Method for machining large drill hole in arc surface of part for blasting
By adopting the arc-surface large drilling method on the blasting parts, and using the cooperation of multi-function drill bits and milling cutters, the workpiece is uniformly processed in the same vertical plane, solving the uneven leakage in the prior art The pressure problem ensures the uniformity of hole positions in all directions and the uniformity of pressure relief pressure, and improves the safety of parts.
Patent Information
- Application Number
- CN202411520575.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-01-03
AI Technical Summary
When the existing blasting parts are relieved, due to the cylindrical structure and uneven pressure relief holes, the pressure relief capabilities in each direction are different, causing blowout and safety hazards.
A large drilling method for arc surface is adopted, and the multi-function drill bit and milling cutter on the flying cutter plate is driven by the spindle and feed device to achieve multi-directional uniform processing of the workpiece on the same vertical plane, using the second cutter The multi-directional movement of the disc and the rotation of the spindle ensure uniformity and accuracy of drilling and reaming.
The uniformity of hole positions in all directions and the uniformity of pressure relief pressure are achieved, which avoids blowing and safety hazards, and improves the reliability of parts.
Smart Images
Figure CN119238126A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a method for drilling a large hole on an arc surface of a blasting part. Background Art
[0002] In some military fields, parts filled with gunpowder need to release pressure outward when the gunpowder burns and explodes. When releasing pressure, the parts are required to have consistent pressure relief capabilities in each direction. Existing parts are usually cylindrical, and multiple pressure relief holes are evenly arranged on the circumferential wall of the cylinder. The pressure relief holes are prone to uneven hole expansion during production and processing, resulting in different pressure relief capabilities in various directions of the parts, causing bursting, damage to products, and even endangering lives.
[0003] At present, the workpiece is first drilled from the side, and then the radial hole is drilled into the workpiece. This processing method will drive part of the burr generated by the side hole into the inside of the workpiece, and when drilling the radial hole, part of the burr will be taken away and part will remain on the side hole. The amount and position of the burr taken away are uncertain, which leads to uneven processing of the side holes and uneven pressure relief during blasting. Summary of the invention
[0004] The present invention provides a method for drilling a large circular arc surface of a blasting part, comprising a spindle, a feeding device and a flying cutter disc, wherein the spindle clamps the workpiece and drives the workpiece to rotate;
[0005] The feeding device is connected to the flying cutter disc and drives the flying cutter disc and the main shaft to move closer to or away from each other;
[0006] The flying cutter disc is provided with a first dividing cutter disc and a second dividing cutter disc, the first dividing cutter disc is provided with a first drill bit and a first milling cutter, and the second dividing cutter disc is provided with a second drill bit;
[0007] The feeding device drives the first cutter disc to move in the radial direction of the workpiece, and the feeding device drives the second cutter disc to move up and down, left and right, and forward and backward. The second drill bit drills and expands the workpiece. When expanding the hole, the spindle drives the workpiece to rotate so that the processed positions of the workpiece are on the same vertical plane.
[0008] The processing method is as follows:
[0009] S1. Fix the workpiece on the spindle;
[0010] S2. The feeding device drives the first cutter disc and drives the first milling cutter to turn the outer circle of the workpiece. After the outer circle is turned, the feeding device drives the first milling cutter to leave the workpiece;
[0011] S3. The feeding device drives the first cutter disc close to the workpiece and forms a radial hole in the workpiece through the first drill bit;
[0012] S4. The feeding device drives the second cutter disc and drives the second drill bit to move toward the side of the workpiece, and the second drill bit drills a hole on the side of the workpiece to a set depth;
[0013] S5. The feeding device drives the second drill bit on the second cutter disc to make a circular motion on a vertical plane and expand the drill hole. When the second drill bit is expanding the hole, the spindle drives the workpiece to rotate to ensure that the contact position of the workpiece and the second drill bit is on the same vertical plane, so that different positions of the same hole are processed uniformly;
[0014] S6. A chamfering knife is provided on the second blade disc, and the chamfering knife is used to chamfer the expanded hole.
[0015] In one or more embodiments, the spindle is connected to a servo motor, and the servo motor drives the spindle to rotate quickly or slowly or in a forward or reverse direction.
[0016] In one or more embodiments, the second cutting disc is disposed on a second bracket, the second bracket is disposed on a frame of a machine tool, a vertical guide rail is disposed on the frame, and the second bracket is installed on the vertical guide rail and moves in a vertical direction.
[0017] In one or more embodiments, a transverse guide rail is disposed on the frame, and the second bracket can move along the transverse guide rail to achieve transverse movement.
