CN217371444U

CN217371444U - Workpiece limiting device for numerical control machine tool

Info

Publication number: CN217371444U
Application number: CN202220622366.2U
Authority: CN
Inventors: 邓锦辉
Original assignee: Foshan Gaochang Machinery Manufacturing Co ltd
Current assignee: Foshan Gaochang Machinery Manufacturing Co ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-09-06
Anticipated expiration: 2032-03-21

Abstract

The utility model discloses a work piece stop device for digit control machine tool, including the lathe body, the front of lathe body is provided with the slide, there is the door plant in the front of lathe body through slide sliding connection. The utility model adopts the above structure, place the work piece in the upper end of a platform, drive the clamp plate downstream through adjustment mechanism, with the work piece centre gripping between clamp plate and a platform, it removes to drive splint through fixture, make splint play the effect of holding workpiece, restrict the position of work piece side, avoid work piece lateral shifting and influence machining work, thereby through adjustment mechanism, fixture plays the effect spacing to the work piece, can be applicable to not equidimension work piece simultaneously, the produced inconvenience of change stop device has been avoided, according to the size of work piece, height through elevating system adjustment platform, it is corresponding to make the output of work piece and lathe body, then drive the installation piece through the movable block and remove, can carry out the machining work of work piece.

Description

Workpiece limiting device for numerical control machine tool

Technical Field

The utility model belongs to the digit control machine tool field, in particular to work piece stop device for digit control machine tool.

Background

The numerical control machine tool is a digital control machine tool for short, and is an automatic machine tool with a program control system, the control system can logically process a program with control codes or other symbol instructions, decode the program, represent the decoded program by coded numbers, input the coded number into a numerical control device through an information carrier, send various control signals by the numerical control device through operation processing, control the action of the machine tool, and automatically machine parts according to the shape and the size required by a drawing.

Digit control machine tool is adding man-hour to the work piece, need use work piece stop device to carry out the rigidity to the work piece usually, and the work piece stop device of digit control machine tool among the prior art can only carry on spacingly to the work piece of a specification usually to lead to the digit control machine tool to need carry out stop device's change work when processing different products, it is loaded down with trivial details, inconvenient not only to change the process, can influence the operating time of digit control machine tool moreover, thereby reduced the machining efficiency of work piece.

SUMMERY OF THE UTILITY MODEL

To the problem mentioned in the background art, the utility model aims at providing a workpiece limiting device for digit control machine tool to digit control machine tool among the solution prior art need change the problem of limiting device with the fixed not work piece of equidimension.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a work piece stop device for digit control machine tool, includes the lathe body, the front of lathe body is provided with the slide, there is the door plant in the front of lathe body through slide sliding connection, the inside of lathe body slides and practises the aversion movable block of rank, the upper end of movable block is provided with the installation piece, the upper end right side of installation piece is provided with elevating system, there is a platform upper end of installation piece through elevating system sliding connection, the upper end of a platform is provided with the stand, the upper end of stand is provided with adjustment mechanism, the lateral wall of stand has the clamp plate through adjustment mechanism sliding connection, the upper end right side of a platform is provided with the fixed block, the back of fixed block is provided with fixture, the lateral wall of fixed block has splint through fixture sliding connection.

By adopting the technical scheme, when the position of a workpiece is required to be fixed, the workpiece is placed at the upper end of the supporting table, the adjusting mechanism drives the pressing plate to move downwards, the workpiece can be clamped between the pressing plate and the supporting table, the clamping mechanism drives the clamping plate to move, the clamping plate can play a role in clamping the workpiece, the position of the side edge of the workpiece is limited, the workpiece is prevented from moving laterally to influence machining work, the adjusting mechanism and the clamping mechanism play a role in limiting the workpiece, meanwhile, the clamping mechanism can be suitable for workpieces of different sizes, inconvenience caused by replacement of a limiting device is avoided, then the height of the supporting table is adjusted through the lifting mechanism according to the size of the workpiece, the workpiece can correspond to the output end of the machine tool body, the moving block drives the mounting block to move, and machining work of the workpiece can be carried out.

