Adjustable reamer convenient to install

Abstract

The utility model relates to the technical field of reamers, in particular to an adjustable reamer convenient to install, which comprises a reamer bar, the bottom end of the reamer bar is fixedly connected with a connecting box, a reamer head is arranged below the reamer bar, and the top end of the reamer head extends into the connecting box and is fixedly connected with a vertical rod. The push block is held to drive the transverse rod to move through the rectangular seat, the transverse rod drives the square rod to be separated from the arc-shaped block and the supporting block through the rectangular rod, and when the tool bit is moved downwards for replacement and installation, the tool bit is moved upwards to drive the arc-shaped block to move upwards through the vertical rod to extrude the ball, and the square rod drives the vertical block to compress the spring. When the arc-shaped surface of the arc-shaped block is staggered from the ball, the elastic force of the spring drives the square rod to move to the position between the arc-shaped block and the supporting block, so that the tool bit is installed, the tool bit and the tool bar are conveniently and rapidly installed, bolt connection is not needed, and the phenomena of bolt loosening and unstable connection caused in the long-time use process of the tool bit are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of reamer, in particular to an adjustable reamer which is easy to install. Background Art

[0002] A reamer is a rotary tool with one or more teeth used to remove a thin layer of metal from the surface of a processed hole. A reamer is a rotary finishing tool with a straight or spiral blade, used for expanding or repairing holes. Due to its small cutting volume, a reamer usually has higher machining accuracy requirements than a drill. It can be operated manually or installed on a drilling machine. A reamer has one or more teeth, used to remove a thin layer of metal from the surface of a processed hole. The hole processed by the reamer can obtain precise size and shape. Existing reamers need to adjust and replace the cutter head during the processing of different products. Most existing cutter heads are screwed to the inside of the cutter bar through bolts or direct threads during installation with the cutter bar.

[0003] However, most of the current cutter heads are installed with the cutter bar by bolts or by directly rotating the threads to the inner side of the cutter bar, which is not convenient for quick installation. At the same time, the bolts are easily loosened during the long-term use of the cutter head, which easily leads to unstable connection. Therefore, we propose an adjustable reamer that is easy to install to solve the above problems. Utility Model Content

[0004] The utility model aims to provide an adjustable reamer which is easy to install, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable reamer that is easy to install, comprising a tool rod, the bottom end of the tool rod is fixedly connected to a connecting box, a tool head is provided below the tool rod, the top end of the tool head extends into the connecting box and is fixedly connected to a vertical rod, the connecting box is slidably sleeved on the outside of the tool head, both sides of the vertical rod are fixedly connected to an arc block and a support block, the arc block and the corresponding support block are movably contacted with the same square rod, the end of the square rod is embedded with a ball, the ball cooperates with the corresponding arc block, the ends of the two square rods away from each other extend to the outside of the connecting box and are fixedly connected to a rectangular rod, the connecting box is slidably sleeved on the outside of the two square rods, the front end of the rectangular rod is rotatably connected to a connecting rod, and the front ends of the two connecting rods are rotatably connected to the same cross rod.

[0006] Further preferably, a fixing block is fixedly connected to the top inner wall of the connection box, and a clamping rod is fixedly connected to the top end of the vertical rod.

[0007] Further preferably, a slot is provided at the bottom of the fixing block, and the clamping rod is clamped in the slot.

[0008] Further preferably, two positioning rods are fixedly connected to the inner walls on both sides of the connection box, and vertical blocks are fixedly connected to the top and bottom of the square rod.

[0009] Further preferably, the vertical block is slidably sleeved on the outer side of the corresponding positioning rod, and a same spring is fixedly connected between the vertical block and the side wall of the connection box.

[0010] Further preferably, the spring is movably sleeved on the outside of the corresponding positioning rod, the front side of the connection box is fixedly connected to two round rods, and the cross rod is slidably sleeved on the outside of the two round rods.

[0011] Further preferably, a rectangular seat is fixedly connected to the front side of the cross bar, and a push block is fixedly connected to the front side of the rectangular seat.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model holds the push block and drives the cross bar to move through the rectangular seat, and the cross bar drives the square bar to separate from the arc block and the support block through the rectangular bar. At this time, the cutter head is moved downward for replacement. During installation, the cutter head is moved upward and drives the arc block to move upward through the vertical bar to squeeze the ball, and the square bar drives the vertical block to compress the spring. When the arc surface of the arc block is offset from the ball, the elastic force of the spring drives the square bar to move between the arc block and the support block, thereby completing the installation of the cutter head, facilitating and quickly installing the cutter head and the cutter bar, without the need for bolt connection, thus avoiding loosening of the bolts during long-term use of the cutter head and avoiding the phenomenon of unstable connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the main three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the connection box in the utility model;

[0015] Figure 3 for Figure 1 Schematic diagram of the enlarged three-dimensional structure of area A in the middle.

