Floating reamer

Abstract

The utility model discloses a floating reamer, which is applied to the field of drilling and milling machines and comprises a reamer handle, a mounting cavity is arranged in the reamer handle, a floating mechanism is arranged in the mounting cavity, a reamer bar mechanism is arranged in the floating mechanism, and the reamer handle, the mounting cavity, the floating mechanism and the reamer bar mechanism are arranged. The floating mechanism is arranged in the mounting cavity, and then the cutter bar mechanism is arranged in the floating mechanism, so that the cutter bar mechanism can axially float in the floating mechanism, the reaming position can be corrected at any time, and the situation that the reaming center line is not on the drilling center line can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling and milling machines, in particular to a floating reamer. Background Art

[0002] A CNC milling machine is an automatic processing equipment that controls the milling cutter to move in straight and curved lines in three-dimensional space through a computer or single-chip microcomputer to achieve precise cutting on the workpiece. Due to the high precision, high efficiency and diverse processing capabilities of CNC milling machines, they are used to manufacture parts and molds. Floating cutters are required in CNC milling machines.

[0003] The Chinese utility model patent currently announced as CN211889261U discloses a reamer with a self-protection function, which is provided with a reamer handle, one end of the reamer handle is connected and installed with a reamer head, and the other side of the reamer handle is connected and installed with a protection module, the protection module includes friction plate 1, friction plate 2, a spring, and a bearing, the top end of the spring is connected to a pressure block, and the other end of the pressure block is screwed with an adjustable screw, a bearing is installed on the outer side of the friction plate 1, and the top end of the friction plate 1 is correspondingly installed with a friction plate 2, and one side of the friction plate 2 is fixedly connected with a spring, and the friction plate 2 is driven to fit tightly with the friction plate 1 by tightening the adjustable screw downward. When the reamer part is driven to rotate by the machinery, if the friction force of the reaming hole part is too large, the elastic force of the spring will cause the friction plate 1 and the friction plate 2 to slip, and the reamer handle and the reamer head stop rotating, which protects the reamer head and the workpiece to be processed and prevents damage to the reamer head or the processed object.

[0004] The reamer of this patent cannot float in the axial direction. If the repeated positioning accuracy of the equipment is inaccurate, it is easy for the center line of the reaming hole to be different from the center line of the drilling hole, resulting in an excessively high rate of defective products in the processed workpiece. Utility Model Content

[0005] The purpose of the utility model is to provide a floating reamer to solve the problems mentioned in the above background problems.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: a floating reamer, comprising a handle, a mounting cavity is arranged inside the handle, a floating mechanism is arranged inside the mounting cavity, and a tool rod mechanism is arranged inside the floating mechanism;

[0007] The floating mechanism includes a rotating disk, a limiting hole, a limiting column, an end column, a ball and a clearance groove. The rotating disk is arranged inside the installation cavity. There are two rotating disks and they are respectively arranged at the upper bottom and the lower bottom of the installation cavity. The limiting hole is arranged on the rotating disk and passes through the rotating disk. There are four limiting holes and they are arranged circumferentially. One end of the limiting column is arranged on the inner wall of the installation cavity and is located in the limiting hole. The end column is arranged between the two rotating disks. The ball is arranged on the rotating disk. There are several balls and they are arranged circumferentially. The clearance groove is arranged on the end column. The clearance groove is arranged corresponding to the ball. The diameter of the clearance groove is larger than the diameter of the ball.

[0008] The above technical scheme is adopted, by setting a tool handle, a mounting cavity, a floating mechanism and a tool rod mechanism. When in use, the floating mechanism is set in the mounting cavity, and then the tool rod mechanism is set in the floating mechanism. The tool rod mechanism can float axially in the floating mechanism, and the reaming position can be corrected at any time, which can avoid the situation where the center line of the reaming hole is not on the center line of the drilling hole. The floating mechanism includes a rotating disk, a limit hole, a limit column, an end column, a ball and a clearance groove. When in use, first the limit hole and the limit column are used in combination to fix the two rotating disks on the inner top and inner bottom of the mounting cavity respectively, and then the ball is set on the rotating disk. Since the cross-sectional area of ​​the clearance groove on the end column is larger than the cross-sectional area of ​​the ball, the end column can float axially in the mounting cavity.

[0009] The utility model is further configured as follows: the tool rod mechanism includes a mounting groove, a tool rod, a mounting seat and a tool head, the mounting groove is arranged in the end column, the tool rod is threadedly connected to the inside of the mounting groove, the mounting seat is arranged at one end of the tool rod, the tool head is arranged on the mounting seat, and the cross section of the tool head is a trapezoid.

[0010] By adopting the above technical solution, by setting the installation groove, the tool rod, the mounting seat and the tool head, when in use, the installation groove is first opened in the end column. Since the tool rod and the installation groove are connected by threads, the tool rod can be fixed in the installation groove, and then the mounting seat can install the tool head. The tool head with a trapezoidal cross-section can better perform reaming.

