Gear meshing type fine boring cutter

Abstract

The utility model discloses a gear meshing type fine boring cutter, and relates to the technical field of machining cutters. The fine boring cutter comprises a cutter shell, a driving assembly and a movable assembly. A mounting through hole is formed in the cutter shell; the driving assembly comprises a lead screw and a driving part matched with the lead screw, and the driving part is used for driving the lead screw to rotate; the lead screw is arranged in the mounting through hole; the movable assembly comprises a movable shaft; the movable shaft is inserted into the mounting through hole and is in threaded connection with the outer wall of the lead screw, and the lead screw is used for driving the movable shaft to linearly move in the extending direction of the mounting through hole; a plurality of limiting parts are arranged on the outer wall of the movable shaft, and the limiting parts are matched with the locking pieces to limit rotation of the movable shaft; a cutter is arranged at the end, away from the lead screw, of the movable shaft so that the movable shaft can drive the cutter to move. The fine boring cutter not only can complete high-precision adjustment under the driving of the lead screw and the driving part, but also considers the adjustment stability through the design of the limiting part and the corresponding locking piece.

Description

Technical Field

[0001] The present disclosure generally relates to the technical field of machining tools, and in particular to a gear meshing fine boring tool. Background Art

[0002] At present, there is a very large demand for boring tool products in the domestic market. Boring tools are irreplaceable products in mechanical hole processing solutions. As customers have higher and higher requirements for improving production efficiency and reducing costs, the precision boring tools in the society are uneven in high precision and stability. High-precision boring tool products are mainly reflected in precision control and stability. Precision boring tools that do not meet the requirements of stability and precision will increase the tool adjustment time for customers during use and easily cause the risk of parts exceeding tolerance, thereby reducing production efficiency. This greatly violates the purpose of customers to improve production efficiency. Therefore, we propose a gear meshing precision boring tool to solve the above problems. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a high-precision and high-stability gear meshing fine boring tool.

[0004] In a first aspect, the present application provides a gear meshing fine boring tool, comprising:

[0005] A knife housing, wherein a mounting through hole is provided on the knife housing;

[0006] A driving assembly, the driving assembly comprising: a lead screw and a driving part cooperating therewith, the driving part being used to drive the lead screw to rotate; the lead screw is arranged in the mounting through hole;

[0007] A movable assembly, the movable assembly comprising: a movable shaft; the movable shaft is inserted into the mounting through hole and is threadedly connected to the outer wall of the lead screw, the lead screw is used to drive the movable shaft to perform linear reciprocating movement along the extending direction of the mounting through hole;

[0008] The outer wall of the movable shaft is provided with a plurality of limiting parts, and the limiting parts cooperate with the locking member to limit the rotation of the movable shaft; a tool is provided at one end of the movable shaft away from the lead screw, so that when the movable shaft makes linear reciprocating movement, the tool is driven to move.

[0009] According to the technical solution provided in the embodiment of the present application, the driving unit includes:

[0010] A gear plate, wherein the gear plate is fixedly connected to the lead screw via a first connecting member;

[0011] A gear rod, one end of which is provided with a gear end, the gear end penetrates the knife housing and extends into the mounting through hole to be meshed with the gear plate.

[0012] According to the technical solution provided in the embodiment of the present application, the limiting portion is at least one limiting groove and / or at least one limiting section opened outside the movable shaft;

[0013] The extending direction of the limiting groove and the limiting section is consistent with the length direction of the movable shaft.

[0014] According to the technical solution provided in the embodiment of the present application, the locking member includes a first locking member and a second locking member for cooperating with the limiting groove and the limiting cut surface;

[0015] The first locking member and the second locking member may penetrate the knife housing and contact the limiting groove and the limiting cut surface respectively, so as to limit the rotation of the movable shaft.

[0016] According to the technical solution provided in the embodiment of the present application, the end of the lead screw away from the movable shaft has a disc portion, and the disc portion is located at the opening of the mounting through hole;

[0017] The outer circumference of the disc portion is provided with scales, and the knife housing is provided with marking lines matching the scales.

[0018] According to the technical solution provided in the embodiment of the present application, the driving component further includes:

[0019] a stopper, the stopper being sleeved on the first connecting member;

[0020] A gasket is arranged on a side of the stopper close to the disc portion, and is used to reduce the wear between the disc portion and the stopper when the lead screw rotates.

[0021] According to the technical solution provided in the embodiment of the present application, the fine boring tool further includes:

[0022] A tool clamp is connected to the end of the movable shaft away from the lead screw through a tool clamp locking screw; the tool is arranged on the tool clamp.

[0023] According to the technical solution provided in the embodiment of the present application, the tool is located at one end of the tool holder; the tool is triangular in shape, and its three end corners are all rounded, and the tool opens a hole through the end corners.

