Special fixture for milling adapter

Abstract

A special fixture for adapter milling belongs to the technical field of special fixtures for milling machines. The special mounting seat is arranged, the bearing saddle ring belt in the bearing saddle is positioned through the semi-arc positioning block, the two sides of the bearing saddle are pressed through cooperation with the overturning pressing plates on the two sides, the position of the bearing saddle is limited through the semi-arc positioning block, and the consistency of the position of the bearing saddle after clamping each time can be achieved; therefore, repeated positioning after each clamping is avoided, and the milling efficiency of the adapter can be further improved; by increasing the length of the mounting seat, a plurality of adapters can be clamped on the mounting seat at the same time, and the adapters can be clamped by stretching out of the stretching oil cylinder and clamping at the same time, so that a plurality of adapters can be clamped and machined at one time, and the milling efficiency of the adapters is further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of special fixtures for milling machines, and in particular relates to a special fixture for bearing saddle milling. Background Art

[0002] Railway freight cars generally consist of a car body, bogie, brake device, coupler buffer device, etc. Among them, the function of the bogie is to support the car body, guide the vehicle along the track, and bear various loads from the car body and the track. The load saddle is installed between the freight car bearing and the side frame guide frame, bearing and transmitting various loads. This component will have a great impact on the dynamic performance of the vehicle.

[0003] The existing load-bearing saddles for trucks mainly include structures such as the top plate of the load-bearing saddle, the load-bearing saddle ring belt, the load-bearing saddle stop and the thrust shoulder. The top plate of the load-bearing saddle is in contact with the top surface of the side frame guide frame to play a supporting role. During the operation of the vehicle, the entire top plate of the load-bearing saddle is completely in close contact with the top surface of the side frame, so that the top plate of the load-bearing saddle needs to have a higher degree of flatness. Since the load-bearing saddles are mostly cast parts, when traditional milling machines are used for processing, it is difficult to clamp multiple load-bearing saddles at the same time using the transmission bench vise or pressure plate clamping method, and after clamping is completed, the clamping accuracy is difficult to achieve, resulting in the need for repositioning during each processing, which makes it difficult to improve the processing efficiency. Summary of the invention

[0004] The present invention mainly solves the technical problems existing in the above-mentioned prior art and provides a special fixture for bearing saddle milling.

[0005] The above-mentioned technical problems of the present invention are mainly solved through the following technical solutions: a special fixture for milling a bearing saddle, comprising a mounting seat connected to the worktable of a milling machine, a semi-circular arc positioning block is provided in the middle position of the front side surface of the mounting seat, a semi-circular arc groove is provided in the middle position of the bearing saddle, the semi-circular arc positioning block on the mounting seat is clamped into the bearing saddle for positioning, two mounting grooves are provided on the upper and lower sides of the mounting seat, a bracket is provided on the front surface of the mounting seat corresponding to the left and right sides of the mounting groove, a flip pressure plate is provided between the two brackets, the flip pressure plate is rotatably connected to the two brackets, a cylinder mounting seat is provided on the rear surface of the mounting seat corresponding to the mounting groove, an extending cylinder is provided on the cylinder mounting seat, a top block is connected to the extending end of the extending cylinder, and the front end of the top block cooperates with the flip pressure plate.

[0006] Preferably, the front end of the top block is an inclined surface, and the angle between the inclined surface and the surface of the cylinder mounting seat is an acute angle.

[0007] Preferably, the flip pressure plate includes two mating surfaces, and when the flip pressure plate presses the load-bearing saddle, the mating surface mating with the load-bearing saddle is parallel to the front surface of the mounting seat.

[0008] Preferably, the oil cylinder is extended to eject the flip pressure plate through the top block, and when the matching surface in the flip pressure plate presses the load-bearing saddle, the inclined surface on the top block fits with another matching surface to achieve the pressing of the load-bearing saddle.

[0009] Preferably, a spring connecting ear is provided at one end of the flip pressure plate away from the semicircular arc positioning block and at the top of the top block, and a spring is connected between the spring connecting ear on the flip pressure plate and the spring connecting ear on the top block.

[0010] The beneficial effects of the present invention are as follows: a special mounting seat is provided, a semi-circular arc positioning block is used to position the bearing saddle ring belt in the bearing saddle, and the two sides of the bearing saddle are pressed together with the flip pressure plates on both sides, and the position of the bearing saddle is limited by the semi-circular arc positioning block, so that the consistency of the position of the bearing saddle after each clamping can be achieved, thereby avoiding repeated positioning after each clamping, and the milling efficiency of the bearing saddle can be further improved; by increasing the length of the mounting seat, multiple bearing saddles can be clamped on the mounting seat at the same time, and the extension cylinder is used to extend and multiple bearing saddles are clamped at the same time, so that multiple bearing saddles can be clamped and processed at one time, and the milling efficiency of the bearing saddle can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present invention;

[0012] Figure 2 It is a structural schematic diagram of the rear side of the present invention.

