CN116214208B - Clamp for numerical control machine tool and use method - Google Patents
Clamp for numerical control machine tool and use method Download PDFInfo
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- CN116214208B CN116214208B CN202211584067.5A CN202211584067A CN116214208B CN 116214208 B CN116214208 B CN 116214208B CN 202211584067 A CN202211584067 A CN 202211584067A CN 116214208 B CN116214208 B CN 116214208B
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- rod
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- sleeve
- hole
- telescopic rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0042—Devices for removing chips
Abstract
The invention discloses a fixture for a numerical control machine and a use method thereof, belonging to the technical field of numerical control fixtures, and comprising a base, wherein a bidirectional threaded rod is horizontally and rotatably arranged on the bottom wall of the base, a stepping motor with an output end fixedly connected with the bidirectional threaded rod is fixedly arranged on the bottom wall of the base, two clamping plates are arranged on the bidirectional threaded rod in a threaded manner, and clamping grooves are symmetrically formed on the side walls of the adjacent sides of the two clamping plates; the side wall of the clamping plate is provided with a spring telescopic rod. Can be under spring telescopic link, guide rail, pneumatic telescopic link, elasticity gasbag's effect, when the great hole of cross-sectional area appears on the part surface, make pneumatic telescopic link extend, the output of pneumatic telescopic link and the lateral wall contact of hole and exert thrust to the hole lateral wall this moment to this thrust is opposite with the thrust direction that splint exerted to the part, consequently can reduce the thrust of splint that is located the position between hole lateral wall and the splint on the part and receives.
Description
Technical Field
The invention relates to the technical field of numerical control clamps, in particular to a clamp for a numerical control machine and a using method thereof.
Background
The numerical control machine tool is an automatic machine tool with a program control system, various control signals are sent out by a central processing unit, and actions of executing components such as a manipulator or a drill bit are controlled by the control signals, so that parts can be automatically processed; in the working process of the numerical control machine tool, the part to be machined needs to be clamped by the clamp, so that the part can be prevented from shaking, and the accuracy in the machining process is improved.
In the existing numerical control machine tool, in the process of machining and producing parts, a clamp is generally used for applying pressure to the side wall and the top wall of the parts, so that the parts are tightly fixed at a designated position, but for the parts needing to be punched on the surface in a large area and machined into a hollowed-out state, when the pressure applied to the side wall of the parts by the clamp is unchanged, the pressure applied to the side wall of the holes is gradually increased along with the gradual increase of the surface hole area, and when a drill bit works on the surface of the parts to cause vibration of the parts, the probability of breakage of the side wall of the holes is increased.
Therefore, a fixture for a numerical control machine and a use method are provided.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a clamp for a numerical control machine and a use method thereof, which can reduce the probability of deformation and damage of parts.
In order to solve the problems, the invention adopts the following technical scheme.
The fixture for the numerical control bed comprises a base, wherein a bidirectional threaded rod is horizontally and rotatably arranged on the bottom wall of the base, a stepping motor with an output end fixedly connected with the bidirectional threaded rod is fixedly arranged on the bottom wall of the base, two clamping plates are arranged on the bidirectional threaded rod in a threaded manner, and clamping grooves are symmetrically formed in the side walls of the adjacent sides of the two clamping plates;
the side wall of the clamping plate is provided with a spring telescopic rod, a connecting rope is fixedly arranged between the output end of the spring telescopic rod and the side wall of the clamping plate, a guide rail is fixedly arranged at the output end of the spring telescopic rod, two mounting rods are slidably arranged on the guide rail, the top wall of each mounting rod is uniformly and fixedly provided with a pneumatic telescopic rod, and an elastic air bag is fixedly arranged between the two mounting rods;
an air pump is fixedly installed on the bottom wall of the base, a first guide pipe communicated with an air inlet of the elastic air bag is fixedly installed at the output end of the air pump, and the output end of the elastic air bag is communicated with the air inlet of the pneumatic telescopic rod.
