A tooling fixture for mounting and fixing gears and racks

Abstract

This invention relates to the field of fixture technology, specifically to a tooling clamp for fixing and installing a gear and rack, comprising a workpiece, a base plate, a rack, and a gear; the workpiece is mounted on the base plate, the rack is connected to the workpiece, and the gear meshes with the rack; the invention is characterized by further comprising a clamping mechanism and an adjusting mechanism, the clamping mechanism being mounted on both sides of the base plate, and the adjusting mechanism being mounted on the base plate and located between the two clamping mechanisms, the adjusting mechanism being connected to the clamping mechanism through the rack and gear; a lever is formed by a rocker arm and a fulcrum to continuously push the pressing block, and the pressing block is then used to push the clamping plate to clamp the rack, and the upward displacement of the pressing block is restricted by a meshing block, so that only the rocker arm outputs force to press the rack, and the rack's counterforce cannot push the pressing block to move, thereby better clamping and fixing the rack.

Description

Technical Field

[0001] This invention relates to the field of fixture technology, and more specifically to a tooling fixture for mounting and fixing gears and racks. Background Technology

[0002] Gears and racks are extremely important components in the field of transmission, and the degree of fit between them is directly proportional to the smooth operation of the transmission mechanism. To make the fit between gears and racks more precise, existing technical solutions involve calculating the fit clearance, using a fixing tool to fix the rack to the workpiece, connecting the gear to the fixing rod, and then fitting the gear and rack together. This improves the fit accuracy of the gears and racks, making the transmission mechanism run more smoothly and also extending the service life of the gears and racks.

[0003] In the existing gear and rack assembly process, since the gear and rack are installed independently, they need to be re-assembled after installation. For precision linear transmission modules, which are commonly used in the production of high-precision equipment, the use of linear modules is becoming increasingly widespread with the development of high-precision industries. When producing linear modules, it is necessary to ensure a tight fit between the gear and rack to guarantee the accuracy of the linear module. However, installing the gear and rack on the linear module is extremely time-consuming and labor-intensive, greatly increasing production time and costs. Existing gear and rack mounting fixtures cannot simultaneously fix the gear and rack. Therefore, it is necessary to simultaneously install the gear and rack to improve the production efficiency of linear production modules.

[0004] In view of the above, in order to overcome the above technical problems, the present invention designs a tooling fixture for mounting and fixing gears and racks, thus solving the above technical problems. Summary of the Invention

[0005] The technical objective of this invention is to address the significant time and effort required for the installation and fixing of high-precision linear modules using gears and racks, which greatly increases production costs and time. Therefore, it is necessary to achieve simultaneous fixing and installation of gears and racks while ensuring their precision.

[0006] To achieve the above-mentioned technical objectives, the present invention provides the following technical solution:

[0007] This invention provides a tooling fixture for mounting and fixing gears and racks, comprising a workpiece, a base plate, a rack, and a gear. The workpiece is mounted on the base plate, the rack is connected to the workpiece, and the gear meshes with the rack. The fixture also includes a clamping mechanism and an adjusting mechanism. The clamping mechanism is mounted on both sides of the base plate, and the adjusting mechanism is mounted on the base plate and located between the two clamping mechanisms. The adjusting mechanism is connected to the clamping mechanism via the rack and gear. The clamping mechanism drives a transmission wheel to rotate unidirectionally by moving a rocker arm downwards in the horizontal plane. The rotation of the transmission wheel drives a pressing block to move perpendicular to the horizontal plane. The downward movement of the pressing block pushes a clamping plate to move unidirectionally along the rack direction, and the movement of the clamping plate pushes the rack to move along the vertical direction of the pressing block.

[0008] The clamping mechanism includes a sliding plate, a clamping plate, a pressing block, a transmission wheel, a swing arm, a bracket, a fixing frame, a shift fork, and a meshing block. The sliding plate is slidably mounted on the base plate, and the clamping plate is mounted above the sliding plate, or alternatively, on the side of the sliding plate. The pressing block is slidably connected to the clamping plate, allowing it to push the clamping plate to press against the rack when moving downwards. One side of the transmission wheel meshes with the pressing block in the horizontal direction, driving the pressing block to move during rotation. The other side of the transmission wheel is slidably connected to the swing arm within an acute angle on the horizontal plane. Both the swing arm and the transmission wheel are rotatably mounted inside the bracket, with the swing arm forming a fulcrum through the bracket. A lever is used to allow a large force to be output with only a small force when squeezing the rack. At the same time, the rocker arm cooperates with the one-way block to realize the double lever structure of the rocker arm. The double lever structure further increases the output force, which in turn increases the pressure on the rack, making the rack more stable when fixed. The bracket is installed on the upper end face of the fixed frame, the fixed frame is installed on the base plate, the shift fork is vertically installed inside the fixed frame, and the meshing block is installed inside the shift fork and slidably connected to the fixed frame. After clamping is completed, the shift fork drives the meshing block to disengage from the squeezing block, so that the clamping plate ends the clamping of the rack.

