CN208744187U

CN208744187U - A replacement structure for a machining center pallet

Info

Publication number: CN208744187U
Application number: CN201821081070.4U
Authority: CN
Inventors: 金戎; 金雷; 欧磊
Original assignee: Suzhou Hung Shun Automation Equipment Co Ltd
Current assignee: Suzhou Hung Shun Automation Equipment Co Ltd
Priority date: 2018-07-09
Filing date: 2018-07-09
Publication date: 2019-04-16
Anticipated expiration: 2028-07-09

Abstract

A kind of machining center tray replacing structure, comprising: bracket, machining center coaming plate, pallet permutation component；Compared with permutation component in the prior art, it has the advantage that and is provided with the pallet permutation component that multiple groups can slide laterally on the first sliding rail, the second sliding rail or so, during machining progress, in the first pulley group for the support plate that the pallet for being mounted with workpiece to be added can be put into vacant pallet permutation component by operator, it carries out Rapid replacement and shortens the waiting time, improve equipment mobility and processing efficiency；Secondly, coordinate of the pallet permutation component on the first sliding rail can be made to fix by replacing positioning component, pallet permutation component is avoided to horizontally slip；Furthermore the generation of sliding derailment occurring is avoided by the sliding limit between the guide plate in roller mounting plate lateral plates and the tension item of tray bottom plate face.

Description

A kind of machining center tray replacing structure

Technical field

The utility model relates to numerical control machining machine equipment technical field, specially a kind of machining center tray displacement knot Structure.

Background technique

Numerical control processing refers to a kind of process for carrying out part processing on numerically-controlled machine tool, is widely used in structure zero The machine-shaping of component, mold.The selected airplane parts with complex profile of numerically-controlled machine tool solve common as processing object The insoluble key of processing method is one of being preferably selected for complex-shaped structural member processing.

In order to simplify processing plot structure, facilitate artificial workpiece loading and unloading and the non-processing waiting time be greatly shortened, improves and add The mobility of work efficiency rate and numerically controlled processing equipment is generally equipped with machining center tray to numerically-controlled machine tool, and processed product is direct It is placed on pallet or is fixed on pallet using specific clamping jig as intermediary, then grasped by the processing that numerically-controlled machine tool carries out components Make, since the cost of numerically-controlled machine tool is higher, vacant overlong time will cause unnecessary waste, need in existing machining center tray Configuring simple and efficient displacement mechanism just can be relieved the low problem of equipment mobility；Secondly, existing displacement mechanism mostly uses Slidingtype permutation component, but since not set sliding limit assembly causes pallet to be also easy to produce derailment occurring when sliding.

Summary of the invention

A kind of machining center tray replacing structure, comprising: bracket 1, machining center coaming plate 2, pallet permutation component；Bracket 1 is located at the side enabling side of machining center coaming plate 2, and pallet permutation component is located on bracket 1, and pallet positioning component is placed in processing In the enclosed space of center coaming plate 2；

Bracket 1 include rack body 11, be fixed on 11 bottom face of rack body support leg 12, be screwed in rack body 11 First sliding rail 13 of plane on the crossbearer of the top is mounted on the first sliding block that can be slided on the first sliding rail 13 and along the first sliding rail 13 14；

Machining center coaming plate 2 is the structure that surrounding encloses connection, and the side of machining center coaming plate 2 is machined with pallet charging Mouth 21, the lower end surface of machining center coaming plate 2 are provided with the supporting table 22 of certain altitude, and the upper surface spiral shell of supporting table 22 is inherently fixed The positioning seat 23 of pallet positioning component；

Pallet permutation component includes support plate 3, roller mounting plate 4, the first roller group 5, and 3 screw of support plate is fixed on first The upper surface of sliding block 14, the symmetrical spiral shell in both sides of 3 width centreline of support plate are consolidated there are two roller mounting plate 4, roller mounting plate 4 Lateral surface passes through nut and is equipped with the first roller group 5, wherein the upper surface of nut lower than roller mounting plate 4 upper surface and the Rolling surface height is identical on idler wheel in one roller group 5 and is above 4 upper surface 3mm~10mm of roller mounting plate, pallet displacement Component can change the horizontal position of pallet permutation component by the first sliding block 14 horizontally slipping on the first sliding rail 13, keep its right Pallet feed inlet 21 in quasi- or separate machining center coaming plate 2；

