CN201086138Y - Cam type fine-tuning boring structure - Google Patents

Abstract

A cam type fine-tuning boring structure is a cam type fine-tuning boring structure with μ-level fineness adjustment, which mainly comprises a boring tool body, a cam adjustment ring and a tool handle, wherein the bottom surface of the cam adjustment ring is provided with a concave cam groove, and the difference between the starting point and the end point of the cam groove is 0.1mm. If the angle range of 341 degrees is divided into 100 grids, it will have an accuracy of 0.001mm per grid. In this way, by adjusting the fine offset between the tool handle axis and the boring tool body, the effect of precise fine-tuning of the boring accuracy can be achieved, thereby overcoming the defect of insufficient precision fine-tuning of the fine-tuning boring head of the traditional structure.

Description

Cam-type fine-tuning boring structure

technical field

The utility model provides a processing equipment tool holder, in particular a cam type fine-tuning boring structure.

Background technique

The creator previously developed a fine-tuning tool holder structure with thread gap compensation, in which the tool holder is mainly composed of a body, an adjustment seat, and an adjustment screw; The slot extending toward the hole is used for a tool to pass through, and the outer edge of the body is pierced with a shaft hole extending radially along the long side of the slot hole, and one end of the shaft hole is embedded with a bushing, and the bushing An adjustment screw is pivoted, and an adjustment seat for tool positioning is slidably provided in the shaft hole. The adjustment screw mainly extends a threaded portion toward one end of the adjustment seat, and the adjustment seat is concavely provided with a conical inlay at one end of the adjustment screw. The opening side of the embedded hole is provided with an internal threaded hole, and a sleeve with an internal screw hole in the center is sleeved in the embedded hole for the threaded part of the adjusting screw to be screwed together, and the sleeve is formed toward the end of the adjustment seat. A tapered part, the tapered part is embedded in the embedding hole of the adjustment seat, the outer edge of the tapered part is provided with several through-cut grooves in the radial direction, and the end of the sleeve different from the tapered part is provided with a convex The flange part forms a screw lock with the internal thread hole of the adjusting seat embedding hole, and the end surface of the sleeve on the side different from the tapered part is concavely provided with several concave holes for the insertion and rotation of tools. The outer edge of the bushing is perforated with several screw holes forming equiangular divisions, and each screw hole is respectively accommodated with a positioning component composed of two fixing screws and a bead. The middle section of the adjusting screw is provided with a positioning part embedded in the groove of the bushing, and the outer edge of the positioning part is provided with a ring groove, so that the beads of the positioning components on the bushing are inserted into the ring groove to form positioning. The other end of the threaded portion forms a dial body.

Although the fine-tuning tool seat structure with thread clearance compensation developed above has a fine-tuning function, it is still not quite precise.

Therefore, although the above-mentioned structure can be fine-tuned, it is not quite precise. How to develop a more sophisticated and practical innovative structure is what consumers are eagerly looking forward to, and it is also the goal and direction that relevant industry players must work hard to develop breakthroughs.

In view of this, the creator has been engaged in the manufacture, development and design of related products for many years. After detailed design and careful evaluation for the above-mentioned goals, he finally obtained a practical utility model.

Contents of the invention

The purpose of the utility model is to provide a cam-type fine-tuning boring structure to overcome the above-mentioned defects of the traditional structure. By adjusting the fine offset between the shaft center of the tool handle and the boring tool body, the precision fine-tuning boring effect can be achieved.

According to above-mentioned object, a kind of cam type fine-tuning boring structure is characterized in that, comprises:

A boring tool body, the boring tool body is provided with flat slots;

A knife handle, the knife handle protrudes downward from the retaining ring and has a ring part and a flat part, and two corresponding flat surfaces of the flat part are horizontally cut and provided with elongated grooves;

A cam adjustment ring, the cam adjustment ring is provided with a through hole for the ring part of the handle to pass through, the flat part of the handle is assembled in the flat slot hole of the boring tool body, and the bottom surface of the cam adjustment ring is provided with a surrounding cam groove, The starting point to the end point of the cam groove surrounds within an angle range of 0-360 degrees, and has a gradual center distance difference. There are dozens of grid scale structures between the starting point and the end point; the top surface of the boring tool body is fixed There is a transfer pin used to guide the offset, and the transfer pin is inserted in the cam groove;

a fine-tuning fixing part, the fine-tuning fixing part is horizontally locked in the screw hole of the boring tool body, and is respectively perpendicular to the two flat surfaces of the handle, and the fine-tuning fixing part is arranged against the elongated groove of the handle; and,

One is used to eliminate the gap between the transmission pin and the cam groove of the cam adjustment ring, and the gap elimination part between the ring part of the handle and the through hole of the cam adjustment ring. It is assembled in the screw hole of the boring tool body and pressed against the flat The direction of the long side of the section.

