Sawing machine tool capable of being rapidly assembled and disassembled and machining method

Abstract

The invention provides a quick assembling and disassembling sawing machine tool and a machining method. The tool comprises a positioning bottom plate, a left angle support, a right angle support, a mandrel, a locking clamping base, a positioning baffle and an adjusting jackscrew. The whole tool is fixed to a sawing machine workbench, and the notch position of the workpiece is adjusted to coincide with the longitudinal cutting position of a saw blade. According to the sawing machine tool, no tool is used, the workpiece assembling and disassembling efficiency is high, multiple products can be fixed at a time and can be sawed and machined at the same time, the clamping frequency is reduced, the machining efficiency is improved, and the manufacturing cost is greatly reduced on the basis that the product quality is guaranteed. Accurate positioning of sawing machining can be achieved, numerical control milling machine machining is replaced, then the clamping beat is reduced, the labor intensity of an operator is reduced, and the yield per unit time is increased.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical manufacturing, and in particular relates to a fast-loading and unloading sawing machine tool and a processing method. Background Art

[0002] The guide tooth cover is an important component in the movement system of tracked special vehicles. It is located in the middle of each section of the track. It is fastened to the guide tooth through connecting parts, and plays the role of fixing the track pin and improving the rigidity of the track pin. After assembly, it is also responsible for guiding the track to accurately wrap around a series of road wheels, and ensure that the track maintains the correct track to prevent it from falling off or twisting.

[0003] The guide gear cover is made of 38CrSi die forgings. Each piece of blank material can be processed into 2 guide gear cover products. The appearance and consistency of the blank are poor. Because the product is an important component in the vehicle motion system and the production base is large, the production efficiency and quality requirements are high. The processing of the guide gear cover is divided into six processes, and the order is: 1. Milling two sides → 2. Drilling, boring → 3. Drilling, milling, milling steps, chamfering on the A side → 4. Drilling, milling, milling steps, chamfering on the B side → 5. Milling 60-degree bevels on both ends → 6. Cutting. Among them, process 5 uses a CNC milling machine, using a flat-mouth vise with a special jaw clamp. Because the angle to be processed requires a large amount of allowance to be removed, the milling time of a single piece is long, the tool cost is high, and the economic benefits are poor, it is difficult to meet the current production needs. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The invention provides a fast assembly and disassembly sawing machine tool and a processing method to solve the technical problems of low processing efficiency, high tool cost and high labor intensity of operators.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the present invention proposes a quick-loading and unloading sawing machine tool, which includes a positioning base plate, a left angle bracket, a right angle bracket, a mandrel, a locking seat, a positioning baffle and an adjusting top screw; wherein,

[0008] The positioning base plate is fixedly connected to the sawing machine workbench; the left angle bracket and the right angle bracket are both right-angle triangular plate structures, and two U-shaped grooves for installing the mandrel are processed on the hypotenuse, and the two sides of the U-shaped groove are parallel to the hypotenuse; the bottoms of the left angle bracket and the right angle bracket are respectively fixed to the left and right sides of the upper surface of the positioning base plate by two hexagon socket bolts, and the inner planes of the left angle bracket and the right angle bracket are kept parallel, and the corresponding U-shaped grooves are kept parallel;

[0009] The locking chuck is processed with two chuck inner holes corresponding to the inner holes of the workpiece, which are used to be passed on the two mandrels; each locking chuck is respectively processed with a saw blade guide opening on the outer side of the chuck inner hole, which is used to guide the saw blade when processing the incision connected to the inner hole of the workpiece on the semi-finished workpiece to prevent the saw blade from running off;

[0010] The two mandrels are used to fix multiple semi-finished workpieces to be processed. During processing, multiple semi-finished workpieces are sequentially passed through the inner holes of the two guide gear covers and passed through the two mandrels. A locking seat is passed through each end of the two mandrels. The saw blade guide openings on the two locking seats are in the same direction. The two mandrels are pushed into the U-shaped grooves of the left angle bracket and the right angle bracket in parallel, and the positioning, support, loading and unloading of the mandrels are achieved through the U-shaped grooves.

