Single gear quill drive mechanism for a sawing machine

Abstract

The utility model belongs to sawing -machine technical field especially relates to a single gear bow frame drive mechanism of sawing -machine, include: sawing -machine base is provided with the bow frame on sawing -machine base, still include: guide rail sliding block group, guide rail sliding block group includes the linear guide rail and linear sliding block that cooperate with each other, guide rail sliding block group has two and is arranged respectively at the both sides of sawing -machine base, drive part, drive part sets up below the bow frame, drive part is arranged in the middle part of bow frame in the length direction of bow frame and is used for carrying out the middle single line drive of bow frame. Among them, the both sides of bow frame are connected with the both sides of sawing -machine base through guide rail sliding block group and slide, and the bow frame is driven along the length direction of sawing -machine base and slides to feed through drive part, relative to prior art, the utility model effectively improves the operation stability of sawing -machine.

Description

Technical Field

[0001] This utility model belongs to the field of sawing technology, and in particular relates to a single gear bow drive mechanism for a sawing machine. Background Technology

[0002] A band saw is a device used for cutting materials and is widely used in industrial production. The existing vertical split band saw uses a double-sided gear and rack drive to drive the bow frame to move back and forth. The bow frame is simple to manufacture but complex to install and has low precision. This results in unbalanced and asynchronous operation of the gear drives on both sides of the machine tool, which can easily cause vibration, sawing deviation, tooth jamming and band breakage during operation, and low sawing efficiency. The traditional offset single-sided gear drive is more likely to affect the feed stability of the band saw, so it is necessary to make improvements. Utility Model Content

[0003] The purpose of this utility model is to address the aforementioned technical problems by providing a single-gear bow drive mechanism for a saw, thereby effectively improving the operational stability of the saw.

[0004] In view of this, the present invention provides a single-gear bow drive mechanism for a saw, comprising: A saw base, on which a bow frame is provided; Also includes: A guide rail slider assembly, comprising a linear guide rail and a linear slider that cooperate with each other, wherein there are two guide rail slider assemblies and they are respectively arranged on both sides of the saw base; The drive unit is located below the bow frame and is arranged in the middle of the bow frame along its length for central single-line drive of the bow frame.

[0005] The bow frame is slidably connected to the two sides of the saw base via a guide rail slider assembly, and the bow frame is driven by a drive unit to slide along the length of the saw base for feeding.

[0006] In this technical solution, the bow frame and the saw base are connected by guide rail sliders on both sides. The drive unit is installed in the middle of the bow frame and drives the entire bow frame. The central drive makes the linear sliders on both sides of the bow frame evenly stressed, and the straightness error of the guide rail is uniformly reduced, ensuring that the bow frame runs smoothly. During operation, the sawing is smooth and precise, and the operation stability of the saw is effectively improved.

[0007] In the above technical solution, the driving unit further includes: A rack is provided on the base of the sawing machine and its length direction is parallel to the length direction of the base of the sawing machine. The rack is located in the middle of the width direction of the base of the sawing machine. Gear, which meshes with a rack; The gear rotates actively and engages with the rack to drive the bow frame to slide along the length of the saw base for feeding.

[0008] Furthermore, the above technical solution also includes: Mounting bracket, which is fixedly installed at the bottom of the bow frame; A drive reducer is mounted on a mounting frame, and a drive motor is connected to the input end of the drive reducer. A drive bearing housing is mounted on a mounting bracket, and the drive bearing housing is used to rotatably mount the gear on the mounting bracket; The drive bearing housing has a driven sprocket on one side that is connected to the gear shaft end for transmission, and a drive sprocket is connected to the output end of the drive reducer for transmission. The drive sprocket and the driven sprocket are connected by chain transmission.

[0009] Furthermore, the above technical solution also includes: The backlash-eliminating connection is disposed on the drive unit for connecting the drive unit and the bow frame. The backlash-eliminating connection can provide a pressure toward the rack to the gear to eliminate the mating clearance between the gear and the rack.

