A turnover chip brushing device for broaching machine
The flip-type chip brushing device solves the space occupation and pollution problems of cleaning broach chips on broaching machines, and extends the life of the brush bristles and broaches, while improving the processing quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN JINQIE CNC MACHINE TOOL CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-06-02
AI Technical Summary
When cleaning iron filings from the surface of the broach on an existing broaching machine, the blowing method causes the iron filings to scatter and pollute the environment, and they are difficult to collect. The chip brush structure occupies a large space, affecting the processing quality and normal operation of the equipment.
The device employs a flip-type brushing device, which drives the brushing assembly to flip. Combined with a limiting structure, it ensures accurate brushing position and prevents the brush bristles from contacting the blades, thus optimizing space and facilitating operation during the brushing process.
It reduces the space occupied by the brush assembly, extends the service life of the bristles and broaches, and improves processing quality and equipment operation stability.
Smart Images
Figure CN224309703U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of broaching machine processing technology, and in particular to a flip-type chip brushing device for broaching machines. Background Technology
[0002] A broaching machine is a machine tool that uses a broach to shape the inner and outer surfaces of a workpiece. Broaching can usually achieve high dimensional accuracy and low surface roughness. During processing, the workpiece is generally fixed, while the broach moves linearly under the drive of the transmission device to complete the processing. This processing method not only produces high-precision products but also has high production efficiency, making it suitable for mass production.
[0003] When using a broaching machine to process a workpiece, a lot of iron filings often adhere to the surface of the broach. If the iron filings accumulate in the tool groove on the surface of the broach, it may adversely affect the normal operation of the broach, and in turn, it may affect the overall processing quality of the workpiece. Therefore, it is necessary to clean the iron filings on the surface of the broach frequently during the broaching process.
[0004] Currently, the main methods for cleaning metal chips from broaches are:
[0005] ① The cleaning method is to use high-pressure gas to blow the surface of the broach. Although this method can effectively clean the broach, the iron filings after cleaning are scattered everywhere and are not easy to collect, which will cause some pollution to the environment. Sometimes the iron filings may even get stuck in the machine, preventing the machine from working properly and affecting the normal operation of production.
[0006] ② A chip brush is used to clean the metal chips on the broach. For example, the secondary pushing mechanism and machine tool disclosed in CN109513995A disclose a vertical broaching machine including a chip brush; the machining station is provided with a broach hole; the secondary sliding assembly includes a connecting plate, two secondary guide rails symmetrically arranged on the slide plate, and two secondary sliders cooperating with the two secondary guide rails; each secondary guide rail is provided with one secondary slider; the connecting plate is connected to both secondary sliders, and the chip brush is disposed on the connecting plate; the slide plate can slide relative to the two secondary sliders through the two secondary guide rails; when the movable end of the primary pushing device extends into position, the center of the chip brush is aligned with the center of the broach hole. However, the chip brush achieves position switching through the cooperation of the slide rails and sliders, but the overall space occupancy of the chip brush ring is relatively high, resulting in a relatively large overall structure of the broaching machine. Utility Model Content
[0007] Based on the shortcomings of existing technology, the purpose of this utility model is to provide a flip-type chip brushing device for broaching machines that is simple in structure, occupies little space and is easy to operate. The flip structure drives the chip brushing disc to flip, thereby realizing the position switching of the chip brushing disc, meeting the requirement that the broach only performs chip brushing in a certain specific state, thereby extending the service life of the bristles and the broach.
[0008] The technical solution adopted by this utility model to solve its technical problem is:
[0009] A flip-type chip brushing device for a broaching machine includes: a drive unit, a connecting rod, a rotating shaft, a chip brush mounting plate, and a chip brush assembly. The drive unit is symmetrically arranged on the main slide of the broaching machine, and its other end is rotatably connected to one end of the connecting rod. The other end of the connecting rod is connected to the end of the rotating shaft. The middle part of the rotating shaft is connected to one end of the chip brush mounting plate. The chip brush assembly is provided on the chip brush mounting plate. When the movable end of the drive unit extends into position, the center of the shaft hole of the chip brush assembly is aligned with the center of the broach hole on the main slide.
