CN221019980U - A spindle reversing power head device for machining center - Google Patents

Abstract

The utility model belongs to the field of mechanical manufacturing technology, and specifically relates to a spindle reversing power head device for a machining center, which includes three sleeves, three reversing shafts, two bevel gear assemblies, multiple sets of rolling bearings, taper sleeves, back caps, and cutters; the device can be used on a four-axis machining center, combined with an automatic dividing head to clamp the workpiece, to achieve four-axis linkage milling of complex internal cavities, expand the machining range of the machining center, and improve machining accuracy and efficiency. The outstanding advantage of the utility model is that the design is easy to implement, the power head device can enter the inner cavity of the workpiece, and can be used in situations where a four-axis machining center performs four-axis linkage machining on the inner cavity of a workpiece within a certain size range.

Description

A spindle reversing power head device for machining center

Technical Field

The utility model belongs to the technical field of mechanical manufacturing, and in particular relates to a main shaft reversing power head device for a machining center.

Background technique

Although the existing machining center power head device can enter the inner cavity of the workpiece for processing, it is impossible to use a horizontal automatic dividing head on a four-axis machining center to achieve four-axis linkage processing of the inner cavity of the workpiece.

Utility Model Content

1. Technical issues to be resolved

The technical problem to be solved by the utility model is: how to use a horizontal automatic dividing head on a four-axis machining center to realize four-axis linkage machining of a workpiece inner cavity.

(II) Technical solution

In order to solve the above technical problems, the utility model provides a machining center spindle reversing power head device, the power head device comprising: a first reversing sleeve (1), a first reversing shaft (2), a first rolling bearing (3), a first sleeve (4), a second reversing shaft (5), a second rolling bearing (6), a first bevel gear assembly (7), a hexagon socket head screw (9), a first screw plug (10), a third rolling bearing (11), a hexagon socket head shoulder screw (12), a pin (13), a second reversing sleeve (14), a fourth rolling bearing (15), a second bevel gear assembly (16), a third reversing shaft (17), a second screw plug (18), a fifth rolling bearing (19), a third screw plug (20), a taper sleeve (21), a back cap (22), a tool (23), and a third reversing sleeve (24);

The power head device is reversed through two sets of bevel gear assemblies, so that the center of the tool is offset from the center of the machine tool power shaft by a certain distance, so that the horizontal extension part of the power head can drive the cutting tool (23) to extend into the inner cavity of the workpiece;

The first reversing shaft (2) is matched with the inner conical surface of the main spindle power head of the machining center and is tightened by bolts; one end of the first reversing shaft (2) is rotated by the main spindle power key, and the other end is provided with a step shaft and a first bevel gear assembly (7); the step shaft is provided with two step parts at the front and rear, and the two step parts are respectively provided with a first rolling bearing (3) and a third rolling bearing (11), which are matched with the first reversing sleeve (1), and the first screw plug (10) is connected to fix the third rolling bearing (11) through a threaded connection; the third reversing sleeve (24) extending in a direction perpendicular to the first reversing sleeve (1) at 90 degrees is connected to the first reversing sleeve (1) as a whole by a plurality of hexagon socket head screws (9);

A second rolling bearing (6) arranged at the front and rear ends of the second reversing shaft (5), a first shaft sleeve (4) sleeved on the second reversing shaft (5), and the second reversing shaft (5) are connected to the first reversing shaft (2) through a first bevel gear assembly (7) to transmit power;

The second reversing sleeve (14) is connected to the third reversing sleeve (24) via a plurality of hexagon socket head shoulder screws (12); the fourth rolling bearing (15), the fifth rolling bearing (19) and the third reversing shaft (17) are connected to the second reversing sleeve (14) via a second screw plug (18) and a third screw plug (20) respectively; the tool (23) is connected to the end of the third reversing shaft (17) via a tapered sleeve (21) and a back cap (22);

The second reversing shaft (5) is connected to the third reversing shaft (17) via the second bevel gear assembly (16) to transmit power;

The axis of the second reversing shaft (5) is perpendicular to the axis of the first reversing shaft (2); the axis of the second reversing shaft (5) is perpendicular to the axis of the third reversing shaft (17); and the axis of the first reversing shaft (2) is parallel to the axis of the third reversing shaft (17).