[0013] In the figure: 1. mounting seat; 2. semicircular arc positioning block; 3. mounting groove; 4. bracket; 5. flip pressure plate; 6. cylinder mounting seat; 7. extending cylinder; 8. top block; 9. matching surface; 10. spring connecting ear; 11. spring. DETAILED DESCRIPTION

[0014] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0015] Embodiment: A special fixture for bearing saddle milling, such as Figure 1-Figure 2As shown, it includes a mounting seat 1 connected to the workbench of the milling machine, a semi-circular arc positioning block 2 is provided in the middle position of the front side surface of the mounting seat 1, a semi-circular arc groove is provided in the middle position of the bearing saddle, the semi-circular arc positioning block 2 on the mounting seat 1 is snapped into the bearing saddle for positioning, two mounting grooves 3 are provided on the upper and lower sides of the mounting seat 1, a bracket 4 is provided on the front surface of the mounting seat 1 corresponding to the left and right sides of the mounting groove 3, a flip pressure plate 5 is provided between the two brackets 4, the flip pressure plate 5 is rotatably connected to the two brackets 4, a cylinder mounting seat 6 is provided on the rear surface of the mounting seat 1 corresponding to the mounting groove 3, an extending cylinder 7 is provided on the cylinder mounting seat 6, and a top block 8 is connected to the extending end of the extending cylinder 7, and the front end of the top block 8 cooperates with the flip pressure plate 5.

[0016] The front end of the top block 8 is an inclined surface, and the angle between the inclined surface and the surface of the cylinder mounting seat 6 is an acute angle.

[0017] The flip pressure plate 5 includes two matching surfaces 9 . When the flip pressure plate 5 presses the load-bearing saddle, the matching surface 9 matching with the load-bearing saddle is parallel to the front surface of the mounting seat 1 .

[0018] The extending oil cylinder 7 extends out through the top block 8 to eject the flip pressure plate 5. When the matching surface 9 in the flip pressure plate 5 presses the load-bearing saddle, the inclined surface on the top block 8 fits with another matching surface 9 to achieve the pressing of the load-bearing saddle.

[0019] A spring connecting ear 10 is provided at one end of the flip pressure plate 5 away from the semicircular arc positioning block 2 and at the top of the top block 8 , and a spring 11 is connected between the spring connecting ear 10 on the flip pressure plate 5 and the spring connecting ear 10 on the top block 8 .

[0020] The principle of the present invention is as follows: when in use, the mounting base 1 is installed on the workbench of the milling machine, and the mounting surface of the mounting base 1 is perpendicular to the main axis direction. When processing multiple parts at the same time, multiple groups can be installed in parallel. When installing the load-bearing saddle, the load-bearing saddle ring belt of the load-bearing saddle is clamped on the semicircular arc positioning block 2 for limiting the position, and the four extending cylinders 7 are controlled to extend, and the top block 8 is used to push the flip pressure plate 5 to drive the flip pressure plate 5 to rotate, and the flip pressure plate 5 is used to press the two sides of the load-bearing saddle. When the load-bearing saddle needs to be removed, the extending cylinder 7 is controlled to retract, driving the top block 8 to retract, and the flip pressure plate 5 is pulled by the spring 11 to flip, thereby releasing the load-bearing saddle.

[0021] Finally, it should be pointed out that the above embodiments are only representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention should be considered to belong to the protection scope of the present invention.

Claims

1. A special fixture for saddle milling, comprising a mounting seat (1) connected to a milling machine table, characterized in that: A semicircular arc positioning block (2) is provided in the middle position of the front side surface of the mounting seat (1), and a semicircular arc groove is provided in the middle position of the bearing saddle. The semicircular arc positioning block (2) on the mounting seat (1) is inserted into the bearing saddle for positioning. Two mounting grooves (3) are provided on the upper and lower sides of the mounting seat (1). A bracket (4) is provided on the front surface of the mounting seat (1) corresponding to the left and right sides of the mounting groove (3). A flip pressure plate (5) is provided between the two brackets (4). The flip pressure plate (5) is rotatably connected to the two brackets (4). A cylinder mounting seat (6) is provided on the rear surface of the mounting seat (1) corresponding to the mounting groove (3). An extending cylinder (7) is provided on the cylinder mounting seat (6). A top block (8) is connected to the extending end of the extending cylinder (7). The front end of the top block (8) cooperates with the flip pressure plate (5).

2. A special fixture for bearing saddle milling according to claim 1, characterized in that: The front end of the top block (8) is an inclined surface, and the angle between the inclined surface and the surface of the oil cylinder mounting seat (6) is an acute angle.

3. A special fixture for load-bearing saddle milling according to claim 1, characterized in that: The flip pressure plate (5) comprises two matching surfaces (9). When the flip pressure plate (5) is pressed against the load-bearing saddle, the matching surface (9) matching with the load-bearing saddle is parallel to the front surface of the mounting seat (1).

4. The special fixture for bearing saddle milling according to claim 1, characterized in that: The extension cylinder (7) extends through the top block (8) to push out the flip pressure plate (5). When the matching surface (9) in the flip pressure plate (5) presses the load-bearing saddle, the inclined surface on the top block (8) fits with another matching surface (9) to achieve the pressing of the load-bearing saddle.

5. The special fixture for bearing saddle milling according to claim 1, characterized in that: A spring connecting ear (10) is provided at one end of the flip pressure plate (5) away from the semicircular arc positioning block (2) and at the top of the top block (8), and a spring (11) is connected between the spring connecting ear (10) on the flip pressure plate (5) and the spring connecting ear (10) on the top block (8).

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