CN201950491U

CN201950491U - Quick clamping device

Info

Publication number: CN201950491U
Application number: CN 201020665482
Authority: CN
Inventors: 李大海; 吴文奎
Original assignee: Tianjin Heavy Equipment Engineering Research Co Ltd; China First Heavy Industries Co Ltd
Current assignee: Tianjin Heavy Equipment Engineering Research Co Ltd; China First Heavy Industries Co Ltd
Priority date: 2010-12-17
Filing date: 2010-12-17
Publication date: 2011-08-31
Anticipated expiration: 2020-12-17

Abstract

The utility model provides a quick clamping device, comprising a screw, a bearing body, an outer screw sleeve, a housing, an inner screw sleeve, and an annular screw sleeve; the lower end of the screw is in a bolt joint with a T-shaped block in the internal of a work platform, the upper portion is matched with screw threads of the inner screw sleeve; the bearing body is an annular columnar body, and sleeves the upper portion of the screw, and a plurality of pressure holes are uniformly distributed in a circumferential direction radially; the inner screw sleeve is in a bolt joint with the screw and the outer screw sleeve; the bottom of the outer screw sleeve is disposed at the top of the housing; each pin goes through a spring in a pressure hole of the bearing body and is connected with an inner screw sleeve positioning hole via a retaining ring, making the bearing body be connected with the inner screw sleeve as a whole; the housing is an annular columnar body, the top of the housing is provided with an upper cover, the bottom is provided with a bottom cover; Via a mechanical type clamping mode, the quick clamping device is provided with effects of small torque, big compacting force, no particular requirement for construction environment, no requirement for assistant tool, few operators, and cost saving.

Description

Fast fixture

Technical field

The utility model relates to machining equipment, relates in particular to a kind of fast fixture that can clamp fast workpiece in machining.

Background technology

At present, clamping tool commonly used in machining is the fabricated structure of bolt clip plate, for big machinery processing parts clamping need to compress dynamics bigger, need on spanner, install extension bar additional usually, and move simultaneously and could clamp by many people; Secondly, the clamping time is longer; Moreover the installation environment clamping operation little to the space is relatively more difficult.If use electronic or fluid pressure type anchor clamps, though can be convenient and swift, also there is many disadvantages, the one, need to connect more equipment; The 2nd, higher to the machining environmental requirement, cause cost to increase; The 3rd, after the clamping rotational workpieces clamped, hydraulic means or electrical installation were difficult to removal, caused difficulty for enforcement processing operation, and equipment cost is higher simultaneously.

The utility model content

Main purpose of the present utility model is to overcome the above-mentioned shortcoming that existing product exists, and provide a kind of fast fixture, it adopts the mechanical type clamping mode, has that moment of torsion is little, thrust is big, construction environment has no special requirements, do not need aid, operating personnel are few and cost-effective effect.

The purpose of this utility model is realized by following technical scheme.

The utility model fast fixture is characterized in that, comprises screw rod 4, pressure-bearing body 17, external thread sleeve 1, housing 18, interior swivel nut 2 and annular swivel nut 7; The inner T shape of these screw rod 4 lower ends and workbench piece 10 is spirally connected top and interior swivel nut 2 threaded engagement; This pressure-bearing body 17 is circular cylindrical bodies, is set in screw rod 4 tops, and its radial circumference direction is laid with a plurality of pressures hole 28; Interior swivel nut 2 is spirally connected with screw rod 4 and external thread sleeve 1; External thread sleeve 1 bottom is installed in housing 18 tops; Pin 6 passes and is positioned at pressure-bearing body 17 and presses the spring 16 in holes 28 and be connected with swivel nut 2 locating holes 26 by back-up ring 5, makes pressure-bearing body 17 and interior swivel nut connect into as a whole; Housing 18 is the circular cylindrical body, and these housing 18 tops are provided with loam cake 3, and the bottom is provided with bottom 15.

Aforesaid fast fixture, its middle shell 18 is the circular cylinder of scalene cone for the inwall bottom, this circular cylinder inwall top is provided with annular groove, this groove closes the formation annular groove with 3 of the loam cakes that is arranged on housing 18 tops, for holding external thread sleeve 1 bottom, this circular cylinder outer wall top is provided with a plurality of screws, and this screw is for screwing togather the loam cake 3 of flange ringwise; This circular cylinder inwall bottom scalene cone is interior scalene cone 20, and scalene cone 20 is a working face in this; The bottom of this housing 18 is provided with a plurality of screws, and this screw is for screwing togather the bottom 15 of flange ringwise, ring spring 7 is limited in housing 18 inside.

