CN103433522A - Steel plate spring automatic drilling equipment and automatic drilling method - Google Patents

Steel plate spring automatic drilling equipment and automatic drilling method Download PDF

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Publication number
CN103433522A
CN103433522A CN2013103792050A CN201310379205A CN103433522A CN 103433522 A CN103433522 A CN 103433522A CN 2013103792050 A CN2013103792050 A CN 2013103792050A CN 201310379205 A CN201310379205 A CN 201310379205A CN 103433522 A CN103433522 A CN 103433522A
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CN
China
Prior art keywords
leaf spring
drilling machine
slide block
steel leaf
guide rail
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CN2013103792050A
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Chinese (zh)
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CN103433522B (en
Inventor
廖承红
刘进乐
王行坦
孔南方
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武汉奋进机电有限公司
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Priority to CN201310379205.0A priority Critical patent/CN103433522B/en
Publication of CN103433522A publication Critical patent/CN103433522A/en
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Publication of CN103433522B publication Critical patent/CN103433522B/en

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Abstract

The invention discloses steel plate spring automatic drilling equipment and an automatic drilling method, and relates to the field of steel plate spring drilling. The equipment comprises a drilling machine, a clamp, a roller way support, a transverse pushing device, a feeding roller way, a discharging roller way, a transverse locating device and a longitudinal locating device. The drilling machine includes a drilling machine stand column and a drilling machine base, the drilling machine stand column is fixed on one side of the drilling machine base, the clamp is fixed on the other side of the drilling machine base, and the transverse pushing device is fixed on the lower portion of the drilling machine stand column; the clamp comprises a clamp base, and the transverse locating device is arranged on the clamp base; the roller way support stretches across above the drilling machine base, and the feeding roller way, the discharging roller way and the longitudinal locating device are arranged on the roller way support. According to the steel plate spring automatic drilling equipment and the automatic drilling method, automatic drilling of a steel plate spring can be achieved, the labor intensity of workers is relieved, the production efficiency is enhanced, the drilling quality is improved, and production safety is guaranteed.

