New energy motor shell machine tool double-layer fixing clamp

Abstract

The utility model discloses a new energy motor casing machine tool double -deck fixed clamp relates to machine tool fixture technical field, including double -deck clamp, the double -deck clamp includes the connecting plate at both ends, and the connecting plate between both ends is fixed with surface layer board and bottom layer board respectively, be equipped with the through -hole on the surface layer board, be equipped with several groups of press -fixed clamp and several auxiliary support oil cylinder on the surface layer board, every group press -fixed clamp includes the oil pressure corner cylinder of fixed surface layer board and cooperation support oil cylinder, be equipped with several hydraulic chuck and several stud clamping fixture on the bottom layer board, and the clamp adopts the design of superimposed double -deck four -axis clamp, and the part is hidden in the double -deck space of clamp, reaches the balanced clamping force under the condition that does not influence the rigid structure of clamp, and the quality is minimum simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of machine tool fixture technology, specifically to a double-layer fixing fixture for a new energy motor housing machine tool. Background Technology

[0002] With the development of new energy vehicles, the performance of vehicle drive motors has also improved by leaps and bounds. Consequently, the requirements for the structural strength and machining precision of motor housings are becoming increasingly stringent. Currently, the weight and volume of motor housings have significantly increased. At present, machine tools still use one or two chucks to fix the motor housing and align it for machining. However, due to changes in the machining precision and strength of motor housings, one or two chucks alone are no longer sufficient to meet the positioning requirements of the motor housing. Because the machine tool applies a large force to the motor housing during machining, the motor housing is prone to displacement during machining, leading to machining errors. Utility Model Content

[0003] Purpose of the utility model: The technical problem to be solved by this utility model is to provide a double-layer fixing fixture for a new energy motor housing machine tool, which solves the problem that existing machine tools cannot stably fix the motor housing and ensure the machining accuracy of the motor housing by using only a chuck.

[0004] Technical solution

[0005] To solve the above problems, the technical solution provided by this utility model is as follows:

[0006] A double-layer fixing fixture for a new energy motor housing machine tool includes a double-layer fixture, wherein the double-layer fixture includes connecting plates at both ends, and a top plate and a bottom plate are respectively fixed between the connecting plates at both ends. The top plate has a through hole, and the top plate is provided with a plurality of sets of pressing and fixing fixtures and a plurality of auxiliary support cylinders. Each set of pressing and fixing fixtures includes a hydraulic rotary cylinder fixed on the top plate and a cooperating support cylinder. The bottom plate is provided with a plurality of hydraulic chucks and a plurality of stud clamping fixtures.

[0007] Furthermore, the hydraulic rotary cylinder is configured in correspondence with the cooperating support cylinder.

[0008] Furthermore, the auxiliary support cylinders are evenly and fixedly installed at positions on the surface plate where the pressing and fixing clamps are not installed.

[0009] Furthermore, the base claws of several of the hydraulic chucks move in different directions.

[0010] Furthermore, the stud clamping fixture includes a pressing cylinder and a supporting cylinder. The pressing cylinder is a hydraulic rotary cylinder, a lever cylinder, or a single-acting cylinder, and the pressing cylinder is correspondingly arranged with the supporting cylinder.

[0011] Furthermore, the stud clamping fixture is a lever cylinder.

[0012] Furthermore, several air outlets can be fixedly installed on both the surface plate and the bottom plate.

[0013] Furthermore, the double-layer fixture is mounted on a machine tool mounting base, and support frames are fixed at both ends of the machine tool mounting base. A rotating chuck is rotatably mounted on the support frames, and the double-layer fixture is fixed on the rotating chuck. A machine tool spindle is fixed on the outer side of the rotating chuck.

[0014] Furthermore, a motor housing is fixedly installed inside the double-layer clamp, the top plate is located close to the end face of the motor housing, and the bottom plate is located at the bottom of the motor housing.

[0015] Furthermore, positioning surface air detection components are evenly arranged on the surface plate and the bottom plate, and cylinder release detection components are provided in the cylinder clamps.

[0016] Beneficial effects

[0017] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0018] The technical solution provided by this utility model

[0019] 1. This fixture is an automated fixture. All fixtures are hydraulically driven, which can ensure the fixing strength of the parts. The clamping cylinder uses a hydraulic station to supply oil to clamp or press the parts. The positioning surface airtightness detection determines whether the parts are positioned. The cylinder release detection determines whether the release is in place, ensuring the requirements of automated detection.

