CN115674013A - Hob Compound Grinder Double Top Tailstock - Google Patents

Abstract

The double-top tailstock of the hob compound grinding machine disclosed by the present invention comprises a workbench fixedly connected to the X-axis supporting plate, a tailstock base is connected to the workbench, and a slidable chute is arranged between the workbench and the tailstock base a, there is a locking structure in the chute a, the tailstock slider structure is connected to the tailstock base, a slidable chute b is set between the tailstock slider structure and the tailstock base, and the direction of the chute b is in line with the slide Groove a goes vertically, and the tailstock slide seat structure is also connected with the top structure and the handwheel drive structure. The double-top and tailstock of the hob compound grinding machine of the present invention makes the grinding machine suitable for hobbing cutters with a wider range of grinding modules and larger diameters through direct switching between the double centers, and increases the application range of the hob compound grinder .

Description

Hob Compound Grinder Double Top Tailstock

technical field

The invention belongs to the technical field of mechanical processing equipment, and in particular relates to a double-top tailstock for a hob compound grinding machine.

Background technique

The gear hob is the most common hobbing tool. The modulus of the commonly used gear hob is 1-6mm, usually the outer diameter is less than 260mm, the length is less than 300mm, and the helix angle of the spiral groove is not more than 35°. At present, the main process steps of the gear hob are: turning each part - drilling the inner hole - drawing the key groove - turning the tooth shape - milling the chip groove - shoveling the tooth shape - heat treatment - grinding the reference surface - grinding the front edge surface - relief grinding the tooth shape - Several processes such as precision testing require a variety of special equipment, many processes, high labor intensity, high production management costs, and long production cycles. The hob compound grinding machine is a grinding machine specially developed to realize high-precision CNC grinding of hobbing tools. It completes the gear making process after the heat treatment of the hobbing tool in one clamping, and realizes the spade grinding and sharpening grinding of the tooth profile of the hobbing tool. Cut and so on.

The structural layout of the hob grinding machine tool is generally that the headstock is fixedly installed on the X-axis pallet, and the tailstock and the pallet are matched by hard rail structures such as dovetails. The relative movement between the tailstock and the pallet is sliding friction, and the friction The force is very large, because the movement of the tailstock on the pallet is generally directly pushed and pulled by manpower, and the weight of the tailstock is relatively heavy, so it is very laborious for manpower to push and pull the tailstock with a certain matching relationship, and frequent pushing and pulling will make The wear of the hard rail is accelerated, which affects the overall accuracy of the tailstock. At present, the tailstocks of most hob grinding machine tools are mostly single-top structures. When performing shoveling grinding and edge grinding of the tooth profile of the hobbing tool, the single-top tailstock structure will limit the modulus and size of the hobbing tool. The outer diameter of the hob greatly limits the applicable range of the grinder.

Contents of the invention

The purpose of the present invention is to provide a hob compound grinding machine with double tops and tailstocks. By directly switching between the double tops, the grinder is suitable for hobbing tools with a wider range of grinding modulus and a larger diameter, increasing the hobbing capacity. The range of application of knife compound grinder.

The technical solution adopted in the present invention is that the double-top tailstock of the hob compound grinder includes a workbench fixed on the X-axis supporting plate, a tailstock base is connected to the workbench, and a A slidable chute a, a locking structure is arranged in the chute a, a tailstock sliding seat structure is connected to the tailstock base, a slidable chute b is arranged between the tailstock sliding seat structure and the tailstock base, and the sliding The direction of groove b is perpendicular to the direction of chute a, and the structure of the tailstock slide seat is connected with the top structure and the handwheel drive structure.

The present invention is also characterized in that,

The bottom surface of the tailstock base is fixedly connected with several tailstock positioning blocks.

The locking structure includes a screw rod that runs through the base of the tailstock, and the screw rod is connected with a nut arranged in the chute a through threads.

The structure of the tailstock slider includes a cross slide. The top surface of the cross slide is respectively provided with a groove and a chute c along the direction of the chute a. There is a hydraulic cylinder in the groove. The cross slide is connected to the tailstock slide through the chute c. The cross slide is connected to the base of the tailstock through the chute b; the side of the cross slide is fixed with the limit block b, and the top surface of the tailstock base is fixed with the limit block c which matches the limit block b and abuts on the limit. .

The top structure includes a tailstock box, the top jacket is fixedly connected to the side of the tailstock box, the top jacket is connected to the top b, the side of the tailstock box is also fixed to the top a, the top a and the top b are located on the same side, and The axis center of top a and the axis center of top b are located on the same horizontal plane, and the tailstock box is fixedly connected to the top surface of the tailstock slide.

