CN115971928A - Workpiece clamping device of numerical control lathe - Google Patents
Workpiece clamping device of numerical control lathe Download PDFInfo
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- CN115971928A CN115971928A CN202310256222.9A CN202310256222A CN115971928A CN 115971928 A CN115971928 A CN 115971928A CN 202310256222 A CN202310256222 A CN 202310256222A CN 115971928 A CN115971928 A CN 115971928A
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- 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
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Abstract
The invention discloses a workpiece clamping device of a numerical control lathe, which comprises a clamp, a clamping device and a clamping device, wherein the clamp comprises a base and an extrusion part; the base is positioned on the machine tool and comprises a bottom plate and a first abutting part; one end, close to the cutter, of the bottom plate extends upwards to form a first abutting part, the first abutting part comprises a semicircular ring and is used for abutting against one axial side face of the metal ring, and the semicircular ring of the first abutting part is coaxial with the metal ring; the extrusion part comprises a sliding seat and a second interference part; the sliding seat is connected with the bottom plate in a sliding mode, and the moving direction of the sliding seat on the bottom plate is parallel to the axis of the semicircular ring of the first abutting part; one end of the sliding seat, which is close to the first abutting part, extends upwards to form a second abutting part, the shape and the size of the second abutting part are the same as those of the first abutting part, and the axes of the second abutting part and the first abutting part are overlapped; the second interference part moves along with the sliding seat and can be matched with the first interference part to clamp the metal ring. The clamping tool can stably clamp and avoid the deformation of the metal ring.
Description
Technical Field
The invention relates to a clamping and fastening device for a machine tool in the processing of an annular metal workpiece, in particular to a clamping and fastening device for an annular metal piece.
Background
In the processing process of the metal ring, the inner ring surface needs to be renovated, so that the inner ring surface is flat and the axis is continuous. The existing clamping tool is used for three-point clamping, force application points are dispersed, and in order to ensure that the position of a metal ring is stable, pressure is easy to be overlarge, so that the metal ring is deformed, and defective work or waste products are caused. As shown in fig. 1-2, in order to maintain stability of the three-point clamping, the metal ring is recessed at the clamping point, and even if the metal ring is elastically recessed, the recoverable deformation can also cause reduction of the machining precision.
Disclosure of Invention
This application aim at provides a numerical control lathe work piece chucking device, solves the defect of three point clamping among the prior art, makes the centre gripping more stable, avoids the becket to improve the machining precision at deformation.
The embodiment of the application provides a workpiece clamping device of a numerical control lathe, which comprises a clamp and a cutter, wherein the clamp is used for clamping a metal ring, the cutter is used for trimming the inner ring surface of the metal,
the fixture comprises a base and an extrusion part;
the base is positioned on the machine tool and comprises a bottom plate and a first abutting part;
one end, close to the cutter, of the bottom plate extends upwards to form a first abutting part, the first abutting part comprises a semicircular ring and is used for abutting against one axial side face of the metal ring, and when one axial side face of the metal ring abuts against and is attached to the vertical face of the first abutting part, the semicircular ring of the first abutting part is coaxial with the metal ring;
the extrusion part comprises a sliding seat and a second interference part;
the sliding seat is connected with the bottom plate in a sliding mode, and the moving direction of the sliding seat on the bottom plate is parallel to the axis of the semicircular ring of the first abutting part;
one end of the sliding seat, which is close to the first abutting part, extends upwards to form a second abutting part, the shape and the size of the second abutting part are the same as those of the first abutting part, and the axes of the second abutting part and the first abutting part are overlapped; the second abutting part moves along with the sliding seat and can be matched with the first abutting part to clamp the metal ring;
the bottom plate is provided with a cylindrical surface groove which is inwards concave, the axis of the cylindrical surface is parallel to the axis of the first abutting part, and the diameter of the cylindrical surface is the same as the outer diameter of the metal ring;
the diameters of the inner ring surfaces of the first interference part and the second interference part are larger than the inner diameter of the inner ring surface of the metal ring;
the sliding seat is powered by hydraulic pressure.
