Positioning tool for processing motor fixing bottom plate

Abstract

This utility model discloses a positioning fixture for machining motor mounting base plates, relating to the field of machining technology. It solves the problem of poor positioning accuracy affecting machining accuracy and efficiency of motor mounting base plates. The positioning fixture includes: a base with two symmetrically distributed positioning blocks on its upper surface, the shapes of which are adapted to the shapes of grooves on the motor mounting base plate. At least one threaded hole is provided on the base between the two positioning blocks, and the upper surface of each positioning block protrudes upwards to form a positioning portion; at least one pressure plate with through holes for fasteners to pass through; and fasteners that pass through the through holes on the pressure plate and are threadedly connected to corresponding threaded holes on the base, thereby pressing the pressure plate tightly. This positioning fixture has advantages such as simple structure and good positioning effect, making it suitable for batch machining of motor mounting base plates and significantly improving machining accuracy and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a positioning fixture for machining a motor mounting base plate. Background Technology

[0002] A motor mounting base provides a stable, precise, and reliable foundation for the motor, ensuring the normal, efficient, and long-term operation of the entire transmission system or equipment. Currently, there is a motor mounting base with two design styles; for details, please refer to [link / reference needed]. Figure 1 The motor mounting base plate has a rectangular groove with a through hole inside. The structures of these two types of motor mounting base plates are symmetrical. Drilling and milling are required during the finishing process.

[0003] In existing technologies, the motor mounting base plate is clamped and positioned on both sides using a vise or cylinder. This side-clamping method inevitably obstructs the sides of the motor mounting base plate, affecting processing. Furthermore, since the clamping position of the motor mounting base plate varies each time it is side-clamped, the machine tool's cutting head needs to spend more time repositioning the motor mounting base plate. Additionally, both of these motor mounting base plate designs require two clamping operations, impacting processing efficiency. Utility Model Content

[0004] The purpose of this invention is to solve the above-mentioned problems by designing a positioning fixture for machining a motor fixing base plate, which solves the problem that poor positioning accuracy of the motor fixing base plate affects machining accuracy and efficiency.

[0005] The technical solution of this utility model to achieve the above objectives is a positioning fixture for machining a motor fixing base plate, comprising: The base has two positioning blocks on its upper surface, which are symmetrically distributed. The shape of the positioning blocks matches the shape of the groove on the motor mounting base plate. At least one threaded hole is provided on the base between the two positioning blocks. The upper surface of the positioning blocks protrudes upward to form a positioning part, and the position of the positioning part corresponds to the position of the through hole on the motor mounting base plate. At least one pressure plate is used to press the motor fixing base plate, which is placed on the base and positioned by the positioning block, and the pressure plate has through holes for fasteners to pass through. Fasteners that can pass through through holes in the pressure plate and be threadedly connected to corresponding threaded holes on the base, thereby pressing the pressure plate tight.

[0006] Preferably, the upper surface of the base protrudes upward to form the positioning block.

[0007] Preferably, the positioning block has multiple bolt holes, each bolt hole is equipped with an internal hex bolt, and the positioning block is fixedly installed on the base by the internal hex bolt.

[0008] Preferably, a pad is placed on one of the positioning parts.

[0009] Preferably, the fastener is a cap bolt.

[0010] Preferably, the fastener is a screw, and a nut is provided on the screw.

[0011] Preferably, the base is provided with multiple chip removal grooves.

[0012] Its advantages over existing technologies are: This utility model's positioning fixture has advantages such as simple structure and good positioning effect, and can clamp and position two motor mounting base plates simultaneously. After the two motor mounting base plates are placed on the base, the positioning block on the base will embed into the groove on the motor mounting base plate for positioning. The positioning part on the positioning block will pass through the through hole in the groove and contact the inner wall of the through hole to prevent deformation around the through hole on the motor mounting base plate during processing. Fasteners will press down and lock the pressure plate onto the base, and the two ends of the pressure plate will rest on the two motor mounting base plates, pressing and fixing the two motor mounting base plates onto the base. Since there is no obstruction to the sides of the motor mounting base plates, it is convenient for the machine tool to perform milling processing on the sides of the motor mounting base plates.

