CN213616013U - Cylinder hole honing tool - Google Patents

Abstract

The utility model relates to a cylinder hole honing cutter, which comprises a head body, an abrasive bar seat and a support body which are connected in sequence, wherein the head body and the abrasive bar seat are internally provided with a rising cone body, and the abrasive bar seat is provided with an abrasive bar; a tensioning cutter rod is arranged in the head body, and the lower end of the tensioning cutter rod is connected with a tensioning cone; the upper end and the lower end of the emery stick seat are respectively provided with an upper cutter retracting spring and a lower cutter retracting spring so as to enable the emery stick seat to be attached to the expanding cone; the surface of the sand bar seat is provided with a guide alloy bar, and chamfers are arranged at the upper end and the lower end of the guide alloy bar and the sand bar; and the support body is provided with an anti-collision ring capable of blocking and protecting the bottom ends of the guide alloy strips and the sand strips. The utility model discloses fine solution because of honing tool swings the honing emery stick, honing head, jar hole top of colliding with the damage, promoted equipment start rate, guaranteed product processingquality, reduceed cutter cost and worker useless, also avoided the damage of honing tool and emery stick simultaneously.

Description

Cylinder hole honing tool

Technical Field

The utility model relates to a jar hole honing cutter belongs to honing equipment technical field.

Background

When the cylinder hole honing tool is used for honing, the problems that the honing head or honing sand strip collides with the top edge (such as a chamfer) of the cylinder hole when entering the cylinder hole or in the honing process and the diameter of the cylinder hole is measured in real time in the processing process are required to be solved.

The universal joint connecting device with the tail end capable of floating is mostly adopted to be assembled and connected with a honing cutter at present, so that the uniform and stable stress on the surface of the hole wall of the cylinder hole in the honing process is ensured, the geometric precision and the surface microscopic precision of the cylinder hole after honing are ensured, the cutter connected with the universal joint connecting device capable of floating is easy to swing due to factors such as external force or rotation, and the like, when a honing head enters the cylinder hole or in the honing process, the honing head or honing emery stick collides with the top edge (such as chamfer) of the cylinder hole, and the honing head or honing emery stick is collided and damaged.

The cylinder hole honing processing generally adopts the control of the stroke times and honing time of honing tool processing to process the required cylinder hole diameter, because the abrasion conditions of emery sticks are different, the precise control of the geometric precision (including cylindricity, diameter and the like) of the cylinder hole cannot be realized by the honing processing method, and the fluctuation of the diameter, the roundness and the like often occurs.

Disclosure of Invention

An object of the utility model is to overcome exist not enough among the prior art, provide a jar hole honing tool, its fine solution because of honing tool swings the colliding with injury honing emery stick, honing head, jar hole top, promoted the equipment start rate, guaranteed product processingquality, has reduceed cutter cost and worker useless, has also avoided the damage of honing tool and emery stick simultaneously.

According to the utility model provides a technical scheme: a cylinder hole honing cutter comprises a head body, an abrasive bar seat and a support body which are sequentially connected, wherein expanding cones are arranged in the head body and the abrasive bar seat, and abrasive bars are arranged on the abrasive bar seat; a tensioning cutter rod is arranged in the head body, and the lower end of the tensioning cutter rod is connected with a tensioning cone; the upper end and the lower end of the emery stick seat are respectively provided with an upper cutter retracting spring and a lower cutter retracting spring so as to enable the emery stick seat to be attached to the expanding cone; the surface of the sand bar seat is provided with a guide alloy bar, and chamfers are arranged at the upper end and the lower end of the guide alloy bar and the sand bar; and the support body is provided with an anti-collision ring capable of blocking and protecting the bottom ends of the guide alloy strips and the sand strips.

Furthermore, built-in air paths which are communicated up and down are arranged on the head body, the sand bar seat and the support body, and air nozzle holes communicated with the built-in air paths are arranged on the guide alloy bars; the head body is provided with a gas path inlet communicated with the built-in gas path.

Further, the height of the gas nozzle hole is lower than that of the guide alloy strip.

Further, the honing cutter is in a cutter retracting state, and the height of the sand strip chamfer is lower than that of the guide alloy strip chamfer.

Further, the cone expanding body is of a double-wedge structure.

Furthermore, an anti-rotation pin and a locking groove are arranged on the head body.

Further, the anti-collision ring is fixed on the support body through bolts.

Furthermore, the top of the built-in gas path of the head body section, the outer side of the built-in gas path of the sand bar seat section and the bottom end of the built-in gas path of the support body section are respectively provided with a fabrication hole plug.

