Numerical control sharpening auxiliary fixture for workpiece machining

Abstract

The present application relates to the technical field of part tooling, in particular to a kind of auxiliary fixture for numerical control sharpening workpiece processing, including clamping chuck, base assembly, auxiliary support assembly, fixed clamping assembly, mobile clamping assembly;Auxiliary support assembly includes installation platform fixedly installed on base assembly, the installation platform is fixedly installed with the support component I for the auxiliary support of workpiece, the support component I is fixedly installed with positioning assembly, the installation platform is also slidably installed with support component II, the installation platform is also fixedly installed with operating assembly;The present application is by setting the support component I of fixed position and the support component II of adjustable position, cooperate operating assembly can be different according to the length of workpiece the support point of workpiece is flexibly adjusted, when carrying out medium-length workpiece sharpening processing, the stability of workpiece can be maintained, the rigidity of workpiece is improved, avoid the phenomenon of workpiece when processing appears to cause workpiece processing failure.

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] The traditional blade clamping method is to use three-jaw chuck to clamp, but when machining long rod type blade, some shortcomings are shown, because the clamping point distance of grinding tool and blade is far, the vibration of blade in the machining process is caused, and the tool is easily produced, this phenomenon not only affects the machining precision 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 various specifications, the position of supporting structure needs to be adjusted for many times by processing personnel, and because the traditional supporting structure adopts bolt locking, it needs to consume long time to change the position, greatly reduces 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:

[0007] 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.

[0008] 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.

[0009] 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.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] Furthermore, the operating component also includes a detachable housing frame fixedly mounted on the mounting platform. A support adjustment shaft I, a clamping adjustment shaft II, and a lifting adjustment shaft are rotatably mounted on the detachable housing frame. The support adjustment shaft I is threadedly connected to the movable clamping component to assist the movable clamping component in moving along the axis of the support adjustment shaft I. The clamping adjustment shaft II is threadedly connected to the support component II to assist the support component II in moving along the axis of the clamping adjustment shaft II. A rotating gear for adjusting the support component I, support component II, and positioning component is fixedly mounted on the lifting adjustment shaft. A rotating disc for assisting in rotating the lifting adjustment shaft is also fixedly mounted on the lifting adjustment shaft. A locking block for locking the connection state between the operating component and the positioning component, support component I, and support component II is spring-connected to the detachable housing frame. At least six sets of locking blocks are provided.

[0014] Furthermore, the clamping assembly I includes a clamping jaw, a fastening rack, and a sliding adjustment block slidably mounted on a fixed clamping seat. A reset spring for resetting is fixedly mounted on the clamping jaw, and a cylinder for connecting the sliding adjustment block is also fixedly mounted on the clamping jaw. The clamping jaw is limitedly connected to the sliding adjustment block through the cylinder. A threaded shaft is threadedly connected to the sliding adjustment block. The threaded shaft is rotatably mounted on the fixed clamping seat. A gear that meshes with the fastening rack is fixedly mounted on the threaded shaft. A spring is fixedly mounted on the fastening rack. The first end of the spring on the fastening rack is fixedly mounted to the fastening rack, and the second end of the spring on the fastening rack is fixedly mounted to the fixed clamping seat. The transmission assembly includes a fastening cylinder I fixedly mounted on the fastening rack for intermittently pushing the fastening rack to move along the normal direction of the threaded shaft axis.

[0015] Furthermore, the clamping assembly II includes a sliding cavity block and a connecting sleeve shaft fixedly mounted on the movable clamping seat. A sliding push rod is slidably mounted on the connecting sleeve shaft. A rotating clamping block for assisting workpiece centering and clamping is rotatably mounted on the sliding push rod. The rotating clamping block is slidably mounted to the sliding cavity block. A clamping top block for workpiece centering and clamping is movably mounted on the rotating clamping block. A rotating shaft is also rotatably mounted on the movable clamping seat. The sliding push rod is slidably mounted to the rotating shaft. A deflection wheel is fixedly mounted on the rotating shaft. The deflection wheel is provided with an arc groove. A sliding cavity shaft is fixedly mounted on the sliding push rod. The sliding cavity shaft is slidably disposed in the arc groove of the deflection wheel. A push rod is also fixedly mounted on the deflection wheel. The transmission assembly II includes a fastening cylinder II fixedly mounted on the movable clamping seat for driving the clamping assembly II. A push frame is fixedly mounted on the fastening cylinder II. The push frame is slidably connected to the push rod of the deflection wheel.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0017] 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.

