Horizontal bolt ball processing machine tool

Abstract

A control system of the horizontal bolt ball machining machine tool electrically controls a main shaft, a tool magazine, a tool changing device and a workpiece carrier device. The spindle is provided with cutting tools, the tool changer exchanges tool magazines or spindle tools through a tool changing frame, and the workpiece carrier device linearly reciprocates relative to the spindle. The device comprises a slide carriage, the slide carriage is provided with a rotating table and a first locking device, a vertical seat on the rotating table is provided with a fixer and a second locking device, and the center of a bolt ball, the axis of a spindle and the axis of a tool magazine replacement tool are on the same horizontal plane. Different from a common lathe, the machine tool spindle is used for fixing a cutter, the bolt ball is fixed on the slide carriage, and the slide carriage can be adjusted in multiple degrees of freedom. On the basis of multiple degrees of freedom of motion, bolt balls can be automatically machined, and intelligent turning is achieved by means of the rotary tool magazine and the tool changing device.

Description

Technical Field

[0001] This utility model relates to the field of bolt ball processing, and in particular to a horizontal bolt ball processing machine tool. Background Technology

[0002] Space frame bolt balls play a crucial role in space frame engineering, serving to connect the space frame's connecting rods. As a key node in the overall space frame structure, the dimensional accuracy of the bolt balls is critical.

[0003] Currently, there are many specialized processing equipment for mass production of bolt balls; however, these machines are expensive and do not fully utilize existing equipment. Because the aforementioned automated equipment is highly concentrated and suitable for large-scale bolt ball production, there are currently no suitable automated machine tools for small-batch production.

[0004] In order to solve the problem of high cost of special equipment in the current field of bolt ball processing, and to find a solution suitable for small-batch automated processing of bolt balls, this utility model proposes the following solution. Utility Model Content

[0005] This utility model provides a horizontal bolt ball processing machine tool to solve the problem of small-batch automated processing of bolt balls. To achieve the above objective, this utility model adopts the following technical solution:

[0006] A horizontal bolt ball machining machine tool, including a control system;

[0007] The control system electrically controls the spindle, tool magazine, tool changer, and workpiece carrier device;

[0008] Cutting tools are mounted on the spindle;

[0009] The tool changing device achieves tool exchange between the tool magazine and the spindle through a tool changing holder. The workpiece carrier device drives the slide through a lead screw to achieve linear reciprocating motion relative to the spindle; the device includes a slide with a rotary table driven by a first drive device and capable of horizontal circular rotation, and a first locking device for limiting the circular motion of the rotary table.

[0010] A vertically fixed stand is provided on the rotary worktable. The stand is equipped with a retainer that is driven by a second driving device and carries a bolt ball for circumferential rotation. The stand is also equipped with a second locking device that restricts the rotation of the retainer.

[0011] The center of the bolt ball, the axis of the spindle, and the axis of the tool magazine replacement tool are on the same horizontal plane.

[0012] Furthermore, a tightening or loosening device for mounting or dismounting bolt balls is provided at the end of the workpiece carrier device, away from the main shaft.

[0013] Furthermore, the tool changing device includes a telescopic and rotatable tool changing main control shaft, and a rod-shaped tool changing holder is provided at the end of the tool changing main control shaft. Tool slots with openings are provided symmetrically at both ends of the tool changing holder, and elastic locking pins for locking the tool are provided at the openings of the tool slots.

[0014] Furthermore, the rotary gear of the rotary table meshes with the drive worm gear, and the drive worm gear is connected to the drive end of the first servo motor.

[0015] Furthermore, the first locking device includes: an annular first locking disc covering the outer edge of the rotating part of the rotary table; one bottom surface of the first locking disc is connected to a slide via an adjusting bolt, a first support ball, and a first support as fulcrums; a first telescopic mechanism is provided on the other edge of the first locking disc, the telescopic rod of the first telescopic mechanism providing support for the separation of the first locking disc and the rotary table; a first limiting rod passes through the middle of the edge of the first locking disc, and a first compression spring is connected to the first limiting rod.

