JPH1071510A - Tool block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately and efficiently machine a product of a desired shape by providing engagement holes for a plurality of parallel tool shanks on the same water surface in a tool block body and adding shank fastening means in the engagement holes. SOLUTION: Tool shanks for tools of prescribed edge shape suited to respective machining processes are fitted in respective engagement holes 2 of a tool block body, which has a plurality of parallel shank engagement holes on the same horizontal face, and fixed by shank fastening means 3. After a central center drill is longitudinally fed to bore a center hole in a work, a bite holder is laterally fed and set the center of a prepared hole drill 6 to the center hole, then the bite holder is vertically fed and bore a prepared hole diameter for a female screw in the work, and the inside the prepared hole diameter is tapped by a swage by the same means so that a prescribed female screw is formed in the work. This constitution permits the work to be machined continuously just by laterally and vertically feeding the bite holder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool block used for cutting a workpiece by attaching to a tool post of a lathe.

[0002]

2. Description of the Related Art A plurality of tools are mounted on a tool post of a lathe, and a swivel-type tool post for machining a workpiece by turning the tool post in accordance with a machining process is often used. However, according to the present invention, a tool block body having a plurality of parallel engagement holes on the same horizontal plane is attached to a tool post of a lathe, and different types of tool shanks having a cutting edge adapted to a machining process in the engagement holes. The part can be inserted and fixed, and the tool post can be fed horizontally or vertically without turning the tool post to process the work with each tool, reducing man-hours. To provide a practical and convenient tool block provided with jetting means for air blow that sprays cutting oil or cooling oil toward the cutting blade part of the attached tool, or blows off chips from the cutting blade part. A.

[0003]

The gist of the present invention will be described with reference to the accompanying drawings.

[0004] A tool block body 1 removably fixed to a tool rest a of a lathe A.
The tool block according to the present invention is characterized in that a plurality of tool shank engaging holes 2 parallel on the same horizontal plane are provided, and shank tightening means 3 is provided in the engaging holes 2.

The tool block according to claim 1, wherein the center distance of each of the plurality of engagement holes (2) is set to a multiple of the feed pitch of the tool post lateral feed screw rod (b). is there.

[0006] Further, a jetting means 4 for jetting fluid toward a cutting blade portion of a tool attached to each engagement hole 2 is provided on a surface of the tool block body 1 facing the workpiece w. A tool block according to any one of claim 1 and claim 2.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings, which are examples of embodiments, showing the functions and effects.

The first embodiment of the present invention will be described.

In each of the tool block bodies having a plurality of shank engaging holes 2 parallel on the same horizontal plane,
A tool shank of a tool having a desired cutting edge shape adapted to a processing step is fitted and fixed by shank tightening means 3.

When a female screw is screwed into the tool block, for example, a work w, as shown in FIG. 2, a center drill 5 is inserted into the central engaging hole 2 of the tool block, and a female screw is inserted into the engaging hole 2 on the front side. The pilot hole drill 6 is fitted with the respective shank portions of the taps 7 in the front engagement holes 2 and tightened and fixed by the tightening means 3.
When the center line of the center drill 5 is aligned with the center line of the lathe, the center holes of the pilot hole drill 6 and the tap 7 are aligned with the center drill 5 because the respective engaging holes 2 are provided in parallel on the same horizontal plane.
It is mounted at the same height on the horizontal plane as the center.

As shown in FIG. 2, after the center drill 5 is fed vertically to drill a center hole in the workpiece w, the tool rest a is fed laterally to align the center of the pilot hole 6 with the center tool post. a, the female screw is bored in the work w as shown in FIG. 3 and the female screw is screwed into the work w by tapping the inside of the pilot hole with the tap 7 by the same means. The desired female screw is formed.

As described above, the workpiece w can be continuously processed only by horizontally and vertically feeding the tool rest a, so that a plurality of tools are mounted on the tool rest as in a conventional swivel-type tool rest. There is no need to rotate the tool post in accordance with the progress of the operation, and the number of steps is reduced.

