Multi-hole simultaneous drilling equipment for steering column

Abstract

The utility model relates to the technical field of motorcycle steering column machining devices, in particular to steering column multi-hole simultaneous drilling equipment which comprises a machine base arranged on a drilling machine workbench, a sliding base connected to the workbench in a sliding mode, a clamping assembly fixed to the machine base and a drill bit installed on the sliding base. The clamping assembly comprises a mounting plate located on the machine base and a positioning unit fixed to the mounting plate. The positioning unit comprises a boss fixed to the mounting plate, a lower supporting assembly, a side supporting assembly and a pressing assembly. The number of the bosses is two, the bosses are symmetrically arranged relative to the center line of the mounting plate, and the number of the lower supporting assemblies is two, and the lower supporting assemblies are arranged opposite to the two bosses correspondingly. The side supporting assembly is located on the side face of one boss, and the pressing assembly is located above the middle position of the two bosses. According to the multi-hole synchronous drilling device, the workpiece can be stably clamped, the workpiece is prevented from loosening in the multi-hole synchronous drilling process, and therefore the drilling machining precision is improved, and the product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motorcycle steering column processing devices, specifically to a multi-hole simultaneous drilling device for steering columns. Background Technique

[0002] The motorcycle steering column is an important component on the motorcycle head, a component for connecting the handlebar and the front fork shock absorber, and can transmit the steering force when the driver turns the handlebar to the front wheels.

[0003] The steering column mainly includes a lower joint plate and a column fixed on the lower joint plate. During actual production, three holes need to be drilled on the lower joint plate. The column is welded and fixed in the middle hole, and the mounting holes on both sides of the column are used to mount the shock absorber. To ensure the assembly accuracy of the steering column, the conventional process usually uses a special drilling device to drill the three holes simultaneously. For example, in the prior art "Multi-hole Simultaneous Drilling Device for Motorcycle Steering Column Connecting Plate" (Publication No.: CN201960154U), multiple drill bits are driven to rotate synchronously by the lathe spindle to drill the three holes on the steering column connecting plate pressed on the machine tool simultaneously. However, the prior art still has the following technical problems:

[0004] Since during the drilling process of the drill bit, the drill bit feeds in the horizontal direction, and the drilling resistance is in the horizontal direction, while the device in the prior art clamps the workpiece by screwing the stud to press the workpiece for fixation, and the pressing force of the workpiece is in the vertical direction. Therefore, during the drilling process, due to the drilling resistance, the workpiece is prone to instability, and when drilling three holes simultaneously, the drilling resistance is greater than that during conventional single-hole drilling, and the workpiece is very easy to loosen. The loosening of the workpiece will cause a large position error of the drilled holes, resulting in the inability to assemble the steering column. Content of the Utility Model

[0005] The utility model provides a multi-hole simultaneous drilling device for steering columns, which can solve the problem that the drilling device in the prior art cannot stably clamp the workpiece, and the workpiece is prone to loosen during the drilling process, resulting in deviation of the position of the drilled holes and inability to assemble the steering column.

[0006] The present application provides the following technical solution: A multi-hole simultaneous drilling device for steering columns, including a machine base arranged on the drill press workbench, a sliding seat slidably connected to the workbench, a clamping assembly fixed on the machine base, and a drill bit installed on the sliding seat;

[0007] The clamping assembly includes a mounting plate located on the machine base and a positioning unit fixed on the mounting plate. The positioning unit includes a boss fixed on the mounting plate, a lower support assembly, a side support assembly, and a pressing assembly;

[0008] There are two bosses, which are symmetrically arranged with respect to the center line of the mounting plate. There are two groups of lower support components, which are respectively arranged opposite to the two bosses; the side support component is located on the side of one of the bosses, and the pressing component is located above the middle position between the two bosses.

[0009] Beneficial effects:

[0010] Improve positioning stability and product quality: Since three holes need to be drilled simultaneously on the lower connecting plate of the steering column, the drilling resistance is very large. This device clamps and positions the lower connecting plate through the positioning unit, and the bosses are used to vertically support the lower connecting plate, so that during the drilling process, the supporting force of the bosses on the lower connecting plate can offset the drilling force and prevent the lower connecting plate from sliding horizontally; the lower support components are used to support the two ends of the bottom of the lower connecting plate, the side support component supports the side of the lower connecting plate, and the pressing component presses the upper part of the lower connecting plate; thus, the lower connecting plate is locked in three directions: below, on the side, and above, preventing the lower connecting plate from sliding in the vertical plane; compared with the fixture structure of the prior art, in this solution, the workpiece is stably clamped through the positioning unit, which can prevent the workpiece from loosening during the synchronous drilling of multiple holes, thereby improving the drilling processing accuracy and enhancing the product quality.

[0011] Furthermore, the positioning unit further includes a square platform fixed on the mounting plate, and the square platform is close to the pressing component and located below the pressing component.

[0012] Beneficial effects: The square platform is used to form a support with the middle part of the lower connecting plate. Under the combined action of the square platform and the bosses, the supporting strength of the lower connecting plate is enhanced, and the stability during drilling processing is improved.

