Pull rod supergrinding machine head

Abstract

The utility model discloses a pull rod supergrinding machine head which comprises a base, a tool bit assembly, a driving motor and a connecting rod mechanism, the driving motor is fixedly installed on the base, the connecting rod mechanism comprises a first connecting rod, a second connecting rod and an installation base, the installation base is fixed on the base, and the driving motor is an eccentric shaft motor. One end of the first connecting rod is rotationally connected with the output end of the driving motor to form a first rotating fulcrum; the second connecting rod is installed on the base, the other end of the first connecting rod is rotationally connected with one end of the second connecting rod to form a second rotating fulcrum, and the other end of the second connecting rod fixes the tool bit assembly; the driving motor eccentrically rotates to act on the connecting rod mechanism to drive the tool bit assembly to swing back and forth so as to grind a certain part. Through the structural design of the machine head, the tool bit assembly is driven to swing back and forth so as to grind the to-be-ground part of a workpiece, the grinding precision is improved, and the requirement for smoothness of the to-be-ground part of the workpiece is met.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical devices, in particular to a pull rod super-finishing grinding head. Background Art

[0002] The steering rod is a key component in the vehicle's steering mechanism, directly impacting handling stability, operational safety, and tire life. Therefore, high strength requirements are placed on the steering rod. As a key structure for steering, the steering rod's spiral grooves are subject to high finish requirements. During groove grinding, the rod is driven by other mechanisms to rotate and translate while the grinding tool remains stationary. This method, however, produces a less-than-ideal finish on the steering rod grooves, with some areas of the groove wall being insufficiently ground, resulting in a low finish.

[0003] The purpose of the utility model is to provide a pull rod superfinishing grinding head which can overcome the above-mentioned shortcomings. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide a pull rod super-precision grinding head. Through the structural design of the head, the cutter head assembly is driven to swing back and forth to grind the part to be ground of the workpiece, thereby improving the grinding accuracy and meeting the finish requirements of the part to be ground of the workpiece.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is as follows: a pull rod superfinishing grinding head is provided, comprising a base, a cutter head assembly, a driving motor and a connecting rod mechanism, wherein the driving motor is fixedly mounted on the base, the connecting rod mechanism comprises a first connecting rod, a second connecting rod and a mounting seat, the mounting seat is fixed on the base, the driving motor is an eccentric shaft motor, one end of the first connecting rod is rotatably connected to the output end of the driving motor and forms a first rotation fulcrum; the second connecting rod is mounted on the base, the other end of the first connecting rod is rotatably connected to one end of the second connecting rod and forms a second rotation fulcrum, and the other end of the second connecting rod is fixed to the cutter head assembly;

[0006] The eccentric rotation of the driving motor acts on the connecting rod mechanism to drive the cutter head assembly to swing back and forth to achieve grinding of a certain part.

[0007] Furthermore, the second connecting rod includes a swing shaft, a connecting block and a slider, the second rotation fulcrum is fixedly connected to the slider, the connecting block is provided with a slide groove, the slider can slide along the slide groove and can be relatively fixed, the swing shaft passes through the mounting seat, and one end of the swing shaft is fixedly connected to the connecting block, and the other end is fixedly connected to the cutter head assembly.

[0008] Furthermore, the cutter head assembly includes a cutter head structure, which includes a cutter head, a cutter head seat and a fixing seat. The root of the cutter head is fixedly mounted on the cutter head seat, and the root of the cutter head seat is detachably mounted on the fixing seat.

[0009] Furthermore, the cutter head assembly also includes a base, an upper abutment and a lower abutment. The base is provided with a strip groove, one end of the fixed seat is inserted into the strip groove, the lower abutment is located between one side of the fixed seat and the strip groove, one end of the upper abutment contacts the other end of the fixed seat, and the upper abutment is driven by the driving member to act on the fixed seat, so that the cutter head is always close to the part of the workpiece to be ground.

[0010] Furthermore, the working surface of the tool head is an arc-shaped surface that matches the part to be ground of the workpiece.

[0011] Furthermore, the lower abutting member is an elastic member.

[0012] The beneficial effects of the utility model are:

[0013] The utility model comprises a base, a cutter head assembly, a drive motor and a connecting rod mechanism. The eccentrically arranged drive motor drives the connecting rod mechanism to move, and finally drives the cutter head assembly located in the connecting rod mechanism to swing back and forth to grind the part of the workpiece that needs to be ground. The ingenious structural design ensures grinding accuracy and smoothness, and is particularly suitable for processing workpieces with high requirements for smoothness.

