WO1980002522A1 - Feed device for a horizontal machine for drilling deep holes - Google Patents

Feed device for a horizontal machine for drilling deep holes Download PDF

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Publication number
WO1980002522A1
WO1980002522A1 PCT/DE1980/000063 DE8000063W WO8002522A1 WO 1980002522 A1 WO1980002522 A1 WO 1980002522A1 DE 8000063 W DE8000063 W DE 8000063W WO 8002522 A1 WO8002522 A1 WO 8002522A1
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WO
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Prior art keywords
carriage
drilling
guide
auxiliary
bed
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PCT/DE1980/000063
Other languages
German (de)
French (fr)
Inventor
F Mim
Original Assignee
Boehringer Gmbh Geb
F Mim
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Filing date
Publication date
Application filed by Boehringer Gmbh Geb, F Mim filed Critical Boehringer Gmbh Geb
Publication of WO1980002522A1 publication Critical patent/WO1980002522A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/72—Auxiliary arrangements; Interconnections between auxiliary tables and movable machine elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
    • B23B41/02—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor for boring deep holes; Trepanning, e.g. of gun or rifle barrels

Definitions

  • the invention relates to a feed device of the type specified in the preamble of claim 1.
  • the guide carriage which is advanced by this feed device and supports the end of the workpiece, supplies the workpiece bore with drilling oil which flows between the inner wall of the bore and the shaft of the drill into the borehole to the cutting edges of the drill flows, the chips are washed away and flows through the hollow drill to the drilling slide and is discharged there.
  • the guide carriage In order to prevent a leak occurring in the workpiece between the guide carriage and the mouth of the borehole through which drilling oil is lost, the guide carriage must be pressed against the end of the workpiece. So that this pressing force does not deform the workpiece, it must be dimensioned precisely. So far, it has been common to drive the slide with its own feed motor.
  • the feed gear which is driven by this motor and is arranged on the guide carriage, and which has to produce a feed force which is to be measured precisely, is quite complicated.
  • the invention has for its object to simplify the guide carriage by eliminating this feed motor with gear.
  • Fig. 2 is a vertical middle longitudinal section through the three carriages shown on the right in Fig. 1, and
  • FIG. 3 shows a slide designed on a larger scale along the line 3-3 of FIG. 1.
  • the horizontal deep drilling machine shown in FIG. 1 carries on its bed 10 a headstock 12 which is provided with a drive motor 14 and which rotates the workpiece, not shown, about the spindle axis.
  • Spindle 12 carried chuck 16 is clamped, is supported at its other end on a mouthpiece 18 which is rotatably mounted about the spindle axis in a guide carriage 20 and is supplied with drilling oil from a drilling oil assembly 22. This is introduced through the mouthpiece 18 into the borehole of the workpiece and flows there into a space between the inner wall of the borehole and the drill up to its cutting head, in order to cool the cutting edges there and to wash away the chips.
  • the drilling oil then does not flow through the one in FIG. 1 Hollow drill shown to the drill carriage 25 carrying this drill. Between its ends, the workpiece can be supported by a roller setting stick 27. This and the slide 20 and 25 slide on the horizontal guideway of the bed 10. The drilling slide 25 is driven by its own feed motor with gear.
  • the feed of the guide carriage 20 must be designed in such a way that it can press the mouthpiece 18 against the workpiece with a certain force which is sufficient to bring about a reliable seal, but which must not be so large that it causes a harmful deformation of the workpiece .
  • the guide carriage 20 is advanced until it rests against the end of the workpiece and then stopped, while the drill carriage 25 carrying the drill advances driven by its feed motor and drives the drill into the workpiece.
  • the guide carriage 20 can be driven by a resilient linkage which couples it to the drilling carriage 25 and is shown in FIG. 2.
  • this resilient linkage consists of a horizontal push rod 28 arranged in the vertical longitudinal center plane of the bed, which is displaceably guided in the drilling carriage 25 and coupled to it by a spring.
  • the drilling carriage 25 has three transverse ribs 30, 32 and 34 on its underside, which are provided with coaxial bores.
