CN110948266A

CN110948266A - Automatic clamping fixture

Info

Publication number: CN110948266A
Application number: CN201911190051.4A
Authority: CN
Inventors: 胡火根
Original assignee: Anhui Naike Equipment Technology Co ltd
Current assignee: Anhui Naike Equipment Technology Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-04-03

Abstract

The invention belongs to the technical field of clamps, and particularly relates to an automatic clamping clamp; comprises a clamping block and a fixed block; a first circular groove is formed in the inner wall of the fixed block; a second circular groove is formed in the inner wall of the clamping block; a first annular groove is formed in the inner wall of the clamping block on the side opposite to the second circular groove; a first air bag is fixedly connected in the first annular groove; first through grooves which are uniformly distributed are formed in the inner wall of the clamping block on one side opposite to the first annular groove; a first pressure rod is connected in each first through groove in a sliding manner; a second annular groove is formed in the inner wall of the fixed block on the left side of the second circular groove; a second air bag is fixedly connected in the second annular groove; second through grooves which are uniformly distributed are formed in the inner wall of the fixed block on one side, opposite to the second annular groove; the numerical control milling machine fixture is mainly used for solving the problems that the existing numerical control milling machine fixture can only clamp some workpieces with square shapes, but can not clamp some workpieces with polygonal shapes or irregular shapes.

Description

Automatic clamping fixture

Technical Field

The invention belongs to the technical field of clamps, and particularly relates to an automatic clamping clamp.

Background

The machine is also called a fixture, which is used to fix the object to be processed to make it occupy the correct position for receiving construction or detection. In a broad sense, any device used to quickly, conveniently and safely mount a workpiece at any stage in a process may be referred to as a jig. Such as welding jigs, inspection jigs, assembly jigs, machine tool jigs, and the like. Among them, the machine tool clamp is the most common, and is often referred to as a clamp for short. When a workpiece is machined on a machine tool, the workpiece needs to be assembled (positioned) and firmly clamped (clamped) before machining in order to enable the surface of the workpiece to meet the technical requirements of the size, the geometric shape, the mutual position precision with other surfaces and the like specified in the drawing. The fixture generally comprises a positioning element (for determining the correct position of a workpiece in the fixture), a clamping device, a tool setting guide element (for determining the relative position of the tool and the workpiece or guiding the direction of the tool), an indexing device (for enabling the workpiece to complete the processing of a plurality of stations in one-time installation, including a rotary indexing device and a linear movement indexing device), a connecting element, a fixture body (a fixture base), and the like.

