Depth-adjustable precise outer circle fine boring cutter

Abstract

The utility model discloses a depth-adjustable precise outer circle fine boring cutter, and belongs to the field of machining cutters. Comprising a cutter handle and a notch formed in the end of the cutter handle in the radial direction, a cutter bar is slidably connected into the notch in the radial direction of the cutter handle, and a cutter head facing the central axis of the cutter handle is detachably connected to the cutter bar; the two ends of the notch are detachably connected with check blocks respectively, a screw arranged in the sliding direction of the cutter bar is rotationally connected between the two check blocks, the two ends of the screw penetrate through the check blocks respectively, and a threaded hole in threaded connection with the screw is formed in the cutter bar. A concentric-square-shaped hole communicated with the notch is formed in the cutter handle in the radial direction of the cutter handle, and a positioning bolt capable of being in threaded connection with the cutter bar is arranged in the concentric-square-shaped hole in a sliding and penetrating mode. According to the depth-adjustable precise outer circle fine boring cutter, the radial position of the cutter bar on the cutter handle can be adjusted by rotating the screw rod, and then the boring depth of the cutter head can be rapidly and accurately adjusted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of machining tool, especially involve a depth adjustable type precision external circle fine boring tool. BACKGROUND

[0002] In machining, external circle fine boring is the key process to ensure the external circle size precision and surface quality of workpiece. However, the existing external circle boring tool often needs to replace different types of tools or make complicated adjustment to the original tool when machining external circle with different depth requirements. The operation is complicated, and it is difficult to ensure the precision and stability of the boring tool during depth adjustment, which may lead to the deviation of the machined external circle size and the surface roughness that cannot meet the specified requirements, increasing the production cost and machining time.

[0003] Therefore, there is an urgent need for a depth adjustable type precision external circle fine boring tool that is easy to operate and can accurately adjust the boring depth. SUMMARY

[0004] The utility model aims at overcoming the defects in the prior art, providing a depth adjustable type precision external circle fine boring tool that can adjust the radial position of the tool bar on the tool handle by rotating the screw rod, thereby quickly and accurately adjusting the boring depth of the tool head.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of a depth adjustable type precision external circle fine boring tool, which comprises a tool handle and a slot opening in the end of the tool handle along its radial direction, a tool bar slidingly connected in the slot along the radial direction of the tool handle, and a tool head detachably connected to the tool bar and arranged towards the central axis of the tool handle.

[0006] Two end blocks are detachably connected to the two ends of the slot, and a screw rod is rotatably connected between the two end blocks along the sliding direction of the tool bar. The two ends of the screw rod penetrate the end blocks, and the tool bar is provided with a threaded hole threadedly connected with the screw rod.

[0007] The tool handle is provided with a meandering hole along its radial direction, and a positioning bolt threadedly connected with the tool bar is slidingly arranged in the meandering hole.

[0008] Optionally, the number of tool bars is two, and the two tool bars are threadedly connected with the screw rod through the threaded hole. The threaded direction of the threaded hole on the two tool bars is opposite, and the two tool bars are arranged in a circular array along the central axis of the tool handle.

[0009] Optionally, a multi-sided groove is formed in the two ends of the screw rod penetrating the end blocks along the axial direction.

[0010] Optionally, the two sides of the section of the knife rod slidingly connected in the slot are respectively provided with a protruding rib part, and the protruding rib part is slidingly connected to the side wall of the slot along the radial direction of the knife handle.

[0011] Optionally, the stop block is movably embedded at both ends of the slot, and a plurality of fixing bolts capable of being threadedly connected with the stop block are provided on the knife handle.

[0012] Optionally, the section of the knife rod slidingly connected in the slot is capable of abutting against the side wall of the slot.

[0013] Optionally, the top of the knife handle is provided with a scale line linearly arranged along the sliding direction of the knife rod, and the knife rod is provided with an indication arrow capable of corresponding to the scale line.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] (1), the depth adjustable precision external circle fine boring cutter in the technical scheme, main structure is all concentrated on the knife handle, and is adjusted the radial position of the knife rod on the knife handle through the cooperation of the slot, the stop block, the screw rod, the positioning bolt and other components, reaches the boring depth of the cutter bit adjustment function. The knife rod which is completed position adjustment can be fastened again through the positioning bolt, prevents the accidental movement of the knife rod due to boring force and other factors, strengthens the stability of the overall structure of the cutter in the working state. The whole cutter structure is stable, convenient and fast to adjust and has high precision, can satisfy various processing requirements;

[0016] (2), the number of the knife rods is two, the two knife rods are respectively provided with cutter bits, and the two knife rods can be synchronously moved towards or away from each other under the driving of the screw rod, and can simultaneously act on the surface of the workpiece to be processed, thereby effectively balancing the boring force, improving the processing precision and the surface quality of the workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model is further described below in combination with the drawings and embodiments.

