Honing bar rounding device for air cylinder

Abstract

The utility model provides a honing bar rounding device for an air cylinder, which comprises a connecting sleeve and an adjusting screw, one end of the connecting sleeve is separably sleeved on the outer side of a honing frame in a honing head, the adjusting screw is arranged at the other end of the connecting sleeve, and the adjusting screw is separably abutted against a mandrel of the honing head; one end of the centering sleeve is connected with the connecting sleeve, and the other end of the centering sleeve is connected with a main shaft of the honing machine; a limiting clamping groove used for locking a limiting pin in the mandrel is formed in the inner side of one end of the connecting sleeve, and a locking assembly used for locking the honing frame is further arranged at one end of the connecting sleeve. According to the honing bar rounding device for the air cylinder, the adjusting screw of the device abuts against the mandrel of the honing head, so that the honing bar is expanded, honing and rounding are carried out on the honing bar, the honing bar does not need to be installed on a special clamp for rounding, installation errors caused by the fact that the honing bar is installed on a honing frame after rounding are avoided, rounding efficiency is higher, and the honing bar rounding device is suitable for popularization and application. The precision is better, and the rounding efficiency of the honing strip is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of honing processing, in particular to a honing strip circularizing device for a cylinder. Background Art

[0002] Honing is a method of machining the inner surface of a workpiece with honing strips embedded in a honing head. During honing, the workpiece is installed on the workbench or fixture of a honing machine. The honing head is floatingly connected to the spindle of the honing machine. By squeezing the adjusting cone of the honing head by the spindle, the honing strips expand and contact the inner wall of the cylinder block. Then, the spindle of the machine tool drives the rotation and makes an axial reciprocating motion. The honing strips contact the cylinder bore wall with a certain pressure, and a very thin layer of metal can be cut off to complete the finishing process. Since the honing processing has high precision, before the process of using honing to machine a cylinder, new honing strips or worn honing strips need to be installed on a special fixture, inserted into the grinding tool for circularizing, so that the heights of the honing strips are the same. After circularizing, the honing strips are installed on the honing frame and finally installed on the honing machine for use.

[0003] However, when the existing honing strips for cylinders are circularized on a fixture and then installed on a honing frame for use, the honing accuracy is often poor due to installation errors, so the honing strips need to be repeatedly ground and circularized, and the efficiency of circularizing the honing strips is low. This solution addresses this technical problem. Summary of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides a honing strip circularizing device for a cylinder. By the adjusting screw of the device abutting against the mandrel of the honing head, the honing strips are expanded, so as to facilitate the circularizing of the honing strips. The connecting sleeve is connected to the honing machine through the centering sleeve, and then the honing strips are circularized by honing. The honing strips do not need to be installed on a special fixture for circularizing, avoiding the installation errors caused by installing on the honing frame after circularizing, with higher circularizing efficiency, better accuracy, and improved circularizing efficiency of the honing strips.

[0005] To achieve the above object, the technical solution adopted by the utility model is: a honing strip circularizing device for a cylinder, including a connecting sleeve detachably sleeved on the outside of a honing frame in a honing head at one end, and an adjusting screw arranged at the other end of the connecting sleeve, the adjusting screw detachably abutting against the mandrel of the honing head;

[0006] It further includes a centering sleeve connected to the connecting sleeve at one end, and the other end of the centering sleeve is connected to the spindle of the honing machine;

[0007] A limit card slot for locking a limit pin in the mandrel is arranged on the inner side of one end of the connecting sleeve, and a locking assembly for locking the honing frame is arranged at one end of the connecting sleeve, and honing strips are arranged on the honing frame.

[0008] One end inside of the connecting sleeve is conical, an external thread is arranged on the outer side of the connecting sleeve, the locking assembly includes an elastic conical sleeve arranged inside one end side of the connecting sleeve, and a locking nut sleeve sleeved on the outer side of the connecting sleeve. A convex platform abutting against the elastic conical sleeve is arranged inside one end of the locking nut sleeve.

