth of the clamping groove (6) is same with the cross-sectional height of the weld seam of auxiliary frame, the connecting part (5) is fixedly installed in the notch of the clamping part (4), the clamping part (4) is fixedly connected with actuator (1) through connecting part (5), so that actuator (1) can drive auxiliary frame (3) to reciprocate through the weld fixture.

2. The welded joint durability test apparatus for an aluminum alloy subframe according to claim 1, characterized by: The end of the two clamping arms (7) is respectively provided with threaded hole (8), and the threaded hole (8) is screwed with connecting part (5) through bolt.

3. The welded joint durability test apparatus for an aluminum alloy subframe according to claim 1, characterized by: The connecting part (5) includes connecting block (9), stud (10), the connecting block (9) is provided with mounting hole (11) corresponding to the clamping part (4), and the stud (10) is used for screwing with actuator (1).

4. The welded joint durability test apparatus for an aluminum alloy subframe according to claim 1, characterized by: The upper end of the base (2) is provided with screw hole, and is connected and fixed with the body mounting bracket of auxiliary frame (3) through bolt, the lower end of the base (2) is connected and fixed with the ground through bolt or fixed ground block.

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