Drilling device for exhaust pipe two-hole plane flange production

Abstract

The invention discloses a drilling device for exhaust pipe two-hole plane flange production, and relates to the technical field of flange production drilling, the drilling device comprises a drilling machine, the drilling machine is provided with a lifting type drilling machine, the drilling machine is provided with a two-shaft adjustable double-hole drill, the drilling machine is fixedly connected with a conveying frame, and a drill shaft unit of the two-shaft adjustable double-hole drill is fixedly connected with a sleeve; a mounting frame is slidably connected to the middle of the drilling machine, hydraulic rods symmetrically distributed along the mounting frame are fixedly connected to the mounting frame, the mounting frame and the drilling machine are fixed through a screw, and clamping blocks are fixedly connected to the moving ends of the hydraulic rods. The adjustable positioning frame and mounting frame linkage structure is adopted, when flanges of different sizes are replaced, it can be ensured that the flanges are automatically aligned with the centers of the drill shafts only by adjusting the distance between the drill shafts and adjusting the positions of the clamping blocks, the problem of offset drilling is avoided, and operation is easy and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of flange production drilling, and particularly relates to a drilling device for producing two-hole planar flanges of exhaust pipes. Background Art

[0002] Two-hole planar flanges of exhaust pipes are commonly used to connect components such as exhaust manifolds, catalytic converters, and mufflers to ensure tight connections between various components. Their outer contour is usually diamond-shaped, which helps to improve the exhaust gas flow, reduce resistance, and enhance the overall system efficiency. The two symmetrical holes on it are usually controlled by a numerical control system, equipped with a clamping and positioning mechanism and a drilling execution unit. Through automated positioning and drilling processes, the hole position accuracy, hole diameter consistency, and flange structure stability are ensured to meet the requirements of the exhaust pipe system for sealing performance, connection strength, and assembly accuracy, and are widely used in the fields of automotive, mechanical, or industrial equipment manufacturing.

[0003] In drilling processing, in order to shorten the single-piece processing time, a two-axis adjustable double-hole drill is usually used to achieve one-time double-hole forming to meet the requirements of hole positions with symmetrical or fixed spacings in batch production. However, when adjusting the two-hole spacing in different batches of production, although the two-axis adjustable double-hole drill can flexibly adjust the drill bit spacing, it is difficult to reposition the bottom fixture to ensure the centering of the hole positions on the flange after each adjustment. Summary of the Invention

[0004] In order to overcome the disadvantage that it is difficult to reposition the flange position when adjusting the hole spacing of the traditional double-hole drill, the present invention provides a drilling device for producing two-hole planar flanges of exhaust pipes.

[0005] A drilling device for producing two-hole planar flanges of exhaust pipes includes a drill press. A lifting drill is installed on the drill press, and a two-axis adjustable double-hole drill is installed on the drill. A conveying frame is fixedly connected to the drill press. A sleeve is fixedly connected to the drill shaft unit of the two-axis adjustable double-hole drill. An installation frame is slidably connected to the middle of the drill press. Hydraulic rods symmetrically distributed along the installation frame are fixedly connected to the installation frame. The installation frame is fixed to the drill press through a screw rod. The moving end of the hydraulic rod is fixedly connected to a clamping block. Clamping grooves symmetrically distributed along the conveying frame are formed in the conveying frame. The clamping block passes through the adjacent clamping grooves and then clamps the flange directly below the two-axis adjustable double-hole drill. Sliding grooves symmetrically distributed along the conveying frame are formed in the conveying frame. The flange slides in and out along the sliding grooves. An adjustment frame is slidably connected to the installation frame. The adjustment frame contacts the sleeve. A tightening frame for tightening the two-axis adjustable double-hole drill is slidably connected to the adjustment frame.

[0006] As a preferred technical solution of the present invention, it further includes a scale plate. An installation groove is formed on one side of the adjustment frame close to the sleeve. The scale plate is fixedly connected in the installation groove. Fixed rods symmetrically distributed along the adjustment frame are fixedly connected to the adjustment frame. A stop block is slidably connected to the fixed rod. The stop block contacts the adjacent sleeve.

[0007] As a preferred technical solution of the present invention, it further includes an arc-shaped sleeve rod corresponding to the stopper. The arc-shaped sleeve rod is fixedly connected to the corresponding stopper, and the arc-shaped sleeve rod is annularly buckled with the adjacent sleeve.

