CN2130643Y

CN2130643Y - Self-supportable and self-adjustable pressing device

Info

Publication number: CN2130643Y
Application number: CN 92223490
Authority: CN
Inventors: 余承赋
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-05-30
Filing date: 1992-05-30
Publication date: 1993-04-28
Anticipated expiration: 2002-05-30

Abstract

The utility model discloses a self-supportable and self-adjustable pressing device which is that one end of the non-pressing workpiece of a pressing plate is supported by autogenous means, and the self-supportable and self-adjustable pressing device is suitable for being matched on various machine tools to press processed workpieces. The utility model is formed in the mode that support nuts mutually applied and closed, pressing plate combinations mutually and slidably sheathed and pressing nuts mutually applied and closed are respectively arranged from bottom to top on the portion with screw threads of a screw which is integrally in the shape of L. The two ends of the pressing plates in the pressing plate combinations are respectively pressed on the workpieces and the support nuts after the pressing plates being swung, and the workpieces are pressed by the pressing nuts being tightened to make integration generate elastic deformation, so the trouble and the waste brought by selecting and allocating a base plate are left out, and the mounting range of a platen is used fully.

Description

Self-supportable and self-adjustable pressing device

The utility model relates to a kind of improved fixedly hold down gag of workpiece to be machined that is used on the lathe, and particularly a kind of member of use device self comes the self-adjustable of the supporting certainly hold down gag of non-workpiece pressing one end on the bearing plate.

Existing hold down gag mainly by the screwed screw rod in two ends, centre have through hole and thus through hole penetrate the pressing plate of screw rod, clamp nut that the screw rod upper and lower side is screwing respectively and T type groove nut are formed.During workpiece pressing, be contained in the T type groove on the platen being screwed in T type groove nut on the screw rod; Be sleeved on the pressing plate on the screw rod, an end contacts with compacted workpiece, and the other end is by supporting with the contour cushion block of workpiece; On the screw rod above the pressing plate, screw on clamp nut again, tighten clamp nut and just workpiece can be fixed on the workbench of lathe reliably.This mode that compresses need be equipped with more cushion block and need match suitable cushion block according to the workpiece height, and is therefore both uneconomical, spend more unproductive time again.

Existing another kind of hold down gag is the self-adjustable hold down gag, and it is that the non-of pressing plate and workpiece contact jaw directly are pressed on the workbench of lathe.This mode that compresses need be equipped with the pressing plate and the screw rod of plurality of specifications according to different workpiece height, and takies the effective clamping area of more workbench, therefore fails popularization and application.

Task of the present utility model provides a kind of improved hold down gag, and non-workpiece pressing one end that it can make pressing plate is supported by the member of self, makes the whole elastic deformation force of generation come workpiece pressing by tightening clamp nut.

Of the present utility model from supporting the self-adjustable hold down gag, be the screw rod of L type by integral body, and be disposed with from top to bottom on the threaded section of screw rod: pressing plate combination that the back nut that screws mutually, relative suit slidably and the clamp nut that screws are mutually formed; Pressing plate combination is made up of pressing plate and rotating shaft, and the axial line rotation that pressing plate only can be does not around the shaft all have on perpendicular to the plane of screw rod axial line between pressing plate and the rotating shaft and between rotating shaft and the screw rod and relatively rotates.During workpiece pressing, the elbow part of screw rod is contained in the T type groove on the platen, does not also have on perpendicular to the plane of screw rod axial line between the two and relatively rotate; Turn back nut and clamp nut be to the relevant position, makes that pressing plate contacts swing back one end around the shaft and workpiece compacted, the face that is supported of non-workpiece pressing one end contacts slippingly with the axial outside cylinder of back nut; Tighten clamp nut again, make pressing plate combination, until the gap of eliminating each contact position with make whole generation elastic deformation force come workpiece pressing again along the slippage that faces down of the axial mixed lateral column of screw rod and back nut.When stressed, non-workpiece pressing one end on the pressing plate is supported by back nut and screw rod.By the utility model fixation workpiece, save cushion block and only taken few area of work, therefore possess efficient and convenient and make full use of the obvious advantage of the effective clamping area of workbench.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the cutaway view of a kind of concrete structure of the utility model.

Fig. 2 is the A-A profile among Fig. 1.

Fig. 3 is the B-B profile among Fig. 1.

