A hinge-specific broaching machine

Abstract

This invention discloses a broaching machine specifically for hinges, comprising a frame, a control box, a broach drive mechanism, a broach, a clamping mechanism, and a multi-station fixed fixture. The broach drive mechanism includes a cutting hydraulic cylinder, a front guide rod, a rear guide rod, a front guide support column, and a rear guide support column. One end of the rear guide rod passes through the rear guide support column and is fixedly connected to one end of the broach. The other end of the broach is fixedly connected to one end of the front guide rod. The other end of the front guide rod passes through the front guide support column and is connected to the telescopic end of the cutting hydraulic cylinder. The cutting section of the broach has at least three cutting surfaces. The cutting hydraulic cylinder is fixed to the frame. The clamping mechanism includes an upper clamping rod, a fixed plate, and a lifting cylinder. The lifting cylinder is fixed to the frame and fixedly connected to the fixed plate. The fixed plate and the upper clamping rod are arranged opposite each other. The multi-station fixed fixture is disposed between the fixed plate and the upper clamping rod. Using the above-mentioned broaching machine specifically for hinges, the cost is low, and multiple surfaces of multiple hinges can be processed at once, improving work efficiency.

Description

Technical Field

[0001] This invention relates to hinge processing equipment, and more particularly to a broaching machine specifically for hinges. Background Technology

[0002] Automotive door hinges are one of the important components of a car, and the requirements for dimensional processing are relatively high. The processing dimensions directly affect the opening and closing angles of the car door. In order to ensure the processing accuracy of the hinges, the existing technology uses CNC machining centers for processing, which has high equipment costs and can only process one part at a time, resulting in low work efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a broaching machine specifically for hinges, which is low in cost and can process multiple surfaces of multiple hinges at one time, thereby improving work efficiency.

[0004] To achieve the above objectives, the present invention provides a hinge-specific broaching machine, including a frame, a control box, a broach drive mechanism, a broach, a clamping mechanism, and a multi-station fixed fixture;

[0005] The broach drive mechanism includes a cutting hydraulic cylinder, a front guide rod, a rear guide rod, a front guide support column, and a rear guide support column. One end of the rear guide rod passes through the rear guide support column and is fixedly connected to one end of the broach. The other end of the broach is fixedly connected to one end of the front guide rod. The other end of the front guide rod passes through the front guide support column and is connected to the telescopic end of the cutting hydraulic cylinder. The cutting section of the broach has at least three cutting surfaces. The cutting hydraulic cylinder is fixed to the frame.

[0006] The clamping mechanism includes an upper clamping rod, a fixed plate, and a lifting cylinder. The lifting cylinder is fixed on the frame and fixedly connected to the fixed plate. The fixed plate is arranged opposite to the upper clamping rod. The multi-station fixing fixture is arranged between the fixed plate and the upper clamping rod.

[0007] Preferably, the frame is provided with guide posts, which pass through guide holes in the fixing plate.

[0008] Preferably, the multi-station fixed fixture includes a first positioning plate, a second positioning plate, a lead screw, and a drive motor. The drive motor is installed on one side of the fixed plate and fixedly connected to one end of the lead screw. The lead screw is fixed in the lead screw groove of the fixed plate by a bearing.

[0009] Preferably, the first positioning plate and the second positioning plate are arranged side by side and fixedly connected by a connecting seat. The connecting seat is disposed on the lead screw. Both the first positioning plate and the second positioning plate are provided with a plurality of positioning pin groups arranged side by side, and a fixed electromagnet is disposed in the middle of the positioning pin group.

[0010] Preferably, the upper clamping rod is fixed to the frame by a fixing bracket, the fixing bracket including a column and a mounting plate disposed on the top of the column, and a tapered head is fixed on the top of the upper clamping rod and disposed opposite to the positioning pin.

[0011] Preferably, the bottom of the first positioning plate and the second positioning plate are provided with limit switches, and the middle of the fixed plate is provided with an elastic trigger. The elastic trigger includes a support plate, a spring and a trigger ball. The trigger ball is fixedly connected to one end of the spring, and the other end of the spring is fixedly connected to the support plate. The support plate is threadedly connected to the fixed through hole on the fixed plate.

