Spindle head system with spindle head adjustment device

Description

[0001] The present invention relates to a spindle head system comprising a spindle head and a spindle head adjustment device, wherein the spindle head has a spindle head housing extending along a spindle head rotation axis and a cross slide mounted vertically adjustable from the spindle head housing to the spindle head rotation axis, and the spindle head adjustment device is designed for cross slide adjustment of the cross slide.

[0002] EP 0 259 570 A1 discloses a spindle head with an adjustably mounted cross slide and a spindle head adjustment device. The spindle head adjustment device is designed to adjust the cross slide vertically relative to a spindle rotation axis. The spindle head can therefore be used, for example, for boring.

[0003] The spindle head adjustment device shown in EP 0 259 570 A1 has an adjusting piston mounted axially adjustable within the spindle head. An axial extension of the adjusting piston is inclined relative to the spindle rotation axis and engages a recess in the cross slide such that an axial adjustment of the adjusting piston is converted into an adjustment movement of the cross slide perpendicular to a spindle rotation axis.

[0004] DE 25 16 110 B1 shows a tool head and an adjusting ring.

[0005] US 1 935 493 A shows a tool holder.

[0006] The disadvantage of such a spindle head adjustment device is that, due to its location within the spindle head, it results in a complicated spindle head structure. This makes the spindle head and spindle head adjustment device expensive to manufacture.

[0007] The invention is therefore based on the object of creating a spindle head system which enables cross slide adjustment with a simple and cost-effective design.

[0008] The object is achieved by a spindle head system according to claim 1. Advantageous further developments of the spindle head system can be found in the claims dependent on claim 1.

[0009] A spindle head adjustment device for cross-slide adjustment comprises a spindle head frame for mounting on a spindle head supporting a cross-slide, a first adjustment element, and a second adjustment element arranged opposite the first adjustment element. The first adjustment element and the second adjustment element are each mounted on the spindle head frame so as to be extendable into an interior region of the spindle head frame and retractable out of the interior region of the frame. The cross-slide can therefore be adjusted by simply mounting the spindle head frame on the spindle head and orienting the spindle head frame such that the movement of the first adjustment element and / or the second adjustment element can be transferred to the cross-slide upon each extension into the interior region of the frame.The spindle head can therefore be designed more simply than with an internal adjustment mechanism. Fewer components are required for the adjustment mechanism for cross-slide adjustment in the spindle head because the spindle head adjustment device provides an external adjustment mechanism that can be reversibly released from the spindle head. The components required for cross-slide adjustment are therefore located on the spindle head adjustment device, reducing the number of internal components on the spindle head.

[0010] The spindle head adjustment device can therefore be placed on the spindle head, preferably on an outer side of a spindle head housing of the spindle head, for example as a ring-shaped closed element.

[0011] When attached to the spindle head adjustment device, the cross slide can be adjusted in two opposite directions, each oriented perpendicular to the spindle rotation axis. The spindle rotation axis can be aligned with a longitudinal axis of the spindle head adjustment device. One vertical direction is the direction in which the first adjustment element can be extended, and the other, opposite vertical direction, is the direction in which the second adjustment element can be extended.

[0012] During adjustment of the cross slide by the first adjustment element, the first adjustment element contacts the cross slide. The same applies to the adjustment of the cross slide by the second adjustment element.

[0013] If the adjustment of the cross slide is effected by extending the first adjustment element into the frame interior, the second adjustment element must be retracted from the frame interior in such a way that the adjustment of the cross slide effected by the first adjustment element is not blocked by the second adjustment element and vice versa.

[0014] "Extendable into the frame interior" means that the first adjustment element and the second adjustment element can each be extended from where they are mounted on the spindle head frame, so that after extension, they each extend further into the frame interior than before. "Extendable out of the frame interior" means the adjustment elements extend less into the frame interior after retraction than before retraction.

[0015] After the cross slide has been adjusted, the spindle head frame can be removed from the spindle head, i.e. it can be reversibly removed from the spindle head, for example simply by overcoming a frictional force between the spindle head frame and the spindle head, i.e. analogous to removing a circumferentially closed ring from a shaft.

[0016] Preferably, the first adjustment element and / or the second adjustment element are each mounted on the spindle head frame so that they can be fully retracted from the frame interior. After the respective adjustment element has been fully retracted, the respective adjustment element no longer protrudes into the frame interior. This makes it even easier to remove the spindle head frame from the spindle head because, after being fully retracted, the respective adjustment element can no longer collide with the spindle head when the spindle head frame is removed.

[0017] The frame inner area refers to the area that is circumferentially surrounded by the spindle head frame and within which the spindle head is to be arranged.

[0018] Preferably, the first adjustment element and the second adjustment element each extend along a longitudinal axis, and the longitudinal axis of the first adjustment element is aligned with the longitudinal axis of the second adjustment element. This allows for tilt-moment-free adjustment of the cross slide.

