Steel twist drill holding device

Abstract

This utility model relates to a steel twist drill clamping device, belonging to the field of steel twist drill technology. It includes a positioning connecting seat, an annular mounting seat, and a U-shaped fixing seat. The positioning connecting seat has a mounting hole into which the steel twist drill body is inserted. An extension connecting cylinder is fixedly installed on the inner wall of the positioning connecting seat. The annular mounting seat is rotatably mounted on one end of the extension connecting cylinder. The U-shaped fixing seat is fixed to the inner wall of the annular mounting seat and is evenly distributed circumferentially on the inner wall of the annular mounting seat. A clamping and positioning component for clamping and fixing the steel twist drill body is installed on the U-shaped fixing seat. A lifting indicator head is installed on the clamping and positioning component, with one end of the lifting indicator head corresponding to a scale on the side wall of the U-shaped fixing seat. This utility model can provide stable clamping from multiple directions and accurately control the clamping force and position, preventing tilting of the steel twist drill body, effectively avoiding over-clamping or unstable clamping, and ensuring smooth drilling operations.

Description

Technical Field

[0001] This utility model relates to the field of steel twist drill technology, and in particular to a steel twist drill clamping device. Background Technology

[0002] A steel twist drill is a tool that achieves circular hole machining by rotating and cutting along a relatively fixed axis. Its chip flutes are spiral-shaped, resembling a twisted rope. It is primarily made of high-speed steel, possessing high hardness and wear resistance, and is widely used in drilling various materials such as steel and aluminum. During machining, the steel twist drill must be fixed to the spindle of a drilling machine, milling machine, or other equipment using a clamping device. This ensures the stability of the drill bit's rotation center and prevents deviations in hole diameter or drill bit breakage due to eccentricity.

[0003] Existing steel twist drill clamping devices have several shortcomings: Firstly, their clamping stability is poor, often employing a single direction or simple structure, making the steel twist drill prone to shaking and displacement during drilling, affecting drilling accuracy and leading to problems such as hole diameter deviation and rough hole walls. Secondly, the clamping operation lacks precision; operators find it difficult to accurately control the clamping force and position, relying solely on experience. This can easily result in situations where the clamping is too loose, causing the drill body to rotate unstably, or too tight, damaging the drill body, thus posing certain drawbacks in use. Utility Model Content

[0004] To overcome the technical defects of the existing technology, this utility model provides a steel twist drill clamping device, which can stably clamp from multiple directions, accurately control the force and position, prevent the steel twist from tilting, and ensure smooth drilling operations.

[0005] The technical solution adopted by this utility model is as follows: it includes a positioning connecting seat, an annular mounting seat, and a U-shaped fixing seat. The positioning connecting seat has a mounting hole, into which the steel twist drill body is inserted. The extension connecting cylinder is fixedly installed on the inner wall of the positioning connecting seat. The annular mounting seat is rotatably installed on one end of the extension connecting cylinder. The U-shaped fixing seat is fixed on the inner wall of the annular mounting seat and is evenly distributed circumferentially on the inner wall of the annular mounting seat. The clamping and positioning component for clamping and fixing the steel twist drill body is installed on the U-shaped fixing seat. The lifting indicator head is installed on the clamping and positioning component, and one end of the lifting indicator head corresponds to the scale opened on the side wall of the U-shaped fixing seat.

[0006] Preferably, in order to enable the lifting threaded block to move the blocking clamping block up and down via the L-shaped mounting bracket, the clamping and positioning assembly includes the lifting threaded block slidably engaged in the U-shaped fixed seat, the L-shaped mounting bracket is fixedly installed on the side wall of the lifting threaded block, and the blocking clamping block is fixedly installed at one end of the L-shaped mounting bracket, which is vertically corresponding to the embedding groove opened at one end of the steel twist drill body.

[0007] Preferably, in order to enable the lifting threaded block to move up and down by means of the limiting slide rod, the limiting slide rod is fixedly installed at both ends of the bottom of the lifting threaded block and slidably inserted into the U-shaped fixed seat, and the clamping block is fixedly installed at the bottom end of the limiting slide rod.

[0008] Preferably, in order to control the rotation of the drive threaded rod so that the lifting threaded block can slide up and down inside the U-shaped fixed seat, the drive threaded rod is rotatably installed inside the U-shaped fixed seat. One end of the drive threaded rod is rotatably connected to the U-shaped fixed seat through the rotary joint, and the other end of the drive threaded rod is rotatably inserted into the annular mounting seat. The lifting threaded block is threadedly sleeved on the drive threaded rod.

[0009] Preferably, in order to control the rotation of the drive threaded rod through the screwing head, the screwing head is fixedly installed at one end of the drive threaded rod.

