• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Machine tool head comprising an elbow and a tool head with turning movement with respect to the elbow, the elbow and the head contact a contact surface that is inclined at an angle (α) between 25º and 35º with respect to the axis of the tool and the turning movement of the head is carried out by means of two motors, whose output pinions mesh with a crown fixed to the head. The head combines the positioning and work in continuous rotation together with the ability to cover a large volume of work. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2546637A2
    申请号:ES201430414
    申请日:2014-03-24
    公开日:2015-09-25
    发明作者:Luis CALLEJA MARTÍNEZ；Javier ORIVE DE DIEGO
    申请人:Zayer S A；ZAYER SA；
    IPC主号:
    专利说明:

    DESCRIPTION

    Machine tool head.

    OBJECT OF THE INVENTION 5

    The present invention relates to a machine tool head.

    Said machine tool head comprises an elbow and a tool holder head with rotation movement with respect to the elbow, the elbow and the head contact a contact surface that is inclined at an angle (α) between 25 ° and 35 ° with respect to the axis of the tool and the turning movement of the head is carried out by means of two motors, whose output pinions engage with a crown integral to the head.

    BACKGROUND OF THE INVENTION 15

    Machine tools are common in which the head that carries the tool is composed of an elbow, which is the element that connects to the rest of the machine, usually a ram, and a head that is linked to the elbow and is the element itself said to hold the tool: a drill, a strawberry, etc. twenty

    It is known that a relative turning movement is established between the elbow and the ram. The same applicant has been using heads in which the elbow and head contact through a contact surface which is inclined with respect to the axis of the tool either 45º (called head at 45º) or 90º (called head at 90º or orthogonal) . 25

    Each of these heads has its advantages and disadvantages. The 45º has a distance (d) from the nose of the head (end of the head immediately before the tool) to the point of intersection of the axis of rotation of the head and the axis of the tool, commonly referred to as the Pivot distance, much less than in the 90º, of the 30 order of three times, which is more precise when working with the tip of the tool and is more rigid because the torque received when working the tool is directly proportional to the distance ( d) of Pivot.

    In the 45º, the forces that the head supports due to the cutting and advancing movements 35 of the tool act on the contact plane, according to two components much smaller than those of the 90º head that are directly the same machining forces that they act on the contact surface, being the parallel producers of a turning moment and the perpendicular ones of a separation of elbow and head, which ultimately causes inaccuracies in machining, poor surface finish, greater tool wear and less component life.

     In terms of accuracy, the 45º position is positioned every 0.001º with a positioning accuracy P = 14arcsecond and allows good access to different parts of the piece as it requires moving the rest of the machine's axes and turning elbows 45 smaller that the one of 90º, for example to realize mechanized of frontal and lateral faces the head of 90º must turn the elbow 180º to happen of the one to the other while the one of 45º realizes a smaller turn, with what the errors when turning greater Angle are greater, in addition to this disadvantage we must add the greater distance (d) of Pivot and, therefore, from the tip of the tool, with which the errors are magnified. fifty

    As for the versatility, the 45º head does not work in continuous rotation, while the 90º one does work in continuous rotation but it is very bulky and the distance (d) of Pivot is greater, with the disadvantages mentioned above.
    In everything that has been cited, with a head at 90º all types of heads are included with this typology, such as those that are an elbow and a head forming 90º turning one respect to the other on a contact surface, similar to that of 45º, as in which the elbow is like a U-shaped fork and the head rotates inside it, so that the contact surface is double, one on each side of the head. 5

    For all the aforementioned it is necessary a head that combines and even improves the advantages of positioning and access of the 45º head and work in continuous rotation like the one of 90º.
     10
    The present invention is a machine tool head that solves the aforementioned disadvantages and covers the exposed need.

    DESCRIPTION OF THE INVENTION
     fifteen
    The present invention is established and characterized in the independent claims, while the dependent claims describe other features thereof.

    The object of the invention is a machine tool head that works in positioning with the precision of the known heads with contact surface between elbow and head of 45 ° with respect to the axis of the tool and in continuous rotation with the ability to cover a wide working volume as in a head in which between the elbow and head the contact surface is 90º. The technical problem to be solved is to design a head whose components and their disposition allow the expressed object 25 to be reached.

    In view of the foregoing, the present invention relates to a machine tool head comprising an elbow and a tool holder head with rotation movement relative to the elbow, the elbow and the head contact a contact surface.

    It characterizes the invention that the contact surface is inclined at an angle (α) between 25 ° and 35 ° with respect to the axis of the tool and the turning movement of the head is carried out by means of two motors, whose output pinions engage with a solidary crown. at 35 head. In this way, the positioning of the 45º head is achieved, that is, positioning the head every 0.001º, and the working capacity of the 90º, that is to say, reaching more than the hemisphere that is the work volume of the 45º, since the that extends the hemisphere is an angle (β) that is twice the difference between 45º minus the angle (α) of the contact surface, so that for 25º what extends the hemisphere is 40 β = 2 (45º -25º) = 40º, for 35º is β = 2 (45º-35º) = 20º. A preferable inclination is 30º, which then extends β = 2 (45º-30º) = 30º the machinable volume.