[0019] According to a further development of the spindle head adjustment device, the interior of the frame is designed to be completely open. This allows the spindle head frame to be placed on the spindle head in the manner of a ring or similar, or the spindle head can be arranged so that it passes through the spindle head frame. This advantageously allows a cutting tool mounted on the cross slide, which usually extends axially further forward than the spindle head with respect to an end face of the spindle head, to remain on the cross slide while the cross slide is adjusted by the spindle head adjustment device. This eliminates the need to disassemble the cutting tool to make room for placing the spindle head adjustment device on the spindle head. The disassembly and assembly time saved in this way can be used for workpiece machining, for example boring, using the spindle head.

[0020] According to a further development of the spindle head adjustment device, at least the first adjustment element is mounted on the spindle head frame for converting a rotary movement into a linear adjustment movement. This is advantageous with regard to precise adjustment of the cross slide because the rotary movement can be measured based on a number of revolutions, and there is a linear relationship between the number of revolutions and the distance extended or retracted by the first adjustment element. In other words, each revolution of the first adjustment element results in a precise stroke of the first adjustment element. The first adjustment element can thus have an external thread that engages a matching internal thread of the spindle head frame. The thread engagement realized between the external thread and the internal thread additionally ensures axial self-locking of the first adjustment element in the absence of rotary movement.In addition to the first adjustment element, the second adjustment element can also be mounted on the spindle head frame for converting a rotary movement into a linear adjustment movement, for example by having an external thread analogous to the first adjustment element, which engages in a matching internal thread of the spindle head frame.

[0021] According to a further development of the spindle head adjustment device, the first adjustment element and the second adjustment element each have an external thread screwed into the spindle head frame, and the direction of rotation of the external thread of the first adjustment element is the same as the direction of rotation of the external thread of the second adjustment element. Thus, the external thread of the first adjustment element and the external thread of the second adjustment element can each be designed either as a right-hand thread or as a left-hand thread. In the case of the two right-hand threads, for example, the first adjustment element can be extended into the frame interior by a clockwise rotational movement initiated outside the frame interior, and the second adjustment element can be retracted out of the frame interior by a counterclockwise rotational movement initiated outside the frame interior, and vice versa.The same applies to the two left-handed threads. However, implementing the external threads as right-handed threads is ergonomically particularly advantageous when both adjustment elements are operated by a right-handed person. This is because, when rotating clockwise, the right-handed person can apply a greater torque to the first adjustment element and the second adjustment element, respectively, and thus more easily overcome frictional resistance when the first adjustment element and the second adjustment element extend against the cross slide. When the first adjustment element and the second adjustment element retract from the frame interior, the respective adjustment element moves away from the cross slide.

[0022] According to a further development of the spindle head adjustment device, at least the first adjustment element has a rotary drive section for rotationally driving the first adjustment element. The rotary drive section is arranged outside the frame interior and forms a stop for abutting against an outer side of the spindle head frame with regard to an extension of the first adjustment element into the frame interior. This limits the adjustment path traversable by the first adjustment element, so that a maximum cross-slide adjustment in a direction perpendicular to the spindle rotation axis can be exactly reproduced. Because the rotary drive section is designed as a stop, this part of the first adjustment element protrudes further perpendicular to the longitudinal axis of the first adjustment element than the remaining part of the first adjustment element.With the help of the rotary drive section, a greater torque can be applied to extend the first adjustment element into the frame's interior with the same force. This particularly facilitates manual operation of the first adjustment element. The second adjustment element can also have a rotary drive section, which is designed and arranged in a similar way to the rotary drive section of the first adjustment element.

[0023] According to a further development of the spindle head adjustment device, the rotary drive section limits the maximum translational adjustment travel of the first adjustment element when extending into the frame interior, and the maximum translational adjustment travel lies in the range of 5 mm to 20 mm. This is a particularly suitable range for spindle heads with a maximum outer diameter of up to 60 mm and an adjustable cross slide, because a larger translational adjustment travel, i.e., a larger adjustment of the cross slide, has been shown to lead to a supercritical imbalance of the spindle head.

[0024] According to a further development of the spindle head adjustment device, the spindle head frame is designed as an axially continuously open hollow cylinder body extending along a cylinder axis, the spindle head frame is designed to surround the frame's interior region in a circumferentially closed manner, and at least the first adjustment element is mounted on the spindle head frame so that it can be adjusted perpendicular to the cylinder axis. This is a particularly simple and therefore cost-effective and low-maintenance development of the spindle head adjustment device because the spindle head frame is designed merely as a hollow cylinder body, which, due to its circumferentially closed design, can be placed directly onto a spindle head.It is advantageous if the spindle head, in the case of a cylindrical spindle head housing, has an outer diameter that is larger than the inner diameter of the spindle head frame, allowing the spindle head frame to be mounted force-fit onto the spindle head. In this case, no further structural measures, such as screw connections, are required on the spindle head frame side to mount the spindle head frame onto the spindle head and to remove it from the spindle head after the cross-slide adjustment is complete.

