CN218427632U

CN218427632U - Floating honing head

Info

Publication number: CN218427632U
Application number: CN202222604057.5U
Authority: CN
Inventors: 牟益中; 陈茂涛; 刘承建; 龚明锋; 徐茂; 许申云; 吴德虎; 李强
Original assignee: Chongqing Hongjiang Machinery Co Ltd
Current assignee: Chongqing Hongjiang Machinery Co Ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-02-03
Anticipated expiration: 2032-09-30

Abstract

The utility model provides a floating honing head, include: the honing device comprises an upper honing head body, a lower honing head body, a push rod, a feeding cone, an oilstone seat and an oilstone; the upper honing head body and the lower honing head body are connected through a universal joint; the upper honing head body is provided with a first axial through hole, the lower honing head body is provided with a second axial through hole communicated with the first axial through hole, and the outer surface of the lower honing head body is provided with a mounting groove communicated with the second axial through hole; the oilstone seat is arranged in the mounting groove, and the oilstone is assembled on the oilstone seat; the push rod part is inserted into the first axial through hole, the feeding cone is inserted into the second axial through hole, and the push rod is connected with the feeding cone; the outer wall of the feeding cone and the inner wall of the oilstone seat form inclined plane matching.

Description

Floating honing head

Technical Field

The utility model belongs to the mechanical cutting tool field, concretely relates to novel floating honing head. Belongs to the innovative design of a honing head for a vertical honing machine, and is used for honing a middle hole of a part with high precision requirement on the vertical honing.

Background

The inlet honing head matched with the inlet vertical honing machine has been used for years, is firm and durable, but has a larger defect in structural design:

1. the universal joint for floating is designed at the connecting end of the main shaft, so that the floatability of the honing head following the honing hole is poor, and the original verticality precision of the hole is damaged.

2. Because the outer circle of the oilstone is not provided with a spring, the oilstone can not be retracted through the spring when the honing is finished, and the oilstone needs to be manually pinched back before the honing of the next part every time. Once the honing head is forgotten to be pinched back or is not pinched back completely, the oilstone is stuck with the middle hole of the guide sleeve when the honing head descends. If the oilstone is slightly broken, the oilstone is replaced and repaired, which consumes time; if the oil stone is broken, the oil stone flies out, which causes serious safety accidents.

3. The honing head has large fit clearance, namely the matching of the excircle of the feeding cone and the central hole of the lower honing head body and the matching of the oilstone seat and the oilstone seat groove of the lower honing head body, so that the shape precision of the honing hole, such as roundness, cylindricity, straightness, and the like can not stably meet the requirements of design drawings.

In summary, the design, manufacture and use experience of the oilstone seat type honing head are combined based on the interface and use requirement of the honing machine for installing the honing head. The structural design of the honing head is innovated, the shape position accuracy such as verticality, roundness, cylindricity and the like after the high-precision hole of the part is honed is improved, and the safety guarantee capability during honing is improved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a floating honing head for the mesopore of honing high accuracy requirement part on the vertical honing machine. The utility model has the advantages of easily make, the honing precision is high, the security is high.

The utility model discloses technical scheme as follows:

the utility model provides a floating honing head, include:

the honing device comprises an upper honing head body, a lower honing head body, a push rod, a feeding cone, an oilstone seat and an oilstone;

the upper honing head body and the lower honing head body are connected through a universal joint;

the upper honing head body is provided with a first axial through hole, the lower honing head body is provided with a second axial through hole communicated with the first axial through hole, and the outer surface of the lower honing head body is provided with a mounting groove communicated to the second axial through hole;

the oilstone seat is arranged in the mounting groove, and the oilstone is assembled on the oilstone seat;

the push rod part is inserted into the first axial through hole, the feeding cone is inserted into the second axial through hole, and the push rod is connected with the feeding cone;

the outer wall of the feeding cone and the inner wall of the oilstone seat form inclined plane fit.

Preferably, the floating honing head further comprises: the screw cap comprises a connecting rod, a step screw plug, a large spring, a mounting seat and a T-shaped plug gauge which are sequentially arranged;

the connecting rod is sleeved on the excircle of the upper honing head, and the step screw plug, the large spring, the mounting seat and the T-shaped plug gauge are all sleeved on the excircle of the upper honing head;

the plug gauge is fixedly installed with the installation seat, and the large spring is assembled between the step screw plug and the installation seat;

one end of the connecting rod is fastened on the excircle of the upper honing head body through a step screw plug, and the other end of the connecting rod is fastened on the main shaft of the honing machine through a screw cap.