Further, the cutter is a boring cutter or a cutting cutter.
Furthermore, the device also comprises an inner ring positioning component;
the inner ring positioning assembly comprises a positioning rod, a deformation supporting part and a medium charging and discharging device;
the sliding seat is provided with a positioning block on one side of the second abutting part far away from the first abutting part;
the section of the positioning rod is rectangular, the positioning rod is in sliding fit with the positioning block, the positioning rod moves linearly on the positioning block, and the moving direction is parallel to the axis of the semicircular ring of the first abutting part;
the deformation support includes a first bladder;
the first bladder is positioned on the positioning rod; the positioning rod is provided with an inner tube, and the inner tube is used for a medium replaying channel of the first sac;
the first bag can be expanded to abut against the inner ring surface of the metal ring, and the metal ring can be kept in place after the first abutting part and the second abutting part are separated from the metal ring;
the medium charging and discharging device charges and discharges a medium to the first bag through the inner pipe;
the base is detachably and fixedly connected with the machine tool.
Further, the first bag is a cylindrical bag, the medium is air or liquid, and the first bag is communicated with a pump of the medium charging and discharging device through an inner pipe.
Furthermore, the device also comprises a support body, wherein the support body is used for supporting the first bag and is used as an abutting surface of the first bag, so that a positioning foundation is formed when the first bag applies pressure to the inner ring surface of the metal ring.
Furthermore, the supporting body comprises a hard cylinder, the cylinder is sleeved and fixed outside the positioning rod through a supporting rod, the first bag is sleeved outside the cylinder, and the axis of the cylinder is coaxial with the metal ring.
Further, the deformation support part also comprises a support body;
the first bag is a cylindrical bag and is sleeved outside the positioning rod;
the supporting body comprises a pipe body, a plunger and a pressed body; a plurality of tube bodies are arranged, one end of each tube body is fixed on the first bag, the opening of the other end of each tube body points to the positioning rod, and the axis of each tube body passes through the positioning rod; at least eight tube bodies are correspondingly arranged at the same axial position of the positioning rod; the tube bodies corresponding to the same axial position of the positioning rod form a group; the support body comprises one or more groups of tube bodies;
a plunger is inserted in each tube body, and the outer diameter of the plunger is smaller than the inner diameter of the tube body; the length of the plunger is greater than that of the pipe body;
the pipe body is provided with an opening at one end close to the first bag, and the pressure body is fixed on the first bag and is positioned in the opening end of the pipe body close to the first bag;
the plunger is empty surplus end and a second bag outer wall fixed connection, outside the second bag cover set position pole, the second bag is coaxial with first bag, can exert pressure to the plunger after the inflation, the second bag passes through the second inner tube in the locating lever and communicates with the pump among the medium charge-discharge device.
Furthermore, the deformation supporting part also comprises a metal disc which is annular, and the pipe body is a through hole from the inner annular surface to the outer wall of the metal disc;
the first bag is sleeved outside the metal disc, and the inner pipe penetrates through the metal disc to be communicated with the first bag;
the pressurized body is pressed by the plunger to make the inner wall and the outer wall of the first capsule fit together, and then the pressurized body can apply pressure to the metal ring.
Furthermore, a plurality of inner supporting bodies are uniformly distributed and hinged on the inner side surface of the inner side wall of the first bag, each inner supporting body comprises an arc-shaped metal sheet, and paraffin is filled in the first bag; the magnet is fixed on the inner side surface of the outer side wall of the first capsule corresponding to the protruding direction of the protruding arc-shaped surface of the arc-shaped metal sheet; the arc-shaped metal sheet is made of ferromagnetic material.
Furthermore, a plurality of iron balls which are penetrated and arranged by the pull rope are fixed on the inner side surface of the opening of the arc-shaped metal sheet, and magnetized iron wires are dispersed in the paraffin.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: through changing the centre gripping mode from radial centre gripping into the axial centre gripping, avoid the too big deformation that leads to the becket of centre gripping dynamics, and the centre gripping is stable, the easy operation of centre gripping, efficiency is higher.
