CN117300691A - Pneumatic automatic centering internal cooling clamp device - Google Patents

Pneumatic automatic centering internal cooling clamp device Download PDF

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Publication number
CN117300691A
CN117300691A CN202311243127.1A CN202311243127A CN117300691A CN 117300691 A CN117300691 A CN 117300691A CN 202311243127 A CN202311243127 A CN 202311243127A CN 117300691 A CN117300691 A CN 117300691A
Authority
CN
China
Prior art keywords
elastic clamp
clamp
nozzle
elastic
hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311243127.1A
Other languages
Chinese (zh)
Inventor
唐海元
毛爽军
郑延吉
肖平
张柳周
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Flyta Technology Development Co ltd
Original Assignee
Shenzhen Flyta Technology Development Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Flyta Technology Development Co ltd filed Critical Shenzhen Flyta Technology Development Co ltd
Priority to CN202311243127.1A priority Critical patent/CN117300691A/en
Publication of CN117300691A publication Critical patent/CN117300691A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B23Q3/08—Work-clamping means other than mechanically-actuated
    • 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
    • B23Q11/10—Arrangements for cooling or lubricating tools or work
    • 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
    • B23Q2703/00—Work clamping
    • B23Q2703/02—Work clamping means
    • B23Q2703/04—Work clamping means using fluid means or a vacuum
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The invention relates to a pneumatic automatic centering internal cooling clamp device, which comprises a cylinder mechanism, an elastic clamp, a locking ring opening, a pull core, a pull rod and a nozzle connected with a cooling pipe, wherein the cylinder mechanism comprises a piston, the elastic clamp is fixed above the cylinder mechanism, the pull core is arranged in the elastic clamp and is connected with the piston, the locking ring opening is sleeved outside the elastic clamp and is matched with the elastic clamp through a conical surface, the pull rod passes through the elastic clamp in a non-contact manner and is connected with the pull core and the locking ring opening, the piston moves up and down by pulling the locking ring opening through the pull core through upward and downward movement, the elastic clamp is folded or rebounded to adapt and clamp tubular workpieces with different sizes when the locking ring opening moves up and down, and the nozzle is inserted into the elastic clamp and passes through the tubular workpiece from bottom to top to spray cooling liquid to a cutter with the opening of the nozzle.

Description

Pneumatic automatic centering internal cooling clamp device
Technical Field
The invention relates to the field of processing of tiny through holes, in particular to a pneumatic automatic centering internal cooling clamp device.
Background
Heretofore, the problems of cutting cooling and positioning of micro through holes have been a major problem in the industry, which has been frustrating the progress of machining techniques. The normal processing, the cooling oil can only be sprayed to the outer surface of the part, the cooling liquid can not enter the small hole of the tubular part, the cooling liquid can not cool the hole, the cooling and lubrication of the cutting process are insufficient, the cutting chip removal is not smooth, the cutting heat can not be emitted, the abrasion of the processing cutter is accelerated, the processing cutter is easy to break, and a series of problems such as serious chromatic aberration, exceeding standard of finish, abnormal cutting lines, unstable overall processing working condition of the part and the like are caused. The conventional internal cooling matched cutter on the market has high manufacturing cost, and the operation of opening an internal cooling pipeline on the cutter brings about the problem that the rigidity of the cutter is poor, and the cutter is more severely required for manufacturing materials of the cutter, so that the application of the cutter is greatly limited, and the production and use cost of the cutter is increased by times.
Disclosure of Invention
The invention aims to solve the technical problem of providing a pneumatic automatic centering internal cooling clamp device aiming at the defects in the prior art.