  • the rod 28 is guided with a sliding fit in these bores. It carries between the ribs 30 and 32 a collar 36 rigidly attached to it, on which helical compression springs 37 and 38 are supported. These surround the rod 28 and are supported with their facing away from each other Ends at the ribs 30 and 32.
  • An auxiliary slide 40 is guided on the bed between the drilling slide 25 and the guide slide 20 and is connected to the guide slide 20 by a spring 42.
  • This auxiliary slide 40 can optionally be clamped to the bed 10 or to the linkage 28 carried by the drilling slide 25.
  • the carriage 40 namely carries on its underside clamping plates 44 which are supported on the one hand on the carriage 40 and on the other hand each on a shoulder 46 of the bed 10 and are carried by vertical bolts 48. These bolts are guided in vertical bores of the carriage 40 with clearance and their heads are supported on spring assemblies 50 which are arranged in the enlarged upper ends of the bores and have a prestress by which the clamping plates 44 are pressed against the shoulders 46 of the bed and thereby clamp the auxiliary carriage 40.
  • each clamping plate 44 there is a cylinder bore open at the bottom in the carriage 40 for receiving a hydraulic piston 52 which is supported on the clamping plate 44 at the top. If a hydraulic pressure medium is supplied to this cylinder bore by a hydraulic control (not shown in any more detail), then the piston 52 is pressed down and pivots the plate 44 located beneath it such that it is lifted off the shoulder 46 of the bed.
  • the auxiliary carriage 40 has in its vertical central longitudinal plane a bore for guiding the rod 28 and carries clamping jaws, not shown, which are pressed against the rod 28 by spring force, but can be released by hydraulic pressure with the aid of the control mentioned.
  • the mode of operation is as follows: If the workpiece is clamped in the chuck 16 and precisely aligned between its ends by a roller setting block 27, while the drilling carriage 25 and the auxiliary carriage 40 with the carriage 20 are withdrawn to the right, then the drilling carriage 25 is left with the on it advance the fastened drill towards the workpiece. He takes the rod 28 with the spring 37, which is clamped to the auxiliary carriage 40 during this advance. Therefore, the auxiliary carriage 40 is also carried along by the drilling carriage. He in turn takes the guide carriage 20 by means of the spring 42 until its mouthpiece 18 hits the workpiece. As a result, the guide carriage 20 is then brought to a standstill while the two carriages 25 and 40 initially advance further by compressing the springs 37 and 42.
  • a measuring mechanism (not shown in more detail) is now provided, which measures this distance and, when a certain minimum dimension is reached, that is to say when the contact force increases to a certain size, the hydraulic control starts and causes at the same time to release the clamp provided on the auxiliary slide 40 for the rod 28 and to relieve the hydraulic pistons 52 of the liquid pressure. At this time, the auxiliary carriage 40 is therefore detached from the rod 28 and clamped on the bed 10 at the same time. If the release of the clamping jaws from the rod 28 is delayed, then the rod 28 is temporarily held thereby, but the feed of the carriage 25 is not disturbed because the spring 37 is further compressed.
  • the force with which the. Guide carriage 20 presses the mouthpiece 18 against the workpiece grows with increasing bias of the spring 42.
  • this bias depends on how much time between the impact. fen of the mouthpiece 18 on the workpiece and the clamping of the auxiliary carriage 40 on the bed 10 passes. You can therefore choose this preload and with it the contact pressure in advance.
  • the described embodiment can be modified in many ways. So there is the possibility of rigidly attaching the rod 28 to the carriage 40 and replacing the collar 36 by a ring which can be displaced on the rod 28 and which can be coupled to the rod 28 by a controlled clamp.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)

Abstract

The guiding carriage (20) comprising a cutting oil supply pipe is driven by the feed device until it comes to a standstill against the face of the workpiece opposite to the puppet head (12) while the bit-holder carriage (25) travels by means of the feed motor. During such feed motion of the carriage (25), the latter is connected to the guiding carriage (20) through an elastic connection (28) which drives the guiding carriage (20) until it comes into contact with the workpiece and stops there. At rest, the guiding carriage (20) is coupled, through a spring (42), to an auxiliary carriage (40) which is arranged sliding on the frame between the two carriages (20, 25). This auxiliary carriage (40) may be locked as desired either on the frame or on the elastic connection (28).

