Bimetal rod end face grinding device
By designing a bimetallic rod end face grinding device that automatically clamps the material fixing shaft system and rotates the hollow shaft synchronously, the problem of randomness in manual grinding is solved, and grinding with the end face perpendicular to the axis is achieved, thus improving grinding quality and measurement accuracy.
Patent Information
- Application Number
- CN202512026082.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-03-27
AI Technical Summary
In the existing technology, the end face of bimetallic rods is processed by manual grinding, which is highly unpredictable and makes it difficult to consistently meet the end face requirements. This results in large differences in grinding quality, affecting the accuracy and reliability of subsequent thickness measurements.
A bimetallic rod end face grinding device was designed, including a base, a grinding drive mechanism, a material fixing shaft system and sandpaper. The material fixing shaft system automatically presses itself onto the sandpaper under gravity and rotates synchronously with the rotating hollow shaft, ensuring that the grinding force is perpendicular to the sandpaper surface and reducing tilting errors and chamfering.
It improves the consistency and efficiency of grinding, ensures that the end face is perpendicular to the axis, reduces elliptic error and chamfering, and improves the accuracy and consistency of projection measurement.
Smart Images
Figure CN121733424A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of metal material end face processing technology, and in particular to a bimetallic rod end face grinding device. Background Technology
[0002] In applications involving bimetallic rods such as aluminum-clad steel, precise measurement of the metal thickness is often required. Accurate measurement depends on the bimetallic rod having end faces that meet stringent requirements: First, the end face roughness must reach 0.2μm, exhibiting a mirror-like finish to ensure the projector can clearly capture the end face contour during measurement. Second, the end face must be perpendicular to the bimetallic rod's axis; tilted or elliptical end faces will lead to significant deviations in thickness measurement results. Third, the end face edges must not have chamfers, as chamfers will prevent the detection of edge thickness.
[0003] Currently, the industry generally uses manual grinding to process and grind the end face of bimetallic rods. However, manual grinding is easily affected by various factors such as the operator's skill level and the uniformity of force, resulting in a high degree of randomness. This not only makes it difficult to consistently meet the above three end face requirements, but also easily leads to large differences in grinding quality between different batches or even different workpieces in the same batch. Consequently, the subsequent thickness measurement error is significant, seriously affecting the accuracy and reliability of product quality inspection. Summary of the Invention
[0004] This application provides a bimetallic rod end face grinding device to solve the problem that the existing manual grinding method has a large degree of randomness, which can easily lead to large differences in the grinding quality of the metal rod end face and affect the accuracy of subsequent measurements.
[0005] This application provides a bimetallic rod end face grinding device, comprising:
[0006] A base plate on which a machine base is mounted;
[0007] A grinding drive mechanism, mounted on the machine base, includes a drive motor, a transmission assembly, and a rotating hollow shaft, which is rotatably mounted inside the machine base via a bearing assembly.
[0008] A material fixing shaft system is coaxially inserted inside the rotating hollow shaft, including a material fixing shaft and a locking assembly. The locking assembly is engaged at the top of the material fixing shaft and is used to clamp the dual-material metal rod to be ground.
[0009] Sandpaper is placed on the base plate of the machine base, located below the dual-material metal rod;
[0010] The material fixing shaft system is slidably inserted inside the rotating hollow shaft, and can move downward along its axis under the action of gravity to press the end face of the dual-material metal rod onto the sandpaper. The material fixing shaft system can also rotate synchronously with the rotating hollow shaft.
[0011] Preferably, the rotating hollow shaft and the material fixing shaft system are connected by a circumferential linkage component to drive the material fixing shaft to rotate along with the rotating hollow shaft.
[0012] Preferably, the locking assembly includes a locking groove, a locking block, a locking hole, and a locking element, wherein:
[0013] The locking groove is formed at the top of the material fixing shaft, the locking block is fixed on both sides of the locking groove, and the locking hole is formed on the locking block and passes through the locking block;
[0014] The dual-material metal rod passes through the material fixing shaft, and the locking member passes through the locking hole to tighten the locking groove and lock the dual-material metal rod.
[0015] Preferably, the circumferential linkage assembly includes a semi-circular lever and the locking block, wherein:
[0016] The top of the rotating hollow shaft is provided with a relief groove on the side near the locking block. The relief groove makes the top of the rotating hollow shaft form a non-closed annular structure, which constitutes the semi-circular lever. The outer surface of the locking block abuts against the side wall of the semi-circular lever.
