A kind of fixed jig slot milling equipment and process

Abstract

The present application discloses a kind of fixed jig slot milling equipment and process, which relates to the field of milling technology, including: supporting bottom rails, which are arranged in parallel as a group, and a fixed plate group is slidably arranged on the supporting bottom rails; a processing frame, which is arranged in contact with a single supporting bottom rail, and an adjustment guide rail is arranged on the processing frame parallel to the supporting bottom rails; a processing assembly, including a processing movable table slidably arranged on the adjustment guide rail, a guide rod is arranged on the processing movable table perpendicular to the adjustment guide rail, an adjustment table is slidably arranged on the guide rod, a vertical guide rod and a vertical guide rail are fixedly arranged on the adjustment table, an adjustment motor is fixedly arranged on the top of the vertical guide rail through a pad, a milling table is slidably arranged on the vertical guide rod and the vertical guide rail through the adjustment assembly, and the adjustment assembly is connected to the output end of the adjustment motor through a screw, so as to provide a technical solution for improving processing accuracy.

Description

Technical Field

[0001] The present application relates to the field of milling technology, and particularly relates to a jig groove milling device and process for fixing. Background Art

[0002] A milling device is a machine tool used for metal processing. It cuts workpieces through a rotating tool and is widely used in many fields such as aerospace, automotive manufacturing, mold manufacturing, electronic communication, etc. A jig is a tool used to clamp or fix metal materials during metal processing and is mainly applied in metal hot working processes such as forging and casting. The function of the jig is to clamp and fix the metal material at a specific position for subsequent processing and heat treatment.

[0003] Jigs are usually processed by a milling machine to produce holes and slots for easy clamping. During the processing by milling, the contact between the milling cutter and the jig will cause vibration, resulting in relative offset between the milling cutter and the jig, affecting the machining accuracy.

[0004] Therefore, it is necessary to provide a jig groove milling device and process for fixing to solve the problems raised in the above background art. Summary of the Invention

[0005] To achieve the above object, the present application provides the following technical solutions: A jig groove milling device for fixing, comprising:

[0006] A supporting bottom rail, arranged in a group in parallel, and a fixed plate group is slidably arranged on the supporting bottom rail;

[0007] A processing frame, arranged in contact with a single supporting bottom rail, and an adjustment guide rail is arranged on the processing frame in parallel with the supporting bottom rail;

[0008] A processing component, including a processing moving table slidably arranged on the adjustment guide rail. A guide rod is arranged vertically on the processing moving table. An adjustment table is slidably arranged on the guide rod. A vertical guide rod and a vertical guide rail are fixedly arranged on the adjustment table. An adjustment motor is fixedly arranged at the top of the vertical guide rail through a backing plate. The vertical guide rod and the vertical guide rail are slidably provided with a milling table through an adjustment component, and the adjustment component is connected to the output end of the adjustment motor through a screw rod.

[0009] Further, preferably, a driving motor and a detection seat are fixedly arranged on the supporting bottom rail. A driving rod spirally passes through the detection seat, and the end of the driving rod is connected to the driving motor. The fixed plate group is connected to the driving rod.

[0010] Further, as a preference, the fixed plate group includes a guiding wedge, a pressure sensor and a clamping plate. A plurality of pressure sensors are arranged on the lower end surface of the clamping plate, and the pressure sensors are slidably arranged on the supporting bottom rail through the guiding wedge.

[0011] Further, as a preference, the processing moving table is driven by a driving element arranged in the adjusting rail to slide on the adjusting rail, and the adjusting table is driven by a driving element arranged in the processing moving table to slide on the processing moving table.

[0012] Further, as a preference, a fixture for clamping a milling cutter is arranged at the lower end of the milling table, and a power motor for driving the milling cutter is arranged at the upper end of the milling table. The milling table is driven by an adjusting assembly to adjust its vertical position, and the milling table is driven by the processing moving table and the adjusting table to adjust its horizontal position.

[0013] Further, as a preference, the adjusting assembly includes a lower guide block and an upper guide block. The upper guide block is connected to the milling table, and the lower guide block is connected to the adjusting motor.

[0014] Further, as a preference, the adjusting assembly further includes an adapter block arranged in the lower guide block and a damping block arranged in the upper guide block. Both the adapter block and the damping block are sleeved on the vertical guide rail.

[0015] Further, as a preference, an adjusting spring is arranged between the damping block and the adapter block, and the adjusting spring maintains a tensile force.

[0016] A jig slot milling process for fixing includes the following steps:

[0017] Ⅰ. First, fix the jig on the clamping plate, keep the surface of the slot to be machined of the jig facing upward, and then adjust the positions of the fixed plate group, the processing moving table and the adjusting table to move the milling cutter to the starting end of the processing track.