With reference to Fig. 1, the screw rod ［ 2 ］ that integral body is the L type and has a sufficient intensity is combined into one by elbow part and threaded section, the cross section of elbow part is a T type shown in Figure 3 and consistent with the T type recess gauge lattice of institute adapted, the cross section of threaded section is non-full circle shape, is processed into two shapes with the plane ［ 8 ］ of axial section symmetry that have shown in Figure 2 usually; The screw thread that back nut ［ 6 ］ has the threaded portion phase-splitting with screw rod ［ 2 ］ to screw, axially lateral surface is the face of cylinder or polygon cylinder, screws on screw rod ［ 2 ］; Be provided with the pressing plate combination ［ 5 ］ of forming separable (or being assembled into one) with the rotating shaft ［ 4 ］ of the consistent through hole of threaded section shape of cross section of screw rod ［ 2 ］ and the pressing plate ［ 1 ］ that supporting rotating shaft ［ 4 ］, do not have on the threaded section that is sleeved on screw rod ［ 2 ］ by the through hole in the rotating shaft ［ 4 ］ with relatively rotating, and be positioned at the top of back nut ［ 6 ］, rotating shaft ［ 4 ］ can be in axial sliding along screw rod ［ 2 ］ and adapt to the needs of different crush pads, and pressing plate ［ 1 ］［ 4 ］ around the shaft is rocked on the axial outside cylinder that the face of being supported ［ 7 ］ is pressed over back nut ［ 6 ］; On the screw rod ［ 2 ］ of pressing plate combination ［ 5 ］ top, also be combined with a clamp nut ［ 3 ］.Like this, just constitute a kind of self-adjustable of supporting certainly hold down gag of form.During operation, the elbow part of screw rod ［ 2 ］ is contained in the T type groove on the platen ［ 9 ］, screw rod ［ 2 ］ slides in only can the T type groove on platen and does not have relatively rotating perpendicular to the screw axis direction; Turn back nut ［ 6 ］ and clamp nut ［ 3 ］ be to corresponding position, guarantee pressing plate ［ 1 ］ around the shaft after the corresponding angle of ［ 4 ］ swing compacted of an end and workpiece ［ 10 ］ contact, an end of non-workpiece pressing is by being supported on the axial outside cylinder that face ［ 7 ］ is pressed over back nut ［ 6 ］; Turn back nut ［ 6 ］ again makes the upper surface of back nut ［ 6 ］ and the hithermost position of pressing plate ［ 1 ］ leave certain clearance and is hindered shelves when preventing pressing plate combination ［ 5 ］ slippage downwards.Firmly tighten clamp nut ［ 3 ］ again and promote rotating shaft ［ 4 ］, and drive whole pressing plate combination ［ 5 ］ along the slippage that faces down of the axial mixed lateral column of screw rod ［ 2 ］ and back nut ［ 6 ］ by rotating shaft ［ 4 ］, until the gap of eliminating each contact position with make screw rod member generation strains such as ［ 2 ］ again, and come workpiece pressing ［ 10 ］ by the elastic deformation force, the reaction force that workpiece when compressing ［ 10 ］ produces pressing plate ［ 1 ］ one end is born by back nut ［ 6 ］ and screw rod ［ 2 ］ by the other end.When a pair of this when supporting the self-adjustable hold down gag and come workpiece pressing, just can finish the task of compressing reliably with being no less than.

Claims

1, the pressing plate that is combined into one by screw rod [2], pressing plate [1] and rotating shaft [4] makes up the self-adjustable of the supporting certainly hold down gag that [5], back nut [6] and clamp nut [3] are formed, and it is characterized in that:

The face that is supported [7] of non-workpiece pressing [10] one ends on a, the pressing plate [1] contacts slippingly with the axial outside cylinder of back nut [6] and is supported by back nut [6] and screw rod [2] when stressed,

Between b, rotating shaft [4] and the screw rod [2], between the T type groove of screw rod [2] and platen [9], between pressing plate [1] and the rotating shaft [4], all do not have on perpendicular to the plane of screw rod direction of axis line and relatively rotate.

2,, it is characterized in that back nut ［ 6 ］ has and the threaded portion phase-splitting of screw rod ［ 2 ］ screws screw thread and axial lateral surface are the face of cylinder or polygon cylinder by the self-adjustable of the supporting certainly hold down gag of claim 1 defined.

3, press the self-adjustable of the supporting certainly hold down gag of claim 1 defined, it is characterized in that screw rod ［ 2 ］ is for being the integral body of L type, the elbow part cross section is T type shown in the figure ［ 3 ］, and the threaded section cross section is non-full circle shape and has an axial plane ［ 8 ］ at least.

4, press the self-adjustable of the supporting certainly hold down gag of claim 1 and 3 defineds, it is characterized in that rotating shaft ［ 4 ］ in the pressing plate combination ［ 5 ］ is provided with the corresponding to through hole of shape of cross section with screw rod ［ 2 ］ threaded section, and when through hole penetrated screw rod thus, rotating shaft ［ 4 ］ only can be in axial sliding along screw rod ［ 2 ］.