Tool for extracting axial performance sample
By designing a tool for picking axial performance samples for boring machines, the forging sampling process is complicated and costly, and an efficient and low-cost sampling process is achieved.
Patent Information
- Application Number
- CN202420905981.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-04-28
AI Technical Summary
The prior art has cumbersome sampling process in the production of forgings and low production efficiency. The weight of forgings needs to be increased during secondary sampling, resulting in an increase in cost.
A tool for picking axial performance sample is designed, including a first connecting rod, a second connecting rod, a nesting drill bit, a cutting tool and a cutting tool. The number of clamping and sampling of forgings is performed through the boring machine to reduce the number of clamping times of forgings and do not increase the weight of forgings during secondary sampling.
Simplified sampling steps, improved production efficiency, reduced forging weight and production costs, and avoided crack problems during secondary heat treatment.
Smart Images
Figure CN222643319U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical processing equipment, in particular to a set-taking tool for axial performance samples. Background Art
[0002] In order to ensure that the forging products meet the design and use requirements, it is necessary to conduct quality inspection on forgings (blanks, semi-finished products or finished products), and it is necessary to take samples from the forgings for testing. Generally, the cross-sectional diameter of shaft forgings is greater than 0.5m, which can be called large shaft forgings. In the production of such forging products, the forging body is basically extended strip samples, that is, the extended part of the product body is used as the sample.
[0003] Generally, forgings are cut with sawing machines to prepare samples. That is, after the first heat treatment, large samples are cut in the axial and radial directions with a vertical saw, and then they are cut into small samples. Finally, the mechanical properties and hardness of the samples are tested by the corresponding testing equipment of the quality assurance department to know whether the performance of the forging products is qualified. However, when the vertical saw cuts large samples in the axial and radial directions and then changes them into small samples, the process involves three clamping of the forging products to allow the vertical saw to prepare large samples from different directions and divide the large samples into small samples. This process is cumbersome and has low production efficiency.
[0004] Secondly, when the sample is found to be unqualified, it is necessary to make another sample. In order to make the sample better, the forging product must be subjected to a second heat treatment. However, during the second heat treatment, due to the use of vertical sawing, the incision is large and the cut surface is uneven, so the sharp corners of the saw cut will cause cracks during the heat treatment, causing the forging product to be scrapped. In order to prevent the aforementioned cracks during the secondary heat treatment, it is usually necessary to directly make double samples for the forging product. However, when making double samples, it is equivalent to lengthening the forging body with double samples, that is, the extended part of the product body, which originally only needed to carry a single sample, needs to carry a double sample, which will increase the weight of the forging and increase the cost. Utility Model Content
[0005] In order to improve production efficiency, an embodiment of the utility model provides a set of cutting tools for axial performance test specimens.
[0006] The embodiment of the utility model adopts the following technical solution: installed on the machining equipment, including:
[0007] A first connecting rod, one end of which is threadedly connected to the machining equipment, and the other end of which is threadedly connected to a trepanning drill bit, and is provided with a first through hole, the length of which is not less than 200 mm;
[0008] A second connecting rod has one end threadedly connected to the machining equipment, and the other end threadedly connected to one end of a cutting head, and is provided with a second through hole, the length of the second through hole is not less than 200 mm; the cutting tool is plug-in connected to the other end of the cutting head, and there are no more than two cutting tools; wherein, a third through hole matching the first through hole is provided on the casing drill bit; and a fourth through hole matching the second through hole is provided on the cutting head.
[0009] Beneficial effects: Compared with the prior art, the forging product only needs to be clamped once, and then the first connecting rod and the second connecting rod are clamped on the boring machine for sampling. There is no need to clamp the forging product multiple times, the steps are simple, and the production efficiency is improved. Secondly, when performing secondary sampling, it is only necessary to find other unsampled areas on the cross section of the forging for relevant sampling, without increasing the weight of the forging product, and reducing production costs.
