Saw and drill combined production line

Abstract

Provided is a sawing and drilling joint production line, comprising a horizontal loading rack and a vertical loading roller, wherein a sawing unit is arranged at the end of the vertical loading roller; a longitudinal intermediate power roller and a horizontal residual material discharge device are arranged at the discharge end of the sawing unit; a longitudinal workbench I and a longitudinal workbench II are arranged at the feeding end of the longitudinal intermediate power roller; one side of the longitudinal workbench I is connected to the horizontal loading rack, and the other side is provided with a drilling unit; the drilling unit comprises a drilling unit bed, a drilling unit column, a drilling unit power head and a coding system; the longitudinal movement stroke of the drilling unit power head along the drilling unit bed is greater than the longitudinal total length of the longitudinal workbench I and the longitudinal workbench II. The present invention realizes the automated production of sawing and drilling of rail parts in alloy steel assembly frogs; and improves the processing accuracy and production efficiency of wing rails, which are important components of alloy steel. Practical, reliable, labor-saving and efficient.

Description

Technical Field

[0001] The invention belongs to the technical field of operation and transportation combined operation mechanical equipment, and specifically relates to a sawing and drilling combined production line. Background Art

[0002] Alloy steel frogs have good properties such as high strength, high wear resistance, and weldability, and the current demand is increasing. The processing of wing rails, an important component of alloy steel, is an important factor affecting the production of alloy steel frogs. The existing processing method of alloy steel frogs and wing rails is sawing with a band sawing machine and then drilling with a drilling machine. The workpiece is transported many times and the processing accuracy is low. In this regard, the following improved technical solutions are proposed. Summary of the invention

[0003] The technical problem solved by the present invention is to provide a sawing and drilling combined production line, which is used to improve the processing accuracy and production efficiency of wing rails, which are important components of alloy steel.

[0004] The technical solution adopted by the present invention: a sawing and drilling combined production line, characterized in that: it includes a horizontal loading rack, which is vertically connected to a longitudinal loading roller; a sawing unit is provided at the longitudinal loading end of the longitudinal loading roller; a longitudinal intermediate power roller is provided at the discharge end of the sawing unit; the longitudinal intermediate power roller is vertically connected to a horizontal residual material discharge device; a longitudinal workbench I is provided at the longitudinal feeding end of the longitudinal intermediate power roller; one side of the longitudinal workbench I is vertically connected to the horizontal unloading rack; the other side of the longitudinal workbench I is provided with a drilling unit; the drilling unit includes a drilling unit bed parallel to the longitudinal workbench I; the drilling unit bed is provided with a drilling unit column; the drilling unit column is installed with a drilling unit power head and a coding system; a longitudinal workbench II is provided in connection with the longitudinal feeding end of the longitudinal workbench I; the longitudinal workbench II is used for manual loading and unloading; the longitudinal moving stroke of the drilling unit power head along the drilling unit bed is greater than the total longitudinal length of the longitudinal workbench I and the longitudinal workbench II.

[0005] In the above technical solution, further: the drilling unit is provided with a drilling unit iron chip box; the sawing unit is provided with a sawing unit iron chip box; and a waste box is provided next to the sawing unit iron chip box.

[0006] In the above technical scheme, further: the drilling unit corresponds to the longitudinal workbench I as the rail processing area; the drilling unit corresponds to the longitudinal workbench II as the heart rail and insert processing area; the longitudinal feeding end of the longitudinal workbench I is provided with a workpiece hard limit structure.

[0007] In the above technical solution, further: the workpiece hard limit structure is a limit plate.

[0008] In the above technical solution, further: the sawing unit is provided with a first laser beam switch; the first laser beam switch is used for detecting the arrival of the rail head; a second laser beam switch is provided on the rear side of the first laser beam switch in the feeding direction; the second laser beam switch is used as the starting point of the rail head to determine the sawing length of the rail.

[0009] In the above technical solution, further: the longitudinal workbench I is provided with a lifting power roller; the lifting end of the lifting power roller is at the same height as the drilling operation height of the drilling unit.

[0010] In the above technical solution, further: the longitudinal workbench I is provided with a pushing mechanism; the pushing mechanism is used to push the rail into the drilling unit.

[0011] In the above technical solution, further: the drilling unit is provided with an electromagnetic suction cup for adsorbing the rail.

