TW201434576A - Workpiece auxiliary clamping mechanism for processing machine - Google Patents

Abstract

A workpiece auxiliary clamping mechanism for a processing machine comprises a center frame having a center hole and several sets of clamping apparatuses. A workpiece is penetratingly arranged in the center hole of the center frame. Each of the clamping apparatuses comprises a fixation seat that is fixed on the center frame and has a first slide slot, a slide seat that is disposed in the first slide slot of the fixation seat and has a second slide slot, a clamp seat that is abutted against the slide seat and has several through holes, an adjustment block that is disposed in the second slide slot of the slide seat and has a fixation hole, and a fixation member that is penetratingly arranged in one of the through holes of the clamp seat and fixed in the fixation hole of the adjustment block. Accordingly, the position of the clamp seat assembled in the adjustment block can be adjusted in accordance with the size of the workpiece. After the assembly, the clamp seat still can be moved to an appropriate position via the movement of the adjustment block, so that the workpiece can be exactly clamped therewith.

Description

Workpiece auxiliary clamping mechanism of processing machine

The invention relates to a processing machine, and more particularly to a workpiece auxiliary clamping mechanism for a processing machine.

Generally, before processing a long-length workpiece using a machining machine (such as a lathe or a grinder), the other end of the workpiece to be processed must be clamped and fixed by an auxiliary clamping mechanism to ensure that the long-shaped workpiece is processed. The process has sufficient stability to enable the workpiece to achieve good machining accuracy. The machining requirements of such workpieces are especially important for the precision machining of the grinding machine.

The conventional auxiliary clamping mechanism mainly comprises a center frame, the center frame has a central hole for the workpiece to be pierced, and at least three sets of clamping seats are arranged around the central hole, and each clamping seat can be driven by an adjusting bolt. The center hole is radially adjacent to or away from the workpiece for holding or releasing the workpiece. However, in this conventional design, each of the clamps is screwed into the screw hole of the body of the center frame by the adjusting bolt, so that as long as one of the clamps is subjected to the long-term swaying feedback force of the workpiece due to long-term use, the center will be caused. Accumulated wear of the screw of the frame causes the screw feed gap to become large, which affects the machining accuracy of the workpiece. Once the cumulative wear of the screw is too large, it is impossible to repair only a single holder at this time. Usually, the three clamps together with the central frame are required. Replacement, this will result in the acquisition cost of the entire group of clamping mechanisms is not economical. In addition, the adjusting bolts of the clamps of the auxiliary clamping mechanism can only adjust the displacement stroke in the screw holes of the center frame, so the distance that the adjusting bolt can be displaced is the length of the bolt minus the length of the screw hole of the center frame, in other words, once If the size of the workpiece to be processed is too large or too small, the clamping and telescopic distance that each of the above-mentioned clamps can provide will be improperly restricted and cannot be used. In this case, unless another auxiliary clamping mechanism of different size is replaced, it will not be able to continue. Subsequent processing operations will not only increase the cost of the replacement work of the auxiliary clamping mechanism, but also cost a lot of auxiliary clamping mechanisms of different sizes.

The main object of the present invention is to provide a workpiece auxiliary clamping mechanism of a processing machine, which is easy to assemble and convenient to maintain, and can be based on the workpiece. The multi-stage stroke adjustment is used to ensure the workpiece has good processing stability and machining accuracy.