Further, the pneumatic telescopic rod comprises a sleeve, a supporting rod and a first spring, wherein the sleeve is vertically and fixedly arranged on the top wall of the mounting rod, the supporting rod is movably inserted into the top wall of the sleeve, and the first spring is fixedly arranged between the supporting rod and the inner bottom wall of the sleeve;
the elastic air bag is fixedly connected with the side wall of the sleeve, and the elastic coefficient of the first spring is smaller than that of the elastic air bag.
Further, a diversion cavity is formed in the mounting rod, a shunt tube extending into the sleeve is fixedly inserted into the top wall of the diversion cavity, and the output end of the elastic air bag extends into the diversion cavity.
Further, the screw rod is vertically rotatably arranged on the side wall of the clamping plate, the sliding block is arranged on the screw rod in a threaded manner, the spring telescopic rod is fixedly arranged on the side wall of the sliding block, and the side wall of the clamping plate is provided with a through hole matched with the screw rod.
Further, a first cavity communicated with the sleeve is formed in the support rod, and first air holes are uniformly formed in the side wall of the first cavity.
Further, the elastic cloth is fixedly installed between the side walls of the adjacent sides of the two clamping plates, the sleeve penetrates through the elastic cloth, and the side walls of the sleeve are fixedly connected with the elastic cloth.
Further, a sliding groove is formed in the top wall of the clamping plate, a mounting plate is vertically and slidably mounted in the sliding groove, a second cavity communicated with the sliding groove is formed in the mounting plate, a second air hole is formed in the side wall of the second cavity, and a second guide pipe communicated with the sliding groove is fixedly mounted on the air outlet of the air pump.
Further, a pressure valve is embedded on the first conduit.
Further, an elastic film is fixedly arranged on the side wall of the supporting rod, the elastic film covers the surface of the first air hole, and the elastic coefficient of the elastic film is larger than that of the first spring.
The invention also provides a using method of the clamp for the numerical control machine tool, which comprises the following steps:
s1, placing a part to be processed between two clamping grooves, supporting the part through the clamping grooves, and then driving a bidirectional threaded rod to rotate by a stepping motor, so that the part is fixed through a clamping plate;
s2, screwing the screw rod, driving the spring telescopic rod to move up and down through the sliding block, and adjusting the initial position of the pneumatic telescopic rod, so that when the pneumatic telescopic rod is fully extended, the top end of the supporting rod and the top wall of the part can be positioned on the same plane;
s3, when a large-area hole appears on the surface of the part close to the clamping plate, a worker pulls the connecting rope to adjust the extension amount of the spring telescopic rod, so that the pneumatic telescopic rod moves to the position right below the hole, and then an air pump is started to supply air for the elastic air bag and the pneumatic telescopic rod;
s4, the gas exhausted by the air pump drives the supporting rod to extend out of the sleeve, when the supporting rod extends out to the maximum extent, the elastic air bag expands, the expanded elastic air bag pushes the sleeve, the supporting rod is driven by the sleeve to be tightly attached to the side wall of the hole, and the supporting rod applies thrust to the side wall of the hole.
Compared with the prior art, the invention has the beneficial effects that:
(1) This scheme is under spring telescopic link, guide rail, pneumatic telescopic link, elastic air bag's effect, when the great hole of cross-sectional area appears on the part surface, makes pneumatic telescopic link extend, and the output of pneumatic telescopic link and the lateral wall contact of hole and exert thrust to the hole lateral wall this moment to this thrust is opposite with the thrust direction that splint to the part was applyed, consequently can reduce the thrust of splint that is located the position between hole lateral wall and the splint on the part and receives, when the drill bit punches and leads to the part shake at the part surface, has played the effect of preventing that the weak position of hole lateral wall from taking place deformation.
(2) According to the scheme, under the action of the first cavity and the first air hole, the sleeve is externally exhausted through the first cavity and the first air hole so as to achieve the pressure relief effect, the surface of the hole is impacted by the airflow exhausted outwards through the first air hole, so that the part can be cooled, the part is kept in a high-hardness state, the probability of part deformation is reduced, and the machining accuracy is further improved.