[0010] In the above technical solution, the gap-free connection portion further includes: A connecting side plate is provided on the side of the drive unit. The inner side wall of the connecting side plate is fixedly connected to the drive unit, and the top of the outer side wall of the connecting side plate is rotatably connected to the bow frame. A pressure rod, one end of which is rotatably connected to the bottom end of the outer wall of the connecting side plate, and the other end of which is rotatably connected to the bow frame, and a spring is sleeved on the pressure rod; The spring provides a pressure toward the rack to the gear through elastic force, thereby eliminating the clearance between the gear and the rack.

[0011] The beneficial effects of this utility model are: 1. A single-gear central drive replaces a double-sided gear rack assembly, reducing transmission components by 50% and shortening installation time by 40%. The installation accuracy requirements for the rack and guide rail are reduced, eliminating the need for complex synchronization adjustments.

[0012] 2. The central drive ensures symmetrical force distribution on the bow frame. Combined with a high-precision guide rail slider assembly, the lateral sway of the bow frame during operation is small, resulting in minimal flatness error of the sawing surface and effectively improving the operational stability of the saw.

[0013] 3. The backlash-free connection effectively eliminates gear and rack backlash, ensuring that the gear always presses against the rack and maintains meshing accuracy. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the drive unit structure of this utility model.

[0017] Figure 3 This is a side view structural diagram of the drive unit of this utility model.

[0018] Figure 4 This is a side view structural diagram of the gap-free connection part of this utility model.

[0019] Figure 5 This is a front view structural schematic diagram of the gap-free connection part of this utility model.

[0020] The markings in the diagram are as follows: 1. Sawing machine base; 2. Bow frame; 3. Guide rail slider assembly; 4. Drive unit; 40. Rack; 41. Gear; 42. Mounting bracket; 43. Drive reducer; 44. Drive motor; 45. Drive bearing housing; 46. Driven sprocket; 47. Chain; 5. Connecting side plate; 6. Pressure rod; 7. Spring; 8. Connecting block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0023] Example 1: This application provides a single-gear bow frame drive mechanism for a saw, including: a saw base 1, on which a bow frame 2 is provided; It also includes: a guide rail slider assembly 3, which includes a linear guide rail and a linear slider that cooperate with each other. The guide rail slider assembly 3 has two and is respectively arranged on both sides of the saw base 1; and a drive unit 4, which is arranged below the bow frame 2. The drive unit 4 is arranged in the middle of the bow frame 2 along the length direction of the bow frame 2 for central single-line drive of the bow frame 2.

[0024] The bow frame 2 is slidably connected to the two sides of the saw base 1 via the guide rail slider group 3. The bow frame 2 is driven by the drive unit 4 to slide along the length direction of the saw base 1 for feeding.

[0025] Moreover, both the saw base 1 and the bow frame 2 are conventional structures. The guide rail slider group 3 consists of conventional linear guide rails and linear sliders. The length direction of the linear guide rails is parallel to the length direction of the saw base 1. The two linear guide rails are fixedly installed on the sides of the saw base 1. The linear sliders are installed on the lower sides of the bow frame 2 and fixedly connected to the bow frame 2 through conventional slider connecting seats. The drive unit 4 is also located in the middle in the width direction of the saw base 1. That is, the drive unit 4 is centrally located relative to both the bow frame 2 and the saw base 1.

[0026] In this embodiment, the bow frame 2 and the saw base 1 are connected by the guide rail slider group 3 on both sides. The drive unit 4 is installed in the middle of the bow frame 2 and drives the entire bow frame 2. The central drive makes the linear sliders on both sides of the bow frame 2 evenly stressed, and the straightness error of the guide rail is averaged out, ensuring that the bow frame 2 runs smoothly. During operation, the sawing is smooth and precise, which ultimately effectively improves the running stability of the saw.

[0027] Example 2: This embodiment provides a single-gear bow drive mechanism for a saw. In addition to the technical solution of the above embodiment, it also has the following technical features: the drive unit 4 further includes: a rack 40, which is disposed on the saw base 1 and distributed parallel to the length direction of the saw base 1, and the rack 40 is located in the middle in the width direction of the saw base 1; and a gear 41, which meshes with the rack 40. The gear 41 rotates actively and cooperates with the rack 40 to drive the bow frame 2 to slide along the length direction of the saw base 1 for feeding.

