A pipe auxiliary support fixture for machine tools and machine tool

Abstract

A pipe auxiliary support fixture for machine tools and a machine tool. The present invention fixes each slider by the cooperation between a rotating shaft end fixing plate, a limit stopper, a guide shaft, a linear bearing, an X-axis end fixing plate, and a slider fixing seat, so that the slider can be arranged along the guide shaft between the spring chuck and the bushing of the machine tool, so as to provide support and support for the middle part of the workpiece through the support sleeve on the top of the slider. The present invention can ensure that the machine tool can firmly clamp the workpiece and accurately position the workpiece during the process of processing precision thin-walled tubes with an outer diameter of less than 1 mm, so that the processing of the workpiece is more stable and reliable. The present invention can avoid the problems of tube depression and docking misalignment that occur in conventional positioning and clamping of the workpiece and continuous processing by supporting the sleeve and the slider. The present invention can realize the processing of precision thin-walled tubes with an outer diameter of less than 1 mm, and also provides a certain reference and reference for the processing of other similar small rotating parts.

Description

Technical Field

[0001] The invention relates to the field of laser processing equipment, and in particular to a pipe auxiliary supporting fixture for a machine tool and a machine tool. Background Art

[0002] As a precision professional tool used by CNC machine tools to control the position and movement of workpieces, the quality of the workpieces is directly determined by the quality of its design and processing accuracy. With the rapid development of Industry 4.0 technology, the processing requirements and production requirements for precision parts, especially for low-rigidity, high-flexibility, slender, thin-walled tubular parts, are gradually increasing. Conventional clamping support methods and processing technologies can no longer meet the clamping and processing of small workpieces such as precision thin-walled tubes with an outer diameter of less than 1mm. The field of ultra-micro processing technology is increasingly becoming the focus and difficulty of research in the field of precision manufacturing.

[0003] The traditional clamping method for pipe processing is basically to clamp and fix one end of the pipe, and use a sleeve with the same outer diameter as the pipe for auxiliary support at the other end of the pipe. However, for low-rigidity, high-flexibility, slender, thin-walled tubular parts, if the above clamping method is used, the pipe between the clamping end and the support end will sag in a free state under the action of gravity during the processing of the workpiece. Due to the insufficient rigidity of the workpiece, it is easily affected by gravity during the processing, causing disturbance deformation, and it is easy to dent if it cannot maintain a taut state. The dents of the pipe to be processed can easily cause serious axial deviations of the rotating axis during the processing feed process, seriously affecting the processing accuracy and processing quality. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a pipe auxiliary support fixture for machine tools and a machine tool. The present invention adopts a modular design so that the support length of the pipe auxiliary support fixture for machine tools can be increased or decreased arbitrarily according to the length of the pipe and the machine tool, and the pipe auxiliary support fixture for machine tools can move synchronously with the clamping rotating axis of the machine tool, thereby avoiding the problem of disturbance deformation of the pipe due to insufficient rigidity during processing, which affects the processing accuracy and quality. The present invention provides the following technical solutions for the precise processing of low-rigidity, high-flexibility, slender, thin-walled tubular parts.

[0005] Firstly, in order to achieve the above-mentioned purpose, a pipe auxiliary support fixture for machine tools is proposed, which includes:

[0006] A rotating shaft end fixing plate, which is arranged at one end of the pipe auxiliary support fixture for the machine tool, installed above the X-axis motion platform of the machine tool and fixedly connected to the rotating shaft of the machine tool;

[0007] A limit stopper, which is arranged at the other end of the machine tool pipe auxiliary support fixture, is installed above the X-axis motion platform of the machine tool and is fixedly connected to the two-dimensional adjustment seat of the machine tool;

[0008] A guide shaft, which is connected between the rotating shaft end fixing plate and the limit stopper along the X-axis direction of the machine tool, and whose two ends are fixedly connected to the rotating shaft end fixing plate and the limit stopper respectively;