Aforesaid fast fixture, wherein interior swivel nut 2 is anterior tapered hollow cylinder, the inner and outer wall of this hollow cylinder is respectively equipped with internal thread 25 and external screw thread 24; The internal thread 25 of swivel nut 2 is spirally connected with screw rod 4 upper ends in being somebody's turn to do, and the external screw thread 24 of interior swivel nut 2 is spirally connected with the internal thread that the inwall of external thread sleeve 1 is provided with; Should interior swivel nut 2 anterior taper surfaces 27 be working face, and front top be equipped with a plurality of locating holes 26.

Aforesaid fast fixture, wherein external thread sleeve 1 is a hollow cylinder, this hollow cylinder inwall is provided with internal thread, and outer wall top is hexagon for sheathed spanner, and external thread sleeve 1 bottom is the boss body for being fastened in loam cake 3 and the housing 18 inwall tops 18 formed annular grooves.

Aforesaid fast fixture, wherein ring spring 7 is the annular solid of scalene cone for lateral surface and end face, the scalene cone of this annular solid lateral surface is outer scalene cone, the scalene cone of end face is interior scalene cone, and annular solid lateral surface and medial surface peripheral intervals are all established bullet seam 23, make ring spring 7 reduced or increase by this bullet seam is flexible, the scalene cone of these ring spring 7 lateral surfaces and end face is a working face.

The beneficial effect of the utility model fast fixture is that under little moment of torsion, the increase thrust reduces operating personnel, does not need aid, has the effect of quick clamping.

Description of drawings:

Fig. 1 is the utility model fast fixture overall structure decomposing schematic representation.

Fig. 2 is the utility model fast fixture overall structure combination schematic diagram.

Fig. 3 is the utility model fast fixture user mode schematic diagram.

Fig. 4 is a ring spring structural representation shown in Figure 1.

Fig. 5 is an interior screw bushing structure schematic diagram shown in Figure 1.

Fig. 6 is a pressure-bearing body structure schematic diagram shown in Figure 1.

Major label description in figure: 1 external thread sleeve, swivel nut in 2,3 loam cakes, 4 screw rods, 5 back-up rings, 6 pins, 7 ring springs, 8 adjust cushion block, 9 workbench, 10 is T shape piece, 11 packing rings, 12 pressing plates, 13 workpiece, 14 screws, 15 bottoms, 16 springs, 17 pressure-bearing bodies, 18 housings, 19 packing rings, scalene cone in 20 housings, the outer scalene cone of 21 ring springs, scalene cone in 22 ring springs, 23 ring spring bullets seam, swivel nut external screw thread in 24, swivel nut internal thread in 25,26 locating holes, scalene cone before the swivel nut in 27,28 pressure-bearing bodies are pressed the hole.

The specific embodiment

As shown in Figure 1 and Figure 2, the utility model fast fixture, it comprises screw rod 4, pressure-bearing body 17, external thread sleeve 1, housing 18, interior swivel nut 2 and annular swivel nut 7; The inner T shape of these screw rod 4 lower ends and workbench piece 10 is spirally connected top and interior swivel nut 2 threaded engagement; This pressure-bearing body 17 is circular cylindrical bodies, is set in screw rod 4 tops, and its radial circumference direction is laid with a plurality of pressures hole 28, as shown in Figure 6; Interior swivel nut 2 is spirally connected with screw rod 4 and external thread sleeve 1; External thread sleeve 1 bottom is installed in housing 18 tops; Pin 6 passes and is positioned at pressure-bearing body 17 and presses the spring 16 in holes 28 and be connected with swivel nut 2 locating holes 26 by back-up ring 5, makes pressure-bearing body 17 and interior swivel nut connect into as a whole; Housing 18 is the circular cylindrical body, and these housing 18 tops are provided with loam cake 3, and the bottom is provided with bottom 15.

