CN212553002U - Non-contact air floatation clamp applied to grinding machine tool - Google Patents
Non-contact air floatation clamp applied to grinding machine tool Download PDFInfo
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- CN212553002U CN212553002U CN202022223789.0U CN202022223789U CN212553002U CN 212553002 U CN212553002 U CN 212553002U CN 202022223789 U CN202022223789 U CN 202022223789U CN 212553002 U CN212553002 U CN 212553002U
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- bearing seat
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Abstract
The non-contact air-floating clamp applied to the grinding machine tool comprises a shell, an air inlet hole and an air outlet hole; the two ends of the shell are provided with inner holes for penetrating through a front pneumatic bearing seat and a rear pneumatic bearing seat of a machined workpiece, a plurality of through vent grooves are circumferentially arranged on the shell, one ends of the vent grooves are communicated with the air inlet holes, and the other ends of the vent grooves are opposite to the outer surface of the workpiece; the locating sleeve is arranged on one side of the front pneumatic bearing seat and used for locating the machined workpiece in a sleeved mode, the machined workpiece with the cut outer circle is located through the locating sleeve, certain air pressure is injected from the air inlet hole, air acts on the outer circle surface of the machined workpiece through the air grooves of the two pneumatic bearing seats, an annular air pressure film is formed on the outer circle surface of the workpiece, the machined workpiece floats for grinding, the locating sleeve is used for axial positioning of the workpiece, workpiece shifting is prevented, grinding accuracy is better guaranteed, clamping is simple and rapid, and the workpiece can be ground only by arranging the workpiece in the inner hole and introducing the air with certain pressure in a non-contact mode.
Description
Technical Field
The utility model relates to a frock clamp field especially relates to be applied to non-contact air supporting anchor clamps of grinding lathe.
Background
The conventional method for grinding the inner hole of the shaft part comprises 2 steps: 1, grinding an outer circle, clamping the outer circle by three claws, beating the outer circle to jump, and finely grinding an inner hole; 2, grinding the outer circle, clamping the outer circle by three claws, erecting a center frame, beating the outer circle to jump, and finely grinding the inner hole.
However, the two methods for grinding the inner hole are slow in clamping time and difficult to operate, and the coaxiality precision of the excircle and the inner hole of the manufactured part is unstable.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the technical scheme provides the non-contact air floatation clamp applied to the grinding machine tool, and the machined workpiece is positioned and cut by utilizing the pressure of air.
In order to achieve the purpose, the technical scheme is as follows:
a non-contact air-floating clamp applied to a grinding machine tool comprises a clamp body;
the air inlet and the air outlet are arranged on the shell;
a non-contact air-floating clamp applied to a grinding machine tool comprises a clamp body;
the air inlet and the air outlet are arranged on the shell;
the two ends of the shell are respectively provided with a front pneumatic bearing seat and a rear pneumatic bearing seat, inner holes of the front pneumatic bearing seat and the rear pneumatic bearing seat are used for penetrating through a machined workpiece, a plurality of vent grooves penetrating through the front pneumatic bearing seat and the rear pneumatic bearing seat are uniformly distributed in the circumferential direction of the front pneumatic bearing seat and the rear pneumatic bearing seat, one end of each vent groove is communicated with the air inlet hole, and the other end of each vent groove is opposite to the outer surface of the;
and one side of the front pneumatic bearing seat is provided with a positioning sleeve which is used for being sleeved on the machined workpiece to position the machined workpiece.
In this application, at first fix a position the processing work piece that has cut the excircle through the position sleeve, pour into certain atmospheric pressure into from the inlet port thereupon, gaseous air channel through two pneumatic bearing frame acts on processing work piece excircle on the surface, thereby work piece excircle surface forms an annular atmospheric pressure membrane, it grinds to float the processing work piece, the position sleeve is used for the axial positioning of work piece, prevent the work piece drunkenness, better assurance grinding precision, the clamping is simple swift, only need place the work piece in the hole and let in the gaseous of certain pressure can the non-contact rotatory work piece grind, can realize a clamping and grind work piece both ends hole simultaneously, reduce the deviation that repeated clamping and contact friction brought, better assurance work piece axiality and size required precision.