[0024] To sum up, the technical scheme specifically discloses a gear-engaging precision boring tool, a tool housing, a mounting through hole being provided on the tool housing; a driving assembly, the driving assembly comprising: a lead screw and a driving part cooperating therewith, the driving part being used to drive the lead screw to rotate; the lead screw is arranged in the mounting through hole; a movable assembly, the movable assembly comprising: a movable shaft; the movable shaft is inserted into the mounting through hole and is threadedly connected to the outer wall of the lead screw, the lead screw is used to drive the movable shaft to move linearly along the extension direction of the mounting through hole; a plurality of limit parts are provided on the outer wall of the movable shaft, the limit parts cooperate with the locking member to limit the rotation of the movable shaft; a tool is provided at the end of the movable shaft away from the lead screw, so that the movable shaft can drive the tool to move.

[0025] As customers have increasingly higher requirements for improving production efficiency and reducing costs, the precision boring tools available in the society now vary in terms of high precision and stability. The present application completes the driving of the movable shaft through the lead screw and the driving part in the driving assembly, and at the same time improves the stability of the movable shaft during the adjustment process through the cooperation of multiple limit parts opened on the outer wall of the movable shaft and the corresponding locking parts. The precision boring tool can not only complete high-precision adjustment driven by the lead screw and the driving part, but also take into account the stability of the adjustment through the design of the limit parts and the corresponding locking parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0027] Figure 1 The figure is a cross-sectional view of the overall structure of a gear meshing fine boring cutter.

[0028] Figure 2 It is an axial view of the overall structure of a gear meshing fine boring cutter.

[0029] Figure 3 This is a schematic diagram of the partial structure of a gear meshing fine boring cutter after the cutter housing is removed.

[0030] Figure 4 This is a right side structural cross-sectional view of a gear meshing fine boring cutter.

[0031] Numbers in the figure: 1, knife housing; 2, driving assembly; 201, screw; 202, gear plate; 203, first connecting member; 204, gear rod; 2041, cylindrical pin; 205, disc; 206, stopper; 207, gasket; 3, movable assembly; 301, movable shaft; 302, limiting groove; 303, limiting section; 4, tool; 5, first locking member; 6, second locking member; 7, tool clamp; 701, locking screw; 8, third locking member; 9, locking shaft top screw 10, transmission nut. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] Example 1

[0035] Please refer to Figure 1 and Figure 2 The embodiment shown in the figure provides a gear meshing type fine boring tool provided by the overall structure of the cross-sectional view and the overall structure of the isometric view, the fine boring tool comprising:

[0036] A knife housing 1, wherein the knife housing 1 is provided with a mounting through hole;

[0037] A driving assembly 2, the driving assembly 2 comprising: a lead screw 201 and a driving part cooperating therewith, the driving part being used to drive the lead screw 201 to rotate; the lead screw 201 is arranged in the mounting through hole;

[0038] A movable component 3, the movable component 3 comprising: a movable shaft 301; the movable shaft 301 is inserted into the mounting through hole and is threadedly connected to the outer wall of the lead screw 201, and the lead screw 201 is used to drive the movable shaft 301 to perform linear reciprocating movement along the extension direction of the mounting through hole;

[0039] The outer wall of the movable shaft 301 is provided with a plurality of limit parts, which cooperate with the locking member to limit the rotation of the movable shaft 301; a tool 4 is provided at one end of the movable shaft 301 away from the screw 201, so that when the movable shaft 301 makes linear reciprocating movement, it drives the tool 4 to move.

[0040] In this embodiment, the tool housing 1 can also be understood as the tool body of the fine boring tool, which provides corresponding installation space for the driving component 2 and the movable component 3.

[0041] like Figure 1As shown, the driving assembly 2 includes a lead screw 201 and a driving part matched therewith. When the driving part drives the lead screw 201 to rotate, the movable shaft 301 in the movable assembly 3 threadedly connected to the lead screw 201 can be driven by the lead screw 201 to move linearly along the extension direction of the lead screw 201; in the actual connection process, a transmission nut 10 is also arranged between the lead screw 201 and the movable shaft 301, and the transmission nut 10 is fixedly connected to the movable shaft 301 and threadedly connected to the lead screw 201. A tool 4 is arranged at one end of the movable shaft 301 away from the lead screw 201, and the movement of the movable shaft 301 can drive the tool 4 to move. Therefore, when machining holes, the contact points between the tool 4 and the parts to be drilled will be different to meet the corresponding machining requirements.

[0042] Specifically, Figure 1 and Figure 3 As shown, the driving unit includes:

[0043] A gear plate 202, wherein the gear plate 202 is fixedly connected to the lead screw 201 via a first connecting member 203;

[0044] The gear rod 204 has a gear end at one end, and the gear end penetrates the knife housing 1 and extends into the mounting through hole to be meshed with the gear plate 202 .