[0010] It should be noted that the main slide slides upwards for broaching. Once the main slide has finished broaching the workpiece, i.e., the main slide has slid upwards past the broach, the workpiece has been gripped and removed. This broaching machine uses a tilting chip brushing device. Activating the drive unit extends its piston rod, which drives the rotating shaft to tilt via the connecting rod. The chip brush mounting plate and its assembly mounted on the rotating shaft also tilt accordingly. When the chip brush mounting plate tilts to a horizontal position, the drive unit stops extending, indicating that the chip brushing has reached its position. When the main slide slides back down, the chip brushing assembly can brush the broach. When the main slide returns to its original position and the broach is lifted back to its original position, the drive unit can be activated again to retract its piston rod, which then drives the rotating shaft to tilt via the connecting rod. The chip brush mounting plate and its assembly mounted on the rotating shaft also tilt downwards until the chip brushing assembly is parallel to the main slide (i.e., the chip brush mounting plate tilts to a vertically downward position). At this point, the drive unit can be stopped, and the broach can broach the workpiece again without contacting the chip brushing assembly. The broaching machine of this application uses a flip-type chip brushing device, which brushes chips when the broaching machine is retracting. The broach will not cut the bristles of the chip brushing assembly, and the life of the bristles and the broach is extended accordingly. When the broaching machine is working, the chip brush mounting plate flips to a vertical position, which does not occupy space, facilitates the escort of the upper tool clamp, and facilitates the loading and unloading of the broach.
[0011] In one exemplary embodiment, the brush dust assembly includes a support plate, claws, a brush dust disk, and brush bristles. The support plate is mounted above the brush dust mounting plate, and its lower end face is provided with multiple claws. The brush dust disk is placed between the claws and the support plate, and the brush bristles are evenly distributed circumferentially within the brush dust disk. Preferably, the number of claws is 3 to 6, evenly distributed along the outer circumference of the brush dust disk, and the claws extend inward to support and limit the brush dust disk, and are detachably connected to the support plate by bolts.
[0012] It should be noted that the brushing assembly is modularly assembled, which makes it easy to meet the brushing needs of the broaching machine by quickly replacing the brushing disc after the bristles wear down.
[0013] In one exemplary embodiment, the brush shavings mounting plate has a limiting hole for placing the brush shavings assembly, and a connecting screw hole for connecting to the rotating shaft is provided on the side away from the limiting hole. The limiting hole consists of a circular hole for accommodating the brush shavings disc and a plurality of strip holes communicating with the circular hole. The shape of the strip holes is adapted to the claw and limits the claw. The brush shavings mounting plate also has mounting holes for fixing the support plate.
[0014] It should be noted that the brush assembly mounting plate provides overall positioning and support for the brush assembly. The positioning holes and connecting screw holes, along with the bolts, can limit the brush assembly in multiple dimensions, both axially and circumferentially, to prevent the brush assembly from shifting during use.
[0015] In one exemplary embodiment, the flipping brushing device for the broaching machine further includes a limiting plate. The limiting plate is U-shaped, with one end fixed to the side of the main slide plate facing the brushing assembly, and the other end extending beyond the pivot point above the brush mounting plate, thus limiting the brush mounting plate's position during the flipping process. By limiting the flipping position of the brush mounting plate, the limiting plate prevents excessive flipping, ensuring that the center of the brush assembly's shaft hole aligns with the center of the broach hole after the brush mounting plate flips, preventing tilting that could affect the brushing effect due to positional displacement of the brush assembly relative to the broach.
[0016] In one exemplary embodiment, both ends of the rotating shaft are fixed to the main slide plate by bearing seats, which facilitates the fixation of both ends of the rotating shaft.
[0017] In one exemplary embodiment, the drive device is a pneumatic cylinder or a hydraulic cylinder, and is connected to the main slide plate via a support base.
[0018] Preferably, the drive device is equipped with a magnetic switch. This magnetic switch detects the position of the drive device to determine whether the brush chip mounting plate has been pushed out or retracted into place. The magnetic switch is electrically connected to the broaching machine's control system. By sending a brush chip positioning signal via the magnetic switch, the piston rod of the drive device can be retracted or extended. Compared to existing proximity switches or infrared sensors, the magnetic switch in this embodiment effectively avoids false sensing and control of the drive device due to iron filings splashing during the brushing process, thus improving control accuracy.
[0019] Preferably, the drive device is covered with a protective cover, and the protective cover has an opening on the side of the drive device that is extended. The protective cover can effectively prevent safety accidents from occurring in the drive device during operation.
