Auxiliary clamp for numerical control blade grinding workpiece machining

Abstract

The invention relates to the technical field of part tools, in particular to an auxiliary clamp for numerical control blade grinding workpiece machining, which comprises a clamping chuck, a base assembly, an auxiliary support assembly, a fixed clamping assembly and a movable clamping assembly, the auxiliary supporting assembly comprises a mounting table fixedly mounted on the base assembly, a supporting assembly I used for auxiliary supporting of a workpiece is fixedly mounted on the mounting table, a positioning assembly is fixedly mounted on the supporting assembly I, a supporting assembly II is further slidably mounted on the mounting table, and an operation assembly is further fixedly mounted on the mounting table. By arranging the supporting assembly I with the fixed position and the supporting assembly II with the adjustable position, supporting points of workpieces can be flexibly adjusted according to different lengths of the workpieces in cooperation with the operation assembly, the stability of the workpieces can be kept, the rigidity of the workpieces is improved, and the machining efficiency is improved. And the workpiece machining failure caused by the cutter relieving phenomenon of the workpiece during machining is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of part tooling, in particular to a kind of auxiliary fixture for numerical control sharpening workpiece machining. BACKGROUND

[0002] With the continuous pursuit of machining precision and machining efficiency of modern manufacturing, numerical control grinding machine is more and more widely used in blade tool machining, and blade tool is a very important tool in machining, and its sharpness directly affects the machining quality, production efficiency and product cost, therefore, it is particularly important to ensure the stability and accuracy of blade tool in the machining process.

[0003] Traditional blade clamping method is mostly three-jaw chuck clamping, but when machining long rod type blade, it shows some shortcomings, because the clamping point distance of grinding tool and blade is far, leading to blade vibration in the machining process, prone to let knife phenomenon, this phenomenon not only affects the machining accuracy of blade, but also may accelerate the wear of blade, reduce its service life, and although the traditional supporting structure can support the blade, because the diameter and length of blade workpiece exist many specifications, therefore, the position of supporting structure needs to be adjusted many times by processing personnel, and because the traditional supporting structure adopts bolt locking, it needs to consume long time to change position, greatly reduce the work efficiency.

[0004] Therefore, an auxiliary fixture for numerical control sharpening workpiece machining is needed, which can not only improve the clamping rigidity of blade tool, reduce the adverse effects of vibration, but also quickly realize support adjustment and improve work efficiency. SUMMARY

[0005] The present application aims to provide an auxiliary fixture for numerical control sharpening workpiece machining to solve the above problems.

[0006] The present application is realized by the following technical scheme: The utility model provides a kind of numerical control sharpening workpiece processing auxiliary fixture, including chucking chuck, base assembly, auxiliary support assembly, fixed clamping assembly, mobile clamping assembly;Auxiliary support assembly includes fixedly installed on base assembly's installation table, the installation table is fixedly installed with the support component I for workpiece auxiliary support, the support component I is fixedly installed with the positioning component for positioning workpiece shaft center, the installation table is also slidably installed with the support component II for long workpiece auxiliary support, the installation table is also fixedly installed with the operating component for driving support component I, positioning component, support component II and mobile clamping assembly to workpiece carry out centring support;Fixed clamping assembly includes fixedly installed on base assembly's fixed clamping seat, the fixed clamping seat is movably installed with the clamping component I for intermittent locking workpiece, the fixed clamping seat is also fixedly installed with the transmission component I for driving clamping component I work;Mobile clamping assembly includes slidably installed on installation table's mobile clamping seat, the mobile clamping seat is movably installed with the clamping component II for intermittent locking workpiece, the mobile clamping seat is also fixedly installed with the transmission component II for driving clamping component II work.

[0007] Further, the support component I includes fixedly installed on the installation table's fixed support seat, the fixed support seat is fixedly installed with the fixed sleeve II for adjusting guide when supporting workpiece, the fixed sleeve II is slidably installed with the lifting sliding rod, the lifting sliding rod is slidably connected with the fixed sleeve II by means of bolt, the lifting sliding rod is movably installed with the support table for supporting workpiece, the lifting sliding rod is screw-connected with the support adjusting screw rod, the support adjusting screw rod is rotatably installed with the fixed support seat, the support adjusting screw rod is fixedly installed with the gear for intermittent connection with operating component.

[0008] Further, the positioning component includes fixedly installed on the support component I's fixed sleeve I, the fixed sleeve I is spline-connected with the positioning sliding rod, the positioning sliding rod is slidably installed with the positioning contact for positioning workpiece, the positioning sliding rod is also fixedly installed with the trigger block for transmitting positioning information, the positioning sliding rod is screw-connected with the positioning adjusting screw rod, the positioning adjusting screw rod is rotatably installed with the fixed sleeve I, the positioning adjusting screw rod is fixedly installed with the gear for intermittent connection with operating component.

[0009] Further, the support assembly II comprises a sliding support base slidingly mounted on the mounting table, a fixed sleeve II for adjusting the guide when supporting the workpiece is fixedly mounted on the sliding support base, a lifting sliding rod slidingly mounted on the fixed sleeve II, the lifting sliding rod is slidingly connected with the fixed sleeve II through a latch, a support table for supporting the workpiece is movably mounted on the lifting sliding rod, a support adjusting screw is threadedly connected on the lifting sliding rod, the support adjusting screw is rotatably mounted with the sliding support base, a gear for intermittently connecting with the operation assembly is fixedly mounted on the support adjusting screw.

[0010] Further, the operation assembly comprises a positioning adjusting strip slidingly mounted on the mounting table, a sliding connecting plate for resetting the positioning adjusting strip is spring-connected on the positioning adjusting strip, the sliding connecting plate is slidingly mounted with the mounting table through a sliding groove; the operation assembly further comprises an engagement adjusting rod I rotatably mounted on the mounting table, a pushing cam is fixedly mounted on the engagement adjusting rod I, the pushing cam on the engagement adjusting rod I is in contact with the positioning adjusting strip, a gear shifting handle I for pushing the positioning adjusting strip to engage with the positioning assembly is further fixedly mounted on the engagement adjusting rod I; the positioning adjusting strip comprises a light strip part, a side tooth part and a straight tooth part, the side tooth part of the positioning adjusting strip is intermittently engaged with the positioning assembly, the straight tooth part of the positioning adjusting strip is used for pushing the positioning adjusting strip to move axially along the engagement adjusting rod I; a crank opening for avoiding interference is arranged on the gear shifting handle I.

