Double-head double-servo tapping head

Abstract

The utility model belongs to the field of drilling and tapping, especially double -end double servo drilling and tapping head, aiming at the low efficiency of single -end machining, poor adaptability, poor synchronism of multi -power head, insufficient precision, low flexibility of adjustment, high cost of change type, large single servo drive load and high failure rate, the following scheme is presented, it includes: double -end power head base, the top of double -end power head base is provided with double -end adjustable bottom plate, double -end servo motor casting body is set up in the top of double -end adjustable bottom plate, power mechanism is set up in the top of double -end servo motor casting body, moving mechanism is set up in one side of double -end servo motor casting body, the utility model discloses through the innovation of double -end servo synchronous drive and integrated structure, has realized " high efficiency, high precision, high flexible, high reliable " drilling and tapping processing, satisfies the strict demand of precision equipment field, has remarkable technical and economic value.

Description

Technical Field

[0001] This utility model relates to the field of drilling and tapping technology, and in particular to a dual-head dual-servo drilling and tapping head. Background Technology

[0002] In the fields of precision equipment such as aerospace and automobile manufacturing, parts (such as aircraft nuts and engine brackets) often need to be machined with multiple holes (such as symmetrical threaded holes and multiple sets of positioning holes) at the same time, which places extremely high demands on the synchronous accuracy of drilling / tapping, processing efficiency and positional consistency.

[0003] Existing drilling and tapping equipment has the following technical defects:

[0004] 1. Single-head processing has low efficiency and poor adaptability.

[0005] Traditional single-head power heads need to process multiple holes sequentially. For parts with symmetrical holes or multiple sets of holes, the processing time increases linearly with the number of holes (e.g., processing two holes takes twice as long as processing one hole), which cannot meet the needs of mass production. Furthermore, single-head equipment requires frequent adjustments to the workstation, which can easily lead to deviations in the spacing between holes.

[0006] 2. Poor synchronization and insufficient precision of multiple power heads.

[0007] Some multi-power head equipment adopts a single servo drive + gear transmission structure. The gear backlash will cause the rotation speed / feed amount of multiple power heads to be inconsistent, resulting in differences in hole depth and thread accuracy, which cannot meet aviation standards. At the same time, the rigidity of the feed mechanism is insufficient, which can easily lead to problems such as "drilling deviation and tapping stripping".

[0008] 3. Low adjustability and high replacement cost.

[0009] Traditional multi-power heads have a fixed spacing. When changing parts with different hole spacings, the power head bracket needs to be replaced or recalibrated, which cannot adapt to the flexible production of parts with multiple specifications. In addition, the integration between the power head and the feeding mechanism is low, and the equipment occupies a large area.

[0010] 4. Single servo drive has a high load and a high failure rate.

[0011] When a single servo drives multiple power heads, the load is concentrated on a single servo motor, which is under full load for a long time. The mean time between failures (MTBF) is less than 600 hours, resulting in high maintenance costs.

[0012] Therefore, we propose a dual-head, dual-servo drilling and tapping head to solve the above problems. Utility Model Content

[0013] The purpose of this invention is to address the shortcomings of existing technologies, such as low processing efficiency and poor adaptability of single-head drilling and tapping heads; poor synchronization and insufficient precision of multi-power heads; low adjustment flexibility and high replacement cost; and large load and high failure rate of single servo drive. The proposed invention is a dual-head dual-servo drilling and tapping head.

[0014] To achieve the above objectives, the present invention adopts the following technical solution:

[0015] Dual-head, dual-servo drilling and tapping bit, including:

[0016] Dual-head power head base; the top of the dual-head power head base is provided with a dual-head adjustable base plate;

[0017] The main body of the dual-head servo motor casting is located on top of the dual-head adjustable base plate;

[0018] The power mechanism is located on top of the dual-head servo motor casting body;

[0019] The moving mechanism is located on one side of the main body of the dual-head servo motor casting.

[0020] Preferably, the power mechanism includes a spindle servo motor mount disposed on the top of the dual-head servo motor casting body, and two spindle servo motors are disposed on one side of the spindle servo motor mount. A first synchronous pulley located inside the spindle servo motor mount is sleeved on the output shaft of the spindle servo motor, and the first synchronous pulley is connected to a synchronous toothed belt. The synchronous toothed belt is connected to a second synchronous pulley, and a synchronous shaft rotatably mounted inside the dual-head servo motor casting body is disposed on the second synchronous pulley.