[0025] According to a further development of the spindle head adjustment device, the first adjustment element is mechanically decoupled from the second adjustment element in such a way that the first adjustment element can be extended into the interior of the frame while the second adjustment element remains stationary. The spindle head adjustment device is thereby made even simpler in terms of its structure because a coupling mechanism that would couple the extension of the first adjustment element into the interior of the frame with the retraction of the second adjustment element out of the interior of the frame is no longer required. It has been shown that for the cross slide adjustment, an operator's visual judgment is sufficient to retract the second adjustment element sufficiently far out of the interior of the frame so that the cross slide adjustment is not blocked by the extension of the first adjustment element into the interior of the frame, and vice versa.Mechanically decoupled means that the first adjustment element can be turned, for example in the manner of a screw, while the second adjustment element remains stationary and vice versa.

[0026] According to a further development of the spindle head adjustment device, the spindle head frame has a continuously open insertion recess for inserting an adjusting tool section into the frame interior. Typically, the friction between the cross slide and the rest of the spindle head is not sufficient to adequately lock the cross slide during, for example, boring, i.e., the cross slide would move radially outwards or radially inwards under radial load in the absence of a mechanical locking device. By providing the insertion recess, a locking mechanism implemented by means of at least one clamping screw for locking the cross slide can be actuated by means of the adjusting tool section when the spindle head frame is in the mounted state, i.e.The otherwise existing risk of the cross-slide position reached after the cross-slide adjustment has been completed being unintentionally changed is eliminated because the locking mechanism remains accessible and can therefore be actuated via the insertion recess when the spindle head frame is in place. The insertion recess is preferably designed as an elongated hole because this allows an insertion movement of the adjusting tool section through the spindle head frame that is inclined relative to a clamping screw axis of a clamping screw of the locking mechanism, i.e. the operator has more play during insertion, which makes insertion easier for him. Furthermore, locking mechanisms with multiple clamping screws can also be actuated using such an elongated hole when the spindle head frame is in place.Preferably, the insertion recess is arranged between the first adjusting element and the second adjusting element, viewed in the circumferential direction of the spindle head frame, because this reduces the risk of a collision of the adjusting tool section with these adjusting elements.

[0027] The aforementioned clamping screw of the locking mechanism, for example, extends through the cross slide and is screwed into the spindle head outside the cross slide. Thus, when secured in this manner, the clamping screw acts as a locking element. However, if the clamping screw outside the cross slide is disengaged from the spindle head, the cross slide is movable in a direction perpendicular to the spindle rotation axis, which is aligned with a longitudinal axis of the spindle head frame, and can be adjusted using the spindle head adjustment device.

[0028] The spindle head system comprises a spindle head and a spindle head adjustment device, wherein the spindle head has a spindle head housing extending along a spindle head rotation axis and a cross slide mounted so as to be adjustable perpendicularly from the spindle head housing to the spindle head rotation axis, and the spindle head adjustment device is designed for cross slide adjustment of the cross slide, wherein the spindle head adjustment device is designed according to claim 1 and / or one of the claims dependent on claim 1 and / or other embodiments disclosed here, and wherein the spindle head frame is designed to be reversibly detachably placed on an outer side of the spindle head housing. The advantages disclosed for the spindle head adjustment device are thereby realized in the spindle head system.The spindle head system can have the spindle head frame already mounted on the outside of the housing arranged in this way, or, in the form of a kit, the spindle head frame can be arranged in this way, separated from the outside of the housing. The spindle head rotation axis can be arranged in alignment with a spindle rotation axis of a spindle, which can be connected to the spindle head in a rotationally fixed manner.

[0029] The cross slide has a first recess for lateral guidance of the first adjustment element. The first recess extends parallel to an adjustment direction of the cross slide oriented perpendicular to the spindle head rotation axis, and the first adjustment element is mounted on the spindle head frame so that it can be extended into the first recess. This prevents the first adjustment element from breaking out of the cross slide during cross slide adjustment. Furthermore, the alignment of the first adjustment element parallel to the adjustment direction of the cross slide is maintained due to the lateral guidance of the first adjustment element, which allows precise adjustment of the cross slide by extending the first adjustment element into the interior of the frame.

[0030] In addition to the first indentation, the cross slide can have a second indentation, wherein the second indentation is designed for lateral guidance of the second adjustment element, extends parallel to the adjustment direction of the cross slide, and the second adjustment element is mounted on the spindle head frame so that it can be extended into the second indentation. The advantages described for the first indentation are thus realized analogously on the second indentation side when the second adjustment element extends into the frame interior, i.e., with respect to the cross slide adjustment by the second adjustment element.

[0031] According to a further development of the spindle head system, the first recess is open when viewed parallel to the spindle head rotation axis. This facilitates the positioning of the first adjustment element within the first recess when placing the spindle head frame on the outside of the housing, and thus the described alignment of the first adjustment element parallel to the adjustment direction of the cross slide. This is because the first recess extends parallel to the adjustment direction of the cross slide. Viewed parallel to the spindle head rotation axis, the first recess is therefore freely visible due to its open design in this direction.In the case of a first indentation closed in the direction of view parallel to the spindle head rotation axis, this indentation would be covered by the spindle head frame and the first adjustment element when the spindle head frame is placed on the outside of the housing, which makes it difficult to align the first adjustment element parallel to the adjustment direction of the cross slide.

