A spring collet with internal cooling jacket
By introducing a water-sealing sleeve and a water-sealing rubber ring into the spring collet, the problem of water leakage when the internally cooled drill bit is solved, achieving effective chip removal and drill bit stability, and improving processing quality and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HAILA PRECISION MOLD (CHANGCHUN) CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-06-05
AI Technical Summary
When traditional spring collets clamp internally cooled drill bits, the water spray pressure causes water to spray out from the opening of the collet, which cannot effectively remove chips, resulting in a decrease in the quality and efficiency of drill bit processing.
A spring collet with an internal cooling water-sealing sleeve was designed, comprising a water-sealing sleeve and a water-sealing rubber ring. By engaging the inclined guide edge with the guide mating surface, it ensures that water can only flow out from the drill bit's water hole and restricts the drill bit's axial movement, thus guaranteeing the drilling depth.
It effectively prevents water leakage, improves chip removal, reduces the risk of drill bit breakage, and enhances processing quality and efficiency.
Smart Images
Figure CN224322374U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machining, and in particular to a spring collet with an internal cooling water-sealing jacket. Background Technology
[0002] Split-type internally cooled drill bits require a spring collet shank for fixation. However, since internally cooled drill bits need to be connected to a water spray pipe for cooling, the traditional spring collet shank (ER shank) usually uses a slotted clamping sleeve to clamp the internally cooled drill bit. If the internally cooled drill bit is placed in the shank and clamped, the water spray pressure will cause water to spray out from the slot of the shank. This is because the center drill hole of the internally cooled drill bit is small. During the machining process, the pressure of the metal chips in the drill hole often makes it impossible for water to spray from the center drill hole. As a result, the drill bit cannot rely on water pressure to remove chips during machining, which greatly increases the probability of chip breakage and reduces machining quality and efficiency. Utility Model Content
[0003] In view of the above problems, the purpose of this utility model is to provide a spring collet with an internal cooling water-sealing sleeve, which is used to place the internal cooling drill bit into the water-sealing rubber ring in the hole, ensuring that water can only flow out from the water hole of the drill bit. Since the water-sealing sleeve restricts the axial movement of the drill bit after it is tightly pressed during installation, the drilling depth is guaranteed to be correct, thus overcoming the shortcomings of the prior art.
[0004] This utility model provides a spring chuck with an internal cooling water-sealing sleeve, comprising: a spring chuck shank body, an internal cooling drill bit mounting groove located on one side of the spring chuck shank body, and a water outlet hole penetrating the axis of the spring chuck shank body. The internal cooling drill bit is fixed in the internal cooling drill bit mounting groove by the spring chuck, and the central drill bit hole of the internal cooling drill bit communicates with the water outlet hole of the spring chuck shank body. The improvement is that it further includes: a water-sealing sleeve and a water-sealing rubber ring, with the spring chuck close to the spring chuck. A water-sealing sleeve mounting groove is provided on one side of the water outlet of the clamp body. The water-sealing sleeve is embedded in the water-sealing sleeve mounting groove. An embedding groove for installing a water-sealing rubber ring is provided inside the water-sealing sleeve. The water-sealing rubber ring is embedded inside the water-sealing sleeve. The inner diameter of the water-sealing sleeve and the internal cooling drill bit have a tolerance of 0.01mm. The inner diameter of the water-sealing rubber ring is 0.1mm smaller than the outer diameter of the internal cooling drill bit. The tail of the internal cooling drill bit is installed inside the water-sealing sleeve, and the edge of the tail of the internal cooling drill bit is installed inside the water-sealing rubber ring.
[0005] As a preferred embodiment of this utility model, the side of the water-sealing sleeve that contacts the internal cooling drill bit mounting groove is provided with an inclined guide edge, and the internal cooling drill bit mounting groove is provided with an inclined guide mating surface corresponding to the inclined guide edge.
[0006] As a preferred embodiment of this invention, the mating angle between the inclined guide edge and the inclined guide mating surface is 59°.
[0007] As a preferred embodiment of this utility model, the side of the internal cooling drill bit mounting groove near the water outlet is an isosceles trapezoid, and the hypotenuse of the isosceles trapezoid is an inclined guide mating surface.
[0008] The beneficial effects of this utility model are as follows: By adding a water-sealing rubber ring connected to the internal cooling drill bit, water can only flow out from the drill bit's water hole. Furthermore, the water-sealing sleeve and the internal cooling drill bit's mounting groove use a 59° inclined mating surface, ensuring that after the internal cooling drill bit is tightly closed, the water-sealing sleeve restricts the internal cooling drill bit's axial movement, thereby guaranteeing the correct drilling depth. Attached Figure Description
[0009] Other objects and results of this invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings, and with a more complete understanding of the invention. In the drawings:
[0010] Figure 1 This is a cross-sectional view of the overall structure in this embodiment.
[0011] Figure 2 This is the main view of the overall structure in this embodiment.
[0012] Figure 3 This is a cross-sectional view of the water-sealing jacket structure in this embodiment.
