Internal thread machining device

Abstract

The embodiment of the application discloses a female thread processing device, which comprises a fixed connecting plate, a first positioning block and a second positioning block.The middle part of the fixed connecting plate is provided with a fixed hole for being installed in the groove of a workbench.The vertical direction of the first positioning block is provided with a first connecting hole.The top surface of the first positioning block is an inclined surface, and the side surface is provided with a first positioning hole.The vertical direction of the second positioning block is provided with a second connecting hole.The second positioning block is fixedly connected with the fixed connecting plate through a connecting piece when the second connecting hole corresponds to the fixed hole.The side surface of the second positioning block is provided with a second positioning hole.The clamping groove of a workpiece to be punched is clamped on the second positioning block, and the side hole of the workpiece to be punched corresponds to the second positioning hole, so that the workpiece to be punched is connected with the second positioning block through a positioning piece.The punching efficiency and forming quality of the workpiece are improved.

Description

Technical Field

[0001] This invention relates to the field of machining, and more particularly to an internal thread machining apparatus. Background Technology

[0002] The ear seat of a certain product has a 6-M10 internal thread at the top of its arc-shaped part, which is radially distributed. The process arrangement is to process the threaded bottom hole by the machining center, then use a head taper to straighten the thread, and finally the fitter process to complete the machining of the 6-M10 thread according to the straightened thread.

[0003] The current processing technology—manual machining by fitter—is inefficient, causes severe tap wear, and the "lead-in threading" process takes up machining center time, seriously affecting the overall processing efficiency and quality of the workshop.

[0004] There is currently no effective solution to the problems of low efficiency and poor quality in fitter processing in existing technologies. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an internal thread processing device. By setting different types of positioning blocks, the workpiece is positioned, and a machine tool can be used to process the internal thread of the workpiece, thereby solving the problems of low drilling efficiency and poor quality in the prior art.

[0006] To achieve the above objectives, the present invention provides an internal thread processing device, comprising: a fixed connecting plate having a fixing hole in its center for installation in a groove of a worktable; a first positioning block having a first connecting hole in its vertical direction, wherein when the first connecting hole corresponds to the fixing hole, the first positioning block is fixedly connected to the fixed connecting plate by a connector; the top surface of the first positioning block is inclined, and a first positioning hole is provided on its side surface, wherein when the slot of the workpiece to be drilled is engaged in the first positioning block, and the side hole of the workpiece to be drilled corresponds to the first positioning hole, the workpiece to be drilled is connected to the first positioning block by a positioning connector; a second positioning block having a second connecting hole in its vertical direction, wherein when the second connecting hole corresponds to the fixing hole, the second positioning block is fixedly connected to the fixed connecting plate by a connector; and a second positioning hole is provided on the side surface of the second positioning block, wherein when the slot of the workpiece to be drilled is engaged in the second positioning block, and the side hole of the workpiece to be drilled corresponds to the second positioning hole, the workpiece to be drilled is connected to the second positioning block by a positioning connector.

[0007] Optionally, the fixing hole is a threaded hole; both the first connecting hole and the second connecting hole are threaded holes.

[0008] Optionally, the first connecting hole includes a countersunk hole and a threaded through hole, which are arranged sequentially from the top to the bottom of the first positioning block. The countersunk hole and the threaded through hole are coaxial, and the diameter of the countersunk hole is larger than the diameter of the threaded through hole. The second connecting hole includes a countersunk hole and a threaded through hole, which are arranged sequentially from the top to the bottom of the second positioning block. The countersunk hole and the threaded through hole are coaxial, and the diameter of the countersunk hole is larger than the diameter of the threaded through hole.

[0009] Alternatively, the connector may be a screw.

[0010] Alternatively, the first positioning block may have two first positioning holes on its side, and the two first positioning holes are located at the same horizontal height on the side of the first positioning block.

[0011] Optionally, the second positioning block has four second positioning holes on its side. Two second positioning holes form a group, and two positioning holes in any group are located at the same horizontal height on the side of the second positioning block. The two groups of positioning holes are located at different horizontal heights on the side of the second positioning block.

[0012] Alternatively, the positioning element may be a pin.

[0013] Optionally, the parallelism of the two sides of the first positioning block is no greater than 0.02 mm.

[0014] Optionally, the parallelism of the two sides of the second positioning block is no greater than 0.02 mm.

[0015] Alternatively, the groove of the worktable may be a T-slot.

