A crankcase side processing fixture

Abstract

This utility model discloses a crankshaft housing side-side machining fixture, which includes a rotary worktable and a machining plate fixedly disposed at the rotating end of the rotary worktable. The machining plate is provided with a clamping device and at least one positioning seat, the positioning seat having a positioning surface. The clamping device includes a driving member disposed on the machining plate, a support rod disposed on the driving end of the driving member, and a pressure plate detachably connected to the support rod. The driving member drives the support rod to move along its axis, the moving direction of the support rod being perpendicular to the machining plate. The pressure plate is located at the end of the support rod away from the machining plate. The support rod passes through and supports the workpiece, and the pressure plate presses the workpiece against the machining plate, with the workpiece abutting against the positioning surface. This utility model can improve the clamping and fixing efficiency and reduce costs during crankshaft housing machining.

Description

Technical Field

[0001] This utility model relates to the technical field of fixtures, and in particular to a crankshaft housing side processing fixture. Background Technology

[0002] The crankcase is an important component of an engine, primarily used to mount the crankshaft and provide the space for its operation. The crankcase is typically divided into two parts: the upper crankcase and the lower crankcase. The upper crankcase is cast integrally with the cylinder block, while the lower crankcase stores lubricating oil and seals the upper crankcase.

[0003] Before the upper and lower crankcases are assembled, the sides of the crankcases need to be machined by drilling or tapping, and machining is usually required in three directions. During machining, fixtures are needed to clamp and fix the crankcases.

[0004] Typically, machining a workpiece (crankshaft housing) on ​​three machining centers requires designing a set of tooling for each of the three machining centers, and then installing the three machining centers sequentially onto the corresponding tooling for clamping and fixing. This requires workers to assemble and disassemble the machine three times during the machining of the engine housing, resulting in low machine tool utilization, high labor time costs, and the high cost of multiple sets of tooling, which is detrimental to market competitiveness. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a crankcase side process fixture, which can improve the clamping and fixing efficiency and reduce the cost during crankcase processing.

[0006] To solve the above-mentioned technical problems, the crankcase side process fixture provided by this utility model adopts the following technical solution:

[0007] A crankshaft housing side-side machining fixture includes a rotary table and a machining plate fixedly disposed at the rotating end of the rotary table. The machining plate is provided with a clamping device and at least one positioning seat, the positioning seat having a positioning surface. The clamping device includes a driving member disposed on the machining plate, a support rod disposed on the driving end of the driving member, and a pressure plate detachably connected to the support rod. The driving member is used to drive the support rod to move along its axis, the moving direction of the support rod being perpendicular to the machining plate. The pressure plate is located at the end of the support rod away from the machining plate. The support rod is used to pass through and support the workpiece, and the pressure plate is used to press the workpiece against the machining plate, the workpiece abutting against the positioning surface.

[0008] By adopting the above technical solution, the crankshaft housing is fitted onto the support rod, and then the pressure plate is installed on the support rod. A drive mechanism moves the support rod towards the machining plate, which in turn moves the pressure plate towards the machining plate until the crankshaft housing abuts against the positioning surface. The crankshaft housing is then clamped and fixed between the pressure plate and the positioning seat. After clamping, the machine tool is instructed by program commands to machine one of the machining centers of the crankshaft housing. After machining, the program commands cause the rotary table to rotate the machining plate by an angle, and the machine tool machines the other machining center of the crankshaft housing, and so on. After all machining centers of the crankshaft housing are completed, the drive mechanism moves the support rod away from the machining plate, the pressure plate is removed, the crankshaft housing is taken off, and the next crankshaft housing to be machined is reinstalled, starting the next work cycle.

[0009] The crankshaft housing is supported by gravity using support rods, and then clamped and fixed relative to the processing plate by pressure plates. The processing plate is rotated by a rotary table, enabling the crankshaft housing to be processed in three directions at once. This eliminates multiple disassembly and assembly processes and multiple sets of tooling, thereby improving the clamping and fixing efficiency during crankshaft housing processing, and greatly reducing costs and increasing efficiency. Furthermore, this application uses only support rods and pressure plates to clamp the crankshaft housing, rather than multiple pressure plates and fixtures, which can clamp and fix crankshaft housings of more models and sizes, thereby improving the adaptability and practicality of tooling fixtures.

[0010] Optionally, the end of the support rod away from the processing plate is detachably connected to a limiting seat, the pressure plate has a snap-fit ​​groove, the support rod is snapped into the snap-fit ​​groove, and the pressure plate abuts against the limiting seat.

