A type of anti-deformation code iron

Abstract

This application discloses an anti-deformation weight block, comprising: a first limiting member including a first protrusion, a second protrusion, and fasteners; the first protrusion having a first through hole, the second protrusion having a second through hole, and two fasteners; a second limiting member including a telescopic member and a telescopic sleeve; the telescopic member being able to extend into and out of the telescopic sleeve; the first limiting member being able to span two adjacent counterweights of the crankshaft such that the two adjacent counterweights are located inside the first and second protrusions; the second limiting member being able to be inserted between the two adjacent counterweights of the crankshaft. The fasteners abut against the outer sides of the two adjacent counterweights on the crankshaft via the first and second protrusions of the first limiting member; the telescopic sleeve and the telescopic member are securely installed between the two adjacent counterweights and abut against the inner sides of the counterweights; the anti-deformation weight block abuts against the counterweights on both the inner and outer sides of the counterweights, and the first and second limiting members themselves are adjustable to accommodate crankshafts of different sizes and structures.

Description

Technical Field

[0001] This application relates to the field of crankshaft machining, and more particularly to an anti-deformation brace and its usage method. Background Technology

[0002] As a core component of an engine, the crankshaft's machining precision and quality directly affect the engine's overall performance, reliability, and service life. Ductile iron crankshafts, due to their excellent mechanical properties and cost advantages, are widely used in various types of engines.

[0003] In the final machining stage of the crankshaft, especially during the grinding of the main journals and connecting rod journals, the crankshaft is subjected to enormous machining stress, clamping stress, and thermal stress caused by frictional heat. Although ductile iron has good strength and toughness, under the combined stresses mentioned above, especially for crankshafts with slender structures and relatively weak rigidity, it is prone to bending or torsional deformation. This deformation will cause the roundness, cylindricity, coaxiality, and other dimensional and positional tolerances of the machined journals to exceed the tolerances, seriously affecting the machining accuracy and yield of the crankshaft. In the existing technology, in order to prevent crankshaft deformation during machining, the methods commonly used include optimizing machining parameters, designing complex special fixtures, or adding rigid supports to non-machined parts of the crankshaft. However, these methods are mostly highly specialized and lack versatility: traditional anti-deformation supports or braces are mostly fixed structures designed for a specific model of crankshaft and cannot be adapted to crankshaft products of different sizes and structures. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes an anti-deformation brace, which has strong flexibility and adaptability, and can be quickly adjusted and combined according to the size and structural characteristics of different crankshafts. It provides effective and reliable support for the crankshaft under various processing conditions, thereby suppressing crankshaft deformation and ensuring the processing accuracy and quality of the crankshaft.

[0005] According to an embodiment of this application, an anti-deformation weight is characterized by comprising: a first limiting member, including a first protrusion, a second protrusion, and fasteners, wherein the first protrusion has a first through hole, the second protrusion has a second through hole, and there are two fasteners; a second limiting member, including a telescopic member and a telescopic sleeve, wherein the telescopic member can extend into and out of the telescopic sleeve; wherein the first limiting member can span two adjacent counterweights of the crankshaft such that the two adjacent counterweights are located inside the first protrusion and the second protrusion, wherein one fastener passes through the first through hole and abuts against one of the counterweights inward, and the other fastener passes through the second through hole and abuts against the other counterweight inward; the second limiting member can be inserted between two adjacent counterweights of the crankshaft and abuts against the two counterweights outward.

[0006] According to one embodiment of this application, the first limiting member includes a connecting rod disposed along a first direction, and the first protrusion and the second protrusion are both located in a second direction of the connecting rod.

[0007] According to one embodiment of this application, the first direction is perpendicular to the second direction.

[0008] According to one embodiment of this application, a screw is formed on the fastener, and both the first through hole and the second through hole are provided with threads adapted to the fastener.

[0009] According to one embodiment of this application, the telescopic member is formed as a hexagonal bolt, and the telescopic sleeve is provided with threads that match the telescopic member.

[0010] According to one embodiment of this application, a second limiting end is provided on the telescopic sleeve, and the second limiting end is formed as a hexagonal prism.

[0011] According to one embodiment of this application, both the first through hole and the second through hole are disposed along a first direction.

[0012] According to one embodiment of this application, both the first limiting member and the second limiting member are made of Q235 steel.

[0013] According to one embodiment of this application, both the first protrusion and the second protrusion are welded to the connecting rod.

