Drilling reamer

Abstract

The utility model relates to the technical field of automobile parts, and provides a drilling reamer which comprises a first drill bit section and a reamer section, the diameter of the reamer section is larger than that of the first drill bit section, and the reamer section is connected with the first drill bit section through a first step part; and the chip discharging groove spirally extends along the reamer section from the step end face, connected with the reamer section, of the first step part. According to the drilling reamer, a drill bit and a reamer are integrated, the drilling function is executed through the first drill bit section located at the front end, the reaming function is executed through the reamer section located at the rear end, needed holes are machined and formed at a time, the production efficiency is improved, the cutter cost is reduced, the process flow is simplified, and the cutter management difficulty is lowered; the reamer section is connected with the first drill bit section through the first step part, and the cutting wall thickness of the reamer section can be adjusted by adjusting the thickness of the first step part, so that the abrasion of the reamer section is reduced, the finish machining precision of the reamer section is improved, and the hole machining quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a drill reamer. Background Art

[0002] There are many hole processing scenarios in automobile parts. In most hole processing processes, it is necessary to use a drill to perform rough processing on the hole first, and then use a reamer to perform fine processing on the hole to process the required hole.

[0003] For example, refer to Figure 1 The machining process of the guide rod hole 11 of the illustrated caliper bracket 10 includes: firstly using a drill to machine the rough outline of the guide rod hole 11, and then using a reamer to fine-machine the guide rod hole 11, so as to form a guide rod hole 11 that meets the requirements by combining the rough machining and fine machining of the drill and reamer.

[0004] With the rapid development of the automotive industry, the requirements for production costs, processing efficiency, process control, etc. are getting higher and higher. Using multiple tools to process holes in batches will lead to long production cycles, high tool costs, and difficult process and tool management, which is not in line with the development trend of modern manufacturing.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the utility model, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] In view of this, the utility model provides a drill reamer which integrates a drill bit and a reamer into one, and can process and form the required holes at one time, thereby improving production efficiency, reducing tool costs, and simplifying the process flow and tool management difficulty, which is in line with the development trend of the modern manufacturing industry.

[0007] One aspect of the utility model provides a drill reamer, comprising: a first drill bit section and a reamer section, wherein the diameter of the reamer section is larger than the diameter of the first drill bit section, and the reamer section is connected to the first drill bit section via a first step portion; and a chip groove, which spirally extends along the reamer section from the step end surface where the first step portion is connected to the reamer section.

[0008] The drill reamer of the utility model integrates a drill bit and a reamer in one body, realizes the drilling function by the first drill bit section located at the front end, and performs rough processing on the hole to be processed, and realizes the reaming function by the reamer section located at the rear end, and performs fine processing on the hole to be processed, thus the holes required for forming can be processed at one time, and there is no need to change the tool during the processing, thereby improving production efficiency, reducing tool costs, simplifying the process flow and the difficulty of tool management, and conforming to the development trend of the modern manufacturing industry.

[0009] The reamer segment is connected to the first drill segment through a first step portion. The cutting wall thickness of the reamer segment can be adjusted by adjusting the thickness of the first step portion. The cutting wall thickness of the reamer segment is preferably set to be smaller, thereby reducing the wear of the reamer segment, improving the finishing accuracy of the reamer segment, and improving the hole processing quality.

[0010] The drill reamer is also provided with a chip groove extending spirally along the reamer section from the step end face where the first step portion is connected to the reamer section, so that the chips generated during the hole processing, especially the drilling process, are discharged out of the hole along the chip groove, reducing chip sticking to the tool and improving the internal smoothness of the hole, so as to produce qualified products.

[0011] In some embodiments, the drill reamer further comprises: a cooling pipeline built into the drill reamer, wherein the cooling pipeline comprises a plurality of injection ports spaced apart at the front end of the first drill bit section and / or the front end of the reamer section.

[0012] The cooling pipeline can be connected to the high-pressure water circuit of the processing machine. Multiple injection ports of the cooling pipeline are arranged at intervals at the front end of the first drill section and / or the reamer section to realize multi-point high-pressure water spraying through the injection ports. On the one hand, it effectively cools the processing part to avoid overheating affecting the processing. On the other hand, it effectively flushes the debris generated during the processing and discharges the debris out of the hole along the chip removal groove, thereby improving the cooling and chip removal effect, improving the product processing accuracy, and meeting the high-quality processing requirements.

[0013] In some embodiments, the extension direction of the injection port is not parallel to the axial direction of the drill reamer, and the injection port includes multiple types whose extension directions form different angles with the axial direction of the drill reamer.

