Machining device and machining method for swing head spindle box

Abstract

The swing head spindle box machining device comprises a first-order tool and a second-order tool, and the first-order tool comprises a first supporting table and a second supporting table; the supporting column and the three adjusting columns are symmetrically arranged at the four corners of the top face of the first supporting table; the clamping columns are symmetrically arranged on the top face of the first supporting table and tightly attached to the three adjacent side walls of the base. The position adjusting column is arranged near the remaining side wall; the position adjusting tool is sleeved on the position adjusting column; the four pressing plates are tightly attached to the top surface of the base and protrude relative to the bearing shell; through the arrangement of the first-order tool, adjustment of the blank column piece is facilitated, meanwhile, a datum plane in the follow-up procedure is conveniently machined in the first order, and therefore the machining efficiency is improved. Wherein the'one-fixed and three-movable 'clamping columns and the position adjusting columns which are used for leveling can enable a blank column piece to be located on the horizontal plane, three-point positioning is achieved through locking bolts located in leveling threaded holes in the two sides and locking bolts located on the clamping columns on the other opposite side, and the box body is located at the axis position of a machining center.

Description

Technical Field

[0001] The present application belongs to the technical field of swing head spindle box processing, and relates to a swing head spindle box processing device and a swing head spindle box processing method. Background Art

[0002] The swing head spindle box is a key component in CNC machine tools. It uses a complex transmission system and indexing system to realize the swing of the spindle in the A-axis and C-axis directions, thereby meeting the processing requirements of complex workpieces.

[0003] In order to ensure the verticality and coaxiality of the swing head and the spindle box, and at the same time ensure the normal operation of the swing head spindle box, it is necessary to improve the processing accuracy of each surface of the swing head spindle box, and at the same time, it is necessary to process complex cooling medium circulation channels.

[0004] In the existing technology, a horizontal machining center is used to process the swing head spindle box. Due to the large size of the horizontal machining center, it is inefficient to place smaller workpieces such as the swing head spindle box into the horizontal machining center for processing. At the same time, the horizontal machining center takes a long time to process deep holes with special angles required in the cooling medium circulation path. Summary of the Invention

[0005] The technical problem to be solved by the present application is to provide a swing head spindle box processing device to reduce the difficulty of installing and positioning the swing head spindle box and improve the positioning accuracy.

[0006] Another technical problem to be solved by the present application is to provide a method for efficiently processing a swing head spindle box using the above-mentioned processing device.

[0007] Firstly, the technical theme of providing a swing head spindle box processing device to reduce the difficulty of installing and positioning the swing head spindle box and improve the positioning accuracy is as follows: The purpose of the present invention is to solve the problem of low positioning efficiency when a swing head spindle box is installed on a horizontal machining center and a five-axis cradle machining center in the prior art.

[0008] In order to achieve the above-mentioned purpose, the present application proposes a swing head spindle box processing device, which is set between the swing head spindle box and the work table of the machining center, wherein the spindle box includes: A base; a first axial hole passing through the base; a box body disposed on the top of the base; an inner cylinder sleeve passing through the front and rear end surfaces of the box body; a spindle mounting portion disposed on the upper end surface of the box body and a workbench connected to the bottom surface of the base; The swing head spindle box processing device includes: A first-order tooling fixed to a workbench of a horizontal machining center by bolts, wherein the first-order tooling comprises: a first support platform; a support column and three adjustment columns symmetrically arranged at the four corners of the top surface of the first support platform; a clamping column symmetrically arranged on the top surface of the first support platform and closely attached to three adjacent side walls of the base; a positioning column arranged near the remaining side wall; a positioning tooling sleeved on the positioning column and closely attached to the remaining side wall of the base; and four pressure plates closely attached to the protruding portion of the top surface of the base relative to the bearing shell; Second-order tooling for positioning the inner wall of the first shaft hole, the side wall of the box body, and the inner wall of the inner cylinder sleeve; A third-order tooling is used to position the first pin hole and the second pin hole.

[0009] In the existing technology, the positioning of the workpiece in the horizontal machining center is generally achieved through the holes, corners or edges of the machine tool itself, or by using a fixture. When positioning the swing head spindle box blank, these methods are limited by the differences in the processing technology of the blank casting itself, and positioning errors will occur, thereby making the entire blank scrapped in subsequent processing.

[0010] In the swing head spindle box processing device of the present application, the first-order tooling is provided to facilitate the adjustment of the blank column, and at the same time, facilitate the processing of the reference surface in the subsequent process in the first order, thereby improving the processing efficiency. Among them, the preset holes on the first support table make the installation of the column fixture more convenient, and the "one dead and three live" clamping column and the adjustment column for leveling can make the blank column on the horizontal plane. At the same time, the locking bolts located in the leveling threaded holes on both sides and the locking bolts located on the clamping column on the opposite side achieve three-point positioning, so that the box body is at the axis position of the machining center, completing the positioning of the box body.

[0011] Furthermore, in order to facilitate cooperation with the third-order tooling, so as to utilize the reference surface processed in the first order to simplify the positioning after the subsequent process, a swing head spindle box processing device includes: four process umbilical legs arranged on the left end face of the box body, wherein, among the four process umbilical legs, the ends of the two process umbilical legs located on a diagonal line are provided with a first pin hole; the ends of the two process umbilical legs located on the other diagonal line are provided with a second pin hole; and the first pin hole is provided with a positioning stop.