The technical scheme adopted for solving the technical problems is as follows: the device comprises a cylinder mechanism, an elastic clamp, a locking ring opening, a pull core, a pull rod and a nozzle, wherein the elastic clamp is vertically arranged and can be folded and rebounded to scatter in the horizontal radial direction, the nozzle is connected with a cooling pipe, the cylinder mechanism comprises a piston, the elastic clamp is fixed above the cylinder mechanism, the pull core is vertically arranged in the elastic clamp and is connected with the piston, the locking ring opening is sleeved outside the elastic clamp and is matched with the elastic clamp through a conical surface, the pull rod passes through the elastic clamp in a non-contact mode and is connected with the pull core and the locking ring opening, the piston can move up and down through pulling the locking ring opening by the pull core, the elastic clamp is folded or rebounded to scatter to adapt and clamp tubular workpieces with different sizes when the locking ring opening moves up and down, and the nozzle is inserted into the elastic clamp and is positioned under the tubular workpieces to spray cooling liquid from bottom to top to bottom through the tubular workpieces.
Further, in the pneumatic self-centering internal cooling clamp device, the nozzle is connected with the elastic clamp through threads, and the nozzle is inserted into the elastic clamp in a threaded fit mode along the horizontal radial direction.
Further, in the pneumatic automatic centering internal cooling clamp device, the inside of the elastic clamp comprises an internal threaded hole arranged along the radial direction of the elastic clamp, the inside of the nozzle is of a hollow structure, the large end of the nozzle is used for being connected with the cooling pipe, the small end of the nozzle is provided with external threads for being installed in the internal threaded hole of the elastic clamp, the nozzle is locked by a fixing nut after being in threaded connection with the elastic clamp, the small end of the nozzle is further provided with the opening on the circumferential side wall, the small end of the nozzle extends in the radial direction of the elastic clamp in the elastic clamp and passes through the central line of the elastic clamp, and the opening faces upwards to the inner hole of the tubular workpiece.
Further, in the pneumatic automatic centering internal cooling clamp device, the radial dimension of the upper section of the pull core is larger than that of the lower section, the lower section of the pull core is provided with external threads for being in threaded connection with the piston, the upper section of the pull core is provided with a first pull rod hole matched with the outer diameter of the pull rod along the radial direction, the locking ring opening is provided with two second pull rod holes opposite to the two ends of the first pull rod hole at the same height position as the first pull rod hole, the pull rod penetrates through the first pull rod hole and the two second pull rod holes to lock and fix the pull core and the locking ring opening, the elastic clamp is provided with two strip holes in a penetrating manner inside and outside at positions facing the two second pull rod holes, the length of the strip holes in the axial direction of the elastic clamp is larger than the upper and lower strokes of the pull core, and the pull rod passes through the strip holes in a non-contact manner.
Further, in the pneumatic automatic centering internal cooling clamp device, an inner conical hole is formed in the inner ring of the locking ring opening, and an outer ring of the elastic clamp is provided with an outer conical surface attached to the inner conical hole of the locking ring opening.
Further, in the pneumatic automatic centering internal cooling clamp device, the device further comprises a fixing seat, wherein the elastic clamp comprises a main body part and a connecting part from top to bottom along the length direction of the elastic clamp, the locking ring opening is sleeved outside the main body part, and the sleeved position of the locking ring opening is lower than the position of the nozzle inserted into the elastic clamp;
the cylinder mechanism further comprises a cylinder body, a piston hole is formed in the top of the cylinder body, an outer circular boss protrudes out of the piston hole, the piston is arranged in the cylinder body and protrudes out of the piston hole and the outer circular boss and then is in threaded connection with the pull core, the fixing seat is fixed on the cylinder body and is sleeved outside the outer circular boss, and the connecting portion is inserted into the fixing seat and is in threaded fit with the fixing seat.
Further, in the pneumatic automatic centering internal cooling clamp device, an elastic groove is formed in the elastic clamp, the elastic groove extends from the top end face of the elastic clamp to penetrate through the main body part along the axial direction of the elastic clamp, the elastic groove is of a star-shaped structure on the radial cross section of the elastic clamp, the center of the star-shaped structure coincides with the center of the elastic clamp, the elastic groove divides the main body part into multi-flap clamping blocks distributed around the center of the elastic clamp, the multi-flap clamping blocks enclose a clamping hole for inserting the tubular workpiece, the clamping hole comprises an annular flange, and the end face of the tubular workpiece abuts against the annular flange after the tubular workpiece is inserted into the clamping hole.