However, most of the clamps on the numerical control milling machine on the market are vices or magnetic chucks, the clamps can only clamp some workpieces with square shapes, and the clamps cannot clamp some workpieces with polygonal shapes or irregular shapes, so that some special clamps are required to be replaced, the machining positions of the workpieces are required to be adjusted after the clamps are replaced, time and labor are wasted, and the workpiece machining efficiency is reduced.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides an automatic clamping fixture which is mainly used for solving the problems that some numerical control milling machines on the existing market can only clamp some workpieces with square shapes, but can not clamp some workpieces with polygonal shapes or irregular shapes, so that some special fixtures need to be replaced, the processing positions of the workpieces need to be adjusted after the clamps are replaced, time and labor are wasted, and the processing efficiency of the workpieces is reduced.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an automatic clamping fixture, which comprises a clamping block and a fixing block; a first circular groove is formed in the inner wall of the fixed block; the clamping block is connected in the first circular groove in a sliding manner; a second circular groove is formed in the inner wall of the clamping block; a first annular groove is formed in the inner wall of the clamping block on the side opposite to the second circular groove; a first air bag is fixedly connected in the first annular groove and designed to surround the first annular groove; the first air bag is communicated with the air pump through a first air pipe; first through grooves which are uniformly distributed are formed in the inner wall of the clamping block on one side opposite to the first annular groove, and the first through grooves are communicated with the second circular grooves; a first pressure rod is connected in each first through groove in a sliding mode and can extend into the second circular groove; the lower surface of the clamping block is fixedly connected with a threaded rod at the position of the central line; a thread groove is formed in the inner wall of the fixed block at the central line of the lower surface of the first circular groove, and the thread groove is communicated with the first circular groove; the threaded rod is arranged in the threaded groove and is meshed and fixed through threads; a sliding groove is formed in the inner wall of the fixed block below the thread groove; the motor is connected in the sliding chute in a sliding mode and is electrically connected with the controller through a lead; the driving shaft of the motor is fixedly connected with the lower surface of the threaded rod through a threaded groove; the lower surface of the first circular groove is fixedly connected with elastic plates which are uniformly arranged, and the elastic plates are designed to surround the threaded rod; the top end of the elastic plate is fixedly connected with a pressing plate, and the pressing plate is attached to the bottom of the clamping block; a second annular groove is formed in the inner wall of the fixed block on the left side of the second circular groove; a second air bag is fixedly connected in the second annular groove and designed to surround the second annular groove; the second air bag is communicated with the air pump through a second air pipe; second through grooves which are uniformly distributed are formed in the inner wall of the fixed block on one side, opposite to the second annular groove, of the second annular groove, and the second through grooves are uniformly communicated with the first circular grooves; a second pressure rod is connected in each second through groove in a sliding mode and can extend into the first circular groove; when the clamp works, when the clamp clamps a workpiece, the workpiece is firstly placed into the second circular groove, the air pump switch is simultaneously started, the controller controls the air pump to inflate the first air bag through the first air pipe, the first air bag expands towards two sides under the extrusion of air, the first air bag extrudes the first pressure rod at the same time, the first pressure rods which are uniformly arranged all slide towards the second circular groove to form a barrel so as to start extruding the workpiece, the workpiece can be clamped automatically according to the appearance of the workpiece in the process that the first pressure rods which are uniformly arranged extrude the workpiece, in the process, the workpieces with different shapes can be clamped through the mutual extrusion and matching of the first pressure rods, so that the problem that the clamp needs to be frequently replaced is avoided, meanwhile, the workpiece can be clamped more firmly, the workpiece is prevented from being loosened in the processing process, the processing size of the workpiece is influenced, and after the clamping blocks clamp the workpiece, the controller controls the motor to rotate, in the process of rotating the motor, the driving shaft of the motor is fixedly connected with the threaded rod, so that the threaded rod is driven to rotate, the threaded rod drives the clamping block to rotate downwards, the motor rotates and slides downwards in the sliding groove, in the process, the clamping block drives the workpiece to rotate and move downwards, the position of the workpiece during machining can be adjusted when the workpiece moves, the position of the workpiece during machining is prevented from being manually adjusted after the workpiece is clamped, time and labor are wasted, the machining efficiency of the workpiece is reduced, when the clamping block rotates and moves downwards, the pressing plate is pressed downwards, the pressing plate presses the elastic plate downwards, in the process of downward compression of the elastic plate, the extrusion force of the elastic plate is increased, so that the clamping block is better clamped, in the process, the clamping block is prevented from loosening caused by no clamping, the workpiece is shaken in the machining process, and the machining precision of the workpiece is influenced, when the processing position is adjusted to the workpiece and the motor stops rotating, the controller controls the air pump to inflate into the second air bag through the second air pipe at the moment, the second air bag which receives the air pressure extrudes the second pressure rod, the second pressure rod slides into the first circular groove and extrudes the clamping block, the clamping block can be further clamped in the process, the clamping block is prevented from shaking, the processing precision of the workpiece is influenced, and the clamping block and the fixed block are connected through thread engagement, so that the proper clamping block can be replaced according to the size of the workpiece.