Drawings
FIG. 1 is a schematic illustration of a three-point clamping arrangement of the prior art;
FIG. 2 is a schematic illustration of a prior art three-point clamp resulting in deformation of a metallic ring;
FIG. 3 is a schematic structural diagram of the present application;
FIG. 4 is a schematic view of the first and second interference portions clamping the metal ring;
FIG. 5 is a right side view of FIG. 4;
FIG. 6 is a schematic view of the structure when a first balloon support metal ring is utilized;
FIG. 7 is a schematic view of the base removed;
FIG. 8 is a schematic view of the first bladder in the deformable support portion abutting the inner circumferential surface of the eyelet;
FIG. 9 is a schematic view of the deformable support with the support;
FIG. 10 is a schematic cross-sectional view of the support body being a cylindrical tube and formed with a first bladder abutting the retaining eyelet;
FIG. 11 is a schematic view of the support body being a combination of a tube and a plunger;
FIG. 12 is a schematic view of the tube body being a through hole in a metal plate;
FIG. 13 is a schematic view of the first bladder of FIG. 12 shown inflated;
FIG. 14 is a schematic view of the first balloon with an inner support;
fig. 15 is a partially enlarged schematic view of fig. 14.
In the figure, the fixture 100, the base 110, the bottom plate 111, the first abutting portion 112, the pressing portion 120, the sliding seat 121, the second abutting portion 122, and the positioning block 123;
a metal ring 200;
a cutter 300, a boring cutter 310, a cutting cutter 320;
the inner ring positioning assembly 400, the positioning rod 410, the inner tube 411, the deformation supporting part 420, the supporting body 421, the first bag 422, the second bag 4221 and the metal disc 423; a medium charging and discharging device 430, a mounting block 431, and a pump 432;
a tube 4211, a plunger 4212, a pressure body 4213; inner support body 424, arc-shaped metal sheet 4241, paste ball 4242, iron wire 4243 and magnet 4244.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the 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 will be understood that when an element is referred to as being "secured 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," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
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. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Through follow radial centre gripping to the centre gripping mode, change into axial centre gripping, avoid the too big deformation that leads to becket 200 of centre gripping dynamics, and the centre gripping is stable, the easy operation of centre gripping, efficiency is higher.
Example one
A workpiece clamping device of a numerical control lathe comprises a fixture 100 and a cutter 300, wherein the fixture 100 is used for clamping a metal ring 200, the cutter 300 is used for trimming the inner ring surface of the metal,
the jig 100 includes a base 110 and a pressing portion 120;
the base 110 is positioned on a machine tool, and the base 110 comprises a bottom plate 111 and a first interference part 112;
one end of the bottom plate 111, which is close to the cutter 300, extends upwards to form a first abutting portion 112, the first abutting portion 112 comprises a semicircular ring, and the semicircular ring is used for abutting against one axial side face of the metal ring 200, and when one axial side face of the metal ring 200 abuts against and is attached to the vertical face of the first abutting portion 112, the semicircular ring of the first abutting portion 112 is coaxial with the metal ring 200;
the pressing part 120 comprises a sliding seat 121 and a second interference part 122;
the sliding seat 121 is connected with the bottom plate 111 in a sliding manner, and the moving direction of the sliding seat 121 on the bottom plate 111 is parallel to the semicircular axis of the first abutting part 112;
one end of the sliding seat 121 close to the first abutting portion 112 extends upwards to form a second abutting portion 122, the shape and size of the second abutting portion 122 are the same as those of the first abutting portion 112, and the axes of the second abutting portion 122 are overlapped; the second abutting portion 122 moves along with the sliding seat 121 and can be matched with the first abutting portion 112 to clamp the metal ring 200;
the bottom plate 111 is provided with a cylindrical surface groove which is inwards concave, the axis of the cylindrical surface is parallel to the axis of the first abutting part 112, and the diameter of the cylindrical surface is the same as the outer diameter of the metal ring 200;
the diameters of the inner annular surfaces of the first interference part 112 and the second interference part 122 are larger than the inner diameter of the inner annular surface of the metal ring 200;
the slide shoe 121 is hydraulically powered.
