Special-shaped high-pressure inner-cooling drilling tool apron for numerical control lathe

Abstract

The utility model discloses a special-shaped high-pressure inner-cooling drilling tool apron for a numerical control lathe. The special-shaped high-pressure inner-cooling drilling tool apron is provided with a bottom face, a top face, a front side face, a rear side face, a left side face and a right side face, a countersunk through hole is formed in the top face, the special-shaped high-pressure inner-cooling drilling tool apron is connected to a turning tool apron arranged on a numerical control lathe tool turret through a countersunk through hole bolt, and the bottom face is attached to the mounting face of the turning tool apron. A drill bit clamping hole is formed in the position, close to the front side face, of the top face, a drill bit fixing screw hole is formed in the position, facing the drill bit clamping hole, of the front side face, a water inlet is formed in the right side face, the drill bit clamping hole is a blind hole, and the water inlet is communicated with the interior of the drill bit clamping hole. The automatic tailstock moving device is low in investment and high in efficiency, the time for manually moving the tailstock is shortened, one-time machining of products is guaranteed, and the problem that the products are scrapped due to sequential machining is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical production and processing, in particular to a special-shaped high-pressure internal cooling drilling tool holder for a numerically controlled lathe. Background Art

[0002] With the development of the machinery industry, precision machine tools have become widely used, and the emergence of multifunctional equipment, in particular, has led to a gradual increase in machining efficiency. However, on existing CNC lathes, the tailstocks of approximately 80% of these lathes are not capable of automatic movement. When machining shaft parts, the shaft is clamped to a chuck on the lathe spindle, the center on the tailstock retracts, and the drill is clamped in the boring toolholder for drilling. After drilling is completed, the center on the tailstock presses against the inner hole of the shaft part for positioning, and the boring toolholder then clamps the tool for machining the external diameter, threads, and grooves.

[0003] When the tailstock is fixed, the telescopic distance of the center on the tailstock is usually around 80 to 100 mm, and the length of the boring tool holder is usually 110 to 130 mm. If drilling and external cylindrical processing are not performed in sequence, the boring tool holder may collide with the center, which limits the processing of the product. If the center is not used on the tailstock to prevent the boring tool holder from colliding with the center, the workpiece will extend too long. The front thread processing is very difficult, and if it is processed in separate steps, the correction time needs to be increased, and the processing time will increase by 3-5 times. It is acceptable for small-batch processing, but large-scale processing will increase the cost. Especially in the external circle, thread and external groove processing of long-axis parts, if the center is not used, stable processing may not be possible.

[0004] Therefore, those skilled in the art are committed to developing a special-shaped high-pressure internal cooling drilling tool holder for a CNC lathe to solve the problems existing in the prior art. Utility Model Content

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to provide a special-shaped high-pressure internal cooling drilling tool holder for CNC lathes, which can also process the inner hole when using the tailstock center for processing. This not only ensures the coaxiality of the inner hole and the outer circle of the product, but also improves the processing efficiency, allowing efficient and stable large-scale production without changing equipment.

[0006] To achieve the above-mentioned purpose, the utility model provides a special-shaped high-pressure internal cooling drilling tool holder for a CNC lathe, the tool holder having a bottom surface and a top surface, a front side surface and a rear side surface, and a left side surface and a right side surface that are relatively arranged; a countersunk through hole is provided on the top surface, and the special-shaped high-pressure internal cooling drilling tool holder is connected to the tool holder arranged on the turret of the CNC lathe by the countersunk through hole bolt, and the bottom surface is in contact with the mounting surface of the tool holder; a drill clamping hole is provided on the top surface near the front side surface, a drill fixing screw hole is provided on the front side surface facing the drill clamping hole, and a water inlet is provided on the right side surface, the drill clamping hole is a blind hole, and the water inlet is connected to the inside of the drill clamping hole.

[0007] Furthermore, the left side surface and the right side surface are both perpendicular to the bottom surface, and the distance between the left side surface and the right side surface is consistent with the width of the mounting groove of the tool holder.

[0008] Furthermore, the drill bit clamping hole is perpendicular to the bottom surface.

[0009] Furthermore, the top surface includes a first top plane, a second top plane and a connecting slope, the first top plane and the second top plane are both parallel to the bottom surface, the height of the first top plane is higher than the height of the second top plane, and the first top plane and the second top plane are connected by the connecting slope.

[0010] Furthermore, the countersunk through hole includes a first countersunk through hole and a second countersunk through hole, the first countersunk through hole is opened on the first top plane, and the second countersunk through hole is opened on the second top plane.

[0011] Furthermore, the drill bit clamping hole is opened on the second top plane.

[0012] Furthermore, the distance between the bottom surface and the second top plane is 30 mm.

[0013] Furthermore, the drill bit clamping hole is configured to be able to clamp a drill bit, and the length of the drill bit is 70 mm.

[0014] Furthermore, when the drill bit is clamped into the special-shaped high-pressure internal cooling drilling tool holder, the overall height of the drill bit and the special-shaped high-pressure internal cooling drilling tool holder is no more than 74 mm.

