CN217889698U - Cold sawing machine - Google Patents

Abstract

The utility model provides a cold sawing machine, including the base case, install the main shaft slide that can remove on the crossbeam of base case, set up cutting motor and cutting main shaft on the main shaft slide, be connected through axis of rotation and drive belt between cutting motor and the cutting main shaft, still install the compression bar that can go up and down and can remove the movable clamping plate that is close to fixed clamping plate on the base case, through the compression bar, fixed clamping plate and movable clamping plate realize the location clamp tight to the work piece, and realize the feed-in of work piece through feeding mechanism, can effectively avoid the swing of work piece in the cutting process, and furthest reduces rocking of cutting main shaft, guarantee the normal clear of cutting operation, improve the cutting quality of work piece, the life of cutter has still been prolonged simultaneously.

Description

Cold sawing machine

Technical Field

The utility model belongs to the technical field of the cutting equipment technique and specifically relates to a cold saw machine.

Background

Along with the development of modern machining industry, the cutting quality and the precision requirement on machined parts such as sectional materials are continuously improved, the traditional manual cutting is replaced by the cutting equipment, the resistance generated by the cutter in the cutting process of the workpiece is large, the workpiece can swing in the positioning feeding process, and the like, the main shaft where the cutter is located can also swing, so that the normal cutting operation can be influenced, the cutting quality of the workpiece can be reduced, and the service life of the cutter can be influenced.

Disclosure of Invention

An object of the utility model is to provide a cold saw machine installs on the base case and can carry out the compressing tightly pole and the grip block of centre gripping location to the work piece, and the cutting main shaft passes through transmission such as drive belt to be connected with the cutting motor, can avoid the swing of work piece and furthest reduce rocking of cutting main shaft when the cutting, has solved the problem among the prior art.

