Blank positioning device suitable for inverter shell machining

Abstract

The utility model discloses a blank positioning device suitable for processing an inverter shell. The blank positioning device comprises a square bridge plate, a pressing clamp assembly and a positioning assembly, wherein the pressing clamp assembly is arranged on the bridge plate and used for pressing the inverter shell, and the positioning assembly is matched with a hole of the inverter shell. The pressing clamp assembly comprises a first clamp, a second clamp and a third clamp. The positioning assembly comprises a first positioning pin and a second positioning pin; in the length direction of the square bridge plate, the first clamp and the third clamp are arranged on the two sides of the square bridge plate respectively. A second clamp is arranged in the width direction of the square bridge plate; and positioning pin heads matched with the positioning holes are arranged on the first positioning pin and the second positioning pin. And through the design of the positioning pin head and the accurate positioning pin, the inverter shell blank can be accurately positioned, and deviation caused by unstable positioning in the machining process is avoided. And secondly, the device can firmly press the inverter shell, it is guaranteed that the inverter shell is not loosened in the machining process, and therefore the accuracy of the machined hole site is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of inverter housing processing, and in particular to a blank positioning device suitable for inverter housing processing. Background Technology

[0002] During the manufacturing process of the inverter housing, the blank is made by high-pressure casting, and the machining allowance on one side is only about 0.7 mm. The deformation of the blank after demolding and the error during processing make the positioning point of the blank often unstable.

[0003] This instability leads to inaccurate fixture positioning during machining, resulting in insufficient machining allowance for the surface to be completely cut, and even causing the product to become scrap.

[0004] Especially at the side fixing points of the inverter housing, the stability of the positioning points is greatly reduced due to the error during blank demolding and the unavoidable deformation, resulting in misalignment of the positioning points and thus the deviation or offset of the machining hole positions.

[0005] This inaccurate positioning severely impacts production efficiency, even leading to a scrap rate as high as 50%. Therefore, improving the positioning accuracy of blanks and reducing the scrap rate has become an urgent problem to be solved. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a blank positioning device suitable for inverter housing processing that improves blank positioning accuracy and reduces scrap rate.

[0007] The technical solution of this utility model: The blank positioning device for inverter housing processing described in this utility model includes a square bridge plate, a clamping fixture assembly for pressing the inverter housing and a positioning assembly that matches the holes of the inverter housing, all disposed on the bridge plate.

[0008] The clamping fixture assembly includes a first clamp, a second clamp, and a third clamp;

[0009] The positioning component includes a first positioning pin and a second positioning pin;

[0010] Along the length of the square bridge plate, the first clamp and the third clamp are respectively disposed on both sides of the square bridge plate; along the width of the square bridge plate, a second clamp is provided.

[0011] The first and second positioning pins are provided with positioning pin heads with matching positioning holes.

[0012] Furthermore, the first clamp includes a clamping plate, a clamping plate support column, and a clamping plate base disposed on the square bridge plate;

[0013] The front end of the clamping plate is provided with a pressing contact surface for contacting and pressing the inverter housing, and the rear end is hinged to a clamping plate pull rod; the middle section of the clamping plate is hinged to the clamping plate support column; the clamping plate pull rod can pull the clamping plate to swing relative to the clamping plate support column;

[0014] A pressing support column is provided at the lower end of the pressing contact surface.

[0015] Furthermore, the lower end of the compression support column is provided with a support column base; the support column base is disposed on the square bridge plate.

[0016] Furthermore, along the length of the square bridge plate, an auxiliary clamping fixture is provided on one side of the first clamp.

[0017] Furthermore, in the width direction of the square bridge plate, an auxiliary positioning rod for fixing the inverter housing is also provided on one side of the second clamp.

[0018] Furthermore, a second auxiliary positioning rod and an auxiliary positioning piece are also provided on one side of the auxiliary positioning rod.

[0019] Furthermore, the first clamp, the second clamp, and the third clamp have the same structure.

[0020] Furthermore, the positioning pin is fixed to the square bridge plate by a pin base.

[0021] Furthermore, the lower end of the positioning pin is disposed within the pin base via a positioning pin rod, and the positioning pin rod can reciprocate along the pin base.

[0022] Furthermore, a return mechanism is provided at the lower end of the positioning pin.

[0023] Furthermore, a second auxiliary clamping fixture with the same structure as the first clamp is provided on one side of the first positioning pin.

[0024] The advantages of this utility model compared with the prior art are:

[0025] 1. Improved positioning accuracy: Through the design of the positioning pin head and precise positioning pin, the inverter housing blank can be accurately positioned, avoiding deviations caused by unstable positioning during the processing.

[0026] 2. Improved processing stability: The clamping fixture assembly can firmly clamp the inverter housing, ensuring that it does not loosen during processing, thereby ensuring the accuracy of the processed hole positions.

