Tapping machine and tapping method

Abstract

The invention provides a tapping machine and a tapping method, and relates to the technical field of tapping, and the tapping machine comprises a workbench, at least one carrier plate, an X-direction positioning clamp, a Y-direction positioning clamp, a Z-direction positioning clamp and a tapping mechanism. The workbench is provided with at least one tapping avoiding through hole extending transversely. The at least one carrying plate is arranged on the workbench, located on one side of the tapping avoiding through hole and used for carrying a workpiece. The X-direction positioning clamp is arranged on the workbench and used for clamping and positioning a workpiece located on the carrier plate in the X direction. The Y-direction positioning clamp is arranged on the workbench and used for clamping and positioning a workpiece located on the carrying plate in the Y direction. The Z-direction positioning clamp is arranged on the workbench and used for pressing and positioning the workpiece located on the carrying plate in the Z direction. The tapping mechanism is arranged below the workbench, and a tapping tool of the tapping mechanism can penetrate through the tapping avoiding through hole to tap the workpiece. Therefore, the tapping machine has the advantages of being high in qualified rate of tapping finished products and high in machining reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of tapping, and in particular to a tapping machine and a tapping method. Background Art

[0002] A tapping machine is a mechanical device commonly used to create internal threads on the surface of a workpiece. It is suitable for tapping through or blind holes in various parts, such as housings, flanges, nuts, and equipment end faces. Depending on the degree of automation and application scenario, this type of equipment is also known as a tapping machine, thread tapping machine, thread tapping machine, or automatic tapping machine.

[0003] Existing tapping equipment typically utilizes a one-way clamping or limiting mechanism, typically with a single-sided clamping device in the X-direction (i.e., front-to-back direction). During the tapping process, the workpiece is susceptible to shaking as the tapping tool rotates and cuts, especially when subjected to cutting forces and vibrations, causing the workpiece to sway up and down or side to side. This unstable clamping condition often leads to tapping position deviation, thread deformation, and even thread damage, resulting in poor processing quality or even scrap, seriously affecting processing efficiency and product qualification rate.

[0004] Therefore, a tapping machine and a tapping method with a high qualified rate of finished tapping products and strong processing reliability need to be designed. Summary of the Invention

[0005] The purpose of the present invention is to provide a tapping machine and a tapping method to address the defects and shortcomings of the existing technology, so as to solve at least one of the above technical problems. The tapping machine and the tapping method have the advantages of high qualified rate of finished tapping products and strong processing reliability.

[0006] To achieve the above object, the present invention provides a tapping machine, comprising: The workbench is provided with at least one transversely extending tapping avoidance through hole; At least one carrier plate is provided on the workbench and located on one side of the tapping avoidance through hole, and is used for carrying a workpiece; An X-direction positioning fixture is provided on the workbench and is used to clamp and position the workpiece on the carrier in the X direction; A Y-direction positioning fixture is provided on the workbench and is used to clamp and position the workpiece on the carrier plate in the Y direction; A Z-direction positioning fixture is provided on the workbench and is used to press and position the workpiece on the carrier plate in the Z direction; The tapping mechanism is arranged below the workbench, and the tapping tool thereof can pass through the tapping avoidance through hole to tap the workpiece.

[0007] Optionally, the Z-direction positioning fixture includes: At least one fixed hole carrier block, which is arranged on the workbench at intervals, on the side of the carrier plate close to the tapping avoidance through hole. A positioning hole is provided on the fixed hole carrier block, and the positioning hole is directly above the tapping avoidance through hole; A pressing mechanism is arranged on the side of the tapping avoidance through hole away from the carrier plate. Its output end is connected with a pressing block corresponding to the fixed hole carrier block. A counterposition hole for cooperating with the positioning hole is provided on the pressing block; A propulsion mechanism is arranged on the workbench and is used to push the pressing mechanism to move along the extending direction of the tapping avoidance through hole, so that when the pressing block presses down, the workpiece is pressed on the fixed hole carrier block, and the tapping hole to be tapped on the workpiece is aligned with the counterposition hole and the positioning hole, thereby realizing Z-direction positioning.

[0008] Optionally, the workbench is provided with a slide rail parallel to the tapping avoidance through hole on the side of the tapping avoidance through hole away from the carrier plate; The pressing mechanism includes a fixed long plate and a first cylinder fixedly installed on the fixed long plate; a slider cooperating with the slide rail is arranged below the fixed long plate; The propulsion mechanism is a second cylinder, and its output end is connected with the fixed long plate and is used to drive the fixed long plate to move along the slide rail.