[0018] 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;

[0019] 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

[0020] 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:

[0021] Figure 1 This is a frontal view of the present invention;

[0022] Figure 2 This is a top view of the present invention;

[0023] Figure 3 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 4 This is a schematic view of the overall auxiliary support component of the present invention;

[0025] Figure 5 This is a partial cross-sectional schematic diagram of the auxiliary support component of the present invention;

[0026] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point A in the middle;

[0027] Figure 7 For the present invention Figure 5 Schematic diagram of the structure at point B;

[0028] Figure 8 This is a partial structural diagram of the operating component of the present invention;

[0029] Figure 9 For the present invention Figure 8 Schematic diagram of the structure at point C;

[0030] Figure 10For the present invention Figure 8 Schematic diagram of the structure at point D;

[0031] Figure 11 This is a partial cross-sectional schematic diagram of the fixing and clamping assembly of the present invention;

[0032] Figure 12 This is a partial cross-sectional view of the movable clamping component of the present invention.

[0033] The attached diagram shows the markings and corresponding component names:

[0034] 1-Clamping chuck; 2-Base assembly; 3-Auxiliary support assembly; 4-Fixed clamping assembly; 5-Moving clamping assembly; 201-Base plate; 202-Pneumatic connector; 203-Positioning block; 301-Fixed support seat; 302-Support platform; 303-Mounting platform; 304-Sliding support seat; 305-Removable housing frame; 306-Support adjustment shaft I; 307-Clamping adjustment shaft II; 308-Lifting adjustment shaft; 309-Handle changer I; 310-Handle changer 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-Guide light rod; 319-Positioning adjustment strip; 320 - Support adjustment bar; 321- Support adjustment screw; 322- Positioning adjustment screw; 323- Trigger block; 324- Locking block; 325- Engagement adjustment rod I; 326- Engagement adjustment rod II; 327- Sliding connecting plate; 328- Rotating gear; 401- Fixed clamping seat; 402- Clamping claw; 403- Fastening cylinder I; 404- Fastening rack; 405- Threaded rotating shaft; 406- Sliding adjustment block; 407- Return spring; 408- Shock-absorbing pad; 501- Moving 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- Push frame; 511- Sliding cavity shaft. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0036] Example 1

[0037] like Figure 1 , Figure 2 and Figure 3As shown, an auxiliary fixture for CNC workpiece grinding includes a clamping chuck 1, a base assembly 2, an auxiliary support assembly 3, a fixed clamping assembly 4, and a movable clamping assembly 5. The auxiliary support assembly 3 includes a mounting platform 303 fixedly mounted on the base assembly 2. A support assembly I for workpiece auxiliary support is fixedly mounted on the mounting platform 303. A positioning assembly for positioning the workpiece axis is fixedly mounted on the support assembly I. A support assembly II for long workpiece auxiliary support is also slidably mounted on the mounting platform 303. A drive assembly for driving the support assembly I, the positioning assembly, the support assembly II, and the movable clamping assembly is also fixedly mounted on the mounting platform 303. The holding assembly 5 is an operating component that provides centering support for the workpiece; the fixed clamping assembly 4 includes a fixed clamping seat 401 fixedly mounted on the base assembly 2, a clamping component I for intermittently locking the workpiece is movably mounted on the fixed clamping seat 401, and a transmission component I for driving the clamping component I is also fixedly mounted on the fixed clamping seat 401; the movable clamping assembly 5 includes a movable clamping seat 501 slidably mounted on the mounting table 303, a clamping component II for intermittently locking the workpiece is movably mounted on the movable clamping seat 501, and a transmission component II for driving the clamping component II is also fixedly mounted on the movable clamping seat 501.

[0038] During processing, the choice of whether to use support component II and movable clamping component 5 depends on the length of the workpiece. When the workpiece is short (0-100mm), it can be directly clamped and processed using clamping chuck 1. When the workpiece is of medium length (100mm-500mm), clamping chuck 1 is used in conjunction with fixed clamping component 4 and support component I to clamp and process the workpiece. When the workpiece is too long (over 500mm), clamping chuck 1 is used in conjunction with support component I, support component II, fixed clamping component 4, and movable clamping component 5 to clamp and process the workpiece. When processing long workpieces, the operation component is used to control support component II and movable clamping component 5. The position of part 5 is adjusted to the optimal support position. Then, the workpiece height is positioned using the operating component. After positioning, the support height is adjusted using the operating component. After adjustment, the moving clamping component 5 and the fixed clamping component 4 lock the workpiece a second time. Then, the workpiece is processed. When the workpiece needs to rotate, the fixed clamping component 4 and the moving clamping component 5 release the clamping of the workpiece. The clamping chuck 1 rotates, carrying the workpiece to complete the rotation. After the rotation is completed, the fixed clamping component 4 and the moving clamping component 5 clamp the workpiece again. Then, the processing is repeated until the workpiece is processed, thus completing the workpiece processing work.