Preferably, the floating honing head further comprises: a small spring and a plug;

the small spring is sleeved on the push rod and is arranged to be attached to the upper honing head body;

the ejector head is sleeved at the end part of the push rod extending out of the connecting rod and is connected through a first pin.

Preferably, the push rod and the feed cone are connected by a second pin.

Preferably, one end of the upper honing head body facing the lower honing head body is provided with a first U-shaped opening, and one end of the lower honing head body facing the upper honing head body is provided with a second U-shaped opening;

a floating block is assembled between the first U-shaped opening and the second U-shaped opening, and the upper honing head body and the lower honing head body are respectively connected with the floating block through fixing pins;

the floating block is provided with a through hole for the push rod to pass through;

the fixed pin assembled with the upper honing head body is in clearance fit with the floating block and is in interference fit with the upper honing head body;

and the fixing pin assembled with the lower honing head body is in clearance fit with the floating block and is in interference fit with the lower honing head body.

Preferably, the end face of the upper honing head body facing the coupling rod is provided with a strip-shaped groove, and an anti-rotation pin penetrating through the coupling rod is inserted into the strip-shaped groove.

Preferably, the lower honing head body is provided with four mounting grooves, the four mounting grooves are symmetrically arranged along the radial direction of the lower honing head body, the four oilstone seats are respectively assembled in one mounting groove, and the four oilstone seats are tightly pressed through O-shaped sealing rings surrounding the four oilstone seats.

The utility model discloses beneficial effect:

1. the universal joint is moved downwards to the honing oilstone end, so that the floatability of the universal joint along with a honing hole is improved, and the honing precision is further ensured.

2. The manufacturing requirement and precision of the honing head are improved, small gaps are ensured between the oilstone seat and the mounting groove, between the excircle of the feeding cone and the second axial through hole of the lower honing head body, and the high precision requirement of the honing hole is further ensured.

3. The honing size is precisely controlled by a plug gauge arranged on the honing head body. After the plug gauge enters the hole, the honing is automatically stopped, and the control is convenient and accurate.

4. An elastic part is arranged on the oilstone seat of the honing head. After honing is finished, the oilstone is retracted by utilizing the elasticity of the oilstone. But the elastic member is not a spring but an O-ring. Because the honing head has small diameter and compact structure, parts such as the honing head body, the feeding cone, the oilstone seat, the spring and the like need to be arranged in a very small space range. In order to ensure enough strength of the honing head, the ring groove for mounting the spring cannot be too large, and a small spring is required to be selected. And the elasticity and the durability of the undersized spring are poor, and the oilstone seat cannot be pressed back after the spring is used for a period of time. The common O-shaped sealing ring is used for replacing a spring, and the O-shaped sealing ring is a quick-wear part and is prepared and replaced frequently.

Drawings

Fig. 1 is a schematic view illustrating assembly of components of the floating honing head of the present invention;

FIG. 2 is an enlarged schematic view at I of FIG. 1;

FIG. 3 is a schematic view of K-K in FIG. 1;

fig. 4 is a schematic view of the assembly of the upper honing head and the lower honing head in the present embodiment;

the following symbols are shown in the figure:

1. ejecting the head; 2. a first pin; 3. a push rod; 4. a nut; 5. a coupling rod; 6. a small spring; 7. an anti-rotation pin; 8. a step screw plug; 9. a split washer; 10. a large spring; 11. an upper honing head body; 12. a mounting seat; 13. a plug gauge; 14. a slider; 15. a fixing pin; 16. a lower honing head body; 17. a second pin; 18. an oilstone seat; 19. -oilstone; 20. a feed cone; 21. an O-shaped sealing ring.