[0013] Attached reference numerals: 1. Spring collet shank body; 2. Internal cooling drill bit mounting groove; 3. Water outlet hole; 4. Internal cooling drill bit; 5. Spring collet; 6. Water sealing sleeve mounting groove; 7. Water sealing sleeve; 8. Water sealing rubber ring; 9. Inclined guide edge; 10. Inclined guide mating surface. Detailed Implementation
[0014] See Figure 1-3As shown, this embodiment provides a spring collet with an internal cooling water-sealing sleeve, comprising: a spring collet shank body 1, an internal cooling drill bit mounting groove 2 located on one side of the spring collet shank body 1, a water outlet hole 3 penetrating the axis of the spring collet shank body 1, a water-sealing sleeve 7, and a water-sealing rubber ring 8. An internal cooling drill bit 4 is fixed in the internal cooling drill bit mounting groove 2 by a spring collet 5. The central drill bit hole of the internal cooling drill bit 4 communicates with the water outlet hole 3 of the spring collet shank body 1. The spring collet 5 is close to the spring collet shank. A water-sealing sleeve mounting groove 6 is provided on one side of the water outlet 3 of the main body 1. The water-sealing sleeve 7 is embedded in the water-sealing sleeve mounting groove 6. An embedding groove for installing a water-sealing rubber ring 8 is provided inside the water-sealing sleeve 7. The inner diameter of the water-sealing sleeve 7 has a tolerance of 0.01mm with the internal cooling drill bit 4. The inner diameter of the water-sealing rubber ring 8 is 0.1mm smaller than the outer diameter of the internal cooling drill bit 4. The tail of the internal cooling drill bit 4 is installed in the water-sealing sleeve 8, and the edge of the tail of the internal cooling drill bit 4 is installed in the water-sealing rubber ring 8. An inclined guide edge 9 is provided on the side of the water-sealing sleeve 7 that contacts the internal cooling drill bit mounting groove 2. An inclined guide mating surface 10 is provided in the internal cooling drill bit mounting groove 2 corresponding to the inclined guide edge 9. The mating angle between the inclined guide edge 9 and the inclined guide mating surface 10 is 59°.
[0015] Furthermore, in this embodiment, the shape of the inner cooling drill bit mounting groove 2 near the water outlet 3 is an isosceles trapezoid, and the hypotenuse of the isosceles trapezoid is the inclined guide mating surface 10.
[0016] Working principle: The inner diameter of the water-sealing sleeve 7 and the inner cooling drill bit 4 have a tolerance of 0.01mm. The inner diameter of the water-sealing rubber ring 8 embedded inside the water-sealing sleeve 7 is 0.1mm smaller than the outer diameter of the inner cooling drill bit 4. Furthermore, the fitting angle between the inclined guide edge 9 and the inclined guide mating surface 10 is set to 59°, which ensures that the water exiting from the center of the inner cooling drill bit 4 will not leak from the opening of the spring collet 5 (ER collet). This avoids economic losses caused by insufficient water pressure leading to poor chip removal and drill bit breakage, and improves work efficiency and the safety of processed parts.
[0017] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A spring collet with an internal cooling water-sealing jacket, comprising: A spring collet shank body includes an internal cooling drill bit mounting groove on one side of the spring collet shank body and a water outlet hole penetrating the axis of the spring collet shank body. The internal cooling drill bit is fixed in the internal cooling drill bit mounting groove by the spring collet. The central drill bit hole of the internal cooling drill bit communicates with the water outlet hole of the spring collet shank body. The shank body is characterized by further including a water-sealing sleeve and a water-sealing rubber ring. A water-sealing sleeve mounting groove is provided on the side of the spring collet near the water outlet hole of the spring collet shank body. The water-sealing sleeve is embedded in the water-sealing sleeve mounting groove. An embedding groove for installing the water-sealing rubber ring is provided inside the water-sealing sleeve. The water-sealing rubber ring is embedded inside the water-sealing sleeve. The inner diameter of the water-sealing sleeve has a tolerance of 0.01 mm with the internal cooling drill bit. The inner diameter of the water-sealing rubber ring is 0.1 mm smaller than the outer diameter of the internal cooling drill bit. The tail of the internal cooling drill bit is installed in the water-sealing sleeve, and the edge of the tail of the internal cooling drill bit is installed in the water-sealing rubber ring.
2. A spring collet with an internal cooling water-sealing jacket according to claim 1, characterized in that, An inclined guide edge is provided on the side of the water sealing sleeve that contacts the internal cooling drill bit mounting groove, and an inclined guide mating surface is provided on the internal cooling drill bit mounting groove corresponding to the inclined guide edge.
3. A spring collet with an internal cooling water-sealing jacket according to claim 2, characterized in that, The angle between the inclined guide edge and the inclined guide mating surface is 59°.
4. A spring collet with an internal cooling water-sealing jacket according to any one of claims 1-3, characterized in that, The shape of the internal cooling drill bit mounting groove near the water outlet is an isosceles trapezoid, and the hypotenuse of the isosceles trapezoid is an inclined guide mating surface.