Guide bar forming machine
By designing a removable and connected guide bar forming machine, the problems of cumbersome, high cost and low efficiency of the guide bar forming machine in the prior art are solved, and more efficient guide bar forming production is achieved.
Patent Information
- Application Number
- CN202420377997.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-28
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-02-28
AI Technical Summary
When producing different types of guide bars, existing guide bar forming machines need to replace the entire curved mold assembly, resulting in cumbersome operation, high labor costs and low production efficiency.
Design a guide bar forming machine including clamping mechanism, slewing mechanism and bending mold mechanism. Through the removable bend mold and mounting seat, molds of different bend lengths and widths can be selected for replacement, and adapted to different models of Guide bar.
The replacement operation of the guide bar forming machine is simplified, labor costs are reduced, and production efficiency is improved.
Smart Images
Figure CN222470316U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of guide bar processing, in particular to a guide bar forming machine. Background Art
[0002] In the production of motors, both ends of the guide bar need to be bent and formed so that the guide bar can be connected in the subsequent process. However, in the prior art, when the guide bar forming machine produces different types of guide bars, the entire bending die assembly used for bending and forming needs to be replaced, which has the problems of cumbersome operation, high labor cost, and low production efficiency. Utility Model Content
[0003] The main purpose of the utility model is to propose a guide bar forming machine, aiming to solve the problems in the prior art that when the guide bar forming machine produces guide bars of different models, the entire bending die assembly used for bending and forming needs to be replaced, which results in cumbersome operation, high labor costs, and affects production efficiency.
[0004] To achieve the above-mentioned purpose, the utility model proposes a guide bar forming machine, comprising a clamping mechanism, a rotating mechanism and a bending die mechanism, wherein the clamping mechanism is used to fix the guide bar; the rotating mechanism is movably installed on one side of the clamping mechanism along the transverse direction, the rotating mechanism comprises a rotating disk and a clamping portion movably installed on the rotating disk, the clamping portion is used to clamp the end of the guide bar, and the rotating disk is rotatably installed to bend the guide bar; the bending die mechanism is movably installed between the clamping mechanism and the rotating mechanism, the bending die mechanism comprises a mounting seat and a bending die installed on the mounting seat, the bending die is used to limit and bend the guide bar, and the bending die has a bending length and a bending width; wherein the bending die with different bending lengths and / or bending widths can be selected to be detachably connected to the mounting seat to form different bending combinations for bending and forming guide bars of different models.
[0005] Optionally, the bending mold and the mounting seat are detachably connected via bolts.
[0006] Optionally, the bending mold mechanism further includes a connecting member, the mounting seat is rotatably disposed on the connecting member, and the connecting member is connected to the turntable.
[0007] Optionally, the mounting seat has a limiting portion; the bending mold mechanism also includes a return member movably installed along the longitudinal direction, the return member has an opening matching the limiting portion, so as to enable the bending mold to rotate until the limiting groove of the bending mold is parallel to the transverse direction.
[0008] Optionally, the clamping portion has a movable stroke relative to the turntable along the radial direction of the turntable.
[0009] Optionally, a base is also included, and the base is used to install the clamping mechanism, the rotating mechanism and the bending mold mechanism.
[0010] Optionally, the base is arranged to be inclined, and one end of the base in the longitudinal direction is higher than the other end.
[0011] Optionally, a robot is also included to load and unload the guide strips.
[0012] Optionally, the clamping mechanism, the rotating mechanism and the bending die mechanism are correspondingly arranged as forming groups, two forming groups are arranged, and the two forming groups are arranged opposite to each other in the transverse direction to bend and form the two ends of the guide bar.
[0013] Optionally, the clamping mechanism is movably installed in the transverse direction to form guide bars of different models.