A second embodiment will be described.

Since the center distance of each of the plurality of engagement holes 2 is set to a multiple of the feed pitch of the laterally feeding screw rod of the tool post a, for example, as shown in FIG. After drilling a center hole, the turret a is retracted by longitudinal feed, and then the turret a is traversed to align the center line of the pilot hole drill 6 with the center hole. By displaying the graduated scale, the pilot hole drill 6 can be surely made to coincide with the center line of the main shaft, so that the measurement work is largely omitted and the work efficiency is improved.

A third embodiment will be described.

The ejection means 4 for ejecting fluid toward the cutting blades of the tools attached to the respective engagement holes 2 is provided on the surface of the tool block body 1 facing the workpiece w. When a tool shank is inserted into and fixed to the engagement hole 2 to cut the workpiece w with the tool, the jetting means 4 sprays cutting oil or cooling oil toward the cutting blade of the tool to cool or lubricate the cutting blade. To lengthen the life of the cutting blade and make the finished surface beautiful, or to blow out air to blow off chips and the like from the cutting blade.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a tool block which is detachably fixed to a tool post a of a lathe according to an embodiment of the present invention.
A plurality of tool shank engaging holes 2 are provided in parallel on the same horizontal plane, and shank tightening means 3 is attached to the engaging holes 2.

The center distance of each of the plurality of engaging holes 2 is set to a multiple of the feed pitch of the tool post lateral feed screw rod.

The illustrated tool block has a circular engagement hole 2 which is fitted into the outer cylindrical portion of the tool shank as the engagement hole 2.
The tool was fixed to the tool block by forming a split circular flat portion in the cross section of the outer cylindrical portion of the tool shank and tightening the flat portion with a tightening bolt 3 ′ as shank tightening means 3. Depending on the shape of the tool shank, there are also those having a square shape and other shapes. Also,
Since the shank portion of a tap or reamer has a straight shape or a tapered shape, a socket or a sleeve is used to engage with the tool shank and drill the engaging hole 2 so that the tool is fixed to the tool block. .

Although the shank tightening bolt 3 'is used as the shank tightening means 3 in the drawing, other tightening means, for example, a shank tightening lever which can tighten the shank with one touch may be employed.

FIGS. 4 to 6 show a work in which a cylindrical material is attached to a bush formed by casting or a chuck 18 of a headstock of a lathe, and the material is formed into a hollow cylindrical shape by a drill attached to a tailstock. The figure shows a case where w is cut into a hollow cylindrical shape having a predetermined dimension.

An outer diameter cutting tool 9 is inserted into the center engaging hole 2 of the tool block, and an end face cutting tool is inserted into the front engaging hole 2.
10 is inserted into the front engagement hole 2 with the shank of the cutting tool 11 for inner diameter cutting, and each tool is tightened and fixed to the tool block with the tightening bolt 3 ', and the work w is rotated. 4
The tool post a is automatically or vertically fed vertically and the inner diameter of the work w is cut by the inner diameter cutting tool 11, as shown in FIG.
Next, as shown in FIG. 5, the cutting tool 9 for cutting the outer diameter is longitudinally fed in the same manner as described above to cut the outer diameter of w, and then, as shown in FIG. I do.

Thereafter, the work w is mounted on the chuck 18 with the left and right sides of the work w turned upside down, and the end face of the work w is cut and finished by the end face cutting tool 10.

FIG. 7 shows a cutting method for cutting an elongated work w to a predetermined length L using the tool block. The work w is inserted into the engagement hole 2 at the front of the tool block. The tool shank of the end face cutting tool 14 for cutting the end face of the workpiece w is inserted into the engagement hole 2 on the front side by inserting the beveling tool 13 having the turned upside down edge for chamfering the end face. Then, the sub-block 16 with the cut-off tool 15 attached to the left end of the tool rest a is fastened and fixed with the fastening bolt 17 at the left end of the tool rest a.
The mounting position of the parting tool 15 is set so that the horizontal distance between the right end face of the parting tool 15 and the left end face of the end face cutting tool is a desired cutting length L.