[0011] Further, the operation assembly further comprises a support adjusting strip slidingly mounted on the mounting table, a sliding connecting plate for resetting the support adjusting strip is spring-connected on the support adjusting strip, the sliding connecting plate is slidingly mounted with the mounting table through a sliding groove; the operation assembly further comprises an engagement adjusting rod II rotatably mounted on the mounting table, a pushing cam is fixedly mounted on the engagement adjusting rod II, the pushing cam on the engagement adjusting rod II is in contact with the support adjusting strip, a gear shifting handle II for pushing the support adjusting strip to engage with the positioning assembly is further fixedly mounted on the engagement adjusting rod II; the support adjusting strip comprises a light strip part, a side tooth part and a straight tooth part, the side tooth part of the support adjusting strip is intermittently engaged with the support assembly I and the support assembly II, the straight tooth part of the support adjusting strip is used for pushing the support adjusting strip to move axially along the engagement adjusting rod II.

[0012] Further, the operation assembly further comprises a detachable shell frame fixedly installed on the installation table, a support adjusting shaft I, a clamping adjusting shaft II and a lifting adjusting shaft are rotatably installed on the detachable shell frame, the support adjusting shaft I is in threaded connection with the movable clamping assembly and is used for assisting the movable clamping assembly in moving along the axis of the support adjusting shaft I, the clamping adjusting shaft II is in threaded connection with the support assembly II and is used for assisting the support assembly II in moving along the axis of the clamping adjusting shaft II, the lifting adjusting shaft is fixedly installed with rotating gears for adjusting the rotation of the support assembly I, the support assembly II and the positioning assembly, and the lifting adjusting shaft is further fixedly installed with a rotating disc for assisting the rotation of the lifting adjusting shaft, the detachable shell frame is spring-connected with a clamping block for locking the connection state of the operation assembly, the positioning assembly, the support assembly I and the support assembly II, and the clamping block is provided with at least six groups.

[0013] Further, the clamping assembly I comprises a clamping jaw slidably installed on the fixed clamping seat, a fastening rack and a sliding adjusting block, the clamping jaw is fixedly installed with a reset spring for resetting, the clamping jaw is further fixedly installed with a cylinder for connecting the sliding adjusting block, the clamping jaw is in limiting connection with the sliding adjusting block through the cylinder, the sliding adjusting block is in threaded connection with a threaded rotating shaft, the threaded rotating shaft is rotatably installed with the fixed clamping seat, the threaded rotating shaft is fixedly installed with a gear in meshing connection with the fastening rack, the fastening rack is fixedly installed with a spring, the spring on the fastening rack is fixedly installed at a first end with the fastening rack and at a second end with the fixed clamping seat, and the transmission assembly comprises a fastening cylinder I fixedly installed on the fastening rack and used for intermittently pushing the fastening rack to move along the axis of the threaded rotating shaft.

[0014] Further, the clamping assembly II comprises a sliding cavity block fixedly installed on the movable clamping seat and a connecting sleeve shaft, the connecting sleeve shaft is slidably installed with a sliding push rod, the sliding push rod is rotatably installed with a rotating clamping block for assisting workpiece centering clamping, the rotating clamping block is slidably installed with the sliding cavity block, the rotating clamping block is movably installed with a clamping top block for workpiece centering clamping, the movable clamping seat is further rotatably installed with a rotating shaft, the sliding push rod is slidably installed with the rotating shaft, the rotating shaft is fixedly installed with a deflection wheel, the deflection wheel is provided with an arc groove, the sliding push rod is fixedly installed with a sliding cavity shaft, the sliding cavity shaft is slidably arranged in the arc groove of the deflection wheel, the deflection wheel is further fixedly installed with a push rod, and the transmission assembly II comprises a fastening cylinder II fixedly installed on the movable clamping seat and used for driving the clamping assembly II, the fastening cylinder II is fixedly installed with a push frame, and the push frame is slidably connected with the push rod of the deflection wheel.

[0015] Compared with the prior art, the present application has the following advantages and beneficial effects: 1. The present invention, by setting a fixed support component I and an adjustable support component II, together with the operation component, can flexibly adjust the support points of the workpiece according to the different lengths of the workpiece. When performing grinding of medium and long workpieces, it can maintain the stability of the workpiece, improve the rigidity of the workpiece, and avoid the workpiece deflection phenomenon during processing, which would lead to workpiece processing failure. 2. By setting up a positioning component, the present invention can measure the clamping height of the workpiece before support, providing accurate data for the support adjustment of support component I and support component II, and avoiding the workpiece being unable to rotate due to excessive support height of support component I and support component II, which would affect the processing of the workpiece; 3. By setting up an operation component, the present invention integrates the adjustment operations of the positioning component, support component I, support component II and moving clamping component into one place, which facilitates the operation of the processing personnel, avoids the repeated locking operation required by the personnel in the traditional adjustment process, and greatly improves the work efficiency. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a frontal view of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a schematic diagram of the overall structure of the present invention; Figure 4 This is a schematic view of the overall auxiliary support component of the present invention; Figure 5 This is a partial cross-sectional schematic diagram of the auxiliary support component of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point A in the middle; Figure 7 For the present invention Figure 5 Schematic diagram of the structure at point B; Figure 8 This is a partial structural diagram of the operating component of the present invention; Figure 9 For the present invention Figure 8 Schematic diagram of the structure at point C; Figure 10 For the present invention Figure 8 Schematic diagram of the structure at point D; Figure 11 This is a partial cross-sectional schematic diagram of the fixing and clamping assembly of the present invention; Figure 12 This is a partial cross-sectional view of the movable clamping component of the present invention.