Description

Steel leaf spring automatic drilling equipment and automatic drilling method
Technical field
The present invention relates to steel leaf spring boring field, particularly relate to a kind of steel leaf spring automatic drilling equipment and automatic drilling method.
Background technology
At present, manually-operated operating type is mainly taked in steel leaf spring boring, by craft, complete fully, due to Manual drilling equipment and steel leaf spring workpiece part weight, and output is large, make operator's labour intensity very big, production efficiency is extremely low, but also security incident easily occurs, the quality of boring also is difficult to guarantee.
Summary of the invention
The objective of the invention is in order to overcome the deficiency of above-mentioned background technology, a kind of steel leaf spring automatic drilling equipment and automatic drilling method are provided, can realize the automatic drilling of steel leaf spring, reduce operator's labour intensity, enhance productivity and drilling quality, ensure production safety.
Steel leaf spring automatic drilling equipment provided by the invention and automatic drilling method, comprise drilling machine, fixture, the roller-way support, horizontal material-pulling device, feeding roller table, the discharging roller-way, horizontal positioning device, longitudinal positioning device, drilling machine comprises drilling machine column, drilling machine base, slide unit, main shaft and drill bit, one side of drilling machine base is fixed with drilling machine column, opposite side is fixed with fixture, it is characterized in that: the top, side of described drilling machine column is fixed with slide unit, bottom is fixed with horizontal material-pulling device, slide unit comprises slide plate, the slide plate of slide unit is connected with main shaft, the lower end of main shaft is provided with drill bit, fixture comprises clamp base, on the longitudinal centre line of clamp base upper surface, is provided with horizontal positioning device, the drilling machine base top is crossed with the roller-way support, be provided with feeding roller table, discharging roller-way and longitudinal positioning device on the roller-way support, feeding roller table and discharging roller-way parallel arranged, be fixed with cylinder mount pad, the first lifting guide holder and the second lifting guide holder on clamp base, the cylinder mount pad comprises 2 columns and 1 erecting bed, erecting bed is across the top at 2 columns, the first lifting guide holder, the second lifting guide holder all are positioned at the inboard of erecting bed below, two root posts, are fixed with the first cylinder on erecting bed,
Described horizontal material-pulling device comprises the pusher of three parallel arranged, and each pusher comprises second cylinder, and the top of each the second cylinder is fixed with a scraping wings;
Described horizontal positioning device comprises the first servomotor, shaft coupling, the first ball wire bar pair, the first guide rail slide block pair and located lateral plate, the first servomotor is connected with an end of the first ball wire bar pair by shaft coupling, the other end of the first ball wire bar pair is fixed with the first guide rail slide block pair, the first guide rail slide block pair comprises the first guide rail and the first slide block, is fixed with the located lateral plate on the first slide block;
Described longitudinal positioning device comprises the second servomotor, the first rolling bearing units, the second guide rail slide block pair, locating support and the second ball wire bar pair, be provided with the second servomotor on the roller-way support, the first rolling bearing units, the second rolling bearing units, the second guide rail slide block pair and the 3rd guide rail slide block pair, the second servomotor is connected with the first rolling bearing units, the second ball wire bar pair comprises feed screw nut and ball screw, the two ends of ball screw are respectively through the first rolling bearing units, the second rolling bearing units, the second guide rail slide block pair comprises the second guide rail and the second slide block, the 3rd guide rail slide block pair comprises the 3rd guide rail and the 3rd slide block, the second guide rail and the 3rd guide rail all are fixed on the roller-way support, locating support is fixed on the second slide block, on the 3rd slide block, parallel stationary positioned baffle plate and the supporting plate of being provided with in the side of locating support, the stationary positioned baffle plate is positioned at directly over feeding roller table, supporting plate be positioned at the discharging roller-way directly over, the side of supporting plate is provided with the lifting positioning baffle, also be provided with the 3rd cylinder on locating support, the piston rod of the 3rd cylinder is fixedly connected with the lifting positioning baffle.
On the basis of technique scheme, described fixture also comprises drill jig, in the center line of drill jig and drilling machine, the center line of drill bit point-blank, drill jig comprises 2 fairleads, 2 fairleads are enclosed within respectively on the first lifting guide holder, the second lifting guide holder, the top of drill jig is fixedly connected with the piston rod of the first cylinder, and the bottom of drill jig is fixed with pressure strip, and the bottom of pressure strip is fixed with briquetting.
On the basis of technique scheme, described briquetting takes the shape of the letter U.
On the basis of technique scheme, the bottom of three scraping wings in described horizontal material-pulling device is all than the high 2~5mm of feeding roller table.
On the basis of technique scheme, the bottom of three scraping wings in described horizontal material-pulling device is all than the high 3~4mm of feeding roller table.