Further, as a preferred technical scheme, elevating system includes rotary trough, first screw rod and power component, the rotary trough is seted up on the upper end right side of installation piece, first screw rod rotates the inside of connecting at the rotary trough, the outer wall of first screw rod is provided with first locating component, power component sets up the inside at the installation piece, power component is connected with first screw rod transmission, the rotary trough is run through to the upper end of first screw rod, the upper end of first screw rod is run through a platform, the outer wall of first screw rod with prop up a platform threaded connection.

Through adopting above-mentioned technical scheme, drive first screw rod through power component and rotate to stabilize first screw rod in the position of rotary trough inside through first locating component, can make first screw rod drive a platform longitudinal movement, thereby make elevating system play the effect of adjustment work piece height through a platform, make the work piece can be corresponding with the output of lathe body, so that carry out processing work.

Further, as preferred technical scheme, first locating component includes first locating piece and first constant head tank, first locating piece sets up the outer wall at first screw rod, the inner wall at the rotary trough is seted up to first constant head tank, first locating piece rotates the inside of connecting at first constant head tank.

Through adopting above-mentioned technical scheme, rotate through first locating piece and connect in the inside of first locating slot, make the position of first screw rod that first locating component can stabilize, avoid first screw rod to appear the position that the condition influences a platform such as slope, longitudinal movement.

Further, as a preferred technical scheme, the power assembly comprises a cavity, a first motor, a first bevel gear and a second bevel gear, the cavity is formed in the mounting block and communicated with the rotary groove, the first motor is arranged in the cavity, the first bevel gear is arranged at the output end of the first motor, the second bevel gear is arranged at the lower end of the first screw rod, and the second bevel gear is meshed with the first bevel gear.

By adopting the technical scheme, the first bevel gear is driven to rotate by the first motor in the cavity, so that the first bevel gear drives the first screw rod to rotate through the second bevel gear, and the power assembly drives the support platform to longitudinally move through the first screw rod.

Further, as preferred technical scheme, the upper end left side of installation piece is provided with the gag lever post, a platform is run through to the upper end of gag lever post, the outer wall and a platform sliding connection of gag lever post, the upper end of gag lever post is provided with the stopper.

Through adopting above-mentioned technical scheme, outer wall through the gag lever post and a platform sliding connection make the gag lever post can stabilize the position of a platform, avoid a platform slope or follow first screw rod and rotate and influence the position of work piece to can avoid a platform to drop through the stopper.

Further, as an optimal technical scheme, the adjusting mechanism comprises a second motor, a second screw rod, a first sliding groove and a first sliding block, the second motor is arranged at the upper end of the stand column, the second screw rod is arranged at the output end of the second motor, the first sliding groove is formed in the side wall of the stand column, the first sliding block is arranged on the side wall of the pressing plate, the first sliding block is connected inside the first sliding groove in a sliding mode, one end of the second screw rod extends into the inside of the first sliding groove, the lower end of the second screw rod penetrates through the first sliding block, the outer wall of the second screw rod is in threaded connection with the first sliding block, and a second positioning assembly is arranged at the lower end of the second screw rod.

By adopting the technical scheme, the second screw rod is driven to rotate by the second motor, and the position of the second screw rod is stabilized by the second positioning assembly, so that the second screw rod drives the first sliding block to slide in the first sliding groove, the adjusting mechanism can drive the pressing plate to longitudinally move, and the pressing plate can stabilize the longitudinal position of the workpiece.

Further, as a preferred technical scheme, the second positioning assembly comprises a second positioning block and a second positioning groove, the second positioning block is arranged at the lower end of the second screw rod, the second positioning groove is formed in the first sliding groove, and the second positioning block is rotatably connected to the second positioning groove.

Through adopting above-mentioned technical scheme, rotate through the second locating piece and connect in the inside of second constant head tank, make the position of second screw rod that second locating component can stabilize, avoid the slope of second screw rod to influence the position of first slider.

Further, as an optimal technical scheme, the clamping mechanism comprises a third motor, a third screw rod, a second sliding groove and a second sliding block, the third motor is arranged at the back of the fixed block, the third screw rod is arranged at the output end of the third motor, the second sliding groove is formed in the side wall of the fixed block, the second sliding block is arranged on the side wall of the clamping plate, the second sliding block is connected to the inside of the second sliding groove in a sliding mode, one end of the third screw rod extends into the inside of the second sliding groove, one end of the third screw rod penetrates through the second sliding block, the outer wall of the third screw rod is in threaded connection with the third sliding block, threads on two sides of the outer wall of the third screw rod are opposite, and one end of the third screw rod is provided with a third positioning assembly.