Description

Vorschubeinrichtung für eine Horizontaltiefbohrmaschine Feed device for a horizontal deep drilling machine
Die Erfindung betrifft eine Vorschubeinrichtung, der im Oberbegriff des Anspruchs 1 angegebenen Art. Der durch diese Vorschubeinrichtung vorgeschobene Führungsschlitten, der das Werkstückende abstützt, führt der Werkstückbohrung Bohröl zu, das zwischen der Innenwandung der Bohrung und dem Schaft des Bohrers ins Bohrloch hinein zu den Schneiden des Bohrers fließt, dort die Späne wegspült und durch den hohlen Bohrer hindurch zum Bohrschlitten fließt und dort abgeleitet wird. Um zu verhindern, daß dabei zwischen dem Führungsschlitten und der Mündung des Bohrloches im Werkstück ein Leck entsteht, durch das Bohröl verloren geht, muß der Führungsschlitten an das Werkstückende angepreßt werden. Damit diese Preßkraft aber das Werkstück nicht verformt, muß sie genau bemessen werden. Bisher war es nun üblich, den Führungsschlitten durch einen eigenen Vorschubmotor anzutreiben. Das durch diesen Motor angetriebene, am Führungsschlitten angeordnete Vorschubgetriebe, das eine genau zu bemessende Vorschubkraft erzeugen muß, ist aber recht verwickelt. Der Erfindung liegt die Aufgabe zugrunde, den Führungsschlitten durch Fortfall dieses Vorschubmotors mit Getriebe zu vereinfachen.The invention relates to a feed device of the type specified in the preamble of claim 1. The guide carriage, which is advanced by this feed device and supports the end of the workpiece, supplies the workpiece bore with drilling oil which flows between the inner wall of the bore and the shaft of the drill into the borehole to the cutting edges of the drill flows, the chips are washed away and flows through the hollow drill to the drilling slide and is discharged there. In order to prevent a leak occurring in the workpiece between the guide carriage and the mouth of the borehole through which drilling oil is lost, the guide carriage must be pressed against the end of the workpiece. So that this pressing force does not deform the workpiece, it must be dimensioned precisely. So far, it has been common to drive the slide with its own feed motor. The feed gear, which is driven by this motor and is arranged on the guide carriage, and which has to produce a feed force which is to be measured precisely, is quite complicated. The invention has for its object to simplify the guide carriage by eliminating this feed motor with gear.
Diese Aufgabe ist durch die im kennzeichnenden Teil des Anspruchs 1 angegebene Ausgestaltung der Maschine gelöst. Dank dieser Ausgestaltung entfällt ein besonderes durch einen eigenen Motor angetriebenes Vorschub getriebe am Führungsschlitten . Dieser wird nämlich durch den Bohrschlitten mitgenommen und in die Lage gebracht, in der er abdichtend am Werkstück anliegt.This object is achieved by the embodiment of the machine specified in the characterizing part of claim 1. Thanks to this design, a special feed driven by its own motor is not required gear on the slide. This is namely carried along by the drill carriage and brought into the position in which it lies sealingly against the workpiece.
Zweckmäßige Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Appropriate embodiments of the invention are specified in the subclaims.
In den Zeichnungen, in denen ein bevorzugtes Ausführungsbeispiel der Erfindung veranschaulicht ist, zeigen,In the drawings, in which a preferred embodiment of the invention is illustrated,
Fig. 1 eine Horizontaltiefbohrmaschine, auf die die Erfindung anwendbar ist,1 is a horizontal deep drilling machine to which the invention is applicable,