[0039] The base assembly 2 includes a base plate 201 that is bolted to the machine tool. The base plate 201 is provided with a positioning block 203 that is slidably connected to the machine tool. A pneumatic connector 202 for transmitting high-pressure gas is fixedly installed on the base plate 201. The pneumatic connector 202 is connected to the fastening cylinder I 403 and the fastening cylinder II 503 through two delivery pipes respectively. The delivery pipes connecting the pneumatic connector 202 and the fastening cylinder II 503 are stretchable plastic pipes to prevent the air supply pipes from falling off when the moving clamping assembly 5 moves. During operation, the pneumatic compressor connected to the pneumatic connector 202 is used to pressurize and depress the fastening cylinder I 403 and the fastening cylinder II 503 respectively, so that the workpiece is in an unclamped state when the workpiece rotates, which facilitates the processing of the workpiece and avoids the repeated work of fixing the workpiece, which is time-consuming and labor-intensive.

[0040] Example 2

[0041] like Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, in this embodiment, the auxiliary support assembly 3 includes a mounting platform 303 fixedly installed on the base plate 201. A support assembly I for auxiliary support of the workpiece is fixedly installed on the mounting platform 303. The support assembly I includes a fixed support base 301 fixedly installed on the mounting platform 303. A fixed sleeve II 315 for adjusting the guide when supporting the workpiece is fixedly installed on the fixed support base 301. A lifting sliding rod 314 is slidably installed on the fixed sleeve II 315. The lifting sliding rod 314 is slidably connected to the fixed sleeve II 315 via a pin. This pin-type connection avoids the need for adjustment during support adjustments. When the lifting sliding rod 314 deflects, a deviation in the support occurs. A support platform 302 for supporting the workpiece is detachably mounted on the lifting sliding rod 314 via a threaded pin. A support adjusting screw 321 is threadedly connected to the lifting sliding rod 314. The support adjusting screw 321 is rotatably mounted to the fixed support base 301. A gear for intermittently meshing with the support adjusting bar 320 is fixedly mounted on the support adjusting screw 321. When machining medium-sized workpieces (workpiece length between 100mm and 500mm), the workpiece is inserted into the clamping port of the clamping chuck 1, and the clamping assembly is fixed. 4. The workpiece is locked in conjunction with the clamping chuck 1. Because the workpiece is relatively long, the length of the machining end is often greater than the length of the clamping end. Therefore, during machining, especially on the end face, the workpiece may experience tool deflection, leading to machining errors. Therefore, support component I is used to support the machining end to improve the rigidity of the workpiece and ensure machining accuracy. During operation, a suitable sliding support 304 is selected in advance according to the size of the workpiece to avoid the sliding support 304 being too large or too small, which could cause tool collision during machining. The machining operator operates the control components, using the positioning components... The clamping height of the workpiece is determined, and then the gear of the support adjustment bar 320 in the operating component meshes with the support adjustment screw 321. The operating component then pushes the support adjustment bar 320 to move, which in turn drives the support adjustment screw 321 to rotate. This causes the lifting sliding rod 314 to move along the axis of the fixed sleeve II 315 within the fixed sleeve II 315. The distance of movement matches the height measured by the positioning component. The movement of the lifting sliding rod 314 causes the sliding support seat 304 to press against the workpiece, thereby providing strong support to the workpiece, improving the rigidity of the workpiece during processing, and avoiding processing errors.