[0032] Preferably, the first recess is open on a front side of the spindle head; the "front side" refers to the side intended for the arrangement of a cutting tool on the cross slide. This is because the spindle head frame is preferably mounted on the outside of the housing, looking toward the front side, because a rear side of the spindle head is usually connected to a spindle, which makes mounting the spindle head frame on the rear side difficult.

[0033] The first recess, which is open when viewed parallel to the spindle head rotation axis, can be designed, for example, as a longitudinal groove. The described second recess can also be open when viewed parallel to the spindle head rotation axis, for example, as a longitudinal groove.

[0034] According to a further development of the spindle head system, the spindle head frame is designed to be rotatable about the spindle head rotation axis relative to the outside of the housing, and the first indentation is designed such that the first adjustment element is mounted on the spindle head frame so that it can be extended into the first indentation when viewed parallel to the spindle head rotation axis, with an initial inclination to the first indentation. This further facilitates the alignment of the first adjustment element parallel to the adjustment direction of the cross slide. This is because the initial inclination of the first adjustment element relative to the first indentation means that as the first adjustment element is extended further into the first indentation, the spindle head frame is rotated about the spindle head rotation axis relative to the outside of the housing until the first adjustment element is aligned parallel to the adjustment direction of the cross slide.The extent of the inclination is therefore successively reduced as the first adjustment element is extended further from its initial inclination into the first indentation; the rotation of the spindle frame is not blocked due to its described rotatable arrangement on the outside of the housing. The first adjustment element is therefore aligned parallel to the adjustment direction of the cross slide due to the initial inclination and the further extension of the first adjustment element therefrom. The inclination means that, viewed parallel to the spindle head rotation axis, a longitudinal axis of the first adjustment element crosses a longitudinal axis of the first indentation; the longitudinal axes are therefore not aligned; the longitudinal axis of the first indentation is arranged perpendicular to the spindle head rotation axis.After the described alignment has been completed, i.e. the longitudinal axes are aligned, the spindle head frame is no longer rotated as the first adjustment element is extended further, i.e. the longitudinal axis of the first adjustment element is then aligned with the longitudinal axis of the first indentation or is at least parallel to it.

[0035] The described second recess can be configured such that the second adjustment element is mounted on the spindle head frame so that it can be extended into the second recess, viewed in the direction parallel to the spindle head rotation axis, with an initial inclination relative to the second recess. The spindle head frame is configured to be rotatable relative to the housing exterior about the spindle head rotation axis. The advantages described for the inclination of the first adjustment element relative to the first recess are implemented analogously on the second recess side, so that the second adjustment element can be aligned by extending into the second recess.

[0036] According to a further development of the spindle head system, the cross slide has a second indentation for laterally guiding the second adjustment element, the second indentation extends parallel to the adjustment direction of the cross slide, the second adjustment element is mounted on the spindle head frame so that it can be extended into the second indentation, and a maximum depth of the second indentation measured perpendicular to the spindle head rotation axis is different from a maximum depth of the first indentation measured perpendicular to the spindle head rotation axis. This creates space for attaching a cutting tool to the cross slide eccentrically with respect to the spindle head rotation axis, i.e. a tool holder recess in the form of a bore in the cross slide can be arranged eccentrically. The maximum depth of the first indentation can therefore be greater than the maximum depth of the second indentation.

[0037] According to a further development of the spindle head system, the spindle head has an adjustable locking element for reversibly releasably locking the cross slide relative to the spindle head housing, and the spindle head adjustment device is designed according to claim 12. This allows the locking element, for example a clamping screw, to be adjusted to lock or release the cross slide in the attached state of the spindle head frame. The risk of undesired cross slide adjustment in the time between the cross slide adjustment and the locking of the cross slide is thus avoided. This is because the cross slide can be adjusted by the first adjustment element and, if necessary,the second adjusting element can be held in the desired cross slide position, while the locking element for locking the cross slide can be adjusted by inserting the adjusting tool section through the insertion recess and using it to adjust the locking element.

[0038] Further advantages and benefits of the present invention will become apparent from the following description of a spindle head, a spindle head adjustment device and a spindle head system with reference to the accompanying figures.

[0039] From the figures show: Fig. 1: in a side view looking perpendicular to a spindle head rotation axis, a schematic representation of a spindle head with an adjustable cross slide and an optional cutting tool; Fig. 2: in a side view looking along the arrow II from Fig. 1 a schematic representation of the spindle head from Fig. 1 ; Fig. 3: a schematic representation of a longitudinal section through the spindle head from Fig. 1 according to section line III from Fig. 2 ; Fig. 4: a perspective, schematic representation of a spindle head adjustment device viewed diagonally from the top left; Fig. 5: in a top view viewed along the arrow V from Fig. 1 a schematic representation of a spindle head system, which consists of the spindle head Fig. 1 bis Fig. 3 and the spindle head adjustment device mounted on the spindle head made of Fig. 4 Fig. 6: a schematic representation of a longitudinal section through the spindle head system from Fig. 5 according to section line VI from Fig. 5 ; Fig. 7a: a schematic representation of an initial inclination of an adjusting element when extending into a recess in the sense of the present disclosure; Fig. 7b: a schematic representation of the adjusting element from Fig. 7a after the adjustment element is aligned parallel to an adjustment direction within the recess.

