CN108788302B

CN108788302B - Reciprocating pull type fretsaw cutter

Info

Publication number: CN108788302B
Application number: CN201811111273.8A
Authority: CN
Inventors: 丁乃祥; 其他发明人请求不公开姓名
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-09-22
Filing date: 2018-09-22
Publication date: 2020-04-07
Anticipated expiration: 2038-09-22
Also published as: CN108788302A

Abstract

The invention relates to a reciprocating pull type fretsaw cutter, which belongs to the field of machinery and comprises a base, wherein an upright post is vertically fixed on the base, a lower fixed arm is fixed on the upright post, a pillar is vertically fixed at the left end of the lower fixed arm, an objective table fixed arm is fixed in the middle of the pillar, an objective table is fixed on the objective table fixed arm, and an upper support arm is fixed on the upper part of the pillar, and the reciprocating pull type fretsaw cutter is characterized in that: the motor is fixed on the base, the rotating shaft of the motor is sleeved with the fixed rotating wheel, the eccentric position of the rotating wheel is hinged with the reciprocating rod, the running direction is fixed, the structure is simple, and the manufacturing cost is low.

Description

Reciprocating pull type fretsaw cutter

Technical Field

The invention relates to a reciprocating pull type fretsaw cutter, and belongs to the field of machinery.

Background

The wire saw is designed by utilizing the principle of wire sawing to cut brittle and hard materials. The existing wire saw cutting machines which are commonly used have two types, one type is that a saw blade is fixed between U-shaped rocker arms, and the reciprocating motion of the saw blade is realized through reciprocating swinging the rocker arms to cut. However, when the rocker arm swings, the saw blade does not make reciprocating motion with a fixed direction, so that the rocker arm is only suitable for linear cutting and cannot cut curves with high precision requirements. The other type is that a saw blade (such as a diamond fretsaw) connected end to end is used, the saw blade is guided by a roller to move in a single direction, the whole length of the saw blade needs to be fixed with saw teeth (such as diamond particles), the manufacturing cost is high, and the roller and the saw blade are abraded due to friction and are not easy to replace.

Disclosure of Invention

According to the defects in the prior art, the technical problems to be solved by the invention are as follows: provides a reciprocating drawing type fretsaw cutter which has fixed running direction, simple structure and low manufacturing cost.

The invention relates to a reciprocating pull type fretsaw cutter, which comprises a base, wherein an upright post is vertically fixed on the base, a lower fixed arm is fixed on the upright post, a support column is vertically fixed at the left end of the lower fixed arm, an objective table fixed arm is fixed in the middle of the support column, an objective table is fixed on the objective table fixed arm, and an upper support arm is fixed on the upper part of the support column, and the reciprocating pull type fretsaw cutter is characterized in: fixed motor on the base, the fixed runner of suit on the motor shaft, the articulated reciprocating lever of runner eccentric position, fixed wire rope and lower wire rope respectively on the reciprocating lever, go up wire rope and lower wire rope end difference fixed connection saw blade both ends, set up the clearing hole on the objective table, the saw blade passes the clearing hole, at pillar and last arm fixation department, go up the arm end, the gyro wheel is all installed to fixed arm end and front end down, it all winds on corresponding gyro wheel with lower wire rope to go up the wire rope, will go up wire rope and wire rope strut down, and make and go up wire rope and lower wire rope and not touch other parts, the saw blade is perpendicular with the objective table.

Go up the fixed stand pipe on the support arm, the fixed stand pipe down of going up on the fixed arm, go up stand pipe and stand pipe axis down on same straight line, go up all cooperation sliders in stand pipe and the lower stand pipe, equal fixed connection extension rod on the slider, go up all along the axial setting fluting on stand pipe and the stand pipe lateral wall down, the fluting width is less than the slider diameter and is greater than the extension rod diameter, wire rope and lower wire rope are fixed respectively to two extension rod tip.

Set up straining device on the last support arm, straining device is including propping up the pole, it articulates on last support arm to prop up the pole lower extreme, prop up pole upper end installation gyro wheel, it jacks up the pole to prop up pole upper portion hinge, go up and still set up the regulation pole on the support arm, adjust the pole both ends cover in the sliding sleeve, the sliding sleeve is fixed on last support arm, fix a plurality of archs on the regulation pole, be the acute angle between arch and the regulation pole, the regulation pole tip sets up adjusting bolt, adjusting bolt cooperation is in adjusting nut, adjusting nut fixes on last support arm, it sets up the bearing to adjust between pole and the adjusting bolt, the bearing inner race is fixed on adjusting the pole, the bearing inner circle is fixed.