[0008] As a preferred technical solution of the present invention, the outer end surface of the installation groove protrudes from the scale plate, so that the scale plate is completely embedded in the installation groove.

[0009] As a preferred technical solution of the present invention, the stopper is provided with an observation line for indicating the scale line on the scale plate.

[0010] As a preferred technical solution of the present invention, it further includes a material guiding frame for receiving and guiding the cutting fluid and drilling waste. The material guiding frame is fixedly connected to the drilling machine, and a material guiding groove is opened on the side of the drilling machine close to the downward inclination of the material guiding frame.

[0011] As a preferred technical solution of the present invention, a material guiding hole is opened at the bottom of the sliding groove.

[0012] The present invention has the following advantages: The present invention adopts a linkage structure of an adjustable position adjusting frame and an installation frame. When replacing flanges of different sizes, only the drill shaft spacing needs to be adjusted and the position of the clamping block needs to be adjusted to ensure that the flange is automatically aligned with the center of the drill shaft, avoiding the problem of offset drilling, and the operation is simple and convenient.

[0013] The present invention integrates a sliding groove conveying structure and an automatic reset function, further improving the automation level and the stability of the production rhythm, effectively solving the problems of traditional fixtures relying on manual disassembly and assembly, complex adjustment, and affecting the production line efficiency, and is suitable for the efficient and stable production of large quantities and multiple specifications of flanges.

[0014] When adjusting the spacing of the drill shaft units of the two-axis adjustable double-hole drill of the present invention, the arc-shaped sleeve rod outside the sleeve drives the stopper to slide along the fixed rod, so that the stopper precisely contacts the sleeve outside the eccentric drill shaft, and the spacing after the dynamic adjustment of the drill shaft of the drill shaft unit is accurately measured in combination with the observation line, significantly improving the machining accuracy of the spacing between the two holes on the flange.

[0015] The present invention forms an interlocking structure between the stopper and the arc-shaped sleeve rod, fixing the position of the drill shaft unit and the position adjusting frame while locking the sleeve, effectively preventing the adjusted drill shaft from deflecting or displacing. This structure not only improves the convenience and accuracy of equipment adjustment, but also enhances the stability of the drilling process.

[0016] Through the structural design of the material guiding frame and the material guiding groove, the present invention can centrally collect the excess cutting fluid and drilling waste, realize orderly discharge and recycling treatment, keep the working environment clean, and reduce the subsequent cleaning workload.

[0017] The present invention provides a material guiding hole at the bottom of the sliding groove, enabling the waste generated by drilling to fall downward in a timely manner, preventing the waste from splashing or accumulating in the sliding groove and affecting the smooth transportation of the flange, thereby ensuring the continuity and stability of the entire production process. Brief Description of the Drawings

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0019] Figure 2 is a three-dimensional structural schematic diagram of components such as the drill press, drilling machine, and two-axis adjustable double-hole drill of the present invention.

[0020] Figure 3 is a partial cross-sectional view of the conveying rack of the present invention.

[0021] Figure 4 is a three-dimensional structural schematic diagram of components such as the mounting rack, hydraulic rod, and screw of the present invention.

[0022] Figure 5 is a three-dimensional structural schematic diagram of components such as the position adjustment rack, scale plate, and fixing rod of the present invention.

[0023] Figure 6 is a three-dimensional structural schematic diagram of components such as the stopper and arc-shaped sleeve rod of the present invention.

[0024] Figure 7 is a three-dimensional structural schematic diagram of components such as the position adjustment rack, scale plate, fixing rod, and stopper of the present invention.

[0025] Figure 8 is a three-dimensional structural schematic diagram of components such as the drill press and material guiding rack of the present invention.

[0026] Figure 9 is a three-dimensional structural schematic diagram of the partial drill press, conveying rack, and material guiding rack of the present invention.