[0018] In one or more embodiments, the second frame is further provided with front and rear guide rails, and the second blade disc can move along the front and rear guide rails.
[0019] In one or more embodiments, S5 is further provided after S4, and S5 is: the feeding device drives the first cutting disc to approach the workpiece and forms a radial hole in the workpiece through the first drill bit.
[0020] In one or more embodiments, S6 is further provided after S5, and S6 is: a chamfering cutter is provided on the second cutting disc, and the expanded hole is chamfered after the radial hole is processed.
[0021] In one or more embodiments, in S4, the angle at which the main shaft rotates is equal to the angle at which the second drill bit rotates on the vertical plane.
[0022] In one or more embodiments, the drilling operations S1-S4 are repeated for different positions on the same vertical plane of the workpiece, so that the holes at different positions on the same vertical plane of the workpiece are processed in a standardized manner and the different positions of each hole are processed uniformly.
[0023] The beneficial effects of the present invention are as follows: by setting a second cutter disc, and the second cutter disc can move in three directions, the second drill bit can move in multiple directions to achieve precise alignment, and at the same time the second drill bit can realize circular motion along the vertical plane when working. When drilling, the second drill bit moves in a circular motion in the vertical plane, and at the same time the spindle drives the chuck to rotate and the rotation angle is consistent with the movement angle of the second drill bit, so that the processed point of the workpiece is always on the vertical plane, and stable processing of the workpiece is achieved. The processing position of the second drill bit is consistent, so that the hole expansion is stable and uniform, and the inner and outer walls of the hole are chamfered during chamfering to make the inner wall of the hole uniform. When the parts are in use, the pressure relief pressure of the holes in all directions and each place of each hole is uniform. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 A side view of the blasting parts.
[0025] Figure 2 This is a top view of the blasting parts.
[0026] Figure 3 Schematic diagram of locomotive structure showing a method for drilling large holes on arc surfaces of parts for blasting.
[0027] Figure 4 Another schematic diagram of a locomotive showing a method for drilling large holes on arc surfaces of parts for blasting.
[0028] Figure 5 The present invention is a schematic diagram of another embodiment of a locomotive structure of a method for drilling large holes on arc surfaces of blasting parts. DETAILED DESCRIPTION
[0029] The present application scheme is further described as follows in conjunction with the accompanying drawings:
[0030] See attached Figure 1-5 A method for drilling large holes on arc surfaces of parts for blasting, comprising a spindle 1, a feeding device and a flying cutter disc 2, wherein the spindle 1 clamps a workpiece 5 and drives the workpiece 5 to rotate;
[0031] The feeding device is connected to the flying cutter disc 2 and drives the flying cutter disc 2 and the main shaft 1 to move closer to or away from each other;
[0032] The flying cutter disc 2 is provided with a first dividing cutter disc 3 and a second dividing cutter disc 4, the first dividing cutter disc 3 is provided with a first drill bit and a first milling cutter, the second dividing cutter disc 4 is provided with a second drill bit, the first drill bit and the second drill bit are drill bits, the first milling cutter is a milling cutter, and the drill bit and the milling cutter are direct applications of the prior art;
[0033] The feeding device drives the first cutter disc 3 to move in the radial direction of the workpiece 4, and the feeding device drives the second cutter disc 4 to move up and down, left and right, and forward and backward. The second drill bit drills and expands the workpiece 5. When expanding the hole, the spindle 1 drives the workpiece 5 to rotate so that the processed positions of the workpiece 5 are on the same vertical plane;
[0034] The processing method is as follows:
[0035] S1. Fix the workpiece 5 on the spindle 1;
[0036] S2. The feeding device drives the first cutter disc 3 and drives the first milling cutter to turn the outer circle of the workpiece 5. After the outer circle is turned, the feeding device drives the first milling cutter to leave the workpiece 5;
[0037] S3. The feeding device drives the first cutter disc 3 to approach the workpiece 5 and forms a radial hole in the workpiece 5 through the first drill bit.
[0038] S4. The feeding device drives the second cutter disc 4 and drives the second drill bit to move toward the side of the workpiece 5, and the second drill bit drills a hole on the side of the workpiece 5 to a set depth;
[0039] S5. The feeding device drives the second drill bit on the second cutter disc 4 to make a circular motion on a vertical plane and expand the hole. When the second drill bit is expanding the hole, the spindle 1 drives the workpiece 5 to rotate to ensure that the contact position of the workpiece 5 and the second drill bit is on the same vertical plane.
[0040] Preferably, a chuck is provided on the spindle 1, and the workpiece 5 is clamped by the chuck. The first blade disc 3 and the second blade disc 4 are driven by a servo motor and move along corresponding sliding tracks.
