Special tool for lathing explosion-proof surface of engine base

Abstract

The utility model belongs to the technical field of motor production equipment, and relates to a special tool for turning an explosion-proof surface of a base, which comprises a flange seat, a pair of seam allowance clamping components is arranged on the front side of the flange seat, and the seam allowance clamping components are respectively matched with seam allowances at two ends of the base to be machined, slide relatively and clamp the base to be machined. Each seam allowance clamping assembly comprises a pressing plate and a seam allowance explorator arranged on the inner side of the pressing plate, the seam allowance explorators are pagoda-shaped seam allowance explorators matched with various seam allowance specifications, and the seam allowance clamping assemblies clamp the machine base to be machined and then are tensioned through pull rods. The special tool for lathing the explosion-proof surface of the engine base can meet the lathing requirement of a CT4 explosion-proof motor.

Description

Technical Field

[0001] This utility model belongs to the technical field of motor production equipment, and relates to a special tooling for machining the explosion-proof surface of the motor base. Background Technology

[0002] Explosion-proof motors are classified into two types based on their explosion-proof rating: BT4 and CT4. BT4 allows for planar explosion-proof design, while the higher-grade CT4 motor does not, and the outlet line on the base changes from planar to cylindrical. The current trend is a rapid increase in the market share of CT4 explosion-proof motors. However, the machining of CT4 motors is quite complex, requiring machining of the planar inner cylindrical surface while ensuring perpendicularity between the planar and inner cylindrical surfaces. Conventionally, the explosion-proof surface of a CT4 motor is machined using a boring machine, involving at least two processes: milling the planar surface with a disc milling cutter and boring the inner cylindrical surface with a boring bar. To achieve the perpendicularity requirement, the tools at both stations need to be repeatedly calibrated during machining. When the bore diameter changes, the fixing screws need to be released for manual fine-tuning, making the machining process extremely cumbersome.

[0003] Therefore, it is essential to adopt CNC lathe machining to improve machining efficiency. In view of this, it is necessary to develop a tooling for lathe machining. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a special tooling for machining the explosion-proof surface of a motor base, which can meet the machining requirements of the CT4 explosion-proof motor.

[0005] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution:

[0006] A special tooling for machining explosion-proof machine bases includes a flange seat. A pair of stop clamping assemblies are provided on the front side of the flange seat. The stop clamping assemblies are respectively adapted to the stops at both ends of the machine base to be machined, and slide relative to each other to clamp the machine base to be machined. Each stop clamping assembly includes a pressure plate and a stop template disposed inside the pressure plate. The stop template is a pagoda-shaped stop template adapted to various stop specifications. After the stop clamping assembly clamps the machine base to be machined, it is tightened by a pull rod.

[0007] In the aforementioned special tooling for machining explosion-proof machine bases, the sliding method of the stop clamping assembly can be that two stop clamping assemblies slide towards each other; or it can be that one stop clamping assembly is fixed, and then another stop clamping assembly is slid towards the stop clamping assembly.

[0008] In the aforementioned special tooling for machining explosion-proof machine bases, the stop clamping assembly can be a manually adjustable manual clamping plate or a hydraulically adjustable hydraulic clamping plate.

[0009] In the aforementioned special tooling for machining explosion-proof machine bases, the pull rod passes through the stop clamping assembly axially, and locking nuts are screwed to both ends of the pull rod. The locking nuts respectively abut against the outer surface of the stop clamping assembly. Preferably, the locking nuts are flange nuts, and a gasket is provided between the locking nuts and the stop clamping assembly.

[0010] In the aforementioned special tooling for machining explosion-proof machine bases, the pull rod is eccentrically positioned relative to the stop clamping assembly, and the axis of the pull rod is located on the side of the stop clamping assembly away from the flange seat.

[0011] In the aforementioned special tooling for machining explosion-proof machine bases, the stop template includes several coaxially arranged positioning stops, the radial dimensions of which decrease sequentially from the outside to the inside.

[0012] In the above-mentioned special tooling for machining explosion-proof machine bases, the pressure plate and the stop template are coaxially arranged, the inner side of the pressure plate is provided with an installation groove that matches the outer end of the stop template, and the pressure plate and the stop template are fastened together by several fastening bolts.

[0013] In the aforementioned special tooling for machining explosion-proof machine bases, a radial groove is provided on the flange seat, and a radial slider is slidably disposed within the radial groove, the radial slider being fixedly connected to the pressure plate.