[0017] The attached diagram shows the markings and corresponding component names: 1-Clamping chuck; 2-Base assembly; 3-Assistant support assembly; 4-Fixed clamping assembly; 5-Movable clamping assembly; 201-Base plate; 202-Pneumatic connector; 203-Positioning block; 301-Fixed support seat; 302-Supporting table; 303-Mounting table; 304-Sliding support seat; 305-Detachable shell frame; 306-Supporting adjusting shaft I; 307-Clamping adjusting shaft II; 308-Lifting adjusting shaft; 309-Interchange handle I; 310-Interchange handle II; 311-Fixed sleeve I; 312-Positioning sliding rod; 313-Positioning contact; 314-Lifting sliding rod; 315-Fixed sleeve II; 316-Mounting block I; 317-Mounting block II; 318-Guiding light pole; 319-Positioning adjusting strip; 320-Supporting adjusting strip; 321-Supporting adjusting screw; 322-Positioning adjusting screw; 323-Trigger block; 324-Locking block; 325-Engaging adjusting rod I; 326-Engaging adjusting rod II; 327-Sliding connecting plate; 328-Rotating gear; 401-Fixed clamping seat; 402-Clamping jaw; 403-Fastening cylinder I; 404-Fastening rack; 405-Screwed rotating shaft; 406-Sliding adjusting block; 407-Reset spring; 408-Damping pad; 501-Movable clamping seat; 502-Rotating clamping block; 503-Fastening cylinder II; 504-Clamping top block; 505-Sliding push rod; 506-Sliding cavity block; 507-Connecting sleeve shaft; 508-Rotating shaft; 509-Deflection wheel; 510-Pushing frame; 511-Sliding cavity shaft. DETAILED DESCRIPTION

[0018] In order to make the objects, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application with reference to the embodiments and drawings, the illustrative embodiments and the description thereof are only used to explain the present application, and do not limit the present application.

[0019] Embodiment 1 As Figure 1 , Figure 2 and Figure 3As shown, an auxiliary fixture for numerical control sharpening of workpiece processing, including clamping chuck 1, base assembly 2, auxiliary support assembly 3, fixed clamping assembly 4, moving clamping assembly 5; auxiliary support assembly 3 includes fixedly installed on the base assembly 2 installation table 303, the installation table 303 is fixedly installed with support assembly I for workpiece auxiliary support, support assembly I is fixedly installed with positioning assembly for positioning workpiece shaft, the installation table 303 is also slidably installed with support assembly II for long workpiece auxiliary support, the installation table 303 is also fixedly installed with operation assembly for driving support assembly I, positioning assembly, support assembly II and moving clamping assembly 5 to center support workpiece; fixed clamping assembly 4 includes fixedly installed on the base assembly 2 fixed clamping seat 401, the fixed clamping seat 401 is movably installed with clamping assembly I for intermittent locking workpiece, the fixed clamping seat 401 is also fixedly installed with transmission assembly I for driving clamping assembly I to work; moving clamping assembly 5 includes slidingly installed on the installation table 303 moving clamping seat 501, the moving clamping seat 501 is movably installed with clamping assembly II for intermittent locking workpiece, the moving clamping seat 501 is also fixedly installed with transmission assembly II for driving clamping assembly II to work.

[0020] When processing, according to the length of the workpiece, whether to use support assembly II and moving clamping assembly 5 is selected, when the length of the workpiece is short (0-100mm), the workpiece can be directly clamped and processed through the clamping chuck 1, when the length of the workpiece is medium (100mm-500mm), the workpiece is clamped and processed through the clamping chuck 1 in cooperation with the fixed clamping assembly 4 and the support assembly I, when the length of the workpiece is too long (more than 500mm), the workpiece is clamped and processed through the clamping chuck 1 in cooperation with the support assembly I, the support assembly II, the fixed clamping assembly 4 and the moving clamping assembly 5, when processing long workpiece, the position of the support assembly II and the moving clamping assembly 5 is adjusted through the operation assembly to be in the best supporting position, then the height of the workpiece is positioned through the operation assembly, after positioning is completed, the height of the support is adjusted through the operation assembly, after adjustment is completed, the workpiece is locked twice by the moving clamping assembly 5 and the fixed clamping assembly 4, then the workpiece is processed, when the workpiece needs to be rotated, the fixed clamping assembly 4 and the moving clamping assembly 5 are loosened to clamp the workpiece, the clamping chuck 1 rotates with the workpiece to complete rotation, after rotation is completed, the fixed clamping assembly 4 and the moving clamping assembly 5 clamp the workpiece again, then the workpiece is processed again, the above processing process is repeated until the workpiece processing is completed, and then the workpiece processing work is completed.

[0021] The base assembly 2 comprises a base plate 201 fixedly connected with the machine tool by bolts, the base plate 201 is provided with a positioning block 203 in sliding connection with the machine tool, the base plate 201 is fixedly provided with a pneumatic connecting piece 202 for transmitting high-pressure gas, the pneumatic connecting piece 202 is in communication with the fastening cylinder I 403 and the fastening cylinder II 503 through two conveying pipes respectively, the conveying pipe connected with the fastening cylinder II 503 of the pneumatic connecting piece 202 is a stretchable plastic pipe, which avoids the conveying pipe from falling off when the moving clamping assembly 5 moves, and through the air compressor connected with the pneumatic connecting piece 202, the fastening cylinder I 403 and the fastening cylinder II 503 are inflated and exhausted respectively during work, so that the workpiece is in an unclamped state when the workpiece rotates, the workpiece is convenient for machining, and repeated fixing work of the workpiece is avoided, time and effort are saved.

