Stepped hole machining boring cutter

Abstract

The utility model relates to the technical field of machine tool cutters, in particular to a stepped hole machining boring cutter which comprises an upper shaft body, a lower shaft body is arranged below the bottom end of the outer wall of the upper shaft body, a cutter bit section is integrally fixed to the bottom end of the lower shaft body, and the upper shaft body and the lower shaft body are detachably connected. The upper shaft body and the lower shaft body are separated and can be fixed together through the cooperation of the center positioning insertion block, the first positioning insertion block and the second positioning insertion block in use due to the fact that the upper shaft body and the lower shaft body are separated and can be fixed together through the cooperation of the center positioning insertion block and the second positioning insertion block. And when the tool bit section is damaged, a worker can separate the upper shaft main body from the lower shaft main body to replace the lower shaft main body, so that the replacement of the upper shaft main body can be reduced, and the production cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to lathe tool technical field, concretely relates to a step hole processing boring tool. BACKGROUND

[0002] Boring tool as the important tool of hole processing, in industrial production is more common. When processing step hole, need a plurality of different diameter boring tool respectively cutting, that is, first processing small hole diameter, processing big hole diameter again. The efficiency of this single boring hole boring tool combination cutting method is low, the capacity is low, the cost is high, and cutting a step hole needs to spend a lot of time, thereby causing the assembly efficiency and output of whole workpiece are lower.

[0003] For this personnel also can adopt step boring tool to carry out drilling processing, its mode is setting step-shaped tool bit at the bottom of original boring tool, make boring tool can process step hole when rotating, but the boring tool above is integral type fixed, and because the weight and volume of bottom tool bit increase, if the hardness of workpiece is higher when initial drilling, or the tool bit is used for a long time, the tool bit is easy to break and damage, and the tool bit damage often leads to the whole boring tool scrap, thereby can cause certain resource waste, therefore, the existing step hole processing boring tool still has certain insufficient when using.

[0004] In summary, it is necessary to invent a step hole processing boring tool. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a step hole processing boring tool to solve the problem that the bottom tool bit is damaged, which often leads to the whole boring tool being scrapped due to the increase in weight and volume of the bottom tool bit during initial drilling, and the hardness of the workpiece is high or the tool bit is used for a long time.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme: a step hole processing boring tool, comprising an upper shaft body, a lower shaft body is arranged below the bottom end of the outer wall of the upper shaft body, a tool bit section is integrally fixed to the bottom end of the lower shaft body, the upper shaft body and the lower shaft body are connected by a detachable mode, and the upper shaft body and the lower shaft body are fixed through a connecting part.

[0007] Preferably, the outer wall top end of the upper shaft body is fixed with a connecting head for connection, the outer wall of one side of the lower shaft body close to the upper shaft body is integrally fixed with a meshing plug, the outer wall bottom end of the upper shaft body and the corresponding position of the meshing plug are provided with a meshing groove, and the meshing plug is connected with the meshing groove.

[0008] Preferably, the connecting component comprises a center positioning plug fixed at the center of the top end of the outer wall of the lower shaft body, the bottom end of the outer wall of the upper shaft body is provided with a positioning slot corresponding to the center positioning plug, and the outer wall of the center positioning plug is in sliding connection with the inner wall of the positioning slot.

[0009] Preferably, the outer wall of the upper shaft body is provided with an annular groove at the side end of the upper shaft body and at the upper end of the positioning slot, the inner wall of the annular groove is provided with mounting insertion holes in the front-rear direction and the left-right direction, and the two mounting insertion holes are located at the same horizontal position.

[0010] Preferably, the inner wall of the mounting insertion hole at the front-rear end is in sliding connection with a second positioning plug, and the inner wall of the mounting insertion hole at the left-right end is in sliding connection with a first positioning plug; the first positioning plug and the second positioning plug are staggered.

[0011] Preferably, the outer wall of the center positioning plug is provided with an avoiding insertion hole at the position corresponding to the first positioning plug and the second positioning plug, and the first positioning plug and the second positioning plug are in sliding connection with the inner wall of the avoiding insertion hole.

[0012] Preferably, the outer wall of the first positioning plug is provided with an avoiding slot at the position corresponding to the second positioning plug, the inner wall of the avoiding slot is fixed with a center block at the center of the bottom end, and the outer wall of the second positioning plug is in sliding connection with the center block through a strip-shaped slot provided at the bottom end.

[0013] Preferably, the outer wall of the upper shaft body is provided with a sealing ring at the position corresponding to the annular groove, the sealing ring is a two-section structure, the opposite sides of the two sealing rings are fixed with connecting blocks, and adjacent two second positioning plugs are fixedly connected through bolts.