Wherein, the hexagon socket head shoulder screws (12) are provided in four numbers.

The second reversing sleeve (14) and the third reversing sleeve (24) are aligned and connected by four hexagon socket head shoulder screws (12) evenly distributed circumferentially on the butt end faces, which play a role in precise positioning and tightening. Through assembly adjustment, the tool (23) can be rotated 90°, 180°, and 270° in the original position, and located at the bottom, left, top, and right positions, respectively, to meet processing requirements.

The first bevel gear assembly (7) and the second bevel gear assembly (16) respectively perform 90-degree reversal on force transmission.

The first bevel gear assembly (7) transmits the force of the vertically arranged first reversing shaft (2) to the horizontally arranged second reversing shaft (5).

The power of the machine tool spindle is transmitted twice through the reversal of the first bevel gear assembly (7) and the second bevel gear assembly (16), and the axis of the tool (23) can still remain parallel to the axis of the spindle and can penetrate into the inner cavity of the workpiece. Through the automatic indexing head rotation program setting, four-axis linkage cutting processing of the inner cavity of the workpiece is realized.

The back of the first bevel gear assembly (7) is formed with an opening, and a blocking piece (8) is provided to block the opening through a threaded connection.

The device further comprises four locking screws (25); four locking screws (25) are arranged around the outside of the power head device for fine-tuning the power guide of the power head device to be parallel to the spindle guide surface; the machining center uses the power head device to realize parallel conversion of the vertical power of the spindle.

Wherein, the device further comprises a pin (13);

The pin (13) fixes the third reversing shaft (17) to facilitate the back cap (22) to lock the tool (23), which can be removed after locking.

Wherein, the hexagon socket head screws (9) are provided in 7 numbers.

(III) Beneficial effects

Compared with the prior art, the utility model provides a machining center spindle reversing power head device that can be combined with an automatic dividing head to clamp the workpiece on a four-axis machining center, so as to realize four-axis linkage milling processing of complex internal cavities, expand the machining range of the machining center, and improve the machining accuracy and efficiency. The outstanding advantage of the utility model is that the design scheme is easy to implement, the power head device can enter the inner cavity of the workpiece, and can be generally used in the occasions where the four-axis machining center performs four-axis linkage processing on the inner cavity of the workpiece within a certain size range. By adopting this power head, the workpiece can be clamped on the four-axis machining center in combination with an automatic dividing head, so as to realize four-axis linkage milling processing of complex internal cavities, expand the machining range of the machining center, and improve the machining accuracy and efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front view of a spindle reversing power head device of a machining center.

FIG. 2 is a bottom view of a spindle reversing power head device of a machining center.

FIG. 3 is a top view of a spindle reversing power head device of a machining center.

Fig. 4 is a cross-sectional view of a spindle reversing power head device of a machining center along the line A-A.

Fig. 5 is a B-B sectional view of a spindle reversing power head device of a machining center.

FIG. 6 is a partial enlarged view of a spindle reversing power head device of a machining center.

Detailed ways

In order to make the purpose, content, and advantages of the utility model clearer, the specific implementation methods of the utility model are further described in detail below in conjunction with the drawings and embodiments.

In order to solve the above technical problems, the utility model provides a machining center spindle reversing power head device, the power head device comprising: a first reversing sleeve (1), a first reversing shaft (2), a first rolling bearing (3), a first sleeve (4), a second reversing shaft (5), a second rolling bearing (6), a first bevel gear assembly (7), a plug (8), a hexagon socket head screw (9), a first screw plug (10), a third rolling bearing (11), a hexagon socket head shoulder screw (12), a pin (13), a second reversing sleeve (14), a fourth rolling bearing (15), a second bevel gear assembly (16), a third reversing shaft (17), a second screw plug (18), a fifth rolling bearing (19), a third screw plug (20), a taper sleeve (21), a back cap (22), a tool (23), and a third reversing sleeve (24);