The side end face of pallet 6, which is tightened up a screw, is equipped with handle 61, is convenient for operator's hand-held；

The pallet 6 for being mounted with workpiece to be added is put into pallet permutation component by above-mentioned machining center tray replacing structure In first roller group 5, by push pallet 6 make its successively pass through the first roller group 5 slide into it is to be positioned in machining center coaming plate 2 Working position；While the workpiece to be added on first pallet 6 in machining center coaming plate 2 is carrying out numerical control processing, it can incite somebody to action Pallet permutation component is pushed away pallet charging by the opposite sliding between the first sliding block 14, the first sliding rail 13 by pallet permutation component 21 positions of mouth, at this time operator can will be mounted with the pallet 6 of next group workpiece to be added, can tentatively shorten machining center tray In workpiece to be added replacement, shorten the stand-by time of numerically-controlled machine tool.

Preferably, the machining center tray replacing structure, including 2~3 groups can independent slide pallet permutation component. After multiple groups pallet permutation component is arranged, the pallet permutation component for loading first pallet 6 can still be located at the position of pallet feed inlet 21 Set, when the workpiece to be added on the first pallet 6 after processing is completed, operator can hold handle 61 for first 6 road Zai Yuan of pallet Line reversely pulls out in machining center coaming plate 2, and operator is avoided to need to reach hand in machining center coaming plate 2, on the one hand improves number The safe operating factor for controlling extra bed, on the other hand avoiding operator from significantly acting pickup reduces labor intensity.

Preferably, the machining center tray replacing structure further includes that displacement positioning component 7 wraps in pallet permutation component Include dust cover 71, positioning plate 72, locating rod 73, locating rod 73 passes perpendicularly through the front and back plate face of dust cover 71, dust cover 71 it is upper The lower face spiral shell of plate face and support plate 3 is solidly connected, and the inside plate face screw of plate face is fixed with " several " shape locating rod after dust cover 71 Fixed plate 74, rear plate face outer panel face screw are fixed with axle sleeve 75, and locating rod 73 passes through 74 foreboard of " several " shape locating rod fixed plate Limited block 77, locating rod 73 is nested and fixed in locating rod 73 in the circle center hole of plate face after the through-hole in face, dust cover 71, axle sleeve 75 On be cased with the both ends of spring 76 and spring 76 and contradict plate face in locating rod fixed plate 74, limited block 77 respectively, locating rod 73 is prolonged Stretch direction pair the position screws of 11 crossbearer lateral plates of rack body be fixed with two sides inclination and widthwise central is machined with half The positioning plate 72 of circular groove 721 is determined in positioning component 12 while pallet permutation component slides laterally with the first sliding block 14 Position bar 73 can slide into semi-circular recesses 721 along the inclined plate surface of positioning plate side, during this process, due in positioning plate 72 Inclined plate surface to the active force of locating rod 73 can make spring 76 first occur compression when moving in semi-circular recesses 721 spring Part, which occurs, for 76 length returns and stretches, and is stuck in locating rod 73 in semi-circular recesses 721, when needing pallet permutation component pushing away support The locating rod 73 that only needs first to pull back manually when disk 21 position of feed inlet makes its end be detached from semi-circular recesses 721.

The setting of above-mentioned positioning component 12 is kept away it is possible to prevente effectively from when pallet 6 is promoted or pushed away in machining center coaming plate 2 Exempt from the support plate 3 in pallet permutation component on the first sliding rail 13 left and right slide repeatedly, save operator repeatedly with machining center The trouble of the alignment of pallet feed inlet 21 positioning in coaming plate 2.

Preferably, the machining center tray replacing structure, rack body 11 are located at the crossbearer below the crossbearer of the top The locking of lateral plates screw has the second sliding rail 15, and the second sliding block 16 on the rear plate face of 71 back side panel of dust cover and the second sliding rail 15 Screw locking.

The sliding support for being provided as dust cover 71 of second sliding rail 15, along between dust cover 71 and support plate 3 Be connected and fixed relationship, on the one hand can be more conducive to sliding of the pallet permutation component on the first sliding rail 13, the second sliding rail 15, it is another Aspect can be passed to the gravity of pallet permutation component on bracket 1 by the support of sliding rail, after avoiding the long-term hanging stress of support plate 3 Deformation scrap.

