A drill press feed mechanism

Abstract

The utility model provides a drilling machine feed mechanism belongs to drilling machine equipment technical field. Including the body, the top of body slidingly connected with the operation platform, the top of body still fixedly connected with the stand, the end of stand fixedly connected with the operator, the surface of stand slidingly connected with the slide rail board, the surface of slide rail board slidingly connected with the feed cabin, the surface fixedly connected with the rotary rod of feed cabin, the inside fixedly connected with the buffer adjustment subassembly of feed cabin. The utility model discloses through setting buffer adjustment subassembly and dynamic protection component, can be flexible to the problem of drill load mutation, makes the feed speed with load dynamic attenuation, avoids the drill blade collapse or mechanism deformation caused by load sudden increase, can also stop work automatically when the drill hole or at the material edge, avoids the drill and device damage, prevents the drill idling or with workbench collision and causes abrasion, has reduced the drill replacement frequency and device maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of drilling equipment technology, and in particular to a drilling machine feed mechanism. Background Technology

[0002] A drilling machine is a machine tool mainly used for drilling. It typically consists of a worktable, spindle, drill bit, and feed system. During operation, the spindle drives the drill bit to rotate, and by applying pressure and feed motion, the desired hole is formed in the workpiece.

[0003] When the existing drilling machine feed mechanism is running, it is difficult to respond flexibly to sudden changes in drill bit load, which can easily cause damage to the device. At the same time, when the drill bit passes through the hole or is at the edge of the material, it is difficult to effectively stop the drill bit operation, which can lead to damage to the drill bit or the device and increase maintenance costs.

[0004] Therefore, this application provides a drilling machine feed mechanism to meet the requirements. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a drilling machine feed mechanism to address the existing problems of difficulty in flexibly responding to sudden changes in drill bit load, which can easily cause damage to the device. At the same time, when the drill bit passes through the hole or is at the edge of the material, the drilling machine feed mechanism is difficult to stop effectively, which can lead to damage to the drill bit or the device and increase maintenance costs.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A drilling machine feed mechanism includes a bed, an operating table slidably connected to the top of the bed, a column fixedly connected to the top of the bed, an operator fixedly connected to the end of the column, a slide rail plate slidably connected to the surface of the column, a feed chamber slidably connected to the surface of the slide rail plate, a rotating rod fixedly connected to the surface of the feed chamber, a buffer adjustment assembly fixedly connected inside the feed chamber for buffering spindle pressure, and the buffer adjustment assembly connected to the feed chamber; and a dynamic protection assembly for protecting the drill bit, the dynamic protection assembly connected to the buffer adjustment assembly.

[0007] Optionally, the buffer adjustment assembly includes a slide rail fixedly connected to the inner wall of the feed chamber, and a miniature servo motor is fixedly connected to the end of the slide rail.

[0008] Optionally, a lead screw is rotatably connected inside the slide rail, and the output end of the micro servo motor is connected to the lead screw.

[0009] Optionally, the lead screw has a threaded connection to a slider, the two ends of which are slidably connected inside the slide rail, and a platform is mounted on the top of the slider.

[0010] Optionally, a connecting rod is fixedly connected to one end of the slider, a driving block is fixedly connected to the other end of the connecting rod, and a pressure sensor is fixedly connected to the top of the slider.

[0011] Optionally, a hydraulic buffer cylinder is also installed on the inner wall of the feed chamber. The hydraulic buffer cylinder is located on top of the pressure sensor, and a reversing valve is fixedly connected to the end of the hydraulic buffer cylinder.

[0012] Optionally, the dynamic protection component includes a main shaft fixedly connected to the bottom of the buffer adjustment component, and a sleeve is fixedly connected to the bottom surface of the main shaft.

[0013] Optionally, the bottom of the sleeve is snapped with a snap-fit ​​connector, and the bottom of the snap-fit ​​connector is fixedly connected with a drive rod, the bottom of the drive rod having a cross-shaped groove.

[0014] Optionally, a sleeve is fixedly connected to the bottom of the drive rod, a spring is also fixedly connected to the bottom of the drive rod, and a drill bit is fixedly connected to the bottom of the spring.

[0015] Optionally, a protrusion is fixedly connected to the top of the drill bit, and the protrusion corresponds to a cross-shaped groove opened at the bottom of the drive rod.