Wherein, the difference between the starting point and the ending point of the cam groove and the center of the circle is 0.1 mm, the angle of rotation is 341 degrees, and it has a scale structure of 100 grids.

Wherein, the boring tool body has a fine-tuning knife seat structure that can directly adjust the eccentricity of the knife seat piece by adjusting the screw.

Wherein, the fine-tuning fixture includes two screws, two springs and two wedges, each screw is provided with a recess to accommodate a spring and a guide post with a wedge, and the wedge is set against the elongated groove of the handle .

Wherein, the gap eliminating member includes a gap eliminating screw and a spring.

Compared with the effect of the previous technology: although the previous technology has a design for fine-tuning the eccentricity of the tool holder, it is still slightly insufficient in fine-tuning precision, and the utility model can not only maintain the design of the fine-tuning tool eccentricity of the tool holder, but also set a The cam adjustment ring is used to adjust the eccentricity between the handle and the body of the boring tool, so that it can achieve μ-level fine adjustment and improve the adjustment accuracy.

About technology, means and effect thereof that the present utility model adopts, hereby give a preferred embodiment and coordinate drawing in detail in the back, believe that the above-mentioned purpose of the present utility model, structure and feature, when can get a deep and specific from it understanding.

Description of drawings

Fig. 1: is the three-dimensional exploded schematic view of one embodiment of the utility model.

Fig. 2: is the three-dimensional schematic diagram of one embodiment of the utility model.

Fig. 3: is the bottom plan view of the cam adjustment ring of the present invention.

Fig. 4: is the combined front sectional view of the present utility model.

Fig. 5: is the combined side sectional view of the utility model.

FIG. 5A : is a locking operation diagram of the fine-tuning fixing part in FIG. 5 .

Detailed ways

Referring to Figures 1 to 3, the utility model provides a cam-type fine-tuning boring structure, including:

A boring knife body 10, the boring knife body 10 can still retain the fine-tuning knife seat structure 11, so that the eccentricity of the knife seat 13 can be adjusted by adjusting the screw 12, and the top surface of the boring knife body 10 is provided with a flat slot 17;

A knife handle 20, the knife handle 20 protrudes downward from the retaining ring 21, and is provided with a ring portion 22 and a flat portion 23, and the two corresponding flat surfaces 231, 232 of the flat portion 23 are horizontally cut with an isosceles long groove 2311 , 2321, both the ring part 22 and the flat part 23 are precision machined;

A cam adjustment ring 30, the cam adjustment ring 30 is provided with a through hole 31 for the ring part 22 of the handle 20 to pass through, the flat part 23 of the handle 20 is inserted into the flat slot 17 of the boring tool body 10, and the cam adjustment ring 30 bottom surface is provided with the cam groove 32 (shown in Fig. 3, Fig. 5) that surrounds setting, and cam groove 32 starting point 321 to end point 322 difference value is L, and the value of L can be 0.1mm, and its one example if will Set the angle range at the θ angle, the θ angle is 341 degrees, divided into 100 grids, the precision of each grid will reach the precision of 0.001mm, and the precision adjustment of μ level is achieved; the top surface of the boring tool body 10 is fixed with a transmission pin 14, Move the pin 14 and insert it into the cam groove 32 of the cam adjustment ring 30 to guide the offset;

A fine-tuning fixture 40, the fine-tuning fixture includes two screws 41, two springs 42 and two wedges 43, each screw 41 is provided with an alcove 411 to accommodate a spring 42 and an isosceles wedge 43 The guide column 431 and the fine-tuning fixing part 40 are horizontally locked on the screw hole 15 of the boring tool body 10, and are respectively perpendicular to the two flat surfaces 231 and 232 of the handle 20, and the wedge 43 is arranged on the isosceles long groove of the handle 20. slots 2311, 2321; and,

A gap eliminating part 50, the gap eliminating part 50 is locked in the screw hole 16 of the boring tool body 10, the gap eliminating part 50 includes a gap eliminating screw 51 and a spring 52, which can resist the long side direction of the flat part 23 of the handle 20, according to To eliminate the gap B between the transfer pin 14 and the cam groove 32 of the cam adjustment ring 30, and the gap A between the annular portion 22 of the handle 20 and the through hole 31 of the cam adjustment ring 30.

