CN114794726A

CN114794726A - Dedicated design table of machine part design

Info

Publication number: CN114794726A
Application number: CN202210440092.XA
Authority: CN
Inventors: 刘刚; 解占新; 闫石林
Original assignee: Jinzhong University
Current assignee: Jinzhong University
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-07-29

Abstract

The invention discloses a special design table for designing mechanical parts, which comprises: the multifunctional portable multifunctional handheld work table comprises an operation table body, wherein a tool operation mechanism is fixedly installed at the top of the operation table body, a waste treatment mechanism and a folding storage mechanism are respectively and fixedly installed at the bottom of the operation table body, the tool operation mechanism comprises a rectangular groove, a calibration rectangular frame is fixedly installed at the bottom of the inner wall of the rectangular groove, the working plane is divided into two working areas, namely a hand-drawing area and a computer-drawing area, the hand-drawing area is designed to be a concave structure, pencil scraps and rubber scraps generated in the hand-drawing process are prevented from scattering onto the working plane, the tidiness of the working plane is further kept, by adopting the working mode, when modeling is carried out after the hand-drawing is finished, real-time reference of a hand-drawing part can be carried out, the thinking definition of a user during modeling is increased, the whole floor area of the equipment is reduced, and the limitation of the space in the area is avoided, reducing the use limitation of the equipment.

Description

Dedicated design table of machine part design

Technical Field

The invention relates to the technical field of mechanical design equipment, in particular to a special design table for mechanical part design.

Background

The mechanical parts are not only a discipline for researching and designing mechanical basic parts in various devices, but also are general names of parts and components, and since the machines appeared, corresponding mechanical parts exist. However, as a subject, the mechanical parts are separated from mechanical structure and mechanics, and with the development of mechanical industry, new design theory and method, new materials and new processes appear, the mechanical parts enter new development stages, and theories such as finite element method, fracture mechanics, elastic fluid dynamic pressure lubrication, optimization design, reliability design, computer aided design, solid modeling, system analysis and design methodology are gradually used for the research and design of the mechanical parts, so that the integration of various subjects is better realized, the combination of macro and micro is realized, new principle and structure are explored, dynamic design and precise design are more adopted, an electronic computer is more effectively utilized, and the design theory and method are further developed, which is an important trend of the development of the subject.

The mechanical device is formed by combining a plurality of mechanical parts, and when each single part is manufactured, the shape design is usually required to be carried out firstly, and the process comprises the following steps: hand drawing rudimentary, sizing, template modeling, and final production material selection, are performed using a designated tool during the design process prior to manufacturing the part.

However, the existing mechanical part design table has the following defects:

because the overall structure of the existing equipment is single, and the number of steps required during the design of parts is large, the equipment cannot be distributed to combine multiple operation modes into a whole, so that in the process of designing the parts, a plurality of pieces of equipment are needed to be cooperated with each other, and then the limitation of the area in the area where the equipment is located can be received, and the limitation of the use of the equipment is large.

We have therefore proposed a design table for the design of mechanical parts in order to solve the problems set out above.

Disclosure of Invention

The invention aims to provide a design table special for designing mechanical parts, which aims to solve the problem that a plurality of devices need to be used for mutual cooperation in an operation area because the existing devices cannot integrate a plurality of operation parts required in the part design process due to single structure.

In order to achieve the purpose, the invention provides the following technical scheme: a design table for machine part design, comprising: the tool operation mechanism is fixedly arranged at the top of the operation desktop body, and the waste treatment mechanism and the folding and containing mechanism are respectively and fixedly arranged at the bottom of the operation desktop body;

the tool operating mechanism comprises a rectangular groove, a calibration rectangular frame is fixedly mounted at the bottom of the inner wall of the rectangular groove, a paper placing area is formed on the inner surface wall of the calibration rectangular frame, an L-shaped metal frame is fixedly mounted at the top of the operating desktop body, a mounting hole is formed in the top of the L-shaped metal frame, a movable rod is movably inserted into the inner surface wall of the mounting hole, a receiving hole is formed in the outer surface wall of the movable rod, an extension rod A is fixedly inserted into the receiving hole, a compass drawing is movably sleeved on the outer surface wall of the extension rod A, three assembly grooves are formed in the top of the operating desktop body, an extension rod A is fixedly inserted between two sides of each inner wall of the three assembly grooves, the outer surface walls of the three extension rods A are fixedly sleeved with L-shaped movable rods, and the outer surface walls of the three L-shaped movable rods are respectively arranged inside the assembly grooves, the multifunctional desk comprises an L-shaped movable rod, an extension rod B, an integrated computer and an operation keyboard and a control mouse, wherein the extension rod B is fixedly inserted into one side of the outer wall of the L-shaped movable rod, the integrated computer is movably inserted between the outer walls of the extension rod B, and the operation keyboard and the control mouse are respectively placed at the top of an operation desktop body.