Preferably, each of the first pressure lever and the second pressure lever is a telescopic lever; the during operation, because first depression bar is the telescopic link design, when needs process less work piece, can extrude first gasbag through gas, first gasbag can extrude the slide bar in the first depression bar, thereby realize the less work piece of first depression bar chucking, at this in-process, can prevent because of the work piece is less, thereby lead to the unable chucking work piece of clamp splice, it wastes time and energy still to change anchor clamps simultaneously, because the second depression bar is the telescopic link design, when changing less clamp splice, the slide bar in the second depression bar is extruded to the second gasbag, thereby the less clamp splice of chucking, at this in-process, can prevent that the clamp splice from taking place to rock when processing the work piece, thereby influence the size precision of work piece.

Preferably, the rod head of each first compression rod and the rod head of each second compression rod are fixedly connected with a rubber layer; the during operation, when first depression bar extrusion work piece, because first depression bar pole head department has linked firmly the rubber layer, thereby can increase the frictional force of first depression bar to the work piece, thereby with the tighter of work piece card, can also prevent that first depression bar from causing the damage to the workpiece surface when the extrusion work piece, influence work piece precision size, when second depression bar extrusion clamp splice, because second depression bar pole head department has also linked firmly the rubber layer, thereby can increase the extrusion force of second extrusion pole to the briquetting, can also prevent second briquetting fish tail clamp splice.

Preferably, lubricating oil is contained in the cavity of the first annular groove on one side of the first air bag, which is far away from the second circular groove; liquid leakage grooves which are uniformly distributed are formed in the corner of the groove bottom on the opposite side of the first annular groove; the lower surface of the first circular groove is provided with liquid inlet grooves which are uniformly distributed, and the number of the liquid inlet grooves is two; square grooves which are uniformly distributed are formed in the inner wall of the fixed block below the liquid inlet groove, and the square grooves correspond to the liquid inlet grooves one to one; a supercharger is fixedly arranged in each of the two square grooves; the two square grooves are communicated with the first annular groove through liquid pipes; the during operation, when first gasbag received gaseous extrusion force and begins to expand, because the weeping groove of evenly arranging is seted up to first ring channel tank bottom corner, lubricating oil in the first ring channel flows into on the inner wall of first circular slot through the weeping groove of evenly arranging, when the clamp splice is rotatory removal downwards, can improve the sliding capacity of clamp splice to first circular slot surface, can prevent that the clamp splice from blocking in first circular slot when rotatory removal downwards, thereby make the threaded rod take place to damage the normal operating capability who influences anchor clamps, when lubricating oil flows into first circular slot bottom, can flow into the square inslot through the feed liquor groove, pass through the liquid pipe with lubricating oil through the booster and impress in first ring channel, with this recycling, in this process, not only can lubricate the clamp splice and can also save lubricating oil.

Preferably, the inner wall of the pressure plate is provided with strip-shaped grooves which are uniformly distributed; the lower surface of each strip-shaped groove is provided with through holes which are uniformly distributed in the inner wall of the pressing plate, and the through holes are communicated with the first circular groove; the during operation, when the lubricating oil in the first ring channel flows through the clamp plate, because the bar groove of evenly arranging has been seted up to the clamp plate inner wall, and bar groove lower surface sets up the through-hole of evenly arranging, lubricating oil can flow in the bar inslot, then flow to on elastic plate and the threaded rod from the through-hole of evenly arranging again, in this process, can lubricate and cool down the processing to the elastic plate, thereby prevent that the elastic plate from receiving pressure and producing deformation, make the elastic plate take place to damage, can also lubricate the processing to the screw thread on the threaded rod simultaneously, thereby make the rotation between threaded rod and the thread groove more smooth and easy, can also prevent the resistance between the screw thread increase corrosion screw thread.