[0020] The beneficial effects of this utility model are:
[0021] This utility model provides a flip-type chip brushing device for broaching machines, which replaces the existing translational chip brushing device used in broaching machines with a drive device and a rotating shaft, significantly reducing the space occupied by the chip brushing assembly.
[0022] This broaching machine uses a flip-type chip brushing device, which is simpler in structure and easier to operate than a horizontally moving broaching machine chip brushing device. It also facilitates the loading and unloading of the broach. In addition, chip brushing is performed when the main slide plate retracts, so the broach will not cut the bristles, thereby increasing the service life of the bristles and the broaching machine broach. Attached Figure Description
[0023] Figure 1 This is a three-dimensional structural diagram of a flip-type chip brushing device (in standby mode) for a broaching machine according to the present invention.
[0024] Figure 2 This is a three-dimensional structural diagram of a flip-type chip brushing device (chip brushing state) for a broaching machine according to the present invention.
[0025] Figure 3 This is a schematic diagram of the main components of a flip-type chip brushing device for a broaching machine according to this utility model.
[0026] Figure 4 This is a three-dimensional structural diagram of a flip-type chip brushing device for a broaching machine (chip brushing in use state) according to this utility model. Figure 5 This is a schematic diagram of the structure of the brush mounting plate of the flip-type brushing device for broaching machines according to this utility model.
[0027] Figure 6 This is a schematic diagram of the brushing assembly of a flip-type brushing device for a broaching machine according to the present invention.
[0028] Figure 7 This is an exploded view of the brush mounting plate and brush assembly of a flip-type brushing device for a broaching machine according to this utility model.
[0029] In the diagram: 1. Main slide plate; 101. Drawer hole; 2. Protective cover; 3. Drive unit; 4. Rotary shaft; 5. Limiting plate; 6. Connecting rod; 7. Brush and shavings mounting plate; 701. Connecting screw hole; 702. Circular hole; 703. Strip hole; 704. Mounting hole; 8. Brush and shavings assembly; 801. Support plate; 802. Claw; 803. Brush and shavings disc; 804. Brush bristles; 9. Support base; 10. Bearing seat; 11. Drawer.
[0030] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] like Figures 1-7 As shown in this embodiment, a flip-type chip brushing device for a broaching machine includes: a drive device 3, a connecting rod 6, a rotating shaft 4, a chip brush mounting plate 7, and a chip brush assembly 8. The drive device 3 is symmetrically arranged on the main slide plate 1 of the broaching machine, and its other end is rotatably connected to one end of the connecting rod 6. The other end of the connecting rod 6 is connected to the end of the rotating shaft 4. The middle part of the rotating shaft 4 is connected to one end of the chip brush mounting plate 7. The chip brush mounting plate 7 is provided with the chip brush assembly 8. When the movable end of the drive device 3 extends into position, the center of the shaft hole of the chip brush assembly 8 is aligned with the center of the broach hole 101 on the main slide plate 1.
[0033] The brushing assembly 8 includes a support plate 801, claws 802, a brushing disk 803, and brush bristles 804. The support plate 801 is installed above the brushing mounting plate 7, and its lower end face is provided with four claws 802. The four claws 802 are evenly distributed along the outer circumference of the brushing disk 803, and the claws 802 extend inward to support the brushing disk 803 and limit its position. They are detachably connected to the support plate 801 by bolts. The brushing disk 803 is placed between the claws 802 and the support plate 801, and the brush bristles 804 are evenly distributed circumferentially inside the brushing disk 803.
[0034] The brushing assembly 8 is modularly assembled, which allows the brush bristles 804 to be quickly replaced with the brushing disc 803 after wear, thus meeting the brushing needs of the broaching machine.
[0035] The brush shavings mounting plate 7 has a limiting hole for placing the brush shavings assembly 8. On the side away from the limiting hole, there is a connecting screw hole 701 connected to the rotating shaft 4. The limiting hole consists of a circular hole 702 for accommodating the brush shavings disk 803 and a plurality of strip holes 703 communicating with the circular hole 702. The shape of the strip holes 703 is adapted to the claw 802 and limits the claw 802. The brush shavings mounting plate 7 also has a mounting hole 704 for fixing the support plate 801.
[0036] The brush dust mounting plate 7 provides overall positioning and support for the brush dust assembly 8. The positioning holes and connecting screw holes 701, together with the bolts, can limit the brush dust assembly 8 in multiple dimensions, both axially and circumferentially, to prevent the brush dust assembly 8 from shifting during use.
