Direct-drive trephine machine

Abstract

The utility model relates to a direct drive type trephine machine which comprises a machine body, a saw blade retaining mechanism arranged at the front end of the machine body and an annular saw blade rotatably arranged on the saw blade retaining mechanism, and the annular saw blade comprises a first annular side face and a second annular side face which are oppositely arranged. The saw blade holding mechanism comprises a driving wheel in contact fit with the first annular side face and an auxiliary wheel in contact fit with the second annular side face, a motor is arranged in the machine body and comprises a motor shaft, the driving wheel and the motor shaft are coaxially arranged, and the driving wheel is connected with the front end of the motor shaft. The trephine machine adopts a direct-drive structure, so that the trephine machine has the advantages of simple structure, low manufacturing and maintenance cost, high driving efficiency, low failure rate and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric tool technical field especially is a kind of direct drive type ring saw machine. BACKGROUND

[0002] Chinese utility model patent CN206254338U discloses ring saw machine, containing a handle, the front end of handle is connected with a driving source, the front end of driving source is connected with a driving wheel, the driving wheel is clamped in the inner ring surface of a ring saw blade, so that the driving wheel can be driven by driving source and rotate, and simultaneously drive ring saw blade to rotate in the process of rotation. In the structure, since the axis of driving wheel is perpendicular to the axis of driving source, a gear reversing transmission mechanism needs to be arranged between driving source and driving wheel, so that the rotary motion of driving source can be transmitted to driving wheel, and then drive ring saw blade to rotate. In this way, not only the complexity of structure is increased, but also the driving efficiency of driving source is affected, and the manufacturing cost and maintenance cost of machine are also increased. Therefore, relevant practitioners need to make improvements. SUMMARY

[0003] The utility model aims at providing a kind of direct drive type ring saw machine with high driving efficiency, simple structure, low manufacturing and maintenance cost.

[0004] The utility model is realized by the following technical scheme:

[0005] A kind of direct drive type ring saw machine, including body, the saw blade holding mechanism of the front end of body and the ring saw blade of rotatablely being set in saw blade holding mechanism, the ring saw blade includes the first annular side and the second annular side of oppositely arranged, the saw blade holding mechanism includes the driving wheel of contact cooperation with the first annular side and the auxiliary wheel of contact cooperation with the second annular side, motor is equipped in the body, the motor includes motor shaft, the driving wheel is coaxial with motor shaft and the front end of motor shaft is connected with the driving wheel.

[0006] Further, the first annular side has at least one annular groove arranged along its circumferential direction, the outer circular surface of the driving wheel has at least one annular protrusion arranged along its circumferential direction, the annular protrusion is embedded in the corresponding annular groove and is in contact with it.

[0007] Further, the second annular side is a plane structure, the outer circular surface of the auxiliary wheel has a plurality of annular bosses arranged along its axial direction, each annular boss is in contact with the second annular side.

[0008] Further, the saw blade holding mechanism further comprises a head shell main body fixedly connected with the front end of the machine body, the driving wheel is arranged in the head shell main body, and a bearing is arranged in the head shell main body and located on the side of the driving wheel facing the motor; the front end of the motor shaft penetrates through the bearing and is connected with the driving wheel.

[0009] Further, the saw blade holding mechanism further comprises a head shell cover body covering the side of the head shell main body facing the annular saw blade; the auxiliary wheel is arranged in the head shell cover body, and a saw blade slot for allowing the annular saw blade to move through is formed between the head shell main body and the head shell cover body.

[0010] Further, the head shell cover body is provided with an auxiliary wheel position adjusting mechanism, the auxiliary wheel position adjusting mechanism comprises an auxiliary wheel mounting seat and an adjusting screw; the auxiliary wheel mounting seat is arranged in the head shell cover body, and the auxiliary wheel is rotatably mounted on the auxiliary wheel mounting seat; one end of the adjusting screw is threadedly connected with the auxiliary wheel mounting seat, and the other end of the adjusting screw is exposed outside the head shell cover body and is connected with a knob; the rotation of the knob can drive the auxiliary wheel mounting seat to move towards the first annular side or away from the first annular side, so that the auxiliary wheel moves towards the second annular side or away from the second annular side.

[0011] Further, the annular saw blade further comprises an inner ring surface defining a central through hole; and a cavity is further formed between the head shell main body and the head shell cover body; two guide wheels in contact with the inner ring surface are symmetrically arranged in the cavity.

[0012] Further, the head shell cover body and the head shell main body are detachably fixedly connected through the screw.

[0013] Further, the motor shaft is a long shaft structure integrally formed, or the motor shaft is a long shaft structure formed by splicing two or more short shafts.

[0014] Further, the motor is arranged in the front part of the machine body.