[0012] In the above technical scheme, further: a permanent magnetic suction cup and a support seat are provided on the table top of the longitudinal workbench II; a plurality of permanent magnetic suction cups and support seats are arranged at intervals along the length direction of the longitudinal workbench II; a T-slot is provided on the upper end surface of the support seat; the T-slot is used to fix tooling and fixtures to clamp the alloy steel center rail or alloy steel insert.

[0013] In the above technical solution, further: the drilling unit is provided with a chamfering mechanism.

[0014] The advantages of the present invention compared with the prior art are:

[0015] 1. The present invention detects and determines the sawing length of the rail head by two sets of laser beam switches. The detection is accurate, economical and practical, and the automatic sawing detection of the rail length is realized.

[0016] 2. After the rail parts of the present invention arrive at the longitudinal workbench Ⅰ8, the rails are fixed in combination with the electromagnetic suction cup of the drilling unit, and then the drilling operation after sawing is performed; the workpiece fixing is simple, stable, efficient and reliable; the longitudinal workbench Ⅱ9 on the rear side of the longitudinal workbench Ⅰ8 is combined with the electromagnetic suction cup 901 and the support seat 902 for manually clamping and fixing the alloy steel heart rail and the alloy steel insert, and is combined with the drilling unit for automatic drilling operation; the processing accuracy requirements of the wing rail, an important component of the alloy steel, are met, and production efficiency is improved; the clamping is simple, reliable, stable, efficient and convenient.

[0017] 3. When drilling holes, the present invention adopts a magnetic suction method to fix the rails, which is simple, practical, economical, reliable and efficient.

[0018] 4. The longitudinal workbench Ⅰ8 of the present invention is provided with a lifting power roller for lifting the rail to the drilling operation height of the drilling unit, and combined with electromagnetic adsorption fixation to complete the subsequent drilling operation, the drilling operation is automatic, efficient and accurate.

[0019] 5. The longitudinal workbench Ⅰ8 of the present invention is provided with a pushing mechanism, which is used to push the rail on the longitudinal workbench Ⅰ8 close to the workpiece hard limit structure 15, that is, the limit plate, to achieve accurate positioning of the drilling position; the positioning is simple, efficient and reliable, which is conducive to the subsequent accurate drilling operation.

[0020] 6. After the drilling of the rails on the longitudinal workbench I8 of the present invention is completed, the pusher mechanism retreats; the lifting power lowering roller is reset; the electromagnetic suction cup of the sawing unit is demagnetized, and the rails with holes drilled are automatically unloaded by the horizontal unloading rack 7, which is simple, efficient, time-saving and labor-saving.

[0021] 7. The longitudinal workbench II 9 of the present invention realizes manual and automatic loading and unloading of special rail parts; the workpiece is fixed by magnetic attraction combined with clamp fastening; it is highly flexible and can meet the drilling needs of workpieces with special structures, with high freedom and flexibility, simple, practical and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A top view of the present invention;

[0023] Figure 2 It is the front view of the present invention;

[0024] Figure 3 for Figure 1 Schematic diagram of the structure of the middle longitudinal workbench II;

[0025] Figure 4 for Figure 1 Schematic diagram of the structure of the medium drilling unit;

[0026] Figure 5 for Figure 1 Structural schematic diagram of the middle longitudinal intermediate powered roller and the transverse residual material removal device;

[0027] Figure 6 for Figure 2 The structural diagram of the sawing unit;

[0028] In the figure: 1- horizontal loading rack, 2- longitudinal loading roller, 3- sawing unit, 4- longitudinal intermediate power roller, 5- horizontal residual material unloading device, 6- drilling unit bed, 7- horizontal unloading rack, 8- longitudinal workbench Ⅰ, 9- longitudinal workbench Ⅱ, 10- inkjet system, 11- drilling unit power head, 12- drilling unit column, 13- drilling unit iron chip box, 14- heart rail and insert processing area, 15- workpiece hard limit structure, 16- rail processing area, 17- waste box, 18- sawing unit iron chip box, 901- permanent magnetic suction cup, 902- support seat, 9021- T-slot, 301- sawing roller, 302- clamping cylinder. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-6Specific embodiments of the present invention are described.

[0030] The sawing and drilling combined production line comprises an upward material rack 1, a longitudinal material loading roller table 2, a sawing unit 3, an intermediate power roller table 4, a transverse residual material unloading device 5, a longitudinal workbench Ⅰ8, a longitudinal workbench Ⅱ9, a drilling unit, and a transverse material unloading rack 7.

