CN211389541U

CN211389541U - Lower sword auxiliary device of triaxial bridge cutter

Info

Publication number: CN211389541U
Application number: CN201921931071.8U
Authority: CN
Inventors: 黄争鸣
Original assignee: Wuhan Jincheng Ruida Stone Co ltd
Current assignee: Wuhan Jincheng Ruida Stone Co ltd
Priority date: 2019-11-09
Filing date: 2019-11-09
Publication date: 2020-09-01
Anticipated expiration: 2029-11-09

Abstract

The utility model discloses a lower sword auxiliary device of triaxial bridge cutting machine, relate to stone material processing equipment auxiliary device's technical field, it includes locating plate and the reference column of horizontal rigid coupling on bridge cutting machine removal seat of vertical rigid coupling on the bridge cutting machine lift knife rest, run through the spout of seting up with reference column grafting adaptation on the locating plate face, the spout sets up along vertical direction, locating plate one side goes up and down to be provided with a plurality of installation pieces, the horizontal pole that accepts the reference column is worn to be equipped with to the installation piece is improved level, be provided with on the installation piece and stir the toggle mechanism that the horizontal pole was kept away from/is close to the spout, be provided with the fixed establishment of fixed mounting piece on the locating. The utility model discloses a thereby a plurality of crossbars that set up on the installation piece of different positions stop the quick repeated tool setting that realizes the lift knife rest to the reference column.

Description

Lower sword auxiliary device of triaxial bridge cutter

Technical Field

The utility model belongs to the technical field of the technique of stone material processing equipment auxiliary device and specifically relates to a lower sword auxiliary device of triaxial bridge cutter is related to.

Background

The stone is widely applied to indoor and outdoor decoration design, curtain wall decoration and public facility construction as a high-grade building decoration material, common stones in the market at present are mainly divided into natural stones and artificial stones, and a bridge cutting machine is generally used for cutting large stones into standard sizes in stone processing. The specific heat capacity of the stone is large, and when the stone is installed outdoors as a dry-hanging stone, the stone is very easily affected by expansion with heat and contraction with cold so that the keel deforms and the stone horizontally sinks, so that a glue joint can be cut on the back of the stone when the stone is processed, and a metal strip and a structural adhesive are filled in the glue joint.

The common equipment in stone processing is a bridge cutting machine which mainly comprises two side beams, a cross beam erected on the two side beams along a longitudinal moving mode, a moving seat arranged on the cross beam along a transverse moving mode, a lifting frame arranged on the moving seat along a vertical moving mode, a tool rest arranged at the lower end of the lifting frame and a stone workbench arranged below the tool rest. When the bridge type stone cutting machine is used for cutting stone materials, generally, manual typesetting is performed, and then stone materials are processed by controlling the knife rest to move along the typesetting track.

Chinese patent with patent publication No. CN202943759U, proposes a high-efficiency full-automatic bridge cutting machine, which comprises a base, a beam, a tool rest assembly, a transverse driving motor for driving the tool rest assembly to move transversely on the beam, a longitudinal driving motor for driving the beam to move longitudinally, a longitudinal guide rail support and a workbench, wherein the longitudinal guide rail support is located between the beam and the base, and the workbench is located below the tool rest assembly; the table has a gantry and at least two movable tables that are movable on the gantry to align the carriage assemblies, respectively, with a wood table top disposed on each movable table. The utility model discloses a realize circulating operation, let full-automatic bridge cutting machine's knife rest assembly be in operating condition always, improved whole bridge cutting machine's work efficiency greatly.

The above prior art solutions have the following drawbacks: when processing the dry hanging stone, the range that the lifting knife rest descends when grooving the front and back of the stone is opened with the glue groove is different, and when processing in batches the stone on a bridge cutting machine, the position of the lifting knife rest needs to be frequently adjusted to complete the tool setting action, and when the lifting mode of the lifting knife rest of a common bridge cutting machine is mostly mechanical, the manual tool setting efficiency is low and the production efficiency is difficult to improve.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a lower sword auxiliary device of triaxial bridge cutter that can relapse the tool setting fast.