[0018] Figure 1 is the structure schematic view of the depth adjustable precision external circle fine boring cutter in the preferred embodiment of the utility model;

[0019] Figure 2 is the side view structure schematic view of the depth adjustable precision external circle fine boring cutter in the preferred embodiment of the utility model;

[0020] Figure 3 is the depth adjustable precision external circle fine boring cutter in the preferred embodiment of the utility model Figure 2 is the sectional view structure schematic view at A-A;

[0021] Figure 4It is the structure schematic view of the knife rod and the knife head in the preferred embodiment of the utility model;

[0022] Among them, 1, knife handle;101, notch;102, meander hole;103, scale line;2, knife rod;201, convex rib part;202, indication arrow;3, fixed bolt;4, knife head;5, stop block;6, screw;7, positioning bolt. DETAILED DESCRIPTION

[0023] The utility model will be explained further in detail by combining with the drawings and embodiments, these drawings are all simplified schematic view, only with the schematic way the basic structure of the utility model is explained, therefore it only shows the related structure of the utility model.

[0024] Need to explain, if the embodiment has involved directionality indication (such as upper, lower, bottom, top etc.), then the directionality indication is only used to explain the relative position relationship, movement condition etc. between the components in a certain specific posture, if the specific posture changes, then the directionality indication also changes accordingly. The term "first", "second" is only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly include one or more features. Unless otherwise specified and limited, the terms "set", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0025] As Figures 1-4 As shown in a kind of depth adjustable precision external circle fine boring cutter, including knife handle 1 and the notch 101 being set in the end of knife handle 1 along its radial direction, knife handle 1 can be installed on the mechanical processing equipment in prior art, and the mechanical processing equipment can drive knife handle 1 to rotate at high speed along its axis. At the same time, the notch 101 is slidably connected with the knife rod 2 along the radial direction of the knife handle 1, and the knife head 4 is detachably connected to the knife rod 2 and arranged towards the axis of the knife handle 1, and the knife head 4 can be detachably connected to the knife rod 2 by bolt or other fastener. In the technical solution, by setting the notch 101 in the end of the knife handle 1 along the radial direction, and making the knife rod 2 slide along the radial direction in the notch 101, the radial position of the knife head 4 is adjusted, and the structure can meet the needs of different workpiece external circle machining. At the same time, since the knife head 4 can be replaced, the versatility of the cutter can be further increased.

[0026] To adjust the radial position of the tool head 4 on the tool handle 1, the two ends of the slot 101 are respectively detachably connected with the stop blocks 5, the screw rod 6 is rotatably connected between the two stop blocks 5 along the sliding direction of the tool rod 2, the two ends of the screw rod 6 respectively penetrate the stop blocks 5, and the tool rod 2 is provided with the threaded hole which is threadedly connected with the screw rod 6. That is, the screw rod 6 can be screwed into the threaded hole and be threadedly connected with the tool rod 2, the tool rod 2 can only slide along the radial direction of the tool handle 1 in the slot 101, when the screw rod 6 is rotated, the tool rod 2 can slide along the radial direction of the tool handle 1, and the radial position of the tool head 4 on the tool handle 1 can be accurately adjusted. Meanwhile, the stop blocks 5 can be movably embedded in the two ends of the slot 101, and the tool handle 1 is provided with a plurality of fixing bolts 3 which can be threadedly connected with the stop blocks 5, by tightening or loosening the fixing bolts 3 on the tool handle 1, the stop blocks 5 can be detached.

[0027] Further, in order to ensure the position stability of the tool rod 2 relative to the tool handle 1, the tool handle 1 is provided with the back-shaped hole 102 which is communicated with the slot 101 along the radial direction of the tool handle 1, the positioning bolt 7 which can be threadedly connected with the tool rod 2 is slidably penetrated in the back-shaped hole 102, and the bolt head part of the positioning bolt 7 can abut against the tool handle 1, when the positioning bolt 7 is tightened, the position of the tool rod 2 can be further fixed. In order to prevent the tool rod 2 from moving accidentally due to boring force and other factors during the machining process, the stability of the overall structure of the tool in the working state is enhanced.

[0028] Specifically, the depth-adjustable precision external circle precision boring tool mainly concentrates the main structures on the tool handle 1, and adjusts the radial position of the tool rod 2 on the tool handle 1 to adjust the boring depth of the tool head 4 through the cooperation of the slot 101, the stop block 5, the screw rod 6 and the positioning bolt 7, the structure is stable, the adjustment is convenient, fast and high-precision, and can meet various machining requirements.