[0031] (like Figure 1 The sawing and drilling combined production line (shown in FIG. 1 ) comprises a transverse loading rack 1, which is vertically connected to a longitudinal loading roller 2. The transverse loading rack 1 is used to transport the rails transversely to the longitudinal loading roller 2. After the rails are transported to the longitudinal loading roller 2, the transverse loading rack 1 stops transporting, and the rails are automatically loaded from the transverse loading rack 1 to the longitudinal loading roller 2. This saves manpower and improves efficiency.

[0032] A sawing unit 3 is provided at the conveying end of the longitudinal feeding roller 2 for longitudinal feeding.

[0033] (like Figure 6 As shown in the figure, the sawing unit 3 comprises two sets of upper and lower sawing rollers 301 symmetrically arranged on the left and right axes; the sawing rollers 301 are used for conveying the rails in an upper and lower clamping manner; the upper and lower sawing rollers 301 are used for clamping the rails in combination with a clamping mechanism, and after clamping the rails, the sawing mechanism is used for sawing the rails to a certain size.

[0034] A longitudinal intermediate powered roller 4 is provided at the discharge end of the sawing unit 3. The longitudinal intermediate powered roller 4 is used to transport the rails in a fixed length so that the sawing unit 3 can saw the rails in a fixed length.

[0035] The longitudinal intermediate power roller 4 is vertically connected to the transverse residual material discharging device 5. The transverse residual material discharging device 5 is used for automatically discharging the residual material of the rail after sawing, saving manpower, being automatic and efficient.

[0036] The longitudinal feeding end of the longitudinal intermediate power roller 4 is provided with a longitudinal workbench Ⅰ8. The longitudinal workbench Ⅰ8 is used for automatically drilling the steel rails after sawing and forming.

[0037] One side of the longitudinal workbench Ⅰ8 is vertically connected to a transverse unloading rack 7; the transverse unloading rack 7 is used to automatically unload the rails after drilling is completed, which saves manpower and is automatic and efficient.

[0038] A drilling unit is provided on the other side of the longitudinal workbench Ⅰ8; the drilling unit is used to prepare for drilling operations on the rails after sawing on the longitudinal workbench Ⅰ8.

[0039] The drilling unit comprises a drilling unit bed 6 parallel to the longitudinal worktable Ⅰ8; the drilling unit bed 6 extends along the length direction of the longitudinal worktable Ⅰ8; and the drilling unit bed 6 provides a moving stroke for the drilling unit power head 11 in the drilling unit.

[0040] That is, the drilling unit bed 6 is provided with a drilling unit column 12; the drilling unit column 12 is used to support and install the drilling unit power head 11 and the inkjet system 10. The drilling unit power head 11 is used to perform automatic drilling operations; the inkjet system 10 is used to perform automatic inkjet operations on rails.

[0041] A longitudinal workbench II 9 is connected to the longitudinal feeding end of the longitudinal workbench I 8. The longitudinal workbench II 9 is used for manual loading and unloading, clamping alloy steel center rails or alloy steel inserts with special structures, and realizing automatic drilling operations of alloy steel center rails or alloy steel inserts.

[0042] On this basis: the longitudinal workbench II 9 is used for manual loading and unloading; the longitudinal movement stroke of the drilling unit power head 11 along the drilling unit bed 6 is greater than the longitudinal total length of the longitudinal workbench I8 and the longitudinal workbench II 9. That is, the drilling unit power head 11 can meet the drilling operation of the steel rail on the long-stroke longitudinal workbench I8, and the automatic drilling operation of the alloy steel center rail or alloy steel insert on the longitudinal workbench II 9.

[0043] (like Figure 2 In the above embodiment, further: the drilling unit is provided with a drilling unit iron scrap box 13; the drilling unit iron scrap box 13 is used to collect iron scraps after drilling to ensure the ground is clean.

[0044] The sawing unit 3 is provided with a sawing unit iron scrap box 18. The sawing unit iron scrap box 18 is used to collect iron scraps from the sawing mechanism to ensure the cleanliness of the ground.

[0045] A waste box 17 is provided beside the sawing unit scrap box 18. The waste box 17 is used to collect some of the waste cut by sawing for convenient recycling.

[0046] In the above embodiment, further: the drilling unit corresponds to the longitudinal workbench Ⅰ8 as a rail processing area 16. This area is used to process the rails that are automatically transmitted by the longitudinal intermediate power roller 4 and are sawed.

