Tool capable of detecting tensile strength of part

Abstract

The utility model relates to the technical field of aerospace part detection, and particularly discloses a tool capable of detecting the tensile strength of a part, the tool comprises a clamping block, a fixed base and a mounting sleeve, the clamping block and the fixed base are detachably fixed, and the upper end of the clamping block is provided with a tooth-shaped structure matched with a thread of a resistance groove part of the part; the lower end of the installation sleeve is provided with a through hole for a rod part of a part to penetrate through. The purpose of the utility model is to solve the problem that the real tensile strength value cannot be measured due to the fracture of the clamped part of a part because the pressure of the clamping block of the detection tool on the part is too large because the conventional tensile strength detection tool is not suitable for the tensile strength detection of the small-diameter part.

Description

Technical Field

[0001] This utility model relates to the field of aerospace component testing equipment technology, and in particular to a tooling that can detect the tensile strength of a component. Background Technology

[0002] In modern industrial manufacturing, the usage scenarios and installation locations of parts directly determine their service performance requirements. Among these, tensile strength, as a key mechanical indicator, plays a decisive role in the reliability and service life of parts. Different industries have significantly different requirements for the tensile strength of parts. For example, load-bearing components in the construction industry need stable tensile properties to withstand external impacts, while automotive engine parts need to maintain high strength characteristics under high-temperature and high-stress conditions. In the aerospace field, due to the extreme application environment and high-risk missions, parts must not only withstand severe mechanical loads but also maintain high-precision operation under complex conditions. Therefore, the requirements for tensile strength and manufacturing precision are even more stringent.

[0003] In the tensile strength testing of parts, the selection of measuring equipment and tooling is crucial, as their compatibility directly affects the accuracy and reliability of the test results. For example... Figure 1 As shown, taking a titanium alloy blind rivet shank as an example, the product for which tensile force needs to be measured is a single part. This part can be directly measured after heat treatment. The main location for measuring tensile force is the tensile groove of the part. Because the resistance groove is used for connection and fastening when the titanium alloy blind rivet shank is assembled into a product, and this resistance groove also needs to withstand tensile force. Existing clamping devices such as... Figure 2 As shown, the clamping part is equipped with barbs to facilitate clamping the part. However, commonly used clamping blocks are mainly used for measuring parts with a diameter of 10mm and above. Therefore, the barbs do not exert excessive pressure on the clamping part of the part during the measurement process, which would cause the part to break from the clamping part. However, the diameter of this part is usually 2.0-2.8mm, which is too small. Using the barbs of the existing clamping block would exert excessive pressure on the part. During the tensile test, most of the part would break at the resistance groove, making it impossible to measure the tensile breaking force value of the part at the breakage groove. Utility Model Content

[0004] To address the shortcomings of existing technologies, the present invention provides a tooling that can detect the tensile strength of parts. This solves the problem that existing tensile strength detection tooling is not suitable for detecting the tensile strength of small-diameter parts, causing the parts to break at the clamped part due to excessive pressure from the clamping block of the detection tooling, thus making it impossible to measure the true tensile strength value.

[0005] To solve the above problems, the technical solution adopted by this utility model is: a tooling that can detect the tensile strength of a part, including a clamping block, a fixed base and a mounting sleeve. The clamping block and the fixed base are detachably fixed. The upper end of the clamping block is provided with a toothed structure that engages with the resistance groove of the part. The lower end of the mounting sleeve has a through hole through which the rod of the part can pass.

[0006] The technical principle and beneficial effects of this solution are as follows: By replacing the existing barbed structure with a toothed structure on the clamping block that engages with the resistance groove of the part, the toothed structure can fit snugly against the resistance groove during clamping, increasing the contact area. This prevents excessive pressure on the resistance groove during clamping, thus avoiding breakage during tensile testing. The clamping block and the fixed base are detachably connected. For testing parts of different lengths, clamping blocks with toothed structures of different lengths can be replaced, making it applicable to testing a wider range of parts of varying lengths, thus broadening its applicability.

[0007] Furthermore, the mounting sleeve is also equipped with a pad coaxial with the mounting sleeve, and the pad has a through hole in the middle. By using the pad inside the sleeve, the length of the rod extending outside the sleeve can be adjusted, and pads of different heights can be replaced to adapt to parts of different lengths, thereby improving the applicability of this testing device.

[0008] Furthermore, the clamping block includes a clamping head and a clamping rod. The toothed structure is located at the clamping head, and the clamping rod is detachably connected to the fixed base. The thickness of the clamping head is greater than the thickness of the clamping rod. The toothed structure at the clamping head ensures stable clamping of the part, while the thickened design creates a locally reinforced area, effectively preventing surface damage and slippage of the part caused by uneven pressure. The clamping rod, on the other hand, adopts a thinner design and is detachably connected to the fixed base. This optimizes material distribution and improves material utilization efficiency while ensuring structural rigidity.

[0009] Furthermore, the upper part of the mounting sleeve is provided with a convex ring. The convex ring facilitates the connection between the mounting sleeve and the testing machine that provides tensile force, and allows the testing machine to pull the mounting sleeve to move by limiting the movement of the convex ring.