[0009] A linear bearing connected to the guide shaft, disposed between a fixed plate at the end of the rotating shaft and a limit stopper, and capable of moving along the guide shaft;

[0010] An X-axis end fixing plate, which is fixedly connected to the linear bearing, is arranged at the rear end of the X-axis motion platform of the machine tool, and moves synchronously with the linear bearing;

[0011] A slider fixing seat, which is connected to the guide shaft, is arranged between the rotating shaft end fixing plate and the X-axis end fixing plate, and can move along the guide shaft;

[0012] Slide blocks, including a plurality of slide blocks disposed along the guide axis between the slide block fixing seat and the X-axis end fixing plate, each slide block being capable of moving along the guide axis;

[0013] Support sleeves, which are respectively arranged on the top of each slider, and each support sleeve has a support hole arranged along the axial direction of the guide shaft for the workpiece to pass through;

[0014] The workpiece passes through the supporting sleeves arranged on the top of each slide block in sequence along the guide shaft, and is lifted between the spring chuck and the bushing of the machine tool by the supporting holes of the supporting sleeves.

[0015] Optionally, a pipe auxiliary support jig for machine tools as described above is further connected between the slider and the support sleeve, and the adjusting screw rotates on the slider, and the support sleeve moves inside the slider along with the rotation of the adjusting screw, thereby adjusting the support hole to a position coaxial with the workpiece.

[0016] Optionally, a pipe auxiliary support jig for machine tools as described in any of the above, wherein the adjusting screw includes a first adjusting screw vertically arranged above the top of the slider and a second adjusting screw horizontally arranged on the side of the top of the slider, the first adjusting screw and the second adjusting screw are respectively connected to the top and side of the support sleeve, the first adjusting screw rotates above the top of the slider to drive the support sleeve to move vertically up and down along the slider, and the second adjusting screw rotates on the side of the top of the slider to drive the support sleeve to move horizontally forward and backward along the slider.

[0017] Optionally, a pipe auxiliary support jig for machine tools as described in any of the above, wherein the slider includes a first slider, a second slider, a third slider and a fourth slider which are sequentially arranged along the guide axis between the slider fixing seat and the X-axis end fixing plate, wherein the bottom front end of the first slider is fixedly connected to the slider fixing seat, and the fourth slider is fixedly connected to the X-axis end fixing plate; movable connecting rods are also respectively connected between the first slider, the second slider, the third slider and the fourth slider, and the movable connecting rod is supported between the first slider, the second slider, the third slider and the fourth slider, and drives the first slider, the second slider, the third slider and the fourth slider to be evenly arranged along the guide axis between the slider fixing seat and the X-axis end fixing plate as the slider fixing seat moves back and forth.

[0018] Optionally, in any of the above-described pipe auxiliary support jigs for machine tools, the movable connecting rod comprises:

[0019] A first movable link, a front end of which is connected to the bottom of the first slider, and a rear end of which is connected to the middle of the second slider;

[0020] A second movable link, a front end of which is connected to the middle of the first slider, and a rear end of which is connected to the bottom of the second slider;

[0021] A third movable link, a front end of which is connected to the bottom of the second slider, and a rear end of which is connected to the middle of the third slider;

[0022] a fourth movable link, a front end of which is connected to the middle of the second slider, and a rear end of which is connected to the bottom of the third slider;

[0023] a fifth movable link, a front end of which is connected to the bottom of the third slider, and a rear end of which is connected to the middle of the fourth slider;

[0024] The sixth movable connecting rod has a front end connected to the middle of the third sliding block, and a rear end connected to the bottom of the fourth sliding block.

[0025] Optionally, the pipe auxiliary support jig for machine tools as described above is characterized in that a fixing hole is also provided on the slider fixing seat, and a screw passes through the fixing hole to fix the slider fixing seat and the guide shaft to limit the movement of the slider fixing seat along the guide shaft.