Preferably, the machining center tray replacing structure, the second sliding rail 15 are ball screw, and the second sliding block 16 is to add Work has the screw bushing structure with the matched screw thread of ball screw, and ball screw is fixedly connected with the power output shaft of motor.

So that ball screw is rotated by opening motor, and then makes the second sliding block 16 of screw bushing structure in ball screw knot It is moved on second sliding rail 15 of structure, and then drives entire pallet permutation component relative to 1 or so transverse movement of bracket, avoided by grasping Work person is manually pushed, and reduces labor intensity while improving pallet displacement efficiency.

Preferably, the machining center tray replacing structure, pallet 6 are aluminium sheet, the bottom surface of pallet 6 and the first roller group The position of 5 contacts is machined with the sliding panel 62 of the intrinsic steel material of spiral shell in rectangular recess and rectangular recess.

6 lighter in weight of pallet of aluminium material is convenient for manual operation, but holds after rolling friction repeatedly occurs with idler wheel for a long time It is also easy to produce rolling notchcutting, the sliding panel 62 of steel is directly in contact with idler wheel can protect 6 surface of aluminium sheet material pallet well Integrality.

Preferably, the machining center tray replacing structure, the end vertical of roller mounting plate 4 in pallet permutation component It is fixed with stiffening plate 41, and is machined with strip holding tank 411 in stiffening plate 41, lateral plates of the roller mounting plate 4 close to front end Upper to be fixed with rotary shaft by nut, rotary shaft passes perpendicularly through the front end plate face of strip 42, and wherein strip 42 includes integral structure 45 ° of inclination pinch plates 421, extension rods 422, the extension rod 422 of strip 42 is placed in strip holding tank 411 and extension rod 422 Front end side be machined with the first fixation hole of tension spring 4221, the second fixation hole of tension spring 31 is machined in 3 plate face of support plate, tension spring Both ends are separately fixed at the first fixation hole of tension spring 4221, in the second fixation hole of tension spring 31, the non-stress tension spring of strip 42 (being not drawn into) is in micro-stretching state in figure and the 421 upper surface height of inclination pinch plate of strip 42 is higher than in roller mounting plate 4 End face 3mm~10mm, extension rod 422 lower face horizontal abutment in strip holding tank 411, corresponding, steel in pallet 6 The corresponding position of the lower face of sliding panel 62 is machined with buckle slot 621, first roller group 5 of the pallet 6 in pallet permutation component First the length that 421 upper surface of inclination pinch plate of strip 42 pushes tension spring simultaneously further can be stretched in upper sliding process, After inclination 421 upper surface of pinch plate is buckled in sliding panel 62 in buckle slot 621, the length meeting portion rebounds of tension spring, at this moment Pallet 6 is positioned in sliding permutation component by buckling combination, and the double swerve in pallet permutation component of pallet 6 is avoided to make it Deviate the sphere of action of the first roller group 5, wherein the difference in height of inclination 421 upper surface of pinch plate and 4 upper surface of roller mounting plate Should not be too large, otherwise can make pallet 6 block be difficult to continue front and back slide.

Preferably, the outside plate face of the machining center tray replacing structure, roller mounting plate 4 is provided with guide plate 43, the idler wheel in the first roller group 5 is located in the space that guide plate 43 and 4 side plate of roller mounting plate are formed, wherein two side wheels The distance of the outer side edges of mounting plate 4 is less than 6 bottom surface of pallet and tenses in item 63 between the relative inner plate face in lower end transverse slat face Distance 0.5mm~1mm.When pallet 6 slides in support plate 3 along the pulley blocks 5 in pallet permutation component, 6 lower end of pallet The outside plate face sliding friction formula relative motion for tensing item 63 meeting and guide plate 43 of face width two sides, avoid pallet 6 in pallet Sliding derailment occurring in permutation component.