The utility model provides a technical scheme that its technical problem adopted is: a cold sawing machine, including the base case, install the crossbeam on the roof of base case, install the main shaft slide that can lateral shifting and vertical lift on the crossbeam, install cutting motor and transmission shaft at main shaft slide upside, the cutting main shaft is installed to the main shaft slide downside, the saw bit is installed to the one end of cutting main shaft, wherein install the first drive belt of matched with between the output shaft of cutting motor and the one end of transmission shaft, install the matched with second drive belt between the other end of transmission shaft and the cutting main shaft, set up on the roof of base case and dodge the groove with saw bit matched with rectangular, lift cylinder is installed to the both sides of base case, install the compression bar that the level set up between lift cylinder's the piston rod, the compression bar is located the downside of slide, still install the clamp cylinder that fixed clamp plate and level set up on the roof of base case, install the activity clamp plate that corresponds with fixed clamp plate on clamp cylinder's the piston rod, still install feeding mechanism in the rear side of base case, feeding mechanism can send the material to fixed clamp plate forward, between activity clamp plate and the compression bar. The transverse moving mechanism comprises a transverse sliding rail and a transverse moving motor, the transverse sliding rail is provided with the transverse moving sliding plate capable of transversely moving, the output shaft of the transverse moving motor is provided with a transverse moving lead screw, the transverse moving sliding plate is provided with a transverse moving sliding block matched with the transverse sliding rail and a transverse moving screw nut matched with the transverse moving lead screw, the vertical moving structure comprises a vertical sliding rail and a vertical moving motor, the transverse moving motor is arranged on the transverse moving sliding plate, the output shaft of the vertical moving motor is provided with a vertical moving lead screw, the main shaft sliding plate is provided with a vertical sliding block matched with the vertical sliding rail and a vertical moving screw nut matched with the vertical moving lead screw, the transverse moving motor can be started to drive the main shaft sliding plate to transversely move, and the vertical moving motor can be started to drive the main shaft sliding plate to vertically move. The clamping cylinder is installed on the adjusting seat, two adjusting sliding grooves which are arranged side by side are formed in the top plate of the base box, an adjusting sliding block matched with the adjusting sliding grooves is arranged at the bottom of the adjusting seat, a clamping groove plate is further arranged between the two adjusting sliding grooves, a plurality of clamping groove blocks which are arranged at equal intervals are arranged on the clamping groove plate, the top surface of each clamping groove block is a horizontal plane, one side surface of each clamping groove block is an inclined plane, a limiting block which can rotate is installed in the adjusting seat through an adjusting rotating shaft and can be attached to the inclined plane, and the distance between the adjusting seat and the fixed clamping plate can be changed when the limiting block is located between different clamping groove blocks. The feeding mechanism comprises a feeding lower lathe bed and a feeding upper lathe bed which are arranged up and down, a U-shaped feeding drive plate capable of moving is arranged between the feeding lower lathe bed and the feeding upper lathe bed, a feeding slide rail and a feeding motor are arranged on the feeding lower lathe bed, a feeding lead screw is arranged on an output shaft of the feeding motor, a feeding slide block matched with the feeding slide rail and a feeding screw nut matched with the feeding lead screw are arranged at the bottom of the U-shaped feeding drive plate, a plurality of feeding rolling shafts arranged along the length direction are arranged on the feeding upper lathe bed, a rear tail fixing clamp is arranged at one end of the U-shaped feeding drive plate, a horizontally arranged rear tail clamping cylinder is arranged at the other end of the U-shaped feeding drive plate, a rear tail clamping plate matched with the rear tail fixing clamp is arranged on a piston rod of the rear tail clamping cylinder, the rear tail clamping plate is located at the upper position of the feeding rolling shafts, a horizontally arranged rear tail guide plate is further arranged on the rear tail fixing clamp, a guide slide rail is arranged at the bottom of the rear tail guide plate, and a guide slide block matched with the guide rail is arranged at the top of the rear tail clamping plate. The cutting main shaft comprises a main shaft shell fixedly arranged on a main shaft sliding plate, a main shaft rod capable of rotating is arranged in the main shaft shell in a matching mode, a first bearing cover is arranged at the front end of the main shaft shell in a matching mode, a second bearing cover is arranged at the rear end of the main shaft shell in a matching mode, a first thread is arranged at one end, penetrating out of the first bearing cover, of the main shaft rod, a gland nut is arranged on the first thread in a matching mode, a saw blade mounting seat is fixedly arranged on the main shaft rod between the first thread and the first bearing cover, the saw blade mounting seat and the main shaft rod are integrally formed, a saw blade gland is sleeved on the main shaft rod between the saw blade mounting seat and the gland nut, the gland nut can be rotated to push the saw blade gland to move close to the saw blade mounting seat, a first limiting groove is formed in the front end of the main shaft shell, and a front end bearing is arranged in the first limiting groove in a matching mode, the main shaft rod in the main shaft shell is provided with a limiting clamping groove, the limiting clamping groove is matched with a vertical clamping shell coupling, the vertical clamping shell coupling is contacted with an inner ring of a front end bearing, a first bearing cover is contacted with an outer ring of the front end bearing, a second thread is arranged on the main shaft rod between the front end bearing and a saw blade mounting seat, a bearing gland nut is matched and installed on the second thread, the bearing gland nut can rotate to be contacted with the inner ring of the front end bearing, the first limiting groove, the vertical clamping shell coupling, the first bearing cover and the bearing gland nut limit the front end bearing, the main shaft rod penetrates out of one end of the second bearing cover and is provided with a key groove, and a rear end bearing is matched and installed between the main shaft rod and the main shaft shell close to the position of the second bearing cover. The front end bearing is two symmetrically-arranged angular contact ball bearings which are installed in a first limiting groove in a matched mode, the two angular contact ball bearings are installed back to back, the wide faces of the outer rings of the angular contact ball bearings are opposite, the narrow faces of the inner rings are opposite, the vertical type clamping shell coupling is in contact with the inner rings of the inner side angular contact ball bearings, the first bearing cover is in contact with the outer rings of the outer side angular contact ball bearings, the bearing compression nuts can rotate to be in contact with the inner rings of the outer side angular contact ball bearings, and the first limiting groove, the vertical type clamping shell coupling, the first bearing cover and the bearing compression nuts limit the two angular contact ball bearings. The front end bearing is a cylindrical cross roller bearing. The saw blade mounting seat is provided with threaded counter bores which are circumferentially arranged, the saw blade gland is provided with a counter bore which corresponds to the threaded counter bores, and the threaded counter bores and the counter bore are internally provided with connecting bolts in a matched mode. Two groups of fastening bolts which are rotationally symmetrical are arranged between the two semi-annular sleeves of the vertical type clamping shell coupling. The end face of one side, close to the saw blade mounting seat, of the bearing compression nut is provided with a rotary clamping groove which is circumferentially arranged, the periphery of the bearing compression nut is provided with a screw hole matched with the set screw, and the screw hole is located on the outer side of the first bearing cover.