[0027] 3. Reduced scrap rate and wide applicability: Effective positioning and clamping measures reduce machining errors and improve the pass rate, thereby significantly reducing the scrap rate and increasing production efficiency. Furthermore, the device has a simple structure and is suitable for machining various types of inverter housing blanks, demonstrating good versatility. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the specific structure of the first clamp in this utility model;

[0030] Figure 3 This is a schematic diagram of the overall structure of the positioning pin and its components in this utility model;

[0031] Figure 4 This is a structural diagram of the inverter housing to which this utility model applies. Detailed Implementation

[0032] To enhance understanding of this utility model, we will now describe it in further detail with reference to the accompanying drawings. This embodiment is only used to explain this utility model and does not constitute a limitation on the scope of protection of this utility model.

[0033] An existing inverter housing 7 includes a first positioning surface 91, a second positioning surface 92, a third positioning surface 93, a first positioning hole 81, and a second positioning hole 82 arranged around the periphery of the inverter housing body. A first auxiliary positioning surface 901 is provided on one side of the first positioning surface 91, and a second auxiliary positioning surface 902 is provided on one side of the first positioning hole 81.

[0034] like Figures 1-3 This invention illustrates an embodiment of a blank positioning device suitable for inverter housing processing, comprising the following contents:

[0035] Device Composition

[0036] First, the inverter housing blank is placed on the square bridge plate 1. The square bridge plate 1 serves as the support base for this device, possessing sufficient rigidity and stability. It is equipped with multiple clamping fixture assemblies and positioning assemblies to ensure stable positioning of the inverter housing during the processing.

[0037] Clamping fixture assembly:

[0038] The first clamp 21 and the third clamp 33 are respectively installed on both sides of the square bridge plate 1, responsible for clamping the two ends of the inverter housing to prevent it from shifting during processing.

[0039] The first clamp 21 includes a clamping plate 41, a clamping plate support column 43, and a clamping plate base 44. The front end of the clamping plate 41 has a pressing contact surface 410, which can make close contact with the outer surface of the inverter housing. The clamping plate 41 is hinged to the clamping plate support column 43 through a clamping plate pull rod 42. The pull rod can adjust the swing angle of the clamping plate, thereby achieving precise clamping of the blank.

[0040] The second clamp 22 is located on one side of the square bridge plate 1 in the width direction. Its function is to further press the other end of the inverter housing and ensure its stability. In addition, an auxiliary positioning rod 51 is provided on one side of the second clamp 22 to further ensure the accurate positioning of the inverter housing in the width direction.

[0041] Positioning component:

[0042] The first locating pin 31 and the second locating pin 32 are fixedly connected to the square bridge plate 1 through matching locating pin heads 304. The locating pin head 304 is designed to connect to the square bridge plate through the pin head base 301 to ensure that it does not deform during processing.

[0043] The lower end of the locating pin head 304 is set inside the pin head base 301 via the locating pin rod 303. The locating pin rod 303 can reciprocate within the pin head base to ensure that the inverter housing remains in the correct position during the manufacturing process.

[0044] To ensure that the positioning pin 303 can return to its original position after reciprocating motion, a return mechanism 305 is provided at the lower end of the positioning pin to realize the automatic reset of the pin.

[0045] In addition, an auxiliary clamping fixture 61 is provided on one side of the first fixture 21 along the length of the square bridge plate to strengthen the clamping force on the blank and ensure that the blank will not loosen due to insufficient clamping during processing.

[0046] Usage steps

[0047] Placing the blank: Place the inverter housing blank on the square bridge plate 1 to ensure the blank is initially stable. At this time, the square bridge plate provides a stable support platform.

[0048] Positioning operation: By adjusting the first positioning pin 31 and the second positioning pin 32, the center position of the blank is ensured to match the positioning pin head 304, achieving precise positioning. The positioning pin rod 303 cooperates with the positioning pin head 304, allowing the positioning pin to accurately guide the blank into the predetermined position.

[0049] Clamping the blank: Initiate the clamping operation. First, fix both sides of the blank using the first clamp 21 and the third clamp 33 to ensure that the blank will not shift. Then, adjust the second clamp 22 and the auxiliary positioning rod 51 to further fix the width direction of the blank, ensuring that the blank remains in a stable position throughout the processing.

[0050] Clamping adjustment: If necessary, the operator can use the auxiliary clamping fixture 61 to further adjust the clamping force to ensure the blank is firmly fixed and avoid processing errors caused by insufficient clamping.

[0051] Machining process: After the blank is clamped and precisely positioned, machining is performed. During the machining process, due to the precise design of the positioning pin assembly and the stability of the fixture, the holes in the inverter housing are machined accurately with sufficient machining allowance, ensuring that the machined blank meets the design requirements.

[0052] Reset operation: After processing is completed, the operator can reset the positioning pin 303 through the return mechanism 305 for the next operation.

