Modular trephine

Abstract

The utility model relates to a kind of modularization ring saws, including annular saw blade, fuselage, the head shell connected to the front end of fuselage and the drive mechanism being set in fuselage, it is characterized by:including mounting plate fixed to the side of head shell, the mounting plate is provided with by drive mechanism driven driving wheel component, the driving wheel component is connected with annular saw blade inner ring transmission, the mounting plate both sides are respectively detachably installed with from wheel device, the from wheel device includes the positioning wheel for positioning one side of annular saw blade and the tensioning wheel for the other side of annular saw blade is tensioned. The utility model not only saw blade replacement convenient, and with maintenance cost low, universality higher advantage.

Description

Technical Field

[0001] This utility model relates to the field of cutting tools, and in particular to a modular ring saw. Background Technology

[0002] As a highly efficient cutting tool, the ring saw cuts by rotating a ring-shaped saw blade at high speed. A traditional ring saw typically consists of a body, a drive mechanism, a head housing, and a ring-shaped saw blade. The drive mechanism rotates the ring-shaped saw blade via a drive wheel. To ensure smooth operation of the saw blade, multiple sets of positioning wheels and tensioning wheels are usually provided on the side of the saw blade.

[0003] However, existing ring saw structures have several drawbacks: First, replacing the saw blade is cumbersome: Replacing the saw blade requires removing and reinstalling the positioning wheel and tensioning wheel, which is not only time-consuming and labor-intensive but also seriously affects work efficiency. Second, maintenance costs are high: Wear-prone parts such as the drive wheel, positioning wheel, and tensioning wheel are difficult to replace, often requiring disassembly of the entire head shell or sending it to a factory for repair. Third, versatility is poor: A single machine cannot accommodate saw blades of different outer diameters, limiting its application range. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a modular ring saw that not only makes saw blade replacement convenient, but also has the advantages of low maintenance cost and high versatility.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A modular ring saw includes a ring saw blade, a body, a head shell connected to the front end of the body, and a drive mechanism disposed within the body. It also includes a mounting plate fixed to one side of the head shell. The mounting plate is provided with a drive wheel assembly driven by the drive mechanism. The drive wheel assembly is connected to the inner ring of the ring saw blade via a transmission connection. Driven wheel devices are detachably mounted on both sides of the mounting plate. The driven wheel device includes a positioning wheel for positioning one side of the ring saw blade and a tensioning wheel for tensioning the other side of the ring saw blade.

[0007] Furthermore, the mounting plate is fan-shaped, with an open positioning groove on each of its two sides; the driven wheel device also includes a positioning block, which is accommodated in the corresponding positioning groove, the outline of the positioning block matches the outline of the positioning groove, and the positioning block is detachably and fixedly connected to the positioning groove by fasteners.

[0008] Furthermore, the driven wheel device also includes a driven wheel seat, a first bushing is provided on one side of the driven wheel seat, the positioning wheel is fitted onto the first bushing, and the positioning block is disposed on the outer periphery of the first bushing.

[0009] Furthermore, a second bushing, an eccentric shaft, and a pivot hole are provided on the other side of the wheel seat. The tensioning wheel is fitted onto the second bushing, and the eccentric shaft is integrally formed with the second bushing. The eccentric shaft is located at the end of the second bushing away from the tensioning wheel. The eccentric shaft is pivotally connected to and extends out of the pivot hole. A knob is fixedly connected to the extended end of the eccentric shaft. The axis of the eccentric shaft is parallel and offset to the axis of the second bushing. By rotating the knob, the eccentric shaft rotates around its own axis, thereby driving the second bushing and the tensioning wheel to swing, so as to adjust the clamping force of the tensioning wheel on the annular saw blade. When the tensioning wheel swings away from the annular saw blade, it can provide space for picking up and putting down the saw blade.

