A quick-change chuck assembly and a manual hydraulic hole expander

Abstract

The present invention belongs to the technical field of reamers, and particularly relates to a quick-change chuck assembly and a manual hydraulic reamer. A quick-change chuck assembly includes a cutting tool, a chuck, a limiting member and a pull rod. The pull rod is sequentially provided with the limiting member, the cutting tool and the chuck. The chuck includes a clamping portion and a hand-held portion. The clamping portion is used for clamping around the circumference of the pull rod by mutual rotation. By restricting and fixing the position of the cutting tool through the chuck, compared with the original structure where the cutting tool has internal threads and is screwed onto the pull rod, the structure of the present invention is more convenient and simple. Only need to place the cutting tool on the pull rod, and then clamp the cutting tool on the pull rod through the chuck and the chuck abuts against the cutting tool. It can be seen that the operation is very convenient, the work efficiency can be improved, and the structure is stable.

Description

Technical Field

[0001] The present invention belongs to the technical field of reamers, and particularly relates to a quick-change chuck assembly and a manual hydraulic reamer. Background Art

[0002] A reamer is a commonly used instrument at present, which is used to enlarge the area of a hole, that is, the size of the hole that one wants can be obtained according to one's own needs. At the same time, there are various types of reamers, and generally an internally threaded tool is used. The tool is placed on the pull rod through the thread, and then driven by a driving structure to form a reamed hole. However, it is necessary to screw them in one by one through the thread, which will cause problems of inconvenient operation and low work efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a quick-change chuck assembly and a manual hydraulic reamer, which solve the problems of inconvenient operation and low work efficiency by restricting and fixing the position of the tool through the chuck.

[0004] The purpose of the present invention is achieved as follows:

[0005] A quick-change chuck assembly includes a tool, a chuck, a limiting member, and a pull rod. The pull rod is sequentially provided with the limiting member, the tool, and the chuck. The chuck includes a clamping portion and a hand-held portion, and the clamping portion is used for clamping around the circumference of the pull rod by rotating relative to each other.

[0006] On the basis of the above solution, further improved or preferred solutions further include:

[0007] Preferably, a shaft is arranged between the hand-held portions, a torsion spring is sleeved outside the shaft, a groove is formed inside the hand-held portion, and both ends of the torsion spring abut against the groove.

[0008] Preferably, a convex portion is arranged on the clamping portion, and a concave portion is formed on the pull rod corresponding to the convex portion, and the convex portion is clamped in the concave portion.

[0009] Preferably, the convex portion is formed into a first serration, the concave portion is formed into a second serration, and the first serration and the second serration are mutually adapted.

[0010] Preferably, connecting rods are arranged on both sides of the hand-held portion, and a fixing member sequentially passes through the connecting rods and the hand-held portion so that the clamping portion rotates around the fixing member.

[0011] Preferably, a retaining ring is arranged between the fixing member and the connecting rod. An opening is formed at the bottom of the retaining ring, and the retaining ring is sleeved outside the fixing member through the opening; a plurality of convex platforms are arranged on the retaining ring, and the top ends of the convex platforms abut against the fixing member.

[0012] Preferably, the hand-held portion is provided with a convex angle, and rounded corners are formed on both sides of the convex angle of the hand-held portion.

[0013] Preferably, at least two tool tips are formed on the tool.

[0014] Preferably, a first chamfer is formed between the bottoms of the clamping portions, and a second chamfer corresponding to the first chamfer is formed on the top of the tool.

[0015] A manual hydraulic reamer includes the above-mentioned quick-change chuck assembly, and further includes a main body, on which a movable handle, a fixed handle, a hydraulic cylinder and the quick-change chuck assembly are arranged, and the movable handle is rotatably arranged on the fixed handle; the pull rod is arranged on the hydraulic cylinder, and the limiting member is arranged between the tool and the hydraulic cylinder.