[0015] Furthermore, the water inlet is connected to the water outlet of the CNC lathe through a high-pressure pipe.

[0016] The beneficial effects of the utility model are:

[0017] This utility model is particularly suitable for large-scale products that require the use of a center, but the tailstock cannot be automatically moved, and the inner hole needs to be processed. The utility model has low investment and high efficiency, reducing the time of manual tailstock movement, ensuring that the product is processed in one go, and avoiding the problem of product scrapping due to sequential processing.

[0018] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a part to be processed in a preferred embodiment of the present invention;

[0020] Figure 2 This is a structural diagram of a special-shaped high-pressure internal cooling drilling tool holder in a preferred embodiment of the present invention;

[0021] Figure 3 This is a front view of a special-shaped high-pressure internal cooling drilling tool holder according to a preferred embodiment of the present invention;

[0022] Figure 4 yes Figure 3 Middle AA section view;

[0023] Figure 5 This is a schematic structural diagram of a turning tool holder according to a preferred embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the installation of a special-shaped high-pressure internal cooling drilling tool holder according to a preferred embodiment of the present invention.

[0025] Among them, 10-special-shaped high-pressure internal cooling drilling tool holder, 11-countersunk through hole, 12-drill clamping hole, 13-drill fixing screw hole, 14-water inlet, 15-first top plane, 16-second top plane, 17-connecting inclined plane, 18-first countersunk through hole, 19-second countersunk through hole, 20-turning tool holder, 21-mounting surface, 22-mounting groove, 23-water outlet. DETAILED DESCRIPTION

[0026] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0027] In the drawings, components with identical structures are denoted by the same reference numerals, and components with similar structures or functions are denoted by similar reference numerals. The dimensions and thicknesses of each component shown in the drawings are arbitrary and are not limited by the present invention. For clarity, the thicknesses of components in some places in the drawings are exaggerated.

[0028] Example 1

[0029] like Figure 1 The shaft part shown has a 4.5mm inner bore, and the coaxiality between the inner bore and the outer diameter must be within 0.04. Therefore, both the inner bore and the outer diameter must be machined simultaneously in a single process. The head of this part has threads. Without a center, machining the small head outer diameter and threads would cause tool chatter, making it difficult to guarantee dimensional and surface finish. Using a center prevents the tailstock of the existing equipment from moving automatically, making it impossible to machine the inner bore.

[0030] The turret on the CNC lathe acts as a rotatable tool carrier that can be equipped with multiple tool holders to perform a variety of machining operations. By rotating the turret, tools can be quickly switched, improving machining efficiency and accuracy.

[0031] like Figure 2-6 As shown, this embodiment is designed based on the application characteristics of CNC lathes and provides a special-shaped high-pressure internal cooling drilling tool holder 10 for CNC lathes. The special-shaped high-pressure internal cooling drilling tool holder 10 has a bottom surface and a top surface, a front side surface and a rear side surface, and a left side surface and a right side surface that are arranged oppositely. A countersunk through-hole 11 is formed on the top surface, and the special-shaped high-pressure internal cooling drilling tool holder 10 is bolted to a turning tool holder 20 provided on the CNC lathe turret through the countersunk through-hole 11. The bottom surface is in contact with the mounting surface 21 of the turning tool holder 20. A drill bit clamping hole 12 is formed on the top surface near the front side surface, and a drill bit fixing screw hole 13 is formed on the front side surface facing the drill bit clamping hole 12. A water inlet 14 is formed on the right side surface. The drill bit clamping hole 12 is a blind hole and is connected to the inside of the drill bit clamping hole 12. The drill bit clamping hole 12 is perpendicular to the bottom surface.

[0032] The left side surface and the right side surface are both perpendicular to the bottom surface, and the distance between the left side surface and the right side surface is consistent with the width of the mounting groove 22 of the turning tool seat 20.

[0033] The top surface includes a first top plane 15, a second top plane 16 and a connecting bevel 17. The first top plane 15 and the second top plane 16 are both parallel to the bottom surface. The height of the first top plane 15 is higher than the height of the second top plane 16. The first top plane 15 and the second top plane 16 are connected by the connecting bevel 17.

[0034] The countersunk through hole 11 includes a first countersunk through hole 18 and a second countersunk through hole 19. The first countersunk through hole 18 is formed on the first top surface 15, and the second countersunk through hole 19 is formed on the second top surface 16. The drill bit clamping hole 12 is formed on the second top surface 16. The water inlet 14 is connected to the water outlet 23 of the CNC lathe via a high-pressure pipe.

[0035] The CNC lathe installs the special-shaped high-pressure internal cooling drilling tool holder 10 of this embodiment on the turning tool holder 20, and the distance between the bottom surface and the second top plane (the tool holder height) is 30 mm. The drill bit clamping hole 12 can clamp a drill bit, and the drill bit length is 70 mm. When the drill bit is clamped into the special-shaped high-pressure internal cooling drilling tool holder 10, the overall height of the drill bit and the special-shaped high-pressure internal cooling drilling tool holder 10 is no more than 74 mm. The telescopic distance of the center is 80 mm. This design effectively solves the problem of using a center for drilling and turning the outer circle in one process.

