CN203752532U - Polar-coordinate numerically controlled fused deposition rapid prototyping (RP) machine - Google Patents

Abstract

The utility model discloses a polar coordinate numerical control fusion deposition rapid prototyping machine, which comprises a support frame, a lateral movement device, a rotary device, a lifting device, a lateral adjustment device and an extrusion nozzle. The structure design of the polar coordinate numerical control fused deposition rapid prototyping machine provided by the utility model is ingenious and reasonable, adopts the polar coordinate method for processing, and is equipped with a rotary device to realize the rotary motion, effectively maintaining the uniformity of the feed speed in the straight line and curved motion, It achieves the coherence of the extruded material in the deposition process, the forming speed is fast, and the effect is good; and the overall structure is compact, the operation is convenient, and the work stability is high, which is conducive to wide popularization and application.

Description

Polar coordinate CNC fused deposition rapid prototyping machine

technical field

The utility model relates to the technical field of deposition molding, in particular to a polar coordinate numerical control fusion deposition rapid prototyping machine.

Background technique

Rapid prototyping (RP) technology is an advanced manufacturing technology developed in the 1990s. It is a key common technology for the development of new products for manufacturing companies. Power has a positive impetus. Since the technology came out, it has been widely used in the manufacturing industry in developed countries, and a new technical field has emerged.

RP technology is integrated and developed on the basis of modern CAD/CAM technology, laser technology, computer numerical control technology, precision servo drive technology and new material technology. Different types of rapid prototyping systems have different forming principles and system characteristics due to the different forming materials used. However, the basic principles are the same, that is, "manufacturing layer by layer, superimposing layer by layer", which is similar to the integral process in mathematics. Visually speaking, the rapid prototyping system is like a "three-dimensional printer". It can directly accept product design (CAD) data without preparing any molds, cutting tools and fixtures, and quickly manufacture samples, molds or models of new products. Therefore, the promotion and application of RP technology can greatly shorten the development cycle of new products, reduce development costs and improve development quality. From the traditional "removal method" to today's "increase method", from molded manufacturing to moldless manufacturing, this is the revolutionary significance of RP technology to the manufacturing industry.

However, the existing rapid prototyping machines are complex in structure and cumbersome to operate, and they all use linear coordinate axis linkage feed, which can keep the speed of linear motion in the plane uniform, but for the interpolation problem in the linkage feed in curved motion, it makes the The extruder runs at uneven speeds, making it difficult to maintain a consistent extruded material.

Contents of the invention

In view of the above deficiencies, the purpose of this utility model is to provide a polar coordinate numerical control fusion deposition rapid prototyping machine with ingenious and reasonable structural design, convenient operation and uniform feeding speed.

In order to achieve the above object, the technical solution provided by the utility model is:

A polar coordinate numerical control fused deposition rapid prototyping machine, which includes a support frame, which also includes a transverse movement device, a rotary device, a lifting device, a transverse adjustment device, and an extrusion nozzle, and the transverse movement device is horizontally arranged on the support frame , the turning device is arranged on the transverse movement device, and is driven by the transverse movement device to move laterally; It is installed on the lifting device and is driven by the lifting device to move up and down relative to the horizontal adjustment device. The extrusion nozzle is arranged on the horizontal adjustment device and is driven by the horizontal adjustment device to move closer or closer to the rotation axis of the slewing device. Stay away from sports.

As an improvement of the present utility model, the transverse movement device includes a transverse guide rail, a transverse slider, a transverse drive motor, a transverse synchronous belt and a transverse synchronous wheel, and the transverse guide rail is arranged transversely on the top of the support frame, and the One end of the transverse synchronous belt corresponding to the transverse guide rail is set on the support frame, the other end of the transverse drive motor corresponding to the transverse guide rail is set on the support frame, and the driving shaft of the transverse drive motor is provided with a driving pulley. The driving pulley is connected with the transverse synchronous pulley through the transverse synchronous belt, and the transverse slider is movably arranged on the transverse guide rail and connected with the transverse synchronous belt.

