Combined reamer

Abstract

The utility model discloses a combined reamer, which belongs to the field of reamers and comprises a handheld component, a clamping component is mounted at the bottom end of the handheld component, a reamer head is mounted at the bottom end of the clamping component, the clamping component comprises a shell, a positioning ring is mounted in the shell, and a positioning hole is formed in the positioning ring. The bottom end of the positioning ring is in sliding connection with a plurality of sliding blocks which are arranged at equal intervals, the bottom ends of the sliding blocks are fixedly connected with clamping blocks, the clamping blocks are matched with the reamer head, the inner ends of the clamping blocks are fixedly connected with protruding blocks, and a groove matched with the protruding blocks is formed in the middle of the reamer head. The adjusting ring drives the sliding block to slide on the positioning ring through the sliding rod, when the sliding block slides towards the outer side, the clamping block is driven to be opened, the reamer head is inserted into the middle of the clamping block, the protruding block at the inner end of the clamping block is aligned with the groove in the middle of the reamer head, then the cross torsion head is rotated reversely, the sliding block slides towards the inner side, and the clamping block clamps the reamer head.

Description

Technical Field

[0001] The utility model relates to the field of reamers, and more particularly to a combined reamer. Background Art

[0002] A reamer is a tool used for finishing existing holes. It is primarily used to improve the dimensional accuracy and surface finish of holes, achieving higher requirements for form and position tolerances such as cylindricity and straightness. It has a small cutting volume and can evenly remove the excess material from the hole wall after drilling and reaming to obtain a precise hole diameter. A reamer generally consists of a working part, a neck, and a shank. The working part includes a cutting section and a calibrating section. The cutting section performs the primary cutting work, while the calibrating section primarily calibrates the hole diameter and smoothes the hole wall. Its diameter is roughly equal to the reamed hole size and has a slight back taper to reduce friction between the reamer and the hole wall. The neck is the connecting portion between the working part and the shank and is usually relatively thin, primarily for ease of manufacturing and to prevent interference with the machined surface during use. The shank is used to clamp the reamer and is commonly available in straight and tapered shanks. Straight shank reamers are generally used for smaller reamers and are clamped in a drill chuck. Tapered shank reamers are primarily used for larger reamers and can be inserted directly into the tapered hole of the machine tool spindle or clamped using an adapter sleeve.

[0003] Chinese patent application number: CN202420300297.2 provides a reamer that is easy to remove chips. When processing the inner wall of the hole, this solution cuts off the chips cut by the cutting edge of the tooth and moves along the bottom wall of the chip guide groove toward the axis of the tool rod. During this process, the chips can contact the inner wall of the chip guide groove on the side close to the axis of the tool rod and move along the corresponding inner wall toward the other tooth, so that the chips can automatically move to the outside of the area surrounded by the corresponding two teeth, thereby reducing the possibility of the chips moving to the intersection of the two adjacent teeth and making it difficult to remove the chips, thereby facilitating the rapid dissipation of heat from the teeth. However, after long-term use, the blade of the reamer may wear out. In order not to affect the work, the entire reamer is generally replaced, and the replacement cost is relatively high.

[0004] Therefore, a combined reamer is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the purpose of the utility model is to provide a combined reamer, which clamps or releases the reamer head by opening and closing the clamping block. The user controls the opening and closing of the clamping block to facilitate the replacement of the reamer head. After the reamer head is worn, there is no need to replace the entire reamer, thereby reducing replacement costs.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A combined reamer comprises a handheld assembly, a clamping assembly being mounted at the bottom end of the handheld assembly, a reamer bit being mounted at the bottom end of the clamping assembly, the clamping assembly comprising a housing, a positioning ring being mounted inside the housing, a plurality of sliders being slidably connected to the bottom end of the positioning ring and being equidistantly arranged, a clamping block being fixedly connected to the bottom end of the slider, the clamping block being adapted to the reamer bit, a protrusion being fixedly connected to the inner end of the clamping block, and a groove being adapted to the protrusion being provided in the middle portion of the reamer bit;

[0008] The clamping block can stably clamp the reamer bit, and the cooperation between the protrusion and the groove can prevent the reamer bit from deflecting during use.

[0009] Furthermore, a plurality of connecting posts arranged equidistantly are fixedly connected to the middle of the positioning ring, and one end of the connecting post away from the positioning ring is fixedly connected to the inner wall of the housing;

[0010] The positioning ring is fixed inside the housing through the connecting column to ensure the stability of the positioning ring, thereby providing reliable support for the sliding of the clamping block.

[0011] Furthermore, the top of the positioning ring is rotatably connected to an adjusting ring, the top of the adjusting ring is fixedly connected to a transmission ring, and the top of the transmission ring is fixedly connected to a connecting ring;

[0012] The adjusting ring drives the transmission ring and the connecting ring to rotate together, providing a transmission path for subsequent clamping block adjustment.