[0029] Further, in order to increase the machining quality of the tool, as shown in Figure 1 , Figure 3 , the number of the tool rods 2 is two, the two tool rods 2 are threadedly connected with the screw rod 6 through the threaded holes, the threaded directions of the threaded holes on the two tool rods 2 are opposite, and the two tool rods 2 are arranged in a circular array along the central axis of the tool handle 1. That is, by rotating the screw rod 6, the two tool rods 2 can be synchronously moved towards or away from each other. The distance between the tool head 4 on the two tool rods 2 and the rotation center axis of the tool handle 1 is equal, and the two tool rods 2 can simultaneously act on the surface of the workpiece to be machined, thereby effectively balancing the boring force and improving the machining precision and the surface quality of the workpiece.

[0030] To facilitate the rotation of the screw rod 6, as shown in Figure 1As shown, the screw rod 6 is provided with a polygonal recess at both ends thereof along the axial direction of the block 5, and the polygonal recess is adapted to a hexagonal wrench or other manual hardware tool in the prior art. The operator can quickly adjust the radial position of the tool bit 4 by using the manual hardware tool, so as to improve the work efficiency. Meanwhile, in order to facilitate the observation of the radial position of the tool bit 4, the top of the tool holder 1 is provided with scale lines 103 arranged linearly along the sliding direction of the tool bar 2, and the tool bar 2 is provided with an indicating arrow 202 corresponding to the scale lines 103.

[0031] Further, in order to increase the accuracy of the radial sliding of the tool bar 2, as shown, Figure 4 The tool bar 2 is slidably connected to a section of the slot 101, and the two sides of the section are respectively provided with a protruding rib part 201, and the protruding rib part 201 is slidably connected to the side wall of the slot 101 along the radial direction of the tool holder 1, and the section of the tool bar 2 slidably connected to the slot 101 can abut against the side wall of the slot 101.

[0032] Working principle: the tool holder 1 can be installed on a machining equipment in the prior art, the machining equipment can drive the tool holder 1 to rotate at a high speed along the axial direction thereof, and a workpiece to be machined can be clamped and positioned on the machining equipment, and the machining center axis of the workpiece coincides with the rotation center axis of the tool holder 1. The operator rotates the screw rod 6 by using a tool, so that the tool bar 2 slides along the radial direction of the tool holder 1, and the boring depth of the tool bit 4 is adjusted. Meanwhile, after confirming the boring depth of the tool bit 4, the position of the tool bar 2 on the tool holder 1 can be further fixed by tightening the positioning bolt 7, so as to prevent the accidental movement of the tool bar 2 due to boring force or other factors during the machining process, and the stability of the overall structure of the tool in the working state is enhanced.

[0033] According to the ideal embodiments of the present application, the above description can be changed and modified in various ways without departing from the technical concept of the present application. The technical scope of the present application is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A depth-adjustable precision external cylindrical boring tool, characterized in that: It includes a handle (1) and a slot (101) opened radially at the end of the handle (1). A shank (2) is slidably connected in the slot (101) along the radial direction of the handle (1). A blade head (4) is detachably connected to the shank (2) and is arranged toward the central axis of the handle (1). The slot (101) is detachably connected to two stops (5), and a screw (6) is rotatably connected between the two stops (5) along the sliding direction of the tool bar (2). The two ends of the screw (6) pass through the stops (5), and the tool bar (2) is provided with a threaded hole that is threadedly connected to the screw (6). The tool holder (1) is provided with a spiral hole (102) communicating with the slot (101) along its radial direction, and a positioning bolt (7) that can be threadedly connected to the tool bar (2) is slidably inserted in the spiral hole (102).

2. The depth-adjustable precision external cylindrical boring tool according to claim 1, characterized in that: There are two tool holders (2). Both tool holders (2) are threaded to the screw (6) through the threaded hole. The thread directions of the threaded holes on the two tool holders (2) are opposite. The two tool holders (2) are arranged in a circular array along the central axis of the tool holder (1).

3. The depth-adjustable precision external cylindrical boring tool according to claim 1, characterized in that: The screw (6) passes through both ends of the stop (5) and has polygonal grooves along its axial direction.

4. The depth-adjustable precision external cylindrical boring tool according to claim 1, characterized in that: The tool holder (2) is slidably connected to a section in the slot (101) with ribs (201) on both sides, and the ribs (201) are slidably connected to the side wall of the slot (101) along the radial direction of the tool holder (1).

5. The depth-adjustable precision external cylindrical boring tool according to claim 1, characterized in that: The stop block (5) can be movably embedded at both ends of the slot (101), and the handle (1) is provided with a number of fixing bolts (3) that can be threadedly connected to the stop block (5).

6. The depth-adjustable precision external cylindrical boring tool according to claim 1, characterized in that: The tool holder (2) is slidably connected to a section inside the slot (101) that can abut against the side wall of the slot (101).

7. The depth-adjustable precision external cylindrical boring tool according to claim 1, characterized in that: The top of the handle (1) is provided with scale lines (103) arranged linearly along the sliding direction of the bar (2), and the bar (2) is provided with an indicator arrow (202) that corresponds to the scale lines (103).

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