[0010] Preferably, two cutting tools are included, one cutting tool is plug-in connected to the upper end of the cutting tool head, and the other cutting tool is plug-in connected to the lower end of the cutting tool head.
[0011] Beneficial effect: By setting two cutting tools, the cutting rate can be accelerated and the production efficiency can be improved.
[0012] Preferably, the first through hole is arranged at the center of the first connecting rod, and the radius of the first through hole is 15 mm.
[0013] Beneficial effect: By setting the radius of the first through hole, the sample can be wrapped inside by the first connecting rod and the trepanning drill bit during trepanning. At the same time, according to relevant regulations and requirements, the diameter of the sample is 30 mm and the length is not less than 200 mm, so the radius of the first through hole is 15 mm and the length is not less than 200 mm, which can just wrap the sample.
[0014] Preferably, the length of the third through hole is not less than 55 mm.
[0015] Beneficial effect: ensuring that the trepanning drill bit is long enough and can be threadedly connected to the first connecting rod.
[0016] Preferably, the fourth through hole is arranged at the center of the cutting tool, and the radius of the fourth through hole is 15 mm.
[0017] Beneficial effect: The radius of the fourth through hole is set just enough to wrap the sample.
[0018] Preferably, the back of the cutting tool is in an arc shape with a radius of 15 mm.
[0019] Beneficial effect: The cutting tool is used for cutting and sampling. Since the size of the cutting tool must not only meet the requirements of penetrating into the hollow interlayer between the forging and the sample, but also be able to pass through the slow entry of the machining equipment, the back of the cutting tool is pushed by the forging body, that is, the cutting tool is pushed, so that the root radius of the sample is gradually reduced until the sample is disconnected from the forging body. By setting the size of the cutting tool, the sample can be cut more accurately, and the cutting tool will not touch the surface of the front part of the cutting sample during the slow entry process.
[0020] Preferably, the machining equipment is a boring machine.
[0021] Beneficial effects: The boring machine is easy to operate, has high production efficiency, and can process large, heavy, and complex workpieces with high flexibility.
[0022] Beneficial effects of the utility model
[0023] Compared with the prior art, when a vertical saw is used to cut a forging for sampling, it is necessary to clamp the forging product three times before sampling, which is cumbersome and has low production efficiency. At the same time, when a second sampling is performed, due to the use of a vertical saw for sampling, the forging body can only be extended with double specimens during forging production, which will increase the volume and weight of the forging, resulting in an increase in production costs.
[0024] Firstly, the utility model only needs to clamp the forging product once, and then the first connecting rod and the second connecting rod are clamped on the boring machine in batches for sampling. There is no need to clamp the forging product multiple times, the steps are simple, and the production efficiency is improved.
[0025] Secondly, when conducting secondary sampling, it is only necessary to find other unsampled areas on the cross section of the forging for relevant sampling. That is to say, the forging product does not need to carry double specimens, does not need to increase the weight of the forging product, and reduces production costs.
[0026] At the same time, the cut surface produced after the cutter is sampled is small and smooth, which prevents the forging product from being scrapped due to cracking of the cut surface during the secondary heat treatment process.
[0027] Next, by setting the first through hole, the second through hole, the third through hole and the fourth through hole on the sleeve tool for the axial performance specimen, it can be ensured that when sampling, the sample is wrapped inside the sleeve tool, so as to fully protect the sample, and when the tool is retracted after sampling, the sample can be taken out at the same time. This integrated sleeve, sampling and one-time sample taking out improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 This is a schematic structural diagram of a first connecting rod according to Embodiment 1 of the present utility model;
[0029] Figure 2 This is a schematic structural diagram of a core drill bit according to Embodiment 1 of the present utility model;
[0030] Figure 3 This is a schematic structural diagram of a cutting blade head according to Embodiment 1 of the present utility model;
[0031] Figure 4 This is a schematic diagram of the structure of a cutting tool according to Embodiment 1 of the present utility model;
[0032] Figure 5 It is a structural schematic diagram of the cross section of the forging of Example 1 of the utility model. DETAILED DESCRIPTION
[0033] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or the directions or positional relationships in which the utility model product is usually placed when in use, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. The dimensions of the structural schematics in the accompanying drawings are not necessarily proportional.