Preferably, the signal input end of the integrated computer is fixedly connected with a wire A and a wire B respectively, and the wire A and the wire B are connected with the signal output ends of the operation keyboard and the control mouse respectively.

Preferably, the waste treatment mechanism comprises a waste collecting tank, the waste collecting tank is arranged at the bottom of the inner wall of the paper placing area, and a slotting baffle is fixedly arranged on the inner surface wall of the waste collecting tank.

Preferably, the bottom of the operation desktop body is fixedly provided with a grafting plate, a round hole is formed in the grafting plate, a connecting ring is fixedly arranged in the round hole, a pressurizing adsorption device is fixedly inserted into the inner surface wall of the connecting ring, the input end of the pressurizing adsorption device is fixedly communicated with a cooperative pipeline, and the feeding end of the cooperative pipeline penetrates through the bottom of the operation desktop body and is communicated with the inside of the garbage collecting tank.

Preferably, the bottom fixed mounting of operation desktop body has two slides, two the inside of slide all is provided with the T type, two the interior table wall activity of slide is inserted and is equipped with T type slide.

Preferably, two fixed mounting has the waste bin between the bottom of T type slide, the fixed intercommunication of pressure boost adsorption equipment's output has the fortune material pipeline, the discharge end of fortune material pipeline runs through the outward appearance wall of waste bin to be linked together with the inside of waste bin.

Preferably, folding receiving mechanism includes two U type joints, two the equal fixed mounting in the bottom of operation desktop body in top that the U type connects is two the U type connects wherein all fixed the inserting between the inner wall both sides of every and is equipped with extension bar B, and two equal movable sleeves of exterior wall of extension bar B are equipped with the bracing piece, two the equal fixed mounting in bottom of bracing piece has the extension board, two the equal fixed mounting in bottom of extension board has a set of rubber to detain.

Preferably, the bottom fixed mounting of operation desktop body has two U type to connect B, two U type connects B wherein all fixed the inserting is equipped with interior pole C between the inner wall both sides of every, and just two interior pole C's the equal movable sleeve of outward appearance wall is equipped with movable rod A, two the orbit hole has all been seted up to movable rod A's the mutually opposite side of the body, and the inside of two orbit holes is all fixed the inserting and is equipped with extension rod C.

Preferably, two equal movable sleeve of apparent wall of extension rod C is equipped with movable rod B, two equal fixed mounting in outer wall one side of bracing piece has a connecting block, two the back of the body one side of the back of the body of connecting block all is fixed to be inserted and is equipped with extension rod D, two the apparent wall of establishing extension rod D is inserted in activity respectively in outer wall one side of movable rod B.

Preferably, the top at the operation desktop body is seted up to the rectangle recess, the paper is placed regional inner wall bottom and is adsorbed two magnetic stripes, the bottom of operation desktop body is fixed to be inserted and is equipped with extension rod E, extension rod E's outward appearance wall movable sleeve is equipped with the fly leaf, the bottom fixed mounting of fly leaf has the installation lantern ring.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention puts the drawing paper into the paper placing area, presses the magnetic strip on the paper placing area, rotates the movable rod to drive the drawing compasses to draw when drawing the workpieces such as gears, bearings and the like, and uses the operation keyboard and the control mouse to operate the integrated computer to complete the modeling process after the drawing is completed, the equipment divides the working plane into two working areas, namely a hand-drawing area and a computer drawing area, and designs the hand-drawing area into a concave structure to avoid the pencil chips and the eraser chips generated in the hand-drawing process from scattering on the working plane and further keep the tidiness of the working plane, by adopting the working mode, when the modeling is completed after the hand-drawing is completed, the real-time reference of the hand-drawing part can be carried out, the thinking definition of a user during the modeling is increased, and the problem that the existing equipment cannot combine a plurality of operation modes into a whole due to a single structure is effectively solved, the problem that a plurality of devices need to cooperate with each other in the process of part design is caused, the overall floor area of the device is reduced, the limitation of the space in the area where the device is located is avoided, and the use limitation of the device is reduced.

