CN212311076U

CN212311076U - Centre bore location clamp type gear hobbing machine

Info

Publication number: CN212311076U
Application number: CN202020867340.5U
Authority: CN
Inventors: 陈程; 王念磊; 李庆
Original assignee: Yantai Hindell Gear Co ltd
Current assignee: Yantai Hindell Gear Co ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2021-01-08
Anticipated expiration: 2030-05-20

Abstract

The utility model relates to a center hole positioning clamping type gear hobbing machine, which comprises a workbench, a first upright post and a second upright post, wherein the first upright post and the second upright post are connected on the workbench in a sliding manner; a hobbing cutter is rotatably connected to the cutter rest; a base station which is rotationally connected to the workbench is arranged between the first upright post and the second upright post; the base station is provided with a lower clamping component; the lower clamping assembly comprises a hydraulic cylinder fixedly arranged in the base station, a hydraulic rod which is connected in the base station in a sliding manner and the end part of which is connected with a piston rod of the hydraulic cylinder, and a fixed sleeve sleeved on the hydraulic rod; a positioning clamping block is fixedly arranged on the outer ring surface of one end of the hydraulic rod, which is far away from the base station; a pressing sleeve is sleeved on the hydraulic rod; a central through hole with the inner diameter larger than the outer diameter of the hydraulic rod is formed in the pressing sleeve; the outer end surface of the positioning fixture block is abutted against the inner side surface of the central through hole. The utility model discloses have and contradict the positioning fixture block on the hydraulic stem on the medial surface of gland central through hole, prevent to wait that the processing gear takes place axial activity and rotation, improve the tight effect of clamp.

Description

Centre bore location clamp type gear hobbing machine

Technical Field

The utility model belongs to the technical field of the technique of gear machining equipment and specifically relates to a centre bore location clamp type gear hobbing machine is related to.

Background

At present, a gear hobbing machine is the most widely applied machine tool in gear processing machines, and straight teeth and helical cylindrical gears, worm gears, chain wheels and the like can be machined on the gear hobbing machine. The gear processing machine is used for processing straight-tooth, helical-tooth, herringbone-tooth cylindrical gears and worm gears by a hob according to a generating method.

In the prior art, reference may be made to a utility model patent with an authorization publication number of CN207272340U, which discloses a gear hobbing machine, comprising a workbench and a fixing mechanism arranged on the workbench and used for fixing a gear to be machined, wherein the fixing mechanism comprises a fixing block, a hydraulic rod penetrating through the fixing block and capable of sliding in the fixing block, a fixing sleeve sleeved on the hydraulic rod and abutting against the end of the fixing block and used for sleeving the gear to be machined, and a pressing member arranged at the end of the hydraulic rod and used for pressing the gear to be machined on the fixing sleeve; the utility model discloses a can be fixed waiting to process the gear man-hour, the machining precision of fixed back gear is high and difficult production is rocked, increases machining efficiency.

The above prior art solutions have the following drawbacks: when the gear hobbing machine is used, the pressing block is arranged in the concave groove on the hydraulic rod through the notch, and the hydraulic rod is shortened to fix a gear to be machined; in the machining process, the pressing block may axially move in the concave groove, the pressing effect of the gear to be machined is weakened, and the machining effect is affected.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a centre bore location clamp type gear hobbing machine contradicts the location fixture block on the hydraulic stem on the medial surface of gland central through-hole, prevents to wait that processing gear from taking place axial activity and rotation, improves and presss from both sides tight effect.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a center hole positioning clamping type gear hobbing machine comprises a workbench, a first upright post and a second upright post, wherein the first upright post and the second upright post are connected to the workbench in a sliding mode and are arranged in parallel, and a tool rest is fixedly arranged on the first upright post; the tool rest is rotatably connected with a hobbing cutter; a base station which is rotationally connected to the workbench is arranged between the first upright post and the second upright post; the base station is provided with a lower clamping assembly; the lower clamping assembly comprises a hydraulic cylinder fixedly arranged in the base station, a hydraulic rod which is connected in the base station in a sliding manner and the end part of the hydraulic rod is connected with a piston rod of the hydraulic cylinder, and a fixed sleeve sleeved on the hydraulic rod; a positioning clamping block is fixedly arranged on the outer annular surface of one end of the hydraulic rod, which is far away from the base station; the hydraulic rod is sleeved with a pressing sleeve; a central through hole is formed in the pressing sleeve; the inner diameter of the central through hole is larger than the outer diameter of the hydraulic rod; the outer end face of the positioning fixture block is abutted against the inner side face of the central through hole.