[0040] One in Fig. 1 The spindle head 1 shown is rotatably driven about a spindle head rotation axis 2. The spindle head 1 has a spindle head housing 3. The spindle head housing 3 has a housing outer side 3a. In the spindle head housing 3, a cross slide 4 is mounted perpendicular to the spindle head rotation axis 2 and is adjustable in the opposite directions of the double arrow 5.

[0041] An optional cutting tool 6 is attached to the cross slide 4; it is also conceivable and possible to attach a forming tool, which is designed, for example, for smoothing and / or flanging, or another tool, which is designed, for example, for brushing.

[0042] The optional cutting tool 6 has a tool arm 6a extending forward relative to the spindle head housing 3 and a cutting insert 6b attached to the tool arm 6a.

[0043] The spindle head 1 thus equipped with the cutting tool 6 can be used for boring, i.e., enlarging an already produced bore, due to the adjustability of the cross slide 4 and thus of the cutting tool 6 perpendicular to the spindle head rotation axis 2. The spindle head 1 can therefore also be referred to as a boring head.

[0044] The spindle head housing 3 has a cylindrical connecting section 7 extending parallel to the spindle head rotation axis 2. The connecting section 7 can be connected in a rotationally fixed manner to a tool spindle (not shown), or simply a spindle, so that the spindle head 1 can be rotated, i.e., driven, about a spindle rotation axis aligned with the spindle head rotation axis 2.

[0045] In Fig. 1 Two locking elements 8 are also visible, which are in engagement with the spindle head housing 3 and the cross slide 4, respectively; a number of locking elements 8 different from two is also conceivable and possible. The locking elements 8 therefore lock the cross slide 4 relative to the spindle head housing 3 against adjustment of the cross slide 4 in both directions of the double arrow 5. If the locking elements 8 are brought out of engagement with the spindle head housing 3, the cross slide 4 can, however, be adjusted in both directions of the double arrow 5; for this purpose, only a frictional resistance between the cross slide 4 and the spindle head housing 3 must be overcome.

[0046] Out of Fig. 2 It is particularly clearly visible that the cross slide 4 has a V-shaped projection 4a. The projection 4a is guided in a rail-like manner in a receiving groove 3b of the spindle head housing 3 following the projection 4a, as can be seen from a summary of the Fig. 1 and Fig. 2 can be seen. The engagement of the cross slide 4 in the spindle head housing 3 guided in this way provides an axial pull-out protection of the cross slide 4 relative to the spindle head housing 3 with respect to the spindle head rotation axis 2.

[0047] In Fig. 2 For both locking elements 8, it is evident from the example of one of the locking elements 8 that the locking elements 8 are screwed into the projection 4a; Fig. 2 is a transparent representation of the spindle head 1. A longitudinal axis 8a of the locking element 8 is inclined relative to the spindle head rotation axis 2. With regard to the Fig. 2 In the selected illustration, this means that the locking elements 8 can be actuated diagonally from above. The cross slide 4 is thereby pressed simultaneously axially and radially against the receiving groove 3b.

[0048] Fig. 2 further shows that the cross slide 4 has two fastening elements 4b in the form of a fastening screw each. The fastening elements 4b are screwed into the cross slide 4 in order to fix the optional cutting tool 6, which is Fig. 3 not shown, to be attached to the cross slide 4.

[0049] In Fig. 2 In addition, a recess 4c of the cross slide 4 is visible; a recess 4d of an analogous design is shown in Fig. 3 The function of the indentations 4c and 4d is explained in Fig. 6 discussed in more detail.

[0050] From the Fig. 3 The internal structure of the spindle head 1 is particularly clearly visible in the longitudinal section through the spindle head 1 shown.

[0051] So in Fig. 3 It can be seen that the fastening elements 4b abut the optional cutting tool 6, which is arranged within a tool receiving recess 4e of the cross slide 4 on the side of the tool arm 6a, against the cross slide 4 perpendicular to the spindle head rotation axis 2. In this way, an axial pull-out protection of the cutting tool 6 is provided by means of a frictional force prevailing between the cross slide 4 and the cutting tool 6, thus the cutting tool 6 is fastened to the cross slide 4. The tool arm 6a thereby abuts a projection 4f of the tool receiving recess 4e with respect to the spindle head rotation axis 2.

[0052] A respective longitudinal axis 4g of the fastening elements 4b is oriented perpendicular to the spindle head rotation axis 2 because this maximizes a contact force exerted perpendicularly on the tool arm 6a by the fastening elements 4b.