[0022] Example 2 As Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, in the embodiment, the auxiliary support assembly 3 comprises a mounting table 303 fixedly installed on the base plate 201, and a support assembly I for auxiliary support of the workpiece is fixedly installed on the mounting table 303. The support assembly I comprises a fixed support seat 301 fixedly installed on the mounting table 303, a fixed sleeve II 315 for adjusting and guiding when supporting the workpiece is fixedly installed on the fixed support seat 301, a lifting sliding rod 314 is slidingly installed on the fixed sleeve II 315, the lifting sliding rod 314 is slidingly connected with the fixed sleeve II 315 through a latch, through the latch type connection, the lifting sliding rod 314 is avoided from being deflected when the support is adjusted, so as to cause the support to deviate, a support table 302 for supporting the workpiece is detachably installed on the lifting sliding rod 314 through a threaded latch, a support adjusting screw 321 is threadedly connected on the lifting sliding rod 314, the support adjusting screw 321 is rotationally installed with the fixed support seat 301, and a gear for intermittently engaging with the support adjusting strip 320 is fixedly installed on the support adjusting screw 321; when the medium workpiece is processed (the length of the workpiece is between 100 mm-500 mm), the workpiece is inserted into the clamping opening of the chuck 1, and the workpiece is locked through the cooperation of the fixed clamping assembly 4 and the chuck 1. Since the workpiece is long, the length of the machining end of the workpiece is often greater than the length of the clamping end, so when machining, especially when machining the end face, the workpiece will produce tool relief phenomenon, which will cause machining error. Therefore, the machining end is supported by the support assembly I to improve the rigidity of the workpiece and ensure the accuracy of machining. During work, the appropriate sliding support seat 304 is selected according to the size of the workpiece in advance, so as to avoid the sliding support seat 304 from colliding with the tool during machining due to being too large or too small. The machining personnel operates the operation assembly, the clamping height of the workpiece is determined through the positioning assembly, then the gear of the support adjusting strip 320 in the operation assembly engages with the support adjusting screw 321, then the support adjusting strip 320 is moved by the operation assembly, then the support adjusting screw 321 is rotated, then the lifting sliding rod 314 moves in the fixed sleeve II 315 along the axis of the fixed sleeve II 315, the moving distance matches the height determined by the positioning assembly, the sliding support seat 304 is driven to tightly contact the workpiece through the movement of the lifting sliding rod 314, then the workpiece is provided with strong support, the rigidity of the workpiece during machining is improved, and machining error is avoided.

[0023] The fixed support seat 301 is fixedly installed with a positioning assembly for positioning the shaft center of the workpiece. The positioning assembly comprises a fixed sleeve I 311 fixedly installed on the support assembly I, a positioning sliding rod 312 spline-connected to the fixed sleeve I 311, a positioning contact 313 slidably installed on the positioning sliding rod 312 for positioning the workpiece, a spring fixedly installed on the positioning contact 313, one end of the spring fixedly installed on the positioning contact 313 and the other end fixedly installed on the positioning sliding rod 312, a trigger block 323 fixedly installed in the positioning sliding rod 312 for transmitting positioning information, a positioning adjusting screw 322 threadedly connected to the positioning sliding rod 312, the positioning adjusting screw 322 rotatably installed on the fixed sleeve I 311, and a gear fixedly installed on the positioning adjusting screw 322 for intermittent connection with the operating assembly. Before the workpiece is supported by the support assembly I and the support assembly II, the clamping height of the workpiece needs to be positioned to avoid excessive support force of the support assembly I and the support assembly II on the workpiece, which causes the workpiece to be unable to rotate with the clamping chuck 1 during machining, resulting in repeated machining of a point. When the positioning assembly is used, the machining personnel operate the operating assembly to make the positioning adjusting strip 319 engage with the gear of the positioning adjusting screw 322, and then move the positioning adjusting strip 319 by the operating assembly to drive the positioning adjusting screw 322 to rotate, and then drive the positioning sliding rod 312 to move along the axis of the fixed sleeve I 311 in the fixed sleeve I 311. During positioning, the positioning contact 313 moves towards the workpiece, and after the positioning contact 313 is attached to the workpiece, it continues to move upwards to make the positioning contact 313 slide in the positioning sliding rod 312. When the positioning contact 313 slides, the machining personnel slow down the operation speed, and when the bottom of the positioning contact 313 contacts the trigger block 323, the trigger block 323 sends a signal, and the machining personnel stops operating, thereby determining the clamping height of the workpiece. Through the spring sliding design of the positioning contact 313 in the positioning sliding rod 312, it is avoided that the positioning assembly directly contacts the workpiece rigidly to cause damage to the positioning head, and the clamping height of the workpiece is positioned to provide accurate data for the support height of the support assembly I and the support assembly II.

[0024] The operating assembly for driving the workpiece to be centered and supported by the support assembly I, the positioning assembly, the support assembly II and the moving clamping assembly 5 is also fixedly installed on the mounting table 303, and the operating assembly comprises a positioning adjusting strip 319 slidably installed on the mounting table 303, a sliding connecting plate 327 spring-connected to the positioning adjusting strip 319 for resetting the positioning adjusting strip 319, the sliding connecting plate 327 being slidably installed on the mounting table 303 through a sliding groove, a meshing adjusting rod I 325 rotatably installed on the mounting table 303, a pushing cam fixedly installed on the meshing adjusting rod I 325, the pushing cam on the meshing adjusting rod I 325 being in contact with the positioning adjusting strip 319, a meshing changing handle I 309 fixedly installed on the meshing adjusting rod I 325 for pushing the positioning adjusting strip 319 to mesh with the positioning assembly, the positioning adjusting strip 319 comprising a light strip part, a side tooth part and a straight tooth part, the side tooth part of the positioning adjusting strip 319 being intermittently meshed with the positioning assembly, the straight tooth part of the positioning adjusting strip 319 being used for pushing the positioning adjusting strip 319 to move axially along the meshing adjusting rod I 325, and the meshing changing handle I 309 being provided with a bent opening for avoiding interference.

