Reamer clamp capable of limiting torque

Abstract

The utility model belongs to the field of reamer clamps, and particularly relates to a reamer clamp capable of limiting torque, which comprises a reamer clamp body, a supporting shell is fixedly mounted at the bottom of the reamer clamp body, a placing groove is formed in the top of the reamer clamp body, and a plurality of accommodating grooves are formed in the inner wall of the placing groove. An arc-shaped friction block used for fixing a reamer is placed in the containing groove, a driving groove is formed in the inner wall of one side of the containing groove, a driving seat is slidably installed in the driving groove and fixedly connected with the arc-shaped friction block, a spring groove is formed in the inner wall of one side of the containing groove, and a fixing spring is fixedly installed on the inner wall of one side of the spring groove; and one end of the fixed spring is fixedly mounted on the arc-shaped friction block. The reamer is reasonable in design, the reamer can be clamped and fixed through the arc-shaped friction blocks, when the torque of the reamer is larger than the friction force between the reamer and the arc-shaped friction blocks, the reamer can slide at the moment, and therefore the reamer is protected against damage.

Description

Technical Field

[0001] The utility model relates to the technical field of reamer clamps, in particular to a reamer clamp capable of limiting torque. 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 machined hole. A reamer is a rotary finishing tool with a straight or spiral edge used for expanding or repairing holes.

[0003] At present, a reamer disclosed in a Chinese patent announcement with the announcement number CN202028834U includes a shank and a cutter head. The cutter head is provided with a rough reamer and a fine reamer in sequence along the axial direction, and the rough reamer is located at the starting end of the cutter head. The number of teeth of the rough reamer and the fine reamer is generally 4-8. The teeth of the rough reamer and the fine reamer are generally straight-edged, and the teeth are generally evenly distributed along the circumference. As a further improvement, the chip grooves of the rough reamer and the fine reamer are on the same straight line. The use of this reamer can simultaneously complete the rough machining and fine machining of the hole, forming it in one go, without the need for tool changing operations, which helps to improve work efficiency, ensure machining accuracy, and improve the service life of the tool as a whole.

[0004] However, the reamer needs to be clamped during reaming. After the reamer is clamped, if the torque applied to the reamer is large, the reamer is prone to damage. Therefore, we propose a reamer fixture that can limit torque to solve the above problem. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings in the prior art and to provide a reamer clamp capable of limiting torque.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A reamer fixture capable of limiting torque comprises a reamer fixture body, a support shell fixedly mounted on the bottom of the reamer fixture body, a placement slot formed on the top of the reamer fixture body, a plurality of receiving slots formed on the inner wall of the placement slot, and arc-shaped friction blocks for fixing the reamer placed in the receiving slots;

[0008] A driving groove is provided on the inner wall of one side of the storage groove, a driving seat is slidably installed in the driving groove, the driving seat is fixedly connected to the arc-shaped friction block, a spring groove is provided on the inner wall of one side of the storage groove, a fixed spring is fixedly installed on the inner wall of one side of the spring groove, and one end of the fixed spring is fixedly installed on the arc-shaped friction block.

[0009] Preferably, a driving plate is slidably installed in the support shell, a limiting mechanism is provided between the driving plate and the support shell, and an extrusion mechanism is provided between the driving plate and the driving seat.

[0010] Preferably, the extrusion mechanism includes an inclined slot and an extrusion rod, the inclined slot is opened on the bottom of the driving seat, the extrusion rod is fixedly mounted on the top of the driving plate, and the extrusion rod extends into the driving slot and is adapted to the inclined slot.

[0011] Preferably, the limiting mechanism includes a limiting groove and a limiting seat, the limiting groove is opened on the inner wall of the support shell, the limiting seat is fixedly installed on both sides of the driving plate, and the limiting seat is slidably connected to the corresponding limiting groove.

[0012] Preferably, two sliding grooves are provided on the inner wall of the bottom of the support shell, a sliding plate is slidably installed in the sliding groove, a plurality of hinged rods are hinged on the top of the sliding plate, and the top ends of the hinged rods are hinged on the driving plate.

[0013] Preferably, a plurality of connecting rods are fixedly mounted on one side of the two corresponding sliding plates close to each other, and the plurality of connecting rods are arranged at equal intervals.

[0014] Preferably, a threaded hole is provided on an inner wall of one side of the support shell, a driving screw is threadedly installed in the threaded hole, one end of the driving screw is rotatably installed on the corresponding sliding plate, and a handwheel is fixedly installed on the other end of the driving screw.

[0015] Preferably, a rotation groove is provided on the sliding plate, an annular groove is provided on the inner wall of the rotation groove, an annular seat is fixedly mounted on the driving screw, and the annular seat is rotatably connected to the annular groove.