[0010] Furthermore, the convex ring and the sleeve body are integrally formed. This integrated design fundamentally eliminates the connection interface of traditional split structures, avoiding gaps, stress concentration points, and joint defects caused by welding, riveting, or mechanical assembly, thus making the convex ring and the sleeve body form a homogeneous mechanical load-bearing whole.

[0011] Furthermore, the length of the toothed structure is 50-100 mm. Within this range, it is applicable to the testing of the tensile strength of parts of most lengths. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the part to be inspected.

[0013] Figure 2 This is a schematic diagram of the clamping block of an existing tensile strength testing fixture.

[0014] Figure 3 This is a schematic diagram of the tensile strength testing fixture of this utility model.

[0015] Figure 4 This is a top view of the clamping block.

[0016] Figure 5 This is a side view of the clamping block.

[0017] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0018] Figure 7 This is a schematic diagram of the sleeve.

[0019] Figure 8 This is a schematic diagram of the pad block. Detailed Implementation

[0020] The following detailed description illustrates the specific implementation method:

[0021] The reference numerals in the accompanying drawings include: part 1, resistance groove 11, breakage groove 12, fixed base 2, clamping block 3, clamping head 31, clamping rod 32, toothed structure 33, mounting sleeve 4, and pad 5.

[0022] The basics are as follows: Figure 3-8 As shown: A tooling for detecting the tensile strength of part 1 includes a clamping block 3, a fixed base 2, and a mounting sleeve 4. The clamping block 3 and the fixed base 2 are detachably fixed by bolts. The upper end of the clamping block 3 is provided with a toothed structure 33 that engages with the resistance groove 11 of part 1. The lower end of the mounting sleeve 4 has a through hole through which the rod of part 1 can pass. The length of the toothed structure 33 is 50-100mm, and in this embodiment it is 70mm.

[0023] Two clamping blocks 3 are symmetrically arranged. Each clamping block 3 includes a clamping head 31 and a clamping rod 32. A toothed structure 33 is provided at the clamping head 31. The clamping rod 32 is detachably connected to the fixed base 2. The thickness of the clamping head 31 is greater than the thickness of the clamping rod 32. The toothed structure 33 at the clamping head 31 provides a stable clamping of the part 1. At the same time, the thickened design forms a localized reinforcement area, effectively preventing surface damage and slippage of the part 1 caused by uneven pressure. The clamping rod 32 adopts a thinner design and is detachably connected to the fixed base 2. While ensuring structural rigidity, it rationally optimizes material distribution and improves material utilization efficiency.

[0024] The upper part of the mounting sleeve 4 is provided with a convex ring, which is integrally formed with the sleeve body. Inside the mounting sleeve 4, there is also a pad 5 coaxial with the mounting sleeve 4, and the pad 5 has a through hole in the middle. By using the pad 5 set inside the sleeve, the length of the rod of the part 1 extending outside the sleeve can be adjusted. In addition, pads 5 of different heights can be replaced according to different lengths of parts 1 for adaptation, so that the tensile fracture groove 12 of the part is exposed, thereby improving the applicability of this detection device.

[0025] In use, part 1 is passed through the through hole of pad 5 and mounting sleeve 4 and extends out of the sleeve; then the fixed base 2 is connected to the machine tool caliper part, and the distance between the two clamping blocks 3 is adjusted by adjusting the caliper distance, so that the clamping blocks 3 clamp the resistance groove 11 part of part 1; then the mounting sleeve 4 is connected to the testing machine, and the testing machine is started to test the tensile strength of part 1.

[0026] By replacing the existing barbed structure with a toothed structure 33 on the clamping block 3 that engages with the resistance groove 11 of the part 1 through a threaded connection, the toothed structure 33 can fit snugly against the resistance groove 11 of the part 1 during clamping, increasing the contact area. This prevents excessive pressure on the resistance groove 11 of the part 1 during clamping, thus avoiding breakage during the tensile strength test. The clamping block 3 and the fixed base 2 are detachably connected. For testing parts 1 of different lengths, clamping blocks 3 with toothed structures 33 of different lengths can be used, making it applicable to testing more parts 1 of different lengths and thus broadening its applicability.

[0027] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A tooling for detecting the tensile strength of a part, characterized in that: It includes a clamping block, a fixed base, and a mounting sleeve. The clamping block and the fixed base are detachably fixed. The upper end of the clamping block is provided with a toothed structure that engages with the resistance groove of the part. The lower end of the mounting sleeve has a through hole through which the rod of the part can pass.

2. The tooling for detecting the tensile strength of a part according to claim 1, characterized in that: The mounting sleeve is also provided with a pad that is coaxial with the mounting sleeve, and the pad has a through hole in the middle.

3. The tooling for detecting the tensile strength of a part according to claim 1, characterized in that: The clamping block includes a clamping head and a clamping rod. The toothed structure is located at the clamping head. The clamping rod is detachably connected to the fixed base. The thickness of the clamping head is greater than the thickness of the clamping rod.

4. The tooling for detecting the tensile strength of a part according to claim 1, characterized in that: The mounting sleeve has a raised ring on its upper part.

5. The tooling for detecting the tensile strength of a part according to claim 4, characterized in that: The convex ring is integrally formed with the sleeve body.

6. A tooling for detecting the tensile strength of a part according to claim 1 or 3, characterized in that: The length of the tooth-shaped structure is 50-100mm.

Images