CN210632958U - Large-aperture inner hole fine boring device - Google Patents
Large-aperture inner hole fine boring device Download PDFInfo
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- CN210632958U CN210632958U CN201921362427.0U CN201921362427U CN210632958U CN 210632958 U CN210632958 U CN 210632958U CN 201921362427 U CN201921362427 U CN 201921362427U CN 210632958 U CN210632958 U CN 210632958U
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- inner hole
- cutter
- cutter body
- fine boring
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Abstract
The utility model relates to a large-bore inner hole fine boring device for finely boring a large-bore inner hole in a cylinder inner hole, which comprises a circular tubular cutter body, a guide key groove is processed on the excircle of the cutter body, a weight-reducing groove is dug on the excircle of the cutter body, a weight-reducing platform is cut, a fine boring cutter square hole for installing a fine boring cutter square is arranged along the radial direction of the circular tubular cutter body, a water outlet hole penetrating through the inner hole of the cutter body is arranged beside the square hole of the boring cutter, a positioning spigot and a thread connected with the cutter rod are arranged in the inner hole of the cutter body, the head part of an inner hole of the circular tubular cutter body is provided with a plug, the fine boring cutter body is connected with the boring cutter rod through an inner hole spigot and a thread, the fine boring cutter is arranged in the cutter square of the fine boring cutter body, the sizes of two tool tips of the fine boring tool are adjusted according to the aperture, the fine boring tool floats in the tool square, the main shaft rotates, and the tool bar drives the fine boring tool body to do linear motion, so that the inner hole fine boring is realized.
Description
Technical Field
The utility model belongs to the technical field of the machine-building, a carry out large bore hole finish boring device of finish boring to the big bore hole in the cylinder hole is related to.
Background
At present, the finish machining of the inner hole of the cylinder barrel in China mostly leaves allowance after roughly and finely boring the inner hole, and then inner hole honing or rolling is carried out. In order to improve the production efficiency and ensure the requirements of final size and shape and position of the inner hole, the roundness and the straightness of the finely bored inner hole before honing are required to be higher. In order to save the manufacturing cost, the inner hole fine boring device is designed, produced and manufactured by itself, and has the advantages of low cost, high efficiency and simple and convenient manufacture.
Disclosure of Invention
The utility model aims to overcome the not enough of existence among the prior art and provide one kind and practice thrift manufacturing cost promptly, it is simple convenient again, can reach better result of use's large aperture hole fine boring device.
The technical scheme of the utility model is realized like this: the large-aperture inner hole fine boring device comprises a circular-tube-shaped cutter body, wherein a guide key groove is processed on the outer circle of the cutter body, a lightening groove is further dug on the outer circle of the cutter body, a lightening platform is cut off, a fine boring cutter square hole for mounting a fine boring cutter square is radially formed in the circular-tube-shaped cutter body, a water outlet hole penetrating through an inner hole of the cutter body is formed beside the boring cutter square hole, a positioning spigot and a thread which are connected with a cutter rod are formed in the inner hole of the cutter body, and a plug is mounted at the head of the inner hole of the circular-tube-shaped cutter body.
The threads are multi-start square thread.
The circular tubular cutter body is formed by processing round steel or a steel plate and a seamless steel tube.
The positioning spigot is a double positioning spigot.
The welding mode of the inner hole of the cutter body and the plug is a U-shaped welding groove.
The thickness of the plug exceeds the precision boring cutter square by 5-10 mm so as to prevent scrap iron from being extruded into the cutter body square.
4 ~ 6 direction keyways are processed on the excircle of cutter body, install the wood guide key in the direction keyway.
The upper water outlet and the lower water outlet are arranged beside the square hole of the boring cutter.
The technical scheme of the utility model the positive effect that produces as follows: the fine boring device body can be made of seamless steel tubes, the plugs are made of round steel or steel plates, appropriate raw materials can be found easily, welding is adopted, manufacturing is convenient and fast, and raw materials are saved. The utility model discloses simple structure, the preparation is convenient, and manufacturing cost is less.
Drawings
Fig. 1 is a front view (taking phi 420 inner hole as an example) of the inner hole fine boring device of the invention.
Fig. 2 is a side view of the inner hole fine boring device (taking phi 420 inner hole as an example).
Fig. 3 is a schematic structural diagram of the inner hole fine boring device of the present invention.
Fig. 4 is a structural dimension diagram in the inner hole fine boring device of the present invention.
Fig. 5 is a dimension diagram of the thread structure provided in the inner hole of the cutter body of the fine boring device for the inner hole and connected with the cutter bar.
Fig. 6 is a blank of the cutter body in the inner hole fine boring device of the utility model.
Fig. 7 is a schematic structural view of the welded plug of the inner hole fine boring device of the present invention.
