A honing tool with a honing stick anti-falling mechanism

Abstract

The present invention relates to the technical field of honing tools, and in particular to a honing tool with a honing bar anti-drop mechanism, comprising a honing rod and a honing bar installed in a slide groove of the honing rod, the honing rod having a honing bar anti-drop mechanism, the honing bar anti-drop mechanism comprising an anti-drop spring bar and a press-fitting part, the honing bar having a through groove or a through hole extending along the length direction thereof, the anti-drop spring bar passing through the through groove or the through hole, and the two ends of the anti-drop spring bar being press-fitted on the honing rod through a press-fitting part, the top surfaces of the anti-drop spring bar and the press-fitting part being lower than the honing cutting surface of the honing bar. The present invention has the beneficial effect that the honing bar can be reliably retracted under the elastic action of the anti-drop spring bar, and will not be thrown out or detached due to centrifugal force.

Description

Technical Field

[0001] The invention relates to the technical field of honing tools, in particular to a honing tool with a honing bar anti-falling mechanism. Background Art

[0002] When the honing tool is installed on the honing machine for honing, in order to prevent the honing strip from being partially thrown out or falling due to centrifugal force, causing collision with the workpiece or even failure to hone the part, fixed grooves are opened at both ends of the bottom plate of the honing strip of the honing tool, and rubber rings or spring rings are hooped in the fixed grooves to retract the expanded honing strips.

[0003] However, the anti-slip structure of the honing strip using rubber rings or spring rings has the following disadvantages: the structural space is large and it can only be applied to larger honing tools; in addition, since fixing grooves need to be opened at both ends of the honing strip, the structural strength of the honing strip will be affected; since fixing grooves need to be opened on the bottom plate to clamp the rubber ring or spring ring, the bottom plate of the honing strip will extend out of the honing cutting layer of the honing strip, thereby weakening the guiding effect of the sliding groove of the honing rod on the honing strip.

[0004] Therefore, the existing small honing tools of the supporting vertical honing machines do not have rubber rings or spring rings, and only rely on the self-adsorption effect of the honing bars and the tapered mandrel to prevent the honing bars from falling out. This requires very high processing accuracy, and the self-adsorption effect will be reduced or even fail due to wear after a period of use. In addition, there is still a risk of the honing bars falling out if the self-adsorption effect is relied upon alone. Summary of the invention

[0005] The technical problem to be solved by the present invention is that the existing honing strip anti-dropping structure using a rubber ring or a spring ring has a large structural space and is not suitable for small honing tools.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a honing tool with a honing bar anti-falling mechanism, comprising a honing rod and a honing bar installed in a slide groove of the honing rod, the honing rod is provided with a honing bar anti-falling mechanism, the honing bar anti-falling mechanism comprises an anti-falling spring bar and a press-fitting part, the honing bar is provided with a through groove or a through hole extending along the length direction thereof, the anti-falling spring bar passes through the through groove or the through hole, and both ends of the anti-falling spring bar are press-fitted on the honing rod through the press-fitting part, and the top surfaces of the anti-falling spring bar and the press-fitting part are lower than the honing cutting surface of the honing bar.

[0007] It is further defined that the outer surface of the honing rod is provided with a clearance groove, and the anti-dropout spring strip and the press-fitting part are arranged in the clearance groove, so that the top surfaces of the anti-dropout spring strip and the press-fitting part are lower than the outer surface of the honing rod.

[0008] It is further defined that the press-fitting part includes a pressing plate and a fixing screw, the pressing plate is fixed on the honing rod by the fixing screw, and the pressing plate is pressed above the end of the anti-dropping spring strip.

[0009] It is further defined that the bottom of the section of the displacement groove corresponding to the press-fitting part is closed for installation of the press-fitting part, and the bottom of the other sections of the displacement groove is communicated with the inner cavity of the honing rod.

[0010] It is further defined that the anti-dropping spring strip is in the form of a sheet.

