CN215356543U

CN215356543U - Tool for scraping front and back sides of box wall through hole

Info

Publication number: CN215356543U
Application number: CN202121580430.7U
Authority: CN
Inventors: 汤伯虎; 丁荣宝; 王晨
Original assignee: CSSC Marine Power Zhenjiang Co Ltd
Current assignee: CSSC Marine Power Zhenjiang Co Ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2021-12-31
Anticipated expiration: 2031-07-13

Abstract

The utility model discloses a box wall through hole front and back side strickle tool, wherein one end of a cutter bar is fixed on a machine tool main shaft; the combined cutter heads are fixed on one side of the cutter head in a centrosymmetric manner, the base bushing is pressed and fixed on the other end of the cutter bar, the friction bushing and the protection bushing are respectively pressed and fixed on two ends of the base bushing, the protection bushing penetrates through the corresponding through hole of the box wall, the end cover, the support pillar, the cutter head, the base bushing, the friction bushing and the protection bushing are fixedly connected into a whole, and the cutting edges of the blades of the pair of combined cutter heads are right opposite to the inner plane of the through hole on the inner side or the outer side of the box wall. The utility model can respectively carry out the cutting processing of forward scraping and backward scraping on the planes at the two sides of the through hole of the box wall by only using the same set of cutter, thereby obviously improving the processing efficiency and the processing quality and reducing the processing cost. The processing method is suitable for processing boxes of various models, and has good universality.

Description

Tool for scraping front and back sides of box wall through hole

Technical Field

The utility model relates to a special cutting tool for cutting box parts, in particular to a special cutting tool capable of respectively scraping planes on the outer sides of through holes on the inner side and the outer side of a box wall, and belongs to the technical field of metal cutting.

Background

The box parts generally have a plurality of through holes, and the inner side and the outer side of the box wall near the through holes are respectively required to be subjected to corresponding forward scraping processing and reverse scraping processing so as to be used as the mounting reference of a bearing, an end cover or other parts, and the forward scraping and reverse scraping cutting processing quality directly influences the assembly quality of the parts, thereby influencing the performance and the service life of the whole machine.

Some box class parts need just scrape the processing with the plane diameter of anti-scraping processing far away than the through-hole aperture, and because the restriction of position or part shape, can't realize a clamping and use a cutter can accomplish the processing of scraping positively and anti-scraping of the interior lateral surface of tank wall through-hole, influence processingquality, prolonged processing cycle, increased the processing cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a box wall through hole front and back face strickling tool and an assembling method, which can improve the processing quality and reduce the processing cost.

The utility model is realized by the following technical scheme:

a box wall through hole front and back side strickle tool comprises a tool shank, a tool bar, a tool disc, a pair of combined tool bits, a basic bushing, a friction bushing, a protective bushing and an end cover, wherein a conical end of the tool shank is inserted and fixed in a main shaft hole of a machine tool, a cylindrical end of the tool shank is inserted and positioned in the center of one end of the tool bar, and the tool bar is fixedly connected with a main shaft of the machine tool through connecting screws respectively penetrating through two sides of a flange at one end of the tool bar; the combined cutter heads are fixed on one side of the cutter head in a centrosymmetric manner, the base bushing is pressed and fixed on the support column at the other end of the cutter bar, and the friction bushing and the end surface of the protection bushing are pressed and fixed on two ends of the base bushing in an abutting manner; the protection bush passes through the corresponding box wall through hole and is in clearance fit with the corresponding box wall through hole; the center of the cutter head is fixed on one end of the support column of the cutter bar through a pair of flat keys, one end of the friction lining is abutted against one side of the cutter head, the end cover is pressed on the other end of the basic lining, and the end cover, the support column, the cutter head, the basic lining, the friction lining and the protection lining are fixedly connected into a whole through screws; the cutting edges of the blades of the combined cutter heads are opposite to the inner plane of the through hole on the inner side of the box wall or the outer plane of the through hole on the outer side of the box wall.

The object of the utility model is further achieved by the following technical measures.