2. According to the invention, the pressurization adsorption device in the connecting ring is started, the generated adsorption force acts on the cooperative pipeline, the scraps in the scrap collecting tank are treated, then the scraps are transported to the scrap box through the material transporting pipeline, after the scraps are treated, the material transporting pipeline is pulled out, the scrap box is taken out of the equipment by utilizing the movable connection between the T-shaped sliding plate and the slide way for cleaning, a scrap treatment mechanism is arranged, most of the scraps are carried out by adopting a pencil when a hand drawing is carried out, the pencil is easy to modify due to the fact that the postnatal track of the pencil is easy to modify by using an eraser, a large amount of scraps can be produced in the operation process, at the moment, the scraps are firstly collected together through the adsorption component in the equipment and then are rapidly guided into the scrap collecting container, the scraps are effectively prevented from being scattered into a plurality of parts in the equipment after being accumulated, the treatment difficulty in the later period is reduced, and the equipment can be continuously used.

3. According to the folding table top, the operation table top body is pressed, the movable rod A and the movable rod B are subjected to angle deviation under the influence of pressure, the operation table top body is driven to rotate by utilizing the movable connection between the U-shaped joint and the supporting rods, the bottom of the operation table top body is attached to the outer wall of the two supporting rods, the folding storage mechanism is arranged, after the equipment is used, a plurality of movable connecting pieces are utilized, each structural point provides a strong damping effect, when the folding table top needs to be folded, the working plane is installed, the generated pressure is larger than the resistance of the structural points, a plurality of assemblies are integrated into a vertical body, the transverse area is reduced, and the storage of the equipment is effectively improved.

Drawings

FIG. 1 is a perspective view of a front view structure of a design table for designing mechanical parts according to the present invention;

FIG. 2 is a perspective view of a top view of a design table for designing mechanical components according to the present invention;

FIG. 3 is a perspective view of the bottom structure of a design table for the design of mechanical parts according to the present invention;

FIG. 4 is a schematic diagram of a design table middle plane structure dedicated for designing a mechanical part according to the present invention;

FIG. 5 is an enlarged perspective view of the structure at A of FIG. 1 of a design table for designing mechanical parts according to the present invention;

FIG. 6 is an enlarged perspective view of the structure at B in FIG. 2 of a design table for designing mechanical parts according to the present invention;

fig. 7 is an enlarged perspective view of a design table for designing a mechanical part according to the present invention, which is shown at C in fig. 3.

In the figure: 1. operating the desktop body; 201. a rectangular groove; 202. calibrating the rectangular frame; 203. a paper placing area; 204. an L-shaped metal frame; 205. a movable rod; 206. a receiving hole; 207. an extension rod A; 208. drawing compasses; 209. assembling a groove; 210. an L-shaped movable rod; 211. an extension rod B; 212. an all-in-one computer; 213. operating a keyboard; 214. controlling the mouse; 301. a waste collection tank; 302. a slotted baffle; 303. a grafting plate; 304. a connecting ring; 305. a pressure-increasing adsorption device; 306. a cooperating conduit; 307. a slideway; 308. a T-shaped sliding plate; 309. a waste bin; 310. a material conveying pipeline; 401. a U-shaped joint; 402. a support bar; 403. a U-shaped joint B; 404. a movable rod A; 405. an extension rod C; 406. a movable rod B; 407. connecting blocks; 408. an extension rod D; 409. a support plate; 410. rubber buttons; 5. a magnetic strip; 6. an extension rod E; 7. a movable plate; 8. and installing a lantern ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: a design table for machine part design, comprising: the operation desktop body 1, the top fixed mounting of operation desktop body 1 has instrument operating device, and the bottom of operation desktop body 1 fixed mounting respectively has waste disposal mechanism and folding receiving mechanism.