[0010] Furthermore, the driven wheel device also includes a locking mechanism for locking the eccentric shaft. The locking mechanism includes a locking bolt and an opening on one side of the driven wheel seat that extends axially along the pivot hole. The opening communicates with the pivot hole and passes through both ends of the driven wheel seat in the axial direction of the pivot hole. The locking bolt is horizontally positioned in the opening. When the locking bolt is tightened, the seats on both sides of the opening undergo elastic deformation due to the pressure, thereby locking the eccentric shaft.

[0011] Furthermore, it also includes a detachable cover for mounting on the two driven wheel assemblies, with the nuts and knobs of the locking bolts exposed on the cover.

[0012] Furthermore, the drive mechanism includes a drive shaft for driving the drive wheel assembly, the drive shaft being mounted on the head shell and the mounting plate, with one end of the drive shaft extending out of the mounting plate, and the drive wheel assembly being detachably mounted on the extended end of the drive shaft.

[0013] Furthermore, the extended end of the drive shaft is provided with a shoulder; the drive wheel assembly includes a first clamping disc, a second clamping disc, a gear seat sleeved and abutting against the second clamping disc, an external gear sleeved on the gear seat, and an end cover. Both the first clamping disc and the second clamping disc are sleeved on the extended end of the drive shaft. The first clamping disc abuts against the shoulder, and the end cover abuts against the second clamping disc. Bolts pass through the end cover and are fixedly connected to the extended end of the drive shaft, so that the first clamping disc and the gear seat together clamp the external gear. The inner ring of the annular saw blade is provided with an internal gear that meshes with the external gear.

[0014] Furthermore, the gear seat has a conical hole on the side away from the first clamping plate, and the second clamping plate has a cone that mates with the conical hole on the side facing the first clamping plate.

[0015] Furthermore, the positioning wheel and the tensioning wheel are arranged symmetrically and respectively contact the two sides of the annular saw blade; the outer circumference of the positioning wheel is provided with two annular flanges at intervals, and the side of the annular saw blade that contacts the positioning wheel surface is provided with two annular grooves, and the two annular flanges on the positioning wheel are respectively engaged with the two annular grooves of the annular saw blade.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] First, saw blade replacement is convenient: When replacing the saw blade, there is no need for the cumbersome removal and installation of the positioning wheel and tensioning wheel. The operator only needs to loosen the locking bolts, release the lock on the eccentric shaft, and rotate the knob to cause the eccentric shaft to swing the tensioning wheel away from the circular saw blade, providing ample space for inserting the new saw blade and removing the old one. This significantly reduces the technical difficulty and time cost of the replacement operation, minimizes equipment downtime, and improves work efficiency.

[0018] Secondly, maintenance costs are low: The driven wheel assembly is a single module that uses a positioning block to engage with a positioning slot on the mounting plate, enabling quick and precise assembly and disassembly. When a single driven wheel wears out, the entire module can be replaced directly, eliminating the need for on-site adjustments by specialized technicians and avoiding the hassle of sending the entire machine to a factory for repair. The drive wheel assembly adopts a detachable, split-type clamping structure, fixed to the drive shaft with bolts. When worn, this assembly can be directly replaced without disassembling the drive shaft or the entire drive mechanism, making maintenance convenient and extremely cost-effective.

[0019] Third, high versatility: The modular design allows this ring saw to be adapted to ring saw blades of different outer diameters by replacing different specifications of the drive wheel assembly and driven wheel module. This greatly expands the application range of a single machine, allowing users to flexibly configure it according to different processing needs and reducing the cost of purchasing multiple dedicated machines. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of a modular ring saw according to this utility model.

[0021] Figure 2 yes Figure 1 A 3D diagram after removing the outer cover.

[0022] Figure 3 This is a three-dimensional schematic diagram of the drive wheel assembly and two driven wheel devices mounted on the mounting plate.

[0023] Figure 4 It is a three-dimensional schematic diagram of the connection between the mounting plate, head shell, and drive wheel assembly.

[0024] Figure 5 This is a three-dimensional schematic diagram of the driven wheel device of this utility model.

