Processing positioning device and processing system for a carabiner

Abstract

This utility model discloses a machining positioning device and machining system for a lock hook. The device includes a base plate; horizontally distributed pads are provided at the middle and right end of the top surface of the base plate; a pad plate is provided at the left and right ends of the top of the pads; a horizontally distributed backing plate is provided at the left end of the top surface of the base plate; the backing plate is located behind the pads and is parallel to them; a support block is provided at the front left of the top of the base plate; the front part of a longitudinally distributed eccentric shaft is placed on the top of the support block; the rear part of the eccentric shaft is inserted into the lower left part of the backing plate; a rotating handle is provided at the front end of the eccentric shaft; the middle part of the inclined pressure plate is hinged to the upper left corner of the pad; a vertically distributed long double-ended bolt is provided at the rear right end of the base plate; a small pressure plate is provided above the long double-ended bolt. This utility model can conveniently and reliably position the lock hook blank to be machined, ensuring positioning accuracy, which is beneficial for further accurate machining of the lock hook through groove on the lock hook blank.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a machining positioning device and machining system for a lock hook. Background Technology

[0002] Switches are important devices for track switching and are widely used on railway lines. When locomotives and rolling stock enter or leave a station, they need to switch from one track to another. At the track switching point, a switch machine changes the position of the switch rail (or frog rail) from one position to another, thereby enabling the vehicle to change tracks.

[0003] A switch machine is an important signaling infrastructure device used to reliably change the position of a turnout, change the direction of the turnout, lock the turnout switch rail, and reflect the position of the turnout.

[0004] A locking device is installed between the switch rail (or frog rail) and the stock rail of a turnout. After the switch machine drives the switch rail into position, the locking device on the outside of the switch machine (also known as the external locking device) locks the switch rail (or frog rail) and the stock rail, thus ensuring that the train can pass smoothly. If the switch rail and the stock rail do not fit tightly, it will cause the vehicle to become unstable or even derail, resulting in a serious safety accident.

[0005] See Figures 3a to 3d , Figure 4 The locking hook 1 is an important component in the external locking device. The finished, machined locking hook 1 has an irregular flat hook shape. The head 101 of the locking hook is slightly wider than its middle and tail, so its head is heavier. The upper half of the locking hook head 101 is provided with a horizontally penetrating upper locking hook groove 102. The lower right side of the locking hook head 101 is provided with a head side positioning surface 106. The upper end face of the middle part of the locking hook 1 is provided with a pressing surface 103. The lower end of the middle and right parts of the locking hook 1 is provided with a lower end positioning surface 104. The tail of the locking hook 1 is provided with a tail end 105. The lower side of the locking hook head 101 is provided with a supporting inclined surface 107. The upper left side of the locking hook head 101 is provided with a locking hook head positioning surface 108. See also Figures 1a to 1d , Figure 2 As shown, in order to machine the upper through groove 102 of the lock hook on the lock hook blank 100 to obtain the finished lock hook 1 (the lock hook blank 100 and the finished lock hook 1 are basically the same, the only difference is that there is no upper through groove 102 of the lock hook, and the rest are the same), the current processing technology requires: positioning with the lock hook head positioning surface 108, head side positioning surface 106 and lower end positioning surface 104 on the lock hook blank 100, and then performing the machining operation of the upper through groove 102 of the lock hook.

[0006] Since the lower positioning surface 104 of the lock hook blank 100 is located in the middle and rear part of the lock hook blank 100, if the lower positioning surface 104 is used to position and support the lock hook blank 100, then the head of the lock hook blank 100 will inevitably be unstable, and there is a risk of it falling off the existing processing positioning device. At this time, it is necessary to add a support point under the head to ensure the balance of the lock hook blank 100. However, if a fixed support is used to support the workpiece's support slope 107, the relative positions of the support slope 107 and the lower positioning surface 104 will differ because each workpiece has a processing dimensional tolerance. If two fixed positioning structures are selected, one of them will inevitably be ineffective, thus losing the purpose of positioning.

[0007] Therefore, there is an urgent need to develop a technology that can solve the above-mentioned technical problems. Utility Model Content

[0008] The purpose of this utility model is to address the technical deficiencies of the existing technology by providing a processing and positioning device and processing system for a lock hook.

[0009] Therefore, this utility model provides a processing and positioning device for a lock hook, characterized in that it includes a horizontally distributed base plate; The top surface of the base plate has horizontally distributed pads in the middle and right end; A pad is provided at each of the left and right ends of the top of the pad block; A horizontally distributed backing plate is provided on the top left end of the base plate; The backing plate is located behind the pad and is set parallel to the pad. A support block is provided at the top left front end of the base plate; The front of the support block is fitted with longitudinally distributed eccentric shafts. The rear part of the eccentric shaft is inserted into the lower left part of the back plate; A rotating handle is provided at the front end of the eccentric shaft; The middle part of the inclined pressure plate is hinged to the upper left corner of the pad; The bottom plate has vertically distributed long double-headed bolts at its right rear end; A small pressure plate is provided on the upper part of the long double-ended bolt.