[0014] In the technical solution of the utility model, the clamping mechanism clamps the set position of the guide bar to be bent, the clamping part clamps the end of the guide bar, and the part of the guide bar located between the clamping mechanism and the clamping part is located in the bending mold; then the turntable is rotated by a certain angle, and at the same time, the position of the clamping part on the turntable is adjusted, and the position of the rotating mechanism in the horizontal direction is adjusted, so that the position of the guide bar end (including the height of the guide bar end, the distance between the guide bar end and the set position of the guide bar in the horizontal direction and in the vertical direction) matches the production requirements; the change in the position of the guide bar end is coordinated with the bending mold mechanism, and the guide bar is limited and bent by the bending mold to form a bending section that matches the production requirements, thereby completing the bending of the guide bar end; wherein, the bending mold is detachably connected to the mounting seat, and the bending mold that meets the production requirements is selected for replacement, so that guide bars of different models can be produced, and the mold changing operation is simpler, which can reduce labor costs and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0016] Figure 1 A three-dimensional structural schematic diagram of an embodiment of a guide strip forming machine provided by the utility model;
[0017] Figure 2 A front view of an embodiment of a guide bar forming machine provided by the utility model;
[0018] Figure 3 A side view of an embodiment of a guide bar forming machine provided by the utility model;
[0019] Figure 4 A top view of an embodiment of a guide bar forming machine provided by the utility model;
[0020] Figure 5 This is a structural schematic diagram of an embodiment of the bending die mechanism provided by the utility model.
[0021] Description of Figure Numbers:
[0022] Label name Label name 1000 Strip forming machine 25 First Track 1 Clamping mechanism 3 Bending die mechanism 11 Clamping part 31 Mounting Block 12 Second support frame 311 Limiting part 13 Second Track 32 Bending mold 2 Rotating mechanism 33 Connectors 21 Turntable 34 return piece 22 Clamping part 35 cylinder 23 The third cylinder 4 Base 24 The first support frame
[0023] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.
[0027] In the production of motors, both ends of the guide bar need to be bent and formed so that the guide bar can be connected in the subsequent process. However, in the prior art, when the guide bar forming machine produces different types of guide bars, the entire bending die assembly used for bending and forming needs to be replaced, which has the problems of cumbersome operation, high labor cost, and low production efficiency.
[0028] In view of this, the utility model proposes a guide strip forming machine, which has a simpler mold changing operation, can reduce labor costs, and improve production efficiency. Figures 1 to 5 This is an embodiment of the guide strip forming machine provided by the utility model.
[0029] In the present utility model embodiment, please refer to Figures 1 to 5 The guide bar forming machine 1000 includes a clamping mechanism 1, a rotating mechanism 2 and a bending die mechanism 3. The clamping mechanism 1 is used to fix the guide bar; the rotating mechanism 2 is movably installed on one side of the clamping mechanism 1 (with a Figure 4 For example, the left and right directions are the horizontal directions, and the up and down directions are the longitudinal directions), the rotating mechanism 2 includes a rotating disk 21 and a clamping portion 22 movably mounted on the rotating disk 21, the clamping portion 22 is used to clamp the end of the guide bar, and the rotating disk 21 is rotatably mounted to bend the guide bar; the bending die mechanism 3 is movably mounted between the clamping mechanism 1 and the rotating mechanism 2, the bending die mechanism 3 includes a mounting seat 31 and a bending die 32 mounted on the mounting seat 31, the bending die 32 is used to limit the guide bar and bend it into shape, and the bending die 32 has a bending length and a bending width; wherein, the bending die 32 with different bending lengths and / or bending widths can be selected to be detachably connected to the mounting seat 31 to form different bending combinations for bending and forming guide bars of different models.