[0016] The prominent and beneficial technical effects of the present invention compared with the prior art are:

[0017] The present invention restricts and fixes the position of the tool through the chuck. Compared with the original tool with internal threads screwed onto the pull rod, the structure of the present invention is more convenient and simple. It only needs to place the tool on the pull rod, and then clamp it on the pull rod through the chuck and the chuck abuts against the tool. It can be seen that the operation is very convenient and can improve work efficiency, and the structure is stable. Description of the Drawings

[0018] Figure 1 is a structural schematic diagram of the present invention;

[0019] Figure 2 is a structural schematic diagram of the driving mechanism removed;

[0020] Figure 3 is one of the sectional structural schematic diagrams of the driving mechanism removed;

[0021] Figure 4 is Figure 3 an enlarged structural part diagram of A in;

[0022] Figure 5 is another sectional structural schematic diagram of the driving mechanism removed;

[0023] Figure 6 is a disassembled structural schematic diagram of the fixture;

[0024] Figure 7 is a structural schematic diagram of the tool;

[0025] Figure 8 is a structural schematic diagram of the retaining ring.

[0026] In the figure: 1 - tool; 2 - chuck; 3 - limiting member; 4 - pull rod; 5 - clamping portion;

[0027] 6 - hand-held portion; 7 - shaft; 8 - torsion spring; 9 - groove; 10 - first serration; 11 - second serration;

[0028] 12 - connecting rod; 13 - fixing part; 14 - retaining ring; 15 - opening; 16 - boss; 17 - convex angle;

[0029] 18 - tool tip; 19 - first chamfer; 20 - second chamfer; 21 - main body; 22 - movable handle;

[0030] 23 - fixed handle; 24 - hydraulic cylinder. Detailed implementation mode

[0031] Embodiment 1:

[0032] As Figure 2 is known, a quick-change chuck assembly includes a tool 1, a chuck 2, a limiting member 3 and a pull rod 4. Among them, the limiting member 3, the tool 1 and the chuck 2 are sequentially arranged on the pull rod 4. The sheet material to be reamed is placed between the tool 1 and the limiting member 3 to play a role in fixing both sides and stabilizing the sheet material.

[0033] At the same time, the chuck 2 includes a clamping portion 5 and a hand-held portion 6. Among them, the clamping portion 5 is used for clamping around the circumference of the pull rod 4 by mutual rotation, and the bottom end of the chuck 2 abuts against the top end of the tool 1 to play a role in restricting and fixing the position of the tool.

[0034] Compared with the original tool 1 with an internal thread and screwed onto the pull rod 4, the structure of the present invention is more convenient and simple. Only need to place the tool 1 on the pull rod 4, and then clamp the tool 1 on the pull rod 4 through the chuck 2 and the chuck 2 abuts against the tool 1. It can be seen that the operation is very convenient and can improve work efficiency, and the structure is stable.

[0035] Combined with Figure 3 and Figure 4 it can be known that a convex portion is provided on the clamping portion 5. At the same time, the pull rod 4 is provided with a concave portion corresponding to the convex portion, and the convex portion is clamped in the concave portion, so that the chuck 2 can be more firmly clamped on the pull rod 4. In the actual use process, the required functions are realized by a simple structure, which can ensure the stability of the structure and convenient processing, and is also convenient to use.

[0036] Specifically, Figure 4 it can be known that one specific connection method is: a first serration 10 is formed on the clamping portion 5, and at the same time, a second serration 11 is formed on the pull rod 4. Through the mutual adaptation between the first serration 10 and the second serration 11, the friction is increased, so that the chuck 2 can be more firmly clamped on the pull rod 4. In the actual use process, the required functions are realized by a simple structure. For example, the first serration 10 and the second serration 11 are mutually adapted, which can ensure the stability of the structure and convenient processing, and is also convenient to use.

[0037] Combined with Figure 3 , Figure 5 and Figure 6It can be seen that a shaft 7 is arranged between the handheld parts 6, a torsion spring 8 is sleeved outside the shaft 7, a groove 9 is formed inside the handheld part 6, and both ends of the torsion spring 8 abut against the groove 9. During actual use, when the clamping part 5 does not clamp the pull rod 4, both ends of the torsion spring 8 abut against the groove 9 and are in a relaxed state; when the user uses it, by squeezing the top of the handheld part 6 inward, the torsion spring 10 is in a compressed state; when the clamping part 5 clamps the pull rod 4, the clamping part 5 is squeezed inward due to the elastic force of the torsion spring 10, so as to firmly clamp on the pull rod 4. At the same time, the friction can be increased through the mutual adaptation between the first serrations 10 and the second serrations 11, and the contact between the two is closer and the connection is more stable.