[0009] The double-lever structure formed by the combination of the rocker arm and the one-way block increases the thrust applied to the extrusion block. At the same time, when the extrusion block moves downward, the meshing block engages with the extrusion block to restrict its upward movement. This prevents the rocker arm from being affected by the upward thrust of the extrusion block, thus allowing continuous pressure to be applied to the extrusion block and making the clamping plate more securely fixed to the rack.

[0010] The clamping plate has multiple meshing grooves on one side, which increase the contact area between the clamping plate and the rack, making the rack more stable. The meshing grooves mesh with the rack, and the depth of the meshing grooves is greater than the height of the rack teeth. This ensures that the tooth tips will not contact the meshing grooves during the clamping plate's compression of the rack, thus protecting the clamping plate and the rack. The clamping plate has an upwardly inclined compression groove on the other side, which allows the compression block to push the clamping plate towards the rack after moving downward.

[0011] The clamping plate limits the position of the rack through the meshing groove, and under the push of the pressing block, the clamping plate presses the rack, thereby firmly fixing the rack to the workpiece.

[0012] The extrusion block has a wedge-shaped structure, which reduces the resistance encountered when the extrusion block moves downward. At the same time, the inclined surface can push out the clamping plate, allowing the clamping plate to extrude the rack. The lower part of the extrusion block has multiple fixing grooves symmetrically arranged on the left and right sides. The fixing grooves are staggered, and multiple locking slots are opened above the fixing grooves. The staggered fixing grooves reduce the single descent height of the extrusion block during its downward movement, thereby providing more accuracy when adjusting the rack curvature. The locking slots are located in the middle of the left and right fixing grooves, so that the meshing block does not restrict the locking slots during the downward movement of the extrusion block. This allows the meshing block to be pushed by the transmission wheel without getting stuck.

[0013] After the extrusion block moves downward, the meshing block locks it in place, preventing it from moving upward. When the extrusion block moves downward again, it pushes one side of the meshing block to contract, while the other side of the meshing block is released, fixing the extrusion block in place once more. This reduces the single movement distance of the extrusion block.

[0014] The swing arm has a rotating block at its front end, and a through hole at its rear end. The swing arm is connected to the rotating block, allowing the swing arm to rotate around the through hole, thus providing greater thrust at the front end of the rotating block. The rotating block has a groove at its front end, and a one-way block is rotatably installed in the groove. The one-way block has a through hole at its front end, allowing it to rotate around the through hole, thus providing greater thrust at its front end. When the one-way block is horizontal, its rear end is in contact with the rotating block; when the one-way block is vertical, its front end is in contact with the rotating block. This prevents the one-way block from moving when the transmission wheel reverses. The one-way block can only affect the rotation of the transmission wheel when the swing arm moves downward. A pusher is installed below the rear end of the one-way block. The pusher pushes the one-way block, preventing it from remaining vertical and thus preventing it from affecting the transmission wheel. The pusher is connected to the bottom of the groove in the rotating block via a spring.

[0015] The pendulum tilts downwards in its normal state. The pendulum and the support work together to form a lever. The one-way block and the rotating block work together to form another lever. The double lever mechanism makes the thrust of the pendulum smaller, so that a larger thrust can be provided to the transmission wheel. The transmission wheel then transmits the thrust to the compression block.

[0016] The front end of the fixed frame is provided with a sliding groove, which is used to limit the displacement of the extrusion block. Multiple limiting grooves are symmetrically arranged at the bottom of the sliding groove. The limiting grooves are staggered, which shortens the single descent height of the extrusion block, thereby more accurately controlling the descent height of the extrusion block and adjusting the feed distance of the clamping plate. The limiting grooves are slidably connected to the meshing block.

[0017] The fixing bracket is used to fix the clamping mechanism and counteract the thrust from the rack and the upward pull of the squeezing block, so that the clamping plate can stably clamp the rack.

[0018] The shift fork has a "mountain" shaped structure, which allows it to pull the meshing blocks on both sides during movement. Guide rails are provided on both sides of the shift fork to prevent it from deviating during movement. The shift fork is connected to the baffle through the guide rails. A support plate is fixedly installed on one side of the baffle. The baffle is used to compress the spring, so that the spring can push the meshing block to engage with the compression block. The support plate is rotatably connected to the pull rod.

[0019] After the fixing is completed, pull the lever to disengage the engaging block from the squeezing block, thereby removing the restriction on the squeezing block. When the squeezing block is lifted, push the lever again to return the engaging block to its original position, so that the squeezing block can be restricted again.