[0012] Furthermore, in order to realize the installation of the positioning tool, the positioning tool includes: a leveling baffle, a trapezoidal plate arranged on the widest end face of the leveling baffle; wherein, a mounting hole with a diameter larger than the diameter of the positioning column is opened on the side wall of the trapezoidal plate.

[0013] Furthermore, in order to achieve three-point positioning on the horizontal plane and make the box body be in the axial position of the machining center, leveling threaded holes are symmetrically arranged on the leveling baffle, passing through the top and bottom surfaces; and positioning holes are provided in the axial direction of the clamping column on the other side of the adjustment column, with the leveling threaded holes being in the same horizontal plane.

[0014] Furthermore, in order to facilitate the lifting of the box body and the first-order tooling after installation, ring mounting holes are provided on the top surfaces of the clamping column separated on one side of the base and the adjusting column located on the other side of the base.

[0015] Furthermore, in order to facilitate the installation of the locking bolt, locking bolt installation holes are provided in the axial direction of the clamping column and the adjusting column at the same horizontal position.

[0016] Furthermore, in order to install the swing head spindle box on the workbench of the five-axis cradle machining center and realize the positioning and installation of the swing head spindle box at the same time, the second-order tooling fixed to the workbench of the five-axis cradle machining center by bolts includes: a first clamping column whose side wall is tightly attached to the bottom surface of the base and the left end surface of the box body and the inner wall of the adjacent inner cylinder sleeve; a column arranged in the inner cylinder sleeve and connected to the workbench at one end, extending to the right end surface of the inner cylinder sleeve along the axial direction of the inner cylinder sleeve; a first pressure plate arranged on the top of the column and pressing the end surface of the box body; a second pressure plate pressing the inner wall of the first shaft hole and the inner wall of the spindle mounting part.

[0017] Furthermore, in order to install the swing head spindle box on the horizontal machining center workbench and realize the positioning and installation of the swing head spindle box at the same time, the third-order tooling is fixed to the horizontal machining center workbench by bolts, wherein the third-order tooling includes: one end is fixed to the top surface of the horizontal machining center workbench by bolts, and the other end is connected to the support frame of the process navel leg.

[0018] Furthermore, in order to achieve positioning of two pins on one side and tighten the screws at the same time, the first pin hole is connected to the support frame and the process umbilical leg through a quenched wear-resistant pin sleeve.

[0019] Secondly, a technical theme is to provide a method for efficiently processing a swing head spindle box using the above-mentioned processing device. The present application provides a method for machining a swing head spindle box, which is used to machine various surfaces, low-precision holes and high-precision holes of the box body, wherein: The surfaces include: two end surfaces on the box body perpendicular to the axis of the inner cylinder sleeve, namely the first end surface and the second end surface; a surface of the top surface of the base protruding from the box body and adjacent to the first end surface is the third end surface; the top surface of the main shaft mounting portion is the fourth end surface; a surface provided on the surface where the box body and the base meet and covered by the first shaft hole is the fifth end surface; the inner walls of the inner cylinder sleeve located on both sides of the spiral groove are respectively the sixth end surface and the seventh end surface; an eighth end surface provided on the base on the same side as the second end surface and parallel to the second end surface; The low-precision holes include: a first hole located near the first end surface routing hole; The high-precision holes include: a wiring hole set on the first end face; a second hole penetrating the inner cylinder sleeve and located on both ends of the first and second end faces; a third hole set on the second end face and extending along the axial direction of the inner cylinder sleeve; a fourth hole set on the eighth end face; a fifth hole set on the fifth end face; a sixth hole set on the side of the box body where the process umbilical leg is located and on the other side opposite to the side face; a seventh hole set on the inner wall of the spiral groove and connected to the fifth hole; an eighth hole set on the inner wall of the spiral groove and connected to the third hole; and a ninth hole set on the fourth end face. The steps include: A: Install the first-order tooling on the workbench of the horizontal machining center. After positioning and installing the spindle box casting using the first-order tooling, use the horizontal machining center to roughly machine four process umbilical legs as reference surfaces, and machine the first pin hole and the second pin hole. B: Install the support frame on the workbench of the horizontal machining center, flip the casting of the box body 90° so that the process umbilical leg on the box body is facing the four legs of the support frame, and use hardened wear-resistant pin sleeves to perform two-pin positioning on one side. Machine the first end face and the third end face as the reference for the installation and positioning of the second-order tooling, and machine the first hole on the first end face; C: Install the second support platform on the workbench of the five-axis cradle machining center, install the second-order tooling on the second support platform, and install the box body on the second-order tooling so that the first end face faces the second support platform; use the five-axis cradle machining center to machine high-precision holes, spiral grooves, and the third end face, fourth end face, fifth end face, sixth end face, and seventh end face; D: Install the third-order tooling on the workbench of the horizontal machining center, turn the box body 90 degrees, install the process umbilical leg on the support frame, and perform secondary finishing on the fourth, fifth, sixth and seventh end faces to ensure the verticality and coaxiality between the spindle box and the swing head; E: Turn the box body 90° so that the base is facing the workbench of the horizontal machining center, and use the first-order tooling to install and tighten it. After turning the four exposed process umbilicus legs, grind the end face of the spindle box to complete the processing of the swing head spindle box.

