Ring saw

Abstract

The utility model discloses a trephine, which comprises a holding part for an operator to hold; the annular saw blade is rotationally arranged on the holding part; the driving wheel is arranged on the holding part and is connected with the power source; the driving wheel is in contact connection with an inner hole of the annular saw blade, and power transmission of the driving wheel to the annular saw blade is achieved through relative damping force between the driving wheel and the inner hole of the annular saw blade during contact. According to the trephine, transmission between the driving wheel and the annular saw blade is achieved in a contact damping mode, fine adjustment of the center distance can be conducted after the driving wheel is abraded through the transmission mode, and therefore transmission efficiency is recovered, use efficiency of the trephine is improved, and use cost of the trephine after parts are abraded is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric tool technical field especially a ring saw. BACKGROUND

[0002] The ring saw is a kind of eccentric driving circular saw, drives the whole annular saw blade rotation by setting the driving structure in the position of the center axis eccentricity of annular saw blade, to reach the purpose of cutting, simultaneously, driving structure deviates the center axis of annular saw blade also increases the cutting depth of ring saw.

[0003] The existing ring saw sets annular internal tooth in the inner circle of annular saw blade, and the gear in driving structure is matched to carry out gear meshing type transmission to annular saw blade, to reach the rotation cutting effect of annular saw blade when ring saw works, however, the ring saw of gear transmission has the following shortcomings and deficiencies:

[0004] When driving gear and annular saw blade internal tooth meshing transmission, because the working pressure of ring saw is larger, it can cause great wear to gear and internal tooth, at this time, transmission gap will appear after gear wear, thereby reducing the transmission efficiency of ring saw, even the phenomenon of slippage between driving gear and annular saw blade appears;

[0005] After the gap appears in the above-mentioned gear transmission, because the center distance in gear transmission usually needs to keep constant, therefore only the replacement type adjustment of replacing saw blade or replacing gear can be adopted, leading to the substantial increase of use cost, and the adjustment also needs to consume more labor cost and time cost. INVENTION CONTENTS

[0006] The utility model provides a kind of ring saw in the prior art for the deficiency.

[0007] To solve the above technical problems, the utility model is solved by the following technical scheme: a kind of ring saw, comprising

[0008] Gripping portion for operator to hold;

[0009] Annular saw blade, rotation is set on the gripping portion;And

[0010] Driving wheel is set on the gripping portion and is connected with power source;

[0011] The driving wheel and annular saw blade inner ring surface contact connection, the relative damping force between driving wheel and annular saw blade inner hole is realized when contact to realize the power transmission of driving wheel to annular saw blade.

[0012] In the above scheme, preferably, the mounting portion is fixed on the gripping portion, and the annular saw blade inner ring surface rotation is set on the mounting portion.

[0013] Preferably, the mounting portion is provided with a plurality of guide wheels, and the inner ring surface of the ring saw blade is guided by the guide wheels to realize the circumferential movement relative to the mounting portion.

[0014] Preferably, the mounting portion comprises a base plate and auxiliary plates arranged on both sides of the base plate, and the ring saw blade is arranged on the base plate and the two side end surfaces are covered by the outer edges of the auxiliary plates.

[0015] Preferably, the driving wheel is provided with a driving groove, and the inner ring wall of the ring saw blade is in contact with the driving groove.

[0016] Preferably, the inner hole wall of the ring saw blade is provided with a driving surface in contact with the driving groove.

[0017] Preferably, the driving groove is a V-shaped groove, and the two sides of the inner ring surface of the ring saw blade are provided with inclined surfaces matched with the V-shaped groove.

[0018] Preferably, an adjusting portion is arranged between the mounting portion and the holding portion to adjust the contact distance between the ring saw blade and the driving wheel.

[0019] Preferably, the adjusting portion comprises adjusting grooves symmetrically arranged on the mounting portion and guide blocks fixedly arranged on the holding portion and matched with the adjusting grooves, and the mounting portion is guided to slide relative to the guide blocks through the adjusting grooves to adjust the contact distance between the inner hole wall of the ring saw blade and the driving wheel.

[0020] Preferably, the adjusting portion comprises adjusting blocks fixedly arranged on the mounting portion, guide grooves matched with the adjusting blocks arranged on the holding portion, and adjusting rods connected with the adjusting blocks.

