CN217343613U - Fine adjustment boring cutter - Google Patents

Abstract

The utility model discloses a fine adjustment boring cutter, which comprises a cutter bar, a fine adjustment external member, a fine adjustment nut, a cutter head and a first bolt; the cutter bar comprises a first end and a second end which are coaxial and integrated cylinders; the first end is fixedly connected with the boring bar; the fine tuning sleeve is cylindrical and comprises a third end and a fourth end; the third end comprises an axial first hole which is matched with the second end in a mounting way; the second end is slidably mounted in the first bore; the outer side surface of the third end is provided with an external thread; the fine adjustment nut comprises an internal thread which is connected and matched with the external thread and is in threaded connection with the fine adjustment sleeve; the fine adjustment nut can rotate relative to the second end and has no axial displacement relative to the second end; the cutter head is fixedly connected with the fourth end; a first screw hole which is matched with the first bolt in a radial mode is formed in the side face of the third end and is located on the inner side of the fine adjustment nut; the first bolt is connected with the first screw hole and used for fixing the fine adjustment sleeve and the second end. The utility model discloses realize the ration fine setting, improve adjustment efficiency, production efficiency, bore hole quality and yield.

Description

Fine adjustment boring cutter

Technical Field

The utility model belongs to the technical field of machining equipment, specifically speaking relates to a fine setting boring cutter.

Background

When a hole with higher requirement on the precision of the diameter dimension is finely bored by using a common boring machine, the cutter bar welded with the self-grinding fine boring cutter is placed in the cutter bar mounting hole of the boring bar, the extension length of the cutter bar is adjusted, and then the cutter bar and the boring bar are tightly pressed by using a pressing bolt. And starting a boring machine to enable the main shaft to rotate to finely bore the inner hole, and adjusting the extension length of the cutter bar according to the measurement of the hole diameter after the fine boring is finished.

The existing method for adjusting the extension length of the boring tool comprises the steps of slightly loosening a compression bolt, knocking a tool bar by a small hammer, and controlling the movement amount of the tool bar by experience feeling to achieve the purpose of fine adjustment. The method needs to be implemented by an experienced teacher to ensure the precision of the boring; once the experience is slightly insufficient, the problems of low adjustment efficiency, unstable product quality or high defective rate are easily caused.

In addition, because the cutting edge of the cutter is sharp, the surface of a workpiece is easily damaged by knocking the cutter rod by a small hammer, so that the processing quality is further influenced and the defective rate is increased.

Disclosure of Invention

The utility model provides a fine setting boring cutter can quantitatively finely tune, guarantees the adjustment range, improves adjustment efficiency, production efficiency, bore hole quality and yield.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes:

a fine adjustment boring cutter comprises a cutter bar, a fine adjustment sleeve, a fine adjustment nut, a cutter head and a first bolt;

the cutter bar comprises a first end and a second end; the first end and the second end are coaxial and integrated cylinders; the first end is used for being axially and vertically fixedly connected with the boring bar;

the fine tuning kit is cylindrical and comprises a third end and a fourth end; the third end comprises an axial first hole which is matched with the second end in a mounting way; said second end slidably mounted in said first bore; an external thread is arranged on the outer side surface of the third end;

the fine adjustment nut comprises an internal thread which is connected and matched with the external thread and is in threaded connection with the fine adjustment sleeve; the fine adjustment nut can rotate relative to the second end, and the axial position of the fine adjustment nut relative to the second end is unchanged;

the cutter head is positioned at the fourth end and is fixedly connected with the fourth end;

a first screw hole which is matched with the first bolt in a radial mode is formed in the side face of the third end and is located on the outer side of the fine adjustment nut; the first bolt is in threaded connection with the first screw hole and used for screwing the first bolt to fix the fine adjustment sleeve and the second end when the fine adjustment sleeve is adjusted.

In one embodiment, the side surface of the second end is provided with an axial groove which comprises a groove wall and a groove bottom; the groove bottom corresponds to the first screw hole; the tail end of the first bolt is in compression connection with the groove bottom when being screwed down.

In one embodiment, the groove communicates with the end of the second end.

In some embodiments, a second bolt is further included; the fourth end is provided with a second hole matched with the cutter head in an installation manner; the tool bit part is arranged in the second hole;

a second screw hole which is radial and is connected and matched with the second bolt is formed in the side surface of the fourth end; the second bolt with the second screw is connected, just the end of second bolt with the tool bit compresses tightly and is connected.