In order to achieve the above object, the workpiece auxiliary clamping mechanism of the present invention comprises a center frame and a multi-array jig. The center frame has a center hole for a workpiece to be worn; each of the clamps has a fixing seat, a sliding seat, a clamping seat, an adjusting block, and a fixing member fixed to the center frame a first sliding groove extending along a radial direction of the central hole, the sliding seat being slidably disposed in the first sliding slot of the fixing seat and having the first sliding parallel a second sliding slot of the slot, the clamping seat abutting against a side of the sliding seat and having a plurality of perforations, the plurality of perforations being arranged at intervals along the extending direction of the second sliding slot, the adjusting block being slidable The fixing member is disposed in the second sliding slot of the sliding seat and has a fixing hole. The fixing member is selectively disposed in one of the through holes of the clamping seat and fixed in the fixing hole of the adjusting block for The clamping seat and the adjusting block are connected together, so that the clamping seat can be adjusted to a proper position according to the size of the workpiece, and the end of the fixing member abuts against the sliding seat for the clamping seat and the adjusting block Fixed to the slider to complete positioning.

In the embodiment of the present invention, each of the clamps further has a fine adjustment bolt, and the fine adjustment bolt is rotatably attached to one end surface of the fixing base and screwed into one end hole of the sliding seat for driving the Slide the seat to fine tune the position of the holder.

In an embodiment of the present invention, one side of the sliding seat has at least one first tooth portion, and one side of the clamping seat has at least one second tooth portion, and the first tooth portion of the sliding seat and the first tooth portion of the sliding seat The two tooth portions are engaged with each other to increase the bonding strength between the two.

In the embodiment of the present invention, each of the clamps further has a positioning bolt, and the positioning bolt is screwed into one of the positioning screw holes of the fixing base and pressed against the clamping seat to improve the structural stability of the clamping seat. .

Thereby, the workpiece auxiliary clamping mechanism of the present invention can stably hold the workpieces of different sizes by the different locking positions of the fixing member and the movement of the adjusting block, so as to provide a good Processing stability and Machining accuracy, and each of the jigs can be easily removed from the center frame for replacement or repair of some parts, and does not need to be replaced together with the center frame to effectively reduce maintenance costs.

10‧‧‧Workpiece auxiliary clamping mechanism

20‧‧‧ center frame

22‧‧‧First curved frame

24‧‧‧Second curved frame

26‧‧‧ Quick release parts

28‧‧‧ center hole

30‧‧‧Clamp

31‧‧‧ fixed seat

312‧‧‧First chute

314‧‧‧ Guide slot

316‧‧‧Locating screw holes

32‧‧‧Slide

321‧‧‧ Guidance Department

322‧‧‧First tooth

323‧‧‧Second chute

324‧‧‧The First Large Diameter Department

325‧‧‧First Footpath

326‧‧‧End hole

33‧‧‧Clip seat

332‧‧‧second tooth

334‧‧‧Inlay

336‧‧‧Perforation

34‧‧‧Adjustment block

342‧‧‧The Second Large Diameter Department

344‧‧‧Second Footpath

346‧‧‧Fixed holes

35‧‧‧Fixed parts

36‧‧‧ fine-tuning bolts

361‧‧‧fine tuning bolt head

363‧‧‧ fine-tuning studs

37‧‧‧ Positioning bolt

371‧‧‧Locating bolt head

373‧‧‧ Positioning studs

38‧‧‧ pressure plate

40, 42‧‧‧ workpiece

Figure 1 is a plan view of the present invention.

Figure 2 is another plan view of the present invention, mainly showing the state when the center frame is opened.

Figure 3 is a perspective view of the jig of the present invention.

Figure 4 is an exploded perspective view of the jig of the present invention.

Figure 5 is a plan view of the present invention for clamping a large-sized workpiece.

Figure 6 is a plan view of the present invention for clamping a small-sized workpiece.

Referring to Figures 1 and 2, the workpiece auxiliary clamping mechanism 10 of the present invention is applicable to various processing machines (e.g., lathes or grinders) and includes a center frame 20 and three sets of clamps 30.