Further, in the pneumatic automatic centering internal cooling clamp device, the elastic clamp further comprises a transition part connected between the main body part and the connecting part, the outer diameter of the connecting part is smaller than that of the main body part, the outer ring of the transition part is a conical surface, the top opening of the fixing seat is conical, the lower section of the transition part is inserted into the top opening of the fixing seat and matched with the conical surface of the fixing seat, and the elastic groove extends to the upper section of the transition part in the axial direction of the elastic clamp.
Further, in the pneumatic automatic centering internal cooling clamp device, the cylinder body is in a cylinder shape with an open bottom, the cylinder side wall of the cylinder body is connected with two air pipe interfaces, the bottom of the cylinder body is fixed on a cylinder bottom plate through bolts, sealing grooves are formed on contact surfaces of the cylinder body and the cylinder bottom plate, and a bottom plate sealing ring is arranged in the sealing grooves of the cylinder body and the cylinder bottom plate to realize sealing of the cylinder body and the cylinder bottom plate;
the piston comprises a cylindrical part and a disc-shaped part formed by extending radially from the outer peripheral wall of the cylindrical part, the disc-shaped part is sealed with the barrel-shaped side wall of the cylinder body through a large sealing ring, and the cylindrical part is sealed with the piston hole through a small sealing ring.
Further, in the pneumatic automatic centering internal cooling fixture device, the pneumatic automatic centering internal cooling fixture device further comprises a plurality of pressing blocks distributed around the fixed seat, the pressing blocks are locked with the top of the cylinder body through bolts, the outer edge of the bottom of the fixed seat protrudes radially to form a flange, the pressing blocks are fan-shaped blocks, steps matched with the flange are formed at the bottom of the pressing blocks, and the steps of the pressing blocks are pressed on the flange to jointly fix the fixed seat.
The pneumatic automatic centering internal cooling clamp device has the following beneficial effects: the invention can solve a plurality of difficulties in processing small-diameter tubular parts, changes the traditional internal cooling direction of the cutter into the internal cooling direction of the clamp, sprays cooling liquid from bottom to top, does not limit the selection of processing cutters, and is beneficial to the control of processing cost; when the cutter cuts in the through hole, the cutter can be precisely cooled and lubricated to timely discharge chips, and simultaneously, the type, pressure, time and the like of the cooling liquid can be controlled to meet various requirements of the micro inner hole wall, such as smoothness, color, cutting lines and the like; the pull core in the elastic clamp is connected with the piston, and the locking ring is sleeved outside the elastic clamp and matched with the elastic clamp through the conical surface, so that the tubular workpiece can be clamped and positioned with high precision.
Drawings
For a clearer description of an embodiment of the invention or of a technical solution in the prior art, the drawings that are needed in the description of the embodiment or of the prior art will be briefly described, it being obvious that the drawings in the description below are only embodiments of the invention, and that other drawings can be obtained, without inventive effort, by a person skilled in the art from the drawings provided:
FIG. 1 is a schematic structural view of a pneumatically self-centering internal cooling fixture device of the present invention;
FIG. 2 is a partial cross-sectional view of a pneumatically self-centering internal cooling fixture device of the present invention;
FIG. 3 is a longitudinal cross-sectional view of the pneumatically self-centering internal cooling fixture device of the present invention;
FIG. 4 is an enlarged view of the suction nozzle portion of the longitudinal cross-sectional view of the pneumatically self-centering internal cooling fixture device of the present invention;
fig. 5 is an enlarged view of the piston portion of the longitudinal cross-sectional view of the pneumatically self-centering internal cooling fixture device of the present invention.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Exemplary embodiments of the present invention are illustrated in the accompanying drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, and not limited to the technical solutions of the present application, and the embodiments of the present invention and the technical features in the embodiments may be combined with each other without conflict.
