Grinding machining table for precision bearing manufacturing

Abstract

The utility model discloses a precision bearing manufacturing grinding machining table which comprises a concentric-square-shaped frame, two clamping blocks symmetrically installed at the top end of the concentric-square-shaped frame in a sliding mode, a horizontal plate installed on the left outer wall and the right outer wall of the concentric-square-shaped frame in a sliding mode and a rotating shaft installed at the bottom of the concentric-square-shaped frame below the horizontal plate in a rotating mode. The bottom end of the clamping block extends into the concentric-square-shaped frame and is fixedly connected with the top end of the lying plate, and a connecting rod opposite-pushing structure used for driving the clamping block and the lying plate to slide in the X-axis direction is installed at the top end of the rotating shaft. A bearing workpiece to be machined is placed between the two clamping blocks, the gear motor drives the rotating shaft to synchronously and reversely rotate through the two fluted discs, and then the clamping blocks are driven to move through the connecting rod opposite-pushing structure till the two clamping blocks are close to each other and clamp the bearing workpiece.

Description

Technical Field

[0001] This utility model relates to the field of bearing processing auxiliary tools, specifically a precision bearing manufacturing grinding table. Background Technology

[0002] Grinding tables in bearing manufacturing are crucial tools for ensuring high precision and surface quality of bearing components during grinding. Their primary function is to fix and support the workpiece, preventing displacement and deformation during grinding, thereby improving processing efficiency and product consistency. The structure of such grinding tables typically consists of several main parts: a base, a workpiece support, a clamping mechanism, a positioning device, and an adjustment device. The base provides a stable foundation, the support ensures workpiece stability, the clamping mechanism firmly fixes the workpiece, the positioning device ensures accurate workpiece positioning, and the adjustment device allows the fixture to adapt to workpieces of different specifications. For example, a precision bearing manufacturing grinding table disclosed in patent publication number CN219704642U includes a support platform with a clamping mechanism for holding the bearing to be ground. The bearing platform is equipped with an inner wall cleaning structure in the middle to clean the grinding debris generated on the inner wall of the bearing; the clamping mechanism is equipped with an end face cleaning structure to clean the grinding debris generated on the end face of the bearing. It can be seen that in the process of using the above technical solution, the movable clamping seat is driven by a hydraulic telescopic rod on one side to approach the fixed clamping seat until the bearing to be processed is fixed. When clamping bearing workpieces of different diameters, the center of the bearing workpiece will always be offset. This offset will cause the center of the bearing workpiece to not coincide with the spindle center of the machine tool. The machine tool will need to be recalibrated according to the center position of the bearing workpiece. However, the structure of double hydraulic telescopic rod and double cylinder will greatly increase the structural cost and usage cost of the processing fixture. That is, the introduction means that an additional hydraulic system, control valve and more pipeline connections are required. Utility Model Content

[0003] The purpose of this utility model is to provide a precision bearing manufacturing grinding table, in which the bearing workpiece to be processed is placed between two clamping blocks, and the geared motor drives two rotating shafts to rotate synchronously in opposite directions through two gear discs. Then, the rotating shafts use a connecting rod push structure to drive the clamping blocks to move until the two clamping blocks approach each other and clamp the bearing workpiece in the center, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a precision bearing manufacturing grinding table, comprising a U-shaped frame, two clamping blocks symmetrically and slidably mounted on the top of the U-shaped frame, horizontal plates slidably mounted on the left and right outer walls of the U-shaped frame, and a rotating shaft rotatably mounted on the bottom of the U-shaped frame below the horizontal plates. The bottom ends of the clamping blocks extend into the interior of the U-shaped frame and are fixedly connected to the top of the horizontal plates. The top of the rotating shaft is equipped with a connecting rod pushing structure for driving the clamping blocks and the horizontal plates to slide in the X-axis direction. A geared disc is mounted on one end of the surface of each of the two rotating shafts, and the two geared discs mesh with each other. A reduction motor is mounted on one side of the bottom end of the U-shaped frame, and the drive shaft of the reduction motor is fixedly connected to the bottom end of one of the rotating shafts.