    Specifically, the arrangement of the pinions of exit and the crown provide a positioning of precision P = 11arcseg, which gives rise to a precision of positioning that provides a repetitiveness Ps = 9arcseg.

    Also, in particular the arrangement of the output pinions and the crown provide a torque of T = 1000 Nm.
     fifty
    An advantage of the head is that it combines and improves the characteristics of the heads at 45º and 90º, so it is not necessary to have two heads and exchange them depending on the needs, with the consequent advantages of economic savings in equipment and production times.
    DESCRIPTION OF THE FIGURES

    The present specification is complemented by a set of figures, illustrative of the preferred example and never limiting of the invention.
     5
    Figure 1 represents a perspective view of a machine tool with the head of the invention.

    Figure 2 represents a profile view of the head of the invention.
     10
    Figure 3 represents the two engines with the output pinions that engage in the crown.

    Figure 4 represents a profile view of the head and the volume of work.

    DETAILED EXHIBITION OF THE INVENTION 15

    An embodiment of the invention is set forth below with reference to the cited figures.

    Figure 1 shows a machine tool, of the type known as a column, with a bench (7) on which the column (8) is arranged to which a ram (9) is connected, at the end of which The head of the invention is arranged with elbow (1) and head (2).

    Figure 2 shows the machine tool head comprising an elbow (1) and a tool holder head (2) with turning movement with respect to the elbow (1), the elbow (1) and the head (2) contacting a contact surface (3), in which the contact surface (3) is inclined an angle (α) between 25 ° and 35 ° with respect to the axis of the tool (6) and the turning movement of the head (2) is made by two motors (4), whose output pinions (4.1) engage with a crown (5) integral to the head (2), figure 3.
     30
    The arrangement of the output pinions (4.1) and the crown (5) provide a precision positioning P = 11arcseg, which results in a repetitiveness Ps = 9arcseg. Also, the arrangement of the output pinions (4.1) and the crown (5) provide a torque of T = 1000 Nm.
     35
    It is found that an optimum inclination of the contact surface (3) is that which has 30 °.

    Figure 4 shows the head and the volume of work it covers, with β being the angle that extends from the hemisphere. 40

    Also, the head of the embodiment shown allows to work in positioning and in continuous rotation so that the tool (6) can work with high torque, such as 2000 Nm, and can also do it at high speed, 24000 rpm, by means of electro spindles, not shown In the figures. Four. Five
    权利要求:
    Claims (6)
    [1]

    1.- Machine tool head comprising an elbow (1) and a tool holder head (2) with rotation movement with respect to the elbow (1), the elbow (1) and the head (2) contact a contact surface ( 3), characterized in that the contact surface 5 (3) is inclined at an angle (α) between 25º and 35º with respect to the tool axis (6) and the turning movement of the head (2) is carried out by means of two motors (4), whose output pinions (4.1) mesh with a crown (5) integral to the head (2).

    [2]
    2. Head according to claim 1 wherein the arrangement of the output pinions (4.1) and the crown (5) provide a precision positioning P = 11arcseg.

    [3]
    3. - Head according to claim 2 wherein the positioning accuracy provides repeatability Ps = 9arcseg.
     fifteen
    [4]
    4. Head according to claim 1 wherein the arrangement of the output pinions (4.1) and the crown (5) provide a torque T = 1000 Nm.

    [5]
    5. Head according to any of the preceding claims wherein the angle (α) of the contact surface (3) is 30 °. twenty

    [6]
    6. Head according to any of the preceding claims in which the elbow (1) has rotational movement with respect to a ram (9) by means of two motors (4), whose output pinions (4.1) engage with a crown (5) solidarity with the elbow (1).
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    同族专利:
    公开号 | 公开日
    ES2546637B2|2016-03-23|
    ES2546637R1|2015-11-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP3593940A1|2018-07-09|2020-01-15|Reiden Technik AG|Machine tool|ITVE20000020U1|2000-09-25|2002-03-25|Fpt Ind Spa|BIROTATIVE HEAD SPINDLE HOLDER FOR MACHINE TOOL|
    ITVE20000025U1|2000-10-17|2002-04-17|Fpt Ind Spa|BIROTATIVE HEAD SPINDLE HOLDER FOR MACHINE TOOL|
    WO2005108007A1|2004-05-10|2005-11-17|Hpt Sinergy S.R.L.|Machine tool with a mono-rotatable spindle head and mono-rotatable workholding table|
    EP2295200A1|2009-09-10|2011-03-16|Klingelnberg AG|Tool head for use in a multi-axle machine, multi-axle machine with such a tool head and use of such a machine|
    法律状态:
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201430414A|ES2546637B2|2014-03-24|2014-03-24|TOOL MACHINE HEAD|ES201430414A| ES2546637B2|2014-03-24|2014-03-24|TOOL MACHINE HEAD|
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