[0011] The utility model is further configured as follows: a spring groove is provided above the installation cavity, a spring is provided inside the spring groove, a connecting ball is provided at one end of the spring, the connecting ball is fixedly connected to the end column, and a movable part is provided at the lower end of the spring groove.

[0012] By adopting the above technical solution, a spring groove, a spring, a connecting ball and a movable part are set. When the end column floats axially in the installation cavity, the spring can be driven to deform through the connecting ball. When the knife rod stops jumping, the spring restores the deformation and can return the end column to the original position, which is convenient for floating again. The spring groove can install the spring, and then the movable part can provide space for the movement of the connecting ball.

[0013] The utility model is further configured as follows: a fixing sleeve is arranged at the lower end of the end column, a bolt is arranged on the fixing sleeve, the bolt passes through the fixing sleeve and the knife rod, and a locking sleeve is arranged on the bolt.

[0014] By adopting the above technical solution, a fixing sleeve, a bolt and a locking sleeve are set. When in use, the fixing sleeve is first set at the lower end of the end column, and then the bolt can pass through the fixing sleeve and the knife rod, and then the bolt is locked by the locking sleeve, at which time the knife rod can be further fixed in the fixing sleeve.

[0015] The utility model is further configured as follows: a limiting groove is arranged below the installation cavity, a limiting sleeve is arranged on the end column, the limiting sleeve is located in the limiting groove, the lateral space of the limiting groove is larger than the limiting sleeve, and the cross-sections of the limiting groove and the limiting sleeve are both T-shaped.

[0016] By adopting the above technical solution, by setting the limiting groove and the limiting sleeve, when in use, the limiting sleeve and the limiting groove are used in combination to further limit the end column and better fix the end column in the installation cavity.

[0017] The utility model is further configured as follows: a frosted layer for grinding the inner wall of the reamed hole is provided on the mounting seat.

[0018] By adopting the above technical solution and providing a frosted layer, the aesthetics of the mounting seat can be enhanced and damage to the mounting seat can be avoided.

[0019] The utility model is further configured as follows: the knife handle is provided with an anti-slip coating that increases friction.

[0020] By adopting the above technical solution and providing an anti-skid coating, the anti-skid coating can increase the friction between the staff and the knife handle during use, making it easier for the staff to pick up the knife handle.

[0021] In summary, the utility model has the following beneficial effects:

[0022] By setting a rotating disk, a limiting hole, a limiting column, an end column, a ball and a clearance groove, when in use, first the limiting hole and the limiting column are used in combination to fix the two rotating disks on the inner top and inner bottom of the installation cavity respectively, and then the ball is set on the rotating disk. Since the cross-sectional area of ​​the clearance groove on the end column is larger than the cross-sectional area of ​​the ball, the end column can float axially in the installation cavity.

[0023] By setting the spring groove, spring, connecting ball and movable part, when the end column floats axially in the installation cavity, the spring can be driven to deform through the connecting ball. When the knife rod stops jumping, the spring restores the deformation and can return the end column to the correct position, which is convenient for floating again. The spring groove can be used to install the spring, and the movable part can provide space for the movement of the connecting ball.

[0024] Based on the above-mentioned improvements, the overall technical effect achieved by the present device is that the end column can float in the installation cavity, which can facilitate adjustment of the cutter head when reaming a hole so that the center line of the reaming hole coincides with the center line of the drilling hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a left view of the utility model;

[0027] Figure 3 This utility model Figure 2 Stereoscopic cross-section at AA in the middle;

[0028] Figure 4 It is a structural schematic diagram of the floating mechanism of the utility model.

[0029] In the figure, 1, tool handle; 2, mounting cavity; 3, floating mechanism; 4, tool rod mechanism; 5, spring groove; 6, spring; 7, connecting ball; 8, movable part; 9, fixing sleeve; 10, bolt; 11, locking sleeve; 12, limiting groove; 13, limiting sleeve; 14, frosted layer; 15, anti-slip coating; 301, rotating disk; 302, limiting hole; 303, limiting column; 304, end column; 305, ball bearing; 306, clearance groove; 401, mounting groove; 402, tool rod; 403, mounting seat; 404, tool head. DETAILED DESCRIPTION

[0030] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0031] Example:

[0032] See also Figure 1-Figure 4 The utility model provides a technical solution: a floating reamer includes a handle 1, a mounting cavity 2 is arranged inside the handle 1, a floating mechanism 3 is arranged inside the mounting cavity 2, and a tool rod mechanism 4 is arranged inside the floating mechanism 3.