[0017] Preferably, the circumferential linkage component includes a guide groove and a connecting block, wherein:
[0018] The outer surface of the material fixing shaft and / or the rotating hollow shaft is provided with a plurality of guide grooves along its axial direction, and the plurality of guide grooves are distributed in a circular array along its circumference.
[0019] The inner wall of the rotating hollow shaft and / or the material fixing shaft is provided with a plurality of connecting blocks, and the connecting blocks are slidably inserted into a corresponding guide groove.
[0020] Preferably, the locking hole is a threaded hole and the locking component is a locking screw; or, the locking hole is a through hole and the locking component is a locking bolt and a locking nut.
[0021] Preferably, the bearing assembly includes a first bearing and a second bearing coaxially mounted on the base, and one end of the rotating hollow shaft passes through the first bearing and the second bearing sequentially from top to bottom and is fixed by a limiting mechanism.
[0022] Preferably, both the first bearing and the second bearing are double thrust bearings, and the limiting structure includes a limiting boss, a limiting washer, and a fixing nut that are coaxially arranged on the rotating hollow shaft in sequence.
[0023] One end of the rotating hollow shaft abuts against the outer end face of the second bearing via the limiting boss, and the other end passes through the first bearing, the limiting washer and the transmission assembly in sequence, and is then locked to the machine base by the fixing nut.
[0024] Preferably, the drive motor is fixedly mounted on one side of the rotating hollow shaft and fixedly connected to the machine base, and the rotating hollow shaft is connected to the drive motor through the transmission assembly.
[0025] Preferably, the sandpaper is detachably mounted on the base plate of the machine via a hollow pressure plate.
[0026] The beneficial effects of this application are as follows:
[0027] The bimetallic rod end face grinding device of this application, by setting a material fixing shaft system that can rotate synchronously with the rotating hollow shaft and slide freely along its axial direction, allows the bimetallic rod to be adaptively pressed onto the sandpaper for grinding using the gravity of the material fixing shaft system itself. This ensures that the grinding force is always perpendicular to the sandpaper surface, providing a guarantee for the perpendicularity between the end face and the axis, and reducing elliptical errors caused by tilting. At the same time, the mechanized grinding process reduces the randomness of manual operation and improves the consistency and efficiency of grinding.
[0028] Furthermore, by using the material fixing axis system to automatically press and rotate at a constant speed under the action of gravity, the uncertainty of manual operation is eliminated. Moreover, since the pressure during the rotary grinding process is constant and vertical, the force on the edge of the end face is more uniform, which can effectively reduce the possibility of chamfering during grinding and ensure that the projector can clearly capture edge data, thereby improving the consistency and accuracy of projection measurement. Attached Figure Description
[0029] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0030] Figure 1 A schematic diagram of the overall structure of the bimetallic rod end face grinding device provided in the embodiments of this application;
[0031] Figure 2 for Figure 1Schematic diagram of the cross section at point AA;
[0032] Figure 3 for Figure 1 Schematic diagram of the cross section at point BB;
[0033] Figure 4 This is a schematic diagram of another embodiment of the grinding apparatus provided in this application.
[0034] Figure label:
[0035] 1. Base plate; 2. Sandpaper; 3. Fixing nut; 4. Driven pulley; 5. Limit washer; 6. First bearing; 7. Rotating hollow shaft; 8. Material fixing shaft; 9. Dual-material metal rod; 10. Locking hole; 11. Second bearing; 12. Base; 13. Synchronous belt; 14. Drive motor; 15. Drive pulley; 16. Locking component; 17. Semi-circular lever; 18. Connecting block; 19. Third bearing; 20. Third bearing. Detailed Implementation
[0036] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0037] The following is combined Figure 1-4 This application describes the bimetallic rod end face grinding apparatus provided in the embodiments of this application.
[0038] Reference Figure 1 As shown, the bimetallic rod end face grinding device provided in this application embodiment mainly includes a base plate 1, a base 12, a grinding drive mechanism, a material fixing shaft system, and sandpaper 2. The base 12 is fixedly installed on the base plate 1 as the supporting foundation of the entire device. The sandpaper 2 is detachably installed on the base plate 1 through a hollow pressure plate and is located directly below the bimetallic rod 9. It is used to grind the end face of the rotating bimetallic rod 9. The sandpaper 2 also includes coarse sandpaper for coarse grinding and metallographic sandpaper for fine grinding.