[0014] The extension direction of the jet port is not parallel to the axial direction of the drill and reamer, which helps to push the chips generated by the processing in the opposite direction, so that the chips are discharged out of the hole along the chip removal groove; the jet port includes multiple types whose extension directions are at different angles to the axial direction of the drill and reamer, so that multi-directional high-pressure water spraying can be achieved through the jet port, effectively improving the cooling and chip removal effect, improving the product processing accuracy, and meeting high-quality processing requirements.

[0015] In some embodiments, the injection port includes a first type of injection port disposed at the front end of the first drill bit section and extending toward the front end of the drill reamer, and a second type of injection port disposed at the front end of the reamer section and extending toward the rear end of the drill reamer.

[0016] The first type of jet nozzle mainly plays the role of cooling the processing part, and the second type of jet nozzle mainly plays the role of promoting chip removal. By coordinating the first type of jet nozzle with the second type of jet nozzle, the cooling and chip removal effect is effectively improved, the product processing accuracy is improved, and high-quality processing requirements are met.

[0017] In some embodiments, the second type of injection ports are disposed in the chip flute.

[0018] There is a certain gap between the chip groove and the hole wall. The second type of injection port is arranged in the chip groove to facilitate flushing of the debris generated during the processing so that the debris is discharged out of the hole along the chip groove.

[0019] In some embodiments, the reamer segment is formed as a double-edged blade including a reaming edge and a wiper edge.

[0020] In this way, the reaming section can simultaneously realize reaming processing and finishing processing, thereby improving production efficiency, simplifying process flow and tool management difficulty.

[0021] In some embodiments, the drill reamer further comprises: a second drill bit segment, the diameter of the second drill bit segment is larger than the diameter of the reamer segment, and the second drill bit segment is connected to the reamer segment via a second step portion.

[0022] The diameter of the port part of the guide rod hole of the caliper bracket waiting to be processed is slightly larger than the diameter of the main part of the hole. By forming a second drill section at the rear end of the reamer section, the port part of the formed hole can be processed simultaneously during the hole processing process without changing the tool for secondary processing, thereby improving production efficiency, simplifying the process flow and the difficulty of tool management.

[0023] In some embodiments, the chip flute spirally extends along the reamer segment and the second drill bit segment to a rear end of the second drill bit segment.

[0024] The chip removal groove spirally extends to the rear end of the second drill bit section, so that the debris generated during the hole machining process can be smoothly discharged out of the hole along the chip removal groove.

[0025] In some embodiments, the drill reamer is used to process the guide rod hole of the caliper bracket; wherein the size of the reamer segment matches the size of the main portion of the guide rod hole.

[0026] The guide rod hole of the caliper bracket is processed by using the drill reamer integrating the drill bit section and the reamer section, so that the guide rod hole can be processed and formed in one step without changing the tool during the processing, thereby improving production efficiency and simplifying the process flow and tool management.

[0027] The above-mentioned drill reamer is used to process the guide rod hole of the caliper bracket. The parameters of the first step portion can be adjusted to improve the finishing accuracy of the reamer section and the processing quality of the guide rod hole. The chip removal groove can effectively discharge the chips generated during the processing of the guide rod hole to improve the internal finish of the guide rod hole and improve the processing quality of the guide rod hole.

[0028] In some embodiments, the drill reamer further comprises a second drill bit segment connected to the reamer segment and having a diameter greater than that of the reamer segment, wherein a size of the second drill bit segment matches a size of a port portion of the guide rod hole.

[0029] Through the second drill bit section, the end part of the guide rod hole can be processed synchronously during the processing of the main part of the guide rod hole, without the need for tool change for secondary processing, thus improving production efficiency, simplifying the process flow and the difficulty of tool management.

[0030] Compared with the prior art, the beneficial effects of the present invention include at least:

[0031] The drill reamer of the utility model integrates a drill bit and a reamer in one body, realizes the drilling function by the first drill bit section located at the front end, and performs rough processing on the hole to be processed, and realizes the reaming function by the reamer section located at the rear end, and performs fine processing on the hole to be processed, thus the holes required for forming can be processed at one time, and there is no need to change the tool during the processing, thereby improving production efficiency, reducing tool costs, simplifying the process flow and the difficulty of tool management, and conforming to the development trend of the modern manufacturing industry.

[0032] The reamer segment is connected to the first drill segment through a first step portion. The cutting wall thickness of the reamer segment can be adjusted by adjusting the thickness of the first step portion. The cutting wall thickness of the reamer segment is preferably set to be smaller, thereby reducing the wear of the reamer segment, improving the finishing accuracy of the reamer segment, and improving the hole processing quality.

