Crankshaft polishing machine

Abstract

The utility model discloses a crankshaft polishing machine, which belongs to the technical field of crankshaft processing and comprises a casing, assembling mechanisms for mounting a crankshaft body are mounted on two sides of the casing, a driving device is arranged in the casing, a bearing component is mounted at the bottom of the driving device, and a clamping plate mechanism is rotatably mounted on the bearing component. The clamping plate mechanism comprises an adjusting plate body, a sleeve hole is formed in the top end of the adjusting plate body, a driving strip hole is formed in the side wall of the adjusting plate body, a polishing assembly is installed at the bottom end of the adjusting plate body, an opening and closing device is installed on the lower portion of the bearing component, and the assembling mechanism enables a crankshaft to be stably installed and rotated. The driving device enables the polishing assembly to accurately follow; the bearing component provides stable support for the clamping plate mechanism; the adjusting plate is reasonably mounted to facilitate polishing; the opening and closing device controls opening and closing of the polishing assembly, external influence is small, and stable polishing is guaranteed; the polishing assembly improves the polishing effect and buffers impact force, the polishing machine is stable and reliable in overall operation, and the polishing quality can be guaranteed.

Description

Technical Field

[0001] This utility model relates to a crankshaft polishing machine, belonging to the field of crankshaft processing technology. Background Technology

[0002] In an engine, the crankshaft is a core component, and its performance directly affects the overall performance of the engine. Crankshafts are typically manufactured using forging, casting, or machining methods. However, forged and cast crankshaft blanks cannot meet the final dimensional and precision requirements before subsequent machining. To ensure crankshaft performance, it must undergo processes such as turning, milling, and grinding, and finally, polishing. The main purpose of polishing is to reduce the coefficient of friction on the outer diameter of the crankshaft, improve wear resistance, and help form and maintain a lubricating oil film.

[0003] For example, Chinese invention patent document with publication number CN119407629A discloses an engine crankshaft grinding and polishing device, including a base plate, support plates are equidistantly installed on the top front and rear end faces of the base plate, a fixing plate is installed on the top of the support plate, and a rotatable crankshaft body is equidistantly installed between the two fixing plates.

[0004] When the crankshaft journals need to be polished, all the crankshaft journals are encased in an arc-shaped polishing plate, and the drive equipment starts to rotate at a constant speed. The crankshaft journals rotate around the crankshaft axis, driving the arc-shaped polishing plate to rotate synchronously. During this process, the piston assembly performs piston movement, which can polish all the crankshaft journals on the crankshaft body at one time.

[0005] However, this patented technology has some shortcomings in the process of polishing crankshaft journals. Although the piston assembly and polishing structure achieve follow-up polishing with the outer circle of the crankshaft journal, the large range of motion between the components makes it impossible to guarantee the smoothness of the movement. In addition, when the crankshaft rotates, the arc-shaped rod pushes the bidirectional screw at an angle, making it difficult to extend the service life of the bidirectional screw. At the same time, after the two oppositely arranged arc-shaped polishing plates wear down, it is difficult to maintain a good polishing effect. These defects not only affect the efficiency and quality of polishing and the poor stability of the equipment during operation, but also have a potential impact on the long-term use of the equipment. Therefore, this utility model is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a crankshaft polishing machine to solve the above-mentioned problems, which can solve the problems of unstable polishing, poor grinding efficiency and quality mentioned in the prior art.

[0007] This utility model achieves the above-mentioned objectives through the following technical solution: a crankshaft polishing machine includes a housing. Assembly mechanisms for mounting the crankshaft body are installed on both sides of the housing. These assembly mechanisms mount the crankshaft body and drive it to rotate, thus improving the polishing process. A drive device is installed inside the housing. During the polishing of the crankshaft body, the crankshaft journal rotates continuously, requiring the drive device to move the polishing assembly accordingly to ensure a stable polishing effect. A bearing component is installed at the bottom of the drive device. A clamping mechanism is rotatably mounted on the bearing component. The clamping mechanism includes an adjusting plate. A sleeve hole is opened at the top of the adjusting plate, and a drive strip hole is opened on the side wall of the adjusting plate. A polishing assembly is installed at the bottom of the adjusting plate. An opening and closing device is installed at the lower part of the bearing component. This device controls the tightness of the polishing assembly, ensuring that the polishing block remains close to the outer wall of the crankshaft body to be polished. A power connector is provided on one side of the housing via a power cord.