The tool 300 is a boring cutter 310 or a cutting cutter 320.
When the metal ring pressing device is used, the pressing part 120 is pushed through a hydraulic device, so that the second abutting part 121 abuts against and presses the end face of the metal ring 200. And because the diameters of the inner annular surfaces of the first interference portion 112 and the second interference portion 122 are larger than the inner diameter of the inner annular surface of the metal ring 200; when the first and second abutting portions extrude the metal ring, the boring cutter can extend into the metal ring 200, so that the operation of quick trimming is facilitated.
The mode of clamping the axial end face does not cause the deformation of the metal ring, and the clamping is stable, thereby being convenient for operations such as rapid cutting, polishing and the like.
Example two
After the inner ring surface of the metal ring is repaired, in order to ensure that the contact ratio of the axis of the outer ring surface and the axis of the inner ring surface is higher, the cutter and the fixture can preferably keep the original position relation, and then the outer ring surface is repaired, so that the inner ring surface and the outer ring surface are repaired by using the same machine tool, and the positions of the cutter and the fixture are not corrected, so that the contact ratio of the axis of the inner ring surface and the axis of the outer ring surface can be better ensured. Thus, a further improvement is made, as shown in FIGS. 6-8.
Also included is an inner race positioning assembly 400;
the inner ring positioning assembly 400 includes a positioning rod 410, a deformation support part 420, and a medium charge and discharge device 430;
the sliding seat 121 has a positioning block 123 on a side of the second abutting portion 122 away from the first abutting portion 112;
the section of the positioning rod 410 is rectangular, the positioning rod 410 is in sliding fit with the positioning block 123, the positioning rod 410 moves linearly on the positioning block 123, and the moving direction is parallel to the axis of the semicircular ring of the first abutting part 112;
the deformation support 420 includes a first bladder 422;
the first balloon 422 is positioned on the positioning rod 410; the positioning stem 410 carries an inner tube 411 for the media replay channel of the first balloon 422;
the first bladder 422 expands to abut the inner annular surface of the metal ring, allowing the metal ring 200 to remain in place after the first and second abutting portions 112 and 122 are disengaged from the metal ring;
the medium charging and discharging device 430 charges and discharges the medium to the first bag 422 through the inner pipe 411;
the base 110 is detachably and fixedly connected with a machine tool.
The first bag 422 is a cylindrical bag, and the medium is air or liquid, and is communicated with a pump 432 of the medium charging and discharging device 430 through the inner tube 411.
The support 421 is further included, and the support 421 is used for supporting the first bladder 422 and serves as an interference surface of the first bladder 422, so that there is a positioning base when the first bladder 422 applies pressure to the inner annular surface of the metal ring 200.
The supporting body 421 comprises a hard cylinder, the cylinder is fixed outside the positioning rod 410 through a supporting rod in a sleeved mode, the first bag 422 is sleeved outside the cylinder, and the axis of the cylinder is coaxial with the metal ring 200. As shown in fig. 9-10.
EXAMPLE III
The pressure of the cylindrical first capsule on all positions of the inner wall of the metal ring 200 is kept basically consistent, so that the metal ring can be stably positioned. However, if there is a large amount of cutting on the outer surface of the metal ring 200, the cutter applies a force to the metal ring directed into the metal ring, so that the metal ring 200 may be momentarily displaced. In addition, when the tangential force of the metal ring is greater than the static friction force between the inner wall of the metal ring and the outer wall of the first bag, the metal ring can rotate, and the correction efficiency is reduced. Thus, the support body is further modified as shown in FIGS. 11-13.
