CN216298192U - Universal hole tapping clamping corrector - Google Patents

Abstract

The application provides a universal hole tapping centre gripping unscrambler includes: the positioning claw is used for determining the perpendicularity of the screw tap and limiting the degree of freedom of the screw tap; the positioning sleeve is connected with the positioning claw; the axis of the positioning sleeve and the axis of the positioning claw are on the same central line; the application provides a clamping corrector for assisting manual tapping and ensuring tapping quality; the clamp holder can ensure the verticality in the tapping process and the stability of the tapping process under the manual force application, and improve the tapping quality to meet various tapping processing requirements and thread use requirements.

Description

Universal hole tapping clamping corrector

Technical Field

The application relates to the technical field of part machining, especially, relate to a universal hole tapping centre gripping unscrambler.

Background

The thread on the workpiece has an external thread and an internal thread. At present, the internal thread can be processed by a tapping machine or by a manual mode; when the shape of a workpiece is special and the tapping machine is not suitable for use, the workpiece is generally processed in a manual mode.

The problems of inclined tapping and low quality of formed threads are easily caused by visual inspection of tapping angles and unbalanced force application in manual processing; and the production efficiency is low and the labor intensity is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problem, the present application provides a universal hole tapping centre gripping unscrambler, includes:

the positioning claw is used for determining the perpendicularity of the screw tap and limiting the degree of freedom of the screw tap;

the positioning sleeve is connected with the positioning claw; the axis of the positioning sleeve and the axis of the positioning claw are on the same central line.

Preferably, the positioning claws are arranged on the positioning sleeve based on a preset interval; and a rotation center is formed between the positioning claws and is used for arranging the screw tap.

Preferably, a through hole is arranged on the positioning sleeve; wherein the through hole is communicated with the revolution center; the through hole is used for inserting the screw tap.

Preferably, the number of the positioning claws is determined based on the number of flutes of the tap used in cooperation; wherein the length of the positioning claw is greater than the thread length of the tap; the width of the positioning claw is smaller than the width of the chip removal groove of the screw tap.

Preferably, the positioning pawl comprises:

the positioning claw boss is arranged in the middle of the positioning claw;

the front end of the positioning claw is in clearance fit with the screw tap; when tapping is carried out, the front end of the positioning claw extends into the tapping hole, and the boss of the positioning claw is attached to the surface of the tapping hole.

Preferably, the detent projections comprise conical or planar surfaces.

The application has the following technical effects:

the application provides a universal hole tapping clamping corrector, and provides a clamping corrector which assists in manual tapping and ensures tapping quality; the clamp holder can ensure the verticality in the tapping process and the stability of the tapping process under the manual force application, and improve the tapping quality to meet various tapping processing requirements and thread use requirements.

Drawings

Fig. 1 is a schematic structural diagram of a universal hole tapping clamp corrector provided in an embodiment of the present application;

FIG. 2 is a schematic diagram of another universal hole tapping clamp aligner provided in an embodiment of the present application;

FIG. 3 is a schematic diagram of an internal structure of a universal hole tapping clamp corrector according to an embodiment of the present application;

FIG. 4 is a schematic diagram of another embodiment of a universal hole tapping clamp orthotic;

wherein: 1-a positioning claw; 101-front end of positioning claw; 102-positioning pawl boss; 2-positioning sleeve.

Detailed Description

The present application will be described in further detail with reference to the accompanying figures 1-4 and the detailed description of the preferred embodiments:

the application provides a universal hole tapping clamping corrector, which comprises a positioning claw 1 and a positioning sleeve 2 which are fixedly connected into a whole; the positioning sleeve and the positioning claws are on the same central line, and the positioning sleeve is uniformly distributed with a plurality of positioning claws along the circumferential direction.

