Grinding machine crankshaft machining counterweight device

Abstract

The utility model relates to a grinding machine crankshaft machining counterweight device which comprises a supporting disc, an installation disc is installed on the outer surface of the supporting disc through a rotating shaft, a plurality of inserting holes are coaxially formed in the outer surface of the supporting disc at equal angles, and a positioning mechanism matched with the inserting holes in an inserted mode is arranged on the outer surface of the installation disc. A mounting plate is mounted on the outer surface of the mounting disc through an adjusting mechanism, a plurality of supporting pieces are connected to the outer surface of the mounting plate, and a balancing weight is jointly arranged on the outer surfaces of the supporting pieces. The angle of the balancing weight can be adjusted when the angle of the balancing weight deviates from the crankshaft through the insertion matching of the positioning mechanism and the insertion hole, so that the operation of disassembling and assembling the crankshaft again and adjusting the angle of the crankshaft is avoided, and the operation portability is improved.

Description

Technical Field

[0001] This utility model relates to the field of crankshaft machining technology, specifically to a counterweight device for crankshaft machining on a grinding machine. Background Technology

[0002] The crankshaft is a key rotating component in an engine, made of carbon structural steel or ductile iron. When fitted with connecting rods, it converts the reciprocating motion of the connecting rods into cyclic rotational motion, providing power to the entire mechanical system. Its main journal is located on the cylinder block, the connecting rod journal connects to the big end bore of the connecting rod, and the small end bore connects to the cylinder piston. When machining the crankshaft on a grinding machine, the uneven centrifugal force generated during rotation due to the crankshaft's structure of multiple eccentric wheels affects machining accuracy.

[0003] Chinese patent CN214108820U discloses a counterweight device for machining crankshafts. The counterweight device rotates simultaneously with the crankshaft. Since the center of gravity of the counterweight device is not on the same horizontal line as the axis of the ejector shaft, the center of gravity of the crankshaft is adjusted to the axis of the ejector shaft when it rotates, thereby reducing the centrifugal force on the crankshaft when it rotates, reducing the centrifugal force resisted by the lathe, and improving the machining accuracy of the crankshaft.

[0004] In practical use, the counterweight needs to be placed on the side with less centrifugal force. However, in the above-mentioned patent, if the angle of the counterweight is not on the side with less centrifugal force after the crankshaft is fixed, the crankshaft needs to be disassembled and reassembled and its angle adjusted, which is quite inconvenient in actual operation. Utility Model Content

[0005] The purpose of this invention is to provide a counterweight device for crankshaft machining on a grinding machine, which effectively solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution.

[0007] A counterweight device for crankshaft machining on a grinding machine includes a support plate. A mounting plate is mounted on the outer surface of the support plate via a rotating shaft. Multiple insertion holes are coaxially and at equal angles on the outer surface of the support plate. A positioning mechanism is provided on the outer surface of the mounting plate to engage with the insertion holes. A mounting plate is mounted on the outer surface of the mounting plate via an adjustment mechanism. Multiple support members are connected to the outer surface of the mounting plate, and a counterweight is provided on the outer surface of all the support members.

[0008] Therefore, by using the positioning mechanism and the insertion hole, the angle of the counterweight can be adjusted when the angle of the counterweight deviates from that of the crankshaft. This avoids the need to disassemble and reassemble the crankshaft and adjust its angle, improving the portability of operation. Furthermore, by adjusting the position of the counterweight, it can be moved closer to or further away from the center of the mounting plate, thus allowing for fine adjustment of the centrifugal force generated by the counterweight and improving the stability of the crankshaft during rotation, thereby improving machining accuracy.

[0009] Furthermore, the positioning mechanism includes two telescopic rods installed on the outer surface of the mounting plate and on the side away from the counterweight. The ends of the two telescopic rods are jointly mounted with an arc-shaped plate. A first spring is sleeved on the outer surface of the telescopic rod. The two ends of the first spring are respectively connected to the mounting plate and the arc-shaped plate. An insertion rod is connected to the outer surface of the arc-shaped plate. The end of the insertion rod penetrates the interior of the mounting plate and is inserted into the insertion hole.