Preferably, the first air bag is provided with air holes which are uniformly distributed on one side close to the second circular groove; each first pressure lever is provided with a conical groove, and the conical grooves correspond to the air holes one by one; each conical groove penetrates through the rubber layer and is communicated with the second circular groove; during operation, because the bell jar one-to-one that sets up in first gasbag gas pocket and the first depression bar, when the air pump lasts to aerifing first gasbag, gas in the first gasbag blows in the bell jar through the gas pocket, on blowing in the work piece of chucking in the second circular slot, at this in-process, can blow off the iron fillings that produce on the work piece after processing to prevent that iron fillings from remaining on work piece and first depression bar, influence the process of follow-up clamping work piece.

The invention has the following beneficial effects:

1. according to the invention, by arranging the telescopic rod, the first air bag can be extruded by air when a smaller workpiece needs to be processed due to the design of the first pressure rod as the telescopic rod, and the sliding rod in the first pressure rod can be extruded by the first air bag, so that the smaller workpiece can be clamped by the first pressure rod.

2. According to the invention, by arranging the pressing plate, when the lubricating oil in the first annular groove flows through the pressing plate, the strip-shaped grooves which are uniformly distributed are formed in the inner wall of the pressing plate, and the through holes which are uniformly distributed are formed in the lower surfaces of the strip-shaped grooves, the lubricating oil can flow into the strip-shaped grooves and then flow onto the elastic plate and the threaded rod from the through holes which are uniformly distributed, so that the elastic plate can be lubricated and cooled in the process, the elastic plate is prevented from being deformed due to pressure, the elastic plate is prevented from being damaged, meanwhile, the threads on the threaded rod can be lubricated, the rotation between the threaded rod and the thread grooves is smoother, and the threads can be prevented from being corroded to increase the resistance between the.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a front view of the present invention;

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

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is an enlarged view of a portion of FIG. 2 at B;

FIG. 5 is an enlarged view of a portion of FIG. 2 at C;

FIG. 6 is an enlarged view of a portion of FIG. 3 at D;

in the figure: the air pump comprises a clamping block 1, a second circular groove 11, a first annular groove 12, a first air bag 13, an air hole 14, a first air pipe 15, an air pump 16, a first through groove 17, a first pressure rod 18, a conical groove 19, a rubber layer 111, a threaded rod 121, a pressure plate 131, a strip-shaped groove 141, a through hole 151, a liquid leakage groove 161, an elastic plate 171, a fixed block 2, a first circular groove 21, a threaded groove 22, a sliding groove 23, a motor 24, a liquid inlet groove 25, a square groove 26, a supercharger 27, a liquid pipe 28, a second annular groove 29, a second air bag 211, a second air pipe 221, a second through groove 231 and a second pressure rod 241.

Detailed Description

An automatic clamping jig according to an embodiment of the present invention will be described below with reference to fig. 1 to 6.