On the basis of technique scheme, the bottom of three scraping wings in described horizontal material-pulling device is all than the high 3.5mm of feeding roller table.
On the basis of technique scheme, plane, described located lateral plate place is than the high 2~5mm of discharging roller-way.
On the basis of technique scheme, plane, described located lateral plate place is than the high 3~4mm of discharging roller-way.
On the basis of technique scheme, plane, described located lateral plate place is than the high 3.5mm of discharging roller-way.
The present invention also provides a kind of steel leaf spring automatic drilling method based on above-mentioned steel leaf spring automatic drilling equipment, comprises the following steps:
S1, the steel leaf spring workpiece is placed into to the feed side of feeding roller table, feeding roller table is carried the steel leaf spring workpiece to the direction of drilling machine, be transported to the location, stationary positioned baffle plate place of longitudinal positioning device;
The second cylinder in three pushers in S2, horizontal material-pulling device is pneumatic, and three scraping wings push to the steel leaf spring workpiece location, located lateral baffle plate 7e place of horizontal positioning device;
The second cylinder in S3, horizontal material-pulling device in the pusher of both sides is regained, and the second cylinder in middle pusher keeps compressing; The first cylinder in fixture presses down, and compresses the steel leaf spring workpiece, the descending boring of the main shaft of drilling machine;
After S4, boring, the main shaft of drilling machine is up, leave the steel leaf spring workpiece, fixture is up, laterally the second cylinder in the pusher of the centre of material-pulling device is regained, decontrol the steel leaf spring workpiece, the lifting positioning baffle of longitudinal positioning device is up, and the steel leaf spring workpiece that the discharging roller-way will be holed complete is sent.
Compared with prior art, advantage of the present invention is as follows:
The present invention can realize the automatic drilling of steel leaf spring, reduces operator's labour intensity, enhances productivity and drilling quality, ensures production safety.
The accompanying drawing explanation
Fig. 1 is the side view of embodiment of the present invention light plate spring automatic drilling equipment;
Fig. 2 is the top view of embodiment of the present invention light plate spring automatic drilling equipment;
Fig. 3 is the structural representation of fixture in the embodiment of the present invention;
Fig. 4 is the structural representation of horizontal positioning device in the embodiment of the present invention;
Fig. 5 is the structural representation of longitudinal positioning device in the embodiment of the present invention.
Reference numeral: 1-drilling machine, the 2-fixture, 3-roller-way support, the horizontal material-pulling device of 4-, the 5-feeding roller table, 6-discharging roller-way, the 7-horizontal positioning device, the 8-longitudinal positioning device, the 1a-drilling machine column, the 1b-drilling machine base, the 1c-slide unit, the 1d-main shaft, the 1e-drill bit, 2a-the first cylinder, 2b-cylinder mount pad, the 2c-pressure strip, 2d-the first lifting guide holder, the 2e-drilling machine base, 2f-the second lifting guide holder, the 2g-drill jig, the 2h-briquetting, 4a-the second cylinder, the 4b-scraping wings, 7a-the first servomotor, the 7b-shaft coupling, 7c-the first ball wire bar pair, 7d-the first guide rail slide block pair, 7e-located lateral plate, 8a-the second servomotor, 8b-the first rolling bearing units, 8c-the second guide rail slide block pair, the 8d-locating support, the 8e-supporting plate, 8f-lifting positioning baffle, 8g-the second ball wire bar pair, 8h-the second rolling bearing units, 8i-the 3rd guide rail slide block pair, 8j-the 3rd cylinder, 8k-stationary positioned baffle plate.
The specific embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
Referring to Fig. 1, shown in Fig. 2, the embodiment of the present invention provides a kind of steel leaf spring automatic drilling equipment, comprise drilling machine 1, fixture 2, roller-way support 3, horizontal material-pulling device 4, feeding roller table 5, discharging roller-way 6, horizontal positioning device 7, longitudinal positioning device 8, drilling machine 1 comprises drilling machine column 1a, drilling machine base 1b, slide unit 1c, main shaft 1d and drill bit 1e, the side of drilling machine base 1b is fixed with drilling machine column 1a, opposite side is fixed with fixture 2, the top, side of drilling machine column 1a is fixed with slide unit 1c, bottom is fixed with horizontal material-pulling device 4, slide unit 1c comprises slide plate, the slide plate of slide unit 1c is connected with main shaft 1d, the lower end of main shaft 1d is provided with drill bit 1e, fixture 2 comprises clamp base 2e, is provided with horizontal positioning device 7 on the longitudinal centre line of clamp base 2e upper surface, drilling machine base 1b top is crossed with roller-way support 3, is provided with feeding roller table 5, discharging roller-way 6 and longitudinal positioning device 8 on roller-way support 3, feeding roller table 5 and discharging roller-way 6 parallel arranged.
Shown in Figure 3, be fixed with cylinder mount pad 2b, the first lifting guide holder 2d and the second lifting guide holder 2f on clamp base 2e, cylinder mount pad 2b comprises 2 columns and 1 erecting bed, erecting bed is across the top at 2 columns, the first lifting guide holder 2d, the second lifting guide holder 2f all are positioned at the survey of erecting bed below, two root posts, are fixed with the first cylinder 2a on erecting bed; Fixture 2 also comprises drill jig 2g, in the center line of drill jig 2g and drilling machine 1, the center line of drill bit 1e point-blank, drill jig 2g comprises 2 fairleads, 2 fairleads are enclosed within respectively on the first lifting guide holder 2d, the second lifting guide holder 2f, the top of drill jig 2g is fixedly connected with the piston rod of the first cylinder 2a, the bottom of drill jig 2g is fixed with pressure strip 2c, and the bottom of pressure strip 2c is fixed with the briquetting 2h of U-shaped.