[0042] A positioning assembly for positioning the workpiece axis is fixedly installed on the fixed support base 301. The positioning assembly includes a fixed sleeve I 311 fixedly installed on the support assembly I. A positioning sliding rod 312 is splinedly connected to the fixed sleeve I 311. A positioning contact 313 for positioning the workpiece is slidably installed on the positioning sliding rod 312. A spring is fixedly installed on the positioning contact 313, with one end of the spring fixedly installed to the positioning contact 313 and the other end fixedly installed to the positioning sliding rod 312. A spring for transmitting positioning information is also fixedly installed inside the positioning sliding rod 312. The trigger block 323 for position information, the positioning sliding rod 312 is threadedly connected to the positioning adjusting screw 322, the positioning adjusting screw 322 is rotatably installed with the fixed sleeve I 311, and the positioning adjusting screw 322 is fixedly installed with a gear for intermittent connection with the operating component; before supporting the workpiece by the support component I and support component II, it is necessary to position the clamping height of the workpiece to avoid the support force of the support component I and support component II on the workpiece being too large, which would cause the workpiece to fail to rotate with the clamping chuck 1 during processing, resulting in repeated processing of a point. The phenomenon is that when the positioning component is in use, the operator operates the component to engage the gears of the positioning adjusting bar 319 and the positioning adjusting screw 322. This, in turn, pushes the positioning adjusting bar 319 to move, causing the positioning adjusting screw 322 to rotate. This, in turn, causes the positioning sliding rod 312 to move along the axis of the fixed sleeve I 311 within the fixed sleeve I 311. During positioning, the positioning contact 313 moves closer to the workpiece. After the positioning contact 313 contacts the workpiece, it continues to move upwards, causing the positioning contact 313 to... When the positioning contact 313 slides in the positioning sliding rod 312, the operator slows down the operation. When the bottom of the positioning contact 313 contacts the trigger block 323, the trigger block 323 sends a signal, and the operator stops the operation, 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 avoids the positioning component from directly contacting the workpiece rigidly, which would cause damage to the positioning head. It also determines the clamping height of the workpiece, providing accurate data for the support height of support component I and support component II.

[0043] The mounting table 303 is also fixedly equipped with an operating component for centering and supporting the workpiece by driving the support assembly I, positioning assembly, support assembly II, and moving clamping assembly 5. The operating component includes a positioning adjustment bar 319 slidably mounted on the mounting table 303. A sliding connecting plate 327 for resetting the positioning adjustment bar 319 is spring-connected to the positioning adjustment bar 319. The sliding connecting plate 327 is slidably mounted to the mounting table 303 through a slide groove. A meshing adjustment rod I 325 is rotatably mounted on the mounting table 303. A pusher is fixedly mounted on the meshing adjustment rod I 325. The moving cam and the push cam on the engagement adjusting rod I 325 are in contact with the positioning adjusting bar 319. The engagement adjusting rod I 325 is also fixedly installed with a shift handle I 309 for pushing the positioning adjusting bar 319 to engage with the positioning component. The positioning adjusting bar 319 includes a smooth bar, a side tooth, and a straight tooth. The side tooth of the positioning adjusting bar 319 engages intermittently with the positioning component. The straight tooth of the positioning adjusting bar 319 is used to push the positioning adjusting bar 319 to move axially along the engagement adjusting rod I 325. The shift handle I 309 is provided with a bend to avoid interference.

[0044] A support adjustment bar 320 is slidably mounted on the mounting platform 303. A sliding connecting plate 327 for resetting the support adjustment bar 320 is also spring-connected to the support adjustment bar 320. The sliding connecting plate 327 is slidably mounted to the mounting platform 303 through a sliding groove. A meshing adjustment rod II 326 is rotatably mounted on the mounting platform 303. A push cam is fixedly mounted on the meshing adjustment rod II 326. The push cam on the meshing adjustment rod II 326 is in contact with the support adjustment bar 320. A shift handle II 310 for pushing the support adjustment bar 320 to mesh with the support assembly is also fixedly mounted on the meshing adjustment rod II 326. The support adjustment bar 320 includes a smooth bar portion, a side tooth portion, and a straight tooth portion. The side tooth portion of the support adjustment bar 320 intermittently meshes with the support assembly I and the support assembly II. The straight tooth portion of the support adjustment bar 320 is used to push the support adjustment bar 320 to move axially along the meshing adjustment rod II 326.

[0045] The operating components also include a removable housing frame 305, mounting block I 316, and mounting block II 317 fixedly mounted on the mounting platform 303. A support adjustment shaft I 306, a clamping adjustment shaft II 307, and a lifting adjustment shaft 308 are rotatably mounted on the removable housing frame 305. A positioning light (not shown in the figure) for providing positioning information is also fixedly mounted on the removable housing frame 305. The support adjustment shaft I 306 is rotatably connected to mounting blocks I 316 and II 317 respectively. The support adjustment shaft I 306 is threadedly connected to the movable clamping assembly 5 to assist the movable clamping assembly 5 in moving along the axis of the support adjustment shaft I 306. The clamping adjustment shaft II 307 is rotatably connected to mounting blocks I 316 and II 317 respectively. The clamping adjustment shaft II 307 is connected to the support assembly II 308. The threaded connection is used to assist the support assembly II in moving along the axis of the clamping adjustment shaft II 307. A rotating gear 328 is fixedly installed on the lifting adjustment shaft 308. The rotating gear 328 intermittently meshes with the positioning adjustment bar 319 and the support adjustment bar 320 respectively. A rotating disc for assisting the rotation of the lifting adjustment shaft 308 is also fixedly installed on the lifting adjustment shaft 308. A spring-connected locking block 324 is provided on the detachable housing frame 305 to lock the connection state of the operation assembly with the positioning assembly, support assembly I, and support assembly II. There are six sets of locking blocks 324. The six sets of locking blocks 324 cooperate with the changing handle I 309 and changing handle II 310 in three groups respectively. The locking blocks 324 restrict the position of the changing handle I 309 and changing handle II 310.