[0018] Ⅱ. Start the rotation of the milling cutter, and control the milling table to move downward through the adjusting motor so that the milling cutter descends to contact the jig and reach a predetermined depth.

[0019] Ⅲ. Control the milling cutter to machine the jig along the processing track by moving the fixed plate group, the processing moving table and the adjusting table.

[0020] Ⅳ. Monitor the recorded values of the pressure sensors and the detection seats, and at the same time compare the values of the pressure sensors or detection seats corresponding to the non-processing track orientation to judge the machining vibration magnitude, thereby judging the machining accuracy of the machining device, and adjusting the feed speed based on this to reduce vibration and ensure machining accuracy.

[0021] Ⅴ. During the processing, the vibration and offset of the milling cutter are restricted by the vertical guide rail and the vertical guide rod, and the vibration is transferred to the entire processing assembly to reduce the vibration amplitude.

[0022] Ⅵ. The horizontal vibration is partially transmitted to the milling table. The vibration kinetic energy is consumed by driving the milling table and the upper guide block to vibrate up and down through the vibration damping block and the adjusting spring. On the jig, it is manifested as the undulation of the bottom surface of the processing groove, which is compensated by subsequent repeated processing.

[0023] Compared with the prior art, the present application provides a jig groove milling device and process for fixing, which have the following beneficial effects:

[0024] In the present application, by monitoring the recorded values of the pressure sensor and the detection seat, and at the same time comparing the values of the pressure sensor or the detection seat corresponding to the non-processing trajectory direction to judge the machining vibration magnitude, thereby judging the machining accuracy of the machining device, and adjusting the feed speed based on this, the vibration can be effectively reduced to ensure the machining accuracy; at the same time, the vibration and offset of the milling cutter are restricted by the vertical guide rail and the vertical guide rod, and the vibration is transferred to the entire processing assembly to reduce the vibration amplitude; in addition, the horizontal vibration is partially transmitted to the milling table, and the vibration kinetic energy is consumed by driving the milling table and the upper guide block to vibrate up and down through the vibration damping block and the adjusting spring. On the jig, it is manifested as the undulation of the bottom surface of the processing groove, which is compensated by subsequent repeated processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objectives and advantages of the present application will become more obvious:

[0026] Figure 1 It is a schematic diagram of the overall structure of a jig groove milling device for fixing;

[0027] Figure 2 It is a schematic diagram of the fixed plate group structure of a jig groove milling device for fixing;

[0028] Figure 3 It is a schematic diagram of the processing assembly structure of a jig groove milling device for fixing;

[0029] Figure 4 It is a schematic diagram of the adjusting assembly structure of a jig groove milling device for fixing;

[0030] Figure 5 It is a schematic diagram of the internal structure of the adjusting assembly of a jig groove milling device for fixing;

[0031] In the figure: 1. Supporting bottom rail; 2. Driving motor; 3. Fixed plate group; 31. Guide wedge; 32. Pressure sensor; 33. Clamping plate; 4. Detection seat; 5. Driving rod; 6. Processing frame; 7. Adjusting guide rail; 8. Processing component; 81. Processing moving table; 82. Guide rod; 83. Adjusting table; 84. Vertical guide rod; 85. Vertical guide rail; 86. Adjusting component; 861. Lower guide block; 862. Upper guide block; 863. Adapter block; 864. Vibration damping block; 865. Adjusting spring; 87. Adjusting motor; 88. Milling table. Detailed implementation mode

[0032] Please refer to Figures 1 to 5 , in the embodiment of the present application, a jig groove milling device for fixing includes:

[0033] The supporting bottom rail 1 is arranged in a parallel group, and a fixed plate group 3 is slidably arranged on the supporting bottom rail 1;

[0034] The processing frame 6 is arranged in contact with a single supporting bottom rail 1, and an adjusting guide rail 7 is arranged on the processing frame 6 in parallel with the supporting bottom rail 1;

[0035] The processing component 8 includes a processing moving table 81 slidably arranged on the adjusting guide rail 7. A guide rod 82 is arranged on the processing moving table 81 perpendicular to the adjusting guide rail 7. An adjusting table 83 is slidably arranged on the guide rod 82. A vertical guide rod 84 and a vertical guide rail 85 are fixedly arranged on the adjusting table 83. An adjusting motor 87 is fixedly arranged at the top of the vertical guide rail 85 through a cushion plate. The vertical guide rod 84 and the vertical guide rail 85 are slidably provided with a milling table 88 through an adjusting component 86, and the adjusting component 86 is connected to the output end of the adjusting motor 87 through a screw.