[0036] Example 2

[0037] This embodiment provides a method for using a special-shaped high-pressure internal coolant drilling tool holder, and the steps are as follows:

[0038] 1. Fix the special-shaped high-pressure internal cooling drilling tool holder 10 described in Example 1 on a turning tool holder 20, as shown in FIG. Figure 6 shown.

[0039] 2. Connect the high-pressure pipe to the water inlet 14 of the special-shaped high-pressure internal cooling drilling tool holder 10 and the water outlet 23 of the CNC lathe. Preferably, the water outlet 23 of the CNC lathe is set on the tool holder 20.

[0040] 3. Install and fix the drill bit in the special-shaped high-pressure internal cooling drilling tool holder 10.

[0041] 4. Use the tool installed on another turning tool holder to turn the end face.

[0042] 5. Use the drill bit installed on the special-shaped high-pressure internal cooling drilling tool holder 10 to drill.

[0043] 6. After drilling is completed, the center automatically moves forward, fixes the workpiece, and uses the tool installed on another turning tool holder to process the external cylindrical features.

[0044] 7. After the outer circle feature processing is completed, the center will automatically retract and maintain a distance of about 76mm from the end face of the product.

[0045] 8. Use the drill bit or reamer installed on the special-shaped high-pressure internal cooling drilling tool holder 10 to perform internal hole processing.

[0046] Processing analysis:

[0047] Because the distance between the tip and the end face of the product part is about 76mm, the length of the traditional boring tool holder exceeds this distance, making drilling and boring impossible. This utility model effectively solves this problem and significantly improves the processing capacity of existing equipment.

[0048] Through the above examples, it can be seen that the present invention solves the problem of limited tailstock movement in CNC lathes to a great extent and meets the need to complete the inner and outer diameters of products in one process. This will significantly improve the processing efficiency and product quality of enterprises for such parts.

[0049] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A special-shaped high-pressure internal cooling drilling tool holder for CNC lathes, characterized in that: The special-shaped high-pressure internal cooling drilling tool holder has a bottom surface and a top surface, a front side surface and a rear side surface, and a left side surface and a right side surface that are relatively arranged; a countersunk through hole is provided on the top surface, and the special-shaped high-pressure internal cooling drilling tool holder is connected to the turning tool holder set on the turret of the CNC lathe through the countersunk through hole bolt, and the bottom surface is in contact with the mounting surface of the turning tool holder; a drill clamping hole is provided on the top surface near the front side surface, and a drill fixing screw hole is provided on the front side surface facing the drill clamping hole, and a water inlet is provided on the right side surface, and the drill clamping hole is a blind hole, and the water inlet is connected to the inside of the drill clamping hole.

2. The special-shaped high-pressure internal cooling drilling tool holder for a CNC lathe according to claim 1, characterized in that: The left side surface and the right side surface are both perpendicular to the bottom surface, and the distance between the left side surface and the right side surface is consistent with the width of the mounting groove of the turning tool seat.

3. The special-shaped high-pressure internal cooling drilling tool holder for a CNC lathe according to claim 1, characterized in that: The drill bit clamping hole is perpendicular to the bottom surface.

4. The special-shaped high-pressure internal cooling drilling tool holder for a CNC lathe according to claim 1, characterized in that: The top surface includes a first top plane, a second top plane and a connecting inclined plane. The first top plane and the second top plane are both parallel to the bottom surface. The height of the first top plane is higher than the height of the second top plane. The first top plane and the second top plane are connected by the connecting inclined plane.

5. The special-shaped high-pressure internal cooling drilling tool holder for a CNC lathe according to claim 4, characterized in that: The countersunk through hole includes a first countersunk through hole and a second countersunk through hole. The first countersunk through hole is opened on the first top plane, and the second countersunk through hole is opened on the second top plane.

6. The special-shaped high-pressure internal cooling drilling tool holder for a CNC lathe according to claim 4, characterized in that: The drill bit clamping hole is opened on the second top plane.

7. The special-shaped high-pressure internal cooling drilling tool holder for a CNC lathe according to claim 6, characterized in that: The distance between the bottom surface and the second top plane is 30 mm.

8. The special-shaped high-pressure internal cooling drilling tool holder for a CNC lathe according to claim 7, characterized in that: The drill bit clamping hole is configured to be able to clamp a drill bit, and the length of the drill bit is 70 mm.

9. The special-shaped high-pressure internal cooling drilling tool holder for a CNC lathe according to claim 8, characterized in that: When the drill bit is clamped into the special-shaped high-pressure internal cooling drilling tool holder, the overall height of the drill bit and the special-shaped high-pressure internal cooling drilling tool holder is no more than 74 mm.

10. The special-shaped high-pressure internal cooling drilling tool holder for a CNC lathe according to claim 1, characterized in that: The water inlet is connected to the water outlet of the CNC lathe through a high-pressure pipe.

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