As an improvement of the utility model, the slewing device includes a rotating motor, a fixed plate, a connecting shaft, a bearing seat, a flange, a toothed belt, a toothed driving pulley and a toothed driven pulley, and the bearing The seat is arranged on one side of the fixed plate, the upper end of the connecting shaft is arranged on the bearing seat through a bearing assembly, the lower end passes through the fixed plate, and the toothed driven pulley is provided. The rotary motor is arranged on the other side of the fixed plate, and the drive shaft of the rotary motor passes through the fixed plate, and the toothed driving pulley is provided, and the toothed driving pulley passes through the toothed belt Connected with the toothed driven pulley, the flange is fixedly arranged on the upper end of the bearing seat, and the transverse slider is fixedly arranged on the flange.

As an improvement of the utility model, the upper end of the connecting shaft is provided with a first step and a second step in sequence from top to bottom, wherein the first step is compatible with the bearing seat through a tapered roller bearing Matching, the second step is adapted to the bearing seat through a thrust ball bearing.

As an improvement of the utility model, the lifting device includes a lifting motor, a guide rail shaft, a lifting screw, a horizontal fixing frame, an upper rotating plate and a lower rotating plate, and the upper rotating plate is connected to the lower end of the connecting shaft , the lower rotating plate is arranged horizontally directly below the upper rotating plate through guide rail shafts at intervals, the lifting motor is arranged on the bottom surface of the lower rotating plate, and the drive shaft of the lifting motor passes through the lower rotating plate, and is connected with The lower ends of the lifting screw rods are connected, the upper end of the lifting screw rods extends vertically upwards, and is movably arranged on the upper rotating plate through a shaft hole, and the horizontal fixing frame is movably arranged on the guide rail shaft, and through the wire The rod seat is connected with the lifting screw rod.

As an improvement of the present utility model, the lateral adjustment device includes two groups of lateral movement groups symmetrically arranged on the lateral fixing frame, and the lateral movement group includes an adjustment motor, a lateral movement frame, a lateral screw rod and a The horizontal screw rod seat that the screw rod is suitable for, the horizontal movement frame is movably arranged on the horizontal fixed frame through the slide rail, the horizontal screw rod seat is arranged on the lateral movement frame, and the adjustment motor is fixedly arranged on the On the horizontal fixing frame, one end of the horizontal screw rod is connected to the drive shaft of the adjusting motor, and the other end is screwed into the horizontal screw rod seat.

As an improvement of the utility model, one end of the extrusion nozzle is arranged at the lower end of the transverse movement frame through a fixing seat, and the other end extends horizontally for a certain distance, and then extends obliquely downward.

The beneficial effects of the utility model are: the structure design of the polar coordinate numerical control fused deposition rapid prototyping machine provided by the utility model is ingenious and reasonable, and the polar coordinate method is used for processing, and a rotary device is used to realize the rotary motion, effectively maintaining the straight line and curve. The uniform feeding speed during the movement achieves the consistency of the extruded material in the deposition process, the forming speed is fast and the effect is good; the overall structure is compact, which is conducive to wide application.

Below in conjunction with accompanying drawing and embodiment, the utility model is further described.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model.

Fig. 2 is a schematic structural diagram of the lateral movement device in Fig. 1 .

Fig. 3 is a structural schematic diagram of the slewing device, the lifting device and the lateral adjustment device in Fig. 1 .

Fig. 4 is a schematic structural diagram of the rotary device in Fig. 1 .

Fig. 5 is a schematic structural diagram of the lifting device in Fig. 1 .

Fig. 6 is a schematic structural diagram of the transverse adjustment device in Fig. 1 .

Detailed ways

Referring to Fig. 1 to Fig. 6, a polar coordinate numerical control fused deposition rapid prototyping machine provided in this embodiment includes a support frame 1, a lateral movement device 2, a rotary device 3, a lifting device 4, a lateral adjustment device 5 and an extrusion nozzle 6. The lateral movement device 2 is arranged laterally on the support frame 1, the turning device 3 is arranged on the lateral movement device 2, and is driven by the lateral movement device 2 to move laterally, and the lifting device 4 is set On the slewing device 3, it is driven by the slewing device 3 to rotate, and the horizontal adjusting device 5 is arranged on the lifting device 4, and is driven by the lifting device 4 to move up and down relative to the horizontal adjusting device 5. The extruding nozzle 6 is arranged on the transverse adjusting device 5 , and is driven by the transverse adjusting device 5 to move closer to or away from the rotation axis of the rotary device 3 .