The center frame 20 has a first curved frame body 22 and a second curved frame body 24, and one end of the first curved frame body 22 and one end of the second curved frame body 24 are pivotally connected to each other. The other end of an arcuate frame 22 and the other end of the second arcuate frame 24 are detachably coupled together by a quick release member 26. When the quick release member 26 is opened, the first curved frame body 22 and the second curved frame body 24 of the center frame 20 are separated from each other to place a workpiece 40, 42 on the first curved frame of the center frame 20. Between the body 22 and the second curved frame body 24, when the quick release member 26 is locked, the first curved frame body 22 and the second curved frame body 24 of the center frame 20 are closed to form a central hole 28. For the workpieces 40, 42 to be worn (as shown in Figures 5 and 6).

Referring to the figures 1 , 3 and 4 , the clamps 30 are arranged at equal angles with the central hole 28 of the center frame 20 as an axis, and have a fixing base 31 , a sliding seat 32 , a clamping seat 33 , An adjusting block 34, two fixing members 35 (actually only need at least one), a fine adjustment bolt 36, and a positioning bolt 37, The fixing seat 31 is fixed to one side of the center frame 20 and has a first sliding slot 312 and two guiding slots 314. The first sliding slot 312 extends along the radial direction of the central hole 28, and the two guiding slots 314 are oppositely located. On both sides of the first sliding slot 312, in addition, a pressing plate 38 is locked on one end surface of the fixing base 31.

The sliding block 32 is slidably disposed in the first sliding slot 312 of the fixing base 31 and has a guiding portion 321 on the opposite sides of the sliding seat 32 for being embedded in the guiding slot 314 of the fixing base 31, so that the sliding seat 32 It can move more stably and smoothly along the first chute 312. In addition, one side of the sliding seat 32 has two first tooth portions 322 (actually only at least one), and a second sliding slot parallel to one of the first sliding grooves 312 is disposed between the two first tooth portions 322. 323. The second chute 323 has a T-shaped cross section and has a first large diameter portion 324 and a first small diameter portion 325 that connects the first large diameter portion 324.

The clamping seat 33 has two second tooth portions 332 (actually only at least one) facing one side of the sliding seat 32 for engaging the first tooth portion 322 of the sliding seat 32 so that the clamping seat 33 is in contact with the sliding seat At 32 o'clock, the bond strength between the two can be improved. Furthermore, the clamping seat 33 further has a recess 334 between the two second tooth portions 332. The recess 334 engages the first small diameter portion 325 of the second sliding slot 323 of the sliding seat 32, and the slot of the recessed groove 334 The diameter is substantially equal to the diameter of the first small diameter portion 325 of the second sliding groove 323. Further, the clamping seat 33 has a plurality of perforations 336 which are arranged at intervals along the extending direction of the second sliding groove 323.

The length of the adjusting block 34 is smaller than the length of the second sliding slot 323 of the slider 32, and has a T-shaped cross-sectional shape, so that the adjusting block 34 has a second large diameter portion 342 and a second connecting large second diameter portion 342 Two small diameter portions 344. The second large diameter portion 342 of the adjusting block 34 is embedded in the first large diameter portion 324 of the second sliding slot 323 of the sliding block 32, and the second small diameter portion 344 of the adjusting block 34 is embedded in the second sliding portion 32. The first small diameter portion 325 of the chute 323 and the recess 334 of the clamp 33 are disposed. In addition, the adjusting block 34 has two fixing holes 346 which are threaded (actually only need at least one), and each fixing hole 346 penetrates the second large diameter portion 342 and the second small diameter portion 344 and communicates with one of the clamping seats 33. Perforation 336.

Each of the fixing members 35 is inserted into one of the through holes 336 of the clamping seat 33 and is screwed into the fixing hole 346 of the adjusting block 34 for connecting the clamping seat 33 and the adjusting block 34 to each other. Together, when the fixing members 35 are locked to the sliding seat 32 by their own ends, the positioning of the clamping seat 33 and the adjusting block 34 to the sliding seat 32 are completed.