[0046] During operation, the positioning component is positioned first. The operator pulls the shift handle I309 and rotates it 90° (e.g., ...). Figure 6(As shown) This causes the cam of the meshing adjustment rod I 325 to push the side teeth of the positioning adjustment bar 319 to mesh with the gear of the positioning adjustment screw 322, and the spur teeth to mesh with the rotating gear 328. At this time, the locking block 324 elastically fixes the position of the meshing handle I 309 (due to the spring connection, the operator can easily release the fixation with a little force). Then, by rotating the adjustment shaft 308 counterclockwise, the rotating gear 328 pushes the positioning adjustment bar 319 to move towards the support assembly I. During the movement, the sliding connecting plate 327 moves together, thereby pushing the positioning adjustment screw 322 to rotate, which in turn drives the positioning sliding rod 312 to move upward and closer to the workpiece, at the positioning contact 313. After the workpiece is secured, the operator reduces the rotation speed of the lifting adjustment shaft 308 and monitors the changes in the positioning light on the removable housing 305. When the bottom of the positioning contact 313 contacts the trigger block 323, the positioning light on the removable housing 305 changes. The operator stops the rotation of the lifting adjustment shaft 308 and continues to pull the shift handle I 309 to rotate it another 90° (180° compared to the initial state). The position is then elastically fixed by the locking block 324. Under the action of the spring in the sliding connecting plate 327, the side teeth of the positioning adjustment bar 319 disengage from the positioning adjustment screw 322, and the straight teeth disengage from the rotating gear 328, thus completing the workpiece clamping height positioning work.

[0047] Next, the operator pulls the shift handle II 310 to rotate 90°, causing the cam of the engagement adjusting rod II 326 to push the side gear of the support adjusting bar 320 to mesh with the gear on the support adjusting screw 321, and the spur gear to mesh with the rotating gear 328. At this time, the locking block 324 elastically fixes the position of the support adjusting bar 320. Then, by rotating the lifting adjusting shaft 308 clockwise, the rotating gear 328 is driven to rotate and push the support adjusting bar 320 towards the moving clamping assembly 5. The number of rotations of the lifting adjusting shaft 308 corresponds to the positioning. The lifting adjustment shaft 308 rotates the same number of times (the initial height of the support platform 302 and the initial height of the positioning contact 313 are compensated by a certain distance to compensate for the distance the positioning contact 313 slides down). During the movement, the sliding connecting plate 327 moves together, which in turn pushes the support adjustment screw 321 to rotate, thereby driving the lifting sliding rod 314 to move up and closer to the workpiece. This makes the sliding support seat 304 fit tightly against the workpiece, providing precise and powerful support. After the support height adjustment is completed, continue to pull the shifting handle II 310 and rotate it 9 times. 0° (rotated 180° compared to the initial state), and the position is elastically fixed by the locking block 324. Under the action of the spring of the sliding connecting plate 327, the side teeth of the support adjusting bar 320 disengage from the support adjusting screw 321, and the straight teeth disengage from the rotating gear 328, to avoid accidental contact during processing that could cause changes in the height of the support. After the workpiece processing is completed, the shift handle I 309 and shift handle II 310 are pulled in reverse 90°, causing the cam of the engagement adjusting rod I 325 to push the positioning adjusting bar 31. The side teeth of the 9th gear mesh with the gear of the positioning adjustment screw 322, and the spur teeth mesh with the rotating gear 328. This causes the cam of the meshing adjustment rod II 326 to push the side gear of the support adjustment bar 320 to mesh with the gear on the support adjustment screw 321, and the spur teeth to mesh with the rotating gear 328. The operator rotates the lifting adjustment shaft 308 clockwise, and the number of rotations is the same as before. This causes the positioning adjustment bar 319 and the support adjustment bar 320 to reset, thereby causing the support assembly I, support assembly II and positioning assembly to complete the reset work.