[0033] The floating mechanism 3 includes a rotating disk 301, a limiting hole 302, a limiting column 303, an end column 304, a ball 305 and a clearance groove 306. The rotating disk 301 is arranged inside the installation cavity 2. There are two rotating disks 301 and they are respectively arranged at the upper bottom and the lower bottom of the installation cavity 2. The limiting hole 302 is arranged on the rotating disk 301 and passes through the rotating disk 301. There are four limiting holes 302 and they are arranged circumferentially. One end of the limiting column 303 is arranged on the inner wall of the installation cavity 2 and is located in the limiting hole 302. The end column 304 is arranged between the two rotating disks 301. The ball 305 is arranged on the rotating disk 301. There are several balls 305 and they are arranged circumferentially. The clearance groove 306 is arranged on the end column 304. The clearance groove 306 is arranged corresponding to the ball 305. The diameter of the clearance groove 306 is greater than the diameter of the ball 305. By setting the tool handle 1 and the installation The mounting cavity 2, the floating mechanism 3 and the tool rod mechanism 4, when in use, the floating mechanism 3 is arranged in the mounting cavity 2, and then the tool rod mechanism 4 is arranged in the floating mechanism 3, so that the tool rod mechanism 4 can float axially in the floating mechanism 3, and the reaming position can be corrected at any time, and the situation that the center line of the reaming hole is not on the center line of the drilling hole can be avoided, wherein the floating mechanism 3 includes a rotating disk 301, a limiting hole 302, a limiting column 303, an end column 304, a ball 305 and a clearance groove 306, when in use, first the limiting hole 302 and the limiting column 303 are used in combination, so that the two rotating disks 301 can be fixed on the inner top and inner bottom of the mounting cavity 2 respectively, and then the ball 305 is arranged on the rotating disk 301, because the cross-sectional area of ​​the clearance groove 306 on the end column 304 is larger than the cross-sectional area of ​​the ball 305, the end column 304 can float axially in the mounting cavity 2.

[0034] refer to Figure 3 The tool rod mechanism 4 includes a mounting groove 401, a tool rod 402, a mounting seat 403 and a cutter head 404. The mounting groove 401 is arranged in the end column 304, the tool rod 402 is threadedly connected to the inside of the mounting groove 401, the mounting seat 403 is arranged at one end of the tool rod 402, and the cutter head 404 is arranged on the mounting seat 403. The cross section of the cutter head 404 is trapezoidal. By setting the mounting groove 401, the tool rod 402, the mounting seat 403 and the cutter head 404, when in use, the mounting groove 401 is first opened in the end column 304. Since the tool rod 402 is threadedly connected to the mounting groove 401, the tool rod 402 can be fixed in the mounting groove 401, and then the mounting seat 403 can install the cutter head 404. The cutter head 404 with a trapezoidal cross section can better perform reaming.

[0035] refer to Figure 3A spring groove 5 is provided above the mounting cavity 2, a spring 6 is provided inside the spring groove 5, a connecting ball 7 is provided at one end of the spring 6, the connecting ball 7 is fixedly connected to the end column 304, and a movable part 8 is provided at the lower end of the spring groove 5. By setting the spring groove 5, the spring 6, the connecting ball 7 and the movable part 8, when the end column 304 floats axially in the mounting cavity 2, the spring 6 can be driven to deform through the connecting ball 7. When the knife rod 402 stops jumping, the spring 6 restores the deformation and can return the end column 304 to the normal state, which is convenient for floating again. The spring groove 5 can install the spring 6, and then the movable part 8 can provide space for the movement of the connecting ball 7.

[0036] refer to Figure 3 A fixing sleeve 9 is provided at the lower end of the end column 304, a bolt 10 is provided on the fixing sleeve 9, the bolt 10 passes through the fixing sleeve 9 and the knife rod 402, and a locking sleeve 11 is provided on the bolt 10. By setting the fixing sleeve 9, the bolt 10 and the locking sleeve 11, when in use, the fixing sleeve 9 is firstly provided at the lower end of the end column 304, and then the bolt 10 can pass through the fixing sleeve 9 and the knife rod 402, and then the bolt 10 is locked by the locking sleeve 11, and at this time the knife rod 402 can be further fixed in the fixing sleeve 9.

[0037] refer to Figure 3 A limiting groove 12 is arranged below the mounting cavity 2, and a limiting sleeve 13 is arranged on the end column 304. The limiting sleeve 13 is located in the limiting groove 12. The lateral space of the limiting groove 12 is larger than the limiting sleeve 13. The cross-sections of the limiting groove 12 and the limiting sleeve 13 are both T-shaped. By setting the limiting groove 12 and the limiting sleeve 13, when in use, the limiting sleeve 13 and the limiting groove 12 are used in coordination to further limit the end column 304, and can better fix the end column 304 in the mounting cavity 2.