[0039] The grinding drive mechanism is mounted on the base 12 and includes a drive motor 14, a transmission assembly, and a rotating hollow shaft 7. The rotating hollow shaft 7 is rotatably mounted on the base 12 via a bearing assembly. The bearing assembly includes a first bearing 6 and a second bearing 11 coaxially mounted on the base 12. One end of the rotating hollow shaft 7 passes through the first bearing 6 and the second bearing 11 sequentially from top to bottom and is fixed by a limiting mechanism. To improve the stability of the support and the rotational accuracy, both the first bearing 6 and the second bearing 11 are preferably double thrust bearings.
[0040] In some specific embodiments, the limiting mechanism includes a limiting boss, a limiting washer 5, and a fixing nut 3 coaxially arranged on the rotating hollow shaft 7. One end of the rotating hollow shaft 7 abuts against the outer end face of the second bearing 11 through the limiting boss, and the other end passes through the first bearing 6, the limiting washer 5, and the transmission assembly in sequence, and is then locked to the base 12 by the fixing nut 3. A threaded connection for screwing the fixing nut 3 is also provided on the outer surface of the rotating hollow shaft 7 at the end away from the limiting boss. Furthermore, to reduce locking damage between components, a second limiting washer can be added between the fixing nut 3 and the driven pulley 4 to reduce relative wear between them.
[0041] In some specific embodiments, the drive motor 14 is fixedly mounted on one side of the rotating hollow shaft 7 and fixedly connected to the base 12. A transmission assembly connects the drive motor 14 and the rotating hollow shaft 7. In this embodiment, the transmission assembly includes a drive pulley 15 fixed to the output shaft of the drive motor 14, a driven pulley 4 fixed to the rotating hollow shaft 7 and located between the fixing nut 3 and the first bearing 6, and a synchronous belt 13 rotatably connected between the two.
[0042] Specifically, in this embodiment, the drive motor 14 is fixed to one side of the base 12 by a bracket or screws. The rotating hollow shaft 7 is supported in the corresponding mounting holes in the base 12 by the first bearing 6 and the second bearing 11. Both bearings are preferably double thrust bearings to withstand the downward pressure from the axial direction. The upper end of the rotating hollow shaft 7 forms a limiting boss through a shoulder to abut against the lower end face of the second bearing 11, providing a limiting basis for its axial mounting position. Its lower end passes through the first bearing 6, the limiting washer 5, and the driven pulley 4 in the transmission assembly in sequence, and is locked by a fixing nut 3 screwed onto its outer surface thread, thereby locking its axial mounting position. The output shaft of the drive motor 14 is equipped with a drive pulley 15, which drives the driven pulley 4 and the rotating hollow shaft 7 to rotate through the synchronous belt 13.
[0043] On the other hand, to ensure the overall verticality of the grinding drive mechanism during operation, such as Figure 4 As shown, a third bearing 19 can also be fixed on the outer surface of the limiting boss, and a fixed pulley 20 can be set at the same horizontal position as the third bearing. The two are connected by a tightening belt drive. The fixed pulley 20 is set on the side of the rotating hollow shaft 7 away from the drive motor 14, providing a tightening force opposite to the transmission component to the top of the rotating hollow shaft 7, so as to cancel and balance the force from the transmission component.
[0044] In some specific embodiments, the material fixing shaft system includes a material fixing shaft 8 and a locking assembly. The dual-material metal rod 9 to be ground passes through the material fixing shaft 8, and the locking assembly is engaged at the top of the material fixing shaft 8 to clamp the dual-material metal rod 9 to be ground. The locking assembly includes a locking groove, a locking block, a locking hole 10, and a locking element 16. The locking groove is located at the top of the material fixing shaft 8, the locking block is fixed on both sides of the locking groove, and the locking hole 10 is located on and passes through the locking block.
[0045] The dual-material metal rod 9 is inserted into the material fixing shaft 8, and the locking member 16 passes through the locking hole 10 to tighten the locking groove, thereby locking the dual-material metal rod 9. Multiple locking grooves can be provided, and locking blocks are provided on both sides of any locking groove.
[0046] In one embodiment, the locking hole 10 can be a threaded hole, in which case the locking member 16 can be a locking screw that mates with it; in another embodiment, the locking hole 10 can also be a through hole, and the locking member 16 can be a locking bolt and a locking nut that mate with each other, and the top of the material fixing shaft 8 is tightened by tightening the locking nut.
[0047] Specifically, in this embodiment, such as Figure 3 As shown, the material fixing shaft system consists of a material fixing shaft 8 and a locking assembly. The material fixing shaft 8 is a hollow cylinder with one or more locking grooves radially opened at its top. Each locking groove has a locking block integrally formed or welded to it on both sides. The two locking blocks on the corresponding sides have locking holes 10 coaxially opened. The double material metal rod 9 is inserted into the central through hole opened at the material fixing shaft 8 and its end is slightly exposed. The locking component 16 is passed through the locking hole 10 and tightened to make the locking blocks on both sides close together, thereby clamping the double material metal rod 9.