[0015] The utility model has the advantages of the following beneficial effects:

[0016] The ring sawing machine adopts a direct drive structure, specifically, the driving wheel is mounted at the front end of the motor shaft and is in contact with the first annular side of the annular saw blade; during operation, the rotary motion of the motor shaft directly drives the driving wheel to rotate and promotes the annular saw blade to perform rotary cutting motion; compared with the prior art, the gear reversing transmission mechanism between the motor shaft and the driving wheel is cancelled, so that the utility model has the advantages of simple structure, low manufacturing and maintenance cost, high driving efficiency and low failure rate. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a three-dimensional schematic view of a direct drive ring sawing machine.

[0018] Figure 2 is a sectional view of the direct drive ring saw machine.

[0019] Figure 3 is Figure 2 an enlarged schematic view of A.

[0020] Figure 4 is a partial exploded schematic view of the direct drive ring saw machine. Figure 1 .

[0021] Figure 5 is a partial exploded schematic view of the direct drive ring saw machine. Figure 2 .

[0022] Figure 6 is a perspective view of the ring saw blade from one viewing angle.

[0023] Figure 7 is a perspective view of the driving wheel.

[0024] Figure 8 is a perspective view of the ring saw blade from another viewing angle.

[0025] Figure 9 is a perspective view of the auxiliary wheel. DETAILED DESCRIPTION

[0026] The direct drive ring saw machine will be further described in detail below with reference to the embodiments shown in the drawings.

[0027] As Figures 1 to 9 shown, the direct drive ring saw machine comprises a machine body 1, a saw blade holding mechanism 2 arranged at the front end of the machine body 1, and a ring saw blade 3 rotatably arranged on the saw blade holding mechanism 2. The ring saw blade 3 comprises a first ring-shaped side surface 31 and a second ring-shaped side surface 32 arranged oppositely. The saw blade holding mechanism 2 comprises a driving wheel 21 in contact with the first ring-shaped side surface 31 and an auxiliary wheel 22 in contact with the second ring-shaped side surface 32. A motor 4 is arranged in the machine body 1. The motor 4 comprises a motor shaft 41. The driving wheel 21 is coaxially arranged with the motor shaft 41, and the front end of the driving wheel 21 is connected with the motor shaft 41. When the motor 4 is working, the rotary motion of the motor shaft 41 directly drives the driving wheel 21 to rotate, and the ring saw blade 3 is caused to make rotary cutting motion under the friction force of the driving wheel 21 and the auxiliary wheel 22.

[0028] The first annular side surface 31 has at least one annular groove 311 arranged along the circumferential direction thereof, and the outer surface of the driving wheel 21 has at least one annular protrusion 211 arranged along the circumferential direction thereof, the annular protrusion 211 is embedded in the corresponding annular groove 311 and is in contact with the same, thereby achieving the radial positioning of the annular saw blade 3 on the basis of the contact between the driving wheel 21 and the first annular side surface 31. Specifically, in order to ensure the reliability of the contact between the driving wheel 21 and the first annular side surface 31, the annular groove 311 has two and is arranged along the radial direction of the annular saw blade 3, and correspondingly, the annular protrusion 211 also has two and is arranged along the axial direction of the driving wheel 21.

[0029] The second annular side surface 32 is a planar structure, and the outer surface of the auxiliary wheel 22 has a plurality of annular bosses 221 arranged along the axial direction thereof, and each annular boss 221 is in contact with the second annular side surface 32.

[0030] The saw blade retaining mechanism 2 further comprises a head shell body 23 fixedly connected to the front end of the machine body 1, the driving wheel 21 is arranged in the head shell body 23, and the head shell body 23 is further provided with a bearing 6 located on the side of the driving wheel 21 facing the motor 4, the front end of the motor shaft 41 penetrates through the bearing 6 and is connected with the driving wheel 21, and the bearing 6 can provide support for the rotation of the motor shaft 41.

[0031] The saw blade retaining mechanism 2 further comprises a head shell cover 24 covering the side of the head shell body 23 facing the annular saw blade 3, and the head shell cover 24 is detachably fixedly connected with the head shell body 23 through a plurality of screws, the auxiliary wheel 22 is arranged in the head shell cover 24, and the head shell body 23 and the head shell cover 24 form a saw blade slot 25 for the annular saw blade 3 to pass through.