[0013] Furthermore, the boss is integrally formed with the mounting plate, and the boss is circular, and there is a through hole passing through the mounting plate in the middle of the boss.

[0014] Beneficial effects: The circular shape of the boss is convenient for supporting the part of the lower connecting plate where holes need to be drilled. A through hole is provided in the middle of the boss. When it is necessary to deepen the drilling depth of the drill bit, the through hole on the mounting plate can accommodate the drill bit, avoiding interference between the drill bit and the mounting plate, which is beneficial for the drill bit to completely drill through the hole of the lower connecting plate.

[0015] Furthermore, the lower support component includes a lower support block fixed on the mounting plate and a lower screw threadedly connected to the lower support block, and the threaded end of the lower screw faces vertically upward.

[0016] Beneficial effects: The lower screw can form a point support for the lower connecting plate, and at the same time, by screwing the lower screw, the height of the support can be quickly adjusted to adapt to workpieces of different sizes, improving the versatility.

[0017] Further, the side support assembly includes a side support block fixed on the mounting plate and a side screw threadedly connected to the side support block, and the threaded end of the side screw faces horizontally towards the middle of the mounting plate.

[0018] Beneficial effects: The side screw forms a support and positioning for the side of the lower connecting plate. When placing the lower connecting plate onto the lower screw, relying on the restriction of the side screw, it is beneficial to quickly position the lower connecting plate, thereby reducing the feeding time and improving the processing efficiency.

[0019] Further, the pressing assembly includes a positioning block fixed on the mounting plate and a pressing screw threadedly connected to the positioning block, and the threaded end of the pressing screw is inclined towards the side support block.

[0020] Beneficial effects: The threaded end of the pressing screw is inclined towards the side support block. When the pressing screw is inclined, the vertical component of the pressing force presses the lower connecting plate down onto the lower screw, and at the same time, the horizontal component of the pressing force presses the lower connecting plate against the side screw, thereby realizing multi-directional locking and positioning of the lower connecting plate to improve the positioning stability. Description of the Drawings

[0021] Figure 1 It is the main structural view of the present utility model.

[0022] Figure 2 is Figure 1 the enlarged view of the clamping assembly A in

[0023] Figure 3 is Figure 2 the right view of

[0024] Figure 4 is Figure 3 the top view of

[0025] Figure 5 is Figure 3 the view after clamping the lower connecting plate. Detailed Description of the Embodiment

[0026] The following is further detailed through specific embodiments:

[0027] The marks in the attached drawings of the specification include: workbench 1, machine base 2, drill bit 3, sliding seat 4, connecting plate 5, support plate 6, mounting plate 7, pressing screw 8, positioning block 9, side support block 10, side screw 11, lower support block 12, lower screw 13, convex platform 14, lower connecting plate 15, square platform 16, processing hole 17.

[0028] Embodiment 1

[0029] As Figures 1 to 5As shown in the figure, the multi-hole drilling device for the steering column includes a base 2 arranged on the drilling machine workbench 1, a slide seat 4 slidably connected to the workbench 1, a clamping assembly A fixed on the base 2, and a drill bit 3 installed on the slide seat 4. The drill bit 3 rotates synchronously under the drive of the main shaft of the drilling machine. A slide rail is arranged on the workbench 1, and the slide seat 4 is slidably connected to the slide rail. The slide seat 4 moves horizontally along the slide rail on the workbench 1 driven by a lead screw.

[0030] As Figure 1 and Figure 2 shown, a connecting plate 5 is screwed to the base 2, and a support plate 6 is screwed to the connecting plate 5. As Figures 2 to 4 shown, the clamping assembly includes a mounting plate 7 screwed and fixed to the support plate 6 and a positioning unit fixed on the mounting plate 7. The positioning unit is as Figure 3 shown, and includes a boss 14 fixed on the mounting plate 7, a lower support assembly, a side support assembly, a pressing assembly, and a square platform 16.

[0031] As Figure 3 and Figure 4 shown, there are two bosses 14, which are symmetrically arranged with respect to the center line of the mounting plate 7, and the boss 14 is integrally formed with the mounting plate 7. The boss 14 is circular, and a through hole penetrating the mounting plate 7 is provided in the center of the boss 14. The purpose of setting the through hole is that in order to ensure that the hole can be drilled through completely, sometimes it is necessary to deepen the drilling depth of the drill bit. In this way, the through hole on the mounting plate can accommodate the drill bit to avoid interference between the drill bit and the mounting plate. There are two groups of lower support assemblies. The lower support assembly includes a lower support block 12 screwed and fixed to the mounting plate 7 and a lower screw 13 threadedly connected to the lower support block 12. The threaded end of the lower screw 13 faces vertically upward, and the lower support assemblies are respectively arranged corresponding to the two bosses 14. There is one side support assembly. The side support assembly includes a side support block 10 and a side screw 11 threadedly connected to the side support block 10. The side support block 10 is located on the side of one of the bosses 14. In this embodiment, the side support block 10 is arranged on the Figure 3 left side of the mounting plate 7 in the figure. In fact, the orientation can be selected according to requirements. The threaded end of the side screw 11 faces horizontally toward the middle of the mounting plate 7. The pressing assembly includes a positioning block 9 fixed on the mounting plate 7 and a pressing screw 8 threadedly connected to the positioning block 9. The positioning block 9 is located above the middle position between the two bosses 14. The threaded end of the pressing screw 8 is inclined toward the side support block 10. The position of the pressing assembly on the mounting plate 7 and the inclination angle of the pressing screw 8 are set according to the structural shape of the product, but it is necessary to ensure that the pressing screw 8 is inclined toward the direction where the side screw 11 is located, so that when the pressing screw 8 is tightened, it can cooperate with the lower screw 13 and the side screw 11 to lock the workpiece. There is one square platform 16, and the square platform 16 is close to the pressing assembly and is located on one side below the pressing assembly.