[0048] In some specific embodiments, the material fixing shaft system and the rotating hollow shaft 7 are coaxially arranged, and the material fixing shaft system slides through the rotating hollow shaft 7. The two are connected by a circumferential linkage component, so that the material fixing shaft 8 can rotate with the rotating hollow shaft 7, while allowing the material fixing shaft system to move axially.
[0049] Specifically, such as Figure 2As shown, in one embodiment, the circumferential linkage component includes a semi-circular lever 17 and a locking block. The top of the rotating hollow shaft 7 has a corresponding clearance groove at a position corresponding to the locking block, forming an open arc-shaped structure at its top, namely the semi-circular lever 17. When the material fixing shaft system is inserted into the rotating hollow shaft 7, the outer wall of the locking block at its top contacts the inner wall of the semi-circular lever 17. At this time, when the rotating hollow shaft 7 rotates, the semi-circular lever 17 can move the locking block to rotate together, thereby driving the entire material fixing shaft system and the double-material metal rod 9 clamped within it to rotate together. Simultaneously, since there is no rigid axial connection between the material fixing shaft system and the rotating hollow shaft 7, it can fall freely under gravity, thereby causing the double-material metal rod 9 to press against the corresponding sandpaper 2.
[0050] In another embodiment, the circumferential linkage assembly includes guide grooves and connecting blocks 18. Multiple guide grooves are formed along the axial direction on the outer surface of the material fixing shaft 8 and / or the rotating hollow shaft 7, and these guide grooves are arranged in a circumferential annular array. Multiple connecting blocks 18 are correspondingly fixed to the inner wall of the rotating hollow shaft 7 and / or the material fixing shaft, with each connecting block 18 slidably inserted into a corresponding guide groove. As an alternative to the circumferential linkage assembly, multiple evenly distributed guide grooves can be machined along the axial direction on the outer wall of the material fixing shaft 8, while corresponding connecting blocks 18 are fixed to the inner wall of the rotating hollow shaft 7. During assembly, the connecting blocks 18 slide into the guide grooves, which can both transmit torque and guide the axial movement of the material fixing shaft 8.
[0051] like Figure 4 As shown, in this embodiment, as an alternative to the circumferential linkage component, multiple evenly distributed guide grooves are machined along the axial direction on the outer wall of the material fixing shaft 8, and corresponding connecting blocks 18 are fixedly installed at corresponding positions on the inner wall of the rotating hollow shaft 7. During assembly, the connecting blocks are slid into the corresponding guide grooves to achieve the functions of circumferential torque transmission and axial sliding guidance.
[0052] The working process of the bimetallic rod end face grinding device provided in this application is as follows: Coarse sandpaper (e.g., 20#) is fixed to the base plate 1 of the machine base using a hollow pressure plate. The material fixing shaft system with the sample clamped is inserted into the rotating hollow shaft 7 on the machine base 12, where the sandpaper rotates. Under gravity, it gradually falls, pressing the end face of the bimetallic rod 9 firmly onto the sandpaper 2. At this time, under the uniform rotation driven by the drive motor 14 and continuous pressure, the end face of the bimetallic rod 9 will be gradually ground smooth until it reaches the mirror surface roughness requirement.
[0053] Insert the dual-material metal rod 9 to be ground into the material fixing shaft 8, adjust the exposed length of the grinding head to 1-2mm, then tighten the locking part 16 to lock it, complete the assembly of the material fixing shaft system, and pass the material fixing shaft system through the rotating hollow shaft 7, so that it falls by its own weight until the end face of the dual-material metal rod 9 contacts the sandpaper 2 laid on the base plate 1.
[0054] When the drive motor 14 is started, the torque is transmitted to the rotating hollow shaft 7 via the driving pulley 15, the synchronous belt 13, and the driven pulley 4. The rotating hollow shaft 7 can then drive the material fixing shaft system and the double material metal rod 9 clamped therein to rotate synchronously through the circumferential linkage assembly.
[0055] During grinding, 20# coarse sandpaper can be used for quick grinding to rough grind the end face of the dual-material metal rod 9 to remove uneven end face structures. After the end face is flat, metallographic sandpaper can be used for fine grinding to achieve the mirror finish. During the grinding process, the material fixing shaft system always presses the dual-material metal rod 9 firmly onto the sandpaper 2 under the action of gravity, and the material fixing shaft system can be pulled out at any time to check its grinding effect.