The screw tap clamping corrector is characterized in that a through hole is formed in the rotation center of the screw tap clamping corrector, the nominal size of the diameter of the through hole is the same as the nominal size of the diameter of a screw tap handle used in a matched mode, and the screw tap clamping corrector and the screw tap handle are in clearance fit. The whole appearance of the positioning sleeve of the screw tap clamping corrector is a cylindrical surface, and the length of the positioning sleeve is less than or equal to half of the length of a screw tap handle.

Furthermore, the number of the positioning claws is determined according to the number of the matched tap chip removal grooves, the total length of the positioning claws is 1-2mm larger than the total length of the threads of the matched tap, and the width of a single positioning claw is 0.5mm smaller than the width of the matched tap chip removal groove.

The positioning claw boss 102 can be a conical surface or a plane; the front end 101 of the positioning claw is integrally cylindrical, the nominal size of the positioning claw is consistent with that of a bottom hole to be tapped, the positioning claw and the bottom hole are in clearance fit, and the length of the positioning claw is 5-10 mm.

In the embodiment of the application, the tap matched with the tapping clamping corrector is a standard tap, the tap is a straight-groove tap, an edge rake type tap, a spiral tip tap and a special tap for a wire thread sleeve, the specification of a common tap matched with the tapping clamping corrector is M12-M30, and the specification of the wire thread sleeve tap is ST8-ST 30.

In other embodiments of the present application, the hole tapping clamp aligner is comprised of two parts, a locating sleeve and a locating pawl. The positioning sleeve and the positioning claw are on the same central line, the diameter of an inner hole of the positioning sleeve is the same as the diameter of a handle of the screw tap, the screw tap is concentrically arranged in the positioning sleeve in a clearance fit mode, a plurality of positioning claws are uniformly distributed in the positioning sleeve along the circumferential direction, the tapping end and the positioning claw end of the screw tap are arranged in the same direction, and the screw tap can realize axial feed motion relative to the tapping clamping corrector; the verticality of the tapping clamping corrector is determined by the positioning surface of the positioning claw boss when the tapping clamping corrector is combined with a machining surface during working.

Specifically, the structure is installed before tapping, the thread end of the screw tap and the positioning claw end of the holder are inserted into the screw tap clamping corrector in the same direction, the screw tap clamping corrector is the clamping correction device, when the square part of the screw tap passes through the central through hole of the positioning sleeve, the positioning claw and the chip removal groove of the screw tap need to be aligned with each other, then the screw tap is continuously pushed to enable the thread end of the screw tap to be aligned with the front end of the positioning claw, at the moment, the length of the positioning claw is larger than the total length of the screw tap thread by 1-2mm, and the length of the positioning sleeve is not larger than half of the length of the screw tap handle, so that the sufficient tapping screwing space is ensured, and the tapping process requirement is met.

After the screw tap and the holder are installed, the screw tap and the holder are screwed into a machined hole together, the screw tap generates backward relative movement in the holder due to partial resistance, the front end of the positioning claw of the clamping corrector can completely enter the machined hole, the positioning claw and the positioning claw are in clearance fit, a boss positioning surface in the middle of the positioning claw is tightly attached to the surface of the machined hole, the cutting cone of the screw tap has a function when the screw tap and the holder generate a mutual feeding action, and the clamping corrector is matched with the machined hole completely.

Wherein, above-mentioned structure is adding man-hour, installs the tap spanner in the screw tap four sides, twists the screw tap, and the screw tap is rotatory with the centre gripping unscrambler with the speed, and the screw tap produces feed motion for the centre gripping unscrambler this moment, and under the positioning action of centre gripping unscrambler, tapping processing does not produce the skew, has overcome the uneven manual tapping slope declination that brings of hand effort, has improved tapping precision and efficiency.

After the structure is machined, if the through hole can directly screw out the screw tap, the blind hole needs to reversely screw out the screw tap, the clamp holder is pulled out of a machined hole when the screw tap is screwed in and is not stressed, chips are cleaned, and machining is finished.