[0009] Optionally, the pressing mechanism further includes: A heightening bracket fixedly installed on the fixed long plate; Guide columns installed on the fixed long plate and located on both sides of the heightening bracket; A pressure rod installed at the output end of the first cylinder and slidably cooperating with the guide columns; The first cylinder is installed on the heightening bracket; The pressing block is installed on the pressure rod in an X-direction adjustable manner and is used to adjust the position of the counterposition hole in the X direction.

[0010] Optionally, the fixed hole carrier block includes a base section installed on the workbench and a positioning and bearing section extending towards the tapping avoidance through hole arranged on the base section; The positioning hole is provided on the bearing section; The base section is arranged on the workbench so as to be movable in the X direction and / or the Y direction to realize the position adjustment of the positioning hole.

[0011] Optionally, the X-direction positioning fixture includes: A first stop block arranged on the workbench, on the side of the carrier plate close to the tapping avoidance through hole, and adjustable in the X direction, and is used to limit the position of the workpiece in the X direction; The first pushing mechanism is arranged on a side of the carrier plate away from the tapping avoidance through hole, and is used to push the workpiece toward the first stop block and make it abut against the first stop block, thereby achieving X-axis clamping and positioning.

[0012] Optionally, the Y-axis positioning fixture includes: a second stopper, provided on the workbench, located on one side of the carrier plate in the Y direction, and adjustable along the Y direction, for limiting the position of the workpiece in the Y direction; The second pushing mechanism is located on the other side of the carrier plate in the Y direction, and is used to push the workpiece toward the second stop block and make it abut against the second stop block, thereby achieving Y-axis clamping and positioning.

[0013] Optionally, the two tapping avoidance through holes are arranged side by side on the workbench at intervals along the Y direction; At least two of the carrier plates are symmetrically arranged on both sides of the two tapping avoidance through holes; The Z-direction positioning fixture is arranged between the two tapping avoidance through holes and is used to perform Z-direction pressing and positioning on the workpieces on the carrier plates on both sides thereof; The X-direction positioning fixtures corresponding to the number of the carrier plates are symmetrically arranged on both sides of the Z-direction positioning fixture; The Y-direction positioning fixtures corresponding to the number of the carrier plates are symmetrically arranged on both sides of the Z-direction positioning fixture.

[0014] Optionally, the tapping machine further comprises a frame and a control box mounted on a side of the frame, the workbench is mounted on the frame, and the X-direction positioning fixture, the Y-direction positioning fixture, the Z-direction positioning fixture and the tapping mechanism are all electrically connected to the control box; The tapping mechanism comprises: A servo motor is mounted on the frame. A servo feed power head is mounted on the frame and is in driving connection with the output end of the servo motor; The multi-axis device is connected to the servo feed power head through a multi-axis device joint, and the multi-axis device is provided with a plurality of tapping tools along the Y direction.

[0015] Another aspect of the present invention provides a tapping method, using the tapping machine described above, comprising the following steps: S1. Place the workpiece on the carrier; S2. Clamp and position the workpiece in the X direction using an X-direction positioning fixture; S3, clamping and positioning the workpiece in the Y direction using a Y-positioning fixture; S4, pressing and positioning the workpiece in the Z direction by using a Z-direction positioning fixture; S5. Drive the tapping mechanism so that the tapping tool on it passes through the tapping avoidance through-hole and taps the through-hole on the workpiece. S6. After the tapping is completed, withdraw the tapping tool from the workpiece. S7. Release the clamping of the Z-direction positioning fixture. S8. Release the clamping of the Y-direction positioning fixture. S9. Release the clamping of the X-direction positioning fixture. S10. Take out the processed workpiece from the carrier plate.