[0032] The usage method of this device is as follows:

[0033] The shape of the lower connecting plate 15 is as Figure 5 shown. When it is necessary to clamp the lower connecting plate 15, the lower connecting plate 15 is leaned against the boss 14 on the mounting plate 7. The boss 14 just forms a supporting abutment against the part of the lower connecting plate 15 that needs to be drilled. The square platform 16 just forms a supporting abutment against the drilling part in the middle of the lower connecting plate 15. At the same time, the bottom of the lower connecting plate 15 is located above the two lower screws 13, and the side of the lower connecting plate 15 is leaned against the threaded end of the side screw 11, so that the two lower screws 13 and one side screw 11 respectively form point supports against the bottom ends and the side of the lower connecting plate 15. For products of different sizes, the side screw 11 and the lower screws 13 can be screwed to adjust the support points of each screw to the most suitable position for processing; it should be noted that the square platform 16 only supports the edge position of the drilling part in the middle of the lower connecting plate 15. Therefore, when the drill bit 3 drills through the processing hole 17 in the middle of the lower connecting plate 15, the square platform 16 will not block the feed of the drill bit 3. In addition, since the thickness of the drilling part in the middle of the lower connecting plate 15 is thinner than that of the drilling parts at both ends, there is no need to set through holes on the mounting plate 7 corresponding to the position of the processing hole 17 in the middle of the lower connecting plate 15, and it can also ensure that the drill bit 3 will not contact the mounting plate 7 when drilling through the processing hole 17 in the middle of the lower connecting plate 15. Then use a tool to tighten the pressing screw 8 so that the threaded end of the pressing screw 8 presses the lower connecting plate 15 from the upper oblique direction; the locking and positioning of the lower connecting plate 15 are completed. Then the drill press can be started, and the drill press controls Figure 1 the drill bit 3 in it to approach the lower connecting plate 15 in the horizontal direction, and at the same time drill the three processing holes 17 on the lower connecting plate 15. After the drilling is completed, the slide block 4 returns to its original position, and the lower connecting plate 15 after processing can be taken off by loosening the pressing screw 8.

[0034] The above are only the embodiments of the present invention. The present invention is not limited to the fields involved in this embodiment case. Common knowledge such as specific structures and characteristics known in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. A multi-hole drilling device for a steering column, comprising a machine base arranged on a drilling machine workbench, a slide seat slidably connected to the workbench, a clamping assembly fixed on the machine base, and a drill bit installed on the slide seat, characterized in that: The clamping assembly includes a mounting plate located on the machine base and a positioning unit fixed on the mounting plate, and the positioning unit includes a boss fixed on the mounting plate, a lower support assembly, a side support assembly and a clamping assembly; There are two bosses, which are symmetrically arranged relative to the center line of the mounting plate. There are two groups of lower support components, which are respectively arranged opposite to the two bosses; the side support component is located on the side of one of the bosses, and the clamping component is located above the middle position of the two bosses.

2. The directional column multi-hole drilling equipment according to claim 1, characterized in that: The positioning unit also includes a square platform fixed on the mounting plate, and the square platform is close to the pressing assembly and located below the pressing assembly.

3. The directional column multi-hole drilling equipment according to claim 2, characterized in that: The boss is integrally formed with the mounting plate, and the boss is circular, and a through hole penetrating the mounting plate is arranged in the middle of the boss.

4. The directional column multi-hole drilling equipment according to claim 3, characterized in that: The lower support assembly comprises a lower support block fixed on the mounting plate and a lower screw threadedly connected to the lower support block, wherein the threaded end of the lower screw faces vertically upward.

5. The directional column multi-hole drilling equipment according to claim 4, characterized in that: The side support assembly comprises a side support block fixed on the mounting plate and a side screw threadedly connected to the side support block, wherein the threaded end of the side screw is horizontally oriented toward the middle of the mounting plate.

6. The directional column multi-hole simultaneous drilling equipment according to claim 5, characterized in that: The clamping assembly comprises a positioning block fixed on the mounting plate and a clamping screw threadedly connected to the positioning block, and the threaded end of the clamping screw is inclined toward the side support block.

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