According to the figures 1-6, the tool operating mechanism comprises a rectangular groove 201, a calibration rectangular frame 202 is fixedly installed at the bottom of the inner wall of the rectangular groove 201, a paper placing area 203 is formed on the inner surface wall of the calibration rectangular frame 202, an L-shaped metal frame 204 is fixedly installed at the top of the operating table top body 1, an installation hole is formed in the top of the L-shaped metal frame 204, a movable rod 205 is movably inserted into the inner surface wall of the installation hole, a receiving hole 206 is formed in the outer surface wall of the movable rod 205, an extension rod a207 is fixedly inserted into the receiving hole 206, a drawing compass 208 is movably sleeved on the outer surface wall of the extension rod a207, three assembly grooves 209 are formed in the top of the operating table top body 1, an inner extension rod a is fixedly inserted between two sides of the inner wall of each of the three assembly grooves 209, an L-shaped movable rod 210 is fixedly sleeved on the outer surface walls of the three inner extension rods a, the outer surface walls of the three L-shaped movable rods 210 are respectively arranged inside the assembly grooves 209, the device divides a working plane into two working areas, namely a hand-drawing area and a computer-drawing area, and the hand-drawing area is designed to be a concave structure, so that pencil scraps and eraser scraps generated in the hand-drawing process are prevented from scattering on the working plane, the tidiness of the working plane is further kept, when modeling is carried out after the hand-drawing is finished, real-time reference of a hand-drawing part can be carried out, the definition of thinking of a user in modeling is increased, the problem that the existing device cannot be combined into a whole due to single structure is effectively solved, and in the process of part design, the problem that a plurality of devices are cooperated with one another is needed, the whole occupied area of the devices is reduced, the limitation of the space in the area where the devices are located is avoided, and the use limitation of the devices is reduced.

As shown in fig. 1-4, the signal input terminal of the all-in-one computer 212 is fixedly connected with a wire a and a wire B, respectively, and the wire a and the wire B are connected with the signal output terminals of the operation keyboard 213 and the control mouse 214, respectively, so that the operation command can be quickly introduced into the all-in-one computer 212 by passing the signal through the wire a and the wire B.

According to fig. 1-4 and 7 show, waste disposal mechanism includes garbage collection groove 301, garbage collection groove 301 sets up in the inner wall bottom that paper was placed regional 203, garbage collection groove 301's interior table wall fixed mounting has fluting baffle 302, through setting up waste disposal mechanism, when the drawing is painted to the hand, mostly adopt the pencil to go on, easily use the rubber to modify because of the postpartum orbit of pencil, in-process in the operation, can a large amount of sweeps postpartum, this moment through the adsorption component in the equipment, concentrate the sweeps together earlier, again in leading-in sweeps collecting container fast, effectively avoid the sweeps to pile up the back, scatter to in the equipment in a plurality of parts, alleviate the processing degree of difficulty in later stage, make equipment sustainable the using.

According to fig. 1-4 and fig. 7, the bottom of the operation desktop body 1 is fixedly provided with a grafting plate 303, a round hole is formed in the grafting plate 303, a connection ring 304 is fixedly arranged in the round hole, a pressurizing adsorption device 305 is fixedly inserted into the inner surface wall of the connection ring 304, the input end of the pressurizing adsorption device 305 is fixedly communicated with a cooperative pipeline 306, the feeding end of the cooperative pipeline 306 penetrates through the bottom of the operation desktop body 1 and is communicated with the inside of the garbage collection groove 301, the pressurizing adsorption device 305 is arranged to provide a pressurizing adsorption effect for the whole mechanism, and scraps accumulated in the garbage collection groove 301 are quickly treated.

According to the drawings of fig. 1-4 and 7, two slideways 307 are fixedly installed at the bottom of the operating table top body 1, T-shapes are arranged inside the two slideways 307, T-shaped sliding plates 308 are movably inserted into the inner surface walls of the two slideways 307, and necessary conditions are provided for the removal of the waste bin 309 by utilizing the movable connectivity between the T-shaped sliding plates 308 and the slideways 307.

According to the drawings of fig. 1-4 and fig. 7, a waste box 309 is fixedly installed between the bottoms of the two T-shaped sliding plates 308, a material conveying pipeline 310 is fixedly communicated with the output end of the pressurizing adsorption device 305, the discharge end of the material conveying pipeline 310 penetrates through the outer surface wall of the waste box 309 and is communicated with the interior of the waste box 309, and waste chips are enabled to be provided with a storage container through the waste box 309 so as to be prevented from scattering into a working area.

According to the figures 1-4, the folding and storing mechanism comprises two U-shaped joints 401, the tops of the two U-shaped joints 401 are fixedly arranged at the bottom of the operation table top body 1, an inner connecting rod B is fixedly inserted between two sides of the inner wall of each of the two U-shaped joints 401, the outer walls of the two inner connecting rods B are movably sleeved with supporting rods 402, the bottoms of the two supporting rods 402 are fixedly provided with supporting plates 409, the bottoms of the two supporting plates 409 are fixedly provided with a group of rubber buckles 410, and by arranging a folding and accommodating mechanism, after the equipment is used, a plurality of movable connecting pieces are utilized, and each structural point provides stronger damping effect, when needs are folded, the installation work plane makes the pressure that produces be greater than the resistance of structure point department, makes a plurality of subassemblies integration be a vertical body, reduces horizontal area, effectively improves accomodating of equipment.