[0016] Compared with the prior art, the advantages of this application are as follows: Since this tapping machine is provided with X-direction, Y-direction and Z-direction positioning fixtures, stable clamping of the workpiece in three directions can be achieved, effectively avoiding the shaking of the workpiece during the tapping process, significantly improving the clamping stability, thereby reducing problems such as thread buckle defects, eccentricity or slipping caused by offset or vibration, ensuring the quality consistency of thread processing, and improving the qualified rate of finished products and processing reliability. At the same time, the tapping mechanism is arranged below the workbench, and the tool taps from bottom to top, which is beneficial to chip removal and improves processing stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the present invention; Figure 2 It is a top-view structural schematic diagram of an embodiment of the present invention; Figure 3 It is a partial exploded schematic diagram of an embodiment of the present invention; Figure 4 For Figure 3 It is a partial enlarged view at A in Figure 5 For Figure 3 It is a partial enlarged view at B in Figure 6 It is a partial exploded schematic diagram of an embodiment of the present invention; Figure 7 It is a structural schematic diagram of the fixed-hole carrier block of an embodiment of the present invention; Figure 8 It is a structural schematic diagram of the pressing mechanism of an embodiment of the present invention from one perspective; Figure 9 For Figure 8Partial enlarged view at C in the [drawing]; Figure 10 Structural schematic diagram of the pressing mechanism of the embodiment of the present invention from another perspective; Figure 11 Structural schematic diagram of the tapping mechanism of the embodiment of the present invention; Figure 12 Process flow chart of a tapping method of the embodiment of the present invention.

[0019] Explanation of reference numerals in the drawings 100 - tapping machine; 1 - frame; 2 - workbench; o1 - tapping avoidance through hole; 21 - spacer block; 22 - slide rail; o2 - second screw hole; 3 - carrier plate; a - notch; 4 - X - direction positioning fixture; 41 - first stop block; 42 - third cylinder; 43 - first push plate; 5 - Y - direction positioning fixture; 51 - second stop block; 52 - fourth cylinder; 53 - second push plate; 6 - Z - direction positioning fixture; 61 - fixed hole carrier block; 611 - base section; o3 - second waist - shaped hole; 612 - connecting section; 613 - bearing section; o4 - positioning hole; 62 - pressing mechanism; 621 - fixed long plate; 622 - slider; 623 - first cylinder; 624 - pressing block; o5 - first waist - shaped hole; o6 - alignment hole; 625 - heightening support; 626 - guide post; 627 - pressing rod; o7 - first screw hole; 63 - second cylinder; 7 - tapping mechanism; 71 - servo motor; 72 - servo feed power head; 73 - multi - spindle adapter; 74 - multi - spindle; 741 - arranged structure; 75 - tapping tool; 8 - control box; 200 - workpiece; o8 - hole to be tapped. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] It should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "back", "side", "circumferential", etc. of the present invention is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms such as "first" and "second" are only used to distinguish multiple components or structures with the same or similar structures, and do not represent a special limitation on the setting order or connection relationship.

[0022] Please refer to Figures 1 to 12 , an embodiment of the present invention provides a tapping machine 100 for machining an internal thread on the surface of a tapping hole o8 of a workpiece 200. The tapping machine 100 includes: a workbench 2, at least one carrier plate 3, an X-direction positioning fixture 4, a Y-direction positioning fixture 5, a Z-direction positioning fixture 6, and a tapping mechanism 7.

[0023] As Figure 1 shown, the reference directions are defined as follows: taking the width direction of the workbench 2 as the X direction, the length direction as the Y direction, and the height direction as the Z direction.

[0024] The workbench 2 is used to carry each component and provide machining support. There is at least one laterally extending tapping avoidance through hole o1 provided thereon. The tapping avoidance through hole o1 allows a tapping tool 75 to pass through to tap the workpiece 200. The workbench 2 needs to have sufficient structural strength and rigidity to ensure the stability of the entire machining process.

[0025] In this embodiment, the workbench 2 is provided with two tapping avoidance through holes o1 arranged side by side at intervals in the Y direction. Of course, in other embodiments, the number of through holes can be one, three or more, and the arrangement direction can be the Y direction or the X direction. The specific number and arrangement are not limited.

[0026] At least one carrier plate 3 is arranged on the workbench 2, on one side of the tapping avoidance through hole o1, for carrying the workpiece 200. Taking this embodiment as an example, four carrier plates 3 are provided and can be fixed to a cushion block 21 arranged on the workbench 2 by screws, so as to obtain a certain height, which is convenient for placing the workpiece 200 and subsequent machining. The number of carrier plates 3 can be adjusted according to needs and is not limited.

[0027] The X-direction positioning fixture 4 is arranged on the workbench 2 and is used to clamp and position the workpiece 200 located on the carrier plate 3 in the X direction; to ensure the positioning accuracy and clamping stability of the workpiece 200 in the X direction.