The fine adjustment bolt 36 has a fine adjustment bolt head 361 and a fine adjustment stud 363. The fine adjustment bolt head 361 abuts against the pressure plate 38. One end of the fine adjustment screw 363 is connected with the fine adjustment bolt head 361, and the other end of the fine adjustment screw 363 is screwed on the sliding seat. The one end hole 326 of the 32 is used to drive the sliding block 32 to move along the first sliding slot 312 of the fixing base 31 when rotating.

The positioning bolt 37 has a positioning bolt head 371 and a positioning stud 373. One end of the positioning stud 373 is connected to the positioning bolt head 371. The other end of the positioning stud 373 is screwed into the positioning screw hole 316 of the fixing base 31. To be pressed against the holder 33 by the positioning bolt head 371 when locked.

Referring to FIGS. 4 and 5, after the workpiece 40 to be processed is passed through the center hole 28 of the center frame 20, the fixing members 35 are loosened to release the pressing relationship between the fixing members 35 and the sliding block 32. At this time, the clip 33 and the adjusting block 34 are still connected together, and then the clip 33 is slightly pressed against the surface of the workpiece 40 by the movement of the adjusting block 34 in the second chute 323, and then the fixing members are locked. 35 to complete the positioning of the holder 33, and then rotate the fine adjustment bolt 36 according to the actual situation to drive the carriage 32 to move along the first sliding slot 312, so that the movement of the clamping seat 33 through the sliding seat 32 does abut against the surface of the workpiece 40. The fine adjustment effect is achieved, and finally the positioning bolt 37 is locked, so that the positioning bolt 37 is pressed against the clamping seat 33 for improving the structural stability of the clamping seat 33.

If the size of the workpiece 42 to be processed is changed, as shown in Figures 4 and 6, the fixing members 35 must be removed first to release the connection relationship between the holder 33 and the adjusting block 34, so that the holder 33 is completely The slider 32 is separated, and the adjusting block 34 is held in the second sliding slot 323 by the T-shaped cross-section between the second sliding slot 323, and then the position of the clamping seat 33 is directly moved to the position After the surface of the workpiece 42 is held by the first tooth portion 332 and the first portion of the slider 32 The tooth portion 322 is formed to be engaged, and then the fixing member 35 is locked in the appropriate position of the through hole 336 and the fixing hole 346, so that the clamping seat 33 and the adjusting block 34 are reconnected together, and the adjusting block 34 can be adjusted according to the actual situation. The position of the clamping seat 33 is adjusted by the movement in the second sliding slot 323 for performing the first fine adjustment of the position of the clamping seat 33 and then locking the fixing members 35, and then rotating the fine adjustment bolt 36 to the clamping seat 33. The position is fine-tuned in the second stage so that the holder 33 does abut against the surface of the workpiece 42, and finally the positioning of the holder 33 is completed after the positioning bolt 37 is locked.

In summary, the clamp 30 provided by the workpiece auxiliary clamping mechanism 10 of the present invention can be locked in the different through holes 336 of the clamping seat 33 by the fixing members 35, and fits the adjusting block 34 in the second sliding slot 323. The movement enables the movement distance of the holder 33 to be multi-stagely adjusted to stably hold the workpieces 40 and 42 of different sizes, thereby providing good processing stability and processing precision, and at the same time, no need to make Different sized workpieces assist the clamping mechanism 10 to save manufacturing costs. On the other hand, if one or more sets of jigs 30 are damaged by long-term use of the long-term sway feedback force of the rotation of the workpieces 40, 42, the user can easily detach the damaged jig 30 from the center frame 20, In order to replace or repair parts, it is not necessary to replace them with the center frame 20 to improve maintenance convenience and reduce maintenance costs.