[0016] The above technical solution has the following beneficial effects: by setting a fixed connecting plate and a first positioning block and a second positioning block respectively connected to the fixed connecting plate, the workpiece to be drilled can be mounted on different positioning blocks to complete the positioning of the workpiece; the top surface of the first positioning block is an inclined surface, which facilitates the machining of the radial threaded holes on both sides of the workpiece to be drilled, and the top surface of the second positioning block is a flat surface, which facilitates the machining of the threaded hole in the middle of the workpiece to be drilled; after the two positioning blocks are fixed to the workpiece to be drilled, the workpiece to be drilled can be drilled by the machine tool drill bit, which improves the machining efficiency and machining quality. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the workpiece provided by existing technology;

[0019] Figure 2 This is a structural schematic diagram of the workpiece from another perspective provided by existing technology;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of a workpiece provided by existing technology;

[0021] Figure 4 This is a schematic diagram of the internal thread processing device provided in this embodiment of the invention during use;

[0022] Figure 5 This is a schematic diagram of the internal thread processing device provided in an embodiment of the present invention;

[0023] Figure 6 This is a side view of the first positioning block provided in an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the top surface structure of the first positioning block provided in an embodiment of the present invention;

[0025] Figure 8 This is a cross-sectional structural diagram of the first positioning block provided in an embodiment of the present invention;

[0026] Figure 9 This is a side view of the second positioning block provided in an embodiment of the present invention;

[0027] Figure 10 This is a schematic diagram of the top surface structure of the second positioning block provided in an embodiment of the present invention;

[0028] Figure 11 This is a cross-sectional structural diagram of the second positioning block provided in an embodiment of the present invention;

[0029] Figure 12 This is a schematic diagram of the top surface structure of the fixed connection plate provided in an embodiment of the present invention;

[0030] Figure 13 This is a cross-sectional structural diagram of the fixed connection plate provided in an embodiment of the present invention.

[0031] Reference numerals: 101-side hole; 102-internal thread hole; 1-worktable; 2-internal thread processing device; 21-first positioning block; 211-first positioning hole; 212-first connecting hole; 22-fixed connecting plate; 221-fixing hole; 23-connector; 241-second positioning hole; 242-second connecting hole. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] To address the problems of low efficiency and poor processing quality in manual machining processes in existing technologies, this invention provides an internal thread machining device, comprising: a fixed connecting plate 22, with a fixing hole 221 in the middle for mounting in a groove of a workbench 1; a first positioning block 21, with a first connecting hole 212 in the vertical direction, wherein when the first connecting hole 212 corresponds to the fixing hole 221, the first positioning block 21 is fixedly connected to the fixed connecting plate 22 via a connector 23; the top surface of the first positioning block 21 is inclined, and the side surface has a first positioning hole 211, wherein when the workpiece to be drilled is inserted into the groove of the first positioning block 21, the first positioning block 21 is fixedly connected to the fixed connecting plate 22 via a connector 23; the top surface of the first positioning block 21 is inclined, and the side surface has a first positioning hole 211, wherein when the slot of the workpiece to be drilled is engaged... A positioning block 21 is provided, and when the side hole 101 of the workpiece to be drilled corresponds to the first positioning hole 211, the workpiece to be drilled is connected to the first positioning block 21 through the positioning member; a second positioning block is provided, and a second connecting hole 242 is provided in the vertical direction of the second positioning block. When the second connecting hole 242 corresponds to the fixing hole 221, the second positioning block is fixedly connected to the fixed connecting plate 22 through the connecting member 23; a second positioning hole 241 is provided on the side of the second positioning block. When the slot of the workpiece to be drilled is installed in the second positioning block, and the side hole 101 of the workpiece to be drilled corresponds to the second positioning hole 241, the workpiece to be drilled is connected to the second positioning block through the positioning member.

[0034] Figure 1 This is a structural diagram of the workpiece provided by existing technology. Figure 1 The image shows the side structure of the workpiece, as follows: Figure 1 As shown, each side of the workpiece has four side holes 101, and the top of the workpiece is curved. Figure 2 This is a structural schematic diagram of the workpiece from another perspective, provided by existing technology. Figure 2 The top surface structure of the workpiece is shown below. Figure 2 As shown, two internal threaded holes 102 form a group, and the completed workpiece includes three groups of internal threaded holes. Figure 2 In the middle, there are internal threaded hole groups located on both sides and between the two internal threaded hole groups, that is, the internal threaded hole group located in the middle of the workpiece. The internal threaded hole group located at the top needs to be opened concentrically. Figure 3 This is a cross-sectional structural diagram of a workpiece provided by existing technology, such as... Figure 3 As shown, there is a space between the two sides of the workpiece, hereinafter referred to as a slot, which can be mounted on the first positioning component or the second positioning component.