[0016] Compared with the prior art, this utility model has at least the following beneficial effects: In the above solution, by setting up a buffer adjustment component, the problem of sudden changes in drill bit load can be flexibly addressed. When the drill bit contacts the workpiece and generates a top contact force, the spindle drives the drive block and connecting rod to slide the slider in the slide rail. The pressure sensor on the top of the slider can capture the force signal of the spindle in real time, and adjust the oil circuit pressure of the hydraulic buffer cylinder by controlling the reversing valve, so that the feed speed dynamically decreases with the load, avoiding drill bit chipping or mechanism deformation caused by sudden increase in load. After the machining is completed, the return spring of the hydraulic buffer cylinder can drive the slider to quickly return to its original position. At the same time, the micro servo motor drives the lead screw to realize the micro-adjustment of the slider, which not only ensures the stability of the mechanism operation, but also improves the drilling accuracy.

[0017] By setting up dynamic protection components, the system can automatically stop operation when the drill bit passes through a hole or is at the edge of the material, avoiding damage to the drill bit and the device. During installation, the drill bit is clamped to the spindle sleeve via a snap-fit ​​connector. Before drilling, when the drill bit descends and contacts the workpiece, it drives the top cross-shaped protrusion to move upward, causing the spring inside the sleeve to contract. After the protrusion is fully inserted into the groove at the bottom of the drive rod, the drill bit accelerates its rotation. When the drill bit breaks through the bottom of the workpiece without any resistance, the spring returns to its original position and extends, the protrusion disengages from the groove, and the drill bit loses its drive and automatically stops rotating, preventing the drill bit from spinning idly or colliding with the worktable and causing wear, thus reducing the frequency of drill bit replacement and the maintenance cost of the device. Attached Figure Description

[0018] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0019] Figure 1 A first-person perspective three-dimensional structural diagram of the drilling machine feed mechanism; Figure 2 A two-dimensional structural diagram of the drilling machine feed mechanism from a second perspective. Figure 3 This is a magnified three-dimensional structural diagram of the inside of the feed chamber. Figure 4 This is a magnified three-dimensional structural diagram of the buffer adjustment component; Figure 5 A cross-sectional, magnified three-dimensional structural diagram of the drive block and spindle assembly; Figure 6 This is a three-dimensional magnified schematic diagram of the dynamic protection component.

[0020] Figure label: 1. Bed; 2. Control panel; 3. Column; 4. Operator; 5. Slide rail; 6. Feed compartment; 7. Rotary rod; 10. Buffer adjustment assembly; 11. Slide rail; 12. Micro servo motor; 13. Lead screw; 14. Slider; 15. Connecting rod; 16. Pressure sensor; 17. Hydraulic buffer cylinder; 18. Reversing valve; 19. Drive block; 20. Dynamic protection assembly; 21. Spindle; 22. Sleeve; 23. Snap-fit ​​connector; 24. Drive rod; 25. Sleeve; 26. Spring; 27. Protrusion; 28. Drill bit.

[0021] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0022] The following is a detailed description of a drilling machine feed mechanism provided by this utility model, in conjunction with the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0023] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0024] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0025] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0026] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0027] like Figures 1 to 6As shown, an embodiment of this utility model provides a drilling machine feed mechanism, including a bed 1, an operating table 2 slidably connected to the top of the bed 1, a column 3 fixedly connected to the top of the bed 1, an operator 4 fixedly connected to the end of the column 3, a slide rail plate 5 slidably connected to the surface of the column 3, a feed chamber 6 slidably connected to the surface of the slide rail plate 5, a rotating rod 7 fixedly connected to the surface of the feed chamber 6, a buffer adjustment assembly 10 fixedly connected inside the feed chamber 6, the buffer adjustment assembly 10 being used to buffer the pressure of the spindle 21, and the buffer adjustment assembly 10 being connected to the feed chamber 6; and a dynamic protection assembly 20, the dynamic protection assembly 20 being used to protect the drill bit 28, and the dynamic protection assembly 20 being connected to the buffer adjustment assembly 10.