[0011] It is further defined that the pressing plate has a protruding portion, and the pressing plate is pressed above the end of the anti-dropping spring strip through the protruding portion.

[0012] It is further defined that the honing stick includes a honing cutting layer and a bottom plate below the honing cutting layer, and the through groove or through hole of the honing stick is located on the bottom plate.

[0013] The beneficial effect of the present invention is that the honing strip can be reliably retracted under the elastic action of the anti-dropping spring strip and will not be thrown out or detached due to centrifugal force. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments;

[0015] Figure 1 It is a structural schematic diagram of the honing tool of the present invention;

[0016] Figure 2 yes Figure 1 AA section view;

[0017] Figure 3 yes Figure 1 BB cross-section diagram;

[0018] Figure 4 is a cross-sectional view of the honing rod;

[0019] Figure 5 It is a structural schematic diagram of the pressure plate;

[0020] Figure 6 is a cross-sectional view of a honing stick;

[0021] Figure 7 It is a perspective view of the honing tool of the present invention.

[0022] In the figure, 1. honing rod, 2. honing strip, 2-1. honing cutting layer, 2-2. base plate, 3. anti-drop spring strip, 4. press-fit part, 4-1. pressure plate, 4-2. fixing screw, 5. through hole, 6. slide groove, 7. give way groove, 8. tapered core shaft, 9. push rod, 10. connecting pin, 11. compression spring, 12. upper gasket, 13. lower gasket, 14. chip groove. DETAILED DESCRIPTION

[0023] like Figures 1 to 7As shown, a honing tool with a honing bar anti-falling mechanism comprises a honing rod 1 and a honing bar 2 installed in a slide groove 6 of the honing rod 1, the honing rod 1 is provided with a honing bar anti-falling mechanism, the honing bar anti-falling mechanism comprises an anti-falling spring bar 3 and a press-fitting part 4, the honing bar 2 is provided with a through groove or a through hole 5 extending along the length direction thereof, the anti-falling spring bar 3 passes through the through groove or the through hole 5, and both ends of the anti-falling spring bar 3 are press-fitted on the honing rod 1 through the press-fitting part 4, and the top surfaces of the anti-falling spring bar 3 and the press-fitting part 4 are lower than the honing cutting surface of the honing bar 2.

[0024] The honing stone 2 comprises a honing cutting layer 2-1 and a bottom plate 2-2 below the honing cutting layer 2-1. The through groove or through hole 5 of the honing stone 2 is located on the bottom plate 2-2. Figure 6 In the embodiment, the structure on the honing bar 2 for passing the anti-dropping spring bar 3 is a through hole 5, which is processed by wire cutting. The through hole 5 is tightly matched with the anti-dropping spring bar 3.

[0025] The anti-drop spring strip 3 is in the form of a sheet.

[0026] The press fitting 4 includes a pressing plate 4-1 and a fixing screw 4-2. The pressing plate 4-1 is fixed to the honing rod 1 by the fixing screw 4-2, and the pressing plate 4-1 is pressed above the end of the anti-dropout spring strip 3. The pressing plate 4-1 has a protruding portion, and the pressing plate 4-1 is pressed above the end of the anti-dropout spring strip 3 by the protruding portion.

[0027] The outer surface of the honing rod 1 is provided with a clearance groove 7, and the anti-dropout spring strip 3 and the press-fitting part 4 are arranged in the clearance groove 7, so that the top surfaces of the anti-dropout spring strip 3 and the press-fitting part 4 are lower than the outer surface of the honing rod 1. The bottom of the section of the clearance groove 7 corresponding to the press-fitting part 4 is closed for the installation of the press-fitting part 4, and the bottom of the other sections of the clearance groove 7 is connected with the inner cavity of the honing rod 1.