Further, blade disc one side is equipped with fan-shaped evenly distributed's several pairs of cutter body grooves, and every pair of cutter body groove becomes central symmetry with the blade disc axis, the cutter body groove includes the mounting groove of rectangular channel and bottom surface slope, the adjacent limit of rectangular channel and mounting groove links to each other, corresponds with the shape of combination tool bit bottom both sides respectively, still be equipped with the screw hole that the several interval set up and be used for fixed combination tool bit on the mounting groove, the axis perpendicular to blade disc plane of screw hole. One side of a cutter body groove of the cutter head is provided with an annular groove, and one end of the friction lining is abutted against the bottom surface of the annular groove.

Furthermore, the bottom side of the cutter body of the combined cutter head comprises a convex strip and a slope which are connected with adjacent sides and correspond to the rectangular groove and the mounting groove of the cutter head, and the convex strip and the slope are respectively embedded and positioned in the rectangular groove and the cutter body groove corresponding to the cutter head; the cutter body is longitudinally inverted L-shaped, and the cutter body is fixed on the corresponding position of a pair of cutter body grooves of the cutter head respectively by a fastening screw which passes through the cutter body and is screwed into the corresponding threaded hole of the cutter head; the blade of the combined cutter head is fixed on the inverted L-shaped transverse edge through a compression screw, and the cutting edge of the blade is parallel to the central plane of the box wall. The blade is a polygonal hard alloy blade.

Furthermore, the basic lining and the friction lining are made of carbon steel, and the protective lining is made of bronze.

The utility model adopts a structure that a support column, a cutter head, a basic bushing, a friction bushing and a protection bushing at one end of a cutter bar are fixedly connected into a whole through an end cover and a screw, and different assembling structures of forward installation or reverse installation of the cutter head, and can respectively carry out cutting processing of forward scraping and reverse scraping on planes at two sides of a box wall through hole of a box body which is clamped and aligned once only by using the same set of cutter. The utility model obviously improves the processing efficiency and the processing quality and reduces the processing cost. The combined tool bit can be fixed at different radial positions of the cutter head so as to meet the requirements of forward scraping cutting machining or reverse scraping cutting machining of planes with different diameters on the inner side and the outer side of the through hole of the box wall, the adjustment is very convenient, the combined tool bit is suitable for scraping cutting machining of box walls of various models, and the universality is good.

Advantages and features of the present invention will be illustrated and explained by the following non-restrictive description of preferred embodiments thereof, given by way of example only with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic structural view of a cutter head being assembled for forward scraping cutting operation;

FIG. 2 is a schematic structural view of a cutter head reversely mounted for reverse scraping cutting;

FIG. 3 is an enlarged view of section I of FIG. 1;

FIG. 4 is an enlarged view of section II of FIG. 2;

FIG. 5 is a schematic view of the composite cutter head mounted on the cutter head;

fig. 6 is an enlarged view of a direction a of fig. 5.

Detailed Description

The utility model is further illustrated by the following figures and examples.

In the description of the present invention, terms indicating orientation or position such as "inner", "outer", "left", "right", etc., are based on the orientation shown in the drawings only for the purpose of simplifying the description, and do not indicate or imply that the present invention must have a specific orientation or position.

As shown in fig. 1 and 2, the present invention includes a tool holder 1, a tool bar 2, a tool pan 3, a pair of combined tool bits 4, a base bushing 5, a friction bushing 6, a protection bushing 7 and an end cover 8, wherein a tapered end 11 of the tool holder 1 is inserted and fixed in a spindle hole 101 of a machine tool, a cylindrical end 12 of the tool holder 1 is inserted and positioned in the center of the left end of the tool bar 2, and the tool bar 2 is fixedly connected with a spindle 100 of the machine tool by connecting screws 14 respectively passing through two sides of a left end flange 13 of the tool bar.

As shown in fig. 3 to 6, one side of the cutter disc 3 is provided with 4 pairs of cutter body grooves 31 which are uniformly distributed in a fan shape, each pair of cutter body grooves 31 is symmetrical with the axis of the cutter disc 3 in a center, each cutter body groove 31 comprises a rectangular groove 311 and a mounting groove 312 with an inclined bottom surface, the adjacent sides of the rectangular groove 311 and the mounting groove 312 are connected and respectively correspond to the shapes of the two sides of the bottom of the combined cutter head 4, and the mounting groove 312 is further provided with 4 threaded holes 33 which are arranged at intervals and used for fixing the combined cutter head 4, so that the combined cutter head 4 is positioned and fixed on different positions on the mounting groove 312 to form 4 different cutting radiuses, the scraping processing requirements of boxes with different sizes are met, and the universality of the utility model is improved. Or the combined cutter head 4 is fixed on different mounting grooves 312, so that the service life of the cutter head 3 is greatly prolonged. The axis of the threaded hole 33 is perpendicular to the plane of the cutter head 3, so that the combined cutter head 4 can be fixed conveniently.