(3) This scheme is under the effect of elasticity cloth, through setting up the piece that drops in the elasticity cloth collection hole, can prevent that the piece from dropping the guide rail surface, has played the effect that ensures that the elasticity gasbag can promote pneumatic telescopic link and remove.
Drawings
FIG. 1 is a first perspective view of the present invention;
FIG. 2 is a schematic view of a second perspective structure of the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present invention;
FIG. 4 is an enlarged schematic view of the structure of FIG. 2B according to the present invention;
FIG. 5 is a schematic view of the combined structure of the pneumatic telescopic rod and the elastic air bag of the invention;
FIG. 6 is a combined cross-sectional view of the pneumatic telescoping rod and mounting rod of the present invention;
FIG. 7 is a cross-sectional view of a splint of the present invention;
FIG. 8 is a front view of the present invention;
FIG. 9 is a schematic view of the combined structure of the connecting rope, the pneumatic telescopic rod and the clamping plate of the invention.
The reference numerals in the figures illustrate:
1. a base; 2. a two-way threaded rod; 3. a stepping motor; 4. a clamping plate; 5. a spring telescoping rod; 6. a connecting rope; 7. a guide rail; 8. a mounting rod; 9. a pneumatic telescopic rod; 901. a sleeve; 902. a support rod; 903. a first spring; 10. an elastic air bag; 11. an air pump; 12. a first conduit; 13. a diversion cavity; 14. a shunt; 15. a screw; 16. a slide block; 17. a through hole; 18. a first cavity; 19. a first air hole; 20. an elastic cloth; 21. a chute; 22. a mounting plate; 23. a second cavity; 24. a second air hole; 25. a second conduit; 26. a pressure valve; 27. an elastic membrane.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present invention are within the protection scope of the present invention.
Example 1:
referring to fig. 1 to 9, a fixture for a numerical control machine comprises a base 1, wherein a bidirectional threaded rod 2 is horizontally and rotatably arranged on the bottom wall of the base 1, a stepping motor 3 with an output end fixedly connected with the bidirectional threaded rod 2 is fixedly arranged on the bottom wall of the base 1, two clamping plates 4 are arranged on the bidirectional threaded rod 2 in a threaded manner, and clamping grooves are symmetrically formed in the side walls of the adjacent sides of the two clamping plates 4;
a spring telescopic rod 5 is arranged on the side wall of the clamping plate 4, a connecting rope 6 is fixedly arranged between the output end of the spring telescopic rod 5 and the side wall of the clamping plate 4, a guide rail 7 is fixedly arranged at the output end of the spring telescopic rod 5, two mounting rods 8 are slidably arranged on the guide rail 7, a pneumatic telescopic rod 9 is uniformly and fixedly arranged on the top wall of the mounting rod 8, and an elastic air bag 10 is fixedly arranged between the two mounting rods 8;
an air pump 11 is fixedly installed on the bottom wall of the base 1, a first conduit 12 communicated with the air inlet of the elastic air bag 10 is fixedly installed on the output end of the air pump 11, and the output end of the elastic air bag 10 is communicated with the air inlet of the pneumatic telescopic rod 9.
The pneumatic telescopic rod 9 comprises a sleeve 901, a supporting rod 902 and a first spring 903, wherein the sleeve 901 is vertically and fixedly arranged on the top wall of the mounting rod 8, the supporting rod 902 is movably inserted into the top wall of the sleeve 901, and the first spring 903 is fixedly arranged between the supporting rod 902 and the inner bottom wall of the sleeve 901;
the elastic air bag 10 is fixedly connected with the side wall of the sleeve 901, and the elastic coefficient of the first spring 903 is smaller than that of the elastic air bag 10.
The installation rod 8 is provided with a diversion cavity 13, a shunt tube 14 extending into the sleeve 901 is fixedly inserted into the top wall of the diversion cavity 13, and the output end of the elastic air bag 10 extends into the diversion cavity 13.