Furthermore, a compression spring is arranged on the cutter bar, the lower end of the compression spring is abutted against the head body, the upper end of the compression spring is abutted against the cutter bar, and the compression spring applies upward restoring force to the cutter bar.

Furthermore, the upper end and the lower end of the emery stick seat are respectively provided with a groove for fixing an upper knife retracting spring and a lower knife retracting spring.

Compared with the prior art, the utility model, have following advantage:

1. the measure of integrating the anti-collision ring on the honing cutter reduces the honing emery stick collision damage, the guide alloy emery stick collision damage, the workpiece collision damage and the like caused by the honing emery stick or the guide alloy emery stick colliding with the workpiece, improves the starting rate of equipment, ensures the processing quality of products, reduces the cutter cost and the work waste, and simultaneously avoids the damage of the honing cutter and the emery stick.

2. The honing emery stick and the guiding alloy strip chamfer of the honing cutter reduce the collision damage of the honing emery stick, the collision damage of the guiding alloy strip, the collision damage of the workpiece and the like caused by the collision of the honing emery stick or the guiding alloy strip with the workpiece, improve the starting rate of equipment, ensure the processing quality of products, reduce the cost and the waste of the cutter, and simultaneously avoid the damage of the honing cutter and the emery stick.

3. The honing tool is in a tool retracting state, the height of the honing emery stick chamfer is lower than that of the honing guide alloy chamfer, the honing tool can be swung by external force and is not centered in the tool feeding process, so that the guide alloy of the honing tool collides with the edge of a cylinder hole, but the honing emery stick cannot collide with the edge of the cylinder hole and a workpiece, the emery stick cannot be damaged, and the workpiece collided by the guide alloy chamfer cannot cause the honing tool to be damaged so as not to influence the starting rate of equipment.

4. The gas circuit and the gas nozzle are integrated on the honing tool, the dimensional accuracy of the cylinder hole in the honing process is monitored in real time, and the geometric dimensional accuracy such as the diameter and the roundness of the cylinder hole in the honing process is accurately ensured.

5. The air passage on the honing cutter adopts an internal passage type, and does not need to be externally connected with an air pipe for ventilation, thereby avoiding the problems of air leakage or air tightness and the like caused by frequent plugging and unplugging of the air pipe when the cutter is replaced.

6. The height of the air nozzle is lower than that of the guide alloy strip, so that the phenomenon that the air nozzle is damaged or deformed due to the fact that the honing head swings to touch the wall of the cylinder hole to guide and touch after the honing sand strip finishes retracting is avoided, and the effect that the diameter of the cylinder hole is influenced by the ventilation air pressure is further influenced.

7. The compression spring jacking cutter bar at the guide rod is used for jacking the cutter bar, the cutter bar is jacked when the honing cutter bar is unloaded or in a cutter retracting state, the cutter cone expanding body is lifted, the emery stick seat returns to a cutter retracting original position under the action of the spring cutter retracting force of the upper cutter retracting spring and the lower cutter retracting spring, and meanwhile, the guide rod is jacked, the cutter cone expanding body is lifted, so that the honing base is convenient to mount and dismount.

8. The upper part and the lower part of an abrasive strip seat of the honing tool are simultaneously supported by a double-wedge block structure, the double-wedge block expanding tool structure can realize the consistency of the radial expanding tool force and the radial expanding tool amount of the honing abrasive strip, and the consistency of the hole machining surface shape and stress is ensured.

9. The anti-collision ring is fixed with the honing cutter body by adopting bolts, and has simple structure and convenient disassembly and maintenance.

10. The upper knife retracting spring and the lower knife retracting spring are respectively fixed in the groove of the knife body by spring force, so that the knife is convenient to disassemble and maintain and reliable in structure.

11. The emery stick seat is fixed on the tool body through a retracting spring, the emery stick seat can be taken out after the spring is disassembled, the emery stick seat is convenient to replace and maintain, and the structure is reliable.

12. The emery stick seat is modular design, and the circumference of different quantity emery sticks is arranged the form through changing the emery stick seat of different models (thickness) to realize the different effects (for example circularity, roughness etc.) of cylinder hole processing.

Drawings

Fig. 1 is a cross-sectional view of the utility model of a sand strip.

Fig. 2 is a cross-sectional view of the gas circuit of the present invention.

Fig. 3 is a cross-sectional view of the guide part of the emery stick of the present invention.

Fig. 4 is a schematic structural diagram of the present invention.

Fig. 5 is a schematic diagram of honing in an engine block according to the present invention.