[0053] The cross slide 4 slides during an adjustment in one of the directions of the double arrow 5 on a flat housing bottom surface 3c of the spindle head housing 3 and strikes against the housing bottom surface 3c in relation to Fig. 1 and 2 described locked state axially with respect to the spindle head rotation axis 2.

[0054] The spindle head housing 3 has an optional internal coolant supply system, which is formed by an axial channel 3d, which runs coaxially to the spindle head rotation axis 2 within the connecting section 7, and a blind hole distribution bore 3e, which eccentrically interrupts the housing bottom surface 3c relative to the spindle head rotation axis 2. The axial channel 3d opens into the blind hole distribution bore 3e. The blind hole distribution bore 3e opens into an optional axial channel 4h of the cross slide 4, wherein the axial channel 4h, which runs parallel to the spindle head rotation axis 2, and the blind hole distribution bore 3e partially overlap in the direction parallel to the spindle head rotation axis 2 depending on the adjustment of the cross slide 4, as shown in Fig. 3 shown, or completely overlap. The axial channel 4h opens into the tool holder recess 4e, so that coolant can reach the optional cutting tool 6 through the axial channel 3d, the blind hole distribution bore 3e, and the axial channel 4h along a flow direction defined in this way, in order to flow internally through the cutting tool 6 and to be able to exit the cutting tool 6 on the side of the cutting insert 6b.

[0055] Fig. 3 also shows the indentations 4c and 4d in longitudinal section, where it can be seen that the Fig. 3 shown right recess 4d has a greater maximum depth measured perpendicular to the spindle head rotation axis 2 than that in Fig. 3 shown left recess 4c. Accordingly, space was provided within the cross slide 4 for the offset of the tool holder recess 4e shown in Fig. 3 shown left direction of the double arrow 5 away from the spindle head rotation axis 2.

[0056] Fig. 4 shows a spindle head adjustment device 9. The spindle head adjustment device 9 is designed to adjust the cross slide of a spindle head, for example the cross slide 4 of the spindle head 1, perpendicular to a spindle head rotation axis, for example the spindle head rotation axis 2.

[0057] A cross slide adjustment by means of the spindle head adjustment device 9 is described below using the example of a cross slide adjustment of the cross slide 4; however, it is also conceivable and possible that the cross slide of another spindle head is adjusted by means of the spindle head adjustment device 9.

[0058] A continuously open, hollow-cylindrical spindle head frame 10 of the spindle head adjustment device 9 is placed on the outer side 3a of the spindle head housing 3; thus, the spindle head frame 10 is continuously open in both directions parallel to the spindle head rotation axis 2. The spindle head 1 is therefore arranged on the side of its spindle head housing 3 within an inner frame region 11 circumferentially surrounded by the spindle head frame 10.

[0059] The spindle head frame 10 is rotated about the spindle head rotation axis 2 after or during placement on the housing outer side 3a, ie relative to the housing outer side 3a, such that each of two adjustment elements 12 and 13 screwed into the spindle head frame 10 opposite each other can be adjusted parallel to the double arrow 5; such a parallel alignment can be carried out directly by eye of an operator or by extending at least one of the adjustment elements 12 or 13 into the frame inner area 11 under an initial inclination to the double arrow 5. The latter is referred to in the Fig. 7a und 7b discussed in more detail.

[0060] The cross slide 4 can be moved by extending the adjusting element 12 into the frame inner area 11 in the right direction of the double arrow 5 according to Fig. 1 be adjusted, provided that the adjustment element 13 has been or will be retracted sufficiently far out of the frame interior 11. The same applies to an extension of the adjustment element 13 into the frame interior 11 and a retraction of the adjustment element 12 out of the frame interior 11, if required for this purpose.

[0061] The adjustment elements 12 and 13 are each adjusted—that is, they can be optionally extended into or retracted from the frame's interior area 11—by rotating the adjustment elements 12 and 13 in the manner of a screw according to a threaded connection formed with the spindle head frame 10. Each of the adjustment elements 12 and 13 therefore has an external thread section 14, in the region of which the adjustment elements 12 and 13 are each screwed into the spindle head frame 10.

[0062] The external thread sections 14 are each designed as a right-hand thread, so that a clockwise rotation initiated outside the frame interior area 11 leads to an extension of the adjustment elements 12 and 13 into the frame interior area and a counterclockwise rotation initiated outside the frame interior area 11 leads to a retraction of the adjustment elements 12 and 13 out of the frame interior area 11; however, a design as a left-hand thread is also conceivable and possible. In this way, an operator can actuate the adjustment elements 12 and 13 in such a way that one of the adjustment elements 12 or 13 is extended and the other of the adjustment elements 12 or 13 is retracted and vice versa. The former to adjust the cross slide 4, the latter so as not to block the adjustment of the cross slide 4.For such rotation of the adjustment elements 12 and 13, the adjustment elements 12 and 13 each have a rotary drive section 15 located outside the frame interior 11. The rotary drive sections 15 are each designed as a rotary knob.