[0026] Optionally, the pipe auxiliary support jig for machine tools as described above further includes a position fixing block, the front end of the position fixing block is fixedly connected to the fourth sliding block, and the rear end of the position fixing block is fixedly connected to the X-axis end fixing plate.

[0027] At the same time, the present invention also provides a machine tool, on which is provided any of the above-described pipe auxiliary support jigs for machine tools.

[0028] Beneficial Effects

[0029] The present invention fixes each slider by the cooperation between the rotating shaft end fixing plate, the limit stopper, the guide shaft, the linear bearing, the X-axis end fixing plate, and the slider fixing seat, so that the slider can be arranged along the guide shaft between the spring chuck and the bushing of the machine tool, so as to provide lifting and support for the middle part of the workpiece through the support sleeve on the top of the slider. The present invention can ensure that the machine tool can firmly clamp the workpiece and accurately position the workpiece during the process of processing precision thin-walled tubes with an outer diameter of less than 1 mm, so that the processing of the workpiece is more stable and reliable. The present invention can avoid the problems of pipe depression and docking misalignment that occur in conventional positioning and clamping of the workpiece and continuous processing by supporting the sleeve and the slider. The present invention can realize the processing of precision thin-walled tubes with an outer diameter of less than 1 mm, and also provides a certain reference and reference for the processing of other similar small rotating parts.

[0030] Furthermore, the present invention also provides two mutually perpendicular adjustment screws on the top of the slider, which can accurately adjust the support sleeve to be coaxial with the workpiece. Therefore, the present invention can keep the workpiece in a horizontal and horizontal straight state throughout the entire processing process through the support of the sleeve, and evenly support the middle of the workpiece through the support of the sleeve, thereby minimizing the disturbance deformation of the workpiece.

[0031] At the same time, the present invention provides multiple groups of cross-connected movable links between the sliders, and the movable links can be contracted or expanded accordingly with the movement of the sliders. Since the movable links are of the same size and are arranged at the same height, the spacing between the sliders can be ensured to be equal, thereby providing support for the workpiece in a uniformly distributed manner in the middle of the workpiece. This support method can further avoid local deformation of the workpiece, and the sliders can move accordingly according to the processing needs of the workpiece, but during the movement, the sliders can maintain the same spacing through the movable links, so the present invention can further ensure the accuracy and stability of the entire processing process.

[0032] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 It is a structural schematic diagram of the pipe auxiliary support fixture for machine tools of the present invention;

[0035] Figure 2 It is a schematic diagram of the supporting method of the pipe auxiliary supporting jig for machine tools of the present invention;

[0036] In the figure, 1 represents a rotating shaft end fixing plate; 2 represents a supporting sleeve; 3 represents a first slider; 4 represents an adjusting screw; 5 represents a second slider; 6 represents a third slider; 7 represents a fourth slider; 8 represents a linear bearing; 9 represents a limit stopper; 10 represents a guide shaft; 11 represents an X-axis end fixing plate; 12 represents a position fixing block; 13 represents a pin screw; 14 represents a movable connecting rod; 15 represents a slider fixing seat; 16 represents a sliding rod; 17 represents an X-axis motion platform; 18 represents a rotating shaft; 19 represents a spring chuck; 20 represents a workpiece; 21 represents a bushing; and 22 represents a two-dimensional adjustment seat. DETAILED DESCRIPTION

[0037] In order to make the purpose and technical solution of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as generally understood by those skilled in the art in the field to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0039] The meaning of "inside" and "outside" in the present invention refers to the direction pointing to the inside of the slider relative to the machine tool pipe auxiliary support fixture itself, and the opposite direction is outside; it is not a specific limitation on the device mechanism of the present invention.