The combined cutter head 4 is fixed on one side of the cutter head 3 in a centrosymmetric manner, the bottom side of the cutter body 41 of the combined cutter head 4 comprises a convex strip 411 and a slope 412 which are connected with adjacent sides and correspond to the rectangular groove 311 and the mounting groove 312 of the cutter head 3, and the convex strip 411 and the slope 412 are respectively embedded and positioned in the rectangular groove 311 and the cutter body groove 312 corresponding to the cutter head 3. The cutter body 41 is longitudinally inverted L-shaped, and the cutter bodies 41 are fixed at corresponding positions of a pair of cutter body grooves 312 of the cutter head 3 by fastening screws 43 which pass through the cutter body 41 and are screwed into corresponding threaded holes 33 of the cutter head 3. The protrusion 411 serves to position the fastening screw 43 from lateral forces during the scraping process. The blade 42 of the modular cutting head 4 is secured to the transverse side 413 of the inverted L by a compression screw 44, with the cutting edge 421 of the blade parallel to the central plane of the tank wall 200. The insert 42 of this embodiment is a triangular cemented carbide insert that can be used with an indexable insert, which increases the useful life of the insert 42.

As shown in fig. 3 and 4, the base bushing 5 is press-fitted and fixed to the support column 21 at the right end of the tool bar 2, and the two are interference-fitted. The friction bush 6 and the protection bush 7 are pressed and fixed on two ends of the basic bush 5 in a propping manner, and the friction bush 6, the protection bush 7 and the basic bush 5 are in interference fit respectively. The protective bush 7 passes through the corresponding tank wall through hole 201 and is in clearance fit with the corresponding tank wall through hole 201, so that the basic bush 5, the friction bush 6 and the protective bush 7 can rotate together with the cutter bar 2 around the tank wall through hole 201 in a conical shape. The center of the cutter head 3 is fixed on one end of the support column 21 of the cutter bar 2 through a pair of flat keys 211, one side of the cutter body groove 31 of the cutter head 3 is provided with a ring groove 32, and one end of the friction lining 6 is abutted against the bottom surface of the ring groove 32, so that the friction lining 6 is axially positioned.

The end cover 8 presses on the other end of the base bushing 5, and the end cover 8, the support pillar 21, the cutter head 3, the base bushing 5, the friction bushing 6 and the protection bushing 7 are fixedly connected into a whole through a screw 81. The blade cutting edges 421 of the pair of combined cutting heads 4 face the inner plane 202 of the tank wall through hole on the inner side of the tank wall 200 or the outer plane 203 of the tank wall through hole on the outer side of the tank wall 200.

The base bushing 5 and the friction bushing 6 are both made of carbon steel, and the protective bushing 7 is made of bronze.

The assembly process of the utility model is as follows:

1) the combined cutter head 4 is respectively fixed on the cutter head 3, the blade 42 is firstly fixed on the inverted L-shaped transverse edge 413 of the cutter body 41 through the compression screw 44, and then the position of the combined cutter head 4 respectively fixed on the pair of cutter body grooves 31 is determined according to the diameter of a plane to be scraped. Finally, the assembled combined cutter head 4 is fixed at the corresponding positions of the pair of cutter body grooves 31 through the fastening screws 43 respectively, so that the convex strips 411 at the left side of the cutter body 41 are embedded in the corresponding rectangular grooves 311 positioned in the cutter head 3 respectively as shown in fig. 6, the inclined surface 412 at the right side of the cutter body 41 is pressed against the inclined bottom surface of the cutter body groove 312, and the blade cutting edges 421 are respectively parallel to the central plane of the box wall.

