A three-axis machining table for arc additive production

Abstract

The present invention discloses a three-axis processing table for arc additive production in the field of arc additive production technology, comprising a three-axis platform, the internal transmission of the three-axis platform is connected to a lifting platform, the inner wall of the lifting platform is slidably connected to a power frame, the inner wall of the lifting platform is fixedly installed with a first driving push rod connected to the power frame, the top surface of the power frame is fixedly installed with a servo motor, the inner wall of the power frame is rotatably connected with a vertically arranged transmission shaft, the output shaft end of the servo motor is transmission-connected to the transmission shaft, the peripheral side of the transmission shaft is fixedly installed with a driving wheel, the inner wall of the power frame is slidably connected with a clamping mechanism, and the inner wall of the power frame is fixedly installed with a second driving push rod that drives the clamping mechanism to move. The present invention enables the device to efficiently complete the three-axis production and processing operation of arc additive through the arrangement of a radial drive module, an axial drive module and a longitudinal drive module, and the device can simultaneously install multiple tools during the production and processing operation.

Description

Technical Field

[0001] The invention relates to the technical field of three-axis machining tables, in particular to a three-axis machining table for arc additive production. Background Art

[0002] Arc additive manufacturing technology is a process of 3D forming of metal parts using arc fuse technology, that is, using argon arc welding arc as a heat source to melt metal wire and deposit layer by layer to produce a three-dimensional metal blank close to the product design size requirements. Compared with other metal additive manufacturing technologies, arc additive manufacturing technology has the advantages of low equipment investment (only welding power supply, motion system and control system are required), high manufacturing efficiency (can reach an additive speed of several kilograms per hour), stable equipment operation, and low operating cost (due to the electric-arc conversion rate of more than 85%, for lasers, the electric-optical conversion rate is less than 10%, and the operating cost is relatively low). After the arc additive manufacturing is completed, it is often necessary to perform milling on the surface of the arc additive. Various types of arc additive milling processing devices have appeared in the prior art. For example, the patent document with announcement number CN209006718U discloses an arc additive milling processing device. When the device performs production processing on the arc additive, although it realizes multi-angle milling operation on the surface of the arc additive, it is not convenient to perform online replacement of the milling cutter head when the above device is in use. Based on this, the present invention designs a three-axis processing table for arc additive production to solve the above problem. Summary of the invention

[0003] The object of the present invention is to provide a three-axis machining table for arc additive production to solve the problem mentioned in the above background technology that the existing arc additive machining table is not convenient for online replacement of milling cutter heads.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a three-axis machining table for arc additive production, comprising a three-axis platform, the internal transmission of the three-axis platform is connected to a lifting platform, the inner wall of the lifting platform is slidably connected to a power frame, the inner wall of the lifting platform is fixedly installed with a first driving push rod connected to the power frame, the top surface of the power frame is fixedly installed with a servo motor, the inner wall of the power frame is rotatably connected to a vertically arranged transmission shaft, the output shaft end of the servo motor is transmission-connected to the transmission shaft, the circumferential side surface of the transmission shaft is fixedly installed with a driving wheel, the inner wall of the power frame is slidably connected to a clamping mechanism, the inner wall of the power frame is fixedly installed with a second driving push rod that drives the clamping mechanism to move, the top of the three-axis platform is rotatably connected to a rotary cutter drum, the surface of the three-axis platform is fixedly installed with a rotating motor connected to the rotary cutter drum, and the inner wall of the rotary cutter drum is fixedly installed with a group of knife collecting modules distributed in a circular array.

[0005] Preferably, the tool collecting module includes a tool holder, the back side of which is fixedly connected to the rotating knife cylinder, the inner wall of the tool holder is clamped with a tool seat, the inner wall of the tool seat is rotatably connected to a driving shaft, a driven wheel cooperating with the driving wheel is fixedly installed on the circumferential side surface of the driving shaft and at a position corresponding to the driving wheel, a chuck is fixedly installed on the bottom end of the driving shaft, and a processing tool is clamped on the inner wall of the chuck.

[0006] Preferably, a magnet cooperating with a knife seat is fixedly installed on the back of the tool holder, the knife seat is made of metal and has a square structure, knife shifting holes are fixedly opened on both sides of the tool holder, and a group of friction ridges are fixedly installed on both sides of the tool seat at the positions corresponding to the knife shifting holes.

