Multifunctional composite spot facing drill
By adding a limiting guide and a connecting shank to the countersink drill, the problems of insufficient hole diameter accuracy and difficulty in depth control in deep hole machining of traditional countersink drills are solved, realizing the ability to perform high-precision deep hole machining and machining in space-constrained areas.
Patent Information
- Application Number
- CN202520317833.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Traditional countersinking drills lack guide rods, resulting in insufficient hole diameter accuracy during deep hole machining. They cannot be used in conjunction with elbow air drills, and the machining depth cannot be controlled.
A multifunctional composite countersink drill is designed, which adds a limiting guide and a connecting shank. The limiting guide is arranged axially at the front end of the countersink drill body and is connected to the countersink drill body through a guide rod or threaded connection. Combined with a depth limiting sleeve and a spring, it realizes guidance and depth control.
It improves the diameter accuracy of deep hole machining, enables machining in confined spaces using a bent air drill, and precisely controls the depth of blind holes.
Smart Images
Figure CN223819701U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a countersinking flat drill, and more particularly to a multifunctional composite countersinking flat drill, belonging to the field of metal processing tool design and manufacturing technology. Background Technology
[0002] A countersink drill is a tool specifically designed for machining the end face of holes. Its main function is to create a flat surface at the end of a hole, and it is widely used in machinery manufacturing, automotive manufacturing, aerospace, and other fields. Traditional countersink drills are only used for countersinking protruding connector heads or nut heads, and cannot guide the drill bit to perform deep blind hole machining at the end of the hole. In addition, traditional countersink drills have straight shanks, which cannot be used with bent air drills. When the machining space is confined, it is impossible to create holes in an enclosed environment by using them with bent air drills. Furthermore, traditional countersink drills cannot perform depth-limited countersinking operations, and they cannot precisely control the machining depth.
[0003] A face countersink drill mainly consists of two parts: a cutting edge and a shank. It is used to machine the protruding portion of a connector to be flush with the workpiece surface, or to machine a circular concave surface on the workpiece surface. Existing face countersink drills have the following disadvantages:
[0004] 1) The lack of guide rods makes it impossible to guarantee the required hole diameter accuracy when machining deep holes;
[0005] 2) Straight shank tool holders cannot be matched with bent air drills, and cannot be used for machining in closed areas;
[0006] 3) Straight shank tool holders cannot restrict machining, nor can they control the depth of hole machining. Utility Model Content
[0007] The technical problem to be solved by this utility model is to provide a multifunctional composite countersinking drill that can effectively improve the machining accuracy of the end face of the hole during deep hole machining.
[0008] The technical solution adopted to solve the above-mentioned technical problems is: a multi-functional composite countersink drill, including a countersink drill body, the multi-functional composite countersink drill also includes at least a limiting guide, the limiting guide is arranged coaxially with the countersink drill body at the front end of the countersink drill body along the axial direction; during the countersinking process of deep hole end face, the countersink drill body is limited and guided by the limiting guide inserted into the hole.
[0009] Furthermore, the limiting guide is composed of a guide rod, which is integrally formed at the front end of the countersink body.
[0010] The preferred embodiment of the above scheme is that the limiting guide is composed of a guide rod, and a threaded hole is provided at the front end of the countersink body. The guide rod is coaxially and detachably arranged at the front end of the countersink body through the threaded hole in a threaded connection manner.
[0011] Furthermore, the multifunctional composite countersink drill also includes a connecting shank, which is a tapered shank, and the countersink drill body is connected to the drill press through the tapered shank.
[0012] The preferred embodiment of the above scheme is that the multifunctional composite countersink drill further includes a connecting shank and a depth limiting sleeve. The connecting shank is a threaded straight shank, and the countersink drill body is connected to the elbow air drill through the threaded straight shank in cooperation with the depth limiting sleeve.
