CN201329460Y

CN201329460Y - Reaming and tapping tool with ratchet wheel

Info

Publication number: CN201329460Y
Application number: CNU2008201714189U
Authority: CN
Inventors: 冯刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-29
Filing date: 2008-12-29
Publication date: 2009-10-21
Anticipated expiration: 2018-12-29

Abstract

The utility model discloses a reaming and tapping tool with a ratchet wheel, belongs to the technical field of clamp machining tools, and comprises a housing with a left handle and a right handle; a ratchet wheel is in fit arrangement in a circular inner cavity of the housing; a clamping left claw and a clamping right claw are arranged at the center of the ratchet wheel; a groove is formed in a position corresponding to the left handle on the left side of the housing; a compression spring is installed in the groove; a fixture block in the shape of a right-angled trapezoid is arranged at one end of the compression spring facing the circular inner cavity of the housing; and an oblique central plane and an straight plane on the long bottom of the fixture block are respectively matched with an oblique tooth surface and a flat tooth surface of the ratchet wheel. The reaming and tapping tool with a ratchet wheel has the advantages that not only is the machining precision high but also the working hours are saved, half of the operation time or so can be saved, and the processing aging is greatly improved.

Description

Fraising, the tapping tool of band ratchet

Technical field

The utility model discloses a kind of fraising, tapping tool, belong to the technical field that clamps machining tool with ratchet.

Background technology

When pincers worker is carried out craft processing fraising, tapping with existing fraising, tapping tool, when hand turns over certain angle, can produce the motion dead angle, this moment, hand must be taken away from handle, made hand get back to original angle, continued rotary manipulation again.So after the repeatable operation, operate because palmistry is staggered mutually, should not control the axiality of machining hole, movement locus is difficult to be overlapped.Therefore, the perpendicularity of existing fraising, the more difficult control hole of tapping tool, roughness etc., and consume man-hour.

The utility model content

In order to address the above problem, the utility model provides fraising, the tapping tool of the band ratchet of a kind of hole machining accuracy height and saving working hour.

To achieve these goals, the technical scheme that the utility model adopted is:

A kind of fraising with ratchet, tapping tool comprise the housing that has left handle, right handles, cooperate in the round cavity of described housing a ratchet is installed, and the center of ratchet is equipped with clamping left side tiger, the right tiger of clamping; Offer groove on the left of the housing and with the corresponding position of left handle, compression spring is installed in the groove, compression spring is equipped with at right angles trapezoidal fixture block on the round cavity end of housing, and the oblique girdle plane of fixture block, straight plane, the long end match with the pitch face of ratchet, the flat flank of tooth respectively.

Described clamping left side tiger, the right tiger cooperation of clamping are installed in the slot that is arranged in the ratchet center.

Described left handle is connected by internal thread with housing, and the other end of compression spring is fixedly mounted on the left handle.

The utility model effectively combines ratchet, compression spring, rectangular trapezoidal fixture block, when the fixture block in left and right handle drives housing rotates counterclockwise, fixture block is under the effect of the elastic-restoring force of compression spring, its straight plane, long end will prop up the flat flank of tooth of ratchet, rotate thereby drive ratchet; When the fixture block in left and right handle drives housing clockwise rotated, under the mating reaction of the pitch face of the oblique girdle plane of fixture block and ratchet, it is motionless that ratchet rests on original position, thereby realize when hands movement arrives the dead angle, handle can be decontroled, directly behind the rotary handle, just rotary manipulation can be continued.Therefore, fraising, the tapping tool of the utility model band ratchet, not only the operating time of half approximately can be saved in machining accuracy height and saving working hour, has significantly improved hardness ag(e)ing.

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the A portion enlarged drawing among Fig. 1.

The specific embodiment

As Fig. 1, Fig. 2, shown in Figure 3, fraising, the tapping tool of the utility model band ratchet, comprise the housing 5 that has left handle 3a, right handles 3b, cooperate in the round cavity 8 of housing 5 ratchet 1 is installed that the center of ratchet 1 is equipped with clamping left side tiger 6, the right tiger 7 of clamping.Housing 5 left sides and offer groove 9 with the corresponding position of left handle 3a, compression spring 2 is installed in the groove 9, compression spring 2 is equipped with at right angles trapezoidal fixture block 4 on round cavity 8 ends of housing 5, and the oblique girdle plane 10 of fixture block 4, straight plane 11, the long end match with pitch face 12, the flat flank of tooth 13 of ratchet 1 respectively.