This application is through locating pawl front end hand-hole and locating pawl middle part boss confirm the straightness that hangs down of screw tap and the restriction removes the ascending degree of freedom in all directions beyond the tapping direction, guarantees always that locating pawl boss and tapping hole surface laminating under the manual application of force make the screw thread that processes can not beat because of the secondary application of force production, realize the complete restriction to manual unstable factor when guaranteeing the tapping continuity to improve the tapping precision.

This application is central symmetric distribution through the locating pawl and avoids the screw tap to feed uneven influence, and remains the chip groove function on the basis of cooperation chip groove, and standard screw tap uses operating mode to a certain extent improves the tapping condition, is favorable to the tapping operation, avoids producing adverse effect.

This application is through adopting clearance fit mode between standard screw tap and screw tap centre gripping unscrambler, and screw tap centre gripping unscrambler is rotatory with the degree of freedom with the screw tap in tapping course of working, has guaranteed that the screw tap only produces relative feed motion with the centre gripping unscrambler in the course of working, guarantees that the tapping position is accurate, satisfies the convenient dismantlement of precision simultaneously.

The screw tap machining fixture is suitable for internal thread machining of holes, screw taps of different models can be correspondingly matched with screw tap clamping correctors of different models and then are matched with the holes in a unified mode, different angles of bosses of the positioning claws can be applied to machining of conical surface bottom holes and plane hole tapping, the screw tap machining fixture is applicable to M12-M30 common screw taps, ST8-ST30 steel wire thread bushing screw taps, and products can be standardized in a seriation mode.

This application is installed in the design, and the screw thread end and the holder locating pawl homonymy of screw tap are installed, and it is stable to use hole axle cooperation and terminal surface cooperation to guarantee the effort, uses the convenient change of screw tap standard component and maintains, and the manufacturing of being convenient for of design simple structure.

In addition, the design and manufacture aspects are as follows: the general hole tapping straightener manufacturing material test product is made of No. 45 steel, and can be made of tool steel if machining needs and better mechanical properties are needed. The manufacturing of the factory is convenient, local materials are used, and the manufacturing can be carried out according to the prior sample and drawing.

The perpendicularity problem of the machining hole diameter is considered, the positioning boss and the front end positioning claw are designed in the application, working conditions such as machining of a taper hole are considered, the positioning boss is designed with a fixed angle, the positioning sleeve is designed in cooperation with the screw tap, the screw tap can be better assisted to play a role, and practical application verifies that the use requirement is completely met.

Use evaluation aspect: the method is widely applied to actual tapping, and the processing requirement of the tapped hole is enough in precision to meet the precision range of manual tapping, and is well evaluated in the use of a plurality of engineers.

Claims (6)

1. A universal hole tapping clamp orthotic, comprising:

the positioning claw is used for determining the perpendicularity of the screw tap and limiting the degree of freedom of the screw tap;

the positioning sleeve is connected with the positioning claw; the axis of the positioning sleeve and the axis of the positioning claw are on the same central line.

2. The universal hole tapping clamp corrector of claim 1, wherein said locating detents are disposed on said locating sleeve on a predetermined interval basis; and a rotation center is formed between the positioning claws and is used for arranging the screw tap.

3. The universal hole tapping clamp orthosis of claim 2, wherein the alignment sleeve defines a through hole; wherein the through hole is communicated with the revolution center; the through hole is used for inserting the screw tap.

4. The universal hole tapping clamp corrector according to claim 3, wherein the number of said detents is determined based on the number of flutes of said tap engaged therewith; wherein the length of the positioning claw is greater than the thread length of the tap; the width of the positioning claw is smaller than the width of the chip removal groove of the screw tap.

5. The universal hole tapping clamp orthosis of claim 4, wherein the positioning pawl comprises:

the positioning claw boss is arranged in the middle of the positioning claw;

the front end of the positioning claw is in clearance fit with the screw tap; when tapping is carried out, the front end of the positioning claw extends into the tapping hole, and the boss of the positioning claw is attached to the surface of the tapping hole.

6. The universal hole tapping clamp orthosis of claim 5, wherein the detent projections comprise conical or flat surfaces.

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