[0013] Furthermore, the depth-limiting sleeve includes a sleeve, a spring, and a mounting rod. A threaded hole is provided at the front end of the mounting rod, and a connector is provided at the rear end of the mounting rod. A mounting groove extending along the circumference is provided on the outer side of the front end of the mounting rod. The countersink body is connected to the front of the mounting rod through the threaded hole with the cooperation of the threaded straight shank. The mounting rod is connected to the elbow air drill through its connector. The sleeve is installed on the outer side of the mounting groove by the spring. During the countersinking process of the hole end face, the countersinking depth of the countersink body to the hole end face is determined by the sleeve with the cooperation of the spring.
[0014] The beneficial effects of this utility model are as follows: The technical solution provided in this application is based on the existing countersink drill body, by adding a limiting guide component, which is arranged coaxially with the countersink drill body at its front end. During the countersinking process of deep holes, the countersink drill body is limited and guided by the limiting guide component inserted into the hole. In this way, the machining accuracy of the deep hole diameter end face can be effectively guaranteed during the countersinking process. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of the multifunctional composite countersinking drill of this utility model;
[0016] Figure 2 This is a cross-sectional view of the connection between the countersink body and the depth-limiting sleeve involved in the multifunctional composite countersink of this utility model.
[0017] The components in the diagram are labeled as follows: 1. Countersinking drill body; 2. Limiting guide; 3. Connecting handle; 4. Sleeve; 5. Spring; 6. Mounting rod; 7. Connecting head; 8. Mounting groove. Detailed Implementation
[0018] like Figure 1 , Figure 2This invention illustrates a multifunctional composite countersinking drill that effectively improves the machining accuracy of deep holes. The multifunctional composite countersinking drill includes a drill body 1 and at least a limiting guide 2. The limiting guide 2 is arranged axially and coaxially with the drill body 1 at its front end. During deep hole countersinking, the drill body 1 is limited and guided by the limiting guide 2 inserted into the hole. The technical solution provided in this application is based on the existing countersinking drill, i.e., the drill body itself. By adding a limiting guide and arranging it axially and coaxially with the drill body at its front end, the drill body is limited and guided during deep hole countersinking. This effectively ensures the machining accuracy of the deep hole diameter end face during deep hole countersinking.
[0019] Accordingly, in order to facilitate the production and use of the multifunctional composite countersinking drill of this application, the limiting guide 2 of this application is composed of a guide rod. The guide rod can be integrally formed on the front end of the countersinking drill body, or a threaded hole can be provided on the front end of the countersinking drill body 1, and then the guide rod can be coaxially and detachably arranged on the front end of the countersinking drill body 1 through the threaded hole in a threaded connection manner.
[0020] In light of existing technology, to facilitate connection with existing drilling equipment, the multifunctional composite countersink drill described in this application further includes a connecting shank 3, which is a tapered shank. The countersink drill body 1 is connected to the drilling machine via the tapered shank. Furthermore, to enable the multifunctional composite countersink drill of this application to adapt to different drilling equipment, especially suitable for countersinking deep hole faces in confined spaces, the multifunctional composite countersink drill described in this application also includes a connecting shank 3 and a depth-limiting sleeve. The connecting shank 3 is a threaded straight shank, and the countersink drill body 1 is connected to the elbow air drill via the threaded straight shank and the depth-limiting sleeve. More specifically, the depth-limiting sleeve of this application includes a sleeve 4, a spring 5, and a mounting rod 6. A threaded hole is provided at the front end of the mounting rod 6, and a connector 7 is provided at the rear end of the mounting rod 6. A mounting groove 8 extending along the circumference is provided on the outer side of the front end of the mounting rod. The countersink body 1 is connected to the front of the mounting rod 6 through the threaded hole with the cooperation of the threaded straight shank. The mounting rod 6 is connected to the elbow air drill through its connector 7. The sleeve 4 is installed on the outer side of the mounting groove 8 by the spring 5. During the countersinking process of the hole end face, the countersinking depth of the countersink body 1 to the hole end face is determined by the sleeve 4 with the cooperation of the spring 5.
