Positioning device for thread sleeve machining

Abstract

The utility model provides a positioning device for thread insert machining. The positioning device comprises a workbench, a portal frame, a control air cylinder, a lifting plate, a thread forming cutter, a rotating motor, a rotating disc, a thread insert containing barrel, a clamping block, a centering linkage mechanism, a sliding rod, a control ring, an extrusion arc plate and a spring. The air cylinder is controlled to drive the lifting plate to move up and down, and the thread sleeve is machined through the thread forming cutter; the rotating motor drives the turntable to rotate, so that the thread sleeve placing barrels sequentially enter a processing area; three clamping blocks which are installed in a sliding mode are arranged in the thread sleeve containing barrel, and movement of the clamping blocks is synchronously controlled through a centering linkage mechanism, so that the thread sleeve is accurately positioned; the extrusion ball head is extruded when the rotating disc rotates to the extrusion arc plate area, the toothed rod is driven to move inwards, accordingly, the clamping blocks are synchronously pushed through the connecting rods to clamp the thread sleeve, the machining precision is guaranteed, after machining is completed, the clamping blocks reset under the action of the springs, the thread sleeve is conveniently taken out and enters the next machining cycle, and the machining efficiency and the automation degree are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of screw sleeve processing, specifically relates to a positioning device for screw sleeve processing. BACKGROUND

[0002] The screw sleeve is a fastening element for enhancing the strength of threaded connection, and is widely used in the industries of mechanical processing, automobile manufacturing, aerospace, etc. In the processing of screw sleeve, the accurate positioning of screw sleeve is the key to guarantee the quality of thread and improve the processing precision and efficiency. The traditional screw sleeve processing usually relies on manual clamping or simple mechanical clamp for positioning, but has certain deficiencies.

[0003] At present, most of the screw sleeve processing equipment on the market adopts fixed clamps or simple elastic clamping mechanisms to fix the screw sleeve, and this method has the following problems: on the one hand, the size of the fixed clamp is usually fixed, which is difficult to adapt to the processing of screw sleeves of different specifications, and if different sizes of screw sleeves need to be replaced, the clamp often needs to be adjusted or replaced, which is complex and low in efficiency; on the other hand, due to the structural design problem of the clamping mechanism, the clamping force is uneven or the clamping position is offset during the clamping of the screw sleeve, which leads to the positional deviation of the screw sleeve during the processing, thereby affecting the processing precision of the thread. In addition, the release mode of part of the clamping mechanism after processing is relatively single, which is prone to the difficulty in taking out the screw sleeve or the need for additional force to complete the taking out, thereby affecting the processing efficiency. TECHNICAL FIELD

[0004] In view of the problems in the prior art, the utility model aims to provide a positioning device for screw sleeve processing, which can realize the accurate clamping and positioning of the screw sleeve through the adjustable clamping structure, the rotating mechanism of the turntable and the extrusion control device, and can adapt to the processing requirements of screw sleeves of different specifications, thereby improving the precision and production efficiency of threaded processing.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] The utility model provides a positioning device for thread processing, including the workbench, the back side fixed with gantry on the workbench upper surface, the top of gantry is fixed with control cylinder, the inboard slide of gantry is installed with lifting plate, the output of control cylinder is fixed on the lifting plate upper surface, the lower surface center of lifting plate is installed with thread forming cutter, the lower surface of workbench is fixed with rotary motor, the rotary motor output is installed with carousel, the carousel is placed on the workbench upper surface, the carousel surface is evenly provided with 8 thread placing barrels with its rotary shaft as the center, the thread placing barrel top is open, the thread placing barrel inner wall evenly is provided with 8 installation grooves, the inboard slide of installation groove is installed with clamping block, three clamping blocks are used to center clamping to the inside placed thread, the thread placing barrel rotates to thread forming cutter right below in turn, the outer side of thread placing barrel is provided with centering linkage mechanism, and the centering linkage mechanism is used for synchronous control is 3 clamping block movement.

[0007] Further, the side surface of the three clamping blocks close to each other is rolled with anti-skid lines, the outer side of the clamping block is provided with an extension plate transversely, and the extension plate penetrates the outer side surface of the thread placing barrel.

[0008] Further, the centering linkage mechanism comprises a slide rod and a control ring rotating on the outer side of the thread placing barrel, the upper surface of the control ring is uniformly provided with three fixed pegs, the surface of the three fixed pegs is hinged with a connecting rod, and the end of the connecting rod away from the fixed peg is hinged to the end of the extension plate.