Shown in Figure 2, laterally material-pulling device 4 comprises the pusher of three parallel arranged, and each pusher comprises second a cylinder 4a, and the top of each the second cylinder 4a is fixed with a scraping wings 4b.The bottom of three scraping wings 4b is all for example, than the high 2~5mm of feeding roller table 5: 3mm, 3.5mm, 4mm.
Shown in Figure 4, horizontal positioning device 7 comprises the first servomotor 7a, shaft coupling 7b, the first ball wire bar pair 7c, the first secondary 7d of guide rail slide block and located lateral plate 7e, the first servomotor 7a is connected with the end of the first ball wire bar pair 7c by shaft coupling 7b, the other end of the first ball wire bar pair 7c is fixed with the first secondary 7d of guide rail slide block, the first secondary 7d of guide rail slide block comprises the first guide rail and the first slide block, be fixed with located lateral plate 7e on the first slide block, plane, located lateral plate 7e place for example, than the high 2~5mm of discharging roller-way 6: 3mm, 3.5mm, 4mm.
Shown in Figure 5, longitudinal positioning device 8 comprises the second servomotor 8a, the first rolling bearing units 8b, the second secondary 8c of guide rail slide block, locating support 8d and the second ball wire bar pair 8g, be provided with the second servomotor 8a on roller-way support 3, the first rolling bearing units 8b, the second rolling bearing units 8h, the second secondary 8c of guide rail slide block and the 3rd secondary 8i of guide rail slide block, the second servomotor 8a is connected with the first rolling bearing units 8b, the second ball wire bar pair 8g comprises feed screw nut and ball screw, the two ends of ball screw are respectively through the first rolling bearing units 8b, the second rolling bearing units 8h, the second secondary 8c of guide rail slide block comprises the second guide rail and the second slide block, the 3rd secondary 8i of guide rail slide block comprises the 3rd guide rail and the 3rd slide block, the second guide rail and the 3rd guide rail all are fixed on roller-way support 3, locating support 8d is fixed on the second slide block, on the 3rd slide block, parallel stationary positioned baffle plate 8k and the supporting plate 8e of being provided with in the side of locating support 8d, stationary positioned baffle plate 8k is positioned at directly over feeding roller table 5, supporting plate 8e be positioned at discharging roller-way 6 directly over, the side of supporting plate 8e is provided with lifting positioning baffle 8f, also be provided with the 3rd cylinder 8j on locating support 8c, the piston rod of the 3rd cylinder 8j is fixedly connected with lifting positioning baffle 8f.
The operation principle of longitudinal positioning device 8 is as follows:
Stationary positioned baffle plate 8k is highly fixing, as first location, use, lifting positioning baffle 8f liftable folding under the driving of the 3rd cylinder 8j, when workpiece is carried, lifting positioning baffle 8f descends, workpiece is positioned, after machining, the 3rd cylinder 8j drives lifting positioning baffle 8f to rise, and material passes through from the bottom of lifting positioning baffle 8f; Locating support 8d in longitudinal positioning device 8 is driven by the second servomotor 8a and ball screw assembly, 8g, by the second secondary 8c of guide rail slide block and the 3rd secondary 8i of guide rail slide block, jointly led, the longitudinal register benchmark of stationary positioned baffle plate 8k and lifting positioning baffle 8f all can be adjusted according to the length of steel leaf spring workpiece, and then can realize the centre-drilling hole of different size steel leaf spring workpiece.
The embodiment of the present invention also provides a kind of steel leaf spring automatic drilling method based on above-mentioned steel leaf spring automatic drilling equipment, comprises the following steps:
S1, the steel leaf spring workpiece is placed into to the feed side of feeding roller table 5, feeding roller table 5 is carried the steel leaf spring workpiece to the direction of drilling machine 1, and locate at the stationary positioned baffle plate 8k place that is transported to longitudinal positioning device 8;
The second cylinder 4a in three pushers in S2, horizontal material-pulling device 4 is pneumatic, and three scraping wings 4b push to the steel leaf spring workpiece location, located lateral baffle plate 7e place of horizontal positioning device 7;
The second cylinder 4a in S3, horizontal material-pulling device 4 in the pusher of both sides regains, and the second cylinder 4a in middle pusher keeps compressing; The first cylinder 2a in fixture 2 presses down, and compresses the steel leaf spring workpiece, the descending boring of main shaft 1d of drilling machine 1;
After S4, boring, the main shaft 1d of drilling machine 1 is up, leave the steel leaf spring workpiece, fixture 2 is up, laterally the second cylinder 4a in the pusher of the centre of material-pulling device 4 regains, decontrol the steel leaf spring workpiece, the lifting positioning baffle 8f of longitudinal positioning device 8 is up, and the steel leaf spring workpiece that discharging roller-way 6 will be holed complete is sent.
Those skilled in the art can carry out various modifications and variations to the embodiment of the present invention, if these are revised and modification belongs within the scope of the claims in the present invention and equivalent technologies thereof, these modifications and modification are also within protection scope of the present invention.
The prior art that the content of not describing in detail in specification is known to the skilled person.