[0020] The adjusting mechanism includes a fixed disc, a fixed plate, and a telescopic rod. The fixed disc is fixedly mounted on the base plate, and the fixed plate is mounted on the fixed disc. The telescopic rod is installed inside the fixed disc, and its upper part meshes with a gear, allowing the gear's rotation to drive the telescopic rod's rotation. The lower part of the telescopic rod meshes with the fixed disc, allowing the telescopic rod's rotation to cooperate with the fixed disc, thus enabling the telescopic rod to move. One end of the fixed rod is located above the telescopic rod; when the fixed rod is pressed down, it can push the telescopic rod to retract and mesh with the gear. The other end of the fixed rod is slidably mounted on the inner wall of the workpiece, allowing the fixed rod to slide within the workpiece. One side of the fixed plate is flat, which facilitates determining the installation direction of the fixed disc. The upper surface of the fixed disc has multiple blocking grooves arranged in an array, which are used to mesh with a push plate. Engaging plates are installed on both sides inside the fixed disc. Each engagement plate has a rack installed on only one side, which meshes with the telescopic rod and restricts the telescopic rod's movement direction. The engagement plate is perpendicular to the rack, ensuring the telescopic rod can only move along the direction perpendicular to the rack. The engagement plate meshes with the telescopic rod.

[0021] The telescopic rod is used to fix the gear horizontally on the fixed plate. When the fixed rod is installed with the gear using heat fitting, the telescopic rod is compressed so that the gear and the fixed rod can cooperate. This allows the fixed rod to directly cooperate with the rack after the gear is installed, making installation easier.

[0022] The fixed plate has a semi-circular structure, which ensures that the spring always pushes the push plate towards the center of the circle. The plane of the fixed plate is parallel to the rack, so that the push plate will not exert reverse force when pushing the gear. The fixed plate is connected to the push plate by the spring. The push plate is symmetrically installed on both sides inside the fixed plate, pushing the gear from two directions to keep the gear moving vertically. The bottom of the push plate is provided with multiple triangular protrusions, and the triangular protrusions mesh with the blocking grooves, so that the push plate is hindered when it is pushed forward, reducing the impact on the telescopic rod.

[0023] The push plate is used to drive the gear and make the gear move along the vertical line of the rack. The protrusion at the bottom of the push plate hinders the movement of the push plate, thereby reducing the impact on the telescopic rod. It also allows the telescopic rod to restrict the gear even after the restriction on the gear is removed.

[0024] The telescopic rod consists of two telescopic rods of different sizes, one above the other, so that the fixed rod can compress and retract the telescopic rod when it is installed with the gear, thus not affecting the assembly of the gear. The gear is installed at the bottom of the telescopic rod, and the rotation of the gear drives the telescopic rod to rotate, thereby cooperating with the fixed plate to drive the gear to move. A guide post is installed on one side of the upper telescopic rod, and a guide sleeve is provided on the lower telescopic rod. The guide post and the guide sleeve are slidably connected.

[0025] The telescopic rod is used to fix the gear and drive it forward while the gear rotates, making the gear and rack mesh more tightly and further fixing the gear. At the same time, when the fixing rod is pressed down, it can be pushed by the fixing rod to make the fixing rod mesh with the gear.

[0026] The beneficial effects of this invention are as follows:

[0027] 1. This invention solves the problem of gears with fixed rods being difficult to move during gear and rack engagement by setting an adjustment mechanism and using a push rod. This makes it difficult for the gears and racks to engage, thus enabling the gears and racks to engage faster and increasing the engagement accuracy. This makes it more convenient and faster to install gears and racks in linear modules.

[0028] 2. This invention solves the problem of needing to correct the curvature of the rack during installation, especially for long racks, by setting up a clamping mechanism and using a squeezing block, thereby making the rack more convenient to correct its curvature.

[0029] 3. This invention solves the problem of racks being prone to loosening during fixed installation, which affects the gear-rack mating accuracy, by setting a rocker arm and using a one-way block, thereby making the rack more stable during installation. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] The above and other aspects of the invention will now be described by way of example only, with reference to the accompanying drawings, in which:

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 This is a cross-sectional view of the clamping mechanism of the present invention;

[0034] Figure 3 This is a cross-sectional view of the clamping plate of the present invention;

[0035] Figure 4 This is a schematic diagram of the extrusion block structure of the present invention;

[0036] Figure 5 This is a cross-sectional view of the pendulum rod of the present invention;

[0037] Figure 6 This is a schematic diagram of the fixing frame structure of the present invention;

[0038] Figure 7 This is a schematic diagram of the shift fork structure of the present invention;

[0039] Figure 8 This is a cross-sectional view of the adjustment mechanism of the present invention;

[0040] Figure 9 This is a cross-sectional view of the fixed disk of the present invention;

[0041] Figure 10 This is a schematic diagram of the pusher plate structure of the present invention;

[0042] Figure 11 This is a schematic diagram of the telescopic rod structure of the present invention.