[0008] Preferably, in order to more securely install the crankshaft body and achieve its stable rotation, the assembly mechanism includes a snap-fit ​​plate located inside the housing, a rotation drive device connected to the snap-fit ​​plate, and the snap-fit ​​plate rotatably snaps onto the electric telescopic rod, which is fixed to the side wall of the housing. There are many existing methods for fixing the crankshaft body, which will not be elaborated on here.

[0009] Preferably, in order to enable the polishing assembly to move precisely following the rotation of the crankshaft journal, the drive device includes a lead screw rotatably mounted between the inner walls of the housing, one end of the lead screw being additionally connected to a drive mechanism, a sliding block being mounted on the lead screw, a lifting telescopic rod being fixed on the side wall of the sliding block, and the bottom end of the lifting telescopic rod being fixed to the bearing component through a connecting block.

[0010] Preferably, in order to provide stable support and rotational foundation for the clamping mechanism, the bearing component includes a receiving seat located below the connecting block, a central rod fixed on the side wall of the receiving seat, the top end of the adjusting plate being rotatably engaged with the central rod through the sleeve hole, a stop block being provided on the central rod, and a filling ring being fitted on the central rod between the adjusting plates to better stabilize the position of the adjusting plates.

[0011] Preferably, in order to better install the adjustment plates on both sides, there are two pairs of adjustment plates, located on both sides below the central rod. One adjustment plate has a polishing component installed at its bottom, and the upper part of the other adjustment plate has a deflection part, which is used to offset the upper part of the adjustment plate towards the center, thereby facilitating installation and use.

[0012] Preferably, in order to facilitate control of the opening and closing degree of the adjustment plate, the opening and closing device includes a bent plate fixed to the bottom of the receiving seat, one end of the bent plate extending between the drive bar holes, and an opening and closing telescopic rod fixed on the side wall of the bent plate, one end of the opening and closing telescopic rod being fixed with a locking pin, and one end of the locking pin extending into the drive bar hole.

[0013] Preferably, in order to improve the polishing effect and buffer the impact force during the polishing process, the polishing assembly includes an arc-shaped tile. The outer wall of the arc-shaped tile is rotatably snapped onto the bottom end of the adjustment plate via an ear plate and a snap-fit ​​post. An unfolding plate is fixed to the bottom end of the adjustment plate. A polishing block is embedded in the inner wall of the arc-shaped tile. A buffer spring is connected between the side wall of the unfolding plate and the outer wall of the arc-shaped tile.

[0014] The beneficial effects of this utility model are:

[0015] 1. Precise following movement: The drive unit uses a lead screw, drive mechanism, sliding block and lifting telescopic rod to enable the polishing component to move precisely following the rotation of the crankshaft journal. This ensures that the polishing component can always maintain effective contact with the crankshaft journal as it rotates, thus guaranteeing a stable polishing effect.

[0016] 2. Stable support and rotation: The bearing seat and center rod of the load-bearing component provide a stable support and rotational foundation for the clamping plate mechanism, allowing the adjusting plate to rotate flexibly, thereby driving the polishing assembly to better fit the crankshaft body and further improving the stability of the polishing process.

[0017] 3. Proper installation of adjustment plates: Two pairs of adjustment plates are located on both sides below the center rod, and one adjustment plate has a deflection part at the top. This design can better install the adjustment plates on both sides, which is conducive to effective polishing of different parts of the crankshaft, and also facilitates the adjustment of the polishing position.

[0018] 4. Controllable polishing intensity: The opening and closing device, through the bending plate, opening and closing telescopic rod and locking post, facilitates the control of the opening and closing degree of the adjustment plate, thereby precisely controlling the tightness of the polishing components; since the opening and closing degree is actively controlled by the opening and closing device, it is less affected by external factors, and can keep the polishing block stably close to the outer wall of the crankshaft body that needs to be polished, effectively solving the problem of unstable polishing caused by the large movement of components in the prior art.

[0019] 5. High-efficiency polishing and buffering: The combination of the arc-shaped polishing pad, polishing block and buffer spring of the polishing component not only improves the polishing effect, but also buffers the impact force during the polishing process, reduces damage to the crankshaft body and polishing components, extends the service life of the equipment, and further ensures the stability and continuity of the polishing process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the drive device structure of this utility model.

[0022] Figure 3 This is a schematic diagram of the load-bearing component structure of this utility model.

[0023] Figure 4 This is a schematic diagram of the polishing component structure of this utility model.

[0024] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle.