Referring to fig. 1 to 5, the pneumatic automatic centering internal cooling fixture device of the present embodiment is suitable for processing a micro through hole, and includes three parts, namely: and the power source cylinder part, the clamp positioning and locking part and the cooling liquid spraying part are used for cooling. The power source cylinder part, namely the cylinder mechanism, specifically comprises a cylinder bottom plate 1, a cylinder body 2, a large bolt 3, a small bolt 5, a bottom plate sealing ring 8, an air pipe interface 9, a piston 11, a large sealing ring 12 and a small sealing ring 13. The clamp positioning and locking part comprises a fixed seat 14, a pressing block 15, a locking bolt 18, an elastic clamp 21, a pull core 22, a pull rod 23 and a locking ring opening 24. The cooling nozzle portion includes a nozzle 26, a nozzle interface 27, a cooling tube 28, a retaining nut 30, and the cooling fluid is typically oil.
The cylinder bottom plate 1 is a circular horizontal plate, two large mounting holes are formed in the circular horizontal plate, and two large bolts 3 are screwed into the mounting holes of the cylinder bottom plate 1 from top to bottom and continuously screwed into the machine tool, so that the whole fixture is mounted and fixed on the machine tool. Three small mounting holes are formed in the cylinder bottom plate 1 and are used for being assembled and connected with the cylinder body 2 by using small bolts 5.
The cylinder body 2 is a cylinder body with an open bottom, the annular bottom of the cylinder body 2 is provided with three threaded holes, the cylinder body is fixed on the cylinder bottom plate 1 through three bolts 5, and the bolts 5 are screwed from the bottom of the cylinder bottom plate 1 to penetrate through the cylinder bottom plate 1 and then are in threaded connection with the annular bottom of the cylinder body 2. Seal grooves are formed in annular contact surface areas of the cylinder body 2 and the cylinder bottom plate 1, and bottom plate seal rings 8 are arranged in the seal grooves of the cylinder body 2 and the cylinder bottom plate 1 so as to seal the cylinder body 2 and the cylinder bottom plate 1 and prevent air leakage between the bottom plate 1 and the cylinder body 2. The cylinder body 2 is provided with two air holes of air inlet and air outlet on the cylinder side wall, the two air holes are distributed up and down and are respectively provided with two air pipe interfaces 9. The top of the cylinder body 2 is provided with a piston hole for high-precision matching with the piston 11, and in order to prevent air leakage at the top of the cylinder body 2, the piston hole of the cylinder body 2 is internally provided with a small sealing groove for installing a small sealing ring 13. The top of the cylinder body 2 is also provided with an outer circular boss along the upper edge of the piston hole in an outward protruding way, and an inner circular boss along the lower edge of the piston hole in an inward protruding way, and the piston 11 passes through the inner circular boss and the outer circular boss and then extends out to be in threaded connection with the elastic clamp 21. The fixing seat 14 is arranged outside an outer circular boss at the top of the cylinder body 2, and three threaded holes are formed at the top of the cylinder body 2 and used for installing the locking fixing seat 14.
The piston 11 moves up and down in the cylinder 2 under the pressure force of air inlet and air outlet of the air pipe interface 9. Two sealing grooves are arranged on the piston 11 and are used for installing a large sealing ring 12, so that the piston can be prevented from leaking gas in the cylinder body in the up-and-down movement process. Specifically, the piston 11 includes a cylindrical portion and a disc portion formed by extending radially from the outer peripheral wall of the cylindrical portion, the annular side edge of the disc portion is provided with a large seal groove, and a large seal ring 12 is disposed in the large seal groove, so that the space between the disc portion and the cylindrical side wall of the cylinder body 2 can be sealed by the large seal ring 12, thereby preventing air leakage when the piston 11 moves up and down. The cylindrical portion passes through the piston hole and then protrudes to be in threaded connection with the elastic clamp 21, and because the small sealing groove of the piston hole is provided with the small sealing ring 13, the cylindrical portion and the piston hole are sealed by the small sealing ring 13, so that the top of the piston 11 is prevented from leaking.
The lower part of the inner hole of the fixing seat 14 is sleeved outside the outer circular boss at the top of the cylinder body 2, and the upper part of the inner hole of the fixing seat 14 is provided with internal threads for being assembled with external threads at the bottom of the elastic clamp 21.