As shown in fig. 1-6, the automatic clamping fixture of the invention comprises a clamping block 1 and a fixing block 2; a first circular groove 21 is formed in the inner wall of the fixed block 2; the clamping block 1 is connected in the first circular groove 21 in a sliding manner; a second circular groove 11 is formed in the inner wall of the clamping block 1; a first annular groove 12 is formed in the inner wall of the clamping block 1 on the side opposite to the second circular groove 11; a first air bag 13 is fixedly connected in the first annular groove 12, and the first air bag 13 is designed to surround the first annular groove 12; the first air bag 13 is communicated with an air pump 16 through a first air pipe 15; first through grooves 17 which are uniformly distributed are formed in the inner wall of the clamping block 1 on the opposite side of the first annular groove 12, and the first through grooves 17 are communicated with the second circular grooves 11; a first pressure lever 18 is connected in each first through groove 17 in a sliding manner, and the first pressure levers 18 can extend into the second circular grooves 11; the lower surface of the clamping block 1 is fixedly connected with a threaded rod 121 at the central line position; a thread groove 22 is formed in the inner wall of the fixed block 2 at the central line position of the lower surface of the first circular groove 21, and the thread groove 22 is communicated with the first circular groove 21; the threaded rod 121 is arranged in the threaded groove 22 and is fixed through threaded engagement; a sliding groove 23 is formed in the inner wall of the fixed block 2 below the thread groove 22; a motor 24 is connected in the sliding groove 23 in a sliding manner, and the motor 24 is electrically connected with the controller through a lead; the driving shaft of the motor 24 is fixedly connected with the lower surface of the threaded rod 121 through the threaded groove 22; the lower surface of the first circular groove 21 is fixedly connected with elastic plates 171 which are uniformly arranged, and the elastic plates 171 are designed to surround the threaded rod 121; the top end of the elastic plate 171 is fixedly connected with a pressing plate 131, and the pressing plate 131 is attached to the bottom of the clamping block 1; a second annular groove 29 is formed in the inner wall of the fixed block 2 at the left side of the second circular groove 11; a second air bag 211 is fixedly connected in the second annular groove 29, and the second air bag 211 is designed to surround the second annular groove 29; the second air bag 211 is communicated with the air pump 16 through a second air pipe 221; second through grooves 231 which are uniformly distributed are formed in the inner wall of the fixed block 2 on the opposite side of the second annular groove 29, and the second through grooves 231 are communicated with the first circular grooves 21 uniformly; a second pressure lever 241 is slidably connected in each second through groove 231, and the second pressure levers 241 can extend into the second circular grooves 11; when the clamp works, when the clamp clamps a workpiece, the workpiece is firstly placed into the second circular groove 11, the switch of the air pump 16 is started, at the same time, the controller controls the air pump 16 to inflate the first air bag 13 through the first air pipe 15, the first air bag 13 expands towards two sides under the extrusion of air, the first air bag 13 extrudes the first pressure rod 18, the first pressure rod 18 which is uniformly arranged slides towards the second circular groove 11 to start extruding the workpiece, the workpiece can be automatically clamped according to the appearance of the workpiece in the process that the workpiece is extruded by the first pressure rod 18 which is uniformly arranged, in the process, the workpieces with different shapes can be clamped through the mutual extrusion and matching of the first pressure rod 18, so that the problem that the clamp needs to be frequently replaced is avoided, meanwhile, the workpiece can be clamped more firmly, the workpiece is prevented from being loosened in the processing process, the processing size of the workpiece is influenced, after the clamping block 1 clamps the workpiece, at this time, the controller controls the motor 24 to rotate, in the process of the rotation of the motor 24, as the driving shaft of the motor 24 is fixedly connected with the threaded rod 121, the threaded rod 121 is driven to rotate, the threaded rod 121 drives the clamping block 1 to rotate downwards, and the motor 24 rotates and slides downwards in the chute 23, in the process, as the clamping block 1 drives the workpiece to rotate and move downwards, the position of the workpiece during processing can be adjusted when the workpiece moves, so that the position of the workpiece to be processed can be prevented from being manually adjusted after being clamped, time and labor are wasted, the processing efficiency of the workpiece is reduced, when the clamping block 1 rotates and moves downwards, the pressing plate 131 is pressed downwards, the elastic plate 171 is pressed downwards by the pressing plate 131, in the process of the downward compression of the elastic plate 171, the extrusion force of the elastic plate 171 is increased, so that the clamping block 1 is better clamped, and in the process, the clamping block 1 can be prevented from being loosened due to no clamping, the workpiece is shaken in the processing process, so that the processing precision of the workpiece is influenced, when the processing position of the workpiece is adjusted and the motor 24 stops rotating, the controller controls the air pump 16 to inflate the second air bag 211 through the second air pipe 221 at the moment, the second air bag 211 under the air pressure extrudes the second pressure rod 241, the second pressure rod 241 slides in the first circular groove 21 and extrudes the clamping block 1, the clamping block 1 can be further clamped in the process, the clamping block 1 is prevented from shaking, so that the processing precision of the workpiece is influenced, and the clamping block 1 and the fixed block 2 are connected through threaded engagement, so that the clamping block 1 can be replaced properly according to the size of the workpiece.