[0034] The reference numerals in the drawings of the specification include:
[0035] First through hole 11, first external thread 12, second external thread 13, third through hole 21, first internal thread 22, fourth through hole 31, second internal thread 32, forging 4, blank ring 5, test rod 6
[0036] Embodiment 1
[0037] This embodiment 1 provides a trepanning tool for axial performance samples, which is connected to a boring machine by threads and is used to sample from the axial end surface of a forging 4, and the sample is a test rod 6. The trepanning tool includes a first connecting rod, a second connecting rod, a trepanning drill bit, a cutting head, and a cutting tool.
[0038] In this embodiment, the first connecting rod and the second connecting rod have the same structure and size. Since the boring machine can only be connected to one connecting rod, after the first connecting rod and the trepanning drill are used for trepanning, they are removed from the boring machine and replaced with the second connecting rod, the cutting head and the cutting tool to cut the test rod 6 and trepan it out. At the same time, since the second connecting rod has the same structure as the first connecting rod, it can be Figure 1 It is also regarded as a structural schematic diagram of the second connecting rod.
[0039] Specifically, Figure 1As shown, the center of the first connecting rod is provided with a first through hole 11 with a diameter of b=30 mm, and in this embodiment, the length of the first through hole 11 is a=200 mm. The right end surface of the first connecting rod is provided with a first external thread 12, and the first connecting rod is threadedly connected to the boring machine through the first external thread 12; the left end surface of the first connecting rod is provided with a second external thread 13.
[0040] like Figure 2 As shown, a third through hole 21 with a diameter of b = 30 mm is provided at the center of the trepanning drill bit. In the present embodiment, the length of the third through hole 21 is c = 55 mm. A first internal thread 22 is provided inside the right end of the trepanning drill bit, i.e., on the third through hole 21. The first internal thread 22 matches the second external thread 13. The trepanning drill bit is matched and connected with the second external thread 13 of the first connecting rod through the first internal thread 22.
[0041] By providing the first through hole 11, the second through hole, the third through hole 21 and the fourth through hole 31, not only can the test rod 6 be ensured to be located inside the through hole to protect the test rod 6, but also when the root of the test rod 6 is cut off, the test rod 6 will automatically fall into the second through hole, and the test rod 6 can be directly taken out by withdrawing the second connecting rod.
[0042] One end of the second connecting rod passes through an external thread on the surface and can be matched and connected with the boring machine through the thread.
[0043] like Figure 3 As shown, the center of the cutting head is provided with a fourth through hole 31 with a diameter of b=30 mm, and the length of the fourth through hole 31 is d, which is about half of b. The right end of the cutting head, that is, the surface of the third through hole 21, is provided with a second internal thread 32, and the cutting head is matched and connected with the external thread on the other end surface of the second connecting rod through the second internal thread 32.
[0044] like Figure 4 As shown, the back of the cutting tool is in the shape of an arc with a radius of e=15 mm. Figure 4 The right end of the cutting tool Figure 3 The left end of the middle cutting head is plug-in connected.
[0045] Specifically, Figure 3 The upper left end and the lower left end of the cutting blade are provided with Figure 4 The mounting groove that matches the right end of the cutting tool shown in the figure has a thickness equal to the thickness of the right end of the cutting tool. The mounting groove enables the right end of the cutting tool to match and connect with the left end of the cutting head, and the connection is a plug-in connection. The depth of the mounting groove is about 0.05 mm, which can be used for plugging and unplugging the cutting tool. At the same time, in this embodiment, in order to speed up the cutting speed, two identical mounting grooves are respectively provided at the upper left end and the lower left end of the cutting head, so that the two cutting tools can be plugged and unplugged with the upper left end and the lower left end of the cutting head respectively.