The utility model aims at realizing through the following technical scheme:

the utility model provides a lower sword auxiliary device of triaxial bridge cutting machine, includes locating plate and the reference column of horizontal rigid coupling on bridge cutting machine lift knife rest of vertical rigid coupling on bridge cutting machine removes the seat, run through on the locating plate face set up with the spout of reference column grafting adaptation, the spout sets up along vertical direction, locating plate one side goes up and down to be provided with a plurality of installation pieces, the installation piece is improved level and is worn to be equipped with right the horizontal pole that the reference column was accepted, be provided with on the installation piece and stir the horizontal pole is kept away from/is close to the toggle mechanism of spout, be provided with on the installation piece fixedly the installation piece in fixed establishment on the locating plate.

By adopting the technical scheme, the positioning column is horizontally and fixedly connected to the side wall of the lifting tool rest of the bridge cutting machine, the positioning plate is vertically and fixedly connected to the side wall, close to the positioning column, of the moving seat of the bridge cutting machine, the positioning column slides in the chute on the positioning plate, the mounting blocks slide to corresponding positions according to the displacement of the lifting tool rest needing to be lowered when different groove lines are cut on the front side and the back side of the stone, the mounting blocks are fixed through the fixing mechanism, the shifting mechanism on the mounting blocks above stirs the cross rod to cross the chute, and therefore the positioning column is driven to move downwards in the chute and be blocked by the cross rod when the lifting tool rest descends for the first time, and therefore shallow slot cutting; after the shallow slot cutting is accomplished, the stone material overturns, toggle mechanism on the installation piece through the top makes the horizontal pole keep away from the spout, thereby the lift knife rest continues to descend, until with the horizontal pole butt of below, can directly carry out the grooving to the stone material another side this moment, make the bridging machine when cutting the groove line of the different degree of depth to the two sides of stone material of same batch, can realize quick tool setting, the action of all needing repeated tool setting after the stone material upset at every turn has been saved, work efficiency is showing and has been improved, be applicable to the bridging machine of pure mechanical over-and-under type, and lower sword auxiliary device simple structure, and is suitable for.

Further setting the following steps: the fixing mechanism comprises a first T-shaped groove formed in the surface of the positioning plate in the length direction, a first sliding block is connected to the first T-shaped groove in a sliding mode, a fixing bolt with one end abutted against the bottom wall of the first T-shaped groove penetrates through the upper thread of the first sliding block, and the first sliding block protrudes out of the end portion of the surface of the positioning plate.

Through adopting above-mentioned technical scheme, when adjusting the position of installation piece on the locating plate, at the first slider that slides in T type inslot, the installation piece location back, thereby rotatory fixing bolt makes fixing bolt's tip and the diapire butt in first T type groove fix first slider in first T type inslot for the installation piece is fixed on the locating plate, and the horizontal pole can effectively accept the reference column after the installation piece roll-off, thereby is convenient for the convenient tool setting of saw bit in the lifting knife rest.

Further setting the following steps: toggle mechanism includes the rigid coupling and is in the horizontal pole is close to the pull ring of first T type groove one end, the pull ring with elastic component is connected with elastically between the installation piece, elastic component one end with pull ring rigid coupling, the other end with installation piece rigid coupling, run through on the installation piece set up with the perforation of horizontal pole adaptation that slides, be provided with the locking subassembly on the horizontal pole, work as the horizontal pole slides and moves to its tip and be located the spout with during between the installation piece, the locking subassembly is right the horizontal pole locks.

Through adopting above-mentioned technical scheme, when needing to remove blockking of horizontal pole to the reference column that slides in the spout, pulling pull ring makes the horizontal pole keep away from the spout, and the elastic component is compressed and is produced deformation, and when the horizontal pole tip was located between spout and the installation piece, the locking subassembly was locked the horizontal pole, makes it can't stretch into in the spout and blocks the reference column to the reference column can cross this horizontal pole and the horizontal pole butt of below and carry out the secondary tool setting of lift knife rest.

Further setting the following steps: the locking assembly comprises a convex strip fixedly connected to the side wall of the cross rod, a through groove matched with the sliding of the convex strip is formed in the side wall of the mounting block, and the through groove is communicated with the through hole.