[0025] Figure 6 yes Figure 3 Sectional view at point A in the middle.

[0026] Figure 7 This is a three-dimensional schematic diagram of the wheel seat in this utility model.

[0027] Figure 8 This is a three-dimensional schematic diagram of the second bushing in this utility model. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the embodiments shown in the accompanying drawings.

[0029] like Figures 1 to 8 As shown in the embodiment of this utility model, a modular ring saw includes a ring saw blade 1, a body 2, a head shell 3 connected to the front end of the body 2, and a drive mechanism 4 disposed within the body 2. It also includes a mounting plate 5 fixed to one side of the head shell 3. The mounting plate 5 is provided with a drive wheel assembly 6 driven by the drive mechanism 4. The drive wheel assembly 6 is connected to the inner ring of the ring saw blade 1 via a transmission. Driven wheel devices 7 are detachably mounted on both sides of the mounting plate 5. The driven wheel devices 7 include a positioning wheel 71 for positioning one side of the ring saw blade 1 and a tensioning wheel 72 for tensioning the other side of the ring saw blade 1.

[0030] As described above, the mounting plate 5 is fan-shaped, with an open positioning groove 51 on each of its two sides; the wheel device 7 also includes a positioning block 73, which is housed in the corresponding positioning groove 51. The outline of the positioning block 73 matches the outline of the positioning groove 51, and the positioning block 73 is detachably and fixedly connected to the positioning groove 51 by fasteners, including bolts, screws, etc.

[0031] As described above, the driven wheel device 7 also includes a driven wheel seat 74, a first bushing 741 is provided on one side of the driven wheel seat 74, the positioning wheel 71 is fitted onto the first bushing 741, and the positioning block 73 is disposed on the outer periphery of the first bushing 741.

[0032] As described above, a second bushing 742, an eccentric shaft 743, and a pivot hole 744 are provided on the other side of the wheel seat 74. The tension wheel 72 is fitted onto the second bushing 742. The eccentric shaft 743 is integrally formed with the second bushing 742, and the eccentric shaft 743 is located at the end of the second bushing 742 away from the tension wheel 72. The eccentric shaft 743 is pivotally connected to and extends out of the pivot hole 744. A knob 745 is fixedly connected to the extended end of the eccentric shaft 743. The axis of the eccentric shaft 743 is parallel and offset to the axis of the second bushing 742. By rotating the knob 745, the eccentric shaft 743 rotates around its own axis, thereby driving the second bushing 742 and the tension wheel 72 to swing, so as to adjust the clamping force of the tension wheel 72 on the annular saw blade. When the tension wheel 72 swings away from the annular saw blade 1, it can provide space for picking up and putting down the saw blade.

[0033] As described above, the driven wheel device 7 also includes a locking mechanism 75 for locking the eccentric shaft 743. The locking mechanism 75 includes a locking bolt 751 and an opening 752 that is opened on one side of the driven wheel seat 74 and extends axially along the pivot hole 744. The opening 752 communicates with the pivot hole 744 and passes through both ends of the driven wheel seat 74 in the axial direction of the pivot hole 744. The locking bolt 751 is horizontally arranged in the opening 752. When the locking bolt 751 is tightened, the seat body on both sides of the opening 752 undergoes elastic deformation due to the force compression, thereby achieving the locking of the eccentric shaft 743.

[0034] As described above, it also includes a cover 8 that is detachably mounted on the two driven wheel devices 7, with the nut of the locking bolt 751 and the knob 745 exposed on the cover 8.

[0035] As described above, the drive mechanism 4 includes a drive shaft 41 for driving the drive wheel assembly 6. The drive shaft 41 is mounted on the head shell 3 and the mounting plate 5, and one end of the drive shaft 41 extends out of the mounting plate 5. The drive wheel assembly 6 is detachably mounted on the extended end of the drive shaft 41.