[0028] The Y-direction positioning fixture 5 is arranged on the workbench 2 and is used for clamping and positioning the workpiece 200 located on the carrier plate 3 in the Y direction; further improving its stability in the Y direction and preventing lateral offset during the machining process.

[0029] The Z-direction positioning fixture 6 is arranged on the workbench 2 and is used for pressing and positioning the workpiece 200 located on the carrier plate 3 in the Z direction; to prevent the workpiece 200 from floating up and down during the machining process, thereby enhancing the overall machining accuracy.

[0030] The tapping mechanism 7 is arranged below the workbench 2, and its tapping tool 75 can pass through the tapping avoidance through hole o1 to tap the workpiece 200. This setting scheme is conducive to the smooth discharge of chips generated during the machining process and improves the stability and reliability of tapping.

[0031] In this way, by setting the positioning fixtures in the X, Y, and Z directions, stable clamping of the workpiece 200 in three directions can be achieved, and at the same time, the tapping hole o8 of the workpiece 200 is located at the tapping position, effectively avoiding the shaking of the workpiece 200 during the tapping process, significantly improving the clamping stability, thereby reducing problems such as poor thread, eccentricity, or slipping of the thread caused by offset or vibration, ensuring the quality consistency of thread machining, and improving the qualified rate of the finished product and the machining reliability. At the same time, the tapping mechanism 7 is arranged below the workbench 2, and the tool taps from bottom to top, which is conducive to chip removal and improves the machining stability.

[0032] In order to achieve precise positioning and reliable pressing of the workpiece 200 in the Z direction, optionally, please refer to Figure 1 , Figures 3 to 10 In this embodiment, the Z-direction positioning fixture 6 includes: at least one fixed-hole carrier block 61, a pressing mechanism 62, and a propulsion mechanism.

[0033] Among them, at least one fixed-hole carrier block 61 is arranged on the workbench 2 at intervals and is located on one side of the carrier plate 3 close to the tapping avoidance through hole o1. In this embodiment, a plurality of fixed-hole carrier blocks 61 are respectively arranged on both sides of the pressing mechanism 62, for example, ten are arranged on each side, for supporting a plurality of workpieces 200 to be machined. Of course, in other embodiments, the fixed-hole carrier block 61 can also be arranged only on one side of the pressing mechanism 62, and the quantity is not limited either.

[0034] The fixed-hole carrier block 61 is provided with a positioning hole o4, and the positioning hole o4 is located directly above the tapping avoidance through hole o1. That is, a part of the fixed-hole carrier block 61 is located directly above the tapping avoidance through hole o1, and the upper end surface of a part of the fixed-hole carrier block 61 is used to carry the area of the workpiece 200 with the tapping hole o8. Thereby providing through-hole guidance for the tapping tool and positioning reference for the workpiece 200.

[0035] The pressing mechanism 62 is arranged on the side of the tapping avoidance through hole o1 away from the carrier plate 3, and its output end is connected with a pressing block 624 corresponding to each fixed hole carrier block 61. The pressing block 624 is provided with a positioning hole o6 for cooperating with the positioning hole o4 to assist in positioning the tapping hole o8 of the workpiece 200.

[0036] The pushing mechanism is arranged on the workbench 2 and is used to push the pressing mechanism 62 to move along the extending direction of the tapping avoidance through hole o1, so that when the pressing mechanism 62 presses down the pressing block 624, the workpiece 200 is pressed on the fixed hole carrier block 61, and the tapping hole o8 on the workpiece 200 is aligned with the positioning hole o6 and the positioning hole o4, thereby realizing the Z-direction positioning. It can be understood that before the pressing mechanism 62 presses down, the pushing mechanism first pushes the pressing mechanism 62 to reach the preset position, and the driving end of the pressing mechanism 62 drives the pressing block 624 to press down, so as to press the workpiece 200 on the fixed hole carrier block 61, and the tapping hole o8 on the workpiece 200 is aligned with the positioning hole o6 and the positioning hole o4, thereby realizing the Z-direction positioning.

[0037] Through the cooperation of the above structures, not only can the stable pressing of the workpiece 200 in the Z direction be realized, but also the precise alignment of the tapping hole during the tapping process is ensured, improving the consistency of the tapping quality and the processing reliability.

[0038] In order to realize the stable and controllable linear movement of the pressing mechanism 62, optionally, please refer to Figure 3 、 Figure 6 and Figure 10 , in this embodiment, the workbench 2 is provided with a slide rail 22 parallel to the tapping avoidance through hole o1 on the side of the tapping avoidance through hole o1 away from the carrier plate 3. Specifically, in this embodiment, the slide rail 22 is arranged at the positions of two tapping avoidance through holes o1 spaced apart in the Y direction.