The utility model has the advantages of: a cold saw machine, including the base case, install the main shaft slide that can remove on the crossbeam of base case, set up cutting motor and cutting main shaft on the main shaft slide, be connected through axis of rotation and drive belt between cutting motor and the cutting main shaft, still install the compression bar that can go up and down on the base case and can remove the movable clamping plate that is close to fixed clamping plate, through compression bar, fixed clamping plate and movable clamping plate realize pressing from both sides the location of work piece tightly, and realize advancing of work piece through feeding mechanism, can effectively avoid the swing of work piece in cutting process, and furthest reduces rocking of cutting main shaft, guarantee the normal clear of cutting operation, improve the cutting quality of work piece, the life of cutter has still been prolonged simultaneously.

Drawings

Fig. 1 is a schematic three-dimensional structure of the present invention;

fig. 2 is a front view of the present invention;

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a top view of FIG. 2;

FIG. 5 is an enlarged view of the cross-sectional view taken along line A-A of FIG. 2;

FIG. 6 is an enlarged view taken along line B-B of FIG. 3;

FIG. 7 is an enlarged view taken along line C-C in FIG. 4;

FIG. 8 is an enlarged view taken along line D-D of FIG. 7;

FIG. 9 is an enlarged view taken along line E-E in FIG. 3;

FIG. 10 is a schematic three-dimensional view of the cutting spindle;

FIG. 11 is a front view of the cutting spindle;

FIG. 12 is an enlarged view taken along line F-F of FIG. 11;

FIG. 13 is an enlarged view taken along line G-G of FIG. 11;

FIG. 14 is an enlarged view taken along line H-H in FIG. 11;

FIG. 15 is an enlarged view taken along line I-I of FIG. 11;

FIG. 16 is a schematic structural view of a vertical split-housing coupling;

figure 17 is a schematic view of a bearing compression nut.

Detailed Description

A cold sawing machine, as shown in fig. 1-4, including base case 24, base case 24 is as the base of integrated device, install crossbeam 25 on base case 24's roof, install the main shaft slide 26 that can lateral shifting and vertical lift on the crossbeam 25, install cutting motor 27 and transmission shaft 28 at main shaft slide 26 upside, main shaft slide 26 downside is installed and is cut main shaft 29, saw bit 30 is installed to the one end of cutting main shaft 29, horizontal and vertical removal through main shaft slide 26 drives saw bit 30 and comes the work piece cutting on the base case 24.

In order to realize stable transmission between the cutting motor 27 and the cutting spindle 29, a first transmission belt 31 is installed between the output shaft of the cutting motor 27 and one end of the transmission shaft 28, and a second transmission belt 32 is installed between the other end of the transmission shaft 28 and the cutting spindle 29, so as to avoid interference of the saw blade 30 with the base box 24 during cutting, a strip-shaped avoiding groove 33 matched with the saw blade 30 is formed on the top plate of the base box 24.

In order to realize the positioning of the workpiece on the base box 24 and avoid the normal cutting action influenced by shaking and the like in the cutting process, lifting oil cylinders 34 are installed on two sides of the base box 24, a horizontally arranged pressing rod 35 is installed between piston rods of the lifting oil cylinders 34, the pressing rod 35 is located on the lower side of the spindle sliding plate 26, and the piston rods of the lifting oil cylinders 34 can contract to drive the pressing rod 35 to press the workpiece on the base box 24.

In order to ensure effective limiting of two sides of a workpiece, a fixed clamping plate 36 and a horizontally arranged clamping oil cylinder 37 are further mounted on a top plate of the base box 24, a movable clamping plate 38 corresponding to the fixed clamping plate 36 is mounted on a piston rod of the clamping oil cylinder 37, and the piston rod of the clamping oil cylinder 37 can drive the movable clamping plate 38 to move close to the fixed clamping plate 36 after extending out, so that clamping limiting of the workpiece is achieved.

To achieve the forward feeding of the workpiece on the base box 24, a feeding mechanism is further installed at the rear side of the base box 24, and the feeding mechanism can feed the material forward between the fixed clamping plate 36, the movable clamping plate 38 and the pressing rod 35.