[0036] As described above, the extended end of the drive shaft 41 is provided with a shoulder 411; the drive wheel assembly 6 includes a first clamping disc 61, a second clamping disc 62, a gear seat 63 sleeved and abutting against the second clamping disc 62, an external gear 64 sleeved on the gear seat 63, and an end cover 65. The first clamping disc 61 and the second clamping disc 62 are both sleeved on the extended end of the drive shaft 41. The first clamping disc 61 abuts against the shoulder 411, and the end cover 65 abuts against the second clamping disc 62. Bolts pass through the end cover 65 and are fixedly connected to the extended end of the drive shaft 41, so that the first clamping disc 61 and the gear seat 63 together clamp the external gear 64. The inner ring of the annular saw blade 1 is provided with an internal gear 11 that meshes with the external gear 64.

[0037] As described above, the gear seat 63 has a conical hole 631 on the side away from the first clamping plate 61, and the second clamping plate 62 has a cone 621 that mates with the conical hole 631 on the side facing the first clamping plate 61. The taper of the conical hole 631 is 1:5 to 1:10.

[0038] As described above, the positioning wheel 71 and the tensioning wheel 72 are arranged symmetrically and respectively contact the two sides of the annular saw blade 1; the positioning wheel 71 is provided with two annular flanges 711 at intervals on its outer periphery, and the annular saw blade 1 is provided with two annular grooves 12 on the side that contacts the positioning wheel 71. The two annular flanges 711 on the positioning wheel 71 are respectively engaged with the two annular grooves 12 of the annular saw blade 1.

[0039] The steps for changing to a different outer diameter ring saw blade 1 are as follows:

[0040] Step 1: First, use a wrench to loosen the locking bolt 751 to release the lock on the eccentric shaft 743; then rotate the knob 745 to make the tension wheel 72 swing away from the old ring saw blade 1 through the eccentric shaft 743 until the old ring saw blade 1 is completely disengaged from the tension wheel 72, creating an operating space to remove the old ring saw blade 1, and then remove the old ring saw blade 1.

[0041] Step 2: Remove the outer cover 8, and then remove the two old driven wheel devices 7 and the old drive wheel assembly 6 in sequence.

[0042] Step 3: Take out two new driven wheel devices 7, a new drive wheel assembly 6, and a new outer cover 8 that match the outer diameter of the new ring saw blade 1; first, fix the positioning blocks 73 of the two new driven wheel devices 7 on the positioning grooves 51 on both sides of the mounting plate 5 respectively, and at the same time, install the new drive wheel assembly 6 onto the extended end of the drive shaft 41.

[0043] Step 4: First, align the inner gear 11 of the new ring saw blade 1 with the outer gear 64 of the new drive wheel assembly 6 and ensure proper meshing. At the same time, make the two annular grooves 12 on one side of the new ring saw blade 1 respectively engage with the two annular flanges 711 on the corresponding new positioning wheel 71 to ensure accurate positioning of the ring saw blade 1.

[0044] Step 5: Rotate the new knob 745 to drive the tension wheel 72 to swing through the eccentric shaft 743, and adjust the clamping force of the tension wheel 72 on the new ring saw blade 1; after the clamping force is appropriate, tighten the locking bolt 751 to fix the position of the tension wheel 72.

[0045] Step 6: Finally, install the new outer cover 8 on the two new driven wheel devices 7, thus completing the replacement of the ring saw blades 1 with different outer diameters.

[0046] The above description is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Any simple equivalent changes and modifications made in accordance with the scope of the present utility model patent application and the description of the utility model shall still fall within the scope of the present utility model patent.

Claims

1. A modular ring saw, comprising a ring saw blade, a body, a head shell connected to the front end of the body, and a drive mechanism disposed within the body, characterized in that: It also includes a mounting plate fixed to one side of the head shell, on which a drive wheel assembly driven by a drive mechanism is provided. The drive wheel assembly is connected to the inner ring of the ring saw blade. A driven wheel device is detachably mounted on both sides of the mounting plate. The driven wheel device includes a positioning wheel for positioning one side of the ring saw blade and a tensioning wheel for tensioning the other side of the ring saw blade.