[0005] Preferably, right-angle machine feet are fixed on both sides of the bottom end of the rectangular frame, and through holes are provided on both sides of the top end of the right-angle machine feet.

[0006] Preferably, the clamping block has two symmetrical diagonal bracing arms integrally formed on the outer wall of the side near the vertical center reference plane of the loop frame, and the clamping block is made of alloy steel.

[0007] Preferably, both sides of the bottom end of the clamping block are integrally formed with a lower protrusion, the bottom end of the lower protrusion extends into the interior of the U-shaped frame and is fixedly connected to the top of the horizontal plate, the upper surface of the U-shaped frame is provided with a rectangular hollow part for the lower protrusion to slide, and the left and right outer walls of the U-shaped frame are provided with rectangular guide grooves for the horizontal plate to slide.

[0008] Preferably, the top wall of the U-shaped frame is fixed with a guide rail, and a slide table is slidably installed at one end of the guide rail surface. The bottom end of the slide table is fixedly connected to the top end of the horizontal plate, and the slide table and the guide rail are located between two lower protrusions.

[0009] Preferably, the connecting rod push structure includes a longitudinal arm fixed to one side of the bottom end of the horizontal plate, a main connecting rod fixed to the top of the rotating shaft, and a sliding groove disposed inside the longitudinal arm. The top of the main connecting rod is equipped with a protruding post extending upward into the sliding groove, and the protruding post and the longitudinal arm are in sliding engagement.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This precision bearing manufacturing grinding table places the bearing workpiece to be processed between two clamping blocks. A geared motor drives two geared discs to rotate the rotating shaft synchronously in opposite directions, which in turn drives the clamping blocks to move through a linkage push structure until the two clamping blocks approach each other and clamp the bearing workpiece. The movement of the clamping blocks is driven by a geared motor, and the two rotating shafts rotate synchronously in opposite directions, ensuring that the clamping blocks maintain symmetry throughout the clamping process. The symmetrical clamping force effectively prevents the workpiece from shifting during clamping, thus ensuring that when clamping bearing workpieces of different diameters, the center of the clamped bearing workpiece remains coaxial with the machine tool spindle. This eliminates the need for the machine tool spindle to be recalibrated based on the center position of the bearing workpiece, reducing preparation and debugging time before machining. Secondly, since the relative movement of the clamping blocks is driven by a geared motor, the speed and rotation angle of the geared motor can be adjusted to flexibly adapt to bearing workpieces of different diameters. Compared with traditional single-point clamping, the clamping force distribution between the two clamping blocks is more uniform, which can effectively prevent the workpiece from deforming due to excessive local force during clamping. Finally, the structure of this machining table is relatively simple, mainly composed of a geared motor, gear plate, rotating shaft and clamping blocks. There is no need to arrange hydraulic pipelines, pneumatic pipelines, valve bodies and other structures. Instead, standardized parts are used, which reduces the overall structural cost and the later use cost. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0013] Figure 3 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0014] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0015] Figure 5 This is a three-dimensional structural diagram of the right-angle machine foot of this utility model after removal;

[0016] Figure 6 This is a schematic diagram of the three-dimensional structure of the longitudinal arm of this utility model.