[0028] It also includes: a mounting bracket 42, which is fixedly mounted on the bottom of the bow frame 2; a drive reducer 43, which is mounted on the mounting bracket 42, and a drive motor 44 is connected to the input end of the drive reducer; and a drive bearing seat 45, which is mounted on the mounting bracket 42 and is used to rotatably mount the gear 41 on the mounting bracket 42. The drive bearing housing 45 has a driven sprocket 46 on one side that is connected to the shaft end of the gear 41, and a drive sprocket is connected to the output end of the drive reducer 43. The drive sprocket and the driven sprocket 46 are connected by a chain 47.

[0029] Furthermore, a conventional rack 40 base is arranged on the bottom surface of the saw base 1. The rack 40 is fixedly installed on the rack 40 base. The rack 40 and gear 41 are both located in the middle position in the length direction of the bow frame 2 and the width direction of the saw base 1. The rotation axis of the gear 41 is parallel to the length direction of the bow frame 2. The mounting bracket 42 can be fixedly connected to the bow frame 2 in a conventional way, such as by bolt connection. The mounting bracket 42 can be platform-shaped. The drive reducer 43 is installed on the upper surface of the platform, and the drive bearing seat 45 is installed on the side of the platform. The gear 41 is rotatably installed on the drive bearing seat 45 in a conventional way. The rack 40 is made of 45# steel with heat treatment and a tooth surface hardness of HRC45-50. When installing the rack 40 base, it is necessary to ensure that the parallelism between the top surface of the rack 40 and the top surface of the guide rail is ≤0.03mm / 100mm. The gear 41 has a module of 4, 24 teeth, and is made of 20CrMnTi carburized and quenched material with a tooth surface hardness of HRC58-62. The drive reducer 43 is a helical gear reducer 41 with a reduction ratio of 1:10. Its input end is connected to the drive motor 44 via a flexible coupling. The motor is a servo motor with a power of 3kW and a speed of 1500rpm, which can precisely control the speed of gear 41.

[0030] In this embodiment, after the drive motor 44 starts, its speed is reduced by a reducer, and the gear 41 is driven to rotate via a sprocket and chain 47. Since the gear 41 meshes with the rack 40, the bow frame 2 moves linearly along the guide rail under the action of the gear 41 and rack 40. The centrally located drive ensures that the linear sliders on both sides of the bow frame 2 are subjected to uniform force, and the straightness error of the guide rail is averaged out, ensuring smooth operation of the bow frame 2.

[0031] Example 3: This embodiment provides a single-gear bow frame drive mechanism for a saw. In addition to the technical solutions of the above embodiments, it also has the following technical features, including: a backlash-eliminating connection part. The backlash-eliminating connection part is disposed on the drive part 4 for connecting the drive part 4 and the bow frame 2. The backlash-eliminating connection part can provide a pressure on the gear 41 toward the rack 40 to eliminate the mating gap between the gear 41 and the rack 40.

[0032] The gap-eliminating connection part further includes: a connecting side plate 5, which is disposed on the side of the driving part 4. The inner side wall of the connecting side plate 5 is fixedly connected to the driving part 4, and the top of the outer side wall of the connecting side plate 5 is rotatably connected to the bow frame 2; a pressure rod 6, one end of which is rotatably connected to the bottom end of the outer side wall of the connecting side plate 5, and the other end is rotatably connected to the bow frame 2. A spring 7 is sleeved on the pressure rod 6. The spring 7 provides a pressure on the gear 41 toward the rack 40 through its elastic force to eliminate the mating gap between the gear 41 and the rack 40.