[0045] When the gear rod 204 rotates, it can drive the gear plate 202 to rotate. When the gear plate 202 rotates, since the gear plate 202 and the screw 201 are fixedly connected through the first connecting member 203, the gear plate 202 can drive the screw 201 to rotate. Here, the first connecting member 203 can be a nut.

[0046] It is important to note that the drive unit uses a gear plate 202 and a gear rod 204 to make the tool 4 easier to adjust. When the gear rod 204 and the gear plate 202 drive the lead screw 201 to rotate, so that the movable shaft 301 reaches the required position (the required position is determined by the process design requirements), in order to ensure the stable rotation of the gear rod 204, the gear rod 204 can be fixed to the tool housing 1 with a cylindrical pin 2041 (for specific structure, see Figure 3 ). At the same time, the present application adopts ultra-precision threads. When adjusting the gear rod 204, the precise cooperation between the lead screw 201 and the first connecting member 203 enables the minimum adjustment accuracy of the entire fine boring tool to reach a diameter of 0.005 mm.

[0047] Further, see Figure 3 and Figure 4 As shown, the limiting portion is at least one limiting groove 302 and / or at least one limiting cut surface 303 opened outside the movable shaft 301;

[0048] The extending direction of the limiting groove 302 and the limiting cut surface 303 is consistent with the length direction of the movable shaft 301 .

[0049] In the present application, in order to improve the high precision and stability of the fine boring tool, the movable shaft 301 has a limiting groove 302 and two corresponding limiting cut surfaces 303 (the limiting cut surfaces 303 can be set as inclined surfaces with a certain angle) on the outside. The limiting groove 302 and the limiting cut surfaces 303 are set to limit the movable shaft 301 to only move linearly when the lead screw 201 rotates, and will not rotate therewith. At the same time, the limiting groove 302 and the limiting cut surfaces 303 also increase the contact area between the locking member and the movable shaft 301, so that the movable shaft 301 will be more stable when moving.

[0050] Specifically, the locking member includes a first locking member 5 and a second locking member 6 for cooperating with the limiting groove 302 and the limiting cut surface 303;

[0051] The first locking member 5 and the second locking member 6 can pass through the knife housing 1 and contact the limiting groove 302 and the limiting cut surface 303 respectively, so as to limit the rotation of the movable shaft 301. At the same time, the first locking member 5 and the second locking member 6 will not be stuck with the limiting groove 302 and the limiting cut surface 303, which will make the movable shaft 301 unable to move.

[0052] like Figure 4 As shown, in addition to the first locking member 5 and the second locking member 6, the present application also includes a third locking member 8. The types of the first locking member 5, the second locking member 6 and the third locking member 8 can be selected from locking shafts. In order to ensure the stability of the connection, the locking shaft can be pressed, and the third locking member 8 will correspondingly abut against the corresponding limiting section 303.

[0053] In summary, based on the connection relationship of the above-mentioned parts, it can be known that the present application has the following transmission relationship.

[0054] By rotating the gear rod 204, the gear plate 202 can be driven to rotate. Since the gear plate 202 is fixedly connected to the screw 201 through the first connecting member 203, the screw 201 will also rotate under the drive of the gear plate 202. Then the transmission nut 10 threadedly connected thereto will also drive the movable shaft 301 to move. With the cooperation of the limiting part and the locking part, the movable shaft 301 will only make reciprocating linear movements along the extension direction of the screw 201. Then the tool 4 set at one end of the movable shaft 301 can move with the movement of the movable shaft 301.

[0055] In a preferred embodiment, if Figure 3As shown, the end of the lead screw 201 away from the movable shaft 301 has a disc portion 205, and the disc portion 205 is clamped at the opening of the mounting through hole;

[0056] The outer circumference of the disc portion 205 is provided with a scale, and the tool housing 1 is provided with a marking line matching the scale. When the screw 201 rotates, the adjustment accuracy at this time can be known through the scale outside the disc portion 205 (observe the scale indication currently aligned with the marking line), which is convenient for technical personnel to observe and adjust. The rotation angle of the screw 201 and the position adjustment of the tool 4 are achieved by the technical personnel in the early stage by setting the corresponding thread pitch parameters, which will not be elaborated here.

[0057] In a preferred embodiment, if Figure 1 As shown, the driving assembly 2 also includes:

[0058] A stopper 206, wherein the stopper 206 is sleeved on the first connecting member 203;

[0059] The first connecting member 203 may be correspondingly provided with a groove for cooperating with the stopper 206 .

[0060] The gasket 207 is disposed on a side of the stopper 206 close to the disc portion 205 ; the gasket 207 is located between the stopper 206 and the disc portion 205 , and is used to reduce the wear between the disc portion 205 and the stopper 206 when the lead screw 201 rotates.