[0013] Furthermore, a worm wheel is rotatably connected to the interior of the housing, a worm is meshed with the middle of the worm wheel, and one end of the worm is fixedly connected to a cross torsion head;

[0014] The worm is driven to rotate by rotating the cross-twist head, and then the worm wheel is driven to rotate, thereby achieving adjustment and control of the clamping assembly.

[0015] Furthermore, an opening adapted for a cross-twist head is provided in the middle of the shell;

[0016] The opening facilitates the user to operate the cross twist head to achieve clamping and releasing operations on the reamer bit.

[0017] Furthermore, a sliding rod is fixedly connected to the top of the sliding block, the sliding rod passes through the top of the positioning ring and is slidably connected to the adjustment ring, and the sliding rod is slidably connected to the positioning ring.

[0018] Furthermore, an arc-shaped sliding groove adapted to the sliding rod is provided in the middle of the adjustment ring.

[0019] Furthermore, the handheld assembly includes a handle, a battery is fixedly connected to the interior of the handle, a motor is fixedly connected to the interior of the handle, and the motor is electrically connected to the battery.

[0020] In summary, the present invention has the following beneficial effects:

[0021] (1) This solution clamps or releases the reamer head by opening and closing the clamp block. The user controls the opening and closing of the clamp block to facilitate replacement of the reamer head. When the reamer head is worn, there is no need to replace the entire reamer, thereby reducing replacement costs.

[0022] (2) This solution uses a handheld component to drive the clamping component to rotate, and then drives the reamer head to rotate. Turning the handle can achieve manual operation, and turning on the motor can achieve automatic operation, thereby achieving the purpose of free switching between automatic and manual operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0024] Figure 2 This is a schematic diagram of the overall split structure in this embodiment;

[0025] Figure 3 is a schematic structural diagram of a cutaway handheld assembly in this embodiment;

[0026] Figure 4 is a schematic structural diagram of a cross-section of the clamping assembly in this embodiment;

[0027] Figure 5 Schematic diagram of the internal structure of the clamping assembly in this embodiment;

[0028] Figure 6 It is a schematic structural diagram of the disassembled clamping assembly in this embodiment.

[0029] In the figure, 1. Hand-held component; 2. Clamping component; 3. Reamer head; 101. Handle; 102. Battery; 103. Motor; 201. Housing; 202. Positioning ring; 203. Connecting column; 204. Adjusting ring; 205. Slider; 206. Clamping block; 207. Connecting ring; 208. Transmission ring; 209. Worm; 210. Cross torque head; 211. Worm gear. DETAILED DESCRIPTION

[0030] The present invention will be described in further detail below with reference to the accompanying drawings.

[0031] Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0032] Reference Figures 1-6 As shown, a combined reamer in a preferred embodiment of the present invention includes a handheld component 1, a clamping component 2 is installed at the bottom end of the handheld component 1, a reamer bit is installed at the bottom end of the clamping component 2, the clamping component 2 includes a housing 201, a positioning ring 202 is installed inside the housing 201, a plurality of sliders 205 arranged equidistantly are slidably connected to the bottom end of the positioning ring 202, a clamping block 206 is fixedly connected to the bottom end of the slider 205, the clamping block 206 is adapted to the reamer bit 3, a protrusion is fixedly connected to the inner end of the clamping block 206, and a groove adapted to the protrusion is opened in the middle of the reamer bit 3;

[0033] The clamping block 206 can stably clamp the reamer bit 3, and the cooperation between the protrusion and the groove can prevent the reamer bit 3 from deflecting during use.

[0034] The middle of the positioning ring 202 is fixedly connected to a plurality of connecting posts 203 arranged at equal distances. The end of the connecting post 203 away from the positioning ring 202 is fixedly connected to the inner wall of the housing 201.

[0035] The positioning ring 202 is fixed inside the housing 201 via the connecting column 203 to ensure the stability of the positioning ring 202 , thereby providing reliable support for the sliding of the clamping block 206 .

[0036] The top of the positioning ring 202 is rotatably connected to the adjusting ring 204 , the top of the adjusting ring 204 is fixedly connected to the transmission ring 208 , and the top of the transmission ring 208 is fixedly connected to the connecting ring 207 ;

[0037] The adjusting ring 204 drives the transmission ring 208 and the connecting ring 207 to rotate together, thereby providing a transmission path for subsequent adjustment of the clamping block 206 .

[0038] The housing 201 is internally rotatably connected to a worm gear 211 , a worm 209 is meshed in the middle of the worm gear 211 , and one end of the worm 209 is fixedly connected to a cross-twist head 210 ;

[0039] The worm 209 is driven to rotate by rotating the cross-twist head 210 , and the worm wheel 211 is driven to rotate, thereby achieving adjustment and control of the clamping assembly 2 .

[0040] The middle portion of the housing 201 is provided with an opening adapted to fit the cross-twist 210;

[0041] The opening facilitates the user to operate the cross twist head 210 to achieve clamping and releasing operations on the reamer bit 3 .

[0042] The top of the slider 205 is fixedly connected to a slide rod, which passes through the top of the positioning ring 202 and is slidably connected to the adjustment ring 204. The slide rod is slidably connected to the positioning ring 202.

