Connecting flange face milling jig

Abstract

The utility model relates to the technical field of flange jigs, in particular to a connecting flange face milling jig which comprises a base, a first clamping point, a positioning column, a second clamping point and three first sliding grooves, the positioning column is fixed in the middle of the base, the first sliding grooves are arranged outwards in the radial direction of the positioning column, and the second clamping point is arranged between the first clamping point and the second clamping point. The three first sliding grooves are evenly distributed in the circumferential direction of the positioning column, and the first clamping points are installed on the first sliding grooves. The three second clamping points are evenly distributed in the positioning column in the circumferential direction, and the three second clamping points correspond to the three first clamping points. According to the utility model, the defects in the prior art are overcome, through the first clamping point and the second clamping point, the second clamping point can adapt to the diameter change of various flange convex surfaces, a new die does not need to be replaced and manufactured according to the diameter change of the flange convex surfaces, the number of manufactured dies is reduced, the production and processing cost is reduced, and the production preparation time is shortened; the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flange fixtures, and specifically relates to a connecting flange milling surface fixture. Background Art

[0002] The cam divider flange is one of the components of the cam divider, which is used to provide sealing and protection at the rotating shaft and achieve detachable connection. Most flanges are die-castings, and during their production and processing, end-face drilling and end-face milling operations are required.

[0003] During drilling and milling operations, fixtures are required for positioning. Most of the existing positioning fixtures use methods such as pressing blocks, bolts, or air cylinders for clamping. However, the positioning mechanisms of the above positioning methods are all located at the top of the flange workpiece, so they may interfere with the drilling and milling operations of the flange workpiece, and there are many inconveniences in the actual processing process.

[0004] Chinese Patent: CN215146805U discloses a cam divider flange positioning fixture, which includes a base plate, arc-shaped side plates, locking bolts, inner support sliders, screw rods, and supporting round platforms; a positioning seat is arranged on the base plate, the arc-shaped side plates are located at the edges of the upper end of the positioning seat, the arc-shaped side plates are arranged oppositely, the horizontal cross-section of the arc-shaped side plates is arc-shaped, side plates are arranged on both sides of the arc-shaped side plates, and the locking bolts connect the side plates; a central positioning column is coaxially arranged on the positioning seat, the inner support slider is located in the sliding groove on the central positioning column, the screw rod is located in the threaded hole on the central positioning column, the supporting round platform is coaxially connected to the bottom end of the screw rod, and the supporting round platform corresponds to the position of the inner support slider. However, in this structure, the curvature of the arc-shaped side plates needs to be selected according to the diameter of the convex surface of the flange, which is not suitable for processing flanges of multiple specifications, and the two internal clamping points are likely to cause deformation of the convex surface of the flange. Summary of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the utility model provides a connecting flange milling surface fixture, which overcomes the deficiencies of the existing technology and aims to solve the problems of fixing the convex surface of flanges of multiple sizes and preventing deformation in the existing connecting flange milling surface fixture.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A connecting flange milling surface fixture includes a base, a first clamping point, a positioning column, a second clamping point, and a first sliding groove. The positioning column is fixed in the middle of the base, the first sliding groove is arranged radially outward along the positioning column, there are three first sliding grooves, and the three first sliding grooves are evenly distributed circumferentially around the positioning column. The first clamping point is installed on the first sliding groove; the three second clamping points are evenly distributed circumferentially inside the positioning column, and the three second clamping points are arranged corresponding to the three first clamping points.

[0007] During operation, move the first clamping point outward, place the flange on the positioning post of the workbench with the end face facing upward, make the upper end face of the positioning rod abut against the lower part of the flange end face, let the positioning post pass through the inner diameter of the convex surface of the flange to limit the displacement of the flange, rotate the adjusting rod, the adjusting rod drives the adjusting block to move downward, the adjusting block pushes the top block to move outward, the three top blocks move simultaneously, automatically adjust the position of the flange and conduct preliminary fixation, then move the first clamping point to contact the outer diameter surface of the convex surface of the flange, insert the limiting rod into the limiting groove, adjust the position of the adjusting cam to fix the distance between the limiting rod and the bracket. If the limiting rod does not match the limiting groove, rotate the adjusting cam to change the distance between the limiting rod and the bracket, and then insert the limiting rod into the limiting groove to achieve the positioning of the flange end face.

[0008] As a preferred technical solution of the present utility model, the first clamping point includes: a positioning rod, a clamping base, a reinforcing part and a braking device. The positioning rod is arranged at the front end of the clamping base, the reinforcing part is connected to the positioning rod and the clamping base, and the braking device is arranged at the tail end of the clamping base and cooperates with the first sliding groove for braking.