[0013] The positioning fixture is fixedly mounted on the machine tool platform, so the position of the motor mounting base plate does not change during each clamping, and the machining head of the machine tool does not need to be recalibrated for each machining operation. This is suitable for batch processing of motor mounting base plates, and significantly improves the machining accuracy and efficiency of the motor mounting base plates. Attached Figure Description

[0014] Figure 1 These are structural schematic diagrams of two types of motor mounting base plates in the existing technology; Figure 2 This is a schematic diagram of the structure of the two types of motor fixing base plates in Example 1 when they are placed on the positioning fixture; Figure 3 This is a schematic diagram of the base structure in Embodiment 1; Figure 4 This is a schematic diagram of the base structure in Embodiment 2; Figure 5 This is a schematic diagram of the structure of one of the motor fixing base plates in Example 3 when it is placed on the positioning fixture.

[0015] In the diagram, 1 is the base; 101 is the threaded hole; 102 is the chip removal groove; 2 is the positioning block; 21 is the positioning part; 3 is the pressure plate; 4 is the cap bolt; 5 is the motor mounting base plate; 6 is the internal hex bolt; and 7 is the pad. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0017] Example 1 As a preferred embodiment of this utility model, a positioning fixture for machining motor fixing base plates is proposed. This positioning fixture can clamp and position two symmetrical motor fixing base plates 5 at the same time, so the machine tool can process two motor fixing base plates 5 at the same time to improve processing efficiency.

[0018] For details, see Figure 2 , Figure 3 The positioning fixture mainly consists of a base 1, positioning blocks 2, pressure plates 3, and cap bolts 4. The base 1 is a high-strength metal plate that is not easily deformed. Two positioning blocks 2 are provided, each positioning one of the two symmetrical motor mounting base plates 5. The pressure plates 3 are used to press and fix the two motor mounting base plates 5 onto the base 1, while the cap bolts 4 are used to lock the pressure plates 3 onto the base 1.

[0019] The upper surface of the base 1 is flat, providing stable support for the motor mounting plate 5. Two positioning blocks 2 protrude upwards in the middle of the upper surface of the base 1, symmetrically distributed on the base 1. The positioning blocks 2 and the base 1 are integrally formed, resulting in high strength. The positioning blocks 2 are rectangular, with their ends along their length a certain distance from the edges of the base 1, ensuring stable contact between the edges of the rectangular grooves on the motor mounting plate 5 and the upper surface of the base 1. The base 1 provides stable support for the motor mounting plate 5.

[0020] See Figure 3 On the upper surface of each positioning block 2, a circular positioning part 21 is formed by protruding upwards. The positioning part 21 is close to the end of the positioning block 2, and its position corresponds to the position of the through hole in the rectangular groove on the motor fixing base plate 5.

[0021] The edges of the four corners of the positioning block 2 are rounded to prevent scratching the rectangular groove on the motor mounting base plate 5.

[0022] Two positioning blocks 2 correspond to two symmetrical motor mounting base plates 5. When the two motor mounting base plates 5 are placed symmetrically on the base 1, the positioning blocks 2 will embed into the rectangular grooves on the motor mounting base plates 5. The thickness of the positioning blocks 2 is consistent with the depth of the rectangular grooves, so that the upper surface of the positioning blocks 2 can provide support for the motor mounting base plates 5. The positioning part 21 on the positioning block 2 passes through the through hole in the rectangular groove, and the positioning part 21 is in close contact with the inner wall of the through hole, so that deformation around the through hole is not easily caused during processing.

[0023] The positioning block 2 is rectangular, so the motor fixing base plate 5 will not deflect during the processing.

[0024] like Figure 3 As shown, a threaded hole 101 is provided in the central area of ​​the upper surface of the base 1. The threaded hole 101 is located between the two positioning blocks 2 and is not on the same straight line as the positioning part 21 on the two positioning blocks 2. Correspondingly, a through hole is provided on the pressure plate 3.

[0025] The number of pressure plates 3 and threaded holes 101 is not unique; there can be two or three, depending on the dimensions of the motor mounting base plate 5 and the pressure plates 3. The smaller the size of the pressure plates 3, the more pressure plates 3 can be used. Conversely, the larger the size of the motor mounting base plate 5, the more pressure plates 3 can be used. Similarly, the number of threaded holes 101 also follows this principle.

[0026] like Figure 2 As shown, after the two motor mounting base plates 5 are placed on the base 1 and positioned, the pressure plate 3 will be placed on the two motor mounting base plates 5. The two ends of the pressure plate 3 will rest on the two motor mounting base plates 5. Then, the cap bolt 4 is passed through the through hole on the pressure plate 3 and threadedly connected to the threaded hole 101 on the base 1. By tightening the cap bolt 4, the cap of the cap bolt 4 will press the pressure plate 3 downward, and the pressure plate 3 will press and fix the two motor mounting base plates 5 on the base 1 so that they will not move, thereby completing the positioning of the two motor mounting base plates 5.