[0048] Example 3

[0049] like Figure 5As shown, in this embodiment, for machining long workpieces (workpieces with a length of 500mm or more), more support is needed to improve the rigidity of the workpiece and ensure that the workpiece does not deflect during machining. A support assembly II for auxiliary support of long workpieces is slidably mounted on the mounting table 303. The support assembly II includes a sliding support seat 304 slidably mounted on the mounting table 303. A fixed sleeve II 315 for adjusting the guide when supporting the workpiece is fixedly mounted on the sliding support seat 304. A lifting sliding rod 314 is slidably mounted on the fixed sleeve II 315. The lifting sliding rod 314 is slidably connected to the fixed sleeve II 315 via a pin. A movable mounting plate is installed on the lifting sliding rod 314. The system includes a support platform 302 for supporting the workpiece. A support adjustment screw 321 is threaded onto a lifting sliding rod 314. The support adjustment screw 321 is rotatably mounted on a sliding support seat 304. A gear for intermittent connection with the operating component is fixedly mounted on the support adjustment screw 321. When support component II is needed, the support height adjustment is synchronized with the adjustment of support component I and works on the same principle. When the lateral position of the support point needs to be adjusted, the operator rotates the clamping adjustment shaft II 307, which causes the lifting sliding rod 314 to move along the axis of the clamping adjustment shaft II 307, thereby adjusting the lateral position of support component II and changing the support point to provide stable support for the workpiece.

[0050] Example 4

[0051] like Figure 11 As shown, in this embodiment, the fixed clamping assembly 4 includes a fixed clamping seat 401 fixedly mounted on the base assembly 2. Two clamping jaws 402, a fastening rack 404, and a sliding adjustment block 406 are slidably mounted on the fixed clamping seat 401. Reset springs 407 for resetting are fixedly mounted on each of the two clamping jaws 402, and cylinders for connecting to the sliding adjustment block 406 are also fixedly mounted on each. Clamping plates for flexibly clamping the workpiece are also fixedly mounted on each. The two clamping jaws 402 are limitedly connected to the sliding adjustment block 406 via the cylinders. A threaded shaft 405 is threadedly connected to the sliding adjustment block 406. The threaded shaft 405 is rotatably mounted to the fixed clamping seat 401. A gear that meshes with a fastening rack 404 is fixedly mounted on the rotating shaft 405. A spring is fixedly mounted on the fastening rack 404. One end of the spring on the fastening rack 404 is fixedly mounted to the fastening rack 404, and the other end is fixedly mounted to the fixed clamping seat 401. A fastening cylinder I 403 for intermittently pushing the fastening rack 404 to move along the normal direction of the threaded rotating shaft 405 is fixedly mounted on the fastening rack 404. Two shock-absorbing pads 408 are fixedly mounted on the fixed clamping seat 401. The two shock-absorbing pads 408 cooperate with the clamping plates on the two clamping jaws 402 to flexibly clamp the workpiece (the clamping plates and shock-absorbing pads 408 are made of vibration-damping material to reduce the vibration experienced by the clamping chuck 1 during processing).

[0052] 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.

[0053] Example 5

[0054] 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.

[0055] When machining long workpieces (over 500mm), not only is it necessary to support the middle part of the workpiece, but also to perform secondary clamping near the machining end. The operator rotates the turntable on the support adjustment shaft I306, which in turn moves the movable clamping seat 501 along the axis of the support adjustment shaft I306 on the mounting table 303. Once moved to the appropriate position (20mm from the machining end face of the workpiece),... At 50mm, the V-groove of the movable clamping seat 501, in conjunction with the clamping top block 504, achieves three-point clamping of the workpiece. When machining the end face of the workpiece, the workpiece is locked and clamped, shortening the workpiece's sway arm distance, increasing the workpiece's rigidity during machining, and preventing tool deflection. During operation, air is supplied to the fastening cylinder II 503 through the pneumatic connector 202, causing the fastening cylinder II 503 to push the push frame 510 downward, which in turn drives the deflection wheel 509 to deflect around the rotation shaft 508, which in turn drives the sliding cavity shaft 511 downward, which in turn drives the sliding push rod 505 downward, which in turn pulls the rotating clamping block 502 downward. Under the constraint of the guide rail of the sliding cavity block 506, the rotating clamping block 502 rotates, causing the clamping top block 504 to hold the workpiece, thus completing the clamping operation.