When a part is required to be machined by using a numerical control machine tool, the part to be machined is firstly placed between the two clamping grooves, then the stepping motor 3 is started, the two-way threaded rod 2 is driven to rotate by the stepping motor 3, and at the moment, the two clamping plates 4 are close to each other, so that the part can be tightly clamped.
In the initial state, the spring telescopic rod 5 is in an extended state, and under the action of the first spring 903, the supporting rod 902 is positioned in the sleeve 901, namely the pneumatic telescopic rod 9 is in a contracted state; when the part is clamped, the drill bit starts to punch holes on the surface of the part, when holes on the surface of the part are more and the distance between the side wall of a single hole and the side wall of the part is less than 3 cm, a worker manually pulls the connecting rope 6, the connecting rope 6 drives the output end of the spring telescopic rod 5 to move, in the process, the mounting rod 8 gradually moves to be right below the holes, after the mounting rod 8 moves to be right below the holes, the output end of a part of pneumatic telescopic rods 9 on the top wall of the mounting rod 8 is contacted with the bottom wall of the part, and the output ends of the rest pneumatic telescopic rods 9 are located right below the holes;
then, the air pump 11 is started, at this time, the air discharged from the output end of the air pump 11 enters the elastic air bag 10 along the first conduit 12, at this time, part of the air in the elastic air bag 10 flows into the sleeve 901 through the flow guide cavity 13 and the shunt tube 14, and as the elastic coefficient of the first spring 903 is smaller than that of the elastic air bag 10, the elastic air bag 10 begins to deform after the first spring 903 deforms, so as to increase the air pressure in the sleeve 901 along with the increase of the air content in the sleeve 901, at this time, the air pressure born by the support rod 902 gradually increases, and when the air pressure born by the support rod 902 is greater than the elastic force of the first spring 903, the support rod 902 extends out of the sleeve 901 and pulls the first spring 903, at this time, the output end of the pneumatic telescopic rod 9 positioned right below the hole extends into the hole, and the output end of the pneumatic telescopic rod 9 positioned below the bottom wall of the part closely contacts with the bottom wall of the part; when the supporting rod 902 stretches out of the sleeve 901 to the maximum extent, the elastic air bag 10 begins to expand, at the moment, the elastic air bag 10 begins to push the two mounting rods 8 to be away from each other, and the side wall of the supporting plate is attached to the side wall of the hole in the process, so that the supporting rod 902 can apply thrust to the side wall of the hole, and the thrust is opposite to the thrust direction of the clamping plate 4 to the part, so that the thrust of the clamping plate 4 on the part, which is positioned between the side wall of the hole and the clamping plate 4, can be reduced, and therefore, when the drill bit punches on the surface of the part to cause shaking of the part, the function of preventing the weak part of the side wall of the hole from deformation is achieved.
And when the thrust applied by the support rod 902 to the side wall of the hole is the same as the thrust applied by the clamping plate 4 to the part, the fixing effect on the part is further improved, the part is ensured to be in a static state, and the effect of improving the machining accuracy is achieved.
As shown in fig. 2 and 4, a screw 15 is vertically rotatably mounted on the side wall of the clamping plate 4, a sliding block 16 is mounted on the screw 15 in a threaded manner, the spring telescopic rod 5 is fixedly mounted on the side wall of the sliding block 16, and a through hole 17 matched with the screw 15 is formed in the side wall of the clamping plate 4.
Through adopting above-mentioned technical scheme, under the effect of guide bar, at screw rod 15 pivoted in-process, slider 16 can only follow screw rod 15 reciprocates and can't rotate, therefore at the in-process that the staff twisted screw rod 15, slider 16 drove spring telescopic link 5 and removes to can change the initial height of installation pole 8.
When the thickness of the processed part is different, the staff screws the screw 15 to adjust the height of the spring telescopic rod 5, namely to adjust the initial height of the pneumatic telescopic rod 9, so that when the pneumatic telescopic rod 9 is in the maximum extension state, the end face of the top end of the supporting rod 902 and the top wall of the processed part are ensured to be in the same plane, the contact area of the supporting rod 902 and the side wall of the hole is increased, and the effect of improving the fixing effect of the part is achieved.
