146results about How to "Prevent loosening and falling" patented technology

The invention discloses a novel mobile storage device which comprises a base body fixedly arranged in a computer, and a memorizer in inserted fixation fit connection with the base body. An inserted fixation cavity is formed in the left side face of the base body. The right side of the inserted fixation cavity is communicated with first slide grooves. A slide cavity is communicated between the upper first slide groove and the lower first slide groove. An iron core is fixedly arranged on the inner left wall of the slide cavity and provided with an electric wire. A slide plate is in sliding fit connection in the slide cavity. The upper end and the lower end of the slide plate extend into the first slide grooves respectively. The novel mobile storage device is simple in structure and convenient to use; by locking the memorizer, it is avoided that the working continuity and stability of the memorizer are affected by looseness and disengagement; meanwhile, the inserted fixation cavity can beclosed, the conductivity process is independently controlled, and security is ensured.

The invention discloses a garden greening tree planting device convenient to move and capable of increasing survival rate, and belongs to the field of tree planting. The garden greening tree plantingdevice convenient to move and capable of increasing survival rate comprises a frame plate; the bottom inner wall and top inner wall of the frame plate are respectively connected with a first fixing plate and a second fixing plate; a first threaded rod is connected between the first fixing plate and the second fixing plate; a first sliding plate and a second sliding plate are connected to the outerwall of the first threaded rod; a clamping plate is slidably connected inside the first sliding plate; an arc groove is formed in each supporting plate; and a convex block is also slidably connectedonto each supporting plate; a holding frame is slidably connected onto the first fixing plate; and rollers are connected to the bottoms of the frame plate and the first fixing plate. According to theinvention, trees can be conveniently transported, the labor intensity is low, and the working efficiency is improved; the roots of plantlets cannot be damaged in the transportation process of the trees, and the survival rate of the plantlets is increased.

The invention discloses a double-tapered-angle magnetic liquid shock absorber on the basis of a first-order buoyancy principle, and belongs to the field of vibration of mechanical engineering. The problem that due to multiple structural problems, an existing magnetic liquid damping shock absorber cannot be applied to the engineering practice is successfully solved. The double-tapered-angle magnetic liquid shock absorber comprises a shell (1), a first permanent magnet (2), an upper end cover (3), magnetic liquid (4), a mass block (5), a second permanent magnet (6) and a lower end cover (7). When the exterior vibrates, the mass block (5) moves in a cavity, and the magnetic liquid (4) flows in a gap between the inner hole wall of the shell (1) and the mass block (5), so that the energy is absorbed, and the aim of reducing the vibration is achieved; first-order buoyancy formed by the first permanent magnet (2) and the second permanent magnet (6) in the magnetic liquid enables a frequency difference to be formed between the mass block (5) and the shell (1); and the vibration reduction efficiency is maximized.

The invention discloses a boarded door paint spraying device which comprises a paint spraying machine body, wherein a cavity is formed in the paint spraying machine body; and a downward pressing clamping device is arranged in the cavity and comprises a support block at the right end of the cavity. According to the boarded door paint spraying device, a paint spraying block uniformly lifts to ensureuniform paint spraying; at the same time, an upper oblique plane and a lower oblique plane are matched to realize power switching among a fixed bevel gear, a movable bevel gear and a central bevel gear to ensure that a clamped door is fast clamped, so that the situation that a door plank is not clamped by a door clamping block due to manual misoperation, a rotary block rotates to cause the door plank to fall, and the door plank material is damaged is effectively prevented; and a paint stirring shaft and a paint stirring rod are arranged to stir paint, so that the paint spraying effect is better, and the paint spraying efficiency is higher.

The invention discloses a counterweight hammer and a hoisting device and belongs to the technical field of limit switch application in hoisting devices. The counterweight hammer comprises a counterweight hammer body 1 and an inserting block 2, wherein the inserting block 2 and the counterweight hammer body 1 are connected into a whole in an inserting mode through an inserting port 11 of the counterweight hammer body 1, the inserting port of the counterweight hammer body 1 is provided with a limiting member, the limiting member is used for preventing the inserting block 2 from falling out of the upper portion of the counterweight hammer body 1, a first hook member 21 is arranged at the top of the inserting port 2, and a second hook member 12 is arranged at a position of the counterweight hammer body 1, which is symmetric with the first hook member 21 relative to the gravity center of a height limiter counterweight hammer. The technical scheme has the advantages that the counterweight hammer body and the inserting block are formed in an inserting mode, and the disassembly is convenient and rapid; the inserting block is prevented from loosening and falling through a structure that the width of a spring hook is larger than that of the upper portion of the inserting port; the counterweight hammer body is prevented from loosening and falling from a working position through a hoisting lug of the spring hook, which is hung on the counterweight hammer body, and the structure is safe and reliable; and the whole counterweight hammer is a casting part, requirements for the surface are low and the cost is low.