[0016] Beneficial effects of the utility model:

[0017] 1. Place the reamer handle into the placement slot of the reamer fixture body. With the cooperation of the handwheel, drive screw, threaded hole, and sliding plate, the sliding plate can push the drive plate and the extrusion rod upward through the hinged rod. The extrusion rod squeezes the drive seat through the inclined slot. The drive seat can drive the arc-shaped friction block to move. The reamer can be clamped and fixed by multiple arc-shaped friction blocks.

[0018] 2. The arc-shaped friction block can be used to fix the reamer with a limited torque. When the torque of the reamer is greater than the friction between the reamer and the arc-shaped friction block, the reamer can slide, thereby protecting the reamer from damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a reamer fixture capable of limiting torque proposed by the present invention;

[0020] Figure 2 This is a schematic diagram of the cross-sectional three-dimensional structure of a reamer fixture capable of limiting torque proposed in the present invention;

[0021] Figure 3 This is a schematic structural diagram of part A of a reamer fixture capable of limiting torque proposed in the present invention;

[0022] Figure 4 This is a structural schematic diagram of part B of a reamer fixture capable of limiting torque proposed in the present invention.

[0023] In the figure: 1. Reamer fixture body; 2. Support shell; 3. Placement slot; 4. Storage slot; 5. Arc friction block; 6. Spring slot; 7. Fixed spring; 8. Drive slot; 9. Drive seat; 10. Bevel slot; 11. Drive plate; 12. Extrusion rod; 13. Limiting mechanism; 14. Sliding slot; 15. Sliding plate; 16. Connecting rod; 17. Articulated rod; 18. Threaded hole; 19. Drive screw; 20. Handwheel. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions of the present invention in conjunction with specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, and 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 also within the scope of protection of the present invention.

[0025] Reference Figure 1-4 A reamer clamp with limited torque includes a reamer clamp body 1, a support shell 2 is fixedly installed at the bottom of the reamer clamp body 1, a placement groove 3 is opened on the top of the reamer clamp body 1, a plurality of receiving grooves 4 are opened on the inner wall of the placement groove 3, an arc-shaped friction block 5 for fixing the reamer is placed in the receiving groove 4, a driving groove 8 is opened on the inner wall of one side of the receiving groove 4, a driving seat 9 is slidably installed in the driving groove 8, the driving seat 9 is fixedly connected to the arc-shaped friction block 5, and a spring groove 6 is opened on the inner wall of one side of the receiving groove 4. A fixing spring 7 is fixedly installed on the inner wall of one side of the spring groove 6, and one end of the fixing spring 7 is fixedly installed on the arc-shaped friction block 5. By providing the fixing spring 7, the fixing spring 7 can pull the arc-shaped friction block 5 to be stored in the storage groove 4. The reamer can be clamped and fixed by multiple arc-shaped friction blocks 5. The reamer can be fixed with a limited torque by the arc-shaped friction block 5. When the torque of the reamer is greater than the friction force between the reamer and the arc-shaped friction block 5, the reamer can slide at this time, thereby protecting the reamer from damage.

[0026] In this embodiment, a driving plate 11 is slidably installed in the support shell, a limiting mechanism 13 is provided between the driving plate 11 and the supporting shell 2, and an extrusion mechanism is provided between the driving plate 11 and the driving seat 9. The extrusion mechanism includes an inclined groove 10 and an extrusion rod 12. The inclined groove 10 is opened on the bottom of the driving seat 9, and the extrusion rod 12 is fixedly installed on the top of the driving plate 11, and the extrusion rod 12 extends into the driving groove 8 and is adapted to the inclined groove 10. When the driving plate 11 and the extrusion rod 12 move upward, the extrusion rod 12 squeezes the driving seat 9 through the inclined groove 10, and the driving seat 9 can drive the arc-shaped friction block 5 to move, and the reamer can be clamped and fixed by multiple arc-shaped friction blocks 5.

[0027] In this embodiment, the limiting mechanism 13 includes a limiting groove and a limiting seat. The limiting groove is opened on the inner wall of the support shell 2. The limiting seat is fixedly installed on both sides of the driving plate 11, and the limiting seat is slidingly connected to the corresponding limiting groove. By setting the limiting groove and the limiting seat, the driving plate 11 can be guided, so that the purpose of stable movement of the driving plate 11 can be achieved.

[0028] In this embodiment, two sliding grooves 14 are provided on the inner wall of the bottom of the support shell 2, and a sliding plate 15 is slidably installed in the sliding groove 14. The top of the sliding plate 15 is hinged with multiple hinged rods 17, and the top end of the hinged rod 17 is hinged to the driving plate 11. A plurality of connecting rods 16 are fixedly installed on the side where the two corresponding sliding plates 15 are close to each other. The multiple connecting rods 16 are arranged at equal intervals. By providing multiple connecting rods 16, the two sliding plates 15 can be moved synchronously.

