Double-station multifunctional machining center

Abstract

The invention relates to the field of machining centers, and particularly discloses a double-station multifunctional machining center which comprises a base, a stand column and a machine head, the base is provided with an extension seat for bearing a double-station driving frame, and the bearing double-station driving frame comprises symmetrically-arranged X-axis composite frames. When the small workpieces are machined in batches, the fixing clamps are used for clamping and fixing the small workpieces, the double-position driving frame is switched to the first station, the two clamps are fixedly arranged on the Y-axis sliding plate, the two sets of sliding saddles operate independently, one set of sliding saddles firstly move to the position below the machine head for machining, and the other set of sliding saddles move to the position below the machine head for machining. One group of saddles move to the edge of the extension seat to clamp and disassemble a workpiece, the other group of saddles move to the edge of the extension seat to clamp and disassemble the workpiece, parallel operation of the two steps of machining and loading and unloading is achieved, after machining is completed, the machined saddles move to the edge of the extension seat, and after clamping on the other group of saddles is completed, the saddles move to the position below a machine head to be machined. The main shaft on the machine head can operate continuously, and the double-station production efficiency is improved.

Description

Technical Field

[0001] This invention relates to machining center technology, specifically a dual-station multi-functional machining center. Background Technology

[0002] As is generally known, a vertical machining center is a CNC machine tool with a vertically set spindle. It has a relatively comprehensive machining range and versatility, and can perform milling, boring and drilling operations by changing different cutting tools on the spindle.

[0003] For example, the utility model patent with application publication number CN221817937U, application publication date October 11, 2024, and title "A Dual-Station Machining Center" includes a base, with fixed columns on both the left and right sides of the base, and a crossbeam connecting the tops of the two fixed columns. Two workpiece seats are arranged on the base between the two fixed columns, and two movable columns are arranged on the base behind the workpiece seats. Two first spindle boxes are arranged on the crossbeam, facing downwards. Each fixed column has a second spindle box facing the workpiece seat, and each movable column has a third spindle box facing forward. The first spindle boxes are used to install grinding heads, milling cutters, or drills, the second spindle boxes are used to install milling cutters or drills, and the third spindle boxes are used to install milling cutters, drills, or boring tools.

[0004] The shortcoming of the existing technology is that a dual-station machining center, which is a machining center with two working areas, can perform machining in two working areas when machining small parts, and continuous operation can improve the working efficiency of the machine tool. However, when two spindles face two stations, the two stations corresponding to the spindles do not operate in parallel during the machining and loading / unloading steps, but are still serial operations. This causes a single spindle to be unable to operate continuously, limiting the overall efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a dual-station, multi-functional machining center to address the aforementioned shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dual-station multi-functional machining center, comprising a base, a column, and a machine head. The base is provided with an extension seat supporting a dual-station drive frame. The dual-station drive frame includes symmetrically arranged X-axis composite frames and two slide saddles disposed between the two X-axis composite frames. A Y-axis slide plate with a rotating groove is movably disposed on each slide saddle. A clamp is rotatably or fixedly connected to the rotating groove. The dual-station drive frame has the following two stations:

[0007] First station: The two clamps are fixedly mounted on the Y-axis slide plate, and the two sets of slide saddles operate independently;

[0008] Second station: The two fixtures are rotatably connected to the rotating groove and hold the large workpiece. The two sets of sliding saddles work together to make the large workpiece rotate in the plane formed by the X-axis and Y-axis.

[0009] As a further description of the above technical solution: the sliding saddle includes an upper saddle frame and a lower saddle frame that are fixedly connected to each other. An X-axis lead screw is provided inside the X-axis composite frame. A connecting sleeve that cooperates with the X-axis lead screw is provided on the lower saddle frame. The opposite end of the lower saddle frame is slidably connected to the top of the X-axis composite frame.

[0010] As a further description of the above technical solution: the two ends of the extension seat extend out of the base, so that the sliding saddle moves out of the base.

[0011] As a further description of the above technical solution: a main shaft is provided on the machine head, and the X-axis composite frame and the slide saddle are arranged symmetrically around the central axis of the main shaft.

[0012] As a further description of the above technical solution: it also includes a back gap compensation mechanism, which includes two compensation sleeves slidably connected within the connecting sleeve, and a tensioning member is provided between the two compensation sleeves. The tensioning member pushes the two compensation sleeves away from each other to eliminate the back gap.

[0013] As a further description of the above technical solution: both the X-axis lead screw and the compensation sleeve are provided with helical grooves, and ball bearings are arranged between the helical grooves. The two helical grooves move alternately to fit the ball bearings.