[0014] The utility model discloses the beneficial effect is:

[0015] In the utility model, the upper shaft body and the lower shaft body are separated, and the upper shaft body and the lower shaft body can be fixed together through the center positioning plug, the first positioning plug and the second positioning plug during use, the lower shaft body can be replaced when the tool bit section is damaged, the replacement of the upper shaft body is reduced, and the production cost is reduced. ACCURACY OF DRAWINGS

[0016] Figure 1 It is the external structure schematic diagram of the front direction of the utility model;

[0017] Figure 2 It is the partial cross section structure schematic diagram of the front direction of the utility model;

[0018] Figure 3Part structure schematic diagram of lower shaft main body in the utility model from the bottom direction;

[0019] Figure 4 Schematic diagram of the three-dimensional structure of the upper shaft main body in the utility model;

[0020] Figure 5 Schematic diagram of the connection structure of the first positioning plug and the second positioning plug in the utility model.

[0021] In the figure: 100, upper shaft main body; 110, connecting head; 120, meshing groove; 130, annular groove; 131, mounting jack; 200, lower shaft main body; 210, tool bit section; 220, meshing plug; 230, central positioning plug; 300, sealing ring; 310, connecting block; 320, first positioning plug; 321, central block; 330, second positioning plug. DETAILED DESCRIPTION

[0022] The preferred embodiments of the utility model are described below in combination with the drawings, and it should be understood that the preferred embodiments described herein are only used for illustrating and explaining the utility model, and are not used for limiting the utility model.

[0023] Referring to the drawings Figures 1-5 The utility model provides a kind of stepped hole processing boring cutter, including upper shaft main body 100, the bottom end below the outer wall of upper shaft main body 100 is provided with lower shaft main body 200, the bottom end of lower shaft main body 200 is integrally fixed with tool bit section 210, and the tool bit section 210 is arranged to process stepped hole to workpiece, and upper shaft main body 100 and lower shaft main body 200 are connected by detachable mode, the outer wall top end of upper shaft main body 100 is fixed with the connecting head 110 for connection, and the connecting head 110 is arranged to connect and fix boring cutter with tool mounting seat of machine tool, and the outer wall of one side of lower shaft main body 200 close to upper shaft main body 100 is integrally fixed with meshing plug 220, and the outer wall bottom end of upper shaft main body 100 and the position corresponding with meshing plug 220 are provided with meshing groove 120, and meshing plug 220 is connected with meshing groove 120, and the meshing plug 220 and meshing groove 120 are arranged to position the installation of upper shaft main body 100 and lower shaft main body 200, increase the transverse strength of upper shaft main body 100 and lower shaft main body 200, avoid the rupture between upper shaft main body 100 and lower shaft main body 200 during drilling process;

[0024] The upper shaft body 100 and the lower shaft body 200 are fixed through a connecting component, the connecting component comprises a center positioning plug 230 fixed at the center of the top end of the outer wall of the lower shaft body 200, a positioning slot is arranged at the bottom end of the outer wall of the upper shaft body 100 and corresponds to the center positioning plug 230, the outer wall of the center positioning plug 230 is in sliding connection with the inner wall of the positioning slot, the center positioning plug 230 and the positioning slot are arranged to improve the connection strength of the upper shaft body 100 and the lower shaft body 200 and avoid the stability of the upper shaft body 100 and the lower shaft body 200 after being fixed, a ring-shaped groove 130 is arranged at the side end of the outer wall of the upper shaft body 100 and located at the upper end of the positioning slot, mounting insertion holes 131 are arranged in the front-rear direction and the left-right direction of the inner wall of the ring-shaped groove 130, the two mounting insertion holes 131 are located at the same horizontal position, the ring-shaped groove 130 is arranged to facilitate the insertion of the first positioning plug 320 and the second positioning plug 330 into the mounting insertion hole 131, the inner wall of the front-rear end mounting insertion hole 131 is in sliding connection with the second positioning plug 330, the inner wall of the left-right end mounting insertion hole 131 is in sliding connection with the first positioning plug 320, the first positioning plug 320 and the second positioning plug 330 are staggered, and the first positioning plug 320 and the second positioning plug 330 are arranged to be fixed and connected with the center positioning plug 230 and the positioning slot by being inserted into the upper shaft body 100, so that the upper shaft body 100 and the lower shaft body 200 can be fixed together.

[0025] The outer wall of the center positioning plug 230 is provided with an avoiding insertion hole at both sides and corresponding positions of the first positioning plug 320 and the second positioning plug 330, the first positioning plug 320 and the second positioning plug 330 are in sliding connection with the inner wall of the avoiding insertion hole, the avoiding insertion hole is arranged to enable the center positioning plug 230 to pass through the first positioning plug 320 and the second positioning plug 330, the outer wall of the first positioning plug 320 is provided with an avoiding slot at a position corresponding to the second positioning plug 330, the avoiding slot is arranged to enable the first positioning plug 320 and the second positioning plug 330 to be staggered together, a center block 321 is fixed at the bottom center of the inner wall of the avoiding slot, the outer wall of the second positioning plug 330 is in sliding connection with the center block 321 through a strip-shaped slot, the center block 321 and the strip-shaped slot are arranged to improve the stability of the connection between the first positioning plug 320 and the second positioning plug 330, the outer wall of the upper shaft body 100 is provided with a sealing ring 300 at a position corresponding to the ring-shaped groove 130, the sealing ring 300 has a two-section structure, the opposite sides of the two sealing rings 300 are fixed with a connecting block 310, adjacent two second positioning plugs 330 are fixedly connected through bolts, the sealing ring 300 is arranged to fix the positions of the installed first positioning plug 320 and the second positioning plug 330, and the sealing ring 300 can be fixed to the outer wall of the ring-shaped groove 130 through the connecting block 310 and the bolts.