[0027] In the reference numerals: 1: drill press, 101: flange, 2: drilling machine, 3: two-axis adjustable double-hole drill, 301: sleeve, 4: conveying rack, 5: mounting rack, 6: hydraulic rod, 7: screw, 8: clamp block, 801: clamping groove, 802: sliding groove, 9: tightening frame, 10: position adjustment rack, 11: scale plate, 12: fixing rod, 13: stopper, 14: arc-shaped sleeve rod, 15: mounting groove, 16: observation line, 17: material guiding rack, 171: material guiding groove, 172: material guiding hole. Detailed Description of the Embodiment

[0028] The following further describes the present invention in detail in conjunction with the drawings and specific embodiments, but does not limit the protection scope and application scope of the present invention.

[0029] Embodiment 1: A drilling device for producing two-hole planar flanges of exhaust pipes, as Figures 1-4As shown in the figure, it includes a drill press 1. An elevating drill 2 is installed in the middle at the rear side of the top of the drill press 1. A two-axis adjustable double-hole drill 3 is installed at the front side of the upper part of the drill 2. The two-axis adjustable double-hole drill 3 includes an upper shell and two relatively independent rotating drill shaft units on the left and right at the lower part. And the drill shafts of each drill shaft unit are located at eccentric positions. When controlling the synchronous rotation of the two drill shaft units on the left and right, the distance between the two eccentric drill shafts can be adjusted. A sleeve 301 is fixedly connected to the drill shaft unit of the two-axis adjustable double-hole drill 3. The eccentric drill shaft of the drill shaft unit passes downward through the adjacent sleeve 301, and the eccentric drill shaft is rotatably connected to the adjacent sleeve 301. A conveying rack 4 for conveying diamond flanges is fixedly connected to the middle of the top of the drill press 1. An installation rack 5 is slidably connected to the middle of the drill press 1 in the front-rear direction. Hydraulic rods 6 symmetrically distributed in the front and rear directions along the installation rack 5 are fixedly connected to the installation rack 5 through bolts. The installation rack 5 and the drill press 1 are tightened and fixed through a screw rod 7. The moving end of the hydraulic rod 6 is fixedly connected to a fixed clamping block 8. The conveying rack 4 is provided with clamping grooves 801 symmetrically distributed in the front and rear directions along the conveying rack 4. The clamping block 8 passes through the adjacent clamping groove 801 and then clamps the flange 101 directly below the eccentric drill shaft of the two-axis adjustable double-hole drill 3. The conveying rack 4 is provided with sliding grooves 802 symmetrically distributed in the front and rear directions along the conveying rack 4. The flange 101 slides into from the left end of the sliding groove 802 and slides out from the right end of the sliding groove 802. An adjusting rack 10 is slidably connected to the upper part of the rear side of the installation rack 5 in the up-down direction. The adjusting rack 10 is in contact with the sleeve 301. A tightening frame 9 is slidably connected to the adjusting rack 10 in the front-rear direction. The tightening frame 9 is used to tighten the upper shell part of the two-axis adjustable double-hole drill 3.

[0030] When using this drilling device for producing two-hole plane flanges of exhaust pipes, first convey the flange 101 to be drilled from the left end of the conveying rack 4 to directly below the drill shaft unit of the two-axis adjustable double-hole drill 3, and then control the hydraulic rods 6 on the front and rear sides to drive the clamping blocks 8 to move synchronously to clamp the front and rear sides of the flange 101. By operating the drill 2, the two-axis adjustable double-hole drill 3 is lowered, and two holes can be drilled on the flange 101. During this process, the two-axis adjustable double-hole drill 3 drives the adjusting rack 10 to slide downward along the installation rack 5 through the tightening frame 9. Subsequently, control the two-axis adjustable double-hole drill 3 to lift, and it drives the adjusting rack 10 to slide upward along the installation rack 5 to reset through the tightening frame 9. Then control the hydraulic rods 6 on the front and rear sides to drive the clamping blocks 8 to move synchronously in the reverse direction to loosen the flange 101. Finally, output the two-hole plane flange 101 from the right end of the conveying rack 4. Repeat this process, and the batch production operation of the two-hole plane flange 101 can be realized.

[0031] If the size of the next batch of flanges 101 changes, it is necessary to adaptively adjust the distance between the drill shaft units of the two-axis adjustable double-hole drill 3 according to the size of the flange 101. Specifically: before the drilling operation, only need to synchronously rotate the drill shaft units of the two-axis adjustable double-hole drill 3 inward or outward, and the distance between the drill shaft units can be reduced or enlarged.

