A four-axis drilling and milling machining center

Abstract

The Z-axis machine head is located above the fixture and is slidably connected to the bed along the length direction of the bed. The Z-axis machine head is located above the fixture and is slidably connected to the bed along the width direction of the bed. A drilling and milling power head that slides in a vertical direction is arranged on the Z-axis machine head. The drilling and milling power head and the Z-axis machine head can rotate relative to each other. A lever that is distributed in a vertical direction and moves up and down with the drilling and milling power head is arranged below the Z-axis machine head. A guide column that is slidably connected to the fixture in a vertical direction is arranged on the fixture. A mechanical valve connected to a pressure supply pipeline of the guide rail brake is arranged below the guide column. When the lever is located directly above the guide column, the drilling and milling power head moves downward to drive the lever to press down the guide column, thereby toggling a switch button of the mechanical valve.

Description

Technical Field

[0001] The invention relates to the technical field of machine tool processing, in particular to a four-axis drilling and milling processing center. Background Art

[0002] At present, most drilling and milling machining center equipment adopts a single single-station three-axis linkage CNC machining, which wastes a lot of time and labor, and the production efficiency decreases accordingly. There are great limitations in the use of mechanical processing, and the adjustment of the workpiece fixture is often done manually, which is inconvenient to operate and has low work efficiency. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a four-axis drilling and milling machining center, and the technical solution adopted is as follows:

[0004] A four-axis drilling and milling machining center, characterized in that it includes a bed, a fixture, a cantilever beam, a Z-axis machine head and a tool magazine system, wherein the fixture is slidably connected to the bed along the length direction of the bed and is provided with multiple ones, a guide rail brake is arranged between the fixture and the bed, the cantilever beam is slidably connected to the bed along the length direction of the bed, the Z-axis machine head is located above the fixture and is slidably connected to the cantilever beam along the width direction of the bed, a drilling and milling power head sliding in a vertical direction is arranged on the Z-axis machine head, the drilling and milling power head and the Z-axis machine head can rotate relative to each other, a lever distributed in a vertical direction and moving up and down with the drilling and milling power head is arranged below the Z-axis machine head, a guide column is arranged on the fixture, the guide column is slidably connected to the fixture in a vertical direction, a mechanical valve connected to the guide rail brake pressure supply pipeline is arranged below the guide column, and when the lever is located directly above the guide column, the drilling and milling power head moves downward to drive the lever to press the guide column downward, thereby toggling the mechanical valve switch button.

[0005] Preferably, the clamp consists of a clamp bracket and a clamp seat connected to the top of the bracket along the bed, the clamp bracket is slidably connected to the bed along the length direction of the bed, the clamp seat is slidably connected to the top of the clamp bracket along the length direction of the bed, and a positioning cylinder is also provided on the clamp bracket, the cylinder body of the positioning cylinder is fixedly connected to the clamp bracket, and the piston rod is distributed along the width direction of the bed and fixedly connected to the clamp seat.

[0006] Preferably, a return spring is provided between the guide column and the mechanical valve switch.

[0007] Preferably, the drilling and milling power head is connected to the Z-axis head by a connecting plate for sliding up and down, and a lever cylinder for driving the lever to move vertically up and down is provided on the connecting plate. The lever cylinder body is fixedly connected to the connecting plate, and the lever cylinder piston rod is distributed vertically downward, and the lower end is fixedly connected to the lever.

[0008] Preferably, the lower end of the lever is provided with a groove which cooperates with the upper end of the guide column.

[0009] Preferably, the guide rail brake is a normally closed guide rail brake.

[0010] The beneficial effects of the present invention are:

[0011] 1. The lever presses down the guide column to open the mechanical valve, and the guide rail brake loosens the fixture from the bed. The Z-axis head drives the fixture to adjust its position along the X-axis direction of the bed, which is convenient for timely adjustment of the fixture position according to the size of the workpiece to be processed. After the position adjustment is completed, the lever moves up, and the guide rail brake locks with the guide rail to prevent the fixture from moving;

[0012] 2. The lever is driven up and down by the lever cylinder. When the drilling and milling power head is in the processing position, the lever cylinder will retract the lever upward to avoid affecting the processing of the workpiece;