The invention provides a switching device for adjusting a lamp installation angle, a lighting device and another switching device. The switching device for adjusting the lamp installation angle comprises a fixed part and a connecting main body which are rotatably connected, wherein the fixed part is provided with first wheel teeth and a first gear part, the first wheel teeth and gear teeth on the first gear part form a first gear plate with continuous gear teeth, the connecting main body is provided with second wheel teeth and a second gear part, the second wheel teeth and gear teeth on the second gear part form a second gear plate with continuous gear teeth, the first gear plate can be meshed with the second gear plate, the first and second wheel teeth are formed by pressure casting of aluminum alloy, and the first and second gear parts are made of high-hardness materials. Compared with the prior art, the switching device for adjusting the lamp installation angle has the advantages that when the switching device works, the high-hardness materials are meshed with aluminum alloy, or the high-hardness materials are meshed with each other, so that the first and second gear plates are not easy to abrade, the service life can be prolonged, higher strength can be borne, and the application range can be enlarged.

The invention discloses a mechanical clamping device for lifting and supporting an oil casing. The mechanical clamping device for lifting and supporting the oil casing comprises a mounting plate, a mounting cover and a clamping device; a mounting groove is formed in the mounting plate; an adjusting rod is mounted on the internal side of the mounting groove; a servo motor is fixed above the mounting plate; a first driving shaft is connected to the servo motor; a second driving shaft is positioned on the left side of a vertical plate; adjusting gears are mounted on the second driving shaft and the first driving shaft; a connecting rod is positioned on the internal side of a limiting cover; a limiting hole is formed in the connecting rod; a connecting shaft is mounted on a clamping device; and the clamping device is connected with a rotating disc through the connecting shaft. According to the mechanical clamping device for lifting and supporting the oil casing, the mechanical clamping device is convenient to adjust according to the lengths and diameters of the oil casings, the adaption ability of the mechanical clamping device to the oil casings with different models is improved, themechanical clamping device is beneficial for improving the clamping stability of the oil casings with the different models, and a situation that the oil casings are loosened and fall off in the machining process can be avoided.

The invention relates to a support pipe conveying device, in particular to a convenient support pipe conveying device for a construction site, and solves the problem to provide the convenient supportpipe conveying device for the construction site where support pipes can be conveniently conveyed. In order to solve the problem, the convenient support pipe conveying device for the construction sitecomprises a bottom plate, wheels, a pushing hand, damping mechanisms, an L-shaped plate, a length adjusting mechanism, width adjusting mechanisms and a bundling mechanism, wherein the wheels are fixedly connected to the bottom part of the bottom plate; the pushing hand is fixedly connected to one end part of the bottom plate; the damping mechanisms are fixedly connected to the other end part of the bottom plate; the L-shaped plate is fixedly connected to the output ends of the damping mechanisms; the length adjusting mechanism is arranged at the end part, which is far away from the pushing hand, of the bottom part of the L-shaped plate. According to the convenient support pipe conveying device provided by the invention, a convenient support pipe conveying effect is achieved.

The invention discloses an anti-falling structure based on an AI intelligent test server power plug. The anti-falling structure comprises a shell; two inserting pieces are arranged on the side wall ofthe shell; two anti-falling mechanisms are arranged on the shell; the anti-falling mechanism comprises a fixing groove formed in the side wall of the shell. A containing cavity is formed in the shell. A placing plate is elastically connected to the bottom in the placing cavity through a pressure spring; the side wall of the placing plate is fixedly connected with a permanent magnet strip; the upper wall of the permanent magnet strip is fixedly connected with a connecting rod, the connecting rod extends into the fixing groove and is fixedly connected with a pressing plate, a control cavity isformed in the shell, the inner wall of the control cavity is elastically connected with a piston plate through a plurality of tension springs, the side wall of the shell is provided with a negative pressure groove, and the negative pressure groove communicates with the control cavity through a connecting channel. The plug can be prevented from loosening, normal work of the AI intelligent test server is ensured, and people can easily pull out the plug and insert the plug into a socket.