Detailed description of the invention:

Specific embodiment is further described with reference to the accompanying drawing, in which:

Fig. 1 be the utility model relates to machining center tray replacing structure overall structure diagram；

Fig. 2 be the utility model relates to machining center tray replacing structure machining center coaming plate structural schematic diagram；

Fig. 3 be the utility model relates to machining center tray replacing structure in replace positioning component structural representation Figure；

Fig. 4 be the utility model relates to machining center tray replacing structure in the part-structure of pallet permutation component show It is intended to；

Fig. 5 be the utility model relates to machining center tray replacing structure partial structure diagram；

Fig. 6 be the utility model relates to machining center tray replacing structure in pallet structural schematic diagram；

It is as follows to number corresponding specific structure:

Bracket 1, rack body 11, support leg 12, the first sliding rail 13, the first sliding block 14, the second sliding rail 15, the second sliding block 16, machining center coaming plate 2, pallet feed inlet 21, supporting table 22, positioning seat 23, support plate 3, the second fixation hole of tension spring 31, idler wheel Mounting plate 4, stiffening plate 41, strip holding tank 411, strip 42 tilt pinch plate 421, extension rod 422, the first fixation hole of tension spring 4221, guide plate 43, the first roller group 5, pallet 6, handle 61, sliding panel 62, buckle slot 621, tension item 63, displacement positioning group Part 7, dust cover 71, positioning plate 72, semi-circular recesses 721, locating rod 73, locating rod fixed plate 74, axle sleeve 75, spring 76, limit Position block 77,

Specific embodiment

The following detailed description will be further explained with reference to the above drawings the utility model.

Case 1 is embodied:

A kind of machining center tray replacing structure, comprising: bracket 1, machining center coaming plate 2, pallet permutation component；Bracket 1 is located at the side enabling side of machining center coaming plate 2, and pallet permutation component is located on bracket 1, and pallet positioning component is placed in processing In the enclosed space of center coaming plate 2；Bracket 1 includes rack body 11, the support leg 12 for being fixed on 11 bottom face of rack body, spiral shell Gu the first sliding rail 13 of plane on 11 the top crossbearer of rack body, is mounted on the first sliding rail 13 and can be along the first sliding rail 13 First sliding block 14 of sliding；Machining center coaming plate 2 is no upper cover, surrounding encloses the structure of connection, the side of machining center coaming plate 2 Face is machined with pallet feed inlet 21, and the lower end surface of machining center coaming plate 2 is provided with the supporting table 22 of certain altitude, supporting table 22 The positioning seat 23 of the intrinsic fixed tray positioning component of upper surface spiral shell；Pallet permutation component include support plate 3, roller mounting plate 4, First roller group 5,3 screw of support plate are fixed on the upper surface of the first sliding block 14, the symmetrical spiral shell in both sides of 3 width centreline of support plate Gu the lateral surface of roller mounting plate 4 passes through nut and is equipped with the first roller group 5 there are two roller mounting plate 4, wherein nut Rolling surface height is identical on idler wheel of the upper surface lower than the upper surface of roller mounting plate 4 and in the first roller group 5 and is above rolling 4 upper surface 4mm of mounting plate is taken turns, pallet permutation component can pass through horizontally slip change support of first sliding block 14 on the first sliding rail 13 The horizontal position of disk permutation component is directed at it or far from the pallet feed inlet 21 in machining center coaming plate 2；The side of pallet 6 Face, which is tightened up a screw, is equipped with handle 61, is convenient for operator's hand-held.

It further, further include that displacement positioning component 7 includes dust cover 71, positioning plate 72, positions in pallet permutation component Bar 73, locating rod 73 pass perpendicularly through the front and back plate face of dust cover 71, and the upper face of dust cover 71 and the lower face spiral shell of support plate 3 are solid It connects, the inside plate face screw of plate face is fixed with " several " shape locating rod fixed plate 74, rear plate face outer panel face spiral shell after dust cover 71 Silk is fixed with axle sleeve 75, and locating rod 73 passes through plate face, axis after the through-hole of 74 front face of " several " shape locating rod fixed plate, dust cover 71 75 circle center hole is covered, limited block 77 is nested and fixed in locating rod 73, the both ends of spring 76 and spring 76 are cased in locating rod 73 Contradict the plate face in locating rod fixed plate 74, limited block 77 respectively, 73 extending direction of locating rod pair 11 crossbearer of rack body The position screw of lateral plates is fixed with two sides inclination and widthwise central is machined with the positioning plates 72 of semi-circular recesses 721, pallet Locating rod 73 while permutation component slides laterally with the first sliding block 14 in positioning component 12 can inclining along positioning plate side Inclined plate face slides into semi-circular recesses 721, during this process, the effect due to the inclined plate surface in positioning plate 72 to locating rod 73 The length generation part time that power can make spring 76 first occur to compress the spring 76 when moving in semi-circular recesses 721 is stretched, and it is fixed to make Position bar 73 is stuck in semi-circular recesses 721, is only needed when needing pallet permutation component pushing away pallet 21 position of feed inlet on the offensive Dynamic locating rod 73 of pulling back makes its end be detached from semi-circular recesses 721.