[0010] In addition, this utility model also provides a machining system for a lock hook, which includes a machining and positioning device for the lock hook as described above, and a vertical milling machine; A vertical milling machine is used to machine the through groove on the lock hook blank using a ball end mill to obtain the finished lock hook.

[0011] As can be seen from the technical solution provided by this utility model above, compared with the prior art, this utility model provides a machining positioning device and machining system for a lock hook. The design is scientific and can conveniently and reliably position the lock hook blank to be machined, ensuring the stability of the workpiece clamping and the accuracy of the positioning. This facilitates the accurate machining operation of the through groove on the lock hook blank, ensuring the machining accuracy of the through groove on the lock hook, and has significant practical significance. Attached Figure Description

[0012] Figures 1a to 1d These are the front view, left view, right view, and top view of the lock hook blank before processing; Figure 2 This is a three-dimensional view of the lock hook blank before processing; Figures 3a to 3d These are the front view, left view, right view, and top view of the finished lock hook obtained after processing; Figure 4 It is a three-dimensional view of the finished lock hook obtained after processing; Figure 5 shows the front view, left view, right view and top view of a locking hook processing and positioning device provided by this utility model when the locking hook blank is not clamped. Figure 6 This utility model provides a three-dimensional view of a lock hook processing and positioning device when the lock hook blank is not clamped. Figures 7a to 7d These are, respectively, the front view, left view, right view and top view of the processing and positioning device for a lock hook provided by this utility model when clamping the lock hook blank to be processed; Figure 8 This utility model provides a three-dimensional view of a lock hook processing and positioning device when clamping a lock hook blank to be processed. Figures 9a to 9d These are, respectively, a front view, left view, right view and top view of a lock hook processing and positioning device provided by this utility model, and a finished lock hook obtained by processing; Figure 10 Based on the processing and positioning device for a lock hook provided by this utility model, a three-dimensional view of the finished lock hook is obtained; Figure 11a This is a top view of the base plate; Figure 11b It is along Figure 11a A cross-sectional view of the BB line shown; Figure 12a and Figure 12b These are the first and second three-dimensional views of the base plate; Figure 13a and Figure 13b These are the sectional view and top view of the pad block, respectively; Figure 14a and Figure 14b These are two 3D views of the pad block; Figure 15a and Figure 15b These are the sectional view and top view of the pad, respectively; Figure 16a and Figure 16b These are a partial sectional view and a bottom view of the backing plate, respectively. Figure 17a and Figure 17b These are the first and second three-dimensional views of the backing board; Figure 18a and Figure 18b These are the sectional view and top view of the support block, respectively. Figure 19a and Figure 19b These are the first and second three-dimensional views of the support block, respectively. Figure 20a and Figure 20b These are the top view and front view of the eccentric axis, respectively. Figure 21 It is a three-dimensional view of the eccentric axis; Figure 22 This is a two-dimensional view of the rotating handle; Figure 23a and Figure 23b These are the longitudinal sectional view and the top view of the stiffener; Figure 24a and Figure 24b These are the rear view and top view of the inclined pressure plate, respectively. Figure 25a and Figure 25b These are two 3D views of the inclined pressure