[0033] The drill reamer is also provided with a chip groove extending spirally along the reamer section from the step end face where the first step portion is connected to the reamer section, so that the chips generated during the hole processing, especially the drilling process, are discharged out of the hole along the chip groove, reducing chip sticking to the tool and improving the internal smoothness of the hole, so as to produce qualified products.

[0034] The drill reamer of the utility model is suitable for the guide rod holes of caliper brackets and other suitable hole processing scenarios of automobile parts. It can process and form the required holes at one time, improve production efficiency, enhance processing accuracy, and ensure the quality of processed products.

[0035] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present invention, and together with the specification, are used to explain the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 A schematic diagram of the structure of a caliper bracket is shown;

[0038] Figure 2 A schematic diagram showing the internal structure of the guide rod hole of the caliper bracket;

[0039] Figure 3 A schematic diagram showing the structure of a drill reamer in an embodiment of the utility model is shown;

[0040] Figure 4 A schematic structural diagram of a cutter head of a drill reamer in an embodiment of the utility model is shown;

[0041] Figure 5 A schematic structural diagram of another cutter head of a drill reamer in an embodiment of the utility model is shown;

[0042] Figure 6 A schematic structural diagram showing the drill reamer extending into the guide rod hole in an embodiment of the utility model is shown. DETAILED DESCRIPTION

[0043] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein. Instead, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art.

[0044] The accompanying drawings are only schematic illustrations of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar structures, and thus their repeated description will be omitted.

[0045] The words "first", "second" and similar words used in the specific description do not indicate any order, quantity or importance, but are only used to distinguish different components. The orientation or positional relationship indicated by the terms "front" and "rear" etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model. The term "plurality" means two or more, unless otherwise clearly and specifically defined. In addition, in the description of the present utility model, when it is said that a device is "connected" to another device, this includes not only the case of direct connection, but also the case of indirect connection through other elements.

[0046] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in different embodiments may be combined with each other.

[0047] Figure 3 The structure of the drill reamer in the embodiment of the utility model is shown in FIG. Figure 4 A cutter head structure of a drill reamer in the embodiment of the utility model is shown; Figure 3 and Figure 4 As shown, the drill reamer provided by the embodiment of the utility model comprises:

[0048] A first drill bit section 21 and a reamer section 22, wherein a diameter D2 of the reamer section 22 is larger than a diameter D1 of the first drill bit section 21, and the reamer section 22 is connected to the first drill bit section 21 via a first step portion P1;

[0049] The chip removal groove 23 extends spirally along the reamer segment 22 from the step end surface where the first step portion P1 is connected to the reamer segment 22 .

[0050] The drill reamer of the utility model integrates a drill bit and a reamer in one body, and realizes the drilling function by the first drill bit section 21 located at the front end, and performs rough processing on the hole to be processed, and realizes the reaming function by the reamer section 22 located at the rear end, and performs fine processing on the hole to be processed. In this way, the holes required for forming can be processed at one time, and there is no need to change the tool during the processing, thereby improving production efficiency, reducing tool costs, simplifying the process flow and the difficulty of tool management, which is in line with the development trend of the modern manufacturing industry.

[0051] The front end refers to the blade end 20a, and the rear end refers to the handle end 20b.

[0052] The reamer segment 22 is connected to the first drill segment 21 through the first step portion P1. By adjusting the thickness of the first step portion P1, the cutting wall thickness of the reamer segment 22 can be adjusted (the cutting wall thickness refers to the difference between the radius of the reamer segment 22 and the radius of the first drill segment 21). The cutting wall thickness of the reamer segment 22 is preferably set to be smaller, thereby reducing the wear of the reamer segment 22, improving the finishing accuracy of the reamer segment 22, and improving the hole processing quality. In addition, parameters such as the end face angle of the first step portion P1 can also be adjusted as needed to adjust parameters such as the cutting angle of the reamer segment 22, so that the finishing process of the hole is stable and controllable.

[0053] The drill reamer is also provided with a chip groove 23 which extends spirally along the reamer segment 22 from the step end face where the first step portion P1 is connected to the reamer segment 22, so that the chips generated during the hole processing, especially the drilling process, are discharged out of the hole along the chip groove 23, thereby reducing chip sticking to the tool and improving the internal smoothness of the hole, so as to produce qualified products.

[0054] In some embodiments, the drill reamer further includes: a cooling pipeline, which is built into the drill reamer, and the cooling pipeline includes a plurality of injection ports (the injection ports can refer to Figure 4 24 in FIG. 1 ).