[0021] The utility model discloses a kind of through contact damping mode between driving wheel and ring saw blade Realize transmission, the transmission mode can be fine-tuned between center distance after driving wheel wear, to restore transmission efficiency, improve the use efficiency of ring saw, reduce the use cost of ring saw after component wear. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the front view structural schematic diagram of the utility model.

[0023] Figure 2 It is the sectional view structural schematic diagram of the utility model.

[0024] Figure 3 It is the utility model Figure 2 Local enlarged view in A of the utility model.

[0025] Figure 4The utility model discloses a decomposition structure schematic view. DETAILED DESCRIPTION

[0026] The utility model will be described in further detail in connection with the drawings and specific implementation: refer to Figures 1-4 .

[0027] A ring saw, including holding portion 1, the holding portion 1 is held for operating personnel, is provided with power source on it, is used to drive ring saw work.

[0028] Driving wheel 3 is equipped on the holding portion 1, the driving wheel 3 is connected with power source, and the cutting work of ring saw is realized through the rotation of driving wheel 3;Rotatably provided with annular saw blade 2 matched with driving wheel 3 on the holding portion 1, the inner ring surface of annular saw blade 2 is contact type connection with driving wheel 3, and the relative damping force between driving wheel 3 and the inner ring surface of annular saw blade 2 is realized when contacting to realize the power transmission of driving wheel 3 to annular saw blade 2.

[0029] Driving groove 301 is equipped on the driving wheel 3, and the inner ring wall of annular saw blade 2 is clamped in driving groove 301, and the two side end surfaces of the inner ring wall are contact connection with the two side groove walls of driving groove 301;The diameter of driving wheel 3 is much smaller than the inner ring hole diameter of annular saw blade 2, so that after annular saw blade 2 is installed on the holding portion 1, driving wheel 3 is eccentrically installed relative to the center of annular saw blade 2, to ensure the cutting depth of annular saw blade 2.

[0030] The driving groove 301 is V-shaped groove, and the driving surface 203 matched with the driving groove 301 is arranged on the inner hole wall of the annular saw blade 2;Specifically, the two side walls of the inner ring hole of the annular saw blade 2 are provided with inclined surfaces matched with the V-shaped groove, as shown in Figure 3 Thus, after the driving groove 301 is matched with the annular saw blade 2, the contact area between the annular saw blade 2 and the driving wheel 3 is increased through the cooperation of the V-shaped groove and the inclined surface, and the transmission efficiency is improved.

[0031] The mounting portion 101 is fixedly arranged on the holding portion 1, and the mounting portion 101 adopts an adjusting and fixing mode, that is, the mounting portion 101 can realize relative adjustment of the holding portion 1, and is fastened after adjustment to meet the installation requirements;The inner ring surface of the annular saw blade 2 is rotatably arranged on the mounting portion 101, so that the annular saw blade 2 can realize synchronous adjustment and fixation relative to the holding portion 1 through the mounting portion 101, that is, the annular saw blade 2 can realize center distance adjustment relative to the driving wheel 3, and when the inner ring surface of the annular saw blade 2 or the driving groove 301 of the driving wheel 3 is worn and the transmission efficiency is reduced, the driving wheel 3 and the annular saw blade 2 can be reconnected through adjusting the position of the mounting portion 101 to improve the transmission efficiency.

[0032] The mounting part 101 includes a base plate 201 and auxiliary plates 202 arranged on both sides of the base plate 201. The plates are arranged in a sandwiched state after being overlapped and mounted. The outer edges of the base plate 201 and the auxiliary plates 202 are circular, so that the plates are in a circular thick plate state after being mounted. A plurality of guide wheels 102 are uniformly arranged on the circumference of the mounting part 101. In this embodiment, four groups of guide wheels are arranged as an example, which are uniformly distributed around the center of the mounting part 101. The diameter of the auxiliary plate 202 is greater than that of the base plate 201. The guide wheels 102 are rotatably arranged between the auxiliary plates 202 on both sides. The rotation shafts of the guide wheels 102 can be arranged on the auxiliary plates 202.

[0033] The base plate 201 is provided with a hollow groove for the rotation of the guide wheels 102. The guide wheels 102 are in the same plane as the neutral plane of the base plate 201. The inner ring surface of the annular saw blade 2 is connected to the guide wheels 102 in a contact manner and is mounted on the base plate 201. After the annular saw blade 2 is mounted on the mounting part 101, the end faces on both sides of the inner ring surface are covered by the auxiliary plates 202 on both sides of the mounting part 101, so that the annular saw blade 2 is positioned from the radial and axial directions, and the relative rotation between the annular saw blade 2 and the mounting part 101 is realized.

