Machine tool transmission gear

Abstract

The utility model relates to the technical field of gears, in particular to a machine tool transmission gear. The machine tool transmission gear comprises a gear body, a through cavity is formed in the gear body, and a connecting shaft sleeve is inserted into the through cavity; an inserting groove is formed in the gear body, arc-shaped ball grooves are formed in the two side walls of the inserting groove, and a plurality of steel balls arranged in a rolling mode are installed in the arc-shaped ball grooves. One end of the connecting shaft sleeve is fixedly sleeved with a press-fit ring, a plurality of annularly-distributed inserting plates are fixedly embedded in the outer sleeve wall at the joint of the connecting shaft sleeve and the press-fit ring, and arc-shaped side grooves are formed in the two side walls of each inserting plate; and a pressing ring is sleeved on the connecting shaft sleeve. According to the machine tool transmission gear, torsion is evenly dispersed to a plurality of contact points, stress concentration is reduced, the torsion resistance and durability are improved, and therefore the problems that when the gear body and the connecting shaft sleeve transmit torsion, the connecting position of the connecting shaft sleeve and the gear body is twisted off and damaged due to the fact that the instant torsion is too large are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of gear technology, and in particular to a machine tool transmission gear. Background Technology

[0002] Machine tool transmission gears are key components in machine tool transmission systems. Typically wheel-shaped, they achieve motion and power transmission between various machine tool components through tooth meshing. They can change speed, torque, direction of motion, and mode of motion. In machine tools, transmission gears play a crucial role in transmitting power from a power source (such as a motor) to various working parts, ensuring that the machine tool can perform cutting, grinding, boring, and other machining operations according to predetermined requirements. They play a decisive role in the machining accuracy, efficiency, and stability of the machine tool. However, existing machine tool transmission gears mostly adopt an integrated gear and bushing structure, which has the following problems:

[0003] 1. High maintenance costs: When a bushing or gear is partially damaged, the entire bushing or gear needs to be replaced, resulting in material waste and increased maintenance costs.

[0004] 2. Insufficient torsional resistance: When transmitting large torques, the connection is prone to breakage or wear due to stress concentration, affecting transmission stability;

[0005] 3. Poor installation flexibility: Traditional structures are difficult to disassemble and assemble quickly, and cannot adapt to frequent adjustment or maintenance needs.

[0006] Therefore, it is necessary to provide a new machine tool transmission gear to solve the above-mentioned technical problems. Utility Model Content

[0007] To solve the above-mentioned technical problems, this utility model provides a machine tool transmission gear.

[0008] The machine tool transmission gear provided by this utility model includes a gear body, on which a through cavity is opened, and a connecting shaft sleeve is inserted into the through cavity;

[0009] The gear body has annularly distributed insertion slots that communicate with the through cavity, and each insertion slot has an arc-shaped ball groove on both sides, in which multiple rolling steel balls are installed.

[0010] One end of the connecting bushing is fixedly fitted with a pressing ring, and multiple annularly distributed plug plates are fixedly embedded in the outer sleeve at the connection between the connecting bushing and the pressing ring. Both sides of the plug plates are provided with arc-shaped side grooves.

[0011] A pressure ring is fitted onto the connecting shaft sleeve.

[0012] Preferably, the connecting bushing passes through the cavity opened in the gear body, and the insertion plates on the connecting bushing are respectively inserted into the corresponding insertion slots.

[0013] Preferably, one-third of the steel ball extends into an arc-shaped groove and abuts against the arc-shaped side groove of the plug plate.

[0014] Preferably, the gear body has multiple annularly distributed positioning screws fixedly fitted onto the end face opposite to the insertion slot.

[0015] Preferably, the end of the connecting bushing away from the pressing ring has multiple positioning grooves arranged along the axial direction of the connecting bushing.

[0016] Preferably, the pressing ring has multiple annularly distributed socket holes, and the inner ring wall of the pressing ring is fixedly provided with multiple positioning protrusions.