[0011] By adopting the above technical solution, during installation, the crankcase is first fitted onto the support rod, then the limiting seat is installed on the support rod, and then the pressure plate and the support rod are snapped together. By snapping the pressure plate and the support rod together, and then limiting and fixing the pressure plate by the limiting seat, the pressure plate can stably press the crankcase.

[0012] Optionally, the opposite sides of the pressure plate are recessed inward.

[0013] By adopting the above technical solution, it is easier for operators to pick up and remove the pressure plate, thus improving convenience.

[0014] Optionally, the support rod has a limiting groove, the limiting groove is close to the limiting seat, and the pressure plate is engaged in the limiting groove.

[0015] By adopting the above technical solution, the limiting groove can restrict the movement of the pressure plate along the axis of the support rod to prevent the pressure plate from sliding everywhere, thereby further improving the stability of the pressure plate in clamping and fixing the crankshaft housing.

[0016] Optionally, the processing plate is provided with at least one positioning pin, and the workpiece has a pin hole corresponding to the positioning pin.

[0017] By adopting the above technical solution, the locating pin can ensure that the relative position between the crankcase and the machining plate is correct and accurate after assembly; and the locating pin can prevent the crankcase from moving or shifting relative to each other during machining, thus ensuring the stability of machining.

[0018] Optionally, the processing plate is equipped with a chip blowing device, which is used to remove dust, debris and moisture from the positioning surface.

[0019] By adopting the above technical solution, before assembling the crankcase onto the machining plate, the dust, debris and moisture on the positioning surface are removed by a chip blowing device to avoid the crankcase being contaminated with dust, debris or moisture after machining, which would affect the subsequent assembly process.

[0020] Optionally, a support plate is fixedly provided on the lower edge of the processing plate.

[0021] By adopting the above technical solution, the crankcase is usually placed vertically for processing. The support plate can support the lower end of the crankcase, avoiding the situation where the crankcase is only supported by the support rod, which would shorten its service life, thereby improving the stability of clamping and fixing the crankcase.

[0022] Optionally, the processing plate is fixedly provided with lifting rings.

[0023] By adopting the above technical solution, it is easier to hoist and transfer the processing plate, thus improving the convenience of moving and assembling the processing plate.

[0024] In summary, this utility model has at least one of the following beneficial technical effects:

[0025] 1. The crankcase is supported by gravity using a support rod, and then the crankcase is pressed and fixed relative to the processing plate using a pressure plate. The processing plate is rotated by a rotary table, which enables the crankcase to be processed in three directions at once. This eliminates multiple disassembly and assembly processes and multiple sets of tooling, thereby improving the crankcase processing and clamping efficiency, greatly reducing costs, and increasing efficiency.

[0026] 2. This application uses only support rods and pressure plates to clamp the crankshaft housing, rather than multiple pressure plates and clamps, which can clamp and fix crankshaft housings of more models and sizes, thereby improving the adaptability and practicality of tooling fixtures;

[0027] 3. Locating pins ensure the correct and precise relative position between the crankcase and the machining plate after assembly; furthermore, locating pins prevent relative movement or displacement of the crankcase during machining, ensuring machining stability. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the crankshaft housing side process fixture of this utility model.

[0029] Figure 2 This is a schematic diagram of the crankshaft housing side process fixture after removing the pressure plate.

[0030] Figure 3 This is a schematic diagram of the assembly of the crankshaft housing side process fixture and the crankshaft housing of this utility model.

[0031] Explanation of reference numerals in the attached drawings: 1. Rotary worktable; 2. Processing plate; 3. Clamping device; 31. Driving component; 32. Support rod; 321. Limiting groove; 33. Pressure plate; 331. Snap-fit ​​groove; 34. Limiting seat; 4. Positioning seat; 5. Positioning pin; 6. Chip blowing device; 7. Support plate; 8. Lifting ring; 9. Crankshaft housing. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-3 The present invention will be described in further detail below.

[0033] This utility model discloses a crankcase side processing fixture. (Refer to...) Figure 1 The crankshaft housing side process fixture includes a rotary table 1 and a machining plate 2. The rotary table 1 is a four-axis rotary table, and the machining plate 2 is vertically and bolted to the drive shaft of the rotary table 1. A clamping device 3 is provided at the center of the machining plate 2, which is used to clamp and fix the crankshaft housing 9 to the machining plate 2.