[0043] In the diagram: 1. Workpiece; 2. Base plate; 3. Rack; 4. Gear; 5. Clamping mechanism; 51. Slide plate; 52. Clamping plate; 521. Engaging groove; 522. Extrusion groove; 53. Extrusion block; 531. Fixing groove; 532. Slot; 54. Transmission wheel; 55. Rocker arm; 551. Rotating block; 552. One-way block; 553. Push block; 56. Bracket; 57. Fixing frame; 571. Slide groove; 572. Limiting groove; 58. Shift fork; 581. Guide rail; 582. Baffle; 583. Support plate; 584. Pull rod; 59. Engaging block; 6. Adjustment mechanism; 61. Fixing disc; 611. Blocking groove; 612. Engaging plate; 62. Fixing plate; 621. Push plate; 63. Telescopic rod; 631. Guide post; 632. Guide sleeve; 64. Fixing rod. Detailed Implementation

[0044] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0045] like Figures 1 to 11 As shown, a tooling fixture for mounting and fixing gears and racks includes a workpiece 1, a base plate 2, a rack 3, and a gear 4. The workpiece 1 is mounted on the base plate 2, the rack 3 is connected to the workpiece 1, and the gear 4 meshes with the rack 3. The fixture also includes a clamping mechanism 5 and an adjusting mechanism 6. The clamping mechanism 5 is mounted on both sides of the base plate 2, and the adjusting mechanism 6 is mounted on the base plate 2 and located between the two clamping mechanisms 5. The adjusting mechanism 6 is connected to the clamping mechanism 5 through the rack 3 and the gear 4. The clamping mechanism 5 drives the transmission wheel 54 to rotate unidirectionally by moving the swing arm 55 downwards in the horizontal plane. The rotation of the transmission wheel 54 drives the pressing block 53 to move perpendicular to the horizontal plane. The downward movement of the pressing block 53 pushes the clamping plate 52 to move unidirectionally along the rack 3, and the movement of the clamping plate 52 pushes the rack 3 to move along the vertical direction of the pressing block 53.

[0046] like Figures 1 to 7As shown, the clamping mechanism 5 includes a sliding plate 51, a clamping plate 52, a pressing block 53, a transmission wheel 54, a swing arm 55, a bracket 56, a fixing frame 57, a shift fork 58, and a meshing block 59. The sliding plate 51 is slidably mounted on both sides of the base plate 2, the clamping plate 52 is slidably mounted above the sliding plate 51, the pressing block 53 is slidably connected to the clamping plate 52, one side of the transmission wheel 54 meshes with the pressing block 53 in the horizontal direction, and the other side of the transmission wheel 54 is slidably connected to the swing arm 55 within an acute angle in the horizontal plane, so that the swing arm 55 can drive the transmission wheel 54 to rotate at a certain angle, thereby achieving the purpose of unidirectional driving. The swing arm 55 and the transmission wheel 54 are both rotatably mounted inside the bracket 56. The one-way block 552, which is rotatably connected to the front end of the swing arm 55, and the transmission wheel 54 are slidably connected at a specific height. The swing arm 55 forms a lever with the bracket 56 as the fulcrum. At the same time, the swing arm 55 cooperates with the one-way block 552 to realize the double lever structure of the swing arm 55. The lower part of the bracket (56) is mounted on the upper end surface of the fixed frame 57. The fixed frame 57 is mounted on the base plate 2. The shift fork 58 is vertically mounted inside the fixed frame 57. The meshing block 59 is mounted inside the shift fork 58 and is slidably connected to the fixed frame 57.

[0047] When clamping the rack 3, the rocker arm 55 is rotated around the fulcrum, so that the force output to the transmission wheel 54 is amplified by the rocker arm 55. The rotation of the transmission wheel 54 drives the pressing block 53 to move downward, which pushes the clamping plate 52 towards the rack 3 by pressing the clamping plate 52. The meshing block 59 located in the fixed frame 57 jams the pressing block 53, so that the pressing block 53 can only move in one direction, thereby making the clamping plate 52 continuously press and clamp the rack 3.

[0048] like Figure 2 and Figure 3 As shown, the clamping plate 52 has multiple meshing grooves 521 arrayed on one side. The meshing grooves 521 are used to mesh with the rack 3, making it less likely for the rack 3 to loosen when clamping it, thereby improving the clamping efficiency of the clamping mechanism 5. The meshing grooves 521 mesh with the rack 3, and the depth of the meshing grooves 521 is greater than the tooth height of the rack 3, so that after the rack 3 meshes with the clamping plate 52, the tooth tip of the rack 3 will not directly contact the bottom of the meshing groove 521, thus not reducing the contact area between the clamping plate 52 and the rack 3, making the clamping plate 52 clamp the rack 3 more firmly. The clamping plate 52 has an upwardly inclined extrusion groove 522 on the other side. The upwardly inclined extrusion groove 522 causes the extrusion block 53 to push the clamping plate 52 towards the rack 3 during the downward movement.

[0049] When the engaging block 59 moves downward, the engaging block 59 presses the squeezing groove 522, causing the squeezing groove 522 to push the clamping plate 52 towards the rack 3. At the same time, the clamping plate 52 drives the sliding plate 51 towards the rack 3, and the counter-thrust from the rack 3 is converted into an upward thrust through the squeezing groove 522, thereby reducing the horizontal thrust of the rack 3 on the fixing frame 57.