[0016] Furthermore, the first telescopic mechanism is a hydraulically driven telescopic rod, the telescopic rod body is fixed to the first locking disc, the telescopic end is in direct contact with the slide, and the hydraulic system of the first telescopic mechanism is electrically connected to the control system.

[0017] The first limiting rod has a first compression spring strung on its "T"-shaped structure; the first limiting rod passes through the edge of the first locking disc and is fixed to the surface of the slide.

[0018] Furthermore, the second locking device includes: a second locking disc pressed against the edge of the fixing device; a second telescopic structure provided on the second locking disc, the telescopic end of the second telescopic structure passing through the second locking disc and contacting the stand; a second limiting rod passing through the second locking disc fixed on the stand, and a second compression spring in a compressed state provided between the boss of the "T"-shaped structure of the second limiting rod and the second locking disc.

[0019] Furthermore, the external gear of the fixture meshes with the first gear and the second gear in sequence; the second gear is coaxially fixed with the first bevel gear; the first bevel gear and the second bevel gear mesh, and the second bevel gear and the second servo motor are connected for transmission.

[0020] Furthermore, the fixture rotates relative to the stand, and the center of the fixture has a through hole through which the screw passes and is detachably connected to the bolt ball.

[0021] Furthermore, the tightening device includes: a power device that rotates in both directions; the end of the torque output end of the power device matches the tail end of the screw connecting the bolt ball; the power device is fixed on a slide, and the slide performs a linear reciprocating motion over a limited distance relative to the bracket fixed on the machine tool body.

[0022] Compared with the prior art, this utility model has the following advantages: Compared with traditional lathes, in this solution, the spindle is only fixed to the cutting tool, and the bolt ball is fixed to the slide. The slide achieves multi-degree-of-freedom adjustment through structures such as the rotary table and the retainer, which facilitates the processing of bolt balls that meet the design requirements of the space frame.

[0023] This invention, based on multiple degrees of freedom of motion such as the rotary table and slide, enables automated machining of bolt balls. Simultaneously, an auxiliary rotary tool magazine and tool changer enable a more intelligent bolt ball machining lathe. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the machine tool body in this utility model;

[0025] Figure 2 This is a schematic diagram of the machine tool body from another angle;

[0026] Figure 3 This is a schematic diagram of the slide structure;

[0027] Figure 4 for Figure 3 The front view;

[0028] Figure 5 This is a schematic diagram of the structure of the first locking disc;

[0029] Figure 6 A schematic diagram showing the layout of the tool magazine, machine tool body, and tool changing device;

[0030] Figure 7 This is a schematic diagram of the tool slot on the tool changer.

[0031] Figure 8 This is a schematic diagram of the tensioning device.

[0032] 1 Machine tool body, 10 Spindle, 11 Lead screw, 12 Slide, 121 Slide groove, 2 Rotary worktable, 21 First worm gear, 3 First locking disc, 30 Friction belt, 31 First support, 310 First support ball, 311 Adjusting bolt, 32 First pressure mechanism, 321 First limit rod, 322 First compression spring, 33 First telescopic mechanism, 41 Fixed seat, 42 Stand, 421 Transmission bracket, 5 Second locking disc, 51 Second telescopic structure, 52 Second compression spring, 61 Fixer, 62 First gear, 63 Second gear, 64 Third gear, 65 First bevel gear, 66 Second bevel gear, 67 Transmission shaft, 7 Tool magazine, 71 Tool changing main control spindle, 72 Tool changing post, 721 Tool groove, 722 Locking pin, 73 Tool, 8 Bolt ball, 9 Tightening device, 91 Bracket, 92 Slide, 921 Stop, 93 Pulley, 94 Power equipment. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0034] like Figures 1 to 8 As shown, a horizontal bolt ball machining machine tool includes a control system, which is a CNC numerical control control system. The control system electrically controls the spindle 10, tool magazine 7, tool changing device, and workpiece carrier device. Cutting tools are mounted on the spindle 10, mainly including special-purpose tools for bolt ball machining, such as twist drills and milling cutters. The cutting tools are mounted on the spindle 10, and the rotation of the spindle 10 drives the tools to rotate. The control system controls the spindle 10 speed and thus the tool speed through internally set parameters. The tool magazine 7 is a horizontal disc tool magazine from Okada Intelligent (Jiangsu) Co., Ltd., which is equipped with a tool changing device for exchanging tools between the tool magazine and the machine tool spindle 10. The tool changing device includes a telescopic and rotating tool changing main control spindle 71. A rod-shaped tool changing holder 72 is provided at the end of the tool changing main control spindle 71. Opening tool slots 721 are symmetrically arranged at both ends of the tool changing holder 72, and elastic locking pins 722 are provided at the openings of the tool slots 721 to hold the tools 73. The target tool in the tool magazine 7 and the tool on the spindle 10 are replaced by rotating the tool changer 72. The tool changer is a tool changer integrated into the horizontal disc tool magazine of Okada Intelligent (Jiangsu) Co., Ltd., which will not be described in detail here.