As an embodiment of the present invention, each of the first pressure lever 18 and the second pressure lever 241 is a telescopic rod; during operation, because first depression bar 18 is the telescopic link design, when needs process less work piece, can extrude first gasbag 13 through gas, first gasbag 13 can extrude the slide bar in first depression bar 18, thereby realize the less work piece of first depression bar 18 chucking, in this process, can prevent because of the work piece is less, thereby lead to the unable chucking work piece of clamp splice 1, still need to change anchor clamps simultaneously and waste time and energy, because second depression bar 241 is the telescopic link design, when changing less clamp splice 1, second gasbag 211 extrudes the slide bar in the second depression bar 241, thereby the less clamp splice 1 of chucking, in this process, can prevent that clamp splice 1 from taking place to rock when processing the work piece, thereby influence the size precision of work piece.

As an embodiment of the present invention, a rubber layer 111 is fixedly connected to the rod head of each of the first pressure rod 18 and the second pressure rod 241; during operation, when first depression bar 18 extrudees the work piece, because first depression bar 18 pole head department has linked firmly rubber layer 111, thereby can increase the frictional force of first depression bar 18 to the work piece, thereby with the tighter of work piece card, can also prevent that first depression bar 18 from when the extrusion work piece, cause the damage to the workpiece surface, influence work piece precision size, when second depression bar 241 extrudees clamp splice 1, because second depression bar 241 pole head department has also linked firmly rubber layer 111, thereby can increase the extrusion force of second extrusion bar to the briquetting, can also prevent second briquetting fish tail clamp splice 1.

As an embodiment of the present invention, the side of the first air bag 13 away from the second circular groove 11 is filled with lubricating oil in the cavity of the first annular groove 12; the groove bottom corner of the first annular groove 12 at the opposite side is provided with liquid leakage grooves 161 which are uniformly distributed; the lower surface of the first circular groove 21 is provided with liquid inlet grooves 25 which are uniformly distributed, and the number of the liquid inlet grooves 25 is two; square grooves 26 which are uniformly distributed are formed in the inner wall of the fixed block 2 below the liquid inlet groove 25, and the square grooves 26 correspond to the liquid inlet grooves 25 one by one; a supercharger 27 is fixedly arranged in each of the two square grooves 26; both square grooves 26 are communicated with the first annular groove 12 through liquid pipes 28; when the air compressor works, when the first air bag 13 begins to expand under the action of the air extrusion force, the liquid leakage grooves 161 which are uniformly arranged are formed in the corners of the bottom of the first circular groove 12, lubricating oil in the first circular groove 12 flows into the inner wall of the first circular groove 21 through the liquid leakage grooves 161 which are uniformly arranged, when the clamping block 1 rotates downwards, the sliding capacity of the clamping block 1 on the surface of the first circular groove 21 can be improved, the clamping block 1 can be prevented from being clamped in the first circular groove 21 when rotating downwards, the threaded rod 121 is damaged to affect the normal working capacity of the clamp, when the lubricating oil flows into the bottom of the first circular groove 21, the lubricating oil can flow into the square groove 26 through the liquid inlet groove 25, the lubricating oil is pressed into the first circular groove 12 through the liquid pipe 28 through the supercharger 27, the lubricating oil can be recycled, and the lubricating oil can be saved by lubricating the clamping block 1.