[0021] Preferably, a dual-head spindle power head slide sleeve is slidably mounted on the synchronous shaft, and a power head is provided on the dual-head spindle power head slide sleeve.

[0022] Preferably, the moving mechanism includes a servo feed motor disposed on one side of the dual-head servo motor casting body, and a feed screw is disposed on the output shaft of the servo feed motor, and a moving block slidably installed inside the dual-head servo motor casting body is connected to the feed screw.

[0023] Preferably, the moving block and the double-headed spindle power head slide are rotatably connected.

[0024] The beneficial effects of the dual-head dual-servo drilling and tapping head in this invention are as follows:

[0025] (i) Simultaneous processing efficiency doubles, adapting to mass production.

[0026] 1. Dual-head synchronous processing improves efficiency.

[0027] It uses two independent spindle servo motors to drive the power head, which can simultaneously complete drilling / tapping of two holes, shortening the processing time compared to single-head equipment and fully adapting to the needs of mass production.

[0028] 2. Dual servo independent control, adaptable to multiple process scenarios

[0029] The two spindle servo motors can independently adjust their speed and direction, enabling them to simultaneously complete the processing of the same hole position, or to separately realize the composite process of "drilling + tapping" (such as drilling with one power head and tapping with the other power head), without the need to change equipment, thus improving process adaptability.

[0030] (II) Significantly improved synchronization accuracy and machining quality

[0031] 1. Synchronous belt drive + dual servo drive, achieving 99.9% consistency.

[0032] The transmission structure adopts "first synchronous pulley + synchronous toothed belt + second synchronous pulley" (synchronous belt transmission gap ≤0.01mm), combined with the precise control of dual servo motors, the speed deviation of the two power heads is ≤0.5%, the feed deviation is ≤0.03mm, and the hole depth consistency is improved to 99.9%, which fully meets the aerospace precision machining standards.

[0033] 2. Adjustable feed mechanism, hole position accuracy within 0.05mm

[0034] The servo feed motor drives the moving block through the feed screw, which in turn drives the double-head spindle power head sliding sleeve to move precisely (feed accuracy ≤ 0.02mm). Combined with the spacing adjustment function of the double-head adjustable base plate (adjustment accuracy ≤ 0.03mm), the hole spacing deviation is controlled within 0.05mm, solving the problem of hole misalignment in traditional equipment.

[0035] (iii) High flexibility in adjustment and reduced replacement costs

[0036] 1. Adjustable spacing to accommodate various parts specifications.

[0037] The dual-head spindle power head slide sleeve can slide along the synchronous shaft. With the position adjustment of the dual-head adjustable base plate, it can be adapted to different parts. When changing models, only the slide sleeve spacing needs to be adjusted, without changing the tooling, thus reducing the changeover cost.

[0038] 2. Integrated structure, saving space

[0039] The power mechanism and the moving mechanism are integrated into the main body of the dual-head servo motor casting, which reduces the equipment's footprint compared to traditional multi-head equipment, making it suitable for compact workshop layouts.

[0040] (iv) Distributed load significantly improves equipment reliability

[0041] 1. Dual servo load distribution

[0042] Two spindle servo motors independently drive their respective power heads, distributing the load, reducing the time the motors run at full load, and lowering maintenance costs.

[0043] 2. Synchronous belt drives buffer impacts and reduce wear.

[0044] The elastic properties of synchronous toothed belts can buffer the impact force during drilling / tapping, avoid rigid wear of gear transmission, extend the service life of the power head, and further reduce maintenance costs.

[0045] This invention achieves "high efficiency, high precision, high flexibility, and high reliability" in drilling and tapping through innovative dual-servo synchronous drive and integrated structure, meeting the stringent requirements of the precision equipment field and possessing significant technical and economic value. Attached Figure Description

[0046] Figure 1 This is a cross-sectional structural diagram of the dual-head dual-servo drilling and tapping head proposed in this utility model.

[0047] Figure 2 This is a cross-sectional view of the dual-head dual-servo drilling and tapping head proposed in this utility model.

