A positioning tool with easy chip removal for broaching machine

Abstract

The utility model provides a kind of positioning tooling of easy chip removal for broaching machine, including processing table, fixed chuck plate, push material disc and floating chuck plate;The fixed chuck plate is fixedly arranged on the processing table, and the upper surface of the fixed chuck plate is set into circular table surface shape;The push material disc is slidably installed on the processing table, and the push material disc is located above the fixed chuck plate, and the bottom surface of the push material disc is provided with air blowing hole for blowing off chip located on the fixed chuck plate;The floating chuck plate is slidably installed on the push material disc along vertical direction, and the floating chuck plate is used for clamping and fixing workpiece, and the floating chuck plate has first state and second state.The utility model sets up circular table surface shape inclined plane on fixed chuck plate, and cooperates with the chip removal airflow blown by air blowing hole, can quickly and timely clean the chip on fixed chuck plate, effectively reduce the scratch of chip to workpiece surface, while guarantee the machining precision of workpiece, with the characteristics of simple structure, convenient operation.

Description

Technical Field

[0001] This invention relates to the field of positioning tooling technology, and more specifically to a positioning tooling for broaching machines that facilitates chip removal. Background Technology

[0002] A broaching machine is a machine tool that uses a broach as a cutting tool to machine through holes, planes, and shaped surfaces of workpieces. Broaching can achieve high dimensional accuracy and low surface roughness, has high productivity, and is suitable for mass production. Most broaching machines only have the broach performing the main linear broaching motion, without a feed motion. Based on the machined surface, broaching machines can be divided into internal broaching machines and external broaching machines. Internal broaching machines are used for broaching internal surfaces, such as spline holes and square holes. The workpiece is placed against the end plate or on a platform, and the transmission device carries the broach in a linear motion, with the main slide and auxiliary slide feeding the broach. Internal broaching machines are available in horizontal and vertical types. The former is more widely used and can machine large workpieces, but requires a larger floor space; the latter has a smaller floor space, but the broach stroke is limited.

[0003] However, the debris generated during the operation of the broaching machine tends to accumulate on the machining table, which can easily scratch the surface of the workpiece and affect the machining quality, thus presenting certain defects.

[0004] In view of the above, this application is hereby submitted. Summary of the Invention

[0005] The purpose of this invention is to provide a positioning fixture for broaching machines that facilitates chip removal, in order to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: Embodiments of the present invention provide a positioning fixture for a broaching machine that facilitates chip removal, including a processing table, a fixed faceplate, a pusher plate, and a floating faceplate; The fixed flower plate is fixedly disposed on the processing table, and the upper surface of the fixed flower plate is configured as a frustum shape. The pusher plate is slidably mounted on the processing table, and the pusher plate is located above the fixed flower plate. The bottom surface of the pusher plate is provided with air blowing holes for blowing away debris located on the fixed flower plate. The floating disc is slidably mounted on the pusher plate in the vertical direction. The floating disc is used to clamp and fix the workpiece to be processed. The floating disc has a first state and a second state. When the floating flower plate is in the first state, the floating flower plate abuts against the fixed flower plate, and there is no vertical contact between the floating flower plate and the pusher plate; When the floating flower plate is in the second state, the floating flower plate is not in contact with the fixed flower plate, and the floating flower plate is mounted on the pusher plate.

[0007] Furthermore, the pusher plate has an air chamber inside, and the air chamber is connected to the air blowing hole. The air chamber is connected to an airflow interface, and the airflow interface is fixedly installed on the side wall of the pusher plate.

[0008] Furthermore, multiple air blowing holes are provided, and the multiple air blowing holes are evenly distributed in a circular pattern on the bottom surface of the pusher plate.

[0009] Furthermore, a linear guide rail is fixedly installed on the processing table, and a movable slide is movably arranged on the linear guide rail, with the movable slide fixedly installed on the bottom surface of the pusher plate.

[0010] Furthermore, a pusher cylinder is installed between the pusher plate and the processing table, and the pusher cylinder is used to push the pusher plate to move along the linear guide rail.

[0011] Furthermore, a mounting bracket is fixedly installed on the pusher cylinder, and two proximity switches are provided on the mounting bracket. The pusher plate is provided with a limit stop bar that matches the proximity switches.