plate; Figure 26 This is a top view of a short double-ended bolt; Figure 27 This is a top view of the short pressure plate support; Figure 28a and Figure 28b These are the bottom and front views of the open washer, respectively. Figure 29a and 29b These are the top and right views of the small pressure plate, respectively. Figure 30 This is a front view of the long pressure plate support; Figure 31a and Figure 31b These are the front view and top view of a hexagonal nut; In the diagram, the lock hook is -1; the lock hook blank is -100. Locking hook head-101, locking hook upper through groove-102, pressing surface-103, lower end positioning surface-104, tail end-105, head side positioning surface-106, support inclined surface-107, locking hook head positioning surface-108; Base plate-2; pad mounting groove-201, back plate mounting groove-202, reinforcing rib mounting groove-203, pad mounting hole-204, back plate mounting hole-205, rib plate mounting hole-206, small boss-207, support block mounting hole-208, long double-headed bolt mounting hole-209; Spacer block-3; Spacer plate mounting hole-301, spacer block threaded hole-302, short double-ended bolt mounting hole-303, left side positioning surface-304; Pad-4; Pad countersunk hole-401; Backing plate-5; backing plate threaded hole-501, eccentric shaft mounting hole-502, positioning large end face-503 Support block-6; eccentric shaft placement semi-circular groove-601, support block threaded hole-602 Eccentric shaft -7; Concentric rear section -701, Concentric front section -702, Eccentric middle section -703 Rotate handle -8; Reinforcing rib -9; Reinforcing rib screw hole -901; Support surface of back plate -902; Boss contact surface -903 Inclined pressure plate-10; pressing arc surface-1001, through hole-1002, short support nail hole-1003; Short double-ended bolt-11; First bolt section-1101, Second bolt section-1102; Short pressure plate support -12; Open-end washer -13; Small pressure plate-14; oblong hole-1401, long support nail hole-1402; long double-ended bolt-15; long pressure plate support-16; hexagonal nut-17. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0015] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0016] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0017] See Figures 1a to 1d , Figure 2 , Figures 3a to 3d , Figures 4 to 6 , Figures 7a to 7d , Figure 8 , Figures 9a to 9d , Figure 10 , Figures 11a to 11b , Figures 12a to 12b , Figures 13a to 13b , Figures 14a to 14b , Figures 15a to 15b , Figures 16a to 16b , Figures 17a to 17b , Figures 18a to 18b , Figures 19a to 19b , Figures 20a to 20b , Figures 21 to 22 , Figures 23a to 23b , Figures 24a to 24b , Figures 25a to 25b , Figures 26 to 27 , Figures 28a to 28b , Figures 29a to 29b , Figure 30 , Figures 31a to 31b This utility model provides a processing and positioning device for a lock hook, including a horizontally distributed base plate 2; The top surface of the base plate 2 is provided with horizontally distributed pads 3 in the middle and right end; A pad 4 is provided at each of the left and right ends of the top of the pad block 3; A horizontally distributed backing plate 5 is provided on the left end of the top surface of the base plate 2; The backing plate 5 is located behind the pad 3 and is set parallel to the pad 3. A support block 6 is provided at the top left front end of the base plate 2; The front part of the longitudinally distributed eccentric shaft 7 is placed on the top of the support block 6; The rear part of the eccentric shaft 7 is inserted into the lower left part of the backing plate 5; A rotating handle 8 is provided at the front end of the eccentric shaft 7; The middle part of the inclined pressure plate 10 is hinged to the upper left corner of the pad block 3 (that is, rotatably connected). The bottom plate 2 is provided with vertically distributed long double-headed bolts 15 at its right rear end; A small pressure plate 14 is provided on the upper part of the long double-ended bolt 15.