The pressing block 15 is used for pressing and installing the fixing seat 14 on the cylinder body 2 and is locked through the locking bolt 18. Specifically, three pressing blocks 15 are uniformly distributed around the fixing seat 14, and the three pressing blocks 15 are locked with three screw holes at the top of the cylinder body 2 through bolts 18. The fixing seat 14 is approximately cylindrical, the outer edge of the bottom of the fixing seat protrudes radially to form a flange, the pressing blocks 15 are sector blocks, the bottom of the pressing blocks forms steps matched with the flange, and the steps of the pressing blocks 15 press the flange to jointly fix the fixing seat 14.
Wherein the elastic clamp 21 is vertically arranged and can be folded and rebounded in the horizontal radial direction. Specifically, the elastic clamp 21 is divided into a main body portion, a transition portion and a connection portion from top to bottom along the length direction thereof, the outer diameter dimension of the connection portion is smaller than the outer diameter dimension of the main body portion, and the outer ring of the transition portion is a conical surface. The connecting part is provided with external threads which are inserted into the inner hole of the fixed seat 14 and are in threaded fit with the same. The top opening of the fixing seat 14 is tapered, the lower section of the transition portion is inserted into the top opening of the fixing seat 14 and is matched with the tapered surface of the fixing seat 14, and the upper section of the transition portion is exposed out of the fixing seat 14. The elastic clamp 21 has an elastic groove therein, and the elastic groove extends from a top end surface of the elastic clamp 21 in an axial direction of the elastic clamp 21, passes through the main body portion, and then continues to extend to an upper section of the transition portion. The radial cross section of elastic fixture 21 is star-shaped structure in the elastic tank, the center of star-shaped structure with elastic fixture 21 center coincidence, the elastic tank will the main part is cut apart into around the multishell grip block of elastic fixture 21 center distribution, and multishell grip block encloses to form and is used for inserting tubular work piece 25's centre gripping hole, be formed with annular flange in the centre gripping hole, tubular work piece 25 inserts in the centre gripping hole back the terminal surface of tubular work piece 25 pushes up on annular flange.
Wherein, the locking ring opening 24 is sleeved outside the elastic clamp 21 and is matched with the elastic clamp through a conical surface. Specifically, the locking ring opening 24 is sleeved outside the main body of the elastic clamp 21, the locking ring opening 24 has a substantially annular structure, an inner ring is provided with an inner tapered hole, and an outer ring of the main body of the elastic clamp 21 has an outer tapered surface that is attached to the inner tapered hole of the locking ring opening 24.
The pull rod 23 passes through the elastic clamp 21 in a non-contact manner and is connected with the pull core 22 and the locking ring opening 24. Specifically, the pull core 22 is divided into an upper section and a lower section, the radial dimension of the upper section is greater than that of the lower section, the lower section of the pull core 22 is provided with an external thread for being in threaded connection with the piston 11, the upper section of the pull core 22 is provided with a first pull rod hole matched with the outer diameter of the pull rod 23 along the radial direction, the locking ring opening 24 is provided with two second pull rod holes opposite to the two ends of the first pull rod hole at the same height position as the first pull rod hole, the two ends of the pull rod 23 are locked by nuts after passing through the first pull rod hole and the two second pull rod holes, so that the pull core 22 and the ring opening 24 are locked and fixed, the elastic clamp 21 is provided with two strip holes in a penetrating manner at the positions facing the two second pull rod holes, the length of the strip holes in the axial direction of the elastic clamp 21 is greater than the upper and lower strokes of the pull core 22, and the pull rod 23 passes through the strip holes in a non-contact manner. The piston 11 can move up and down by pulling the locking ring opening 24 through the pull core 22, and the elastic clamp 21 is folded or rebounded to be spread when the locking ring opening 24 moves up and down to adapt to and clamp the tubular workpieces 25 with different sizes.
Wherein the nozzle 26 is inserted into the elastic jig 21 and is located right under the tubular workpiece 25 with the opening 261 of the nozzle 26 to spray the cooling liquid from the bottom up through the tubular workpiece 25 to the tool. The locking ring opening 24 is sleeved outside the main body part, and the sleeved position is lower than the position where the nozzle 26 is inserted into the elastic clamp 21.