The power head device is reversed through two sets of bevel gear assemblies, so that the center of the tool is offset from the center of the machine tool power shaft by a certain distance, so that the horizontal extension part of the power head can drive the cutting tool (23) to extend into the inner cavity of the workpiece;

The first reversing shaft (2) is matched with the inner conical surface of the main spindle power head of the machining center and is tightened by bolts; one end of the first reversing shaft (2) is rotated by the main spindle power key, and the other end is provided with a step shaft and a first bevel gear assembly (7); the step shaft is provided with two step parts at the front and rear, and the two step parts are respectively provided with a first rolling bearing (3) and a third rolling bearing (11), which are matched with the first reversing sleeve (1), and the first screw plug (10) is connected to fix the third rolling bearing (11) through a threaded connection; the third reversing sleeve (24) extending in a direction perpendicular to the first reversing sleeve (1) at 90 degrees is connected to the first reversing sleeve (1) as a whole by a plurality of hexagon socket head screws (9);

A second rolling bearing (6) arranged at the front and rear ends of the second reversing shaft (5), a first shaft sleeve (4) sleeved on the second reversing shaft (5), and the second reversing shaft (5) are connected to the first reversing shaft (2) through a first bevel gear assembly (7) to transmit power;

The second reversing sleeve (14) is connected to the third reversing sleeve (24) via a plurality of hexagon socket head shoulder screws (12); the fourth rolling bearing (15), the fifth rolling bearing (19) and the third reversing shaft (17) are connected to the second reversing sleeve (14) via a second screw plug (18) and a third screw plug (20) respectively; the tool (23) is connected to the end of the third reversing shaft (17) via a tapered sleeve (21) and a back cap (22);

The second reversing shaft (5) is connected to the third reversing shaft (17) via the second bevel gear assembly (16) to transmit power;

The axis of the second reversing shaft (5) is perpendicular to the axis of the first reversing shaft (2); the axis of the second reversing shaft (5) is perpendicular to the axis of the third reversing shaft (17); and the axis of the first reversing shaft (2) is parallel to the axis of the third reversing shaft (17).

Wherein, the hexagon socket head shoulder screws (12) are provided in four numbers.

Among them, the second reversing sleeve (14) and the third reversing sleeve (24) are aligned, and the two are connected by four hexagon socket head shoulder screws (12) evenly distributed circumferentially on the butt end faces, which play a role in precise positioning and tightening. As shown in Figure 4, through assembly adjustment, the tool (23) can be rotated 90°, 180°, and 270° in the original position, and are located at the bottom, left, top, and right positions respectively, to meet processing requirements.

The first bevel gear assembly (7) and the second bevel gear assembly (16) respectively perform 90-degree reversal on force transmission.

The first bevel gear assembly (7) transmits the force of the vertically arranged first reversing shaft (2) to the horizontally arranged second reversing shaft (5).

The power of the machine tool spindle is transmitted twice through the reversal of the first bevel gear assembly (7) and the second bevel gear assembly (16), and the axis of the tool (23) can still remain parallel to the axis of the spindle and can penetrate into the inner cavity of the workpiece. Through the automatic indexing head rotation program setting, four-axis linkage cutting processing of the inner cavity of the workpiece is realized.

The back of the first bevel gear assembly (7) is formed with an opening, and a blocking piece (8) is provided to block the opening through a threaded connection.

The device further comprises four locking screws (25); four locking screws (25) are arranged around the outside of the power head device for fine-tuning the power guide of the power head device to be parallel to the spindle guide surface; the machining center uses the power head device to realize parallel conversion of the vertical power of the spindle.

Wherein, the device further comprises a pin (13);

The pin (13) fixes the third reversing shaft (17) to facilitate the back cap (22) to lock the tool (23), which can be removed after locking.

Wherein, the hexagon socket head screws (9) are provided in 7 numbers.

The steps for using the spindle reversing power head device of the machining center are as follows:

Step 1: By connecting the four hexagon socket head shoulder screws (12) of the second reversing sleeve (14) and the third reversing sleeve (24), the second reversing sleeve (14) is positioned and tightened, so that the tool (23) can be rotated 90°, 180°, 270° at the original position. The tool (23) can be rotated 90°, 180°, 270° at the original position and located at the lower, left, upper, right and other positions respectively to meet the processing requirements.