[0032] During the above-mentioned spacing adjustment process, while the eccentric drill shaft of the drill shaft unit rotates, it will also move forward or backward. As a result, when the next batch of flanges 101 moves to the lower part of the drill shaft unit, the flange 101 is not directly below the eccentric drill shaft of the drill shaft unit, which causes the problem of offset drilling of the flange 101. Therefore, further adjustment is required to automatically adjust the flange 101 to be directly below the eccentric drill shaft of the drill shaft unit. The specific adjustment method is as follows: First, loosen the screw rod 7, and push the position adjustment frame 10 to move adaptively forward or backward relative to the tightening frame 9 until the position adjustment frame 10 contacts the sleeve 301 outside the eccentric drill shaft of the adjusted drill shaft unit. During the moving adjustment process, the position adjustment frame 10 drives the mounting frame 5 to move forward or backward, the mounting frame 5 drives the two hydraulic rods 6 thereon to move forward or backward synchronously, the hydraulic rods 6 drive the clamping blocks 8 thereon to move forward or backward synchronously, and the clamping blocks 8 on both sides are ensured not to cross the clamping groove 801 and enter the sliding groove 802 during the moving adjustment process; After the adjustment is completed, tighten the screw rod 7, and then convey the flange 101 to be drilled from the left end of the conveying frame 4 to the right between the two clamping blocks 8. Then, control the hydraulic rods 6 on the front and rear sides to drive the clamping blocks 8 to move synchronously towards the side close to the flange 101. The clamping block 8 that first contacts the flange 101 will push the flange 101, and then the other clamping block 8 will contact the flange 101. At this time, the adjusted flange 101 is directly below the drill shaft unit of the two-axis adjustable double-hole drill 3.

[0033] Therefore, the present invention only needs to adjust the drill shaft spacing and the position of the clamping block 8 to ensure that the flange 101 is automatically aligned with the drill shaft center, avoiding the problem of offset drilling, and the operation is simple and convenient. Then, the punching operation can be carried out. After the punching is completed, continue to output the two-hole planar flange 101 to the right. During the rightward movement of the flange 101, its diamond-shaped side will be completely reset into the sliding groove 802 under the extrusion of the right edge of the clamping groove 801, and then slide out of the right end of the conveying frame 4 along the sliding groove 802.

[0034] Embodiment 2: On the basis of Embodiment 1, as Figures 5-7 shown, it further includes a scale plate 11. An installation groove 15 is opened on one side of the position adjustment frame 10 close to the sleeve 301. The scale plate 11 is fixedly connected in the installation groove 15. Fixed rods 12 symmetrically distributed along the left and right directions of the position adjustment frame 10 are fixedly connected to the front side of the position adjustment frame 10. A stop block 13 is slidably connected to the fixed rods 12 in the left and right directions. The stop block 13 contacts the adjacent sleeve 301. An arc-shaped sleeve rod 14 is fixedly connected to the stop block 13, and the arc-shaped sleeve rod 14 is annularly buckled with the adjacent sleeve 301. The front outer end surface of the installation groove 15 protrudes from the scale plate 11, so that the scale plate 11 is completely embedded in the installation groove 15 to prevent the scale lines on the scale plate 11 from being worn due to the mutual impact between the scale plate 11 and the sleeve 301 when the position adjustment frame 10 contacts the sleeve 301. An observation line 16 is provided on the stop block 13, and the observation line 16 is used to indicate the scale lines on the scale plate 11.

[0035] When adjusting the eccentric drill shaft spacing of the drill shaft unit of the two-axis adjustable double-hole drill 3, the sleeve 301 outside the drill shaft unit drives the block 13 to slide synchronously left or right along the fixed rod 12 through the arc-shaped sleeve rod 14. By observing the observation lines 16 on the blocks 13 on both the left and right sides, the dynamically adjusted spacing of the eccentric drill shafts of the drill shaft unit of the two-axis adjustable double-hole drill 3 can be accurately measured, thereby improving the accuracy of the double-hole spacing of the flange 101. In addition, the block 13 fixes the sleeve 301 through the arc-shaped sleeve rod 14, achieving the effect of interlocking the drill shaft unit and the positioning frame 10, preventing the adjusted drill shaft unit from deflecting again. At the same time, before tightening the screw 7, the positioning frame 10 will not move forward or backward randomly, further improving the accuracy of the adjustment.