Through adopting above-mentioned technical scheme, will wait to process the gear sleeve and establish on the fixed cover, then establish the gland cover on the hydraulic stem and make the upper end of hydraulic stem pass the gland, the hydraulic cylinder drive piston rod motion drives the hydraulic stem shrink, makes the outer terminal surface of positioning fixture block contradict on the interior anchor ring of central through-hole, will wait to process the gear through the cooperation of hydraulic stem and gland and firmly compress tightly on the fixed cover, prevent to wait to process the gear and take place axial motion and rotation. The base station drives the gear to be processed to rotate, and the hobbing cutter on the cutter rest rotates to process the gear.

The present invention may be further configured in a preferred embodiment as: the inner ring surface of the central through hole is recessed towards the direction close to the outer ring surface of the pressing sleeve to form a through groove; the shape of the through groove is matched with that of the positioning fixture block.

Through adopting above-mentioned technical scheme, with the position of lead to the groove and the position alignment of location fixture block, be convenient for the hydraulic stem passes central through-hole. After the gland is sleeved on the hydraulic rod, the gland is rotated to enable the through groove to be staggered with the positioning fixture block, and then the hydraulic cylinder drives the hydraulic rod to contract, so that the outer end face of the positioning fixture block is abutted to the inner ring face of the central through hole.

The present invention may be further configured in a preferred embodiment as: the fixing sleeve comprises a convex part and a fixing part which is arranged below the convex part and is integrally formed with the convex part; the diameter of the bulge part is smaller than that of the fixing part.

Through adopting above-mentioned technical scheme, after waiting to process the gear sleeve and establishing on the fixed cover, the diameter of bellying external anchor ring and the diameter phase-match of waiting to process the gear hole, the lower terminal surface of waiting to process the gear is inconsistent with the up end of fixed part, can prevent to wait to process the gear and take place axial motion in the course of working, has improved and has pressed from both sides tight effect.

The present invention may be further configured in a preferred embodiment as: the lower end surface of the pressing sleeve is glued with a rubber pad.

Through adopting above-mentioned technical scheme, the rubber pad can prevent that gland and area from processing between the gear pressure too big, cause the damage of waiting to process the gear up end.

The present invention may be further configured in a preferred embodiment as: the rubber pad is provided with anti-skid grains.

Through adopting above-mentioned technical scheme, the frictional force between rubber pad and the gear of treating processing can be increased to the antiskid line, prevents to take processing gear to take place axial motion.

The present invention may be further configured in a preferred embodiment as: a locking block is fixedly arranged on the lower end face of the fixed sleeve; and the surface of one end of the base station close to the fixed sleeve is provided with a locking hole matched with the locking block.

Through adopting above-mentioned technical scheme, through the cooperation in latch segment and locking hole, can fix the upper end face at the base station with fixed cover, prevent fixed cover motion.

The present invention may be further configured in a preferred embodiment as: an upper clamping assembly is arranged on the second upright post; the upper clamping assembly comprises a fixed frame connected to the second upright post in a sliding manner, a positioning cone fixedly arranged at the end part of the fixed frame and an air cylinder driving the fixed frame to slide; the upper end face of the hydraulic rod is provided with a taper hole matched with the positioning cone.

Through adopting above-mentioned technical scheme, cylinder drive mount slides along the stand to the direction that is close to clamping component down for the taper hole cooperation of location awl and hydraulic stem upper end plays two-way tight effect of clamp, has improved the processing effect.

The present invention may be further configured in a preferred embodiment as: the hydraulic rod is in threaded connection with the end part of the piston rod of the hydraulic cylinder.

Through adopting above-mentioned technical scheme, threaded connection is convenient for the dismantlement and the change of hydraulic stem.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the gear to be machined is sleeved on the fixing sleeve, then the pressing cover is sleeved on the hydraulic rod, the upper end of the hydraulic rod penetrates through the pressing cover, the hydraulic cylinder drives the piston rod to move to drive the hydraulic rod to contract, the outer end face of the positioning clamping block abuts against the inner annular face of the central through hole, the gear to be machined is tightly pressed on the fixing sleeve through the cooperation of the hydraulic rod and the pressing cover, and the gear to be machined is prevented from moving axially and rotating. The base station drives the gear to be processed to rotate, and the hobbing cutter on the cutter rest rotates to process the gear;

2. after the gear to be machined is sleeved on the fixing sleeve, the diameter of the outer ring surface of the protruding part is matched with the diameter of the inner hole of the gear to be machined, and the lower end surface of the gear to be machined is abutted against the upper end surface of the fixing part, so that the gear to be machined can be prevented from moving axially in the machining process, and the clamping effect is improved;

3. the cylinder drive mount slides along the stand to the direction that is close to last clamping component for the taper hole cooperation of location awl and hydraulic stem upper end plays two-way tight effect of clamp, has improved the processing effect.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a schematic view showing the construction of the lower clamp assembly in the embodiment;

FIG. 3 is a schematic cross-sectional view of a lower clamp assembly in an embodiment;

FIG. 4 is a schematic view showing the structure of the pressure sleeve according to the embodiment.