[0014] According to one embodiment of this application, both the first limiting member and the second limiting member are provided with reinforcing ribs along the first direction.

[0015] According to the embodiments of this application, the anti-deformation brace has at least the following beneficial effects: the fastener of the first limiting member abuts against the outer side of two adjacent counterweights on the crankshaft through the first protrusion and the second protrusion of the first limiting member; the telescopic sleeve and telescopic member of the second limiting member are fastened between the two adjacent counterweights and abut against the inner side of the counterweights; the anti-deformation brace abuts against the counterweights on both the inner and outer sides of the counterweights, effectively suppressing crankshaft deformation and ensuring the machining accuracy and quality of the crankshaft; and the first limiting member and the second limiting member themselves are adjustable to adapt to crankshafts of different sizes and structures.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the overall structure of the first limiting member in the anti-deformation code iron according to one embodiment of this application; Figure 2 for Figure 1Schematic diagram of the cross section at section AA; Figure 3 This is a schematic diagram of the overall structure of the second limiting member in an anti-deformation code block according to one embodiment of this application; Figure 4 This is a schematic diagram of the anti-deformation code iron installed on the crankshaft according to one embodiment of this application.

[0018] Figure label: 100, First limiting component; 110, First protrusion; 111, First through hole; 120, Second protrusion; 121, Second through hole; 130, Fastener; 140, Connecting rod; 200, Second limiting component; 210, Telescopic component; 211, First limiting end; 220, Telescopic sleeve; 221, Second limiting end; 300, Crankshaft; 310, Counterweight; 320, Main journal; 400, Frame fixing part. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0023] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] The following is for reference. Figures 1 to 4 This application describes the anti-deformation code iron and its usage method according to embodiments of the present application.

[0025] It is worth noting that, please refer to Figure 1 In the coordinate axes, the first direction in this embodiment of the application is the left-right direction of the X-axis, where the X-axis arrow points to the right, and the second direction is the up-down direction of the Y-axis, where the Y-axis arrow points upward.

[0026] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 One embodiment of this application includes a first limiting member 100 and a second limiting member 200. The first limiting member 100 includes a first protrusion 110, a second protrusion 120, and fasteners 130. The first protrusion 110 has a first through hole 111, and the second protrusion 120 has a second through hole 121. There are two fasteners 130. The second limiting member 200 includes a telescopic member 210 and a telescopic sleeve 220. The telescopic member 210 can extend into and out of the telescopic sleeve 220. The limiting member 100 is able to span two adjacent counterweights 310 of the crankshaft 300 so that the two adjacent counterweights 310 are located inside the first protrusion 110 and the second protrusion 120. One fastener 130 passes through the first through hole 111 and abuts against one of the counterweights 310 inward. The other fastener 130 passes through the second through hole 121 and abuts against the other counterweight 310 inward. The second limiting member 200 is able to be inserted between two adjacent counterweights 310 of the crankshaft 300 and abut against the two counterweights 310 outward.

[0027] In other words, such as Figure 1 and Figure 2As shown, the first limiting member 100 includes an upwardly protruding first protrusion 110 and a second protrusion 120. Both the first protrusion 110 and the second protrusion 120 have through holes in the left and right directions. The through hole in the first protrusion 110 is the first through hole 111, and the through hole in the second protrusion 120 is the second through hole 121. The first limiting member 100 also includes fasteners 130. There are two fasteners 130. One fastener 130 can be inserted into the first through hole 111 from the outside of the first protrusion 110, that is, inserted into the first through hole 111 from the left side of the first protrusion 110. The other fastener 130 can be inserted into the second through hole 121 from the outside of the second protrusion 120, that is, inserted into the second through hole 121 from the right side of the second protrusion 120.

[0028] like Figure 3 As shown, the second limiting member 200 includes a telescopic sleeve 220 and a telescopic member 210. The telescopic member 210 can move within the telescopic sleeve 220, thereby changing the overall length of the second limiting member 200.

[0029] like Figure 4 As shown, the fastener 130 of the first limiting member 100 abuts against the outer side of two adjacent counterweights 310 on the crankshaft 300 through the first protrusion 110 and the second protrusion 120 of the first limiting member 100. By adjusting the distance of the fastener 130 extending into the first through hole 111 and the second through hole 121, the distance between the outer side of adjacent counterweights 310 in crankshafts of different specifications can be adapted. The telescopic sleeve 220 and the telescopic member 210 of the second limiting member 200 are fastened between two adjacent counterweights 310 and abut against the inner side of the counterweights 310. By adjusting the distance of the telescopic member 210 extending into the telescopic sleeve 220, the distance between the inner side of adjacent counterweights 310 in crankshafts of different specifications can be adapted.