[0030] In the technical solution of the utility model, the clamping mechanism 1 clamps the set position of the guide bar to be bent, the clamping portion 22 clamps the end of the guide bar, and the portion of the guide bar between the clamping mechanism 1 and the clamping portion 22 is located in the bending mold 32; then the rotating disk 21 is rotated by a certain angle, and at the same time, the position of the clamping portion 22 on the rotating disk 21 is adjusted, and the position of the rotating mechanism 2 in the horizontal direction is adjusted, so that the position of the end of the guide bar (including the height of the end of the guide bar, the distance between the end of the guide bar and the set position of the guide bar in the horizontal direction) is adjusted. The upward and longitudinal spacing) matches the production requirements; the change in the position of the guide bar end is coordinated with the bending die mechanism 3, and the guide bar is limited and bent by the bending die 32 to form a bending section that matches the production requirements, thereby completing the bending forming of the guide bar end; wherein, the bending die 32 is detachably connected to the mounting seat 31, and the bending die 32 that meets the production requirements is selected for replacement, so that different types of guide bars can be produced, and the changing operation is simpler, which can reduce labor costs and improve production efficiency.
[0031] It can be understood that a limiting groove is formed on the bending mold 32 to pass through in the transverse direction for placing and limiting the guide strip; the utility model does not specifically limit the structure of the clamping mechanism 1, and it is sufficient to be able to clamp and release the guide strip placed in the transverse direction; in some embodiments of the utility model, the clamping mechanism 1 includes a clamping portion 11, and the clamping portion 11 includes a first base plate, a first limiting block, a first clamping block and a first driving assembly, the first limiting block and the first clamping block are longitudinally arranged on the first base plate, the first limiting block is fixedly connected to the first base plate, the first clamping block is longitudinally slidably connected to the first base plate, and the first clamping block and the first limiting block can be moved between them. It is capable of forming a storage groove parallel to the transverse direction for placing the guide bar, and the first driving component is used to drive the first clamping block to move in the longitudinal direction to clamp and release the guide bar; the structure is simple and easy to control; the utility model does not specifically limit the first driving component, and it can be a cylinder, an oil cylinder, an electric telescopic rod or a ball screw linear driving component, etc., which can drive the first clamping block to move in the longitudinal direction; in some embodiments of the utility model, the first driving component is a first oil cylinder; in addition, the utility model can not only bend and form one guide bar, but also bend and form two guide bars at the same time by selecting the bending mold 32 with different bending widths, thereby improving production efficiency.
[0032] In some embodiments of the present invention, please refer to Figure 5, the bending mold 32 is detachably connected to the mounting seat 31 by bolts. The bending mold 32 is connected to the mounting seat 31 by bolts, which is convenient for the installation and removal of the bending mold 32, and the connection is stable. It can be understood that a first mounting hole is provided on the mounting seat 31, and a corresponding second mounting hole is provided on the mounting portion of the bending mold 32. Bolts are installed through the first mounting hole and the corresponding second mounting hole, so that the bending mold 32 and the mounting seat 31 are detachably connected by bolts; the number of bolts can be 1, 2, 3, 4, etc.; in some embodiments of the utility model, the number of bolts is 2, and the bending mold 32 is detachably connected to the mounting seat 31 by two bolts. The number of bolts is more appropriate, and while ensuring the stability of the connection, the installation and removal of the bending mold 32 are easier.
[0033] In some embodiments of the utility model, the bending die mechanism 3 further includes a connecting member 33, the mounting seat 31 is rotatably arranged on the connecting member 33, and the connecting member 33 is connected to the rotating disk 21. The connecting member 33 is connected to the rotating disk 21, and the rotation of the rotating disk 21 drives the connecting member 33 to rotate. The rotation of the connecting member 33 causes the mounting seat 31 and the bending die 32 to deflect a certain angle in the vertical plane. At the same time, the guide bar located in the bending die 32 drives the bending die 32 to rotate in the horizontal plane, thereby forming a bending section that matches the production requirements; the structure is simple and easy to operate.