[0036] It should be explained that the jig is clamped on the fixed plate group 3, and the horizontal position is adjusted by sliding the fixed plate group 3 on the supporting bottom rail 1. The horizontal position is adjusted by sliding the processing moving table 81 on the adjusting guide rail 7 and sliding the adjusting table 83 on the processing moving table 81, so as to control the position of the milling table 88 on the plane. At the same time, the vertical position is adjusted by sliding the adjusting component 86 on the vertical guide rod 84 and the vertical guide rail 85, so as to control the milling table 88 to move along a specific track to approach, process and move away from the jig. During this period, the adjusting component 86 is used to assist in reducing the offset of the milling table 88 caused by adjustment vibration.

[0037] As a preferred embodiment, a driving motor 2 and a detection seat 4 are fixedly arranged on the supporting bottom rail 1. The driving rod 5 is spirally passed through the detection seat 4, and the end of the driving rod 5 is connected to the driving motor 2. The fixed plate group 3 is connected to the driving rod 5.

[0038] As a preferred embodiment, the fixing plate group 3 includes a guiding wedge 31, a pressure sensor 32, and a clamping plate 33. A plurality of pressure sensors 32 are arranged on the lower end surface of the clamping plate 33, and the pressure sensors 32 are slidably arranged on the supporting bottom rail 1 through the guiding wedge 31.

[0039] It should be noted that the pressure sensor 32 and the detection seat 4 are used to monitor the relative acting force between the clamping plate 33 and the supporting bottom rail 1. During the clamping process of the jig on the clamping plate 33, different milling directions result in different numerical ranges reflected on the pressure sensor 32 and the detection seat 4. At the same time, the numerical range is used to assist in monitoring the machining deviation state.

[0040] As a preferred embodiment, the processing moving table 81 is driven by a driving element arranged in the adjusting rail 7 to slide on the adjusting rail 7, and the adjusting table 83 is driven by a driving element arranged in the processing moving table 81 to slide on the processing moving table 81. The specific driving element can be a motor, a screw, a hydraulic rod, etc.

[0041] As a preferred embodiment, a fixture for clamping a milling cutter is arranged at the lower end of the milling table 88, and a power motor for driving the milling cutter is arranged at the upper end of the milling table 88. The milling table 88 is driven by the adjusting assembly 86 to adjust its vertical position, and the milling table 88 is driven by the processing moving table 81 and the adjusting table 83 to adjust its horizontal position.

[0042] As a preferred embodiment, the adjusting assembly 86 includes a lower guide block 861 and an upper guide block 862. The upper guide block 862 is connected to the milling table 88, and the lower guide block 861 is connected to the adjusting motor 87.

[0043] As a preferred embodiment, the adjusting assembly 86 further includes an adapter block 863 arranged in the lower guide block 861 and a damping block 864 arranged in the upper guide block 862. Both the adapter block 863 and the damping block 864 are sleeved on the vertical guide rail 85.

[0044] It should be noted that the milling table 88 is movably arranged on the lower guide block 861 through the upper guide block 862, and is carried and limited by the lower guide block 861. At the same time, it is driven by the lower guide block 861 for adjustment.

[0045] As a preferred embodiment, an adjusting spring 865 is arranged between the damping block 864 and the adapter block 863, and the adjusting spring 865 maintains a tensile force.

[0046] A jig slot milling process for fixing includes the following steps:

[0047] Ⅰ. First, fix the jig on the clamping plate 33, keep the surface of the groove hole to be machined on the jig facing upward, and then adjust the positions of the fixed plate group 3, the machining moving table 81, and the adjusting table 83 to move the milling cutter to the starting end of the machining trajectory.

[0048] Ⅱ. Start the rotation of the milling cutter, and control the milling table 88 to move downward through the adjusting motor 87 so that the milling cutter descends to contact the jig and reach a predetermined depth. Specifically, the landing point of the milling cutter coincides with the projection of the machining trajectory on the jig. Calculate and determine the number of milling passes and the range of each milling depth according to the cutting force of the milling cutter and the physical properties of the jig, and select a value within the calculated range to determine the machining depth for each time.

[0049] Ⅲ. By moving the fixed plate group 3, the machining moving table 81, and the adjusting table 83, control the milling cutter to machine the jig along the machining trajectory. Specifically, mainly control the relative movement of the milling cutter and the jig along the predetermined machining trajectory to mill out the groove hole. The whole process repeats the movement along the trajectory multiple times until the groove hole machining is completed.

[0050] Ⅳ. Monitor the recorded values of the pressure sensor 32 and the detection seat 4, and at the same time compare the values of the pressure sensor 32 or the detection seat 4 corresponding to the non-machining trajectory orientation to judge the machining vibration magnitude, thereby judging the machining accuracy of the machining device, and adjust the feed speed based on this to reduce vibration and ensure machining accuracy. Specifically, during the machining process, the milling cutter and the jig move relative to each other along the machining trajectory, and the acting force on the jig is decomposed and monitored by the pressure sensor 32 and the detection seat 4 respectively.