Through adopting above-mentioned technical scheme, drive the third screw rod through the third motor and rotate to stabilize the position of third screw rod through third locating component, can make the third screw rod drive the second slider and slide in the inside of second spout, thereby make fixture can drive splint removal, make the side contact of splint and work piece, can stabilize the position of work piece side, avoid the work piece position skew to appear and influence the processing work.

Further, as a preferred technical solution, the third positioning assembly includes a third positioning block and a third positioning groove, the third positioning block is disposed at one end of the third screw rod, the third positioning groove is disposed in the second sliding groove, and the third positioning block is rotatably connected in the third positioning groove.

Through adopting above-mentioned technical scheme, rotate through the third locating piece and connect in the inside of third constant head tank, make the position of third screw rod that third locating component can stabilize, avoid the third screw rod to appear the position that the condition influences the second slider such as slope.

Further, as a preferred technical scheme, an installation plate is arranged on the side wall of the installation block, a bolt is rotatably connected to the upper end of the installation plate, the lower end of the bolt penetrates through the installation plate, and the lower end of the bolt is in threaded connection with the moving block.

By adopting the technical scheme, the lower end of the bolt penetrates through the mounting block and is in threaded connection with the moving block, so that the mounting block can be fixed at the upper end of the moving block.

To sum up, the utility model discloses mainly have following beneficial effect:

firstly, when the position of a workpiece needs to be fixed, the workpiece is placed at the upper end of a support, then a regulating mechanism drives a pressing plate to move downwards, so that the workpiece can be clamped between the pressing plate and the support, then a clamping mechanism drives a clamping plate to move, so that the clamping plate can play a role in clamping the workpiece, the position of the side edge of the workpiece is limited, and the workpiece is prevented from moving laterally to influence machining work;

the second, drive first screw rod through power component and rotate to stabilize first screw rod at the position of rotary trough inside through first locating component, can make first screw rod drive a platform longitudinal movement, and can avoid a platform condition such as slope to appear through the gag lever post, avoid a platform to drop through the stopper simultaneously, can make elevating system play the effect of adjustment work piece height through a platform, make the work piece can be corresponding with the output of lathe body, so that carry out the processing work.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic view of the supporting platform structure of the present invention;

FIG. 4 is an enlarged view of the portion A of FIG. 3 according to the present invention;

fig. 5 is a right side view of the support of the present invention.

