Groove milling tool for crankshaft

Abstract

The utility model relates to the technical field of machining, in particular to a crankshaft groove milling tool which comprises a bottom plate, a clamping device used for clamping a crankshaft and a supporting device used for supporting the crankshaft are arranged on the bottom plate, and a scrap collecting device is further arranged on the bottom plate. The waste chip collecting device comprises a collecting box arranged on the bottom plate and an absorbing assembly arranged in the collecting box, a feeding port is formed in one side of the absorbing assembly, a discharging port is formed in the other side of the absorbing assembly, a channel communicated with the feeding port and the discharging port is formed in the absorbing assembly, the discharging port is connected with a negative pressure pipe, and the negative pressure pipe is connected with the absorbing assembly. The negative pressure pipe is connected with a negative pressure device, the absorbing assembly comprises an absorbing plate arranged in the collecting box, the feeding port is located in the side edge of the absorbing plate, and the discharging port is located in one end of the absorbing plate; under the action of negative pressure, waste chips can be effectively absorbed and collected through the feeding port, the channel, the discharging port and the negative pressure pipe, automatic removal of the waste chips is achieved, efficiency is high, and convenience is achieved.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a milling fixture for crankshafts. Background Technology

[0002] The crankshaft of a vehicle engine requires machining of neck planes and keyways at both ends for assembling parts. The machining accuracy of these parts is crucial to the crankshaft's performance. Before machining, the crankshaft needs to be clamped and fixed using tooling.

[0003] For example, Chinese utility model patent (CN221818045U) discloses a crankshaft keyway milling fixture, which can completely limit the crankshaft, improve the machining accuracy and efficiency of the crankshaft keyway, facilitate crankshaft loading and unloading, and has good versatility, with each oil passage occupying less space above the base plate.

[0004] However, this type of crankshaft keyway milling fixture has at least the following drawbacks: it is not equipped with a waste chip collection device, because a certain amount of waste chips are generated during the crankshaft keyway machining process. Cleaning these chips usually requires the operator to use an air gun, a process that is cumbersome and time-consuming. Utility Model Content

[0005] This utility model discloses a crankshaft milling fixture, which mainly solves the problem that the current crankshaft milling keyway fixtures are not equipped with a waste chip collection device, making the waste chip cleaning process cumbersome and time-consuming.

[0006] To achieve the aforementioned objective, this utility model provides a crankshaft milling fixture, comprising a base plate, a clamping device for holding the crankshaft and a support device for supporting the crankshaft, and a waste chip collection device. The waste chip collection device includes a collection box disposed on the base plate and an absorption component disposed within the collection box. The absorption component has an inlet on one side and an outlet on the other side. The absorption component has a channel communicating with the inlet and outlet. The outlet is connected to a negative pressure pipe, which is connected to a negative pressure device. The absorption component includes an absorption plate disposed within the collection box, with the inlet located on the side of the absorption plate and the outlet located at one end of the absorption plate.

[0007] Furthermore, the crankshaft is provided with machined keyways one and two, and two waste collection devices are provided, located below keyways one and two.

[0008] Furthermore, the negative pressure pipes of the two waste collection devices are interconnected.

[0009] Furthermore, a connecting member is provided on one side of the collection box, which communicates with the discharge port. The negative pressure pipe is connected to the connecting member. A through groove is provided on one side of the collection box, through which the connecting member passes and can slide within the groove.

[0010] Furthermore, baffles fixedly connected to the connecting member are provided on both sides of the slide groove, and the two baffles cover the openings on both sides of the slide groove.

[0011] Furthermore, the surface of the absorption plate is provided with a chip removal device, which includes a crossbar on the surface of the absorption plate and two inclined plates on both sides of the crossbar. The top ends of the two inclined plates are connected, and the other end is inclined downward.

[0012] Furthermore, the crankshaft includes a crankshaft section, a long shaft section and a short shaft section disposed on both sides of the crankshaft section, and the support device includes a first support member disposed on the base plate surface for supporting the crankshaft section, a second support member for supporting the long shaft section and a third support member for supporting the short shaft section.

[0013] Furthermore, both the second and third support members are provided with connectors that can be detachably connected to the collection box.

[0014] Furthermore, the collection box has a connecting groove on the side near the connector, and the connector has a connecting block that can slide within the connecting groove.