The deformation supporting part 420 further includes a supporting body 421;
the first bag 422 is a cylindrical bag and is sleeved outside the positioning rod 410;
the support body 421 comprises a tube 4211, a plunger 4212 and a pressure body 4213; a plurality of tube bodies 4211 are provided, one end of each tube body 4211 is fixed on the first bag 422, the opening of the other end of each tube body 4211 points to the positioning rod 410, and the axis of each tube body 4211 passes through the positioning rod 410; at least eight tube bodies 4211 are correspondingly arranged at the same axial position of the positioning rod 410; the tube bodies corresponding to the same axial position of the positioning rod 410 are in one group; the support 421 includes one or more sets of tubes 4211;
each tube 4211 is internally inserted with a plunger 4212, and the outer diameter of the plunger 4212 is smaller than the inner diameter of the tube 4211; the length of the plunger 4212 is greater than that of the tube 4211;
the tube 4211 is open at an end adjacent to the first bladder 422, and the pressure body 4213 is secured to the first bladder 422 and positioned within the tube 4211 at an open end adjacent to the first bladder 422;
the spare end of the plunger 4212 is fixedly connected with the outer wall of a second bag 4221, the second bag 4221 is sleeved outside the positioning rod 410, the second bag 4221 is coaxial with the first bag 422 and can uniformly apply pressure to the plunger 4212 after being expanded, and the second bag 4221 is communicated with the pump 432 in the medium inflation and deflation device 430 through a second inner tube in the positioning rod 410.
When the pressure-bearing ring is used, the second bag 4221 is inflated through the second inner tube in the positioning rod 410, so that the plunger 4212 pushes the pressure-bearing body 4213 against the inner wall of the metal ring, and then the first bag 422 expands to press against the inner wall of the metal ring 200 in a pressure equalizing mode. And the internal pressure of the second bag 4221 is higher than that of the first bag 422, so that the pressed body forms uniformly distributed pressed points on the inner wall of the metal ring 200, and the static friction force required by the rotation of the metal ring is improved. And through the support of plunger, can avoid the becket atress vibrations, improve the machining precision.
The deformation support part 420 further comprises a metal disc 423, the metal disc 423 is annular, and the pipe body 4211 is a through hole from the inner annular surface to the outer wall of the metal disc 423;
the first bag 422 is sleeved outside the metal disc 423, and the inner pipe 411 passes through the metal disc to be communicated with the first bag 422;
the pressure receiving body 4213 is abutted by the plunger 4212, so that the inner wall and the outer wall of the first bag 422 can be attached, and the pressure receiving body 4213 can apply pressure to the metal ring 200.
As shown in fig. 12-13, the metal plate 423 can provide a more stable force-applying interference surface and the metal ring can be positioned more stably.
A plurality of inner supporting bodies 424 are uniformly distributed and hinged on the inner side surface of the inner side wall of the first bag 422, each inner supporting body 424 comprises an arc-shaped metal sheet 4241, and paraffin is filled in the first bag 422; the magnet 4244 is fixed on the inner side surface of the outer side wall of the first capsule 422 corresponding to the protruding direction of the protruding arc-shaped surface of the arc-shaped metal sheet 4241; the arc-shaped metal piece 4241 is made of ferromagnetic material.
The arc-shaped metal sheet can be attracted by the magnet after the paraffin is melted, so that more stable support can be provided after the paraffin is hardened, and the deformation of the first bag 422 is avoided.
A plurality of iron balls 4242 which are penetrated by pull ropes are fixed on the inner side surface of the opening of the arc-shaped metal sheet 4241, and magnetized iron wires 4243 are dispersed in the paraffin.
After the paraffin melts, the iron ball penetrated by the pull rope is adsorbed with the magnetized iron wire, and a more stable support is formed after the pressure is applied and the iron ball is hardened.