Referring to Fig. 4, Fig. 5 and Fig. 5A, the gap eliminating member 50 is locked to eliminate the gap B between the transfer pin 14 and the cam groove 32 of the cam adjustment ring 30, and the circular portion 22 of the handle 20 and the cam adjustment ring 30 Clearance A of the through hole 31. When you want to finely adjust the offset of the cam-type fine-tuning boring structure, loosen the fine-tuning fixing part 40 first, so that the wedge 43 of the fine-tuning fixing part 40 has an isosceles elongated groove close to it. 2311, 2321, but not dead, so when the adjustment cam adjustment ring 30 reaches the desired offset, then lock the fine-tuning fixing part 40 to achieve the offset effect.

Referring to FIG. 5A , the locking and fine-tuning fixture 40 has to eliminate the gap and lock between the knife handle 20 and the boring tool body 10 . When the knife handle 20 is not moving, the boring tool body 10 is pulled up to eliminate the gap.

The utility model effect enhancement part is as follows:

1. From the above, it can be seen that the utility model achieves μ-level displacement accuracy by means of cam displacement and rotation, and improves the adjustment to a precision level.

2. The utility model retains the fine-tuning tool holder structure as the preliminary fine-tuning control, and then can achieve μ-level precision through precision cam-type fine-tuning, so that it has both fast and precise double-adjustment benefits.

The foregoing is a specific description of the technical features of the utility model for the preferred embodiment of the utility model; however, those who are familiar with this technology can change and modify the utility model without departing from the spirit and principles of the utility model , and these changes and modifications should all be covered in the scope defined by the patent scope of this application.

Claims (5)

1. A cam type fine-tuning boring structure, is characterized in that, comprises: A boring tool body, the boring tool body is provided with flat slots; A knife handle, the knife handle protrudes downward from the retaining ring and has a ring part and a flat part, and two corresponding flat surfaces of the flat part are horizontally cut and provided with elongated grooves; A cam adjustment ring, the cam adjustment ring is provided with a through hole for the ring part of the handle to pass through, the flat part of the handle is assembled in the flat slot hole of the boring tool body, and the bottom surface of the cam adjustment ring is provided with a surrounding cam groove, The starting point to the end point of the cam groove surrounds within an angle range of 0-360 degrees, and has a gradual center distance difference. There are dozens of grid scale structures between the starting point and the end point; the top surface of the boring tool body is fixed There is a transfer pin used to guide the offset, and the transfer pin is inserted in the cam groove; a fine-tuning fixing part, the fine-tuning fixing part is horizontally locked in the screw hole of the boring tool body, and is respectively perpendicular to the two flat surfaces of the handle, and the fine-tuning fixing part is arranged against the elongated groove of the handle; and, One is used to eliminate the gap between the transmission pin and the cam groove of the cam adjustment ring, and the gap elimination part between the ring part of the handle and the through hole of the cam adjustment ring. It is assembled in the screw hole of the boring tool body and pressed against the flat The direction of the long side of the section. 2. The cam-type fine-tuning boring structure as claimed in claim 1, characterized in that the difference between the starting point and the end point of the cam groove and the center of the circle is 0.1 mm, the angle of rotation is 341 degrees, and it has a scale structure of 100 grids . 3 . The cam-type fine-tuning boring structure according to claim 1 , wherein the boring tool body has a fine-tuning tool seat structure that can directly adjust the eccentricity of the tool seat piece by adjusting screws. 4 . 4. The cam-type fine-tuning boring structure as claimed in claim 1, wherein the fine-tuning fixture includes two screws, two springs and two wedges, and each screw is provided with a recess to accommodate a spring and a There is a guide column with a wedge, and the wedge is set against the elongated groove of the tool handle. 5 . The cam-type fine-tuning boring structure as claimed in claim 1 , wherein the gap eliminating member comprises a gap eliminating screw and a spring. 6 .

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