By adopting the technical scheme, after the pull ring is pulled to enable the cross rod to be far away from the sliding groove, the convex strip slides in the through groove and passes through the end part of the mounting block far away from the sliding groove, the elastic piece is stretched to generate deformation, then the cross rod is rotated to enable the convex strip to be in contact with the end part of the mounting block far away from the through groove, and the convex strip is tightly abutted against the end part of the mounting block under the pushing of the deformation force of the elastic piece, so that the cross rod is fixed; when the positioning column is required to be blocked, the raised bars are aligned to the through grooves by rotating the cross rods, the cross rods slide in the through holes under the pushing of the deformation force of the elastic piece, finally the cross rods cross the sliding grooves and block the positioning column to realize repeated quick tool setting.

Further setting the following steps: one side of the mounting block, which is close to the pull ring, is provided with an embedded groove matched with the convex strip in an inserted mode.

Through adopting above-mentioned technical scheme, the sand grip slides through logical groove after, and rotatory horizontal pole makes the sand grip support tightly in the caulking groove, can prevent effectively that the horizontal pole from twisting back and being twisted round the influence gyration that the elastic component twistd reverse the deformation power and cause the sand grip to retract to logical groove and influence the effective locking of locking Assembly to the horizontal pole.

Further setting the following steps: one side of the positioning plate, which is far away from the fixing mechanism, is provided with a second T-shaped groove which is arranged along the length direction of the positioning plate, a second sliding block is connected in the second T-shaped groove in a sliding manner, a positioning bolt is arranged on the second sliding block in a threaded manner, one end of the positioning bolt is abutted against the bottom wall of the second T-shaped groove, and an auxiliary piece for bearing the end part of the cross rod is arranged on the second sliding block.

By adopting the technical scheme, after the position of the mounting block is adjusted, the second sliding block slides in the second T-shaped groove until the position of the mounting block corresponds to that of the mounting block, the second sliding block is fixed in the second T-shaped groove by the rotary positioning bolt, and the cross rod jointly accepts the mounting block and the auxiliary part and then stops the positioning column, so that the stability and the impact resistance of the cross rod are improved.

Further setting the following steps: the auxiliary part comprises an auxiliary block fixedly connected with the second sliding block and protruding out of the surface of the positioning plate, and a groove matched with the cross rod in an inserted manner is formed in one side, close to the mounting mechanism, of the auxiliary block.

Through adopting above-mentioned technical scheme, the horizontal pole crosses the spout rear end portion and inserts in the recess on the auxiliary block to the horizontal pole stops the reference column under the dual accepting of installation piece and auxiliary block, with the quick tool setting that realizes the lift knife rest, has improved the stability when the horizontal pole stops the reference column, and is more accurate during the tool setting.

To sum up, the utility model discloses a beneficial technological effect does:

1. the lifting of the positioning column in the sliding groove is blocked by arranging at least two groups of cross rods, so that when the bridge cutting machine cuts groove lines with different depths on two sides of the same batch of stone materials, quick tool setting can be realized, the action of repeating tool setting after the stone materials are turned over every time is omitted, the working efficiency is obviously improved, and the bridge cutting machine is suitable for a purely mechanical lifting type bridge cutting machine, and the lower tool auxiliary device is simple in structure and is practical;

2. an elastic part is arranged between the pull ring and the mounting block, so that when the cross rod is required to block the positioning column, the cross rod only needs to be rotated until the raised bar is aligned with the through groove, and the cross rod can automatically bounce into the sliding groove under the action of the deformation force of the elastic part to block the positioning column, so that the automatic unlocking of the locking assembly on the cross rod is realized;

3. the auxiliary block is arranged on the positioning plate, so that the stability and impact resistance of the cross rod are improved, and the lifting knife rest is more accurate in tool setting.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Reference numerals: 1. positioning a plate; 2. a positioning column; 3. a chute; 4. mounting blocks; 5. a cross bar; 6. a first T-shaped groove; 7. a first slider; 8. fixing the bolt; 9. a pull ring; 10. an elastic member; 11. perforating; 12. a convex strip; 13. a through groove; 14. caulking grooves; 16. a second T-shaped groove; 17. a second slider; 18. an auxiliary block; 19. a groove; 20. positioning the bolt; 21. a long groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a lower sword auxiliary device of triaxial bridge cutting machine, including locating plate 1 and the reference column 2 of horizontal rigid coupling on bridge cutting machine lifting knife rest of vertical rigid coupling on bridge cutting machine removal seat, run through the spout 3 of seting up with 2 grafting adaptations of reference column on the 1 face of locating plate, spout 3 sets up along vertical direction, locating plate 1 goes up and down respectively in 3 width direction's of spout both sides and is provided with a plurality of installation pieces 4 and a plurality of auxiliary members, installation piece 4 is improved level and is worn to be equipped with and accepts the horizontal pole 5 that stops to reference column 2, the auxiliary member is kept away from the one end of installation piece 4 to horizontal pole 5 and is accepted.