[0007] Preferably, the clamping mechanism comprises a screw drive module and a clamping platform respectively, the surface of the clamping platform is slidably connected to the power frame, the back side of the clamping platform is fixedly connected to the second driving push rod, the circumferential side surface of the screw drive module is symmetrically provided with a forward threaded portion and a reverse threaded portion, the circumferential side surface of the screw drive module and the positions corresponding to the forward threaded portion and the reverse threaded portion are connected with a clamp, the surface of the clamp is slidably connected to the clamping platform, and the surface of the clamp is fixedly provided with a tool clamping portion adapted to the shape of the tool shifting hole.

[0008] Preferably, the screw drive module comprises a transmission motor, two symmetrically arranged guide rods and a transmission screw, the output shaft end of the transmission motor is fixedly connected to the transmission screw, and the forward threaded portion and the reverse threaded portion are symmetrically arranged on the peripheral side of the transmission screw.

[0009] Preferably, the three-axis platform includes a frame, the inner wall of the frame is fixedly mounted with a vertically arranged radial drive module, the peripheral side surface of the radial drive module is transmission connected to the lifting platform, the inner wall of the frame is also fixedly mounted with an axial drive module arranged axially, the peripheral side surface of the axial drive module is transmission connected to an axial slide, the peripheral side surface of the axial slide is slidably connected to the frame, the inner wall of the axial slide is slidably connected to a longitudinal slide, the top surface of the longitudinal slide is fixedly mounted with a clamping platform, and the inner wall of the axial slide is fixedly mounted with a longitudinal drive module transmission connected to the longitudinal slide.

[0010] Preferably, the radial drive module, the axial drive module and the longitudinal drive module all include a drive motor and a screw, and the output shaft end of the drive motor is transmission-connected to the screw.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The present invention arranges a radial drive module, an axial drive module and a longitudinal drive module, so that the device can efficiently complete the three-axis production and processing operation of arc additive. In addition, during the production and processing operation, the device can simultaneously install a variety of tools, and after the tools are installed, the working tools can be quickly switched. By achieving the above-mentioned technical effects, the versatility of the processing table and the production and processing efficiency of arc additive are effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0016] Figure 3 It is a schematic structural diagram of the first driving push rod, the transmission shaft and the servo motor of the present invention;

[0017] Figure 4 It is a structural schematic diagram of the knife collection module of the present invention;

[0018] Figure 5 It is a schematic structural diagram of the clamping platform and the clamp of the present invention.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1-stand, 2-radial drive module, 3-axial drive module, 4-longitudinal drive module, 5-lifting platform, 6-clamping platform, 7-power frame, 8-first drive push rod, 9-servo motor, 10-transmission shaft, 11-driving wheel, 12-second drive push rod, 13-rotating knife drum, 14-rotating motor, 15-knife collecting module, 16-tool holder, 17-tool seat, 18-driving shaft, 19-processing tool, 20-screw drive module, 21-clamping table, 22-clamp, 23-magnet, 24-tool moving hole, 25-driven wheel. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-5 , the present invention provides a technical solution: a three-axis processing table for arc additive production, comprising a three-axis platform, the internal transmission of the three-axis platform is connected with a lifting platform 5;

[0023] The three-axis platform includes a platform 1, and a vertically arranged radial drive module 2 is fixedly installed on the inner wall of the platform 1. The peripheral side of the radial drive module 2 is transmission-connected with the lifting platform 5. The radial drive module 2 is arranged to drive the lifting platform 5 to perform lifting operations;

[0024] The inner wall of the stand 1 is also fixedly mounted with an axial driving module 3 arranged along the axial direction, the peripheral side surface of the axial driving module 3 is transmission-connected with an axial slide, the peripheral side surface of the axial slide is slidingly connected to the stand 1, the inner wall of the axial slide is slidingly connected with a longitudinal slide, the top surface of the longitudinal slide is fixedly mounted with a clamping platform 6, and the inner wall of the axial slide is fixedly mounted with a longitudinal driving module 4 transmission-connected to the longitudinal slide.