[0020] The beneficial effects of this application are: 1. The present application provides a method for processing a swing head spindle box, which uses a horizontal machining center to preliminarily machine the reference surfaces for installing the second-order tooling and the third-order tooling, and then uses a five-axis cradle machining center to machine high-precision holes, and at the same time performs preliminary rough machining for the fourth-order finishing surface, thereby improving the fourth-order machining efficiency. The present application cooperates with the horizontal machining center and the five-axis cradle machining center, utilizing the higher flexibility and machining accuracy of the five-axis cradle machining center to machine high-precision oil channel holes, thereby improving its machining efficiency while ensuring the final machining accuracy of the swing head spindle box.

[0021] 2. The present application relates to a swing head spindle box processing device, in which four symmetrically arranged process umbilical legs 3 are provided on the box body 2. The process umbilical legs 3 can quickly and conveniently complete rapid positioning, disassembly and installation through the quenched wear-resistant pin sleeve 72 and the support frame 71, thereby simplifying the steps of positioning the swing head spindle box.

[0022] 3. The first-order tooling of the present application realizes the rapid leveling and positioning of the box body 2, wherein an adjusting bolt is provided at the end of the adjusting column. By changing the depth of the adjusting bolt screwed into the adjusting column, the support columns and the adjusting column at the four corners of the bottom of the spindle box casting are in the same horizontal position, thereby completing the leveling; at the same time, three-point positioning is achieved through the locking bolts located in the leveling threaded holes on both sides and the locking bolts located on the clamping column on the opposite side, so that the box body is in the axial position of the machining center, thereby completing the positioning of the box body.

[0023] 4. The third-order tooling of the present application can be used multiple times in different processes for positioning the box body. At the same time, the quenched wear-resistant pin sleeve has good wear resistance and can be used repeatedly.

[0024] 5. The processing method of the swing head spindle box of the present application can use a five-axis cradle machining center to perform rough processing on the key end faces, and then use a horizontal machining center to fine-process these end faces to ensure the verticality and coaxiality between the swing head and the swing head spindle box. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a schematic diagram of the assembly relationship of a swing head spindle box processing device in an embodiment of the present application; Figure 2 This is a schematic diagram of the mechanism of the first-order tooling in the embodiment of the present application; Figure 3 This is a structural diagram of the assembly of the adjustment column and the adjustment tooling in the embodiment of the present application; Figure 4 This is an assembly relationship diagram of the second-order tooling and the box body 2 in the embodiment of the present application; Figure 5 This is a schematic structural diagram of the second-order tooling of an embodiment of the present application; Figure 6 This is an assembly relationship diagram of the third-order tooling and the box body 2 in the embodiment of the present application; Figure 7This is a schematic diagram of the installation of the quenched wear-resistant pin sleeve according to the embodiment of the present application; Figure 8 This is a schematic diagram of the installation position of the quenched wear-resistant pin sleeve according to the embodiment of the present application; Figure 9 This is a schematic diagram of the positions of high-precision holes and surfaces in an embodiment of the present application; Figure 10 This is another schematic diagram of the position of high-precision holes and surfaces according to an embodiment of the present application; Figure 11 This is another schematic diagram of the positions of high-precision holes and surfaces according to an embodiment of the present application; Figure 12 This is another schematic diagram of the position of high-precision holes and surfaces according to an embodiment of the present application; Figure 13 This is another schematic diagram of the position of high-precision holes and surfaces according to an embodiment of the present application; Description of reference numerals: 1. Base; 1001. First axis hole; 2. Box body; 21. Inner cylinder sleeve; 22. Spindle mounting part; 3. Process umbilical leg; 31. First pin hole; 311. Positioning stop; 32. Second pin hole; 4. Workbench; 5. First-order tooling; 51. First support platform; 52. Support column; 53. Adjustment column; 54. Clamping column; 55. Positioning column; 56. Positioning tooling; 561. Leveling baffle; 5611. Leveling threaded hole; 562. Trapezoidal plate; 5621. Mounting hole; 57. Press plate; 58. Lifting ring mounting hole; 59. Positioning hole; 510. Locking bolt mounting hole; 6. Second-order tooling; 61. First clamping column; 62. Vertical column; 63. First pressing plate; 64. Second pressing plate; 65. Second support platform; 7. Third-order tooling; 71. Support frame; 72. Quenched and wear-resistant pin sleeve; 73. Pin; 8, face; 81, first end face; 82, second end face; 83, third end face; 84, fourth end face; 85, fifth end face; 86, sixth end face; 87, seventh end face; 88, eighth end face; 9. Low-precision hole; 91. First hole; 10, high-precision hole; 101, routing hole; 102, second hole; 103, third hole; 104, fourth hole; 105, fifth hole; 106, sixth hole; 107, seventh hole; 108, eighth hole; 109, ninth hole; 11. Spiral groove. DETAILED DESCRIPTION

[0027] The following will be combined with the Figures 1 to 13The embodiments of the technical solution of the present application are described in detail. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application. In addition, the technical features involved in the various embodiments of the present application described below may be combined with each other as long as they do not conflict with each other.