[0025] In the diagram: 1. Housing; 101. Assembly mechanism; 2. Drive unit; 201. Lead screw; 202. Sliding block; 203. Lifting telescopic rod; 3. Bearing component; 301. Support seat; 302. Center rod; 4. Clamping plate mechanism; 401. Adjusting plate; 402. Drive bar hole; 5. Polishing assembly; 501. Arc-shaped tile; 502. Unfolding plate; 503. Polishing block; 504. Buffer spring; 6. Opening and closing device; 601. Bending plate; 602. Opening and closing telescopic rod; 603. Snap-fit ​​post. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-5As shown, a crankshaft polishing machine includes a housing 1. Assembly mechanisms 101 for mounting the crankshaft body are installed on both sides of the housing 1. The assembly mechanisms 101 are used to mount the crankshaft body and drive it to rotate, thus improving the polishing process. A drive device 2 is installed inside the housing 1. During the polishing of the crankshaft body, the crankshaft journal rotates continuously, therefore the drive device 2 needs to drive the polishing assembly 5 to move accordingly, thus ensuring a more stable polishing effect. A bearing component 3 is installed at the bottom of the drive device 2. A clamping mechanism 4 is rotatably mounted on the bearing component 3. The clamping mechanism 4 includes an adjusting plate 401. A sleeve hole is opened at the top of the adjusting plate 401, and a drive bar hole 402 is opened on the side wall of the adjusting plate 401. The polishing assembly 5 is installed at the bottom of the adjusting plate 401. An opening and closing device 6 is installed at the lower part of the bearing component 3. The opening and closing device 6 is used to control the tightness of the polishing assembly 5, so that the polishing block 503 can always be close to the outer wall of the crankshaft body that needs to be polished. A power connector is provided on one side of the housing 1 via a power cord.

[0028] like Figure 1 As shown, the assembly mechanism 101 includes a snap-fit ​​plate located inside the housing 1. A rotation drive device 2 is connected to the snap-fit ​​plate, and the snap-fit ​​plate is rotated and snapped onto the electric telescopic rod. The electric telescopic rod is fixed to the side wall of the housing 1. This allows for a more stable installation of the crankshaft body and enables its stable rotation. There are many existing methods for fixing the crankshaft body, which will not be elaborated on here.

[0029] like Figure 2 As shown, the drive device 2 includes a lead screw 201 rotatably mounted between the inner walls of the housing 1. One end of the lead screw 201 is additionally connected to a drive mechanism. A sliding block 202 is mounted on the lead screw 201. A lifting telescopic rod 203 is fixed on the side wall of the sliding block 202. The bottom end of the lifting telescopic rod 203 is fixed to the bearing component 3 through a connecting block. This enables the polishing assembly 5 to move precisely following the rotation of the crankshaft journal.

[0030] like Figure 3 and Figure 4 As shown, the bearing component 3 includes a receiving seat 301 located below the connecting block. A central rod 302 is fixed on the side wall of the receiving seat 301. The top of the adjusting plate 401 is rotatably engaged with the central rod 302 through a sleeve hole. A stop block is also required on the central rod 302. A filling ring is also required on the central rod 302 between the adjusting plates to better stabilize the position of the adjusting plates. This can provide stable support and a rotational foundation for the clamping plate mechanism 4.

[0031] like Figure 3As shown, there are two pairs of adjustment plates, located on both sides below the center rod 302. A polishing component 5 is installed at the bottom of one adjustment plate, and a deflection part is provided at the top of the other adjustment plate. The deflection part is used to offset the upper part of the adjustment plate towards the center, which facilitates installation and use. This allows for better and more reasonable installation of the adjustment plates on both sides. The opening and closing device 6 includes a bent plate 601 fixed to the bottom of the receiving seat 301. One end of the bent plate 601 extends into the drive bar hole 402, and an opening and closing telescopic rod 602 is fixed on the side wall of the bent plate 601. A locking post 603 is fixed to one end of the opening and closing telescopic rod 602, and one end of the locking post 603 extends into the drive bar hole 402. This facilitates control of the opening and closing degree of the adjustment plate.

[0032] like Figure 4 exchange and Figure 5 As shown, the polishing assembly 5 includes an arc-shaped tile 501. The outer wall of the arc-shaped tile 501 is rotatably snapped onto the bottom end of the adjusting plate via an ear plate and a snap-fit ​​post 603. An unfolding plate 502 is fixed to the bottom end of the adjusting plate. A polishing block 503 is embedded in the inner wall of the arc-shaped tile 501. A buffer spring 504 is connected between the side wall of the unfolding plate 502 and the outer wall of the arc-shaped tile 501. This can improve the polishing effect and buffer the impact force during the polishing process.

[0033] In use, the crankshaft body is first installed using the assembly mechanism 101. The clamping plate is moved to a suitable position by the electric telescopic rod, and the crankshaft body is clamped onto the clamping plate. Then, the drive device 2 is rotated to drive the clamping plate to rotate, thereby making the crankshaft body rotate stably and providing a stable foundation for subsequent polishing work.