[0035] The tool changing device exchanges tools on the tool magazine 7 or the spindle 10 via the tool changing holder 72;

[0036] The workpiece carrier device reciprocates linearly relative to the main shaft 10. Specifically, this is achieved by driving the linear motion of the slide 12 through the rotation of the lead screw 11. The workpiece carrier device includes: a slide 12, on which a rotary table 2 driven by a first driving device to perform horizontal circular rotation and a first locking device that restricts the circular rotation are provided. The first locking device includes: an annular first locking disc 3 covering the outer edge of the rotating part of the rotary table 2; one bottom surface of the first locking disc 3 is connected to the slide plate 12 by adjusting bolt 311, first support ball 310, and first support 31 as fulcrums. The length of the adjusting bolt 311 extending relative to the first locking disc 3 directly affects the distance between the first locking disc 3 and the outer edge of the rotating part of the rotary table 2. When the combined height of adjusting bolt 311, first support ball 310, and first support 31 is large, the corresponding distance between the first locking disc 3 and the outer edge of the rotating part of the rotary table 2 is large, and vice versa; the other edge of the first locking disc 3 is provided with a first telescopic mechanism 33. The telescopic rod of the first telescopic mechanism 33 provides support for the separation of the first locking disc 3 and the rotary table 2. When the first locking disc 3 and the rotary table 2 are in close contact, the friction strip 30 of the first locking disc 3 directly contacts the edge of the rotary table 2, preventing the movement of the rotary table 2. A first limiting rod 321 passes through the center of the edge of the first locking disc 3, and a first compression spring 322 is threaded through the first limiting rod 321. The first telescopic mechanism 33 is a hydraulically driven telescopic rod. The telescopic rod body is fixed to the first locking disc 3, and the telescopic end directly contacts the slide plate 12. The hydraulic system of the first telescopic mechanism is electrically connected to the control system. The first compression spring 322 is threaded through the "T"-shaped structure of the first limiting rod 321; the first limiting rod 321 passes through the edge of the first locking disc 3 and is fixed to the surface of the slide plate 12.

[0037] like Figure 3 The rotary table 2 is provided with a gear that drives the rotary working part to rotate, and a first worm gear that meshes with the gear. The first worm gear is connected to the drive end of the first servo motor.

[0038] The rotary table 2 has a vertically fixed support 42 for its rotating part. The support 42 is equipped with a fixture 61 that is driven by a second drive device and carries a bolt ball 8 for circumferential rotation. The fixture 61 has a hollow through-hole structure in the middle, facilitating the connection and fixation of the screw and bolt ball 8 within the through-hole. The fixture 61 rotates relative to the support 42. The center of the fixture 61 is the through-hole through which the screw passes and is detachably connected to the bolt ball 8. The external gear of the fixture 61 meshes sequentially with a first gear 62 and a second gear 63. A first bevel gear 65 is coaxially fixed to the second gear 63. The first bevel gear 65 meshes with a second bevel gear 66, which is connected to a second servo motor.