[0034] In some embodiments of the utility model, the mounting seat 31 has a limiting portion 311; the bending die mechanism 3 also includes a return member 34 movably installed along the longitudinal direction, and the return member 34 has an opening matching the limiting portion 311, so as to enable the bending die 32 to rotate until the limiting groove of the bending die 32 is parallel to the transverse direction. When the bending forming of the end of the guide bar is completed, the guide bar is removed, and the bending forming operation is performed, it is necessary to return the rotating mechanism 2 and the bending die mechanism 3 to the state before bending. When the rotating disk 21 rotates to the initial position, it will drive the connecting member 33 to rotate to the initial position. At this time, the bending die 32 still has a certain rotation angle on the horizontal plane; by driving the return member 34 to move longitudinally toward the mounting seat 31, the opening of the return member 34 is first contacted with the limiting portion 311 on the mounting seat 31, As the return member 34 moves further toward the direction approaching the mounting seat 31, the opening of the return member 34 cooperates with the limiting member to rotate the mounting seat 31 and the bending mold 32 until the limiting groove of the bending mold 32 is parallel to the horizontal direction, thereby resetting the bending mold 32 to facilitate the placement of the guide strip, which is easier to operate and easier to control. After the guide strip is placed, the return member 34 moves longitudinally away from the mounting seat 31 until it does not interfere with the mounting seat 31, and then the bending operation is performed.
[0035] Specifically, in some embodiments of the utility model, the limiting portion 311 may have an arc surface and two planes located on both sides of the arc surface, and the return member 34 may be composed of two longitudinal plates arranged at intervals along the transverse direction and a transverse plate located between the two vertical plates, and form an opening matching the limiting portion 311; the return member 34 moves longitudinally toward the direction close to the mounting seat 31, first, one of the longitudinal plates of the return member 34 contacts the arc surface of the limiting portion 311, and with further movement, one of the longitudinal plates moves along the arc surface, pushing the mounting seat 31 to rotate until it slides over the arc surface and One of the planes contacts, thereby achieving the reset of the bending mold 32; further, in some embodiments of the utility model, the two longitudinal plates are formed with an arc chamfer at one end close to the mounting seat 31, which plays a guiding role, and the cooperation between the return member 34 and the limit portion 311 is smoother; the utility model does not specifically limit the second driving component that drives the return member 34 to move longitudinally, and can be a cylinder, an oil cylinder, an electric telescopic rod or a ball screw linear driving component, etc., which can drive the return member 34 to move longitudinally; in some embodiments of the utility model, the second driving component is a cylinder 35.
[0036] In some embodiments of the present invention, please refer to Figure 1The clamping part 22 has a movable stroke along the radial direction of the rotary disk 21 relative to the rotary disk 21. By driving the clamping part 22 to move along the radial direction of the rotary disk 21 relative to the rotary disk 21, the distance between the end of the guide bar and the set position of the guide bar in the horizontal direction and the vertical direction is adjusted to match the production requirements; the structure is simple and easy to control.
[0037] It can be understood that the present invention does not make any specific limitation on the structure of the clamping portion 22, and it only needs to be able to clamp and release the end of the guide bar; in some embodiments of the present invention, the clamping portion 22 includes a second base plate, a second limit block, a second clamping block and a third drive assembly, the second limit block and the second clamping block are longitudinally arranged on the second base plate, the second limit block is fixedly connected to the second base plate, the second clamping block is longitudinally slidably connected to the second base plate, a storage groove parallel to the transverse direction can be formed between the second clamping block and the second limit block for placing the guide bar, and the second drive assembly is used to drive the second clamping block to move longitudinally to clamp and release the guide bar; the structure is simple and easy to control; the present invention does not make any specific limitation on the third drive assembly, and it can be a cylinder, an oil cylinder, an electric telescopic rod or a ball screw linear drive assembly, etc., which can drive the second clamping block to move longitudinally; in some embodiments of the present invention, the third drive assembly is a second oil cylinder. Furthermore, in some embodiments of the utility model, one side portion of the second base plate is connected to the turntable 21 in a radial sliding manner along the turntable 21, and a fourth drive assembly is provided on the turntable 21 to drive the clamping portion 22 to move radially relative to the turntable 21 along the turntable 21; the utility model does not specifically limit the fourth drive assembly, which may be a cylinder, an oil cylinder, an electric telescopic rod or a ball screw linear drive assembly, etc., which can drive the second base plate to move radially along the turntable 21; in some embodiments of the utility model, the fourth drive assembly is a third oil cylinder 23.