Detailed Description

With reference to fig. 1 to 4, the present invention provides a floating honing head, including: an upper honing head body 11, a lower honing head body 16, a push rod 3, a feed cone 20, an oilstone seat 18 and an oilstone 19; the upper honing head body 11 and the lower honing head body 16 are connected through a universal joint; the upper honing head body 11 is provided with a first axial through hole, the lower honing head body 16 is provided with a second axial through hole communicated with the first axial through hole, and the outer surface of the lower honing head body 16 is provided with a mounting groove communicated with the second axial through hole; the oilstone seat 18 is arranged in the mounting groove, and the oilstone 19 is assembled on the oilstone seat 18; the push rod 3 is partially inserted into the first axial through hole, the feed cone 20 is inserted into the second axial through hole, and the push rod 3 is connected with the feed cone 20; the outer wall of the feed cone 20 forms an inclined surface fit with the inner wall of the oilstone seat 18.

Wherein the push rod 3 and the feed cone 20 are connected by a second pin 17, the push rod 3 transmitting the received force to the feed cone 20.

Specifically, one end of the upper honing head body 11 facing the lower honing head body 16 is provided with a first U-shaped opening 111, and one end of the lower honing head body 16 facing the upper honing head body 11 is provided with a second U-shaped opening 161; a floating block 14 is arranged between the first U-shaped opening 111 and the second U-shaped opening 161, and the upper honing head body 11 and the lower honing head body 16 are respectively connected with the floating block 14 through fixing pins 15; the floating block 14 is provided with a through hole for the push rod 3 to pass through; a fixing pin 15 assembled with the upper honing head body 11 is in clearance fit with the floating block 14 and is in interference fit with the upper honing head body 11; the fixing pin 15 assembled with the lower honing head body 16 is in clearance fit with the slider 14 and is in interference fit with the lower honing head body 16.

In this embodiment, the position of the universal joint is moved down from the spindle connection end to the honing oilstone end, and the floating block 14 is in clearance fit with the fixing pin 15, so that the floating block 15 has a certain floating space in the space between the first U-shaped opening and the second U-shaped opening. In addition, setting the position of the slider 15 to a position closer to the honing hole improves the floatability of the slider 15 following the honing hole, thereby improving the honing precision.

In addition, in the embodiment, a certain small gap is formed between the oilstone seat 18 and the mounting groove and between the feeding cone 20 and the second axial through hole, compared with the gap of 0.07mm-0.08mm set by an inlet honing head matched with the inlet vertical honing machine, the gap between the oilstone seat 18 and the mounting groove and the gap between the feeding cone 20 and the second axial through hole are reduced, and the small gap enables the error space between the oilstone seat 18 and the feeding cone 20 to be smaller, so that the high-precision requirement of the honing hole is ensured.

In this embodiment, the floating honing head further includes: the screw cap 4 comprises a connecting rod 5, a step screw plug 8, a large spring 10, a mounting seat 12 and a T-shaped plug gauge 13 which are sequentially arranged; the connecting rod 5 is sleeved on the outer circle of the upper honing head body 11, and the step screw plug 8, the large spring 10, the mounting seat 12 and the T-shaped plug gauge 13 are all sleeved on the outer circle of the upper honing head body 11; the plug gauge 13 is fixedly installed with the installation base 12, and the large spring 10 is assembled between the step screw plug 8 and the installation base 12; one end of a connecting rod 5 is fastened on the excircle of the upper honing head body 11 through a step screw plug 8, and the other end of the connecting rod is fastened on the excircle of the push rod 3 through a nut 4.

Specifically, the outer circle of the left end of the upper honing head body 11 is provided with an open gasket 9, the open gasket 9 is partially embedded into a groove arranged on the outer circle of the upper honing head body 11, and the open gasket 9 is in hard contact with the stepped screw plug 8 and the connecting rod 5. Before honing to the final size requirement, the plug gauge 13 does not enter the honing hole, and the right scapular surface 131 of the large outer circle on the left side of the plug gauge does not touch the signal switch. When the honing is carried out to the final size requirement, the plug gauge 13 moves downwards (the position shown in the figure moves towards the right) to enter the honing hole, the right shoulder blade 131 of the large outer circle touches a signal switch to automatically stop honing, or under the condition of not expanding the cutter, the honing is automatically stopped after the cutter is polished according to set time. The honing size is precisely controlled by a plug gauge 13 mounted on the upper honing head body 11. After the plug gauge 13 enters the honing hole, honing is automatically stopped, and control is convenient and accurate.