[0011] The two positioning baffles are respectively installed on the outer planes of the left angle bracket and the right angle bracket through hexagon socket bolts; each positioning baffle is installed with an adjusting screw, and the two adjusting screws 5 are used to tighten and prevent the two locking sockets from loosening, so that the two locking sockets and the semi-finished workpieces are arranged compactly and without gaps.

[0012] Furthermore, the top angle of the hypotenuse of the left angle bracket and the right angle bracket is 30 degrees.

[0013] Furthermore, the mandrel is processed with a plane in the cutting direction of the saw blade for avoiding the saw blade.

[0014] Furthermore, the core shaft, the left angle bracket, the right angle bracket and the locking seat are all quenched, and the quenching hardness reaches HRC38-42, and the other parts are tempered, and the hardness is HRC28-32.

[0015] Furthermore, the workpiece is a guide gear cover.

[0016] In addition, the present invention also proposes a quick-loading and unloading sawing machine processing method, which adopts the quick-loading and unloading sawing machine tooling, and comprises the following steps:

[0017] S1. Put multiple semi-finished workpieces on two mandrels in sequence, and put a locking card holder on both ends of the two mandrels to ensure that the opening directions of the two locking card holders are consistent to avoid sawing the mandrels when completing sawing;

[0018] S2. Install the two mandrels equipped with the semi-finished workpiece and the locking holder into the U-shaped grooves of the left angle bracket and the right angle bracket, tighten the two locking holders to prevent loosening through two adjusting screws, arrange the two locking holders and the semi-finished workpiece compactly and without gaps, and limit the axial movement of the semi-finished workpiece along the mandrel;

[0019] S3. Start the sawing machine, adjust the sawing parameters, adjust the first incision position on the upper right side of the workpiece to coincide with the longitudinal cutting position of the saw blade, start sawing, and after sawing through the inner hole of the workpiece, the first incision on the upper right side of the workpiece is completed;

[0020] S4. Remove the semi-finished workpiece with the first cut and the two mandrels of the locking holder from the left angle bracket and the right angle bracket, flip 180 degrees along the axis of the mandrel, repeat steps S2 and S3, and process the second cut on the right side of the lower side of the workpiece;

[0021] S5. Remove the two mandrels with the semi-finished workpiece and the locking holder after the second cut from the left angle bracket and the right angle bracket, remove the two locking holders on the mandrel, turn the locking holder 180 degrees and install it on the mandrel again, then turn the entire mandrel 180 degrees left and right, repeat steps S2 and S3, and process the third cut on the lower left side of the workpiece;

[0022] S6. According to step S4, a fourth incision is processed on the upper left side of the workpiece;

[0023] S7. Remove the mandrel, disassemble the locking holder and the semi-finished workpiece to obtain the finished workpiece.

[0024] Furthermore, the width of the saw blade guiding opening of the locking socket is 0.2 mm wider than the thickness of the saw blade.

[0025] Furthermore, a band saw blade with a thickness of 2 mm is used.

[0026] Furthermore, during the sawing process, coolant is used to cool the saw blade and flush the chips away from the cutting position.

[0027] (III) Beneficial effects

[0028] The present invention proposes a quick loading and unloading sawing machine tool and a processing method, the tool comprising a positioning base plate, a left angle bracket, a right angle bracket, a mandrel, a locking seat, a positioning baffle and an adjusting top screw. The entire tool is fixed on the sawing machine workbench, and the incision position of the workpiece is adjusted to coincide with the longitudinal cutting position of the saw blade. The sawing machine tool does not require any tools, and has high efficiency in loading and unloading workpieces. By fixing multiple products at one time, and multiple products can be sawed and processed at the same time, the clamping frequency is reduced, the processing efficiency is improved, and the manufacturing cost is greatly reduced on the basis of ensuring product quality. The present invention can achieve precise positioning of sawing processing, replace CNC milling machine processing, thereby reducing the clamping beat, reducing the labor intensity of the operator, and increasing the output per unit time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A three-dimensional diagram of the sawing machine tool structure for quickly disassembling the guide gear cover of the present invention;