2. A modular ring saw according to claim 1, characterized in that: The mounting plate is fan-shaped, with an open positioning groove on each of its two sides; the driven wheel device also includes a positioning block, which is accommodated in the corresponding positioning groove. The outline of the positioning block matches the outline of the positioning groove, and the positioning block is detachably and fixedly connected to the positioning groove by fasteners.

3. A modular ring saw according to claim 2, characterized in that: The driven wheel device further includes a driven wheel seat, a first bushing is provided on one side of the driven wheel seat, the positioning wheel is fitted onto the first bushing, and the positioning block is disposed on the outer periphery of the first bushing.

4. A modular ring saw according to claim 3, characterized in that: The other side of the wheel seat is provided with a second bushing, an eccentric shaft, and a pivot hole. The tensioning wheel is fitted onto the second bushing. The eccentric shaft is integrally formed with the second bushing, and the eccentric shaft is located at the end of the second bushing away from the tensioning wheel. The eccentric shaft is pivotally connected to and extends out of the pivot hole. A knob is fixedly connected to the extended end of the eccentric shaft. The axis of the eccentric shaft is parallel and offset to the axis of the second bushing. By rotating the knob, the eccentric shaft rotates around its own axis, thereby driving the second bushing and the tensioning wheel to swing, so as to adjust the clamping force of the tensioning wheel on the annular saw blade. When the tensioning wheel swings away from the annular saw blade, it can provide space for picking up and putting down the saw blade.

5. A modular ring saw according to claim 4, characterized in that: The driven wheel device also includes a locking mechanism for locking the eccentric shaft. The locking mechanism includes a locking bolt and an opening on one side of the driven wheel seat that extends axially along the pivot hole. The opening communicates with the pivot hole and passes through both ends of the driven wheel seat in the axial direction of the pivot hole. The locking bolt is horizontally positioned in the opening. When the locking bolt is tightened, the seats on both sides of the opening undergo elastic deformation due to the pressure, thereby locking the eccentric shaft.

6. A modular ring saw according to claim 5, characterized in that: It also includes a cover that can be detachably installed on the two driven wheel assemblies, with the nuts and knobs of the locking bolts exposed on the cover.

7. A modular ring saw according to any one of claims 1 to 6, characterized in that: The drive mechanism includes a drive shaft for driving the drive wheel assembly, the drive shaft being mounted on the head shell and the mounting plate, with one end of the drive shaft extending out of the mounting plate, and the drive wheel assembly being detachably mounted on the extended end of the drive shaft.

8. A modular ring saw according to claim 7, characterized in that: The extended end of the drive shaft is provided with a shoulder; the drive wheel assembly includes a first clamping disc, a second clamping disc, a gear seat sleeved and abutting against the second clamping disc, an external gear sleeved on the gear seat, and an end cover. The first clamping disc and the second clamping disc are both sleeved on the extended end of the drive shaft. The first clamping disc abuts against the shoulder, and the end cover abuts against the second clamping disc. Bolts pass through the end cover and are fixedly connected to the extended end of the drive shaft, so that the first clamping disc and the gear seat together clamp the external gear. The inner ring of the annular saw blade is provided with an internal gear that meshes with the external gear.

9. A modular ring saw according to claim 8, characterized in that: The gear seat has a conical hole on the side away from the first clamping plate, and the second clamping plate has a cone that mates with the conical hole on the side facing the first clamping plate.

10. A modular ring saw according to claim 1, characterized in that: The positioning wheel and the tensioning wheel are arranged symmetrically and contact the two sides of the annular saw blade respectively; the outer circumference of the positioning wheel is provided with two annular flanges at intervals, and the side of the annular saw blade that contacts the positioning wheel is provided with two annular grooves. The two annular flanges on the positioning wheel are respectively engaged with the two annular grooves of the annular saw blade.

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