Reference numerals: 1. the machine tool comprises a machine tool body, 11, a slide way, 12, a door plate, 13, a moving block, 2, an installation block, 21, a limiting rod, 211, a limiting block, 22, an installation plate, 221, a bolt, 3, a lifting mechanism, 31, a rotary groove, 32, a first screw rod, 33, a first positioning component, 331, a first positioning block, 332, a first positioning groove, 34, a power component, 341, a cavity, 342, a first motor, 343, a first bevel gear, 344, a second bevel gear, 4, a support table, 41, a stand column, 42, a fixing block, 5, an adjusting mechanism, 51, a second motor, 52, a second screw rod, 53, a first slide way, 54, a first slide block, 55, a second positioning component, 551, a second positioning block, 552, a second positioning groove, 6, a pressing plate, 7, a clamping mechanism, 71, a third motor, 72, a third screw rod, 73, a second slide way, 74, a second slide block, 75, a third positioning component, 751, a third positioning block, a third positioning component, a third positioning block, a fourth positioning block, a third positioning block 752, a third positioning groove 8 and a clamping plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-5, a workpiece limiting device for a numerical control machine tool according to this embodiment includes a machine tool body 1, a slide 11 is disposed on a front surface of the machine tool body 1, a door plate 12 is slidably connected to the front surface of the machine tool body 1 through the slide 11, a bad friend-practicing moving block 13 is slidably connected to an inside of the machine tool body 1, an installation block 2 is disposed at an upper end of the moving block 13, a lifting mechanism 3 is disposed on a right side of an upper end of the installation block 2, a support 4 is slidably connected to an upper end of the installation block 2 through the lifting mechanism 3, a stand column 41 is disposed at an upper end of the support 4, an adjusting mechanism 5 is disposed at an upper end of the stand column 41, a pressing plate 6 is slidably connected to a side wall of the stand column 41 through the adjusting mechanism 5, a fixing block 42 is disposed on a right side of an upper end of the support 4, a clamping mechanism 7 is disposed at a back surface of the fixing block 42, and a clamping plate 8 is slidably connected to a side wall of the fixing block 42 through the clamping mechanism 7; when the position of a workpiece needs to be fixed, the workpiece is placed at the upper end of the supporting table 4, then the adjusting mechanism 5 drives the pressing plate 6 to move downwards, the workpiece can be clamped between the pressing plate 6 and the supporting table 4, then the clamping mechanism 7 drives the clamping plate 8 to move, the clamping plate 8 can play a role in clamping the workpiece, the position of the side edge of the workpiece is limited, the workpiece is prevented from moving laterally to affect machining work, the adjusting mechanism 5 is used for limiting the workpiece, the clamping mechanism 7 is suitable for workpieces of different sizes, inconvenience caused by replacement of limiting devices is avoided, then the height of the supporting table 4 is adjusted through the lifting mechanism 3 according to the size of the workpiece, the workpiece can correspond to the output end of the machine tool body 1, and then the mounting block 2 is driven to move through the moving block 13, and machining work of the workpiece can be carried out.

Example 2

Referring to fig. 3, on the basis of embodiment 1, in order to achieve the purpose of adjusting the height of the supporting table 4, the present embodiment has an innovative design on the lifting mechanism 3, specifically, the lifting mechanism 3 includes a rotating groove 31, a first screw rod 32 and a power component 34, the rotating groove 31 is disposed on the right side of the upper end of the mounting block 2, the first screw rod 32 is rotatably connected inside the rotating groove 31, a first positioning component 33 is disposed on the outer wall of the first screw rod 32, the power component 34 is disposed inside the mounting block 2, the power component 34 is in transmission connection with the first screw rod 32, the upper end of the first screw rod 32 penetrates through the rotating groove 31, the upper end of the first screw rod 32 penetrates through the supporting table 4, and the outer wall of the first screw rod 32 is in threaded connection with the supporting table 4; the power assembly 34 drives the first screw rod 32 to rotate, and the first positioning assembly 33 stabilizes the position of the first screw rod 32 in the rotary groove 31, so that the first screw rod 32 drives the supporting table 4 to move longitudinally, the lifting mechanism 3 plays a role in adjusting the height of a workpiece through the supporting table 4, and the workpiece can correspond to the output end of the machine tool body 1, so that the processing operation can be conveniently carried out.

Referring to fig. 3, for the purpose of stabilizing the position of the first screw rod 32, the first positioning assembly 33 of the present embodiment includes a first positioning block 331 and a first positioning groove 332, the first positioning block 331 is disposed on the outer wall of the first screw rod 32, the first positioning groove 332 is disposed on the inner wall of the rotating groove 31, and the first positioning block 331 is rotatably connected inside the first positioning groove 332; the first positioning block 331 is rotatably connected inside the first positioning groove 332, so that the first positioning assembly 33 can stabilize the position of the first screw rod 32, and the situation that the first screw rod 32 inclines, moves longitudinally and the like to influence the position of the support table 4 is avoided.

Referring to fig. 3, in order to achieve the purpose of rotating the first screw 32, the power assembly 34 of the present embodiment includes a cavity 341, a first motor 342, a first bevel gear 343, and a second bevel gear 344, the cavity 341 is opened inside the mounting block 2, the cavity 341 is communicated with the rotation slot 31, the first motor 342 is disposed inside the cavity 341, the first bevel gear 343 is disposed at the output end of the first motor 342, the second bevel gear 344 is disposed at the lower end of the first screw 32, and the second bevel gear 344 is engaged with the first bevel gear 343; the first bevel gear 343 is driven by the first motor 342 inside the cavity 341 to rotate, so that the first bevel gear 343 drives the first screw 32 to rotate by the second bevel gear 344, and the power assembly 34 drives the support 4 to move longitudinally by the first screw 32.