[0034] The mounting part 101 is provided with an opening 5 for the driving wheel 3 to pass through. The base plate 201 and the auxiliary plates 202 are provided with the opening 5 for the driving wheel 3 to pass through, which is arranged in a penetrating manner. The guide wheels 102 are arranged to avoid the opening 5, that is, as shown in Figure 1 and Figure 4 The opening 5 forms a through gap after the base plate 201 and the auxiliary plates 202 are mounted, which is used for the driving wheel 3 to pass through and adjust. After the annular saw blade 2 is mounted on the mounting part 101, the rotation of the annular saw blade 2 relative to the mounting part 101 is realized through the cooperation of the driving wheel 3 and the inner ring surface of the annular saw blade 2. The annular saw blade 2 is rotated to cut the material.

[0035] The auxiliary plate 202 is mounted after the annular saw blade 2 is mounted on the guide wheels 102 in the same neutral plane as the base plate 201. The annular saw blade 2 is provided with a sink that cooperates with the auxiliary plate 202. When the auxiliary plate 202 cooperates with the side surface of the annular saw blade 2, it is placed in the sink, so that the outer end surface of the auxiliary plate 202 is lower than the outer end surface of the annular saw blade 2, or is flush with the end surface of the annular saw blade 2, so as not to affect the passability of the annular saw in the material during cutting.

[0036] An adjusting part 4 is arranged between the mounting part 101 and the holding part 1, which is used to adjust the contact distance between the annular saw blade 2 and the driving wheel 3. The adjusting part 4 includes adjusting grooves 401 symmetrically arranged on the mounting part 101 and guide blocks 402 fixedly arranged on the holding part 1 and matched with the adjusting grooves 401, as shown in Figure 1 and Figure 4As shown, in this embodiment, the symmetrical adjusting groove 401 is set as an example, which is a long groove, and the guide block 402 is a long strip-shaped protrusion matched with the adjusting groove 401, the two side end faces of which are attached to the two side groove faces of the adjusting groove 401, so that the mounting part 101 is vertically slid relative to the holding part 1.

[0037] The adjusting groove 401 is provided on both the substrate 201 and the auxiliary plate 202, so that when the substrate 201 and the auxiliary plate 202 are assembled into the mounting part 101, the adjusting groove 401 is provided through the mounting part 101.

[0038] The mounting part 101 is guided and slid relative to the guide block 402 through the adjusting groove 401 to adjust the contact distance between the inner hole wall of the annular saw blade 2 and the driving wheel 3; the adjusting part 4 further comprises an adjusting block 403 fixed on the mounting part 101, the holding part 1 is provided with a guide groove 404 matched with the adjusting block 403, and the guide direction of the guide groove 404 is the same as the adjusting direction of the adjusting groove 401.

[0039] The holding part 1 is provided with an adjusting rod 405 connected with the adjusting block 403, the adjusting rod 405 is a screw rod, the threaded end of which is provided through the wall of the holding part 1 and matched with the threaded hole on the adjusting block 403, the adjusting block 403 is guided and slid on the guide groove 404, and the vertical guide sliding of the adjusting block 403 relative to the holding part 1 is realized through the threaded matching of the adjusting rod 405 and the adjusting block 403, so that the relative position adjustment between the annular saw blade 2 on the mounting part 101 and the driving wheel 3 is realized.

[0040] In this embodiment, in order to realize the re-fixing of the mounting part 101 relative to the holding part 1 after the distance adjustment, the holding part 1 is provided with a fixing bolt hole, and the mounting part 101 is provided with a bolt through groove 406 matched with the bolt hole, the setting direction of the bolt through groove 406 is the same as the direction of the adjusting groove 401, that is, the bolt through groove 406 is parallelly arranged with the adjusting groove 401, and the number of the bolt through groove 406 can be adaptively adjusted according to the size (outer circle size) of the annular saw blade 2.