[0009] A plurality of screw holes are arrayed and opened on the side part of the connecting sleeve, through holes are arranged at corresponding positions on the side part of the centering sleeve, and the centering sleeve and the connecting sleeve are connected by locking screws sequentially penetrating through the through holes and the screw holes.

[0010] A through groove allowing the limit pin to pass through is opened inside the elastic conical sleeve.

[0011] A conical surface is arranged on the outer side of the connecting sleeve, the screw holes are opened on the conical surface of the connecting sleeve, a conical surface corresponding to the outer side of the connecting sleeve is arranged inside one end of the centering sleeve, and the through holes are opened on the conical surface of the centering sleeve.

[0012] An adjusting seat is arranged at the other end of the connecting sleeve, internal threads are arranged inside the adjusting seat, and the adjusting screw is in threaded connection with the adjusting seat.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] (1) By the adjusting screw of the device abutting against the mandrel of the honing bar, the honing strip is expanded, so as to facilitate the circularity of the honing strip. The connecting sleeve is connected to the honing machine through the centering sleeve, and then the honing strip is honed and circularized. The honing strip does not need to be installed on a special fixture for circularization, avoiding the installation error caused by reinstalling it on the honing rack after circularization. The circularization efficiency is higher, the precision is better, and the circularization efficiency of the honing strip is improved;

[0015] (2) Through the arrangement of the elastic conical sleeve, when the locking nut sleeve is screwed, by the extrusion of the locking nut sleeve on the elastic conical sleeve, the connection between the honing rack and the connecting sleeve is more stable and reliable, and the circularization precision of the honing strip is further improved;

[0016] (3) Through the arrangement of the adjusting seat, the adjusting seat is in threaded connection with the connecting sleeve. By the adjusting seat, the adjusting range of the adjusting screw is increased, so that the circularization device has stronger adaptability to the honing rack and the applicability of the circularization device is improved. Description of the Drawings

[0017] Figure 1 is the structural decomposition schematic Figure 1 ;

[0018] Figure 2 is the structural decomposition schematic Figure 2;

[0019] Figure 3 is the schematic cross-sectional structure of the present utility model Figure 1 ;

[0020] Figure 4 is the schematic structure of the meat part of the present utility model Figure 2 .

[0021] Among them, in the figure: 1. Adjusting screw; 2. Adjusting seat; 3. Connecting sleeve; 31. Limiting card slot; 32. Screw hole; 4. Centering sleeve; 41. Through hole; 5. Locking screw; 6. Elastic cone sleeve; 61. Through groove; 7. Locking nut; 71. Boss; 8. Honing head; 81. Honing frame; 82. Mandrel; 821. Limiting pin; 9. Honing strip. Specific embodiments

[0022] In order to more clearly illustrate the technical features of the present solution, the present solution will be described below through specific embodiments.

[0023] See Figures 1 - 4 , a honing strip circularity device for a cylinder, including a connecting sleeve 3 sleeved on the outside of the honing frame 81 in the honing head 8 that can be separated at one end, and an adjusting screw 1 arranged at the other end of the connecting sleeve 3, and the adjusting screw 1 is detachably abutted against the mandrel 82 of the honing head 8;

[0024] It also includes a centering sleeve 4 connected to the connecting sleeve 3 at one end. See Figure 1 , a pin shaft adapted to the honing machine is arranged at the other end of the centering sleeve 4, and the centering sleeve is connected to the main shaft of the honing machine through the pin shaft;

[0025] A limiting card slot 31 for locking the limiting pin 821 in the mandrel 82 is opened on the inner side of one end of the connecting sleeve 3. A locking assembly for locking the honing frame 81 is also arranged at one end of the connecting sleeve 3. A honing strip 9 is arranged on the honing frame 81. Among them, the size of the limiting card slot 31 is slightly larger than the size of the mandrel 82, that is, the mandrel 82 and the limiting card slot 31 are in clearance fit to prevent the mandrel 82 from coming out, and the mandrel 82 can move within a small range in the limiting card slot 31.