Fig. 2 einen lotrechten mittleren Längsschnitt durch die drei Schlitten, die in Fig. 1 rechts gezeigt sind, undFig. 2 is a vertical middle longitudinal section through the three carriages shown on the right in Fig. 1, and
Fig. 3 einen im größeren Maßstab ausgeführten Schlitten nach der Linie 3-3 der Fig. 1.3 shows a slide designed on a larger scale along the line 3-3 of FIG. 1.
Die in Fig. 1 gezeigte Horizontaltiefbohrmaschine trägt auf ihrem Bett 10 einen Spindelkasten 12, der mit einem Antriebsmotor 14 versehen ist und das nicht dargestellte Werkstück um die Spindelachse in Umlauf versetzt. Das Werkstück, das mit seinem einen Ende in ein von der. Spindel 12 getragenes Futter 16 eingespannt ist, ist mit seinem anderen Ende an einem Mundstück 18 abgestützt, das um die Spindelachse drehbar in einem Führungsschlitten 20 gelagert ist und von einem Bohrölaggregat 22 aus mit Bohröl beliefert wird. Dieses wird durch das Mundstück 18 in das Bohrloch des Werkstücks eingeleitet und fließt dort in einen Zwischenraum zwischen der Innenwandung des Bohrlochs und dem Bohrer bis zu dessen Schneidenkopf, um dort die Schneiden zu kühlen und die Späne fortzuspülen. Mit diesen Spänen fließt dann das Bohröl durch den in Fig. 1 nicht dargestellten hohlen Bohrer zu dem diesen Bohrer tragenden Bohrschlitten 25. Zwischen seinen Enden kann das Werkstück durch einen Rollensetzstock 27 abgestützt werden. Dieser und die Schlitten 20 und 25 gleiten auf der waagerechten Führungsbahn des Bettes 10. Der Bohrschlitten 25 erfährt seinen Antrieb durch einen eigenen Vorschubmotor mit Getriebe.The horizontal deep drilling machine shown in FIG. 1 carries on its bed 10 a headstock 12 which is provided with a drive motor 14 and which rotates the workpiece, not shown, about the spindle axis. The workpiece that has one end in one of the. Spindle 12 carried chuck 16 is clamped, is supported at its other end on a mouthpiece 18 which is rotatably mounted about the spindle axis in a guide carriage 20 and is supplied with drilling oil from a drilling oil assembly 22. This is introduced through the mouthpiece 18 into the borehole of the workpiece and flows there into a space between the inner wall of the borehole and the drill up to its cutting head, in order to cool the cutting edges there and to wash away the chips. With these chips, the drilling oil then does not flow through the one in FIG. 1 Hollow drill shown to the drill carriage 25 carrying this drill. Between its ends, the workpiece can be supported by a roller setting stick 27. This and the slide 20 and 25 slide on the horizontal guideway of the bed 10. The drilling slide 25 is driven by its own feed motor with gear.
Der Vorschub des Führungsschlittens 20 muß so ausgestaltet sein, daß er das Mundstück 18 an das Werkstück mit einer bestimmten Kraft anzupressen vermag, die ausreicht, um eine zuverlässige Abdichtung herbeizuführen, aber nicht so groß bemessen werden darf, daß sie eine schädliche Verformung des Werkstücks herbeiführt. Zu diesem Zweck wird der Führungsschlitten 20 bis zur Anlage an dem Werkstückende vorgeschoben und dann stillgesetzt, während der den Bohrer tragende Bohrschlitten 25 durch seinen Vorschubmotor angetrieben vorläuft und den Bohrer in das Werkstück hinein vortreibt. Statt nun, wie bisher üblich, den Führungsschütten 20 ebenfalls mittels eines eigenen Vorschubmotors mit Getriebe anzutreiben, ist der Führungsschlitten 20 durch ein federndes Gestänge antreibbar, das ihn mit dem Bohrschlitten 25 kuppelt und in Fig. 2 dargestellt