[0025] The support adjusting strip 320 is slidably installed on the mounting table 303, the support adjusting strip 320 is also spring-connected to the sliding connecting plate 327 for resetting the support adjusting strip 320, the sliding connecting plate 327 being slidably installed on the mounting table 303 through a sliding groove, the meshing adjusting rod II 326 is rotatably installed on the mounting table 303, a pushing cam is fixedly installed on the meshing adjusting rod II 326, the pushing cam on the meshing adjusting rod II 326 is in contact with the support adjusting strip 320, the meshing changing handle II 310 is fixedly installed on the meshing adjusting rod II 326 for pushing the support adjusting strip 320 to mesh with the support assembly, the support adjusting strip 320 comprises a light strip part, a side tooth part and a straight tooth part, the side tooth part of the support adjusting strip 320 is intermittently meshed with the support assembly I and the support assembly II, and the straight tooth part of the support adjusting strip 320 is used for pushing the support adjusting strip 320 to move axially along the meshing adjusting rod II 326.

[0026] The operating assembly further comprises a detachable shell frame 305, a mounting block I 316 and a mounting block II 317 fixedly installed on the mounting table 303, a supporting adjusting shaft I 306, a clamping adjusting shaft II 307 and a lifting adjusting shaft 308 are rotatably installed on the detachable shell frame 305, a positioning lamp (not shown in the figure) for providing positioning information is further fixedly installed on the detachable shell frame 305, the supporting adjusting shaft I 306 is rotatably connected with the mounting block I 316 and the mounting block II 317 respectively, the supporting adjusting shaft I 306 is threadedly connected with the moving and clamping assembly 5 for assisting the moving and clamping assembly 5 to move along the axis of the supporting adjusting shaft I 306, the clamping adjusting shaft II 307 is rotatably connected with the mounting block I 316 and the mounting block II 317 respectively, the clamping adjusting shaft II 307 is threadedly connected with the supporting assembly II for assisting the supporting assembly II to move along the axis of the clamping adjusting shaft II 307, a rotating gear 328 is fixedly installed on the lifting adjusting shaft 308, the rotating gear 328 is intermittently engaged with a positioning adjusting strip 319 and a supporting adjusting strip 320 respectively, a rotating disc for assisting the rotating lifting adjusting shaft 308 is further fixedly installed on the lifting adjusting shaft 308, a clamping block 324 for locking the connecting state of the operating assembly with the positioning assembly, the supporting assembly I and the supporting assembly II is spring-connected on the detachable shell frame 305, the clamping block 324 is provided with six groups, the six groups of clamping blocks 324 are respectively three-by-three matched with the disengaging handle I 309 and the disengaging handle II 310, the positions of the disengaging handle I 309 and the disengaging handle II 310 are limited by the clamping block 324.

[0027] In work, the positioning work of the positioning assembly is performed first, the processing personnel pull the disengaging handle I 309, and rotate 90° (such as Figure 6The cam of the engaging adjusting rod 1325 is shown) so that the side teeth of the positioning adjusting strip 319 and the gear of the positioning adjusting screw 322 are engaged, and the straight teeth and the rotating gear 328 are engaged, at this time the clamping block 324 elastically fixes the position of the exchange engaging handle 1309 (due to the spring connection, the processing personnel can slightly force to be separated from the fixed), and then the lifting adjusting shaft 308 is counterclockwise rotated, the rotating gear 328 drives the positioning adjusting strip 319 to move to the direction of the supporting assembly I, the sliding connecting plate 327 is moved together in the moving process, and then the positioning adjusting screw 322 is driven to rotate, and then the positioning sliding rod 312 is driven to move up to close to the workpiece, after the positioning contact 313 is close to the workpiece, the processing personnel reduces the rotating speed of the lifting adjusting shaft 308, and pays attention to the change of the positioning lamp on the detachable shell frame 305, when the bottom of the positioning contact 313 contacts the trigger block 323, the positioning lamp on the detachable shell frame 305 changes, the processing personnel stops the rotation of the lifting adjusting shaft 308, continues to pull the exchange engaging handle 1309 to rotate 90° (compared with the initial state, it is rotated by 180°), and the position is elastically fixed through the clamping block 324, the side teeth of the positioning adjusting strip 319 and the positioning adjusting screw 322 are disengaged under the action of the spring of the sliding connecting plate 327, the straight teeth and the rotating gear 328 are disengaged, and the positioning work of the workpiece clamping height is completed.

[0028] Then the processing personnel pull the gear changing handle Ⅱ 310 to rotate 90°, so that the cam of the gear changing rod Ⅱ 326 pushes the side gear part of the supporting adjusting strip 320 to engage with the gear on the supporting adjusting screw 321, and the straight tooth part engages with the rotating gear 328. At this time, the clamping block 324 elastically fixes the position of the supporting adjusting strip 320, and then the lifting adjusting shaft 308 is rotated clockwise to drive the rotating gear 328 to rotate and push the supporting adjusting strip 320 to move in the direction of the moving clamping assembly 5. The number of rotation of the lifting adjusting shaft 308 is consistent with the number of rotation of the lifting adjusting shaft 308 when positioning (the initial height of the supporting table 302 and the initial height of the positioning contact 313 are set with a certain compensation distance to compensate the distance of the positioning contact 313 sliding down), and the sliding connecting plate 327 moves together during the movement, thereby pushing the supporting adjusting screw 321 to rotate, thereby driving the lifting sliding rod 314 to move upwards and close to the workpiece, thereby making the sliding supporting seat 304 close to the workpiece to provide accurate and powerful support for the workpiece. After completing the adjustment of the supporting height, continue to pull the gear changing handle Ⅱ 310 to rotate 90° again (rotate 180° compared with the initial state), and the position is elastically fixed by the clamping block 324. The side tooth part of the supporting adjusting strip 320 disengages from the gear of the supporting adjusting screw 321 under the action of the spring of the sliding connecting plate 327, and the straight tooth part disengages from the rotating gear 328, so as to avoid the change of the supporting height caused by mistake during the processing. After completing the processing work of the workpiece, pull the gear changing handle Ⅰ 309 and the gear changing handle Ⅱ 310 back to rotate 90°, so that the cam of the gear changing rod Ⅰ 325 pushes the side tooth part of the positioning adjusting strip 319 to engage with the gear of the positioning adjusting screw 322, and the straight tooth part engages with the rotating gear 328. The cam of the gear changing rod Ⅱ 326 pushes the side gear part of the supporting adjusting strip 320 to engage with the gear on the supporting adjusting screw 321, and the straight tooth part engages with the rotating gear 328. The processing personnel rotate the lifting adjusting shaft 308 clockwise, and the number of rotation is consistent with the number of rotation before, thereby driving the positioning adjusting strip 319 and the supporting adjusting strip 320 to reset respectively, thereby driving the supporting assembly Ⅰ, the supporting assembly Ⅱ and the positioning assembly to complete the reset work.