[0014] Furthermore, the cutter head assembly of the present invention also includes a base, an upper abutment member and a lower abutment member. The driving member will drive the upper abutment member to move and act on the fixed seat, thereby ensuring that during the entire grinding process, the cutter head will always be flexible and close to the part of the workpiece to be ground, such as the groove of the steering rod, which can ensure that there is sufficient force during grinding without crushing the workpiece, thereby further ensuring the grinding accuracy.

[0015] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the structural diagrams of the utility model (seen from one angle);

[0017] Figure 2 This is the second structural diagram of the utility model (seen from another angle);

[0018] Figure 3 This is the third structural diagram of the present utility model (without the adjustment mechanism installed);

[0019] Figure 4 It is a structural schematic diagram of the cutter head assembly of the utility model;

[0020] Figure 5 It is a cross-sectional view of the cutter head assembly of the present utility model;

[0021] Figure 6 This is an axial cross-sectional view of the second connecting rod of the present invention;

[0022] Figure 7 It is a structural diagram of the second rotation fulcrum of the utility model;

[0023] Figure 8 This is the fourth structural diagram of the present utility model;

[0024] The parts in the accompanying drawings are marked as follows:

[0025] Base 1, cutter head assembly 2, cutter head 21, cutter head seat 22, fixing seat 23, base 24, strip groove 241, mounting hole 242, upper abutment 25, lower abutment 26, drive motor 3, first connecting rod 4, second connecting rod 5, swing shaft 51, connecting block 52, slide groove 521, slider 53, mounting seat 6, first rotation fulcrum 7, second rotation fulcrum 8, bearing structure 9, adjustment mechanism 10;

[0026] A first angle scale 20 and a second angle scale 30;

[0027] Steering tie rod 100. DETAILED DESCRIPTION

[0028] The following describes the specific embodiments of the present invention through specific examples. Those skilled in the art can easily understand the advantages and effects of the present invention based on the content disclosed in this specification. The present invention can also be implemented in other different ways, that is, various modifications and changes can be made without departing from the scope of the present invention.

[0029] The position descriptions such as up, down, left, and right in this embodiment are based on the orientations in the drawings and have no special meanings and are not intended to limit the scope of protection of the present utility model.

[0030] Embodiment: A pull rod superfine grinding head, such as Figures 1 to 7As shown, it includes a base 1, a cutter head assembly 2, a drive motor 3 and a connecting rod mechanism, the drive motor is fixedly mounted on the base, the connecting rod mechanism includes a first connecting rod 4, a second connecting rod 5 and a mounting base 6, the mounting base is fixed on the base, the drive motor is an eccentric shaft motor, one end of the first connecting rod is rotatably connected to the output end of the drive motor and forms a first rotation fulcrum 7; the second connecting rod is mounted on the base, the other end of the first connecting rod is rotatably connected to one end of the second connecting rod and forms a second rotation fulcrum 8, and the other end of the second connecting rod is fixed to the cutter head assembly;

[0031] By driving the motor to rotate eccentrically and act on the connecting rod mechanism, the cutter head assembly is driven to swing back and forth to achieve grinding of a certain part. Figure 1 The arrow A in the middle indicates the swing direction of the cutter head. Figure 1 and Figure 2 Middle refers to swinging left and right.

[0032] Because the drive motor uses an eccentric shaft motor, its rotation drives one end of the first connecting rod to rotate about a first pivot point. The other end of the first connecting rod then swings back and forth using this end as a second pivot point. Because one end of the swing shaft in the second connecting rod is connected to the connecting block, and the other end is mounted on the cutter head assembly, this ultimately drives the cutter head assembly to swing back and forth. The above principle is the operating principle of the connecting rod mechanism, so I will not elaborate on it here.

[0033] In this embodiment, Figure 3 、 Figure 6 and Figure 7 As shown, the second connecting rod 5 includes a swing shaft 51, a connecting block 52 and a slider 53. The second rotation fulcrum is fixedly connected to the slider. The connecting block is provided with a slide groove 521. The slider can slide along the slide groove and can be relatively fixed. The swing shaft passes through the mounting seat. At the same time, one end of the swing shaft is fixedly connected to the connecting block, and the other end is fixedly connected to the cutter head assembly.