10‧‧‧Workpiece auxiliary clamping mechanism

20‧‧‧ center frame

22‧‧‧First curved frame

24‧‧‧Second curved frame

26‧‧‧ Quick release parts

28‧‧‧ center hole

30‧‧‧Clamp

Claims (10)

A workpiece auxiliary clamping mechanism of a processing machine, comprising: a center frame having a center hole; and a multi-array fixture having a fixing seat, a sliding seat, a clamping seat, an adjusting block, and a fixing component, respectively The fixing seat is fixed to one side of the center frame and has a first sliding slot. The first sliding slot extends along a radial direction of the central hole, and the sliding seat is slidably disposed on the first sliding of the fixing seat. a second sliding slot parallel to one of the first sliding slots, the clamping seat abutting against one side of the sliding seat and having a plurality of perforations, the plurality of perforations extending along the extending direction of the second sliding slot The adjusting block is slidably disposed in the second sliding slot of the sliding seat and has a fixing hole. The fixing member is selectively disposed on one of the clamping holes and fixed to the adjusting block. The fixing hole is configured to connect the clamping seat and the adjusting block together, and the end of the fixing member abuts against the sliding seat for fixing the clamping seat and the adjusting block to the sliding seat. The workpiece auxiliary clamping mechanism of the processing machine of claim 1, wherein each of the clamps further has a fine adjustment bolt, and the fine adjustment bolt is rotatably attached to one end surface of the fixing base and screwed on the sliding seat. One of the end holes is used to drive the slide to move. The workpiece auxiliary clamping mechanism of the processing machine of claim 2, wherein the end surface of the fixing seat is provided with a pressing plate, the fine adjustment bolt has a fine adjustment bolt head and a fine adjustment stud, and the fine adjustment bolt head abuts against the pressure plate. One end of the fine adjustment stud is connected to the fine adjustment bolt head, and the other end of the fine adjustment screw is screwed into the end hole of the sliding seat. The workpiece-assisted clamping mechanism of the processing machine of claim 1, wherein the fixing seat has two guiding slots, and the two guiding slots are oppositely located on opposite sides of the first sliding slot, and the opposite sides of the sliding seat respectively have a guiding portion is embedded in the guiding groove of one of the fixing seats. The workpiece auxiliary clamping mechanism of the processing machine of claim 1, wherein the second sliding slot of the sliding seat has a first large diameter portion and a first small diameter portion that connects the first large diameter portion, the adjustment The block has a second large diameter portion and a second small diameter portion connected to the second large diameter portion, and the second large diameter portion of the adjusting block is embedded in the first large diameter portion of the second sliding slot. The second small diameter portion of the block is embedded in the first small diameter portion of the second sliding slot; the fixing hole extends through the second large diameter portion and the second small diameter portion. The workpiece-assisted clamping mechanism of the processing machine of claim 5, wherein the clamping seat has a slot with respect to a side of the sliding seat, the slot engaging the first small diameter portion of the second sliding slot, and the bracket The slot diameter of the slot is substantially equal to the slot diameter of the first small diameter portion of the second slot; the second small diameter portion of the adjustment block is embedded in the first small diameter portion of the second slot of the slider and Between the slots of the holder. The workpiece auxiliary clamping mechanism of the processing machine of claim 5, wherein one side of the sliding seat has two first tooth portions, and the second sliding groove is located between the two first tooth portions, one of the clamping seats The side surface has two second tooth portions, and the groove is located between the two second tooth portions, and the first tooth portion of the sliding seat and the second tooth portion of the clamping seat are engaged with each other. The workpiece auxiliary clamping mechanism of the processing machine of claim 1, wherein each of the clamps further has a positioning bolt, the positioning bolt has a positioning bolt head and a positioning stud, and the positioning bolt head is pressed against the clamping seat. , the positioning stud The positioning bolt head is connected to one end, and the other end of the positioning stud is screwed into one of the positioning screw holes of the fixing seat. The workpiece auxiliary clamping mechanism of the processing machine of claim 1, wherein the fixing member is screwed into the fixing hole of the adjusting block. The workpiece assisting clamping mechanism of the processing machine of claim 1, wherein the multi-array fixture is arranged at an equiangular angle with the center hole of the center frame as an axis.