[0016] In the figure: 1. knife bar; 2. connecting box; 3. knife head; 4. vertical rod; 5. arc block; 6. support block; 7. square rod; 8. ball bearing; 9. rectangular rod; 10. connecting rod; 11. cross rod; 12. fixing block; 13. clamping rod; 14. clamping groove; 15. positioning rod; 16. vertical block; 17. spring; 18. round rod; 19. rectangular seat; 20. push block. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Example

[0019] See also Figure 1-3 The utility model provides a technical solution: an adjustable reamer that is easy to install, comprising a tool rod 1, a connecting box 2 is fixedly connected to the bottom end of the tool rod 1, a tool head 3 is arranged below the tool rod 1, the top end of the tool head 3 extends into the connecting box 2 and is fixedly connected to a vertical rod 4, the connecting box 2 is slidably sleeved on the outside of the tool head 3, arc blocks 5 and support blocks 6 are fixedly connected on both sides of the vertical rod 4, the arc blocks 5 and the corresponding support blocks 6 are movably contacted with the same square rod 7, the ends of the square rod 7 are embedded with balls 8, the balls 8 cooperate with the corresponding arc blocks 5, the ends of the two square rods 7 away from each other are extended to the outside of the connecting box 2 and are fixedly connected to rectangular rods 9, the connecting box 2 is slidably sleeved on the outsides of the two square rods 7, the front ends of the rectangular rods 9 are rotatably connected to a connecting rod 10, and the two connecting rods 1 0 is rotatably connected with the same cross bar 11, and the push block 20 is held and driven to move the cross bar 11 through the rectangular seat 19, and the cross bar 11 drives the square bar 7 to separate from the arc block 5 and the support block 6 through the rectangular rod 9. At this time, the cutter head 3 is moved downward for replacement. During installation, the cutter head 3 is moved upward and the arc block 5 is driven upward by the vertical rod 4 to squeeze the ball 8, and the square rod 7 drives the vertical block 16 to compress the spring 17. When the arc surface of the arc block 5 is offset from the ball 8, the elastic force of the spring 17 drives the square rod 7 to move between the arc block 5 and the support block 6, so that the installation of the cutter head 3 is completed, which is convenient for quickly installing the cutter head 3 and the cutter rod 1, and no bolt connection is required, so as to avoid the loosening of the bolts during the long-term use of the cutter head 3 and avoid the phenomenon of unstable connection.

[0020] In this embodiment, specifically: a fixing block 12 is fixedly connected to the top inner wall of the connection box 2, and a clamping rod 13 is fixedly connected to the top of the vertical rod 4. The setting of the clamping rod 13 plays a positioning effect;

[0021] In this embodiment, specifically: a card slot 14 is provided at the bottom of the fixing block 12, and the card rod 13 is card-engaged with the card slot 14;

[0022] In this embodiment, specifically: two positioning rods 15 are fixedly connected to the inner walls of both sides of the connection box 2, and vertical blocks 16 are fixedly connected to the top and bottom of the square rod 7;

[0023] In this embodiment, specifically: the vertical block 16 is slidably sleeved on the outer side of the corresponding positioning rod 15, and the vertical block 16 and the side wall of the connection box 2 are fixedly connected with the same spring 17, and the setting of the spring 17 plays an effect of automatic reset;

[0024] In this embodiment, specifically: the spring 17 is movably sleeved on the outside of the corresponding positioning rod 15, the front side of the connection box 2 is fixedly connected to two round rods 18, and the cross bar 11 is slidably sleeved on the outside of the two round rods 18;

[0025] In this embodiment, specifically: a rectangular seat 19 is fixedly connected to the front side of the cross bar 11, and a push block 20 is fixedly connected to the front side of the rectangular seat 19. The arrangement of the push block 20 is convenient for operation.