[0032] The head shell cover 24 is provided with an auxiliary wheel position adjusting mechanism 26, the auxiliary wheel position adjusting mechanism 26 comprises an auxiliary wheel mounting seat 261 and an adjusting screw 262, the auxiliary wheel mounting seat 261 is arranged in the head shell cover 24, and the auxiliary wheel 22 is rotatably mounted on the auxiliary wheel mounting seat 261, one end of the adjusting screw 262 is threadedly connected with the auxiliary wheel mounting seat 261, and the other end is exposed outside the head shell cover 24 and is connected with a knob 263, the rotation of the knob 263 can make the auxiliary wheel mounting seat 261 move towards or away from the second annular side surface 32, thereby making the auxiliary wheel 22 approach or away from the second annular side surface 32, so that the auxiliary wheel 22 can adapt to the contact with the second annular side surface 32 of the annular saw blade 3 of different thicknesses by adjusting its own position.

[0033] The annular saw blade 3 further comprises an inner ring surface 33 defining a central through hole 30, and the head shell body 23 and the head shell cover 24 further form a cavity 27, and two guide wheels 28 in contact with the inner ring surface 33 are symmetrically arranged in the cavity 27.

[0034] The motor shaft 41 can be a long shaft structure integrally formed, or a long shaft structure spliced by two or more short shafts. In order to avoid the motor shaft 41 being too long to affect its stability during operation, the motor 4 can be arranged in the front of the fuselage 1, thereby shortening the distance between the motor 4 and the driving wheel 21.

[0035] The above is only a preferred embodiment of the present application, and cannot limit the scope of the present application. Any simple equivalent changes and modifications made according to the scope of the present application and the content of the present application are still within the scope of the present application.

Claims

1. A direct drive ring saw machine comprising a machine body, a saw blade holding mechanism arranged at a front end of the machine body, and a ring-shaped saw blade rotatably arranged at the saw blade holding mechanism, characterized in that: The ring saw blade comprises a first ring side and a second ring side arranged oppositely, the saw blade holding mechanism comprises a driving wheel in contact with the first ring side and an auxiliary wheel in contact with the second ring side, the machine body is provided with a motor, the motor comprises a motor shaft, the driving wheel is coaxial with the motor shaft, and the driving wheel is connected with the front end of the motor shaft.

2. A direct drive ring saw machine according to claim 1, characterized in that: The first ring side is provided with at least one ring groove arranged along the circumferential direction, the outer surface of the driving wheel is provided with at least one ring protrusion arranged along the circumferential direction, and the ring protrusion is embedded in the corresponding ring groove and in contact therewith.

3. A direct drive ring saw machine according to claim 2, characterized in that: The second ring side is a planar structure, the outer surface of the auxiliary wheel is provided with a plurality of ring bosses arranged along the axial direction at intervals, and each ring boss is in contact with the second ring side.

4. A direct drive ring saw machine according to claim 1 or 2 or 3, characterized in that: The saw blade holding mechanism further comprises a head shell main body fixedly connected with the front end of the machine body, the driving wheel is arranged in the head shell main body, the head shell main body is further provided with a bearing on the side of the driving wheel facing the motor, and the front end of the motor shaft penetrates through the bearing and is connected with the driving wheel.

5. A direct drive ring saw machine as claimed in claim 4, characterized in that: The saw blade holding mechanism further comprises a head shell cover body covering the side of the head shell main body facing the ring saw blade, the auxiliary wheel is arranged in the head shell cover body, and a saw blade slot for the ring saw blade to pass through is formed between the head shell main body and the head shell cover body.

6. A direct drive ring saw machine as claimed in claim 5, characterized in that: The head shell cover body is provided with an auxiliary wheel position adjusting mechanism, the auxiliary wheel position adjusting mechanism comprises an auxiliary wheel mounting seat and an adjusting screw, the auxiliary wheel mounting seat is arranged in the head shell cover body, the auxiliary wheel is rotatably mounted on the auxiliary wheel mounting seat, one end of the adjusting screw is threadedly connected with the auxiliary wheel mounting seat, the other end of the adjusting screw is exposed outside the head shell cover body and is connected with a knob, and rotation of the knob can move the auxiliary wheel mounting seat towards or away from the second ring side, so as to move the auxiliary wheel towards or away from the second ring side.

7. A direct drive ring saw machine as claimed in claim 5, characterized in that: The ring saw blade further comprises an inner ring surface defining a central through hole, and a cavity is further formed between the head shell main body and the head shell cover body, two guide wheels in contact with the inner ring surface are symmetrically arranged in the cavity.

8. A direct drive ring saw machine as claimed in claim 5, characterized in that: The head shell cover body and the head shell main body are detachably fixedly connected by screws.

9. A direct drive ring saw machine as claimed in claim 1 or 2 or 3, wherein: The motor shaft is an integral long shaft structure, or the motor shaft is a long shaft structure formed by splicing two or more short shafts.

10. The direct drive ring saw machine according to claim 1 or 2 or 3, characterized in that: The motor is arranged in the front part of the machine body.

Images