[0009] As a preferred technical solution of the present utility model, the braking device includes: a bracket, a limiting rod, an adjusting cam and an elastic element. The limiting rod is arranged at the tail end of the bracket, two elastic elements are connected between the limiting rod and the bracket, the adjusting cam is arranged between the two elastic elements, and the adjusting cam is fixedly connected to the bracket.

[0010] As a preferred technical solution of the present utility model, the first sliding groove includes: a slideway and a limiting groove. The limiting groove is arranged on both sides of the slideway and cooperates with the limiting rod.

[0011] As a preferred technical solution of the present utility model, the second clamping point includes: a top block, an adjusting rod and an adjusting block. The adjusting rod is connected to the bottom of the adjusting block. The adjusting block is provided with three circumferentially evenly distributed inclined surfaces, one end of the adjusting block is an inclined surface, and the adjusting block cooperates with the top block to fix the inner diameter surface of the convex surface of the flange.

[0012] As a preferred technical solution of the present utility model, the second clamping point is arranged inside the positioning post. The top blocks are circumferentially evenly distributed on the positioning post, the inclined surfaces of the top blocks face inward and are connected in cooperation with the adjusting block. The adjusting block is arranged in the inner cavity of the positioning post, the bottom of the adjusting block faces upward, and the adjusting rod is fixedly connected to the internal threaded hole of the positioning post. The height of the positioning rod is higher than that of the positioning post.

[0013] As a preferred technical solution of the present utility model, the height of the positioning rod is L1, the height of the adjusting rod is L2, and L1 > L2.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. Through the first clamping point and the second clamping point, the second clamping point can adapt to the changes in the diameters of various flange convex surfaces, eliminating the need to replace and manufacture new molds according to the changes in the flange convex surface diameters, reducing the number of molds to be manufactured, lowering the production and processing costs, reducing the production preparation time, and improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 is a top view of the positioning post of the utility model;

[0018] Figure 3 is a cross-sectional view of the positioning post of the utility model;

[0019] In the figure: 1, base; 2, first clamping point; 201, positioning rod; 202, clamping base; 203, reinforcing part; 204, braking device; 2041, bracket; 2042, limiting rod; 2043, adjusting cam; 2044, elastic element; 3, positioning post; 301, cavity; 4, second clamping point; 401, top block; 402, adjusting rod; 403, adjusting block; 5, first chute; 501, slideway; 502, limiting groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-3 , the present utility model provides the following technical solutions: A connecting flange milling fixture includes a base 1, a first clamping point 2, a positioning post 3, a second clamping point 4, and a first chute 5. The positioning post 3 is fixed in the middle of the base 1. The first chute 5 is arranged radially outward along the positioning post 3. There are three first chutes 5, and the three first chutes 5 are evenly distributed circumferentially around the positioning post 3. The first clamping point 2 is installed on the first chute 5; the three second clamping points 4 are circumferentially evenly distributed inside the positioning post 3, and the three second clamping points 4 are arranged corresponding to the three first clamping points 2.

[0022] During operation, the first clamping point 2 is moved outwards, and the flange is placed on the positioning post 3 of the workbench with the end face facing upwards. The upper end face of the positioning rod 201 abuts against the lower part of the flange end face. The positioning post 3 passes through the inner diameter of the flange convex surface to limit the displacement of the flange. The adjusting rod 402 is rotated, and the adjusting rod 402 drives the adjusting block 403 to move downwards. The adjusting block 403 pushes the top block 401 outwards. The three top blocks 401 move simultaneously to automatically adjust the position of the flange and perform preliminary fixation. Then, the first clamping point 2 is moved to contact the outer diameter surface of the flange convex surface. The limiting rod 2042 is inserted into the limiting groove 502, and the adjusting cam 2043 adjusts the position to fix the distance between the limiting rod 2042 and the bracket 2041. If the limiting rod 2042 does not match the limiting groove 502, the adjusting cam 2043 is rotated to change the distance between the limiting rod 2042 and the bracket 2041, and then the limiting rod 2042 is inserted into the limiting groove 502 to achieve the positioning of the flange end face.