[0013] 3. The fixture seat can slide along the front and rear direction of the fixture bracket through the adjusting cylinder, so as to adjust the position of the fixture seat in the front and rear direction of the bed. When the adjusting cylinder is extended, the fixture seat is in the workpiece processing position. When the adjusting cylinder is retracted, the fixture seat is in the loading position, thereby shortening the loading distance and facilitating operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The structural diagram of the present invention

[0015] Figure 2 Schematic diagram of the fixture structure

[0016] Figure 3 Schematic diagram of the position relationship between the Z-axis head and the fixture

[0017] Figure 4 for Figure 3 Left view of

[0018] Among them, 1-bed, 2-clamp, 3-cantilever beam, 4-Z-axis machine head, 5-drilling and milling power head, 6-shift rod, 7-clamp bracket, 8-clamp seat, 9-positioning cylinder, 10-shift rod, 11-guide column, 12-mechanical valve, 13-guide rail brake, 14-reset spring, 15-tool magazine, 16-upper pressure seat, 17-shift rod cylinder, 18-linear guide. DETAILED DESCRIPTION

[0019] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0020] In the description of the invention, it is necessary to understand that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention, 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 cannot be understood as a limitation on the invention.

[0021] like Figure 1The four-axis drilling and milling machining center shown mainly includes a bed 1, a fixture 2, a cantilever beam 3, a Z-axis head 4 and a tool magazine system 15. The fixture 2 is provided with five groups, and the fixture 2 is composed of a fixture bracket 7, a fixture seat 8 and a positioning cylinder 9. The fixture bracket 7 is slidably connected to the bed 1 along the left and right directions through a slider guide rail. The upper end of the fixture bracket 7 is provided with a guide rail distributed in the front and rear directions. The fixture seat 8 is connected to the top of the fixture bracket 7 by sliding forward and backward through the slider guide rail. The cylinder body of the positioning cylinder 9 is fixedly connected to the fixture bracket 7, and the end of the piston rod is fixedly connected to the fixture seat 8, thereby driving the fixture seat 8 to slide forward and backward and connect to the top of the fixture bracket 7. A constant A closed guide rail brake 13 is also provided at the rear end of the fixture bracket 7 with a mechanical valve 12 connected to the guide rail brake air supply pipeline, a guide column 11 is provided above the mechanical valve 12, an upper pressure seat 16 is fixedly connected to the rear end of the fixture bracket 7, and the guide column 11 is connected to the fixture bracket 7 by sliding up and down in the vertical direction through the upper pressure seat 16; the cantilever beam 3 is connected to the top of the bed 1 by sliding left and right along the guide rail slider, the Z-axis head 4 is connected to the cantilever beam 3 by sliding forward and backward, and the Z-axis head 3 is located above the fixture 2, and a drilling and milling power 5 is provided on the Z-axis machine 3, and the drilling and milling power head 5 is connected to the left side of the Z-axis head 4 by sliding up and down through a connecting plate, and the drilling and milling power head 5 is rotatably connected to the connecting plate, and a connecting plate is provided below the connecting plate. A lever 10 is arranged in a vertical direction, and the axis of the lever 10 and the guide column 11 are arranged parallel. In addition, a lever cylinder 17 and a linear guide 18 are arranged on the connecting plate of the Z-axis machine head 4. The cylinder body of the lever cylinder 17 is fixedly connected to the connecting plate, and the lower end of the piston rod is fixedly connected to the upper end of the lever 10. Moreover, the lever 10 and the linear guide 18 are connected by sliding up and down in the vertical direction. The lower end of the lever 10 is also provided with a groove for matching with the upper end of the guide column 11. When the Z-axis machine head 4 drives the lever 10 to be located directly above the guide column 11, the lever cylinder 17 drives the lever 10 to move downward, and the connecting plate drives the lever 10 to move downward to press the guide column 11, thereby toggling the mechanical valve 12 to open. Close, so that the mechanical valve 12 is in the open state. At this time, the air supply pipeline of the normally closed guide rail brake 13 is closed, and the fixture 2 can slide freely along the length direction of the bed 1. The Z-axis head 4 slides left and right along the length direction of the bed 1 through the cantilever beam 3. At the same time, the fixture bracket 7 is driven by the lever 10 to drive the fixture 2 to move synchronously, and the fixture 2 is driven to the processing position. In addition, a reset spring is also arranged between the switch of the mechanical valve 12 and the guide column 11. When the lever 10 moves upward and away from the guide column 11, the mechanical valve 12 is reset under the action of the reset spring, and the switch button of the mechanical valve 12 pops up, the guide rail brake cuts off the air and locks the guide rail, and the positions of the fixture 2 and the fixture seat 8 in the X-axis direction are fixed.