[0029] Example 3 As Figure 5As shown, in this embodiment, the long workpiece is machined (the workpiece length is more than 500mm), and more support is needed to improve the rigidity of the workpiece to ensure that the workpiece will not appear to let the knife phenomenon during machining, and the support assembly II for long workpiece auxiliary support is also slidingly installed on the installation table 303, the support assembly II includes a sliding support seat 304 slidingly installed on the installation table 303, a fixed sleeve II 315 is fixedly installed on the sliding support seat 304 for supporting the workpiece Adjust the guide, the lifting sliding rod 314 is slidingly installed on the fixed sleeve II 315, the lifting sliding rod 314 is slidingly connected with the fixed sleeve II 315 through the latch, the support table 302 for supporting the workpiece is movably installed on the lifting sliding rod 314, the support adjusting screw 321 is threadedly connected on the lifting sliding rod 314, the support adjusting screw 321 is rotatably installed with the sliding support seat 304, the support adjusting screw 321 is fixedly installed with a gear for intermittent connection with the operation assembly, when the support assembly II is needed, the support height adjustment is synchronized with the adjustment of the support assembly I and the working principle is consistent, when the transverse position of the support point needs to be adjusted, the machining personnel rotates the clamping adjustment shaft II 307, and then the lifting sliding rod 314 moves along the axis of the clamping adjustment shaft II 307, thereby adjusting the transverse position of the support assembly II, and thereby changing the support point, providing stable support for the workpiece.

[0030] Embodiment 4 As Figure 11 shown, in this embodiment, the fixed clamping assembly 4 includes a fixed clamping seat 401 fixedly installed on the base assembly 2, two clamping jaws 402, a fastening rack 404 and a sliding adjusting block 406 are slidingly installed on the fixed clamping seat 401, the two clamping jaws 402 are respectively fixedly installed with return springs 407 for returning, and are also respectively fixedly installed with cylinders for connecting the sliding adjusting block 406, and are also respectively fixedly installed with clamping pieces for flexibly clamping the workpiece, the two clamping jaws 402 are limitingly connected with the sliding adjusting block 406 through the cylinders, the sliding adjusting block 406 is threadedly connected with a threaded rotating shaft 405, the threaded rotating shaft 405 is rotatably installed with the fixed clamping seat 401, the threaded rotating shaft 405 is fixedly installed with a gear meshing with the fastening rack 404, the fastening rack 404 is fixedly installed with a spring, one end of the spring on the fastening rack 404 is fixedly installed with the fastening rack 404, and the other end is fixedly installed with the fixed clamping seat 401, the fastening rack 404 is fixedly installed with a fastening cylinder I 403 for intermittently pushing the fastening rack 404 to move along the axis of the threaded rotating shaft 405, the fixed clamping seat 401 is fixedly installed with two shock absorbers 408, and the two shock absorbers 408 are respectively matched with the clamping pieces on the two clamping jaws 402 to flexibly clamp the workpiece (the clamping piece and the shock absorber 408 are made of damping material, which reduces the vibration of the clamping chuck 1 during machining).

[0031] During operation, according to clamping requirements, when clamping is needed, air is injected into the fastening cylinder I 403 through the pneumatic connector 202, which causes the fastening rack 404 to move and drive the threaded shaft 405 to rotate. This, in turn, causes the sliding adjustment block 406 to move downward along the axis of the threaded shaft 405, which in turn causes the clamping jaw 402 to move downward to clamp the workpiece, thus completing the clamping. The sliding adjustment block 406 and the clamping jaw 402 are connected by a cylinder for limiting, avoiding a direct rigid connection. This reduces the impact of vibration transmitted by the workpiece during processing on the threaded connection between the threaded shaft 405 and the sliding adjustment block 406, greatly improving the service life.

[0032] Example 5 like Figure 12 As shown, in this embodiment, the movable clamping assembly 5 includes a movable clamping seat 501 slidably mounted on the mounting platform 303. A sliding cavity block 506 and a connecting sleeve shaft 507 are fixedly mounted on the movable clamping seat 501. A sliding push rod 505 is slidably mounted on the connecting sleeve shaft 507. A rotating clamping block 502 for assisting workpiece centering and clamping is rotatably mounted on the sliding push rod 505. The rotating clamping block 502 is slidably mounted on the sliding cavity block 506. A clamping top block 504 for workpiece centering and clamping is threadedly connected to the rotating clamping block 502. (Before clamping, the position of the clamping top block 504 on the rotating clamping block 502 is adjusted according to the diameter of the workpiece so that the top of the clamping top block 504 can press against the workpiece during clamping.) A spring is also fixedly installed on the top block 504. One end of the spring is fixedly installed on the clamping top block 504, and the other end is fixedly installed on the rotating clamping block 502. A rotating shaft 508 is also rotatably installed on the movable clamping seat 501. A sliding push rod 505 is slidably installed on the rotating shaft 508. A deflection wheel 509 is fixedly installed on the rotating shaft 508. An arc groove is provided on the deflection wheel 509. A sliding cavity shaft 511 is fixedly installed on the sliding push rod 505. The sliding cavity shaft 511 is slidably disposed in the arc groove of the deflection wheel 509. A push rod is also fixedly installed on the deflection wheel 509. A fastening cylinder II 503 is also fixedly installed on the movable clamping seat 501. A push frame 510 is fixedly installed on the fastening cylinder II 503. The push frame 510 is slidably connected to the push rod of the deflection wheel 509.