[0029] In this embodiment, a threaded hole 18 is provided on the inner wall of one side of the support shell 2, and a driving screw 19 is installed on the inner thread of the threaded hole 18. One end of the driving screw 19 is rotatably installed on the corresponding sliding plate 15, and the other end of the driving screw 19 is fixedly installed with a handwheel 20. A rotating groove is provided on the sliding plate 15, and an annular groove is provided on the inner wall of the rotating groove. An annular seat is fixedly installed on the driving screw 19, and the annular seat is rotatably connected to the annular groove. By rotating the handwheel 20 and the driving screw 19, under the action of the threaded hole 18, the driving screw 19 can rotate and move at the same time, and the driving screw 19 can drive the corresponding sliding plate 15 to move.

[0030] In the present invention, the shank of the reamer is placed in the placement groove 3 of the reamer clamp body 1, and the hand wheel 20 and the driving screw 19 are rotated. Under the action of the threaded hole 18, the driving screw 19 can rotate and move at the same time, and the driving screw 19 can drive the corresponding sliding plate 15 to move. Under the action of the connecting rod 16, the two sliding plates 15 move synchronously. The sliding plate 15 can push the driving plate 11 and the extrusion rod 12 to move upward through the hinge rod 17. The extrusion rod 12 squeezes the driving seat 9 through the inclined groove 10, and the driving seat 9 can drive the arc-shaped friction block 5 to move. The reamer can be clamped and fixed by multiple arc-shaped friction blocks 5, and the reamer can be fixed with a limited torque by the arc-shaped friction block 5. When the torque of the reamer is greater than the friction force between the reamer and the arc-shaped friction block 5, the reamer can slide at this time, thereby protecting the reamer from damage.

[0031] The above describes in detail the torque-limiting reamer fixture provided by the present invention. This article uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is intended only to facilitate understanding of the method and core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A reamer fixture capable of limiting torque, characterized in that: The reamer clamp comprises a reamer clamp body (1), a support shell (2) is fixedly mounted on the bottom of the reamer clamp body (1), a placement groove (3) is provided on the top of the reamer clamp body (1), a plurality of receiving grooves (4) are provided on the inner wall of the placement groove (3), and arc-shaped friction blocks (5) for fixing the reamer are placed in the receiving grooves (4); A driving groove (8) is provided on the inner wall of one side of the receiving groove (4), a driving seat (9) is slidably installed in the driving groove (8), and the driving seat (9) is fixedly connected to the arc-shaped friction block (5). A spring groove (6) is provided on the inner wall of one side of the receiving groove (4), and a fixed spring (7) is fixedly installed on the inner wall of one side of the spring groove (6), and one end of the fixed spring (7) is fixedly installed on the arc-shaped friction block (5).

2. A reamer fixture capable of limiting torque according to claim 1, characterized in that: A driving plate (11) is slidably mounted in the supporting shell, a limiting mechanism (13) is provided between the driving plate (11) and the supporting shell (2), and a squeezing mechanism is provided between the driving plate (11) and the driving seat (9).

3. A reamer fixture capable of limiting torque according to claim 2, characterized in that: The extrusion mechanism comprises an inclined slot (10) and an extrusion rod (12), wherein the inclined slot (10) is opened on the bottom of the driving seat (9), and the extrusion rod (12) is fixedly mounted on the top of the driving plate (11), and the extrusion rod (12) extends into the driving slot (8) and is adapted to the inclined slot (10).

4. A reamer fixture capable of limiting torque according to claim 2, characterized in that: The limiting mechanism (13) comprises a limiting groove and a limiting seat, wherein the limiting groove is provided on the inner wall of the support shell (2), the limiting seat is fixedly mounted on both sides of the driving plate (11), and the limiting seat is slidably connected to the corresponding limiting groove.

5. The torque-limited reamer fixture according to claim 1, characterized in that: Two sliding grooves (14) are provided on the inner wall of the bottom of the support shell (2), and a sliding plate (15) is slidably installed in the sliding groove (14). The top of the sliding plate (15) is hinged with a plurality of hinge rods (17), and the top end of the hinge rod (17) is hinged on the driving plate (11).

6. The torque-limited reamer fixture according to claim 5, characterized in that: A plurality of connecting rods (16) are fixedly mounted on one side of the two corresponding sliding plates (15) close to each other, and the plurality of connecting rods (16) are arranged at equal intervals.

7. The torque-limited reamer fixture according to claim 6, characterized in that: A threaded hole (18) is provided on an inner wall of one side of the support shell (2), and a driving screw (19) is installed in the threaded hole (18). One end of the driving screw (19) is rotatably mounted on the corresponding sliding plate (15), and the other end of the driving screw (19) is fixedly mounted with a hand wheel.

8. The torque-limited reamer fixture according to claim 7, characterized in that: The sliding plate (15) is provided with a rotation groove, an annular groove is provided on the inner wall of the rotation groove, an annular seat is fixedly mounted on the driving screw (19), and the annular seat is rotationally connected to the annular groove.

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