[0038] In some embodiments of the utility model, the slewing mechanism 2 further includes a first support frame 24 and a fifth drive assembly, the turntable 21 is rotatably mounted on the first support frame 24, and the fifth drive assembly drives the turntable 21 to reciprocate; the operation is simple and easy to control. Further, in some embodiments of the utility model, the fifth drive assembly includes a motor, the motor is fixedly mounted on the first support frame 24, and the output shaft of the motor is connected to the turntable 21 through a gear; the rotation of the turntable 21 is controlled by the motor and the gear, the rotation is stable, and it is easy to control accurately.
[0039] In some embodiments of the utility model, two first rails 25 are provided below the first support frame 24, the two first rails 25 are arranged at intervals in the longitudinal direction, each first rail 25 extends in the transverse direction, and the first support frame 24 is slidably connected to the two first rails 25; thereby realizing the transverse movement of the rotary mechanism 2. Furthermore, in some embodiments of the utility model, the first support frame 24 is driven by a sixth drive assembly, which is easy to operate and convenient to control; the utility model does not specifically limit the sixth drive assembly, which can be a cylinder, an oil cylinder, an electric telescopic rod or a ball screw linear drive assembly, etc., which can drive the first support frame 24 to move along the two first rails 25; in some embodiments of the utility model, the sixth drive assembly is a ball screw linear drive assembly, which is convenient for accurately controlling the movement of the first support frame 24.
[0040] In some embodiments of the present invention, please refer to Figures 1 to 4 , and further includes a base 4, the base 4 is used to install the clamping mechanism 1, the rotating mechanism 2 and the bending die mechanism 3. The base 4 provides an installation platform for the clamping mechanism 1, the rotating mechanism 2 and the bending die mechanism 3, which is convenient for integration.
[0041] In some embodiments of the present invention, please refer to Figure 1 and Figure 3 The base 4 is tilted, and one end of the base 4 in the longitudinal direction is higher than the other end. By tilting the base 4, the clamping mechanism 1, the rotating mechanism 2 and the bending die mechanism 3 on the base 4 can be tilted at the same angle toward the other end of the base 4 in the longitudinal direction, which is convenient for loading and unloading the guide strip.
[0042] Some embodiments of the utility model further include a robot for loading and unloading the guide strips. By loading and unloading the guide strips by the robot, the loading and unloading of the guide strips can be automated, which is beneficial to further reduce labor costs and improve production efficiency.
[0043] In some embodiments of the present invention, please refer to Figure 1 , Figure 2 as well as Figure 4 The clamping mechanism 1, the rotating mechanism 2 and the bending die mechanism 3 are correspondingly configured as a forming group, and two forming groups are provided, and the two forming groups are arranged opposite to each other in the transverse direction to bend and form the two ends of the guide bar. The two forming groups can bend and form the two ends of the guide bar (the same guide bar or two guide bars aligned side by side) at the same time, which is conducive to further improving production efficiency; it can be understood that the rotating disks 21 on the two rotating mechanisms 2 can rotate in opposite directions to form a guide bar with two ends bent in opposite directions.
[0044] In some embodiments of the utility model, the clamping mechanism 1 is installed movably in the transverse direction to form guide bars of different models. The clamping mechanism 1 is installed movably in the transverse direction, and the spacing between two clamping mechanisms 1 can be adjusted according to the guide bar model produced, so that the straight section length of the bent guide bar matches the production requirements, thereby forming guide bars of different models, which has a wider range of applications.
