CN2338120Y

CN2338120Y - Machine for thread cutting inner screw of polygon screw nuts

Info

Publication number: CN2338120Y
Application number: CN 98224714
Authority: CN
Inventors: 廖增明
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-07-29
Filing date: 1998-07-29
Publication date: 1999-09-15
Anticipated expiration: 2008-07-29

Abstract

The utility model provides a polygon nut internal thread forming machine, which is characterized in that a groove hole which is extended downwards from the inner side of the shaft hole of a rotating shaft is provided with an appropriate width. A chip removal space is formed by that the lower sides of the grooves of two seat bodies are downwards connected with a tilted concave part. An attacking tooth positioning device is connected with a connecting seat by the shaft core of a cylinder. The connecting seat is connected with a positioning push rod which is provided with a positioning groove hole. A guiding groove which is adjacent with the front end of the push rod is provided with a nut material component. The nut material component can be pushed forwards to the front side of the attacking tooth part of the screw tap of the front side of the guiding groove by the positioning push rod which is driven by the forward shift of the shaft core of the cylinder. The screw tap can automatically position and penetrate the nut material component along the attacking tooth part, and the internal thread forming can be completed.

Description

Polygonal nut forming internal threads machine

The utility model relates to a kind of screw thread cutting equipment, particularly a kind of equipment of using the screw tap tapping on workpiece hole.

The conventional nut forming internal threads as shown in Figure 1, the processing seat 8 that has leading groove 86 by 80 lockings one of four screws, processing seat 8 is made up of two

pedestals

81,82, establishing a slotted eye 871 in body headstock 87 can cooperate the slotted eye 831 established in the rotating shaft 83 to carry out tapping with the tapping portion 92 of the tap 9 that wears a tool arc portion 91, nut materials and parts 85 after the tapping can be fallen into the default material collecting tank of board (figure does not show) along the arc portion 91 of tap 9 to bottom offset, there is following disappearance in above-mentioned make-up machine:

1, because tap 9 is to locate to rotate with rotating shaft, when nut materials and parts 85 when leading groove 86 is pushed to the tapping portion 92 direction application of forces of tap 9 by push rod 84, nut materials and parts 85 slightly tilt easily to cause the inaccurate even fracture of tapping, cause the materials and parts defective products and increase the tap loss;

2, easily pile up processing bits material in the leading groove 86 of processing seat, influence the propelling movement of leading groove 86 precision and nut materials and parts 85;

3, when assembling or replacing tap 9, except that must dismounting processing the pedestal 81 of seat 8, also must dismantle the cover plate (figure does not show) of power block 87, again the tap 9 of tool arc portion 91 is worn the slotted eye 831 of rotating shaft 83 and the slotted eye 871 of power block 87 is locked pedestal 81 again, the last cover plate of locking power block 87 again, quite inconvenience;

If the coarse finished product of 4 tappings is used on the computer connector, tends to influence the quality of connector, even the higher computer connector main body of cost can't be used.

The purpose of this utility model is that a kind of improved polygonal nut forming internal threads machine will be provided, and it makes the finished product accuracy height, and tap had than the long life, and assembly and disassembly is convenient, and is beneficial to the interior chip removal of leading groove of processing seat.

The utility model is achieved in that the inboard slotted eye that extends of rotating shaft center's axis hole has suitable width downwards, but forms the space that a sacrificial vessel has the tap shift reciprocately of arc portion; Each connects an oblique recess downwards the groove below of two pedestals of processing seat, and relative engagement forms a chip removal space; The tapping positioner is that the axle center with cylinder links a connecting base, connecting base links the localization handspike of a front side tool location notch hole, nut materials and parts in the leading groove of the adjacent processing seat of the front end of localization handspike, but the tapping portion front side of nut materials and parts to the tap that is positioned at leading groove front side passed in the axle center of cylinder start interlock localization handspike forward forward, the tap front end stretches into the interior suitably distance of location notch hole of localization handspike, the localization handspike of the action drives backward reversion original position in cylinder axle center.