As shown in fig. 6, a first cavity 18 communicated with a sleeve 901 is formed on a supporting rod 902, and first air holes 19 are uniformly formed on the side wall of the first cavity 18.
By adopting the technical scheme, after the supporting rod 902 extends out of the sleeve 901, the air pump 11 still supplies air for the elastic air bag 10 and the sleeve 901, so that the sleeve 901 is exhausted outwards through the first cavity 18 and the first air holes 19 to achieve the pressure relief effect, and the air flow exhausted outwards through the first air holes 19 impacts the surfaces of the holes, so that the parts can be cooled, and the parts can be kept in a high-hardness state; because the drill bit can drive the part to shake in the process of processing the surface of the part, the part is kept in a high-hardness state by cooling the part, the probability of part deformation can be reduced in the process of shaking the part, and the processing accuracy is further improved.
In the process of stretching the pneumatic telescopic rod 9, the air flow discharged from the first air hole 19 impacts the hole side wall, and at the moment, the scraps attached to the hole side wall are washed away by the air flow, so that the supporting rod 902 can be ensured to be directly contacted with the hole side wall in the process of pushing the pneumatic telescopic rod 9 to move by the elastic air bag 10, namely, the hole side wall is prevented from being scratched due to the scraps being mixed between the supporting rod 902 and the hole side wall.
As shown in fig. 8, an elastic cloth 20 is fixedly installed between the side walls of the adjacent sides of the two clamping plates 4, the sleeve 901 penetrates through the elastic cloth 20, and the side walls of the sleeve 901 are fixedly connected with the elastic cloth 20.
Through adopting above-mentioned technical scheme, in the course of the work, the piece size that is bored down by the drill bit is different, consequently when the piece card in the hole on the part, if bracing piece 902 stretches into the hole this moment, can lead to the piece in the hole to drop, consequently collect the piece that drops in the hole through setting up elastic cloth 20, can prevent that the piece from dropping to guide rail 7 surface, played the effect that ensures that elastic gasbag 10 can promote pneumatic telescopic link 9 and remove.
Because the fragments that drop in the hole are collected by the elastic cloth 20, therefore when finishing processing, the staff only need collect the fragments on the surface of the elastic cloth 20, thereby reducing the workload of the staff and playing a role in improving the working efficiency.
As shown in fig. 7, a chute 21 is formed on the top wall of the clamping plate 4, a mounting plate 22 is vertically and slidably mounted in the chute 21, a second cavity 23 communicated with the chute 21 is formed on the mounting plate 22, a second air hole 24 is formed on the side wall of the second cavity 23, and a second conduit 25 communicated with the chute 21 is fixedly mounted on the air outlet of the air pump 11.
The first conduit 12 is embedded with a pressure valve 26.
By adopting the above technical solution, since the pressure valve 26 is embedded on the first conduit 12, at the moment when the air pump 11 is energized, the air discharged from the air pump 11 flows only through the second conduit 25 under the action of the pressure valve 26, when the air flows into the chute 21 along the second conduit 25, the air pressure in the chute 21 and the second cavity 23 increases, at this time, under the action of the air pressure, the mounting plate 22 extends out of the chute 21, then the air in the second cavity 23 flows outwards through the second air hole 24, and because the cross-sectional area of the second air hole 24 is smaller, the air pressure in the second cavity 23 continuously increases, and because the first conduit 12 and the second conduit 25 are both communicated with the output end of the air pump 11, when the air pressure in the second cavity 23 increases, the air pressure in the first conduit 12 also increases under the action of the second conduit 25, when the air pressure in the first conduit 12 is enough to trigger the pressure valve 26, the pressure valve 26 opens, and at this time, the air discharged from the air pump 11 flows into the elastic air bag 10 along the first air pipe.