[0039] The pressing mechanism 62 includes a fixed long plate 621 and a first cylinder 623 fixedly installed on the fixed long plate 621. A slider 622 cooperating with the slide rail 22 is arranged below the fixed long plate 621 for guiding the pressing mechanism 62 to move smoothly along the direction of the slide rail 22.

[0040] The pushing mechanism is a second cylinder 63, and its output end is connected to the fixed long plate 621 for driving the pressing mechanism 62 to move on the workbench 2 along the slide rail 22, realizing the alignment and positioning of the pressing mechanism 62 at different processing positions.

[0041] In other alternative embodiments, the pushing mechanism can also be replaced by a driving motor, which cooperates with a gear and rack mechanism to drive the fixed long plate 621 to move along the slide rail 22, thereby realizing the same movement control effect. No specific limitation is made here.

[0042] In order to further improve the stability and adjustment flexibility of the pressing mechanism 62, optionally, please refer to Figure 8and Figure 9 In this embodiment, the pressing mechanism 62 further includes: a heightening bracket 625, a guiding column 626, and a pressing rod 627.

[0043] Among them, the heightening bracket 625 is fixedly installed on the fixed long plate 621 and is used to support the first cylinder 623, and the first cylinder 623 is installed on the heightening bracket 625.

[0044] The guiding column 626 is installed on the fixed long plate 621 and is located on both sides of the heightening bracket 625, and is used to provide guidance for the up and down movement of the pressing rod 627, so as to improve the smoothness and accuracy of the pressing action.

[0045] The pressing rod 627 is installed at the output end of the first cylinder 623 and is slidably matched with the guiding column 626, and can move up and down along the Z direction under the drive of the first cylinder 623.

[0046] In order to realize the precise adjustment of the position of the pressing block 624, the pressing block 624 is installed on the pressing rod 627 in an X-direction adjustable manner and is used to adjust the position of the alignment hole o6 in the X direction. Specifically, a first screw hole o7 is provided on the upper end surface of the pressing rod 627, and a first waist-shaped hole o5 extending in the X direction is provided on the pressing block 624. In this way, through the cooperation of the first screw hole o7, the first waist-shaped hole o5, and the screw, the adjustment of the position of the pressing block 624 in the X direction can be realized.

[0047] Optionally, pressing blocks 624 are installed on both sides of the pressing rod 627, so that the workpieces 200 on the carrier plates 3 on both sides of the pressing mechanism 62 can be pressed simultaneously, thereby improving work efficiency.

[0048] In order to solve the problem that the positioning hole o4 of the fixed-hole carrier block 61 cannot adapt to the through-hole positions of different workpieces 200, optionally, please refer to Figure 6 and Figure 7 In this embodiment, the fixed-hole carrier block 61 includes a base section 611 and a bearing section 613. The base section 611 is used to be installed on the workbench 2 to realize the installation and fixation of the fixed-hole carrier block 61. The bearing section 613 is arranged on the base section 611 and extends towards the tapping avoidance through-hole o1, and its upper end surface is used to bear the workpiece 200. A positioning hole o4 is provided on the bearing section 613. Specifically, in this embodiment, the fixed-hole carrier block 61 further includes a connecting section 612 that connects the base section 611 and the bearing section 613 and is vertically arranged.

[0049] In this embodiment, the base section 611 is movably disposed on the workbench 2 along the X and Y directions to adjust the position of the positioning hole o4. Specifically, a plurality of second screw holes o2 are provided at intervals along the X direction on the upper end surface of the workbench 2, and a plurality of second waist-shaped holes o3 extending along the Y direction are provided at intervals along the X direction on the base section 611 of the fixed hole carrier block 61; thus, through the cooperation of the second screw holes o2, the second waist-shaped holes o3, and the screws, the adjustment of the position of the base section 611 in the X and Y directions can be achieved. Of course, the base section 611 can also be disposed on the workbench 2 to move only along the X direction or only along the Y direction by setting the extending direction of the second waist-shaped holes o3 and the setting direction of the second screw holes o2.

[0050] To achieve the X-direction positioning and clamping of the workpiece 200, optionally, please refer to Figure 4 and Figure 6 , in this embodiment, the X-direction positioning fixture 4 includes a first stop block 41 and a first feeding mechanism.