In order to realize the purpose that the main shaft sliding plate 26 drives the saw blade 30 to perform moving cutting and effectively control the moving precision of the saw blade 30, a transverse moving mechanism and a vertical moving mechanism are installed between the cross beam 25 and the main shaft sliding plate 26, as shown in fig. 5, the transverse moving mechanism comprises a transverse sliding rail 39 and a transverse moving motor 40 which are arranged on the cross beam 25, a transverse moving sliding plate 41 capable of moving transversely is installed on the transverse sliding rail 39, a transverse moving lead screw 42 is installed on an output shaft of the transverse moving motor 40, a transverse moving sliding block 43 matched with the transverse sliding rail 39 and a transverse moving screw nut 44 matched with the transverse moving lead screw 42 are installed on the transverse moving sliding plate 41, and the transverse moving sliding plate 41 and the main shaft sliding plate 26 thereon are capable of moving transversely when the transverse moving motor 40 is started.

As shown in fig. 6, the vertical moving structure includes a vertical slide rail 45 and a vertical moving motor 46 which are arranged on the traverse slide plate 41, a vertical moving screw 47 is installed on an output shaft of the vertical moving motor 46, a vertical slide block 70 which is matched with the vertical slide rail 45 and a vertical moving screw 48 which is matched with the vertical moving screw 47 are installed on the spindle slide plate 26, and the vertical moving motor 46 is started to drive the spindle slide plate 26 to move vertically.

Further, in order to adjust the relative initial distance between the movable clamping plate 38 and the fixed clamping plate 36 according to different width types of workpieces, the clamping cylinder 37 is mounted on an adjusting seat 49, as shown in fig. 7 and 8, two adjusting chutes 50 are formed in the top plate of the base box 24 and arranged side by side, an adjusting slider 51 matched with the adjusting chutes 50 is arranged at the bottom of the adjusting seat 49, and the adjusting seat 49 and the clamping cylinder 37 thereon can move along the length direction of the adjusting chutes 50.

In order to realize the limiting of the adjusting seat 49 in the length direction of the adjusting sliding grooves 50, a slot plate is further arranged between the two adjusting sliding grooves 50, a plurality of slot blocks 52 which are uniformly arranged at intervals are arranged on the slot plate, the top surface of each slot block 52 is a horizontal plane, one side surface of each slot block 52 is an inclined plane, the side surface of the other side of each slot block 52 is a straight surface, a limiting block 54 which can rotate is installed in the adjusting seat 49 through an adjusting rotating shaft 53, the limiting block 54 can rotate to be attached to the inclined plane, the limiting block 54 is convenient to be limited between the two slot blocks 52 at the moment, and the distance between the adjusting seat 49 and the fixed clamping plate 36 can be changed when the limiting block 54 is located between different slot blocks 52. If the adjusting seat 49 is desired to be adjusted, only the adjusting shaft 53 needs to be rotated to rotate the limiting block 54 to the horizontal state, the slot blocks 52 will not interfere, the position of the adjusting seat 49 can be freely adjusted, and the adjusting shaft 53 can be rotated after the adjustment is completed, so that the limiting block 54 is located between the two slot blocks 52.

In order to realize accurate feeding to the base box 24, as shown in fig. 3 and fig. 9, the feeding mechanism includes a feeding lower bed 55 and a feeding upper bed 56 which are arranged up and down, a movable U-shaped feeding drive plate 57 is installed between the feeding lower bed 55 and the feeding upper bed 56, and the U-shaped feeding drive plate 57 can move along the length direction of the feeding beds. The feeding lower bed body 55 is provided with a feeding slide rail 58 and a feeding motor 59, an output shaft of the feeding motor 59 is provided with a feeding lead screw 60, the bottom of the U-shaped feeding drive plate 57 is provided with a feeding slide block 61 matched with the feeding slide rail 58 and a feeding screw nut 62 matched with the feeding lead screw 60, and the feeding motor 59 can be started to drive the U-shaped feeding drive plate 57 to move.

The feeding upper bed body 56 is provided with a plurality of feeding rollers 63 arranged along the length direction, and the feeding rollers 63 are used for bearing workpieces and converting sliding friction during feeding into rolling friction. In order to realize clamping and feeding of a workpiece, a rear tail fixing clamp 64 is installed at one end of the U-shaped feeding driving plate 57, a horizontally arranged rear tail clamping cylinder 65 is installed at the other end of the U-shaped feeding driving plate 57, a rear tail clamping plate 66 matched with the rear tail fixing clamp 64 is installed on a piston rod of the rear tail clamping cylinder 65, the rear tail clamping plate 66 is located at the upper position of the feeding roller 63, and the rear tail clamping cylinder 65 can drive the rear tail clamping plate 66 to move close to the rear tail fixing clamp 64 when being started, so that clamping of the workpiece is realized.