2) The combined body of the cutter bar 2 and the cutter handle 1 is assembled, the conical end 11 of the cutter handle 1 is inserted and fixed in the conical hole 101 of the machine tool spindle, the cylindrical end 12 of the cutter handle 1 is inserted and positioned in the left end of the cutter bar 2, and the machine tool spindle 100 and the cutter bar 2 are fixedly connected through fastening screws 13 respectively penetrating through two sides of a flange 12 at the left end of the cutter bar. A pair of flat keys 211, which are 180 ° from each other, are mounted on the support column 21 of the tool bar 2.

3) Cutter head 3 and each bush are installed on cutter arbor 2's support column 21, and one end that keeps away from handle of a knife 1 at cutter arbor 2 is that install cutter head 3, basic bush 5, friction bush 6 and protection bush 7 on the right-hand member, then according to strickle the inboard plane 202 of tank wall through-hole just promptly and strickle the different operating modes that tank wall through-hole outside plane 203 promptly swiped reversely, carry out the assembly of following difference:

3.1) the cutter head 3 is positively mounted for positive scraping and cutting, as shown in fig. 3 and 4, the cutter head 3 is firstly mounted on the support pillar 21 of the cutter bar 2, so that the blade cutting edge 421 of the combined cutter head 4 on the cutter head 3 faces towards the right and deviates from the direction of the cutter handle 1, as shown in fig. 5, the key grooves 341 on two sides of the cutter head center hole 34 are respectively embedded on the corresponding flat keys 211, and the basic bushing 5 is pressed and fixed on the support pillar 21 at the right end of the cutter bar 2. Then, the friction bush 6 and the protection bush 7 are sequentially pressed and fixed on two ends of the basic bush 5 in an abutting mode through a left end face and a right end face as shown in fig. 3, and the friction bush 6 is close to the knife handle 1, namely on the left end of the basic bush 5; the protective bushing 7 is remote from the tool shank 1, i.e. on the right end of the basic bushing 5. The left end of the friction bush 6 is embedded in the ring groove 32 positioned in the cutter disc 3. The end cover 8 is pressed on the right end of the basic bushing 5, and the end cover 8, the supporting column 21, the cutter head 3, the basic bushing 5, the friction bushing 6 and the protection bushing 7 are fixedly connected into a whole through a screw 81. Then, starting the machine tool, so that the machine tool spindle 100 drives the cutter bar 2 to move outwards until the protection bushing 5 on the support pillar 21 at the right end of the cutter bar 2 extends into the through hole 201 of the box wall, and the outer circular surface of the protection bushing 7 is in clearance fit with the through hole 201 of the box wall, so that the cutter bar 1 can rotate conveniently; the blade cutting edges 421 of the pair of combined cutting heads 4 on the cutter disc 3 are aligned to the right with the inner side plane 202 of the through hole of the box wall. The machine tool spindle 100 can be started to finish the positive scraping and cutting processing of the inner side plane 202 of the tank wall through hole.

3.2) reversely installing the cutter head 3 for reverse scraping and cutting, as shown in fig. 4 and 5, firstly pressing and fixing the base bushing 5 on a support column 21 at the right end of the cutter bar 2, and then pressing and fixing the protective bushing 7 and the left and right end surfaces of the friction bushing 6 on the two ends of the base bushing 5 in a propping manner in sequence, wherein the friction bushing 6 deviates from the cutter handle 1, namely on the right end of the base bushing 5; the protective bushing 7 is close to the shank 1, i.e. on the left end of the basic bushing 5. And then starting the machine tool, so that the machine tool spindle 100 drives the cutter bar 2 to move outwards until the protection bush 7 on the support pillar 21 at the right end of the cutter bar 2 extends into the box wall through hole 201, the right end of the basic bush 5 and the right end of the friction bush 6 extend out of the box wall through hole 201, and the outer circular surface of the protection bush 7 is in clearance fit with the corresponding box wall through hole 201. Then the cutter head 3 is turned 180 degrees and embedded into the supporting column 21 of the cutter bar 2 which extends out of the outer side surface of the through hole of the box wall, so that the key grooves 341 at two sides of the central hole 34 of the cutter head are respectively embedded into the corresponding flat keys 211, the end head of the right end of the friction bush 6 is embedded and positioned in the annular groove 32 of the cutter head 3, and the blade cutting edge 421 of the combined cutter head 4 on the cutter head 3 faces towards the left and faces towards the direction of the cutter handle 1. The end cover 8 is pressed on the right side of the cutter head 3 and the right end of the supporting column 21, the screw 81 is screwed down, so that the end cover 8, the supporting column 21, the cutter head 3, the base bushing 5, the friction bushing 6 and the protection bushing 7 are fixedly connected into a whole, and the blade cutting edges 421 of the pair of combined cutter heads 4 on the cutter head 3 are aligned to the outer side plane 203 of the through hole of the box wall. The machine tool spindle 100 can be started to complete the reverse scraping and cutting processing of the outer side plane 203 of the tank wall through hole.

