Rotary clamping tool

Abstract

The utility model discloses a rotary type clamping tool which comprises a three-jaw chuck, a base plate and a rotating support, a rotating shaft coaxial with the base plate is arranged on the bottom face of the base plate, and clamping jaws of the three-jaw chuck clamp the tail end of the rotating shaft. The rotating support is of a horizontally-arranged n-shaped platy structure, the chassis is located in an opening of the rotating support, a through hole is formed in the opening side of a bottom plate of the rotating support in the axial direction of the rotating shaft, a second bearing is arranged in the through hole, and the rotating support is rotationally connected with the rotating shaft through the second bearing; the opening side of the top plate of the rotating support is in threaded connection with a locking screw in the axial direction of the rotating shaft, and the tail end of the locking screw penetrates through the top plate of the rotating support and is rotationally connected with a pressing plate through a first bearing. The fixture has the advantages that a plurality of fluted disc workpieces can be stably positioned and clamped at a time, the processing efficiency is improved, the structure is simple, the use is flexible and convenient, and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to clamping frock technical field, concretely is a kind of rotary clamping frock. BACKGROUND

[0002] In optical system, rotatable optical element is installed on optical turntable, can rotate with optical turntable around azimuth axis and pitch axis, so that the center of turntable and the center of collimating light source coincide and turntable axis rotates around collimating light source axis;The adjusting assembly of optical turntable includes the gear disc workpiece 800 as shown in figure Figure 1 When the circumferential tooth surface of gear disc workpiece 800 is processed, it needs to be clamped and positioned by clamping frock, and the machining frock of the thin block type cam with stepped hole disclosed in patent publication No. CN216829466U specifically discloses nut spindle frock and gland spindle frock, nut spindle frock is composed of stepped spindle I, gasket and nut, by tightening nut, nut and gasket axially press and fix cam concentrically on the water platform stepped positioning surface of stepped spindle I, but since the shaft hole 801 of the gear disc workpiece 800 has small aperture, it can only be applied to small spindle, nut and gasket, and there are problems such as unable to position and clamp multiple gear disc workpieces stably at one time, low processing efficiency and the like. UTILITY MODEL CONTENTS

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art, provide a rotary clamping frock, which can position and clamp multiple gear disc workpieces stably at one time, improve processing efficiency, has simple structure, is flexible and convenient to use, and can effectively solve the problems in the background art.

[0004] To achieve the above object, the utility model provides the following technical scheme: a rotary clamping frock, comprising three-jaw chuck, bottom disc and rotating support, the bottom surface of the bottom disc is provided with a rotating shaft coaxially arranged therewith, and the clamping jaw of the three-jaw chuck clamps the end of the rotating shaft;The rotating support is a horizontally arranged few Chinese character-shaped plate structure, the bottom disc is located in the opening of the rotating support, a through hole is formed in the opening side of the rotating support bottom plate along the axial direction of the rotating shaft, a bearing No. 2 is arranged in the through hole, and the rotating support is rotatably connected with the rotating shaft through the bearing No. 2;A locking screw is threadedly connected to the opening side of the rotating support top plate along the axial direction of the rotating shaft, the end of the locking screw penetrates the top plate of the rotating support, and the end of the locking screw is rotatably connected with a pressing plate through a bearing No. 1.

[0005] Further, the top surface of the pressing plate is provided with a connecting convex ring, and the bearing No. 1 is fixedly arranged in the connecting convex ring.

[0006] Further, a guide blind hole is formed at the center of the top surface of the base along the axial direction thereof, a positioning shaft is slidably nested in the guide blind hole, an end of the positioning shaft is provided with a shaft shoulder, a spring is arranged between the inner bottom end of the guide blind hole and the shaft shoulder of the positioning shaft, and a limiting ring with a diameter matching that of the positioning shaft is fixedly arranged at the opening end of the guide blind hole.

[0007] Further, the top end of the positioning shaft is in a ball head structure, and a semispherical groove is formed in the bottom surface of the pressing plate at a position corresponding to the positioning shaft.

[0008] Compared with the prior art, the beneficial effects of the utility model are that: the rotary clamping tool can clamp multiple gear disc workpieces at one time by rotating and tightening the locking screw, and can stably clamp and position the multiple gear disc workpieces at one time by cooperating with the liftable positioning shaft, thereby improving the machining efficiency and facilitating the positioning of the gear disc workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is a structural diagram of the utility model.

[0010] Figure 2 It is a structural diagram of the utility model.

[0011] Figure 3 It is a front view of the utility model.

[0012] Figure 4 It is a structural diagram of the utility model.

[0013] Figure 5 It is a structural diagram of the utility model.

[0014] Figure 6 It is a sectional view of the utility model.

[0015] Figure 7 It is Figure 6 It is a partial enlarged view.

[0016] Figure 8 It is a structural diagram of the utility model in use.