In order to ensure the stability of the rear clamping plate 66 when moving relative to the rear fixing clamp 64 and avoid the situation of deviation, a horizontally arranged rear guide plate 67 is further installed on the rear fixing clamp 64, a guide slide rail 68 is installed at the bottom of the rear guide plate 67, and a guide slide block 69 matched with the guide slide rail 68 is installed at the top of the rear clamping plate 66.

When the feeding mechanism feeds a workpiece, the workpiece is positioned on the feeding roller 63, a piston rod of the rear tail clamping cylinder 65 extends out, the rear tail clamping plate 66 moves towards the rear tail fixing clamp 64 to clamp the workpiece, then the feeding motor 59 is started to drive the U-shaped feeding driving plate 57 to move towards the base box 24, namely the workpiece is driven to feed forwards, after the workpiece is fed in place, the piston rod of the rear tail clamping cylinder 65 contracts to release the clamping of the rear end of the workpiece, and the feeding motor 59 rotates reversely to enable the U-shaped feeding driving plate 57 to move and reset so as to feed the next workpiece.

As shown in fig. 10 and 11, the cutting spindle 29 includes a spindle housing 1 fixedly disposed on the spindle sliding plate 26, a rotatable spindle rod 2 is installed in the spindle housing 1 in a matching manner, a first bearing cover 3 is installed at the front end of the spindle housing 1 in a matching manner, a second bearing cover 4 is installed at the rear end of the spindle housing 1 in a matching manner, the first bearing cover 3 and the second bearing cover 4 can limit a bearing between the spindle housing 1 and the spindle rod 2, and meanwhile, two ends of the spindle rod 2 can respectively penetrate through the first bearing cover 3 and the second bearing cover 4.

As shown in fig. 12, a first thread 5 is provided on one end of the spindle rod 2 penetrating through the first bearing cover 3, a gland nut 6 is fittingly installed on the first thread 5, and the gland nut 6 can rotate on the spindle rod 2 along the first thread 5. Fix on the main shaft pole 2 between first screw thread 5 and the first bearing cap 3 and set up saw bit mount pad 7, saw bit mount pad 7 and main shaft pole 2 integrated into one piece, the cover is equipped with saw bit gland 8 on the main shaft pole 2 between saw bit mount pad 7 and the gland nut 6, rotates gland nut 6 and can promote saw bit gland 8 and move near to saw bit mount pad 7 to it is fixed to realize the installation of saw bit 30 between mount pad 7 and saw bit gland 8. The main shaft after the saw blade is installed has higher strength, and larger partial torsion can be overcome.

In order to avoid the eccentric torsion of the main shaft rod 2 in the rotation process, a first limiting groove 9 is formed in the front end of the main shaft shell 1, and a front end bearing is installed in the first limiting groove 9 in a matched mode.

In order to realize the accurate limiting of the axial position of the front end bearing in the main shaft shell 1 and enable the front end bearing to penetrate into the main shaft rod 2 from the rear end for installation, a limiting clamping groove 11 is formed in the main shaft rod 2 in the main shaft shell 1, a vertical clamping shell coupling 12 is installed on the limiting clamping groove 11 in a matched mode, the vertical clamping shell coupling 12 is in contact with the inner ring of the front end bearing, and a first limiting groove 9 is in contact with the outer ring of the front end bearing.

The first bearing cover 3 is in contact with the outer ring of the front end bearing, a second thread 13 is arranged on the spindle rod 2 between the front end bearing and the saw blade mounting seat 7, a bearing compression nut 14 is installed on the second thread 13 in a matched mode, and the bearing compression nut 14 can rotate to be in contact with the inner ring of the front end bearing. The first limiting groove 9, the vertical type clamping shell coupling 12, the first bearing cover 3 and the bearing compression nut 14 form axial and radial limiting on the front end bearing, and can reduce the eccentric torque generated when the main shaft rod 2 rotates to the maximum extent.