[0038] refer to Figure 1 A frosted layer 14 for grinding the inner wall of the reaming hole is provided on the mounting seat 403. By providing the frosted layer 14, the aesthetics of the mounting seat 403 can be increased and the mounting seat 403 can be prevented from being damaged.

[0039] refer to Figure 1 The handle 1 is provided with an anti-skid coating 15 for increasing friction. By providing the anti-skid coating 15, when in use, the anti-skid coating 15 can increase the friction between the staff and the handle 1, which can facilitate the staff to pick up the handle 1.

[0040] Brief description of the use process: When in use, first, the limiting hole 302 and the limiting column 303 are used in combination to fix the two rotating disks 301 on the inner top and inner bottom of the installation cavity 2 respectively, and then the ball 305 is set on the rotating disk 301. Since the cross-sectional area of ​​the yield groove 306 on the end column 304 is larger than the cross-sectional area of ​​the ball 305, the end column 304 can float axially in the installation cavity 2. Then the installation groove 401 is opened in the end column 304. Since the tool rod 402 is connected to the installation groove 401 through a threaded connection, the tool rod 402 can be fixed in the installation groove 401. Then the mounting seat 403 can install the tool head 404, and the cross-sectional area The cutter head 404 with a trapezoidal surface can better perform reaming, and then when the end column 304 floats axially in the installation cavity 2, the spring 6 can be driven to deform through the connecting ball 7. When the knife rod 402 stops jumping, the spring 6 recovers its deformation and can return the end column 304 to the right position to facilitate floating again. The spring groove 5 can install the spring 6, and then the movable part 8 can provide space for the movement of the connecting ball 7. Then the fixed sleeve 9 is set at the lower end of the end column 304, and then the bolt 10 can pass through the fixed sleeve 9 and the knife rod 402, and then the bolt 10 can be locked by the locking sleeve 11. At this time, the knife rod 402 can be further fixed in the fixed sleeve 9.

[0041] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A floating reamer, comprising a handle (1), characterized in that: The handle (1) is provided with a mounting cavity (2) inside, the mounting cavity (2) is provided with a floating mechanism (3) inside, and the floating mechanism (3) is provided with a knife rod mechanism (4) inside; The floating mechanism (3) comprises a rotating disk (301), a limiting hole (302), a limiting column (303), an end column (304), a ball (305) and a clearance groove (306); the rotating disk (301) is arranged inside the installation cavity (2); there are two rotating disks (301) and they are arranged at the upper bottom and the lower bottom of the installation cavity (2), respectively; the limiting hole (302) is arranged on the rotating disk (301) and passes through the rotating disk (301); there are four limiting holes (302) and they are arranged circumferentially. One end of the limiting column (303) is arranged on the inner wall of the installation cavity (2) and is located in the limiting hole (302); the end column (304) is arranged between the two rotating disks (301); the ball (305) is arranged on the rotating disk (301); the number of the ball (305) is multiple and arranged in a circle; the clearance groove (306) is arranged on the end column (304); the clearance groove (306) is arranged corresponding to the ball (305); and the diameter of the clearance groove (306) is greater than the diameter of the ball (305).

2. A floating reamer according to claim 1, characterized in that: The knife bar mechanism (4) comprises a mounting groove (401), a knife bar (402), a mounting seat (403) and a knife head (404); the mounting groove (401) is arranged in the end column (304); the knife bar (402) is threadedly connected to the inside of the mounting groove (401); the mounting seat (403) is arranged at one end of the knife bar (402); the knife head (404) is arranged on the mounting seat (403); and the cross section of the knife head (404) is trapezoidal.

3. A floating reamer according to claim 1, characterized in that: A spring groove (5) is provided above the mounting cavity (2), a spring (6) is provided inside the spring groove (5), a connecting ball (7) is provided at one end of the spring (6), the connecting ball (7) is fixedly connected to the end column (304), and a movable part (8) is provided at the lower end of the spring groove (5).

4. A floating reamer according to claim 2, characterized in that: A fixing sleeve (9) is provided at the lower end of the end column (304), a bolt (10) is provided on the fixing sleeve (9), the bolt (10) passes through the fixing sleeve (9) and the knife rod (402), and a locking sleeve (11) is provided on the bolt (10).

5. The floating reamer according to claim 1, characterized in that: A limiting groove (12) is arranged below the installation cavity (2), a limiting sleeve (13) is arranged on the end column (304), the limiting sleeve (13) is located in the limiting groove (12), the lateral space of the limiting groove (12) is larger than the limiting sleeve (13), and the cross-sections of the limiting groove (12) and the limiting sleeve (13) are both T-shaped.

6. A floating reamer according to claim 2, characterized in that: The mounting seat (403) is provided with a frosted layer (14) for grinding the inner wall of the reaming hole.

7. The floating reamer according to claim 1, characterized in that: The knife handle (1) is provided with an anti-slip coating (15) for increasing friction.

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