[0009] Further, the upper surface of the carousel is uniformly provided with a group of bosses, each group of the bosses is provided with two bosses and is placed on one side of the installation groove, and the slide rod slides through the two bosses in the same group.

[0010] Further, one side of the control ring is uniformly provided with a convex tooth, the surface of the slide rod is provided with a tooth rod, the tooth rod and the convex tooth are engaged with each other, the outer side end of the slide rod is provided with a squeeze ball head, the squeeze ball head exceeds the outer side surface of the carousel, and the upper surface of the workbench is welded with a squeeze arc plate.

[0011] Further, the squeeze arc plate is placed on the rear side of the carousel and coincides with the center of the carousel, and guide inclined surfaces are arranged at both ends of the carousel, wherein the squeeze ball head placed on the rear side is squeezed to move to the center of the carousel by the squeeze arc plate.

[0012] Further, the surface of the slide rod is sleeved with a spring, the spring is placed between the tooth rod and the boss, and the spring is placed on the side away from the squeeze ball head.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The positioning device for screw sleeve machining has the advantages that the accurate positioning, stable clamping and efficient machining of the screw sleeve are realized through the structural design of the clamping mechanism, the rotary transmission mechanism and the control mechanism, the problems of inaccurate positioning, unstable clamping and poor applicability in the prior art are solved, and the quality and production efficiency of the screw sleeve machining are improved.

[0015] The utility model discloses a positioning device for screw sleeve machining, through the structural design of clamping mechanism, rotary transmission mechanism and control mechanism, realize accurate positioning, stable clamping and efficient processing of screw sleeve, effectively solve the problem of inaccurate positioning, unstable clamping and poor applicability in the prior art, improve the quality and production efficiency of screw sleeve machining.

[0016] The utility model discloses a positioning device for screw sleeve machining, through the structural design of clamping mechanism, rotary transmission mechanism and control mechanism, realize accurate positioning, stable clamping and efficient processing of screw sleeve, effectively solve the problem of inaccurate positioning, unstable clamping and poor applicability in the prior art, improve the quality and production efficiency of screw sleeve machining.

[0017] The utility model discloses a positioning device for screw sleeve machining, through the structural design of clamping mechanism, rotary transmission mechanism and control mechanism, realize accurate positioning, stable clamping and efficient processing of screw sleeve, effectively solve the problem of inaccurate positioning, unstable clamping and poor applicability in the prior art, improve the quality and production efficiency of screw sleeve machining.

[0018] The utility model discloses a positioning device for screw sleeve machining, through the structural design of clamping mechanism, rotary transmission mechanism and control mechanism, realize accurate positioning, stable clamping and efficient processing of screw sleeve, effectively solve the problem of inaccurate positioning, unstable clamping and poor applicability in the prior art, improve the quality and production efficiency of screw sleeve machining.

[0019] The utility model discloses a high-strength material and precision machining process are adopted, improved the abrasion resistance and service life of device, and optimized the structure of screw sleeve clamping mechanism, make it can adapt to the screw sleeve processing demand of different size. The device not only improves the precision of thread processing, reduces the frequency of equipment replacement and adjustment simultaneously, further improves production efficiency, reduces the maintenance cost of equipment. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0021] Figure 2 It is the front view structure schematic diagram of the utility model;

[0022] Figure 3 It is the workbench and extrusion arc plate structure schematic diagram of the utility model;

[0023] Figure 4 It is the screw sleeve placement position structure schematic diagram of the utility model;

[0024] Figure 5 It is the control ring and rack structure schematic diagram of the utility model;

[0025] Figure 6 It is the Figure 4 The A area amplification structure schematic diagram of the utility model.

[0026] In the drawings, the component list represented by each sign is as follows:

[0027] 1, workbench;11, gantry;12, lifting plate;13, control cylinder;14, thread forming cutter;2, rotary motor;3, extrusion arc plate;31, guide slope;4, rotary table;41, screw sleeve placement cylinder;42, installation groove;43, boss;5, clamping block;51, antiskid line;52, extension plate;6, control ring;61, fixed peg;62, lugs;7, slide bar;71, rack;72, extrusion ball head;8, spring;9, connecting rod. DETAILED DESCRIPTION

[0028] In order to make the purpose and the advantage of the utility model more clearly clear, the following specific description of the utility model is combined with example. It should be understood that the following text only describes one or several specific embodiments of the utility model, and does not strictly limit the protection range of the utility model specific request.