Set up hold-down mechanism on the objective table, hold-down mechanism includes the fixed board of last stand pipe lower extreme, sets up the movable plate under the fixed board, and the screw rod is pressed to two vertical fixation on the movable plate, presses the screw rod to pass fixed board, is equipped with two on the press screw rod and presses the nut, and two are pressed the nut and are located both sides about the fixed board respectively, all set up the breach on fixed board and the movable plate for the saw blade passes through and observes the cutting condition.

The pillar is channel steel, the channel is matched with a guide wheel, the guide wheel is fixed at the inner end of the tightening screw rod, the tightening screw rod is matched with a tightening nut, and the outer end of the tightening screw rod is fixed on the reciprocating rod. The length of the upper wire rope and the lower wire rope can be readjusted by loosening the jam nut.

The extension rod end part is provided with two pressing pieces, one of the pressing pieces is fixed on the extension rod, the corresponding positions of the two pressing pieces are provided with threaded holes, the two pressing pieces are fixedly connected through small bolts, the two pressing pieces directly clamp the saw blade, transverse lines are arranged on the clamping surfaces of the two pressing pieces, the friction force is increased, a hanging ring is arranged on the pressing pieces, the steel wire rope and the lower steel wire rope end part are fixedly hooked, and the connection between the steel wire rope and the pressing pieces is realized on the hanging ring through the hook.

Go up the wire rope and be connected with the couple through rotary joint and lower wire rope respectively, go up the wire rope and can take place the rotation with lower wire rope at the during operation, rotary joint prevents that the couple from hindering the wire rope rotation, avoids wire rope to twist off.

The objective table is provided with a dust suction pipe which is connected with a dust collector and used for cleaning dust and particles generated in the cutting process.

The reciprocating rod is provided with a plurality of hinge holes, and the rotating wheel is hinged with different hinge holes to adjust the motion amplitude of the reciprocating rod so as to adjust the cutting amplitude of the saw blade.

The working principle and the process are as follows:

before the device is used, the tensioning mechanism is adjusted to support the supporting rod, then the lower end of the jacking rod is clamped between the two corresponding bulges, so that the position of the supporting rod is fixed, the upper steel wire rope and the lower steel wire rope are tensioned, namely, the saw blade is tensioned, the adjusting bolt is rotated to drive the adjusting rod to feed, and further, the height of the supporting rod for supporting the upper steel wire rope is adjusted, and fine adjustment is realized;

adjusting a pressing mechanism according to the thickness of a cut workpiece, rotating pressing nuts positioned on two sides of a fixed plate on a pressing screw rod to enable the pressing nuts to leave the fixed plate, then moving a movable plate until the distance between the movable plate and an objective table is matched with the thickness of the workpiece, then keeping the movable plate immovable, rotating the pressing nuts on two sides of the fixed plate to enable the two pressing nuts to tightly squeeze the fixed plate, and further fixing the position of the movable plate;

the motor is started, the motor drives the rotating wheel to rotate, the rotating wheel drives the reciprocating rod to do reciprocating motion, the upper steel wire rope and the lower steel wire rope are further driven to pull the saw blade in a reciprocating mode, the workpiece is placed on the objective table and cut through the saw blade of the fretsaw, if feeding is carried out when the saw blade is lifted, the saw blade can drive the workpiece to be lifted, the movable plate has a pressing effect on the workpiece, the workpiece is prevented from shifting, and the saw blade can be prevented from being broken due to shifting of the workpiece;

when the saw blade is replaced, the jacking rod is separated from the bulge at first, so that the upper steel wire rope and the lower steel wire rope are loosened, the small bolt on the pressing piece is loosened, then the small bolt is screwed tightly after a new saw blade is replaced, the saw blade is squeezed tightly again, then the jacking rod is propped up again, the first step is repeated, the jacking rod is separated from the bulge when not used, so that the upper steel wire rope and the lower steel wire rope are loosened, and the fatigue of the steel wire rope is reduced.

Compared with the prior art, the invention has the beneficial effects that:

the reciprocating pull type fretsaw cutter has the advantages of fixed running direction, simple structure, stable running and low manufacturing cost, and is very suitable for popularization.

Drawings

FIG. 1 is a schematic view of an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of embodiment A shown in FIG. 1;

FIG. 3 is an enlarged view of a portion of embodiment B shown in FIG. 1;

FIG. 4 is a schematic cross-sectional view of the embodiment A-A shown in FIG. 1;

FIG. 5 is a schematic cross-sectional view of embodiment B-B shown in FIG. 3.