[0040] The meaning of "front and rear" in the present invention refers to that when the user is facing the pipe auxiliary support fixture for machine tools, the direction from the rotating shaft end fixing plate to the limit stop block is the rear, and the opposite direction is the front, rather than a specific limitation on the device mechanism of the present invention.

[0041] The term “connection” as used in the present invention may mean a direct connection between components or an indirect connection between components via other components.

[0042] The meaning of "up" and "down" in the present invention refers to that when the user is facing the pipe auxiliary support fixture for a machine tool, the direction from the machine tool to the user is up, and the direction opposite to the machine tool is down, rather than a specific limitation on the device mechanism of the present invention.

[0043] Figure 1According to the present invention, a pipe auxiliary support fixture for machine tools is provided. Figure 2 The method shown is arranged on a machine tool including a bed, an X-axis motion platform 17, a rotating shaft 18, a spring chuck 19, a bushing 21 and a two-dimensional adjustment seat 22. The X-axis motion platform is arranged on the bed of the machine tool; the rotating shaft 18 is arranged on the X-axis motion platform so as to be reciprocatingly movable along the X-axis direction; the two-dimensional adjustment seat 22 is at the rear end of the X-axis motion platform and is used to adjust the workpiece in the horizontal and vertical directions perpendicular to the X-axis. A mounting seat and a guide sleeve are arranged on the two-dimensional adjustment seat 22, and the guide sleeve is assembled on the mounting seat, and the mounting seat is fixedly connected to the two-dimensional adjustment seat 22.

[0044] The pipe auxiliary support fixture of the present invention is composed of a rotating shaft end fixing plate, an X-axis end fixing plate, a slider, a movable connecting rod, a slide rod, a support sleeve, a linear bearing and a guide shaft, etc. It adopts an overall modular design. The first end of the pipe auxiliary support fixture is set on the rotating shaft, and the second end of the pipe auxiliary support fixture is set at the end of the X-axis motion platform. It is configured to be able to reciprocate synchronously with the rotating shaft on the X-axis. Figure 1 As shown, the pipe auxiliary support fixture can be specifically configured to include:

[0045] A rotating shaft end fixing plate 1, which is arranged at one end of the pipe auxiliary support fixture for the machine tool, installed above the X-axis motion platform 17 of the machine tool and fixedly connected to the rotating shaft 18 of the machine tool;

[0046] A limit stopper 9 is arranged at the other end of the machine tool pipe auxiliary support fixture, installed above the X-axis motion platform 17 of the machine tool and fixedly connected to the two-dimensional adjustment seat 22 of the machine tool;

[0047] A guide shaft 10, which is connected between the rotating shaft end fixing plate 1 and the limit stopper 9 along the X-axis direction of the machine tool, and whose two ends are fixedly connected to the rotating shaft end fixing plate 1 and the limit stopper 9 respectively;

[0048] A linear bearing 8, which is connected to the guide shaft 10, is disposed between the rotating shaft end fixing plate 1 and the limit stopper 9, and can move along the guide shaft 10;

[0049] An X-axis end fixing plate 11, which is fixedly connected to the linear bearing 8, is disposed at the rear end of the X-axis motion platform 17 of the machine tool, and moves synchronously with the linear bearing 8;

[0050] A slider fixing seat 15, which is connected to the guide shaft 10, is disposed between the rotating shaft end fixing plate 1 and the X-axis end fixing plate 11, and can move along the guide shaft 10;

[0051] Slide blocks, including a plurality of slide blocks disposed between the slide block fixing seat 15 and the X-axis end fixing plate 11 along the guide shaft 10, each slide block being capable of moving along the guide shaft 10;

[0052] A support sleeve 2, which is respectively arranged on the top of each slider, and each support sleeve 2 has a support hole arranged along the axial direction of the guide shaft 10 for the workpiece 20 to pass through;

[0053] The workpiece passes through the supporting sleeves 2 arranged on the top of each slider in sequence along the guide shaft 10, and is lifted between the spring chuck 19 and the bushing 21 of the machine tool by the supporting holes of the supporting sleeves 2.