[0028] like Figures 3 to 4 As shown, the buffer adjustment assembly 10 includes a slide rail 11 fixedly connected to the inner wall of the feed chamber 6. A micro servo motor 12 is fixedly connected to the end of the slide rail 11. A lead screw 13 is rotatably connected inside the slide rail 11. The output end of the micro servo motor 12 is connected to the lead screw 13. A slider 14 is threadedly connected to the surface of the lead screw 13. The two ends of the slider 14 are slidably connected inside the slide rail 11. A platform is installed on the top of the slider 14. A connecting rod 15 is fixedly connected to one end of the slider 14. A drive block 19 is fixedly connected to the other end of the connecting rod 15. A pressure sensor 16 is fixedly connected to the top of the slider 14. A hydraulic buffer cylinder 17 is also installed on the inner wall of the feed chamber 6. The hydraulic buffer cylinder 17 is located on top of the pressure sensor 16. The hydraulic buffer cylinder 17 is fixedly connected to a reversing valve 18 at its end. When the drill bit 28 contacts the workpiece and generates a top contact force, the spindle 21 drives the drive block 19 and the connecting rod 15 to slide the slider 14 in the slide rail 11. The pressure sensor 16 on the top of the slider 14 can capture the force signal of the spindle 21 in real time and adjust the oil pressure of the hydraulic buffer cylinder 17 by controlling the reversing valve 18, so that the feed speed dynamically decreases with the load, avoiding the drill bit 28 from chipping or the mechanism from deforming due to a sudden increase in load. After the machining is completed, the return spring of the hydraulic buffer cylinder 17 can drive the slider 14 to quickly return to its original position. At the same time, the micro servo motor 12 drives the lead screw 13 to realize the micro adjustment of the slider 14, which not only ensures the stability of the mechanism operation, but also improves the drilling accuracy.

[0029] like Figures 4 to 6As shown, the dynamic protection component 20 includes a main shaft 21 fixedly connected to the bottom of the buffer adjustment component 10. A sleeve 22 is fixedly connected to the bottom surface of the main shaft 21. A snap-fit ​​connector 23 is snapped into the bottom of the sleeve 22. A drive rod 24 is fixedly connected to the bottom of the snap-fit ​​connector 23. A cross-shaped groove is formed at the bottom of the drive rod 24. A sleeve 25 is fixedly connected to the bottom of the drive rod 24. A spring 26 is also fixedly connected to the bottom of the drive rod 24. A drill bit 28 is fixedly connected to the bottom of the spring 26. A protrusion 27 is fixedly connected to the top of the drill bit 28. The protrusion 27 is opposite to the cross-shaped groove formed at the bottom of the drive rod 24. When the drill bit 28 is installed, it is engaged with the sleeve 22 at the bottom of the spindle 21 via the snap-fit ​​connector 23. Before drilling, when the drill bit 28 descends and contacts the workpiece, the drill bit 28 drives the top cross-shaped protrusion 27 to move upward, causing the spring 26 inside the sleeve 25 to contract. After the protrusion 27 is fully inserted into the bottom groove of the drive rod 24, the drill bit 28 accelerates its rotation. When the drill bit 28 breaks through the bottom of the workpiece without resistance, the spring 26 returns to its original position and extends, the protrusion 27 disengages from the groove, and the drill bit 28 loses its drive and automatically stops rotating. This prevents the drill bit 28 from spinning idly or colliding with the worktable, thus reducing the frequency of drill bit 28 replacement and the maintenance cost of the device.

[0030] The working principle of the technical solution provided by this utility model is as follows: In use, the workpiece is first placed on the operating table 2 and clamped and fixed. Then, the lifting height of the slide rail plate 5 on the column 3 is adjusted by the operator 4, and the feed chamber 6 is slid on the slide rail plate 5 so that the feed chamber 6 is above the workpiece. Then, the motor is started and the rotating rod 7 is operated to move the drill bit 28 closer to the workpiece. After the drill bit 28 contacts the workpiece, the buffer adjustment component 10 starts to operate. When the drill bit 28 contacts the workpiece, a top contact occurs. At this time, the drive block 19 at the top of the spindle 21 drives the connecting rod 15 to move together. As the connecting rod 15 moves, the slider 14 moves along the slide rail 1. The slide is slidable inside the spindle 21. The pressure sensor 16, which is fixedly connected to the slide block 14, captures the force signal of the spindle 21 in real time. Then, the hydraulic buffer cylinder 17 is adjusted by controlling the reversing valve 18, so that the oil pressure of the hydraulic buffer cylinder 17 can be adjusted, and the feed speed can be dynamically reduced with the load to prevent the drill bit 28 from chipping. After the machining is completed, the return spring in the hydraulic buffer cylinder 17 causes the slide block 14 connected to the output end to quickly return to its original position. Then, the lead screw 13 is driven by the micro servo motor 12 to make the slide block 14 finely adjusted on the surface of the lead screw 13 to improve the working accuracy.