In the figure: 1. a pillar; 2. tightly pressing the nut; 3. a reciprocating lever; 4. a hinge hole; 5. a rotating wheel; 6. a motor; 7. a base; 8. an objective table fixing arm; 9. a lower fixed arm; 10. a lower guide tube; 11. an object stage; 12. an upper guide tube; 13. feeding a steel wire rope; 14. a roller; 15. an upper support arm; 16. a support rod; 17. jacking up the rod; 18. adjusting the bolt; 19. adjusting the nut; 20. a bearing; 21. a steel wire rope is arranged; 22. an extension rod; 23. a compression sheet; 24. a guide wheel; 25. tightly extruding the screw rod; 26. fixing a plate; 27. a slider; 28. pressing the nut; 29. pressing the screw; 30. a notch; 31. a saw blade; 32. through the hole; 33. and (6) moving the plate.

Detailed Description

Embodiments of the invention are further described below with reference to the accompanying drawings:

as shown in fig. 1-5, the reciprocating pull-out wire saw cutter of the present invention comprises a base 7, a vertical fixed column on the base 7, a lower fixed arm 9 fixed on the column, a pillar 1 fixed vertically at the left end of the lower fixed arm 9, an object stage fixed arm 8 fixed at the middle of the pillar 1, an object stage fixed arm 8 fixed on the object stage fixed arm 8, and an upper support arm 15 fixed at the upper part of the pillar 1, and is characterized in that: fixed motor 6 on the base 7, fixed runner 5 of suit in the motor 6 pivot, runner 5 eccentric position articulates reciprocating rod 3, fixed wire rope 13 and lower wire rope 21 respectively on the reciprocating rod 3, go up wire rope 13 and lower wire rope 21 end fixed connection saw blade 31 both ends respectively, set up the clearing hole 32 on the objective table 11, saw blade 31 passes the clearing hole 32, in pillar 1 and the fixed department of upper arm 15, the upper arm 15 is terminal, gyro wheel 14 is all installed to lower fixed arm 9 end and front end, go up wire rope 13 and lower wire rope 21 and all wind on corresponding gyro wheel 14, prop up wire rope 13 and lower wire rope 21, and make go up wire rope 13 and lower wire rope 21 and not touch other parts, saw blade 31 is perpendicular with objective table 11.

Go up the fixed stand pipe 12 of going up on the support arm 15, stand pipe 10 under the fixed arm is gone up to the fixed arm, go up stand pipe 12 and stand pipe 10 axis down on the collinear, go up stand pipe 12 and all cooperate slider 27 in the stand pipe 10 down, equal fixed connection extension rod 22 on the slider 27, go up stand pipe 12 and all set up the fluting along the axial on the stand pipe 10 lateral wall down, the fluting width is less than slider 27 diameter and is greater than the extension rod 22 diameter, wire rope 13 and lower wire rope 21 are fixed respectively to two extension rod 22 tip.

Set up straining device on last support arm 15, straining device is including propping up pole 16, prop up pole 16 lower extreme and articulate on last support arm 15, prop up pole 16 upper end installation gyro wheel 14, prop up pole 16 upper portion articulated jack-up pole 17, go up and still set up the regulation pole on the arm 15, adjust the pole both ends cover in the sliding sleeve, the sliding sleeve is fixed on last support arm 15, fix a plurality of archs on the regulation pole, be the acute angle between arch and the regulation pole, the regulation pole tip sets up adjusting bolt 18, adjusting bolt 18 cooperates in adjusting nut 19, adjusting nut 19 is fixed on last support arm 15, set up bearing 20 between regulation pole and the adjusting bolt 18, the bearing 20 outer lane is fixed on adjusting the pole, the bearing 20 inner circle is fixed on adjusting bolt 18.

Set up hold-down mechanism on the objective table 11, hold-down mechanism includes the fixed plate 26 that the lower extreme of last stand pipe 12 is fixed, sets up movable plate 33 under the fixed plate 26, two press screw 29 of vertical fixation on the movable plate 33, press screw 29 and pass fixed plate 26, press and be equipped with two on the screw 29 and press nut 28, two press nut 28 are located fixed plate 26 upper and lower both sides respectively, all set up breach 30 on fixed plate 26 and the movable plate 33 for saw blade 31 passes through and observes the cutting condition.

The pillar 1 is a channel steel, the channel of the pillar is matched with a guide wheel 24, the guide wheel 24 is fixed at the inner end of a tightening screw rod 25, the tightening screw rod 25 is matched with a tightening nut 2, and the outer end of the tightening screw rod 25 is fixed on a reciprocating rod 3. Loosening the jam nut 2 allows the lengths of the upper wire rope 13 and the lower wire rope 21 to be readjusted.