[0046] The specific use process of this embodiment is as follows:
[0047] One end of the first connecting rod is connected to the boring machine, and the other end is connected to the trepanning drill bit. A certain position of the cross section of the forging 4 is determined according to requirements or randomly, and then the trepanning drill bit is driven by the boring machine to perform trepanning. Generally, in order to ensure that the outer surface of the test rod 6 is intact, the diameter or length of the test rod 6 is not greater than the first through hole 11 or the second through hole. The trepanning drill bit connected to the first connecting rod will drill out a test rod 6 with a length of not less than 200mm and a diameter of 30mm as required, and then withdraw the trepanning drill bit; at this time, the test rod 6 is still integrated with the forging 4, such as Figure 5 As shown, a blank ring 5 is formed on the axial end surface of the forging 4 , and the blank ring 5 is located between the forging 4 and the test rod 6 .
[0048] Remove the first connecting rod from the boring machine, and then install one end of the second connecting rod on the boring machine, the other end of the second connecting rod is connected to one end of the cutting head, and the other end of the cutting head is connected to the cutting tool. Move the cutting head along the blank ring 5 into the forging body, and send the cutting head to the target position, which is the connection between the test rod 6 and the forging 4, and then gradually cut the connection by rotating the cutting tool along the radial direction of the cutting head. The radius of the connection gradually decreases until it is 0, that is, the root of the test rod 6 is disconnected from the forging 4, and then the test rod 6 can be taken out while withdrawing the cutting tool. When the test rod is found to be unqualified after testing during the first preparation, secondary sampling is required. Sampling can be directly performed on the cross section of the forging 4. A certain position of the cross section can be re-determined. Only a single sample is required, and no double samples are required. There is no need to increase the weight of the forging product, thereby reducing production costs.
[0049] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0050] It should be understood that the term "and / or" used in this article is only a description of the same field of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.
[0051] It should be noted that, regarding other parts not mentioned, the parts include specific devices and implementation methods, please refer to the aforementioned method embodiment part, and no further details will be given here.
[0052] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.
[0053] The above is only an embodiment of the utility model. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.
Claims
1. A cutting tool for collecting axial performance samples, characterized in that: Installed on machining equipment, including: A first connecting rod, one end of which is threadedly connected to the machining equipment, and the other end of which is threadedly connected to a trepanning drill bit, and is provided with a first through hole, the length of which is not less than 200 mm; A second connecting rod, one end of which is threadedly connected to the machining equipment, and the other end of which is threadedly connected to one end of the cutting blade, and is provided with a second through hole, the length of which is not less than 200 mm; The cutting tool is pluggably connected to the other end of the cutting tool head, and there are no more than two cutting tools; Wherein, the casing drill bit is provided with a third through hole matching the first through hole; and the cutting tool head is provided with a fourth through hole matching the second through hole.
2. The axial performance test specimen set cutting tool according to claim 1, characterized in that: The utility model comprises two cutting tools, one of which is connected with the upper end of the cutting tool head by plugging and pulling, and the other of which is connected with the lower end of the cutting tool head by plugging and pulling.
3. The axial performance test specimen set cutting tool according to claim 1, characterized in that: The first through hole is located at the center of the first connecting rod, and the radius of the first through hole is 15 mm.
4. The axial performance test specimen setter according to claim 1, characterized in that: The length of the third through hole is not less than 55 mm.
5. The axial performance test specimen set cutting tool according to claim 1, characterized in that: The fourth through hole is located at the center of the cutting tool, and the radius of the fourth through hole is 15 mm.
6. The axial performance test specimen set cutting tool according to claim 1, characterized in that: The back of the cutting tool is in the shape of an arc with a radius of 15 mm.
7. The axial performance test specimen set cutting tool according to claim 1, characterized in that: The machining equipment is a boring machine.