As an embodiment of the present invention, the inner wall of the pressing plate 131 is provided with uniformly arranged strip-shaped grooves 141; the lower surface of each strip-shaped groove 141 is provided with through holes 151 uniformly distributed in the inner wall of the pressing plate 131, and the through holes 151 are communicated with the first circular groove 21; in operation, when the lubricating oil in first ring channel 12 flows through clamp plate 131, because set up the bar groove 141 of evenly arranging in the clamp plate 131 inner wall, and bar groove 141 lower surface sets up the through-hole 151 of evenly arranging, lubricating oil can flow in bar groove 141, then flow to elastic plate 171 and threaded rod 121 in the through-hole 151 of evenly arranging again, in this process, can lubricate and cool down the processing to elastic plate 171, thereby prevent that elastic plate 171 from receiving pressure and producing deformation, make elastic plate 171 take place to damage, can also lubricate the screw thread on the threaded rod 121 simultaneously, thereby make the rotation between threaded rod 121 and the thread groove 22 more smooth and easy, can also prevent the resistance between the thread corrosion increase screw thread.

As an embodiment of the present invention, the first air bag 13 has air holes 14 uniformly arranged on one side close to the second circular groove 11; each first pressure lever 18 is provided with a tapered groove 19, and the tapered grooves 19 correspond to the air holes 14 one by one; each conical groove 19 is communicated with the second circular groove 11 through the rubber layer 111; during operation, because the tapered slot 19 one-to-one that sets up in first gasbag 13 gas pocket 14 and the first depression bar 18, when air pump 16 lasted to aerify first gasbag 13, gas in the first gasbag 13 blew in tapered slot 19 through gas pocket 14 in, on blowing in the work piece of chucking in second circular slot 11, at this in-process, can blow out the iron fillings that produce on the work piece after processing to prevent that iron fillings from remaining on work piece and first depression bar 18, influence the process of follow-up clamping work piece.

The specific working process is as follows:

when the clamp works, when the clamp clamps a workpiece, the workpiece is firstly placed into the second circular groove 11, the switch of the air pump 16 is started, the controller controls the air pump 16 to inflate the first air bag 13 through the first air pipe 15, the first air bag 13 expands towards two sides under the extrusion of air, the first air bag 13 extrudes the first pressure lever 18, the first pressure lever 18 which is uniformly arranged slides towards the second circular groove 11 to start extruding the workpiece, the workpiece can be automatically clamped according to the appearance of the workpiece in the process that the workpiece is extruded by the first pressure lever 18 which is uniformly arranged, the controller controls the motor 24 to rotate when the clamping block 1 clamps the workpiece, in the process that the motor 24 rotates, as the driving shaft of the motor 24 is fixedly connected with the threaded rod 121, the threaded rod 121 is driven to rotate, the clamping block 1 is driven to rotate downwards by the threaded rod 121, and the motor 24 rotates and slides downwards in the sliding groove 23, in the process, the clamping block 1 drives the workpiece to rotate and move downwards, the position of the workpiece during machining can be adjusted when the workpiece moves, when the clamping block 1 rotates downwards, the pressing plate 131 is pressed downwards, meanwhile, the pressing plate 131 presses the elastic plate 171 downwards, in the process that the elastic plate 171 is compressed downwards, the pressing force of the elastic plate 171 is increased, the clamping block 1 is better clamped, when the machining position of the workpiece is adjusted and the motor 24 stops rotating, the controller controls the air pump 16 to inflate the second air bag 211 through the second air pipe 221 at the moment, the second air bag 211 under the air pressure presses the second pressing rod 241, and the second pressing rod 241 slides into the first circular groove 21 and presses the clamping block 1, so that the work of clamping the workpiece is completed.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an automatic clamping anchor clamps which characterized in that: comprises a clamping block (1) and a fixed block (2); a first circular groove (21) is formed in the inner wall of the fixing block (2); the clamping block (1) is connected in the first circular groove (21) in a sliding manner; a second circular groove (11) is formed in the inner wall of the clamping block (1); a first annular groove (12) is formed in the inner wall of the clamping block (1) on the side opposite to the second circular groove (11); a first air bag (13) is fixedly connected in the first annular groove (12), and the first air bag (13) is designed to surround the first annular groove (12); the first air bag (13) is communicated with an air pump (16) through a first air pipe (15); first through grooves (17) which are uniformly distributed are formed in the inner wall of the clamping block (1) on the opposite side of the first annular groove (12), and the first through grooves (17) are communicated with the second circular groove (11); a first pressure lever (18) is connected in each first through groove (17) in a sliding manner, and the first pressure levers (18) can extend into the second circular grooves (11); the lower surface of the clamping block (1) is fixedly connected with a threaded rod (121) at the central line position; a thread groove (22) is formed in the inner wall of the fixed block (2) at the central line position of the lower surface of the first circular groove (21), and the thread groove (22) is communicated with the first circular groove (21); the threaded rod (121) is arranged in the threaded groove (22) and is fixed through threaded engagement; a sliding groove (23) is arranged in the inner wall of the fixed block (2) below the thread groove (22); a motor (24) is connected in the sliding groove (23) in a sliding manner, and the motor (24) is electrically connected with the controller through a lead; the driving shaft of the motor (24) is fixedly connected with the lower surface of the threaded rod (121) through a threaded groove (22); the lower surface of the first circular groove (21) is fixedly connected with elastic plates (171) which are uniformly arranged, and the elastic plates (171) are designed to surround the threaded rod (121); the top end of the elastic plate (171) is fixedly connected with a pressing plate (131), and the pressing plate (131) is attached to the bottom of the clamping block (1); a second annular groove (29) is formed in the inner wall of the fixed block (2) at the left side of the second circular groove (11); a second air bag (211) is fixedly connected in the second annular groove (29), and the second air bag (211) is designed to surround the second annular groove (29); the second air bag (211) is communicated with the air pump (16) through a second air pipe (221); second through grooves (231) which are uniformly distributed are formed in the inner wall of the fixed block (2) on the opposite side of the second annular groove (29), and the second through grooves (231) are uniformly communicated with the first circular grooves (21); every all sliding connection has second depression bar (241) in the second logical groove (231), and in second depression bar (241) all can stretch into first circular slot (21).