[0031] Before the drill bit 28 contacts the workpiece, the dynamic protection component 20 starts operating. First, the drill bit 28, corresponding to the processing requirements, is clamped to the sleeve 22 on the spindle 21 via the clamping connector 23. After the clamping connector 23 is fixed, the spindle 21 begins to rotate the drive rod 24. Simultaneously, the drill bit 28 slowly descends and contacts and abuts the workpiece. Then, the drill bit 28 moves the top-fixed cross-shaped protrusion 27 upwards. During this upward movement, the spring 26 installed in the sleeve 25 contracts, and then the protrusion 27 gradually... After the cross-shaped groove at the bottom of the drive rod 24 is fully inserted, the drill bit 28 begins to accelerate and rotate to drill the workpiece. As the drill bit 28 gradually penetrates the workpiece, until it is close to the bottom edge of the workpiece, the pressure sensor 16 captures the pressure changes in real time and adjusts the speed of the spindle 21. Then, when the drill bit 28 breaks through the bottom of the workpiece, there is no resistance at the bottom of the drill bit 28. At this time, the spring 26 begins to return to its original position and extend. Then, the protrusion 27 fixedly connected to the top of the drill bit 28 begins to disengage from the groove at the bottom of the drive rod 24. At this time, the drill bit 28 loses its drive and stops rotating, protecting the drill bit 28 from damage.

[0032] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A drilling machine feed mechanism, characterized in that, The device includes a bed, an operating table slidably connected to the top of the bed, a column fixedly connected to the top of the bed, an operator fixedly connected to the end of the column, a slide rail plate slidably connected to the surface of the column, a feed chamber slidably connected to the surface of the slide rail plate, a rotating rod fixedly connected to the surface of the feed chamber, and a buffer adjustment assembly fixedly connected inside the feed chamber. The buffer adjustment assembly is used to buffer spindle pressure and is connected to the feed chamber. A dynamic protection component is provided to protect the drill bit and is connected to the buffer adjustment component.

2. The drilling machine feed mechanism according to claim 1, characterized in that, The buffer adjustment assembly includes a slide rail fixedly connected to the inner wall of the feed chamber, and a miniature servo motor is fixedly connected to the end of the slide rail.

3. The drilling machine feed mechanism according to claim 2, characterized in that, The slide rail is internally connected to a lead screw, and the output end of the micro servo motor is connected to the lead screw.

4. The drilling machine feed mechanism according to claim 3, characterized in that, The lead screw has a threaded connection to a slider, the two ends of which are slidably connected inside the slide rail, and a platform is mounted on the top of the slider.

5. The drilling machine feed mechanism according to claim 4, characterized in that, One end of the slider is fixedly connected to a connecting rod, the other end of the connecting rod is fixedly connected to a driving block, and a pressure sensor is fixedly connected to the top of the slider.

6. The drilling machine feed mechanism according to claim 5, characterized in that, The inner wall of the feed chamber is also equipped with a hydraulic buffer cylinder, which is located on top of the pressure sensor, and a reversing valve is fixedly connected to the end of the hydraulic buffer cylinder.

7. The drilling machine feed mechanism according to claim 6, characterized in that, The dynamic protection component includes a main shaft fixedly connected to the bottom of the buffer adjustment component, and a sleeve is fixedly connected to the bottom surface of the main shaft.

8. The drilling machine feed mechanism according to claim 7, characterized in that, The bottom of the sleeve is fitted with a snap-fit ​​connector, and the bottom of the snap-fit ​​connector is fixedly connected to a drive rod, the bottom of which has a cross-shaped groove.

9. The drilling machine feed mechanism according to claim 8, characterized in that, A sleeve is fixedly connected to the bottom of the drive rod, a spring is also fixedly connected to the bottom of the drive rod, and a drill bit is fixedly connected to the bottom of the spring.

10. The drilling machine feed mechanism according to claim 9, characterized in that, A protrusion is fixedly connected to the top of the drill bit, and the protrusion corresponds to the cross-shaped groove opened at the bottom of the drive rod.

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