ist. Bei dem hier gezeigten Ausführungsbeispiel besteht dieses federnde Gestänge aus einer in der lotrechten Längsmittelebene des Bettes angeordneten waagerechten Schubstange 28, die im Bohrschlitten 25 verschiebbar geführt und mit ihm durch eine Feder gekuppelt ist. Der Bohrschlitten 25 hat nämlich auf seiner Unterseite drei Querrippen 30, 32 und 34, die mit gleichachsigen Bohrungen versehen sind. In diesen Bohrungen ist die Stange 28 mit Gleitsitz geführt. Sie trägt zwischen den Rippen 30 und 32 einen starr an ihr befestigten Bund 36, an welchem sich Schraubendruckfedern 37 und 38 abstützen. Diese umgeben die Stange 28 und stützen sich mit ihren voneinander abgewandten Enden an den Rippen 30 und 32 ab.The feed of the guide carriage 20 must be designed in such a way that it can press the mouthpiece 18 against the workpiece with a certain force which is sufficient to bring about a reliable seal, but which must not be so large that it causes a harmful deformation of the workpiece . For this purpose, the guide carriage 20 is advanced until it rests against the end of the workpiece and then stopped, while the drill carriage 25 carrying the drill advances driven by its feed motor and drives the drill into the workpiece. Instead of driving the guide chutes 20 by means of their own feed motor with a gear, as was previously the case, the guide carriage 20 can be driven by a resilient linkage which couples it to the drilling carriage 25 and is shown in FIG. 2. In the embodiment shown here, this resilient linkage consists of a horizontal push rod 28 arranged in the vertical longitudinal center plane of the bed, which is displaceably guided in the drilling carriage 25 and coupled to it by a spring. The drilling carriage 25 has three transverse ribs 30, 32 and 34 on its underside, which are provided with coaxial bores. The rod 28 is guided with a sliding fit in these bores. It carries between the ribs 30 and 32 a collar 36 rigidly attached to it, on which helical compression springs 37 and 38 are supported. These surround the rod 28 and are supported with their facing away from each other Ends at the ribs 30 and 32.
Zwischen dem Bohrschlitten 25 und dem Führungsschlitten 20 ist auf dem Bett ein Hilfsschlitten 40 geführt, der mit dem Führungsschlitten 20 durch eine Feder 42 verbunden ist. Dieser Hilfsschlitten 40 kann wahlweise an dem Bett 10 oder an dem vom Bohrschlitten 25 mitgeführten Gestänge 28 angeklemmt werden. Der Schlitten 40 trägt nämlich auf seiner Unterseite Klemmplatten 44, die sich einerseits am Schlitten 40 und andererseits je an einer Schulter 46 des Bettes 10 abstützen und von lotrechten Bolzen 48 getragen werden. Diese Bolzen sind in lotrechten Bohrungen des Schlitten 40 mit Spielraum geführt und ihre Köpfe stützen sich auf Federpaketen 50 ab, die in den erweiterten oberen Enden der Bohrungen angeordnet sind und eine Vorspannung besitzen, durch welche die Klemmplatten 44 an die Schultern 46 des Bettes angepreßt werden und dadurch den Hilfsschlitten 40 festklemmen. Zwischen den Bolzen 48 einer jeden Klemmplatte 44 befindet sich jedoch im Schlitten 40 eine unten offene Zylinderbohrung zur Aufnahme eines hydraulischen Kolbens 52, der sich oben auf der Klemmplatte 44 abstützt. Wird dieser Zylinderbohrung durch eine nicht näher dargestellte hydraulische Steuerung ein hydraulisches Druckmittel zugeführt, dann wird dadurch der Kolben 52 herabgedrückt und verschwenkt die unter ihm befindliche Platte 44 derart, daß diese von der Schulter 46 des Bettes abgehoben wird.An auxiliary slide 40 is guided on the bed