[0034] Reference Figure 1 At least one positioning seat 4 is provided on the side of the processing plate 2 away from the four-axis rotary table. In this embodiment, five positioning seats 4 are provided, which are arranged at intervals around the pressing device 3. The positioning seats 4 are provided with positioning surfaces, which are parallel to the processing plate 2. The pressing device 3 is used to press the crankshaft housing 9 tightly against the positioning surfaces.

[0035] Reference Figure 1 Each of the five positioning seats 4 is equipped with a chip blowing device 6. The chip blowing device 6 includes an air nozzle and a compressed air source. The air nozzle is fixed to the machining plate 2, and the compressed air source is connected to the air inlet of the air nozzle. The air nozzle is aligned with the positioning surface. Before assembling the crankcase 9 onto the machining plate 2, the chip blowing device 6 is used to remove dust, debris, and moisture from the positioning surface to prevent the machined crankcase 9 from being contaminated with dust, debris, or moisture, which could affect the subsequent assembly process.

[0036] Reference Figure 1 and Figure 2 The clamping device 3 includes a driving component 31, a support rod 32, and a pressure plate 33. The driving component 31 is fixedly installed on the processing plate 2. The driving component 31 can be a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder. In this embodiment, the driving component 31 is an electric cylinder. The support rod 32 is fixedly connected to the driving end of the driving component 31. The axis and movement direction of the support rod 32 are perpendicular to the processing plate 2. A limit seat 34 is bolted to the end of the support rod 32 away from the processing plate 2. The limit seat 34 is detachable from the support rod 32. The pressure plate 33 has a U-shaped snap-fit ​​groove 331. The support rod 32 is snapped into the snap-fit ​​groove 331, and the pressure plate 33 abuts against the limit seat 34. The opposite side edges of the pressure plate 33 are recessed inward to facilitate the operator's handling of the pressure plate 33 and improve convenience.

[0037] Reference Figure 3 During installation, the crankcase 9 is first fitted onto the support rod 32, then the limiting seat 34 is installed on the support rod 32, and then the pressure plate 33 and the support rod 32 are snapped together. By snapping the pressure plate 33 and the support rod 32 together, and then limiting and fixing the pressure plate 33 by the limiting seat 34, the pressure plate 33 can stably press the crankcase 9.

[0038] The drive unit 31 moves the support rod 32 toward the machining plate 2, which in turn moves the pressure plate 33 toward the machining plate 2 until the crankshaft housing 9 abuts against the positioning surface. The crankshaft housing 9 is then clamped and fixed between the pressure plate 33 and the positioning seat 4. After clamping, the machine tool is instructed by program commands to process one of the machining centers of the crankshaft housing 9. After processing, the program commands cause the rotary table 1 to rotate the machining plate 2 by an angle, and the machine tool processes the other machining center of the crankshaft housing 9, and so on. After all the machining centers of the crankshaft housing 9 are processed, the drive unit 31 moves the support rod 32 away from the machining plate 2, the pressure plate 33 is removed, the crankshaft housing 9 is taken off, and the next crankshaft housing 9 to be processed is reinstalled to start the next work cycle.

[0039] The crankshaft housing 9 is supported by gravity using support rod 32, and then the crankshaft housing 9 is pressed and fixed relative to the processing plate 2 by pressure plate 33. The processing plate 2 is rotated by rotating worktable 1, so that the crankshaft housing 9 can be processed in three directions at one time. This eliminates multiple disassembly and assembly processes and multiple sets of tooling, thereby improving the processing and clamping efficiency of crankshaft housing 9 and greatly reducing costs and improving efficiency. Furthermore, this application only uses support rod 32 and pressure plate 33 to clamp the crankshaft housing 9, rather than using multiple pressure plates 33 and fixtures, which can clamp and fix crankshaft housing 9 of more models and sizes, thereby improving the adaptability and practicality of tooling fixtures.

[0040] Reference Figure 2 The support rod 32 has a limiting groove 321, which is close to the limiting seat 34. The pressure plate 33 is engaged in the limiting groove 321. The limiting groove 321 can restrict the movement of the pressure plate 33 along the axis of the support rod 32 to prevent the pressure plate 33 from sliding around, thereby further improving the stability of the pressure plate 33 in clamping and fixing the crankshaft housing 9.

[0041] Reference Figure 1 To ensure the accuracy of positioning the crankshaft housing 9, at least one positioning pin 5 is provided on the machining plate 2. In this embodiment, there are two positioning pins 5, and the crankshaft housing 9 has corresponding pin holes. The positioning pins 5 ensure that the relative position between the crankshaft housing 9 and the machining plate 2 is correct and accurate after assembly; furthermore, the positioning pins 5 can prevent the crankshaft housing 9 from relative movement or displacement during machining, ensuring machining stability.