[0053] Implementation effect

[0054] The blank positioning device in this embodiment successfully solves the problem of unstable positioning of inverter housing blanks during processing through precise positioning pin and fixture design. In practical use, the device can effectively maintain the precise positioning of the blank during processing, preventing the generation of defective products due to positioning errors. Compared with traditional positioning devices, this device can significantly reduce the scrap rate, improve processing accuracy and production efficiency, and performs particularly well in the high-precision processing of inverter housings.

[0055] After multiple tests and production practices, the scrap rate was significantly reduced after implementing the device, reaching normal production levels, ensuring the quality of product delivery, and meeting the customer's dual requirements for product quality and delivery time.

[0056] The datum hole and each pillar are formed in the same mold cavity, and their relative positions are stable. Furthermore, the local deformation of the blank has little impact on the positioning hole, which ensures stable and reliable positioning during machining.

[0057] After adopting this new positioning fixture for the inverter housing, the data is very stable, the machining position is very accurate, the machining allowance of the blank is uniform and very stable, and the scrap rate caused by the misalignment of the positioning blank has decreased from 50% to 0.2%, which is a very significant effect.

[0058] In summary, through the design and application of this embodiment, it can be seen that the blank positioning device of this utility model can not only effectively solve the problem of scrap caused by inaccurate positioning during the processing of inverter housing blanks, but also improve processing efficiency and accuracy, reduce scrap rate, and thus provide important technical support for the efficient production of inverter housings.

[0059] The above specific embodiments are only for illustrating the technical concept and structural features of this utility model, and are intended to enable those skilled in the art to implement them. However, the above content does not limit the protection scope of this utility model. Any equivalent changes or modifications made in accordance with the spirit and essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A blank positioning device suitable for inverter housing machining, characterized in that: The utility model relates to a square bridge plate (1) and set up on bridge plate (1) for pressing in inverter shell's pressing clamp component and matching inverter shell hole's positioning component are provided; The pressing clamp component includes a first clamp (21), a second clamp (22) and a third clamp (33); The positioning component includes a first positioning pin (31) and a second positioning pin (32); In the length direction of the square bridge plate, the first clamp (21) and the third clamp (33) are arranged on both sides of the square bridge plate (1); in the width direction of the square bridge plate (1), the second clamp (22) is arranged; The first positioning pin (31) and the second positioning pin (32) are provided with positioning pin heads (304) matching the positioning holes.

2. The blank positioning device suitable for inverter housing machining according to claim 1, characterized in that: The first clamp (21) includes a clamp plate (41), a clamp plate support column (43) and a clamp plate base (44) arranged on the square bridge plate (1); The front end of the clamp plate (41) is provided with a pressing contact surface (410) for contacting and pressing the inverter shell, and the rear end is hingedly connected with a clamp plate pull rod (42); the middle section of the clamp plate (41) is hingedly connected with the clamp plate support column (43); the clamp plate pull rod (42) can pull the clamp plate (41) to swing relative to the clamp plate support column (43); The lower end of the pressing contact surface (410) is provided with a pressing support column (45).

3. The blank positioning device suitable for inverter housing machining according to claim 2, characterized in that: The lower end of the pressing support column (45) is provided with a support column base (46); the support column base (46) is arranged on the square bridge plate (1).

4. The blank positioning device suitable for inverter housing machining according to claim 1, characterized in that: In the length direction of the square bridge plate, the first clamp (21) is further provided with an auxiliary clamping clamp (61) on one side.

5. The blank positioning device suitable for inverter housing machining according to claim 1, characterized in that: In the width direction of the square bridge plate, the second clamp (22) is further provided with an auxiliary positioning rod (51) for fixing the inverter shell on one side.

6. The blank positioning device suitable for inverter housing machining according to claim 5, characterized in that: The auxiliary positioning rod (51) is further provided with a second auxiliary positioning rod (52) and an auxiliary positioning sheet (53) on one side.

7. The blank positioning device suitable for inverter housing machining according to any one of claims 1-6, characterized in that: The first clamp (21), the second clamp (22) and the third clamp (33) are structurally identical.

8. The blank positioning device suitable for inverter housing machining according to any one of claims 1-6, characterized in that: The positioning pin head (304) is fixed on the square bridge plate (1) through a pin head base (301); The lower end of the positioning pin head (304) is arranged in the pin head base (301) through a positioning pin rod (303), and the positioning pin rod (303) can reciprocate along the pin head base (301).

9. The blank positioning device suitable for inverter housing machining according to claim 8, characterized in that: The lower end of the positioning pin rod (303) is provided with a recovery mechanism (305).

10. The blank positioning device suitable for inverter housing machining according to claim 7, characterized in that: The first positioning pin (31) is further provided with a second auxiliary clamping clamp (62) identical in structure to the first clamp (21) on one side.

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