[0028] like Figures 1-3 The present invention illustrates a swing head spindle box processing device, which is set between the swing head spindle box and the work table of the machining center, wherein the spindle box includes: Base 1; first axial hole 1001 penetrating the base 1; box body 2 disposed on the top of the base 1; inner cylinder sleeve 21 penetrating the front and rear end surfaces of the box body 2; spindle mounting portion 22 disposed on the upper end surface of the box body 2 and a workbench 4 connected to the bottom surface of the base 1; Please refer to Figures 1 to 3 , the swing head spindle box processing device includes: A first-order tooling 5 is fixed to the worktable 4 of the horizontal machining center by bolts, wherein the first-order tooling 5 includes: a first support platform 51; a support column 52 and three adjustment columns 53 symmetrically arranged at the four corners of the top surface of the first support platform 51; a clamping column 54 symmetrically arranged on the top surface of the first support platform 51 and closely attached to the three adjacent side walls of the base 1; a positioning column 55 arranged near the remaining side wall; a positioning tooling 56 sleeved on the positioning column 55 and closely attached to the remaining side wall of the base 1; and four pressure plates 57 closely attached to the protruding portion of the top surface of the base 1 compared to the bearing shell 21; Please refer to Figure 2 As a preferred solution, the end of the adjusting bolt provided on the adjusting column 53 that contacts the base 1 can be set to a tapered end, which can reduce the contact area between the adjusting bolt and the base 1. When the adjusting bolt is rotated and leveled, the friction between the adjusting bolt and the base 1 is reduced, thereby improving the accuracy of height adjustment.

[0029] Please continue to refer to Figure 2 As a preferred solution, the middle section of the adjusting bolt can be provided with two holes perpendicular to each other and penetrating the end face of the adjusting bolt in the radial direction. When adjusting the height, the adjusting bolt can be rotated by inserting a rod into the hole. On the one hand, the length of the force arm can be increased, making the rotation more labor-saving. On the other hand, it can avoid the problem that tools such as wrenches interfere with other column parts when rotating the adjusting bolt, making the operation difficult.

[0030] Please refer to Figure 3 Furthermore, the clamping column 54 and the adjusting column 55 are installed in the preset holes on the workbench 4, and the adjusting tool 56 is installed on the adjusting column 55. A groove with the same width as the leveling baffle 561 is provided on the side wall of the adjusting column 55.

[0031] First, fit the mounting hole 5621 on the trapezoidal plate 562 onto the positioning column 55, then insert the end of the leveling baffle 561 into the groove on the positioning column 55, and insert a locking bolt into the positioning hole on the positioning column 55 to complete the preliminary fixation between the positioning tool 56 and the positioning column 55.

[0032] Furthermore, the two locking bolts are screwed into the leveling threaded holes 5611 and initially contact the side end surface of the base; the adjustment column 55 and the locking bolts on the clamping column 54 on the other side of the adjustment column 55 are tightened to achieve the initial positioning of the swing head spindle box. Thereafter, the locking bolts located in the leveling threaded holes 5611 on both sides are adjusted. Thus, the locking bolts located in the leveling threaded holes 5611 on both sides and the locking bolts located on the clamping column 54 on the opposite side achieve three-point positioning, so that the box body 2 is at the axis position of the machining center, completing the positioning of the box body 2. Tighten the locking bolts on the clamping columns 54 on the opposite sides to complete the fixation of the box body 2.

[0033] Second-order tooling 6 for positioning the inner wall of the first shaft hole 1001 and the side wall of the box body 2 and the inner wall of the inner cylinder sleeve 21; The third-order tool 7 is used to position the first pin hole 31 and the second pin hole 32.

[0034] Please continue to refer to Figure 1 A swing head spindle box processing device includes: four process umbilical legs 3 arranged on the left end surface of the box body 2, wherein, among the four process umbilical legs 3, the ends of the two process umbilical legs 3 located on a diagonal line are provided with first pin holes 31; the ends of the two process umbilical legs 3 located on the other diagonal line are provided with second pin holes 32; the first pin hole 31 is provided with a positioning stop 311.

[0035] Specifically, the process umbilical leg 3 serves as an important positioning device of the box body 2 and can cooperate with the support frame 71 to realize rapid positioning of the box body 2. A positioning stop 311 is provided on the first pin hole 31 to better fix the quenched and wear-resistant pin sleeve 72. The quenched and wear-resistant pin sleeve 72 covers the pin 73 to prevent the pin 73 from wearing during the positioning process.

[0036] Please refer to Figure 3 The positioning tooling 56 includes: a leveling baffle 561, and a trapezoidal plate 562 arranged on the widest end surface of the leveling baffle 561; wherein, a mounting hole 5621 with a diameter larger than the diameter of the positioning column 55 is opened on the side wall of the trapezoidal plate 562, and the trapezoidal plate 562 cooperates with the mounting hole 5621 to preliminarily install the positioning tooling 56 on the positioning column 55 to prevent the positioning tooling 56 from slipping.

[0037] Please refer to Figure 2 and Figure 3, leveling threaded holes 5611 are symmetrically provided on the leveling baffle 561, penetrating the top and bottom surfaces; a leveling threaded hole 5611 is provided axially on the clamping column 54 on the other side of the adjustment column 55, and a positioning hole 59 is provided on the same horizontal plane. The two leveling threaded holes 5611 and the positioning hole 59 form a three-point positioning. By fixing the locking bolt at the positioning hole 59 as a fixed point of the three-point support, the leveling threaded holes 5611 at the other two points of the triangle can be adjusted to continuously adjust the angle of the box body 2 on the horizontal plane to achieve leveling.