Reference numerals: 1. a work table; 2. a first upright post; 3. a second upright post; 4. a tool holder; 5. a hobbing cutter; 6. a base station; 61. a locking hole; 7. a lower clamping assembly; 71. a hydraulic cylinder; 72. a hydraulic lever; 721. positioning a fixture block; 722. a taper hole; 73. fixing a sleeve; 731. a boss portion; 732. a fixed part; 7321. a locking block; 8. an upper clamping assembly; 81. a fixed mount; 82. positioning a cone; 9. pressing the sleeve; 91. a central through hole; 911. a through groove; 10. a rubber pad; 101. anti-skid lines; 11. and (5) processing the gear.

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 center locating hole clamp type gear hobbing machine, including workstation 1, there are stand 2 and stand two 3 along its length direction sliding connection on the workstation 1, and stand 2 and stand two 3 are parallel to each other and equal perpendicular to workstation 1 sets up. A tool rest 4 is fixedly arranged on the first upright post 2, and a hobbing cutter 5 is rotatably connected to the tool rest 4; a base station 6 rotatably connected to the workbench 1 is arranged between the first upright post 2 and the second upright post 3, and a lower clamping assembly 7 used for compressing the gear 11 to be processed is arranged on the base station 6. An upper clamping assembly 8 is arranged on the second upright post 3 and is positioned right above the lower clamping assembly 7.

When in use, the gear 11 to be processed is fixed between the upper clamping component 8 and the lower clamping component 7, so that the gear does not shake in the processing process; then the hobbing cutter 5 on the cutter frame 4 rotates at high speed to process the gear 11 to be processed.

Referring to fig. 2 and 3, the lower clamping assembly 7 includes a hydraulic cylinder 71 fixed inside the base 6, a hydraulic rod 72 slidably connected inside the base 6 and having an end screwed to a piston rod of the hydraulic cylinder 71, and a fixing sleeve 73 covering the hydraulic rod 72. During processing, the gear 11 to be processed is sleeved on the fixing sleeve 73, so that the gear 11 to be processed can be better fixed, the fixing sleeve 73 comprises a protruding part 731 and a fixing part 732 which is arranged below the protruding part 731 and is integrally formed with the protruding part 731, and the diameter of the protruding part 731 is smaller than that of the fixing part 732 and is matched with the inner diameter of the gear 11 to be processed. After the gear 11 to be machined is sleeved on the fixing sleeve 73, the lower end surface of the gear 11 to be machined is abutted against the upper end surface of the fixing part 732, so that the gear 11 to be machined can be prevented from moving axially in the machining process.

The end face of the fixing part 732, which is far away from the protrusion 731, is fixedly provided with a locking block 7321, the upper end face of the base station 6 is provided with a locking hole 61 matched with the locking block 7321, the outer surface of the locking block 7321 is attached to the inner wall of the locking hole 61, and the fixing sleeve 73 can be prevented from driving the gear 11 to be processed to move axially together.

Referring to fig. 2 and 3, an annular pressing sleeve 9 is arranged above the hydraulic rod 72, and after the gear 11 to be machined is sleeved on the fixing sleeve 73, the pressing sleeve 9 is sleeved on the hydraulic rod 72 to further clamp the gear 11 to be machined. In order to improve the clamping effect, a plurality of positioning clamping blocks 721 are fixedly arranged on the outer annular surface of one end of the hydraulic rod 72, which is far away from the base 6; the pressing sleeve 9 is internally provided with a central through hole 91 with the inner diameter larger than the outer diameter of the hydraulic rod 72, and the inner side surface of the central through hole 91 is recessed towards the direction close to the outer ring surface of the pressing sleeve 9 to form a plurality of through grooves 911 with the shapes matched with the positioning fixture blocks 721.

When the hydraulic press sleeve is used, firstly, the through groove 911 is aligned with the positioning fixture block 721, and the press sleeve 9 is sleeved on the hydraulic rod 72; then the pressing sleeve 9 is rotated to make the through groove 911 staggered with the positioning fixture block 721; the hydraulic cylinder 71 drives the hydraulic rod 72 to contract, so that the outer end surface of the positioning block 721 abuts against the inner annular surface of the central through hole 91, and the gear 11 to be machined can be pressed on the fixing sleeve 73.

Referring to fig. 1 and 2, the upper clamping assembly 8 includes a fixing frame 81 slidably connected to the second upright 3, a positioning cone 82 fixedly disposed at an end of the fixing frame 81, and a cylinder driving the fixing frame 81 to slide. The upper end face of the hydraulic rod 72 is provided with a taper hole 722 matched with the positioning cone 82, after the lower clamping assembly 7 clamps the gear 11 to be processed, the air cylinder drives the fixing frame 81 to move so as to enable the fixing frame to slide along the second upright post 3, and the positioning cone 82 is clamped in the taper hole 722 at the upper end of the hydraulic rod 72, so that the gear 11 to be processed is further clamped.