[0014] As a further description of the above technical solution: the tensioning member pressurizes one of the compensation sleeves as the sliding saddle moves.

[0015] As a further description of the above technical solution: the tensioning member is rotatably connected to the connecting sleeve, the tensioning member is provided with a lever plate, and the X-axis composite frame is provided with a rib plate corresponding to the lever plate inside.

[0016] As a further description of the above technical solution: both ends of the connecting sleeve are provided with sealing caps, and a spring is provided between them.

[0017] As a further description of the above technical solution: the extension seat has an inclined feeding surface, and the feeding surface faces the X-axis composite frame at a higher position.

[0018] In the above technical solution, the dual-station multi-functional machining center provided by the present invention has the following beneficial effects: When batch processing small workpieces, a fixed fixture is used to clamp and fix the small workpieces, and the dual-position drive frame is switched to the first station. The two fixtures are fixedly set on the Y-axis slide plate, and the two sets of slide saddles operate independently. One set of slide saddles first moves to the bottom of the machine head for processing, while the other set of slide saddles moves to the edge of the extension seat for workpiece clamping and unloading, realizing the parallel operation of the two steps of processing and loading / unloading. After processing is completed, the processed slide saddle is moved to the edge of the extension seat, and the other set of slide saddles, after being clamped, moves to the bottom of the machine head for processing, so that the spindle on the machine head can run continuously, improving the production efficiency of the dual station. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the dual-position drive frame provided in an embodiment of the present invention;

[0022] Figure 3 This is an exploded view of the structure of the dual-position drive frame provided in an embodiment of the present invention;

[0023] Figure 4 This is an exploded view of the X-axis composite frame provided in an embodiment of the present invention;

[0024] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0025] Figure 6 This is a schematic cross-sectional view of the dual-position drive frame provided in an embodiment of the present invention;

[0026] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0027] Figure 8 for Figure 7 Enlarged view of point C in the middle;

[0028] Figure 9 This is a schematic cross-sectional view of the overall structure provided in an embodiment of the present invention;

[0029] Figure 10 for Figure 9Enlarged diagram of point D in the middle.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Column; 11. Base; 12. Extension seat; 121. Feeding surface; 13. Machine head; 2. Dual-position drive frame; 21. X-axis composite frame; 211. X-axis guide rail; 212. Rib plate; 22. X-axis lead screw; 221. Spiral groove; 3. Saddle; 30. Y-axis lead screw; 31. Upper saddle frame; 32. Lower saddle frame; 321. Extension plate; 33. Y-axis guide rail; 34. Y-axis slide plate; 341. Connecting rod; 342. Clamp; 343. Rotary groove; 4. Backlash compensation mechanism; 40. Tensioning element; 401. Pulley; 402. Fitting part; 41. Connecting sleeve; 411. Through groove; 42. Compensating sleeve; 421. Sliding protrusion; 43. Sealing cover; 431. Spring; 44. Ball bearing. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] Please see Figure 1-10 The present invention provides a technical solution: a dual-station multi-functional machining center, such as... Figure 1 As shown, the machine includes a base 11, a column 1, and a head 13. The head 13 is equipped with a spindle for clamping and rotating cutting tools for machining. A lead screw is mounted on the column 1. The head 13 is slidably connected to the column 1 and driven by the lead screw to move along the Z-axis to cut the workpiece. The base 11 is connected to the column 1. An extension seat 12 is mounted on the base 11. The extended design of the extension seat 12 in the X-axis direction is used to support a long dual-position drive frame 2 in the X-axis direction. The dual-position drive frame 2 includes X-axis composite frames 21 located at both ends of the extension seat 12 in the Y-axis direction. Figure 1 and Figure 2As shown, two sliding saddles 3 are slidably connected between the two X-axis composite frames 21. The sliding saddles 3 are used to support the Y-axis slide plate 34. The Y-axis slide plate 34 has a rotating groove 343, and the rotating groove 343 is equipped with a clamp 342. The clamp 342 is divided into a rotating clamp 342 and a fixed clamp 342. During operation, the clamp 342 is selected according to the size of the workpiece and the requirements. When batch processing small workpieces, the fixed clamp 342 is used to clamp and fix the small workpieces, and the dual-position drive frame 2 is switched to the first position. The two clamps 342 are fixed. The two sets of sliding saddles 3 are fixed on the Y-axis slide plate 34 and operate independently. One set of sliding saddles 3 first moves to the bottom of the machine head 13 for processing, while the other set of sliding saddles 3 moves to the edge of the extension seat 12 for workpiece clamping and unloading, realizing parallel operation of processing and loading / unloading. After processing, the processed sliding saddle 3 is moved to the edge of the extension seat 12, while the other set of sliding saddles 3, after being clamped, moves to the bottom of the machine head 13 for processing, allowing the spindle on the machine head 13 to run continuously, improving the production efficiency of the dual-station. When processing large workpieces, the rotary fixture 342 is rotatably connected to the rotary groove 343, driving the two sliding saddles 3 to move closer to the machine head 13. The large workpiece is clamped by the two rotary fixtures 342. When driving the large workpiece for X-axis and Y-axis drive, the two sliding saddles 3 are driven synchronously by two sets of drive sources, reducing the load on a single set of drive sources. In special cases where it is necessary to rotate the large workpiece, the two Y-axis slide plates 34 move in coordination, allowing the large workpiece to rotate in the plane formed by the X-axis and Y-axis.