[0051] Ⅴ. During the machining process, the vibration deviation of the milling cutter is restricted by the vertical guide rail 85 and the vertical guide rod 84, and the vibration is transferred to the entire machining assembly 8, thereby reducing the vibration amplitude.

[0052] Ⅵ. The horizontal vibration part is transmitted to the milling table 88, and drives the milling table 88 and the upper guide block 862 to vibrate up and down through the damping block 864 and the adjusting spring 865 to consume the vibration kinetic energy, which is manifested as the undulation of the bottom surface of the machining groove on the jig and is compensated by subsequent repeated machining.

[0053] The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application, according to the technical solution and the application concept of the present application, makes equivalent substitutions or changes, and should be covered by the protection scope of the present application.

Claims

1. A fixed jig slot milling device, characterized in that: include: The supporting bottom rails are arranged in parallel as a group, and a fixed plate group is slidably arranged on the supporting bottom rails; The processing frame is arranged in close contact with a single supporting bottom rail, and an adjustment guide rail is arranged on the processing frame parallel to the supporting bottom rail; The processing assembly comprises a processing movable table slidably arranged on the adjusting guide rail, a guide rod is arranged on the vertical adjusting guide rail of the processing movable table, an adjusting table is slidably arranged on the guide rod, a vertical guide rod and a vertical guide rail are fixedly arranged on the adjusting table, an adjusting motor is fixedly arranged on the top of the vertical guide rail through a pad, a milling table is slidably arranged on the vertical guide rod and the vertical guide rail through the adjusting assembly, and the adjusting assembly is connected to the output end of the adjusting motor through a screw rod; A driving motor and a detection seat are fixedly arranged on the supporting bottom rail, a driving rod spirally passes through the detection seat, and an end of the driving rod is connected to the driving motor, and a fixed plate group is connected to the driving rod; The fixed plate group includes a guide wedge, a pressure sensor and a clamping plate. A plurality of pressure sensors are arranged on the lower end surface of the clamping plate. The pressure sensors are slidably arranged on the supporting bottom rail through the guide wedge. The adjustment assembly includes a lower guide block and an upper guide block, the upper guide block is connected to the milling table, and the lower guide block is connected to the adjustment motor; The adjustment assembly also includes a transfer block arranged in the lower guide block and a vibration-damping block arranged in the upper guide block, and both the transfer block and the vibration-damping block are sleeved on the vertical guide rail; An adjustment spring is arranged between the vibration damping block and the adapter block, and the adjustment spring maintains the tension; The above-mentioned fixed tool slot milling equipment performs slot milling on the tool, including the following steps: Ⅰ. First, fix the jig on the clamping plate, keep the surface of the slot to be processed facing upward, then adjust the position of the fixed plate group, the processing moving table and the adjustment table, and move the milling cutter to the starting end of the processing track; Ⅱ. Start the milling cutter to rotate, and adjust the motor to control the milling table to move downward so that the milling cutter is lowered to contact the jig and reach the predetermined depth; III. By moving the fixed plate group, the processing moving table and the adjusting table, the milling cutter is controlled to process the jig along the processing trajectory; IV. Monitor the recorded values ​​of the pressure sensor and the detection seat, and compare the values ​​of the pressure sensor or the detection seat corresponding to the non-processing track to determine the size of the processing vibration and thus the processing accuracy of the processing device, and adjust the feed speed based on this to reduce vibration and ensure processing accuracy; V. During the machining process, the vibration excursion of the milling cutter is limited by the vertical guide rails and vertical guide rods, and the vibration is transferred to the entire machining assembly, thereby reducing the vibration amplitude; VI. The horizontal vibration is partially transmitted to the milling table, which drives the milling table and the upper guide block to vibrate up and down through the vibration damping block and the adjusting spring to consume the vibration kinetic energy, which is manifested as the ups and downs of the bottom surface of the processing groove on the jig, and is compensated by subsequent repeated processing.

2. A fixed jig slot milling device according to claim 1, characterized in that: The processing movable table is driven by a driving element arranged in the adjusting guide rail so as to slide on the adjusting guide rail, and the adjusting table is driven by a driving element arranged in the processing movable table so as to slide on the processing movable table.

3. The fixed jig slot milling device according to claim 1, characterized in that: A clamp for clamping the milling cutter is arranged at the lower end of the milling table, and a power motor for driving the milling cutter is arranged at the upper end of the milling table. The milling table is vertically adjusted under the drive of the adjustment component, and the milling table is horizontally adjusted under the drive of the processing moving table and the adjustment table.

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