[0039] The stand 42 is also provided with a second locking device to restrict the rotation of the retainer 61; the second locking device includes: a second locking disc 5 pressing on the edge of the retainer 61; the second locking disc 5 is provided with a second telescopic structure 51, the telescopic end of the second telescopic structure 51 passes through the second locking disc 5 and contacts the stand 42; a second limiting rod 521 passing through the second locking disc 5 is fixed on the stand 42, and a second compression spring 52 in a compressed state is provided between the "T"-shaped boss of the second limiting rod 521 and the second locking disc 5.

[0040] The center of the bolt ball 8, the axis of the spindle 10, and the axis of the tool magazine 7 for replacing tools are on the same horizontal plane. When they are on the same horizontal plane, it not only facilitates the machining of the bolt ball but also ensures that the tools used on the spindle 10 and the tools to be replaced in the tool magazine can be changed simultaneously. To better install or remove the machined bolt ball 8, a tightening or loosening device is provided at the end of the workpiece carrier device, away from the spindle 10. A schematic diagram of the tightening device is shown below. Figure 8 As shown. The tensioning device includes: a forward and reverse power device 94, which can be an electric forward and reverse motor or a forward and reverse pneumatic wrench; the end of the torque output end of the power device 94 matches the tail end of the screw of the connecting bolt ball 8, and the end is also a hexagonal internal angle, and the end of the screw is a groove that matches the internal hexagonal angle. The power device 94 is fixed on the slide 92, and the slide 92 performs a limited linear reciprocating motion relative to the bracket 91 fixed on the machine tool body 1. There is a certain distance between the slide 92 and the bracket 91. In order to ensure that the slide 92 can slide smoothly in a linear reciprocating motion, the edge of the slide 92 is locked in the pulley 93 with a concave structure. A stop block 921 is fixed on the bottom surface of the slide 92. The stop block 921 passes through the bracket 91, and the bracket 91 has a straight waist hole. The stop block 921 is inserted into the waist hole and performs a limited linear motion.

[0041] The advantages of this invention are: the machine tool in this solution is based on a modified lathe. Compared with a general lathe, the spindle in this solution is equipped with 10 cutting tools but not workpieces. By utilizing the advantages of the lathe, and modifying the rotary table, the spindle motor, and the tool magazine, a used lathe can be transformed into a machine specifically for machining bolt balls.

[0042] The motion mechanism in this scheme includes: a rotary table 2 that rotates based on a horizontal plane, a linear reciprocating slide 12, and a circumferential rotation of a fixture 61. Under the action of the control system, the above motion mechanism provides sufficient degrees of freedom for the bolt ball 8 fixed on the fixture 61.

[0043] To restrict the rotation of the retainer 61, when the free end of the first telescopic structure 33 retracts, the second compression spring 52 keeps the second locking disc 5 in contact with the retainer 61, limiting the rotation of the retainer 61 through static friction. When the retainer 61 needs to rotate, the telescopic end of the second telescopic structure 51 extends, separating the second locking disc 5 from the retainer 61. After separation, the retainer 61 is driven to rotate by the second servo motor and gears, which in turn drives the bolt ball 8 to rotate.

[0044] When it is necessary to lock the retainer 61, the telescopic end of the second telescopic structure 51 retracts, the second locking disc 5 contacts the retainer 61, and static friction is used to prevent the retainer 61 from rotating.

