A dual independent CNC drilling and milling head with adjustable machining angle

Abstract

This invention relates to a dual independent CNC drilling and milling head with adjustable machining angle, comprising a machine base for a CNC drilling and milling machine. Two sets of fixed and movable drilling and milling heads are respectively provided on the front side of the machine base. Both the fixed and movable drilling and milling heads include a housing. The housing of the fixed drilling and milling head is fixedly connected to the machine base. A vertical support seat is fixedly connected to the right side wall of the housing of the fixed drilling and milling head. The movable drilling and milling head is located in front of the support seat and is hinged to the support seat via a hinge bracket. An angle adjustment mechanism is provided on the right side wall of the housing of the movable drilling and milling head. This dual independent CNC drilling and milling head has one set of angle-adjustable heads, which can meet the requirement that both sets of heads can simultaneously process planes at different angles, greatly facilitating the machining of CNC drilling and milling machines.

Description

Technical Field

[0001] This invention relates to the technical field of CNC drilling and milling machine heads, and more specifically to a dual independent CNC drilling and milling machine head with adjustable machining angle. Background Technology

[0002] CNC drilling and milling machines are high-precision CNC machine tools that integrate drilling, milling, and tapping functions. They achieve automated processing through a computer control system and are widely used in modern manufacturing. Currently, small CNC drilling and milling machines are available on the market, resembling existing CNC drilling machines in appearance. These machines typically have a single-head structure, but to achieve synchronous or multi-speed machining, some have multiple independently fed heads. However, the feed direction of these heads is always vertical. For example, when milling a workpiece, the workpiece's machining surface needs to be horizontal. Sometimes, however, the workpiece needs to be machined on multiple planes, such as one horizontal plane and another inclined plane, with the horizontal bottom surface as the machining reference plane. This requires multiple clamping and adjustment of the machining surface positions, which is necessary for existing CNC drilling and milling machines to achieve this. Therefore, some have proposed adjusting the angle of the drilling and milling head to achieve multi-angle plane machining while using the same reference plane as the clamping reference. This necessitates the design of a CNC drilling and milling head with the aforementioned functions. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a dual independent CNC drilling and milling head with adjustable processing angle. The dual independent CNC drilling and milling head is equipped with a set of adjustable-angle heads, which can meet the requirement that the two sets of heads can simultaneously process planes at different angles, greatly facilitating the machining of CNC drilling and milling machines.

[0004] A dual independent CNC drilling and milling head with adjustable machining angle includes a machine base for a CNC drilling and milling machine. Two sets of fixed and movable drilling and milling heads are respectively provided on the front side of the machine base. Both the fixed and movable drilling and milling heads include a housing. A vertical feed sleeve is inserted inside the housing. A drilling and milling spindle is connected to the feed sleeve via a bearing. A clamping head is fixedly connected to the lower end of the drilling and milling spindle. A splined shaft is formed on the upper end of the drilling and milling spindle, extending out of the feed sleeve and passing through a feed bracket. A... The machine has a spline sleeve connected to the housing via bearings; a feed screw is screwed to the feed bracket on the front side of the drilling and milling spindle, with both ends of the feed screw pivotally connected to the housing, the upper end of the feed screw being fixedly connected to the shaft of the feed motor, and the feed motor being fixedly connected to the top of the housing; the housing of the fixed drilling and milling head is fixedly connected to the machine base, and a vertical support is fixedly connected to the right side wall of the housing of the fixed drilling and milling head; the moving drilling and milling head is located in front of the support and is hinged to the support via a hinge bracket.

[0005] An angle adjustment mechanism is provided on the right side wall of the housing of the moving drilling and milling head. The angle adjustment mechanism includes a vertical angle adjustment motor, which is fixedly connected to the upper end seat. A lower end seat is provided below the upper end seat. Both the upper and lower end seats are fixedly connected to the housing of the moving drilling and milling head. A vertical adjustment screw is inserted between the upper and lower end seats. The upper and lower ends of the adjustment screw are pivotally connected to the upper and lower end seats, respectively. The upper end of the adjustment screw is fixedly connected to the rotating shaft of the angle adjustment motor through a coupling.