Extension rod 22 tip sets up two clamping pieces 23, one of them clamping piece 23 is fixed on extension rod 22, two clamping pieces 23 correspond the position and set up the screw hole, two clamping pieces 23 are through little bolt fixed connection, two clamping pieces 23 directly press from both sides tight saw blade 31, set up horizontal line on the clamping face of two clamping pieces 23, increase frictional force, set up the link on the clamping piece 23, go up

wire rope

13 and 21 end fixing couples of lower wire rope, collude through the couple and realize being connected of wire rope and clamping piece 23 on the link.

Go up wire rope 13 and be connected with the couple through rotary joint and lower wire rope 21 respectively, go up wire rope 13 and lower wire rope 21 and can take place the rotation at the during operation, rotary joint prevents that the couple from hindering the wire rope rotation, avoids wire rope to twist off.

The objective table 11 is provided with a dust suction pipe which is connected with a dust collector and used for cleaning dust and particles generated in the cutting process.

The reciprocating rod 3 is provided with a plurality of hinge holes 4, and the rotating wheel 5 is hinged with different hinge holes 4 to adjust the motion amplitude of the reciprocating rod 3, so as to adjust the cutting amplitude of the saw blade 31.

The working principle and the process are as follows:

before use, the tensioning mechanism is adjusted to support the supporting rod 16, then the lower end of the jacking rod 17 is clamped between the two corresponding bulges, so that the position of the supporting rod 16 is fixed, the upper steel wire rope 13 and the lower steel wire rope 21 are tensioned, namely the saw blade 31 is tensioned, the adjusting bolt 18 is rotated, the adjusting bolt 18 drives the adjusting rod to feed, and then the height of the supporting rod 16 for supporting the upper steel wire rope 13 is adjusted, and fine adjustment is realized;

adjusting a pressing mechanism according to the thickness of a cut workpiece, rotating pressing nuts 28 on pressing screw rods 29, which are positioned on two sides of a fixed plate 26, so that the pressing nuts are separated from the fixed plate 26, then moving a movable plate 33 until the distance between the movable plate 33 and an object stage 11 is matched with the thickness of the workpiece, then keeping the movable plate 33 immovable, rotating the pressing nuts 28 on two sides of the fixed plate 26, so that the two pressing nuts 28 tightly extrude the fixed plate 26, and further fixing the position of the movable plate 33;

starting the motor 6, driving the rotating wheel 5 to rotate by the motor 6, driving the reciprocating rod 3 to reciprocate by the rotating wheel 5, further driving the upper steel wire rope 13 and the lower steel wire rope 21 to pull the saw blade 31 in a reciprocating manner, placing a workpiece on the objective table 11, cutting by the saw blade 31 of the fretsaw, if feeding happens when the saw blade 31 is lifted, the saw blade 31 can drive the workpiece to lift, the movable plate 33 has a pressing effect on the workpiece, so that the workpiece is prevented from shifting, and the saw blade 31 can be prevented from being broken due to the shifting of the workpiece;

when the saw blade 31 is replaced, the jacking rod is separated from the bulge to loosen the upper steel wire rope 13 and the lower steel wire rope 21, the small bolt on the pressing piece 23 is loosened, the small bolt is screwed after the new saw blade 31 is replaced, the saw blade 31 is squeezed again, the jacking rod 16 is propped up again, the first step is repeated, the jacking rod is separated from the bulge when not used, the upper steel wire rope 13 and the lower steel wire rope 21 are loosened, and the fatigue of the steel wire ropes is reduced.

The rollers 14 in the embodiments all serve the same function and are indicated by the same reference numeral 14.

Claims

1. The utility model provides a reciprocal pull formula coping saw cutterbar, includes base (7), vertical fixed post on base (7), fixed arm (9) under the fixed on the stand, fixed arm (9) left end vertical fixed post (1) down, pillar (1) middle part fixed objective table fixed arm (8), fixed objective table (11) on objective table fixed arm (8), support arm (15) in pillar (1) upper portion is fixed, its characterized in that: a motor (6) is fixed on a base (7), a fixed rotating wheel (5) is sleeved on a rotating shaft of the motor (6), the eccentric position of the rotating wheel (5) is hinged with a reciprocating rod (3), an upper steel wire rope (13) and a lower steel wire rope (21) are respectively fixed on the reciprocating rod (3), the tail ends of the upper steel wire rope (13) and the lower steel wire rope (21) are respectively and fixedly connected with the two ends of a saw blade (31), a through hole (32) is arranged on an objective table (11), the saw blade (31) penetrates through the through hole (32), rollers (14) are respectively arranged at the fixed position of a strut (1) and an upper support arm (15), the tail end of the upper support arm (15), the tail end of a lower fixed arm (9) and the front end of the strut (9), the upper steel wire rope (13) and the lower steel wire rope (21) are respectively wound on the corresponding rollers (14), the upper steel wire rope (13) and the lower steel wire rope (21) are supported, the saw blade (31) is vertical to the objective table (11);