[0048] In the diagram: 1. Dual-head power head base; 2. Dual-head adjustable base plate; 3. Dual-head servo motor casting body; 4. Spindle servo motor base; 5. Spindle servo motor; 6. First synchronous pulley; 7. Synchronous toothed belt; 8. Synchronous shaft; 9. Dual-head spindle power head slide; 10. Power head; 11. Servo feed motor; 12. Feed screw; 13. Moving block; 14. Second synchronous pulley. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0050] Example

[0051] Reference Figures 1-2 Dual-head dual-servo drilling and tapping bit, including:

[0052] Dual-head power head base 1; The top of the dual-head power head base 1 is provided with a dual-head adjustable base plate 2;

[0053] The main body 3 of the dual-head servo motor casting is set on the top of the dual-head adjustable base plate 2;

[0054] The power mechanism is located on the top of the dual-head servo motor casting body 3;

[0055] The moving mechanism is located on one side of the main body 3 of the dual-head servo motor casting.

[0056] In this embodiment, the power mechanism includes a spindle servo motor base 4 disposed on the top of the dual-head servo motor casting body 3, and two spindle servo motors 5 disposed on one side of the spindle servo motor base 4. A first synchronous pulley 6 located inside the spindle servo motor base 4 is sleeved on the output shaft of the spindle servo motor 5, and the first synchronous pulley 6 is connected to a synchronous toothed belt 7. The synchronous toothed belt 7 is connected to a second synchronous pulley 14, and a synchronous shaft 8 rotatably mounted inside the dual-head servo motor casting body 3 is disposed on the second synchronous pulley 14.

[0057] In this embodiment, a dual-head spindle power head slide sleeve 9 is slidably mounted on the synchronous shaft 8, and a power head 10 is provided on the dual-head spindle power head slide sleeve 9.

[0058] In this embodiment, the moving mechanism includes a servo feed motor 11 disposed on one side of the dual-head servo motor casting body 3, and a feed screw 12 is disposed on the output shaft of the servo feed motor 11. A moving block 13 is connected to the feed screw 12 and is slidably installed inside the dual-head servo motor casting body 3.

[0059] In this embodiment, the movable block 13 and the double-headed spindle power head sliding sleeve 9 are rotatably connected.

[0060] In this embodiment, during use, the servo feed motor 11 is started, which drives the feed screw 12 to rotate, thereby driving the moving block 13 to move. The moving block 13 drives the double-head spindle power head slide sleeve 9 to move, and the double-head spindle power head slide sleeve 9 drives the power head 10 to move. After moving, the two spindle servo motors 5 are started, which drive the first synchronous pulley 6 to rotate. Through the synchronous toothed belt 7 and the second synchronous pulley 14, the synchronous shaft 8 is driven to rotate. The synchronous shaft 8 drives the double-head spindle power head slide sleeve 9 to rotate, thereby driving the two power heads 10 to rotate, realizing double-head drilling.

[0061] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dual-head, dual-servo drilling and tapping bit, characterized in that, include: Dual-head power head base (1); the top of the dual-head power head base (1) is provided with a dual-head adjustable base plate (2); The main body (3) of the dual-head servo motor casting is set on the top of the dual-head adjustable base plate (2); The power mechanism is located on the top of the dual-head servo motor casting body (3); The moving mechanism is located on one side of the main body (3) of the dual-head servo motor casting.

2. The dual-head dual-servo drilling and tapping bit according to claim 1, characterized in that, The power mechanism includes a spindle servo motor base (4) located on the top of the dual-head servo motor casting body (3), and two spindle servo motors (5) are provided on one side of the spindle servo motor base (4). A first synchronous pulley (6) located inside the spindle servo motor base (4) is sleeved on the output shaft of the spindle servo motor (5), and a synchronous toothed belt (7) is connected to the first synchronous pulley (6). A second synchronous pulley (14) is connected to the first synchronous pulley (6), and a synchronous shaft (8) rotatably installed inside the dual-head servo motor casting body (3) is provided on the second synchronous pulley (14).

3. The dual-head dual-servo drilling and tapping bit according to claim 2, characterized in that, The synchronous shaft (8) is slidably mounted with a double-headed spindle power head sleeve (9), and a power head (10) is provided on the double-headed spindle power head sleeve (9).

4. The dual-head dual-servo drilling and tapping bit according to claim 3, characterized in that, The moving mechanism includes a servo feed motor (11) disposed on one side of the dual-head servo motor casting body (3), and a feed screw (12) is disposed on the output shaft of the servo feed motor (11), and a moving block (13) is connected to the feed screw (12) and slidably installed inside the dual-head servo motor casting body (3).

5. The dual-head dual-servo drilling and tapping bit according to claim 4, characterized in that, The movable block (13) and the double-headed spindle power head slide sleeve (9) are rotatably connected.

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