[0023] By setting the first clamping point 2 and the second clamping point 4 in this way, the first clamping point 2 can adapt to the changes in the diameters of various flange convex surfaces, eliminating the need to replace and manufacture new molds according to the changes in the flange convex surface diameters, reducing the number of mold productions, lowering the production and processing costs, reducing the production preparation time, and improving the work efficiency. At the same time, the three-point positioning can make the outer diameter surface of the flange convex surface receive uniform action, preventing the deformation or damage of the flange convex surface, significantly enhancing the structural stability, reducing the errors generated during the processing and assembly processes, improving the clamping and positioning accuracy and stability, and the corresponding setting of the first clamping point 2 and the second clamping point 4 can increase the clamping force, avoiding the deformation of the flange convex surface caused by the clamping force and further improving the product quality.

[0024] Specifically, the first clamping point 2 includes: a positioning rod 201, a clamping base 202, a reinforcing part 203, and a braking device 204. The positioning rod 201 is arranged at the front end of the clamping base 202. The reinforcing part 203 is connected to the positioning rod 201 and the clamping base 202. The braking device 204 is arranged at the tail end of the clamping base 202 and cooperates with the first chute 5 for braking. By setting the positioning rod 201 at the front end in this way, it can better clamp the flange convex surface, avoiding the contact between the clamping base 202 and the flange convex surface, reducing the influence of the processing error of the clamping base 202 on the positioning accuracy, and improving the product processing quality. The reinforcing part 203 can significantly enhance the structural strength of the positioning rod 201, reducing the influence of the impact force during the flange end face processing on the positioning, avoiding the displacement of the flange end face during the processing process, further improving the positioning accuracy, and ensuring the flange end face processing quality.

[0025] Specifically, the braking device 204 includes: a bracket 2041, a limiting rod 2042, an adjusting cam 2043, and an elastic element 2044. The limiting rod 2042 is provided at the tail end of the bracket 2041. Two elastic elements 2044 are connected between the limiting rod 2042 and the bracket 2041. An adjusting cam 2043 is provided between the two elastic elements 2044, and the adjusting cam 2043 is fixedly connected to the bracket 2041. By setting the adjusting cam 2043 in this way, the distance between the limiting rod 2042 and the bracket 2041 can be adjusted, so that the distance between the limiting position and the positioning rod 201 can be adjusted according to the needs of the actual processed product, ensuring the clamping force and the clamping position, improving the positioning accuracy of the flange convex surface, reducing the positioning error, ensuring the flatness of the flange end face, and helping to further improve the product quality.

[0026] Specifically, the first chute 5 includes: a slideway 501 and a limiting groove 502. The limiting groove 502 is provided on both sides of the slideway 501 and cooperates with the limiting rod 2042. By setting the slideway 501 and the limiting groove 502 in this way, the first chute 5 has a simple structure and quick operation, facilitating the rapid movement of the first clamping point 2 in the slideway 501, avoiding collision due to the relative rotation between the limiting groove 502 and the first clamping point 2, affecting the adjustment tooling speed, reducing the tooling adjustment time, and improving the work efficiency.

[0027] Specifically, the second clamping point 4 includes: a top block 401, an adjusting rod 402, and an adjusting block 403. The adjusting rod 402 is connected to the bottom of the adjusting block 403. The adjusting block 403 is provided with three circumferentially evenly distributed inclined planes. One end of the adjusting block 403 is an inclined plane, and the adjusting block 403 cooperates with the top block 401 to fix the inner diameter surface of the flange convex surface. By setting the adjusting block 403 in this way, when the adjusting rod 402 moves, three component forces in three directions can be generated to simultaneously adjust the positions of the three top blocks 401, enabling the three top blocks 401 to move quickly, realizing the rapid fixation of the inner diameter of the flange convex surface, improving the positioning accuracy of the flange convex surface at the same time, ensuring that the flange end face is in the working position, and improving the machining accuracy of the flange end face.

[0028] Specifically, the second clamping point 4 is arranged inside the positioning column 3. The top blocks 401 are circumferentially evenly distributed on the positioning column 3. The inclined surfaces of the top blocks 401 face inwards and are connected in cooperation with the adjusting block 403. The adjusting block 403 is arranged in the inner cavity 301 of the positioning column 3, with the bottom of the adjusting block 403 facing upwards. The adjusting rod 402 is fixedly connected to the internal threaded hole of the positioning column 3, and the positioning rod 201 is higher than the positioning column 3. By setting the adjusting rod 402 in this way, after the flange is installed, the adjusting rod 402 is near the inner diameter port of the flange convex surface, facilitating the adjustment of the position of the top block 401, positioning and installing the inner diameter of the flange convex surface, and improving the adjustment speed of the flange tooling.