[0038] Please refer to Figure 2 A lifting ring mounting hole 58 is provided on the top surface of the clamping column 54 on one side of the base 1 and the adjusting column 55 on the other side of the base 1, which is convenient for passing the lifting hoist and the hook through the lifting ring mounting hole 58 to realize the rapid movement of the box body 2.

[0039] Please continue to refer to Figure 2 The clamping column 54 and the adjusting column 55 are axially provided with locking bolt mounting holes 510 at the same horizontal position.

[0040] Please refer to Figure 4~Figure 5 The second-order tooling 6 fixed to the workbench 4 of the five-axis cradle machining center by bolts includes: a first clamping column 61 whose side wall is tightly attached to the bottom surface of the base 1, the left end surface of the box body 2, and the inner wall of the adjacent inner cylinder sleeve 21; a column 62 arranged in the inner cylinder sleeve 21, and one end of which is connected to the workbench 4, extending along the axial direction of the inner cylinder sleeve 21 to the right end surface of the inner cylinder sleeve 21; a first pressure plate 63 arranged on the top of the column 62 and pressing the end surface of the box body 2; a second pressure plate 64 that presses the inner wall of the first axial hole 1001 and the inner wall of the spindle mounting part 22.

[0041] In an embodiment of the present application, three first clamping columns 61 are used to fix the box body 2, one of the first clamping columns 6 is close to the bottom surface of the base 1, and the remaining two first clamping columns 6 respectively clamp the outer wall of the box body 2 and the inner wall of the inner cylinder sleeve 21. The box body 2 can be installed and fixed by inserting the locking bolt into the first clamping column 6 close to the bottom surface of the base 1 and the first clamping column 6 clamping the outer wall of the box body 2.

[0042] Furthermore, the cooperation between the upright column 62 and the first pressing plate 63 can further press the box body 2 and improve the stability of the installation.

[0043] Furthermore, when processing the thread groove 11, the column is installed on the second support platform 65, and then the second pressure plate 64 is installed on the top of the column by bolts, wherein the second pressure plate 64 presses the inner wall of the first axial hole 1001 and the inner wall of the spindle mounting part 22 respectively to avoid shaking of the box body 2 when processing the thread groove 11.

[0044] In further embodiments, please refer to Figure 6 , a third-order tooling 7 is fixed on the workbench 4 of the horizontal machining center by bolts, wherein the third-order tooling 7 includes: one end is fixed to the top surface of the workbench 4 of the horizontal machining center by bolts, and the other end is connected to the support frame 71 of the process umbilical leg 3.

[0045] Please refer to Figure 7 and Figure 8 The first pin hole 31 connects the support frame 71 and the process umbilical leg 3 through the quenched wear-resistant pin sleeve 72, thereby positioning the box body 2 with two pins on one side, and at the same time tightening the screws to complete the fixation between the box body 2 and the support frame 71.

[0046] Example 2 A method for machining a swing head spindle box, used for machining each surface 8, low-precision holes 9 and high-precision holes 10 of the box body 2, wherein: Please refer to Figures 9 to 13 The surface 8 includes: two end surfaces on the box body 2 that are perpendicular to the axis of the inner cylinder sleeve 21, namely a first end surface 81 and a second end surface 82; a surface of the top surface of the base 1 that protrudes compared to the box body 2 and is adjacent to the first end surface 81 is a third end surface 83; the top surface of the main shaft mounting portion 22 is a fourth end surface 84; a surface provided on the surface where the box body 2 and the base 1 meet and covered by the first shaft hole 1001 is a fifth end surface 85; the inner walls of the inner cylinder sleeve 21 located on both sides of the spiral groove 11 are respectively a sixth end surface 86 and a seventh end surface 87; an eighth end surface 88 provided on the base 1 and parallel to the second end surface 82, on the same side as the second end surface 82; The low-precision hole 9 includes: a first hole 91 located near the wiring hole 101 on the first end surface 81; The high-precision holes 10 include: a wiring hole 101 provided on the first end face 81; a second hole 102 penetrating the inner cylinder sleeve 21 and located on both ends of the first end face 81 and the second end face 82; a third hole 103 provided on the second end face 82 and extending axially along the inner cylinder sleeve 21; a fourth hole 104 provided on the eighth end face 88; a fifth hole 105 provided on the fifth end face 85; a sixth hole 106 provided on the side surface of the box body 2 where the process umbilical leg 3 is located and on the other side surface opposite to the side surface; a seventh hole 107 provided on the inner wall of the spiral groove 11 and connected to the fifth hole 105; an eighth hole 108 provided on the inner wall of the spiral groove 11 and connected to the third hole 103; and a ninth hole 109 provided on the fourth end face 84. The steps include: A: Install the first-order tooling 5 on the workbench 4 of the horizontal machining center. After positioning and installing the spindle box casting using the first-order tooling 5, use the horizontal machining center to roughly machine four process umbilical legs 3 as reference surfaces, and machine the first pin hole 31 and the second pin hole 32; B: Install the support frame 71 on the workbench 4 of the horizontal machining center. Turn the casting of the box body 2 90° so that the process umbilical leg 3 on the box body 2 is aligned with the four legs of the support frame 71. Use the quenched and wear-resistant pin sleeve 72 for two-pin positioning. Machine the first end face 81 and the third end face 83 as the reference for the installation and positioning of the second-order tooling 6. Machine the first hole 91 on the first end face 81. C: Install the second support platform 65 on the workbench 4 of the five-axis cradle machining center, install the second-order tooling 6 on the second support platform 65, and install the box body 2 on the second-order tooling 6 so that the first end surface 81 faces the second support platform 65. Use the five-axis cradle machining center to machine the high-precision hole 10; the spiral groove 11; and the third end surface 83; the fourth end surface 84; the fifth end surface 85; the sixth end surface 86; and the seventh end surface 87. D: Install the third-order tooling 7 onto the workbench 4 of the horizontal machining center, flip the box body 2 90°, install the process navel leg 3 onto the support frame 71, and perform secondary finishing on the fourth end face 84, the fifth end face 85, the sixth end face 86, and the seventh end face 87 to ensure the verticality and coaxiality between the spindle box and the swing head; E: Flip the box body 2 90° so that the base 1 faces the workbench 4 of the horizontal machining center, and use the first-order tooling 5 to install and tighten it. After turning the four exposed process umbilical legs 3, grind the end face of the spindle box to complete the processing of the swing head spindle box.

