Reamer with length adjusting function

Abstract

The utility model discloses a reamer with a length adjusting function. The telescopic reamer comprises a reamer rod, a telescopic assembly arranged in the reamer rod and a locking assembly arranged on the surface of the front side of the telescopic assembly, the telescopic assembly comprises a bottom groove formed in the lower end of the reamer rod, and when the length of the reamer needs to be adjusted, a rotary knob is twisted to drive a first bevel gear connected with the rotary knob to rotate; a second bevel gear is driven to rotate through meshing of insections arranged on the outer wall, the second bevel gear rotates to drive a screw connected with the second bevel gear to rotate, a telescopic column stably slides up and down in a telescopic groove, and then the distance between a reamer head installed at the upper end and a reamer rod can be stably adjusted. The bolt is twisted to be meshed in the screw groove to move backwards, the clamping block rotationally connected with the rear side surface of the bolt is driven to move backwards, the clamping lines on the rear side surface of the clamping block are clamped and embedded in the clamping lines arranged on the surface of the telescopic column, therefore, the length adjustment of the cutter bar is effectively locked, and the stability after adjustment is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of reamers, in particular to a reamer with a length adjustment function. Background Art

[0002] During the machining process of workpiece holes, the three steps are generally roughing, semi-finishing, and then finishing. Currently, the tools used in the workpiece hole machining process are mostly alloy multi-edge reamers, single-edge gun reamers, etc. However, these machining tools are mostly long, integral tools. Once the tools are worn or broken, the replacement cost is relatively high, and the processing stability is insufficient. At the same time, when machining workpiece holes of different depth specifications, the corresponding length of tools must be replaced too frequently, affecting production efficiency.

[0003] The existing public patent (publication number CN210498599U) discloses a honing reamer with adjustable length. A grinding bar bracket is installed on the left side of the adjustment mandrel, and diamond grinding bars are distributed on the grinding bar bracket. The length of the adjustment mandrel and the cutter body can be adjusted through threaded cooperation, so that the grinding bar bracket can be adjusted to adapt to the processing of workpiece holes of different depth specifications. At the same time, a scale line is provided on the adjustment mandrel. When adjusting, the required length can be adjusted according to the scale line to process the workpiece hole.

[0004] However, there are some problems in the use of existing reamers: 1. The current reamers adjust the length of the reamer through the mutual engagement of pre-set screw holes and bolts, but the pre-set screw holes and bolts cannot cover all length size ranges, which affects the accuracy of adjustment; 2. After adjusting the length position, the screw hole and the fixing bolt need to be aligned with each other to achieve the positioning effect. If the standard is not met, repeated calibration is required, which affects the convenience of adjustment. Utility Model Content

[0005] The purpose of the present invention is to provide a reamer with a length adjustment function to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising a knife bar, a telescopic assembly arranged inside the knife bar, and a locking assembly arranged on the front surface of the telescopic assembly;

[0007] The telescopic assembly includes a bottom groove provided inside the lower end of the knife rod, a first bevel gear is mounted on the left inner wall of the bottom groove, a knob is mounted on the left end of the first bevel gear, and a second bevel gear that cooperates with the first bevel gear is mounted on the upper end of the bottom groove;

[0008] The locking assembly includes a screw groove provided on the front side surface of the upper end of the knife rod, a bolt is fitted in the screw groove, and a clamping block is movably fitted on the rear side surface of the bolt.

[0009] As a further solution of the present invention: the telescopic assembly also includes a telescopic groove opened on the upper outside of the bottom groove, a screw is installed in the telescopic groove, and the lower end of the screw is connected to the second bevel gear, and a telescopic column is fitted on the outer wall of the screw.

[0010] As a further solution of the present invention: the telescopic assembly further includes limiting grooves provided on the front and rear sides of the telescopic slot, and limiting plates cooperating with the limiting grooves are installed on the front and rear surfaces of the telescopic column.

[0011] As a further solution of the present invention: the shape and size of the rear side surface of the clamping block match the shape and size of the side surface of the telescopic column, and the clamping grooves provided on the rear surface of the clamping block match the clamping grooves provided on the surface of the telescopic column.

[0012] As a further solution of the present invention: a cutter head is fixedly mounted on the upper surface of the telescopic column.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] When the length of the reamer needs to be adjusted, the knob is twisted to drive the first bevel gear connected thereto to rotate, which is engaged with the tooth pattern provided on the outer wall and drives the second bevel gear to rotate. The rotation of the second bevel gear drives the screw connected thereto to rotate, which is engaged with the threaded pattern provided on the outer wall and drives the telescopic column of the matching set to move up and down in the telescopic slot. Under the sliding effect of the limit plate embedded in the limit slot, the telescopic column slides stably up and down in the telescopic slot, so that the distance between the cutter head installed on the upper end and the cutter rod can be stably adjusted.

[0015] After the length of the reamer is adjusted, the bolt is twisted to engage in the screw groove and move backward, driving the clamping block rotatably connected to the rear surface of the bolt to move backward, so that the grooves on the rear surface of the clamping block are embedded in the grooves provided on the surface of the telescopic column, thereby effectively locking the adjusted length of the cutter bar and ensuring stability after adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0017] Figure 2 This is a cross-sectional diagram of the telescopic assembly and the locking assembly of an embodiment of the present utility model;

[0018] Figure 3 For the embodiment of the utility model Figure 1 Middle A is a partial enlarged schematic diagram;

[0019] Figure 4 This is a schematic diagram of a card block according to an embodiment of the present utility model.