[0056] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An auxiliary fixture for CNC grinding of workpieces, comprising a clamping chuck (1) and a base assembly (2), characterized in that: The auxiliary fixture also includes an auxiliary support assembly (3), a fixed clamping assembly (4), and a movable clamping assembly (5); wherein, the auxiliary support assembly (3) includes a mounting platform (303) fixedly installed on the base assembly (2), a support assembly I for workpiece auxiliary support is fixedly installed on the mounting platform (303), a positioning assembly for positioning the workpiece axis is fixedly installed on the support assembly I, a support assembly II for long workpiece auxiliary support is also slidably installed on the mounting platform (303), and an operating assembly for driving the support assembly I, the positioning assembly, the support assembly II and the movable clamping assembly (5) to center and support the workpiece; The fixed clamping assembly (4) includes a fixed clamping seat (401) fixedly installed on the base assembly (2), a clamping assembly I for intermittently locking 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 also fixedly installed on the fixed clamping seat (401); The movable clamping assembly (5) includes a movable clamping seat (501) slidably mounted on the mounting table (303), on which a clamping assembly II for intermittently locking the workpiece is movably mounted, and on which a transmission assembly II for driving the clamping assembly II to work is also fixedly mounted; The positioning assembly includes a fixed sleeve I (311) fixedly mounted on a support assembly I. A positioning sliding rod (312) is splinedly connected to the fixed sleeve I (311). A positioning contact (313) for positioning the workpiece is slidably mounted on the positioning sliding rod (312). A trigger block (323) for transmitting positioning information is also fixedly mounted on the positioning sliding rod (312). A positioning adjusting screw (322) is threadedly connected to the positioning sliding rod (312). The positioning adjusting screw (322) is rotatably mounted to the fixed sleeve I (311). A gear for intermittent connection with the operating assembly is fixedly mounted on the positioning adjusting screw (322). The operating components include a removable housing frame (305) fixedly mounted on a mounting platform (303). A support adjustment shaft I (306), a clamping adjustment shaft II (307), and a lifting adjustment shaft (308) are rotatably mounted on the removable housing frame (305). The support adjustment shaft I (306) is threadedly connected to the movable clamping assembly (5) to assist the movable clamping assembly (5) in moving along the axis of the support adjustment shaft I (306). The clamping adjustment shaft II (307) is threadedly connected to the support assembly II to assist the support assembly II in moving along the axis of the clamping adjustment shaft II (307). A rotating gear (328) for adjusting the support assembly I, the support assembly II, and the positioning assembly is fixedly mounted on the lifting adjustment shaft (308). A rotating disc for assisting in rotating the lifting adjustment shaft (308) is also fixedly mounted on the lifting adjustment shaft (308).

2. The auxiliary fixture for CNC grinding of workpieces according to claim 1, characterized in that: The support assembly I includes a fixed support base (301) fixedly mounted on a mounting platform (303). A fixed sleeve II (315) for adjusting the guide when supporting the workpiece is fixedly mounted on the fixed support base (301). A lifting sliding rod (314) is slidably mounted on the fixed sleeve II (315). The lifting sliding rod (314) is slidably connected to the fixed sleeve II (315) by a pin. A support platform (302) for supporting the workpiece is movably mounted on the lifting sliding rod (314). A support adjusting screw (321) is threadedly connected to the lifting sliding rod (314). The support adjusting screw (321) is rotatably mounted to the fixed support base (301). A gear for intermittent connection with the operating assembly is fixedly mounted on the support adjusting screw (321).

3. The auxiliary fixture for CNC grinding of workpieces according to claim 1, characterized in that: The support assembly II includes a sliding support seat (304) slidably mounted on a mounting platform (303). A fixed sleeve II (315) for adjusting the guide when supporting the workpiece is fixedly mounted on the sliding support seat (304). A lifting sliding rod (314) is slidably mounted on the fixed sleeve II (315). The lifting sliding rod (314) is slidably connected to the fixed sleeve II (315) by a pin. A support platform (302) for supporting the workpiece is movably mounted on the lifting sliding rod (314). A support adjusting screw (321) is threadedly connected to the lifting sliding rod (314). The support adjusting screw (321) is rotatably mounted to the sliding support seat (304). A gear for intermittent connection with the operating assembly is fixedly mounted on the support adjusting screw (321).

4. The auxiliary fixture for CNC grinding of workpieces according to claim 1, characterized in that: The operating component includes a positioning adjustment bar (319) that is slidably mounted on the mounting platform (303). A sliding connecting plate (327) for resetting the positioning adjustment bar (319) is spring-connected to the positioning adjustment bar (319). The sliding connecting plate (327) is slidably mounted on the mounting platform (303) via a sliding groove.