[0010] Preferably, in order to clamp the steel twist drill body from four directions and improve the stability of clamping, there are four blocking clamping blocks and four clamping blocks, which are evenly distributed in a circle inside the annular mounting base and correspond to the four sides of one end of the steel twist drill body.

[0011] Preferably, in order to improve the stability of clamping, both the blocking clamping block and the abutting clamping block are made of rubber.

[0012] Preferably, in order to facilitate the overall installation of the device through the L-shaped connection, the positioning connector is fixedly mounted with the L-shaped connecting frame that is fixedly connected to the machine tool.

[0013] The beneficial effects of this utility model are: the U-shaped fixing base is evenly distributed around the circumference, and with the clamping and positioning components, it can stabilize the clamp from multiple directions; during the clamping and positioning process, the clamping force and position can be accurately controlled by the correspondence between the lifting indicator head and the scale, avoiding the tilting of the steel twist body, effectively avoiding over-clamping or unstable clamping, and ensuring the smooth progress of drilling operations. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the connection structure between the annular mounting base and the extended connecting cylinder of this utility model; Figure 3 This is a schematic diagram of the installation structure of the lifting indicator head of this utility model; Figure 4 This is a schematic diagram of the clamping and positioning component of this utility model; Figure 5This is a schematic diagram of the structure of the steel twist drill body of this utility model.

[0015] Explanation of reference numerals in the attached drawings: 1. Positioning connecting seat; 2. Steel twist drill body; 3. Extension connecting cylinder; 4. Annular mounting seat; 5. U-shaped fixing seat; 6. Clamping and positioning assembly; 601. Lifting threaded block; 602. L-shaped mounting bracket; 603. Barrier clamping block; 604. Limiting slide bar; 605. Clamping block; 606. Drive threaded rod; 607. Rotary joint; 608. Tightening head; 7. Lifting indicator head; 8. L-shaped connecting bracket. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings: like Figures 1-5As shown, this embodiment provides a steel twist drill clamping device, including a positioning connecting seat 1, an annular mounting seat 4, and a U-shaped fixing seat 5. The positioning connecting seat 1 has a mounting hole, into which the steel twist drill body 2 is inserted. An extension connecting cylinder 3 is fixedly installed on the inner wall of the positioning connecting seat 1. The annular mounting seat 4 is rotatably installed at one end of the extension connecting cylinder 3. The U-shaped fixing seat 5 is fixed on the inner wall of the annular mounting seat 4 and is evenly distributed circumferentially on the inner wall of the annular mounting seat 4. A clamping and positioning component 6 for clamping and fixing the steel twist drill body 2 is installed on the U-shaped fixing seat 5. In use, the steel twist drill body 2 is inserted into the mounting hole of the positioning connecting seat 1, and the clamping and positioning component 6 on the U-shaped fixing seat evenly distributed circumferentially on the inner wall of the annular mounting seat 4 clamps and fixes the steel twist drill body 2 from multiple directions to ensure stability. The annular mounting base 4 can rotate relative to the extended connecting cylinder 3. During drilling operations, it rotates with the steel twist drill body 2. It also facilitates adjusting the position of the clamping and positioning component 6 when clamping and fixing one end of the steel twist drill body 2. The clamping and positioning component 6 includes a lifting threaded block 601 that is slidably engaged in the U-shaped fixing base 5. An L-shaped mounting bracket 602 is fixedly installed on the side wall of the lifting threaded block 601. A blocking clamping block 603 that vertically corresponds to the embedded groove opened at one end of the L-shaped mounting bracket 602 is fixedly installed at one end of the L-shaped mounting bracket 602. Limiting slide rods 604 that are slidably inserted into the U-shaped fixing base 5 are fixedly installed at both ends of the bottom of the lifting threaded block 601. A clamping block 6 is fixedly installed at the bottom end of the limiting slide rod 604. 05. A drive threaded rod 606 is rotatably installed inside the U-shaped fixed base 5. One end of the drive threaded rod 606 is rotatably connected to the U-shaped fixed base 5 through a rotating joint 607. The other end of the drive threaded rod 606 is rotatably inserted into the annular mounting base 4. The lifting threaded block 601 is threadedly sleeved on the drive threaded rod 606. A screwing head 608 is fixedly installed at one end of the drive threaded rod 606. There are four blocking clamping blocks 603 and four clamping blocks 605, which are evenly distributed in a circle inside the annular mounting base 4, corresponding to the four sides of one end of the steel twist drill body 2. Both the blocking clamping blocks 603 and the clamping blocks 605 are made of rubber. When using, first insert the steel twist drill body 2 into the positioning connecting seat 1. Next, rotate the screw head 608 at one end of the drive threaded rod 606 on the U-shaped fixed seat. Since the lifting threaded block 601 is threaded onto the drive threaded rod 606 and its rotation is restricted by the limit slide rod 604, the lifting threaded block 601 will drive the L-shaped mounting bracket and the blocking clamping block 603 to move. At the same time, the clamping block 605 at the bottom of the limit slide rod 604 will also move. With rotation, the four circumferentially evenly distributed blocking clamping blocks 603 and clamping blocks 605 will clamp the steel twist drill body 2 from the four sides of one end.The rubber-material blocking clamping block 603 and the abutting clamping block 605 can increase friction, securely clamp the steel twist drill body 2 and prevent damage. At the same time, the cooperation between the blocking clamping block 603 and the embedded groove can prevent the steel twist drill body 2 from moving back and forth, further improving the stability of clamping.