[0055] The cooling pipeline can be connected to the high-pressure water circuit of the processing machine. Multiple injection ports of the cooling pipeline are arranged at intervals at the front end of the first drill section 21 and / or the reamer section 22, so as to realize multi-point high-pressure water spraying through the injection ports. On the one hand, it effectively cools the processing part to avoid overheating affecting the processing, and on the other hand, it effectively washes the debris generated during the processing so that the debris is discharged out of the hole along the chip removal groove 23, thereby improving the cooling and chip removal effect, improving the product processing accuracy, and meeting the high-quality processing requirements.

[0056] In some embodiments, the extension direction of the injection port is not parallel to the axial direction Z of the drill reamer, and the injection port includes multiple types whose extension directions form different angles with the axial direction Z of the drill reamer.

[0057] The extension direction of the jet port is not parallel to the axial direction Z of the drill and reamer, which helps to push the chips generated by the processing in the opposite direction, so that the chips are discharged out of the hole along the chip removal groove 23; the jet port includes multiple types whose extension directions are at different angles to the axial direction Z of the drill and reamer, so as to realize multi-directional high-pressure water spraying through the jet port, effectively improve the cooling and chip removal effect, improve the product processing accuracy, and meet the high-quality processing requirements.

[0058] Figure 5 Another cutter head structure of the drill reamer in the embodiment of the utility model is shown; Figures 3 to 5 As shown, in some embodiments, the injection port includes a first type of injection port 24a arranged at the front end of the first drill bit section 21 and extending toward the front end of the drill reamer, and a second type of injection port 24b arranged at the front end of the reamer section 22 and extending toward the rear end of the drill reamer.

[0059] The first type of jet port 24a mainly plays the role of cooling the processed part, and the second type of jet port 24b mainly plays the role of promoting chip removal. By cooperating with the first type of jet port 24a and the second type of jet port 24b, the cooling and chip removal effect is effectively improved, the product processing accuracy is improved, and high-quality processing requirements are met.

[0060] In some embodiments, the second type of injection port 24b is disposed in the chip removal groove 23. There is a certain gap between the chip removal groove 23 and the hole wall being processed. The second type of injection port 24b is disposed in the chip removal groove 23 to facilitate flushing of the debris generated during the processing, so that the debris is discharged out of the hole along the chip removal groove 23.

[0061] In some embodiments, the reamer section 22 is formed as a double-edged blade including a reaming blade and a finishing blade. Thus, the reamer section 22 can simultaneously perform reaming and finishing, thereby improving production efficiency, simplifying process flow and tool management difficulty.

[0062] In some embodiments, the drill reamer further includes: a second drill segment 25, a diameter D3 of the second drill segment 25 is larger than a diameter D2 of the reamer segment 22, and the second drill segment 25 is connected to the reamer segment 22 via a second step portion P2.

[0063] The diameter of the port portion of the guide rod hole of the caliper bracket waiting to be processed is slightly larger than the diameter of the main portion of the hole. By forming a second drill section 25 at the rear end of the reamer section 22, the port portion of the formed hole can be processed simultaneously during the hole processing, without the need for tool change for secondary processing, thereby improving production efficiency, simplifying the process flow and reducing the difficulty of tool management.

[0064] In some embodiments, the chip flute 23 spirally extends along the reamer segment 22 and the second drill segment 25 to the rear end of the second drill segment 25 .

[0065] The chip removal groove 23 spirally extends to the rear end of the second drill section 25 , so that the debris generated during the hole machining process can be smoothly discharged out of the hole along the chip removal groove 23 .

[0066] Figure 2 The internal structure of the guide rod hole of the caliper bracket is shown. Figure 6 The structure of the drill reamer extending into the guide rod hole in the embodiment of the utility model is shown; Figures 1 to 6 As shown, in some embodiments, a drill reamer is used to process the guide rod hole 11 of the caliper bracket 10 ; wherein the size of the reamer segment 22 matches the size of the main body portion 11 b of the guide rod hole 11 .

[0067] The caliper bracket 10 is used to install and support the brake caliper, which is an active safety component of the vehicle and plays a role in ensuring the safety of the driver and passengers. The guide rod hole 11 of the caliper bracket 10 is processed by using the drill reamer that integrates a drill bit and a reamer, so that the guide rod hole 11 is processed and formed in one step, without changing the tool during the processing, thereby improving production efficiency and simplifying the process flow and tool management.