[0006] The adjusting screw is screwed with a vertical adjusting slide, and a longitudinal connecting arm is fixed to the rear side of the adjusting slide. The rear end of the connecting arm is hinged to a connecting rod via a hinge shaft, and the rear end of the connecting rod is hinged to a positioning ear via a hinge shaft. The positioning ear is fixed to the bearing seat.

[0007] Preferably, the hinge bracket is located on the upper part of the housing of the moving drilling and milling machine head, and the bearing seat is located on the lower side of the hinge bracket;

[0008] The hinged bracket includes a front hinged support and a rear hinged support. The front hinged support and the rear hinged support are respectively fixed to the housing and the bearing seat of the moving drilling and milling head. The front hinged support and the rear hinged support are hinged together by a hinge shaft.

[0009] Preferably, a drilling and milling drive motor is fixedly connected to the top of the base, and two sets of drive pulleys are respectively inserted and fixedly connected to the rotating shaft of the drilling and milling drive motor. A synchronous belt is respectively fitted on the two sets of drive pulleys, and the two sets of drive pulleys are respectively connected to a first synchronous pulley and a second synchronous pulley through the synchronous belt. The second synchronous pulley is inserted and fixedly connected to the upper end of the spline sleeve on the fixed drilling and milling head.

[0010] A vertical connecting shaft is inserted into the first synchronous pulley. The connecting shaft is connected to a support cantilever via a bearing. The rear end of the support cantilever is fixed to the housing of the fixed drilling and milling head. A universal joint is fixedly connected to the lower end of the connecting shaft. A connecting shaft is formed at the lower end of the universal joint. A drive shaft sleeve is inserted and fixed to the upper end of the spline sleeve of the moving drilling and milling head. The connecting shaft of the universal joint is inserted into the drive shaft sleeve.

[0011] Preferably, the transmission shaft sleeve has a hexagonal limiting shaft hole formed inside, and the cross section of the shaft connected to the universal joint is hexagonal.

[0012] Preferably, the first synchronous pulley is located directly above the drilling and milling spindle on the moving drilling and milling machine head.

[0013] Preferably, a vertical groove rail is fixed to the housing of the moving drilling and milling head on the rear side of the upper end seat, and a shaped slider is inserted into the groove rail;

[0014] The left side wall of the connecting arm abuts against the grooved rail, and a transverse positioning bolt is inserted into the connecting arm. The end of the positioning bolt is screwed and fixed to the slider. The connecting arm is clamped and fixed between the positioning bolt and the grooved rail.

[0015] Preferably, the drilling and milling spindle on the fixed drilling and milling head and the drilling and milling spindle on the moving drilling and milling head are staggered in front and behind.

[0016] The beneficial effects of this invention are as follows:

[0017] This dual independent CNC drilling and milling machine head is equipped with a set of adjustable heads, which can meet the requirement that the two sets of heads can simultaneously process planes at different angles, greatly facilitating the machining of CNC drilling and milling machines. Attached Figure Description

[0018] Figure 1 This is a side view of the structure of the present invention;

[0019] Figure 2 This is a side view schematic diagram of a partial cross-section of the internal components of the moving drill milling head of the present invention.

[0020] In the diagram: 1. Machine base; 2. Drilling and milling drive motor; 3. Fixed drilling and milling head; 31. Bearing seat; 4. Moving drilling and milling head; 5. Hinge bracket; 6. Angle adjustment mechanism; 61. Angle adjustment motor; 62. Upper end seat; 63. Adjusting screw; 64. Lower end seat; 65. Adjusting slide; 66. Connecting arm; 67. Connecting rod; 68. T-slot rail; 69. Positioning bolt; 7. Positioning lug; 8. Universal joint; 9. First synchronous pulley; 10. Support cantilever; 11. Synchronous belt; 12. Second synchronous pulley; 13. Drive shaft sleeve. Detailed Implementation