Detailed Description
As shown in the figure, a large-aperture inner hole fine boring device comprises a circular-tube-shaped cutter body 2, a guide key groove 3 is processed on the outer circle of the cutter body 2, a lightening groove 4 is further dug on the outer circle of the cutter body 2, a lightening platform 5 is cut off, a fine boring cutter square hole 6 for mounting a fine boring cutter square is radially arranged along the circular-tube-shaped cutter body 2, a water outlet hole 7 penetrating through the inner hole of the cutter body is formed beside the boring cutter square hole 6, a positioning spigot 8 and a thread 9 connected with a cutter bar are arranged in the inner hole of the cutter body, and a plug 1 is arranged at the head part of the inner hole of the circular-tube-shaped cutter body 2.
The thread 9 is a multi-start square thread.
The circular tubular cutter body 2 is formed by processing round steel or a steel plate and a seamless steel tube.
The positioning spigot 8 is a double positioning spigot.
The welding mode of the inner hole of the cutter body 2 and the plug is a U-shaped welding groove.
The thickness of the plug exceeds the precision boring cutter square by 5-10 mm so as to prevent scrap iron from being extruded into the cutter body square.
The excircle of cutter body 2 is processed and is had 4 ~ 6 direction keyway 3, installs the wood guide key in direction keyway 3.
And the two water outlet holes 7 are arranged beside the boring cutter square hole 6.
The device comprises a body and a plug. Selecting proper round steel and a seamless steel pipe, reserving machining allowance for the body and the plug, carrying out thermal refining on the body and the plug, and then carrying out semi-finishing: and processing a positioning spigot and a welding groove, and assembling and welding the positioning spigot and the welding groove into a whole. Two water outlets are designed near the cutter, the diameter of each water outlet is phi 18, so that smooth water outlet is facilitated, and the cooling speed of the cutter head is increased. Designing the dimension of the distance between the cutter and the end face: if 35mm, firstly increase body intensity, secondly increase the direction length that wooden guide key surpassed the tool bit position, because shake the sword easily during the entry, the direction length can play fine supporting role. The plug and the body are machined firstly, and then the outer circle, the weight reduction groove, the guide key groove, the connecting part spigot, the thread, the cutter square and the water outlet hole of the device are machined in a finish machining mode after the plug and the body are assembled and welded, the device is connected with the cutter bar, and the wood guide key and the finish boring cutter are installed to achieve inner hole finish boring machining.
Claims (8)
1. The utility model provides a large aperture hole fine boring device, includes circular tube shape cutter body (2), its characterized in that: the outer circle of the cutter body (2) is provided with a guide key groove (3), the outer circle of the cutter body (2) is further dug to form a weight reduction groove (4), a weight reduction platform (5) is cut to form the weight reduction platform, a fine boring cutter square hole (6) for installing a fine boring cutter square is radially formed in the circular tubular cutter body (2), a water outlet hole (7) penetrating through an inner hole of the cutter body is formed beside the boring cutter square hole (6), a positioning spigot (8) and a thread (9) connected with the cutter rod are formed in the inner hole of the cutter body, and the head of the inner hole of the circular tubular cutter body (2) is provided with a plug (1).
2. The large-aperture inner hole fine boring device as claimed in claim 1, wherein: the thread (9) is a multi-head square thread.
3. The large-aperture inner hole fine boring device as claimed in claim 1, wherein: the circular tubular cutter body (2) is formed by processing round steel or a steel plate and a seamless steel pipe.
4. The large-aperture inner hole fine boring device as claimed in claim 1, wherein: the positioning spigot (8) is a double positioning spigot.
5. The large-aperture inner hole fine boring device as claimed in claim 1, wherein: the welding mode of the inner hole of the cutter body (2) and the plug is a U-shaped welding groove.
6. The large-aperture inner hole fine boring device as claimed in claim 1, wherein: the thickness of the plug exceeds the precision boring cutter square by 5-10 mm so as to prevent scrap iron from being extruded into the cutter body square.
7. The large-aperture inner hole fine boring device as claimed in claim 1, wherein: 4-6 guide key grooves (3) are machined in the outer circle of the cutter body (2), and wood guide keys are installed in the guide key grooves (3).
8. The large-aperture inner hole fine boring device as claimed in claim 1, wherein: the upper water outlet hole and the lower water outlet hole (7) are arranged beside the boring cutter square hole (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921362427.0U CN210632958U (en) | 2019-08-21 | 2019-08-21 | Large-aperture inner hole fine boring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921362427.0U CN210632958U (en) | 2019-08-21 | 2019-08-21 | Large-aperture inner hole fine boring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210632958U true CN210632958U (en) | 2020-05-29 |
Family
ID=70801015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921362427.0U Active CN210632958U (en) | 2019-08-21 | 2019-08-21 | Large-aperture inner hole fine boring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210632958U (en) |
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2019
- 2019-08-21 CN CN201921362427.0U patent/CN210632958U/en active Active
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