Referring to fig. 3, in order to achieve the purpose of stabilizing the position of the supporting table 4, a limiting rod 21 is disposed on the left side of the upper end of the mounting block 2 of the embodiment, the upper end of the limiting rod 21 penetrates through the supporting table 4, the outer wall of the limiting rod 21 is slidably connected with the supporting table 4, and a limiting block 211 is disposed on the upper end of the limiting rod 21; through the outer wall of gag lever post 21 and a 4 sliding connection of platform, make gag lever post 21 can stabilize the position of a 4 platform, avoid a 4 platform slopes or follow first screw rod 32 and rotate and influence the position of work piece to can avoid a 4 platform through stopper 211 and drop.

Example 3

Referring to fig. 3, on the basis of embodiment 2, in order to achieve the purpose of adjusting the height of the pressing plate 6, the present embodiment innovatively designs the adjusting mechanism 5, specifically, the adjusting mechanism 5 includes a second motor 51, a second screw 52, a first sliding chute 53 and a first sliding block 54, the second motor 51 is disposed at the upper end of the upright post 41, the second screw 52 is disposed at the output end of the second motor 51, the first sliding chute 53 is disposed on the side wall of the upright post 41, the first sliding block 54 is disposed on the side wall of the pressing plate 6, the first sliding block 54 is slidably connected inside the first sliding chute 53, one end of the second screw 52 extends into the inside of the first sliding chute 53, the lower end of the second screw 52 penetrates through the first sliding block 54, the outer wall of the second screw 52 is in threaded connection with the first sliding block 54, and the lower end of the second screw 52 is provided with a second positioning assembly 55; the second motor 51 drives the second screw 52 to rotate, and the second positioning assembly 55 stabilizes the position of the second screw 52, so that the second screw 52 drives the first slider 54 to slide in the first sliding slot 53, and the adjusting mechanism 5 drives the pressing plate 6 to move longitudinally, so that the pressing plate 6 stabilizes the longitudinal position of the workpiece.

Referring to fig. 4, for the purpose of stabilizing the position of the second screw 52, the second positioning assembly 55 of the present embodiment includes a second positioning block 551 and a second positioning groove 552, the second positioning block 551 is disposed at the lower end of the second screw 52, the second positioning groove 552 is disposed inside the first sliding slot 53, and the second positioning block 551 is rotatably connected inside the second positioning groove 552; the second positioning block 551 is rotatably connected to the inside of the second positioning groove 552, so that the second positioning assembly 55 can stabilize the position of the second screw 52, and prevent the second screw 52 from tilting and affecting the position of the first slider 54.

Referring to fig. 3 to 5, in order to achieve the purpose of enabling the clamping plate 8 to clamp the workpiece, the clamping mechanism 7 of the present embodiment includes a third motor 71, a third screw 72, a second sliding groove 73 and a second sliding block 74, where the third motor 71 is disposed on the back of the fixed block 42, the third screw 72 is disposed at the output end of the third motor 71, the second sliding groove 73 is disposed on the side wall of the fixed block 42, the second sliding block 74 is disposed on the side wall of the clamping plate 8, the second sliding block 74 is slidably connected inside the second sliding groove 73, one end of the third screw 72 extends into the second sliding groove 73, one end of the third screw 72 penetrates through the second sliding block 74, the outer wall of the third screw 72 is in threaded connection with the third sliding block, the threads on both sides of the outer wall of the third screw 72 are opposite, and one end of the third screw 72 is provided with a third positioning assembly 75; the third motor 71 drives the third screw 72 to rotate, and the third positioning assembly 75 stabilizes the position of the third screw 72, so that the third screw 72 drives the second slider 74 to slide in the second chute 73, and the clamping mechanism 7 can drive the clamping plate 8 to move, so that the clamping plate 8 contacts with the side of the workpiece, the position of the side of the workpiece can be stabilized, and the workpiece position is prevented from being deviated to affect the processing operation.