Step 2: Fix the third reversing shaft (17) with the pin (13), select a suitable milling cutter or drill bit and put it into the position of the tool (23), lock the tool (23) with the back cap (22), and remove the pin (13) after locking.

Step 3: Connect the power head device to the main shaft of the four-axis machining center, and use four locking screws (25) to fine-tune the power guide of the power head device to be parallel to the main shaft guide surface.

Step 4: The CNC dividing head clamps the workpiece, inserts the power head device into the workpiece cavity, aligns, programs, and performs four-axis linkage cutting.

Example 1

This embodiment uses a tool taper shank of a machining center power head and an external shell that can be positioned and fixed on the main shaft jacket of a machine tool to make a double reversing power transmission tool device, so that the actual tool center is offset from the center of the main shaft power head by a certain distance, so that the horizontal extension of the power head can drive the cutting tool to extend into the inner cavity of the workpiece, as shown in Figure 1. The milling cutter or drill bit is clamped on the power output end of the tool device, and the workpiece is clamped on the horizontal automatic dividing head of the machining center, and the tool device can be extended into the inner cavity of the workpiece for milling. At the same time, through the automatic dividing head rotation program setting, four-axis linkage cutting processing of the inner cavity of the workpiece can be realized. In addition, the tool clamping front end of the power head device can adjust and change the direction of the cutting tool axis to facilitate milling processing in various states.

As shown in Figures 1 to 6, firstly, a vertical first reversing shaft (2) is made to match with the power head of the machining center. One end of the first reversing shaft (2) can match with the inner cone of the main spindle power head, and the other end is a stepped shaft connected to the first bevel gear assembly (7). Two rolling bearings, namely the first rolling bearing (3) and the third rolling bearing (11), are installed on the stepped shaft for assembling the first reversing sleeve (1). The first reversing sleeve (1) can rotate freely relative to the first reversing shaft (2). In addition, a horizontal third reversing sleeve (24) and a second reversing shaft (5) containing a double-headed bevel gear are made to be connected with the first reversing shaft (2) containing a tapered handle body, so that the main spindle power shaft becomes a horizontal power shaft. Finally, a front end transmission component with a tool chuck, namely the second reversing sleeve (14), is made. Through the second bevel gear assembly (16), it is connected to the third reversing sleeve (24) to transmit the power reversal to the tool chuck. At the same time, the front end power component, namely the second reversing sleeve (14), can rotate relative to the third reversing sleeve (24) for positioning and reversing. This power head device that has undergone two reversals is installed on a four-axis machining center, and is used in conjunction with a four-axis automatic indexing head to clamp the workpiece. At the same time, through program settings, four-axis linkage cutting processing of the workpiece's internal cavity can be achieved.

The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims (10)

1. A machining center spindle reversing power head device, characterized in that the power head device comprises: the novel reversing shaft comprises a first reversing shaft sleeve (1), a first reversing shaft (2), a first rolling bearing (3), a first shaft sleeve (4), a second reversing shaft (5), a second rolling bearing (6), a first bevel gear assembly (7), a hexagon socket head cap screw (9), a first screw plug (10), a third rolling bearing (11), a hexagon socket head cap screw (12), a pin (13), a second reversing shaft sleeve (14), a fourth rolling bearing (15), a second bevel gear assembly (16), a third reversing shaft (17), a second screw plug (18), a fifth rolling bearing (19), a third screw plug (20), a taper sleeve (21), a back cap (22), a cutter (23) and a third reversing shaft sleeve (24);

The power head device is reversed through the two groups of bevel gear assemblies, so that the center of the cutter is offset from the center of a power shaft of the machine tool by a certain distance, and the horizontal extension part of the power head can drive the cutting cutter (23) to extend into the inner cavity of the workpiece;