According to fig. 1-4, the bottom of the operation desktop body 1 is fixedly provided with two U-shaped joints B403, two U-shaped joints B403 are fixedly inserted between two sides of each inner wall, inner rods C are fixedly inserted between two sides of each inner wall, outer walls of the two inner rods C are movably sleeved with movable rods a404, track holes are formed in the two opposite sides of the two movable rods a404, extending rods C405 are fixedly inserted in the two track holes, and the movable rods a404 and the extending rods C405 have the capability of changing angles by setting a plurality of movable connection points.

According to the drawings of fig. 1-4, the outer walls of the two extension rods C405 are movably sleeved with the movable rod B406, one side of the outer wall of each of the two support rods 402 is fixedly provided with a connecting block 407, the opposite sides of the two connecting blocks 407 are fixedly inserted with the extension rods D408, one side of the outer wall of each of the two extension rods B406 is movably inserted into the outer wall of each of the extension rods D408, and through the connection relationship, when the angle between the movable rod a404 and the movable rod B406 is changed, the operation table top body 1 can be driven to change the angle.

According to the drawings of fig. 1-4, a rectangular groove 201 is formed in the top of an operation desktop body 1, two magnetic stripes 5 are adsorbed on the bottom of the inner wall of a paper placing area 203, an extension rod E6 is fixedly inserted in the bottom of the operation desktop body 1, a movable plate 7 is movably sleeved on the outer wall of the extension rod E6, a mounting sleeve ring 8 is fixedly mounted at the bottom of the movable plate 7, and the connection relation between the rectangular groove 201 and the whole device is determined.

The effect that its whole mechanism reaches does: firstly, a plurality of movable inserting parts are arranged on the top of an operation desktop body 1, equipment is moved to a designated working area, the bottom of a support plate 409 is fully contacted with the ground, drawing paper is placed in a paper placing area 203, then a magnetic strip 5 is pressed on the paper, when workpieces such as gears, bearings and the like are drawn, a movable rod 205 is rotated to drive a drawing compass 208 to draw a drawing, after the drawing is completed, an operation keyboard 213 and a control mouse 214 are utilized to operate an integrated computer 212 to complete a modeling process, wrong parts in the manuscript entering process need to be modified in the manual drawing process, but when the parts are wiped by rubber, a large amount of scraps are generated and fall into a scrap collecting tank 301 through a slot moving position on a slot baffle plate 302, at the moment, a pressurizing adsorption device 305 in a connecting ring 304 is started, the generated adsorption force acts on a cooperative pipeline 306, and the scraps in the scrap collecting tank 301 are treated, and then transported to a waste bin 309 through a material transporting pipeline 310, after the waste scraps are processed, the material transporting pipeline 310 is pulled out, the waste bin 309 is taken out of the equipment for cleaning by utilizing the movable connection between a T-shaped sliding plate 308 and a sliding rail 307, after the equipment is finished, a plurality of movable assembly parts are disassembled, the operation desktop body 1 is pressed, under the influence of pressure, the movable rod A404 and the movable rod B406 are subjected to angle deviation, meanwhile, the operation desktop body 1 is driven to rotate by utilizing the movable connection between the U-shaped joint 401 and the supporting rods 402, and finally, the bottom of the operation desktop body 1 is attached to the outer surface walls of the two supporting rods 402.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a dedicated design table of machine part design which characterized in that: the method comprises the following steps: the tool operating mechanism is fixedly arranged at the top of the operating desktop body (1), and the waste material processing mechanism and the folding and containing mechanism are respectively and fixedly arranged at the bottom of the operating desktop body (1);

the tool operating mechanism comprises rectangular grooves (201), a calibration rectangular frame (202) is fixedly mounted at the bottom of the inner wall of each rectangular groove (201), a paper placing area (203) is formed on the inner surface wall of the calibration rectangular frame (202), an L-shaped metal frame (204) is fixedly mounted at the top of the operating desktop body (1), a mounting hole is formed in the top of the L-shaped metal frame (204), a movable rod (205) is movably inserted into the inner surface wall of the mounting hole, a containing hole (206) is formed in the outer surface wall of the movable rod (205), an extension rod A (207) is fixedly inserted into the containing hole (206), compasses (208) are movably sleeved on the outer surface wall of the extension rod A (207), three assembly grooves (209) are formed in the top of the operating desktop body (1), and an inner connecting rod A is fixedly inserted between two sides of each inner wall of the assembly grooves (209), and the equal fixed cover of outer wall of three internal rod A is equipped with L type movable rod (210), and is three the outer wall of L type movable rod (210) sets up respectively in the inside of assembly groove (209), and is three outer wall one side of L type movable rod (210) is all fixed to be inserted and is equipped with extension rod B (211), and is three the activity is inserted between the outer wall of extension rod B (211) and is equipped with integral type computer (212), operating keyboard (213) and control mouse (214) have been placed respectively at the top of operation desktop body (1).