[0050] like Figure 2 and Figure 4 As shown, the extrusion block 53 has a wedge-shaped structure. This wedge shape reduces resistance during downward movement and allows the inclined surface to push the clamping plate 52, thus increasing the efficiency of the thrust. Multiple fixing slots 531 are symmetrically arranged on the lower part of the extrusion block 53. These slots are staggered, and multiple locking slots 532 are located above each slot. The fixing slots 531 prevent the extrusion block 53 from moving upwards when subjected to an upward thrust due to their engagement with the meshing block 59. The clamping plate 52 will not loosen its grip on the rack 3, and the multiple fixed grooves 531 that are symmetrically and alternately opened on the left and right sides can shorten the path that the extrusion block 53 is stuck during its downward movement, thereby more accurately adjusting the feed distance of the clamping plate 52, which helps to adjust the curvature of the rack 3 and make the rack 3 more horizontal when installed. The slot 532 is located in the middle of the left and right fixed grooves 531. During the downward movement of the extrusion block 53, since the meshing block 59 cannot enter the slot 532, it prevents the extrusion block 53 from being stuck by the meshing block 59.

[0051] When the transmission wheel 54 rotates, it drives the extrusion block 53 to move downward. After the extrusion block 53 moves downward, the meshing block 59 engages with the fixing groove 531 on the extrusion block 53. If the extrusion block 53 continues to move downward, it pushes the meshing block 59 to contract. When the extrusion block 53 stops moving downward, it will be subjected to an upward thrust under the action of the rack 3. At this time, the meshing block 59 fixes the extrusion block 53, preventing it from moving upward, so that the pressure of the clamping plate 52 on the rack 3 will not dissipate.

[0052] like Figure 2 and Figure 5As shown, a rotating block 551 is provided at the front end of the swing rod 55, and a through hole is provided at the rear end of the rotating block 551. The swing rod 55 can rotate around the through hole, thus forming a lever. A groove is provided at the front end of the rotating block 551, and a one-way block 552 is rotatably installed in the groove. A through hole is provided at the front end of the one-way block 552, and the one-way block 552 can rotate through the through hole, thus forming a lever as well. When the one-way block 552 is horizontal, its rear end is in contact with the rotating block 551. During the downward movement of the swing rod 55, the rotating block 551 located at the front end of the swing rod 55 rotates upward. Since the swing rod 55 is a lever, the force output by the rotating block 551 increases, and because the one-way block 551... 52 is also a lever, and the rear end of the one-way block 552 is in contact with the rotating block 551, so that the rotating block 551 pushes the one-way block 552 to drive the transmission wheel 54 to rotate during the upward movement, and the output force is increased again. When the one-way block 552 is vertical, the front end of the one-way block 552 is in contact with the rotating block 551, so that when the rotating block 551 moves downward, the one-way block 552 retracts into the rotating block 551 around the fulcrum under the action of the transmission wheel 54, so as not to affect the transmission wheel 54. A push block 553 is installed below the rear end of the one-way block 552. The push block 553 prevents the one-way block 552 from failing to function after it is perpendicular to the ground, so that the one-way block 552 can always maintain its function. The push block 553 is connected to the bottom of the groove of the rotating block 551 by a spring.

[0053] When the swing arm 55 rotates downward, the rotating block 551 moves in the opposite direction to the swing arm 55. At the same time as the swing arm moves upward, the one-way block 552 inside the rotating block 551, in cooperation with the transmission wheel 54, has its rear end pressed against the inner wall of the rotating block 551. This causes the rotating block 551 to drive the one-way block 552 to move upward, which in turn drives the transmission wheel 54 to move. The transmission wheel 54 then drives the pressing block 53 to move. When the swing arm 55 moves upward, the rotating block 551 moves downward, and at the same time, the one-way block 552 retracts into the rotating block 551 under the action of the transmission wheel 54, thus not affecting the movement of the transmission wheel 54.

[0054] like Figure 2 and Figure 6As shown, the front end of the fixing frame 57 is provided with a sliding groove 571. The sliding groove 571 is used to limit the lateral displacement of the extrusion block 53, so that the extrusion block 53 moves straight downward, thus not wasting thrust. Multiple limiting grooves 572 are symmetrically arranged at the bottom of the sliding groove 571. The limiting grooves 572 are staggered. When the extrusion block 53 moves downward, the engaging block 59 in the limiting groove 572 extends to fix the extrusion block 53. The symmetrically staggered limiting grooves 572 shorten the fixed path of the extrusion block 53 during the descent, thereby improving the movement accuracy of the extrusion block 53 and making the movement of the clamping plate 52 more precise. The limiting groove 572 is slidably connected to the engaging block 59.

[0055] When the extrusion block 53 moves downward, the slide groove 571 on the fixing frame 57 fixes both sides of the extrusion block 53, so that the extrusion block 53 always moves in a straight line. The meshing block 59 in the fixing frame 57 extends out and jams the extrusion block 53, so that the counter-force from the rack 3 cannot push the extrusion block 53 upward, thereby making the clamping plate 52 always maintain pressure on the rack 3.