[0034] When the crankshaft body is rotating for polishing, the crankshaft journal rotates continuously. At this time, the drive device 2 starts to work, and the lead screw 201 rotates under the drive mechanism, causing the sliding block 202 to move on the lead screw 201. At the same time, the lifting telescopic rod 203 extends and retracts as needed, and drives the bearing component 3 to move through the connecting block, so that the polishing component 5 moves precisely following the rotation of the crankshaft journal, ensuring a stable polishing effect.

[0035] The bearing seat 301 and the center rod 302 of the bearing component 3 provide stable support and rotation base for the clamping mechanism 4. The adjusting plate 401 rotates on the center rod 302 through the sleeve hole, and the stop block and filling ring further stabilize the position of the adjusting plate.

[0036] The opening and closing device 6 controls the opening and closing degree of the adjustment plate. When the opening and closing telescopic rod 602 extends or retracts, the locking post 603 moves in the drive bar hole 402, driving the adjustment plate to rotate around the central rod 302, thereby controlling the tightness of the polishing assembly 5, so that the polishing block 503 is always close to the outer wall of the crankshaft body that needs to be polished.

[0037] The arc-shaped tile 501 of the polishing assembly 5 is rotatably locked to the bottom of the adjusting plate via the ear plate and the locking post 603. When the polishing block 503 contacts the crankshaft body for polishing, the buffer spring 504 can buffer the impact force during the polishing process, thereby improving the final polishing effect.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A crankshaft polishing machine, characterized in that: The device includes a housing (1), on both sides of which are mounted assembly mechanisms (101) for mounting the crankshaft body. A drive device (2) is provided inside the housing (1). A bearing component (3) is mounted at the bottom of the drive device (2). A clamping mechanism (4) is rotatably mounted on the bearing component (3). The clamping mechanism (4) includes an adjusting plate (401). A sleeve hole is opened at the top of the adjusting plate (401). A drive bar hole (402) is opened on the side wall of the adjusting plate (401). A polishing component (5) is installed at the bottom of the adjusting plate (401). An opening and closing device (6) is installed at the lower part of the bearing component (3). A power connector is provided on one side of the housing (1) via a power cord.

2. The crankshaft polishing machine according to claim 1, characterized in that: The assembly mechanism (101) includes a snap-fit ​​plate located inside the housing (1), a rotation drive device (2) is connected to the snap-fit ​​plate, and the snap-fit ​​plate is rotatably snapped onto the electric telescopic rod, which is fixed to the side wall of the housing (1).

3. The crankshaft polishing machine according to claim 1, characterized in that: The drive device (2) includes a lead screw (201) rotatably mounted between the inner walls of the housing (1). One end of the lead screw (201) is additionally connected to a drive mechanism. A sliding block (202) is mounted on the lead screw (201). A lifting telescopic rod (203) is fixed on the side wall of the sliding block (202). The bottom end of the lifting telescopic rod (203) is fixed to the bearing component (3) through a connecting block.

4. The crankshaft polishing machine according to claim 3, characterized in that: The bearing component (3) includes a receiving seat (301) located below the connecting block. A central rod (302) is fixed on the side wall of the receiving seat (301). The top end of the adjusting plate (401) is rotatably engaged with the central rod (302) through the sleeve hole.

5. The crankshaft polishing machine according to claim 4, characterized in that: The adjustment plates are in pairs, located on both sides below the central rod (302). A polishing component (5) is installed at the bottom of one adjustment plate, and a deflection part is provided at the top of the other adjustment plate.

6. The crankshaft polishing machine according to claim 5, characterized in that: The opening and closing device (6) includes a bent plate (601) fixed to the bottom of the receiving seat (301), one end of the bent plate (601) extending between the drive bar holes (402), and an opening and closing telescopic rod (602) fixed on the side wall of the bent plate (601), one end of the opening and closing telescopic rod (602) being fixed with a snap-fit ​​post (603), and one end of the snap-fit ​​post (603) extending into the drive bar hole (402).

7. The crankshaft polishing machine according to claim 4, characterized in that: The polishing assembly (5) includes an arc-shaped tile (501). The outer wall of the arc-shaped tile (501) is rotatably fastened to the bottom end of the adjustment plate via an ear plate and a snap-fit ​​post (603). An unfolding plate (502) is fixed to the bottom end of the adjustment plate. A polishing block (503) is embedded on the inner wall of the arc-shaped tile (501). A buffer spring (504) is connected between the side wall of the unfolding plate (502) and the outer wall of the arc-shaped tile (501).

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