Referring to fig. 5, for the purpose of stabilizing the position of the third screw 72, the third positioning assembly 75 of the present embodiment includes a third positioning block 751 and a third positioning slot 752, the third positioning block 751 is disposed at one end of the third screw 72, the third positioning slot 752 is disposed inside the second sliding slot 73, and the third positioning block 751 is rotatably connected inside the third positioning slot 752; the third positioning block 751 is rotatably connected to the inside of the third positioning groove 752, so that the third positioning assembly 75 can stabilize the position of the third screw 72, and prevent the third screw 72 from tilting and the like to affect the position of the second slider 74.

Referring to fig. 3, for the purpose of fixing the position of the mounting block 2, the mounting plate 22 is disposed on the side wall of the mounting block 2 of the present embodiment, a bolt 221 is rotatably connected to the upper end of the mounting plate 22, the lower end of the bolt 221 penetrates through the mounting plate 22, and the lower end of the bolt 221 is in threaded connection with the moving block 13; the mounting block 2 can be fixed to the upper end of the moving block 13 by screwing the lower end of the bolt 221 through the mounting block 2 and the moving block 13.

The use principle and the advantages are as follows: the lower end of the bolt 221 penetrates through the mounting block 2 to be in threaded connection with the moving block 13, the mounting block 2 can be fixed at the upper end of the moving block 13, when the position of a workpiece needs to be fixed, the workpiece is placed at the upper end of the supporting table 4, the pressing plate 6 is driven by the adjusting mechanism 5 to move downwards, the second screw 52 is driven by the second motor 51 to rotate and is connected to the inside of the second positioning groove 552 by the second positioning block 551 in a rotating manner, so that the second positioning assembly 55 is stabilized at the position of the second screw 52, that is, the second screw 52 drives the first sliding block 54 to slide in the first sliding groove 53, so that the workpiece is clamped between the pressing plate 6 and the supporting table 4, the clamping plate 8 is driven by the clamping mechanism 7 to move on the side wall of the fixing block 42, the third screw 72 is driven by the third motor 71 to rotate and is connected to the inside of the third positioning groove 752 in a rotating manner by the third positioning block 751, so that the third positioning assembly 75 is stabilized at the position of the third screw 72, the third screw 72 can drive the second slide block 74 to slide in the second sliding groove 73, so that the clamp plate 8 can play a role of clamping the workpiece, thereby limiting the position of the side edge of the workpiece, and avoiding the influence on the processing work caused by the lateral movement of the workpiece, so that the regulating mechanism 5 and the clamping mechanism 7 can play a role of limiting the workpiece, and meanwhile, the clamp plate can be suitable for workpieces with different sizes, thereby avoiding the inconvenience caused by replacing the limiting device, then the height of the support 4 is adjusted through the lifting mechanism 3 according to the size of the workpiece, the first bevel gear 343 can be driven to rotate by the first motor 342 in the cavity 341, so that the first bevel gear 343 can drive the second bevel gear 344 to simultaneously rotate, thereby the power assembly 34 can drive the first screw 32 to rotate in the rotating groove 31 and is rotationally connected in the first positioning groove 332 through the first positioning block 331, so that the first positioning assembly 33 can stabilize the position of the first screw 32, can make first screw rod 32 drive 4 longitudinal movement of a platform, outer wall and a 4 sliding connection of platform through gag lever post 21 simultaneously, make gag lever post 21 can stabilize the position of a 4 platform, avoid a 4 slopes of platform or follow first screw rod 32 and rotate and influence the position of work piece, and can avoid a 4 platform of platform to drop through stopper 211, thereby reach the effect that the adjustment was propped up a 4 height of platform, make the work piece can be corresponding with the output of lathe body 1, then make door plant 12 seal lathe body 1 through slide 11, and drive installation piece 2 through movable block 13 and remove, can carry out the processing work of work piece.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a work piece stop device for digit control machine tool which characterized in that: the machine tool comprises a machine tool body, the front of the machine tool body is provided with a slide, the front of the machine tool body is connected with a door plate through the slide in a sliding manner, the inside of the machine tool body is connected with a moving block in a sliding manner, the upper end of the moving block is provided with an installation block, the upper end right side of the installation block is provided with a lifting mechanism, the upper end of the installation block is connected with a support through the lifting mechanism in a sliding manner, the upper end of the support is provided with a stand column, the upper end of the stand column is provided with an adjusting mechanism, the side wall of the stand column is connected with a pressing plate through the adjusting mechanism in a sliding manner, the upper end right side of the support is provided with a fixed block, the back of the fixed block is provided with a clamping mechanism, and the side wall of the fixed block is connected with a clamping plate through the clamping mechanism in a sliding manner.