[0018] In this utility model, specifically, the eccentric shaft 7 is used to abut against the support slope 107 on the lower left side of the lock hook blank 100 (closely contacting each other, specifically, the outer circular surface of its eccentric middle 703 abuts against the support slope 107 on the lower left side of the lock hook blank 100). The small pressure plate 14 is used to press down on the pressing surface 103 at the upper middle part of the hook blank 100; The inclined pressure plate 10 is used to press the head 101 of the hook blank 100 after pressing it, so that the rear side of the hook blank 100 is in close contact with the positioning large end face 503 on the front side of the backing plate 5.

[0019] It should be noted that the processing positioning device provided by this utility model includes multiple components such as a base plate 2, a pad block 3, a pad plate 4, a backing plate 5, a support block 6, an eccentric shaft 7, a rotating handle 8, a reinforcing rib 9, an inclined pressure plate 10, a short double-ended bolt 11, a short pressure plate support 12, an open washer 13, a small pressure plate 14, a long double-ended bolt 15, a long pressure plate support 16, and a hexagonal nut 17.

[0020] In this utility model, specifically, the left and right ends of the upper plane of the base plate 2 are respectively provided with horizontally distributed backing plate mounting grooves 202 and pad mounting grooves 201; The mounting groove 202 of the backing plate and the mounting groove 201 of the pad are interconnected; The lower end of the pad 3 is provided in the pad mounting groove 201; The lower end of the backing plate 5 is provided in the backing plate mounting groove 202; In specific implementation, the upper surface of the base plate 2 is provided with longitudinally distributed reinforcing rib mounting grooves 203 on the rear side of the mounting groove 202; A reinforcing rib 9 is provided on the reinforcing rib mounting groove 203; The reinforcing rib mounting groove 203 and the backing plate mounting groove 202 are interconnected; In specific implementation, three horizontally equally spaced pad mounting holes 204 are provided at the longitudinal center of the pad mounting groove 201. Two mounting holes 205, spaced apart on the left and right, are provided at the longitudinal center of the mounting groove 202. A rib mounting hole 206 is provided in the middle of the reinforcing rib mounting groove 203; A small boss 207 is provided on the rear side of the reinforcing rib mounting groove 203, protruding upwards; In terms of specific implementation, the left front end of the base plate 2 is vertically provided with two horizontally spaced support block mounting holes 208; A long double-headed bolt mounting hole 209 is vertically provided through the rear right side of the base plate 2; In this utility model, specifically, the upper surface of the pad 3 is provided with two pairs of pad mounting holes 301; Two pairs of mounting holes 301 are used to install two horizontally arranged pads 4; At the bottom of the pad 3, a pad threaded hole 302 is provided at the position corresponding to each pad mounting hole 204 on the pad mounting groove 201 of the base plate 2 (a total of three pad threaded holes 302). The upper left corner of the pad 3 is provided with a short double-headed bolt mounting hole 303 that runs through the front and back; The left side of the pad 3 is provided with a left positioning surface 304; In this utility model, specifically, the pad 4 is a thin plate-shaped workpiece; A countersunk hole 401 is vertically provided at both ends of the longitudinal center of the pad 4; In this utility model, specifically, the bottom of the backing plate 5 is provided with two backing plate threaded holes 501; Two threaded holes 501 on the back plate are correspondingly set with two back plate mounting holes 205 on the back plate mounting groove 202 of the base plate 2 (connected by screws). The lower left part of the back plate 5 is provided with an eccentric shaft mounting hole 502 that runs through the front and rear. The front end face of the backing plate 5 is the positioning large end face 503; It should be noted that the two backplate threaded holes 501 are installed on the two backplate mounting holes 205 on the backplate mounting groove 202 of the base plate 2 (by screws).

[0021] In this utility model, specifically, the bottom of the support block 6 is provided with two support block threaded holes 602; The two support block threaded holes 602 are correspondingly set with the two support block mounting holes 208 on the base plate 2 (connected by screws). At the top center of the base plate 2, there is a recessed eccentric shaft placement semicircular groove 601; The semi-circular groove 601 for placing the eccentric shaft 7 is used to place the eccentric shaft 7. It should be noted that the two support block threaded holes 602 are installed on the two support block mounting holes 208 of the base plate 2 (by screws).

[0022] In this utility model, specifically, the front and rear ends of the eccentric shaft 7 have a concentric front part 702 and a concentric rear part 701, respectively. An eccentric middle part 703 is provided between the concentric front part 702 and the concentric rear part 701, and the two are connected through the eccentric middle part 703. The concentric front part 702 and the concentric rear part 701 are concentric (that is, the center points of the two are located on the same longitudinal axis). The outer circular surface of the eccentric middle 703 is used to abut against the support slope 107 on the lower left side of the lock hook blank 100. In practice, the axis of the eccentric middle part 703 has a preset deviation distance D (specifically, a deviation of 5 mm) between it and the axis of the concentric front part 702 and the concentric rear part 701.

[0023] It should be noted that, in specific implementation, the preset deviation distance D needs to be determined based on the relative positional dimensional tolerance between the support slope 107 of the hook head and the lower positioning surface 104, and its adjustable range needs to be greater than this tolerance range (i.e., greater than the relative positional dimensional tolerance between the support slope 107 of the hook head and the lower positioning surface 104).

[0024] In practice, the concentric rear part 701 is inserted into the eccentric shaft mounting hole 502 on the lower left side of the back plate 5; The concentric front part 702 is placed in the eccentric shaft placement semi-circular groove 601 at the top of the support block 6; In specific implementation, the front end of the concentric front part 702 of the eccentric shaft 7 is provided with a handle mounting hole 704 that extends laterally through the shaft. A rotating handle 8 is installed on the handle mounting hole 704; The rotating handle 8 is used to adjust the distance between the uppermost generatrix of the eccentric middle 703 of the eccentric shaft 7 and the horizontal worktable placed on the bottom plate 2 by rotating the handle, thereby adjusting the height of the left end of the lock hook blank 100 so that the lower end positioning surface 104 of the middle and lower right ends of the lock hook blank 100 contacts the top surface of the two pads 4.

[0025] It should be noted that, in this utility model, the end of the rotating handle 8 is secured by a nut. During operation, by rotating the rotating handle 8, the distance between the uppermost busbar of the eccentric center 703 and the lowermost horizontal worktable placed on the bottom plate 2 can be controlled, thus achieving adjustable support.