[0043] The setting of the sliding rod enables the slider 205 to slide stably on the positioning ring 202, and the sliding connection with the adjustment ring 204 can realize the opening and closing adjustment of the clamping block 206.

[0044] The middle of the adjustment ring 204 is provided with an arc-shaped sliding groove adapted to the sliding rod;

[0045] The arc-shaped sliding groove provides a sliding track for the sliding rod, ensuring that the sliding rod can drive the slider 205 and the clamping block 206 to move accordingly when the adjusting ring 204 rotates.

[0046] The handheld assembly 1 includes a handle 101 , a battery 102 is fixedly connected to the interior of the handle 101 , a motor 103 is fixedly connected to the interior of the handle 101 , and the motor 103 is electrically connected to the battery 102 ;

[0047] The motor 103 is powered by the battery 102 and can drive the clamping assembly 2 and the reamer to rotate, thereby realizing automatic operation. At the same time, manual operation can also be realized by rotating the handle 101, thereby achieving the purpose of free switching between automatic and manual operation.

[0048] Specific implementation process: First, when the reamer bit 3 needs to be installed, the user rotates the cross head 210 through the opening in the middle of the shell 201, and the cross head 210 drives the worm 209 to rotate, and the worm 209 drives the worm gear 211 to rotate, and the rotation of the worm gear 211 drives the connecting ring 207, the transmission ring 208 and the adjusting ring 204 connected thereto to rotate, and the arc-shaped slide groove in the middle of the adjusting ring 204 cooperates with the slide rod at the top of the slider 205, so that the slide rod slides in the arc-shaped slide groove, thereby driving the slider 205 to slide on the positioning ring 202, and when the slider 205 slides outward, it drives the clamping block 206 to open, and the reamer bit 3 is inserted into the middle of the clamping block 206, so that the protrusion at the inner end of the clamping block 206 is aligned with the reamer bit 3 The grooves in the middle are aligned, and then the cross twist head 210 is rotated in the opposite direction to make the slider 205 slide inward, and the clamping block 206 clamps the reamer head 3. The protrusion and the groove cooperate to prevent the reamer head 3 from shifting during use. During use, manual or automatic operation can be selected according to actual conditions. If manual operation is selected, the handle 101 can be directly rotated, and the handheld component 1 drives the clamping component 2 to rotate, and then drives the reamer head 3 to rotate. If automatic operation is selected, the motor 103 is turned on, and the motor 103 drives the clamping component 2 and the reamer head 3 to rotate through the handheld component 1. When the reamer head 3 is worn, the above operation can be repeated to replace the reamer head 3. There is no need to replace the entire reamer, which reduces the replacement cost.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A combined reamer, characterized in that: The invention comprises a handheld component (1), a clamping component (2) is installed at the bottom end of the handheld component (1), a reamer head (3) is installed at the bottom end of the clamping component (2), the clamping component (2) comprises a shell (201), a positioning ring (202) is installed inside the shell (201), the bottom end of the positioning ring (202) is slidably connected to a plurality of sliders (205) arranged at equal intervals, the bottom end of the slider (205) is fixedly connected to a clamping block (206), and the clamping block (206) is adapted to the reamer head (3); The inner end of the clamping block (206) is fixedly connected with a protrusion; A groove adapted to the convex block is provided in the middle of the reamer head (3).

2. A combined reamer according to claim 1, characterized in that: A plurality of connecting posts (203) arranged at equal intervals are fixedly connected to the middle of the positioning ring (202), and one end of the connecting post (203) away from the positioning ring (202) is fixedly connected to the inner wall of the housing (201).

3. The combined reamer according to claim 1, characterized in that: The top end of the positioning ring (202) is rotatably connected to an adjusting ring (204), the top end of the adjusting ring (204) is fixedly connected to a transmission ring (208), and the top end of the transmission ring (208) is fixedly connected to a connecting ring (207).

4. The combined reamer according to claim 1, characterized in that: A worm wheel (211) is rotatably connected to the interior of the housing (201), a worm (209) is meshed in the middle of the worm wheel (211), and one end of the worm (209) is fixedly connected to a cross twist head (210).

5. The combined reamer according to claim 4, characterized in that: The middle portion of the housing (201) is provided with an opening adapted to fit the cross twist head (210).

6. The combined reamer according to claim 1, characterized in that: The top end of the slider (205) is fixedly connected to a sliding rod, the sliding rod passes through the top end of the positioning ring (202) and is slidably connected to the adjustment ring (204), and the sliding rod is slidably connected to the positioning ring (202).

7. The combined reamer according to claim 6, characterized in that: The middle portion of the adjustment ring (204) is provided with an arc-shaped sliding groove adapted to the sliding rod.

8. The combined reamer according to claim 1, characterized in that: The handheld assembly (1) comprises a handle (101), a battery (102) is fixedly connected to the interior of the handle (101), a motor (103) is fixedly connected to the interior of the handle (101), and the motor (103) is electrically connected to the battery (102).

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