[0012] The above-described solution of the present invention has at least the following beneficial effects: This invention, by setting a truncated cone-shaped inclined surface on a fixed flower plate and using the airflow blown out by the air hole, can quickly and timely clean up the debris on the fixed flower plate, effectively reducing the scratches on the surface of the workpiece by the debris, while ensuring the processing accuracy of the workpiece. It has the characteristics of simple structure and convenient operation. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure of a positioning fixture for a broaching machine that facilitates chip removal, provided by this utility model; Figure 2 A front view schematic diagram of a positioning fixture for a broaching machine that facilitates chip removal, provided by this utility model; Figure 3 A schematic diagram of the bottom structure of the pusher plate of a positioning fixture for a broaching machine that facilitates chip removal, provided by this utility model.

[0014] Explanation of reference numerals in the attached figures: 1. Processing table; 2. Fixed tray; 3. Pusher tray; 4. Floating tray; 5. Air blowing hole; 6. Airflow interface; 7. Linear guide rail; 8. Moving slide; 9. Pusher cylinder; 10. Mounting bracket; 11. Proximity switch; 12. Limit stop bar. Detailed Implementation

[0015] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0016] like Figures 1 to 3 As shown, an embodiment of the present invention provides a positioning fixture for a broaching machine that facilitates chip removal, including a processing table 1, a fixed faceplate 2, a pusher plate 3, and a floating faceplate 4.

[0017] Specifically, the fixed flower plate 2 is fixedly mounted on the processing table 1, and the upper surface of the fixed flower plate 2 is configured as a frustum.

[0018] The pusher plate 3 is slidably mounted on the processing table 1, and the pusher plate 3 is located above the fixed flower plate 2. The bottom surface of the pusher plate 3 is provided with an air blowing hole 5 for blowing away the debris located on the fixed flower plate 2.

[0019] The floating disc 4 is slidably mounted on the pusher disc 3 in a vertical direction. The floating disc 4 is used to clamp and fix the workpiece to be processed. The floating disc 4 has a first state and a second state: When the floating flower plate 4 is in the first state, the floating flower plate 4 abuts against the fixed flower plate 2, and there is no vertical contact between the floating flower plate 4 and the pusher plate 3.

[0020] When the floating flower plate 4 is in the second state, the floating flower plate 4 is not in contact with the fixed flower plate 2, and the floating flower plate 4 is mounted on the pusher plate 3.

[0021] In this embodiment, when the workpiece needs to be processed, firstly, the pusher plate 3 is driven to move the floating face plate 4 to the outside of the fixed face plate 2, at which point the floating face plate 4 is in its second state. Then, the workpiece is clamped and fixed onto the floating face plate 4, completing the fixation of the workpiece. Next, the pusher plate 3 is pushed so that the floating face plate 4 is directly above the fixed face plate 2, at which point the bottom surface of the floating face plate 4 abuts against the upper surface of the fixed face plate 2, and the floating face plate 4 is in its first state. Finally, the broaching machine processes the workpiece. During the processing, the debris falls onto the upper surface of the fixed face plate 2. At this time, the air blowing hole 5 below the pusher plate 3 can blow the debris along the inclined surface of the fixed face plate 2, effectively solving the problem of debris accumulation.

[0022] It should be noted that the floating disc 4 is slidably mounted on the pusher disc 3 in the vertical direction and is used for processing in the first state. The floating disc 4 and the pusher disc 3 have no support contact in the vertical direction. The workpiece to be processed is supported and clamped by the fixed disc 2 and the moving disc, which can effectively reduce the wear of the pusher disc 3 and extend its service life.

[0023] Furthermore, the pusher plate 3 has an air chamber inside, and the air chamber is connected to the air blowing hole 5. The air chamber is connected to an airflow interface 6, and the airflow interface 6 is fixedly installed on the side wall of the pusher plate 3.

[0024] In this embodiment, multiple air holes 5 are provided, and the multiple air holes 5 are evenly distributed in a circular pattern on the bottom surface of the pusher plate 3.

[0025] An air supply is connected to the air source via a pipe at airflow interface 6, which blows air into the air chamber. Subsequently, the gas is discharged from the air blowing hole 5. The airflow can blow out the debris generated during the broaching process, and the debris slides down the inclined surface of the fixed faceplate 2, effectively solving the problem of debris accumulation in the broaching machine.