[0047] The above steps A to E are all key steps in this processing method. The entire process of this processing method will be described in detail below: Process 1: Processing process navel leg 3: Specifically, the end faces of the four process umbilical legs 3 are processed, and holes are drilled at the ends of the four process umbilical legs 3, wherein the holes located on a diagonal line are processed into positioning stops 311, and the two holes with positioning stops 311 are called first pin holes 31, and the remaining two holes on the other diagonal line are called second pin holes 32; wherein, the first pin hole 31 with the positioning stop 311 is convenient for cooperation with the third-order tooling 7, and realizes two-pin positioning on one side by cooperating with the quenched and wear-resistant pin sleeve 72, thereby realizing rapid positioning, installation and disassembly.

[0048] Process 2: Processing the reference surface and the hole with low precision requirements on the horizontal machining center to facilitate positioning in the subsequent process: Specifically, the first-order tooling 5 is installed on the workbench 4 of the horizontal machining center.

[0049] First, install the first support platform 51 on the workbench 4. Install a support column 52 and three adjustment columns 53 into the corresponding holes in the workbench 4 using locking bolts. Then, lift the spindle box casting and place it on top of the support column 52 and the three adjustment columns 53. The height of the support column 52 determines the height of the reference horizontal plane. Adjustment bolts are installed at the ends of the adjustment columns 53. By adjusting the depth of the adjustment bolts into the adjustment columns 53, the support columns 52 and adjustment columns 53 at the four corners of the bottom of the spindle box casting are aligned, thus completing leveling.

[0050] Furthermore, the clamping column 54 and the adjusting column 55 are installed in the preset holes on the workbench 4, and the adjusting tool 56 is installed on the adjusting column 55. A groove with the same width as the leveling baffle 561 is provided on the side wall of the adjusting column 55.

[0051] First, fit the mounting hole 5621 on the trapezoidal plate 562 onto the positioning column 55, then insert the end of the leveling baffle 561 into the groove on the positioning column 55, and insert a locking bolt into the positioning hole on the positioning column 55 to complete the preliminary fixation between the positioning tool 56 and the positioning column 55.

[0052] Furthermore, two locking bolts are screwed into the leveling threaded holes 5611 and initially contact the side end surfaces of the base; Further, tighten the adjusting column 55 and the locking bolt on the clamping column 54 on the other side opposite to the adjusting column 55 to achieve preliminary positioning of the swing head spindle box. Thereafter, adjust the locking bolts located in the leveling threaded holes 5611 on both sides. Thus, the locking bolts located in the leveling threaded holes 5611 on both sides and the locking bolts located on the clamping column 54 on the other side achieve three-point positioning, so that the box body 2 is in the axial position of the machining center, and the positioning of the box body 2 is completed.

[0053] Furthermore, the locking bolts on the clamping columns 54 on the opposite sides are tightened to complete the fixation of the box body 2.

[0054] Furthermore, after completing the installation and positioning of the box body 2, a horizontal machining center is used to machine the first end face 81 and the third end face 83 as reference surfaces in subsequent processes, simplifying the positioning steps in subsequent processes; at the same time, a low-precision first hole 91 is drilled on the first end face.

[0055] Process 3: Use the flexibility of the five-axis cradle machine to process holes with high precision requirements, such as oil channel holes, and rough-machine key end faces to improve the efficiency of subsequent horizontal machining center finishing of these faces.

[0056] Specifically, first install the second-order tooling 6 on the five-axis cradle machining center: wherein, install the second support platform 65 on the workbench 4 of the five-axis cradle machining center, install the support frame 71 on the workbench 4 through bolt fasteners, and then complete the connection with the process navel 3 through a quenched wear-resistant pin sleeve.