In order to realize the power input of the spindle shaft 2, as shown in fig. 13, a key slot 15 is formed on one end of the spindle shaft 2, which penetrates through the second bearing cover 4, and the key slot can be connected with a power input shaft with a connecting key to provide power for the rotation of the spindle shaft 2. To ensure the rotation of the rear end of the spindle shaft 2 within the spindle housing 1, a rear end bearing 16 is fitted between the spindle housing 1 and the spindle shaft 2 at a position close to the second bearing cover 4.

Further, the front end bearing is two symmetrically arranged angular contact ball bearings 10 which are installed in a first limiting groove 9 in a matched mode, the two angular contact ball bearings 10 are installed back to back, the wide faces of the outer rings of the angular contact ball bearings 10 are opposite, the narrow faces of the inner rings are opposite, the vertical type clamping shell coupling 12 is in contact with the inner rings of the inner side angular contact ball bearings 10, the first bearing cover 3 is in contact with the outer rings of the outer side angular contact ball bearings 10, the bearing compression nuts 14 can rotate to be in contact with the inner rings of the outer side angular contact ball bearings 10, and the first limiting groove 9, the vertical type clamping shell coupling 12, the first bearing cover 3 and the bearing compression nuts 14 limit the two angular contact ball bearings 10. The angular contact ball bearing 10 with the structure can simultaneously bear radial load and axial load between the main shaft rod 2 and the main shaft rod, and the larger the contact angle is, the higher the axial bearing capacity is, and the angular contact ball bearing can work at a higher rotating speed.

Further, the front end bearing is a cylindrical crossed roller bearing, and the cylindrical crossed roller bearing can be independently installed and can also be installed in a matching mode for bearing larger load.

Further, in order to realize the fixed mounting of the arc piece between the saw blade mounting seat 7 and the saw blade gland 8, as shown in fig. 14, the saw blade mounting seat 7 is provided with a thread counter bore 17 arranged circumferentially, the saw blade gland 8 is provided with a counter bore 23 matched with the thread counter bore 17, the thread counter bore 17 and the counter bore 23 are internally provided with a connecting bolt 18 in a matching manner, the connection between the saw blade mounting seat 7 and the saw blade gland 8 is fixed through the connecting bolt 18, the connecting bolt 18 can be installed in a limited manner, the installation of the saw blade on the spindle rod 2 is more stable, and the saw blade can be conveniently replaced by disassembling and assembling.

Further, in order to ensure the rotational stability of the main shaft 2 during rotation and reduce the possibility of the occurrence of twisting, as shown in fig. 15 and 16, two sets of fastening bolts 19 are installed between the two semi-annular sleeves of the vertical type shell coupling 12, and the structure of the vertical type shell coupling 12 disposed on the limiting clamping groove 11 does not bring the twisting influence on the rotation of the main shaft 2.

Further, in order to facilitate the spindle to be mounted, the rotating bearing compression nut 14 compresses and positions the inner ring of the angular contact ball bearing 10, as shown in fig. 17, a rotating clamping groove 20 is circumferentially arranged on an end surface of the bearing compression nut 14 close to one side of the saw blade mounting seat 7, and due to the fact that the distance between the saw blade mounting seat 7 and the first bearing cover 3 is too short, the rotating clamping groove 20 is arranged to enable a worker to screw the bearing compression nut 14 with the help of a more convenient dismounting tool.

In order to prevent the bearing compression nut 14 from losing the compression limit of the angular contact ball bearing 10 under the action of centrifugal force when the main shaft rod 2 rotates after the angular contact ball bearing 10 is compressed and positioned, the periphery of the bearing compression nut 14 is provided with a screw hole 21 matched with a set screw, the screw hole 21 is positioned on the outer side of the first bearing cover 3, the set screw is arranged in the screw hole 21 to realize the limit of the bearing compression nut 14 on the second thread 13, namely after the compression and positioning of the angular contact ball bearing 10 are completed, the bearing compression nut 14 cannot rotate under the action of external force, and the compression state of the angular contact ball bearing 10 can be always kept.

Further, in order to realize the installation and the limitation of the rear end bearing 16 on the rear end of the main shaft rod 2, the rear end of the main shaft housing 1 is provided with a second limiting groove 22 matched with the rear end bearing 16, and the second bearing cover 4 and the second limiting groove 22 form axial limitation on the rear end bearing 16 so as to facilitate the positioning, the dismounting and the mounting.

The technical solution of the present invention is not limited to the embodiments of the present invention. The technical contents not described in detail in the present invention are all known techniques.