Referring to fig. 1 and 2, a fixing mechanism for fixing the mounting block 4 on the positioning plate 1 is arranged on the mounting block 4, the fixing mechanism comprises a first T-shaped groove 6 formed in the plate surface of the positioning plate 1 in the length direction, a first sliding block 7 is connected in the first T-shaped groove 6 in a sliding manner, a fixing bolt 8 with one end abutted against the bottom wall of the first T-shaped groove 6 is arranged on the first sliding block 7 in a penetrating manner through a thread, and the mounting block 4 is fixedly connected to the end part, protruding out of the plate surface of the positioning plate 1, of the first sliding block; the auxiliary part comprises an auxiliary block 18 arranged on the surface of one side, close to the cross rod 5, of the positioning plate 1, a groove 19 matched with the cross rod 5 in an inserted manner is formed in one side, close to the mounting block 4, of the auxiliary block 18, a second T-shaped groove 16 arranged along the length direction of the positioning plate 1 is formed in the surface of one side, far away from the mounting block 4, of the positioning plate 1, a second sliding block 17 is connected in the second T-shaped groove 16 in a sliding manner, a positioning bolt 20 with one end abutted against the bottom wall of the second T-shaped groove 16 penetrates through the upper thread of the second sliding block 17, and the auxiliary part is fixedly connected; the bottom walls of the first T-shaped groove 6 and the second T-shaped groove are provided with elongated grooves 21 which are arranged along the length direction of the sliding groove 3 and have arc-shaped cross sections.

The positioning column 2 is horizontally and fixedly connected with the side wall of a lifting tool rest of the bridge cutting machine, the positioning plate 1 is vertically and fixedly connected with the side wall of a moving seat of the bridge cutting machine, which is close to the positioning column 2, so that the lifting tool rest drives the positioning column 2 to lift and slide in a sliding chute 3 when the moving seat rises and falls, a plurality of first sliding blocks 7 and second sliding blocks 17 sequentially slide in a first T-shaped groove 6 and a second T-shaped groove 16 according to the displacement of the lifting tool rest required to fall when different groove lines are cut and separated on the front and back sides of a stone material, after the installation block 4 and the auxiliary block 18 are positioned, the fixing bolt 8 and the positioning bolt 20 are respectively rotated to fix the first sliding blocks 7 and the second sliding blocks 17 in the first T-shaped groove 6 and the second T-shaped groove 16 respectively, so that the installation block 4 and the auxiliary block 18 are fixed on the positioning plate 1, the cross rod 5 is inserted and connected with a, therefore, when the lifting tool rest descends for the first time, the positioning column 2 is driven to move downwards in the sliding groove 3 and is blocked by the cross rod 5, and the shallow cutting groove can be rapidly positioned on one surface of the stone.

After the cutting of stone material one side shallow slot is accomplished, the stone material overturns, take out horizontal pole 5 on the installation piece 4 in top from spout 3, the lift knife rest drives reference column 2 and continues to descend, until with 5 butts of horizontal pole of below, can directly carry out the grooving to the stone material another side this moment, make the bridging machine to the same batch when the groove line of the two-sided cutting different degree of depth of stone material, can realize quick tool setting, the action of all needing repeated tool setting after the stone material upset at every turn has been saved, and is showing and improving work efficiency, be applicable to the bridging machine of pure mechanical over-and-under type, and lower sword auxiliary device simple structure, and is.