The side of the tailstock slide is fixed with a positioning plate, the positioning plate is on the same side as the top jacket, and the positioning plate is connected with the hydraulic cylinder through a hydraulic rod; the side of the tailstock slide is also provided with an adjustment plate for adjusting the bus bar of the top a side.

Top a is Mohs 3 top, top b is Mohs 1 top.

The handwheel drive structure includes a screw connected to the side of the cross slide, the extension direction of the screw is consistent with the direction of the chute b, and a handwheel is fixed at one end of the screw; the handwheel drive structure also includes a handwheel bracket fixed to the side of the tailstock base, A through hole is opened on the surface of the handwheel bracket, and the screw rod passes through the through hole.

There is also an auxiliary support structure on the workbench. The auxiliary support structure includes a workpiece support a. The surface of the workpiece support a is fixed with a workpiece support b. The workpiece support c; the inner side of one side of the workpiece support a abuts against the side of the worktable, and the workpiece support a is connected to the surface of the worktable through the chute a.

The chute a is an inclined T-shaped groove, the chute b and the chute c are both dovetail grooves, the inner side of the chute b is provided with the inlay a, and the inner side of the chute c is provided with the inlaid bar b.

The beneficial effect of the present invention is,

(1) The double-top tailstock of the present invention has a double-top top structure, which can make the tailstock applicable to a wider range of modules and workpiece diameters, and increase the hobbing tool range of the hob compound grinding machine.

(2) The direction of the chute connecting the cross slide, the tailstock slide and the tailstock base in the double-top tailstock of the present invention is perpendicular to each other, so that the double-top replacement action of the tailstock and the top tightening and loosening action of the tailstock can be operated independently without interfering with each other , The overall double-top tailstock has simple structure, convenient installation, convenient operation, easy adjustment and good stability.

(3) The double-top tailstock of the present invention is driven by the handwheel to realize double-top replacement, which makes the operation convenient and labor-saving; the support of the workpiece support can ensure the operation safety in the process of loading and unloading workpieces of different specifications on the grinding machine.

Description of drawings

Fig. 1 is the structural representation of the double top tailstock of hob compound grinder of the present invention;

Fig. 2 is a side view of the double top tailstock of the hob compound grinder of the present invention;

Fig. 3 is a top view of the double center and tailstock of the hob compound grinder of the present invention.

In the figure, 1. Tailstock box, 2. Tailstock slide, 3. Cross slide, 4. Tailstock base, 5. Workbench, 6. Top jacket, 7. Adjusting plate, 8. Insert a , 9. Limiting block d, 10. Tailstock positioning block, 11. Workpiece support a, 12. Workpiece support b, 13. Workpiece support c, 14. Positioning plate, 15. Inlay b, 16. Locking structure, 17. Limiting block a, 18. Handwheel bracket, 19. Screw rod, 20 guide key, 21. Top a, 22. Top b, 23. Limiting block b, 24. Limiting block c, 25. Workpiece support d , 26. X-axis support plate, 27. Hand wheel, 28. Hydraulic cylinder, 29. Chute a, 30. Chute b, 31. Chute c.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The structure of the double-top tailstock of the hob compound grinder of the present invention is as shown in Figure 1, and comprises the workbench 5 that is fixed on the top surface of the X-axis support plate 26, the top surface of the workbench 5 is connected with the tailstock base 4, the workbench 5 A chute a29 that can slide relative to the tailstock base 4 is provided, and the chute a29 adopts an inclined T-shaped groove to ensure the stability of the device during the sliding process. Several tailstock positioning blocks are fixedly connected to the bottom surface of the tailstock base 4 10. A number of tailstock positioning blocks 10 are in contact with the side of the workbench 5, so that when the tailstock base 4 slides and adjusts its position relative to the workbench 5, the coaxiality requirements for processing are not affected, and the adjustment error is reduced. The workbench 5 The limit block d9 is fixedly connected to the sliding direction of the tailstock base 4 to prevent the tailstock base 4 from falling off from the chute a29 during the sliding process.

The top surface of the tailstock base 4 is connected with a tailstock slide structure, and the tailstock slide structure includes a cross slide 3 slidingly connected with the tailstock base 4 through the chute b30, and the chute b30 is opened at the tailstock along the direction of the vertical chute a29. The top surface of the frame base 4 and the top surface of the cross slide 3 are also provided with a chute c31 along the direction of the parallel chute a29. Both the chute b30 and the chute c31 adopt the dovetail groove type, and the chute b30 and the chute c31 are vertical, so that The forward and backward movement of the top and the left and right replacement of the double top are carried out separately, which makes the structural layout clearer, the assembly easier and the stability better.

The chute b30 is provided with an inlay a8, through which the fit precision of the dovetail groove and the size of the sliding friction force can be adjusted more conveniently.