[0010] Furthermore, the adjustment mechanism includes a mounting groove formed on the outer surface of the mounting plate, two parallel limiting rods installed inside the mounting groove, and the mounting plate is slidably mounted on the two limiting rods. A first screw is rotatably connected inside the mounting groove, and the first screw passes through the interior of the mounting plate and is threadedly connected to it.

[0011] Furthermore, the support component includes a fixed rod, a connecting rod, and a second screw. The fixed rod is mounted on the outer surface of the mounting plate, and a nut is mounted on the outer surface of the second screw. A connecting groove is provided at one end of the fixed rod and one end of the connecting rod, and a connecting block is installed at the other end of the second screw and the other end of the connecting rod. The connecting blocks are fixed in the connecting grooves by a fixing mechanism.

[0012] Furthermore, the fixing mechanism includes a through hole opened in the inner wall of the connecting groove, an inner groove opened inside the connecting block, and a push rod installed inside the inner groove by a second spring.

[0013] Furthermore, grooves are provided on the outer surfaces of both the fixing rod and the connecting rod, and through holes are located inside the grooves.

[0014] Furthermore, the upper end of the first screw extends to the outside of the mounting plate and is fitted with an end head, the surface of which is provided with a hexagonal groove.

[0015] Furthermore, there are multiple insertion rods, and each insertion rod is matched with a socket.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows.

[0017] 1. This utility model, through the insertion and cooperation of the positioning mechanism and the insertion hole, can adjust the angle of the counterweight when the angle of the counterweight deviates from that of the crankshaft, thereby avoiding the operation of disassembling and reassembling the crankshaft and adjusting its angle, and improving the portability of operation.

[0018] 2. By adjusting the mechanism, the position of the counterweight can be adjusted to be closer to or further away from the center of the mounting plate, thus enabling fine adjustment of the centrifugal force generated by it, improving the stability of the crankshaft during rotation, and thus improving the machining accuracy. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the installation disk in this utility model;

[0021] Figure 3 This is a schematic diagram of the support plate in this utility model;

[0022] Figure 4 This is a schematic diagram of the positioning mechanism in this utility model;

[0023] Figure 5 This is a schematic diagram of the support component in this utility model;

[0024] Figure 6 for Figure 5 An enlarged diagram of A in the diagram.

[0025] In the diagram: 100, support plate; 101, rotating shaft; 102, mounting plate; 103, insertion hole; 104, mounting plate; 105, counterweight; 200, positioning mechanism; 201, arc plate; 202, insertion rod; 203, first spring; 300, adjusting mechanism; 301, mounting groove; 302, limiting rod; 303, first screw; 400, support component; 401, fixing rod; 402, connecting rod; 403, second screw; 404, nut; 405, connecting groove; 406, connecting block; 500, fixing mechanism; 501, through hole; 502, inner groove; 503, second spring; 504, top rod; 600, groove; 700, end; 701, hexagonal groove. 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] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to 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 the embodiments of this utility model.

[0028] In this embodiment of the invention, 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 indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0029] Please see Figures 1-6 This utility model provides a counterweight device for crankshaft machining on a grinding machine, including a support plate 100. A mounting plate 102 is mounted on the outer surface of the support plate 100 via a rotating shaft 101. Multiple insertion holes 103 are coaxially and at equal angles on the outer surface of the support plate 100. A positioning mechanism 200 is provided on the outer surface of the mounting plate 102 to engage with the insertion holes 103. A mounting plate 104 is mounted on the outer surface of the mounting plate 102 via an adjustment mechanism 300. Multiple support members 400 are connected to the outer surface of the mounting plate 104, and a counterweight block 105 is commonly provided on the outer surface of the multiple support members 400.

[0030] In use, a suitable number of counterweights 105 are installed on the support 400. When the angle of the counterweights 105 deviates from that of the crankshaft, the positioning mechanism 200 can be released from the insertion of the socket 103 to restore the rotation capability of the mounting plate 102. Then, the mounting plate 102 is rotated to adjust the angle of the counterweights 105 so that they are on the side with less centrifugal force on the crankshaft. Finally, the positioning mechanism 200 and the socket 103 are used to fix the mounting plate 102.