[0054] Therefore, the present invention installs the linear bearing 8 on the X-axis end fixed plate 11, sets two guide shafts 10 to pass through the linear bearing 8, and connects the two ends of the guide shaft 10 to the rotating shaft end fixed plate 1 and the limit block 9 respectively; sets the mounting holes under each slider to pass through the guide shaft 10 in turn, and form a sliding fit with the guide shaft 10, so that the slider can move to a suitable position along the guide shaft 10. The slider fixing seat 15 of the pipe auxiliary support fixture is fixed on the slider at the front end to facilitate the adjustment of the position of the slider on the guide shaft 10 according to the processing conditions. After adjustment, the slider fixing seat 15 can be fixed on the guide shaft 10 by screws, and the support sleeve 2 is respectively installed on each slider to support the workpiece 20 between the spring chuck 19 and the bushing 21 of the machine tool to prevent the workpiece from being disturbed and deformed during the processing.

[0055] Therefore, the pipe auxiliary support fixture of the present invention can fix each slider through the cooperation between the rotating shaft end fixing plate, the limit stopper, the guide shaft, the linear bearing, the X-axis end fixing plate, and the slider fixing seat, so that the slider can be arranged along the guide shaft between the spring chuck and the bushing of the machine tool, so as to provide support and support for the middle part of the workpiece through the support sleeve on the top of the slider. The present invention can ensure that the machine tool can firmly clamp the workpiece and accurately position the workpiece during the process of processing precision thin-walled tubes with an outer diameter of less than 1 mm, so that the processing of the workpiece is more stable and reliable. The present invention can avoid the problems of tube depression and docking misalignment that occur in conventional positioning and clamping of the workpiece and continuous processing by supporting the sleeve and the slider. The present invention can realize the processing of precision thin-walled tubes with an outer diameter of less than 1 mm, and also provides a certain reference and reference for the processing of other similar small rotating parts.

[0056] In a more specific implementation, the pipe auxiliary support fixture of the present invention is specifically provided with: a rotating shaft end fixing plate 1; a supporting sleeve 2; a first slider 3; an adjusting screw 4; a second slider 5; a third slider 6; a fourth slider 7; a linear bearing 8; a limit block 9; a guide shaft 10; an X-axis end fixing plate 11; a position fixing block 12; a pin screw 13; a movable connecting rod 14; a slider fixing seat 15; a slide rod 16 and other components on the above structure.

[0057] The finger cylinder and the bushing 21 are respectively installed on the two-dimensional adjustment seat 22 of the machine tool. The two-dimensional adjustment seat 22 is fixed on the end face of the X-axis motion platform 17. The rotating shaft end fixing plate 1 of the above-mentioned auxiliary support fixture is connected to the rotating shaft of the machine tool, and the other end X-axis end fixing plate is connected to the end of the X-axis motion platform 17 of the machine tool. The workpiece to be processed passes through the center of the rotating shaft, and passes through the support sleeves 2 on each slider in turn, and then slides with the bushing 21 to support the middle position of the workpiece 20.

[0058] An adjusting screw 4 may be provided between the slider and the supporting sleeve 2. The adjusting screw 4 rotates on the slider, and the supporting sleeve 2 moves inside the slider along with the rotation of the adjusting screw 4, so as to adjust the supporting hole to a position coaxial with the workpiece 20.

[0059] Specifically, the adjusting screw 4 on each slider can be configured to include a first adjusting screw vertically arranged above the top of the slider and a second adjusting screw horizontally arranged on the side of the top of the slider, the first adjusting screw and the second adjusting screw are respectively connected to the top and side of the support sleeve 2, the first adjusting screw rotates above the top of the slider to drive the support sleeve 2 to move vertically up and down along the slider, and the second adjusting screw rotates on the side of the top of the slider to drive the support sleeve 2 to move horizontally forward and backward along the slider.