The elastic bladder 10 thus begins to expand after the mounting plate 22 has been extended from the chute 21 by the pressure valve 26; namely, under the action of the airflow impact force discharged from the second air hole 24 in the process of pushing the pneumatic telescopic rod 9 by the elastic air bag 10, the fragments on the surface of the part can be prevented from falling between the side wall of the hole and the side wall of the supporting rod 902, and the cleanliness between the side wall of the supporting rod 902 and the side wall of the part is further improved.
And the gas exhausted from the second air hole 24 impacts the surface of the part, so that when the drill bit is polished on the surface of the part to cause the part to be heated and softened, the temperature of the part and the drill bit can be timely reduced, the probability of deformation of the part is reduced, and the machining accuracy is improved.
As shown in fig. 6, an elastic film 27 is fixedly installed on the side wall of the support bar 902, the elastic film 27 covers the surface of the first air hole 19, and the elastic coefficient of the elastic film 27 is larger than that of the first spring 903.
Through adopting above-mentioned technical scheme, because the elasticity coefficient of elastic membrane 27 is greater than the elasticity coefficient of first spring 903, consequently, in the in-process that bracing piece 902 stretched out from sleeve 901, elastic membrane 27 remains initial condition all the time, after bracing piece 902 removes in the hole, the atmospheric pressure in first cavity 18 increases, consequently the gas that discharges in first cavity 18 will strike elastic membrane 27 and take place deformation, thereby make elastic membrane 27 and hole lateral wall laminating, the same thrust of exerting of elastic membrane 27 that expands this moment to the part lateral wall, consequently, further improved the fixed effect to the part, play the effect of preventing the part shake.
The invention also provides a using method of the clamp for the numerical control machine tool, which comprises the following steps:
s1, placing a part to be processed between two clamping grooves, supporting the part through the clamping grooves, and then driving a bidirectional threaded rod 2 to rotate by a stepping motor 3, so that the part is fixed through a clamping plate 4;
s2, screwing a screw 15, and driving a spring telescopic rod 5 to move up and down through a sliding block 16, so that the initial position of the pneumatic telescopic rod 9 is adjusted, and when the pneumatic telescopic rod 9 is fully extended, the top end of a supporting rod 902 and the top wall of a part can be positioned on the same plane;
s3, when a large-area hole appears on the surface of the part close to the clamping plate 4, a worker pulls the connecting rope 6 to adjust the extension amount of the spring telescopic rod 5, so that the pneumatic telescopic rod 9 moves to the position right below the hole, then the air pump 11 is started, and air is supplied to the elastic air bag 10 and the pneumatic telescopic rod 9 through the air pump 11;
and S4, the gas exhausted by the air pump 11 drives the supporting rod 902 to extend out of the sleeve 901, when the supporting rod 902 extends out to the maximum extent, the elastic air bag 10 is inflated, the inflated elastic air bag 10 pushes the sleeve 901, so that the supporting rod 902 is driven by the sleeve 901 to be tightly attached to the side wall of the hole, and the supporting rod 902 applies thrust to the side wall of the hole.
The using method comprises the following steps: when the thickness of the processed parts is different, the staff screws the screw 15 to adjust the height of the spring telescopic rod 5, namely to adjust the initial height of the pneumatic telescopic rod 9, so that when the pneumatic telescopic rod 9 is in the maximum extension state, the end face of the top end of the supporting rod 902 and the top wall of the processed part are ensured to be in the same plane.
When the part is clamped, the drill bit starts to punch holes on the surface of the part, when holes on the surface of the part are more and the distance between the side wall of a single hole and the side wall of the part is less than 3 cm, a worker manually pulls the connecting rope 6, the connecting rope 6 drives the output end of the spring telescopic rod 5 to move, after the mounting rod 8 moves to be right below the holes, the output end of part of the pneumatic telescopic rod 9 on the top wall of the mounting rod 8 contacts with the bottom wall of the part, and the output ends of the rest pneumatic telescopic rods 9 are located right below the holes;
then the air pump 11 is started, the air pressure in the sleeve 901 is increased along with the increase of the air content in the sleeve 901, the air pressure borne by the supporting rod 902 is gradually increased, when the air pressure borne by the supporting rod 902 is larger than the elastic force of the first spring 903, the supporting rod 902 stretches out of the sleeve 901 and pulls the first spring 903, at the moment, the output end of the pneumatic telescopic rod 9 positioned right below the hole stretches into the hole, and the output end of the pneumatic telescopic rod 9 positioned below the bottom wall of the part is in close contact with the bottom wall of the part; when the support bar 902 is extended from the sleeve 901 to the maximum extent, the elastic air bag 10 starts to expand, at this time, the elastic air bag 10 starts to push the two mounting bars 8 away from each other, and in the process, the side wall of the support bar is attached to the side wall of the hole, so that the thrust can be applied to the side wall of the hole through the support bar 902.