[0037] The flip-type brushing device for the broaching machine also includes a limiting plate 5. The limiting plate 5 is U-shaped, with one end fixed to the side of the main slide plate 1 facing the brushing assembly 8, and the other end extending beyond the rotating shaft 4 above the brush mounting plate 7, thus limiting the brush mounting plate 7 during the flipping process. By limiting the flipping position of the brush mounting plate 7 with the limiting plate 5, the phenomenon of excessive flipping of the brush mounting plate 7 is prevented, thereby ensuring that the center of the shaft hole of the brushing assembly 8 is aligned with the center of the broach hole 101 after the brush mounting plate 7 is flipped, and avoiding tilting that would affect the brushing effect due to positional displacement of the brushing assembly 8 relative to the broach 11.
[0038] The two ends of the rotating shaft 4 are fixed to the main slide plate 1 by bearing seats 10, which facilitates the fixing of the two ends of the rotating shaft 4.
[0039] The drive device 3 is a cylinder, and it is connected to the main slide plate 1 via a support base 9.
[0040] The drive unit 3 is equipped with a magnetic switch, which is used to detect the position of the drive unit 3 to determine whether the brush chip mounting plate 7 has been pushed out or retracted into place. The magnetic switch is electrically connected to the control system of the broaching machine. By sending a brush chip positioning signal through the magnetic switch, the piston rod of the drive unit 3 can be retracted or extended. Compared with existing proximity switches or infrared sensors, the magnetic switch in this embodiment can effectively avoid false sensing caused by iron filings splashing during the brushing process, thus improving the control accuracy.
[0041] The drive device 3 is covered with a protective cover 2. The protective cover 2 has an opening on the side of the drive device 3 that is extended. The protective cover 2 can effectively prevent the drive device 3 from having a safety accident during operation.
[0042] This utility model relates to the working principle and usage method of a flip-type chip brushing device for a broaching machine:
[0043] The main slide plate 1 slides upwards for broaching. Once the main slide plate 1 has completed broaching the workpiece (i.e., it has slid upwards past the broach 11), the workpiece has been gripped and removed. This broaching machine uses a tilting chip removal device. Activating the drive unit 3 extends its piston rod, which drives the rotating shaft 4 to tilt via the connecting rod 6. The chip removal mounting plate 7 and the chip removal assembly 8 mounted on the rotating shaft 4 also tilt accordingly. When the chip removal mounting plate 7 tilts to a horizontal position, the drive unit 3 stops extending, indicating that the chip removal process is complete. As the main slide plate 1 slides back down, the chip removal process is completed. Component 8 can brush chips off the broach 11. When the main slide plate 1 returns to its original position and the broach 11 is lifted back to its original position, the drive device 3 can be restarted to retract its piston rod, which in turn drives the rotating shaft 4 to rotate via the connecting rod 6. The chip brush mounting plate 7 and the chip brush assembly 8 mounted on the rotating shaft 4 also rotate downwards until the chip brush assembly 8 is parallel to the main slide plate 1 (i.e., the chip brush mounting plate 7 is rotated to a vertically downward position). The drive device 3 can then be stopped, and the broach 11 can broach the workpiece again without contacting the chip brush assembly 8. The flip-type chip brushing device for broaching machines of this application brushes chips when the broaching machine retracts. The broach 11 will not cut the bristles 804 of the chip brush assembly 8, and the life of the bristles 804 and the broach 11 is correspondingly extended. When the broaching machine is working, the chip brush mounting plate 7 is rotated to a vertical position, which does not occupy space, facilitates the feeding of the upper tool holder, and facilitates the loading and unloading of the broach 11.
[0044] In use, observe that the main slide plate 1 has slid upwards and passed the broach 11, and the workpiece above the broach hole 101 has been grabbed and removed. Then, start the drive device 3 (such as the cylinder in Embodiment 1). The piston rod of the cylinder extends, and the connecting rod 6 drives the rotating shaft 4 to rotate upwards by 90°. When the brush chip mounting plate 7 is in contact with the limiting plate 5 in Embodiment 1, the brush chip assembly 8 has moved into place, that is, the brush chip assembly 8 is in the position shown in the figure. Figure 2 As shown in the brushing state, the magnetic switch on the drive unit 3 generates a brushing arrival signal, the operator stops the drive unit 3, and then controls the main slide plate 1 to slide down. When the main slide plate 1 slides down, it drives the brushing assembly 8 to move downward relative to the baffle 11, simultaneously brushing away the iron filings on the surface of the baffle 11. Figure 4 As shown.