5. An auxiliary fixture for CNC grinding of workpieces according to claim 4, characterized in that: The operating component also includes a meshing adjustment rod I (325) rotatably mounted on the mounting platform (303). A push cam is fixedly mounted on the meshing adjustment rod I (325). The push cam on the meshing adjustment rod I (325) is in contact with the positioning adjustment bar (319). A meshing handle I (309) for pushing the positioning adjustment bar (319) to mesh with the positioning component is also fixedly mounted on the meshing adjustment rod I (325).

6. The auxiliary fixture for CNC grinding of workpieces according to claim 5, characterized in that: The positioning adjustment bar (319) includes a light bar portion, a side tooth portion and a straight tooth portion. The side tooth portion of the positioning adjustment bar (319) intermittently meshes with the positioning component. The straight tooth portion of the positioning adjustment bar (319) is used to push the positioning adjustment bar (319) to move axially along the meshing adjustment rod I (325).

7. An auxiliary fixture for CNC grinding of workpieces according to claim 5, characterized in that: The gear shift handle I (309) is provided with an incline to avoid interference.

8. An auxiliary fixture for CNC grinding of workpieces according to claim 1, characterized in that: The operating components also include a support adjustment bar (320) slidably mounted on the mounting platform (303), on which a sliding connecting plate (327) for resetting the support adjustment bar (320) is spring-connected, and the sliding connecting plate (327) is slidably mounted to the mounting platform (303) via a groove.

9. An auxiliary fixture for CNC grinding of workpieces according to claim 8, characterized in that: The operating component also includes a meshing adjustment rod II (326) rotatably mounted on the mounting platform (303). A push cam is fixedly mounted on the meshing adjustment rod II (326). The push cam on the meshing adjustment rod II (326) is in contact with the support adjustment bar (320). A meshing handle II (310) for pushing the support adjustment bar (320) to mesh with the positioning component is also fixedly mounted on the meshing adjustment rod II (326).

10. An auxiliary fixture for CNC grinding of workpieces according to claim 8, characterized in that: The support adjustment bar (320) includes a smooth bar portion, a side tooth portion and a straight tooth portion. The side tooth portion of the support adjustment bar (320) intermittently meshes with the support assembly I and the support assembly II. The straight tooth portion of the support adjustment bar (320) is used to push the support adjustment bar (320) to move axially along the meshing adjustment rod II (326).

11. An auxiliary fixture for CNC grinding of workpieces according to claim 1, characterized in that: The detachable housing (305) is spring-connected with locking blocks (324) for locking the connection state of the operating component, positioning component, support component I, and support component II. The locking blocks (324) are provided in at least six sets.

12. An auxiliary fixture for CNC grinding of workpieces according to claim 1, characterized in that: The clamping assembly I includes a clamping jaw (402), a fastening rack (404), and a sliding adjustment block (406) slidably mounted on a fixed clamping base (401). A reset spring (407) for resetting is fixedly mounted on the clamping jaw (402). A cylinder for connecting the sliding adjustment block (406) is also fixedly mounted on the clamping jaw (402). The clamping jaw (402) is limitedly connected to the sliding adjustment block (406) through the cylinder. A threaded shaft (405) is threadedly connected to the sliding adjustment block (406). The threaded shaft (405) is connected to the fixed clamping base (401). The seat (401) is rotatably mounted. A gear that meshes with a fastening rack (404) is fixedly mounted on the threaded shaft (405). A spring is fixedly mounted on the fastening rack (404). The first end of the spring on the fastening rack (404) is fixedly mounted to the fastening rack (404). The second end of the spring on the fastening rack (404) is fixedly mounted to the fixed clamping seat (401). The transmission assembly includes a fastening cylinder I (403) fixedly mounted on the fastening rack (404) for intermittently pushing the fastening rack (404) to move along the axis of the threaded shaft (405) in the normal direction.

13. An auxiliary fixture for CNC grinding of workpieces according to claim 1, characterized in that: The clamping assembly II includes a sliding cavity block (506) and a connecting sleeve shaft (507) fixedly mounted on a 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 with the sliding cavity block (506). A clamping top block (504) for workpiece centering and clamping is movably mounted on the rotating clamping block (502). A rotating shaft (508) is also rotatably mounted on the movable clamping seat (501). The sliding push rod (505) and the rotating shaft (508) are connected... The rotating shaft (508) is fixedly mounted with a deflection wheel (509), which has an arc groove. A sliding cavity shaft (511) is fixedly mounted 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 mounted on the deflection wheel (509). The transmission assembly II includes a fastening cylinder II (503) fixed on the movable clamping seat (501) for driving the clamping assembly II. A push frame (510) is fixedly mounted on the fastening cylinder II (503). The push frame (510) is slidably connected to the push rod of the deflection wheel (509).

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