2. The design table for machine part design as claimed in claim 1, wherein: the signal input end of the integrated computer (212) is fixedly connected with a wire A and a wire B respectively, and the wire A and the wire B are connected with the signal output ends of an operation keyboard (213) and a control mouse (214) respectively.

3. The design table for machine part design as claimed in claim 1, wherein: the waste treatment mechanism comprises a waste collecting tank (301), the waste collecting tank (301) is arranged at the bottom of the inner wall of the paper placing area (203), and a slotting baffle (302) is fixedly arranged on the inner surface wall of the waste collecting tank (301).

4. The design table for machine part design as claimed in claim 3, wherein: the bottom fixed mounting of operation desktop body (1) has grafting board (303), the round hole has been seted up in the inside of grafting board (303), and the inside fixed mounting of round hole has connecting ring (304), the interior table wall of connecting ring (304) is fixed to be inserted and is equipped with pressure boost adsorption equipment (305), the fixed intercommunication of input of pressure boost adsorption equipment (305) has in coordination pipeline (306), the feed end of in coordination pipeline (306) runs through the bottom of operation desktop body (1) to be linked together with the inside of garbage collection groove (301).

5. The design table for machine part design as claimed in claim 3, wherein: the bottom fixed mounting of operation desktop body (1) has two slides (307), two the inside of slide (307) all is provided with the T type, two the interior table wall activity of slide (307) is inserted and is equipped with T type slide (308).

6. The design table for machine part design as claimed in claim 5, wherein: two fixed mounting has waste bin (309) between the bottom of T type slide (308), the fixed intercommunication of output of pressure boost adsorption equipment (305) has fortune material pipeline (310), the discharge end of fortune material pipeline (310) runs through the outward appearance wall of waste bin (309) to be linked together with the inside of waste bin (309).

7. The design table for machine part design as claimed in claim 1, wherein: folding receiving mechanism includes two U type joints (401), two the equal fixed mounting in the bottom of operation desktop body (1) in top that U type joint (401) connect, two U type joint (401) wherein between the inner wall both sides of every all fixed insert be equipped with interior pole B, and two interior pole B's the equal movable sleeve of outward appearance wall is equipped with bracing piece (402), two the equal fixed mounting in bottom of bracing piece (402) has extension board (409), two the equal fixed mounting in bottom of extension board (409) has a set of rubber to detain (410).

8. The design table for machine part design as claimed in claim 7, wherein: the bottom fixed mounting of operation desktop body (1) has two U type to connect B (403), two U type connects B (403) wherein all fixed the inserting between the inner wall both sides of every is equipped with interior pole C, and two interior pole C's outward appearance wall is all movable sleeve to be equipped with movable rod A (404), two the orbit hole has all been seted up to the back of the body one side of mutually backing on of movable rod A (404), and the inside of two orbit holes is all fixed the inserting and is equipped with extension rod C (405).

9. The design table for machine part design as claimed in claim 8, wherein: two the equal movable sleeve of outward appearance wall of extension rod C (405) is equipped with movable rod B (406), two the equal fixed mounting in outer wall one side of bracing piece (402) has connecting block (407), two the back of the body one side of mutually of connecting block (407) is all fixed to be inserted and is equipped with extension rod D (408), two the outward appearance wall of establishing extension rod D (408) is inserted in the activity respectively in outer wall one side of movable rod B (406).

10. The design table for machine part design as claimed in claim 1, wherein: rectangle recess (201) are seted up at the top of operation desktop body (1), the inner wall bottom adsorption that the region (203) was placed to the paper has two magnetic stripes (5), the bottom of operation desktop body (1) is fixed to be inserted and is equipped with extension rod E (6), the outward appearance wall activity cover of extension rod E (6) is equipped with fly leaf (7), the bottom fixed mounting of fly leaf (7) has the installation lantern ring (8).