[0014] In the above-mentioned special tooling for machining explosion-proof machine bases, a connecting block is formed on the front side of the radial slider, a positioning groove that cooperates with the connecting block is provided on the pressure plate, the connecting block is embedded in the positioning groove, and connecting plates that are fixedly connected to the pressure plate are provided on both sides of the connecting block.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] 1. This utility model provides a special tooling for machining the explosion-proof surface of a machine base. It can accurately and securely clamp the two end faces of the machine base to be machined, meeting the machining requirements for the explosion-proof surface. Using a CNC lathe, the machining of the flat surface and the inner circle can be completed in a single clamping operation. The perpendicularity and dimensional tolerances of the inner circle are controlled by the machine tool's own precision, eliminating the need for manual adjustment. Furthermore, the drilling of the threaded holes in the machine base can be performed simultaneously with turning, further improving efficiency.

[0017] 2. This utility model uses a pagoda-shaped stop template to clamp the machine base to be processed. The pagoda-shaped stop template includes multiple positioning stops of different diameters and lengths, which can be adapted to machine bases of different specifications, thereby improving the versatility of this utility model.

[0018] 3. After clamping, this utility model further tightens the clamping mechanism via a pull rod, resulting in a more stable clamping and avoiding clamping drawbacks caused by outward deformation of the tooling plane. Furthermore, the eccentric setting of the pull rod, with its longer lever arm further away from the axis of the clamping assembly, effectively reduces deformation. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a cross-sectional view of the present invention;

[0021] Figure 3 This is an exploded view of this utility model;

[0022] Figure 4 This utility model relates to the clamping mechanism for the machine base to be processed. Figure 1 ;

[0023] Figure 5 This utility model relates to the clamping mechanism for the machine base to be processed. Figure 2 ;

[0024] Reference numerals: 1. Flange seat; 2. Stop clamping assembly; 3. Machine base to be processed; 4. Pressure plate; 5. Stop template; 6. Tie rod; 7. Lock nut; 8. Positioning stop; 9. Mounting groove; 10. Fastening bolt; 11. Radial groove; 12. Radial slider; 13. Connecting block; 14. Positioning groove; 15. Connecting plate. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-5 :

[0026] A special tooling for machining explosion-proof machine bases includes a flange seat 1. A pair of stop clamping assemblies 2 are provided on the front side of the flange seat 1. The stop clamping assemblies 2 are respectively adapted to the stops at both ends of the machine base 3 to be processed, and slide relative to each other to clamp the machine base 3 to be processed. Each stop clamping assembly 2 includes a pressure plate 4 and a stop template 5 disposed inside the pressure plate 4. The stop template 5 is a pagoda-shaped stop template 5 adapted to various stop specifications. After the stop clamping assembly 2 clamps the machine base 3 to be processed, it is tightened by a pull rod 6.

[0027] The clamping process in this embodiment is as follows: the machine base 3 to be processed is clamped to a predetermined position between the two stop clamping components 2, and the stop clamping components 2 are driven to move towards each other to clamp the machine base 3. After clamping, the stop template 5 and the machine base stop cooperate to form a centering structure; or, the machine base 3 to be processed is clamped and placed on the lower stop clamping component 2, while its lower stop abuts against the stop template 5, and then the upper stop clamping component 2 is moved so that its stop template 5 is inserted into the upper stop of the machine base 3 to complete the clamping. After clamping, the stop template 5 and the machine base stop cooperate to form a centering structure; after clamping, the outlet of the machine base 3 is distributed horizontally and faces the cutting tool direction. The spindle drives the flange seat 1 to drive the stop clamping component 2 and the machine base 3 to rotate to perform turning of the plane and inner circle.

[0028] Depending on the specific circumstances during processing, the aforementioned stop clamping assembly 2 can be a manually adjustable manual clamping plate or a hydraulically adjustable hydraulic clamping plate.

[0029] In this embodiment, the specific assembly structure of the pull rod 6 is as follows: the pull rod 6 passes through the stop clamping assembly 2 along the axial direction, and the two ends of the pull rod 6 are screwed with locking nuts 7, which respectively abut against the outer surface of the stop clamping assembly 2; preferably, the locking nuts 7 are flange nuts, and a gasket is provided between the locking nuts 7 and the stop clamping assembly 2.