[0063] When the adjustment element 12 reaches its maximum adjustment position into the frame interior 11, the rotary drive section 15 of the adjustment element 12 strikes an outer side 16 of the spindle head frame 10 in the manner of a screw head, thereby limiting the maximum adjustment travel of the adjustment element 12 during extension. The same applies to the rotary drive section 15 of the adjustment element 13.

[0064] The spindle head frame 10 has at least one continuously open insertion recess 17 in the form of an elongated hole. A portion of an adjusting tool, for example, the front end of a screwdriver, can be inserted through the insertion recess 17 into the frame interior 11 in order to adjust the locking elements 8 located within the frame interior 11. The cross slide 4 can thus be locked while the spindle head frame 10 rests on the housing exterior 3a.

[0065] Fig. 5 and 6 show a spindle head system 18. The spindle head system 18 comprises the spindle head 1 and the spindle head adjustment device 9, which is arranged on the housing side 3a, in a force-fitting manner.

[0066] In the overview of Fig. 5 and Fig. 6 It is particularly clearly visible that the cross slide 4 has been adjusted to the maximum in the right direction of the double arrow 5; the cross slide 4 thus strikes the spindle head frame 10 in this adjusted manner.

[0067] The adjustment element 12 has accordingly traveled a maximum adjustment path in the right direction of the double arrow 5 when extending into the frame interior area 11. The adjustment element 12 protrudes into the recess 4d in order to contact the cross slide 4 within the recess 4d.

[0068] The indentation 4d ensures lateral guidance of the adjustment element 12 perpendicular to the double arrow 5, because the indentation 4d is designed to follow the adjustment element 12. The adjustment element 13 has been retracted sufficiently far out of the frame interior 11 for the described maximum adjustment of the cross slide 4 in the right direction of the double arrow 5, with the adjustment element 13 protruding into the indentation 4c. By this latter measure, the cross slide 4 can be reset parallel to the double arrow 5 in the left direction of the double arrow 5 by extending the adjustment element 13 while being guided laterally by the indentation 4c; for this purpose, the adjustment element 12 must be retracted from the frame interior 11 in the left direction of the double arrow 5 far enough that the adjustment effected by the adjustment element 13 is not blocked.

[0069] In Fig. 5 It is particularly clearly visible that the indentations 4c and 4d are designed as open longitudinal grooves on the side of the tool holder recess 4e, viewed parallel to the spindle head rotation axis 2. The adjustment elements 12 and 13 can be removed by placing the spindle head frame 10 parallel to the viewing direction. Fig. 5 be inserted into the longitudinal grooves 4c and 4c in sections; either under an initial inclination or already parallel to the double arrow 5. The inclination is referred to Fig. 7a und Fig. 7b discussed in more detail.

[0070] Out of Fig. 5 It can also be seen that the cross slide 4 has an optional scale 20 and the spindle head housing 3 has an optional scale 21 opposite the scale 20. The scales 20 and 21 form a vernier, so that the adjustment of the cross slide 4 can be read directly from the vernier thus formed.

[0071] Fig. 6 Due to the gap-free contact between the spindle head frame 10 and the housing outer side 3a below the housing bottom surface 3c, it is clear that the spindle head frame 10 is placed force-fittingly on the spindle head housing 3.

[0072] Fig. 7a und Fig. 7b show in a synopsis the interaction of the indentation 4d with the adjusting element 12 in the area of the external thread section 14. The viewing direction in Fig. 7a und 7b is facing from Fig. 5 each identical, i.e. parallel to the spindle head rotation axis 2.

[0073] The adjusting element 12 is in Fig. 7a arranged at an initial inclination into the recess 4d. This inclination is expressed in that a longitudinal axis 12a of the adjusting element 12 is arranged at an inclination relative to a longitudinal axis 40 of the recess 4d; the longitudinal axes 12a and 40 thus intersect in the viewing direction parallel to the spindle head rotation axis 2; the longitudinal axis 40 is the longitudinal axis parallel to which the recess 4d extends, and is thus oriented parallel to the double arrow 5.

[0074] If you continue to extend, starting from the Fig. 7a shown initial inclination up to the one shown in Fig. 7b shown parallel position, of the adjusting element 12 into the recess 4d, the adjusting element 12 and thus the spindle head frame 10 (not shown) rotate in a direction of rotation 400, i.e. around the spindle head rotation axis 2, for example, counterclockwise, so that the longitudinal axes 12a and 40 are aligned with each other and the adjusting element 12, as in Fig. 7b shown, parallel to the longitudinal axis 40 against the indentation 4d.

[0075] The clearance required between the adjusting element 12 and the recess 4d for such an alignment of the adjusting element 12 parallel to the longitudinal axis 40 and thus to the double arrow 5 is indicated by the reference numeral 500 in Fig. 7b provided; a play measured perpendicular to the longitudinal axis12a is exaggeratedly large for reasons of clarity in Fig. 7b shown.

[0076] The alignment of the adjusting element 13 under an analogous inclination relative to the bulge 4c is carried out analogously to the described alignment of the adjusting element 12.