[0025] The axial drive module 3 cooperates with the longitudinal drive module 4 to drive the processing table to move in two axes. When in use, the arc additive is fixed on the clamping platform 6 by a fixture;

[0026] The radial drive module 2, the axial drive module 3 and the longitudinal drive module 4 all include a drive motor and a screw, and the output shaft end of the drive motor is transmission-connected to the screw;

[0027] The inner wall of the lifting platform 5 is slidably connected with a power frame 7, a first driving push rod 8 connected with the power frame 7 is fixedly installed on the inner wall of the lifting platform 5, a servo motor 9 is fixedly installed on the top surface of the power frame 7, a vertically arranged transmission shaft 10 is rotatably connected with the inner wall of the power frame 7, an output shaft end of the servo motor 9 is transmission-connected with the transmission shaft 10, a driven bevel gear is fixedly installed at the end of the transmission shaft 10, and a transmission bevel gear meshing with the driven bevel gear is fixedly installed on the output shaft end of the servo motor 9;

[0028] A driving wheel 11 is fixedly mounted on the peripheral side of the transmission shaft 10, a clamping mechanism is slidably connected to the inner wall of the power frame 7, and a second driving push rod 12 for driving the clamping mechanism to move is fixedly mounted on the inner wall of the power frame 7;

[0029] The clamping mechanism includes a screw drive module 20 and a clamping platform 21, the surface of the clamping platform 21 is slidably connected to the power frame 7, the back of the clamping platform 21 is fixedly connected to the second driving push rod 12, the peripheral side surface of the screw drive module 20 is symmetrically provided with a forward threaded portion and a reverse threaded portion, the peripheral side surface of the screw drive module 20 and the positions corresponding to the forward threaded portion and the reverse threaded portion are connected with a clamp 22, the surface of the clamp 22 is slidably connected to the clamping platform 21, and the surface of the clamp 22 is fixedly provided with a tool clamping portion that matches the shape of the tool shifting hole 24;

[0030] By setting the forward threaded portion and the reverse threaded portion, the two clamps 22 can be synchronously moved closer to each other or moved away from each other, and the tool holder 17 can be clamped and transferred by the two clamps 22 moving closer to each other or away from each other.

[0031] The screw drive module 20 includes a transmission motor, two symmetrically arranged guide rods and a transmission screw, the output shaft end of the transmission motor is fixedly connected to the transmission screw, and the forward threaded portion and the reverse threaded portion are symmetrically arranged on the peripheral side of the transmission screw;

[0032] The top of the three-axis platform is rotatably connected to a rotary cutter drum 13, a rotary motor 14 connected to the rotary cutter drum 13 is fixedly mounted on the surface of the three-axis platform, and a group of knife collecting modules 15 distributed in a circular array are fixedly mounted on the inner wall of the rotary cutter drum 13.

[0033] The tool collecting module 15 includes a tool holder 16, the back of which is fixedly connected to the rotary knife drum 13, a tool seat 17 is clamped on the inner wall of the tool holder 16, a driving shaft 18 is rotatably connected to the inner wall of the tool seat 17, a driven wheel 25 cooperating with the driving wheel 11 is fixedly installed on the circumferential side of the driving shaft 18 and corresponding to the position of the driving wheel 11, a chuck is fixedly installed on the bottom end of the driving shaft 18, and a processing tool 19 is clamped on the inner wall of the chuck.

[0034] A magnet 23 cooperating with a knife seat 17 is fixedly installed on the back of the tool holder 16. The knife seat 17 is made of metal and has a square structure. Knife shifting holes 24 are fixedly opened on both sides of the tool holder 16. A group of friction ridges are fixedly installed on both sides of the knife seat 17 corresponding to the positions of the knife shifting holes 24.