Description of reference numerals: 1-bolt, 2-guide alloy strip, 3-anti-collision ring, 4-lower knife retracting spring, 5-support body, 6-sand strip, 7-sand strip seat, 8-expanding cone, 9-upper knife retracting spring, 10-head body, 11-expanding knife rod, 12-built-in gas circuit, 13-compression spring, 14-anti-rotation pin, 15-process hole plug, 16-gas circuit inlet, 17-locking groove, 18-gas nozzle hole, 19-connecting rod, 20-expanding knife core rod of connecting rod, 21-anti-rotation pin mounting hole, 22-cylinder hole, 23-honing knife and 24-cylinder body.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 5, the cylinder bore honing tool of the present invention is used for honing the cylinder bore 22 of the engine block 24, and the anti-rotation pin 14 and the locking groove 17 of the honing tool are respectively fixed with the anti-rotation pin mounting hole 21 of the connecting rod 19 and the locking key. The utility model particularly comprises a head body 10, an abrasive bar seat 7 and a supporting body 5 which are connected in sequence, as shown in figure 1, a cone 8 is arranged in the head body 10 and the abrasive bar seat 7, and an abrasive bar 6 is arranged on the abrasive bar seat 7; a tensioning cutter rod 11 is arranged in the head body 10, and the lower end of the tensioning cutter rod 11 is connected with a tensioning cone 8; the expansion tool bar 11 and the expansion cone 8 are matched to drive the sand bar seat 7 and the sand bar 6 to radially expand the tool; the expansion cutter bar compression spring 13 is combined with the expansion cutter bar 11, and when the driving force of the expansion cutter bar 11 is smaller than the spring restoring force of the expansion cutter bar compression spring 13, the sand strip seat 7 and the sand strip 6 contract together with the expansion cone 8;

the upper end and the lower end of the sand bar seat 7 are respectively provided with an upper knife retracting spring 9 and a lower knife retracting spring 4 so as to enable the sand bar seat 7 to be attached to the expanding cone 8; as shown in fig. 3 and 4, the surface of the sand bar seat 7 is provided with a guide alloy strip 2, and chamfers are arranged at the upper and lower ends of the guide alloy strip 2 and the sand bar 6; when the honing cutter is in a cutter retracting state, the height of the chamfer of the sand strip 6 is lower than that of the chamfer of the guide alloy strip 2.

The anti-collision ring 3 capable of blocking and protecting the bottom ends of the guide alloy strips 2 and the sand strips 6 is installed on the support body 5, and the anti-collision ring 3 is installed on the support body 5 through bolt holes in the bolt 1 and the support body 5. The anti-collision ring 3 can reduce the collision damage of the honing emery stick 6, the collision damage of the guide alloy stick 2, the collision damage of the workpiece and the like caused by the collision of the honing emery stick or the guide alloy stick with the workpiece, improve the starting rate of equipment, ensure the processing quality of products, reduce the cost and the work waste of cutters, and simultaneously avoid the damage of the honing cutters and the emery sticks.

As shown in fig. 2, the head body 10, the sand bar seat 7 and the support body 5 are provided with an internal air passage 12 which is communicated up and down, and the guide alloy bar 2 is provided with an air nozzle hole 18 communicated with the internal air passage 12; the head body 10 is provided with an air passage inlet 16 communicated with the built-in air passage 12. And the process hole plugs 15 are respectively arranged at the top of the built-in gas path 12 of the head body 10 section, the outer side of the built-in gas path 12 of the sand bar seat 7 section and the bottom end of the built-in gas path 12 of the support body 5 section. Preferably, the height of the nozzle holes 18 is lower than the guide alloy strip 2. The guide alloy strip 2 and the integrated air nozzle hole 18 can play a role in guiding the honing tool to enter the cylinder hole and protecting the honing sand strip 6 from being collided, the size of air pressure of the built-in air passage 12 changes along with the change of the gap between the air nozzle hole 18 and the wall of the cylinder hole, and the change of the air pressure is converted into the size change of the diameter of the cylinder hole through the air-electric converter to monitor the geometric accuracy of the cylinder hole honing processing in real time.

The cylinder hole honing tool integrating the anti-collision ring and the real-time air detection amount solves the problem that the honing tool swings to collide with and damage honing emery sticks, honing heads and cylinder hole edges by integrating the anti-collision ring on the honing tool and increasing honing emery stick chamfers, improves the starting rate of equipment, ensures the processing quality of products, reduces the cost and the work waste of the tool, and simultaneously avoids the damage of the honing tool and the emery sticks.

This honing tool is through the design that increases gas circuit and gas nozzle on honing tool, and in the honing process, the atmospheric pressure of gas circuit comes geometric dimension precision such as accurate measurement cylinder hole diameter and circularity in real time monitoring honing tool, has promoted processingquality, has guaranteed the processing stability, has reduced worker waste etc..

