CN201423543Y

CN201423543Y - Clamping mechanism of thread cutting machine

Info

Publication number: CN201423543Y
Application number: CN2009200442942U
Authority: CN
Inventors: 燕明; 燕晓伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-08
Filing date: 2009-06-08
Publication date: 2010-03-17
Anticipated expiration: 2019-06-08

Abstract

The utility model relates to a clamping mechanism of thread cutting machine, which comprises a jaw frame, a lead screw, a nut, a clamping piece, a vice base, a slide block and a locking ring. Two convex block-shaped parallel guide rails are arranged on the vice base, two circular holes are arranged on the two ends of the vice base in the axial direction, the lead screw penetrates through the circular holes on the two ends and is in the rotating state, the locking ring is arranged on the lead screw and is matched with the axial side edge of the vice base to limit the axial sliding of the lead screw, the slide block is arranged on the vice base and engaged with the convex block-shaped parallel guide rails, the jaw frame is arranged on the two convex block-shaped parallel guide rails of the vice base through the slide matching of positive and negative nuts on the lead screw, the jaw frame is provided with four profiled grooves with two opposite to the other two, the clamping piece in theskewed tooth shape is arranged on the profiled grooves, and the oblique planes of the two skewed teeth on the upper end are opposite to the oblique planes of the two skewed teeth on the lower end. Theutility model has good effect on the clamping of the reinforcement bar, is suitable for clamping of different types of reinforcement bars, and can also guarantee that the performance of the reinforcement bars is not affected.

Description

A kind of thread cutting machine clamp mechanism

Technical field

The utility model relates to a kind of lathe and steps up mechanism, particularly a kind of roll-down type thread cutting machine clamp mechanism.

Background technology

In the civil construction field, reinforcing bar is that armored concrete is used and the prestressed reinforced concrete steel, reinforcing bar can bear pulling force, increase mechanical strength, it is important that the civil construction field that is connected of reinforcing bar causes the pass, it has been directly connected to building intensity and durability, and traditional connection method has splicing processes and welding, and the intensity with splicing processes and its connection of welding for special steel has been difficult to adapt to the needs of present building.The screw thread steel connection method is to replace traditional splicing processes and welding gradually at present, fast with its connection speed, stability is waited until increasing application, and it is bigger in the site operation owing to the bar diameter scope, and reinforcing bar also divides selenodont, slub type arranged, and vertical rib arranged and do not have model such as vertical rib, and the existing machine tool clamp mechanism clamps reinforcing bar and can neutrality be exerted an influence, perhaps can't clamp this type of reinforcing bar, cause crudy to be guaranteed.

Summary of the invention

The purpose of this utility model provides a kind of roll-down type thread cutting machine clamp mechanism, and it is effective to clamp reinforcing bar, is fit to clamp dissimilar reinforcing bars, can guarantee that again its neutrality is impregnable.

The utility model provides a kind of thread cutting machine clamp mechanism, by the jaw frame, screw mandrel, nut, clamp clip, the vice base, slide block, retaining ring is formed, vice base upper end is provided with two projection shape closed slides, vice base axial location is set to two circular holes, screw mandrel is rotation status by the two ends circular hole, retaining ring is arranged on the screw mandrel with the vice datum axle and endwisely slips to the side restriction screw mandrel that matches, slide block is sliding and joins attitude and be installed on the vice base, slide block adopts the L type, when slider wear, conveniently slide block is changed, design of L type and projection shape closed slide are meshed, the jaw frame is joined on two projection shape closed slides that are installed in the vice base by the positive and negative slide nut on the screw mandrel, screw mandrel drives positive and negative nut and realizes clamping reinforcing bar and unclamp reinforcing bar, and feed screw nut's self-locking performance is good, can clamp the different model reinforcing bar, and guarantee that the reinforcing bar level is constant to the center, the jaw frame is provided with four type grooves, and the type groove is corresponding in twos, on the type groove clamp clip is set.

As a kind of improvement of the present utility model:

For the v type is provided with, v type angle is set to 120 ° between the described jaw frame amphitypy groove.Take out the fixing reinforcing bar best results of clamp clip under this angle through test of many times.

Little straight trough is opened at described jaw frame amphitypy groove v type mouth center, and the benefit that little straight trough is set like this is to utilize the vertical rib of reinforcing bar with longitudinal ribs, prevents the reinforcing bar rotation.

The Surface Machining of described clamp clip is the helical teeth shape, has strengthened it and clamp effect when clamping reinforcing bar, adds and prevents that reinforcing bar from moving man-hour reinforcing bar being carried out the roll forming straight thread.

The inclined-plane of two helical teeth in the upper end of described clamp clip and two helical teeth in lower end is opposite, and this is provided with to be beneficial to and clamps slub type and no reinforcing bar with longitudinal ribs.