[0026] The inner side of one end of the connecting sleeve 3 is conical, and an external thread is arranged on the outside of the connecting sleeve 3. The locking assembly includes an elastic cone sleeve 6 arranged on the inner side of one end of the connecting sleeve 3 and a locking nut 7 sleeved on the outside of the connecting sleeve. A boss 71 abutting against the elastic cone sleeve 6 is arranged on the inner side of one end of the locking nut 7.

[0027] A plurality of screw holes 32 are arranged in an array on the side of the connecting sleeve 3, through holes 41 are arranged at corresponding positions on the side of the centering sleeve 4, and the centering sleeve 4 and the connecting sleeve 3 are connected by locking screws 5 sequentially passing through the through holes 41 and the screw holes 32.

[0028] A through groove 61 allowing the limit pin 821 to pass through is provided on the inner side of the elastic cone sleeve 6, and the elastic cone sleeve 6 enables a flexible connection effect between the mandrel 82 and the limit card slot 31.

[0029] A tapered surface is provided on the outer side of the connecting sleeve 3, a threaded hole 32 is opened on the tapered surface of the connecting sleeve 3, a tapered surface corresponding to the outer side of the connecting sleeve 3 is provided at a corresponding position on the inner side of one end of the centering sleeve 4, and a through hole is opened on the tapered surface of the centering sleeve 4.

[0030] The other end of the connecting sleeve 3 is provided with an adjusting seat 2, an internal thread is provided on the inner side of the adjusting seat 2, the adjusting screw 1 is threadedly connected with the adjusting seat 2, an external thread is provided on the outer side of the adjusting seat 2, and the adjusting seat 2 is connected to the connecting sleeve 3 through the external thread.

[0031] The specific working process of the present utility model:

[0032] After passing the limit pin 821 of the honing head 8 through the through groove 61 of the elastic cone sleeve 6, it is clamped on the connecting sleeve 3 through the limit card slot 31, and then the locking nut 7 is screwed onto the connecting sleeve 3. The elastic cone sleeve 6 is squeezed by the boss 71 of the locking nut 7, and then the elastic cone sleeve 6 is squeezed into the connecting sleeve 3 and the honing frame 81 bracket, further limiting the honing frame 81. Since the size of the limit card slot 31 is slightly larger than the size of the mandrel 82, the mandrel 82 can move within the limit card slot 31. The elastic cone sleeve 6 is used to flexibly restrain and limit the honing frame 81, enabling the honing frame 81 to be movable relative to the centering sleeve 4, avoiding the concentrated stress on the honing strip 9 during honing and roundness correction in the old cylinder block with roundness deviation;

[0033] The adjusting screw 1 is screwed, and after the adjusting screw 1 is screwed into the connecting sleeve 3 for a certain length, it abuts against the mandrel 82 of the honing frame 81. Continuing to screw the adjusting screw 1, the honing strip 9 is expanded through the mandrel 82;

[0034] The centering sleeve 4 is sleeved on the outer side of the connecting sleeve 3, and the centering sleeve 4 is firmly connected to the connecting sleeve through the locking screw 5. Finally, the centering sleeve 4 is connected to the honing machine to complete the installation of the roundness correction device. Finally, the honing head 8 is inserted into the old cylinder block, and the honing strip 9 is honed and roundness corrected through the repeated movement of the honing machine. After the roundness correction is completed, the honing head 8 is withdrawn from the old cylinder block, the centering sleeve 4 is removed from the honing machine, the locking screw 5 and the adjusting screw 1 are loosened in sequence, and finally the locking nut 7 is loosened, and the honing frame 81 is removed from the connecting sleeve 3. At this time, the honing strip 9 that has been roundness corrected can be used normally together with the honing frame 81 for honing the new cylinder block.

[0035] Wherein, the above-mentioned old cylinder block is a waste cylinder block, and the specifications of the old cylinder block are the same as those of the new cylinder block to be honed by the honing strip 9. The honing strip 9 is honed and roundness corrected by the old cylinder block. On the one hand, there is no need to use a special grinding tool for honing. On the other hand, the old cylinder block is reused, reducing the honing cost of the honing strip 9 and promoting the recycling of the old cylinder block.