The nozzle 26 is connected with the elastic clamp 21 through threads, and the nozzle 26 is inserted into the elastic clamp 21 in a threaded fit manner along the horizontal radial direction. Specifically, the elastic clamp 21 includes an internal threaded hole along the radial direction, the nozzle 26 is divided into two ends, and the whole nozzle 26 is hollow for cooling oil spraying. The large end of the nozzle 26 is provided with an internal thread, one end of the nozzle interface 27 is provided with an external thread to be matched with the internal thread of the large end of the nozzle 26, the other end of the nozzle interface 27 is sleeved with one end of the cooling pipe 28, and the other end of the cooling pipe 28 is connected with an oil outlet of the equipment through an interface, so that the output of sprayed cooling liquid is realized. The small end of the nozzle 26 is provided with an external thread for fitting in an internally threaded hole of the elastic clamp 21. The nozzle 26 is screwed with the elastic clamp 21 and then locked by a fixing nut 30. The small end of the nozzle 26 is further provided with the opening 261 on the circumferential side wall, the small end of the nozzle 26 extends in the elastic clamp 21 along the radial direction of the elastic clamp 21 and passes over the center line of the elastic clamp 21, the opening 261 faces upwards to the inner hole of the tubular workpiece 25, and the center line of the opening 261 is substantially coincident with the center line of the clamping hole of the elastic clamp 21.
Principle of spraying cooling liquid: during machining, the cutter 31 enters from the upper part of the inner hole of the tubular workpiece 25 for machining, and the inner cooling nozzle 26 is arranged on the elastic clamp 21, so that cooling liquid can be sprayed to the inner hole of the tubular workpiece 25 from bottom to top, the cutter 31 and the tubular workpiece 25 can be precisely cooled inwards, and the defect of insufficient cooling during machining of the small-diameter inner hole in the traditional machining is overcome. Meanwhile, the small-diameter inner hole is machined, and the inner cooling design cannot be adopted on the machining tool 31 due to the small diameter of the machining tool 31, so that the cooling is seriously insufficient during the machining of the small-diameter inner hole, and the cooling nozzle design is particularly difficult during the machining of the small-diameter deep hole, so that the problems of through hole parts and cooling lubrication during the machining of the inner hole are well solved.
The clamp locking principle of the embodiment is as follows: the compressed air is used as a power source, the potential energy of the compressed air is converted into mechanical energy by the air cylinder, the up-and-down reciprocating motion of the air cylinder piston 11 is realized, the up-and-down reciprocating motion force of the air cylinder piston 11 is transmitted to the pull core 22 and the pull rod 23, and the locking ring opening 24 is driven to move up and down. The inner conical surface of the inner ring of the locking ring opening 24 is attached to the outer conical surface of the elastic clamp 21, the elastic clamp 21 is driven to elastically deform by the up-and-down movement of the locking ring opening 24 by utilizing the advantage of high centering of taper fit, the elastic clamp 21 is contracted and rebounded, and finally, the tubular workpiece 25 is loosened and locked with high precision and repeated positioning precision is high.
In summary, the pneumatic automatic centering internal cooling clamp device has the following beneficial effects: the invention can solve a plurality of difficulties in processing small-diameter tubular parts, changes the traditional internal cooling direction of the cutter into the internal cooling direction of the clamp, sprays cooling liquid from bottom to top, does not limit the selection of processing cutters, and is beneficial to the control of processing cost; when the cutter cuts in the through hole, the cutter can be precisely cooled and lubricated to timely discharge chips, and simultaneously, the type, pressure, time and the like of the cooling liquid can be controlled to meet various requirements of the micro inner hole wall, such as smoothness, color, cutting lines and the like; the pull core in the elastic clamp is connected with the piston, and the locking ring is sleeved outside the elastic clamp and matched with the elastic clamp through the conical surface, so that the high-precision clamping and positioning of the tubular workpiece can be performed, and the repeated positioning precision can be within 0.01 mm.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The terms including ordinal numbers such as "first", "second", and the like used in the present specification may be used to describe various constituent elements, but these constituent elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first component may be termed a second component, and, similarly, a second component may be termed a first component, without departing from the scope of the present invention.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.