[0020] 2. The fixture adopts a stacked double-layer four-axis fixture design, which hides the parts in the double-layer space of the fixture, achieving balanced clamping force without affecting the rigid structure of the fixture, while minimizing weight.

[0021] 3. The fixture adopts internal hole centering and end face positioning. The positioning adopts a chuck-like type to ensure the relative position of the machining position to the inner hole of the blank.

[0022] 4. It allows the machine tool to perform machining of complex shapes and different angles in multiple positions after a workpiece is clamped once, without the need for multiple clamping and repositioning, thereby effectively improving machining accuracy and efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0024] Figure 2 This is a structural diagram of the surface plate of Embodiment 1 of this utility model;

[0025] Figure 3This is a top view of the bottom plate of Embodiment 1 of this utility model.

[0026] Figure 4 This is a structural diagram of the bottom plate of Embodiment 1 of this utility model;

[0027] Figure 5 This is a schematic diagram of the unmounted motor housing on the surfaceless plate of Embodiment 1 of this utility model. Detailed Implementation

[0028] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1

[0030] Combined with appendix Figure 1-5 A double-layer fixed fixture for a new energy motor housing machine tool includes a machine tool base 1, with support frames 2 fixedly mounted at both ends of the machine tool base 1. Rotary chucks 3 are rotatably mounted on both ends of the support frames 2, and the rotary chucks 3 at both ends are coaxially arranged. A machine tool spindle 4 is rotatably mounted on the support frame 2, extending outward from the outside of the support frame 2. The machine tool spindle 4 extending outward from the support frame 2 is fixedly connected to the rotary chucks 3. After the machine tool base 1 is installed in the machine tool fixture, the machine tool spindle 4 can drive the rotary chucks 3 to rotate.

[0031] A double-layer clamp 5 is fixed to both rotating chucks 3 located on both sides. The double-layer clamp 5 includes connecting plates 6 fixed at both ends. The connecting plates 6 are provided with clamping blocks for cooperating with the rotating chucks 3. The rotating chucks 3 fix the double-layer clamp 5 to the machine tool base 1 by engaging and fixing the clamping blocks. A double-layer mounting plate is fixed between the connecting plates 6 on both sides. The double-layer mounting plate is divided into a top plate 7 and a bottom plate 8, with a certain gap between the top plate 7 and the bottom plate 8.

[0032] The double-layer fixture 5 has a motor housing 9 fixed inside. The motor housing 9 is mounted on the double-layer fixture 5 for the machine tool to process the motor housing 9. The motor housing 9 passes through the top plate 7, and the bottom plate 8 is located at the bottom of the motor housing 9. Different types of fixtures for the motor housing 9 are installed on both the top plate 7 and the bottom plate 8. The motor housing 9 is a hollow shell. One side of the motor housing 9 is open, and the side with the opening is the end face. The side of the motor housing 9 without an opening but with only a shaft hole is the bottom face.

[0033] The surface plate 7 has a through hole through which the motor housing 9 passes, thereby bringing the bottom surface of the motor housing 9 close to the bottom plate 8. The gap between the surface plate 7 and the bottom plate 8 is set according to the dimensions of the machined motor housing. The surface plate 7 is located on the side closest to the end face of the motor housing. Several clamps on the surface plate 7 are used to fix the motor housing 9 by engaging with the cross-section of the motor housing 9. Several clamps on the bottom plate 8 are used to engage with the shaft holes and threaded posts on the motor housing 9 to fix the motor housing 9.

[0034] The surface plate 7 is provided with several sets of pressing and fixing clamps 10 and several auxiliary support cylinders 13. Each set of pressing and fixing clamps 10 consists of a hydraulic rotary cylinder 11 and a cooperating support cylinder 12. The hydraulic rotary cylinder 11 is driven by hydraulic oil and can realize the function of rotating and pressing down against the end face of the motor housing 9. The cooperating support cylinder 12 is driven by hydraulic oil, which causes the cylinder to rise. Through the downward pressing of the hydraulic rotary cylinder and the upward lifting of the cooperating support cylinder, the hydraulic clamp can lock the motor housing 9, thereby achieving the purpose of fixing the motor housing. The hydraulic cylinders 12 and 11 are correspondingly arranged, with a corresponding hydraulic cylinder 12 at the pressing position of each hydraulic cylinder 11. The hydraulic cylinders 12 prevent excessive downward pressure from the hydraulic cylinders 11, which could cause deformation at the contact point between the motor housing 9 and the hydraulic cylinder 11. By supporting the opposite side of the contact surface between the motor housing 9 and the hydraulic cylinder 11 with the hydraulic cylinders 12, the pressure of the hydraulic cylinders 11 is balanced, preventing deformation of the motor housing. The pressing and fixing fixture 10 is driven by hydraulic oil and is suitable for machining applications requiring large clamping force and high precision. It can provide the best fixing effect for the machine tool housing 9, ensuring the machining accuracy of the machine tool.

