CN104625124A - Radial adjustable deep-hole boring cutter for guide blocks - Google Patents

Abstract

The invention relates to the technical field of cutting tools suitable for machining large-diameter deep holes, in particular to a deep-hole boring tool with radially adjustable guide blocks. Including the knife rod, the front end of the knife rod is provided with a guide block radial adjustment mechanism, the front end of the guide block radial adjustment mechanism is installed with a guide block, the guide block is fastened on the guide block seat, the front end of the guide block seat is provided with a knife seat, and the blade is fixed Installed in the tool seat, the radial adjustment mechanism of the guide block includes a base connected with the tool rod, a body is arranged on the base, a linkage disc is installed on the shaft sleeve of the body, and one side of the linkage disc is set as a bevel tooth structure. A small bevel gear is installed in three holes evenly distributed on the circumference of the body with clearance fit. By setting the radially adjustable guide mechanism of the deep hole boring tool, the radial size of the guide block can be adjusted according to the overhang length of the tool tip, so as to meet the guiding requirements of deep hole machining with different apertures. The operation is simple, fast and high precision , While ensuring the surface quality of deep hole machining, the tool cost is reduced.

Description

A Radial Adjustable Deep Hole Boring Tool with Guide Block

Technical field:

The invention relates to the technical field of cutting tools suitable for machining large-diameter deep holes, in particular to a deep-hole boring tool with radially adjustable guide blocks.

Background technique:

In the manufacturing fields of aerospace machinery, petroleum machinery and mining machinery, large-diameter deep holes are often processed. The boring process of this type of hole generally adopts a boring tool structure with a guide block. The guide block is fastened on the circumference of the boring head near the tool tip by welding or machine clamping. It is only suitable for the processing of fixed-size deep holes. When processing deep holes with different diameters, it is necessary to replace the boring heads corresponding to the diameters, the cutting tool technology range is narrow, and the cost is high.

Invention content:

The present invention provides a radially adjustable deep-hole boring tool for the deficiencies in the prior art, which adjusts the radial size of the guide block according to the overhang length of the tool tip, so as to meet the needs of deep hole processing with different apertures. Time-oriented requirements, expanding the technological scope of the cutting tool, effectively reducing the cost of the cutting tool, thereby effectively solving the problems in the prior art.

The solution adopted by the present invention to solve the technical problem is: the radially adjustable deep-hole boring tool with a guide block includes a tool bar, and its feature is that the front end of the tool bar is provided with a radial adjustment mechanism for the guide block, The front end of the guide block radial adjustment mechanism is equipped with a guide block through the guide block seat, and the guide block and the guide block seat are correspondingly set to three, and the guide block is fastened on the guide block seat by the guide block fastening screw, and the front end of the guide block seat is provided with The knife seat, the blade is fixedly installed in the knife seat through the blade pressing screw, the knife seat corresponding to the tail end of the blade is provided with a blade adjustment screw, and the corresponding guide block seat is provided with a guide block seat locking screw on the knife seat; the guide The block radial adjustment mechanism includes a base connected to the cutter bar. The base is provided with a body, and a linkage plate is installed on the shaft sleeve of the body. Small bevel gears, three small bevel gears are installed in three holes evenly distributed on the circumference of the body with clearance fit.

The tool holder, body and base are fastened and connected by screws; the three small bevel gears are mounted on the body by positioning screws to realize the radial position of the small bevel gears relative to the body; the linkage plate and the three The contact of the two guide block seats is set as a flat trapezoidal thread, and the linkage plate meshes with the trapezoidal threads on the three guide block seats through the plane trapezoidal thread, and the small bevel gear is turned by the adjustment wrench to drive the linkage plate to rotate, and then drive the three guide blocks. Synchronous movement along the radial direction of the boring bar.

The base is fixedly connected with the knife bar through the base connecting screw, the base is positioned and connected with respect to the body through the second key, the base is positioned with the taper hole on the end face of the knife bar through the taper shaft, and the knife seat is positioned relative to the knife bar through the first key. Ontology positioning connection.

The guide block seat locking screw is set to three corresponding to the guide block seat, and the guide block seat after the radial position is adjusted is pressed and the matching gap between the guide block seat and the linkage disk plane thread is eliminated to ensure that the guide block Radial dimension.