[0047] The drilling unit corresponds to the longitudinal workbench II9 as a center rail and insert processing area 14. The center rail and insert processing area 14 is used to perform automatic drilling processing operations on the alloy steel center rail or alloy steel insert manually clamped thereon along the longitudinal workbench II9.

[0048] The longitudinal feeding end of the longitudinal workbench I8 is provided with a workpiece hard stop structure 15. The workpiece hard stop structure 15 is used to separate the longitudinal workbench I8 from the longitudinal workbench II9; and to separate the heart rail and insert processing area 14 from the rail processing area 16.

[0049] In the above embodiment, further: the workpiece hard limit structure 15 is a limit plate, which has a simple structure, reliable limit, economical and practical, accurate, reliable and efficient positioning.

[0050] In the above embodiment, further: the sawing unit 3 is provided with a first laser beam switch; the first laser beam switch is used for detecting the arrival of the rail head. That is, when the rail head blocks the first laser beam switch, the system receives a rail arrival signal. The sawing unit 3 starts the servo mechanism and continues to transport the rail at a fixed length so that the rail passes the sawing unit 3 until the rail is transported to the front side of the second laser beam switch of the sawing unit and stops being transported.

[0051] A second laser beam switch is provided at the rear side of the feeding direction of the first laser beam switch; the second laser beam switch is used as the starting point of the rail head to determine the sawing length of the rail. When the rail is transported to the second laser beam switch and blocks the laser beam of the second laser beam switch, the rail continues to be transported forward by the servo mechanism again, and the servo mechanism transports it according to the set length. After reaching the set length, the servo motor stops transporting, indicating that the rail has passed the sawing point position according to the set length, and the clamping cylinder performs a downward pressing action to clamp the rail; the sawing mechanism starts, and open sawing is performed to complete the fixed-length automatic sawing operation of the rail. The sawed rail continues to be transported forward by the longitudinal intermediate power roller 4 and to the longitudinal workbench Ⅰ8.

[0052] In the above embodiment, further: the longitudinal workbench Ⅰ8 is provided with a lifting power roller; the lifting power roller is used to lift the steel rail after sawing and forming, and stops lifting after lifting the steel rail to the drilling operation height of the drilling unit. The lifting end of the lifting power roller is at the same height as the drilling operation height of the drilling unit, so that the drilling unit can perform drilling operation on the steel rail.

[0053] In the above embodiment, further: the longitudinal workbench Ⅰ8 is provided with a pushing mechanism along its conveying direction and transverse direction respectively; the pushing mechanism is used to push the rail into the electromagnetic suction cup close to the drilling unit, and to push the left end of the rail close to the workpiece hard limiting structure 15, i.e., the limiting plate, of the drilling unit, and complete the automatic positioning operation of the rail in the drilling unit through the pushing mechanism.

[0054] In the above embodiment, further: the drilling unit is provided with an electromagnetic suction cup for adsorbing the rail. The electromagnetic suction cup firmly adsorbs the rail after power is turned on; after power is turned off, the electromagnetic suction cup releases adsorption and is reset by the lifting power roller, completing the automatic unloading operation after drilling.

[0055] In the above embodiment, further: a permanent magnetic chuck 901 and a support seat 902 are provided on the table of the longitudinal workbench II 9. The longitudinal workbench II 9 is located at the rear side of the conveying of the longitudinal workbench I 8 and is colinear with the longitudinal workbench I 8. The longitudinal workbench II 9 is used for manually clamping the alloy steel center rail or alloy steel insert, and the alloy steel center rail or alloy steel insert is automatically drilled by the drilling unit on one side of the longitudinal workbench II 9.

[0056] The said permanent magnetic chuck 901 and the supporting seat 902 provided on the table of the longitudinal workbench II 9 are arranged in multiple intervals along the length direction of the longitudinal workbench II 9 to adsorb and fix the workpiece of sufficient length.

[0057] The upper end surface of the support seat 902 is provided with a T-slot 9021; the T-slot 9021 is used to fix tooling and fixtures to clamp the alloy steel center rail or alloy steel insert.

[0058] In the above embodiment, further: the drilling unit is provided with a chamfering mechanism, and the chamfering mechanism is used for automatic chamfering operation after drilling.