[0035] Several pressing and fixing clamps 10 are installed on the surface plate 7 and distributed around the motor housing 9. The distribution of the pressing and fixing clamps 10 is preferably such that they can apply pressure to the motor housing 9 evenly. Through reasonable layout, the motor housing 9 can be subjected to uniform force, preventing problems such as excessive pressure on one side and insufficient pressure on the other side, which could lead to deformation or tilting of the motor housing 9. Preferably, the pressing and fixing clamps 10 are arranged around the motor housing 9 at equal angles.

[0036] The auxiliary support cylinders 13 are evenly distributed and fixedly installed at positions other than the pressing and fixing clamps 10. They can work with the pressing and fixing clamps 10 to hold and fix the motor housing 9. When the motor housing 9 is under pressure, they fully abut against the motor housing 9, thereby increasing the number of fixing points for the motor housing 9 without adding the pressing and fixing clamps 10.

[0037] The support cylinder has the following functions: it can improve the stability of the fixture supporting the part, support the workpiece at multiple points, effectively distribute the weight of the workpiece and the forces generated during processing, reduce workpiece deformation, and ensure machining accuracy. During part machining, it can prevent deformation caused by gravity and cutting forces.

[0038] Enhanced positioning accuracy: The support cylinder can precisely control the support position and force. Combined with the positioning elements of the fixture, it can achieve more accurate positioning, which helps to improve the consistency of workpiece processing.

[0039] It can adapt to workpieces of different shapes and sizes. By adjusting the position and extension length of the auxiliary support cylinder, it can accommodate workpieces of various shapes and sizes, thus improving the versatility and flexibility of the fixture.

[0040] The support cylinder also compensates for manufacturing errors in the workpiece. For workpieces with manufacturing errors, the auxiliary support cylinder can automatically adjust the support force and position according to the actual situation to achieve good fit and support, and ensure processing quality.

[0041] Improving the machinability and rationally arranging the auxiliary support cylinders can make the workpiece more evenly stressed during processing, which is conducive to improving processing efficiency and tool life, and reducing processing costs.

[0042] The bottom plate 8 is provided with several hydraulic chucks 14 and several stud clamping fixtures 15. The hydraulic chucks 14 are used to position the circular shaft holes of the motor housing 9. The hydraulic chucks 14 can be set on the bottom plate 8 according to the number and position of the shaft holes on the motor housing 9. The hydraulic chucks 14 can be three-jaw chucks or two-jaw chucks. When a two-jaw chuck is selected, the outward movement direction of the base claws on the multiple hydraulic chucks 14 should not be the same. By moving the base claws on the multiple hydraulic chucks 14 in different directions, the base claws abut against the multiple shaft holes of the motor housing 9, so that the multiple shaft holes of the motor housing 9 can be subjected to abutment forces in different directions or at different angles, thereby ensuring that the positioning of the axis of the motor housing 9 by the hydraulic chucks 14 is more accurate.

[0043] The hydraulic chuck 14 is mounted on the surface of the bottom plate 8, with its base jaws protruding from the bottom plate 8 and facing the top plate 7.

[0044] When the motor housing 9 moves through the surface plate 7 to a position close to the bottom plate 8, the shaft hole of the motor housing 9 is fitted onto the hydraulic chuck 14. At this time, the base claws on the hydraulic chuck 14 move and fully abut against the shaft hole of the motor housing 9, thereby achieving the purpose of positioning the motor housing 9.

[0045] Several threaded posts 20 are randomly distributed on the motor housing 9. The threaded posts 20 are used for installation of the motor housing 9 during assembly. The threaded post clamping fixture 15 is used in conjunction with the pressing cylinder 18 and the support cylinder 19 to fix the protruding threaded posts 20 on the motor housing 9. The pressing cylinder 18 can be a hydraulic rotary cylinder, a lever cylinder, or a single-acting cylinder, preferably a hydraulic lever cylinder. The hydraulic lever cylinder presses the threaded posts 20 by swinging its gripper. Because the hydraulic lever cylinder uses a swinging pressing method, its installation position on the bottom plate 8 can be farther from the motor housing 9 compared to other similar pressing cylinders. Each threaded post 20 pressed by the hydraulic lever cylinder is correspondingly fixed with a support cylinder 19 on the bottom plate 8. The support cylinder 19 works with the pressing cylinder 18 to fix the motor housing 9. At the same time, the support cylinder 19 can also maintain the pressure balance of the pressing cylinder on the threaded post 20 and prevent the threaded post 20 from deforming by being located on the opposite side of the pressing cylinder.