[0017] Preferably, the compression ring is sleeved on the connecting shaft sleeve, the positioning protrusion is inserted into the positioning groove, and the sleeve hole of the compression ring is sleeved on the positioning screw, and a threaded nut is installed on the positioning screw.

[0018] Compared with related technologies, the machine tool transmission gear provided by this utility model has the following beneficial effects:

[0019] 1. This utility model utilizes a pressure ring to quickly install and disassemble the connecting bushing and the gear body, eliminating the problem that the entire structure of the bushing and gear in traditional machine tool transmission gears needs to be replaced due to damage to the bushing or gear, thus reducing maintenance costs and material waste.

[0020] 2. This utility model evenly distributes torque to multiple contact points, reduces stress concentration, and improves torsional resistance and durability. This effectively reduces the problem of breakage or damage at the connection between the gear body and the connecting bushing due to excessive instantaneous torque during torque transmission. Attached Figure Description

[0021] Figure 1 One of the structural schematic diagrams of a preferred embodiment of the machine tool transmission gear provided by this utility model;

[0022] Figure 2 A second schematic diagram of a preferred embodiment of the machine tool transmission gear provided by this utility model;

[0023] Figure 3 for Figure 1 The diagram shows the structural structure of the gear body.

[0024] Figure 4 for Figure 2 The diagram shows the structural structure of the gear body.

[0025] Figure 5 for Figure 1The diagram shows the structure of the connecting bushing.

[0026] Figure 6 for Figure 1 The diagram shows the structure of the compression ring.

[0027] The following are the labels in the diagram: 1. Gear body; 1a. Through cavity; 1b. Insertion slot; 1c. Arc-shaped ball groove; 11. Positioning screw; 2. Connecting bushing; 2a. Positioning groove; 21. Pressing ring; 3. Insertion plate; 3a. Arc-shaped side groove; 4. Steel ball; 5. Pressing ring; 5a. Socket hole; 51. Positioning protrusion; 6. Nut. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0030] Please see Figures 1 to 6 The present invention provides a machine tool transmission gear, which includes a gear body 1, a connecting bushing 2, and a pressure ring 5.

[0031] In the embodiments of this utility model, please refer to Figures 1 to 6 The gear body 1 has a through cavity 1a, and the gear body 1 has an annularly distributed insertion slots 1b that communicate with the through cavity 1a. One end of the connecting bushing 2 is fixedly fitted with a pressing ring 21, and multiple annularly distributed insertion plates 3 are fixedly fitted into the outer sleeve wall at the connection between the connecting bushing 2 and the pressing ring 21. The connecting bushing 2 is inserted into the through cavity 1a, and one end of the connecting bushing 2 is fixedly fitted with a pressing ring 21. Multiple annularly distributed insertion plates 3 are fixedly fitted into the outer sleeve wall at the connection between the connecting bushing 2 and the pressing ring 21. The connecting bushing 2 passes through the through cavity 1a of the gear body 1, and the insertion plates 3 on the connecting bushing 2 are respectively inserted into the corresponding insertion slots 1b.

[0032] A pressure ring 5 is fitted on the connecting bushing 2. Multiple annularly distributed positioning screws 11 are fixedly fitted on the end face of the gear body 1 opposite to the insertion groove 1b. Multiple positioning grooves 2a are provided on the end of the connecting bushing 2 away from the pressure ring 21. Multiple annularly distributed socket holes 5a are provided on the pressure ring 5. Multiple positioning protrusions 51 are fixedly provided on the inner ring wall of the pressure ring 5. The pressure ring 5 is fitted on the connecting bushing 2. The positioning protrusions 51 are inserted into the positioning grooves 2a. The socket holes 5a of the pressure ring 5 are fitted onto the positioning screws 11. A nut 6 with a threaded connection is installed on the positioning screws 11.