[0030] Figure 2 This is an exploded view of the sawing machine tool structure for quickly disassembling the guide gear cover of the present invention;

[0031] Figure 3 This is a stereoscopic view of the guide gear cover before processing in this embodiment;

[0032] Figure 4 This is a three-dimensional view of the guide gear cover after processing in this embodiment. DETAILED DESCRIPTION

[0033] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples.

[0034] This embodiment provides a sawing machine tool for quick assembly and disassembly of a guide gear cover, and its overall structure is as follows: Figure 1 and 2 As shown, it mainly includes a positioning base plate 1, an M8 hexagon socket bolt 2, a left angle bracket 3, a positioning baffle 4, an adjusting top screw 5, an M6 hexagon socket bolt 6, a locking seat 7, a core shaft 8 and a right angle bracket 9.

[0035] The positioning base plate 1 is fixedly connected to the sawing machine workbench. The left angle bracket 3 and the right angle bracket 9 are both right-angled triangular plate structures, and the top angle of the hypotenuse is 30 degrees. Two U-shaped grooves for installing the mandrel 8 are processed on the hypotenuse, and the two sides of the U-shaped groove are parallel to the hypotenuse and consistent with the angle required by the guide gear cover.

[0036] The bottom of the left angle bracket 3 and the right angle bracket 9 are fixed to the left and right sides of the upper surface of the positioning base plate 1 by two M8 hexagonal bolts 2 respectively, and the inner planes of the left angle bracket 3 and the right angle bracket 9 remain parallel, and the corresponding U-shaped grooves remain parallel.

[0037] The locking chuck 7 is processed with two chuck inner holes corresponding to the inner holes of the guide gear cover, which are used to pass through the two mandrels 8. Each locking chuck 7 is respectively processed with a saw blade guide opening on the outer side of the chuck inner hole, which is used to guide the saw blade when processing the incision communicating with the inner hole of the guide gear cover on the semi-finished guide gear cover to prevent the saw blade from running off.

[0038] The two mandrels 8 are used to fix multiple semi-finished guide gear covers to be processed. During processing, multiple semi-finished guide gear covers are sequentially passed through the inner holes of the two guide gear covers and passed through the two mandrels 8. A locking seat 7 is passed through each end of the two mandrels 8. The saw blade guide opening directions on the two locking seats 7 are consistent. The mandrel 8 is cylindrical and has a plane for avoiding the saw blade in the cutting direction of the saw blade. The two mandrels 8 are pushed into the U-shaped grooves of the left angle bracket 3 and the right angle bracket 9 in parallel, and the positioning, support and quick loading and unloading of the mandrel 8 are achieved through the U-shaped grooves.

[0039] The two positioning baffles 4 are respectively installed on the outer planes of the left angle bracket 3 and the right angle bracket 9 through four M6 hexagon socket bolts 6. An adjusting screw 5 is installed on each positioning baffle 4, and the two adjusting screws 5 are used to tighten and prevent the two locking seats 7 from loosening, so that the two locking seats 7 and the guide gear cover semi-finished products are arranged compactly and without gaps.

[0040] Place the entire tooling with the semi-finished guide gear cover installed on the sawing machine workbench, adjust the first cut position of the guide gear cover to coincide with the longitudinal cutting position of the saw blade on the sawing machine workbench, and then fix the tooling on the sawing machine workbench with M8 hexagon socket bolts. When installing the semi-finished guide gear cover, clean the contact surfaces of the locking seat 7, the left angle bracket 3, the right angle bracket 9 and the mandrel 8, as well as the inner hole and both sides of the semi-finished guide gear cover. The specific processing steps are as follows:

[0041] S1. Place multiple guide gear cover semi-finished products (structure as Figure 3 As shown in the figure, the two mandrels 8 are sequentially passed through, and a locking seat 7 is passed through each end of the two mandrels 8 to ensure that the opening directions of the two locking seats 7 are consistent to avoid the mandrel 8 being sawed when the sawing is completed;

[0042] S2. Install the two mandrels 8 equipped with the semi-finished guide gear cover and the locking cassette 7 into the U-shaped grooves of the left angle bracket 3 and the right angle bracket 9, and tighten the two locking cassettes 7 to prevent loosening through two adjusting screws 5, so that the two locking cassettes 7 and the semi-finished guide gear cover are arranged compactly and without gaps, and the semi-finished guide gear cover is restricted from axial movement along the mandrel 8;

[0043] S3. Start the sawing machine, adjust the sawing parameters, use a band saw blade with a thickness of 2 mm, adjust the first incision position on the upper right side of the guide gear cover to coincide with the longitudinal cutting position of the saw blade, start sawing, and after sawing through the inner hole of the guide gear cover, the first incision on the upper right side of the guide gear cover is completed, and the saw blade is raised to a height of 200 mm from the workpiece to ensure that there is no interference when disassembling the mandrel 8; during the sawing process, fully use the coolant to cool the saw blade and flush the chips away from the incision position, thereby extending the service life of the saw blade;

[0044] S4. Remove the semi-finished guide gear cover with the first cut and the two mandrels 8 of the locking cassette 7 from the left angle bracket 3 and the right angle bracket 9, flip 180 degrees along the axis of the mandrel 8, repeat steps S2 and S3, and process the second cut on the right side of the lower side of the guide gear cover;

[0045] S5. Remove the two mandrels 8 with the semi-finished guide gear cover and the locking cassette 7 after the second cut from the left angle bracket 3 and the right angle bracket 9, remove the two locking cassettes 7 on the mandrel 8, turn the locking cassette 7 180 degrees and install it on the mandrel 8 again, then turn the entire mandrel 8 180 degrees left and right, repeat steps S2 and S3, and process the third cut on the left side of the lower side of the guide gear cover;

[0046] S6. According to step S4, a fourth cutout is formed on the upper left side of the guide gear cover;

[0047] S7. Remove the mandrel 8, remove the locking seat 7 and the semi-finished guide gear cover, remove the burrs and measure the workpiece to obtain the final guide gear cover product, such as Figure 4 shown.

[0048] In the present invention, the mandrel 8, the left angle bracket 3, the right angle bracket 9 and the locking card seat 7 are all quenched to a hardness of HRC38-42, and the other parts are quenched and tempered to a hardness of HRC28-32 to ensure the rigidity and stability of the tooling. The saw blade guide opening width of the locking card seat 7 is 2.2 mm, which is 0.2 mm wider than the saw blade thickness.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A quick-loading and unloading sawing machine tool, characterized in that: The quick-loading and unloading sawing machine tooling comprises a positioning base plate, a left angle bracket, a right angle bracket, a mandrel, a locking seat, a positioning baffle and an adjusting top screw; wherein, The positioning base plate is fixedly connected to the sawing machine workbench; the left angle bracket and the right angle bracket are both right-angle triangular plate structures, and two U-shaped grooves for installing the mandrel are processed on the hypotenuse, and the two sides of the U-shaped groove are parallel to the hypotenuse; the bottoms of the left angle bracket and the right angle bracket are respectively fixed to the left and right sides of the upper surface of the positioning base plate by two hexagon socket bolts, and the inner planes of the left angle bracket and the right angle bracket are kept parallel, and the corresponding U-shaped grooves are kept parallel; The locking chuck is processed with two chuck inner holes corresponding to the inner holes of the workpiece, which are used to be passed on the two mandrels; each locking chuck is respectively processed with a saw blade guide opening on the outer side of the chuck inner hole, which is used to guide the saw blade when processing the incision connected to the inner hole of the workpiece on the semi-finished workpiece to prevent the saw blade from running off; The two mandrels are used to fix multiple semi-finished workpieces to be processed. During processing, multiple semi-finished workpieces are sequentially passed through the inner holes of the two workpieces and passed through the two mandrels. A locking seat is passed through each end of the two mandrels. The saw blade guide opening directions on the two locking seats are consistent. The two mandrels are pushed into the U-shaped grooves of the left angle bracket and the right angle bracket in parallel, and the positioning, support, loading and unloading of the mandrels are realized through the U-shaped grooves. The two positioning baffles are respectively installed on the outer planes of the left angle bracket and the right angle bracket through hexagon socket bolts; each positioning baffle is installed with an adjusting screw, and the two adjusting screws 5 are used to tighten and prevent the two locking sockets from loosening, so that the two locking sockets and the semi-finished workpieces are arranged compactly and without gaps.