[0033] When the workpiece with long length (500mm or more) is processed, not only the middle part of the workpiece needs to be supported, but also the position close to the processing end of the workpiece needs to be clamped again. The processing personnel rotates the rotating disc on the support adjusting shaft 1306, and then drives the moving clamping seat 501 to move along the axis of the support adjusting shaft 1306 on the mounting table 303. After moving to the appropriate position (20mm-50mm away from the end face of the workpiece processing end), the three-point clamping of the workpiece is realized through the V-shaped groove of the moving clamping seat 501 and the clamping top block 504. When the end face of the workpiece is processed, the workpiece is locked and clamped, the arm distance of the workpiece is shortened, the rigidity of the workpiece during processing is increased, and the tool relief phenomenon is avoided. During work, the pneumatic connecting piece 202 is inflated into the fastening cylinder 1503, so that the fastening cylinder 1503 pushes the push frame 510 downward, and then drives the deflection wheel 509 to deflect around the rotating shaft 508, and then drives the sliding cavity shaft 511 to move downward, and then drives the sliding push rod 505 to move downward, and then pulls the rotating clamping block 502 downward. Under the limitation of the sliding cavity block 506 guide rail, the rotating clamping block 502 rotates to make the clamping top block 504 press against the workpiece, and then the clamping work is completed.

[0034] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A numerical control sharpening auxiliary fixture for workpiece machining, comprising a clamping chuck (1), a base assembly (2), characterized in that: The auxiliary clamp further comprises an auxiliary supporting assembly (3), a fixed clamping assembly (4) and a moving clamping assembly (5). The auxiliary supporting assembly (3) comprises a mounting table (303) fixedly installed on the base assembly (2), a supporting assembly I for auxiliary supporting of the workpiece is fixedly installed on the mounting table (303), a positioning assembly for positioning the axis of the workpiece is fixedly installed on the supporting assembly I, a supporting assembly II for auxiliary supporting of the long workpiece is slidingly installed on the mounting table (303), and an operating assembly for driving the supporting assembly I, the positioning assembly, the supporting assembly II and the moving clamping assembly (5) to perform centering supporting on the workpiece is fixedly installed on the mounting table (303). The fixed clamping assembly (4) comprises a fixed clamping seat (401) fixedly installed on the base assembly (2), a clamping assembly I for intermittent locking of the workpiece is movably installed on the fixed clamping seat (401), and a transmission assembly I for driving the clamping assembly I to work is fixedly installed on the fixed clamping seat (401). The moving clamping assembly (5) comprises a moving clamping seat (501) slidingly installed on the mounting table (303), a clamping assembly II for intermittent locking of the workpiece is movably installed on the moving clamping seat (501), and a transmission assembly II for driving the clamping assembly II to work is fixedly installed on the moving clamping seat (501).

2. The auxiliary fixture for numerical control sharpening of a workpiece according to claim 1, characterized in that: The supporting assembly I comprises a fixed supporting seat (301) fixedly installed on the mounting table (303), a fixed sleeve II (315) for adjusting the guide when supporting the workpiece is fixedly installed on the fixed supporting seat (301), a lifting sliding rod (314) is slidingly installed on the fixed sleeve II (315), the lifting sliding rod (314) is slidingly connected with the fixed sleeve II (315) through a bolt, a supporting table (302) for supporting the workpiece is movably installed on the lifting sliding rod (314), a supporting adjusting screw rod (321) is threadedly connected with the lifting sliding rod (314), the supporting adjusting screw rod (321) is rotatably installed with the fixed supporting seat (301), and a gear for intermittent connection with the operating assembly is fixedly installed on the supporting adjusting screw rod (321).

3. The auxiliary fixture for the numerical control sharpening of the workpiece according to claim 1, characterized in that: The positioning assembly comprises a fixed sleeve I (311) fixedly installed on the supporting assembly I, a positioning sliding rod (312) is spline-connected with the fixed sleeve I (311), a positioning contact (313) for positioning the workpiece is slidingly installed on the positioning sliding rod (312), a trigger block (323) for transmitting the positioning information is fixedly installed on the positioning sliding rod (312), a positioning adjusting screw rod (322) is threadedly connected with the positioning sliding rod (312), the positioning adjusting screw rod (322) is rotatably installed with the fixed sleeve I (311), and a gear for intermittent connection with the operating assembly is fixedly installed on the positioning adjusting screw rod (322).

4. The auxiliary fixture for the numerical control sharpening of the workpiece according to claim 1, characterized in that: The support assembly II includes a sliding support base (304) slidingly mounted on the mounting table (303), a fixed sleeve II (315) for supporting the workpiece and adjusting the guide is fixedly mounted on the sliding support base (304), a lifting sliding rod (314) slidingly mounted on the fixed sleeve II (315), the lifting sliding rod (314) is slidingly connected with the fixed sleeve II (315) through a latch, a support table (302) for supporting the workpiece is movably mounted on the lifting sliding rod (314), a support adjusting screw (321) is threadedly connected on the lifting sliding rod (314), the support adjusting screw (321) is rotatably mounted with the sliding support base (304), and a gear for intermittently connecting with the operation assembly is fixedly mounted on the support adjusting screw (321).

5. The auxiliary fixture for the numerical control sharpening of the workpiece according to claim 1, characterized in that: The operation assembly includes a positioning adjusting strip (319) slidingly mounted on the mounting table (303), and a sliding connection plate (327) for resetting the positioning adjusting strip (319) is spring-connected on the positioning adjusting strip (319), and the sliding connection plate (327) is slidingly mounted with the mounting table (303) through a sliding groove.

6. The auxiliary fixture for numerical control sharpening of a workpiece according to claim 5, wherein: The operation assembly further includes an engagement adjusting rod I (325) rotatably mounted on the mounting table (303), a pushing cam is fixedly mounted on the engagement adjusting rod I (325), the pushing cam on the engagement adjusting rod I (325) is in contact with the positioning adjusting strip (319), and a change engagement handle I (309) for pushing the positioning adjusting strip (319) to engage with the positioning assembly is further fixedly mounted on the engagement adjusting rod I (325).