Description of drawings

Fig. 1 is the structural representation of roll-down type thread cutting machine clamp mechanism

Fig. 2 is the internals schematic diagram of roll-down type thread cutting machine clamp mechanism

Fig. 3 is the screw mandrel and the nut connection diagram of roll-down type thread cutting machine clamp mechanism

Fig. 4 is a clamp clip schematic diagram in the roll-down type thread cutting machine clamp mechanism.

Member is among the figure: 1-clamp clip, 2-jaw frame, 3-screw mandrel, 4-retaining ring, 5-vice base, 6-slide block, 7-nut.

The specific embodiment

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

As Fig. 1, this roll-down type thread cutting machine clamp mechanism is by by jaw frame 2, screw mandrel 3, nut 7, clamp clip 1, vice base 5, slide block 6, retaining ring 4 is formed, vice base 5 upper ends are provided with two projection shape closed slides, jaw frame 2 is by slide block and is installed on the vice base 5 sliding joining, screw mandrel 3 runs through vice base 5 two ends circular holes and is rotation status, retaining ring 4 is arranged on the screw mandrel 3 the restriction screw mandrel 3 that matches with vice base 5 axial side and endwisely slips, only allow screw mandrel 3 rotate, slide block 6 is the L type, when slide block 6 wearing and tearing, conveniently slide block 6 is changed, the slide block 6 and the projection shape closed slide of the design of L type are meshed, 2 sliding joining on two projection shape closed slides that are installed in vice base 5 of jaw frame.

As Fig. 2, Fig. 3, Fig. 4, two sections positive and negative screw threads of processing on screw mandrel, positive and negative nut 7 is installed in the jaw frame 2 by screw thread, during rotary screw 3, jaw frame 2 does not participate in rotation, causes nut 7 not rotate yet, only do first motion along screw mandrel 3 axis, because the effect of positive and negative screw thread, 7 on two nuts are done relative motion, and nut 7 drives jaw frame 2 and does to slide relatively along projection shape closed slide.Four clamp clips 1 are fixed in the jaw frame 2 type grooves, V-shaped setting between the clamp clip 1, V-type angle are 120 °, when turning clockwise screw mandrel 3, two jaw framves 2 are being with clamp clip 1 to draw close to the center, do clamping the reinforcing bar action, when being rotated counterclockwise screw mandrel 3, two jaw framves 2 are being with clamp clip 1 to leave the center, unclamp reinforcing bar, screw mandrel 3 is realized clamping reinforcing bar and is unclamped reinforcing bar by driving positive and negative nut 7, when it clamps the reinforcing bar of different model, guarantees that the level of reinforcing bar is constant to the center.Little straight trough is offered in v type mouth center at described jaw frame 2 amphitypy grooves, can utilize the vertical rib of reinforcing bar with longitudinal ribs, prevent the reinforcing bar rotation, clamp clip 1 is processed as the helical teeth shape, the inclined-plane of two helical teeth of its two helical teeth and lower ends in upper end is opposite, the reinforcing bar that this mode helps clamping slub type and do not have vertical rib.

In sum, the roll-down type clamping mechanism of thread cutting machine, have applied widely, the folder Tight stability is high, and centering is good, has improved efficient and the quality of processing.

Claims

1, a kind of roll-down type thread cutting machine clamp mechanism, comprise jaw frame (2), screw mandrel (3), nut (7), clamp clip (1), vice base (5), slide block (6), it is characterized in that: also include retaining ring (4), described vice base (5) upper end is provided with two projection shape closed slides, two circular holes are established at vice base (5) axial location two ends, screw mandrel (3) is rotation status by the two ends circular hole, described retaining ring (4) is arranged on the last restriction screw mandrel (3) that matches with the axial side of vice base (5) of screw mandrel (3) and endwisely slips, slide block (6) is installed on the vice base (5), and mesh with projection shape closed slide, described jaw frame (2) is joined on two projection shape closed slides that are installed in vice base (5) by the positive and negative nut (7) on the screw mandrel (4) is sliding, jaw frame (2) is provided with four type grooves, the type groove is corresponding in twos, and clamp clip (1) is set on the type groove.

2, a kind of roll-down type thread cutting machine clamp mechanism according to claim 1 is characterized in that: for the v type is provided with, v type angle is set to 120 ° between described jaw frame (2) the amphitypy groove.

3, a kind of roll-down type thread cutting machine clamp mechanism according to claim 2 is characterized in that: described jaw frame (2) amphitypy groove v type mouth center has little straight trough.

4, according to claim 1 or 2 or 3 described a kind of roll-down type thread cutting machine clamp mechanism, it is characterized in that: the Surface Machining of described clamp clip (1) is the helical teeth shape.

5, a kind of roll-down type thread cutting machine clamp mechanism according to claim 4, it is characterized in that: the inclined-plane of two helical teeth in the upper end of described clamp clip (1) and two helical teeth in lower end is opposite.