[0029] Reference Figures 1-6As shown, a positioning device for machining threaded inserts includes a worktable 1 made of high-strength cast iron to ensure the stability of the overall structure and reduce the impact of vibration; a gantry frame 11 is fixed to the rear side of the upper surface of the worktable 1, made of Q235B carbon steel to ensure sufficient rigidity and load-bearing capacity; a control cylinder 13 is fixed to the top of the gantry frame 11, which is a double-acting cylinder of model MGPL25-100, providing stable up and down driving force; a lifting plate 12 is slidably installed on the inner side of the gantry frame 11. 2. Made of 6061 aluminum alloy to reduce overall weight and improve corrosion resistance; the output end of the control cylinder 13 is fixed on the upper surface of the lifting plate 12, and a thread forming cutter 14 is installed at the center of the lower surface of the lifting plate 12. A motor is set inside the lifting plate 12, and the thread forming cutter 14 is installed on the output end of the motor so as to achieve thread processing by rotation during the downward movement. The thread forming cutter 14 is made of cemented carbide YG8 material and is treated with PVD coating to improve wear resistance and cutting accuracy, and ensure high-quality forming of the threaded sleeve during the processing.

[0030] A rotary motor 2 is fixed to the lower surface of the worktable 1. The rotary motor 2 is a stepper motor of model 86BHB250-06, which provides stable and controllable rotational power and ensures the precise rotation of the turntable 4 through a precision drive system. It pauses for a period of time after every 45 degrees of rotation to perform processing. The turntable 4 is installed at the output end of the rotary motor 2. The turntable 4 is made of wear-resistant alloy steel and is CNC machined to ensure high concentricity, so as to prevent radial runout during rotation. The turntable 4 is placed on the upper surface of the worktable 1. Eight screw sleeve placement cylinders 41 are evenly arranged on the surface of the turntable 4 with its rotation axis as the center. The screw sleeve placement cylinders 41 are made of 40Cr material and have undergone carburizing treatment to improve wear resistance and fatigue strength. The top of the screw sleeve placement cylinder 41 is open, and three mounting holes are evenly opened on the inner wall of the screw sleeve placement cylinder 41. The mounting groove 42 is designed according to the standard thread insert specifications to ensure smooth positioning when the thread insert is inserted. A clamping block 5 is slidably mounted inside the mounting groove 42. The clamping block 5 is made of tungsten steel and coated with a MoS2 solid lubricant coating to reduce frictional resistance and improve service life. Three clamping blocks 5 are used to center and clamp the thread insert placed inside, ensuring the thread insert remains stable during processing and preventing poor thread processing due to positional misalignment. The thread insert placement cylinder 41 rotates sequentially to directly below the thread forming cutter 14 to ensure precise processing of each thread insert. A centering linkage mechanism is provided on the outside of the thread insert placement cylinder 41, which synchronously controls the movement of the three clamping blocks 5 to ensure synchronized adjustment of the clamping blocks 5, improve clamping accuracy, and ensure the thread insert is placed in the center position.

[0031] refer to Figure 5 and Figure 6As shown, the three clamping blocks 5 are rolled on one side surface close to each other with anti-skid lines 51, which are diamond knurls with a depth of 0.2 mm to enhance clamping force and prevent the sleeve from slipping during clamping; the extension plate 52 is transversely arranged on the outer side of the clamping block 5, which is made of 45 steel material and is quenched and tempered to improve overall rigidity and anti-deformation ability; the extension plate 52 penetrates through the outer side surface of the sleeve placement cylinder 41 to ensure the stable sliding of the clamping block 5 in the radial direction for synchronous clamping action;

[0032] The centering linkage mechanism includes a slide rod 7 and a control ring 6 rotating on the outer side of the sleeve placement cylinder 41, the slide rod 7 is made of quenched stainless steel and plated with chromium on the surface to reduce wear and improve corrosion resistance; the control ring 6 is made of QT500-7 nodular cast iron to ensure sufficient structural strength and impact resistance; three fixed studs 61 are uniformly arranged on the upper surface of the control ring 6, which are M6 standard threaded bolts to ensure installation accuracy through high-precision thread processing; the fixed studs 61 are hingedly connected with connecting rods 9 on the surface, the connecting rods 9 are made of 40Cr alloy steel and are quenched and tempered to improve fatigue resistance; the ends of the connecting rods 9 away from the fixed studs 61 are hingedly connected to the ends of the extension plate 52 to ensure that the clamping blocks 5 can move synchronously during clamping and releasing, improving clamping stability and reliability;