The above description is only of the preferred embodiments of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.
Claims (7)
1. The utility model provides a fixture for numerical control machine, includes base (1), its characterized in that: the base is characterized in that a bidirectional threaded rod (2) is horizontally rotatably arranged on the bottom wall of the base (1), a stepping motor (3) with an output end fixedly connected with the bidirectional threaded rod (2) is fixedly arranged on the bottom wall of the base (1), two clamping plates (4) are arranged on the bidirectional threaded rod (2) in a threaded manner, and clamping grooves are symmetrically formed in the side walls of the adjacent sides of the two clamping plates (4);
the device is characterized in that a spring telescopic rod (5) is arranged on the side wall of the clamping plate (4), a connecting rope (6) is fixedly arranged between the output end of the spring telescopic rod (5) and the side wall of the clamping plate (4), a guide rail (7) is fixedly arranged on the output end of the spring telescopic rod (5), two mounting rods (8) are slidably arranged on the guide rail (7), a pneumatic telescopic rod (9) is uniformly and fixedly arranged on the top wall of the mounting rod (8), and an elastic air bag (10) is fixedly arranged between the two mounting rods (8);
an air pump (11) is fixedly arranged on the bottom wall of the base (1), a first conduit (12) communicated with an air inlet of an elastic air bag (10) is fixedly arranged on the output end of the air pump (11), and the output end of the elastic air bag (10) is communicated with the air inlet of a pneumatic telescopic rod (9);
the pneumatic telescopic rod (9) comprises a sleeve (901), a supporting rod (902) and a first spring (903), wherein the sleeve (901) is vertically and fixedly arranged on the top wall of the mounting rod (8), the supporting rod (902) is movably inserted into the top wall of the sleeve (901), and the first spring (903) is fixedly arranged between the supporting rod (902) and the inner bottom wall of the sleeve (901);
the elastic air bag (10) is fixedly connected with the side wall of the sleeve (901), and the elastic coefficient of the first spring (903) is smaller than that of the elastic air bag (10);
a diversion cavity (13) is formed in the mounting rod (8), a shunt tube (14) extending into the sleeve (901) is fixedly inserted into the top wall in the diversion cavity (13), and the output end of the elastic air bag (10) extends into the diversion cavity (13);
screw rods (15) are vertically rotatably arranged on the side walls of the clamping plates (4), sliding blocks (16) are arranged on the screw rods (15) in a threaded mode, the spring telescopic rods (5) are fixedly arranged on the side walls of the sliding blocks (16), and through holes (17) matched with the screw rods (15) are formed in the side walls of the clamping plates (4).
2. The fixture for a numerical control machine according to claim 1, wherein: a first cavity (18) communicated with the sleeve (901) is formed in the supporting rod (902), and first air holes (19) are uniformly formed in the side wall of the first cavity (18).
3. The fixture for a numerical control machine according to claim 2, wherein: an elastic cloth (20) is fixedly installed between the side walls of the adjacent sides of the two clamping plates (4), the sleeve (901) penetrates through the elastic cloth (20), and the side walls of the sleeve (901) are fixedly connected with the elastic cloth (20).