[0035] Figure 4 This is a schematic diagram of the internal thread processing device provided in this embodiment of the invention during use, as shown below. Figure 4 As shown, the internal thread processing device 2 needs to be fixed on the worktable 1 for use. After the internal thread processing device is fixed, the workpiece to be drilled is limited on the internal thread processing device, thereby controlling the drill bit of the machine tool to drill from the top of the internal thread hole 102 of the workpiece to be drilled, thereby improving the drilling efficiency. Moreover, because the workpiece to be drilled is precisely limited, the quality of the formed workpiece is improved.

[0036] Figure 5 This is a schematic diagram of the internal thread processing device provided in an embodiment of the present invention. Figure 5 This is actually a schematic diagram showing the connection between the first positioning block 21 and the fixed connecting plate 22. The connection between the second positioning block and the fixed connecting plate 22 is similar. Figure 5 Similar. For example... Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 12 , Figure 13 As shown, the fixed connecting plate 22 is disposed in the groove of the workbench 1. When the first connecting hole 212 of the first positioning block 21 corresponds to the fixing hole 221 of the fixed connecting plate 22, the connecting piece 23 can pass through the first connecting hole 212 and connect to the fixing hole 221, thereby fixing the first positioning block 21 and the fixed connecting plate 22 relative to each other. After the fixed connecting plate 22 is connected to the first positioning block 21, the slot of the workpiece to be drilled is locked on the first positioning block 21, and the workpiece to be drilled is moved until the side hole 101 of the workpiece to be drilled corresponds to the first positioning hole 211 of the first positioning block 21. At this time, the positioning piece is inserted, thereby completing the relative fixing of the workpiece to be drilled and the first positioning block 21. Since the top surface of the workpiece to be drilled is arc-shaped, the internal thread holes 102 on both sides need to be set concentrically, that is, not vertically relative to the plane of the workbench 1. Therefore, the top surface of the first positioning block 21 is adaptively tilted according to the concentric angle of the internal thread holes 102. The side of the workpiece to be drilled that is inclined upwards near the top surface of the first positioning block 21 is designated as the machining side, and the top drill bit is used for drilling. After the two internal threaded holes 102 on this side are drilled, the orientation of the workpiece to be drilled is reversed to complete the drilling of the internal threaded holes 102 on the other side.

[0037] like Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13As shown, after the second positioning block and the fixed connecting plate 22 are fixed through the second connecting hole 242 and the fixing hole 221, the second positioning block and the workpiece to be drilled are fixed relative to each other in the same way as the above fixing method (connected to the side hole 101 of the workpiece to be drilled through the second positioning hole 241). The top surface of the second positioning block is a plane, which is suitable for machining the internal thread hole 102 in the middle of the workpiece to be drilled. Therefore, after the second positioning block is fixed to the workpiece to be drilled, the drill bit can be controlled to drill the two internal thread holes 102 in the middle position.

[0038] As an optional implementation, the fixing hole 221 is a threaded hole; both the first connecting hole 212 and the second connecting hole 242 are threaded holes.

[0039] To facilitate the connection and disassembly of the fixed connecting plate 22 with the first positioning block 21 and the second positioning block, the fixing hole 221, the first connecting hole 212 and the second connecting hole 242 in this embodiment are all threaded holes.

[0040] As an optional implementation, the first connecting hole 212 includes a countersunk hole and a threaded through hole, which are arranged sequentially from the top to the bottom of the first positioning block 21. The countersunk hole and the threaded through hole are coaxial, and the diameter of the countersunk hole is larger than the diameter of the threaded through hole. The second connecting hole 242 includes a countersunk hole and a threaded through hole, which are arranged sequentially from the top to the bottom of the second positioning block. The countersunk hole and the threaded through hole are coaxial, and the diameter of the countersunk hole is larger than the diameter of the threaded through hole.

[0041] like Figure 8 As shown, the first connecting hole 212 includes a countersunk hole at the top and a threaded through hole communicating with the countersunk hole. The two are coaxial. The diameter of the countersunk hole is larger than the diameter of the threaded through hole. When the connector 23 enters the first connecting hole 212, it can be limited by the countersunk hole and connect the first positioning block 21 to the fixed connecting plate 22.