[0033] Reference Figure 4 and Figure 6 As shown, eight groups of bosses 43 are uniformly arranged on the upper surface of the turntable 4, each group of bosses 43 is provided with two bosses arranged on one side of the mounting groove 42, the bosses 43 are fixed on the turntable 4 by welding and are subjected to oxidation treatment on the surface to enhance wear resistance; the slide rod 7 slides through the same group of two bosses 43 to ensure the straight line movement accuracy of the slide rod 7 to ensure the stable operation of the clamping mechanism;

[0034] Reference Figure 5 and Figure 6 As shown, the control ring 6 is uniformly provided with a protruding tooth 62 on one side, the protruding tooth 62 is processed by high-precision gear machining technology to ensure the meshing accuracy and reduce the tooth side gap; the slide rod 7 is provided with a tooth rod 71 on the surface, the tooth rod 71 is meshed with the protruding tooth 62 to ensure that the slide rod 7 can drive the control ring 6 to rotate synchronously when rotating; the outer side end of the slide rod 7 is provided with an extrusion ball head 72, which is made of GCr15 bearing steel and is subjected to high-precision grinding processing to reduce friction and improve service life; the extrusion ball head 72 protrudes beyond the outer side surface of the turntable 4, and the extrusion ball head 72 is connected with the slide rod 7 through threads, so the distance of the extrusion ball head 72 can be adjusted by rotating to facilitate adjustment; the extrusion arc plate 3 is welded on the upper surface of the workbench 1, which is made of Q235 steel material and is subjected to surface spraying of wear-resistant coating to reduce wear caused by long-term use;

[0035] ReferenceFigure 1 And Figure 3 As shown in the figure, the extrusion arc plate 3 is placed at the rear side of the rotating disc 4 and coincides with the center of the rotating disc 4, ensuring that the proper extrusion force can be applied to the extrusion ball head 72 when the rotating disc 4 rotates; the guide slope 31 is arranged at both ends of the rotating disc 4, and the guide slope 31 is designed at an angle of 15° to provide a smooth guiding effect and avoid the slide rod 7 being affected by sudden force; wherein the extrusion ball head 72 placed at the rear side is extruded by the extrusion arc plate 3 to move towards the center of the rotating disc 4, driving the clamping block 5 to clamp synchronously, ensuring the accurate positioning of the screw sleeve;

[0036] Referring to Figure 5 And Figure 6 As shown in the figure, the surface of the slide rod 7 is sleeved with the spring 8, and the spring 8 is made of 304 stainless steel material, ensuring that it will not be broken due to fatigue during long-term use; the spring 8 is placed between the toothed rod 71 and the boss 43 and provides a proper return force, so that the slide rod 7 can automatically return to the original position when the clamping mechanism is released, ensuring the stable resetting of the clamping mechanism in different processing periods;

[0037] The working principle of the utility model is as follows: firstly, according to different processing needs, different sizes of thread forming knives 14 are installed, the control cylinder 13 can control the up-down movement of the thread forming knife 14, and the corresponding driving motor drives the thread forming knife 14 to rotate, so as to realize the processing of the thread; due to the existence of the spring 8, the toothed rod 71 is placed on the side away from the center of the rotating disc 4, at this time the end of the extrusion ball head 72 exceeds the side surface of the rotating disc 4, and the plurality of clamping blocks 5 are pulled to move towards the inside of the installation groove 42, so as to expand the space between the three clamping blocks 5; the screw sleeve to be processed is vertically placed into the screw sleeve placing cylinder 41 through the front side, the rotating motor 2 is started to drive the rotating disc 4 to rotate, and then the screw sleeve placing cylinder 41 is rotated to be below the thread forming knife 14 in sequence, so as to be processed; when the single screw sleeve placing cylinder 41 rotates to the area of the extrusion arc plate 3, the extrusion arc plate 3 can gradually extrude the extrusion ball head 72 through the guide slope 31, so that the toothed rod 71 moves inward, and then drives the control ring 6 to rotate through the meshing of the toothed rod 71 and the protruding teeth 62; at this time, the three clamping blocks 5 are synchronously pushed to the center through the connecting rod 9, so as to clamp and fix the screw sleeve, so as to ensure that the screw sleeve is placed at the center position of the screw sleeve placing cylinder 41, thereby ensuring the accurate positioning during processing;