After chamfering and cutting the end face of the work w with the chamfering bit 13, the tool rest a is automatically or manually traversed by contacting the end face cutting bit 14 with the end face of the work w.
The end face of the work w is sequentially cut and the parting tool
14 starts to cut the workpiece w to obtain a washer-shaped product having a desired length with an end surface chamfered, and by repeating this operation, the elongated workpieces are successively cut to a predetermined length to form a washer-shaped product. Produce products.

Further, on the surface of the tool block body 1 facing the work w, there is provided a jetting means 4 for jetting a fluid toward the cutting blade portion of the tool attached to each engagement hole 2.

In the illustrated embodiment, as shown in FIGS. 8 and 9, a drill hole 20 is drilled from the right end face of the tool box body 1 to the left side face so as not to interfere with the engaging hole 2. A drill hole 20 ′ is drilled toward the drill hole 20 from the right side of the front side of the front side to communicate the drill holes 20, 20 ′, and a tap hole 26 is screwed at the base of each drill hole 20, 20 ′, On the opposite surface of the tool w of the tool box body 1, ejection holes 21 and 21 ′ are drilled obliquely above the respective engagement holes 2 as shown in the figure, and communicate with the drill holes 20. In the illustrated embodiment, the ejection hole 21 is drilled at an angle in the horizontal direction when viewed from above, and a fluid such as cutting oil, cooling oil, or compressed air is ejected from the ejection hole 21 through the drill hole 20. When the fluid is ejected toward the cutting blade portion, the fluid is ejected toward the cutting blade portion, and the ejection port 21 'is pierced at right angles to the opposing surface as viewed from above and vertically downward, and attached to each engagement hole 2. The jetting means 4 is provided so as to jet fluid from the middle and right end of the tool shank to the cutting blade. Reference numeral 22 denotes a plug that closes the ejection hole 21, reference numeral 23 denotes a bellows-type hose that communicates with a cooling pump, a lubrication pump, and a compressor source, reference numeral 24 denotes a one-touch type fitting, and reference numeral 26 denotes a cock.

[0028] The nozzle destination flexibly bent hose 27 ₃ via the cock 27 ₁ the tap hole 26 of the drilled hole 20 as shown in FIG.
27 ₂ continuously provided a bellows body 27 can be fixed in position near the cutting edge portion may be provided so as to eject the fluid from the nozzle destination 27 _2.

As described above, according to the first aspect of the present invention, the tool post a
By simply feeding the workpiece horizontally and vertically, tapping work, a hollow cylindrical product, a processed product having a predetermined length, and the like can be continuously obtained on the work w.

At this time, a product having a desired shape can be obtained with high accuracy and efficiency simply by horizontally and vertically feeding the tool post a. Therefore, a turning machine of the conventional square turret type tool post with poor turning accuracy is used. Even so, accuracy can be ensured by mounting the tool block.

According to the second aspect of the present invention, since the center distance of each of the engagement holes 2 of the tool block is set to a multiple of the feed pitch of the horizontal slide screw rod of the carriage, one engagement hole 2 is used as the main shaft. , The other engagement holes 2 can be surely aligned with the center line of the main shaft by the dial collar set on the lateral feed handle, so that the measurement work is largely omitted and the work efficiency is excellent. Tool block.

According to the third aspect of the present invention, when a tool shank is fitted into and fixed to the engaging hole 2 of the tool box body 1 and the work w is cut by the tool, the jetting means 4 applies the cutting force to the cutting edge of the tool. Cooling or lubricating the cutting blade by spraying cutting oil or cooling oil toward it to prolong the life of the cutting blade and make the finished surface beautiful, or blowing air to cut chips on the cutting blade Is a practical and convenient tool block.