[0035] Working principle: This processing table is mainly suitable for milling or cutting processing of arc additives. When in use, the arc additive is fixed on the clamping platform 6 by a clamp. During processing, the axial drive module 3 cooperates with the longitudinal drive module 4 and the radial drive module 2 to perform three-axis processing on the arc additive. During processing, a selected tool collection module 15 is clamped between two clamps 22, and after clamping, the second drive push rod 12 is controlled to make the driven wheel 25 and the driving wheel 11 fully close to each other. After fully close to each other, the driving wheel 11 then effectively drives the processing tool 19 at the tool collection module 15. When it is necessary to replace the tool collection module 15, firstly, the clamping mechanism and the first drive push rod 12 are used to control the driven wheel 25 and the driving wheel 11. The cooperation of the driving push rod 8 and the second driving push rod 12 moves the original tool holder 17 to the empty tool holder 16. After the tool holder 16 fixes the tool holder 17, the two clamps 22 lose their clamping effect, and the first driving push rod 8 and the second driving push rod 12 are fully reset. After the reset is completed, the rotating motor 14 drives the rotary knife drum 13 to rotate at a set angle, so that the selected tool holder 17 is aligned with the driving wheel 11. Subsequently, the first driving push rod 8 and the second driving push rod 12 cooperate with the clamping mechanism to move the tool holder 17 out of the tool holder 16. After moving out, the second driving push rod 12 drives the driven wheel 25 at the tool collecting module 15 to be in close contact with the driving wheel 11, thereby completing the tool changing operation.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A three-axis machining platform for arc additive production, comprising a three-axis platform, characterized in that: The internal transmission of the three-axis platform is connected to a lifting platform (5), the inner wall of the lifting platform (5) is slidably connected to a power frame (7), the inner wall of the lifting platform (5) is fixedly mounted with a first driving push rod (8) connected to the power frame (7), the top surface of the power frame (7) is fixedly mounted with a servo motor (9), the inner wall of the power frame (7) is rotatably connected to a vertically arranged transmission shaft (10), the output shaft end of the servo motor (9) is transmission-connected to the transmission shaft (10), the peripheral side surface of the transmission shaft (10) is fixedly mounted with a driving wheel (11), the inner wall of the power frame (7) is slidably connected to a clamping mechanism, the inner wall of the power frame (7) is fixedly mounted with a second driving push rod (12) for driving the clamping mechanism to move, the The top of the three-axis platform is rotatably connected to a rotary cutter drum (13); a rotating motor (14) connected to the rotary cutter drum (13) is fixedly mounted on the surface of the three-axis platform; a group of knife collecting modules (15) distributed in a circumferential array are fixedly mounted on the inner wall of the rotary cutter drum (13); the knife collecting modules (15) include a knife holder (16); the back of the knife holder (16) is fixedly connected to the rotary cutter drum (13); a knife seat (17) is clamped on the inner wall of the knife holder (16); a driving shaft (18) is rotatably connected to the inner wall of the knife seat (17); a driven wheel (25) cooperating with the driving wheel (11) is fixedly mounted on the circumferential side surface of the driving shaft (18) and corresponding to the position of the driving wheel (11); the bottom end of the driving shaft (18) is fixedly mounted on the inner wall of the knife holder (16); A chuck is fixedly installed, and a processing tool (19) is clamped on the inner wall of the chuck. A magnet (23) that cooperates with the tool holder (17) is fixedly installed on the back of the tool holder (16). The tool holder (17) is made of metal and has a square structure. Tool shift holes (24) are fixedly opened on both sides of the tool holder (16). A group of friction convex strips are fixedly installed on both sides of the tool holder (17) at positions corresponding to the tool shift holes (24). The clamping mechanism comprises a screw drive module (20) and a clamping platform (21). The surface of the clamping platform (21) is slidably connected to the power frame (7), the back of the clamping platform (21) is fixedly connected to the second drive push rod (12), and the peripheral side of the screw drive module (20) is fixedly connected to the second drive push rod (12). A forward threaded portion and a reverse threaded portion are symmetrically arranged, and a clamp (22) is connected to the peripheral side surface of the screw drive module (20) and the positions corresponding to the forward threaded portion and the reverse threaded portion. The surface of the clamp (22) is slidably connected to the clamping platform (21), and the surface of the clamp (22) is fixedly provided with a tool clamping portion that matches the shape of the tool shifting hole (24). The screw drive module (20) comprises a transmission motor, two symmetrically arranged guide rods and a transmission screw, and the output shaft end of the transmission motor is fixedly connected to the transmission screw. The forward threaded portion and the reverse threaded portion are symmetrically arranged on the peripheral side surface of the transmission screw. The three-axis platform comprises a stand (1), and a vertically arranged radial drive module (2) is fixedly installed on the inner wall of the stand (1).The circumferential side surface of the radial drive module (2) is transmission-connected to the lifting platform (5); the inner wall of the platform (1) is also fixedly mounted with an axial drive module (3) arranged in the axial direction; the circumferential side surface of the axial drive module (3) is transmission-connected to the axial slide; the circumferential side surface of the axial slide is slidably connected to the platform (1); the inner wall of the axial slide is slidably connected to the longitudinal slide; the top surface of the longitudinal slide is fixedly mounted with a clamping platform (6); the inner wall of the axial slide is fixedly mounted with a longitudinal drive module (4) transmission-connected to the longitudinal slide; the radial drive module (2), the axial drive module (3) and the longitudinal drive module (4) all comprise a drive motor and a screw; the output shaft end of the drive motor is transmission-connected to the screw.

Images