Further, rack body 11, which is located at the locking of the crossbearer lateral plates screw below the crossbearer of the top, the second sliding rail 15, and 16 screw of the second sliding block on the rear plate face of 71 back side panel of dust cover and the second sliding rail 15 locks.

Further, the second sliding rail 15 is ball screw, and the second sliding block 16 is to be machined with and the matched screw thread of ball screw Screw bushing structure, ball screw is fixedly connected with the power output shaft of motor.

Further, pallet 6 is aluminium sheet, and the position that the bottom surface of pallet 6 is contacted with the first roller group 5 is machined with rectangular recess And in rectangular recess the intrinsic steel material of spiral shell sliding panel 62.

Further, the end vertical of roller mounting plate 4 is fixed with stiffening plate 41, and stiffening plate 41 in pallet permutation component On be machined with strip holding tank 411, roller mounting plate 4 is fixed with rotary shaft by nut in the lateral plates of front end, rotation Shaft passes perpendicularly through the front end plate face of strip 42, and wherein strip 42 includes 45 ° of inclinations pinch plates 421, extension rod of integral structure 422, the extension rod 422 of strip 42 is placed in strip holding tank 411 and the front end side of extension rod 422 is machined with tension spring first and consolidates Determine hole 4221, the second fixation hole of tension spring 31 is machined in 3 plate face of support plate, it is solid that the both ends of tension spring are separately fixed at tension spring first Determine hole 4221, in the second fixation hole of tension spring 31, the non-stress tension spring (being not drawn into figure) of strip 42 is in micro-stretching state And the 421 upper surface height of inclination pinch plate of strip 42 is higher than under 4 upper surface 3mm~10mm of roller mounting plate, extension rod 422 Plate face horizontal abutment is corresponding in strip holding tank 411, the corresponding position of the lower face of steel sliding panel 62 in pallet 6 It is machined with buckle slot 621, pallet 6 can be first by strip 42 in sliding process in the first roller group 5 in pallet permutation component The length that inclination 421 upper surface of pinch plate pushes tension spring simultaneously is further stretched, when inclination 421 upper surface of pinch plate is buckled in In sliding panel 62 in buckle slot 621 after, the length of tension spring can portion rebounds, at this moment set pallet 6 in sliding by buckling combination It changes on component and positions, the double swerve in pallet permutation component of pallet 6 is avoided to cause a deviation from the sphere of action of the first roller group 5, Wherein tilting 421 upper surface of pinch plate and the difference in height of 4 upper surface of roller mounting plate should not be too large, and otherwise pallet 6 can be made to block It is difficult to slide before and after continuing.

Further, the outside plate face of roller mounting plate 4 is provided with guide plate 43, and the idler wheel in the first roller group 5 is located at In the space that guide plate 43 and 4 side plate of roller mounting plate are formed, wherein the distance of the outer side edges of two sides roller mounting plate 4 is less than 6 bottom surface of pallet tenses the distance between the relative inner plate face in lower end transverse slat face 0.5mm in item 63.

The machining center tray that this specific embodiment is related to compared with permutation component in the prior art, has with replacing structure Have following advantage: the pallet permutation component that can be slid laterally on the first sliding rail 13, the second sliding rail 15 or so is carried out in machining In the process, the pallet 6 for being mounted with workpiece to be added can be quickly propelled the fixation position in machining center coaming plate 2 by operator, operation Fast speed improves equipment mobility and processing efficiency；Secondly, pallet permutation component can be made the by replacing positioning component 7 Coordinate on one sliding rail 13 is fixed, and pallet permutation component is avoided to horizontally slip；Furthermore by 4 lateral plates of roller mounting plate Sliding limit between the tension item 63 of 6 base surface of guide plate 43 and pallet avoids the generation of sliding derailment occurring.