Further, since the ejection holes 21 and 21 'of the ejection means 4 are configured as described above, when performing various types of cutting with the tools attached to the tool box, fluid is applied to the cutting blade portion of each tool. The jet holes 21 and 21 'are appropriately selected and used so as to lubricate and cool the cutting portion by jetting with a strong jet pressure, and to remove chips and the like.

[0034]

According to the first aspect of the present invention, the tool block is mounted on a tool post of a lathe, and a tool shank having a desired cutting edge shape is fitted into the engaging hole. After tightening and fixing by shank tightening means, the product with the desired shape can be processed accurately and efficiently only by horizontally and vertically feeding the tool post, and the turning accuracy of the conventional square turret type tool post deteriorates. Even with a lathe, a tool block with excellent practicality that can secure accuracy by mounting the tool block.

According to the second aspect of the present invention, since the center distance of each of the engagement holes of the tool block is set to a multiple of the feed pitch of the horizontal slide screw rod of the carriage, one engagement hole is provided at the center of the main shaft. When aligned with the line, the dial hole set on the traversing handle ensures that the other engagement holes can be aligned with the centerline of the main shaft. It becomes a block.

According to the third aspect of the present invention, the ejection means for ejecting the fluid toward the cutting blade portion of the tool attached to each engagement hole is provided on the opposed surface of the tool block body facing the workpiece. When cutting a work with a tool by inserting and fixing a tool shank into the engagement hole of the tool box body, the cutting blade part is cooled by spraying cutting oil or cooling oil toward the cutting blade part of the tool by jetting means. It is practical to lubricate and extend the service life of the cutting blade part to make the finished surface beautiful, and to blow out air to blow off cutting chips etc. so that cutting resistance is reduced and efficiency is improved. It is a useful tool block.

[Brief description of the drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a schematic plan view illustrating a use state of the present invention, in which a female screw is screwed into a work;
7 shows a state in which a center hole is drilled in a work with a center drill fitted and stopped in a tool block.

FIG. 3 shows a state in which a female screw pilot hole is drilled in a work by a pilot hole which is fitted and fixed to a tool block in a center hole drilled in FIG. 2;

FIG. 4 is another schematic plan view showing a use state of the present invention, and is a plan view when a work is cut into a hollow cylindrical shape having a predetermined dimension, and an inner diameter fitted and fixed to a tool block. This shows a state in which the inside diameter of the work is cut by the cutting tool.

FIG. 5 shows a state in which the outer diameter of the workpiece is cut by an outer diameter cutting tool fitted and fixed to a tool block on the workpiece whose inner diameter has been cut in FIG. 4;

FIG. 6 shows a state in which the end face of the work machined in FIGS. 4 and 5 is cut by an end face cutting tool fitted and fixed to a tool block.

FIG. 7 is another schematic plan view showing a use state of the present invention, and shows a case where an elongated work is cut at a predetermined length.

FIG. 8 is a cross-sectional view of the jetting means 4 of the present invention with a part cut away.

FIG. 9 is a perspective view of the ejection means 4 of the present invention.

FIG. 10 is a front view of a main part of a lathe to which the tool block of the present invention is mounted.

[Explanation of symbols]

 Reference Signs List A lathe a tool post b screw rod w work 1 tool block body 2 engaging hole 3 shank tightening means 4 jetting means

Claims (3)

[Claims] 1. A tool block body removably fixed to a tool post of a lathe, wherein the tool block body has a plurality of engaging holes for tool shank parallel to each other on the same horizontal plane. A tool block characterized in that shank tightening means is attached to the tool block. 2. The tool block according to claim 1, wherein the center distance of each of the plurality of engagement holes is set to a multiple of the feed pitch of the tool post lateral feed screw rod. 3. A tool block body on a surface facing a workpiece,
3. The tool block according to claim 1, further comprising an ejection unit that ejects a fluid toward a cutting blade portion of the tool attached to each of the engagement holes.