[0012] Therefore, the present invention provides a hinge-specific broaching machine with the above-mentioned structure. The broach is provided with multiple cutting surfaces, which can process multiple surfaces of the hinge at one time. At the same time, multiple parts are arranged side by side on the first positioning plate and the second positioning plate, which can process multiple parts at one time, thereby improving work efficiency.

[0013] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a hinge-specific broaching machine structure according to the present invention;

[0015] Figure 2 This is a schematic diagram of the multi-station fixed tooling structure of the present invention;

[0016] Figure 3 This is a schematic diagram of the elastic trigger structure of the present invention;

[0017] Figure 4 This is a schematic diagram of the hinge structure of the present invention.

[0018] Figure Labels

[0019] 1. Frame; 11. Guide column; 2. Broach drive mechanism; 21. Cutting hydraulic cylinder; 22. Front guide rod; 23. Rear guide rod; 24. Front guide support column; 25. Rear guide support column; 3. Broach; 4. Fixing frame; 41. Column; 42. Mounting plate; 5. Clamping mechanism; 51. Upper clamping rod; 52. Lifting cylinder; 53. Fixing plate; 6. Multi-station fixed fixture; 61. First positioning plate; 62. Second positioning plate; 63. Connecting seat; 64. Lead screw; 65. Drive motor; 66. Positioning pin; 67. Positioning electromagnet; 7. Control box; 8. Limit switch; 9. Elastic trigger element; 91. Trigger ball; 92. Spring; 93. Support plate; 10. Hinge machining surface. Detailed Implementation

[0020] Example

[0021] Figure 1This is a schematic diagram of a broaching machine structure for hinges according to the present invention. Figure 2 This is a schematic diagram of the multi-station fixed tooling structure of the present invention. Figure 3 This is a schematic diagram of the elastic trigger structure of the present invention. Figure 4 The figure shows a schematic diagram of the hinge structure of the present invention. A hinge-specific broaching machine includes a frame 1, a control box 7, a broaching drive mechanism 2, a broach 3, a clamping mechanism 5, and a multi-station fixed fixture 6.

[0022] The broaching drive mechanism 2 includes a cutting hydraulic cylinder 21, a front guide rod 22, a rear guide rod 23, a front guide support column 24, and a rear guide support column 25. The cutting hydraulic cylinder 21 is fixed to the frame 1. One end of the rear guide rod 23 passes through the rear guide support column 25 and is fixedly connected to one end of the broach 3. The other end of the broach 3 is fixedly connected to one end of the front guide rod 22. The other end of the front guide rod 22 passes through the front guide support column 24 and is connected to the telescopic end of the cutting hydraulic cylinder 21, ensuring the travel accuracy of the broach 3. In this embodiment, the cutting section of the broach 3 is provided with four cutting surfaces, which cut the hinge on three sides.

[0023] The clamping mechanism 5 includes an upper clamping rod 51, a fixing plate 53, and a lifting cylinder 52. The lifting cylinder 52 is fixed on the frame 1 and fixedly connected to the fixing plate 53. The fixing plate 53 is arranged opposite to the upper clamping rod 51. The upper clamping rod 51 is fixed on the frame 1 by a fixing frame 4. The fixing frame 4 includes a column 41 and a mounting plate 42 set on the top of the column.

[0024] A multi-station fixed fixture 6 is positioned between a fixed plate 53 and an upper clamping rod 51. The frame 1 is equipped with guide posts 11, which pass through guide holes in the fixed plate 53 to ensure the rising accuracy of the multi-station fixed fixture 6. The multi-station fixed fixture 6 includes a first positioning plate 61, a second positioning plate 62, a lead screw 64, and a drive motor 65. The drive motor 65 is mounted on one side of the fixed plate 53 and fixedly connected to one end of the lead screw 64. The lead screw 64 is fixed in the lead screw groove of the fixed plate 53 by bearings. The first positioning plate 61 and the second positioning plate 62 are arranged side-by-side and fixedly connected by a connecting seat 63, which is located on the lead screw 64. Several parallel positioning pin groups are provided on both the first positioning plate 61 and the second positioning plate 62. A fixing electromagnet 67 is located in the middle of each positioning pin group to prevent positional displacement of the multi-station fixed fixture 6 during movement. A tapered head is fixed to the top of the upper clamping rod 51 and is positioned opposite to the positioning pins to tighten and fix the hinge. Limit switches 8 are provided at the bottom of the first positioning plate 61 and the second positioning plate 62. An elastic trigger 9 is provided in the middle of the fixed plate 53. The elastic trigger 9 includes a support plate 93, a spring 92 and a trigger ball 91. The trigger ball 91 is fixedly connected to one end of the spring 92, and the other end of the spring 92 is fixedly connected to the support plate 93. The support plate 93 is threadedly connected to the fixed through hole on the fixed plate 53. When the first positioning plate 61 or the second positioning plate 62 reaches the processing position, the limit switch 8 is triggered to perform cutting processing.