[0030] Therefore, when the crankshaft 300 rotates on the machine tool, the anti-deformation weights abut against the counterweight 310 on both the inner and outer sides, preventing unnecessary displacement and deformation of the crankshaft 300 when subjected to external forces, effectively suppressing the deformation of the crankshaft 300, and ensuring the machining accuracy and quality of the crankshaft 300; and the first limiting member 100 and the second limiting member 200 are adjustable, which can adapt to crankshafts 300 of different sizes and structures.

[0031] Furthermore, such as Figure 1 As shown, the first limiting member 100 includes a connecting rod 140 arranged along a first direction, and a first protrusion 110 and a second protrusion 120 are both located in a second direction of the connecting rod 140. That is, as... Figure 1As shown, the connecting rod 140 is arranged in the left-right direction. The first protrusion 110 and the second protrusion 120 are provided on the upper surface of the connecting rod 140. The first protrusion 110 is located at the left end of the connecting rod 140, and the second protrusion 120 is located at the right end of the connecting rod 140. The first protrusion 110 and the second protrusion 120 are both welded and fixed to the connecting rod 140. A 45° bevel is provided between the first protrusion 110 and the connecting rod 140 to ensure that the first protrusion 110 and the connecting rod 140 can be fully welded, thereby strengthening the connection strength between the first protrusion 110 and the connecting rod 140. The welding of the second protrusion 120 to the connecting rod 140 is also treated in the same way.

[0032] In some embodiments, such as Figure 1 and Figure 3 As shown, the fastener 130 is formed as a screw, and the first through hole 111 and the second through hole 121 are both provided with threads adapted to the fastener 130; the telescopic member 210 is formed as a hexagonal bolt, and the telescopic sleeve 220 is provided with threads that match the telescopic member 210.

[0033] It is understandable that, such as Figure 4 As shown, the fastener 130 is threaded into the first through hole 111 and the second through hole 121. Based on the distance between the outer sides of the two adjacent counterweights 310 and the length of the connecting rod 140 in the first limiting member 100, the length of the fastener 130 screwed into the first through hole 111 and the second through hole 121 can be flexibly adjusted, thereby realizing the limiting effect of the first limiting member 100 on the outer sides of the two adjacent counterweights 310. The right end of the telescopic member 210 is formed into a hexagonal prism structure as the first limiting end 211. The telescopic member 210 is threaded into the telescopic sleeve 220. Based on the distance between the inner sides of the two adjacent counterweights 310, the distance of the telescopic member 210 extending into the telescopic sleeve 220 can be adjusted by rotating the first limiting end 211 with a wrench, thereby realizing the limiting effect of the second limiting member 200 on the inner sides of the two adjacent counterweights 310.

[0034] Furthermore, such as Figure 3 As shown, the telescopic sleeve 220 is provided with a second limiting end 221, which is formed as a hexagonal prism. That is, the right end of the telescopic sleeve 220 has a threaded hole for the telescopic component 210 to screw into, and the left end of the telescopic sleeve 220 forms the second limiting end 221, which is a hexagonal prism. When the second limiting component 200 is placed between two adjacent counterweights 310, the operator uses a wrench to hold the second limiting end 221 to fix the telescopic sleeve 220, and the operator uses another wrench to hold the first limiting end 211 and rotate the first limiting end 211 to make the telescopic component 210 screw into or out of the telescopic sleeve 220. In this way, the second limiting component 200 can be adjusted so that the first limiting end 211 abuts against the counterweight 310 on the right and the second limiting end 221 abuts against the counterweight 310 on the left.

[0035] Furthermore, both the first limiting member 100 and the second limiting member 200 are made of Q235 steel. After the first protrusion 110 and the second protrusion 120 in the first limiting member 100 are welded to the connecting rod 140, the first limiting member 100 and the second limiting member 200 are annealed to achieve a hardness of HRC36-HRC40, so that the first limiting member 100 and the second limiting member 200 are not easily worn during long-term use.

[0036] Furthermore, the first limiting member 100 and the second limiting member 200 are provided with reinforcing ribs in the left and right directions to enhance the deformation resistance of the first limiting member 100 and the second limiting member 200.