[0042] like Figure 11 As shown, the second connecting hole 242 also includes a countersunk hole at the top and a threaded through hole communicating with the countersunk hole. The two are coaxial. The diameter of the countersunk hole is larger than the diameter of the threaded through hole. When the connector 23 enters the second connecting hole 242, it can be limited by the countersunk hole and connect the second positioning block to the fixed connecting plate 22.

[0043] As an alternative implementation, the connector 23 is a screw.

[0044] The positioning element is a standard M10 threaded screw.

[0045] As an optional implementation method, such as Figure 6 As shown, the first positioning block 21 has two first positioning holes 211 on its side, and the two first positioning holes 211 are located at the same horizontal height on the side of the first positioning block 21.

[0046] like Figure 6 As shown, the first positioning block 21 has two first positioning holes 211 on its side, and the two first positioning holes 211 are located at the same horizontal height. During positioning, the two positioning components can be used for positioning at the same time, thereby improving the stability of the fixation between the first positioning block 21 and the workpiece to be drilled.

[0047] As an optional implementation method, such as Figure 9 As shown, the second positioning block has four second positioning holes 241 on its side. Two second positioning holes 241 form a group. Two positioning holes in any group are located at the same horizontal height on the side of the second positioning block. The two groups of positioning holes are located at different horizontal heights on the side of the second positioning block.

[0048] like Figure 9 As shown, the second positioning block has four second positioning holes 241 on its side, two of which are at the same horizontal level, and the other two are at another horizontal level. During positioning, multiple positioning components can be used simultaneously, thereby improving the stability of the fixation between the second positioning block and the workpiece to be drilled.

[0049] As an optional implementation, the positioning element is a pin.

[0050] The pin is a standard Φ8.5 pin.

[0051] As an optional implementation, the parallelism of the two sides of the first positioning block 21 is no greater than 0.02 mm.

[0052] The two opposite sides of the first positioning block 21 need to be finished by grinding, and the parallelism requirement is ≤0.02mm.

[0053] As an optional implementation, the parallelism of the two sides of the second positioning block is no greater than 0.02 mm.

[0054] The two opposite sides of the second positioning block need to be finished by grinding, and their parallelism requirement is ≤0.02mm.

[0055] As an optional implementation method, such as Figure 4 As shown, the groove of workbench 1 is a T-shaped groove.

[0056] The operating method of the internal thread machining device is as follows:

[0057] 1. Secure the first positioning block and the second positioning block to the two fixed connecting plates on the worktable using M10 standard screws.

[0058] 2. Place the slot of the workpiece to be drilled into the first positioning block (to restrict the axial rotation of the workpiece to be drilled), and move it back and forth to align the side hole of the workpiece to be drilled with the first positioning hole of the first positioning block (at this time, the 2-M10 threaded bottom hole at the top of the arc of the workpiece to be drilled is perpendicular to the worktable).

[0059] 3. Insert a standard pin with a diameter of 8.5 into the hole (to restrict the longitudinal movement of the workpiece to be drilled).

[0060] 4. Use a radial drilling machine to complete the machining of 2-M10 internal threads.

[0061] 5. Pull out the Φ8.5 locating pin.

[0062] 6. By changing the orientation of the workpiece, realign the side hole of the workpiece to be drilled with the first positioning hole of the first positioning seat (the other 2 M10 threaded bottom holes at the top of the arc of the part are perpendicular to the worktable).

[0063] 7. Insert a standard Φ8.5 pin into the hole (to restrict the longitudinal movement of the workpiece to be drilled).

[0064] 8. Use a radial drilling machine to complete the internal thread machining of the other 2 M10.

[0065] 9. Place the slot of the workpiece to be drilled into the second positioning block (to restrict the axial rotation of the part), and move it back and forth to align the side hole of the workpiece to be drilled with the second positioning hole of the second positioning block (the 2-M10 threaded bottom hole at the center of the top of the arc part of the workpiece to be drilled is perpendicular to the worktable).

[0066] 10. Insert a standard Φ8.5 pin into the hole (to restrict the longitudinal movement of the part).

[0067] 11. Use a radial drilling machine to machine the 2-M10 internal thread at the center of the top of the arc part of the workpiece to be drilled.