The expansion cone 8 is of a double-wedge structure, the upper part and the lower part of the emery stick seat 7 of the honing tool are simultaneously supported by the double-wedge structure, and the double-wedge expansion tool structure can realize the consistency of the radial expansion tool force and the radial expansion tool amount of the honing emery stick and ensure the consistency of the hole machining surface shape and stress.

The head body 10 is provided with an anti-rotation pin 14 and a locking groove 17.

The expansion tool bar 11 is provided with a compression spring 13, the lower end of the compression spring 13 is propped against the head body 10, the upper end of the compression spring 13 is propped against the expansion tool bar 11, and the compression spring 13 applies upward restoring force to the expansion tool bar 11.

The upper end and the lower end of the emery stick seat 7 are respectively provided with a groove for fixing the upper knife retracting spring 9 and the lower knife retracting spring 4, so that the emery stick seat is convenient to disassemble and maintain and reliable in structure.

The working principle is as follows: the honing connecting rod drives a honing tool to enter a cylinder hole of an engine cylinder body, then the axial movement of a cutter expanding core rod of the honing tool is driven by the axial movement of the cutter expanding core rod of the connecting rod to axially move so as to push the axial movement of an expanding cone, the axial movement of the expanding cone drives the radial movement of an emery stick seat, the emery stick on the emery stick seat moves radially and is attached to the wall of the cylinder hole, the honing tool performs reciprocating stroke and rotary movement along with the connecting rod to grind the wall of the cylinder hole, meanwhile, the air pressure in an air passage in a honing tool head body changes along with the change of a gap between an air nozzle on a guide alloy stick and the wall of the cylinder hole, and the change of the air pressure is converted into the size change of the diameter of.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims (10)

1. A cylinder hole honing tool comprises a head body (10), an abrasive bar seat (7) and a support body (5) which are sequentially connected, wherein an expansion cone (8) is arranged in the head body (10) and the abrasive bar seat (7), and an abrasive bar (6) is arranged on the abrasive bar seat (7); a tensioning cutter rod (11) is arranged in the head body (10), and the lower end of the tensioning cutter rod (11) is connected with a tensioning cone (8); the upper end and the lower end of the sand bar seat (7) are respectively provided with an upper knife retracting spring (9) and a lower knife retracting spring (4) so as to enable the sand bar seat (7) to be attached to the expanding cone body (8); the sand strip seat is characterized in that the surface of the sand strip seat (7) is provided with a guide alloy strip (2), and chamfers are arranged at the upper end and the lower end of the guide alloy strip (2) and the sand strip (6); and the support body (5) is provided with an anti-collision ring (3) which can block and protect the bottom ends of the guide alloy strips (2) and the sand strips (6).

2. The cylinder bore honing tool according to claim 1, wherein the head body (10), the emery stick seat (7) and the support body (5) are provided with built-in air passages (12) which are communicated up and down, and the guide alloy strip (2) is provided with air nozzle holes (18) which are communicated with the built-in air passages (12); the head body (10) is provided with an air path inlet (16) communicated with the built-in air path (12).

3. A bore honing tool as claimed in claim 2, wherein the height of the air nozzle bores (18) is lower than the guide alloy strip (2).

4. A cylinder bore honing tool as claimed in claim 1, wherein the height of the chamfer of the emery stick (6) is lower than the height of the chamfer of the guide alloy stick (2) in the retracted state of the honing tool.

5. A cylinder bore honing tool as claimed in claim 1, wherein said expansion cone (8) is a double wedge structure.

6. A cylinder bore honing tool as claimed in claim 1, characterized in that an anti-rotation pin (14) and a locking groove (17) are provided on the head body (10).

7. A cylinder bore honing tool as claimed in claim 1, characterized in that the anti-collision ring (3) is fixed to the support body (5) by means of bolts (1).

8. The cylinder bore honing tool as claimed in claim 1, wherein the process bore plugs (15) are provided at the top of the built-in gas passage (12) of the head body (10) section, outside the built-in gas passage (12) of the emery stick holder (7) section, and at the bottom end of the built-in gas passage (12) of the support body (5) section, respectively.

9. A cylinder bore honing tool as claimed in claim 1, wherein the expansion blade lever (11) is provided with a compression spring (13), the compression spring (13) having a lower end abutting against the head body (10) and an upper end abutting against the expansion blade lever (11), the compression spring (13) exerting an upward restoring force against the expansion blade lever (11).

10. A cylinder bore honing tool as claimed in claim 1, characterized in that the upper and lower ends of the emery stick holder (7) are provided with grooves for fixing the upper and lower retracting springs (9, 4), respectively.

Images