The three guide blocks lag the tool tip by 2mm, and their installation position angles are 90°, 180° and 270° respectively relative to the tool tip; the width of the guide block is 0.2 times the diameter of the boring head, and the length of the guide block is 26mm ; The radial adjustment range of the guide block is 1.25 to 1.5 times the diameter of the boring head.

Through the above technical scheme, the present invention has the following effects: the radially adjustable deep-hole boring tool with a guide block can be adjusted according to the overhang length of the tool tip by setting a radially adjustable guiding mechanism for the deep-hole boring tool. The radial size of the guide block is to meet the guiding requirements of deep hole machining with different diameters. The operation is simple, fast, and high precision. While ensuring the surface quality of deep hole machining, it expands the technological range of the tool and effectively reduces the cost of the tool. .

Description of drawings:

Fig. 1 is a schematic diagram of the main view principle of the structure of the present invention;

Fig. 2 is a schematic diagram of the top view structure sectional principle of Fig. 1 of the present invention;

Fig. 3 is a schematic diagram of the principle of the left view structure in Fig. 1 of the present invention;

Fig. 4 is a schematic diagram of the principle of the sectional structure at D-D in Fig. 2 of the present invention.

As shown in the figure: 1. Blade; 2. Blade compression screw; 3. Blade adjustment screw; 4. Knife holder; 5. Screw; 6. Guide block seat locking screw; 7. Guide block fastening screw; 8. Guide block seat; 9, guide block; 10, body; 11, small bevel gear; 12, base; 13, cutter bar; 14, base connecting screw; The first key; 18, the second key; 19, the positioning screw.

Detailed ways

Below in conjunction with the best embodiment shown in the accompanying drawings, it will be further described in detail.

As shown in Figures 1 to 4, the radially adjustable deep-hole boring tool with a guide block includes a tool bar 13, and is characterized in that the front end of the tool bar 13 is provided with a guide block radial adjustment mechanism 16, and the guide block The front end of the block radial adjustment mechanism 16 is equipped with a guide block 9 through the guide block seat 8, the guide block 9 and the guide block seat 8 are correspondingly set to three, and the guide block 9 is fastened on the guide block seat 8 by the guide block fastening screw 7 , the front end of the guide block seat 8 is provided with a knife seat 4, the blade 1 is fixedly installed in the knife seat 4 through the blade pressing screw 2, and the knife seat 4 corresponding to the tail end of the blade 1 is provided with a blade adjustment screw 3, and the knife seat 4 corresponds to Guide block seat 8 is provided with guide block seat locking screw 6; Described guide block radial adjustment mechanism 16 comprises the base 12 that links to each other with cutter bar 13, and base 12 is provided with body 10, and the axle sleeve of body 10 is installed with Linkage disc 15, one side of the linkage disc 15 is set as a bevel tooth structure, and three small bevel gears 11 are arranged to mesh with the bevel teeth on the linkage disc. inside a hole.

Further, the said knife seat 4, the body 10 and the base 12 are fastened and connected by the screw 5; the three small bevel gears 11 are installed on the body 10 by the positioning screws 19, so that the diameter of the small bevel gear relative to the body 10 is realized. to the position; the linkage plate 15 and the three guide block seats 8 are in contact with plane trapezoidal threads, and the linkage plate 15 is engaged with the trapezoidal threads on the three guide block seats 8 through the plane trapezoidal threads, and rotated by adjusting the wrench The small bevel gear drives the linkage disc 15 to rotate, and then drives the three guide blocks 9 to move synchronously along the radial direction of the boring bar 13 .

Further, the base 12 is fixedly connected with the knife rod 13 through the base connecting screw 14, the base 12 is positioned and connected with respect to the body 10 through the second key 18, and the base 12 is positioned with the taper hole on the end surface of the knife rod 13 through the taper shaft, so The aforementioned knife seat 4 is positioned and connected relative to the body 10 through the first key 17 .

Further, the guide block seat locking screw 6 is set to three corresponding to the guide block seat 8, and the guide block seat after the radial position is adjusted is pressed and the gap between the guide block seat 8 and the plane thread of the linkage plate 15 is eliminated. Cooperate with the gap to ensure the radial size of the guide block.