[0056] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this application.
[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0058] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0059] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0060] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A bimetallic rod end face grinding device, characterized in that, include: A base plate (1) is provided on which a base (12) is mounted; The grinding drive mechanism is located on the machine base (12) and includes a drive motor (14), a transmission assembly and a rotating hollow shaft (7). The rotating hollow shaft (7) is rotatably mounted in the machine base (12) through a bearing assembly. The material fixing shaft system is coaxially inserted inside the rotating hollow shaft (7), including the material fixing shaft (8) and the locking assembly. The locking assembly is locked at the top of the material fixing shaft (8) and is used to clamp the dual-material metal rod (9) to be ground. Sandpaper (2) is placed on the base plate (1) of the machine base, located below the dual-material metal rod (9); The material fixing shaft system is slidably inserted inside the rotating hollow shaft (7), and can move downward along its axis under the action of gravity to press the end face of the dual-material metal rod (9) onto the sandpaper (2), and the material fixing shaft system can rotate synchronously with the rotating hollow shaft (7).
2. The bimetallic rod end face grinding device according to claim 1, characterized in that, The rotating hollow shaft (7) is connected to the material fixing shaft system by a circumferential linkage component, so as to drive the material fixing shaft (8) to rotate following the rotating hollow shaft (7).
3. The bimetallic rod end face grinding device according to claim 2, characterized in that, The locking assembly includes a locking groove, a locking block, a locking hole (10), and a locking element (16), wherein: The locking groove is opened at the top of the material fixing shaft (8), the locking block is fixed on both sides of the locking groove, and the locking hole (10) is opened on the locking block and passes through the locking block; The dual-material metal rod passes through the material fixing shaft (8), and the locking member (16) passes through the locking hole (10) to tighten the locking groove and lock the dual-material metal rod (9).
4. The bimetallic rod end face grinding device according to claim 3, characterized in that, The circumferential linkage assembly includes a semi-circular lever (17) and the locking block, wherein: The top of the rotating hollow shaft (7) is provided with a relief groove on the side near the locking block. The relief groove makes the top of the rotating hollow shaft form a non-closed annular structure, which constitutes the semi-circular lever (17). The outer surface of the locking block abuts against the side wall of the semi-circular lever (17).
5. The bimetallic rod end face grinding device according to claim 3, characterized in that, The circumferential linkage component includes a guide groove and a connecting block (18), wherein: The outer surface of the material fixing shaft (8) and / or the rotating hollow shaft (7) is provided with a plurality of guide grooves along its axial direction, and the plurality of guide grooves are distributed in a ring array along its circumference; The inner walls of the rotating hollow shaft (7) and / or the material fixing shaft (8) are respectively fixed with a plurality of connecting blocks (18), and the connecting blocks (18) are slidably inserted into a corresponding guide groove.
6. The bimetallic rod end face grinding apparatus according to claim 3, characterized in that, The locking hole (10) is a threaded hole, and the locking component (16) is a locking screw, or the locking hole (10) is a through hole, and the locking component is a locking bolt and a locking nut.
7. The bimetallic rod end face grinding device according to claim 1, characterized in that, The bearing assembly includes a first bearing (6) and a second bearing (11) coaxially mounted on the base (12). One end of the rotating hollow shaft (7) passes through the first bearing (6) and the second bearing (11) from top to bottom and is then fixed by a limiting mechanism.
8. The bimetallic rod end face grinding apparatus according to claim 7, characterized in that, The first bearing (6) and the second bearing (11) are both double thrust bearings. The limiting structure includes a limiting boss, a limiting washer (5) and a fixing nut (3) that are coaxially arranged on the rotating hollow shaft (7) in sequence. One end of the rotating hollow shaft (7) abuts against the outer end face of the second bearing (11) through the limiting boss, and the other end passes through the first bearing (6), the limiting washer (5) and the transmission assembly in sequence, and is locked to the base (12) by the fixing nut (3).
9. The bimetallic rod end face grinding apparatus according to claim 1, characterized in that, The drive motor (14) is fixed on one side of the rotating hollow shaft (7) and is fixedly connected to the base (12). The rotating hollow shaft (7) is connected to the drive motor (14) through the transmission assembly.
10. The bimetallic rod end face grinding apparatus according to claim 1, characterized in that, The sandpaper (2) is detachably mounted on the base plate (1) of the machine base via a hollow pressure plate.