As shown in Figure 1 and Figure 2, the utility model fast fixture, wherein: this housing 18 is the circular cylinder of scalene cone for the inwall bottom, this circular cylinder inwall top is provided with annular groove, this groove closes the formation annular groove with 3 of the loam cakes that is arranged on housing 18 tops, for holding external thread sleeve 1 bottom, this circular cylinder outer wall top is provided with a plurality of screws, and this screw is for screwing togather the loam cake 3 of flange ringwise; This circular cylinder inwall bottom scalene cone is interior scalene cone 20, and scalene cone 20 is a working face in this; The bottom of this housing 18 is provided with a plurality of screws, and this screw is for screwing togather the bottom 15 of flange ringwise, ring spring 7 is limited in housing 18 inside; Should interior swivel nut 2 be anterior tapered hollow cylinder, the inner and outer wall of this hollow cylinder be respectively equipped with internal thread 25 and external screw thread 24; The internal thread 25 of swivel nut 2 is spirally connected with screw rod 4 upper ends in being somebody's turn to do, and the external screw thread 24 of interior swivel nut 2 is spirally connected with the internal thread that the inwall of external thread sleeve 1 is provided with; Should in swivel nut 2 anterior taper surfaces 27 be working face, and front top is equipped with a plurality of locating holes 26, as shown in Figure 5; This external thread sleeve 1 is a hollow cylinder, and this hollow cylinder inwall is provided with internal thread, and outer wall top is hexagon for sheathed spanner, and external thread sleeve 1 bottom is the boss body for being fastened in loam cake 3 and the housing 18 inwall tops 18 formed annular grooves; This ring spring 7 is the annular solid of scalene cone for lateral surface and end face, the scalene cone of this annular solid lateral surface is outer scalene cone, the scalene cone of end face is interior scalene cone, and annular solid lateral surface and medial surface peripheral intervals are all established bullet seam 23, stitch flexible make ring spring 7 reduced or increase by this bullet, the scalene cone of these ring spring 7 lateral surfaces and end face is a working face, as shown in Figure 4.

When as shown in Figure 3, the utility model fast fixture used: the openend that at first will be U font body pressing plate 12 was pressed on the workpiece 13, and blind end is pressed in adjustment cushion block 8 tops that are placed on workbench 9 table tops; Being installed in platen 9 or mounting plate after screw rod 4 bottoms of this fast fixture are passed from the spaces in the middle of the pressing plate 12 is arranged on the T shape piece in the T-slot.

External thread sleeve 1 is unified body with housing 18 by loam cake 3,

screw

14,19 on packing ring, and external thread sleeve 1 can relatively rotate with housing 18, and interior swivel nut 2 is spirally connected by the internal thread of external screw thread 24 with external thread sleeve 1; The ring spring 7 interior scalene cones 22 of making the diclinic conical surface contact with interior swivel nut 2 upper taper faces 27, the outer scalene cone 21 of ring spring 7 contacts with scalene cone 20 in the housing of housing 18, pin 6, spring 16 is contained in the pressure hole 28 of pressure-bearing body 17 successively, pin 6 passes spring 16 successively, ring spring bullet seam 23, interior swivel nut 2 locating holes 26 are also fixing by back-up ring 5 and interior swivel nut 2, pressure-bearing body 17 is crushed on the bottom surface of ring spring 7 by

spring

16,18 of bottom 15 and housings are got togather, swivel nut 2 inside were spirally connected with internal thread 25 in screw rod 4 upper ends were contained in, the bottom is installed in the T shape piece 10, this T shape piece 10 is installed in the T-slot of workbench 9, and pressure-bearing body 17 acts on the pressing plate 12 by packing ring 11; Packing ring 11 is made annular plate-like, central through hole, and upper surface contacts with pressure-bearing body 17, and lower surface is replaced on pressing plate 12, and pressing plate 12 is made U font body; Adjust cushion block 8 and be pressed on workbench 9 table tops, its upper surface and workpiece to be held face parallel, be convenient to pressing plate 12 and act on the workpiece with lever principle; External thread sleeve 1 rotates under the spanner effect, swivel nut 2 rotated on screw rod 4 in external thread sleeve 1 drove, drive housing 18 simultaneously, ring spring 7, bottom 15, pressure-bearing body 17, pin 6, spring 16, back-up ring 5 rotates together, when pressure-bearing body 17 contacts with pressing plate 12, under the elastic force effect of ring spring 7,17 pairs of pressing plates of pressure-bearing body 12 produce preload pressure, when pressure reaches certain numerical value, ring spring 7 deforms, external thread sleeve 1 turn on the external screw thread 24 of interior swivel nut 2, at this moment external thread sleeve 1 promotes housing 18 motions, housing 18 produces boosting function by the outer scalene cone 21 of scalene cone in the housing 20 and ring spring and makes ring spring 7 distortion and diameter reduction, ring spring 7 produces once more boosting function by interior scalene cone 22 with interior swivel nut upper taper face 27 and is pressed on the pressure-bearing body 17, pressure-bearing body 17 is by packing ring 11, pressing plate 12 compresses workpiece 13, finishes the clamping work of fast big pressure.