[0017] In the figure: 1, three-jaw chuck; 2, base; 21, rotating shaft; 22, guide blind hole; 23, positioning shaft; 24, spring; 25, limiting ring; 3, rotating support; 4, pressing plate; 41, connecting convex ring; 42, semispherical groove; 5, locking screw; 6, bearing one; 7, bearing two; 800, gear disc workpiece; 801, shaft hole. DETAILED DESCRIPTION

[0018] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts under the premise that no creative efforts are made, belong to the scope of protection of the present application. Embodiments

[0019] Please refer to Figures 1-8 The utility model provides a kind of technical scheme: a rotary clamping tool, including three-jaw chuck 1, base 2 and rotating support 3, the bottom surface of base 2 is equipped with coaxially with it and is arranged rotating shaft 21, the jaw of three-jaw chuck 1 clamps the end of rotating shaft 21;Rotating support 3 is horizontally arranged and is in the shape of a Chinese character, and base 2 is located in the opening of rotating support 3, and the opening side of rotating support 3 bottom plate is provided with through hole along the axial direction of rotating shaft 21, bearing two 7 is arranged in the through hole, and rotating support 3 is rotatably connected with rotating shaft 21 by bearing two 7;Locking screw 5 is threadedly connected with the opening side of rotating support 3 top plate along the axial direction of rotating shaft 21, the end of locking screw 5 penetrates the top plate of rotating support 3, and the end of locking screw 5 is rotatably connected with pressing plate 4 by bearing one 6.

[0020] The center of the top surface of base 2 is provided with guide blind hole 22 along its axial direction, and positioning shaft 23 is slidably nested in guide blind hole 22, the end of positioning shaft 23 is provided with shaft shoulder, and spring 24 is arranged between the inner bottom end of guide blind hole 22 and the shaft shoulder of positioning shaft 23, and the opening end of guide blind hole 22 is also fixedly provided with limiting ring 25 matched with the diameter of positioning shaft 23.

[0021] Working principle:

[0022] Three-jaw chuck 1 is fixed on the workbench of vertical lathe, a plurality of toothed disc workpieces 800 are stacked on base 2, and the shaft hole 801 of toothed disc workpiece 800 is nested on positioning shaft 23, pressing plate 4 is pressed on the uppermost toothed disc workpiece 800 by screwing locking screw 5, and the top end of positioning shaft 23 is pressed down by the bottom surface of pressing plate 4, and locking screw 5 is continuously screwed until pressing plate 4 is pressed tightly on toothed disc workpiece 800;The circumferential tooth surface of toothed disc workpiece 800 is machined by the cutter of vertical lathe, and the cutter rod pushes rotating support 3 to rotate when the cutter rod touches rotating support 3, so that rotating support 3 is displaced.

[0023] When machining is completed, locking screw 5 is unscrewed in reverse to loosen pressing plate 4, and then toothed disc workpiece 800 is removed, and positioning shaft 23 is restored to the original position by the elastic force of spring 24.

[0024] Further, the top surface of the pressing plate 4 is provided with a connecting convex ring 41, and the bearing one 6 is fixedly arranged in the connecting convex ring 41.

[0025] Further, the top end of the positioning shaft 23 is a ball head structure, and the bottom surface of the pressing plate 4 is provided with a semispherical groove 42 at a position corresponding to the positioning shaft 23, and the ball head structure of the top of the positioning shaft 23 and the semispherical groove 42 of the bottom surface of the pressing plate 4 are matched with each other, so that the positioning shaft 23 is stably and reliably lowered.

[0026] The rotating clamping tool disclosed in the embodiment can clamp a plurality of gear disc workpieces 800 at one time by screwing the locking screw 5, and can stably and clampingly position the plurality of gear disc workpieces 800 at one time by cooperating with the liftable positioning shaft 23, so that the machining efficiency is improved, and the gear disc workpieces 800 are conveniently positioned.

[0027] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A rotary chucking tool comprising a three-jaw chuck, a base plate and a rotating support, characterized in that: The bottom surface of the bottom disc is provided with a rotating shaft coaxially arranged therewith, and the clamping claws of the three-claw chuck clamp the end of the rotating shaft; the rotating support is horizontally arranged in a few-shaped plate structure, the bottom disc is located in the opening of the rotating support, a through hole is formed in the opening side of the bottom plate of the rotating support along the axial direction of the rotating shaft, a bearing two is arranged in the through hole, and the rotating support is rotationally connected with the rotating shaft through the bearing two; a locking screw is threadedly connected to the opening side of the top plate of the rotating support along the axial direction of the rotating shaft, the end of the locking screw penetrates through the top plate of the rotating support, and the end of the locking screw is rotationally connected with a pressing plate through a bearing one.

2. A rotary chucking tool according to claim 1, characterized in that: The top surface of the pressing plate is provided with a connecting convex ring, and the bearing one is fixedly arranged in the connecting convex ring.

3. A rotary chucking tool according to claim 1, characterized in that: A guide blind hole is formed in the center of the top surface of the bottom disc along the axial direction thereof, a positioning shaft is slidably nested in the guide blind hole, the end of the positioning shaft is provided with a shaft shoulder, a spring is arranged between the inner bottom end of the guide blind hole and the shaft shoulder of the positioning shaft, and a limiting ring with a diameter matching that of the positioning shaft is fixedly arranged at the opening end of the guide blind hole.

4. A rotary clamping fixture according to claim 3, wherein: The top end of the positioning shaft is a ball head structure, and a semispherical groove is formed in the bottom surface of the pressing plate at a position corresponding to the positioning shaft.

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