In some embodiments, a cavity communicating the vent groove with the air inlet is formed in the inner wall of the housing, a plurality of first air holes which are circumferentially and uniformly distributed and communicated with the cavity are formed in the end face of the front pneumatic bearing seat, the fixture further comprises an air floatation power plate arranged on one side of the positioning sleeve, a plurality of second air holes which are circumferentially and uniformly distributed and communicated with the cavity are formed in the end face of the air floatation power plate, and the first air holes and the second air holes are respectively located on two sides of the positioning sleeve.
In some embodiments, the positioning sleeve further comprises a front gland arranged on one side of the positioning sleeve, two sealing rings are arranged in the axial direction of the end face of the front gland, and a cavity between the two sealing rings is communicated with the second air hole.
In some embodiments, the vent groove is provided with a gas supply part near the processing workpiece, the gas supply part has a conical gas inlet end, and the opening is in a horn shape.
In some embodiments, the periphery of the front pneumatic bearing seat is provided with a plurality of protruding rings, and the end faces of the protruding rings are provided with flat positions for communicating gas.
In some embodiments, the air floatation clamp further comprises a distance ring for the positioning sleeve to be sleeved on.
In some embodiments, the inner wall of the locating sleeve is provided with a plurality of sealing rings for circumferential sealing and circumferential positioning.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.
FIG. 1 is a first schematic structural diagram of an embodiment of the present application;
FIG. 2 is a schematic structural diagram II of the embodiment of the present application, hiding the front gland;
FIG. 3 is an exploded view of an embodiment of the present application;
FIG. 4 is a schematic cross-sectional view of an embodiment of the present application;
FIG. 5 is an end view cross-sectional schematic of an embodiment of the present application;
FIG. 6 is an enlarged view at A of FIG. 4;
FIG. 7 is an enlarged view at B of FIG. 4;
fig. 8 is a schematic diagram of the operation of the present application.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-8, the present invention provides an embodiment:
a non-contact air-floating clamp applied to a grinding machine tool comprises a clamp body;
the air conditioner comprises a shell 1, wherein an air inlet 2 and an air outlet 3 are arranged on the shell 1;
a non-contact air-floating clamp applied to a grinding machine tool comprises a clamp body;
the air conditioner comprises a shell 1, wherein an air inlet 2 and an air outlet 3 are arranged on the shell 1;
a front pneumatic bearing seat 4 and a rear pneumatic bearing seat 5 are respectively arranged at two ends of the shell 1, inner holes of the front pneumatic bearing seat 4 and the rear pneumatic bearing seat 5 are used for penetrating through a machined workpiece, a plurality of vent grooves 6 penetrating through the front pneumatic bearing seat 4 and the rear pneumatic bearing seat 5 are uniformly distributed in the circumferential direction of the front pneumatic bearing seat 4 and the rear pneumatic bearing seat 5, one end of each vent groove 6 is communicated with the air inlet hole 2, and the other end of each vent groove is opposite to the outer surface of the;
and one side of the front pneumatic bearing seat 4 is provided with a positioning sleeve 7 which is used for being sleeved on a machining workpiece to position the machining workpiece.
In this application, at first fix a position the processing work piece that has cut the excircle through the position sleeve, pour into certain atmospheric pressure into from the inlet port thereupon, gaseous air channel through two pneumatic bearing frame acts on processing work piece excircle on the surface, thereby work piece excircle surface forms an annular atmospheric pressure membrane, it grinds to float the processing work piece, the position sleeve is used for the axial positioning of work piece, prevent the work piece drunkenness, better assurance grinding precision, the clamping is simple swift, only need place the work piece in the hole and let in the gaseous of certain pressure can the non-contact rotatory work piece grind, can realize a clamping and grind work piece both ends hole simultaneously, reduce the deviation that repeated clamping and contact friction brought, better assurance work piece axiality and size required precision. The external belt of processing work piece is stirred for the work piece rotates and carries out abrasive machining, processes with this frock, and convenient operation, clamping time are fast, the repeated clamping precision is high, the part axiality of processing out is within 5um, and the circularity is within 3 um.