[0060] In order to further reduce the disturbance deformation between various parts of the workpiece, the present invention also specifically sets the slider to include: a first slider 3, a second slider 5, a third slider 6 and a fourth slider 7 which are sequentially arranged along the guide shaft 10 between the slider fixing seat 15 and the X-axis end fixing plate 11. Among them, the bottom front end of the first slider 3 is fixedly connected to the slider fixing seat 15, and the fourth slider 7 is fixedly connected to the X-axis end fixing plate 11; the first slider 3, the second slider 5, the third slider 6 and the fourth slider 7 are also respectively connected with movable connecting rods 14, and the movable connecting rods 14 are respectively supported between the first slider 3, the second slider 5, the third slider 6 and the fourth slider 7, and move forward and backward with the slider fixing seat 15 to drive the first slider 3, the second slider 5, the third slider 6 and the fourth slider 7 to be evenly arranged between the slider fixing seat 15 and the X-axis end fixing plate 11 along the guide shaft 10.

[0061] Specifically, the movable link 14 between the sliders can be fixed and hinged at its connection part by a pin screw 13 to form a parallel four-bar linkage, which is linked with the slider to reciprocate along the guide shaft 10. Specifically, the transmission structure between the sliders includes:

[0062] A first movable connecting rod, the front end of which is connected to the bottom of the first sliding block 3, and the rear end of which is connected to the middle of the second sliding block 5;

[0063] A second movable connecting rod, the front end of which is connected to the middle of the first sliding block 3, and the rear end of which is connected to the bottom of the second sliding block 5;

[0064] A third movable link, the front end of which is connected to the bottom of the second slider 5, and the rear end of which is connected to the middle of the third slider 6;

[0065] A fourth movable link, the front end of which is connected to the middle of the second slider 5, and the rear end of which is connected to the bottom of the third slider 6;

[0066] A fifth movable link, the front end of which is connected to the bottom of the third slider 6, and the rear end of which is connected to the middle of the fourth slider 7;

[0067] The sixth movable connecting rod has a front end connected to the middle of the third sliding block 6 , and a rear end connected to the bottom of the fourth sliding block 7 .

[0068] Before processing, the rotating shaft 18 quickly moves to the left side of the X-axis motion platform 17 to the initial processing position. At this time, the auxiliary support fixture module moves with the rotating shaft 18 and is pulled up to the longest state as shown in the figure; then the workpiece to be processed passes through the center of the rotating shaft 18, and passes through multiple support sleeves 2 and bushings 21 on the fixture to form a sliding fit (generally 5mm~10mm out of the bushing), and the position of the support sleeve 2 is adjusted by adjusting the screw 4 to ensure that the pipe and each support sleeve 2 are basically concentric. During the processing of the workpiece, the elastic chuck 19 will first clamp the workpiece, and then feed it to the right of the X-axis motion platform 17 while rotating according to the processing requirements. The rotating shaft 18 will also synchronously drive the guide shaft 10 on the auxiliary fixture module to move together. At this time, under the action of the parallel four-bar linkage, the first slider 3, the second slider 5 and the third slider 6 simultaneously move towards the fourth slider 7 at a uniform speed. When the end of the pipe is processed, the rotating shaft moves to the extreme position on the right side of the X-axis motion platform. At this time, the first slider 3, the second slider 5 and the third slider 6 and the fourth slider 7 will fit together. If you want to perform multiple continuous processing, just repeat the above cycle steps.

[0069] In order to fix each slider, the slider fixing seat 15 may be provided with a fixing hole, and a screw passes through the fixing hole to fix the slider fixing seat 15 and the guide shaft 10, thereby limiting the slider fixing seat 15 from moving along the guide shaft 10. Correspondingly, a position fixing block 12 may be further provided at the rear end of the pipe auxiliary support fixture, the front end of which is fixedly connected to the fourth slider 7, and the rear end of which is fixedly connected to the X-axis end fixing plate 11, so that the fourth slider 7 at the rear end and the X-axis end fixing plate 11 are adjusted and tightened through the position fixing block 12.