The invention provides a buffering connector for tramcars, relates to the field of tramcar connectors, and concretely relates to the buffering connector for the tramcars. The buffering connector for the tramcars can prevent the rigid collision of the tramcars, and has a double buffering function. The buffering connector for the tramcars comprises a hydraulic cylinder, an oil storage tank, a buffering spring, a spring pressure plate, a lock nut, a plug connection end and a one-way throttle valve. A rod chamber of the hydraulic cylinder directly communicates with the oil storage tank. By arranging an oil return passage, the rod cavity of the hydraulic cylinder and a rodless cavity of the hydraulic cylinder communicate with each other. The one-way throttle valve is arranged in the oil returnpassage. The one-way throttle direction is: flowing into the rod cavity of the hydraulic cylinder from the rodless cavity of the hydraulic cylinder. The buffering spring sleeves a piston rod of the hydraulic cylinder. The buffering connector for the tramcars has a good anti-collision effect and can effectively prevent collision deformation of the tramcars.

The invention discloses a dust collector capable of preventing a dust collection barrel from loosening, which comprises a dust collector body (10). In the technical scheme, a dust collection barrel (20) is arranged in the dust collector body (10) and is provided with a hollow handle (2) on the top thereof, a dust collection barrel button switch (3) is arranged at the left opening of the handle (2), the left end of the handle (2) is connected with the dust collector body (10) in a clamping way, and a structure which is used for locking the dust collection barrel button switch (3) is arranged in the handle (2). Compared with the prior art, due to the additional arrangement of simple structures in the dust collector disclosed by the invention, the dust collection barrel button switch can be locked under the control of the user, thereby effectively preventing the problem that the dust collection barrel loosens and falls off due to mistaken operation of the dust collection barrel button switch by the user during movement of the dust collector, enhancing the feeling of the user in using the product, ensuring the safety of the product use, and achieving great significance in the production practice.

The invention discloses an electric automobile charging pile capable of being stored conveniently. The electric automobile charging pile comprises a buried frame, air cylinders are fixedly connected to the two sides of the bottom of the inner wall of the buried frame respectively, transverse rods are fixedly connected to the tops of the air cylinders, and connecting rods are movably connected to the inner sides of the transverse rods. The air cylinders, the transverse rods, the connecting rods, first connecting blocks, movable rods, a connecting pillar, movable rods, moving grooves and a movable plate are used in cooperation, and therefore the problem is solved that an existing electric automobile charging pile cannot be convenient to store. The electric automobile charging pile capable ofbeing stored conveniently has the advantage of being convenient to store; the charging pile can be protected when not used and is prevented from being blown by wind and caught in rain for a long term, mosquitoes can be further prevented from entering the charging pile, in this way, the service life of the charging pile is prolonged, meanwhile, the space occupied by the charging pile is reduced, and the electric automobile charging pile is worthy of application and popularization.

The invention relates to the technical field of production and manufacturing of circuit components. The automatic assembly equipment of the miniature capacitor set in the invention comprises a machineframe, a capacitor feeding device, a capacitor carrying device, a capacitor base feeding device and an elbow device; the capacitor feeding device, the capacitor carrying device, the capacitor base feeding device and the elbow device are installed on the machine frame; the capacitor base feeding device is arranged in the middle part of the machine frame, and comprises two feeding stations; the elbow device is positioned at the side part of the capacitor base feeding device; the capacitor carrying device is positioned over the capacitor carrying device; the capacitor feeding device is installedat the side part of the machine frame; and the capacitor feeding device is positioned at the side part of the elbow device. The automatic assembly equipment of the miniature capacitor set in the invention has the advantages of being automatic to assemble, effective to produce and high in success rate.

The invention belongs to the technical field of spring machining equipment, and particularly relates to a spring chamfering machine. The machine comprise a machine frame, wherein a feeding hopper is fixed at the top of the machine frame, a material guide plate connected with the feeding hopper is arranged at the top of the machine frame, the right side of the material guide plate is bent to a slope, and a plurality of magnetic strips are uniformly arranged on the slope of the material guide plate; a clamping roller driven by a first motor is arranged in the machine frame, and a plurality of placing grooves are uniformly formed in the clamping roller in the circumferential direction; an arc-shaped pressing plate is arranged at the lower end of the material guide plate, the pressure plate isarranged on the front-rear face board of the material guide plate, the gap between the pressing plate and the clamping roller is gradually reduced from the position A to the position B, and when a spring moves to the position B, the spring is just clamped through the pressing plate and the clamping roller; two cylindrical chamfering blocks driven by a second motor are arranged in the machine frame, a chamfer is arranged at the front end of each chamfering block, the two chamfering blocks are front-back symmetrically distributed on the two sides of the clamping roller correspondingly, and therotating directions of the two chamfering blocks are opposite; and a discharging plate is arranged at the position, located below the clamping roller, of the machine frame, and four through grooves are uniformly formed in the discharging plate.