[0034] In another embodiment provided by the present invention, such as Figure 3 As shown, the sliding saddle 3 includes an upper saddle frame 31 and a lower saddle frame 32 that are fixedly connected to each other. An X-axis lead screw 22 is rotatably connected inside the X-axis composite frame 21. The part of the X-axis lead screw 22 that extends out of the X-axis composite frame 21 is connected to a servo motor via a coupling. A connecting sleeve 41 and an extension plate 321 are respectively provided at both ends of the lower saddle frame 32. The connecting sleeve 41 is provided on the X-axis lead screw 22. The extension plate 321 is slidably connected to the top of the X-axis composite frame 21. The lower saddle frame 32 can slide along the two X-axis composite frames 21. A Y-axis lead screw 30 is provided on the lower saddle frame 32. The upper saddle frame 31 is fixedly connected to the lower saddle frame 32 by screws. A Y-axis guide rail 33 is provided on the upper saddle frame 31. A Y-axis slide plate 34 is slidably connected to the Y-axis guide rail 33. A connecting rod 341 is provided on the Y-axis slide plate 34. A lead screw sleeve is provided on the connecting rod 341. The lead screw sleeve is provided on the Y-axis lead screw 30. The Y-axis lead screw 30 is connected to the servo motor. The X-axis composite frame 21 is provided with an X-axis guide rail 211, and the extension plate 321 is slidably connected to the X-axis guide rail 211.

[0035] In another embodiment of the present invention, the extension seat 12 extends out of the base 11 at both ends, so that the slide saddle 3 moves out of the base 11. The extension seat 12 is a wide-body design, and the base 11 is covered with a frame. The frame intercepts the flying debris caused by cutting. The extension seat 12 extends out of the frame, which facilitates loading and unloading.

[0036] In another embodiment provided by the present invention, such as Figure 1 As shown, a main shaft is provided on the machine head 13. The X-axis composite frame 21 and slide saddle 3 are arranged symmetrically along the central axis of the main shaft. The X-axis composite frame 21 and slide saddle 3 are arranged in a square shape along the central axis to reduce the burden on the base 11 and extension seat 12 in a symmetrical manner. When driving large workpieces for X-axis and Y-axis driving, a symmetrical frame is formed to increase the stability of movement.

[0037] In another embodiment of the present invention, a backlash compensation mechanism 4 is also included. The backlash compensation mechanism 4 includes a connecting sleeve 41 and two compensation sleeves 42 disposed within the connecting sleeve 41. Sliding protrusions 421 are symmetrically arranged on the compensation sleeves 42. The sliding protrusions 421 are slidably connected to the sliding grooves opened on the connecting sleeve 41. A tensioning member 40 is disposed between the compensation sleeves 42. The tensioning member 40 pushes the two compensation sleeves 42 away from each other, thereby eliminating the backlash between the compensation sleeves 42 and the X-axis lead screw 22 and increasing the accuracy during operation.

[0038] Preferred, such as Figure 5 As shown, both the X-axis lead screw 22 and the compensation sleeve 42 are provided with helical grooves 221, and ball bearings 44 are arranged between the helical grooves 221. When the two compensation sleeves 42 move away from each other, as... Figure 8 As shown, the two spiral grooves 221 move alternately to fit the ball 44, thereby eliminating backlash and improving accuracy.