[0017] As a technical optimization solution of this utility model, specifically as follows: Figure 3 As shown, a lifting indicator head 7 is installed on the clamping and positioning assembly 6. One end of the lifting indicator head 7 corresponds to the scale on the side wall of the U-shaped fixed seat 5. An L-shaped connecting frame 8, which is fixedly connected to the machine tool, is fixedly installed on the positioning connecting seat 1. In use, the steel twist drill body 2 is inserted into the positioning connecting seat 1, and the entire device is securely connected to the machine tool through the L-shaped connecting frame 8. Then, the screwing head 608 at one end of the drive threaded rod 606 on the U-shaped fixed seat 5 is rotated. The lifting threaded block 601 then drives the L-shaped mounting frame 602 and the blocking clamping block 603 to move, and the clamping block 605 at the bottom of the limiting slide rod 604 moves to clamp the steel twist drill body 2. During this process, the lifting indicator head 7 on the clamping and positioning assembly 6 is observed. One end of it corresponds to the scale on the side wall of the U-shaped fixed seat 5, which can accurately display the lifting height. According to the scale, the clamping force and position can be precisely controlled to ensure that the four rubber blocking clamping blocks 603 and the clamping clamping block 605 clamp the drill body evenly and firmly, avoid deviation, and improve the stability and accuracy of processing.

[0018] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications may be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A steel twist drill clamping device, characterized in that, include: The positioning connector (1) has an installation hole, into which a steel twist drill body (2) is inserted, and an extension connector (3) is fixedly installed on the inner wall of the positioning connector (1). An annular mounting base (4) is rotatably mounted on one end of the extended connecting cylinder (3); U-shaped fixing seat (5) is fixed on the inner wall of the annular mounting seat (4) and is evenly distributed in a circle on the inner wall of the annular mounting seat (4). A clamping and positioning component (6) for clamping and fixing the steel twist drill body (2) is installed on the U-shaped fixing seat (5). A lifting indicator head (7) is installed on the clamping and positioning component (6). One end of the lifting indicator head (7) corresponds to the scale opened on the side wall of the U-shaped fixing seat (5).

2. The steel twist drill clamping device according to claim 1, characterized in that: The clamping and positioning assembly (6) includes a lifting threaded block (601) that is slidably engaged in the U-shaped fixed seat (5). An L-shaped mounting bracket (602) is fixedly installed on the side wall of the lifting threaded block (601). A blocking clamping block (603) that is vertically corresponding to the embedding groove opened at one end of the steel twist drill body (2) is fixedly installed at one end of the L-shaped mounting bracket (602).

3. The steel twist drill clamping device according to claim 2, characterized in that: The lifting threaded block (601) has a limiting slide rod (604) that is slidably inserted into the U-shaped fixed seat (5) at both ends of its bottom. The limiting slide rod (604) has a clamping block (605) that is fixedly installed at its bottom end.

4. The steel twist drill clamping device according to claim 3, characterized in that: The U-shaped fixed seat (5) is rotatably mounted with a drive threaded rod (606). One end of the drive threaded rod (606) is rotatably connected to the U-shaped fixed seat (5) through a rotating joint (607). The other end of the drive threaded rod (606) is rotatably inserted into the annular mounting seat (4). The lifting threaded block (601) is threadedly sleeved on the drive threaded rod (606).

5. The steel twist drill clamping device according to claim 4, characterized in that: A screwdriver (608) is fixedly installed at one end of the drive threaded rod (606).

6. The steel twist drill clamping device according to claim 5, characterized in that: The number of the blocking clamping block (603) and the clamping clamping block (605) are both four, and they are evenly distributed in a circle inside the annular mounting base (4), respectively corresponding to the four sides of one end of the steel twist drill body (2).

7. The steel twist drill clamping device according to claim 6, characterized in that: Both the blocking clamping block (603) and the clamping clamping block (605) are made of rubber.

8. The steel twist drill clamping device according to claim 1, characterized in that: An L-shaped connecting frame (8) that is fixedly connected to the machine tool is fixedly installed on the positioning connecting seat (1).

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