2. The automatic clamping fixture as claimed in claim 1, wherein: each first pressure lever (18) and each second pressure lever (241) are both telescopic lever designs.

3. The automatic clamping fixture as claimed in claim 2, wherein: the rubber layer (111) is fixedly connected to the rod head of each first pressure rod (18) and the rod head of each second pressure rod (241).

4. The automatic clamping fixture as claimed in claim 1, wherein: lubricating oil is contained in the cavity of the first annular groove (12) on one side of the first air bag (13) far away from the second circular groove (11); the corners of the bottom of the groove on the opposite side of the first annular groove (12) are provided with liquid leakage grooves (161) which are uniformly distributed; the lower surface of the first circular groove (21) is provided with liquid inlet grooves (25) which are uniformly distributed, and the number of the liquid inlet grooves (25) is two; square grooves (26) which are uniformly distributed are formed in the inner wall of the fixed block (2) below the liquid inlet groove (25), and the square grooves (26) correspond to the liquid inlet grooves (25) one by one; a supercharger (27) is fixedly arranged in each of the two square grooves (26); both square grooves (26) are communicated with the first annular groove (12) through liquid pipes (28).

5. The automatic clamping fixture as claimed in claim 1, wherein: the inner wall of the pressure plate (131) is provided with strip-shaped grooves (141) which are uniformly distributed; the lower surface of each strip-shaped groove (141) is provided with through holes (151) which are uniformly distributed in the inner wall of the pressing plate (131), and the through holes (151) are communicated with the first circular groove (21).

6. The automatic clamping fixture as claimed in claim 2, wherein: one side of the first air bag (13) close to the second circular groove (11) is provided with air holes (14) which are uniformly distributed; each first pressure lever (18) is provided with a tapered groove (19), and the tapered grooves (19) correspond to the air holes (14) one by one; each conical groove (19) is communicated with the second circular groove (11) through the rubber layer (111).