Referring to Fig. 1 and Fig. 2, described transverse motion device 2 comprises transverse guide rail 21, transverse slide block 22, transverse drive motor 23, transverse synchronous belt 24 and transverse synchronous pulley 25, and described transverse guide rail 21 is laterally arranged on the support frame 1, the horizontal synchronous belt 24 is set on the support frame 1 corresponding to one end of the horizontal guide rail 21, and the horizontal drive motor 23 is set on the support frame 1 corresponding to the other end of the horizontal guide rail 21. The drive shaft of the motor 23 is provided with a driving pulley 26, which is connected with the horizontal synchronous pulley 25 through the horizontal synchronous belt 24, and the horizontal slide block 22 is movably arranged on the horizontal guide rail 21, and is connected with the horizontal guide rail 21. The transverse timing belt 24 is connected. During work, the horizontal driving motor 23 can quickly drive the rotary device 3, the lifting device 4, the lateral adjustment device 5 and the extrusion nozzle 6 to move in the horizontal direction through the horizontal synchronous belt 24, so that the extrusion nozzle 6 can quickly reach the predetermined position of work.

Referring to Fig. 1, Fig. 3 and Fig. 4, the rotary device 3 includes a rotating motor 31, a fixed plate 32, a connecting shaft 33, a bearing seat 34, a flange 35, a toothed belt 36, a toothed driving pulley 37 and a toothed belt. shaped driven pulley 38, the bearing seat 34 is arranged on one side of the fixed plate 32, the upper end of the connecting shaft 33 is arranged on the bearing seat 34 through a bearing assembly, and the lower end passes through the fixed plate 32, And be provided with described toothed driven pulley 38, described rotary motor 31 is arranged on the other side of described fixed plate 32, and the drive shaft of this rotary motor 31 passes through described fixed plate 32, and is provided with all The toothed driving pulley 37, the toothed driving pulley 37 is connected with the toothed driven pulley 38 through the toothed belt 36, the flange 35 is fixedly arranged on the upper end of the bearing seat 34, the The transverse sliding block 22 is fixedly arranged on the flange plate 35 and can be connected by bolts. The slewing device 3 utilizes the teeth of the toothed belt 36 to mesh with the toothed driving pulley 37 and the toothed driven pulley 38 to transmit motion and power. It has the advantages of belt drive, gear drive and chain drive, and can be conveniently Realize the transfer of far center distance. There is no relative sliding in the transmission process, the average transmission is relatively accurate, the transmission precision is high, and the toothed belt 36 has high strength, small thickness, and light weight, so it can be used for low-speed and high-speed transmission. The toothed belt 36 does not need to be specially tensioned. The load on the shaft, etc. is small, and the transmission efficiency is high. At the same time, the transmission mechanism using the toothed belt 36 can stagger the drive shaft of the rotary motor 31 and the connecting shaft 33, so that the transmission structure is easier to design and has better stability.

Preferably, the upper end of the connecting shaft 33 is provided with a first step and a second step in order from top to bottom, wherein the first step is adapted to the bearing seat 34 through a tapered roller bearing 39, and the second step The two steps are adapted to the bearing seat 34 through the thrust ball bearing 40 . The connecting rotating shaft 33 is in the shape of a stepped shaft, and is assembled with the bearing seat 34 through a thrust ball bearing 40 and a tapered roller bearing 39, so that it can not only ensure that it can withstand a relatively large pressure, but also ensure the stability of the parts during operation. Coaxiality makes the equipment run more smoothly.