The invention relates to tray-free packaging equipment for autoclaved aerated concrete blocks. The tray-free packaging equipment comprises a stacking mechanism and a transferring mechanism, the lowerend of the stacking mechanism is installed on the existing working ground, and the transferring mechanism is arranged at the upper end of the stacking mechanism. The tray-free packing equipment for the autoclaved aerated concrete blocks adopts the design concept that a single layer is matched with a stacking structure step by step for tray-free packing of the autoclaved aerated concrete blocks, the stacking mechanism and the transferring mechanism are matched to realize single-layer arrangement and overall transportation of the bricks and stacking operation taking the single layer as a cardinal number, so that the overall working efficiency is improved; and the stacking mechanism can achieve the limiting and shape fixing effects on the single-layer bricks, meanwhile an external fixing structure is arranged, so that the overall stability degree in the brick stacking process can be guaranteed.

The invention discloses a filter device of a transmission system. The drive system comprises a transmission case and a transmission mechanism, wherein the filter device comprises a filter unit and a connection unit. The filter unit comprises a partition plate and a filter mechanism, wherein the partition plate is arranged in the transmission case and is provided with an opening, and the filter mechanism is arranged on the partition plate and covers the opening. The connection unit comprises a plurality of connection columns and a plurality of connection parts which can connect the filter mechanism and the partition plate with each connection column. Through utilizing the connection columns and the connection parts which can correspondingly connect the filter mechanism and the partition plate with each connection column, the capability of the connection parts for connecting the filter mechanism and the partition plate is effectively improved, the connection parts can also be prevented from being vibrated to loosen and fall off, and furthermore, the stability of the filter unit is improved.

The invention discloses a frame embedded type glass curtain wall convenient to install. The frame embedded type glass curtain wall comprises a supporting wall plate, the top of the supporting wall plate is rotatably connected with an adjusting installation outer frame through a supporting connecting shaft, the middle positions of the two sides of the back face of the supporting wall plate are fixedly connected with adjusting rails, and the ends, located outside the adjusting rails, of adjusting sliding blocks are fixedly connected with transmission supporting rods. The ends, away from the adjusting sliding blocks, of the transmission supporting rods are fixedly connected with touch wiping rods, active adjusting protection mechanisms are fixedly connected to the left side and the right sideof the position, close to the upper portion, of the front face of the adjusting installation outer frame, and glass supporting base plates are fixedly connected to the two sides of the bottom of a limiting inner groove. The invention relates to the technical field of glass curtain walls. According to the frame embedded type glass curtain wall convenient to install, a protective film is installedon the surface of glass in the installation process, the glass is bonded by the protective film after being broken, downstairs personnel are prevented from being injured, meanwhile, limited supportingtension is provided in windy weather, and the strength of the glass is guaranteed.

The invention provides a bonding wire cutting machine and a bonding wire cutting control method. The bonding wire cutting machine is used for cutting a groove on a bonding wire. The bonding wire cutting machine comprises a rolling unit, a cutter, an adjusting supporting arm and a controller. The rolling unit drives the bonding wire to move axially, and the cutter butts against the radial lateral side of the bonding wire. When the bonding wire moves along the axial direction, the lateral side of the bonding wire is cut by the cutter to form the groove. The adjusting supporting arm is controlled by the controller to adjust the tension of the bonding wire. By means of the bonding wire cutting machine and the bonding wire cutting control method, bonding explosion can be eliminated, working staff can be prevented from being burned, a movable bonding wire can be maintained in a fixed tension range automatically, and falling is avoided.