7. The auxiliary fixture for the numerical control sharpening of the workpiece according to claim 6, characterized in that: The positioning adjusting strip (319) includes a light strip portion, a side tooth portion and a straight tooth portion, the side tooth portion of the positioning adjusting strip (319) is intermittently engaged with the positioning assembly, and the straight tooth portion of the positioning adjusting strip (319) is used to push the positioning adjusting strip (319) to move axially along the engagement adjusting rod I (325).

8. The auxiliary fixture for the numerical control sharpening of the workpiece according to claim 6, characterized in that: The change engagement handle I (309) is provided with a corner opening for avoiding interference.

9. The auxiliary fixture for the numerical control sharpening of the workpiece according to claim 1, characterized in that: The operation assembly further includes a support adjusting strip (320) slidingly mounted on the mounting table (303), a sliding connection plate (327) for resetting the support adjusting strip (320) is spring-connected on the support adjusting strip (320), and the sliding connection plate (327) is slidingly mounted with the mounting table (303) through a sliding groove.

10. The auxiliary fixture for sharpening a workpiece according to claim 9, wherein: The operation assembly further includes an engagement adjusting rod II (326) rotatably mounted on the mounting table (303), a pushing cam is fixedly mounted on the engagement adjusting rod II (326), the pushing cam on the engagement adjusting rod II (326) is in contact with the support adjusting strip (320), and a change engagement handle II (310) for pushing the support adjusting strip (320) to engage with the positioning assembly is further fixedly mounted on the engagement adjusting rod II (326).

11. The auxiliary fixture for sharpening a workpiece according to claim 9, wherein: The support adjusting strip (320) comprises a light strip part, a side tooth part and a straight tooth part, the side tooth part of the support adjusting strip (320) is intermittently engaged with the support assembly I and the support assembly II, and the straight tooth part of the support adjusting strip (320) is used for pushing the support adjusting strip (320) to move along the axis of the engaging adjusting rod II (326).

12. The auxiliary fixture for sharpening of the workpiece according to claim 1, characterized in that: The operation assembly further comprises a detachable shell frame (305) fixedly installed on the mounting table (303), the support adjusting shaft I (306), the clamping adjusting shaft II (307) and the lifting adjusting shaft (308) are rotatably installed on the detachable shell frame (305), the support adjusting shaft I (306) is threadedly connected with the moving clamping assembly (5) and is used for assisting the moving clamping assembly (5) to move along the axis of the support adjusting shaft I (306), the clamping adjusting shaft II (307) is threadedly connected with the support assembly II and is used for assisting the support assembly II to move along the axis of the clamping adjusting shaft II (307), the lifting adjusting shaft (308) is fixedly installed with the rotating gear (328) used for adjusting the support assembly I, the support assembly II and the positioning assembly, and the lifting adjusting shaft (308) is further fixedly installed with a rotating disc used for assisting the lifting adjusting shaft (308) to rotate.

13. The auxiliary fixture for sharpening a workpiece according to claim 12, wherein: The detachable shell frame (305) is spring-connected with the clamping blocks (324) used for locking the connection state of the operation assembly, the positioning assembly, the support assembly I and the support assembly II, and the clamping blocks (324) are provided with at least six groups.

14. The auxiliary fixture for sharpening of the workpiece according to claim 1, characterized in that: The clamping assembly I comprises a clamping jaw (402) slidably installed on a fixed clamping seat (401), a fastening rack (404) and a sliding adjusting block (406), the clamping jaw (402) is fixedly installed with a reset spring (407) used for resetting, the clamping jaw (402) is further fixedly installed with a cylinder used for connecting the sliding adjusting block (406), the clamping jaw (402) is limitingly connected with the sliding adjusting block (406) through the cylinder, the sliding adjusting block (406) is threadedly connected with a threaded rotating shaft (405), the threaded rotating shaft (405) is rotatably installed on the fixed clamping seat (401), the threaded rotating shaft (405) is fixedly installed with a gear engaged with the fastening rack (404), the fastening rack (404) is fixedly installed with a spring, a first end of the spring on the fastening rack (404) is fixedly installed on the fastening rack (404), and a second end of the spring on the fastening rack (404) is fixedly installed on the fixed clamping seat (401), and the transmission assembly comprises a fastening cylinder I (403) fixedly installed on the fastening rack (404) and used for intermittently pushing the fastening rack (404) to move along the axis of the threaded rotating shaft (405) in the normal direction.

15. The auxiliary fixture for sharpening of the workpiece according to claim 1, characterized in that: The clamping assembly II comprises a sliding cavity block (506) fixedly installed on the moving clamping seat (501), a connecting sleeve shaft (507), a sliding push rod (505) slidingly installed on the connecting sleeve shaft (507), a rotating clamping block (502) for assisting workpiece centering clamping and rotatingly installed on the sliding push rod (505), the rotating clamping block (502) being slidingly installed on the sliding cavity block (506), a clamping top block (504) for workpiece centering clamping and movably installed on the rotating clamping block (502), a rotating shaft (508) rotatingly installed on the moving clamping seat (501), the sliding push rod (505) being slidingly installed on the rotating shaft (508), a deflection wheel (509) fixedly installed on the rotating shaft (508), an arc slot being arranged on the deflection wheel (509), a sliding cavity shaft (511) fixedly installed on the sliding push rod (505), the sliding cavity shaft (511) being slidingly arranged in the arc slot of the deflection wheel (509), a push rod being further fixedly installed on the deflection wheel (509), the transmission assembly II comprising a fastening cylinder II (503) for driving the clamping assembly II and fixedly installed on the moving clamping seat (501), a push frame (510) fixedly installed on the fastening cylinder II (503), the push frame (510) being slidingly connected with the push rod of the deflection wheel (509).

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