4. A fixture for a numerical control machine according to claim 3, characterized in that: the top wall of the clamping plate (4) is provided with a sliding groove (21), a mounting plate (22) is vertically and slidably arranged in the sliding groove (21), a second cavity (23) communicated with the sliding groove (21) is formed in the mounting plate (22), the side wall of the second cavity (23) is provided with a second air hole (24), and a second guide pipe (25) communicated with the sliding groove (21) is fixedly arranged on the exhaust port of the air pump (11).
5. The fixture for a numerical control machine according to claim 4, wherein: the first conduit (12) is embedded with a pressure valve (26).
6. The fixture for a numerical control machine according to claim 5, wherein: an elastic film (27) is fixedly arranged on the side wall of the supporting rod (902), the elastic film (27) covers the surface of the first air hole (19), and the elastic coefficient of the elastic film (27) is larger than that of the first spring (903).
7. A method of using a fixture for a numerically controlled machine tool as in any of claims 1-6, characterized by: the method comprises the following steps:
s1, placing a part to be processed between two clamping grooves, supporting the part through the clamping grooves, and then driving a bidirectional threaded rod (2) to rotate by a stepping motor (3), so that the part is fixed through a clamping plate (4);
s2, screwing a screw (15), driving the spring telescopic rod (5) to move up and down through the sliding block (16), and adjusting the initial position of the pneumatic telescopic rod (9), so that when the pneumatic telescopic rod (9) is fully extended, the top end of the supporting rod (902) and the top wall of the part can be positioned on the same plane;
s3, when a large-area hole appears on the part surface close to the clamping plate (4), a worker pulls the connecting rope (6) to adjust the extension amount of the spring telescopic rod (5) so that the pneumatic telescopic rod (9) moves to the position right below the hole, and then the air pump (11) is started to supply air for the elastic air bag (10) and the pneumatic telescopic rod (9) through the air pump (11);
s4, the gas exhausted by the air pump (11) drives the supporting rod (902) to extend out of the sleeve (901) at first, when the supporting rod (902) extends out to the maximum extent, the elastic air bag (10) is expanded, the expanded elastic air bag (10) pushes the sleeve (901), so that the supporting rod (902) is driven by the sleeve (901) to be tightly attached to the side wall of the hole, and the supporting rod (902) applies thrust to the side wall of the hole.
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| CN202211584067.5A CN116214208B (en) | 2022-12-09 | 2022-12-09 | Clamp for numerical control machine tool and use method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211584067.5A CN116214208B (en) | 2022-12-09 | 2022-12-09 | Clamp for numerical control machine tool and use method |
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| CN116214208A CN116214208A (en) | 2023-06-06 |
| CN116214208B true CN116214208B (en) | 2023-09-15 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018166181A1 (en) * | 2017-03-17 | 2018-09-20 | 山东大学 | Flexible clamp and method for use in milling blades having large complex curved surfaces |
| EP3715046A1 (en) * | 2019-03-29 | 2020-09-30 | Citic Dicastal Co., Ltd. | Wheel hub tool positioning fixture |
| CN212420472U (en) * | 2020-05-22 | 2021-01-29 | 佛山市南海志源机械有限公司 | Special fixture for numerical control machining center |
| CN114102238A (en) * | 2021-10-28 | 2022-03-01 | 张洪甫 | Multi-station numerical control double-side milling machine |
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2022
- 2022-12-09 CN CN202211584067.5A patent/CN116214208B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018166181A1 (en) * | 2017-03-17 | 2018-09-20 | 山东大学 | Flexible clamp and method for use in milling blades having large complex curved surfaces |
| EP3715046A1 (en) * | 2019-03-29 | 2020-09-30 | Citic Dicastal Co., Ltd. | Wheel hub tool positioning fixture |
| CN212420472U (en) * | 2020-05-22 | 2021-01-29 | 佛山市南海志源机械有限公司 | Special fixture for numerical control machining center |
| CN114102238A (en) * | 2021-10-28 | 2022-03-01 | 张洪甫 | Multi-station numerical control double-side milling machine |
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| 精车干式薄壁气缸套支承肩夹具;牟建龙，孙明彦，刘全福;机械研究与应用(04);27-28页 * |
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| CN116214208A (en) | 2023-06-06 |
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