And an inner support body is added, and the inner support body is always in contact with the inner side surface of the inner side wall and the outer side wall of the first capsule in the processes of expansion of the first capsule and melting of paraffin to form rigid support, so that the positioning stability of the metal ring is further improved. The paraffin wax can effectively provide support stability after hardening. In addition, the magnetic iron wires attract each other and the melting and hardening process of paraffin is combined, so that iron balls and the magnetic iron wires are formed inside the openings of the arc-shaped metal sheet to form a net-shaped supporting structure with a main line and a large number of branch lines, the arc-shaped metal sheet is enabled to better support the capsule body and bear stress in all directions.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A workpiece clamping device of a numerical control lathe comprises a fixture (100) and a cutter (300), wherein the fixture (100) is used for clamping a metal ring (200), the cutter (300) is used for trimming the inner ring surface of the metal,
the fixture (100) comprises a base (110) and a pressing part (120);
the base (110) is positioned on a machine tool, and the base (110) comprises a bottom plate (111) and a first interference part (112);
one end, close to the cutter (300), of the bottom plate (111) extends upwards to form a first abutting part (112), the first abutting part (112) comprises a semicircular ring and is used for abutting against one axial side face of the metal ring (200), and when one axial side face of the metal ring (200) abuts against and is attached to a vertical face of the first abutting part (112), the semicircular ring of the first abutting part (112) is coaxial with the metal ring (200);
the extrusion part (120) comprises a sliding seat (121) and a second interference part (122);
the sliding seat (121) is connected with the bottom plate (111) in a sliding mode, and the moving direction of the sliding seat (121) on the bottom plate (111) is parallel to the axis of the semicircular ring of the first abutting part (112);
one end of the sliding seat (121) close to the first interference part (112) extends upwards to form a second interference part (122), the shape and size of the second interference part (122) are the same as those of the first interference part (112), and the axes of the second interference part and the first interference part coincide; the second interference part (122) moves along with the sliding seat (121) and can be matched with the first interference part (112) to clamp the metal ring (200);
the bottom plate (111) is provided with a cylindrical surface groove which is inwards concave, the axis of the cylindrical surface is parallel to the axis of the first abutting part (112), and the diameter of the cylindrical surface is the same as the outer diameter of the metal ring (200);
the diameters of the inner ring surfaces of the first interference part (112) and the second interference part (122) are larger than the inner diameter of the inner ring surface of the metal ring (200);
the sliding seat (121) is powered by hydraulic pressure.
2. The numerically controlled lathe work clamping device according to claim 1, wherein the tool (300) is a boring tool (310) or a cutting tool (320).
3. The numerically controlled lathe work-piece chucking apparatus according to claim 1, further comprising an inner ring positioning assembly (400);
the inner ring positioning assembly (400) comprises a positioning rod (410), a deformation supporting part (420) and a medium charging and discharging device (430);
the sliding seat (121) is provided with a positioning block (123) on one side of the second abutting part (122) far away from the first abutting part (112);
the section of the positioning rod (410) is rectangular, the positioning rod (410) is in sliding fit with the positioning block (123), the positioning rod (410) moves linearly on the positioning block (123), and the moving direction is parallel to the axis of the semicircular ring of the first abutting part (112);
the deformation support (420) includes a first bladder (422);
the first balloon (422) is positioned on a positioning rod (410); said positioning rod (410) having an inner tube (411) for a media playback channel of a first balloon (422);
the first bladder (422) is capable of expanding to abut against the inner annular surface of the metal ring, and the metal ring (200) is capable of remaining in place after the first abutting portion (112) and the second abutting portion (122) are disengaged from the metal ring;
the medium charging and discharging device (430) charges and discharges a medium to the first bag (422) through the inner pipe (411);
the base (110) is detachably and fixedly connected with the machine tool.
4. The numerically controlled lathe workpiece clamping device as claimed in claim 3, wherein the first bladder (422) is a cylindrical bladder, and the medium is air or liquid and is communicated with a pump (432) of the medium charging and discharging device (430) through an inner tube (411).
5. The numerically controlled lathe workpiece clamping device as claimed in claim 3, further comprising a supporting body (421), wherein the supporting body (421) is used for supporting the first bag (422) and is used as an interference surface of the first bag (422), so that the first bag (422) has a positioning base when applying pressure to the inner annular surface of the metal ring (200).
6. The numerical control lathe workpiece clamping device as recited in claim 5, wherein the supporting body (421) comprises a hard cylindrical barrel, the cylindrical barrel is sleeved and fixed outside the positioning rod (410) through a supporting rod, the first bag (422) is sleeved outside the cylindrical barrel, and the axis of the cylindrical barrel is coaxial with the metal ring (200).