[0025] The cutting hydraulic cylinder 21, lifting cylinder 52, drive motor 65, positioning electromagnet 67, and limit switch 8 are all connected to the control box to realize the control of the switch, motor, cylinder, and hydraulic cylinder. The above-mentioned electrical components are common components in this field and will not be described in detail here.

[0026] The operation process is as follows:

[0027] Several hinges are placed on the first positioning plate 61 and the second positioning plate 62. The hinges are initially positioned by locating pins. The fixing electromagnet 67 is activated to prevent the hinges from shifting position. The drive cylinder is activated to move the second positioning plate 62 to the processing position. The lifting cylinder 53 is activated to press the hinges by the upper clamping rod 51. The cutting hydraulic cylinder 21 is activated to pull the broach to cut the several hinges arranged in parallel. After cutting, the cutting hydraulic cylinder 21 is activated to return to the initial position. The drive cylinder is activated to move the first positioning plate 61 to the processing position to cut the hinges on the first positioning plate 61. At the same time, the hinges on the second positioning plate 62 are loaded and unloaded. When unloading, the fixing electromagnet 67 on the second positioning plate 62 is de-energized to facilitate the removal of the hinges. This allows the first positioning plate 61 and the second positioning plate 62 to be processed alternately, improving processing efficiency.

[0028] Therefore, the present invention provides a hinge-specific broaching machine with the above-mentioned structure. The broach is provided with multiple cutting surfaces, which can process multiple surfaces of the hinge at one time. At the same time, multiple parts are arranged side by side on the first positioning plate and the second positioning plate, which can process multiple parts at one time, thereby improving work efficiency.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A hinge-specific broaching machine, comprising a frame and a control box, characterized in that: It also includes a broaching drive mechanism, a broach, a clamping mechanism, and multi-station fixed fixtures; The broach drive mechanism includes a cutting hydraulic cylinder, a front guide rod, a rear guide rod, a front guide support column, and a rear guide support column. One end of the rear guide rod passes through the rear guide support column and is fixedly connected to one end of the broach. The other end of the broach is fixedly connected to one end of the front guide rod. The other end of the front guide rod passes through the front guide support column and is connected to the telescopic end of the cutting hydraulic cylinder. The cutting section of the broach has at least three cutting surfaces. The cutting hydraulic cylinder is fixed to the frame. The clamping mechanism includes an upper clamping rod, a fixed plate, and a lifting cylinder. The lifting cylinder is fixed on the frame and fixedly connected to the fixed plate. The fixed plate is arranged opposite to the upper clamping rod. The multi-station fixing fixture is arranged between the fixed plate and the upper clamping rod. The multi-station fixed fixture includes a first positioning plate, a second positioning plate, a lead screw, and a drive motor. The drive motor is installed on one side of the fixed plate and fixedly connected to one end of the lead screw. The lead screw is fixed in the lead screw groove of the fixed plate by a bearing. The first positioning plate and the second positioning plate are arranged side by side and fixedly connected by a connecting seat. The connecting seat is arranged on the lead screw. Both the first positioning plate and the second positioning plate are provided with a plurality of positioning pin groups arranged side by side. A fixed electromagnet is provided in the middle of the positioning pin group. The upper clamping rod is fixed to the frame by a fixing bracket, the fixing bracket including a column and a mounting plate disposed on the top of the column, and a tapered head is fixed on the top of the upper clamping rod and disposed opposite to the positioning pin; The bottom of the first positioning plate and the second positioning plate are provided with limit switches, and the middle of the fixed plate is provided with an elastic trigger. The elastic trigger includes a support plate, a spring and a trigger ball. The trigger ball is fixedly connected to one end of the spring, and the other end of the spring is fixedly connected to the support plate. The support plate is threaded into the fixed through hole on the fixed plate. The frame is provided with guide posts, which pass through guide holes in the fixing plate.

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