[0057] Further, the spiral groove 11, the remaining end faces and the high-precision hole 10 are processed. The remaining end faces required are specifically: the fourth end face 84 of the top surface of the main shaft mounting part 22; the fifth end face 85 arranged on the surface where the box body 2 and the base 1 are connected and covered by the first axial hole 1001; the sixth end face 86 and the seventh end face 87 of the inner wall of the inner cylinder sleeve 21 on both sides of the spiral groove 11; the eighth end face 88 arranged on the base 1 on the same side as the second end face 82 and parallel to the second end face 82; the sixth end face 86 and the seventh end face 87 of the inner wall of the inner cylinder sleeve 21 on both sides of the spiral groove 11; among them, the fourth end face 84 of the top surface of the main shaft mounting part 22; the fifth end face 85 arranged on the surface where the box body 2 and the base 1 are connected and covered by the first axial hole 1001 are only preliminarily processed, and 30-50 processing allowances are reserved for the fine processing of process 4.

[0058] The high-precision holes 10 include: a wiring hole 101 provided on the first end face 81; a second hole 102 penetrating the inner cylinder sleeve 21 and located on both ends of the first end face 81 and the second end face 82; a third hole 103 provided on the second end face 82 and extending axially along the inner cylinder sleeve 21; a fourth hole 104 provided on the eighth end face 88; a fifth hole 105 provided on the fifth end face 85; a sixth hole 106 provided on the side surface of the box body 2 where the process umbilical leg 3 is located and on the other side surface opposite to the side surface; a seventh hole 107 provided on the inner wall of the spiral groove 11 and connected to the fifth hole 105; an eighth hole 108 provided on the inner wall of the spiral groove 11 and connected to the third hole 103; and a ninth hole 109 provided on the fourth end face 84. As an optimal solution, the 7Mpa center water outlet technology and HSK63 interface of the five-axis cradle machining center can improve efficiency when gun drilling and prevent the drill bit from breaking.

[0059] As a preferred solution, the thread groove 11 is processed using a 800 cradle machine with a turning function made by Kede CNC Co., Ltd., thereby forming a spiral cooling water channel inside the swing head.

[0060] As a better solution, if the five-axis cradle machine does not have this turning function, it is necessary to use a vertical lathe or a general lathe to process the threaded water channel.

[0061] Process 4: To ensure the perpendicularity and coaxiality between the swing head and the spindle box, key end surfaces need to be fine-machined, including the fourth end surface 84 on the top surface of the spindle mounting portion 22; the fifth end surface 85 located on the surface where the box body 2 and the base 1 meet and covered by the first shaft hole 1001; the sixth end surface 86 and the seventh end surface 87 on the inner wall of the inner cylinder sleeve 21 located on both sides of the spiral groove 11; Step 5: Remove the process navel leg 3.

[0062] Specifically, measure with a small knife, turn any side of the process umbilical leg 3 that is connected to the box body 2, and then knock the process umbilical leg 3 to separate the process umbilical leg 3 from the box body 2, and then grind the part where the box body 2 and the process umbilical leg 3 are connected, and finally complete the processing of the spindle swing head box.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A processing device for a swing head spindle box, which is set between the swing head spindle box and the working table of the machining center, wherein: The spindle box includes: A base (1); a first axial hole (1001) passing through the base (1); a box body (2) disposed on the top of the base (1); an inner cylinder sleeve (21) passing through the front and rear end surfaces of the box body (2); a spindle mounting portion (22) disposed on the upper end surface of the box body (2); and a workbench (4) connected to the bottom surface of the base (1); It is characterized in that the swing head spindle box processing device includes: A first-order tooling (5) fixed to a workbench (4) of a horizontal machining center by bolts, wherein the first-order tooling (5) comprises: a first support platform (51); a support column (52) and three adjustment columns (53) symmetrically arranged at four corners of the top surface of the first support platform (51); a clamping column (54) symmetrically arranged on the top surface of the first support platform (51) and closely attached to three adjacent side walls of the base (1); an adjustment column (55) arranged near the remaining side wall; an adjustment tooling (56) sleeved on the adjustment column (55) and closely attached to the remaining side wall of the base (1); and four pressure plates (57) closely attached to the top surface of the base (1) relative to the protruding portion of the bearing shell (21); A second-order tool (6) for positioning the inner wall of the first shaft hole (1001) and the side wall of the box body (2) and the inner wall of the inner cylinder sleeve (21); A third-order tool (7) for positioning the first pin hole (31) and the second pin hole (32).

2. The processing device of the swing head spindle box according to claim 1 is characterized in that: include: Four process umbilical legs (3) are provided on the left end surface of the box body (2), wherein, among the four process umbilical legs (3), the ends of two process umbilical legs (3) located on one diagonal line are provided with first pin holes (31); the ends of two process umbilical legs (3) located on the other diagonal line are provided with second pin holes (32); and the first pin holes (31) are provided with positioning stoppers (311).

3. The processing device of the swing head spindle box according to claim 1, characterized in that: The positioning tool (56) comprises: a leveling baffle (561), and a trapezoidal plate (562) arranged on the widest end surface of the leveling baffle (561); wherein a mounting hole (5621) having a diameter greater than that of the positioning column (55) is formed on a side wall of the trapezoidal plate (562).

4. The processing device of the swing head spindle box according to claim 1, characterized in that: The leveling baffle (561) is symmetrically provided with leveling threaded holes (5611) penetrating the top surface and the bottom surface; and a positioning hole (59) is provided in the axial direction of the clamping column (54) on the other side of the adjustment column (55) and is located on the same horizontal plane as the leveling threaded holes (5611).