[0056] like Figure 2 and Figure 7 As shown, the shift fork 58 has a "mountain" shaped structure. The "mountain" shape allows the shift fork 58 to pull the meshing blocks 59 on both sides simultaneously when it moves, so that the meshing blocks 59 can disengage from the pressing block 53, thereby allowing the pressing block 53 to move upward and return to its original position. Guide rails 581 are provided on both sides of the shift fork 58 to guide the movement direction of the shift fork 58, making the operation of the shift fork 58 more stable. The shift fork 58 is connected to the baffle 582 through the guide rails 581. A support plate 583 is fixedly installed on one side of the baffle 582. The support plate 583 uses a compression spring to keep the meshing block 59 in the extended state, so that it can engage with the pressing block 53. The support plate 583 is connected to the pull rod 584.

[0057] When the rack 3 is fixed, the upward thrust from the rack 3 pushes the pressing block 53 to move upward. The pressing block 53 is prevented from moving upward by the engagement of the meshing block 59. After the rack 3 is fixed, the pull rod 584 is pulled so that the shift fork 58 drives the meshing block 59 to disengage from the pressing block 53, so that the pressing block 53 can move upward. After the pressing block 53 returns to its original position, the pull rod 584 is pushed again so that the meshing block 59 is kept in the extended state again.

[0058] The adjustment mechanism 6 includes a fixed disk 61, a fixed plate 62, a telescopic rod 63, and a fixed rod 64. The fixed disk 61 is fixedly installed on the base plate, the fixed plate 62 is installed on the fixed disk 61, the telescopic rod 63 is installed inside the fixed disk 61, and the upper part of the telescopic rod 63 meshes with the gear 4, so that when the gear 4 rotates under the drive of the rack 3, it can drive the telescopic rod 63 to rotate simultaneously. The lower part of the telescopic rod 63 meshes with the fixed disk 61, and when the upper part of the telescopic rod 63 rotates, it can drive the lower part of the telescopic rod 63 to rotate, so that it can move after cooperating with the fixed plate 62. One end of the fixed rod 64 is located above the telescopic rod 63. When the fixed rod 64 is pressed down, it can cause the telescopic rod 63 to retract and mesh with the gear 4. The other end of the fixed rod 64 is slidably installed on the inner wall of the workpiece 1. When the fixed rod 64 is pressed down to a certain depth, the fixed rod 64 is locked with the workpiece 1, thereby locking the rack 3 and gear 4 installed on the workpiece 1. One side of the fixed plate 61 is flat, which facilitates the determination of the installation direction of the fixed plate 61. By comparing it with the rack 3, the installation position can be determined more quickly. The upper end face of the fixed plate 61 has multiple blocking grooves 611 arranged in an array. The blocking grooves 611 can mesh with the push plate 621, which reduces the force of the push plate 621 pushing the gear 4, thereby increasing the effect of the telescopic rod 63 on the gear 4. Thus, the gear 4 can still be fixed after the restriction of the telescopic rod 63 on the gear 4 is removed. The fixed plate 612 is installed on both sides inside the fixed plate 61. The rack 3 is installed on only one side of the meshing plate 612. After the meshing plate 612 cooperates with the telescopic rod 63, the rotation of the telescopic rod 63 can drive the telescopic rod 63 to move. The meshing plate 612 is perpendicular to the rack 3, and the two meshing plates 612 perpendicular to the rack 3 can restrict the direction of movement of the telescopic rod 63, so that the telescopic rod 63 can only move along the direction perpendicular to the rack 3. The meshing plate 612 meshes with the telescopic rod 63.

[0059] Gear 4 is mounted on fixed plate 61 via telescopic rod 63, and push plate 621 is restricted by blocking groove 611, so that the force pushing gear 4 mainly comes from telescopic rod 63. The cooperation between meshing plate 612 inside fixed plate 61 and telescopic rod 63 allows telescopic rod 63 to move along meshing plate 612 during rotation. After rack 3 is installed, fixing rod 64 is pressed down to fix gear 4 instead of telescopic rod 63, thereby fixing gear 4 and rack 3.

[0060] like Figure 8 and Figure 10As shown, the fixing plate 62 has a semi-circular structure, and the plane of the fixing plate 62 is parallel to the rack 3. The semi-circular structure and the fact that the bottom of the fixing plate 62 is parallel to the rack 3 ensure that when the push plate 621 pushes the gear 4, the gear 4 is always subjected to a force along the perpendicular direction of the rack 3. The fixing plate 62 is connected to the push plate 621 by a spring. The push plate 621 is symmetrically installed on both sides inside the fixing plate 62, and the pushing force of the push plate 621 cannot make the gear 4 rotate, thereby preventing the telescopic rod from rotating and thus preventing the gear 4 from moving. The bottom of the push plate 621 is provided with multiple triangular protrusions, and the triangular protrusions mesh with the blocking groove. During the movement of the push plate 621, the blocking groove reduces the pushing force of the push plate 621 on the gear 4, thereby increasing the influence of the telescopic rod on the movement of the gear 4.

[0061] When the pushing force of the push plates 621 on both sides acts on the gear 4, it cannot make the gear 4 rotate, thus preventing the telescopic rod from rotating and thus preventing the telescopic rod from driving the gear 4 to move. When the telescopic rod releases the restriction on the gear 4, the push plates 621 push the gear 4 to restrict the gear 4.