[0026] Furthermore, a linear guide rail 7 is fixedly installed on the processing table 1, and a movable slide 8 is movably arranged on the linear guide rail 7, and the movable slide 8 is fixedly installed on the bottom surface of the pusher plate 3.

[0027] In this embodiment, a pusher cylinder 9 is installed between the pusher plate 3 and the processing table 1. The pusher cylinder 9 is used to push the pusher plate 3 to move along the linear guide rail 7.

[0028] During the loading and unloading operations of the workpieces to be processed, the pusher cylinder 9 pushes the pusher plate 3 to move along the linear guide rail 7. When the pusher cylinder 9 pushes the pusher plate 3 away from the fixed faceplate 2, the floating faceplate 4 is in the second state, and the loading and unloading operations of the workpieces to be processed can be performed. When the pusher cylinder 9 pushes the pusher plate 3 directly above the fixed faceplate 2, the floating faceplate 4 is in the first state, and the broaching machine performs the processing operation on the workpieces to be processed at this time.

[0029] To facilitate precise position control of the floating plate 4, a mounting bracket 10 is fixedly installed on the pusher cylinder 9. Two proximity switches 11 are mounted on the mounting bracket 10, and a limit stop bar 12 matching the proximity switches 11 is provided on the pusher plate 3. The two proximity switches 11 are respectively positioned at the stop positions when the floating plate 4 is in the first and second states. The floating plate 4 can switch between these two positions, ensuring the stability of the workpiece during processing on the broaching machine table.

[0030] Unlike existing technologies, this utility model has at least the following beneficial effects: This invention, by setting a truncated cone-shaped inclined surface on a fixed flower plate and using the airflow blown out by the air hole, can quickly and timely clean up the debris on the fixed flower plate, effectively reducing the scratches on the surface of the workpiece by the debris, while ensuring the processing accuracy of the workpiece. It has the characteristics of simple structure and convenient operation.

[0031] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A positioning fixture for a broaching machine that facilitates chip removal, characterized in that, It includes a processing table (1), a fixed flower plate (2), a pusher plate (3), and a floating flower plate (4); The fixed flower plate (2) is fixedly set on the processing table (1), and the upper surface of the fixed flower plate (2) is set into a frustum shape; The pusher plate (3) is slidably installed on the processing table (1), and the pusher plate (3) is located above the fixed flower plate (2). The bottom surface of the pusher plate (3) is provided with an air blowing hole (5) for blowing away the debris located on the fixed flower plate (2). The floating disc (4) is slidably mounted on the pusher disc (3) in the vertical direction. The floating disc (4) is used to clamp and fix the workpiece to be processed. The floating disc (4) has a first state and a second state. When the floating flower plate (4) is in the first state, the floating flower plate (4) abuts against the fixed flower plate (2), and there is no vertical contact between the floating flower plate (4) and the pusher plate (3); When the floating flower plate (4) is in the second state, the floating flower plate (4) is not in contact with the fixed flower plate (2), and the floating flower plate (4) is mounted on the push plate (3).

2. The positioning fixture for a broaching machine with easy chip removal according to claim 1, characterized in that: The pusher plate (3) has an air chamber inside, and the air chamber is connected to the air blowing hole (5). The air chamber is connected to an airflow interface (6), and the airflow interface (6) is fixedly installed on the side wall of the pusher plate (3).

3. The positioning fixture for a broaching machine with easy chip removal according to claim 2, characterized in that: The air blowing holes (5) are provided in multiple ways, and the multiple air blowing holes (5) are evenly distributed in a circle on the bottom surface of the pusher plate (3).

4. The positioning fixture for a broaching machine with easy chip removal according to claim 1, characterized in that: A linear guide rail (7) is fixedly installed on the processing table (1), and a movable slide (8) is movably arranged on the linear guide rail (7), and the movable slide (8) is fixedly installed on the bottom surface of the pusher plate (3).

5. A positioning fixture for a broaching machine with easy chip removal according to claim 4, characterized in that: A pusher cylinder (9) is installed between the pusher plate (3) and the processing table (1). The pusher cylinder (9) is used to push the pusher plate (3) to move along the linear guide rail (7).

6. A positioning fixture for a broaching machine with easy chip removal according to claim 5, characterized in that: The pusher cylinder (9) is fixedly mounted with a mounting bracket (10), and the mounting bracket (10) is provided with two proximity switches (11), and the pusher plate (3) is provided with a limit stop (12) that matches the proximity switch (11).

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