Case 2 is embodied:

A kind of machining center tray replacing structure, comprising: bracket 1, machining center coaming plate 2, pallet permutation component；Bracket 1 is located at the side enabling side of machining center coaming plate 2, and pallet permutation component is located on bracket 1, and pallet positioning component is placed in processing In the enclosed space of center coaming plate 2；Bracket 1 includes rack body 11, the support leg 12 for being fixed on 11 bottom face of rack body, spiral shell Gu the first sliding rail 13 of plane on 11 the top crossbearer of rack body, is mounted on the first sliding rail 13 and can be along the first sliding rail 13 First sliding block 14 of sliding；Machining center coaming plate 2 is no upper cover, surrounding encloses the structure of connection, the side of machining center coaming plate 2 Face is machined with pallet feed inlet 21, and the lower end surface of machining center coaming plate 2 is provided with the supporting table 22 of certain altitude, supporting table 22 The positioning seat 23 of the intrinsic fixed tray positioning component of upper surface spiral shell；Pallet permutation component include support plate 3, roller mounting plate 4, First roller group 5,3 screw of support plate are fixed on the upper surface of the first sliding block 14, the symmetrical spiral shell in both sides of 3 width centreline of support plate Gu the lateral surface of roller mounting plate 4 passes through nut and is equipped with the first roller group 5 there are two roller mounting plate 4, wherein nut Rolling surface height is identical on idler wheel of the upper surface lower than the upper surface of roller mounting plate 4 and in the first roller group 5 and is above rolling 4 upper surface 8mm of mounting plate is taken turns, pallet permutation component can pass through horizontally slip change support of first sliding block 14 on the first sliding rail 13 The horizontal position of disk permutation component is directed at it or far from the pallet feed inlet 21 in machining center coaming plate 2；The side of pallet 6 Face, which is tightened up a screw, is equipped with handle 61, is convenient for operator's hand-held.

Further, the outside plate face of roller mounting plate 4 is provided with guide plate 43, and the idler wheel in the first roller group 5 is located at In the space that guide plate 43 and 4 side plate of roller mounting plate are formed, wherein the distance of the outer side edges of two sides roller mounting plate 4 is less than It is 1mm that 6 bottom surface of pallet, which tenses the distance between relative inner plate face in lower end transverse slat face in item 63,.

It is selectable, including 2 groups can independent slide pallet permutation component.

The machining center tray that this specific embodiment is related to compared with permutation component in the prior art, has with replacing structure There is following advantage: being provided with the pallet permutation component that multiple groups can slide laterally on the first sliding rail 13, the second sliding rail 15 or so, During machining carries out, the pallet 6 for being mounted with workpiece to be added can be put into the support of vacant pallet permutation component by operator In the first pulley group 5 of plate 3, Rapid replacement is carried out, improves equipment mobility and processing efficiency；Secondly, passing through displacement positioning group Part 7 can be such that coordinate of the pallet permutation component on the first sliding rail 13 fixes, and pallet permutation component is avoided to horizontally slip；Furthermore it is logical The sliding limit crossed between the tension item 63 of 6 base surface of guide plate 43 and pallet in 4 lateral plates of roller mounting plate avoids sliding The generation of derailment occurring.

Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed, But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to In the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.

Claims

1. A replacement structure for a pallet of a machining center, comprising: a bracket, a machining center enclosure, and a pallet replacement component; the bracket is located on the side of the side opening of the machining center enclosure, the pallet replacement component is located on the bracket, and the pallet positioning component is placed on the machining center. In the enclosed space of the central enclosure; the bracket includes a bracket body, a support foot fixed on the bottom end face of the bracket body, and a first slide rail screwed on the upper plane of the uppermost cross frame of the bracket body, which is installed on the first slide rail and can be a first sliding block sliding along the first sliding rail;

The machining center enclosure is a structure without an upper cover and surrounded by surrounding connections. The side of the machining center enclosure is machined with a tray feed port. The lower end face of the machining center enclosure is provided with a support table with a certain height. The upper end face of the support table The screw has a positioning seat for fixing the pallet positioning assembly; the pallet replacement assembly includes a support plate, a roller mounting plate, and a first roller group. The support plate is screwed on the upper end face of the first slider, and the two sides of the center line of the width of the support plate are symmetrical. Two roller mounting plates, the outer sides of the roller mounting plates are all mounted with a first roller group through a nut, wherein the upper end surface of the nut is lower than the upper end surface of the roller mounting plate, and the rolling surfaces of the rollers in the first roller group have the same height. 3mm to 10mm higher than the top surface of the roller mounting plate, the pallet replacement assembly can change the horizontal position of the pallet replacement assembly through the left and right sliding of the first slider on the first slide rail, so that it is aligned with or away from the pallet in the machining center enclosure Feed port; handles are installed on the side end face of the tray.