During operation, as shown in fig. 8, a workpiece to be machined passes through the inner holes of the front pneumatic bearing seat and the rear pneumatic bearing seat, the positioning sleeve is sleeved on the inner holes, the clamp is corrected and fixed, certain air pressure is introduced into the air inlet hole, an air pressure film is formed inside the air pressure to enable the workpiece to float, the motor belt pulley is used for driving the workpiece to rotate in a suspended mode, the workpiece cannot move horizontally under the limiting effect of the positioning sleeve, and the workpiece is close to the inner hole of the workpiece to be ground along with the horizontal movement of the machine tool spindle and the grinding rod on the two sides.
In this embodiment, the inner wall of the housing 1 is provided with a cavity 8 communicating the air vent 6 with the air inlet 2, the end surface of the front pneumatic bearing seat 4 is provided with a plurality of first air holes 9 which are circumferentially and uniformly distributed and communicated with the cavity 8, the clamp further comprises an air-floating power plate 10 arranged on one side of the positioning sleeve 7, the end surface of the air-floating power plate 10 is provided with a plurality of second air holes 11 which are circumferentially and uniformly distributed and communicated with the cavity 8, the first air holes 9 and the second air holes 11 are respectively positioned on two sides of the positioning sleeve 7, as shown in fig. 4, the cavity is annularly arranged inside the housing and communicated with the front and rear pneumatic bearing seats, after a certain pressure gas is introduced from the air inlet, the gas is annularly transferred in the cavity, thereby entering the air vent in the two bearing seats, and simultaneously, the gas also generates a pressure from the first air holes to the protruding part of the positioning, similarly, the gas in the cavity also passes through the cavity of the front pneumatic bearing seat, the cavity of the distance ring and the cavity of the air floatation power plate, and is finally transmitted to the second air hole in an annular mode to generate pressure on the other surface of the positioning sleeve, so that the positioning sleeve is also floated, the workpiece can drive the positioning sleeve to rotate along with the positioning sleeve when rotating, the workpiece in the whole machining process can be guaranteed to be always limited by the positioning sleeve, and the machining precision is further increased.
In this embodiment, the positioning sleeve further includes a front gland 17 disposed on one side of the positioning sleeve 7, two sealing rings 16 are disposed in an axial direction of an end surface of the front gland 17, a cavity between the two sealing rings 16 is communicated with the second air hole 11, as shown in fig. 4, an annular groove is formed in one surface of the front gland, and two ends of the groove are axially sealed by the sealing rings to ensure sealing performance, so that pressures applied to two sides of the positioning sleeve are consistent, and air pressure is stable, as can be seen from the end surface of fig. 2, under the limiting action of the two sealing rings, air in the cavity can only be introduced into the second air hole to generate pressure on the positioning sleeve.
In the embodiment, the connection part between the cavity of the front pneumatic bearing seat, the cavity of the distance ring and the cavity of the air floatation power plate is sealed.
In this embodiment, vent groove 6 is equipped with air feed unit 12 near processing work piece department, air feed unit 12 one end of admitting air is the toper, and the opening is the loudspeaker form, as shown in fig. 6, and air feed unit is close to the one end of admitting air and is the toper, is favorable to gaseous gathering, a rethread cylinder connecting portion, and the gas flow rate of output is great like this, fills inside air faster, and the position of final output is the opening, is favorable to gaseous diffusion, also can guarantee the atmospheric pressure stability of inner chamber.
In this embodiment, the periphery of preceding pneumatic bearing frame 4 is equipped with a plurality of protruding rings 13, the terminal surface of protruding ring 13 is equipped with flat position 14 with the gas circulation, makes the gas flow of inside, and the atmospheric pressure of intracavity prevents steadily that the work piece from rocking and influence processing.
In this embodiment, the air floatation clamp further includes a distance ring 15 for the locating sleeve 7 to be sleeved, and the gap is controlled to ensure that the gap of the locating sleeve is between 0.015 and 0.02, and the gas is uniformly distributed.