[0038] After the processing is completed, the processed screw sleeve will rotate forward with the rotating disc 4, and when it exceeds the range of the extrusion arc plate 3, due to the existence of the spring 8, the slide rod 7 can return to the original position and then drive the three clamping blocks 5 to expand outward, so as to facilitate the up-down screwing of the screw sleeve; the extrusion ball head 72 and the slide rod 7 are threadedly and rotatably installed, so as to adjust the position of the extrusion ball head 72, and the self-locking property of the thread is utilized to keep fixed, so as to adjust the initial position of the clamping block 5, and the processing of screw sleeves of different sizes is applicable.

[0039] The above merely describes preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application. Structures, devices and operation methods not specifically described and explained in the present application are implemented according to conventional means in the art, unless otherwise specified and limited.

Claims

1. A positioning device for machining threaded sleeves, comprising a worktable (1), a gantry frame (11) fixed to the rear side of the upper surface of the worktable (1), a control cylinder (13) fixed to the top of the gantry frame (11), a lifting plate (12) slidably mounted on the inner side of the gantry frame (11), and the output end of the control cylinder (13) fixed to the upper surface of the lifting plate (12), characterized in that: A thread forming knife (14) is installed at the center of the lower surface of the lifting plate (12). A rotary motor (2) is fixed on the lower surface of the worktable (1). A turntable (4) is installed at the output end of the rotary motor (2). The turntable (4) is placed on the upper surface of the worktable (1). Eight thread sleeve placement cylinders (41) are evenly arranged on the surface of the turntable (4) with its rotation axis as the center. The top of the thread sleeve placement cylinder (41) is open. Three mounting grooves (42) are evenly opened on the inner wall of the thread sleeve placement cylinder (41). A clamping block (5) is slidably installed on the inner side of the mounting groove (42). The three clamping blocks (5) are used to center and clamp the thread sleeves placed on the inner side. The thread sleeve placement cylinder (41) rotates sequentially to directly below the thread forming knife (14). A centering linkage mechanism is provided on the outer side of the thread sleeve placement cylinder (41). The centering linkage mechanism is used to synchronously control the movement of the three clamping blocks (5).

2. The positioning device for threaded sleeve processing according to claim 1, characterized in that: The three clamping blocks (5) have anti-slip texture (51) rolled on the side surface that is close to each other. An extension plate (52) is provided laterally on the outside of the clamping block (5). The extension plate (52) penetrates the outer surface of the screw sleeve placement cylinder (41).

3. The positioning device for machining threaded sleeves according to claim 2, characterized in that: The centering linkage mechanism includes a slide rod (7) and a control ring (6) that rotates outside the screw sleeve placement cylinder (41). Three fixing bolts (61) are evenly arranged on the upper surface of the control ring (6). The three fixing bolts (61) are hinged to the surfaces of the three fixing bolts (61). The end of the connecting rod (9) away from the fixing bolt (61) is hinged to the end of the extension plate (52).

4. A positioning device for machining threaded sleeves according to claim 3, characterized in that: The upper surface of the turntable (4) is evenly provided with 8 sets of bosses (43). Each set of bosses (43) has two bosses and is placed on one side of the mounting groove (42). The slide rod (7) slides through the two bosses (43) in the same set.

5. A positioning device for threaded sleeve processing according to claim 4, characterized in that: The control ring (6) has protruding teeth (62) evenly arranged on one side, and the slide rod (7) has a toothed bar (71) on its surface. The toothed bar (71) meshes with the protruding teeth (62). The outer end of the slide rod (7) is screwed with a pressing ball head (72). The pressing ball head (72) extends beyond the outer surface of the turntable (4). The upper surface of the worktable (1) is welded with a pressing arc plate (3).

6. A positioning device for threaded sleeve processing according to claim 5, characterized in that: The extrusion arc plate (3) is placed on the rear side of the turntable (4) and coincides with the center of the turntable (4). The turntable (4) has guide slopes (31) at both ends. The extrusion ball head (72) placed on the rear side is extruded by the extrusion arc plate (3) and moves towards the center of the turntable (4).

7. A positioning device for machining threaded sleeves according to claim 5, characterized in that: A spring (8) is sleeved on the surface of the slide bar (7). The spring (8) is placed between the toothed bar (71) and the boss (43), and the spring (8) is placed on the side of the toothed bar (71) away from the extrusion ball head (72).

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