[0015] The technical solution provided by this utility model has at least the following technical effects:

[0016] The crankshaft milling fixture disclosed in this application uses a support device to secure the crankshaft to a base plate, and then uses a clamping device to fix the crankshaft. During the keyway machining of the crankshaft, a waste chip collection device is provided on the base plate, and the waste chips generated during the machining process will fall into the collection box. At the same time, under the action of negative pressure, the waste chips are effectively absorbed and collected through the feed port, channel, discharge port and negative pressure pipe, realizing automatic waste chip removal, which is highly efficient and convenient. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the crankshaft milling fixture according to an embodiment of the present invention;

[0019] Figure 2This is a partial cross-sectional schematic diagram of the waste collection device according to an embodiment of the present invention;

[0020] Figure 3 This is a cross-sectional view of the connection structure between the absorption plate and the connecting member in an embodiment of this utility model;

[0021] Figure 4 This is a cross-sectional view of the connection structure between the connecting member and the collection box in an embodiment of this utility model;

[0022] Figure 5 This is a cross-sectional view of the absorption plate in an embodiment of the present invention.

[0023] Explanation of main reference numerals in the attached drawings: 1. Base plate; 2. Support device; 21. Second support member; 22. First support member; 23. Third support member; 3. Crankshaft; 31. Long shaft section; 311. Keyway 1; 32. Crankshaft section; 33. Short shaft section; 331. Keyway 2; 4. Waste chip collection device; 41. Collection box; 42. Absorption plate; 421. Feed inlet; 422. Discharge outlet; 423. Channel; 5. Negative pressure pipe; 6. Connecting component; 7. Slide groove; 8. Baffle; 9. Chip removal device; 91. Crossbar; 92. Inclined plate; 10. Connecting component; 11. Connecting groove. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of the 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 intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0025] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model 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 utility model.

[0026] like Figure 1 , Figure 2As shown, this embodiment discloses a milling fixture for crankshafts, including a base plate 1. The base plate 1 is provided with a clamping device for clamping a crankshaft 3 and a support device 2 for supporting the crankshaft 3. The crankshaft 3 includes a crankshaft section 32, a long shaft section 31 and a short shaft section 33 disposed on both sides of the crankshaft section 32. The support device 2 includes a first support member 22 disposed on the surface of the base plate 1 for supporting the crankshaft 3, a second support member 21 for supporting the long shaft section 31, and a third support member 23 for supporting the short shaft section 33.

[0027] Keyway 1 311 needs to be machined on the long shaft section 31, and keyway 2 331 needs to be machined on the short shaft section 33. To address the waste debris generated during the machining of keyway 1 311 and keyway 2 331, a waste debris collection device 4 is also provided on the base plate 1. Two waste debris collection devices 4 are provided, one for collecting waste debris from keyway 1 311 and the other for keyway 2 331. The waste debris collection device 4 includes a collection box 41 mounted on the base plate 1 and an absorption assembly disposed within the collection box 41, such as... Figure 3 As shown, the absorption assembly has an inlet 421 on one side and an outlet 422 on the other side. The absorption assembly contains a channel 423 communicating with both the inlet 421 and the outlet 422. The outlet 422 is connected to a negative pressure pipe 5, which is connected to a negative pressure device. The negative pressure device uses negative pressure to discharge and collect the generated waste debris from the inlet 421, through the channel 423, the outlet 422, and the negative pressure pipe 5. The negative pressure pipes 5 of the two waste debris collection devices 4 are interconnected for synchronous absorption.

[0028] The absorption assembly includes an absorption plate 42 disposed within a collection box 41. An inlet 421 is located on the side of the absorption plate 42, and an outlet 422 is located at one end of the absorption plate 42. The width of the absorption plate 42 is adapted to the width of the collection box 41. An inlet 421 could also be provided on the top of the absorption plate 42; however, to maintain stable negative pressure suction, in this embodiment, inlet ports 421 are only provided on both sides of the absorption plate 42, and the bottom of the inlet ports 421 contacts the bottom surface of the collection box 41. This allows for sufficient absorption and collection of waste debris on both sides of the absorption plate 42. To prevent waste debris from accumulating on the surface of the absorption plate 42, such as... Figure 5 As shown, a chip removal device 9 is provided on the surface of the absorption plate 42. The chip removal device 9 includes a crossbar 91 disposed on the surface of the absorption plate 42 and two inclined plates 92 disposed on both sides of the crossbar 91. The top ends of the two inclined plates 92 are connected, and the other ends are inclined downward. Under the action of the two inclined plates, the waste chips on the top of the absorption plate 42 can be discharged into the collection box 41 and absorbed and collected.