[0026] In this utility model, specifically, the top left end of the base plate 2 is provided with vertically distributed reinforcing ribs 9 at the rear side of the plate 5. The front side of the reinforcing rib 9 abuts against the rear side of the backing plate 5 (i.e., they are in close contact). In specific implementation, the bottom of the reinforcing rib 9 is provided with a reinforcing rib screw hole 901; The reinforcing rib screw hole 901 is set to correspond with the rib mounting hole 206 of the base plate 2 (connected by screws). The front side of the reinforcing rib 9 has a backing plate support surface 902 that abuts against the rear side of the backing plate 5 (i.e., they are in close contact). The boss contact surface 903 on the rear side of the reinforcing rib 9 abuts (i.e., it is in close contact with the front side of the small boss 207 on the base plate 2). It should be noted that the reinforcing rib 9 is installed in the reinforcing plate mounting hole 206 of the base plate 2 through the reinforcing rib screw hole 901 at its bottom (specifically fixed by screws), the front side of the back plate support surface 902 is in close contact with the back plate 5, and the rear side of the boss contact surface 903 abuts against the small boss 207. In this utility model, specifically, a pressing arc surface 1001 is provided on the rear left side of the inclined pressure plate 10; The pressing arc surface 1001 of the inclined pressure plate 10 is used to press the head 101 of the lock hook blank 100 after pressing it, so that the rear side of the lock hook blank 100 is in close contact with the positioning large end face 503 on the front side of the backing plate 5. The inclined pressure plate 10 has a through hole 1002 that runs from front to back through the middle. The right end of the inclined pressure plate 10 is provided with a short support nail hole 1003 that runs through the front and back; A short pressure plate support 12 is provided inside the short support nail hole 1003; The rear end of the short pressure plate support 12 protrudes rearward from the rear side of the inclined pressure plate 10; The rear end of the short pressure plate support 12 is used to abut against the front side of the pad block 3; It should be noted that the inclined pressure plate 10 has a through hole 1002 in the middle that allows the second bolt part 1102 of the short double-ended bolt 11 to pass through, and a short support nail hole 1003 is provided at the right end and a short pressure plate support 12 is installed.

[0027] In this utility model, specifically, the inclined pressure plate 10 is hinged to the pad block 3 by longitudinally distributed short double-headed bolts 11 (that is, rotatably connected). In specific implementation, the short double-ended bolt 11 has a second bolt portion 1102 and a first bolt portion 1101 at its front and rear ends, respectively; The first bolt portion 1101 of the short double-ended bolt 11 is threadedly connected to the short double-ended bolt mounting hole 303 located at the upper left corner of the pad 3; The second bolt portion 1102 of the short double-ended bolt 11 passes through the through hole 1002 in the middle of the inclined pressure plate 10 from back to front and is then threadedly fixed to a hexagonal nut 17.

[0028] Furthermore, an open washer 13 is provided between the hexagonal nut 17 and the front side of the inclined pressure plate 10; An open washer 13 is fitted onto the outside of the second bolt portion 1102 of the short double-ended bolt 11.

[0029] Furthermore, the length of the second bolt portion 1102 is less than the length of the first bolt portion 1101; It should be noted that the short double-ended bolt 11 is screwed into the short double-ended bolt mounting hole 303 of the pad block 3 through the first bolt part 1101 at its rear. The second bolt part 1102 at the front of the short double-ended bolt 1 passes through the through hole 1002 of the inclined pressure plate 10 and the open washer 13 in sequence, and is screwed into its end by the hexagonal nut 17.

[0030] In this utility model, specifically, the small pressure plate 14 is provided with an elongated hole 1401 in the middle; The upper part of the long double-ended bolt 15 passes through the elongated hole 1401 of the small pressure plate 14 from bottom to top and is threadedly connected to a hexagonal nut 17. In practice, the lower end of the long double-ended bolt 15 is screwed into the long double-ended bolt mounting hole 209 in the base plate 2; In this utility model, specifically, the rear end of the small pressure plate 14 is provided with a vertically distributed long pressure plate support 16 protruding downward.

[0031] The rear end of the small pressure plate 14 is provided with a long support nail hole 1402; The long support nail hole 1402 is threadedly connected to the upper end of the long pressure plate support 16.

[0032] When the small pressure plate 14 presses down on the locking hook blank 100 and is in a horizontal position, the bottom end of the long pressure plate support 16 contacts the top surface of the base plate 2.

[0033] It should be noted that, for this utility model, the long pressure plate support 16 and the workpiece (such as the lock hook blank 100) are located on both sides of the long double-ended bolt 15, and its horizontal height is related to the height of the workpiece's pressing surface 103. When pressing the workpiece, it is advisable to keep the small pressure plate 14 basically horizontal. The function of the long pressure plate support 16 is to support the end of the small pressure plate 14 away from the workpiece so that it does not fall downwards.

[0034] It should be noted that the small pressure plate 14 has an elongated hole 1401 in the middle; one end of the long double-ended bolt 15 is screwed into the long double-ended bolt mounting hole 209, and the other end passes through the elongated hole 1404 of the small pressure plate 14 and is screwed to the end by the hexagonal nut 17; the end of the small pressure plate 14 has a long support nail hole 1402 and a long pressure plate support 16 is installed.