[0036] Example 3: On the basis of Example 2, as Figure 3 、 Figure 8 and Figure 9 shown, it further includes a material guiding frame 17 for receiving and guiding the cutting fluid and drilling waste. The material guiding frame 17 is fixedly connected to the drill press 1. During the drilling process, cutting fluid is applied to cool and lubricate the drill shaft unit and the flange 101 workpiece. The excess cutting fluid and the waste generated by drilling will fall into the material guiding frame 17. The material guiding frame 17 is lower in the front and higher in the rear. A material guiding groove 171 is opened on the front side of the drill press 1. The material guiding frame 17 guides the cutting fluid flowing forward and downward into the material guiding groove 171 for collection and treatment. A material guiding hole 172 is opened at the bottom of the chute 802. In order to prevent the waste generated by drilling from splashing into the chute 802 and affecting the smooth transportation of the flange 101, a hole is dug at the bottom of the chute 802, so that the waste falls downward through the material guiding hole 172.

[0037] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A drilling device for producing a two-hole planar flange of an exhaust pipe, comprising a drilling machine (1), the drilling machine (1) is equipped with a lifting drilling rig (2), the drilling rig (2) is equipped with a two-axis adjustable double-hole drill (3), and the drilling machine (1) is fixedly connected with a conveying frame (4). It is characterized in that A sleeve (301) is fixedly connected to the drill shaft unit of the two-axis adjustable double-hole drill (3). An installation frame (5) is slidably connected to the middle of the drilling machine (1). The installation frame (5) is fixedly connected with hydraulic rods (6) symmetrically distributed along the installation frame (5). The installation frame (5) is fixed to the drilling machine (1) through a screw rod (7). The moving end of the hydraulic rod (6) is fixedly connected with a clamping block (8). The conveying frame (4) is provided with clamping grooves (801) symmetrically distributed along the conveying frame (4). The clamping block (8) passes through the adjacent clamping grooves (801) and then clamps the flange (101) directly below the two-axis adjustable double-hole drill (3). The conveying frame (4) is provided with sliding grooves (802) symmetrically distributed along the conveying frame (4). The flange (101) slides in and out along the sliding grooves (802). An adjustment frame (10) is slidably connected to the installation frame (5). The adjustment frame (10) contacts the sleeve (301). The adjustment frame (10) is slidably connected with a tightening frame (9) for tightening the two-axis adjustable double-hole drill (3).

2. The drilling device for producing the two-hole planar flange of the exhaust pipe according to claim 1, characterized in that, It further includes a scale plate (11). An installation groove (15) is opened on one side of the adjustment frame (10) close to the sleeve (301). The scale plate (11) is fixedly connected in the installation groove (15). The adjustment frame (10) is fixedly connected with fixing rods (12) symmetrically distributed along the adjustment frame (10). A stop block (13) is slidably connected to the fixing rod (12). The stop block (13) contacts the adjacent sleeve (301).

3. The drilling device for producing the two-hole planar flange of the exhaust pipe according to claim 2, wherein, It further includes an arc-shaped sleeve rod (14) corresponding to the stop block (13). The arc-shaped sleeve rod (14) is fixedly connected to the corresponding stop block (13). The arc-shaped sleeve rod (14) is annularly buckled with the adjacent sleeve (301).

4. The drilling device for producing the two-hole planar flange of the exhaust pipe according to claim 3, wherein, The outer end face of the installation groove (15) protrudes from the scale plate (11), so that the scale plate (11) is completely embedded in the installation groove (15).

5. The drilling device for producing the two-hole flat flange of the exhaust pipe according to claim 4, characterized in that, The stop block (13) is provided with an observation line (16), and the observation line (16) is used to indicate the scale line on the scale plate (11).

6. The drilling device for producing the two-hole planar flange of the exhaust pipe according to claim 5, characterized in that, It further includes a material guiding frame (17) for receiving and guiding the cutting fluid and drilling waste. The material guiding frame (17) is fixedly connected to the drilling machine (1). A material guiding groove (171) is opened on one side of the drilling machine (1) that slopes downward close to the material guiding frame (17).

7. The drilling device for producing the two-hole planar flange of the exhaust pipe according to claim 6, wherein, A material guiding hole (172) is opened at the bottom of the sliding groove (802).

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