[0038] Combined with Figure 2 and Figure 6 It can be seen that connecting rods 12 are arranged on both sides of the handheld part 6, and the fixing part 13 sequentially passes through the connecting rod and the handheld part 6, so that the clamping part 5 rotates around the fixing part 13.

[0039] The specific connection method is as follows: First, connecting rods 12 are arranged on both sides of the handheld part 6, and then the fixing part 13 passes through the connecting rod 12 and the handheld part 6, so as to realize the connection between the handheld parts 6, and the clamping part 5 can rotate around the fixing part 13. During actual use, the required functions are realized by a simple structure, which can ensure the stability of the structure, is convenient for processing, and is convenient for use.

[0040] At the same time, a retaining ring 14 is arranged between the fixing part 13 and the connecting rod 12. During actual use, the retaining ring 14 is arranged between the fixing part 13 and the connecting rod 12, and the connection between the fixing part 13 and the connecting rod 12 is stabilized through the retaining ring 14. The required functions are realized by a simple structure, which can ensure the stability of the structure, is convenient for processing, and is convenient for use.

[0041] As Figure 8 shown, a form of the retaining ring 14 is shown, in which an opening 15 is formed at the bottom of the retaining ring 14, and the retaining ring 14 is sleeved outside the fixing part 13 through the opening 15. Moreover, a plurality of protrusions 16 are arranged on the retaining ring 14, and the top ends of the protrusions 16 abut against the fixing part 13. During actual use, the retaining ring 14 is arranged between the fixing part 13 and the connecting rod 12, the retaining ring 14 is sleeved outside the fixing part 13 through the opening 15, and the top ends of the protrusions 16 abut against the fixing part 13, so as to stabilize the connection between the fixing part 13 and the connecting rod 12. The required functions are realized by a simple structure, which can ensure the stability of the structure, is convenient for processing, and is convenient for use.

[0042] Combined with Figure 3 and Figure 5It can be seen that the handheld part 6 is provided with a convex corner 17, and rounded corners are formed on both sides of the convex corner 17 of the handheld part 6, so that the shape of the handheld part 6 is suitable for human hands to hold, bringing comfort and convenience to people. During the actual use process, the required functions are realized by a simple structure, which can ensure the stability of the structure and is convenient for processing, and at the same time is convenient and comfortable to use.

[0043] Combined with Figure 2 and Figure 7 It can be seen that at least two tool tips 18 are formed on the tool 1. Just as two points determine a straight line and three points determine a plane, so at least two tool tips 18 are formed on the tool 1, which can better expand the hole, and while making the structure more stable, the efficiency of hole expansion is increased. During the actual use process, the required functions are realized by a simple structure, which can ensure the stability of the structure while improving the work efficiency.

[0044] Combined with Figure 3 and Figure 5 It can be seen that specifically looking at Figure 4 , it can be seen that a chamfer 19 is formed between the bottoms of the clamping parts 5, and a chamfer 20 corresponding to the chamfer 19 is formed at the top of the tool 1, so that the contact between the clamping part 5 and the tool 1 is more fitting and stable. At the same time, during the actual use process, the required functions are realized by a simple structure, which can ensure the stability of the structure and is convenient for processing.

[0045] The specific working process of this solution is as follows:

[0046] The tool 1 is symmetrically clamped on both sides of the pull rod 4 through the clamping part 5, and the bottom end of the chuck 2 abuts against the top end of the tool 1, so as to limit and fix the position of the tool. Compared with the original tool 1 with internal threads and screwed onto the pull rod 4, the structure of the present invention is more convenient and simple. Only need to place the tool 1 on the pull rod 4, then clamp the pull rod 4 through the chuck 2 and the chuck 2 abuts against the tool 1. It can be seen that the operation is very convenient and can improve the work efficiency, and the structure is stable.

[0047] Embodiment 2:

[0048] As Figure 1 shown, a manual hydraulic hole expander includes a main body 21, on which an activity handle 22, a fixed handle 23, a hydraulic cylinder 24 and the above-mentioned quick-change chuck assembly are arranged, and the activity handle 22 is rotatably arranged on the fixed handle 23. At the same time, the pull rod 4 is arranged on the hydraulic cylinder 24, and the limiting member 3 is arranged between the tool 1 and the hydraulic cylinder 24.