[0046] Several air outlets 16 can be fixedly installed on both the surface plate 7 and the bottom plate 8. The air outlets 16 are installed at the machining position on the motor housing 9, so that they can play a role in chip removal when machining the motor housing 9, thereby preventing machining chips from affecting the machine tool's machining of the motor housing 9.

[0047] The various types of clamps on the double-layer fixture are hydraulic cylinder clamps, all of which are controlled by hydraulic oil. Hydraulic cylinder clamps not only have precise positioning, but also have large force application and bearing capacity, making them suitable for fixing larger and heavier parts. They can ensure the stable fixation of parts during processing and ensure processing accuracy.

[0048] Positioning surface air detection components are evenly arranged on the surface plate 7 and the bottom plate 8. After the motor housing 9 is fixed, the air tightness result of the positioning surface air detection components is used to determine whether the part is positioned in place. The hydraulic cylinder fixture is equipped with a hydraulic cylinder release detection component to ensure the pressure of the hydraulic cylinder fixture. The above air detection method is realized by the machine tool SMC air detection component. Positioning surface air tightness detection determines whether the part is positioned in place, and hydraulic cylinder release detection determines whether the release is in place to ensure the requirements of automated detection. The positioning surface air detection components can be directly installed on the auxiliary support hydraulic cylinder 13, which facilitates the air tightness detection of the contact surface and ensures the stability of the part.

[0049] By precisely controlling the rotation of the chuck when machining parts, the machine tool can easily perform machining of complex shapes and different angles in multiple positions after clamping the workpiece once, without the need for multiple clamping and repositioning, thereby effectively improving machining accuracy and efficiency.

[0050] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A double-layer fixing fixture for a new energy motor housing machine tool, characterized in that, The device includes a double-layer clamp, comprising connecting plates at both ends, with a top plate and a bottom plate fixedly disposed between the connecting plates at both ends. The top plate has a through hole and is provided with several sets of pressing and fixing clamps and several auxiliary support cylinders. Each set of pressing and fixing clamps includes a hydraulic rotary cylinder fixed to the top plate and a cooperating support cylinder. The bottom plate is provided with several hydraulic chucks and several stud clamping clamps.

2. The double-layer fixing fixture for a new energy motor housing machine tool according to claim 1, characterized in that, The hydraulic rotary cylinder is configured in correspondence with the supporting hydraulic cylinder.

3. The double-layer fixing fixture for a new energy motor housing machine tool according to claim 1, characterized in that, The auxiliary support cylinders are evenly and fixedly installed at positions on the surface plate where the pressing and fixing clamps are not installed.

4. The double-layer fixing fixture for a new energy motor housing machine tool according to claim 1, characterized in that, The movement directions of the base jaws of several hydraulic chucks are different.

5. A double-layer fixing fixture for a new energy motor housing machine tool according to claim 1, characterized in that, The stud clamping fixture includes a pressing cylinder and a supporting cylinder. The pressing cylinder is a hydraulic rotary cylinder, a lever cylinder, or a single-acting cylinder, and the pressing cylinder is correspondingly arranged with the supporting cylinder.

6. A double-layer fixing fixture for a new energy motor housing machine tool according to claim 5, characterized in that, The stud clamping fixture is a lever cylinder.

7. A double-layer fixing fixture for a new energy motor housing machine tool according to claim 1, characterized in that, Several air outlets can be fixedly installed on both the surface plate and the bottom plate.

8. A double-layer fixing fixture for a new energy motor housing machine tool according to claim 1, characterized in that, The double-layer fixture is mounted on a machine tool mounting base. Support frames are fixed at both ends of the machine tool mounting base. A rotating chuck is rotatably mounted on the support frames. The rotating chuck fixes the double-layer fixture. A machine tool spindle is fixed on the outside of the rotating chuck.

9. A double-layer fixing fixture for a new energy motor housing machine tool according to claim 1, characterized in that, The double-layer clamp has a motor housing fixed inside, the top plate is located close to the end face of the motor housing, and the bottom plate is located at the bottom of the motor housing.

10. A double-layer fixing fixture for a new energy motor housing machine tool according to claim 1, characterized in that, The surface plate and the bottom plate are uniformly provided with positioning surface air detection components, and the cylinder clamps are all provided with cylinder release detection components.

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