[0029] Specifically, the height of the positioning rod 201 is L1, and the height of the adjusting rod 402 is L2, where L1 > L2. This height difference setting prevents the height L2 of the adjusting rod 402 from being higher than the height L1 of the positioning rod 201, ensuring that the height of the adjusting rod 402 is lower than the flange end face. Without interference from other parts on the entire flange end face, the milling process can be completed in one pass, avoiding secondary adjustment of the tooling, which is beneficial to improving processing efficiency and reducing processing costs.

[0030] Working principle: During operation, move the first clamping point 2 outwards, place the flange on the positioning post 3 of the workbench with the end face facing upwards. The upper end face of the positioning rod 201 abuts against the lower part of the flange end face, and the positioning post 3 passes through the inner diameter of the flange convex surface to restrict the displacement of the flange. Rotate the adjusting rod 402, which drives the adjusting block 403 to move downwards. The adjusting block 403 pushes the top block 401 outwards. The three top blocks 401 move simultaneously to automatically adjust the position of the flange and perform preliminary fixation. Then move the first clamping point 2 into contact with the outer diameter surface of the flange convex surface. Insert the limiting rod 2042 into the limiting groove 502, and adjust the position of the adjusting cam 2043 to fix the distance between the limiting rod 2042 and the bracket 2041. If the limiting rod 2042 does not match the limiting groove 502, rotate the adjusting cam 2043 to change the distance between the limiting rod 2042 and the bracket 2041, and then insert the limiting rod 2042 into the limiting groove 502 to achieve the positioning of the flange end face.

[0031] Finally, it should be noted that in the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0032] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A flange milling fixture, characterized in that: The invention comprises a base (1), a first clamping point (2), a positioning column (3), a second clamping point (4) and a first slide groove (5), wherein the positioning column (3) is fixed at the middle part of the base (1), the first slide groove (5) is arranged radially outward along the positioning column (3), three first slide grooves (5) are provided, the three first slide grooves (5) are evenly distributed around the positioning column (3), the first clamping point (2) is installed on the first slide groove (5); the three second clamping points (4) are evenly distributed within the positioning column (3) in the circumferential direction, and the three second clamping points (4) are arranged corresponding to the three first clamping points (2).

2. A connecting flange milling jig according to claim 1, characterized in that: The first clamping point (2) comprises: a positioning rod (201), a clamping base (202), a reinforcement part (203) and a braking device (204); the positioning rod (201) is arranged at the front end of the clamping base (202); the reinforcement part (203) is connected to the positioning rod (201) and the clamping base (202); the braking device (204) is arranged at the rear end of the clamping base (202) and cooperates with the first slide groove (5) for braking.

3. A connecting flange milling jig according to claim 2, characterized in that: The braking device (204) comprises: a bracket (2041), a limiting rod (2042), an adjusting cam (2043) and an elastic element (2044); the limiting rod (2042) is arranged at the rear end of the bracket (2041); two elastic elements (2044) are connected between the limiting rod (2042) and the bracket (2041); the adjusting cam (2043) is arranged between the two elastic elements (2044); and the adjusting cam (2043) is fixedly connected to the bracket (2041).

4. The connecting flange milling jig according to claim 3, characterized in that: The first slide groove (5) comprises: a slideway (501) and a limiting groove (502), wherein the limiting groove (502) is arranged on both sides of the slideway (501) and cooperates with the limiting rod (2042).

5. The connecting flange milling jig according to claim 2, characterized in that: The second clamping point (4) comprises: a top block (401), an adjusting rod (402) and an adjusting block (403); the adjusting rod (402) is connected to the bottom of the adjusting block (403); the adjusting block (403) is provided with three inclined surfaces evenly distributed in the circumferential direction; one end of the adjusting block (403) is an inclined surface; the adjusting block (403) cooperates with the top block (401) to fix the inner diameter surface of the flange convex surface.

6. The connecting flange milling jig according to claim 5, characterized in that: The second clamping point (4) is arranged inside the positioning column (3); the top block (401) is evenly distributed around the positioning column (3); the inclined surface of the top block (401) faces inward and is connected with the adjustment block (403); the adjustment block (403) is arranged in the internal cavity (301) of the positioning column (3); the bottom of the adjustment block (403) is arranged upward; the adjustment rod (402) is fixedly connected to the internal threaded hole of the positioning column (3); and the height of the positioning rod (201) is higher than that of the positioning column (3).

7. The connecting flange milling jig according to claim 6, characterized in that: The height of the positioning rod (201) is L1, the height of the adjustment rod (402) is L2, and L1>L2.

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