[0051] The first stop block 41 is disposed on the workbench 2, on the side of the carrier plate 3 close to the tapping avoidance through hole o1, and is adjustable along the X direction for defining the position of the workpiece 200 in the X direction. Specifically, in this embodiment, the first stop block 41 is generally L-shaped, the horizontal section is used to connect with the workbench 2, and the vertical section is used to limit the workpiece 200. It can be understood that the adjustment of the position of the first stop block 41 along the X direction can also be achieved by setting screw holes on the workbench 2 and waist-shaped holes on the horizontal section of the first stop block 41, which will not be elaborated here.

[0052] The first feeding mechanism is disposed on the side of the carrier plate 3 away from the tapping avoidance through hole o1 for pushing the workpiece 200 towards the first stop block 41 and making it abut against the first stop block 41, thereby achieving X-direction clamping and positioning. Specifically, the first feeding mechanism is a third cylinder 42, and its output end is connected to a first push plate 43. The driving of the output end of the third cylinder 42 makes the first push plate 43 push the workpiece 200 to move towards the direction close to the tapping avoidance through hole o1 and press tightly against the first stop block 41. Further, a notch a for avoiding the advancement of the carrier plate 3 is provided at the position of the carrier plate 3 corresponding to the first push plate 43, so that the pushing stroke of the first feeding mechanism is longer.

[0053] Through the above structure, the workpiece 200 can be reliably positioned and clamped in the X direction, ensuring the tapping position accuracy and improving the positioning efficiency and automation degree.

[0054] To achieve the Y-direction positioning and clamping of the workpiece 200, optionally, please refer to Figure 6 , in this embodiment, the Y-direction positioning fixture 5 includes a second stop block 51 and a second feeding mechanism.

[0055] The second stop block 51 is arranged on the workbench 2, on one side of the carrier plate 3 in the Y direction, and can be adjusted in the Y direction, and is used to limit the position of the workpiece 200 in the Y direction. Specifically, in this embodiment, the second stop block 51 is generally L-shaped, the horizontal section is used to connect with the workbench 2, and the vertical section is used to limit the workpiece 200. It can be understood that the adjustment of the position of the second stop block 51 in the Y direction can also be realized by arranging screw holes on the workbench 2 and arranging waist-shaped holes on the horizontal section of the second stop block 51, which will not be elaborated here.

[0056] The second feeding mechanism is located on the other side of the carrier plate 3 in the Y direction, and is used to push the workpiece 200 towards the second stop block 51 and make it abut against the second stop block 51, so as to realize clamping and positioning in the Y direction. Specifically, the second feeding mechanism is the fourth cylinder 52, and its output end is connected with a second push plate 53. The driving of the output end of the fourth cylinder 52 makes the second push plate 53 push the workpiece 200 towards the second stop block 51 and press tightly against the second stop block 51.

[0057] Through the above structure, the workpiece 200 can be reliably positioned and clamped in the Y direction, ensuring the tapping position accuracy and improving the positioning efficiency and automation degree.

[0058] To improve the tapping efficiency and realize multi-station parallel processing, optionally, please refer to Figure 2 and Figure 6 , in this embodiment, two tapping avoidance through holes o1 are arranged side by side at intervals in the Y direction on the workbench 2; four carrier plates 3 are symmetrically arranged on both sides of the two tapping avoidance through holes o1; the Z-direction positioning fixture 6 is arranged between the two tapping avoidance through holes o1 and is used to press and position the workpiece 200 on the carrier plates 3 on both sides of it in the Z direction; four X-direction positioning fixtures 4 are symmetrically arranged on both sides of the Z-direction positioning fixture 6. Four Y-direction positioning fixtures 5 are symmetrically arranged on both sides of the Z-direction positioning fixture 6. Of course, in some other embodiments, the number of the carrier plates 3, X-direction positioning fixtures 4, and Y-direction positioning fixtures 5 can also be two, six or more, which will not be specifically limited here. In this way, double-station or multi-station parallel processing can be realized to improve the tapping efficiency.

[0059] Optionally, please refer to Figure 1 , Figure 3 and Figure 11 , in this embodiment, the tapping machine 100 further includes a frame 1 and a control box 8 installed on the side of the frame 1. The workbench 2 is installed on the frame 1, and the X-direction positioning fixture 4, Y-direction positioning fixture 5, Z-direction positioning fixture 6 and the tapping mechanism 7 are all electrically connected to the control box 8. Specifically, the control box 8 is electrically connected to the first cylinder 623, second cylinder 63, third cylinder 42, fourth cylinder 52 and the tapping mechanism 7 respectively, and is used to control their movements to realize automatic tapping operation.