[0041] The bolt through groove 406 is provided through the substrate 201 and the auxiliary plate 202, so that when the substrate 201 and the auxiliary plate 202 constitute the mounting part 101, the bolt through groove 406 is also provided through the mounting part 101, the fastening bolt of the mounting part 101 is provided through the bolt through groove 406 and is threadedly connected with the fixing bolt hole on the holding part 1, and after the fastening bolt is tightened with the fixing bolt hole, the bolt compresses the mounting part 101, so that the mounting part 101 is fixed on the holding part 1; after the fixing bolt hole is loosened, the mounting part 101 can be adjusted in displacement along the direction of the bolt through groove 406, that is, the mounting part 101 is reciprocally adjusted in displacement along the direction of the adjusting groove 401, so that the fixing and adjustment functions of the mounting part 101 relative to the holding part 1 are realized.

[0042] Using the method of the ring saw as described above: the auxiliary plate 202, the base plate 201 and the guide wheel 102 are assembled, when assembled, the inner ring surface of the ring saw blade 2 is pre-assembled on the guide wheel 102 and is in contact with the wheel wall of the guide wheel 102, then the above-mentioned plate members are fixed to form the mounting portion 101, the ring saw blade 2 is relatively installed to the mounting portion 101 through the cooperation of the inner ring surface and the guide wheel 102;

[0043] The adjusting groove 401 of the mounting portion 101 is matched with the guide block 402 of the holding portion 1, at the same time, the driving groove 301 of the driving wheel 3 is in contact with the inner ring surface of the ring saw blade 2, the center distance between the ring saw blade 2 and the driving wheel 3 on the mounting portion 101 is adjusted through the adjusting rod 405, so as to adjust the contact pressure and the resistance, after the adjustment is completed, the mounting portion 101 is fixed, after the mounting portion 101 is fixed on the holding portion 1, it can be used.

[0044] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A ring saw characterised in that: The utility model relates to a kind of ring saws, including Grip (1) for operator to hold; Annular saw blade (2) is rotationally arranged on the grip (1); And Driving wheel (3) is arranged on the grip (1) and is connected with power source; The driving wheel (3) is contacted with the inner ring surface of annular saw blade (2), and the relative damping force between the driving wheel (3) and the inner ring surface of annular saw blade (2) is used to realize the power transmission of the driving wheel (3) to annular saw blade (2).

2. A ring saw according to claim 1, characterized in that: The grip (1) is fixed with mounting portion (101), and the inner ring surface of annular saw blade (2) is rotationally arranged on mounting portion (101).

3. A ring saw according to claim 2, characterised in that: The mounting portion (101) is rotationally provided with a plurality of guide wheels (102), and the inner ring surface of annular saw blade (2) is guided by guide wheel (102) to realize its circumferential motion relative to mounting portion (101).

4. A ring saw according to claim 2, characterised in that: The mounting portion (101) includes a base plate (201) and an auxiliary plate (202) arranged on both sides of the base plate (201), and the annular saw blade (2) is rotationally arranged on the base plate (201) and the both side end surfaces are covered by the outer edge of the auxiliary plate (202).

5. A ring saw according to any one of claims 1-4, characterized in that: The driving wheel (3) is provided with a driving groove (301), and the inner ring wall of the annular saw blade (2) is in contact with the driving groove (301).

6. A ring saw according to claim 5, characterised in that: The inner hole wall of the annular saw blade (2) is provided with a driving surface (203) in contact with the driving groove (301).

7. A ring saw according to claim 5, characterised in that: The driving groove (301) is a V-shaped groove, and the both sides of the inner ring surface of the annular saw blade (2) are provided with inclined surfaces matched with the V-shaped groove.

8. A ring saw according to claim 2, characterised in that: The mounting portion (101) and the grip (1) are provided with an adjusting portion (4) for adjusting the contact distance between the annular saw blade (2) and the driving wheel (3).

9. A ring saw according to claim 8, characterised in that: The adjusting portion (4) includes an adjusting groove (401) symmetrically arranged on the mounting portion (101) and a guide block (402) fixedly arranged on the grip (1) and matched with the adjusting groove (401), and the mounting portion (101) is guided and slid relative to the guide block (402) through the adjusting groove (401) to adjust the contact distance between the inner hole wall of the annular saw blade (2) and the driving wheel (3).

10. A ring saw according to claim 9, characterised in that: The adjusting portion (4) includes an adjusting block (403) fixedly arranged on the mounting portion (101), and the grip (1) is provided with a guide groove (404) matched with the adjusting block (403), and the grip (1) is provided with an adjusting rod (405) connected with the adjusting block (403).

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