In some embodiments, the device further comprises a third bolt, and a spiral spring sleeved and matched with the third bolt;

the first bore is in coaxial communication with the second bore through a third bore; the shank of the third bolt may pass through the third bore; the diameter of the coil spring is larger than that of the third hole;

the tail end of the second end is provided with an axial third screw hole matched with the third bolt in a connecting way; a boss with the diameter not smaller than that of the internal thread is arranged between the first end and the second end and is coaxially integrated with the first end and the second end; the screw rod passes in proper order coil spring third hole with third screw threaded connection.

In some embodiments, the diameter of the first end is less than the diameter of the boss.

In some embodiments, the first end has a cross-section that is a partial circular surface that is larger than a semicircle.

In some embodiments, the non-circular arc side of the cross-section of the first end is a straight line, which is smaller than the diameter of the first end.

In some embodiments, anti-slip threads are uniformly disposed on the outer side surface of the fine adjustment nut.

Compared with the prior art, the utility model discloses an advantage is with positive effect: the utility model discloses a fine setting boring cutter is through the threaded connection of fine setting external member and fine setting nut, makes rotating fine setting nut can adjust the relative cutter arbor of fine setting external member that carries the tool bit and carry out axial position's regulation, realizes the accurate and high-efficient regulation of tool bit diameter, improves regulation efficiency, machining precision and yields. The second end is installed at first downthehole, guides the axial removal of fine setting external member, guarantees the axiality of fine setting external member and the tool bit that is located the fine setting external member, guarantees the precision of bore hole operation.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of an embodiment of a fine-tuning boring tool according to the present invention in an operating state;

FIG. 2 is a schematic view, partially in section, of an embodiment of a fine adjustment boring tool according to the present invention;

FIG. 3 is a schematic cross-sectional view of a fine tuning assembly;

FIG. 4 is a schematic view of a fine adjustment nut;

FIG. 5 is a schematic view of a fine adjustment nut;

FIG. 6 is a partial cross-sectional structural view of the tool holder;

FIG. 7 is a schematic view of the structure of FIG. 4;

fig. 8 is a schematic view of the cutter bar portion structure B in fig. 4.

In the figure, the position of the first and second end faces,

01. boring a rod; 1. a cutter bar; 2. a fine tuning kit; 3. a cutter head; 4. fine adjustment of the nut; 5. a first bolt; 6. a second bolt; 7. a third bolt; 8. a coil spring; 11. a first end; 12. a second end; 13. a boss; 21. a third end; 22. a fourth end; 23. a third aperture; 41. anti-skid lines; 42. an internal thread; 111. a cross-section; 121. a third screw hole; 122. a groove; 1221. the bottom of the tank; 1222. a trench wall; 211. a first hole; 212. an external thread; 213. a first screw hole; 221. a second hole; 222. and a second screw hole.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1, 2, 3, 4, 5 and 6, a fine adjustment boring tool of the present invention is installed on a boring bar 01; the boring bar 01 is arranged on a boring machine; a rotating shaft of the boring machine drives the boring rod 01 to rotate; the boring bar 01 drives the boring cutter to rotate, and boring operation is achieved.

The fine adjustment boring cutter comprises a cutter bar 1, a fine adjustment sleeve 2, a cutter head 3, a fine adjustment nut 4 and a first bolt 5.

The tool bar 1 comprises a first end 11 and a second end 12 which are coaxial and integrated cylinders. A radial through hole matched with the first end 11 is formed in the boring bar 01; the first end 11 is arranged in the through hole and is used for axially and vertically fixedly connecting the cutter bar 1 with one end of the boring bar 01.

The fine tuning kit 2 is cylindrical and comprises a third end 21 and a fourth end 22; the third end 21 includes an axial first bore 211 which is fittingly engaged with the second end 12; the second end 12 is slidably mounted in the first hole 211 in the axial direction of the first hole 211; the outer side of the third end 21 is provided with an external thread 212.

The fine adjustment nut 4 comprises an internal thread 42 matched with the external thread 212 in a connecting way and is in threaded connection with the fine adjustment sleeve 2; the trim nut 4 is rotatable relative to the second end 12 and has an axial position relative to the second end 12 that is unchanged.

The cutter head 3 is positioned at the fourth end 22 and is fixedly connected with the fourth end 22. A first screw hole 213 which is radially matched with the first bolt 5 in an installing way is arranged on the side surface of the third end 21 and is positioned on the outer side of the fine adjustment nut 4; the first bolt 5 is threadedly coupled to the first screw hole 213, and is used for tightening the first bolt 5 to tightly couple with the second end 12 when the fine adjustment sleeve 2 is adjusted, so as to fix the fine adjustment sleeve 2 and the second end 12.