[0060] Optionally, the tapping mechanism 7 includes a servo motor 71, a servo feed head 72, a multi-spindle joint 73, a multi-spindle 74, and a plurality of tapping tools 75. The servo motor 71 is mounted on the frame 1 and is used to provide high-precision, high-responsiveness spindle drive power. The servo feed head 72 is mounted on the frame 1 and is in transmission connection with the output end of the servo motor 71. The multi-spindle 74 is connected to the servo feed head 72 via the multi-spindle joint 73, and a plurality of tapping tools 75 are arranged on the multi-spindle 74 along the Y direction.

[0061] Specifically, the multi-axis device 74 has a horizontally arranged structure 741 arranged along the Y direction, and is internally provided with multiple parallel gear transmission pairs (not shown in the figure), which can synchronously distribute the power of the main shaft (not shown in the figure) to multiple tapping tools 75.

[0062] Optionally, multiple tapping tools 75 are spaced along the Y-axis at the output end of the multi-spindle assembly 74. Each tool can be quickly replaced via threaded or spring-loaded mounting. Depending on the machining requirements of the workpiece 200, the tapping tools 75 can be installed at different locations on the multi-spindle assembly 74, allowing the tools 75 to correspond with the holes o8 to be tapped at different locations on the workpiece 200, completing the tapping operation at the corresponding locations. Furthermore, the diameter and thread profile of the tapping tools 75 can be customized based on the workpiece 200 requirements to accommodate threaded holes of varying sizes.

[0063] Please refer to Figure 11 The embodiment of the present invention provides a tapping method, using the tapping machine as described above, comprising the following steps: S1. Place the workpiece on the carrier; S2. Clamp and position the workpiece in the X direction using an X-direction positioning fixture; S3, clamping and positioning the workpiece in the Y direction using a Y-positioning fixture; S4, pressing and positioning the workpiece in the Z direction by using a Z-direction positioning fixture; S5, driving the tapping mechanism so that the tapping tool on the mechanism passes through the tapping avoidance through hole and taps the through hole on the workpiece; S6. After completing the tapping, the tapping tool is withdrawn from the workpiece; S7, release the clamping of the Z-axis positioning fixture; S8, release the clamping of the Y-axis positioning fixture; S9, release the clamping of the X-axis positioning fixture; S10, taking out the processed workpiece from the carrier plate.

[0064] Since this tapping method is completed using the tapping machine introduced above, it includes all the structures of the tapping machine, as well as the connection relationship and position relationship characteristics. Therefore, it has all the advantages of the tapping machine and will not be elaborated here.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A tapping machine, characterized in that, Comprising: A workbench provided with at least one tapping avoidance through-hole extending horizontally; At least one carrier plate disposed on the workbench, on one side of the tapping avoidance through-hole, for carrying a workpiece; An X-direction positioning fixture disposed on the workbench for clamping and positioning the workpiece on the carrier plate in the X direction; A Y-direction positioning fixture disposed on the workbench for clamping and positioning the workpiece on the carrier plate in the Y direction; A Z-direction positioning fixture disposed on the workbench for pressing and positioning the workpiece on the carrier plate in the Z direction; A tapping mechanism disposed below the workbench, and its tapping tool can pass through the tapping avoidance through-hole to tap the workpiece.

2. The tapping machine according to claim 1, characterized in that, The Z-direction positioning fixture includes: At least one fixed-hole carrier block spacedly disposed on the workbench, on one side of the carrier plate close to the tapping avoidance through-hole, and the fixed-hole carrier block is provided with a positioning hole, and the positioning hole is directly above the tapping avoidance through-hole; A pressing mechanism disposed on the side of the tapping avoidance through-hole away from the carrier plate, and its output end is connected with a pressing block corresponding to the fixed-hole carrier block, and the pressing block is provided with a counter-positioning hole for cooperating with the positioning hole; A pushing mechanism disposed on the workbench for pushing the pressing mechanism to move along the extending direction of the tapping avoidance through-hole, so that when the pressing block presses down, the workpiece is pressed on the fixed-hole carrier block, and the tapping hole to be tapped on the workpiece is aligned with the counter-positioning hole and the positioning hole, thereby realizing Z-direction positioning.