[0041] Furthermore, the main shaft 1 is connected to a servo motor, and the servo motor drives the main shaft 1 to rotate quickly or slowly or forward or reverse.
[0042] Furthermore, the second blade disc 4 is arranged on a second bracket 41, the second bracket 41 is arranged on a frame of a machine tool, a vertical guide rail 42 is arranged on the frame, and the second bracket 41 is installed on the vertical guide rail 42 and moves in a vertical direction.
[0043] Furthermore, a transverse guide rail 43 is provided on the frame, and the second bracket 41 can move along the transverse guide rail 43 to achieve transverse movement.
[0044] Furthermore, the second machine frame 41 is also provided with front and rear guide rails 44 , and the second blade disc 4 can move along the front and rear guide rails 44 .
[0045] Furthermore, after S5, S6 is further provided, and S6 is: a chamfering knife is provided on the second blade disc 4, and the chamfering knife chamfers the inner wall and the outer wall of the expanded hole.
[0046] Further, in S4, the rotation angle of the main shaft 1 is equal to the rotation angle of the second drill bit on the vertical plane.
[0047] Further, the operations S1 to S4 are repeated for drilling holes at different positions on the same vertical surface of the workpiece 5 .
[0048] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.
[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0050] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0051] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0053] The above-mentioned preferred implementation modes should be regarded as illustrative examples of the implementation modes of the present application scheme. Any technical deductions, replacements, improvements, etc. that are identical or similar to the present application scheme or made based on this scheme should be regarded as within the scope of protection of this patent.
Claims
1. A method for drilling large holes on arc surfaces of blasting parts, characterized in that: It includes a spindle, a feeding device and a flying cutter disc, wherein the spindle clamps the workpiece and drives the workpiece to rotate; The feeding device is connected to the flying cutter disc and drives the flying cutter disc and the main shaft to move closer to or away from each other; The flying cutter disc is provided with a first dividing cutter disc and a second dividing cutter disc, the first dividing cutter disc is provided with a first drill bit and a first milling cutter, and the second dividing cutter disc is provided with a second drill bit; The feeding device drives the first cutter disc to move in the radial direction of the workpiece, and the feeding device drives the second cutter disc to move up and down, left and right, and forward and backward. The second drill bit drills and expands the workpiece. When expanding the hole, the spindle drives the workpiece to rotate so that the processed positions of the workpiece are on the same vertical plane. The processing method is as follows: S1. Fix the workpiece on the spindle; S2. The feeding device drives the first cutter disc and drives the first milling cutter to turn the outer circle of the workpiece. After the outer circle is turned, the feeding device drives the first milling cutter to leave the workpiece; S3. The feeding device drives the first cutter disc close to the workpiece and forms a radial hole in the workpiece through the first drill bit; S4. The feeding device drives the second cutter disc and drives the second drill bit to move toward the side of the workpiece, and the second drill bit drills a hole on the side of the workpiece to a set depth; S5. The feeding device drives the second drill bit on the second cutter disc to make a circular motion on a vertical plane and expand the drill hole, and when the second drill bit is expanding the hole, the spindle drives the workpiece to rotate to ensure that the contact position of the workpiece and the second drill bit is on the same vertical plane; S6. A chamfering knife is provided on the second blade disc, and the chamfering knife is used to chamfer the expanded hole.
2. The method for drilling large holes on arc surfaces of blasting parts according to claim 1, characterized in that: The main shaft is connected to a servo motor, and the servo motor drives the main shaft to rotate quickly or slowly or forward or reverse.
3. The method for drilling large holes on arc surfaces of blasting parts according to claim 1, characterized in that: The second blade disc is arranged on a second bracket, the second bracket is arranged on a frame of a machine tool, a vertical guide rail is arranged on the frame, and the second bracket is installed on the vertical guide rail and moves in a vertical direction.
4. The method for drilling large holes on arc surfaces of blasting parts according to claim 3, characterized in that: The frame is provided with a transverse guide rail, and the second bracket can move along the transverse guide rail to achieve transverse movement.
5. The method for drilling large holes on arc surfaces of blasting parts according to claim 3 or 4, characterized in that: The second frame is also provided with front and rear guide rails, and the second blade disc can move along the front and rear guide rails.
6. The method for drilling large holes on arc surfaces of blasting parts according to claim 1, characterized in that: In S4, the main shaft rotates at an angle equal to the angle at which the second drill bit rotates on the vertical plane.
7. The method for drilling large holes on arc surfaces of blasting parts according to claim 1, characterized in that: Repeat the operations S1-S4 for drilling holes at different positions on the same vertical surface of the workpiece.