Claims (10)

1. The pneumatic automatic centering internal cooling clamp device is suitable for processing tiny through holes, and is characterized by comprising a cylinder mechanism, an elastic clamp (21), a locking ring opening (24), a pull core (22), a pull rod (23) and a nozzle (26) connected with a cooling pipe (28), wherein the elastic clamp (21) is vertically arranged in the elastic clamp (21) and is connected with the piston (11), the locking ring opening (24) is sleeved outside the elastic clamp (21) and matched with the elastic clamp through a conical surface, the pull rod (23) passes through the elastic clamp (21) in a non-contact mode and is connected with the locking ring opening (24), the piston (11) can move up and down through the pulling of the locking ring opening (24) by the pulling of the pull core (22) through up and down movement, the elastic clamp (21) is suitable for clamping workpieces with different sizes when the locking ring opening (24) moves up and down or is folded and unfolded and folded and unfolded, the nozzle (26) is inserted into the elastic clamp (21) and is located right below the tubular workpiece (25) with an opening (261) of the nozzle (26) to spray cooling liquid from bottom to top through the tubular workpiece (25) to a cutter (31).
2. A pneumatic self-centering internal cooling clamp device according to claim 1, characterized in that the nozzle (26) is screwed with the elastic clamp (21), the nozzle (26) being inserted into the elastic clamp (21) in a horizontal radial direction by means of a screw-fit.
3. The pneumatic self-centering internal cooling clamp device according to claim 2, wherein the inside of the elastic clamp (21) comprises an internal threaded hole arranged along the radial direction of the elastic clamp, the inside of the nozzle (26) is of a hollow structure, the large end of the nozzle (26) is used for being connected with the cooling pipe (28), the small end of the nozzle (26) is provided with external threads for being installed in the internal threaded hole of the elastic clamp (21), the nozzle (26) is locked by a fixing nut (30) after being connected with the elastic clamp (21) in a threaded manner, the small end of the nozzle (26) is further provided with the opening (261) on the circumferential side wall, the small end of the nozzle (26) extends in the radial direction of the elastic clamp (21) in the elastic clamp (21) and passes through the central line of the elastic clamp (21), and the opening (261) faces upwards to the inner hole of the tubular workpiece (25).
4. The pneumatic automatic centering internal cooling clamp device according to claim 1, wherein the radial dimension of the upper section of the pull core (22) is larger than the radial dimension of the lower section, the lower section of the pull core (22) is provided with an external thread for being in threaded connection with the piston (11), the upper section of the pull core (22) is provided with a first pull rod hole matched with the outer diameter of the pull rod (23) along the radial direction, the locking ring opening (24) is provided with two second pull rod holes opposite to the two ends of the first pull rod hole at the same height position as the first pull rod hole, the pull rod (23) penetrates through the first pull rod hole and the two second pull rod holes to lock and fix the pull core (22) and the locking ring opening (24), the elastic clamp (21) is provided with two strip-shaped holes in a penetrating mode at the positions facing the two second pull rod holes, the length of the strip-shaped holes in the axial direction of the elastic clamp (21) is larger than the upper and lower parts of the pull core (22), and the pull rod (23) penetrates through the strip-shaped holes in a non-contact mode.
5. The pneumatic self-centering internal cooling clamp device according to claim 1, wherein an inner ring of the locking ring opening (24) is provided with an inner conical hole, and an outer ring of the elastic clamp (21) is provided with an outer conical surface which is attached to the inner conical hole of the locking ring opening (24).