[0017] In the diagram: 1. Rectangular frame; 2. Rectangular guide groove; 3. Right-angle foot; 4. Clamping block; 401. Diagonal brace arm; 402. Lower protrusion; 5. Horizontal plate; 6. Rotating shaft; 7. Linkage push structure; 701. Main connecting rod; 702. Longitudinal arm; 703. Protruding column; 704. Slide groove; 8. Gear plate; 9. Gear motor. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0019] Please see Figure 1-6 An embodiment of this utility model provides a precision bearing manufacturing grinding table, comprising a U-shaped frame 1, two clamping blocks 4 symmetrically and slidably mounted on the top of the U-shaped frame 1, horizontal plates 5 slidably mounted on the left and right outer walls of the U-shaped frame 1, and a rotating shaft 6 rotatably mounted on the bottom of the U-shaped frame 1 below the horizontal plates 5. The bottom end of the clamping blocks 4 extends into the interior of the U-shaped frame 1 and is fixedly connected to the top of the horizontal plates 5. The top of the rotating shaft 6 is equipped with a connecting rod pushing structure 7 for driving the clamping blocks 4 and the horizontal plates 5 to slide in the X-axis direction. One end of each of the two rotating shafts 6 is equipped with a gear plate 8, and the two gear plates 8 mesh with each other. A reduction motor 9 is installed on one side of the bottom end of the U-shaped frame 1, and the drive shaft of the reduction motor 9 is fixedly connected to the bottom end of one of the rotating shafts 6.

[0020] Workers install a motor controller on the machine tool frame near the loop frame 1 to control the operation of the geared motor 9, thereby controlling the geared motor 9 to work according to the set direction, speed, and response time;

[0021] The deceleration self-locking function of the geared motor 9 can effectively prevent the workpiece from accidentally loosening or sliding in the clamping state. This means that even if the geared motor 9 loses power or malfunctions during the processing, the right-angle machine foot 3 will not be released due to gravity or external force, ensuring that the workpiece is always kept in a safe clamping state, thereby reducing the risk of workpiece falling or fixture damage.

[0022] Both sides of the bottom of the loop frame 1 are fixed with right-angle machine feet 3, and both sides of the top of the right-angle machine feet 3 are provided with through holes. Two symmetrical diagonal bracing arms 401 are integrally formed on the outer wall of the clamping block 4 near the vertical center reference plane of the loop frame 1. The clamping block 4 is made of alloy steel. After the rotating shaft 6 drives the clamping block 4 to move horizontally through the connecting rod push structure 7, the clamping block 4 on one side applies force to the workpiece through the V-shaped structure formed between the two diagonal bracing arms 401.

[0023] Both sides of the bottom end of the clamping block 4 are integrally formed with a lower protrusion 402. The bottom end of the lower protrusion 402 extends into the interior of the loop frame 1 and is fixedly connected to the top of the horizontal plate 5. The upper surface of the loop frame 1 is provided with a rectangular hollow part for the lower protrusion 402 to slide. The left and right outer walls of the loop frame 1 are provided with rectangular guide grooves 2 for the horizontal plate 5 to slide.

[0024] A guide rail is fixed to the top wall of the U-shaped frame 1. A slide table is slidably installed at one end of the guide rail surface. The bottom end of the slide table is fixedly connected to the top end of the horizontal plate 5. The slide table and the guide rail are located between the two lower protrusions 402. During the sliding process of the horizontal plate 5, the guide rail at the top of the U-shaped frame 1 guides the horizontal plate 5 to perform linear sliding motion.

[0025] The linkage counter-pushing structure 7 includes a longitudinal arm 702 fixed to one side of the bottom end of the horizontal plate 5, a main connecting rod 701 fixed to the top of the rotating shaft 6, and a sliding groove 704 set inside the longitudinal arm 702. The top of the main connecting rod 701 is equipped with a protrusion 703 extending upward into the sliding groove 704. The protrusion 703 and the longitudinal arm 702 are in sliding engagement. After the rotating shaft 6 is driven to rotate by the reduction motor 9 and the gear plate 8, the main connecting rod 701 swings around the rotating shaft 6. Since the protrusion 703 is located in the sliding groove 704 of the longitudinal arm 702, the swinging motion of the main connecting rod 701 is converted into the horizontal linear motion of the longitudinal arm 702, the horizontal plate 5, the lower protrusion 402, and the clamping block 4 through the protrusion 703 and the sliding groove 704. That is, the two clamping blocks 4 slide towards each other at the same time.