[0033] It should be noted that when assembling the gear body 1 and the connecting bushing 2, the connecting bushing 2 is passed through the through cavity 1a of the gear body 1, while the insertion plates 3 on the connecting bushing 2 are inserted into the corresponding insertion slots 1b, until the pressure ring 5 on the connecting bushing 2 is pressed onto the gear body 1. Then, the pressure ring 5 is fitted onto the connecting bushing 2, and the positioning protrusion 51 is inserted into the positioning slot 2a, until the sleeve hole 5a of the pressure ring 5 is fitted onto the positioning screw 11. Finally, the pressure ring 5 is fixed with the nut 6, thus completing the installation of the gear body 1 and the connecting bushing 2. This eliminates the problem of the traditional machine tool transmission gear's integrated bushing and gear structure requiring replacement of the entire structure due to damage to the bushing or gear, reducing maintenance costs and material waste.

[0034] In the embodiments of this utility model, please refer to Figures 1 to 6 Each insertion slot 1b has an arc-shaped ball groove 1c on both sides, and multiple rolling steel balls 4 are installed in the arc-shaped ball groove 1c. The insertion plate 3 has an arc-shaped side groove 3a on both sides, and one-third of the ball of steel ball 4 extends out of the arc-shaped ball groove 1c and abuts against the arc-shaped side groove 3a of the insertion plate 3.

[0035] It should be noted that after the gear body 1 and the connecting bushing 2 are assembled, the bushing 2 is rotated by the output shaft, which in turn drives the torque on the bushing 2 to be distributed to each plug plate 3. The plug plate 3, because it is in rolling contact with each steel ball 4, distributes the torque to each steel ball 4, and then gathers it on the gear body 1. The steel ball 4 in the insertion groove 1b cooperates with the arc-shaped side groove 3a to evenly distribute the torque to multiple contact points, reduce stress concentration, improve torsional resistance and durability, and thus effectively reduce the problem of the connection between the connecting bushing 2 and the gear body 1 being torn or damaged due to excessive instantaneous torque during torque transmission.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A machine tool transmission gear, characterized in that, It includes a gear body (1), on which a through cavity (1a) is provided, and a connecting bushing (2) is inserted into the through cavity (1a); The gear body (1) has an annularly distributed insertion slots (1b) that communicate with the through cavity (1a), and each insertion slot (1b) has an arc-shaped ball groove (1c) on both sides, and multiple rolling steel balls (4) are installed in the arc-shaped ball groove (1c). One end of the connecting bushing (2) is fixedly fitted with a pressing ring (21), and multiple ring-shaped plug plates (3) are fixedly fitted into the outer sleeve wall at the connection between the connecting bushing (2) and the pressing ring (21). Both sides of the plug plate (3) are provided with arc-shaped side grooves (3a). A pressure ring (5) is fitted onto the connecting bushing (2).

2. The machine tool transmission gear according to claim 1, characterized in that, The connecting bushing (2) passes through the cavity (1a) opened in the gear body (1), and the plug plates (3) on the connecting bushing (2) are respectively inserted into the corresponding insertion slots (1b).

3. The machine tool transmission gear according to claim 2, characterized in that, One-third of the steel ball (4) extends into an arc-shaped groove (1c) and abuts against the arc-shaped side groove (3a) opened on the plug plate (3).

4. The machine tool transmission gear according to claim 1, characterized in that, The gear body (1) is fixedly fitted with multiple annularly distributed positioning screws (11) on the end face opposite to the insertion slot (1b).

5. The machine tool transmission gear according to claim 4, characterized in that, The connecting bushing (2) has multiple positioning grooves (2a) arranged along the axial direction of the connecting bushing (2) at one end away from the pressing ring (21).

6. The machine tool transmission gear according to claim 5, characterized in that, The pressing ring (5) has multiple annularly distributed socket holes (5a), and the inner ring wall of the pressing ring (5) is fixedly provided with multiple positioning protrusions (51).

7. The machine tool transmission gear according to claim 6, characterized in that, The compression ring (5) is sleeved on the connecting bushing (2), the positioning protrusion (51) is inserted into the positioning groove (2a), and the sleeve hole (5a) of the compression ring (5) is sleeved on the positioning screw (11), and a nut (6) with threaded connection is installed on the positioning screw (11).

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