The utility model discloses a fine setting boring cutter is through fine setting external member 2 and the threaded connection of fine setting nut 4, can adjust the relative cutter arbor 1 of fine setting external member 2 that carries tool bit 3 when making rotating fine setting nut 4 and carry out axial position's regulation, realizes the accurate and high-efficient regulation of 3 diameters of tool bit, improves regulation efficiency, machining precision and stability in quality. The second end 12 is installed in the first hole 211, guides the axial movement of the fine adjustment sleeve 2, ensures the coaxiality of the fine adjustment sleeve 2 and different adjustment positions of the tool bit 3 on the fine adjustment sleeve 2, and ensures the precision and quality stability of boring operation.

In an embodiment, referring to fig. 2, 3, 4, 5 and 6, the fine tuning boring tool further includes a third bolt 7 and a coil spring 8 fitted around the third bolt 7.

The fourth end 22 is provided with a second hole 221 matched with the tool bit 3 in mounting; the cutting head 3 is partly fixedly mounted in the second hole 221.

A third hole 23 is provided between the first hole 211 and the second hole 221; the first hole 211 and the second hole 221 coaxially communicate through the third hole 23; the screw of the third bolt 7 can pass through the third hole 23; the diameter of the third bore 23 is smaller than the diameter of the helical spring 8.

The tail end of the second end 12 is provided with an axial third screw hole 121 which is matched with the third bolt 7 in a connecting way; a boss 13 with the diameter not smaller than that of the internal thread 42 is arranged between the first end 11 and the second end 12 and is coaxially integrated with the first end 11 and the second end 12; the screw of the third bolt 7 passes through the spiral spring 8 and the third hole 23 in sequence and is in threaded connection with the third screw hole 121.

The fine setting external member 2 of this embodiment uses through the cooperation of third bolt 7 with coil spring 8 to make fine setting external member 2 and fine setting nut 4 be connected with boss 13 together, guarantees that fine setting nut 4 does not have axial displacement for second end 12, and its rotation makes the displacement that fine setting external member 2 formed all turn into the regulation of the operation diameter of tool bit 3, improves the stability that the operation diameter of tool bit 3 was adjusted.

In one embodiment, a boss 13 having a diameter not smaller than the diameter of the internal thread 42 is provided between the first end 11 and the second end 12, and is coaxially integrated with the first end 11 and the second end 12. The fine adjustment boring tool further comprises a connecting member which is respectively connected with the fine adjustment nut 4, the boss 13 or the second end 12, so that the fine adjustment nut 4 can rotate around the axis without axial displacement relative to the second end 12.

The connecting piece can be a bearing or a limiting piece which is fixedly connected with the boss 13 and is matched with the fine adjustment nut 4 in a relatively rotatable connection way. The limiting piece can be an annular limiting piece which is sleeved at the second end 12 and fixedly connected with the boss 13; one end of the fine adjustment nut 4 close to the limiting part is provided with a structure which can be installed with the limiting part in a sliding and rotating mode, so that the fine adjustment nut 4 rotates and does not have axial displacement relative to the second end 12.

In some embodiments, referring to fig. 2 and 3, the fine turning boring tool further comprises a second bolt 6. A second screw hole 222 which is radial and is matched with the second bolt 6 in a connecting way is arranged on the side surface of the fourth end 22; the second bolt 6 is connected with the second screw hole 222, and the end of the second bolt 6 is connected with the cutter head 3 in a pressing manner.

The fine setting boring cutter of this embodiment passes through 6 fixed tool bits 3 of second bolt, makes tool bit 3 more firm, improves the stability of bore hole operation.

In some embodiments, referring to fig. 2, 3, 6, 7 and 8, the second end 12 is provided with an axial groove 122 on a side thereof, which includes a groove bottom 1221, a groove wall 1222; the groove bottom 1221 corresponds to the first screw hole 213 in the forward direction; the end of the first screw 5 is pressed into engagement with the groove base 1221 during the tightening.

The fine tuning boring tool of the present embodiment increases the contact area when the first bolt 5 is connected to the second end 12 through the groove 122, so as to improve the stability and stability of the connection between the fine tuning sleeve 2 and the second end 12.