[0026] The use process of the utility model is as follows: firstly, personnel can connect and fix the boring cutter through the connecting head 110 and the cutter mounting seat of the machine tool, then rotate the boring cutter through the machine tool, so that the cutter head section 210 can open the stepped hole to the fixed workpiece when rotating;

[0027] When the cutter head section 210 is damaged after long time use, personnel can first take down the boring cutter, then unscrew the bolt of the fixed connecting block 310, then take out the first positioning insert block 320 and the second positioning insert block 330 from the installation insert hole 131 through the hammer cooperating with the ejector pin, at this time personnel can separate the upper shaft body 100 and the lower shaft body 200, then take out the new lower shaft body 200, and insert the center positioning insert block 230 into the positioning insert slot, and make the meshing insert block 220 and the meshing groove 120 align, then personnel first insert the first positioning insert block 320 into the installation insert hole 131 through the rubber hammer, then take out the second positioning insert block 330, and insert the second positioning insert block 330 into the installation insert hole 131 through another installation insert hole 131, and make the second positioning insert block 330 and the first positioning insert block 320 connect, after completion personnel can take out the sealing ring 300 and clamp the sealing ring 300 on the outer wall of the annular groove 130, then fix the sealing ring 300 and the inner wall of the annular groove 130 through the connecting block 310 and the bolt, then personnel can continue to use the boring cutter installation.

[0028] The above is only the preferred embodiment of the utility model, any skilled person in the art can modify the utility model by using the above-mentioned technical solutions or modify it into equivalent technical solutions. Therefore, any simple modification or equivalent replacement according to the technical solutions of the utility model is within the scope of protection required by the utility model.

Claims

1. A stepped hole processing boring tool, comprising an upper shaft body (100), a lower shaft body (200) is arranged below the bottom end of the outer wall of the upper shaft body (100), and a tool head section (210) is integrally fixed to the bottom end of the lower shaft body (200), characterized in that: The upper shaft body (100) and the lower shaft body (200) are connected in a detachable manner, and the upper shaft body (100) and the lower shaft body (200) are fixed through a connecting component, the connecting component comprises a center positioning plug (230) fixed at the center of the top end of the outer wall of the lower shaft body (200), a positioning slot is formed at the bottom end of the outer wall of the upper shaft body (100) and the corresponding position of the center positioning plug (230), the outer wall of the center positioning plug (230) is slidably connected with the inner wall of the positioning slot, a ring-shaped groove (130) is formed at the side end of the outer wall of the upper shaft body (100) and the upper end of the positioning slot, mounting insertion holes (131) are formed in the front-to-back direction and the left-to-right direction of the inner wall of the ring-shaped groove (130), the two mounting insertion holes (131) are located at the same horizontal position, the inner wall of the mounting insertion hole (131) at the front end and the rear end is slidably connected with a second positioning plug (330), and the inner wall of the mounting insertion hole (131) at the left end and the right end is slidably connected with a first positioning plug (320), the first positioning plug (320) and the second positioning plug (330) are staggered and connected, and the outer wall of the center positioning plug (230) is slidably connected with the inner wall of the avoiding insertion hole at the corresponding position of the first positioning plug (320) and the second positioning plug (330).

2. The stepped hole machining boring tool according to claim 1, characterized in that: The outer wall of the upper shaft body (100) is fixed with a connecting head (110) at the top end, the outer wall of the lower shaft body (200) is integrally fixed with an engagement plug (220) near the side of the upper shaft body (100), and the outer wall of the upper shaft body (100) is provided with an engagement slot (120) at the bottom end and the corresponding position of the engagement plug (220).

3. The stepped hole boring tool according to claim 2, wherein: The outer wall of the first positioning plug (320) is provided with an avoiding slot at the corresponding position of the second positioning plug (330), and the inner wall of the avoiding slot is fixed with a center block (321) at the center of the bottom end.

4. The stepped hole boring tool according to claim 3, wherein: The outer wall of the upper shaft body (100) is provided with a sealing ring (300) at the corresponding position of the ring-shaped groove (130), the sealing ring (300) is a two-section structure, the opposite sides of the two sealing rings (300) are fixed with connecting blocks (310), and adjacent two second positioning plugs (330) are fixedly connected through bolts.

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