The top surface of the tailstock slide table 2 is fixedly connected with a top structure, the top structure includes a tailstock box body 1, the side of the tailstock box body 1 is fixedly connected with a top jacket 6, and a through hole is opened on the surface of the top jacket 6, and the through hole is fixed. The top b22 is connected, and there is a top through hole on the side of the tailstock box. There is a top a21 in the top through hole. The top a21 adopts the Mohs 3 top, and the top b22 adopts the Mohs 1 top. The size of the top is configured to make the tailstock applicable. Wider range of modules and workpiece diameters. The top a21 and the top jacket 6 are located on the same side, and the axis of the top b22 is on the same level as the axis of the top a21. The tailstock box 1 is fixed on the top surface of the tailstock slide 2, and the tailstock box 1 and the tailstock A guide key 20 is arranged between the sliding tables 2 to facilitate more precise assembly of equipment. Tailstock slide table 2 side also is provided with the adjustment board 7 that regulates top a21 side busbar, makes adjustment operation more convenient.

As shown in FIG. 2 , a locking structure is provided in the chute a29 , and the locking structure 16 includes a screw rod penetrating through the tailstock base 4 , and the screw rod is connected with a nut provided in the chute a29 through threads. Push the tailstock base 4 to the position to be processed, and turn the screw to lock and fix the tailstock base 4.

One side of the cross slide 3 is provided with a handwheel drive structure, the handwheel drive structure includes a screw 19 connected to the side of the cross slide 3, the extension direction of the screw 19 is consistent with the direction of the chute b30, and one end of the screw 19 is fixedly connected with a handwheel 27, When it is necessary to switch the top, it is only necessary to turn the hand wheel 27 to push the cross slide 3 to slide to complete the switching between the tops, which is convenient and labor-saving; the hand wheel drive structure also includes a hand wheel bracket 18 fixed on the side of the tailstock base 4 , The surface of the hand wheel bracket 18 has a through hole, and the screw rod 19 passes through the through hole.

The top surface of the cross slide 3 has a groove along the direction of the chute a29, and a hydraulic cylinder 28 for controlling the sliding of the tailstock slide 2 is fixed in the groove. The hydraulic cylinder 28 is connected to the positioning plate 14 through a hydraulic rod, and the positioning plate 14 is fixed on the The side of the tailstock slide table 2, and the positioning plate 14 is on the same side as the top jacket 6, which provides driving force for the top tightening and loosening of the top structure; the chute c31 is provided with an inlay b15, which can be adjusted more conveniently Fitting precision of dovetail groove and magnitude of sliding friction.

As shown in Figure 3, the side of the cross slide 3 is fixed to the limit block b23, and the top surface of the tailstock base 4 is fixed to the limit block c24 that cooperates with the limit block b23 and abuts the limit to provide higher positioning accuracy. .

An auxiliary support structure is also provided on the workbench 5, and the auxiliary support structure includes a workpiece support a11, which is connected with the workbench 5 through the chute a29; The workbench 5 is a workpiece support c13 that moves vertically up and down. The cross section of the workpiece support b12 is I-shaped. One side of the workpiece support b12 is also provided with a workpiece support d25 as a hard limit stopper, and the workpiece support d25 is fixedly connected to the top surface of the workpiece support a11.

The inner side of one side of the workpiece support a11 abuts against the side of the workbench 5 and is used for positioning and guiding the workpiece support a11 when sliding to ensure the accuracy of machining.

When the double-top tailstock of the present invention is used, the workpiece to be processed is hoisted on the hob compound grinding machine, so that the axis of the workpiece to be processed is coaxial with the axis of the top a21 or top b22, and one end of the workpiece is tightened on the top of the top a21 or top b22. , move the auxiliary support mechanism to a suitable position under the workpiece, then move the tailstock base 4 to a suitable position, rotate the screw rod inserted into the chute a29, fix the tailstock base 4 and the auxiliary support mechanism on the workbench 5, and then According to the size of the workpiece to be processed, rotating the hand wheel 27 drives the screw 19 to rotate, and drives the cross slide 3 to switch the top. After the top a21 or top b22 is switched to a suitable position and locked at the current top position, the hydraulic oil cylinder 28 will act with oil. Connect the positioning plate 14 through the hydraulic rod to drive the top mechanism to move forward until the top a21 or the top b22 withstands the workpiece, and then the lifting mechanism can be disassembled to process the workpiece.

After the workpiece is processed, the workpiece is connected to the hoisting mechanism, and the hydraulic oil cylinder 28 acts with oil, and the positioning plate 14 is connected with the hydraulic rod to drive the top mechanism to move backward until the top leaves the workpiece, at which time the workpiece can be unloaded. Pay attention when adjusting the upper and lower positions of the workpiece support c13 of the auxiliary support mechanism and the workpiece to be processed. The workpiece support c13 can be stopped and fixed when there is a small gap between the workpiece support c13 and the workpiece to be processed. The auxiliary support mechanism only plays an auxiliary role in the loading and unloading process. Supporting and protecting, not actually involved in the machining movement of the grinding machine.