In this embodiment, the floating honing head further includes: a small spring 6 and a plug 1; the small spring 6 is sleeved on the push rod 3 and is attached to the upper honing head body 11; the ejector head 1 is sleeved at the end part of the push rod 3 extending out of the connecting rod 5 and is connected through a first pin 2.

Wherein, the end face of the upper honing head body 11 facing the connecting rod 5 is provided with a strip-shaped groove, and the anti-rotation pin 7 penetrating through the connecting rod 5 is inserted into the strip-shaped groove.

The four mounting grooves assembled on the lower honing head body 16 are symmetrically arranged along the radial direction of the lower honing head body 16, the four oilstone seats 18 are respectively assembled in one mounting groove, and the four oilstone seats 18 are tightly pressed through O-shaped sealing rings 21 surrounding the four oilstone seats 18. After the honing is completed, the oilstone is elastically retracted by using the O-shaped sealing ring 21.

Next, the principle of use of the floating type honing head in the present embodiment will be explained:

1. assembling a honing head:

(1) The upper honing head 11 is coupled with the lower honing head 16. A slider 14 is installed between the openings of the upper honing head body 11 and the lower honing head body 16, and a fixing pin 15 is installed. One section of the outer circle of the fixing pin 15 is in interference fit with the holes of the upper honing head body 11 and the lower honing head body 16, and the other section of the outer circle is in clearance fit with the hole of the floating block 14.

(2) Coupling of the push rod 3 with the feed cone 20. The flat at the right end of the push rod 3 extends into an open slot at the left end of the feed cone 20, is limited and fixed through a second pin 17, and then the feed cone 20 connected with the push rod 3 is inserted into a second axial through hole of the lower honing head body 16 from right to left to reach a proper position.

(3) The oilstone seat 18 is installed. 4 oilstone seats 18 are respectively placed in 4 mounting grooves of the lower honing head body 16, then two O-shaped sealing rings 21 at the left end and the right end are respectively placed in the grooves of the oilstone seats 18, and the four oilstone seats 18 are tightly pressed by the elasticity of the oilstone seats, so that the two inclined surfaces of the oilstone seats 18 are well attached to the two cones of the feeding cone 20.

(4) The plug gauge 13 is installed. The plug gauge 13 is fixed with the mounting seat 12 by screws, then the plug gauge is mounted on the outer circle of the upper honing head body 11, and finally the large spring 10 is mounted on the mounting seat 12.

(5) The above-mentioned assembled parts are fixed to the coupling rod 5. Visually, after an open slot on the excircle of the left end of the upper honing head body 11 is consistent with the direction of an anti-rotation pin 7 fixed on the connecting rod 5, the upper honing head body 11 is inserted into a middle hole of the connecting rod 5 to a limit position. Then, the split washer 9 is inserted into a groove on the outer circumference of the left end of the upper honing head body 11. Finally, the entire assembled part is firmly fixed onto the coupling rod 5 by means of the stepped nut 8.

(6) The plug 1 is assembled. A small spring 6 is firstly arranged on a push rod 3, then a top head 1 is arranged at the left end of the push rod 3, and the two are fixed by a first pin 2. The excircle of the first pin 2 is ensured to be in interference fit with the holes of the top head 1 and the push rod 3.

2. The honing head is arranged on the main shaft of the honing machine. Firstly, a push rod 3 of the assembling top 1 extends into a central hole of the main shaft, then a small excircle at the left end of a connecting rod 5 is inserted into the central hole of the main shaft, and a shoulder blade surface of the connecting rod is tightly attached to the end surface of the main shaft. Finally, the coupling rod 5 is fixed to the main shaft by means of the nut 4, i.e. the entire honing head is firmly fixed to the main shaft.

3. And starting the honing program to perform honing. Before honing, the feeding mechanism in the main shaft moves upwards under the control of the machine tool, the push rod 3 and the feeding cone 20 move upwards (towards the left in the figure) under the elastic force of the small spring 6, and the oilstone seat 18 and the oilstone 19 are retracted under the elastic force of the two O-shaped sealing rings 21. After the honing head smoothly enters the honing part hole, the feeding mechanism moves downwards again (the position shown in the figure is towards the right), and further the push rod 3 and the feeding cone 20 are pushed to move downwards. The two cones of the feed cone 20 are matched with the two inclined surfaces of the oilstone seat 18, so that the oilstone seat 18 and the oilstone 19 are rapidly pushed outwards to a set tool setting position, and honing is started.