[0036] The adjusting screw 1 of the device abuts against the mandrel 82 of the honing strip 9, thereby expanding the honing strip 9 to facilitate the roundness correction of the honing strip 9. The connecting sleeve 3 is connected to the honing machine through the centering sleeve 4, and then the honing strip 9 is honed and roundness corrected. The honing strip 9 does not need to be installed on a special fixture for roundness correction, avoiding the installation error caused by reinstalling it on the honing frame 81 after roundness correction. The efficiency of roundness correction is higher and the accuracy is better, improving the roundness correction efficiency of the honing strip 9;

[0037] Through the setting of the elastic cone sleeve 6, when the locking nut 7 is screwed, the elastic cone sleeve 6 is extruded by the locking nut 7, making the connection between the honing frame 81 and the connecting sleeve 3 more stable and reliable, and further improving the roundness correction accuracy of the honing strip 9;

[0038] Through the setting of the adjusting seat 2, the adjusting seat 2 is threadedly connected to the connecting sleeve 3. The adjusting range of the adjusting screw 1 is increased through the adjusting seat 2, making the roundness correction device more adaptable to the honing frame 81 and improving the applicability of the roundness correction device.

[0039] Note: The honing head 8 is prior art, and expanding the honing strip 9 on the honing frame 81 through the mandrel 82 is prior art, which will not be elaborated here.

[0040] The technical features not described in the present utility model can be achieved by or adopted from prior art and will not be elaborated here. Of course, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above examples. Changes, modifications, additions or substitutions made by those of ordinary skill in the art within the essence of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A cylinder honing rod gauge device, characterized in that: It comprises a connecting sleeve (3) with one end detachably sleeved on the outside of a honing frame (81) in a honing head (8), and an adjusting screw (1) arranged at the other end of the connecting sleeve (3), wherein the adjusting screw (1) is detachably abutted against a core shaft (82) of the honing head (8); It also includes a centering sleeve (4) having one end connected to the connecting sleeve (3), and the other end of the centering sleeve (4) is connected to the main shaft of the honing machine; A limiting groove (31) for locking a limiting pin (821) in the spindle (82) is provided on the inner side of one end of the connecting sleeve (3), and a locking assembly for locking the honing frame (81) is also provided on one end of the connecting sleeve (3), and a honing bar (9) is provided on the honing frame (81).

2. The cylinder honing rod gauge device according to claim 1, characterized in that: The inner side of one end of the connecting sleeve (3) is tapered, and the outer side of the connecting sleeve (3) is provided with an external thread. The locking assembly comprises an elastic cone sleeve (6) arranged inside one end of the connecting sleeve (3), and a locking screw sleeve (7) sleeved on the outer side of the connecting sleeve. The inner side of one end of the locking screw sleeve (7) is provided with a boss (71) abutting against the elastic cone sleeve (6).

3. The cylinder honing rod gauge device according to claim 2, characterized in that: A plurality of screw holes (32) are arranged in an array on the side of the connecting sleeve (3), and a through hole (41) is arranged at a corresponding position on the side of the centering sleeve (4). The centering sleeve (4) and the connecting sleeve (3) are connected by means of locking screws (5) which are inserted into the through holes (41) and the screw holes (32) in sequence.

4. The cylinder honing rod gauge device according to claim 2, characterized in that: A through slot (61) is provided on the inner side of the elastic cone sleeve (6) to allow the limiting pin (821) to pass through.

5. The cylinder honing rod gauge device according to claim 3, characterized in that: The outer side of the connecting sleeve (3) is provided with a conical surface, the screw hole (32) is opened on the conical surface of the connecting sleeve (3), a conical surface corresponding to the outer side of the connecting sleeve (3) is provided at a corresponding position on the inner side of one end of the centering sleeve (4), and the through hole is opened on the conical surface of the centering sleeve (4).

6. The cylinder honing rod gauge device according to claim 1, characterized in that: The other end of the connecting sleeve (3) is provided with an adjustment seat (2), the inner side of the adjustment seat (2) is provided with an internal thread, and the adjustment screw (1) is threadedly connected to the adjustment seat (2).

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