Claims (10)

1. A cold sawing machine is characterized in that: comprises a base box (24), a beam (25) is arranged on a top plate of the base box (24), a main shaft sliding plate (26) which can transversely move and vertically lift is arranged on the beam (25), a cutting motor (27) and a transmission shaft (28) are arranged on the upper side of the main shaft sliding plate (26), a cutting main shaft (29) is arranged on the lower side of the main shaft sliding plate (26), a saw blade (30) is arranged at one end of the cutting main shaft (29), a first transmission belt (31) matched with the saw blade (30) is arranged between an output shaft of the cutting motor (27) and one end of the transmission shaft (28), a second transmission belt (32) matched with the cutting main shaft (29) is arranged between the other end of the transmission shaft (28) and the piston rod of the cutting main shaft (29), a strip avoiding groove (33) matched with the saw blade (30) is arranged on the top plate of the base box (24), lifting oil cylinders (34) are arranged on two sides of the base box (24), a horizontally arranged pressing rod (35) is arranged on the lower side of the main shaft sliding plate (26), a fixed clamping plate (36) and a movable clamping oil cylinder (38) arranged on the side of the base box (24), the feeding mechanism can feed materials forwards between the fixed clamping plate (36), the movable clamping plate (38) and the pressing rod (35).

2. A cold saw machine according to claim 1, wherein: the transverse moving mechanism and the vertical moving structure are installed between the cross beam (25) and the spindle sliding plate (26), the transverse moving mechanism comprises a transverse sliding rail (39) and a transverse moving motor (40) which are arranged on the cross beam (25), the transverse sliding plate (41) capable of transversely moving is installed on the transverse sliding rail (39), a transverse lead screw (42) is installed on an output shaft of the transverse moving motor (40), a transverse sliding block (43) matched with the transverse sliding rail (39) and a transverse screw nut (44) matched with the transverse lead screw (42) are installed on the transverse sliding plate (41), the vertical moving structure comprises a vertical sliding rail (45) and a vertical moving motor (46) which are arranged on the transverse sliding plate (41), a vertical moving lead screw (47) is installed on an output shaft of the vertical moving motor (46), a vertical sliding block (70) matched with the vertical sliding rail (45) and a vertical moving screw nut (48) matched with the vertical moving lead screw (47) are installed on the spindle sliding plate (26), the transverse moving motor (40) can drive the spindle (26) to transversely move, and the vertical moving motor (46) can drive the spindle sliding plate (26) to move.

3. A cold saw machine according to claim 1, wherein: the clamping oil cylinder (37) is installed on the adjusting seat (49), two adjusting sliding grooves (50) which are arranged side by side are formed in a top plate of the base box (24), adjusting sliding blocks (51) matched with the adjusting sliding grooves (50) are arranged at the bottom of the adjusting seat (49), a clamping groove plate is further arranged between the two adjusting sliding grooves (50), a plurality of clamping groove blocks (52) which are arranged at uniform intervals are arranged on the clamping groove plate, the top surface of each clamping groove block (52) is a horizontal plane, one side face of each clamping groove block (52) is an inclined plane, a limiting block (54) capable of rotating is installed in the adjusting seat (49) through an adjusting rotating shaft (53), the limiting block (54) can rotate to be attached to the inclined plane, and the distance between the adjusting seat (49) and the fixed clamping plate (36) can be changed when the limiting block (54) is located between different clamping groove blocks (52).

4. A cold saw machine according to claim 1, wherein: the feeding mechanism comprises a feeding lower bed body (55) and a feeding upper bed body (56) which are arranged up and down, a U-shaped feeding driving plate (57) which can move is arranged between the feeding lower bed body (55) and the feeding upper bed body (56), wherein the feeding lower bed body (55) is provided with a feeding slide rail (58) and a feeding motor (59), an output shaft of the feeding motor (59) is provided with a feeding lead screw (60), the bottom of the U-shaped feeding drive plate (57) is provided with a feeding slide block (61) matched with the feeding slide rail (58) and a feeding screw nut (62) matched with the feeding lead screw (60), a plurality of feeding rollers (63) arranged along the length direction are arranged on the feeding upper bed body (56), one end of the U-shaped feeding driving plate (57) is provided with a rear tail fixing clamp (64), the other end of the U-shaped feeding driving plate (57) is provided with a horizontally arranged rear tail clamping cylinder (65), a piston rod of the rear tail clamping cylinder (65) is provided with a rear tail clamping plate (66) matched with the rear tail fixing clamp (64), the rear tail clamping plate (66) is positioned at the upper part of the feeding rollers (63), a rear tail guide plate (67) horizontally arranged is further mounted on the rear tail fixing clamp (64), a guide sliding rail (68) is mounted at the bottom of the rear tail guide plate (67), and a guide sliding block (69) matched with the guide sliding rail (68) is mounted at the top of the rear tail clamping plate (66).