Tap can utilize the space of rotating shaft voluntarily along with the capable tapping of tapping position shift-in during its tapping of the utility model mat, therefore but the unprocessed part of tap mat nut materials and parts and correcting center, accuracy height not only, and tap more can not rupture yet, thereby have than the long life, and avoid influencing efficient because of changing tap; The tap assembly and disassembly is convenient, the pedestal that need only dismantle processing seat front side can import the slotted eye that it has proper width along the axis hole of rotating shaft with the curved arc of tap, and the groove that some nut materials and parts are directly inserted the rear side pedestal of processing seat afterwards can be inserted in the non-tapping position of tap, and then with front side pedestal and the locking of rear side pedestal; Each connects the groove below of two pedestals of its processing seat an oblique recess relative engagement downwards and forms a chip removal space, is beneficial to process the detritus that tapping the produced eliminating in the leading groove of seat.

The concrete structure of utility model is provided by following examples and accompanying drawing thereof.

Fig. 1 is that the part axle of conventional nut forming internal threads machine is surveyed schematic diagram.

Fig. 2 is the utility model axonometric drawing.

Fig. 3 is that a pedestal of the utility model processing seat is taken the rear axle mapping apart.

Fig. 4 is that the utility model localization handspike is not pushed the nut materials and parts to the tap cross-sectional schematic.

To be the utility model localization handspike push the nut materials and parts to tap and nut materials and parts to Fig. 5 has pushed the tapping portion of tap and the tap cross-sectional schematic of displacement backward.

Fig. 6 be Fig. 5 move finish after tap rotate voluntarily and cross-sectional schematic is finished in the displacement tapping.

With reference to Fig. 2,3,4,5,6, polygonal nut forming internal threads machine includes:

One rotating shaft 1, its rear side has the power transmission shaft 61 that embedding hole 11 can be nested in board 6, can rotate along with power transmission shaft 61, and rotating shaft 1 anterior end surface has a central shaft hole 12, axis hole 12 inboard extensions one downwards run through the slotted eye 13 of rotating shaft 1 lower end, for the tap 7 that wears a tool arc portion 71;

One processing seat 2, be located at the predetermined position of board 6 tops, processing seat 2 is made up of two

pedestals

21,22, two

pedestals

21,22 respectively have groove 211,221 and form a leading groove 20 relatively, import its predetermined position for nut materials and parts 5, leading groove 20 can stretch into suitable distance for the tapping portion 72 of tap 7;

One pay-off 3, be to go into a feeding track 31 for 5 delivery in regular turn of nut materials and parts, cooperate the reciprocating action of the gear-stopping bar 33 that the axle center (figure do not show) of a cylinder 32 linked again and whether control stop nut materials and parts 5 in good time, can control the predetermined position in the leading groove 20 whether the nut materials and parts import processing seat 2 relatively, for the propelling movement of the localization handspike 42 of tapping positioner 4;

One tapping positioner 4 includes the localization handspike 42 of an axle center that is subjected to cylinder 41 (figure does not show) interlock;

Main feature of the present utility model is: rotating shaft 1, but the inboard slotted eye 13 that extends downwards of its central shaft hole 12 is to have proper width to form the space 10 that sacrificial vessel has the tap 7 of arc portion 71 to move back and forth; Each downward connection one oblique recess 212,222 of groove 211,221 belows of two

pedestals

21,22 of processing seat 2 forms a chip removal 200 with relative engagement, is beneficial to tapping generation detritus eliminating in the leading groove 20 of processing seat 2; Tapping positioner 4 links a connecting base 43 with the axle center (figure does not show) of cylinder 41, connecting base 43 links the localization handspike 42 of a front side tool location notch hole 420, just make the nut materials and parts 5 in the leading groove 20 of the adjacent importings processing of localization handspike 42 front ends 421 seat 2, but tapping portion 72 front sides 721 of nut materials and parts 5 to the tap 7 that is positioned at leading groove 20 front sides are passed in mat cylinder 41 axle center start interlock localization handspike 42 forward forward, make tap 7 front ends 721 stretch into the location notch hole 420 interior suitably distances of localization handspike 42, move backward in the axle center of mat cylinder 41, then can make localization handspike 42 reversion original positions;