In the embodiment, the inner wall of the positioning sleeve 7 is provided with a plurality of sealing rings 16 for circumferential sealing and circumferential positioning, so that good sealing performance is ensured, an axial positioning effect is also achieved, and the workpiece is prevented from moving by using the friction force and the shock absorption performance of the sealing rings when the long straight hole end is ground; thereby realizing the one-time clamping of the inner holes at the two ends and simultaneously grinding the inner holes at the two ends.
The above description is only for the purpose of illustrating the preferred embodiments of the present application and is not intended to limit the scope of the present application, which is within the scope of the present application, except that the same or similar principles and basic structures as the present application may be used.
Claims (7)
1. Be applied to non-contact air supporting anchor clamps of grinding lathe, its characterized in that: comprises the following steps of;
the air purifier comprises a shell (1), wherein an air inlet (2) and an air outlet (3) are formed in the shell (1);
the pneumatic processing machine is characterized in that a front pneumatic bearing seat (4) and a rear pneumatic bearing seat (5) are respectively arranged at two ends of the shell (1), inner holes of the front pneumatic bearing seat (4) and the rear pneumatic bearing seat (5) are used for penetrating through a processing workpiece, a plurality of vent grooves (6) penetrating through the front pneumatic bearing seat (4) and the rear pneumatic bearing seat (5) are uniformly distributed in the circumferential direction, one end of each vent groove (6) is communicated with the air inlet hole (2), the other end of each vent groove is opposite to the outer surface of the workpiece, and the processing workpiece floats in the inner holes of the front pneumatic bearing seat (4) and the rear pneumatic bearing seat (5) when being inflated;
and one side of the front pneumatic bearing seat (4) is provided with a positioning sleeve (7) which is used for being sleeved on a processing workpiece to position the processing workpiece in the shell (1).
2. The non-contact air floatation clamp applied to the grinding machine tool according to claim 1, is characterized in that: the inner wall of casing (1) is equipped with cavity (8) of air duct (6) and inlet port (2) intercommunication, preceding pneumatic bearing frame (4) terminal surface be provided with a plurality of circumference equipartitions and with first gas pocket (9) of cavity (8) intercommunication, this anchor clamps are still including locating air supporting power plate (10) of position sleeve (7) one side, air supporting power plate (10) terminal surface be provided with a plurality of circumference equipartitions and with second gas pocket (11) of cavity (8) intercommunication, first gas pocket (9) with second gas pocket (11) are located respectively position sleeve (7) both sides.
3. The non-contact air floatation clamp applied to the grinding machine tool according to claim 2, characterized in that: still including locating preceding gland (17) of position sleeve (7) one side, the axial direction of preceding gland (17) terminal surface is provided with two sealing washer (16), two cavity between sealing washer (16) with second gas pocket (11) intercommunication.
4. The non-contact air floatation clamp applied to the grinding machine tool according to claim 1 or 3, characterized in that: the air supply part (12) is arranged at the position, close to the workpiece to be processed, of the air groove (6), the air inlet end of the air supply part (12) is conical, and the opening is horn-shaped.
5. The non-contact air floatation clamp applied to the grinding machine tool according to claim 1, is characterized in that: the periphery of preceding pneumatic bearing frame (4) is equipped with a plurality of bellying rings (13), the terminal surface of bellying ring (13) is equipped with flat position (14) with the gas circulation.
6. The non-contact air floatation clamp applied to the grinding machine tool according to claim 1, is characterized in that: the air floatation clamp also comprises a distance ring (15) for sleeving the positioning sleeve (7).
7. The non-contact air floatation clamp applied to the grinding machine tool according to claim 1, is characterized in that: the inner wall of the positioning sleeve (7) is provided with a plurality of sealing rings (16) which are used for circumferential sealing and circumferential positioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022223789.0U CN212553002U (en) | 2020-09-30 | 2020-09-30 | Non-contact air floatation clamp applied to grinding machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022223789.0U CN212553002U (en) | 2020-09-30 | 2020-09-30 | Non-contact air floatation clamp applied to grinding machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212553002U true CN212553002U (en) | 2021-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022223789.0U Active CN212553002U (en) | 2020-09-30 | 2020-09-30 | Non-contact air floatation clamp applied to grinding machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212553002U (en) |
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2020
- 2020-09-30 CN CN202022223789.0U patent/CN212553002U/en active Active
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