Claims (10)

1. Double-centre tailstock of hob compound grinding machine, its characterized in that includes workstation (5) of rigid coupling on X axle layer board (26), be connected with tailstock base (4) on workstation (5), be provided with slidable spout a (29) between workstation (5) and tailstock base (4), be provided with locking structure (16) in spout a (29), be connected with tailstock slide structure on tailstock base (4), be provided with slidable spout b (30) between tailstock slide structure and tailstock base (4), spout b (30) trend is perpendicular with spout a (29) trend, tailstock slide structural connection has top structure and hand wheel drive structure.

2. The hob compound grinder double-center tailstock according to claim 1, characterized in that a plurality of tailstock positioning blocks (10) are fixedly connected to the bottom surface of the tailstock base (4).

3. The hob compound grinder double-center tailstock according to claim 1, characterized in that the locking structure (16) comprises a screw rod penetrating through the tailstock base (4), and the screw rod is connected with a nut arranged in the sliding groove a (29) through threads.

4. The hob compound grinding machine double-center tailstock according to any one of claims 1 to 3, characterized in that the tailstock slide seat structure comprises a cross sliding table (3), the top surface of the cross sliding table (3) is respectively provided with a groove and a sliding groove c (31) along the trend of the sliding groove a (29), a hydraulic oil cylinder (28) is arranged in the groove, the cross sliding table (3) is connected with the tailstock sliding table (2) through the sliding groove c (31), and the cross sliding table (3) is connected with the tailstock base (4) through a sliding groove b (30); cross slip table (3) side rigid coupling has stopper b (23), tailstock base (4) top surface rigid coupling has and cooperates spacing stopper c (24) of butt with stopper b (23).

5. The hob compound grinding machine double-tip tailstock according to claim 4, characterized in that the tip structure comprises a tailstock box body (1), a tip clamping sleeve (6) is fixedly connected to the side surface of the tailstock box body (1), a tip b (22) is connected to the tip clamping sleeve (6), a tip a (21) is further fixedly connected to the side surface of the tailstock box body (5), the tip a (21) and the tip b (22) are located on the same side, the axis of the tip a (21) and the axis of the tip b (22) are located on the same horizontal plane, and the tailstock box body (1) is fixedly connected to the top surface of a tailstock sliding table (2).

6. The hob compound grinding machine double-tip tailstock according to claim 5, characterized in that a positioning plate (14) is fixedly connected to the side surface of the tailstock sliding table (2), the positioning plate (14) is located on the same side as the tip jacket (6), and the positioning plate (14) is connected with a hydraulic oil cylinder (28) through a hydraulic rod; and an adjusting plate (7) for adjusting a side bus of the center a (21) is further arranged on the side surface of the tailstock sliding table (2).

7. The double-tip tailstock of a hob compound grinding machine according to claim 6, characterized in that the tip a (21) is a Morse 3 tip and the tip b (22) is a Morse 1 tip.

8. The hob compound grinding machine double-center tailstock according to claim 4, characterized in that the hand wheel driving structure comprises a screw rod (19) connected to the side surface of the cross sliding table (3), the extending direction of the screw rod (19) is consistent with the trend of the sliding groove b (30), and a hand wheel (27) is fixedly connected to one end of the screw rod (19); the hand wheel driving structure further comprises a hand wheel support (18) fixedly connected to the side face of the tailstock base (4), a through hole is formed in the surface of the hand wheel support (18), and the screw rod (19) penetrates through the through hole.

9. The double-center tailstock of a hob compound grinding machine according to claim 4, characterized in that an auxiliary supporting structure is further arranged on the workbench (5), the auxiliary supporting structure comprises a workpiece support a (11), a workpiece support b (12) is fixedly connected to the surface of the workpiece support a (11), the workpiece support b (12) is I-shaped, and the workpiece support b (12) is connected with a workpiece support c (13) which vertically moves up and down relative to the workbench (5); the inner side of one side of the workpiece support a (11) is abutted against the side surface of the workbench (5), and the workpiece support a (11) is connected to the surface of the workbench (5) through a chute a (29).

10. The double-center tailstock of the hob compound grinding machine according to claim 4, wherein the sliding groove a (29) is an inclined T-shaped groove, the sliding groove b (30) and the sliding groove c (31) are dovetail grooves, the inner side of the sliding groove b (30) is provided with the panel a (8), and the inner side of the sliding groove c (31) is provided with the panel b (15).

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