[0035] Based on the above-mentioned processing and positioning device for a lock hook provided by this utility model, this utility model also provides a processing system for a lock hook, which includes the processing and positioning device for a lock hook as described above, and a vertical milling machine. A vertical milling machine is used to perform machining operations on the lock hook blank 100 to obtain the finished lock hook 1 by using a ball end mill on it to machine the upper through groove 102 of the lock hook.

[0036] In this utility model, the vertical milling machine is a mature existing machining equipment, and will not be described in detail here.

[0037] To better understand the technical solution of this utility model, the working process of this utility model is described below.

[0038] First, the device of this utility model is placed on the workbench. The worker places the tail of the hook blank 100 to be added onto the device with its tail facing right. Since the center of gravity of the hook blank 100 is at the head, the hook blank 100 is not under force at this time. The outer circular surface of the eccentric middle 703 of the eccentric shaft 7 abuts against the supporting inclined surface 107 on the lower left side of the hook blank 100. The positioning surface 104 at the lower end of the hook blank 100 contacts the top surface of the pad 4 on the left side and is supported by the pad 4. Furthermore, the hook head positioning surface 106 on the lower right side of the hook head 101 of the hook blank 100 abuts against the left positioning surface 304 on the left side of the pad 3. Then, adjust the rotating handle 8 so that the lower end positioning surface 104 of the middle and lower right end of the lock hook blank 100 is in full contact with the top surface of the two pads 4, thereby aligning the workpiece (i.e. aligning the lock hook blank 100). Among them, since the eccentric shaft 7 is located on the lower left side of the support slope 107 on the lower left side of the left end of the lock hook blank 100, the eccentric shaft 7 exerts a rightward thrust on the lock hook blank 100 under the action of gravity. That is to say, while the lower end positioning surface 104 of the middle and right part of the lock hook blank 100 is in full contact with the two pads 4, the positioning surface 106 of the lock hook head is in full contact with the left positioning surface 304 on the left side of the pad block 3. Then, rotate (specifically clockwise) the hexagonal nut 17 on the front side of the inclined pressure plate 10. The hexagonal nut 17 pushes the inclined pressure plate 10 backward, thereby the inclined pressure plate 10 further pushes the lock hook blank 100, so that the lock hook blank 100 moves towards the rear of the backing plate 5 and is in close contact with the positioning large end face 503 on the front side of the backing plate 5. Then, continue to tighten the hexagonal nut 17 on the front side of the inclined pressure plate 10, and rotate the hexagonal nut 17 at the small pressure plate 14, so that the small pressure plate 14 presses down on the pressing surface 103 at the upper middle part of the lock hook blank 100; the small pressure plate 1 is located directly above the pressing surface 103 at the upper middle part of the lock hook blank 100; at this time, the positioning and clamping of the lock hook blank 100 to be processed in this device is completed. Then, start the vertical milling machine and use the ball end mill on the vertical milling machine to perform the machining operation of the upper through groove 102 of the lock hook on the lock hook blank 100, and finally obtain the finished lock hook 1 with the upper through groove 102 of the lock hook machined.

[0039] For example, a vertical milling machine can be manufactured using a VL1165 vertical machining center (milling machine) produced by Dongguan Jugao Machine Tool Co., Ltd. By manually operating the machine tool's coordinate axes, the cutting tool (ball end mill) is brought close to the workpiece to be machined (e.g., the hook blank 100). A trial cut method can be used for tool setting, where the workpiece surface is lightly cut to determine the relative position of the tool and workpiece. The values ​​in the machine tool coordinate system at this point are recorded as the origin of the workpiece coordinate system, completing the tool setting. Then, the existing workpiece machining program is input into the machine tool through the input devices of the vertical machining center's CNC system (such as a keyboard or USB flash drive). Finally, the machine tool's working mode is switched to automatic operation mode, and the start button is pressed. The machine tool will automatically machine according to the programmed trajectory and parameters to complete the machining operation of the through groove 102 on the hook of the workpiece. The above workpiece machining operation uses existing mature technology and is a conventional machining method already applied in actual production, and will not be elaborated further here.

[0040] Furthermore, when the finished product hook 1 needs to be disassembled after processing, loosen the hexagonal nut 17 at the small pressure plate 14, rotate and push the small pressure plate 17 towards the rear of the device to disengage it from the hook 1, then loosen the hexagonal nut 17 at the inclined pressure plate 10, and remove the open washer 13. This way, without removing the hexagonal nut 17, the inclined pressure plate 10 will no longer press the hook 1 backward, so that the rear side of the hook 1 is no longer in close contact with the positioning large end face 503 on the front side of the rear backing plate 5. The hook 1 is in a loose state (i.e., no longer clamped and positioned). Then, the worker can remove the hook 1 to carry out the processing operation of the next workpiece (hook blank 100).