The utility model has utilized the principle of ratchet mechanism transmission, and ratchet 1, compression spring 2, rectangular trapezoidal fixture block 4 are effectively combined.When the fixture block 4 in left handle 3a, right handles 3b drive housing 5 rotated counterclockwise, fixture block 4 was under the effect of the elastic-restoring force of compression spring 2, and its straight plane 11, long end will prop up the flat flank of tooth 13 of ratchet 1, rotated thereby drive ratchet 1; When the fixture block 4 in left handle 3a, right handles 3b drive housing 5 clockwise rotates, under the mating reaction of the oblique girdle plane 10 of fixture block 4 and the pitch face 12 of ratchet 1, it is motionless that ratchet 1 rests on original position, thereby realize when hands movement arrives the dead angle, can decontrol left handle 3a, right handles 3b, directly behind revolution left handle 3a, the right handles 3b, just can continue rotary manipulation.Therefore, fraising, the tapping tool of the utility model band ratchet, not only the operating time of half approximately can be saved in machining accuracy height and saving working hour, has significantly improved hardness ag(e)ing.

As further improvement of the utility model, clamping left side tiger 6, right tiger 7 cooperations of clamping are installed in the slot 14 that is arranged in ratchet 1 center, so design make between ratchet 1 and clamping left side tiger 6, the right tiger 7 of clamping cooperate better, make ratchet 1 can be better, more stable right tiger 7 rotations of drive clamping left side tiger 6, clamping.

Further improve as of the present utility model, left handle 3a and housing 5 are connected by internal thread, and the other end of compression spring 2 is fixedly mounted on the left handle 3a again.As long as by rotation left handle 3a, just can realize the adjusting of compression spring 2 elastic force sizes, promptly change the tightness between fixture block 4 and the ratchet 1.

Operation principle of the present utility model is as follows:

Reamer shank or screw tap shank are inserted between clamping left side tiger 6 and the right tiger 7 of clamping, two hands are held left handle 3a, right handles 3b respectively, the guiding position of reamer or screw tap is put among the existing unthreaded hole, rotated counterclockwise left handle 3a, right handles 3b then, drive housing 5 then and rotate together.When the fixture block 4 that is positioned at housing 5 rotates counterclockwise with housing 5, fixture block 4 is under the effect of the elastic-restoring force of compression spring 2, its straight plane 11, long end will prop up the flat flank of tooth 13 of ratchet 1, thereby driving ratchet 1 rotates, the rotation of ratchet 1 drives clamping left side tiger 6 again and the right tiger 7 of clamping is rotated together, to realize the function of fraising or tapping.

When the motion dead angle appearred in hand, hand need not be decontroled left handle 3a, right handles 3b, but after directly turning round (clockwise rotating), continued to rotate counterclockwise left handle 3a, right handles 3b again, to proceed fraising or tapping.When the fixture block 4 in left handle 3a, right handles 3b drive housing 5 clockwise rotates, under the mating reaction of the oblique girdle plane 10 of fixture block 4 and the pitch face 12 of ratchet 1, it is motionless that ratchet 1 rests on original position, thereby realize when hands movement arrives the dead angle, can decontrol left handle 3a, right handles 3b, but directly turn round left handle 3a, right handles 3b, make fixture block 4 turn to corresponding appropriate location after, rotate counterclockwise left handle 3a, right handles 3b again, to proceed fraising or tapping.So move in circles after the operation, finally finish fraising or tapping.

In a word, the utility model machining accuracy height, simple to operate, saving working hour, and simple for production, cost of manufacture is low.The utility model is suitable for clamping occasions such as small lot batch manufacture fraising in the process operation, tapping.

The foregoing description only is used to the inventive concept of the present utility model of explaining, but not to the qualification of the utility model rights protection, allly utilizes this design that the utility model is carried out the change of unsubstantiality, all should fall into protection domain of the present utility model.

Claims

1, a kind of fraising, tapping tool with ratchet, comprise the housing (5) that has left handle (3a), right handles (3b), it is characterized in that: cooperate in the round cavity (8) of described housing (5) ratchet (1) is installed, the center of ratchet (1) is equipped with clamping left side tiger (6), the right tiger (7) of clamping; Offer groove (9) on the left of the housing (5) and with the corresponding position of left handle (3a), compression spring (2) is installed in the groove (9), compression spring (2) is equipped with at right angles trapezoidal fixture block (4) on round cavity (8) end of housing (5), and the oblique girdle plane (10) of fixture block (4), long straight plane, the end (11) match with the pitch face (12) of ratchet (1), the flat flank of tooth (13) respectively.

2, according to claim 1 with fraising, the tapping tool of ratchet, it is characterized in that: described clamping left side tiger (6), the right tiger of clamping (7) cooperation are installed in the slot (14) that is arranged in ratchet (1) center.

3, according to claim 1 with fraising, the tapping tool of ratchet, it is characterized in that: described left handle (3a) is connected by internal thread with housing (5), and the other end of compression spring (2) is fixedly mounted on the left handle (3a).