Referring to Fig. 1 , Fig. 3 and Fig. 5, the lifting device 4 includes a lifting motor 41, a rail shaft 42, a lifting screw 43, a transverse fixing frame 44, an upper rotating plate 45 and a lower rotating plate 46, and the upper rotating plate 45 Connected to the lower end of the connecting shaft 33, the lower rotating plate 46 is horizontally arranged at intervals directly below the upper rotating plate 45 through the guide rail shaft 42, and the lifting motor 41 is arranged on the bottom surface of the lower rotating plate 46, And the drive shaft of the lifting motor 41 runs through the lower rotating plate 46 and is connected to the lower end of the lifting screw 43. The upper end of the lifting screw 43 extends vertically upwards and is movably arranged on the upper side through a shaft hole. On the rotating plate 45, the horizontal fixing frame 44 is movably arranged on the guide rail shaft 42, and is connected with the lifting screw 43 through a screw seat. The lifting device 4 adopts a screw structure, and the lifting motor 41 fixed below drives the lifting screw 43 to rotate, and under the cooperation of the screw seat and the lifting screw 43, the horizontal fixing frame 44 is driven to lift and lower, thereby realizing fixing on the The purpose of lifting and lowering components on the lateral adjustment device 5 .

Referring to Fig. 1, Fig. 3 and Fig. 6, the lateral adjustment device 5 includes two groups of lateral movement groups symmetrically arranged on the lateral fixing frame 44, and the lateral movement group includes an adjustment motor 51, a lateral movement frame 52, a lateral wire Rod 53 and the transverse screw seat 54 that is compatible with the transverse screw mandrel 53, the transverse movement frame 52 is movably arranged on the transverse fixed frame 44 through the slide rail 55, and the transverse screw seat 54 is arranged on the transverse movement On the frame 52, the adjusting motor 51 is fixedly arranged on the horizontal fixing frame. One end of the horizontal screw rod 53 is connected with the drive shaft of the adjusting motor 51, and the other end is screwed into the horizontal screw rod seat 54. The horizontal adjustment device 5 is a symmetrical structure, and the lower end of each lateral movement frame 52 is provided with an extruding nozzle 6 , that is, the equipment has a pair of extruding nozzles 6 . In this way, the transverse movement frame 52 and the extruding nozzle 6 are symmetrical with respect to the central axis, and the center of gravity is just in time on the central axis of the equipment when performing rotary motion, so that the operation is more stable, the friction is small, and the noise is small. During work, the adjusting motor 51 can drive the lateral moving frame 52 and the extruding nozzle 6 to move outward or outward through the horizontal screw rod 53 . Realize that the two extruding nozzles 6 move closer or farther away relative to the rotation axis of the rotary device 3 . This structure can adapt to the requirements of the radius of gyration of different formed workpieces, making the equipment more versatile.

One end of the extruding nozzle 6 is arranged on the lower end of the transverse movement frame 52 through the fixing seat 61 , and the other end extends horizontally for a certain distance, and then extends obliquely downward. In addition, an angle adjustment mechanism can also be provided at the output end of the lifting device 4, so as to adjust the forming angle of the extrusion nozzle 6 through the angle adjustment mechanism, so that the forming nozzle can maintain a good extrusion injection angle and improve the molding quality. .

The structure design of the polar coordinate numerical control fusion deposition rapid prototyping machine provided by the utility model is ingenious and reasonable, adopts the polar coordinate method for processing, and cooperates with the rotary device 3 to realize the rotary motion, effectively maintaining the uniformity of the feed speed in the straight line and curved motion , to achieve the coherence of the extruded material in the deposition process, the forming speed is fast, and the effect is good; and the overall structure is compact, the operation is convenient, and the working stability is high.

According to the disclosure and teaching of the above specification, those skilled in the art to which the present utility model belongs can also change and modify the above embodiment. Therefore, the utility model is not limited to the above specific implementation manners, and any obvious improvement, replacement or modification made by those skilled in the art on the basis of the utility model shall belong to the protection scope of the utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present utility model. As described in the above-mentioned embodiments of the utility model, other structural molding machines and molding methods obtained by adopting the same or similar structure are within the protection scope of the utility model.