[0070] During the entire machining process, the workpiece is held up by the support sleeve 2 on the support fixture from beginning to end, and will not be dented or deformed due to its own weight, so the accuracy and stability of the entire machining process can be ensured.

[0071] The advantage of the present invention is that it can support workpieces of any length, that is, the number of sliders, movable connecting rods and supporting sleeves on the fixture can be increased or decreased arbitrarily according to the length of the workpiece. In theory, a parallel four-bar linkage mechanism can be infinitely constructed to support workpieces of any length.

[0072] Therefore, the present invention can ensure that the machine tool can clamp firmly, position accurately, stably and reliably during the processing of precision thin-walled tubes with an outer diameter of less than 1 mm through the support of the auxiliary support fixture of the tube, and can avoid the problem of the middle part of the tube being sunken when positioning and clamping slender workpieces in the conventional way, and can also avoid or avoid the problem of docking misalignment when continuously processing slender workpieces in the conventional way. The present invention provides a comprehensive and optimized feasible solution for the support, positioning and processing of precision thin-walled tubes of any length below 1 mm, realizes the processing of precision thin-walled tubes with an outer diameter of less than 1 mm, and can also provide reference and reference for the processing of other similar small rotating parts.

[0073] The above is only an embodiment of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A pipe auxiliary support fixture for machine tools, characterized in that: include: A rotating shaft end fixing plate (1), which is arranged at one end of the pipe auxiliary support fixture for the machine tool, installed above the X-axis motion platform (17) of the machine tool and fixedly connected to the rotating shaft (18) of the machine tool; A limit stopper (9) is arranged at the other end of the machine tool pipe auxiliary support fixture, installed above the X-axis motion platform (17) of the machine tool and fixedly connected to the two-dimensional adjustment seat (22) of the machine tool; A guide shaft (10) is connected between the rotating shaft end fixing plate (1) and the limit stopper (9) along the X-axis direction of the machine tool, and its two ends are respectively fixedly connected to the rotating shaft end fixing plate (1) and the limit stopper (9); A linear bearing (8) connected to the guide shaft (10), disposed between the rotating shaft end fixing plate (1) and the limit stopper (9), and capable of moving along the guide shaft (10); An X-axis end fixing plate (11) which is fixedly connected to the linear bearing (8), is disposed at the rear end of the X-axis motion platform (17) of the machine tool, and moves synchronously with the linear bearing (8); A slider fixing seat (15) connected to the guide shaft (10), arranged between the rotating shaft end fixing plate (1) and the X-axis end fixing plate (11), and capable of moving along the guide shaft (10); A slider, comprising a plurality of sliders arranged between the slider fixing seat (15) and the X-axis end fixing plate (11) along the guide shaft (10), each slider being capable of moving along the guide shaft (10); Support sleeves (2) are respectively arranged on the top of each slider, and each support sleeve (2) has a support hole arranged along the axial direction of the guide shaft (10) for allowing the workpiece (20) to pass through; the workpiece (20) passes through the support sleeves (2) arranged on the top of each slider in sequence along the guide shaft (10), and is lifted between the spring chuck (19) and the bushing (21) of the machine tool by the support holes of the support sleeves (2); The rotating shaft (18) is arranged on the X-axis motion platform so as to be reciprocatingly movable along the X-axis direction; the two-dimensional adjustment seat (22) is located at the rear end of the X-axis motion platform and is used to adjust the workpiece in the horizontal and vertical directions perpendicular to the X-axis; The linear bearing (8) is mounted on the X-axis end fixing plate (11), two guide shafts (10) are arranged to pass through the linear bearing (8), and the two ends of the guide shaft (10) are respectively connected to the rotating shaft end fixing plate (1) and the limit block (9); the mounting holes under each slider are arranged to pass through the guide