[0041] Compared with the prior art, the processing and positioning device for the lock hook provided by this utility model has the following advantages: 1. This utility model adopts an eccentric shaft structure to adjust the workpiece (i.e., the hook blank) whose center of gravity deviates from the positioning surface, which avoids over-positioning and ensures the stability of workpiece clamping. 2. This utility model adopts a clamping structure that combines a slanted pressure plate and an open washer. By slightly loosening the hexagonal nut at its end, the open washer and the slanted pressure plate can be removed, making it convenient to remove the locking hook of the finished product. It is easy to operate, easy to maintain, and improves work efficiency.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A processing and positioning device for a locking hook, characterized in that, Including the horizontally distributed base plate (2); The top surface of the base plate (2) is provided with horizontally distributed pads (3) at the middle and right end. A pad (4) is provided at the top left and right ends of the pad (3); A horizontally distributed backing plate (5) is provided on the left end of the top surface of the base plate (2); The backing plate (5) is located behind the pad (3) and is set parallel to the pad (3); A support block (6) is provided at the top left front end of the base plate (2); The front part of the longitudinally distributed eccentric shaft (7) is placed on the top of the support block (6); The rear part of the eccentric shaft (7) is inserted into the lower left part of the back plate (5); A rotating handle (8) is provided at the front end of the eccentric shaft (7); The middle part of the inclined pressure plate (10) is hinged to the upper left corner of the pad (3); The bottom plate (2) is provided with vertically distributed long double-headed bolts (15) at the right rear end. A small pressure plate (14) is provided on the upper part of the long double-ended bolt (15).

2. The processing and positioning device for the lock hook as described in claim 1, characterized in that, An eccentric shaft (7) is used to abut against the support slope (107) on the lower left side of the lock hook blank (100); Small pressure plate (14) is used to press down on the pressing surface (103) at the upper middle part of the hook blank (100). The inclined pressure plate (10) is used to press the head (101) of the hook blank (100) with the back, so that the rear side of the hook blank (100) is in close contact with the positioning large end face (503) on the front side of the back plate (5).

3. The processing and positioning device for the lock hook as described in claim 1, characterized in that, The bottom plate (2) has horizontally distributed mounting grooves (202) for the backing plate and mounting grooves (201) for the pad at both ends of the upper plane. The mounting groove (202) for the backing plate and the mounting groove (201) for the pad are interconnected; The lower end of the pad (3) is provided in the pad mounting groove (201); The lower end of the backing plate (5) is provided in the backing plate mounting groove (202).

4. The processing and positioning device for the lock hook as described in claim 3, characterized in that, The upper surface of the base plate (2) is provided with longitudinally distributed reinforcing rib mounting grooves (203) on the rear side of the mounting groove (202). A reinforcing rib (9) is provided on the reinforcing rib mounting groove (203); The reinforcing rib mounting groove (203) and the backing plate mounting groove (202) are interconnected; Three horizontally spaced mounting holes (204) are provided at the longitudinal center of the pad mounting groove (201). Two backplate mounting holes (205) are provided at the longitudinal center of the backplate mounting groove (202) with left and right intervals. A rib mounting hole (206) is provided in the middle of the reinforcing rib mounting groove (203); A small boss (207) is provided on the rear side of the reinforcing rib mounting groove (203) protruding upward. The left front end of the base plate (2) is vertically provided with two horizontally spaced support block mounting holes (208). A long double-headed bolt mounting hole (209) is vertically provided at the right rear end of the base plate (2).

5. The processing and positioning device for the lock hook as described in claim 1, characterized in that, The upper surface of the pad (3) is provided with two pairs of pad mounting holes (301); Two pairs of pad mounting holes (301) are used to install two horizontally arranged pads (4); At the bottom of the pad (3), a pad thread hole (302) is provided at the position corresponding to each pad mounting hole (204) on the pad mounting groove (201) of the base plate (2). The upper left corner of the pad (3) is provided with a short double-headed bolt mounting hole (303) that runs through the front and back. The left side of the pad (3) is provided with a left positioning surface (304); At the left and right ends of the longitudinal center of the pad (4), a countersunk hole (401) is provided vertically through each of them. The bottom of the back plate (5) is provided with two back plate threaded holes (501); Two threaded holes (501) on the back plate are set to correspond to two mounting holes (205) on the back plate mounting groove (202) of the base plate (2); The lower left part of the back plate (5) is provided with an eccentric shaft mounting hole (502) that runs through the front and back. The front end face of the backing plate (5) is the positioning large end face (503); The bottom of the support block (6) is provided with two support block threaded holes (602); The two support block threaded holes (602) are set to correspond to the two support block mounting holes (208) on the base plate (2); At the top center of the base plate (2), there is a recessed eccentric shaft placement semicircular groove (601). The eccentric shaft placement semi-circular groove (601) is used to place the eccentric shaft (7).