In addition to the above embodiments, the present invention may have other embodiments, and any technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of the claims of the present invention.

Claims

1. The utility model provides a case wall through-hole positive and negative strickle off cutter which characterized in that: the tool comprises a tool shank, a tool bar, a tool disc, a pair of combined tool bits, a basic bushing, a friction bushing, a protection bushing and an end cover, wherein the conical end of the tool shank is inserted and fixed in a main shaft hole of a machine tool, the cylindrical end of the tool shank is inserted and positioned in the center of one end of the tool bar, and the tool bar is fixedly connected with the main shaft of the machine tool through connecting screws respectively penetrating through two sides of a flange at one end of the tool bar; the combined cutter heads are fixed on one side of the cutter head in a centrosymmetric manner, the base bushing is pressed and fixed on the support column at the other end of the cutter bar, and the friction bushing and the end surface of the protection bushing are pressed and fixed on two ends of the base bushing in an abutting manner; the protection bush passes through the corresponding box wall through hole and is in clearance fit with the corresponding box wall through hole; the center of the cutter head is fixed on one end of the support column of the cutter bar through a pair of flat keys, one end of the friction lining is abutted against one side of the cutter head, the end cover is pressed on the other end of the basic lining, and the end cover, the support column, the cutter head, the basic lining, the friction lining and the protection lining are fixedly connected into a whole through screws; the cutting edges of the blades of the combined cutter heads are opposite to the inner plane of the through hole on the inner side of the box wall or the outer plane of the through hole on the outer side of the box wall.

2. The tool for scraping the front and back sides of the through hole in the box wall as claimed in claim 1, wherein: the cutter head comprises a cutter head body and is characterized in that a plurality of pairs of cutter body grooves which are uniformly distributed in a fan shape are arranged on one side of the cutter head, each pair of cutter body grooves are centrosymmetric with the axis of the cutter head, each cutter body groove comprises a rectangular groove and a mounting groove with an inclined bottom surface, the adjacent sides of the rectangular groove and the mounting groove are connected and respectively correspond to the shapes of two sides of the bottom of the combined cutter head, a plurality of threaded holes which are arranged at intervals and used for fixing the combined cutter head are further formed in the mounting grooves, and the axis of each threaded hole is perpendicular to the plane of the cutter head.

3. The tool for scraping the front and back sides of the through hole in the box wall as claimed in claim 2, wherein: the bottom side of the cutter body of the combined cutter head comprises a convex strip and an inclined plane which are connected with adjacent sides and correspond to the rectangular groove and the mounting groove of the cutter head, and the convex strip and the inclined plane are respectively embedded and positioned in the rectangular groove and the cutter body groove corresponding to the cutter head; the cutter body is longitudinally inverted L-shaped, and the cutter body is fixed on the corresponding position of a pair of cutter body grooves of the cutter head respectively by a fastening screw which passes through the cutter body and is screwed into the corresponding threaded hole of the cutter head; the blade of the combined cutter head is fixed on the inverted L-shaped transverse edge through a compression screw, and the cutting edge of the blade is parallel to the central plane of the box wall.

4. The tool for scraping the front and back sides of the through hole in the box wall as claimed in claim 1, wherein: one side of a cutter body groove of the cutter head is provided with an annular groove, and one end of the friction lining is abutted against the bottom surface of the annular groove.

5. The tool for scraping the front and back sides of the through hole in the box wall as claimed in claim 3, wherein: the blade is a polygonal hard alloy blade.

6. The tool for scraping the front and back sides of the through hole in the box wall as claimed in claim 1, wherein: the material of basic bush and friction bush is carbon steel, and the material of protection bush is bronze.