Claims (10)

1. a steel leaf spring automatic drilling equipment, comprise drilling machine (1), fixture (2), roller-way support (3), horizontal material-pulling device (4), feeding roller table (5), discharging roller-way (6), horizontal positioning device (7), longitudinal positioning device (8), drilling machine (1) comprises drilling machine column (1a), drilling machine base (1b), slide unit (1c), main shaft (1d) and drill bit (1e), one side of drilling machine base (1b) is fixed with drilling machine column (1a), opposite side is fixed with fixture (2), it is characterized in that: the top, side of described drilling machine column (1a) is fixed with slide unit (1c), bottom is fixed with horizontal material-pulling device (4), slide unit (1c) comprises slide plate, the slide plate of slide unit (1c) is connected with main shaft (1d), the lower end of main shaft (1d) is provided with drill bit (1e), fixture (2) comprises clamp base (2e), on the longitudinal centre line of clamp base (2e) upper surface, is provided with horizontal positioning device (7), drilling machine base (1b) top is crossed with roller-way support (3), be provided with feeding roller table (5) on roller-way support (3), discharging roller-way (6) and longitudinal positioning device (8), feeding roller table (5) and discharging roller-way (6) parallel arranged, be fixed with cylinder mount pad (2b) on clamp base (2e), the first lifting guide holder (2d) and the second lifting guide holder (2f), cylinder mount pad (2b) comprises 2 columns and 1 erecting bed, erecting bed is across the top at 2 columns, the first lifting guide holder (2d), the second lifting guide holder (2f) all is positioned at the erecting bed below, the inboard of two root posts, be fixed with the first cylinder (2a) on erecting bed,
Described horizontal material-pulling device (4) comprises the pusher of three parallel arranged, and each pusher comprises second cylinder (4a), and the top of each the second cylinder (4a) is fixed with a scraping wings (4b);
Described horizontal positioning device (7) comprises the first servomotor (7a), shaft coupling (7b), the first ball wire bar pair (7c), the first guide rail slide block secondary (7d) and located lateral plate (7e), the first servomotor (7a) is connected with an end of the first ball wire bar pair (7c) by shaft coupling (7b), the other end of the first ball wire bar pair (7c) is fixed with the first guide rail slide block secondary (7d), the first guide rail slide block secondary (7d) comprises the first guide rail and the first slide block, is fixed with located lateral plate (7e) on the first slide block;
Described longitudinal positioning device (8) comprises the second servomotor (8a), the first rolling bearing units (8b), the second guide rail slide block secondary (8c), locating support (8d) and the second ball wire bar pair (8g), be provided with the second servomotor (8a) on roller-way support (3), the first rolling bearing units (8b), the second rolling bearing units (8h), the second guide rail slide block secondary (8c) and the 3rd guide rail slide block secondary (8i), the second servomotor (8a) is connected with the first rolling bearing units (8b), the second ball wire bar pair (8g) comprises feed screw nut and ball screw, the two ends of ball screw are respectively through the first rolling bearing units (8b), the second rolling bearing units (8h), the second guide rail slide block secondary (8c) comprises the second guide rail and the second slide block, the 3rd guide rail slide block secondary (8i) comprises the 3rd guide rail and the 3rd slide block, the second guide rail and the 3rd guide rail all are fixed on roller-way support (3), locating support (8d) is fixed on the second slide block, on the 3rd slide block, parallel stationary positioned baffle plate (8k) and the supporting plate (8e) of being provided with in the side of locating support (8d), stationary positioned baffle plate (8k) is positioned at directly over feeding roller table (5), supporting plate (8e) be positioned at discharging roller-way (6) directly over, the side of supporting plate (8e) is provided with lifting positioning baffle (8f), also be provided with the 3rd cylinder (8j) on locating support (8d), the piston rod of the 3rd cylinder (8j) is fixedly connected with lifting positioning baffle (8f).
2. steel leaf spring automatic drilling equipment as claimed in claim 1, it is characterized in that: described fixture (2) also comprises drill jig (2g), in the center line of drill jig (2g) and drilling machine (1), the center line of drill bit (1e) point-blank, drill jig (2g) comprises 2 fairleads, 2 fairleads are enclosed within respectively the first lifting guide holder (2d), on the second lifting guide holder (2f), the top of drill jig (2g) is fixedly connected with the piston rod of the first cylinder (2a), the bottom of drill jig (2g) is fixed with pressure strip (2c), the bottom of pressure strip (2c) is fixed with briquetting (2h).