6. The pneumatic self-centering internal cooling clamp device according to claim 1, further comprising a fixed seat (14), wherein the elastic clamp (21) comprises a main body part and a connecting part from top to bottom along the length direction thereof, the locking ring opening (24) is sleeved outside the main body part, and the sleeved position is lower than the position of the nozzle (26) inserted into the elastic clamp (21);
the cylinder mechanism further comprises a cylinder body (2), a piston hole is formed in the top of the cylinder body (2), an outer circular boss protrudes out of the piston hole, a piston (11) is arranged in the cylinder body (2) and protrudes out of the piston hole and the outer circular boss and then is in threaded connection with the pull core (22), a fixing seat (14) is fixed on the cylinder body (2) and is sleeved outside the outer circular boss, and a connecting portion is inserted into the fixing seat (14) and is in threaded fit with the fixing seat.
7. The air-operated self-centering internal cooling clamp device according to claim 6, wherein an elastic groove is formed in the elastic clamp (21), the elastic groove extends from the top end surface of the elastic clamp (21) along the axial direction of the elastic clamp (21) to penetrate through the main body part, the elastic groove is in a star-shaped structure on the radial cross section of the elastic clamp (21), the center of the star-shaped structure coincides with the center of the elastic clamp (21), the main body part is divided into multi-flap clamping blocks distributed around the center of the elastic clamp (21) by the elastic groove, the multi-flap clamping blocks enclose a clamping hole for inserting the tubular workpiece (25), the clamping hole comprises an annular flange, and the end surface of the tubular workpiece (25) abuts against the annular flange after the tubular workpiece (25) is inserted into the clamping hole.
8. The pneumatic self-centering internal cooling clamp device according to claim 7, wherein the elastic clamp (21) further comprises a transition part connected between the main body part and the connecting part, the outer diameter of the connecting part is smaller than that of the main body part, the outer ring of the transition part is a conical surface, the top opening of the fixing seat (14) is conical, the lower section of the transition part is inserted into the top opening of the fixing seat (14) and matched with the conical surface, and the axial direction of the elastic clamp (21) extends to the upper section of the transition part.
9. The pneumatic self-centering internal cooling clamp device according to claim 6, wherein the cylinder body (2) is in a cylinder shape with an open bottom, the cylinder side wall of the cylinder body (2) is connected with two air pipe interfaces (9, 10), the bottom of the cylinder body (2) is fixed on a cylinder bottom plate (1) through bolts, sealing grooves are formed on contact surfaces of the cylinder body (2) and the cylinder bottom plate (1), and a bottom plate sealing ring (8) is arranged in the sealing grooves of the cylinder body (2) and the cylinder bottom plate (1) so as to realize the sealing of the cylinder body (2) and the cylinder bottom plate (1);
the piston (11) comprises a cylindrical part and a disc part formed by extending radially from the peripheral wall of the cylindrical part, the disc part is sealed with the barrel-shaped side wall of the cylinder body (2) through a large sealing ring (12), and the cylindrical part is sealed with the piston hole through a small sealing ring (13).
10. The pneumatic self-centering internal cooling fixture device according to claim 6, further comprising a plurality of pressing blocks (15) distributed around the fixed seat (14), wherein the pressing blocks (15) are locked with the top of the cylinder body (2) through bolts, the outer edge of the bottom of the fixed seat (14) protrudes radially to form a flange, the pressing blocks (15) are fan-shaped blocks, the bottom of each pressing block is provided with a step matched with the flange, and the steps of the pressing blocks (15) are pressed on the flange to jointly fix the fixed seat (14).
CN202311243127.1A 2023-09-25 2023-09-25 Pneumatic automatic centering internal cooling clamp device Pending CN117300691A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311243127.1A CN117300691A (en) 2023-09-25 2023-09-25 Pneumatic automatic centering internal cooling clamp device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311243127.1A CN117300691A (en) 2023-09-25 2023-09-25 Pneumatic automatic centering internal cooling clamp device

Publications (1)

Publication Number Publication Date
CN117300691A true CN117300691A (en) 2023-12-29

Family

ID=89273106

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311243127.1A Pending CN117300691A (en) 2023-09-25 2023-09-25 Pneumatic automatic centering internal cooling clamp device

Country Status (1)

Country Link
CN (1) CN117300691A (en)

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