7. The numerically controlled lathe workpiece clamping device as claimed in claim 3, wherein the deformation support portion (420) further comprises a support body (421);
the first bag (422) is a cylindrical bag and is sleeved outside the positioning rod (410);
the support body (421) comprises a tube body (4211), a plunger (4212) and a pressure body (4213); a plurality of tube bodies (4211) are arranged, one end of each tube body (4211) is fixed on the first bag (422), the opening of the other end of each tube body points to the positioning rod (410), and the axis of each tube body (4211) passes through the positioning rod (410); at least eight tube bodies (4211) are correspondingly arranged at the same axial position of the positioning rod (410); the tube bodies corresponding to the same axial position of the positioning rod (410) form a group; the support body (421) comprises one or more groups of tube bodies (4211);
a plunger (4212) is inserted into each tube body (4211), and the outer diameter of the plunger (4212) is smaller than the inner diameter of the tube body (4211); the length of the plunger (4212) is greater than that of the tube body (4211);
the tube body (4211) is opened at one end close to the first bag (422), and the pressure body (4213) is fixed on the first bag (422) and is positioned in the open end of the tube body (4211) close to the first bag (422);
the empty end of the plunger (4212) is fixedly connected with the outer wall of a second bag (4221), the second bag (4221) is sleeved outside the positioning rod (410), the second bag (4221) is coaxial with the first bag (422), the plunger (4212) can be uniformly pressed after being expanded, and the second bag (4221) is communicated with a pump (432) in the medium charging and discharging device (430) through a second inner tube in the positioning rod (410).
8. The numerically controlled lathe workpiece clamping device as claimed in claim 7, wherein the deformation support part (420) further comprises a metal disc (423), the metal disc (423) is annular, and the pipe body (4211) is a through hole from an inner annular surface to an outer annular surface of the metal disc (423);
the first bag (422) is sleeved outside the metal disc (423), and the inner pipe (411) penetrates through the metal disc to be communicated with the first bag (422);
the pressure body (4213) is abutted by the plunger (4212) to enable the inner wall and the outer wall of the first bag (422) to be attached, and further enable the pressure body (4213) to apply pressure to the metal ring (200).
9. The numerical control lathe workpiece clamping device as claimed in claim 8, wherein a plurality of inner supporting bodies (424) are uniformly distributed and hinged on the inner side surface of the inner side wall of the first bag (422), each inner supporting body (424) comprises an arc-shaped metal sheet (4241), and paraffin is filled in the first bag (422); the magnet (4244) is fixed on the inner side surface of the outer side wall of the first capsule (422) corresponding to the protruding direction of the protruding arc-shaped surface of the arc-shaped metal sheet (4241); the arc-shaped metal sheet (4241) is made of ferromagnetic material.
10. The numerical control lathe workpiece clamping device as claimed in claim 9, wherein a plurality of iron balls (4242) penetrated by a pulling rope are fixed on the inner side surface of the opening of the arc-shaped metal sheet (4241), and magnetized iron wires (4243) are dispersed in the paraffin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310256222.9A CN115971928B (en) | 2023-03-16 | 2023-03-16 | Workpiece clamping device of numerical control lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310256222.9A CN115971928B (en) | 2023-03-16 | 2023-03-16 | Workpiece clamping device of numerical control lathe |
Publications (2)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117300091A (en) * | 2023-11-28 | 2023-12-29 | 秦皇岛科泰工业有限公司 | Cold core casting process |
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| CN203579221U (en) * | 2013-10-09 | 2014-05-07 | 上海航天精密机械研究所 | Liquid plastic outer supporting self-centering clamping device for machining |
| CN208231305U (en) * | 2018-05-11 | 2018-12-14 | 山东隆基机械股份有限公司 | A kind of cylinder block boring inner hole face clamping device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117300091A (en) * | 2023-11-28 | 2023-12-29 | 秦皇岛科泰工业有限公司 | Cold core casting process |
| CN117300091B (en) * | 2023-11-28 | 2024-01-30 | 秦皇岛科泰工业有限公司 | Cold core casting process |
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| Publication number | Publication date |
|---|---|
| CN115971928B (en) | 2023-07-07 |
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