5. The processing device of the swing head spindle box according to claim 1, characterized in that: A lifting ring mounting hole (58) is provided on the top surface of the clamping column (54) located on one side of the base (1) and the adjusting column (55) located on the other side opposite to the base (1).

6. The processing device of the swing head spindle box according to claim 1, characterized in that: The clamping column (54) and the adjusting column (55) are provided with locking bolt mounting holes (510) in the same horizontal position in the axial direction.

7. The processing device of the swing head spindle box according to claim 1, characterized in that: A second-order tooling (6) fixed to the workbench (4) of the five-axis cradle machining center by bolts comprises: a first clamping column (61) whose side wall is closely attached to the bottom surface of the base (1) and the left end surface of the box body (2) and the inner wall of the inner cylinder sleeve (21) adjacent thereto; a column (62) arranged in the inner cylinder sleeve (21) and connected to the workbench (4) at one end, extending along the axial direction of the inner cylinder sleeve (21) to the right end surface of the inner cylinder sleeve (21); a first pressing plate (63) arranged on the top of the column (62) and pressing the end surface of the box body (2); and a second pressing plate (64) pressing the inner wall of the first axial hole (1001) and the inner wall of the spindle mounting portion (22).

8. The processing device of the swing head spindle box according to claim 1, characterized in that: A third-order tooling (7) is fixed to a horizontal machining center workbench (4) by bolts, wherein the third-order tooling (7) includes: one end of which is fixed to the top surface of the horizontal machining center workbench (4) by bolts, and the other end of which is connected to a support frame (71) of the process navel (3).

9. The processing device of the swing head spindle box according to claim 3, characterized in that: The first pin hole (31) is connected to the support frame (71) and the process umbilical leg (3) via a quenched wear-resistant pin sleeve (72).

10. A method for machining a swing head spindle box, used for machining various surfaces (8), low-precision holes (9) and high-precision holes (10) of a box body (2), wherein: The surface (8) includes: two end surfaces on the box body (2) perpendicular to the axis of the inner cylinder sleeve (21), namely the first end surface (81) and the second end surface (82); a surface of the top surface of the base (1) protruding from the box body (2) and adjacent to the first end surface (81) is the third end surface (83); the top surface of the main shaft mounting portion (22) is the fourth end surface (84); a surface provided on the surface where the box body (2) and the base (1) meet and covered by the first shaft hole (1001) is the fifth end surface (85); inner walls of the inner cylinder sleeve (21) located on both sides of the spiral groove (11) are the sixth end surface (86) and the seventh end surface (87); an eighth end surface (88) provided on the base (1) on the same side as the second end surface (82) and parallel to the second end surface (82); The low-precision hole (9) includes: a first hole (91) located near the wiring hole (101) of the first end surface (81); The high-precision hole (10) includes: a wiring hole (101) provided on the first end face (81); a second hole (102) penetrating the inner cylinder sleeve (21) and located at both end faces of the first end face (81) and the second end face (82); a third hole (103) provided on the second end face (82) and extending axially along the inner cylinder sleeve (21); a fourth hole (104) provided on the eighth end face (88); a fifth hole (105) provided on the fifth end face (85); a sixth hole (106) provided on the side face of the box body (2) where the process umbilical leg (3) is located and on the other side face opposite to the side face; a seventh hole (107) provided on the inner wall of the spiral groove (11) and connected to the fifth hole (105); an eighth hole (108) provided on the inner wall of the spiral groove (11) and connected to the third hole (103); and a ninth hole (109) provided on the fourth end face (84). It is characterized by comprising the following steps: A: Install the first-order tooling (5) on the workbench (4) of the horizontal machining center. After positioning and installing the spindle box casting using the first-order tooling (5), use the horizontal machining center to roughly machine four process umbilical legs (3) as reference surfaces, and machine the first pin hole (31) and the second pin hole (32); B: Install the support frame (71) on the workbench (4) of the horizontal machining center, turn the casting of the box body (2) 90 degrees, so that the process umbilical leg (3) on the box body (2) is facing the four legs of the support frame (71), use the quenched wear-resistant pin sleeve (72) to perform one-side two-pin positioning, process the first end face (81) and the third end face (83) as the reference for the installation and positioning of the second-order tooling (6), and process the first hole (91) on the first end face (81); C: Install the second support platform (65) on the workbench (4) of the five-axis cradle machining center, install the second sequence tooling (6) on the second support platform (65), and install the box body (2) on the second sequence tooling (6) so that the first end surface (81) faces the second support platform (65); use the five-axis cradle machining center to machine a high-precision hole (10); a spiral groove (11); and machine a third end surface (83); a fourth end surface (84); a fifth end surface (85); a sixth end surface (86) and a seventh end surface (87); D: Install the third-order tooling (7) on the workbench (4) of the horizontal machining center, turn the box body (2) 90 degrees, install the process navel leg (3) on the support frame (71), and perform secondary finishing on the fourth end face (84), the fifth end face (85), the sixth end face (86) and the seventh end face (87) to ensure the verticality and coaxiality between the spindle box and the swing head; E: Turn the box body (2) 90 degrees so that the base (1) faces the workbench (4) of the horizontal machining center, and then use the first-order tooling (5) to install and tighten it. After turning the four exposed process umbilical legs (3), grind the end face of the spindle box to complete the processing of the swing head spindle box.

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