Further, the three guide blocks 9 lag the tool tip by 2mm, and their installation position angles are respectively 90°, 180° and 270° relative to the tool tip; the width of the guide block 9 is 0.2 times the diameter of the boring head, and the guide block The length of 9 is 26mm; the radial adjustment range of guide block 9 is 1.25～1.5 times of the diameter of the boring head.

The radially adjustable deep-hole boring tool with a guide block described above, when implemented, first loosen the blade compression screw 2, adjust the radial overhang length of the blade 1 through the blade adjustment screw 3 according to the pre-processed aperture, and tighten the blade Press the screw 2; then loosen the locking screw 6 of the guide block seat, insert the adjustment wrench into the square hole of the small bevel gear 11, rotate the adjustment wrench, drive the small bevel gear 11 to rotate, and then drive the three guide blocks 9 along the cutter bar Radial synchronous extension or retraction, when the radial dimension of the guide block 9 is measured by a micrometer to meet the pre-processing aperture guidance requirements, tighten the guide block seat locking screw 6 to lock the guide block seat 8, remove the adjustment wrench, Deep hole boring can be carried out. After the guide block 9 is worn out, the guide block 9 can be dismounted from the guide block seat 8 for replacement. The radially adjustable guide mechanism of the deep hole boring tool of the present invention can adjust the radial size of the guide block according to the overhang length of the tool tip, so as to meet the guide requirements of deep hole machining with different apertures, and is easy and fast to operate with high precision. , expanding the range of cutting tools, effectively reducing the cost of cutting tools.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (5)

1. A radially adjustable deep hole boring tool with a guide block, comprising a tool bar, characterized in that the front end of the tool bar is provided with a guide block radial adjustment mechanism, and the front end of the guide block radial adjustment mechanism is installed with a The guide block, the guide block and the guide block seat are set to three correspondingly. The guide block is fastened on the guide block seat by the guide block fastening screw. In the seat, the knife seat corresponding to the tail end of the blade is provided with a blade adjustment screw, and the corresponding guide block seat on the knife seat is provided with a guide block seat locking screw; the radial adjustment mechanism of the guide block includes a base connected with the knife bar, There is a body on the base, and a linkage plate is installed on the shaft sleeve of the body. One side of the linkage plate is set as a bevel tooth structure. There are three small bevel gears meshing with the bevel teeth on the linkage plate. The three small bevel gears are installed with clearance fit. In three holes evenly distributed on the circumference of the body. 2. A deep hole boring tool with radially adjustable guide block according to claim 1, characterized in that: said tool seat, body and base are fastened and connected by screws; said three small bevel gears are connected by The positioning screw is installed on the body to realize the radial position of the small bevel gear relative to the body; the contact between the linkage plate and the three guide block seats is set as a plane trapezoidal thread, and the linkage plate connects with the three guide blocks through the plane trapezoidal thread The trapezoidal threads on the seat are meshed, and the small bevel gear is turned by the adjustment wrench to drive the linkage plate to rotate, and then the three guide blocks are driven to move synchronously along the radial direction of the boring bar. 3. A deep hole boring tool with radially adjustable guide block according to claim 1, characterized in that: the base is fixedly connected to the tool bar through the base connecting screw, and the base is positioned and connected to the body through the second key , the base is positioned through the taper shaft and the taper hole on the end face of the knife rod, and the knife seat is positioned and connected to the body through the first key. 4. A deep hole boring tool with radially adjustable guide block according to claim 1, characterized in that: three locking screws of the guide block seat are set corresponding to the guide block seat, and after adjusting the radial position The guide block seat is pressed and the matching gap between the guide block seat and the plane thread of the linkage plate is eliminated to ensure the radial size of the guide block. 5. A radially adjustable deep hole boring tool with guide blocks according to claim 1, characterized in that: the three guide blocks lag behind the tool tip by 2 mm, and the installation position angles are 90° relative to the tool tip , 180° and 270°; the width of the guide block is 0.2 times the diameter of the boring head, and the length of the guide block is 26mm; the radial adjustment range of the guide block is 1.25 to 1.5 times the diameter of the boring head.