[0068] The depth of the reamer segment 22 along the axis direction Z is equal to the depth of the main part 11b of the guide rod hole 11 along the axis direction Z, and the diameter D2 of the reamer segment 22 is equal to the diameter D2' of the main part 11b of the guide rod hole 11, so that the main part 11b of the guide rod hole 11 is finely processed by the reamer segment 22. Figure 2 There is no special requirement for the size of the shaded area 11a in the figure, so the size of the first drill bit section 21 (including the diameter D1 of the first drill bit section 21, the depth of the first drill bit section, etc.) can be set as needed according to factors such as the design convenience of the drill reamer and the processing stability of the guide rod hole 11.

[0069] The above-mentioned drill reamer is used to process the guide rod hole 11 of the caliper bracket 10. The parameters of the first step portion P1 can be adjusted to improve the finishing accuracy of the reamer section 22 and the processing quality of the guide rod hole 11. The chip removal groove 23 can effectively discharge the debris generated during the processing of the guide rod hole 11 to improve the internal finish of the guide rod hole 11 and improve the processing quality of the guide rod hole 11.

[0070] In addition, the above-mentioned drill reamer is used to process the guide rod hole 11 of the caliper bracket 10, and the processing part can be cooled through the cooling pipeline, and the debris generated during the processing can be flushed to improve the processing accuracy of the guide rod hole 11 and meet the high-quality processing requirements of the caliper bracket 10.

[0071] In some embodiments, the drill reamer further comprises a second drill segment 25 connected to the reamer segment 22 and having a diameter D3 larger than the diameter D2 of the reamer segment 22 . The size of the second drill segment 25 matches the size of the end portion 11 c of the guide rod hole 11 .

[0072] The second drill bit section 25 can be used to simultaneously process the main portion 11b of the guide rod hole 11 and form the end portion 11c of the guide rod hole 11 without changing the tool for secondary processing, thereby improving production efficiency, simplifying the process flow and reducing the difficulty of tool management.

[0073] The depth of the second drill bit segment 25 is greater than or equal to the depth of the end portion 11c of the guide rod hole 11, and the diameter D3 of the second drill bit segment 25 is equal to the diameter D3' of the end portion 11c of the guide rod hole 11, so that the end portion 11c of the guide rod hole 11 is finely machined by the second drill bit segment 25.

[0074] The drill reamer of the utility model is also suitable for other suitable hole processing scenarios of automobile parts, and can process and form the required holes at one time, thereby improving production efficiency, enhancing processing accuracy, and ensuring the quality of processed products.

[0075] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A drill reamer, characterized in that: include: a first drill bit section and a reamer section, wherein the diameter of the reamer section is greater than the diameter of the first drill bit section, and the reamer section is connected to the first drill bit section via a first step portion; The chip removal groove starts from the step end surface where the first step portion is connected to the reamer segment and spirally extends along the reamer segment.

2. The drill reamer according to claim 1, characterized in that: Also includes: A cooling pipeline is built into the drill reamer, and the cooling pipeline includes a plurality of injection ports which are arranged at intervals at the front end of the first drill bit section and / or the front end of the reamer section.

3. The drill reamer according to claim 2, characterized in that: The extending direction of the injection port is not parallel to the axial direction of the drill reamer, and the injection port includes multiple types whose extending directions form different angles with the axial direction of the drill reamer.

4. The drill reamer according to claim 3, characterized in that: The injection ports include a first type of injection ports arranged at the front end of the first drill bit section and extending toward the front end of the drill reamer, and a second type of injection ports arranged at the front end of the reamer section and extending toward the rear end of the drill reamer.

5. The drill reamer according to claim 4, characterized in that: The second type injection port is disposed in the chip discharge groove.

6. The drill reamer according to claim 1, characterized in that: The reamer segment is formed as a double-edged blade including a reaming edge and a wiper edge.

7. The drill reamer according to claim 1, characterized in that: Also includes: A second drill bit section, wherein the diameter of the second drill bit section is greater than the diameter of the reamer section, and the second drill bit section is connected to the reamer section via a second step portion.

8. The drill reamer according to claim 7, characterized in that: The chip flute spirally extends along the reamer segment and the second drill segment to a rear end of the second drill segment.

9. The drill reamer according to any one of claims 1 to 8, characterized in that: The drill reamer is used to process the guide rod hole of the caliper bracket; Wherein, the size of the reamer segment matches the size of the main body of the guide rod hole.

10. The drill reamer according to claim 9, characterized in that The drill reamer further comprises a second drill bit section connected to the reamer section and having a diameter larger than that of the reamer section, wherein the size of the second drill bit section matches the size of the end portion of the guide rod hole.

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