[0028] The honing tool also includes a tapered mandrel 8, a push rod 9, a connecting pin 10, a compression spring 11, an upper gasket 12 and a lower gasket 13. The push rod 9 is connected to the tapered mandrel 8 through the connecting pin 10. The front end of the tapered mandrel 8 acts on the bottom of the bottom plate 2-2 of the honing bar 2 to push the honing bar 2 to expand. The compression spring 11 is sleeved on the push rod 9 and acts between the upper gasket 12 and the lower gasket 13 respectively.

[0029] The outer surface of the honing rod 1 is also provided with axially extending chip removal grooves 14 , and the chip removal grooves 14 are located between the honing bars 2 .

[0030] When the push rod 9 drives the tapered core shaft 8 to move inward, the tapered core shaft 8 pushes the honing strip 2 to expand through the taper at the front end, and the two ends of the anti-stripping spring strip 3 are limited by the pressure plate 4-1. The expansion action of the honing strip 2 causes the anti-stripping spring strip 3 to elastically deform. During the entire honing process, the honing strip 2 is subjected to the elastic force of the anti-stripping spring strip 3 and will not be thrown out or dropped; when the inner hole of the part reaches the size requirement after honing and the honing is stopped, the compression spring 11 drives the push rod 9 to pull out the honing rod outward, and the push rod 9 drives the tapered core shaft 8 to move. The anti-stripping spring strip 3 instantly presses the honing strip 2 back due to its elasticity to avoid scratching the inner wall of the part.

Claims

1. A honing tool having a honing bar anti-drop mechanism, comprising a honing rod (1) and a honing bar (2) installed in a slide groove (6) of the honing rod (1), wherein: The honing rod (1) is provided with a honing bar anti-falling mechanism, and the honing bar anti-falling mechanism comprises an anti-falling spring bar (3) and a press-fitting part (4). The honing bar (2) has a through groove or through hole (5) extending along its length direction, the anti-slip spring bar (3) passes through the through groove or through hole (5), and both ends of the anti-slip spring bar (3) are press-fitted onto the honing rod (1) via a press-fitting piece (4), and the top surfaces of the anti-slip spring bar (3) and the press-fitting piece (4) are lower than the honing cutting surface of the honing bar (2); The outer surface of the honing rod (1) is provided with a clearance groove (7), and the anti-dropout spring strip (3) and the press-fitting part (4) are arranged in the clearance groove (7) so as to make the top surfaces of the anti-dropout spring strip (3) and the press-fitting part (4) lower than the outer surface of the honing rod (1); The honing tool with the honing bar anti-falling mechanism further comprises a tapered mandrel (8), the front end of the tapered mandrel (8) acting on the bottom of the honing bar (2) to push the honing bar (2) to expand.

2. The honing tool with the honing stick anti-falling mechanism according to claim 1 is characterized in that: The press-fitting part (4) comprises a pressing plate (4-1) and a fixing screw (4-2); the pressing plate (4-1) is fixed to the honing rod (1) via the fixing screw (4-2); and the pressing plate (4-1) is pressed above the end of the anti-drop spring strip (3).

3. The honing tool with the honing stick anti-falling mechanism according to claim 1 is characterized in that: The bottom of the section of the clearance groove (7) corresponding to the press-fitting part (4) is closed for installing the press-fitting part (4), and the bottom of the other sections of the clearance groove (7) is connected to the inner cavity of the honing rod (1).

4. The honing tool with a honing stick anti-falling mechanism according to claim 1, characterized in that: The anti-drop spring strip (3) is in the form of a sheet.

5. The honing tool with the honing stick anti-falling mechanism according to claim 2, characterized in that: The pressing plate (4-1) has a protruding portion, and the pressing plate (4-1) is pressed above the end of the anti-dropping spring strip (3) through the protruding portion.

6. The honing tool with a honing stick anti-falling mechanism according to claim 1, characterized in that: The honing bar (2) comprises a honing cutting layer (2-1) and a bottom plate (2-2) below the honing cutting layer (2-1), and the through groove or through hole (5) of the honing bar (2) is located on the bottom plate (2-2).

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