6. The processing and positioning device for the lock hook as described in claim 1, characterized in that, The front and rear ends of the eccentric shaft (7) have a concentric front part (702) and a concentric rear part (701), respectively. An eccentric middle section (703) is provided between the concentric front part (702) and the concentric rear part (701), and the two are connected through the eccentric middle section (703); The concentric front part (702) and the concentric rear part (701) are concentric; The outer circular surface of the eccentric middle part (703) is used to abut against the support slope (107) on the lower left side of the hook blank (100).

7. The processing and positioning device for the lock hook as described in claim 6, characterized in that, The concentric rear part (701) is inserted into the eccentric shaft mounting hole (502) on the lower left side of the back plate (5); The concentric front part (702) is placed in the eccentric shaft placement semicircular groove (601) on the top of the support block (6); And / or, At the front end of the concentric front part (702) of the eccentric shaft (7), there is a handle mounting hole (704) that extends laterally through the shaft. A rotating handle (8) is installed on the handle mounting hole (704); The rotating handle (8) is used to adjust the distance between the uppermost generatrix of the eccentric middle (703) of the eccentric shaft (7) and the horizontal worktable placed on the bottom plate (2) by rotating the handle, thereby adjusting the height of the left end of the lock hook blank (100) so that the lower end positioning surface (104) of the middle and lower right end of the lock hook blank (100) contacts the top surface of the two pads (4).

8. The processing and positioning device for the lock hook as described in claim 1, characterized in that, The top left end of the base plate (2) is provided with vertically distributed reinforcing ribs (9) at the rear side of the plate (5); The front side of the reinforcing rib (9) abuts against the rear side of the backing plate (5); The bottom of the reinforcing rib (9) is provided with a reinforcing rib screw hole (901); The reinforcing rib screw holes (901) are set to correspond to the rib mounting holes (206) of the base plate (2); The front side of the reinforcing rib (9) has a backing plate support surface (902) that abuts against the rear side of the backing plate (5); The boss contact surface (903) on the rear side of the reinforcing rib (9) abuts against the front side of the small boss (207) on the base plate (2).

9. The machining and positioning device for the lock hook as described in any one of claims 1 to 8, characterized in that, The left rear end of the inclined pressure plate (10) is provided with a pressing arc surface (1001). The pressing arc surface (1001) of the inclined pressure plate (10) is used to press the head (101) of the hook blank (100) after pressing it, so that the rear side of the hook blank (100) is in close contact with the positioning large end face (503) on the front side of the backing plate (5); The inclined pressure plate (10) has a through hole (1002) that runs from front to back in the middle. The right end of the inclined pressure plate (10) is provided with a short support nail hole (1003) that runs through the front and back. A short pressure plate support (12) is provided inside the short support nail hole (1003); The rear end of the short pressure plate support (12) protrudes rearward from the rear side of the inclined pressure plate (10); The rear end of the short pressure plate support (12) is used to abut against the front side of the pad (3); And / or, The inclined pressure plate (10) is hinged to the pad (3) by longitudinally distributed short double-headed bolts (11); The short double-ended bolt (11) has a second bolt portion (1102) and a first bolt portion (1101) at its front and rear ends, respectively. The first bolt portion (1101) of the short double-ended bolt (11) is threadedly connected to the short double-ended bolt mounting hole (303) located at the upper left corner of the pad (3); The second bolt part (1102) of the short double-ended bolt (11) passes through the through hole (1002) in the middle of the inclined pressure plate (10) from back to front and is then threadedly fixed to a hexagonal nut (17); An open washer (13) is provided between the hexagonal nut (17) and the front side of the inclined pressure plate (10); An open washer (13) is fitted onto the outside of the second bolt portion (1102) of the short double-ended bolt (11); And / or, The small pressure plate (14) has an elongated hole (1401) in the middle. The upper part of the long double-ended bolt (15) passes through the elongated hole (1401) of the small pressure plate (14) from bottom to top and is threaded to a hexagonal nut (17); The lower end of the long double-ended bolt (15) is screwed into the long double-ended bolt mounting hole (209) of the base plate (2); The rear end of the small pressure plate (14) is provided with vertically distributed long pressure plate supports (16) protruding downwards. The rear end of the small pressure plate (14) is provided with a long support nail hole (1402). The long support nail hole (1402) is threadedly connected to the upper end of the long pressure plate support (16).

10. A machining system for a lock hook, characterized in that, The invention includes a machining and positioning device for a locking hook as described in any one of claims 1 to 9, and a vertical milling machine; A vertical milling machine is used to perform a through-groove (102) on a lock hook blank (100) by using a ball end mill on it to obtain a finished lock hook (1).

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