[0026] The utility model is at work: when in use, when it is necessary to adjust and replace the cutter head 3 of other specifications, hold the push block 20 and move it backward, the push block 20 drives the rectangular seat 19 to move, the rectangular seat 19 drives the cross bar 11 to move, the cross bar 11 slides on the outside of the two round bars 18, and the cross bar 11 squeezes the two connecting rods 10 during the movement. Under the action of the squeezing force, the connecting rod 10 moves and rotates, and the connecting rod 10 drives the corresponding rectangular rod 9 to move, the rectangular rod 9 drives the corresponding square rod 7 to move, the square rod 7 drives the corresponding ball 8 to move, the square rod 7 drives the two vertical blocks 16 to move, the vertical block 16 slides on the outside of the corresponding positioning rod 15, and the vertical block 16 compresses the corresponding spring 17 during the movement, and the square rod 7 is separated from the corresponding arc block 5 and the supporting block 6. At this time, the cutter head 3 is moved downward, and the cutter head 3 drives the vertical rod 4 to move downward, and the vertical rod 4 drives the clamping rod 13 to separate from the clamping slot 14. At this time, the cutter head 3 can be removed for replacement. During installation, When the cutter head 3 is moved upward, the cutter head 3 drives the vertical rod 4 to move upward, and the vertical rod 4 drives the arc block 5 to move upward. During the movement, the arc surface of the arc block 5 squeezes the ball 8. Under the action of the squeezing force, the ball 8 drives the corresponding square rod 7 to move, and the square rod 7 drives the two vertical blocks 16 to move. The vertical block 16 slides on the outer side of the corresponding positioning rod 15. The vertical block 16 compresses the corresponding spring 17 during the movement. When the arc surface of the arc block 5 is staggered with the ball 8, the spring 17 in the compressed state is reset. The elastic force of the spring 17 drives the square rod 7 to move, and the square rod 7 drives the ball 8 to move, so that the square rod 7 moves to between the corresponding arc block 5 and the supporting block 6, so that the installation of the cutter head 3 is completed, thereby constituting an adjustable reamer that is easy to install, which is convenient for quickly installing the cutter head 3 and the cutter rod 1, and does not need to be connected by bolts, so as to avoid the loosening of the bolts during the long-term use of the cutter head 3 and avoid the phenomenon of unstable connection.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable reamer that is easy to install, comprising a shank (1), characterized in that: The bottom end of the knife rod (1) is fixedly connected to a connection box (2), a knife head (3) is provided below the knife rod (1), the top end of the knife head (3) extends into the connection box (2) and is fixedly connected to a vertical rod (4), the connection box (2) is slidably sleeved on the outside of the knife head (3), both sides of the vertical rod (4) are fixedly connected to an arc block (5) and a support block (6), and the arc block (5) and the corresponding support block (6) are movably contacted by a same square rod (7) The ends of the square rods (7) are embedded with balls (8), and the balls (8) cooperate with the corresponding arc blocks (5). The ends of the two square rods (7) that are away from each other extend to the outside of the connection box (2) and are fixedly connected to a rectangular rod (9). The connection box (2) is slidably sleeved on the outside of the two square rods (7). The front ends of the rectangular rods (9) are rotatably connected to a connecting rod (10), and the front ends of the two connecting rods (10) are rotatably connected to the same cross bar (11).

2. The adjustable reamer that is easy to install according to claim 1, characterized in that: A fixing block (12) is fixedly connected to the top inner wall of the connection box (2), and a clamping rod (13) is fixedly connected to the top end of the vertical rod (4).

3. The adjustable reamer that is easy to install according to claim 2, characterized in that: A clamping slot (14) is provided at the bottom of the fixing block (12), and the clamping rod (13) is clamped in the clamping slot (14).

4. The adjustable reamer that is easy to install according to claim 3 is characterized in that: Two positioning rods (15) are fixedly connected to the inner walls on both sides of the connection box (2), and vertical blocks (16) are fixedly connected to the top and bottom of the square rod (7).

5. The adjustable reamer that is easy to install according to claim 4, characterized in that: The vertical block (16) is slidably sleeved on the outer side of the corresponding positioning rod (15), and a spring (17) is fixedly connected between the vertical block (16) and the side wall of the connection box (2).

6. The adjustable reamer that is easy to install according to claim 5, characterized in that: The spring (17) is movably sleeved on the outside of the corresponding positioning rod (15), the front side of the connection box (2) is fixedly connected to two round rods (18), and the cross rod (11) is slidably sleeved on the outside of the two round rods (18).

7. The adjustable reamer that is easy to install according to claim 6, characterized in that: The front side of the cross bar (11) is fixedly connected to a rectangular seat (19), and the front side of the rectangular seat (19) is fixedly connected to a push block (20).

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