[0037] The following is combined Figure 4 The method of using the anti-deformation code iron according to another embodiment of this application is described in detail, including the following steps: S1. Fix the main journal 320 of the crankshaft 300 to the frame fixing part 400 of the machine tool; S2. Install the second limiting member 200 between two adjacent counterweights 310 of the crankshaft 300; S3. Use a wrench to lock the telescopic sleeve 220 into the second limiting end 221, and at the same time use another wrench to lock the first limiting end 211, and rotate the telescopic component 210 to screw it into or out of the telescopic sleeve 220 until the first limiting end 211 and the second limiting end 221 abut against the inner side of the two counterweights 310. S4. Install the first limiting member 100 onto two adjacent counterweights 310. The first protrusion 110 and the second protrusion 120 are both located on the outside of the two counterweights 310. The first protrusion 110 is located on the left side of the left counterweight 310, and the second protrusion 120 is located on the right side of the right counterweight 310. S5. Screw one fastener 130 into the first through hole 111 and press it against the outside of one of the counterweights 310. At the same time, screw another fastener 130 into the second through hole 121 and press it against the outside of the other counterweight 310. The anti-deformation iron clamping is now complete.

[0038] In step S3, when using a wrench to secure the crankshaft, the second limiting member 200 should be firmly in place and not loose. If significant resistance is felt or the second limiting member 200 shows a slight tendency to deform, the application of force should be stopped immediately. Preferably, a method of lightly tightening in stages can be used, applying small force each time, adjusting multiple times until a stable state is achieved. Ensure that the second limiting member 200 is centered between the two counterweights 310 to avoid uneven stress and deformation of the crankshaft 300 due to misalignment of the second limiting member 200.

[0039] In step S4, it is necessary to maintain the fit between the first protrusion 110, the second protrusion 120, and the counterweight 310. The installation of the first limiting member 100 is judged by observing whether the gap width between the first protrusion 110, the second protrusion 120, and the counterweight 310 is uniform. When installing the first limiting member 100 by hoisting or manual installation, the crankshaft 300 can be rotated to a suitable position to ensure that the connecting rod 140 does not slip.

[0040] In step S5, the installation of fastener 130 also needs to follow the principle of moderate tightening. During the screwing of fastener 130, the state of the first limiting member 100 should be monitored at all times. If indentations are found on the contact surface between the first limiting member 100 and the crankshaft 300 or if the first limiting member 100 itself is deformed, the applied force should be reduced and readjusted to avoid damage to the crankshaft 300 and the anti-deformation iron.

[0041] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A non-deforming code iron, characterized in that, include: The first limiting member includes a first protrusion, a second protrusion, and fasteners. The first protrusion has a first through hole, the second protrusion has a second through hole, and there are two fasteners. The second limiting member includes a telescopic member and a telescopic sleeve, wherein the telescopic member can extend into and out of the telescopic sleeve; The first limiting member can span two adjacent counterweights of the crankshaft so that the two adjacent counterweights are located inside the first protrusion and the second protrusion. One of the fasteners passes through the first through hole and abuts against one of the counterweights inward. The other fastener passes through the second through hole and abuts against the other counterweight inward. The second limiting member can be inserted between two adjacent counterweights of the crankshaft and abuts against the two counterweights outward.

2. The anti-deformation code iron according to claim 1, wherein The first limiting member includes a connecting rod arranged along a first direction, and the first protrusion and the second protrusion are both located in a second direction of the connecting rod.

3. The anti-deformation code iron according to claim 2, wherein The first direction is perpendicular to the second direction.

4. The anti-deformation code iron according to claim 1, characterized in that, The fastener is formed into a screw, and both the first through hole and the second through hole are provided with threads adapted to the fastener.

5. The anti-deformation code iron according to claim 1, characterized in that, The telescopic component is formed as a hexagonal bolt, and the telescopic sleeve has a thread that matches the telescopic component.

6. The anti-deformation code iron according to claim 5, characterized in that, The telescopic sleeve is provided with a second limiting end, which is formed as a hexagonal prism.

7. The anti-deformation code iron according to claim 1, characterized in that, Both the first through hole and the second through hole are arranged along the first direction.

8. The anti-deformation code iron according to claim 1, characterized in that, Both the first limiting member and the second limiting member are made of Q235 steel.

9. The anti-deformation code iron according to claim 2, characterized in that, Both the first protrusion and the second protrusion are welded to the connecting rod.

10. The anti-deformation code iron according to claim 1, characterized in that, Both the first limiting member and the second limiting member are provided with reinforcing ribs along the first direction.

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