[0045] Once the main slide plate 1 has slid back to its original position and the pull cutter 11 has extended to its original position, the operator controls the piston rod of the drive shaft to retract, which in turn causes the brush mounting plate 7 to rotate downwards by 90°. The magnetic switch on the drive device 3 generates a brush positioning signal, and the operator stops the drive device 3. The brush mounting plate 7 stops rotating, meaning the brush assembly 8 is in the correct position. Figure 1 The standby state shown facilitates the installation of the workpiece to be processed, and the chip brush assembly 8 does not interfere with the subsequent broaching of the workpiece by the broach 11.
[0046] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is used only to illustrate the technical solution of this utility model, and is not intended to limit the protection scope of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the protection scope of this utility model.
[0047] In the description of this utility model, it should be understood that the terms "upper", "lower", "upper end", "lower end", "upper surface", "lower surface", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0048] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
Claims
1. A flip-type chip brushing device for a broaching machine, characterized in that: include: The drive device (3), connecting rod (6), rotating shaft (4), brush mounting plate (7) and brush assembly (8) are symmetrically arranged on the main slide plate (1) of the broaching machine. The other end of the drive device (3) is rotatably connected to one end of the connecting rod (6). The other end of the connecting rod (6) is connected to the end of the rotating shaft (4). The middle part of the rotating shaft (4) is connected to one end of the brush mounting plate (7). The brush mounting plate (7) is provided with brush assembly (8). When the movable end of the drive device (3) extends into place, the center of the shaft hole of the brush assembly (8) is aligned with the center of the broach hole (101) on the main slide plate (1).
2. The flip-type chip brushing device for a broaching machine as described in claim 1, characterized in that: The brushing assembly (8) includes a support plate (801), claws (802), a brushing disk (803), and brush bristles (804). The support plate (801) is installed above the brushing mounting plate (7), and its lower end face is provided with multiple claws (802). The brushing disk (803) is placed between the claws (802) and the support plate (801). The brush bristles (804) are evenly distributed in the brushing disk (803) in a circular pattern.
3. The flip-type chip brushing device for a broaching machine as described in claim 2, characterized in that: The number of claws (802) is 3 to 6, which are evenly distributed along the outer circumference of the brush chip disk (803). The claws (802) extend inward to support the brush chip disk (803) and limit its position. They are detachably connected to the support plate (801) by bolts.
4. The flip-type chip brushing device for a broaching machine as described in claim 2, characterized in that: The brush shaving mounting plate (7) is provided with a limiting hole for placing the brush shaving assembly (8), and a connecting screw hole (701) for connecting to the rotating shaft (4) is provided on the side away from the limiting hole. The limiting hole is composed of a circular hole (702) for accommodating the brush shaving disc (803) and a plurality of strip holes (703) communicating with the circular hole (702). The shape of the strip holes (703) is adapted to the claw (802) and limits the claw (802). The brush shaving mounting plate (7) is also provided with a mounting hole (704) for fixing the support plate (801).
5. A flip-type chip brushing device for a broaching machine as described in any one of claims 1 to 4, characterized in that: The flip-type brushing device for the broaching machine also includes a limiting plate (5), which is U-shaped. One end of the limiting plate (5) is fixed on the side of the main slide plate (1) facing the brushing assembly (8), and the other end passes over the rotating shaft (4) and is located above the brush mounting plate (7), and can limit the brush mounting plate (7) during the flipping process.
6. The flip-type chip brushing device for a broaching machine as described in claim 1, characterized in that: The two ends of the rotating shaft (4) are fixed to the main slide plate (1) by bearing seats (10).
7. A flip-type chip brushing device for a broaching machine as described in claim 1, characterized in that: The drive device (3) is a cylinder or a hydraulic cylinder, and is connected to the main slide plate (1) through a support base (9).
8. A flip-type chip brushing device for a broaching machine as described in claim 7, characterized in that: The drive device (3) is equipped with a magnetic switch, which is used to detect the position of the drive device (3) to determine whether the brush chip mounting plate (7) has been pushed out or retracted.
9. A flip-type chip brushing device for a broaching machine as described in claim 7, characterized in that: The drive device (3) is covered with a protective cover (2), and the protective cover (2) has an opening on the side of the drive device (3) that is extended.