The first reversing shaft (2) is matched with the inner conical surface of the main shaft power head of the machining center and is tensioned by a bolt; one end of the first reversing shaft (2) rotates through a main shaft power key, the other end of the first reversing shaft is provided with a step shaft and a first bevel gear assembly (7), two step parts are arranged in front of and behind the step shaft, a first rolling bearing (3) and a third rolling bearing (11) are respectively arranged on the two step parts, the first rolling bearing and the third rolling bearing are matched with the first reversing shaft sleeve (1), and the first plug (10) is fixedly connected with the third rolling bearing (11) through threads; the extension direction of the third reversing shaft sleeve (24) is vertical to the first reversing shaft sleeve (1) by 90 degrees, and the third reversing shaft sleeve and the first reversing shaft sleeve (1) are connected into a whole through a plurality of hexagon socket head cap screws (9);

The second rolling bearings (6) are arranged at the front end and the rear end of the second reversing shaft (5), the first shaft sleeve (4) is sleeved on the second reversing shaft (5), and the second reversing shaft (5) is connected with the first reversing shaft (2) through the first bevel gear assembly (7) to transmit power;

The second reversing shaft sleeve (14) is connected with the third reversing shaft sleeve (24) into a whole through a plurality of hexagon socket head cap shoulder screws (12), the fourth rolling bearing (15), the fifth rolling bearing (19) and the third reversing shaft (17) are respectively connected with the second reversing shaft sleeve (14) into a whole through a second plug (18) and a third plug (20), and the cutter (23) is connected with the end part of the third reversing shaft (17) into a whole through a taper sleeve (21) and a back cap (22);

The second reversing shaft (5) is connected with a third reversing shaft (17) through a second bevel gear assembly (16) to transmit power;

The axis of the second reversing shaft (5) is perpendicular to the axis of the first reversing shaft (2); the axis of the second reversing shaft (5) is perpendicular to the axis of the third reversing shaft (17); the axis of the first reversing shaft (2) is parallel to the axis of the third reversing shaft (17).

2. Machining center spindle reversing power head device according to claim 1, characterized in that the number of hexagon socket head cap shoulder screws (12) is 4.

3. The spindle reversing power head device of the machining center according to claim 2, wherein the second reversing shaft sleeve (14) and the third reversing shaft sleeve (24) are aligned, are connected through 4 hexagonal socket head cap shoulder screws (12) circumferentially distributed on the abutting end face, play a role in accurate positioning and tensioning, and enable the cutter (23) to rotate 90 degrees, 180 degrees and 270 degrees in situ through assembly adjustment, and are respectively located at the lower, left, upper and right positions so as to meet machining requirements.

4. Machining center spindle reversing power head device according to claim 1, characterized in that the first bevel gear assembly (7) and the second bevel gear assembly (16) each reverse the transmission of force by 90 degrees.

5. Machining center spindle reversing power head device according to claim 1, characterized in that the first bevel gear assembly (7) transfers the force of a vertically arranged first reversing shaft (2) to a horizontally arranged second reversing shaft (5).

6. A machining center spindle reversing power head device according to claim 3, characterized in that the power of the machine tool spindle is transferred through the reversing of the first bevel gear assembly (7) and the second bevel gear assembly (16) twice, the axis of the cutter (23) can still be kept parallel to the axis of the spindle, and can be detected into the inner cavity of the workpiece, and the four-axis linkage cutting machining of the inner cavity of the workpiece is realized through the setting of an automatic dividing head rotating program.

7. Machining center spindle reversing power head device according to claim 1, characterized in that the back of the first bevel gear assembly (7) is formed with an opening, and that a blocking piece (8) is provided to block the opening by means of a threaded connection.

8. A machining center spindle reversing power head device according to claim 1, characterized in that the device further comprises 4 locking screws (25); and 4 locking screws (25) are arranged on the periphery of the outer part of the power head device and used for finely adjusting the parallel of the power guide surface and the main shaft guide surface of the power head device, and the machining center uses the power head device to realize the parallel conversion of the vertical power of the main shaft.

9. Machining center spindle reversing power head device according to claim 1, characterized in that the device further comprises a pin (13);

The pin (13) is used for fixing the third reversing shaft (17) so as to be beneficial to locking the cutter (23) by the back cap (22), and the cutter is taken down after locking.

10. Machining center spindle reversing power head device according to claim 1, characterized in that the number of hexagon socket head cap screws (9) is 7.