3. The tapping machine according to claim 2, wherein, The workbench is provided with a slide rail parallel to the tapping avoidance through-hole on the side of the tapping avoidance through-hole away from the carrier plate; The pressing mechanism includes a fixed long plate and a first air cylinder fixedly installed on the fixed long plate; a slider cooperating with the slide rail is disposed below the fixed long plate; The pushing mechanism is a second air cylinder, and its output end is connected with the fixed long plate for driving the fixed long plate to move along the slide rail.

4. The tapping machine according to claim 3, characterized in that, The pressing mechanism further includes: A heightening bracket fixedly installed on the fixed long plate; Guide columns installed on the fixed long plate and located on both sides of the heightening bracket; A pressing rod installed on the output end of the first air cylinder and slidably cooperating with the guide columns; The first air cylinder is installed on the heightening bracket; The pressing block is adjustably installed on the pressing rod in the X direction for adjusting the position of the counter-positioning hole in the X direction.

5. The tapping machine according to claim 3, wherein The fixed-hole carrier block includes a base section installed on the workbench and a positioning and carrying section extending towards the tapping avoidance through-hole provided on the base section; The carrying section is provided with the positioning hole; The base section is movably disposed on the workbench in the X direction and / or the Y direction to realize the position adjustment of the positioning hole.

6. The tapping machine according to claim 1, wherein, The X-direction positioning fixture includes: A first stop block disposed on the workbench, on one side of the carrier plate close to the tapping avoidance through-hole and adjustable in the X direction, for limiting the position of the workpiece in the X direction; A first material pushing mechanism disposed on the side of the carrier plate away from the tapping avoidance through-hole for pushing the workpiece towards the first stop block and making it abut against the first stop block, thereby realizing X-direction clamping and positioning.

7. The tapping machine according to claim 1, wherein, The Y-direction positioning fixture includes: a second stopper, provided on the workbench, located on one side of the carrier plate in the Y direction, and adjustable along the Y direction, for limiting the position of the workpiece in the Y direction; The second pushing mechanism is located on the other side of the carrier plate in the Y direction, and is used to push the workpiece toward the second stop block and make it abut against the second stop block, thereby achieving Y-axis clamping and positioning.

8. The tapping machine according to any one of claims 1 to 7, characterized in that: The two tapping avoidance through holes are arranged side by side on the workbench at intervals along the Y direction; At least two of the carrier plates are symmetrically arranged on both sides of the two tapping avoidance through holes; The Z-direction positioning fixture is arranged between the two tapping avoidance through holes and is used to perform Z-direction pressing and positioning on the workpieces on the carrier plates on both sides thereof; The X-direction positioning fixtures corresponding to the number of the carrier plates are symmetrically arranged on both sides of the Z-direction positioning fixture; The Y-direction positioning fixtures corresponding to the number of the carrier plates are symmetrically arranged on both sides of the Z-direction positioning fixture.

9. The tapping machine according to claim 8, characterized in that, It also includes a frame and a control box installed on the side of the frame, the workbench is installed on the frame, and the X-axis positioning fixture, the Y-axis positioning fixture, the Z-axis positioning fixture and the tapping mechanism are all electrically connected to the control box; The tapping mechanism comprises: A servo motor is mounted on the frame. A servo feed power head is mounted on the frame and is in driving connection with the output end of the servo motor; The multi-axis device is connected to the servo feed power head through a multi-axis device joint, and the multi-axis device is provided with a plurality of tapping tools along the Y direction.

10. A tapping method, characterized in that, The use of the tapping machine according to any one of claims 1 to 9 comprises the following steps: S1. Place the workpiece on the carrier; S2. Clamp and position the workpiece in the X direction using an X-direction positioning fixture; S3, clamping and positioning the workpiece in the Y direction using a Y-positioning fixture; S4, pressing and positioning the workpiece in the Z direction by using a Z-direction positioning fixture; S5, driving the tapping mechanism so that the tapping tool on the mechanism passes through the tapping avoidance through hole and taps the through hole on the workpiece; S6. After completing the tapping, the tapping tool is withdrawn from the workpiece; S7, release the clamping of the Z-axis positioning fixture; S8, release the clamping of the Y-axis positioning fixture; S9, release the clamping of the X-axis positioning fixture; S10, taking out the processed workpiece from the carrier plate.

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