[0021] In summary, the technical solution provided in this application also has the following advantages:
[0022] 1) It realizes the use of the guide rod of the drill bit head to guide the drill bit for deep hole machining, and ensures that the hole position and diameter meet the accuracy requirements;
[0023] 2) It enables the use of the threaded shank at the end of the drill bit to countersink the end face of a space-constrained area;
[0024] 3) It enables precise control of the depth of the blind hole being machined using the threaded tool holder at the end of the drill bit.
[0025] The technical solution of this application will be further described below through specific embodiments:
[0026] The purpose of this invention is as follows:
[0027] 1) Adding a guide rod can be used to guide the drill bit for deep hole machining and ensure that the hole position and diameter meet the accuracy requirements;
[0028] 2) Use a threaded tool holder in conjunction with an elbow air drill to process areas with limited space; use it in conjunction with a depth limiting sleeve to precisely control the depth of blind hole processing and keep the tool head perpendicular to the workpiece surface to ensure processing quality.
[0029] Example 1
[0030] The complete technical solution provided in this application is as follows:
[0031] 1) This face countersink consists of three parts: a guide rod, a cutting edge, and a shank. Figure 1 As shown;
[0032] 2) The guide rod can be inserted into a hole of a fixed size, guiding the drill bit to move along the hole axis during the feed process, ensuring the accuracy of the hole position and diameter of the machined hole;
[0033] 3) The tool holder is threaded, allowing for use with a bent air drill to machine areas with limited space; it connects to the internal thread on the depth-limiting sleeve, compressing the spring during hole making to precisely control the depth of blind holes and keep the tool tip perpendicular to the workpiece surface, ensuring machining quality. Figure 2 As shown.
Claims
1. A multifunctional composite countersinking drill, comprising a countersinking drill body (1), characterized in that: The multifunctional composite countersink drill also includes at least a limiting guide (2), which is arranged coaxially with the countersink drill body (1) at the front end of the countersink drill body (1) along the axial direction; during the deep hole face countersinking process, the countersink drill body (1) is limited and guided by the limiting guide (2) inserted into the hole.
2. The multifunctional composite countersinking drill according to claim 1, characterized in that: The limiting guide component (2) consists of a guide rod, which is integrally formed at the front end of the countersink body.
3. The multifunctional composite countersinking drill according to claim 1, characterized in that: The limiting guide (2) consists of a guide rod. A threaded hole is provided at the front end of the countersink body (1). The guide rod is coaxially and detachably arranged at the front end of the countersink body (1) through the threaded hole in a threaded connection manner.
4. The multifunctional composite countersinking drill according to claim 1, 2 or 3, characterized in that: The multifunctional composite countersink drill also includes a connecting shank (3), which is a tapered shank. The countersink drill body (1) is connected to the drill press through the tapered shank.
5. The multifunctional composite countersinking drill according to claim 1, 2 or 3, characterized in that: The multifunctional composite countersink drill also includes a connecting shank (3) and a depth limiting sleeve. The connecting shank (3) is a threaded straight shank. The countersink drill body (1) is connected to the elbow air drill through the threaded straight shank and the depth limiting sleeve.
6. The multifunctional composite countersinking drill according to claim 5, characterized in that: The depth-limiting sleeve includes a sleeve (4), a spring (5), and a mounting rod (6). A threaded hole is provided at the front end of the mounting rod (6), and a connector (7) is provided at the rear end of the mounting rod (6). A mounting groove (8) extending along the circumference is provided on the outer side of the front end of the mounting rod. The countersinking drill body (1) is connected to the front of the mounting rod (6) through the threaded hole with the cooperation of the threaded straight shank. The mounting rod (6) is connected to the elbow air drill through its connector (7). The sleeve (4) is installed on the outer side of the mounting groove (8) through the spring (5). During the countersinking process of the hole end face, the countersinking depth of the countersinking drill body (1) on the hole end face is determined by the sleeve (4) with the cooperation of the spring (5).