[0029] like Figure 3As shown, a connecting member 6 is provided on one side of the collection box 41, communicating with the discharge port 422. The negative pressure pipe 5 is connected to the connecting member 6. In addition, a through groove 7 is provided on the same side of the collection box 41, through which the connecting member 6 can pass and slide. By sliding the connecting member 6 in the groove 7, the left and right positions of the absorption plate 42 can be adjusted, thereby increasing the absorbable area of ​​the absorption plate 42 and ensuring more thorough absorption of waste. To prevent waste from entering the groove 7, baffles 8 are fixedly connected to the connecting member 6 on both sides of the groove 7. The baffles 8 cover the openings on both sides of the groove 7, and their area is significantly larger than the opening size on both sides of the groove 7. Therefore, during the sliding of the connecting member 6, the groove 7 can remain closed, effectively preventing the intrusion of waste.

[0030] like Figure 1 As shown, to facilitate the assembly, disassembly, and position adjustment of the collection box 41, both the second support member 21 and the third support member 23 are equipped with connectors 10 that can be detachably connected to the collection box 41. The collection box 41 has a connecting groove 11 on the side near the connector 10, and the connector 10 is equipped with a connecting block that can slide within the connecting groove 11. The connecting block adopts a T-shaped slider structure, while the connecting groove 11 has a T-shaped sliding groove structure. Through the sliding mechanism between the connecting block and the connecting groove 11, the front and rear positions of the collection box 41 can be precisely adjusted to adapt to different collection needs. Furthermore, the collection box 41 can also be directly separated from the connecting block for easy cleaning.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A milling fixture for a crankshaft, comprising a base plate (1), wherein the base plate (1) is provided with a clamping device for clamping a crankshaft (3) and a support device (2) for supporting the crankshaft (3), characterized in that, The base plate (1) is also provided with a waste collection device (4). The waste collection device (4) includes a collection box (41) provided on the base plate (1) and an absorption component provided in the collection box (41). The absorption component has an inlet (421) on one side and an outlet (422) on the other side. The absorption component has a channel (423) communicating with the inlet (421) and the outlet (422). The outlet (422) is connected to a negative pressure pipe (5). The negative pressure pipe (5) is connected to a negative pressure device. The absorption component includes an absorption plate (42) provided in the collection box (41). The inlet (421) is located on the side of the absorption plate (42), and the outlet (422) is located at one end of the absorption plate (42).

2. The crankshaft milling fixture according to claim 1, characterized in that, The crankshaft (3) is provided with a machined keyway one (311) and a keyway two (331), and two waste collection devices (4) are provided, located below the keyway one (311) and the keyway two (331).

3. The crankshaft milling fixture according to claim 2, characterized in that, The negative pressure pipes (5) of the two waste collection devices (4) are connected to each other.

4. The milling fixture for crankshafts according to claim 1, characterized in that, The collection box (41) is provided with a connecting member (6) that communicates with the discharge port (422) on one side. The negative pressure pipe (5) is connected to the connecting member (6). The collection box (41) is provided with a through groove (7) on one side. The connecting member (6) passes through the groove (7) and can slide in the groove (7).

5. The crankshaft milling fixture according to claim 4, characterized in that, The slide groove (7) is provided with baffles (8) fixedly connected to the connecting member (6) on both sides, and the two baffles (8) cover the openings on both sides of the slide groove (7).

6. The crankshaft milling fixture according to claim 1, characterized in that, The surface of the absorption plate (42) is provided with a chip removal device (9). The chip removal device (9) includes a crossbar (91) provided on the surface of the absorption plate (42) and two inclined plates (92) provided on both sides of the crossbar (91). The top ends of the two inclined plates (92) are connected, and the other end is inclined downward.

7. The milling fixture for crankshafts according to claim 1, characterized in that, The crankshaft (3) includes a crankshaft section (32), a long shaft section (31) and a short shaft section (33) disposed on both sides of the crankshaft section (32), and the support device (2) includes a first support member (22) disposed on the surface of the base plate (1) for supporting the crankshaft section (32), a second support member (21) for supporting the long shaft section (31), and a third support member (23) for supporting the short shaft section (33).

8. The milling fixture for crankshafts according to claim 7, characterized in that, Both the second support member (21) and the third support member (23) are provided with connectors (10) that can be detachably connected to the collection box (41).

9. The milling fixture for crankshafts according to claim 8, characterized in that, The collection box (41) is provided with a connecting groove (11) on the side near the connector (10), and a connecting block is provided on the connector (10), which can slide in the connecting groove (11).

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