[0049] In the actual use process, first place the sheet material between the cutting tool 1 and the limiting member 3, then the quick-change chuck assembly clamps on the pull rod 4. By the user pressing the movable handle 22, and then through the hydraulic cylinder 24, the smaller force applied by the user is transformed into a larger force, so as to drive the pull rod 4 to realize the reaming of the cutting tool 1. The required functions are realized by a simple structure, which can ensure the stability of the structure and is convenient for processing and use at the same time.

[0050] At the same time, the hydraulic cylinder 24 is a hydraulic actuator that converts hydraulic energy into mechanical energy and makes linear reciprocating motion or oscillating motion. It has a simple structure and reliable operation. Moreover, when using it to achieve reciprocating motion, the deceleration device can be omitted, and there is no transmission gap, and the motion is stable.

[0051] The specific working process of this solution is as follows:

[0052] First place the sheet material between the cutting tool 1 and the limiting member 3, then the quick-change chuck assembly clamps on the pull rod 4. By the user pressing the movable handle 22, and then through the hydraulic cylinder 24, the smaller force applied by the user is transformed into a larger force, so as to drive the pull rod 4 to realize the reaming of the cutting tool 1. The required functions are realized by a simple structure, which can ensure the stability of the structure and is convenient for processing and use at the same time.

[0053] The above embodiments are only the preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A quick-change chuck assembly, characterized in that: It includes a cutting tool (1), a chuck (2), a limiting member (3) and a drawbar (4). The drawbar (4) is sequentially provided with the limiting member (3), the cutting tool (1) and the chuck (2). The chuck (2) is clamped on the drawbar (4) and the chuck (2) abuts against the cutting tool (1). The chuck (2) includes a clamping portion (5) and a hand-held portion (6). The clamping portion (5) is used for clamping around the circumference of the drawbar (4) by mutual rotation; An axis (7) is arranged between the hand-held portions (6). A torsion spring (8) is sleeved outside the axis (7). A convex portion is arranged on the clamping portion (5). The drawbar (4) is provided with a concave portion corresponding to the convex portion. The convex portion is clamped in the concave portion; Link rods (12) are arranged on both sides of the hand-held portion (6). A fixing member (13) sequentially passes through the link rod and the hand-held portion (6) to enable the clamping portion (5) to rotate around the fixing member (13); A retaining ring (14) is arranged between the fixing member (13) and the link rod (12). An opening (15) is formed at the bottom of the retaining ring (14). The retaining ring (14) is sleeved outside the fixing member (13) through the opening (15). A plurality of bosses (16) are arranged on the retaining ring (14). The top ends of the bosses (16) abut against the fixing member (13).

2. The quick-change chuck assembly according to claim 1, wherein: A groove (9) is formed inside the hand-held portion (6). Both ends of the torsion spring (8) abut against the groove (9).

3. The quick-change chuck assembly according to claim 1, wherein: The convex portion is formed into a first sawtooth (10), and the concave portion is formed into a second sawtooth (11). The first sawtooth (10) and the second sawtooth (11) are mutually adapted.

4. The quick-change chuck assembly according to claim 1, wherein: The hand-held portion (6) is provided with a convex angle (17). Rounded corners are formed on both sides of the convex angle (17) of the hand-held portion (6).

5. The quick-change chuck assembly according to claim 1, wherein: The cutting tool (1) is formed with at least two cutting tips (18).

6. The quick-change chuck assembly according to claim 1, wherein: A first chamfer (19) is formed between the bottoms of the clamping portions (5). A second chamfer (20) is formed on the top of the cutting tool (1) corresponding to the first chamfer (19).

7. A manual hydraulic hole expander, characterized in that: It includes the quick-change chuck assembly according to any one of claims 1-6, and further includes a main body (21). An operating handle (22), a fixed handle (23), a hydraulic cylinder (24) and the quick-change chuck assembly are arranged on the main body (21). The operating handle (22) is rotatably arranged on the fixed handle (23); the drawbar (4) is arranged on the hydraulic cylinder (24), and the limiting member (3) is arranged between the cutting tool (1) and the hydraulic cylinder (24).

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