In some embodiments, referring to fig. 2, 3, 6, 7, and 8, the groove 122 communicates with the end of the second end 12.

The fine setting boring cutter of this embodiment makes first bolt 5 need not be complete or increase laxity degree just can dismantle second end 12 and fine setting external member 2 and break away from through the recess 122 with the terminal intercommunication of second end 12, improves and dismantles efficiency, and then improves maintenance and change efficiency.

In some embodiments, referring to fig. 2 and 6, the diameter of the first end 11 is smaller than the diameter of the boss 13.

The fine adjustment boring cutter of the embodiment is convenient to install by setting the diameter of the boss 13 to be larger than that of the first end 11 so that the first end 11 is limited when being installed in the boring bar 01.

In some embodiments, referring to fig. 6 and 7, the cross-section 111 of the first end 11 is a partial circular surface that is larger than a semicircle.

The fine adjustment boring cutter of the embodiment enables the first end 11 to be stably installed in the boring bar 01 through the structure of the first end 11, and therefore installation efficiency and stability are improved.

Preferably, the non-circular arc-shaped side of the cross-section 111 of the first end 11 is a straight line, which is smaller than the diameter of the first end 11.

In some embodiments, referring to fig. 2 and 4, anti-slip threads 41 are uniformly disposed on the outer side surface of the fine adjustment nut 4.

The fine setting boring cutter of this embodiment is through setting up anti-skidding line 41 in the lateral surface of fine setting nut 4, conveniently adjusts the operation diameter of boring cutter, promotes user experience.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (9)

1. A fine adjustment boring tool, comprising:

a cutter bar, which comprises a first end and a second end; the first end and the second end are coaxial and integrated cylinders; the first end is used for being axially and vertically fixedly connected with the boring bar;

the fine tuning kit is cylindrical and comprises a third end and a fourth end; the third end comprises an axial first hole which is matched with the second end in a mounting way; said second end slidably mounted in said first bore; an external thread is arranged on the outer side face of the third end;

the fine adjustment nut comprises an internal thread which is connected and matched with the external thread and is in threaded connection with the fine adjustment sleeve; the fine adjustment nut can rotate relative to the second end, and the axial position of the fine adjustment nut relative to the second end is unchanged;

the cutter head is positioned at the fourth end and is fixedly connected with the fourth end;

the side surface of the third end is provided with a first screw hole which is matched with the first bolt in a radial mode and is positioned on the outer side of the fine adjustment nut; the first bolt is in threaded connection with the first screw hole and used for screwing the first bolt to fix the fine adjustment sleeve and the second end when the fine adjustment sleeve is adjusted.

2. The fine turning boring tool according to claim 1, wherein the second end is provided with axial grooves on its sides, including groove walls, groove bottoms; the groove bottom corresponds to the first screw hole; the tail end of the first bolt is in compression connection with the groove bottom when being screwed down.

3. The fine tuning boring tool of claim 2 wherein the groove communicates with a distal end of the second end.

4. The fine tuning boring tool of any one of claims 1 to 3, further comprising a second bolt; the fourth end is provided with a second hole matched with the cutter head in an installation manner; the tool bit part is arranged in the second hole;

a second screw hole which is radial and is connected and matched with the second bolt is formed in the side surface of the fourth end; the second bolt with the second screw is connected, just the end of second bolt with the tool bit compresses tightly and is connected.

5. The fine tuning boring tool of claim 4, further comprising a third bolt, a coil spring fitted over the third bolt;

the first bore is in coaxial communication with the second bore through a third bore; the screw of the third bolt may pass through the third hole; the diameter of the coil spring is larger than that of the third hole;

the tail end of the second end is provided with an axial third screw hole matched with the third bolt in a connecting way; a boss with the diameter not smaller than that of the internal thread is arranged between the first end and the second end and is coaxially integrated with the first end and the second end; the screw rod sequentially penetrates through the spiral spring, the third hole and the third screw hole in threaded connection.

6. The fine tuning boring tool of claim 5, wherein the first end has a diameter that is less than a diameter of the boss.

7. The fine tuning boring tool of claim 6 wherein the first end has a cross-section that is a partial circular surface that is larger than a semicircle.

8. The fine tuning boring tool of claim 7 wherein the non-circular arc side of the cross-section of the first end is a straight line that is smaller than the diameter of the first end.

9. The fine tuning boring tool according to any one of claims 1 to 3, wherein anti-slip threads are uniformly arranged on the outer side surface of the fine tuning nut.

Images