[0020] In the figure: 1. Cutter bar; 201. Bottom groove; 202. First bevel gear; 203. Knob; 204. Second bevel gear; 205. Telescopic groove; 206. Screw; 207. Telescopic column; 208. Limiting groove; 209. Limiting plate; 301. Screw groove; 302. Bolt; 303. Block; 4. Cutter head. DETAILED DESCRIPTION

[0021] To facilitate solving the problem, the present invention provides a reamer with a length adjustment function. The following, in conjunction with the accompanying drawings, provides a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments represent only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. Example 1

[0022] like Figures 1 to 4 As shown, this embodiment provides a reamer with a length adjustment function, including a tool rod 1, a telescopic assembly arranged inside the tool rod 1, and a locking assembly arranged on the front surface of the telescopic assembly, the telescopic assembly including a bottom groove 201 opened inside the lower end of the tool rod 1, the left inner wall of the bottom groove 201 is cooperated with the installation of a first bevel gear 202, the left end of the first bevel gear 202 is cooperated with the connection of a knob 203, the upper end of the bottom groove 201 is installed with a second bevel gear 204 that cooperates with the first bevel gear 202, so as to facilitate precise adjustment of the length, the locking assembly includes a screw groove 301 opened on the front surface of the upper end of the tool rod 1, a bolt 302 is cooperated with the installation inside the screw groove 301, and a block 303 is movably installed on the rear surface of the bolt 302, so as to facilitate efficient and stable locking after adjustment. Example 2

[0023] In addition to all the technical features of the first embodiment, this embodiment further includes: the telescopic assembly further includes a telescopic groove 205 provided on the upper outer side of the bottom groove 201, a screw 206 is fitted in the telescopic groove 205, and the lower end of the screw 206 is connected to the second bevel gear 204, and a telescopic column 207 is fitted on the outer wall of the screw 206 to facilitate efficient adjustment of the length and position of the reamer.

[0024] Furthermore, the telescopic assembly also includes limiting grooves 208 provided on the front and rear sides of the telescopic slot 205, and limiting plates 209 cooperating with the limiting grooves 208 are installed on the front and rear surfaces of the telescopic column 207 to make the adjustment more stable.

[0025] Furthermore, the shape and size of the rear surface of the block 303 match the shape and size of the side surface of the telescopic column 207, and the card grooves set on the rear surface of the block 303 match the card grooves set on the surface of the telescopic column 207, so as to facilitate stable and firm locking after adjustment.

[0026] Furthermore, a cutter head 4 is fixedly mounted on the upper surface of the telescopic column 207, so as to effectively adjust the spacing size of the cutter heads 4 of the reamer.

[0027] The second bevel gear 204 is rotated by the rotation of the second bevel gear 204, and the second bevel gear 204 is rotated by the rotation of the second bevel gear 204, which drives the screw 206 connected to it to rotate. The screw thread engagement provided on the outer wall drives the telescopic column 207 of the matching set to move up and down in the telescopic slot 205. Under the sliding effect of the limit plate 209 embedded in the limit slot 208, the telescopic column 207 slides stably up and down in the telescopic slot 205, and the distance between the cutter head 4 installed at the upper end and the cutter rod 1 is stably adjusted. When the length of the reamer is adjusted, the bolt 302 is twisted to engage in the screw groove 301 and move backward, driving the block 303 rotatably connected to the rear surface of the bolt 302 to move backward, so that the card pattern on the rear surface of the card pattern 303 is embedded in the card pattern provided on the surface of the telescopic column 207, thereby effectively locking the length adjustment of the cutter rod 1 to ensure the stability after adjustment.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0029] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A reamer with length adjustment function, characterized in that: It comprises a knife rod (1), a telescopic component arranged inside the knife rod (1), and a locking component arranged on the front surface of the telescopic component; The telescopic assembly comprises a bottom groove (201) provided inside the lower end of the knife rod (1); a first bevel gear (202) is mounted on the left inner wall of the bottom groove (201); a knob (203) is mounted on the left end of the first bevel gear (202); and a second bevel gear (204) is mounted on the upper end of the bottom groove (201) and is engaged with the first bevel gear (202); The locking assembly comprises a screw groove (301) provided on the front surface of the upper end of the knife rod (1), a bolt (302) is fitted in the screw groove (301), and a clamping block (303) is movably fitted on the rear surface of the bolt (302).

2. The reamer with length adjustment function according to claim 1, characterized in that: The telescopic assembly further comprises a telescopic groove (205) provided on the upper outer side of the bottom groove (201), a screw (206) being fitted in the telescopic groove (205), the lower end of the screw (206) being connected to the second bevel gear (204), and a telescopic column (207) being fitted on the outer wall of the screw (206).

3. The reamer with length adjustment function according to claim 2, characterized in that: The telescopic assembly further comprises limiting grooves (208) provided on the front and rear sides of the telescopic groove (205), and limiting plates (209) cooperating with the limiting grooves (208) are mounted on the front and rear surfaces of the telescopic column (207).

4. The reamer with length adjustment function according to claim 2, characterized in that: The shape and size of the rear side surface of the clamping block (303) match the shape and size of the side surface of the telescopic column (207), and the clamping grooves provided on the rear surface of the clamping block (303) match the clamping grooves provided on the surface of the telescopic column (207).

5. The reamer with length adjustment function according to claim 2, characterized in that: A cutter head (4) is fixedly mounted on the upper surface of the telescopic column (207).

Images