2. The workpiece limiting device for the numerical control machine tool as set forth in claim 1, wherein: elevating system includes rotary trough, first screw rod and power component, the rotary trough is seted up on the upper end right side of installation piece, first screw rod rotates the inside of connecting at the rotary trough, the outer wall of first screw rod is provided with first locating component, power component sets up the inside at the installation piece, power component is connected with first screw rod transmission, the rotary trough is run through to the upper end of first screw rod, the upper end of first screw rod is run through a platform, the outer wall of first screw rod with prop up a platform threaded connection.

3. The workpiece limiting device for the numerical control machine tool as set forth in claim 2, wherein: the first positioning component comprises a first positioning block and a first positioning groove, the first positioning block is arranged on the outer wall of the first screw rod, the first positioning groove is formed in the inner wall of the rotary groove, and the first positioning block is rotatably connected inside the first positioning groove.

4. The workpiece limiting device for the numerical control machine tool as set forth in claim 2, wherein: the power assembly comprises a cavity, a first motor, a first bevel gear and a second bevel gear, the cavity is formed in the mounting block, the cavity is communicated with the rotary groove, the first motor is arranged in the cavity, the first bevel gear is arranged at the output end of the first motor, the second bevel gear is arranged at the lower end of the first screw rod, and the second bevel gear is meshed with the first bevel gear.

5. The workpiece limiting device for the numerical control machine tool as set forth in claim 1, wherein: the upper end left side of installation piece is provided with the gag lever post, a platform is run through to the upper end of gag lever post, the outer wall and a platform sliding connection of gag lever post, the upper end of gag lever post is provided with the stopper.

6. The workpiece limiting device for the numerical control machine tool as set forth in claim 1, wherein: adjustment mechanism includes second motor, second screw rod, first spout and first slider, the second motor sets up the upper end at the stand, the second screw rod sets up the output at the second motor, the lateral wall at the stand is seted up to first spout, first slider sets up the lateral wall at the clamp plate, first slider sliding connection is in the inside of first spout, the one end of second screw rod stretches into the inside of first spout, the lower extreme of second screw rod runs through first slider, the outer wall and the first slider threaded connection of second screw rod, the lower extreme of second screw rod is provided with second locating component.

7. The workpiece limiting device for the numerical control machine tool as set forth in claim 6, wherein: the second positioning assembly comprises a second positioning block and a second positioning groove, the second positioning block is arranged at the lower end of the second screw rod, the second positioning groove is formed in the first sliding groove, and the second positioning block is rotatably connected to the second positioning groove.

8. The workpiece limiting device for the numerical control machine tool as set forth in claim 1, wherein: fixture includes third motor, third screw rod, second spout and second slider, the third motor sets up the back at the fixed block, the third screw rod sets up the output at the third motor, the lateral wall at the fixed block is seted up to the second spout, the second slider sets up the lateral wall at splint, second slider sliding connection is in the inside of second spout, the one end of third screw rod stretches into the inside of second spout, the second slider is run through to the one end of third screw rod, the outer wall and the third slider threaded connection of third screw rod, the screw thread of third screw rod outer wall both sides is opposite, the one end of third screw rod is provided with third locating component.

9. The workpiece limiting device for the numerical control machine tool as set forth in claim 8, wherein: the third positioning assembly comprises a third positioning block and a third positioning groove, the third positioning block is arranged at one end of the third screw rod, the third positioning groove is formed in the second sliding groove, and the third positioning block is rotatably connected to the inside of the third positioning groove.

10. The workpiece limiting device for the numerical control machine tool as set forth in claim 1, wherein: the side wall of the mounting block is provided with a mounting plate, the upper end of the mounting plate is rotatably connected with a bolt, the lower end of the bolt penetrates through the mounting plate, and the lower end of the bolt is in threaded connection with the moving block.