[0021] Example: See Figure 1 , 2As shown, a dual independent CNC drilling and milling head with adjustable machining angle includes a machine base 1 of a CNC drilling and milling machine. Two sets of fixed drilling and milling heads 3 (left) and movable drilling and milling heads 4 (right) are respectively provided on the front side of the machine base 1. Both the fixed drilling and milling heads 3 and the movable drilling and milling heads 4 include a housing. A vertical feed sleeve a is inserted inside the housing. A drilling and milling spindle b is connected to the feed sleeve a via a bearing. A clamping head d is fixedly connected to the lower end of the drilling and milling spindle b. A splined shaft e is formed on the upper end of the drilling and milling spindle b, extending out of the feed sleeve a and passing through a feed bracket c. A spline sleeve f is fitted, and the spline sleeve f is connected to the machine housing through a bearing; the feed bracket c on the front side of the drilling and milling spindle b is screwed with a feed screw, the two ends of the feed screw are pivotally connected to the machine housing, the upper end of the feed screw is fixedly connected to the rotating shaft of the feed motor, and the feed motor is fixedly connected to the top of the machine housing; the housing of the fixed drilling and milling head 3 is fixedly connected to the machine base 1, and a vertical bearing seat 31 is fixedly connected to the right side wall of the housing of the fixed drilling and milling head 3; the moving drilling and milling head 4 is located on the front side of the bearing seat 31 and is hinged to the bearing seat 31 through a hinge bracket 5;

[0022] An angle adjustment mechanism 6 is provided on the right side wall of the upper housing of the moving drilling and milling head 4. The angle adjustment mechanism 6 includes a vertical angle adjustment motor 61, which is fixedly connected to the upper end seat 62. A lower end seat 64 is provided below the upper end seat 62. Both the upper end seat 62 and the lower end seat 64 are fixedly connected to the housing of the moving drilling and milling head 4. A vertical adjustment screw 63 is inserted between the upper end seat 62 and the lower end seat 64. The upper and lower ends of the adjustment screw 63 are pivotally connected to the upper end seat 62 and the lower end seat 64, respectively. The upper end of the adjustment screw 63 is fixedly connected to the shaft of the angle adjustment motor 61 through a coupling.

[0023] The adjusting screw 63 is screwed with a vertical adjusting slide 65. A longitudinal connecting arm 66 is fixed to the rear side of the adjusting slide 65. The rear end of the connecting arm 66 is hinged to a connecting rod 67 via a hinge shaft. The rear end of the connecting rod 67 is hinged to a positioning ear 7 via a hinge shaft. The positioning ear 7 is fixed to the bearing seat 31.

[0024] The hinge bracket 5 is located on the upper part of the housing of the moving drilling and milling head 4, and the bearing seat 31 is located on the lower side of the hinge bracket 5.

[0025] The hinged bracket 5 includes a front hinged support and a rear hinged support. The front hinged support and the rear hinged support are respectively fixed to the housing and the bearing seat 31 of the moving drilling and milling head 4. The front hinged support and the rear hinged support are hinged together by a hinge shaft.

[0026] The top of the base 1 is fixedly connected to a drilling and milling drive motor 2. Two sets of drive pulleys are respectively inserted and fixedly connected to the rotating shaft of the drilling and milling drive motor 2. The two sets of drive pulleys are respectively fitted with synchronous belts 11. The two sets of drive pulleys are respectively connected to a first synchronous pulley 9 and a second synchronous pulley 12 through the synchronous belts 11. The second synchronous pulley 12 is inserted and fixedly connected to the upper end of the spline sleeve f on the fixed drilling and milling head 3. The drilling and milling drive motor 2 can drive the drilling and milling spindle b of the moving drilling and milling head 4 and the fixed drilling and milling head 3 to rotate simultaneously through belt drive.

[0027] A vertical connecting shaft is inserted into the first synchronous pulley 9. The connecting shaft is connected to a support cantilever 10 via a bearing. The rear end of the support cantilever 10 is fixed to the housing of the fixed drilling and milling head 3. A universal joint 8 is fixedly connected to the lower end of the connecting shaft. A connecting shaft is formed at the lower end of the universal joint 8. A transmission shaft sleeve 13 is inserted and fixed to the upper end of the spline sleeve f of the moving drilling and milling head 4. The connecting shaft of the universal joint 8 is inserted into the transmission shaft sleeve 13. When the moving drilling and milling head 4 is angled, its universal joint 8 can be angled accordingly, and transmission is achieved based on the universal joint 8.