[0059] The working principle of the present invention is as follows: a certain number of rails are placed on the transverse loading rack 1 at a certain interval, and the pushing mechanism on the transverse loading rack 1 transports the rails to the longitudinal loading roller 2, and the longitudinal loading roller 2 is driven to transport the rails forward to the roller feeding position of the sawing unit 3; a first laser beam switch provided at the roller feeding position of the sawing unit 3 detects the rail head, and after detecting the rail head and material head, the rollers of the sawing unit 3 continue to feed, so that the rails pass through the sawing unit 3 smoothly and reach another roller feeding position at the discharge end of the sawing unit 3, and the rollers here continue to perform servo feeding, and after feeding a short distance, the material head is detected by the second laser beam switch, and after detecting the material head, the CNC system uses this as a reference to perform CNC fixed-length feeding, and stops feeding after reaching the fixed-length feeding length, and performs sawing processing in an open manner.

[0060] After sawing is completed, the rail is transported to the longitudinal workbench Ⅰ8 through the longitudinal intermediate power roller 4. When the end of the rail is close to the limit plate at the end of the longitudinal workbench Ⅰ8, the feeding is stopped. The longitudinal workbench Ⅰ8 is provided with a lifting power roller. After the lifting power roller lifts the rail to the working height of the drilling unit, the pushing mechanism provided on the longitudinal workbench Ⅰ8 pushes the rail and pushes the rail into the drilling unit. The electromagnetic suction cup of the drilling unit attracts the rail, and then the drilling process of the rail begins; the drilling unit includes a front chamfering mechanism, which can also perform chamfering operations on the rail after drilling is completed.

[0061] After the drilling and chamfering is completed; the pushing mechanism on the longitudinal workbench Ⅰ8 retreats, the electromagnetic suction cup of the drilling unit is demagnetized, and the horizontal unloading rack 7 moves the rails that have been processed by drilling, chamfering and coding to the waiting area on the horizontal unloading rack 7, and this cycle is repeated until the horizontal unloading rack 7 accumulates a certain number of rails and then performs centralized lifting operations to complete the automatic sawing and drilling and chamfering operations.

[0062] The longitudinal workbench II 9 is used to process the alloy steel center rail and alloy steel insert. The table of the longitudinal workbench II 9 is provided with a permanent magnetic chuck 901 and a support seat 902, and the two are arranged at intervals. The upper end surface of the support seat 902 is provided with a T-slot 9021, which can fix the tooling and fixture, so that the alloy steel center rail and alloy steel insert can be drilled. Among them, the difference is that the alloy steel center rail and alloy steel insert need to be loaded and unloaded manually to meet the positioning requirements of special structures and to drill holes accurately.

[0063] From the above description, it can be found that the present invention detects and determines the sawing length of the rail head by two groups of laser beam switches, the detection is accurate, economical and practical, and the automatic sawing detection of the rail length is realized.

[0064] After the rail member of the present invention reaches the longitudinal workbench Ⅰ8, the rail is fixed in combination with the electromagnetic suction cup of the drilling unit, and then the drilling operation after sawing is performed; the workpiece fixing is simple, stable, efficient and reliable; the longitudinal workbench Ⅱ9 on the rear side of the longitudinal workbench Ⅰ8 is combined with the electromagnetic suction cup 901 and the support seat 902 for manually clamping and fixing the alloy steel heart rail and the alloy steel insert, and is combined with the drilling unit to perform automatic drilling operations; the processing accuracy requirements of the wing rail, an important component of the alloy steel, are met, and production efficiency is improved; the clamping is simple, reliable, stable, efficient and convenient.

[0065] When drilling holes, the present invention adopts a magnetic suction method to fix the rails, which is simple, practical, economical, reliable and efficient.

[0066] The longitudinal workbench Ⅰ8 of the present invention is provided with a lifting power roller for lifting the rail to the drilling operation height of the drilling unit, and combined with electromagnetic adsorption fixation to complete the subsequent drilling operation, the drilling operation is automatic, efficient and accurate.

[0067] The longitudinal workbench Ⅰ8 of the present invention is provided with a pushing mechanism, which is used to push the rail on the longitudinal workbench Ⅰ8 close to the workpiece hard limit structure 15, that is, the limit plate, to achieve accurate positioning of the drilling position; the positioning is simple, efficient and reliable, which helps to carry out subsequent accurate drilling operations.

[0068] After the rail drilling process on the longitudinal workbench I8 station of the present invention is completed, the pusher mechanism retreats; the lifting power descending roller is reset; the electromagnetic suction cup of the sawing unit is demagnetized, and the rail with the drilling completed is automatically unloaded by the horizontal unloading rack 7, which is simple, efficient, time-saving and labor-saving.