After the auxiliary block 18 is arranged, the cross rod 5 blocks the positioning column 2 under the double supporting of the mounting block 4 and the auxiliary block 18, so that the quick tool setting of the lifting tool rest is realized, the stability of the cross rod 5 when blocking the positioning column 2 is improved, and the tool setting is more accurate; when the positioning block and the auxiliary block 18 are fixed through the fixing bolt 8 and the positioning bolt 20, the fixing bolt 8 and the positioning bolt 20 are screwed into the arc-shaped long groove 21, so that the contact area between the fixing bolt 8 and the positioning bolt 20 and the positioning plate 1 is increased, and the mounting block 4 and the auxiliary block 18 can be more stably fixed on the positioning plate 1, so that the mounting block 4 and the auxiliary block 18 are prevented from shifting on the positioning plate 1 due to the impact on the cross rod 5 when the lifting tool rest is lifted, and the positioning deviation of the lifting tool rest is avoided.

Referring to fig. 1 and 2, a shifting mechanism for shifting the cross bar 5 away from/close to the chute 3 is arranged on the mounting block 4, the shifting mechanism comprises a pull ring 9 fixedly connected to one end of the cross bar 5 close to the first T-shaped groove 6, an elastic part 10 is elastically connected between the pull ring 9 and the mounting block 4, one end of the elastic part 10 is fixedly connected to the pull ring 9, the other end of the elastic part is fixedly connected to the mounting block 4, the elastic part 10 is preferably a spring sleeved on the outer peripheral wall of the cross bar 5, and a through hole 11 matched with the cross bar 5 in a sliding manner penetrates; be provided with the locking subassembly on horizontal pole 5, when horizontal pole 5 slided to its tip of keeping away from pull ring 9 and is located between spout 3 and the installation piece 4, the locking subassembly locks horizontal pole 5, the locking subassembly includes that the rigid coupling keeps away from sand grip 12 on the lateral wall of fixed plate one side at horizontal pole 5, sand grip 12 sets up along 5 axial of horizontal pole, install piece 4 and offer on the lateral wall of locating plate 1 and slide logical groove 13 with sand grip 12, lead to groove 13 and perforation 11 intercommunication and set up along 5 axial of horizontal pole, one side that installation piece 4 is close to pull ring 9 is offered and is inserted caulking groove 14 of adaptation with sand grip 12, caulking groove 14 is close to logical groove 13.

When the blocking of the cross rod 5 to the positioning column 2 sliding in the sliding groove 3 needs to be removed, the pull ring 9 is pulled to enable the cross rod 5 to be far away from the sliding groove 3, the elastic piece 10 is compressed to generate deformation, when the end part of the cross rod 5 is located between the sliding groove 3 and the mounting block 4, the cross rod 5 is rotated to enable the convex strip 12 to be aligned with the embedded groove 14, the convex strip 12 is tightly abutted against the embedded groove 14 under the pushing of the deformation force of the elastic piece 10 to be gathered, so that the cross rod 5 is locked, meanwhile, the situation that the rotary motion of the cross rod 5 after being twisted under the influence of the torsional deformation force of the elastic piece 10 causes the convex strip 12 to be retracted into the through groove 13 to influence the effective locking of the locking component to the cross rod 5 can be effectively prevented; when needing horizontal pole 5 to block reference column 2 and be convenient for repeat tool setting, sand grip 12 breaks away from the plug-in connection with caulking groove 14 when pulling pull ring 9 earlier, rotatory horizontal pole 5 again makes sand grip 12 aim at logical groove 13, horizontal pole 5 slides in perforation 11 under the promotion of elastic component 10 deformation power, finally horizontal pole 5 crosses spout 3 and the recess 19 plug-in connection on the supplementary piece 18, and block reference column 2 in order to realize repeated quick tool setting, installation piece 4 and supplementary piece 18 set up a plurality of quick repetition tool settings that can realize a plurality of fixed points.

The implementation principle and the beneficial effects of the embodiment are as follows:

horizontally and fixedly connecting a positioning column 2 to the side wall of a lifting tool rest of a bridge cutting machine, vertically and fixedly connecting a positioning plate 1 to the side wall of a moving seat of the bridge cutting machine close to the positioning column 2, enabling the positioning column 2 to slide in a sliding groove 3 on the positioning plate 1, sliding a plurality of mounting blocks 4 to corresponding positions according to the displacement of the lifting tool rest required to descend when different groove lines are cut on the front and back sides of a stone, fixing the mounting blocks 4 through a fixing mechanism, enabling a shifting mechanism on the upper mounting block 4 to shift a cross rod 5 to cross the sliding groove 3, and driving the positioning column 2 to move downwards in the sliding groove 3 and be blocked by the cross rod 5 when the lifting tool rest descends for the first time, so that shallow cutting can be carried out on; after the shallow slot cutting is accomplished, the stone material overturns, toggle mechanism on the installation piece 4 through the top makes horizontal pole 5 keep away from spout 3, thereby the lift knife rest continues to descend, until 5 butts with the horizontal pole of below, can directly carry out the grooving to the stone material another side this moment, make the bridging machine to the same batch when the groove line of the two-sided cutting different degree of depth of stone material, can realize quick tool setting, the action of all needing repeated tool setting after the stone material upset at every turn has been saved, the work efficiency is showing and has been improved, be applicable to the bridging machine of pure mechanical over-and-under type, and lower sword auxiliary device simple structure, and is suitable for.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a lower sword auxiliary device of triaxial bridge cutter which characterized in that: including locating plate (1) and reference column (2) of horizontal rigid coupling on bridge cutting machine lifting knife rest of vertical rigid coupling on bridge cutting machine removes the seat, run through on locating plate (1) face seted up with spout (3) of reference column (2) grafting adaptation, spout (3) set up along vertical direction, locating plate (1) one side goes up and down to be provided with a plurality of installation pieces (4), installation piece (4) are improved level and are worn to be equipped with right horizontal pole (5) that reference column (2) were accepted, be provided with on installation piece (4) and stir horizontal pole (5) are kept away from/are close to the toggle mechanism of spout (3), be provided with on installation piece (4) fixedly installation piece (4) in fixed establishment on locating plate (1).

2. The lower knife auxiliary device of the three-axis bridge cutting machine according to claim 1, characterized in that: fixing mechanism is including seting up first T type groove (6) of locating plate (1) length direction face, the internal slipping of first T type groove (6) is connected with first slider (7), screw thread wear to be equipped with one end and fixing bolt (8) of first T type groove (6) diapire butt on first slider (7), installation piece (4) rigid coupling is in first slider (7) salient in the tip of locating plate (1) face.

3. The lower knife auxiliary device of the three-axis bridge cutting machine according to claim 2, characterized in that: toggle mechanism includes the rigid coupling and is in horizontal pole (5) are close to pull ring (9) of first T type groove (6) one end, pull ring (9) with elastic component (10) of elastic connection between installation piece (4), elastic component (10) one end with pull ring (9) rigid coupling, the other end with installation piece (4) rigid coupling, run through on installation piece (4) set up with perforation (11) of the adaptation that slides of horizontal pole (5), be provided with the locking subassembly on horizontal pole (5), work as horizontal pole (5) slide to its tip and are located spout (3) with during between installation piece (4), the locking subassembly is right horizontal pole (5) are locked.

4. The lower knife auxiliary device of the three-axis bridge cutting machine according to claim 3, characterized in that: locking Assembly includes the rigid coupling and is in sand grip (12) on horizontal pole (5) lateral wall, installation piece (4) lateral wall seted up with logical groove (13) of sand grip (12) adaptation that slides, lead to groove (13) with perforation (11) intercommunication.

5. The lower knife auxiliary device of the three-axis bridge cutting machine according to claim 4, characterized in that: one side of the mounting block (4) close to the pull ring (9) is provided with a caulking groove (14) matched with the convex strip (12) in an inserting way.

6. The lower knife auxiliary device of the three-axis bridge cutting machine according to claim 1, characterized in that: keep away from positioning plate (1) one side of fixed establishment is seted up the edge second T type groove (16) that positioning plate (1) length direction set up, second T type groove (16) internal slipping is connected with second slider (17), the screw thread is worn to be equipped with one end on second slider (17) with positioning bolt (20) of second T type groove (16) diapire butt, be provided with on second slider (17) and be used for accepting the auxiliary member of horizontal pole (5) tip.

7. The lower knife auxiliary device of the three-axis bridge cutting machine according to claim 6, characterized in that: the auxiliary part comprises an auxiliary block (18) fixedly connected to the second sliding block (17) and protruding out of the surface of the positioning plate (1), and a groove (19) matched with the cross rod (5) in an inserting mode is formed in one side, close to the fixing mechanism, of the auxiliary block (18).