[0028] The transmission shaft sleeve 13 has a regular hexagonal limiting shaft hole formed inside, and the cross section of the shaft connected to the universal joint 8 is regular hexagonal, so that the universal joint 8 can drive the transmission shaft sleeve 13 to rotate, and the transmission shaft sleeve 13 drives the spline sleeve f to rotate.

[0029] The first synchronous pulley 9 is located directly above the drilling and milling spindle b on the moving drilling and milling head 4, thus allowing for a wider adjustment range.

[0030] A vertical T-shaped groove rail 68 is fixedly connected to the housing of the moving drilling and milling head 4 on the rear side of the upper end seat 62, and a T-shaped slider is inserted into the T-shaped groove rail 68.

[0031] The left side wall of the connecting arm 66 abuts against the T-slot rail 68. A transverse positioning bolt 69 is inserted into the connecting arm 66, and the end of the positioning bolt 69 is screwed and fixed to the slider. The connecting arm 66 is clamped and fixed between the positioning bolt 69 and the T-slot rail 68. The positioning bolt 69 and the T-slot rail 68 can be used to reinforce and limit the position after the angle adjustment is completed by the moving drilling and milling head 4, and at the same time, the load on the adjusting screw 63 can be reduced.

[0032] The drilling and milling spindle b on the fixed drilling and milling head 3 and the drilling and milling spindle b on the moving drilling and milling head 4 are misaligned in front and behind.

[0033] Working principle: This structure is a dual independent CNC drilling and milling machine head. Under the premise of designing a set of fixed drilling and milling machine heads 3, a moving drilling and milling machine head 4 is added on one side. The fixed drilling and milling machine head 3 can only realize the vertical movement of the drilling and milling spindle b. The fixed drilling and milling machine head 3 is only suitable for processing the horizontal surface of the upper part of the workpiece.

[0034] The moving drilling and milling head 4 achieves the feed of the drilling and milling spindle b by changing the angle, so that the drilling and milling spindle b can be used to process the inclined surface on the upper part of the workpiece, while also taking into account the horizontal surface.

[0035] The angle adjustment of the moving drilling and milling head 4 is mainly based on the control of the angle adjustment motor 61. The angle adjustment motor 61 can drive the adjustment screw 63 to rotate, thereby driving the adjustment slide 65 to move up and down. The connecting arm 66 on the adjustment slide 65 drives the position of the connecting rod 67 to change, thereby realizing the rotation of the moving drilling and milling head 4 around the hinge bracket 5, and realizing the angle adjustment of the moving drilling and milling head 4.

[0036] The embodiments described are illustrative of the invention and are not intended to limit the invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the invention; therefore, the scope of protection of the invention should be as set forth in the claims.

Claims

1. A dual independent CNC drilling and milling head with adjustable machining angle, comprising a machine base (1) of a CNC drilling and milling machine, wherein the front side of the machine base (1) is provided with two sets of fixed drilling and milling heads (3) and moving drilling and milling heads (4), respectively. Both the fixed drilling and milling heads (3) and the moving drilling and milling heads (4) include a housing, into which a vertical feed sleeve (a) is inserted. A drilling and milling spindle (b) is connected to the feed sleeve (a) via a bearing. A clamping head (d) is fixedly connected to the lower end of the drilling and milling spindle (b). A splined shaft (e) is formed by extending the feed sleeve (a) from the upper end and passing through the feed bracket (c). A splined sleeve (f) is fitted on the splined shaft (e), and the splined sleeve (f) is connected to the machine housing through a bearing. A feed screw is screwed to the feed bracket (c) on the front side of the drilling and milling spindle (b). The two ends of the feed screw are pivotally connected to the machine housing. The upper end of the feed screw is fixedly connected to the rotating shaft of the feed motor. The feed motor is fixedly connected to the top of the machine housing. The machine housing of the fixed drilling and milling head (3) is fixedly connected to the machine base (1). The characteristic is that: A vertical bearing seat (31) is fixed to the right side wall of the housing of the fixed drilling and milling head (3). The moving drilling and milling head (4) is located in front of the bearing seat (31) and is hinged to the bearing seat (31) through the hinge bracket (5). An angle adjustment mechanism (6) is provided on the right side wall of the upper housing of the moving drilling and milling head (4). The angle adjustment mechanism (6) includes a vertical angle adjustment motor (61). The angle adjustment motor (61) is fixedly connected to the upper end seat (62). A lower end seat (64) is provided below the upper end seat (62). The upper end seat (62) and the lower end seat (64) are both fixedly connected to the housing of the moving drilling and milling head (4). A vertical adjustment screw (63) is inserted between the upper end seat (62) and the lower end seat (64). The upper and lower ends of the adjustment screw (63) are pivotally connected to the upper end seat (62) and the lower end seat (64) respectively. The upper end of the adjustment screw (63) is fixedly connected to the shaft of the angle adjustment motor (61) through a coupling. A vertical adjusting slide (65) is screwed onto the adjusting screw (63). A longitudinal connecting arm (66) is fixed to the rear side of the adjusting slide (65). A connecting rod (67) is hinged to the rear end of the connecting arm (66) through a hinge shaft. The rear end of the connecting rod (67) is hinged to the positioning ear (7) through a hinge shaft. The positioning ear (7) is fixed to the bearing seat (31).