[0022] The working principle of this device is as follows: according to the size of the profile to be processed, the Z-axis head 4 moves the lever 10 to the top of the clamp 2, the lever cylinder 18 drives the lever 10 to move downward, and then the lever 10 follows the connecting plate on the Z-axis head 4 to move downward to move the guide column 11 downward, thereby opening the switch button of the mechanical valve 12, and the guide rail brake 13 is ventilated and released. The clamp 2 can slide freely in the X-axis direction of the bed driven by the lever 10 to adjust the position. When the clamp 2 is adjusted to the appropriate position, the positioning cylinder 9 is in a retracted state, the clamp seat 8 is in the loading position, and then the profile is prevented from being placed on the clamp seat 8. After the clamp seat 8 clamps the profile through the clamping cylinder, the positioning cylinder 9 extends and the clamp is clamped. The tool seat 8 moves backward, thereby pushing the profile on the fixture seat 8 to the processing position, and the lever cylinder 18 drives the lever 10 to move upward to avoid affecting the subsequent workpiece processing. The Z-axis head 4 drives the drilling and milling power head 5 to process holes and grooves on the profile. After the processing is completed, the adjustment cylinder 9 retracts, the fixture seat 8 releases the cylinder, and the profile is removed. The setting of the adjustment cylinder 9 makes it easy to adjust the position between the fixture seat 9 and the drilling and milling power head 5 in the Y-axis direction, thereby shortening the loading distance. The Z-axis head 4 slides left and right along the bed through the cantilever beam 3 to adjust the position of the drilling and milling power head 5 in the X-axis direction, and adjusts the position of the drilling and milling power head 5 in the Z-axis direction by sliding the slide plate on the Z-axis head 4 up and down.

[0023] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principle of the present invention. These improvements should also be regarded as the protection scope of the present invention.

Claims

1. A four-axis drilling and milling machining center, characterized in that: The tool holder comprises a bed, a fixture, a cantilever beam, a Z-axis machine head and a tool magazine system, wherein the fixture is slidably connected to the bed along the length direction of the bed and is provided with multiple ones, a guide rail brake is provided between the fixture and the bed, the cantilever beam is slidably connected to the bed along the length direction of the bed, the Z-axis machine head is located above the fixture and is slidably connected to the cantilever beam along the width direction of the bed, a drilling and milling power head which slides along the vertical direction is provided on the Z-axis machine head, the drilling and milling power head and the Z-axis machine head can rotate relative to each other, a lever which is distributed in the vertical direction and moves up and down with the drilling and milling power head is provided below the Z-axis machine head, a guide column is provided on the fixture, the guide column is slidably connected to the fixture in the vertical direction, a mechanical valve connected to the guide rail brake pressure supply pipeline is provided below the guide column, and when the lever is located directly above the guide column The drilling and milling power head moves downward to drive the lever to press the guide column, thereby toggling the mechanical valve switch button. The fixture consists of a fixture bracket and a fixture seat connected to the top of the bracket along the bed. The fixture bracket is slidably connected to the bed along the length direction of the bed, and the fixture seat is slidably connected to the top of the fixture bracket along the length direction of the bed. In addition, a positioning cylinder is provided on the fixture bracket, and the positioning cylinder body is fixedly connected to the fixture bracket, and the piston rod is distributed along the width direction of the bed and fixedly connected to the fixture seat. The drilling and milling power head is connected to the Z-axis head for up and down sliding through a connecting plate, and a lever cylinder for driving the lever to move up and down in the vertical direction is provided on the connecting plate. The lever cylinder body is fixedly connected to the connecting plate, and the lever cylinder piston rod is distributed vertically downward, and the lower end is fixedly connected to the lever.

2. The four-axis drilling and milling machining center according to claim 1, characterized in that: A return spring is arranged between the guide column and the mechanical valve switch.

3. The four-axis drilling and milling machining center according to claim 1, characterized in that: The lower end of the lever is provided with a groove which matches with the upper end of the guide column.

4. The four-axis drilling and milling machining center according to claim 1, characterized in that: The guide rail brake is a normally closed guide rail brake.

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