Claims

1. Spindle-head system (18), comprising a spindle head (9) and a spindle-head-adjusting device (1), wherein the spindle head (9) has a spindle-head housing (3), extending along a spindle-head axis of rotation (2), and has a cross slide (4), mounted so as to be perpendicularly adjustable in relation to the spindle-head axis of rotation (2) from the spindle-head housing (3), and the spindle-head-adjusting device (1) is configured for cross-slide adjustment of the cross slide (4), wherein the spindle-head-adjusting device (1) has a spindle-head frame (10) for being placed onto the spindle head (9), has a first adjustment element (12, 13) and a second adjustment element (12, 13), which is arranged opposite the first adjustment element (12, 13), wherein the first adjustment element (12, 13) and the second adjustment element (12, 13) are each mounted on the spindle-head frame (10) so as to be extendable into a frame inner region (11) of the spindle-head frame (10) and retractable out of the frame inner region (11), wherein the spindle-head frame (10) is configured to be placeable onto a housing outer side (3a) of the spindle-head housing (3) in a reversibly releasable manner, characterized in that the cross slide (4) has a first indentation (4c, 4d) for lateral guidance of the first adjustment element (12, 13), the first indentation (4c, 4d) extends parallel to an adjustment direction (5), which is oriented perpendicularly to the spindle-head axis of rotation (2), of the cross slide (4), and the first adjustment element (12, 13) is mounted on the spindle-head frame (10) so as to be extendable into the first indentation (4c, 4d).

2. Spindle-head system (18) according to Claim 1, wherein, in a viewing direction parallel to the spindle-head axis of rotation (2), the first indentation (4c, 4d) is of open form.

3. Spindle-head system (18) according to Claim 1 or 2, wherein the spindle-head frame (10) is configured to be placeable so as to be rotatable about the spindle-head axis of rotation (2) relative to the housing outer side (3a) and the first indentation (4c, 4d) is formed in such a way that, in a viewing direction parallel to the spindle-head axis of rotation (2), the first adjustment element (12, 13) is mounted on the spindle-head frame (10) so as to be extendable into the first indentation (4c, 4d) at an initial oblique position in relation to the first indentation (4c, 4d).

4. Spindle-head system (18) according to one of the preceding claims, wherein the cross slide (4) has a second indentation (4c, 4d) for lateral guidance of the second adjustment element (12, 13), the second indentation (4c, 4d) extends parallel to the adjustment direction (5) of the cross slide (4), the second adjustment element (12, 13) is mounted on the spindle-head frame (10) so as to be extendable into the second indentation (4c, 4d), and a maximum depth of the second indentation (4c, 4d) measured perpendicularly to the spindle-head axis of rotation (2) is different from a maximum depth of the first indentation (4c, 4d) measured perpendicularly to the spindle-head axis of rotation (2).

5. Spindle-head system (18) according to one of the preceding claims, wherein the spindle head (9) has an adjustable arresting element (8) for reversibly releasable arresting of the cross slide (4) relative to the spindle-head housing (3) and the spindle-head-adjusting device (1) is formed according to Claim 12.

6. Spindle-head system (18) according to one of the preceding claims, wherein the frame inner region (11) is of continuously open form.

7. Spindle-head system (18) according to one of the preceding claims, wherein at least the first adjustment element (12, 13) is mounted on the spindle-head frame (10) so as to convert a rotational movement into a linear adjusting movement.

8. Spindle-head system (18) according to one of the preceding claims, wherein the first adjustment element (12, 13) and the second adjustment element (12, 13) each have an external thread which is screwed into the spindle-head frame (10), and the direction of rotation of the external thread of the first adjustment element (12, 13) is the same as the direction of rotation of the external thread of the second adjustment element (12, 13).

9. Spindle-head system (18) according to Claim 7 or 8, wherein at least the first adjustment element (12, 13) has a rotary-drive portion (15) for driving the first adjustment element (12, 13) in rotation, and the rotary-drive portion (15) is arranged outside the frame inner region (11) and forms a stop for abutment against a frame outer side (16) of the spindle-head frame (10) in relation to an extension of the first adjustment element (12, 13) into the frame inner region (11).

10. Spindle-head system (18) according to Claim 9, wherein the rotary-drive portion (15) limits a maximum translational adjustment travel of the first adjustment element (12, 13) during extension into the frame inner region (11), and the maximum translational adjustment travel lies in the range from 5 mm to 20 mm.

11. Spindle-head system (18) according to one of the preceding claims, wherein the spindle-head frame (10) is in the form of a continuously open hollowcylinder body (10) extending along a cylinder axis (2), the spindle-head frame (10) is formed so as to surround the frame inner region (11) in an circumferentially closed manner, and at least the first adjustment element (12, 13) is mounted on the spindle-head frame (10) so as to be adjustable perpendicularly to the cylinder axis (2).

12. Spindle-head system (18) according to one of the preceding claims, wherein the spindle-head frame (10) has a continuously open introduction cutout (17) for introduction of an adjustment-tool portion into the frame inner region (11).