2. The quick-loading and unloading sawing tool as claimed in claim 1, characterized in that: The top angle of the hypotenuse of the left angle bracket and the right angle bracket is 30 degrees.

3. The quick-loading and disassembly sawing tool as claimed in claim 1, characterized in that: The mandrel is processed with a plane in the cutting direction of the saw blade for avoiding the saw blade.

4. The quick-loading and unloading sawing machine tool as claimed in claim 1, characterized in that: The core shaft, the left angle bracket, the right angle bracket and the locking seat are all quenched to a hardness of HRC38-42, and other parts are tempered to a hardness of HRC28-32.

5. The quick-loading and unloading sawing machine tool as claimed in claim 1, characterized in that: The workpiece is a guide gear cover.

6. A method for quickly loading and unloading a sawing machine, characterized in that: The processing method adopts the quick-loading and unloading sawing machine tool according to any one of claims 1 to 4, and comprises the following steps: S1. Put multiple semi-finished workpieces on two mandrels in sequence, and put a locking card holder on both ends of the two mandrels to ensure that the opening directions of the two locking card holders are consistent to avoid sawing the mandrels when completing sawing; S2. Install the two mandrels equipped with the semi-finished workpiece and the locking holder into the U-shaped grooves of the left angle bracket and the right angle bracket, tighten the two locking holders to prevent loosening through two adjusting screws, arrange the two locking holders and the semi-finished workpiece compactly and without gaps, and limit the axial movement of the semi-finished workpiece along the mandrel; S3. Start the sawing machine, adjust the sawing parameters, adjust the first incision position on the upper right side of the workpiece to coincide with the longitudinal cutting position of the saw blade, start sawing, and after sawing through the inner hole of the workpiece, the first incision on the upper right side of the workpiece is completed; S4. Remove the semi-finished workpiece with the first cut and the two mandrels of the locking holder from the left angle bracket and the right angle bracket, flip 180 degrees along the axis of the mandrel, repeat steps S2 and S3, and process the second cut on the right side of the lower side of the workpiece; S5. Remove the two mandrels with the semi-finished workpiece and the locking holder after the second cut from the left angle bracket and the right angle bracket, remove the two locking holders on the mandrel, turn the locking holder 180 degrees and install it on the mandrel again, then turn the entire mandrel 180 degrees left and right, repeat steps S2 and S3, and process the third cut on the lower left side of the workpiece; S6. According to step S4, a fourth incision is processed on the upper left side of the workpiece; S7. Remove the mandrel, disassemble the locking holder and the semi-finished workpiece to obtain the finished workpiece.

7. The method for processing a fast-loading and unloading sawing machine according to claim 6, characterized in that: The saw blade guide opening width of the locking cassette is 0.2 mm wider than the saw blade thickness.

8. The method for processing a fast-loading and unloading sawing machine according to claim 6, characterized in that: A band saw blade with a thickness of 2 mm is used.

9. The method for processing a fast-loading and unloading sawing machine according to claim 6, characterized in that: During the sawing process, coolant is used to cool the saw blade and flush the chips away from the incision.

10. The method for processing a fast-loading and unloading sawing machine according to claim 6, characterized in that: The workpiece is a guide gear cover.

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