2. The replacement structure for machining center pallets according to claim 1, characterized as follows: the pallet replacement assembly also includes a replacement positioning assembly, comprising a dust cover, a positioning plate, and a positioning rod, and the positioning rod vertically passes through the front and rear of the dust cover. The board surface, the upper board surface of the dust cover and the lower board surface of the support board are screwed together, the inner board surface of the rear board surface of the dust cover is fixed with a "ji"-shaped positioning rod fixing board, and the outer board surface of the rear board is fixed with screws. There is a shaft sleeve, the positioning rod passes through the through hole on the front surface of the "ji"-shaped positioning rod fixing plate, the rear surface of the dust cover, and the center hole of the shaft sleeve. The two ends of the spring 76 are in contact with the plate surface of the positioning rod fixing plate and the limit block, respectively. The position of the side plate of the bracket body, which is opposite to the extending direction of the positioning rod, is fixed by screws. For the positioning plate of the circular groove, when the tray replacement assembly slides laterally with the first slider, the positioning rod in the positioning assembly will slide into the semi-circular groove along the inclined surface of one side of the positioning plate, and the tray needs to be replaced. When the component is pushed away from the position of the tray inlet, it is only necessary to manually pull back the positioning rod to make its end free from the semi-circular groove.

3. The replacement structure for a machining center pallet as claimed in claim 1, characterized as follows: the bracket body is located at the bottom of the uppermost horizontal frame and the side plate surface of the horizontal frame is screwed with a second sliding rail, and the rear side of the rear side plate of the dust cover is locked with a second slide rail. The board surface is locked with the second slider screw on the second slide rail.

4. The replacement structure for a machining center pallet according to claim 1, characterized as follows: the second sliding rail is a ball screw, the second sliding block is processed with a screw sleeve structure matching the thread with the ball screw, and the ball screw is The power take-off shaft of the motor is fixedly connected.

5. The replacement structure for the machining center pallet as claimed in claim 1, characterized as follows: the pallet is an aluminum plate, and the position where the bottom surface of the pallet contacts the first roller group is processed with a rectangular groove and the screw in the rectangular groove has a sliding steel material. plate.

6. The replacement structure for a pallet of a machining center as claimed in claim 1, characterized as follows: the end of the roller mounting plate in the pallet replacement assembly is vertically fixed with a reinforcing plate, and the reinforcing plate is machined with a clip accommodating groove, and the roller mounting plate is close to the A rotating shaft is fixed on the side plate surface of the front end through a nut, and the rotating shaft vertically passes through the front end plate surface of the clip. A first fixing hole for the tension spring is machined in the accommodating groove of the clip and the front end side of the extension rod, a second fixing hole for the tension spring is machined on the surface of the support plate, and the two ends of the tension spring are respectively fixed in the first fixing hole of the tension spring. . In the second fixing hole of the tension spring, the tension spring is in a slightly stretched state when the clip is not under stress, and the height of the upper surface of the inclined clip plate of the clip is higher than the upper surface of the roller mounting plate and the lower surface of the extension rod. Correspondingly, in the clamping strip accommodating groove, a corresponding position of the lower plate surface of the steel sliding plate in the tray is processed with a clamping groove.

7. The replacement structure for a machining center pallet as claimed in claim 1, characterized as follows: a guide plate is provided on the outer surface of the roller mounting plate, and the roller in the first roller group is located in the space formed by the guide plate and the side plate of the roller mounting plate wherein, the distance between the outer sides of the roller mounting plates on both sides is smaller than the distance between the opposite inner plate surfaces of the middle and lower end transverse plate surfaces of the tension strip on the lower bottom surface of the tray by 0.5 mm to 1 mm.

8. The replacement structure for a pallet of a machining center according to claim 1, characterized as follows: it comprises 2-3 groups of pallet replacement components that can slide independently.