[0031] The position of the mounting plate 104 can then be adjusted by the adjustment mechanism 300 to make it closer to or further away from the center of the mounting plate 102. This allows for fine-tuning of the centrifugal force generated during crankshaft rotation, thereby improving the stability of the crankshaft during rotation and enhancing machining accuracy.

[0032] Preferably, the positioning mechanism 200 includes two telescopic rods installed on the outer surface of the mounting plate 102 and on the side away from the counterweight 105. The ends of the two telescopic rods are jointly installed with an arc-shaped plate 201. A first spring 203 is sleeved on the outer surface of the telescopic rod. The two ends of the first spring 203 are respectively connected to the mounting plate 102 and the arc-shaped plate 201. An insertion rod 202 is connected to the outer surface of the arc-shaped plate 201. The end of the insertion rod 202 penetrates the interior of the mounting plate 102 and is inserted into the insertion hole 103.

[0033] When it is necessary to adjust the angle of the counterweight 105, the arc plate 201 can be pulled outward to drive the insertion rod 202 out of the insertion hole 103. At this time, the fixing of the mounting plate 102 is released. After the angle of the counterweight 105 is adjusted by rotating the mounting plate 102, the insertion rod 202 can be reinserted into the insertion hole 103 and fixed. Moreover, through the elastic force of the first spring 203, it applies a pulling force to the arc plate 201 in the direction of the support plate 100, thus ensuring that the insertion rod 202 is stably inserted into the insertion hole 103 and preventing it from coming off during rotation.

[0034] Preferably, the adjustment mechanism 300 includes a mounting groove 301 formed on the outer surface of the mounting plate 102. Two parallel limiting rods 302 are installed inside the mounting groove 301, and the mounting plate 104 is slidably mounted on the two limiting rods 302. A first screw 303 is rotatably connected inside the mounting groove 301. The first screw 303 passes through the interior of the mounting plate 104 and is threadedly connected to it.

[0035] When it is necessary to adjust the position of the mounting plate 104, the first screw 303 can be rotated. Since the mounting plate 104 is limited by the two limiting rods 302, it can be driven to rise and fall under the drive of the threaded connection.

[0036] Preferably, the support member 400 includes a fixing rod 401, a connecting rod 402, and a second screw 403. The fixing rod 401 is mounted on the outer surface of the mounting plate 104, and a nut 404 is mounted on the outer surface of the second screw 403. A connecting groove 405 is provided at one end of the fixing rod 401 and one end of the connecting rod 402. A connecting block 406 is installed at the other end of the second screw 403 and the other end of the connecting rod 402. The connecting block 406 is fixed in the connecting groove 405 by a fixing mechanism 500.

[0037] By splicing an appropriate number of connecting rods 402 between the fixed rod 401 and the second screw 403, an appropriate number of counterweights 105 can be installed on its surface, which can flexibly adjust the overall length of the support 400 and avoid the support 400 being too long, which could easily cause scratches or collisions during rotation.

[0038] Preferably, the fixing mechanism 500 includes a through hole 501 formed in the inner wall of the connecting groove 405, and an inner groove 502 formed inside the connecting block 406. A push rod 504 is installed inside the inner groove 502 by a second spring 503.

[0039] When the connecting block 406 is inserted into the connecting groove 405, under the elastic force of the second spring 503, the push rod 504 can be pushed out from the through hole 501, thus achieving the purpose of quick splicing between the fixing rod 401, the connecting rod 402 and the second screw 403, and easy disassembly.

[0040] Preferably, the outer surfaces of both the fixing rod 401 and the connecting rod 402 are provided with grooves 600, and the through holes 501 are provided inside the grooves 600.

[0041] Since the through hole 501 is set in the groove 600, after the fixing rod 401, the connecting rod 402 and the second screw 403 are spliced ​​together, the end of the top rod 504 does not exceed the outer surface of the fixing rod 401 or the connecting rod 402, so that the counterweight 105 can pass smoothly through its surface.