[0061] In a preferred embodiment, if Figure 3 As shown, the fine boring tool also includes:

[0062] The tool clamp 7 is connected to the end of the movable shaft 301 away from the screw 201 through a tool clamp locking screw 701; the tool clamp 7 is provided with the tool 4, and the tool 4 is connected to the movable shaft 301 through the tool clamp 7, which can make the tool 4 more convenient in later maintenance and replacement.

[0063] Specifically, the tool 4 is located at one end of the tool holder 7; the tool 4 is triangular in shape, and its three end corners are all rounded. The tool 4 makes a hole through the end corners, so when the movable shaft 301 moves, the contact point between the tool 4 and the part to be punched will also be different, and the corresponding punching diameter will also change.

[0064] In summary, combined with the above-mentioned specific description of the transmission relationship, the specific working principle of this application is as follows:

[0065] The technician can drive the movable shaft 301 to move by rotating the gear rod 204 through the transmission relationship of gear rod 204 → gear plate 202 → first connecting piece 203 → lead screw 201 → transmission nut 10 → movable shaft 301. Since a limiting portion is provided on the outside of the movable shaft 301, under the cooperation of the limiting portion and the locking member, the movable shaft 301 will only make reciprocating linear movements along the extension direction of the lead screw 201, and the tool 4 provided at one end of the movable shaft 301 can move with the reciprocating movement of the movable shaft 301. Since the tool 4 is triangular in shape, one end corner of the tool 4 can have different contact points with the part to be punched when processing the part to be punched, driven by the movable shaft 301, and different contact points will also form holes of different diameters to meet different process requirements.

[0066] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A gear meshing fine boring tool, characterized in that: The fine boring tool comprises: A knife housing (1), wherein the knife housing (1) is provided with a mounting through hole; A drive assembly (2), the drive assembly (2) comprising: a lead screw (201) and a drive unit cooperating therewith, the drive unit being used to drive the lead screw (201) to rotate; the lead screw (201) being arranged in the mounting through hole; A movable component (3), the movable component (3) comprising: a movable shaft (301); the movable shaft (301) is inserted into the mounting through hole and is threadedly connected to the outer wall of the lead screw (201); the lead screw (201) can drive the movable shaft (301) to perform linear reciprocating movement along the extension direction of the mounting through hole; The outer wall of the movable shaft (301) is provided with a plurality of limiting portions, and the limiting portions cooperate with a locking member to limit the rotation of the movable shaft (301); a tool (4) is provided at one end of the movable shaft (301) away from the lead screw (201), so that when the movable shaft (301) performs linear reciprocating movement, the tool (4) is driven to move.

2. The gear meshing fine boring tool according to claim 1, characterized in that: The driving unit comprises: A gear plate (202), the gear plate (202) being fixedly connected to the lead screw (201) via a first connecting member (203); A gear rod (204), wherein one end of the gear rod (204) is provided with a gear end, and the gear end penetrates the knife housing (1) and extends into the mounting through hole to be meshed with the gear plate (202).

3. The gear meshing fine boring tool according to claim 1, characterized in that: The limiting portion is at least one limiting groove (302) and / or at least one limiting cut surface (303) formed outside the movable shaft (301); The extending direction of the limiting groove (302) and the limiting cut surface (303) is consistent with the length direction of the movable shaft (301).

4. The gear meshing fine boring tool according to claim 3, characterized in that: The locking member comprises a first locking member (5) and a second locking member (6) for cooperating with the limiting groove (302) and the limiting cut surface (303); The first locking member (5) and the second locking member (6) can penetrate the knife housing (1) and respectively contact the limiting groove (302) and the limiting cut surface (303) to limit the rotation of the movable shaft (301).

5. The gear meshing fine boring tool according to claim 2, characterized in that: One end of the lead screw (201) away from the movable shaft (301) has a disc portion (205), and the disc portion (205) is located at the opening of the mounting through hole; The outer circumference of the disc portion (205) is provided with scales, and the knife housing (1) is provided with marking lines matching the scales.

6. The gear meshing fine boring tool according to claim 5, characterized in that: The driving component (2) further comprises: a stopper (206), the stopper (206) being sleeved on the first connecting member (203); A gasket (207) is arranged on a side of the stopper (206) close to the disc portion (205) and is used to reduce wear between the disc portion (205) and the stopper (206) when the lead screw (201) rotates.

7. The gear meshing fine boring tool according to claim 1, characterized in that: The fine boring tool also includes: A tool clamp (7), the tool clamp (7) being connected to an end of the movable shaft (301) away from the lead screw (201) via a tool clamp locking screw (701); the tool clamp (7) is provided with the tool (4).

8. The gear meshing fine boring tool according to claim 7, characterized in that: The tool (4) is located at one end of the tool holder (7); the tool (4) is triangular in shape, and its three end corners are all rounded, and the tool (4) opens a hole through the end corners.

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