[0033] Furthermore, the connecting side plate 5 preferably has two and is symmetrically distributed on both sides of the drive unit 4. The connecting side plate 5 can be fixedly connected to the mounting bracket 42 of the drive unit 4, such as by bolt connection. The connecting side plate 5 is rotatably connected to the bow frame 2 through a conventional shaft. Two connecting blocks 8 are provided on the pressure rod 6. The two connecting blocks 8 are distributed along the axial direction of the pressure rod 6 at the top and bottom of the pressure rod 6. The connecting tube at the bottom is fixed to the pressure rod 6 in the axial direction. The connecting block 8 at the top is movably engaged with the pressure rod 6 in the axial direction. The connecting block 8 at the bottom is connected to the connecting side plate 5 through a conventional rotating structure such as a rotating shaft. The connecting block 8 at the top adopts the same structure and is rotatably connected to the bow frame 2. The spring 7 is sleeved on the top of the pressure rod 6. One end of the spring 7 is connected to the connecting block 8 at the top, and the other end is connected to the top end of the pressure rod 6. The spring 7 is initially in a stretched rotation state and provides a pressure towards the rack 40 to the gear 41 by contracting elastic force to eliminate the fit gap between the gear 41 and the rack 40.

[0034] In this embodiment, the elastic force of the spring 7 is transmitted to the connecting side plate 5 through the pressure rod 6, thereby generating a thrust on the drive unit 4, so that the gear 41 always presses against the rack 40. When the gear 41 and the rack 40 have a gap due to wear, the spring 7 automatically compensates for the displacement, maintains the meshing accuracy, and further improves the operating stability of the saw.

[0035] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A single-gear bow drive mechanism for a saw, comprising: A saw base (1), on which a bow frame (2) is provided; Its characteristic is that it further includes: The guide rail slider assembly (3) includes a linear guide rail and a linear slider that cooperate with each other. The guide rail slider assembly (3) has two and is respectively arranged on both sides of the saw base (1). Drive unit (4), the drive unit (4) is disposed below the bow frame (2), the drive unit (4) is arranged in the middle of the bow frame (2) along the length direction of the bow frame (2) for central single-line drive of the bow frame (2); The bow frame (2) is slidably connected to the two sides of the saw base (1) via the guide rail slider group (3), and the bow frame (2) is driven by the drive unit (4) to slide along the length direction of the saw base (1) for feeding.

2. The single-gear bow drive mechanism for a sawing machine according to claim 1, characterized in that, The drive unit (4) also includes: A rack (40) is provided on the saw base (1) and the length direction of the rack (40) is parallel to the length direction of the saw base (1). The rack (40) is located in the middle in the width direction of the saw base (1). Gear (41), which meshes with rack (40); The gear (41) rotates actively and engages with the rack (40) to drive the bow frame (2) to slide along the length of the saw base (1) for feeding.

3. The single-gear bow drive mechanism for a sawing machine according to claim 2, characterized in that, Also includes: Mounting bracket (42), which is fixedly mounted on the bottom of the bow frame (2); A drive reducer (43) is mounted on a mounting bracket (42), and a drive motor (44) is connected to the input end of the drive reducer. A drive bearing housing (45) is provided on a mounting bracket (42) for rotatably mounting a gear (41) on the mounting bracket (42); The drive bearing housing (45) is provided with a driven sprocket (46) that is connected to the shaft end of the gear (41) for transmission. The output end of the drive reducer (43) is connected to a driving sprocket. The driving sprocket and the driven sprocket (46) are connected by a chain (47).

4. The single-gear bow drive mechanism for a sawing machine according to claim 2, characterized in that, Also includes: The backlash-eliminating connection is provided on the drive unit (4) for connecting the drive unit (4) and the bow frame (2). The backlash-eliminating connection can provide a pressure on the gear (41) toward the rack (40) to eliminate the mating clearance between the gear (41) and the rack (40).

5. The single-gear bow drive mechanism for a sawing machine according to claim 4, characterized in that, The gap-free connection part further includes: A connecting side plate (5) is provided on the side of the driving part (4). The inner side wall of the connecting side plate (5) is fixedly connected to the driving part (4), and the top of the outer side wall of the connecting side plate (5) is rotatably connected to the bow frame (2). A pressure rod (6) is provided. One end of the pressure rod (6) is rotatably connected to the bottom end of the outer wall of the connecting side plate (5), and the other end is rotatably connected to the bow frame (2). A spring (7) is sleeved on the pressure rod (6). The spring (7) provides a pressure on the gear (41) toward the rack (40) through elastic force to eliminate the mating gap between the gear (41) and the rack (40).

Images