2. The dual independent CNC drilling and milling head with adjustable machining angle according to claim 1, characterized in that: The hinge bracket (5) is located on the upper part of the upper housing of the moving drilling and milling head (4), and the bearing seat (31) is located on the lower side of the hinge bracket (5). The hinge bracket (5) includes a front hinge support and a rear hinge support. The front hinge support and the rear hinge support are respectively fixed to the housing and the bearing seat (31) of the moving drilling and milling head (4). The front hinge support and the rear hinge support are hinged together by a hinge shaft.

3. The dual independent CNC drilling and milling head with adjustable machining angle according to claim 1, characterized in that: The top of the base (1) is fixedly connected to a drilling and milling drive motor (2). Two sets of drive pulleys are respectively inserted and fixedly connected to the shaft of the drilling and milling drive motor (2). The two sets of drive pulleys are respectively fitted with a synchronous belt (11). The two sets of drive pulleys are respectively connected to a first synchronous pulley (9) and a second synchronous pulley (12) through the synchronous belt (11). The second synchronous pulley (12) is inserted and fixedly connected to the upper end of the spline sleeve (f) on the fixed drilling and milling head (3). The first synchronous pulley (9) is fitted with a vertical connecting shaft, which is connected to a support cantilever (10) via a bearing. The rear end of the support cantilever (10) is fixed to the housing of the fixed drilling and milling head (3). The lower end of the connecting shaft is fixedly connected to a universal joint (8), and the lower end of the universal joint (8) is formed with a connecting shaft. The upper end of the spline sleeve (f) of the moving drilling and milling head (4) is fitted with a transmission shaft sleeve (13), and the connecting shaft of the universal joint (8) is inserted into the transmission shaft sleeve (13).

4. A dual independent CNC drilling and milling head with adjustable machining angle according to claim 3, characterized in that: The transmission shaft sleeve (13) has a hexagonal limiting shaft hole formed inside, and the cross section of the shaft connected to the universal joint (8) is hexagonal.

5. A dual independent CNC drilling and milling head with adjustable machining angle according to claim 3, characterized in that: The first synchronous pulley (9) is located directly above the drilling and milling spindle (b) on the moving drilling and milling head (4).

6. A dual independent CNC drilling and milling head with adjustable machining angle according to claim 1, characterized in that: A vertical T-shaped groove rail (68) is fixedly connected to the housing of the moving drilling and milling head (4) on the rear side of the upper end seat (62), and a T-shaped slider is inserted into the T-shaped groove rail (68). The left side wall of the connecting arm (66) abuts against the T-shaped groove rail (68), and a transverse positioning bolt (69) is inserted into the connecting arm (66). The end of the positioning bolt (69) is screwed and fixed to the slider. The connecting arm (66) is clamped and fixed between the positioning bolt (69) and the T-shaped groove rail (68).

7. A dual independent CNC drilling and milling head with adjustable machining angle according to claim 1, characterized in that: The drilling and milling spindle (b) on the fixed drilling and milling head (3) and the drilling and milling spindle (b) on the moving drilling and milling head (4) are misaligned in front and behind.

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