[0062] like Figure 8 and Figure 11 As shown, the telescopic rod 63 consists of two telescopic rods 63 of different sizes, one above the other, so that the installation of the fixed rod with the gear 4 does not affect the installation of the gear 4. The gear 4 is installed at the lower part of the telescopic rod 63. When the gear 4 is driven to rotate by the rack 3, the telescopic rod 63 meshing with the gear 4 is also driven to rotate, so that the telescopic rod 63 engages with the meshing plate, causing the telescopic rod 63 to rotate, thereby driving the gear 4 to move towards the rack 3, and thus making the gear 4 and the rack 3 tightly engaged. A guide post 631 is installed on one side of the upper telescopic rod 63. The guide post 631 makes the engagement between the telescopic rod 63 and the gear 4 tighter, so that the rotation of the gear 4 can drive the rotation of the telescopic rod 63. A guide sleeve 632 is provided on the lower telescopic rod 63, and the guide post 631 and the guide sleeve 632 are slidably connected.

[0063] When the motor drives the rack 3 to move to one side, the rack 3 drives the gear 4 to rotate. After the gear 4 rotates, it drives the telescopic rod 63 to rotate, so that the telescopic rod 63 engages with the meshing plate 612, thereby driving the gear 4 to move, making the gear 4 and the rack 3 more closely engaged.

[0064] In the operation of this invention, when installing the rack 3, the installation position of the rack 3 is determined by the meshing of the clamping plate 52 and the rack 3, which then pushes the swing rod 55 upward. When the swing rod 55 moves upward, the rotating block 551 moves downward around the fulcrum, and at the same time, the front end of the one-way block 552 deflects upward under the action of the transmission wheel 54, so that the rotating block 551 does not affect the transmission wheel 54 when it moves downward. When the swing rod 55 moves downward, the rotating block 551 at the front end of the swing rod 55 moves upward, and at the same time, the rear end of the one-way block 552 inside the rotating block 551 contacts the top end of the inner wall of the rotating block 551, so that the front end of the one-way block 552 can push the transmission wheel 54 to rotate. The rotation of the transmission wheel 54 drives the pressing block 53 to move downward. During the downward movement of the pressing block 53, it pushes the clamping plate 52 and the sliding plate 55 to move downward. Plate 51 moves closer to rack 3, while the sliding engagement block 59 inside the fixing frame 57 engages with the slot 532 at the bottom of the pressing block 53, preventing the pressing block 53 from moving upward. When the pressing block 53 moves downward, it pushes the engagement block 59 to contract. After the pressing block 53 has moved a certain distance, the engagement block 59 locks it in place, thus making the clamping plate 52 clamp the rack 3 tighter and tighter. When it is necessary to adjust the curvature of the rack 3, simply pull one side lever 55 to make the clamping plate 52 press the rack 3 to adjust the curvature. After fixing, the lever 584 is rotated to make the fork 58 drive the engagement block 59 to disengage from the pressing block 53, allowing the pressing block 53 to be lifted. The engagement block 59 is then reset by reversing the lever 584.

[0065] During the installation of gear 4, gear 4 is first installed on telescopic rod 63. Rack 3 is driven by motor to move to one side, causing rack 3 to drive gear 4 to rotate. This causes gear 4 to drive telescopic rod 63 to rotate. The rotation of telescopic rod 63, in cooperation with meshing plate 612, causes telescopic rod 63 to displace. The displacement of telescopic rod 63 causes gear 4 to move closer to rack 3, thus fixing gear 4. When fixing rod 64 is installed, fixing rod 64 presses down on telescopic rod 63 to compress it. After telescopic rod 63 releases the restriction on gear 4, push plate 621 pushes gear 4, thus fixing gear 4 again when changing the rotating shaft. When fixing rod 64 is fully engaged with gear 4, the other end of fixing rod 64 is stuck in workpiece 1, thus fixing the fit clearance between gear 4 and rack 3.

[0066] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other variations without departing from the scope of the disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be given the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tool fixture for rack and pinion mounting and fixing, comprising a workpiece (1), a base plate (2), a rack (3), and a pinion (4); the workpiece (1) is mounted on the base plate (2), the rack (3) is connected with the workpiece (1), and the pinion (4) is engaged with the rack (3), characterized in that, Also include clamping mechanism (5) and adjusting mechanism (6), the clamping mechanism (5) is installed on both sides of the bottom plate (2), the adjusting mechanism (6) is installed on the bottom plate (2), and is located between the two clamping mechanisms (5), the adjusting mechanism (6) is connected with the clamping mechanism (5) through the rack (3) and the gear (4), the clamping mechanism (5) is driven by the swing lever (55) to move downward in the horizontal plane to rotate the transmission wheel (54) unidirectionally, the transmission wheel (54) rotates to drive the extrusion block (53) to move perpendicular to the horizontal plane, the extrusion block (53) moves downward to push the clamping plate (52) to move unidirectionally along the rack (3), the clamping plate (52) moves to push the rack (3) to move along the vertical line of the extrusion block (53); The adjusting mechanism (6) includes a fixed disc (61), a fixed plate (62), a telescopic rod (63) and a fixed rod (64); the fixed disc (61) is fixedly installed on the bottom plate (2), the fixed plate (62) is installed on the fixed disc (61), the telescopic rod (63) is installed inside the fixed disc (61), and the upper portion of the telescopic rod (63) is engaged with the gear (4), the lower portion of the telescopic rod (63) is engaged with the fixed disc (61), one end of the fixed rod (64) is located above the telescopic rod (63), and the other end of the fixed rod (64) is slidably installed on the inner wall of the workpiece (1); one side of the fixed disc (61) is a plane, a plurality of blocking grooves (611) are arrayed on the upper end face of the fixed disc (61), engagement plates (612) are installed on the two sides in the fixed disc (61), only one side of the engagement plate (612) is provided with the rack (3), and the engagement plate (612) is perpendicular to the rack (3), and the engagement plate (612) is engaged with the telescopic rod (63).