Referring to fig. 4, in order to prevent the gear 11 to be processed from being damaged by too large pressure of the pressing sleeve 9, a rubber pad 10 is glued on the lower end surface of the pressing sleeve 9, and a plurality of anti-slip grains 101 are arranged on the side surface of the rubber pad 10 contacting with the gear 11 to be processed, so that friction between the gear 11 to be processed and the gear 11 to be processed is increased, and the gear 11 to be processed is prevented from moving.

The implementation principle of the embodiment is as follows: when in use, firstly, the gear 11 to be processed penetrates through the hydraulic rod 72 and is sleeved on the fixed sleeve 73; secondly, sleeving the pressing sleeve 9 on the hydraulic rod 72 and rotating the pressing sleeve 9 to enable the through groove 911 and the positioning fixture block 721 to be staggered; then the hydraulic cylinder 71 drives the hydraulic rod 72 to contract, so that the positioning fixture block 721 is abutted against the inner annular surface of the central through hole 91; then, the air cylinder drives the fixed frame 81 to move, so that the positioning cone 82 is clamped in the conical hole 722 at the upper end of the hydraulic rod 72, and the gear 11 to be processed is clamped in a bidirectional mode; and finally, the base 6 drives the gear 11 to be processed to rotate, and the hobbing cutter 5 rotates at a high speed, so that the gear 11 to be processed can be processed.

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. A center hole positioning clamping type gear hobbing machine comprises a workbench (1), a first upright post (2) and a second upright post (3) which are connected to the workbench (1) in a sliding mode and arranged in parallel, wherein a tool rest (4) is fixedly arranged on the first upright post (2); a hobbing cutter (5) is rotatably connected to the cutter frame (4); a base station (6) which is rotationally connected to the workbench (1) is arranged between the first upright post (2) and the second upright post (3); the method is characterized in that: a lower clamping component (7) is arranged on the base station (6); the lower clamping assembly (7) comprises a hydraulic cylinder (71) fixedly arranged in the base station (6), a hydraulic rod (72) which is connected in the base station (6) in a sliding manner and the end part of which is connected with a piston rod of the hydraulic cylinder (71), and a fixed sleeve (73) sleeved on the hydraulic rod (72); a positioning clamping block (721) is fixedly arranged on the outer annular surface of one end, far away from the base station (6), of the hydraulic rod (72); the hydraulic rod (72) is sleeved with a pressing sleeve (9); a central through hole (91) is formed in the pressing sleeve (9); the inner diameter of the central through hole (91) is larger than the outer diameter of the hydraulic rod (72); the outer end surface of the positioning clamping block (721) is abutted against the inner side surface of the central through hole (91).

2. A centre-hole located clamping hobbing machine as claimed in claim 1, characterised in that: the inner ring surface of the central through hole (91) is recessed towards the direction close to the outer ring surface of the pressing sleeve (9) to form a through groove (911); the shape of the through groove (911) is matched with that of the positioning fixture block (721).

3. A centre-hole located clamping hobbing machine as claimed in claim 1, characterised in that: the fixing sleeve (73) comprises a convex part (731) and a fixing part (732) which is arranged below the convex part (731) and is integrally formed with the convex part (731); the diameter of the projection part (731) is smaller than that of the fixing part (732).

4. A centre-hole located clamping hobbing machine as claimed in claim 1, characterised in that: the lower end surface of the pressing sleeve (9) is glued with a rubber pad (10).

5. The central bore location clamp hobbing of claim 4, wherein: the rubber pad (10) is provided with anti-skid grains (101).

6. A centre-hole located clamping hobbing machine as claimed in claim 1, characterised in that: a locking block (7321) is fixedly arranged on the lower end surface of the fixed sleeve (73); the surface of one end of the base station (6) close to the fixed sleeve (73) is provided with a locking hole (61) matched with the locking block (7321).

7. A centre-hole located clamping hobbing machine as claimed in claim 1, characterised in that: an upper clamping assembly (8) is arranged on the second upright post (3); the upper clamping assembly (8) comprises a fixed frame (81) connected to the second upright post (3) in a sliding manner, a positioning cone (82) fixedly arranged at the end part of the fixed frame (81) and a cylinder for driving the fixed frame (81) to slide; the upper end surface of the hydraulic rod (72) is provided with a taper hole (722) matched with the positioning taper (82).

8. A centre-hole located clamping hobbing machine as claimed in claim 1, characterised in that: the hydraulic rod (72) is in threaded connection with the end part of the piston rod of the hydraulic cylinder (71).