[0069] The longitudinal workbench II 9 of the present invention realizes manual automatic loading and unloading of special rail parts; the workpiece is fixed by magnetic attraction combined with clamp fastening; it is highly flexible and can meet the drilling needs of workpieces with special structures, has high freedom and flexibility, and is simple, practical and reliable.

[0070] In summary, the present invention is mainly used for the continuous operation of automatic sawing and automatic drilling of rail parts in alloy steel assembly frogs, as well as the automatic drilling of alloy steel center rails and alloy steel insert holes. The invention realizes the automated production of sawing and drilling of rail parts in alloy steel assembly frogs. The machining accuracy and production efficiency of wing rails, which are important components of alloy steel, are improved. The invention is practical, reliable, labor-saving and efficient.

[0071] It should be understood that although the present specification is described according to one implementation mode, the implementation mode does not include only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in this embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0072] The above preferred embodiments are not intended to limit the scope of implementation of the present invention, so all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention; the components and materials used in the above embodiments are commercially available unless otherwise specified.

Claims

1. Saw and drill combined production line, characterized by: The invention comprises a horizontal loading rack (1), wherein the horizontal loading rack (1) is vertically connected to a vertical loading roller (2); a sawing unit (3) is provided at the vertical loading end of the vertical loading roller (2); a longitudinal intermediate power roller (4) is provided at the discharge end of the sawing unit (3); the longitudinal intermediate power roller (4) is vertically connected to a horizontal residual material discharge device (5); a longitudinal workbench I (8) is provided at the vertical feeding end of the longitudinal intermediate power roller (4); one side of the longitudinal workbench I (8) is vertically connected to a horizontal unloading rack (7); the other side of the longitudinal workbench I (8) is provided with a drilling unit; the drilling unit The hole unit comprises a drilling unit bed (6) parallel to the longitudinal worktable I (8); the drilling unit bed (6) is provided with a drilling unit column (12); the drilling unit column (12) is installed with a drilling unit power head (11) and a coding system (10); a longitudinal worktable II (9) is connected to the longitudinal feeding end of the longitudinal worktable I (8); the longitudinal worktable II (9) is used for manual loading and unloading; the longitudinal movement stroke of the drilling unit power head (11) along the drilling unit bed (6) is greater than the longitudinal total length of the longitudinal worktable I (8) and the longitudinal worktable II (9); The drilling unit is provided with a drilling unit iron chip box (13); the sawing unit (3) is provided with a sawing unit iron chip box (18); a waste box (17) is provided next to the sawing unit iron chip box (18); The drilling unit corresponds to the longitudinal workbench I (8) as a rail processing area (16); the drilling unit corresponds to the longitudinal workbench II (9) as a center rail and insert processing area (14); and a workpiece hard limit structure (15) is provided at the longitudinal feeding end of the longitudinal workbench I (8).

2. The saw-drill combined production line according to claim 1, characterized in that: The workpiece hard limiting structure (15) is a limiting plate.

3. The saw-drill combined production line according to claim 1, characterized in that: The sawing unit (3) is provided with a first laser beam switch; the first laser beam switch is used for detecting the arrival of the rail head; a second laser beam switch is provided on the rear side of the first laser beam switch in the feeding direction; the second laser beam switch is used as the starting point of the rail head and is used to determine the sawing length of the rail.

4. The saw-drill combined production line according to claim 1, characterized in that: The longitudinal workbench Ⅰ (8) is provided with a lifting power roller; the lifting end of the lifting power roller is at the same height as the drilling operation height of the drilling unit.

5. The saw-drill combined production line according to claim 1, characterized in that: The longitudinal workbench I (8) is provided with a pushing mechanism; the pushing mechanism is used to push the rail into the drilling unit.

6. The saw-drill combined production line according to claim 1, characterized in that: The drilling unit is provided with an electromagnetic sucker for adsorbing the rail.

7. The saw-drill combined production line according to claim 1, characterized in that: A permanent magnetic chuck (901) and a support seat (902) are provided on the table top of the longitudinal workbench II (9); a plurality of the permanent magnetic chuck (901) and the support seat (902) are arranged at intervals along the length direction of the longitudinal workbench II (9); a T-shaped groove (9021) is provided on the upper end surface of the support seat (902); the T-shaped groove (9021) is used to fix tooling and fixtures to clamp the alloy steel center rail or alloy steel insert.

8. The saw-drill combined production line according to claim 1, characterized in that: The drilling unit is provided with a chamfering mechanism.

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