5. A cold saw machine according to claim 1, wherein: the cutting spindle (29) comprises a spindle shell (1) fixedly arranged on a spindle sliding plate (26), a spindle rod (2) capable of rotating is installed in the spindle shell (1) in a matched mode, a first bearing cover (3) is installed at the front end of the spindle shell (1) in a matched mode, a second bearing cover (4) is installed at the rear end of the spindle shell (1) in a matched mode, a first thread (5) is arranged at one end, penetrating out of the first bearing cover (3), of the spindle rod (2), a gland nut (6) is installed on the first thread (5) in a matched mode, a saw blade mounting seat (7) is fixedly arranged on the spindle rod (2) between the first thread (5) and the first bearing cover (3), the saw blade mounting seat (7) and the spindle rod (2) are integrally formed, a saw blade gland (8) is sleeved on the spindle rod (2) between the saw blade mounting seat (7) and the gland nut (6), the gland nut (6) can push the gland (8) to move towards a clamping groove mounting seat (7) to be close to the spindle rod, a first limiting groove (9) is formed in the front end of the spindle shell (1), a limiting groove (11) is installed on a vertical shaft coupling, and a limiting groove (11) is installed on the spindle shell (11) in a limiting groove (11) in a vertical shaft coupling is installed on the spindle shell, vertical double-layered shell shaft coupling (12) contacts with the inner circle of front end bearing, first bearing cover (3) contacts with the outer lane of front end bearing, be equipped with second screw thread (13) on spindle rod (2) between front end bearing and saw bit mount pad (7), bearing gland nut (14) are installed in the cooperation on second screw thread (13), bearing gland nut (14) can rotate to contact with the inner circle of front end bearing, above-mentioned first spacing groove (9), vertical double-layered shell shaft coupling (12), first bearing cover (3) and bearing gland nut (14) form spacingly to front end bearing, spindle rod (2) are worn out one of second bearing cover (4) and are served and have been seted up keyway (15), cooperation is installed rear end bearing (16) between spindle housing (1) and spindle rod (2) near second bearing cover (4) position department.

6. A cold saw machine according to claim 5, wherein: the front end bearing is two symmetrically-arranged angular contact ball bearings (10) which are installed in a first limiting groove (9) in a matched mode, the two angular contact ball bearings (10) are installed back to back, the wide faces of the outer rings of the angular contact ball bearings (10) are opposite, the narrow faces of the inner rings are opposite, the vertical type clamping shell coupling (12) is in contact with the inner rings of the inner side angular contact ball bearings (10), the first bearing cover (3) is in contact with the outer rings of the outer side angular contact ball bearings (10), the bearing compression nut (14) can rotate to be in contact with the inner rings of the outer side angular contact ball bearings (10), and the first limiting groove (9), the vertical type clamping shell coupling (12), the first bearing cover (3) and the bearing compression nut (14) limit the two angular contact ball bearings (10).

7. A cold saw machine according to claim 5, wherein: the front end bearing is a cylindrical cross roller bearing.

8. A cold saw machine according to claim 5, wherein: the saw blade mounting seat (7) is provided with a thread counter bore (17) which is circumferentially arranged, the saw blade gland (8) is provided with a sink groove (23) corresponding to the thread counter bore (17), and the thread counter bore (17) and the sink groove (23) are internally provided with connecting bolts (18) in a matched manner.

9. A cold saw machine according to claim 5, wherein: two groups of fastening bolts (19) which are rotationally symmetrical are arranged between the two semi-annular sleeves of the vertical type clamping shell coupling (12).

10. A cold saw machine according to claim 5, wherein: the end face, close to one side of the saw blade mounting seat (7), of the bearing compression nut (14) is provided with a rotating clamping groove (20) which is circumferentially arranged, the periphery of the bearing compression nut (14) is provided with a screw hole (21) matched with a set screw, and the screw hole (21) is located on the outer side of the first bearing cover (3).

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