[0045] In some embodiments of the utility model, the clamping mechanism 1 includes a clamping portion 11 and a second support frame 12, the clamping portion 11 is installed on the second support frame 12, two second rails 13 are provided below the second support frame 12, the two second rails 13 are arranged at intervals along the longitudinal direction, each second rail 13 extends in the transverse direction, and the second support frame 12 is slidably connected to the two second rails 13; thereby realizing the transverse movement of the clamping mechanism 1. Further, in some embodiments of the utility model, the second support frame 12 is driven by a seventh drive assembly, which is easy to operate and control; the utility model does not specifically limit the seventh drive assembly, which can be a cylinder, an oil cylinder, an electric telescopic rod or a ball screw linear drive assembly, etc., which can drive the second support frame 12 to move along the two second rails 13; in some embodiments of the utility model, the seventh drive assembly is a ball screw linear drive assembly, which is convenient for accurately controlling the movement of the second support frame 12.
[0046] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the concept of the utility model, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.
Claims
1. A guide bar forming machine, characterized in that: include: A clamping mechanism (1) for fixing the guide bar; A rotating mechanism (2) is movably mounted on one side of the clamping mechanism (1) in a transverse direction, the rotating mechanism (2) comprising a rotating disk (21) and a clamping portion (22) movably mounted on the rotating disk (21), the clamping portion (22) being used to clamp the end of the guide bar, the rotating disk (21) being rotatably mounted to bend the guide bar; and A bending die mechanism (3) is movably mounted between the clamping mechanism (1) and the rotating mechanism (2), the bending die mechanism (3) comprising a mounting seat (31) and a bending die (32) mounted on the mounting seat (31), the bending die (32) being used to limit the position of the guide bar and bend it into shape, the bending die (32) having a bending length and a bending width; The bending molds (32) with different bending lengths and / or bending widths can be selected and detachably connected to the mounting seat (31) to form different bending combinations for bending and forming guide bars of different models.
2. The guide bar forming machine according to claim 1, characterized in that: The bending mold (32) and the mounting seat (31) are detachably connected via bolts.
3. The guide bar forming machine according to claim 1, characterized in that: The bending die mechanism (3) further comprises a connecting member (33), the mounting seat (31) is rotatably arranged on the connecting member (33), and the connecting member (33) is connected to the rotating disk (21).
4. The guide bar forming machine according to claim 3, characterized in that: The mounting seat (31) has a limiting portion (311); the bending die mechanism (3) also includes a return member (34) movably installed along the longitudinal direction, and the return member (34) has an opening matching the limiting portion (311) so as to enable the bending die (32) to rotate until the limiting groove of the bending die (32) is parallel to the transverse direction.
5. The guide bar forming machine according to claim 1, characterized in that: The clamping portion (22) has a movable stroke relative to the rotary disk (21) along the radial direction of the rotary disk (21).
6. The guide bar forming machine according to claim 1, characterized in that: It also comprises a base (4), wherein the base (4) is used to install the clamping mechanism (1), the rotating mechanism (2) and the bending die mechanism (3).
7. The guide bar forming machine according to claim 6, characterized in that: The base (4) is arranged at an angle, and one end of the base (4) in the longitudinal direction is higher than the other end.
8. The guide bar forming machine according to claim 1, characterized in that: It also includes a robot for loading and unloading the guide strips.
9. The guide bar forming machine according to claim 1, characterized in that: The clamping mechanism (1), the rotating mechanism (2) and the bending die mechanism (3) are correspondingly arranged as a forming group, two forming groups are provided, and the two forming groups are arranged opposite to each other in the transverse direction to bend and form the two ends of the guide bar.
10. The guide bar forming machine according to claim 9, characterized in that: The clamping mechanism (1) is movably installed in the transverse direction to form guide bars of different models.