The above-mentioned member of mat, when the need assembling screw attacks 7, need only dismantle the pedestal 21 of processing seat 2 front sides, the arc portion 71 of tap 7 can be imported it along the axis hole 11 of rotating shaft 1 and have the slotted eye 12 of proper width, the groove 221 (as Fig. 4) of processing seat 2 rear side pedestals 22 is directly inserted after can being inserted in some nut materials and parts 5 in the non-tapping position 73 of tap 7, and is again that front side pedestal 21 and rear side pedestal 22 is sealed fixing; When the power transmission shaft 61 of board 6 rotates, promptly rotate relative to interlock tap 7; When the nut materials and parts 5 that import processing seat 2 are pushed nut materials and parts 5 forward by the localization handspike 42 of tapping positioner 4, make nut materials and parts 5 and tap 7 displacement forward, the thrust of mat localization handspike 42 makes nut materials and parts 5 enter tapping portion 72 leading edges (as Fig. 5) of the tap 7 in the rotation, at this moment, nut materials and parts 5 are resisted against leading groove 20 sides and can rotate, tap 7 is attacked along its tapping portion 72 and is worn nut materials and parts 5, and make nut materials and parts 5 enter the non-tapping of tap 7 rear sides position 73, make its tapping portion 72 also penetrate in the location notch hole 420 of localization handspike 42 (as Fig. 6) simultaneously and finish the tapping action; After localization handspike 42 returned to original position, the nut materials and parts 5 of feeding track 31 belows imported the precalculated position in the leading groove 20 of processing seat 2 again thereupon, repeated above-mentioned tapping action again; Wear the full nut materials and parts 5 of tapping when the non-tapping of tap 7 rear sides position 73, materials and parts 5 can drop out rotating shaft 1 below slotted eye 13 to downslide along the arc portion 71 of tap 7 and fall in the material collecting tank 60 of board 6 tops.

The shape that the groove 211,221 of above-mentioned two

pedestals

21,22 is formed the leading groove 20 that the back forms is the polygon-shaped of attaching nut materials and parts 5 and being shaped, the nut materials and parts 5 that are positioned at leading groove 20 leading that is positioned, the non-tapping position 73 of tap 7 sheathed nut materials and parts 5 can be along with tap rotates yet.

The location notch hole 420 of the localization handspike that connecting base 43 linked 42 of tapping device 4 is polygonal shapes of attaching nut materials and parts 5 and being shaped, and the length of location notch hole 420 is the length that the tapping portion 72 of tap 7 stretches at least.

Claims

1, a kind of polygonal nut forming internal threads machine comprises rotating shaft, processing seat, pay-off and tapping positioner, it is characterized in that:

A. the inboard slotted eye that extends downwards of rotating shaft center's axis hole has suitable width, but forms the space that a sacrificial vessel has the tap shift reciprocately of arc portion;

B. each connects an oblique recess downwards below the groove of two pedestals of processing seat, and relative engagement forms a chip removal space;

C. the tapping positioner is that axle center with cylinder links a connecting base, connecting base links the localization handspike of a front side tool location notch hole, nut materials and parts in the leading groove of the adjacent processing seat of the front end of localization handspike, but the tapping portion front side of nut materials and parts to the tap that is positioned at leading groove front side passed in the axle center of cylinder start interlock localization handspike forward forward, the tap front end stretches into the interior suitably distance of location notch hole of localization handspike, the localization handspike of the action drives backward reversion original position in cylinder axle center.

2, forming internal threads machine according to claim 1, the shape that the groove that it is characterized in that processing two pedestals of seat is formed the leading groove that the back forms is the polygon-shaped of attaching nut materials and parts and being shaped, the nut materials and parts that are positioned at the leading groove leading that is positioned, the non-tapping position of tap sheathed nut materials and parts can be along with tap rotates yet.

3, forming internal threads machine according to claim 1, the location notch hole that it is characterized in that the localization handspike that the connecting base of tapping positioner links is the polygonal shape of attaching nut materials and parts and being shaped, and the length of location notch hole is the length that the tapping portion of tap stretches at least.