[0039] Preferred, such as Figure 7 As shown, a through groove 411 is provided on the connecting sleeve 41, and the tensioning member 40 is rotatably connected to the through groove 411. A lever 401 is provided on the tensioning member 40, and the lever 401 faces the inner wall of the X-axis composite frame 21. The X-axis composite frame 21 is provided with a rib 212 corresponding to the lever 401. An elastic fitting part 402 is symmetrically provided on the lever 401, and the fitting part 402 corresponds to two compensation sleeves 42 respectively. When the slide saddle 3 moves with the X-axis lead screw 22, the lever 401 is restricted by the rib 212, so that the tensioning member 40 rotates and applies pressure to one of the compensation sleeves 42 through the fitting part 402, and the force to eliminate backlash increases according to the moving direction of the slide saddle 3.

[0040] Preferably, both ends of the connecting sleeve 41 are provided with sealing caps 43, and a spring 431 is provided between them. The spring 431 pushes the two compensation sleeves 42 to fit against the tensioning member 40, so as to provide the compensation sleeves 42 with freedom of movement in two directions and can compensate for back clearance according to the movement direction of the sliding saddle 3.

[0041] In another embodiment of the present invention, the extension seat 12 is provided with an inclined feeding surface 121 and a feeding groove for debris to pass through. The feeding surface 121 is provided on all four sides of the feeding groove. The feeding surface 121 faces the X-axis composite frame 21 at a high position, which facilitates the feeding and recycling of waste.

[0042] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A dual-station multi-functional machining center, comprising a base (11), a column (1), and a machine head (13), characterized in that, The base (11) is provided with an extension seat (12) for supporting the dual-position drive frame (2). The dual-position drive frame (2) includes symmetrically arranged X-axis composite frames (21) and two slide saddles (3) arranged between the two X-axis composite frames (21). A Y-axis slide plate (34) with a rotating groove (343) is movably arranged on the slide saddle (3). A clamp (342) is rotatably or fixedly connected to the rotating groove (343). The dual-position drive frame (2) has the following two workstations: First station: The two clamps (342) are fixedly mounted on the Y-axis slide plate (34), and the two sets of slide saddles (3) operate independently; Second station: Two clamps (342) are rotatably connected to the rotating groove (343) and clamp the large workpiece. Two sets of sliding saddles (3) work together to make the large workpiece rotate in the plane formed by the X-axis and Y-axis.

2. The dual-station multi-functional machining center according to claim 1, characterized in that, The sliding saddle (3) includes an upper saddle frame (31) and a lower saddle frame (32) that are fixedly connected to each other. An X-axis lead screw (22) is provided inside the X-axis composite frame (21). A connecting sleeve (41) that cooperates with the X-axis lead screw (22) is provided on the lower saddle frame (32). The opposite end of the lower saddle frame (32) is slidably connected to the top of the X-axis composite frame (21).

3. The dual-station multi-functional machining center according to claim 1, characterized in that, The extension seat (12) extends out of the base (11) at both ends, so that the sliding saddle (3) moves out of the base (11).

4. The dual-station multi-functional machining center according to claim 1, characterized in that, The machine head (13) is provided with a main shaft, and the X-axis composite frame (21) and the slide saddle (3) are arranged symmetrically along the central axis of the main shaft.

5. A dual-station multi-functional machining center according to claim 2, characterized in that, It also includes a back gap compensation mechanism (4), which includes two compensation sleeves (42) slidably connected in the connecting sleeve (41), and a tensioning member (40) is provided between the two compensation sleeves (42). The tensioning member (40) pushes the two compensation sleeves (42) away from each other to eliminate back gap.

6. A dual-station multi-functional machining center according to claim 5, characterized in that, Both the X-axis lead screw (22) and the compensation sleeve (42) are provided with spiral grooves (221), and ball bearings (44) are provided between the spiral grooves (221). The two spiral grooves (221) move alternately to fit the ball bearings (44).

7. A dual-station multi-functional machining center according to claim 5, characterized in that, The tensioner (40) pressurizes one of the compensation sleeves (42) as the slide saddle (3) moves.

8. A dual-station multi-functional machining center according to claim 7, characterized in that, The tensioning member (40) is rotatably connected to the connecting sleeve (41). The tensioning member (40) is provided with a lever plate (401). The X-axis composite frame (21) is provided with a rib plate (212) corresponding to the lever plate (401).

9. A dual-station multi-functional machining center according to claim 5, characterized in that, Both ends of the connecting sleeve (41) are provided with sealing caps (43), and a spring (431) is provided between them.

10. A dual-station multi-functional machining center according to claim 2, characterized in that, An inclined unloading surface (121) is provided on the extension seat (12), and the unloading surface (121) faces the X-axis composite frame (21) at a high position.

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