an upper guide pipe (12) is fixed on an upper support arm (15), a lower guide pipe (10) is fixed on a lower fixing arm, the central axes of the upper guide pipe (12) and the lower guide pipe (10) are on the same straight line, sliding blocks (27) are matched in the upper guide pipe (12) and the lower guide pipe (10), extension rods (22) are fixedly connected on the sliding blocks (27), grooves are axially formed in the side walls of the upper guide pipe (12) and the lower guide pipe (10), the width of each groove is smaller than the diameter of the sliding block (27) and larger than the diameter of the extension rod (22), and an upper steel wire rope (13) and a lower steel wire rope (21) are respectively fixed at the end parts of the two extension rods (22);

the tensioning mechanism is arranged on the upper support arm (15) and comprises a supporting rod (16), the lower end of the supporting rod (16) is hinged to the upper support arm (15), a roller (14) is installed at the upper end of the supporting rod (16), the upper portion of the supporting rod (16) is hinged to a jacking rod (17), an adjusting rod is further arranged on the upper support arm (15), two ends of the adjusting rod are sleeved in sliding sleeves, the sliding sleeves are fixed on the upper support arm (15), a plurality of bulges are fixed on the adjusting rod, acute angles are formed between the bulges and the adjusting rod, an adjusting bolt (18) is arranged at the end portion of the adjusting rod, the adjusting bolt (18) is matched in an adjusting nut (19), the adjusting nut (19) is fixed on the upper support arm (15), a bearing (20) is arranged between the adjusting rod and the adjusting bolt (18), the outer ring of the bearing (20) is fixed on the adjusting rod;

set up hold-down mechanism on objective table (11), hold-down mechanism includes fixed plate (26) that stand pipe (12) lower extreme is fixed, set up movable plate (33) under fixed plate (26), two vertical fixation press screw rods (29) on movable plate (33), press screw rod (29) and pass fixed plate (26), it presses nut (28) to be equipped with two on pressing screw rod (29), two press nut (28) are located both sides about fixed plate (26) respectively, all set up breach (30) on fixed plate (26) and movable plate (33), be used for saw blade (31) through and observe the cutting condition.

2. The reciprocating pull wiresaw cutter as claimed in claim 1, wherein: the strut (1) is groove-shaped steel, a guide wheel (24) is matched in a groove of the strut, the guide wheel (24) is fixed at the inner end of a squeezing screw rod (25), a squeezing nut (2) is matched on the squeezing screw rod (25), the outer end of the squeezing screw rod (25) is fixed on a reciprocating rod (3), and the length of an upper steel wire rope (13) and the length of a lower steel wire rope (21) can be readjusted by loosening the squeezing nut (2).

3. The reciprocating pull wiresaw cutter as claimed in claim 2, wherein: extension rod (22) tip sets up two cramps (23), one of them cramp (23) are fixed on extension rod (22), two cramps (23) correspond the position and set up the screw hole, two cramps (23) are through little bolt fixed connection, two cramps (23) directly press from both sides tight saw blade (31), set up horizontal line on the clamping face of two cramps (23), increase frictional force, set up the link on cramp (23), go up wire rope (13) and wire rope (21) end fixing couple down, collude through the couple and realize being connected of wire rope and cramp (23) on the link.

4. The reciprocating pull wiresaw cutter as claimed in claim 3, wherein: the upper steel wire rope (13) and the lower steel wire rope (21) are connected with the hook through rotary joints respectively, and the upper steel wire rope (13) and the lower steel wire rope (21) can rotate during working.

5. The reciprocating pull wiresaw cutter as claimed in claim 4, wherein: the objective table (11) is provided with a dust suction pipe which is connected with a dust collector and used for cleaning dust and particles generated in the cutting process.

6. The reciprocating pull wiresaw cutter as claimed in claim 5, wherein: the reciprocating rod (3) is provided with a plurality of hinge holes (4), and the rotating wheel (5) is hinged with different hinge holes (4) to adjust the motion amplitude of the reciprocating rod (3) so as to adjust the cutting amplitude of the saw blade (31).