[0042] Preferably, the upper end of the first screw 303 extends to the outside of the mounting plate 102 and is fitted with an end head 700, the surface of which is provided with a hexagonal groove 701.

[0043] With the hexagonal slot 701, a hexagonal wrench can be used to rotate the first screw 303.

[0044] Preferably, multiple insertion rods 202 are provided, and each insertion rod 202 is matched with the insertion hole 103.

[0045] The arrangement of multiple inserts 202 increases the connection strength between the support plate 100 and the mounting plate 102, thereby improving structural stability.

[0046] 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.

Claims

1. A counterweight device for machining crankshafts on a grinding machine, comprising a support plate (100), characterized in that: The outer surface of the support plate (100) is fitted with an mounting plate (102) via a rotating shaft (101). The outer surface of the support plate (100) is provided with a plurality of insertion holes (103) at equal angles to the coaxial center. The outer surface of the mounting plate (102) is provided with a positioning mechanism (200) that engages with the insertion holes (103). The outer surface of the mounting plate (102) is fitted with a mounting plate (104) via an adjustment mechanism (300). The outer surface of the mounting plate (104) is connected to a plurality of support members (400), and the outer surfaces of the plurality of support members (400) are provided with a counterweight (105).

2. The counterweight device for machining crankshafts on a grinding machine according to claim 1, characterized in that: The positioning mechanism (200) includes two telescopic rods installed on the outer surface of the mounting plate (102) and away from the counterweight (105). The ends of the two telescopic rods are jointly mounted with an arc plate (201). A first spring (203) is sleeved on the outer surface of the telescopic rod. The two ends of the first spring (203) are respectively connected to the mounting plate (102) and the arc plate (201). An insertion rod (202) is connected to the outer surface of the arc plate (201). The end of the insertion rod (202) penetrates the interior of the mounting plate (102) and is inserted into the insertion hole (103).

3. The counterweight device for machining crankshafts on a grinding machine according to claim 1, characterized in that: The adjustment mechanism (300) includes a mounting groove (301) formed on the outer surface of the mounting plate (102). Two parallel limiting rods (302) are installed inside the mounting groove (301), and the mounting plate (104) is slidably mounted on the two limiting rods (302). A first screw (303) is rotatably connected inside the mounting groove (301). The first screw (303) passes through the interior of the mounting plate (104) and is threadedly connected to it.

4. The counterweight device for machining crankshafts on a grinding machine according to claim 2, characterized in that: The support member (400) includes a fixing rod (401), a connecting rod (402), and a second screw (403). The fixing rod (401) is installed on the outer surface of the mounting plate (104), and a nut (404) is installed on the outer surface of the second screw (403). The end of the fixing rod (401) and one end of the connecting rod (402) are provided with connecting grooves (405), and the end of the second screw (403) and the other end of the connecting rod (402) are provided with connecting blocks (406). The connecting blocks (406) are fixed in the connecting grooves (405) by the fixing mechanism (500).

5. The counterweight device for machining crankshafts on a grinding machine according to claim 4, characterized in that: The fixing mechanism (500) includes a through hole (501) opened in the inner wall of the connecting groove (405), and an inner groove (502) is opened inside the connecting block (406). A top rod (504) is installed inside the inner groove (502) by a second spring (503).

6. The counterweight device for machining crankshafts on a grinding machine according to claim 5, characterized in that: The outer surfaces of both the fixing rod (401) and the connecting rod (402) are provided with grooves (600), and the through hole (501) is located inside the grooves (600).

7. The counterweight device for machining crankshafts on a grinding machine according to claim 3, characterized in that: The upper end of the first screw (303) extends through to the outside of the mounting plate (102) and is fitted with an end head (700), the surface of which is provided with a hexagonal groove (701).

8. A counterweight device for machining crankshafts on a grinding machine according to claim 2, characterized in that: Multiple insertion rods (202) are provided, and each insertion rod (202) is matched with the insertion hole (103).

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