between the drilling slide 25 and the guide slide 20 and is connected to the guide slide 20 by a spring 42. This auxiliary slide 40 can optionally be clamped to the bed 10 or to the linkage 28 carried by the drilling slide 25. The carriage 40 namely carries on its underside clamping plates 44 which are supported on the one hand on the carriage 40 and on the other hand each on a shoulder 46 of the bed 10 and are carried by vertical bolts 48. These bolts are guided in vertical bores of the carriage 40 with clearance and their heads are supported on spring assemblies 50 which are arranged in the enlarged upper ends of the bores and have a prestress by which the clamping plates 44 are pressed against the shoulders 46 of the bed and thereby clamp the auxiliary carriage 40. Between the bolts 48 of each clamping plate 44, however, there is a cylinder bore open at the bottom in the carriage 40 for receiving a hydraulic piston 52 which is supported on the clamping plate 44 at the top. If a hydraulic pressure medium is supplied to this cylinder bore by a hydraulic control (not shown in any more detail), then the piston 52 is pressed down and pivots the plate 44 located beneath it such that it is lifted off the shoulder 46 of the bed.
Der Hilfsschlitten 40 hat in seiner lotrechten Mittellängsebene eine Bohrung zur Führung der Stange 28 und trägt nicht näher dargestellte Klemmbacken, die durch Federkraft an die Stange 28 angepreßt werden, aber durch hydraulischen Druck mit Hilfe der erwähnten Steuerung gelöst werden können.The auxiliary carriage 40 has in its vertical central longitudinal plane a bore for guiding the rod 28 and carries clamping jaws, not shown, which are pressed against the rod 28 by spring force, but can be released by hydraulic pressure with the aid of the control mentioned.
Auf diese Weise vermag die beschriebene hydraulische Steuerung den Hilfsschlitten 40 wahlweise entweder an dem Bett 10 oder an der vom Bohrschlitten 25 mitgeführten Stange 28 anzuklemmen.In this way, the hydraulic described Control to clamp the auxiliary carriage 40 either on the bed 10 or on the rod 28 carried by the drilling carriage 25.
Die Wirkungsweise ist folgende: Ist das Werkstück in das Futter 16 eingespannt und zwischen seinen Enden durch einen Rollensetzstock 27 genau ausgerichtet, während der Bohrschlitten 25 und der Hilfsschlitten 40 mit Führungsschlitten 20 nach rechts zurückgezogen sind, dann läßt man den Bohrschlitten 25 mit dem an ihm befestigten Bohrer in Richtung auf Werkstück vorlaufen. Er nimmt dabei mittels der Feder 37 die Stange 28 mit, die während dieses Vorlaufs am Hilfsschlitten 40 festgeklemmt ist. Daher wird auch der Hilfsschlitten 40 vom Bohrschlitten mitgenommen. Er nimmt seinerseits mittels der Feder 42 den Führungsschlitten 20 mit, bis dessen Mundstück 18 auf das Werkstück trifft. Dadurch wird dann der Führungsschlitten 20 zum Stillstand gebracht, während zunächst die beiden Schlitten 25 und 40 unter Zusammendrücken der Federn 37 und 42 weiter vorlaufen. Durch Zusammendrücken der Feder 42 wächst die Kraft, mit der das Mundstück 18 an das Werkstück angepreßt wird. Umgekehrt verhältnisgleich zu dieser Kraft verringert sich der Abstand zwischen den Schlitten 20 und 40. Es ist nun ein nicht näher dargestelltes Meßwerk vorgesehen, das diesen Abstand mißt und bei Erreichen eines bestimmten Mindestmaßes, also bei Anstieg der Anpreßkraft auf eine bestimmte Größe, die hydraulische Steuerung in Gang setzt und veranlaßt, gleichzeitig die auf dem Hilfsschlitten 40 vorgesehene Klemme für die Stange 28 zu lösen