[0042] Reference Figure 1 and Figure 2 A support plate 7 is fixedly installed on the lower edge of the processing plate 2. The support plate 7 has an L-shaped plate structure, with one side of the support plate 7 fixedly connected to the processing plate 2 and the other side perpendicular to the processing plate 2. The crankshaft housing 9 is usually placed vertically for processing. The support plate 7 can support the lower end of the crankshaft housing 9, avoiding the situation where the crankshaft housing 9 is only supported by the support rod 32, which would shorten its service life, thereby improving the stability of clamping and fixing the crankshaft housing 9.

[0043] Reference Figure 1 and Figure 2 The processing plate 2 is fixedly equipped with two lifting rings 8 to facilitate the hoisting and transfer of the processing plate 2, thereby improving the convenience of moving and assembling the processing plate 2.

[0044] The implementation principle of the crankshaft housing side process fixture of this utility model embodiment is as follows: during installation, the crankshaft housing 9 is first sleeved on the support rod 32, then the limiting seat 34 is installed on the support rod 32, and then the pressure plate 33 and the support rod 32 are snapped together. By snapping the pressure plate 33 and the support rod 32 together, and then limiting and fixing the pressure plate 33 by the limiting seat 34, the pressure plate 33 can stably press the crankshaft housing 9.

[0045] The drive unit 31 moves the support rod 32 toward the machining plate 2, which in turn moves the pressure plate 33 toward the machining plate 2 until the crankshaft housing 9 abuts against the positioning surface. The crankshaft housing 9 is then clamped and fixed between the pressure plate 33 and the positioning seat 4. After clamping, the machine tool is instructed by program commands to process one of the machining centers of the crankshaft housing 9. After processing, the program commands cause the rotary table 1 to rotate the machining plate 2 by an angle, and the machine tool processes the other machining center of the crankshaft housing 9, and so on. After all the machining centers of the crankshaft housing 9 are processed, the drive unit 31 moves the support rod 32 away from the machining plate 2, the pressure plate 33 is removed, the crankshaft housing 9 is taken off, and the next crankshaft housing 9 to be processed is reinstalled to start the next work cycle.

[0046] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A crankcase side processing fixture, characterized in that: The device includes a rotary table (1) and a processing plate (2) fixedly disposed at the rotating end of the rotary table (1). The processing plate (2) is provided with a clamping device (3) and at least one positioning seat (4). The positioning seat (4) is provided with a positioning surface. The clamping device (3) includes a driving member (31) disposed on the processing plate (2), a support rod (32) disposed at the driving end of the driving member (31), and a pressure plate (33) detachably connected to the support rod (32). The driving member (31) is used to drive the support rod (32) to move along its axis. The moving direction of the support rod (32) is perpendicular to the processing plate (2). The pressure plate (33) is located at the end of the support rod (32) away from the processing plate (2). The support rod (32) is used to pass through and support the workpiece. The pressure plate (33) is used to press the workpiece against the processing plate (2). The workpiece abuts against the positioning surface.

2. A crankcase side face process fixture according to claim 1, characterized in that: The end of the support rod (32) away from the processing plate (2) is detachably connected to the limiting seat (34). The pressure plate (33) has a snap-fit ​​groove (331). The support rod (32) is snapped into the snap-fit ​​groove (331). The pressure plate (33) abuts against the limiting seat (34).

3. A crankcase side face process fixture according to claim 2, characterized in that: The support rod (32) has a limiting groove (321) which is close to the limiting seat (34), and the pressure plate (33) is engaged in the limiting groove (321).

4. A crankcase side face process fixture according to claim 2, characterized in that: The pressure plate (33) has its opposite sides recessed inward.

5. A crankcase side face process fixture according to claim 1, characterized in that: At least one positioning pin (5) is provided on the processing plate (2), and the workpiece has a pin hole corresponding to the positioning pin (5).

6. A crankcase side processing fixture according to claim 1, characterized in that: The processing plate (2) is equipped with a chip blowing device (6), which is used to remove dust, debris and moisture from the positioning surface.

7. A crankcase side face process fixture according to claim 1, characterized in that: A support plate (7) is fixedly provided on the lower edge of the processing plate (2).

8. A crankcase side face process fixture according to claim 1, characterized in that: The processing plate (2) is fixedly equipped with a lifting ring (8).

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