3. steel leaf spring automatic drilling equipment as claimed in claim 1, it is characterized in that: described briquetting (2h) takes the shape of the letter U.
4. steel leaf spring automatic drilling equipment as claimed in claim 1, it is characterized in that: the bottom of three scraping wings (4b) in described horizontal material-pulling device (4) is all than the high 2~5mm of feeding roller table (5).
5. steel leaf spring automatic drilling equipment as claimed in claim 4, it is characterized in that: the bottom of three scraping wings (4b) in described horizontal material-pulling device (4) is all than the high 3~4mm of feeding roller table (5).
6. steel leaf spring automatic drilling equipment as claimed in claim 5, it is characterized in that: the bottom of three scraping wings (4b) in described horizontal material-pulling device (4) is all than the high 3.5mm of feeding roller table (5).
7. steel leaf spring automatic drilling equipment as claimed in claim 1, it is characterized in that: described located lateral plate (7e) plane, place is than the high 2~5mm of discharging roller-way (6).
8. steel leaf spring automatic drilling equipment as claimed in claim 7, it is characterized in that: described located lateral plate (7e) plane, place is than the high 3~4mm of discharging roller-way (6).
9. steel leaf spring automatic drilling equipment as claimed in claim 8, it is characterized in that: described located lateral plate (7e) plane, place is than the high 3.5mm of discharging roller-way (6).
10. the steel leaf spring automatic drilling method based on the described steel leaf spring automatic drilling equipment of any one in claim 1 to 9, is characterized in that, comprises the following steps:
S1, the steel leaf spring workpiece is placed into to the feed side of feeding roller table (5), feeding roller table (5) is carried the steel leaf spring workpiece to the direction of drilling machine (1), and the stationary positioned baffle plate (8k) that is transported to longitudinal positioning device (8) is located location;
The second cylinder (4a) in three pushers in S2, horizontal material-pulling device (4) is pneumatic, and three scraping wings (4b) push to the steel leaf spring workpiece location, located lateral baffle plate 7e place of horizontal positioning device (7);
The second cylinder (4a) in S3, horizontal material-pulling device (4) in the pusher of both sides is regained, and the second cylinder (4a) in middle pusher keeps compression; The first cylinder (2a) in fixture (2) presses down, and compresses the steel leaf spring workpiece, the descending boring of main shaft (1d) of drilling machine (1);
After S4, boring, the main shaft (1d) of drilling machine (1) is up, leave the steel leaf spring workpiece, fixture (2) is up, laterally the second cylinder (4a) in the pusher of the centre of material-pulling device (4) is regained, decontrol the steel leaf spring workpiece, the lifting positioning baffle (8f) of longitudinal positioning device (8) is up, and the steel leaf spring workpiece that discharging roller-way (6) will be holed complete is sent.
CN201310379205.0A 2013-08-27 2013-08-27 Steel plate spring automatic drilling equipment and automatic drilling method CN103433522B (en)

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Application Number Priority Date Filing Date Title
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CN103433522B CN103433522B (en) 2015-07-15

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CN104942337A (en) * 2015-06-30 2015-09-30 山东森德数控机械有限公司 Drilling machine production device used for machining leaf spring central hole and leaf spring central hole production line
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CN106078270A (en) * 2016-08-02 2016-11-09 无锡尊宝电动车有限公司 A kind of electrical accessorie processing boring machine
CN107363288A (en) * 2017-08-30 2017-11-21 韩朝锋 A kind of automatic drilling machine
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CN104942337A (en) * 2015-06-30 2015-09-30 山东森德数控机械有限公司 Drilling machine production device used for machining leaf spring central hole and leaf spring central hole production line
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CN107363288A (en) * 2017-08-30 2017-11-21 韩朝锋 A kind of automatic drilling machine
CN107363288B (en) * 2017-08-30 2019-05-17 江门顺鸿装备制造有限公司 A kind of automatic drilling machine
CN107983991A (en) * 2017-12-06 2018-05-04 天津工业大学 A kind of aramid fiber strengthens composite material drill unit

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