The operation principle of the utility model fast fixture, utilize spanner to pull swivel nut in external thread sleeve and then the drive, housing, ring spring and the rotation of pressure-bearing body, interior swivel nut moves on screw rod and tightens with screw rod, when the pressure-bearing body is pressed on the workpiece and produce certain thrust, interior swivel nut increases no longer motion because of being subjected to resistance, external thread sleeve is internally swivel nut motion mutually, the scalene cone compression ring spring radial motion that make the inboard of promotion housing, the ring spring outside and end face are made scalene cone, form diclinic conical surface reinforcement structure, under the effect of housing, radial motion enters in the wedge-like gap that is formed by pressure-bearing body and the anterior taper surface of interior swivel nut, thereby interior swivel nut is propped up, reached the order ground of the thrust that increases the pressure-bearing body; During the reverse rotation external thread sleeve, external thread sleeve drives the housing counter motion, ring spring withdraws from from the wedge-like gap of pressure-bearing body and the anterior taper surface formation of interior swivel nut owing to the elastic reaction of spring, thrust reduces, when reaching the setting thrust, the swivel nut rotation was withdrawed from from screw rod in external thread sleeve drove, and finished the order ground that supercharging compresses and pulls down.

The utility model fast fixture has the effect that increases thrust under little moment of torsion, its principle is: when external thread sleeve is screwed into, external thread sleeve will act on the outer scalene cone of ring spring of ring spring by scalene cone in the housing of lower housing portion, finish reinforcement for the first time by the boosting function of the outer scalene cone of ring spring, move to the inside under the effect of ring spring scalene cone in housing, at this moment scalene cone acts on the anterior scalene cone of interior swivel nut in the ring spring, finish boosting function for the second time by scalene cone in the ring spring and the anterior scalene cone of interior swivel nut, therefore under the little thrust effect that the little moment of torsion that external thread sleeve is screwed into produces to housing, by secondary scalene cone reinforcement, reach the effect that increases thrust.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims

1. a fast fixture is characterized in that, comprises screw rod (4), pressure-bearing body (17), external thread sleeve (1), housing (18), interior swivel nut (2) and annular swivel nut (7);

The inner T shape piece of this screw rod (4) lower end and workbench (10) is spirally connected top and interior swivel nut (2) threaded engagement;

This pressure-bearing body (17) is the circular cylindrical body, is set in screw rod (4) top, and its radial circumference direction is laid with a plurality of pressures hole (28);

Interior swivel nut (2) is spirally connected with screw rod (4) and external thread sleeve (1);

External thread sleeve (1) bottom is installed in housing (18) top;

Pin (6) passes the spring (16) that is positioned at pressure-bearing body (17) pressure hole (28) and is connected with swivel nut (2) locating hole (26) by back-up ring (5), makes pressure-bearing body (17) and interior swivel nut connect into as a whole;

Housing (18) is the circular cylindrical body, and this housing (18) top is provided with loam cake (3), and the bottom is provided with bottom (15).

2. fast fixture according to claim 1, it is characterized in that, described housing (18) is the circular cylinder of scalene cone for the inwall bottom, this circular cylinder inwall top is provided with annular groove, this groove be arranged on the loam cake (3) at housing (18) top closing the formation annular groove, for holding external thread sleeve (1) bottom, this circular cylinder outer wall top is provided with a plurality of screws, and this screw is for screwing togather the loam cake of flange (3) ringwise; This circular cylinder inwall bottom scalene cone is interior scalene cone (20), and scalene cone (20) is a working face in this; The bottom of this housing (18) is provided with a plurality of screws, and this screw is for screwing togather the bottom of flange (15) ringwise, ring spring (7) is limited in housing (18) inside.

3. fast fixture according to claim 1 is characterized in that, described interior swivel nut (2) is anterior tapered hollow cylinder, and the inner and outer wall of this hollow cylinder is respectively equipped with internal thread (25) and external screw thread (24); The internal thread (25) of swivel nut (2) is spirally connected with screw rod (4) upper end in being somebody's turn to do, and the external screw thread (24) of interior swivel nut (2) is spirally connected with the internal thread that the inwall of external thread sleeve (1) is provided with; Should the interior anterior taper surface of swivel nut (2) (27) be working face, and front top be equipped with a plurality of locating holes (26).

4. fast fixture according to claim 1 and 2, it is characterized in that, described external thread sleeve (1) is a hollow cylinder, this hollow cylinder inwall is provided with internal thread, outer wall top is hexagon for sheathed spanner, and external thread sleeve (1) bottom is the boss body for being fastened in loam cake (3) and the formed annular groove in housing (18) inwall top (18).

5. fast fixture according to claim 1, it is characterized in that, described ring spring (7) is the annular solid of scalene cone for lateral surface and end face, the scalene cone of this annular solid lateral surface is outer scalene cone, the scalene cone of end face is interior scalene cone, and annular solid lateral surface and medial surface peripheral intervals are all established bullet seam (23), and stretching by this bullet seam makes ring spring (7) reduced or increase, and the scalene cone of this ring spring (7) lateral surface and end face is a working face.