The invention discloses a tire centering device and method, and relates to the technical field of tire conveying equipment. The tire centering device comprises a mounting frame. An air cylinder is fixedly mounted at the bottom end of the mounting frame, a rotating rod is fixedly connected to the top end of the air cylinder, and the rotating rod penetrates through the bottom end of the mounting frame to be welded to a central rotating disc. Connecting rod modules are fixedly connected to the two sides of the center rotating disc, four clamping jaws are mounted at the upper end of the mounting frame, and a lifting adjusting mechanism is mounted at the top end of the mounting frame. Telescopic outer rods movably connected with the periphery of the top end of the mounting frame are arranged inthe lifting adjusting mechanism, and connecting rods are welded to the bottom ends of the telescopic outer rods. According to the device and the method, the rotating rod of the air cylinder can drivethe center rotating disc to rotate through the air cylinder, the connecting rod modules of the air cylinder drive the four clamping jaws to rotate at the same time, and accordingly, a tire is clampedto the center position. In the working process of a conveying belt, the situation that the tire falls off as the position of the tire is too close to the outer side and normal input of some machiningdevices cannot be met can be prevented.

The invention discloses an agricultural mechanical traction device. The device comprises a tractor connecting plate, a bearing penetrates through the back surface of the tractor connecting plate, a rocking handle penetrates through the bearing, a gear is fixedly connected to the front surface of the rocking handle, a toothed plate is meshed with the bottom of the gear, a movable plate is fixedly connected to the bottom of the toothed plate, and sliding rods are fixedly connected to the left sides of the front and back surfaces of the movable plate. According to the agricultural mechanical traction device, through the arrangement and cooperative use of the bearing, the rocking handle, the gear, the toothed plate, the movable plate, the sliding rods, sliding grooves and a connecting strip, the problem of inconvenient connection of existing agricultural mechanical traction devices is solved; the agricultural mechanical traction device has the advantage of being convenient to connect, during use, the connection difficulty for operators is reduced, the workload of the operators is reduced, a large amount of time can also be saved in the connection process, and the device is convenient for the operators to use and worthy of popularization and application.

The invention relates to the technical field of mechanical clamping jaws for industrial machining, in particular to an industrial manipulator clamping jaw with an auxiliary locating mechanism. The manipulator clamping jaw comprises a screw rod, and a clamping jaw main body is mounted on the outer side of the screw rod; the clamping jaw main body comprises a main beam frame which sleeves the outer sides of the upper end and the lower end of the screw rod; and the main beam frame comprises an upper cross beam which sleeves the outer side of the upper end of the screw rod, and a lower cross beam sleeves the outer side of the lower end of the screw rod. According to the manipulator clamping jaw, through arrangement of threaded meshing connection between the screw rod and a threaded sleeve, by means of meshing driving of threads, a lifting beam is driven by the threaded sleeve to move up and down, and therefore tilting arms connected with the inner walls of the left end and the right end of the lifting beam are rotated up and down and deviated; clamping and loosening operation is conducted by means of pulling of a pull rod; and by means of the thread meshing self-locking between the threaded sleeve and the screw rod, the situation that the device is loosened and falls off is effectively avoided, and the clamping operation stability of the device is conveniently guaranteed.

The invention belongs to the technical field of hot press sintering machines, and discloses an automatic hot press sintering system and method for diamond tool bits. The system comprises a model framecapture manipulator, a plurality of hot press sintering machines and a control system, wherein the hot press sintering machines are respectively arranged at one side or two sides of the model frame capture manipulator; the model frame capture manipulator comprises a walking ground rack, a base, a transmission truss, a model frame capture device and a model frame tray; and the model frame capturedevice comprises a mounting seat, a suspension frame and a capture component. The method is an automatic diamond tool bit sintering process carried out by the automatic hot press sintering system. Thesystem and the method are reasonable in structural design, and are capable of realizing automatic operation, realizing collaborative adjustment operation in allusion to different process requirementsand greatly improving the production efficiency and sustainability of the whole hot press sintering process.

The invention relates to a central axle connecting structure of motor, which comprises: an axial tube on a frame, a bearing inside the axial tube, a central axle through with bearing and rotating whose end near the contact part has smaller annular groove, at least two clamping rings as first and second clamping rings clamped at the annular groove of center axle while the rigidity of first clamping ring is larger than second one; therefore, the invention can reduce rotation noise and vibration of rotor, to improve the operation stability.

The invention relates to an installation method for a balance weight, which comprises the following steps: 1, the balance weight is connected and fastened to a balance weight chain wheel by a plurality of outer hexagon bolts of which the bolt heads are provided with holes; and 2, a steel wire sequentially penetrates through the holes in the heads of the outer hexagon bolts, and is tensioned and locked. According to the installation method disclosed by the invention, the balance weight is connected with the balance weight chain wheel through the outer hexagon bolts and the locked steel wire, the risk of the falling of the balance weight in the operation process of a host machine is reduced, the operation stability of a chain transmission mechanism of the host machine is improved, hidden dangers are completely eradicated, the safety is guaranteed, and the operation reliability and safety of the host machine can be greatly improved.