Claims

1. A horizontal bolt ball processing machine tool, characterized by, Including control systems; The control system includes an electrically controlled spindle (10), a tool magazine (7), a tool changer, and a workpiece carrier device; Cutting tools are mounted on the spindle (10); The tool changing device exchanges tools on the tool magazine (7) or the spindle (10) via the tool changing holder (72); The workpiece carrier device reciprocates linearly relative to the main shaft (10); the workpiece carrier device includes: a slide (12), on which a rotary table (2) driven by a first driving device to make horizontal circular rotation and a first locking device to restrict the circular rotation device are provided. A vertical fixed stand (42) is provided on the rotary worktable (2). The stand (42) is provided with a fixture (61) that is driven by a second driving device and carries a bolt ball (8) to rotate in a circular motion. The stand (42) is also provided with a second locking device that restricts the rotation of the fixture (61). The center of the bolt ball (8), the axis of the spindle (10), and the axis of the tool magazine (7) for replacing the tool are on the same horizontal plane.

2. The horizontal bolt ball machine according to claim 1, wherein: A tightening device for installing or removing bolt balls (8) is provided at the end of the workpiece carrier device, away from the main shaft (10) and at the moving end of the workpiece carrier device.

3. The horizontal bolt ball machine according to claim 1, wherein: The tool changing device includes a telescopic and rotatable tool changing main control shaft (71), and a rod-shaped tool changing frame (72) is provided at the end of the tool changing main control shaft (71). Tool grooves (721) with openings are provided symmetrically at both ends of the tool changing frame (72), and elastic locking pins (722) are provided at the opening of the tool grooves (721) to lock the tool (73).

4. The horizontal bolt ball machine according to claim 1, wherein: The rotary table (2) has a rotary gear and a drive worm engaged, and the drive worm is connected to the drive end of the first servo motor.

5. The horizontal bolt ball machine according to claim 1, wherein: The first locking device includes: an annular first locking disc (3) covering the outer edge of the rotating part of the rotary table (2); the bottom surface of one side of the first locking disc (3) is connected to the slide (12) by adjusting bolt (311), first support ball (310), first support (31) as fulcrum; the other side edge of the first locking disc (3) is provided with a first telescopic mechanism (33), the telescopic rod of the first telescopic mechanism (33) provides support force for the separation of the first locking disc (3) and the rotary table (2); a first limiting rod (321) runs through the middle of the edge of the first locking disc (3), and a first compression spring (322) is connected to the first limiting rod (321).

6. The horizontal screw ball machine of claim 5, wherein: The first telescopic mechanism (33) is a hydraulically driven telescopic rod, which is fixed to the first locking disc (3). The telescopic end is in direct contact with the slide (12). The hydraulic system of the first telescopic mechanism is electrically connected to the control system. The first limiting rod (321) has a first compression spring (322) strung on its "T"-shaped structure; the first limiting rod (321) passes through the edge of the first locking disc (3) and is fixed to the surface of the slide (12).

7. The horizontal bolt ball machine according to claim 1, wherein: The second locking device includes: a second locking disc (5) pressed against the edge of the fixing device (61); a second telescopic structure (51) is provided on the second locking disc (5), the telescopic end of the second telescopic structure (51) passes through the second locking disc (5) and contacts the stand (42); a second limiting rod (521) passing through the second locking disc (5) is fixed on the stand (42), and a second compression spring (52) in a compressed state is provided between the boss of the "T"-shaped structure of the second limiting rod (521) and the second locking disc (5).

8. The horizontal bolt ball machine according to claim 1, wherein: The external gear of the fixture (61) meshes with the first gear (62) and the second gear (63) in sequence; the second gear (63) is coaxially fixed with the first bevel gear (65); the first bevel gear (65) meshes with the second bevel gear (66), and the second bevel gear (66) is connected to the second servo motor.

9. The horizontal bolt ball machine according to claim 1 or 2, wherein: The fixture (61) rotates relative to the stand (42). The center of the fixture (61) is a through hole, and the screw passes through the through hole and is detachably connected to the bolt ball (8).

10. The horizontal bolt ball machine according to claim 2, wherein: The tightening device includes: a forward and reverse power device (94); the end of the torque output end of the power device (94) matches the tail end of the screw of the connecting bolt ball (8); the power device (94) is fixed on the slide (92), and the slide (92) moves in a linear reciprocating motion over a limited distance relative to the bracket (91) fixed on the machine tool body (1).

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