[0068] The above technical solution has the following beneficial effects: by setting a fixed connecting plate and a first positioning block and a second positioning block respectively connected to the fixed connecting plate, the workpiece to be drilled can be mounted on different positioning blocks to complete the positioning of the workpiece; the top surface of the first positioning block is an inclined surface, which facilitates the machining of the radial threaded holes on both sides of the workpiece to be drilled, and the top surface of the second positioning block is a flat surface, which facilitates the machining of the threaded hole in the middle of the workpiece to be drilled; after the two positioning blocks are fixed to the workpiece to be drilled, the workpiece to be drilled can be drilled by the machine tool drill bit, which improves the machining efficiency and machining quality.

[0069] The above-described specific embodiments of the invention further illustrate the purpose, technical solution, and beneficial effects of the invention. It should be understood that the above content is only for specific embodiments of the invention and is not intended to limit the scope of protection of the invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A method for machining internal threads, characterized in that, include: Each side of the workpiece has four side holes, and the top of the workpiece is curved. There is a slot between the two sides of the workpiece, which can be locked onto the first positioning block or the second positioning block. S1. Two fixed connecting plates are fastened to the workbench by the first positioning block and the second positioning block respectively; the fixed connecting plate has a fixing hole in the middle for installation in the groove of the workbench; the first positioning block has a first connecting hole in the vertical direction; when the first connecting hole corresponds to the fixing hole, the first positioning block is fixedly connected to the fixed connecting plate by a connector; the second positioning block has a second connecting hole in the vertical direction; when the second connecting hole corresponds to the fixing hole, the second positioning block is fixedly connected to the fixed connecting plate by a connector. S2. Place the slot of the workpiece to be drilled into the first positioning block; the top surface of the first positioning block is inclined, and the side surface has a first positioning hole. When the slot of the workpiece to be drilled is engaged in the first positioning block, and the side hole of the workpiece to be drilled corresponds to the first positioning hole, the workpiece to be drilled is connected to the first positioning block by the positioning component; the threaded bottom hole at the top of the arc part of the workpiece to be drilled is perpendicular to the worktable; the side of the workpiece to be drilled that is close to the top surface of the first positioning block and inclined upward is the processing side, and the top drill bit is used for drilling; after the two internal threaded holes on this side are drilled, the direction of the workpiece to be drilled is reversed to complete the drilling of the internal threaded holes on the other side. S3. Place the slot of the workpiece to be drilled into the second positioning block; the second positioning block has a second positioning hole on its side. When the slot of the workpiece to be drilled is engaged in the second positioning block and the side hole of the workpiece to be drilled corresponds to the second positioning hole, the workpiece to be drilled is connected to the second positioning block by the positioning component; the top surface of the second positioning block is a plane; the threaded bottom hole at the center of the top of the arc part of the workpiece to be drilled is perpendicular to the worktable; after connecting the second positioning block to the workpiece to be drilled, control the drill bit to drill the two internal threaded holes in the middle position.

2. The method for machining internal threads according to claim 1, characterized in that: The fixing hole is a threaded hole; Both the first connecting hole and the second connecting hole are threaded holes.

3. The method for machining internal threads according to claim 2, characterized in that: The first connecting hole includes a countersunk hole and a threaded through hole. The countersunk hole and the threaded through hole are arranged sequentially from the top to the bottom of the first positioning block. The countersunk hole and the threaded through hole are coaxial, and the diameter of the countersunk hole is larger than the diameter of the threaded through hole. The second connecting hole includes a countersunk hole and a threaded through hole, which are arranged sequentially from the top to the bottom of the second positioning block. The countersunk hole and the threaded through hole are coaxial, and the diameter of the countersunk hole is larger than the diameter of the threaded through hole.

4. The method for machining internal threads according to claim 3, characterized in that: The connector is a screw.

5. The method for machining internal threads according to claim 1, characterized in that: The first positioning block has two first positioning holes on its side, and the two first positioning holes are located at the same horizontal height on the side of the first positioning block.

6. The method for machining internal threads according to claim 1, characterized in that: The second positioning block has four second positioning holes on its side. Two second positioning holes form a group. Two positioning holes in any group are located at the same horizontal height on the side of the second positioning block. The two groups of positioning holes are located at different horizontal heights on the side of the second positioning block.

7. The method for machining internal threads according to claim 1, characterized in that: The positioning element is a pin.

8. The method for machining internal threads according to claim 1, characterized in that: The parallelism of the two sides of the first positioning block is no greater than 0.02 mm.

9. The method for machining internal threads according to claim 1, characterized in that: The parallelism of the two sides of the second positioning block is no greater than 0.02mm.

10. The method for machining internal threads according to claim 1, characterized in that: The groove of the worktable is a T-shaped groove.

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