The invention relates to a cutting machine for producing furniture plates, and belongs to the technical field of cutting machines. The cutting machine comprises a worktable. A support is mounted on the worktable, a cutting device for cutting wood is mounted on the support, a placing seat is horizontally mounted at the bottom of the right side of the worktable, straight slots are formed in the placing seat in the left-right directions, and first lifting frames are independently horizontally arranged in the straight slots; a second lifting frame is vertically connected with the left ends of thefirst lifting frames and is fixedly mounted on a rotary shaft, and the rotary shaft is mounted at the right upper end of the worktable via bearings. The cutting machine for producing the furniture plates has the advantages that the cutting machine is simple in structure and is safe and reliable when the wood is placed on the worktable, and the problems of slipping and falling in placing proceduresdue to crane technologies and the like can be effectively solved; the cutting machine is convenient when operated; sawdust further can be collected and treated under the effect of a collecting funnel, and accordingly the cutting machine can bring convenience for collecting the sawdust.

The invention discloses an Internet of Things monitoring device with an alarm function. The device comprises a first box body, a rotating rod is rotatably connected to the top of the inner cavity of the first box body, a ringing alarm mechanism is arranged in the inner cavity of the first box body, a control box is bolted to the bottom of the front surface of the first box body, a second box body is bolted to the top of the first box body, and a lifting adjusting mechanism is arranged in the inner cavity of the second box body. Through cooperation of an infrared sensor, infrared induction can be performed on an object on the surface of a high-definition camera, and the situation that the high-definition camera is maliciously shielded by the object and an illegal person, and consequently the high-definition camera cannot monitor a field picture is avoided; and through cooperation of the motor, a ratchet wheel, a reset spring, a knocking frame, a first ringing cylinder, a second ringing cylinder, a reed and a sound transmission rod, the high-definition camera can be conveniently and rapidly knocked, when the alarm is started, the first ringing cylinder and the second ringing cylinder can be knocked, and a sound alarm can be given to surrounding workers, so that the surrounding workers can immediately take corresponding measures.

The invention discloses a felling and holding device. The device comprises two holding plates which are provided with cutting saws and are arranged in an arc shape, the upper ends of the two holding plates are rotationally connected, the inner sides of the two holding plates are fixedly connected with a holding belt, a plurality of rotating columns are rotationally connected to each clamping beltat equal intervals, the holding belt is filled with liquid, and each rotating column is divided into a plurality of cavities by a holding belt. According to the device, through the interaction of structures such as a cavity, a flow guide hole, a rotary column and the like, the internal liquid flows when the wood pile is extruded, the part which is extruded under the action of pressure can be flattened, the flattened part can be attached to the surface of the timber pile, the friction force is increased, at the same time, under the limit of the rotating column, the whole timber pile is fixed, the wood pile does not rotate under the action of gravity when lifted upwards, so that the wood piles are tightly held, cutting of the cutting saw is facilitated, the safety of the felling is improved,and the wood piles are prevented from loosening and falling.

The invention discloses a machining clamp for a numerical control machine tool. The machining clamp comprises a numerical control worktable. A clamp installation frame is arranged on the numerical control worktable. The right side face of the clamp installation frame is provided with a clamp fixing seat through bolts. A clamping column is installed at the middle portion of the right side face of the clamp fixing seat. Spring pieces are distributed at the right end of the clamping column at equal intervals in a surrounding manner. A horizontally-arranged adjusting rod is connected to the middle portion of the clamp installation frame in an inserted manner. A rotary handle is installed at the left end of the adjusting rod. The right end of the adjusting rod sequentially penetrates the clamp installation frame, the clamp fixing seat and the clamping column and extends to the outer portion of the right end of the clamping column. According to the machining clamp for the numerical control machine tool, the interior of a workpiece is fixed under the cooperation of the adjusting rod, the spring pieces and an adjusting screw, and therefore the workpiece and the clamping column can be firmly fixed, the workpiece is prevented from loosening and falling, the friction force between the spring pieces and the inner side face of the workpiece can be enlarged through friction protruding points on the surfaces of rubber pieces, and the fixing effect is improved.