Before the plug gauge 13 is not honed to the final size requirement, the plug gauge does not enter the honing hole, and the right shoulder blade surface of the large excircle of the plug gauge does not touch the signal switch. When the honing is required to the final size, the plug gauge 13 descends (the position shown in the figure is towards the right) and enters a honing hole, the right shoulder blade surface of the large excircle touches a signal switch, the honing is automatically stopped, or under the condition that the cutter is not expanded, the honing is automatically stopped after the cutter is polished according to set time.

Claims

1. A floating honing head, comprising:

an upper honing head body (11), a lower honing head body (16), a push rod, a feeding cone (20), an oilstone seat (18) and an oilstone (19);

the upper honing head body (11) and the lower honing head body (16) are connected through a universal joint;

the upper honing head (11) is provided with a first axial through hole, the lower honing head (16) is provided with a second axial through hole communicated with the first axial through hole, and the outer surface of the lower honing head (16) is provided with a mounting groove communicated with the second axial through hole;

the oilstone seat (18) is installed in the installation groove, and the oilstone (19) is assembled on the oilstone seat (18);

the push rod part is inserted into the first axial through hole, the feeding cone (20) is inserted into the second axial through hole, and the push rod and the feeding cone (20) are connected;

the outer wall of the feeding cone (20) forms an inclined surface fit with the inner wall of the oilstone seat (18).

2. The floating honing head of claim 1 wherein the floating honing head further comprises: the device comprises a nut (4), a connecting rod (5), a step screw plug (8), a large spring (10), a mounting seat (12) and a T-shaped plug gauge (13) which are sequentially arranged;

the connecting rod (5) is sleeved on the excircle of the upper honing head body (11), and the step screw plug (8), the large spring (10), the mounting seat (12) and the T-shaped plug gauge (13) are all sleeved on the excircle of the upper honing head body (11);

the plug gauge (13) is fixedly installed with the installation seat (12), and the large spring (10) is assembled between the step screw plug (8) and the installation seat (12);

one end of the connecting rod (5) is fastened on the excircle of the upper honing head body (11) through a step screw plug (8), and the other end is fastened on the main shaft of the honing machine through a screw cap (4).

3. The floating honing head of claim 2 wherein the floating honing head further comprises: a small spring (6) and a plug (1);

the small spring (6) is sleeved on the push rod and is arranged in a manner of being attached to the upper honing head body (11);

the ejector head (1) is sleeved at the end part of the push rod extending out of the connecting rod (5) and is connected through a first pin (2).

4. A floating honing head according to claim 1, characterized in that the push rod and the feed cone (20) are connected by a second pin (17).

5. The floating honing head according to claim 1, wherein the upper honing head (11) is provided with a first U-shaped opening at an end toward the lower honing head (16), and the lower honing head (16) is provided with a second U-shaped opening at an end toward the upper honing head (11);

a floating block (14) is assembled between the first U-shaped opening and the second U-shaped opening, and the upper honing head body (11) and the lower honing head body (16) are respectively connected with the floating block (14) through fixing pins (15);

the floating block (14) is provided with a through hole for the push rod to pass through;

a fixed pin (15) assembled with the upper honing head body (11) is in clearance fit with the floating block (14) and is in interference fit with the upper honing head body (11);

and a fixing pin (15) assembled with the lower honing head body (16) is in clearance fit with the floating block (14) and is in interference fit with the lower honing head body (16).

6. The floating honing head according to claim 2, wherein the end face of the upper honing head body (11) facing the coupling bar (5) is provided with a strip-shaped groove into which an anti-rotation pin (7) passing through the coupling bar (5) is inserted.

7. The floating type honing head according to claim 2, wherein the lower honing head body (16) is fitted with four mounting grooves, four mounting grooves are symmetrically arranged in a radial direction of the lower honing head body (16), four whetstone seats (18) are fitted into one mounting groove, respectively, and the four whetstone seats (18) are compressed by O-rings (21) surrounding the four whetstone seats (18).