[0027] During precision machining, it facilitates milling of the four sides of the motor mounting base plate 5.

[0028] In other embodiments, instead of using the cap bolt 4 to lock the pressure plate 3, a screw and nut can be used to lock the pressure plate 3. The lower end of the screw passes through the through hole on the pressure plate 3 and is threaded into the threaded hole 101 on the base 1. The nut is located above the pressure plate 3 and is fitted onto the upper end of the screw. By tightening the nut with a wrench, the nut will press the pressure plate 3 downward, thereby pressing the two motor fixing base plates 5 together.

[0029] See Figure 3Multiple chip removal grooves 102 are also provided on the base 1. The chip removal grooves 102 extend along the width direction of the base 1 and are continuous from front to back. The chip removal grooves 102 are located below the part of the motor fixing base plate 5 that needs to be drilled. After drilling, the waste chips are left in the chip removal grooves 102, while making way for the drilling bit to perform drilling and not damaging the base 1.

[0030] Example 2 like Figure 4 As shown, in this embodiment, the positioning block 2 is not integrally formed on the base 1. The positioning block 2 and the base 1 are separate. Multiple bolt holes are provided on each positioning block 2, and countersunk holes are located on the upper side of the bolt holes. Correspondingly, multiple threaded holes 101 are also provided on the upper surface of the base 1. The positioning block 2 is fixedly mounted on the base 1 by headed hexagonal socket head cap screws 6. The lower end of the hexagonal socket head cap screw 6 passes through the bolt hole and is threaded into the corresponding threaded hole 101 on the base 1, while the head of the hexagonal socket head cap screw 6 is hidden in the countersunk hole, so that the head of the bolt does not protrude from the upper surface of the positioning block 2 and does not interfere with the positioning of the motor mounting base plate 5. Therefore, if the positioning block 2 is worn, it can be replaced, saving the maintenance cost of the positioning fixture.

[0031] Example 3 like Figure 5 As shown, in this embodiment, a pad 7 is placed on one of the positioning blocks 2 on the base 1. The pad 7 is used to provide support for the bottom of the pressure plate 3. When only one motor fixing base plate 5 is placed on the base 1, the pad 7 is placed on the positioning block 2 where no motor fixing base plate 5 is placed, and then both ends of the pressure plate 3 are placed on the motor fixing base plate 5 and the pad 7 respectively. This can meet the processing requirements of one motor fixing base plate 5.

[0032] The above technical solution only embodies the preferred technical solution of this utility model. Any changes that may be made by those skilled in the art to certain parts of it embody the principle of this utility model and fall within the protection scope of this utility model.

Claims

1. A positioning fixture for machining a motor mounting base plate, characterized in that, include: The base (1) has two positioning blocks (2) on its upper surface. The two positioning blocks (2) are symmetrically distributed. The shape of the positioning blocks (2) matches the shape of the groove on the motor fixing base plate (5). At least one threaded hole (101) is provided on the base (1) between the two positioning blocks (2). The upper surface of the positioning blocks (2) protrudes upward to form a positioning part (21). The position of the positioning part (21) corresponds to the position of the through hole on the motor fixing base plate (5). At least one pressure plate (3) is used to press the motor fixing base plate (5) placed on the base (1) and positioned by the positioning block (2), the pressure plate (3) having through holes for fasteners to pass through; Fasteners that can pass through the through holes on the pressure plate (3) and be threadedly connected to the corresponding threaded holes (101) on the base (1) so that the pressure plate (3) is pressed.

2. The positioning fixture for machining the motor fixing base plate according to claim 1, characterized in that, The upper surface of the base (1) protrudes upward to form the positioning block (2).

3. The positioning fixture for machining the motor fixing base plate according to claim 1, characterized in that, The positioning block (2) has multiple bolt holes, each bolt hole is equipped with an internal hex bolt (6), and the positioning block (2) is fixedly installed on the base (1) by the internal hex bolt (6).

4. The positioning fixture for machining the motor fixing base plate according to claim 1, characterized in that, A pad (7) is placed on one of the positioning parts (21).

5. The positioning fixture for machining the motor fixing base plate according to claim 1, characterized in that, The fastener used is a cap bolt (4).

6. The positioning fixture for machining the motor fixing base plate according to claim 1, characterized in that, The fastener is a screw, and a nut is provided on the screw.

7. The positioning fixture for machining the motor fixing base plate according to claim 1, characterized in that, The base (1) is provided with multiple chip removal grooves (102).

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