[0030] Furthermore, the pull rod 6 is eccentrically positioned relative to the stop clamping assembly 2, and the axis of the pull rod 6 is located on the side of the stop clamping assembly 2 away from the flange seat 1. By eccentrically positioning the pull rod 6, the lever arm during tightening can be increased, thus better exerting the tightening effect.

[0031] To increase the versatility of this embodiment, the stop template 5 includes several coaxially arranged positioning stops 8. The radial dimensions of the positioning stops 8 decrease sequentially from the outside to the inside. Different positioning stops 8 correspond to different machine bases. In this embodiment, a total of five positioning stops 8 are provided, corresponding to machine bases with different center heights of H63, H71, H80, H90, and H100, respectively. Figure 4 The diagram shows the clamping status of the H63 base; attached. Figure 5 The diagram shows the clamping status of the H100 base.

[0032] In this embodiment, the specific connection method of the pressure plate 4 and the stop template 5 is as follows: the pressure plate 4 and the stop template 5 are coaxially arranged, the inner side of the pressure plate 4 is provided with an installation groove 9 that matches the outer end of the stop template 5, and the pressure plate 4 and the stop template 5 are fastened together by a number of fastening bolts 10.

[0033] In this embodiment, the sliding structure of the stop clamping assembly 2 is as follows: a radial groove 11 is provided on the flange seat 1, and a radial slider 12 is slidably disposed in the radial groove 11. The radial slider 12 is fixedly connected to the pressure plate 4. By driving the radial slider 12 to slide along the radial groove 11, the stop clamping assembly 2 is driven to move towards each other.

[0034] Furthermore, a connecting block 13 is formed on the front side of the radial slider 12, and a positioning groove 14 that cooperates with the connecting block 13 is provided on the pressure plate 4. The connecting block 13 is embedded in the positioning groove 14, and connecting plates that are fixedly connected to the pressure plate 4 are provided on both sides of the connecting block 13.

[0035] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A special tooling for machining explosion-proof machine base surfaces, characterized in that, The flange includes a flange seat (1), and a pair of stop clamping assemblies (2) are provided on the front side of the flange seat (1). The stop clamping assemblies (2) are adapted to the stops at both ends of the machine base (3) to be processed, and slide relative to each other and clamp the machine base (3) to be processed. Each stop clamping assembly (2) includes a pressure plate (4) and a stop template (5) provided inside the pressure plate (4). The stop template (5) is a pagoda-shaped stop template (5) adapted to various stop specifications. After the stop clamping assembly (2) clamps the machine base (3) to be processed, it is tightened by a pull rod (6).

2. The special tooling for machining explosion-proof machine bases according to claim 1, characterized in that, The pull rod (6) passes through the stop clamping assembly (2) axially, and the two ends of the pull rod (6) are screwed with locking nuts (7), which abut against the outer surface of the stop clamping assembly (2).

3. The special tooling for machining explosion-proof machine bases according to claim 2, characterized in that, The pull rod (6) is eccentrically positioned relative to the stop clamping assembly (2), and the axis of the pull rod (6) is located on the side of the stop clamping assembly (2) away from the flange seat (1).

4. The special tooling for machining explosion-proof machine bases according to claim 1, characterized in that, The stop template (5) includes several coaxially arranged positioning stops (8), and the radial dimensions of the positioning stops (8) decrease sequentially from the outside to the inside.

5. The special tooling for machining explosion-proof machine bases according to claim 1, characterized in that, The pressure plate (4) and the stop template (5) are coaxially arranged. The inner side of the pressure plate (4) is provided with an installation groove (9) that is adapted to the outer end of the stop template (5). The pressure plate (4) and the stop template (5) are fastened together by several fastening bolts (10).

6. The special tooling for machining explosion-proof machine bases according to claim 1, characterized in that, The flange seat (1) is provided with a radial groove (11), and a radial slider (12) is slidably disposed in the radial groove (11). The radial slider (12) is fixedly connected to the pressure plate (4).

7. The special tooling for machining explosion-proof machine bases according to claim 6, characterized in that, The radial slider (12) has a connecting block (13) formed on its front side. The pressure plate (4) is provided with a positioning groove (14) that cooperates with the connecting block (13). The connecting block (13) is embedded in the positioning groove (14). The connecting plates (15) that are fixedly connected to the pressure plate (4) are provided on both sides of the connecting block (13).

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