und die hydraulischen Kolben 52 vom Flüssigkeitsdruck zu entlasten. Zu diesem Zeitpunkt wird daher der Hilfsschlitten 40 von der Stange 28 gelöst und gleichzeitig am Bett 10 angeklemmt. Sollte sich das Lösen der Klemmbacken von der Stange 28 verzögern, dann wird dadurch zwar die Stange 28 vorübergehend festgehalten, der Vorschub des Schlittens 25 aber nicht gestört, weil die Feder 37 dabei weiter zusammengedrückt wird.The mode of operation is as follows: If the workpiece is clamped in the chuck 16 and precisely aligned between its ends by a roller setting block 27, while the drilling carriage 25 and the auxiliary carriage 40 with the carriage 20 are withdrawn to the right, then the drilling carriage 25 is left with the on it advance the fastened drill towards the workpiece. He takes the rod 28 with the spring 37, which is clamped to the auxiliary carriage 40 during this advance. Therefore, the auxiliary carriage 40 is also carried along by the drilling carriage. He in turn takes the guide carriage 20 by means of the spring 42 until its mouthpiece 18 hits the workpiece. As a result, the guide carriage 20 is then brought to a standstill while the two carriages 25 and 40 initially advance further by compressing the springs 37 and 42. By compressing the spring 42, the force with which the mouthpiece 18 is pressed against the workpiece increases. Conversely, in proportion to this force, the distance between the carriages 20 and 40 is reduced. A measuring mechanism (not shown in more detail) is now provided, which measures this distance and, when a certain minimum dimension is reached, that is to say when the contact force increases to a certain size, the hydraulic control starts and causes at the same time to release the clamp provided on the auxiliary slide 40 for the rod 28 and to relieve the hydraulic pistons 52 of the liquid pressure. At this time, the auxiliary carriage 40 is therefore detached from the rod 28 and clamped on the bed 10 at the same time. If the release of the clamping jaws from the rod 28 is delayed, then the rod 28 is temporarily held thereby, but the feed of the carriage 25 is not disturbed because the spring 37 is further compressed.
Die Kraft, mit welcher der. Führungsschlitten 20 das Mundstück 18 an das Werkstück anpreßt, wächst mit zunehmender Vorspannung der Feder 42. Diese Vorspannung aber hängt davon ab, wieviel Zeit zwischen dem Auftref-. fen des Mundstückes 18 auf das Werkstück und dem Festspannen des Hilfsschlittens 40 am Bett 10 verstreicht. Man kann daher diese Vorspannung und mit ihr die Anpreßkraft im voraus wählen.The force with which the. Guide carriage 20 presses the mouthpiece 18 against the workpiece, grows with increasing bias of the spring 42. However, this bias depends on how much time between the impact. fen of the mouthpiece 18 on the workpiece and the clamping of the auxiliary carriage 40 on the bed 10 passes. You can therefore choose this preload and with it the contact pressure in advance.
Das beschriebene Ausführungsbeispiel läßt sich in mannigfacher Hinsicht abwandeln. So besteht die Möglichkeit, die Stange 28 am Schlitten 40 starr zu befestigen und den Bund 36 durch einen auf der Stange 28 verschiebbaren Ring zu ersetzen, der durch eine gesteuerte Klemme mit der Stange 28 gekuppelt werden kann. The described embodiment can be modified in many ways. So there is the possibility of rigidly attaching the rod 28 to the carriage 40 and replacing the collar 36 by a ring which can be displaced on the rod 28 and which can be coupled to the rod 28 by a controlled clamp.