shaft (10) in sequence and form a sliding fit with the guide shaft (10), so that the slider can move along the guide shaft (10) to a suitable position; The bushing (21) is mounted on the two-dimensional adjustment seat (22), and the two-dimensional adjustment seat (22) is fixed on the end surface of the X-axis motion platform (17); the rotating shaft end fixing plate (1) is connected to the rotating shaft (18) of the machine tool, and the X-axis end fixing plate (11) is connected to the end of the X-axis motion platform (17) of the machine tool; The slider comprises a first slider (3), a second slider (5), a third slider (6) and a fourth slider (7) which are sequentially arranged along the guide shaft (10) between the slider fixing seat (15) and the X-axis end fixing plate (11), wherein the bottom front end of the first slider (3) is fixedly connected to the slider fixing seat (15), and the fourth slider (7) is fixedly connected to the X-axis end fixing plate (11); movable connecting rods (14) are respectively connected between the first slider (3), the second slider (5), the third slider (6) and the fourth slider (7); the movable connecting rods (14) are supported between the first slider (3), the second slider (5), the third slider (6) and the fourth slider (7), and move forward and backward with the slider fixing seat (15) to drive the first slider (3), the second slider (5), the third slider (6) and the fourth slider (7) to be evenly arranged along the guide shaft (10) between the slider fixing seat (15) and the X-axis end fixing plate (11); The movable link (14) comprises: a first movable link, a front end of which is connected to the bottom of the first slider (3) and a rear end of which is connected to the middle of the second slider (5); a second movable link, a front end of which is connected to the middle of the first slider (3) and a rear end of which is connected to the bottom of the second slider (5); a third movable link, a front end of which is connected to the bottom of the second slider (5) and a rear end of which is connected to the middle of the third slider (6); a fourth movable link, a front end of which is connected to the middle of the second slider (5) and a rear end of which is connected to the bottom of the third slider (6); a fifth movable link, a front end of which is connected to the bottom of the third slider (6) and a rear end of which is connected to the middle of the fourth slider (7); and a sixth movable link, a front end of which is connected to the middle of the third slider (6) and a rear end of which is connected to the bottom of the fourth slider (7). The slider fixing seat (15) is also provided with a fixing hole, through which a screw passes to fix the slider fixing seat (15) and the guide shaft (10) to be connected, thereby limiting the movement of the slider fixing seat (15) along the guide shaft (10); The pipe auxiliary support fixture for machine tools further comprises a position fixing block (12), the front end of the position fixing block (12) being fixedly connected to the fourth sliding block (7), and the rear end of the position fixing block (12) being fixedly connected to the X-axis end fixing plate (11).

2. The pipe auxiliary support fixture for machine tools according to claim 1, characterized in that: An adjusting screw (4) is also connected between the slider and the support sleeve (2); the adjusting screw (4) rotates on the slider, and the support sleeve (2) moves inside the slider along with the rotation of the adjusting screw (4), so as to adjust the support hole to a position coaxial with the workpiece (20).

3. The pipe auxiliary support fixture for machine tools according to claim 2, characterized in that: The adjusting screw (4) comprises a first adjusting screw vertically arranged above the top of the slider and a second adjusting screw horizontally arranged on the side of the top of the slider, the first adjusting screw and the second adjusting screw being connected to the top and the side of the supporting shaft sleeve (2) respectively, the first adjusting screw rotating above the top of the slider drives the supporting shaft sleeve (2) to move vertically up and down along the slider, and the second adjusting screw rotating on the side of the top of the slider drives the supporting shaft sleeve (2) to move horizontally forward and backward along the slider.

4. A machine tool, characterized in that: The machine tool is provided with a pipe auxiliary support fixture for machine tools as described in any one of claims 1-3.

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