[0026] In this embodiment, the operator first bolts the loop frame 1 onto the machine tool's work platform, ensuring the processing table is stable. Then, the position of the loop frame 1 needs to be adjusted so that the machine tool spindle is initially positioned between the two clamping blocks 4. Before clamping, the operator cleans the bearing workpiece to be processed, removing surface impurities and oil to ensure good contact between the clamping blocks 4 and the workpiece. Then, the bearing workpiece is gently placed between the two clamping blocks 4. After the workpiece is placed, the reduction motor 9 is started, causing the geared disc 8 and the rotating shaft 6 to rotate, thus allowing the two rotating blocks to... When shaft 6 rotates synchronously in opposite directions, shaft 6 drives one of the clamping blocks 4 to slide horizontally in the X-axis direction through the connecting rod push structure 7. Then, the two clamping blocks 4 move towards each other until they firmly clamp the workpiece. When the bearing workpiece reaches the predetermined clamping force, the operator stops the reduction motor 9 and carefully checks the clamping status to ensure that the workpiece is firm and stable. The operator can gently shake the workpiece to confirm that it is firmly clamped. If the workpiece is loose, the clamping block position needs to be readjusted and clamped again. After confirming that all preparations are completed, the operator can start the machine tool and begin processing the bearing workpiece.

Claims

1. A precision bearing manufacturing grinding table, characterized in that: The device includes a spiral frame (1), two clamping blocks (4) symmetrically and slidably mounted on the top of the spiral frame (1), horizontal plates (5) slidably mounted on the left and right outer walls of the spiral frame (1), and a rotating shaft (6) rotatably mounted on the bottom of the spiral frame (1) below the horizontal plates (5). The bottom end of the clamping block (4) extends into the interior of the spiral frame (1) and is fixedly connected to the top of the horizontal plate (5). The top of the rotating shaft (6) is equipped with a connecting rod push structure (7) for driving the clamping block (4) and the horizontal plate (5) to slide in the X-axis direction. One end of each of the two rotating shafts (6) is equipped with a gear plate (8), and the two gear plates (8) mesh with each other. A reduction motor (9) is installed on one side of the bottom end of the spiral frame (1), and the drive shaft of the reduction motor (9) is fixedly connected to the bottom end of one of the rotating shafts (6).

2. The precision bearing manufacturing grinding table according to claim 1, characterized in that: Both sides of the bottom of the rectangular frame (1) are fixed with right-angle machine feet (3), and both sides of the top of the right-angle machine feet (3) are provided with through holes.

3. The precision bearing manufacturing grinding table according to claim 1, characterized in that: The clamping block (4) has two symmetrical diagonal bracing arms (401) integrally formed on the outer wall of one side near the vertical center reference plane of the loop frame (1). The clamping block (4) is made of alloy steel.

4. The precision bearing manufacturing grinding table according to claim 3, characterized in that: Both sides of the bottom end of the clamping block (4) are integrally formed with a lower protrusion (402). The bottom end of the lower protrusion (402) extends into the interior of the spiral frame (1) and is fixedly connected to the top of the horizontal plate (5). The upper surface of the spiral frame (1) is provided with a rectangular hollow part for the lower protrusion (402) to slide. The left and right outer walls of the spiral frame (1) are provided with rectangular guide grooves (2) for the horizontal plate (5) to slide.

5. A precision bearing manufacturing grinding table according to claim 4, characterized in that: The top wall of the spiral frame (1) is fixed with a guide rail, and a slide table is slidably installed at one end of the guide rail surface. The bottom end of the slide table is fixedly connected to the top end of the horizontal plate (5). The slide table and the guide rail are located between two lower protrusions (402).

6. The precision bearing manufacturing grinding table according to claim 4, characterized in that: The connecting rod push structure (7) includes a longitudinal arm (702) fixed to one side of the bottom end of the horizontal plate (5), a main connecting rod (701) fixed to the top of the rotating shaft (6), and a sliding groove (704) provided inside the longitudinal arm (702). The top end of the main connecting rod (701) is equipped with a protruding post (703) extending upward into the sliding groove (704), and the protruding post (703) and the longitudinal arm (702) are in sliding engagement.

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