2. A fixture clamp for rack and pinion mounting according to claim 1, characterized in that: The clamping mechanism (5) includes a sliding plate (51), a clamping plate (52), an extrusion block (53), a transmission wheel (54), a swing lever (55), a support (56), a fixed frame (57), a shift fork (58) and an engagement block (59); the sliding plate (51) is slidably installed on both sides of the bottom plate (2), the clamping plate (52) is slidably installed above the sliding plate (51), the extrusion block (53) is slidably connected with the clamping plate (52), one side of the transmission wheel (54) is engaged with the extrusion block (53) in the horizontal plane, the other side of the transmission wheel (54) is slidably connected with the swing lever (55) in the horizontal plane, the swing lever (55) and the transmission wheel (54) are both rotatably installed inside the support (56), the lower portion of the support (56) is installed on the upper end face of the fixed frame (57), the fixed frame (57) is installed on the bottom plate (2), the shift fork (58) is vertically installed inside the fixed frame (57), and the engagement block (59) is installed inside the shift fork (58) and slidably connected with the fixed frame (57).

3. A fixture clamp for rack and pinion mounting according to claim 2, characterized in that: One side of the clamping plate (52) is arrayed with a plurality of engagement grooves (521), the engagement grooves (521) are engaged with the rack (3), the depth value of the engagement grooves (521) is greater than the tooth height value of the rack (3), and the other side of the clamping plate (52) is provided with an upwardly inclined extrusion groove (522).

4. A fixture clamp for rack and pinion mounting according to claim 3, wherein: The extrusion block (53) is a wedge structure, and a plurality of fixing grooves (531) are symmetrically arranged on the lower part of the extrusion block (53), the fixing grooves (531) are staggered, and a plurality of clamping grooves (532) are arranged above the fixing grooves (531), and the clamping grooves (532) are located in the middle of the left and right fixing grooves (531).

5. A fixture clamp for rack and pinion mounting according to claim 4, characterized in that: The front end of the swing rod (55) is provided with a rotating block (551), a through hole is formed in the rear end of the rotating block (551), a groove is formed in the front end of the rotating block (551), a one-way block (552) is rotatably installed in the groove, a through hole is formed in the front end of the one-way block (552), the rear end of the one-way block (552) is attached to the rotating block (551) when the one-way block (552) is horizontal, the front end of the one-way block (552) is attached to the rotating block (551) when the one-way block (552) is vertical, and a push block (553) is installed below the rear end of the one-way block (552), and the push block (553) is connected to the bottom of the groove of the rotating block (551) through a spring.

6. A fixture clamp for rack and pinion mounting according to claim 5, wherein: The front end of the fixed frame (57) is provided with a sliding groove (571), a plurality of limiting grooves (572) are symmetrically arranged in the bottom of the sliding groove (571), the limiting grooves (572) are staggered, and the limiting grooves (572) are in sliding connection with the engaging blocks (59).

7. A fixture clamp for rack and pinion mounting according to claim 6, characterized in that: The yoke (58) is a "mountain" structure, guide rails (581) are arranged on both sides of the yoke (58), the yoke (58) is connected with the baffle (582) through the guide rails (581), one side of the baffle (582) is connected with the supporting plate (583), and the supporting plate (583) is connected with the pull rod (584).

8. The fixture clamp for rack and pinion mounting according to claim 1, wherein: The fixed plate (62) is a semicircular structure, and the plane of the fixed plate (62) is parallel to the rack, the fixed plate (62) is connected with the push plate (621) through a spring, the push plate (621) is symmetrically installed on both sides of the inside of the fixed plate (62), a plurality of triangular protrusions are arranged on the bottom of the push plate (621), and the triangular protrusions are engaged with the blocking grooves (611).

9. A fixture clamp for rack and pinion mounting according to claim 8, characterized in that: The telescopic rod (63) is composed of two telescopic rods (63) of different sizes, the lower telescopic rod (63) is provided with a gear (4), one side of the upper telescopic rod (63) is provided with a guide column (631), the lower telescopic rod (63) is provided with a guide sleeve (632), and the guide column (631) and the guide sleeve (632) are in sliding connection.

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