Claims

PATENTANSPRÜCHE PATENT CLAIMS
1. Vorschubeinrichtung für den mit Bohrölzuführung versehenen Führungsschlitten einer Horizontaltiefbohrmaschine, der bis zur Anlage an dem vom Spindelkasten abgewandten Ende des Werkstücks vorgeschoben und dann stillgesetzt wird, während der den Bohrer tragende Bohrschlitten durch einen Vorschubmotor angetrieben vorläuft, d a d u r c h g e k e n n z e i c h n et, daß der Führungsschlitten (20) durch ein Gestänge (28, 37) antreibbar ist, das ihn mit dem Bohrschlitten (25) kuppelt.1. Feeding device for the guide carriage of a horizontal deep drilling machine provided with drilling oil feed, which is advanced until it comes to rest on the end of the workpiece facing away from the headstock and is then stopped, while the drill carriage carrying the drill is driven by a feed motor, characterized in that the guide carriage (20 ) can be driven by a linkage (28, 37) which couples it to the drilling carriage (25).
2. Einrichtung nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß zwischen dem Bohrschlitten (25) und dem Führungsschlitten (20) auf dem Bett (10) ein Hilfsschlitten (40) geführt ist, der mit dem Führungsschlitten (20) durch eine Feder (42) verbunden ist und wahlweise an dem Bett (10) oder an dem vom Bohrschlitten (25) mitgeführten Gestänge (28) anklemmbar ist.2. Device according to claim 1, characterized in that between the drilling carriage (25) and the guide carriage (20) on the bed (10) an auxiliary carriage (40) is guided, which is connected to the guide carriage (20) by a spring (42) and can optionally be clamped to the bed (10) or to the linkage (28) carried by the drilling carriage (25).
3. Einrichtung nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t , daß das federnde Gestänge aus einer Schubstange (28) besteht, die im Bohrschlitten (25) verschiebbar geführt und mit ihm durch eine Feder (37) gekuppelt ist..3. Device according to claim 1 or 2, so that the resilient linkage consists of a push rod (28) which is displaceably guided in the drilling carriage (25) and coupled to it by a spring (37).
4. Einrichtung nach Anspruch 2 oder 3, d a d u r c h g e k e n n z e i c h n e t , daß für das wahlweise Anklemmen eine hydraulische Steuerung vorgesehen ist, die durch ein die relative Verschiebung des Hilfsschlittens (40) zum Führungsschlitten (20) abfühlendes Meßwerk während des Vorlaufs des Hilfsschlittens (40) veranlaßt wird, den Hilfsschlitten (40) von dem Gestänge (28) zu lösen und gleichzeitig am Bett (10) festzuklemmen. 4. Device according to claim 2 or 3, characterized in that a hydraulic control is provided for the optional clamping, which is caused by a relative displacement of the auxiliary slide (40) to the guide slide (20) sensing measuring mechanism during the advance of the auxiliary slide (40) , the auxiliary slide (40) to detach from the linkage (28) and at the same time clamp it to the bed (10).
PCT/DE1980/000063 1979-05-14 1980-05-12 Feed device for a horizontal machine for drilling deep holes WO1980002522A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2919376 1979-05-14
DE2919376A DE2919376B2 (en) 1979-05-14 1979-05-14 Feed device for the guide carriage of a horizontal deep drilling machine, which is provided with drilling oil supply

Publications (1)

Publication Number Publication Date
WO1980002522A1 true WO1980002522A1 (en) 1980-11-27

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Application Number Title Priority Date Filing Date
PCT/DE1980/000063 WO1980002522A1 (en) 1979-05-14 1980-05-12 Feed device for a horizontal machine for drilling deep holes

Country Status (4)

Country Link
JP (1) JPS5837084B2 (en)
DE (1) DE2919376B2 (en)
IT (1) IT1131490B (en)
WO (1) WO1980002522A1 (en)

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JPH0791868A (en) * 1993-09-24 1995-04-07 Sanden Corp Heat exchanger
JP6466232B2 (en) * 2015-04-10 2019-02-06 東芝機械株式会社 BTA deep hole processing machine
CN105710396A (en) * 2016-01-21 2016-06-29 宁夏新瑞长城机床有限公司 Locking device for programmable moving parts of machine tool
CN109746481A (en) * 2017-11-07 2019-05-14 北京实验工厂 A kind of long deep hole drilling apparatus of piston rod high-precision and processing method
CN110052869B (en) * 2019-06-06 2020-05-29 重庆宏钢数控机床有限公司 Sliding type clamping assembly

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DE2409229A1 (en) * 1974-02-27 1975-09-04 Tiefbohr Technik Gmbh Deep drilling machine with motor driven slide - has drill bush support connected with slide by coupling component

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2230726A (en) * 1989-04-22 1990-10-31 Emi Mec Ltd Supporting rotatable work during machining

Also Published As

Publication number Publication date
DE2919376B2 (en) 1981-03-19
IT1131490B (en) 1986-06-25
DE2919376A1 (en) 1980-11-20
JPS5837084B2 (en) 1983-08-13
IT8022055A0 (en) 1980-05-14
JPS56500645A (en) 1981-05-14

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