Claims (7)

1. A polar coordinate numerical control fused deposition rapid prototyping machine, which includes a support frame, is characterized in that: it also includes a lateral motion device, a rotary device, a lifting device, a lateral adjustment device and an extrusion nozzle, and the lateral motion device is arranged laterally On the support frame, the slewing device is arranged on the lateral movement device, and is driven by the slewing device for lateral movement, and the lifting device is arranged on the slewing device, and is driven by the slewing device for rotational movement , the horizontal adjusting device is arranged on the lifting device, and is driven by the lifting device to move up and down relative to the horizontal adjusting device, and the extruding nozzle is arranged on the horizontal adjusting device, and is driven by the horizontal adjusting device to relatively rotate Move closer or farther away from the axis of rotation. 2. polar coordinate numerical control fused deposition rapid prototyping machine according to claim 1, is characterized in that, described transverse movement device comprises transverse guide rail, transverse slide block, transverse drive motor, transverse synchronous belt and transverse synchronous wheel, and described transverse The guide rail is arranged horizontally on the top of the support frame, one end of the horizontal synchronous belt corresponding to the horizontal guide rail is arranged on the support frame, and the other end of the horizontal drive motor is arranged on the support frame corresponding to the transverse guide rail. The driving shaft of the driving motor is provided with a driving pulley, which is connected with the horizontal synchronous pulley through the transverse synchronous belt, and the transverse slider is movably arranged on the transverse guide rail, and is connected with the transverse synchronous belt. connect. 3. The polar coordinate numerical control fused deposition rapid prototyping machine according to claim 2, wherein the rotary device includes a rotating motor, a fixed plate, a connecting shaft, a bearing seat, a flange, a toothed belt, and a toothed drive Pulley and toothed driven pulley, the bearing seat is arranged on one side of the fixed plate, the upper end of the connecting shaft is arranged on the bearing seat through a bearing assembly, the lower end passes through the fixed plate, and There is the toothed driven pulley, the rotating motor is arranged on the other side of the fixed plate, and the drive shaft of the rotating motor passes through the fixed plate, and the toothed driving pulley is provided, The toothed driving pulley is connected to the toothed driven pulley through the toothed belt, the flange is fixedly arranged on the upper end of the bearing seat, and the transverse sliding block is fixedly arranged on the flange. 4. The polar coordinate numerical control fused deposition rapid prototyping machine according to claim 3, characterized in that, the upper end of the connecting shaft is provided with a first step and a second step in sequence from top to bottom, wherein the first The step is adapted to the bearing seat through a tapered roller bearing, and the second step is adapted to the bearing seat through a thrust ball bearing. 5. The polar coordinate numerical control fused deposition rapid prototyping machine according to claim 3, wherein the lifting device comprises a lifting motor, a guide rail shaft, a lifting screw, a transverse fixing frame, an upper rotating plate and a lower rotating plate, and the The above-mentioned upper rotating plate is connected with the lower end of the connecting shaft, the lower rotating plate is arranged horizontally directly below the upper rotating plate through guide rail shafts, the lifting motor is arranged on the bottom surface of the lower rotating plate, and the The drive shaft of the lifting motor runs through the lower rotating plate and is connected to the lower end of the lifting screw rod. The upper end of the lifting screw rod extends vertically upwards and is movably arranged on the upper rotating plate through a shaft hole. The transverse fixing frame is movably arranged on the shaft of the guide rail, and is connected with the lifting screw rod through the screw rod seat. 6. The polar coordinate numerical control fused deposition rapid prototyping machine according to claim 5, characterized in that, the lateral adjustment device includes two groups of lateral movement groups symmetrically arranged on the lateral fixing frame, and the lateral movement group includes adjustment A motor, a transverse movement frame, a transverse screw rod and a transverse screw seat adapted to the transverse screw rod, the transverse movement frame is movably arranged on the transverse fixed frame through slide rails, and the transverse screw seat is arranged on the transverse On the moving frame, the adjusting motor is fixedly arranged on the horizontal fixing frame, one end of the horizontal screw rod is connected with the driving shaft of the adjusting motor, and the other end is screwed into the horizontal screw rod seat. 7. The polar coordinate numerical control fused deposition rapid prototyping machine according to claim 1, wherein one end of the extrusion nozzle is arranged on the lower end of the transverse movement frame through a fixed seat, and after the other end extends horizontally for a certain distance, Then slope downwards.