[0034] By adjusting the different positions of the slider in the slide groove, the swing amplitude of the swing shaft will be affected, and ultimately the left and right swing amplitude of the cutter head will be affected, so as to achieve the grinding of grooves of different shapes or depths.

[0035] In this embodiment, in order to improve the smoothness of the swing shaft movement and the service life, bearing structures 9 are installed between the two ends of the swing shaft and the mounting seat. Figure 6 As shown, the bearing structure is a common rotating part, so it will not be described in detail.

[0036] In this embodiment, Figure 4 and Figure 5As shown, the cutter head assembly includes a cutter head structure, and the cutter head structure includes a cutter head 21, a cutter head seat 22 and a fixed seat 23. The root of the cutter head is fixedly mounted on the cutter head seat, and the root of the cutter head seat is detachably mounted on the fixed seat. After the cutter head is worn, the cutter head seat is removed from the fixed seat, and then a new cutter head is replaced, and then the cutter head seat is installed on the fixed seat. This is simple and easy to operate, and facilitates the replacement of the cutter head. There are many ways to connect the cutter head to the cutter head seat and the cutter head seat to the fixed seat, such as snap-on connection and threaded connection.

[0037] In this embodiment, Figure 4 and Figure 5 As shown, the cutter head assembly also includes a base 24, an upper abutment 25 and a lower abutment 26. The base is provided with a strip groove 241, one end of the fixed seat is inserted into the strip groove, the lower abutment is located between one side of the fixed seat and the strip groove, one end of the upper abutment contacts the other end of the fixed seat, and the upper abutment is driven by the driving member to act on the fixed seat, so that the cutter head is always close to the part of the workpiece to be ground.

[0038] In this embodiment, the working surface of the cutter head is an arcuate surface matching the portion to be ground of the workpiece. The workpiece in this embodiment may be a steering rod, and the portion to be ground is the spiral groove of the steering rod.

[0039] In this embodiment, the lower abutment member is an elastic member, such as a spring. The driving member can be a driving cylinder that drives the upper abutment member to generate a force acting on the base. Other driving members are also acceptable. During the grinding process, the driving member drives the upper abutment member to move, acting on the fixed seat, thereby ensuring that the cutter head always maintains a certain degree of flexibility and adheres closely to the workpiece to be ground, such as the groove of the steering rod, throughout the grinding process. This ensures sufficient force during grinding without damaging the workpiece.

[0040] In this embodiment, Figure 5 、 Figure 6 and Figure 7 As shown, the back of the base 24 and the end face of the swing shaft 51 are provided with a plurality of mounting holes 242, the end face of the mounting base is provided with a first angle scale 20, and one end of the base is provided with an indicator needle. With reference to the indicator needle and the first angle scale, the base is rotated to the desired position, and the fasteners (not shown) are used to align and lock the mounting holes at different positions to achieve the adjustment of the angle of the base mounted on the swing shaft. The adjustment direction is as follows: Figure 8 As shown by the arrow C. When the swing center of the cutter head is inconsistent with the center of the groove of the steering rod, the above adjustment can be performed.

[0041] In this embodiment, it is preferred that Figure 1 and Figure 2As shown, the base is mounted on the adjustment mechanism 10, where a second angle scale 30 is provided for easy reference when adjusting the angle. The base can be adjusted to rotate around the central axis of the adjustment mechanism to the desired angle through the adjustment mechanism. The rotation direction is as follows: Figure 1 and Figure 8 As shown by the middle arrow B, the angle between the cutter head and the part of the workpiece to be ground is ultimately guaranteed. The adjustment mechanism is adjusted by a handle. This adjustment mechanism itself is a prior art and will not be described in detail.

[0042] By adjusting in the directions of arrows B and C, it is possible to ensure that the center of the cutter head is consistent with the center of the workpiece to be ground.

[0043] The working principle and working process of this utility model:

[0044] like Figure 1 As shown, the machine head is mounted on the machine tool, and the axial translation and self-rotation of the steering rod 100 are driven by other mechanisms of the machine tool. This is a prior art and will not be described in detail. Then the driving motor of the machine head rotates through the connecting rod mechanism and finally drives the mechanism to press Figure 1 The grooves on the steering rod are ground by swinging left and right in the direction of the center. This method will grind the grooves back and forth many times, ultimately ensuring the grinding accuracy and smoothness to meet the product requirements of the steering rod.

[0045] The above description is only an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure made by using the contents of the description and drawings of the present invention, or directly or indirectly used in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A pull rod superfinishing grinding head, characterized by: The invention comprises a base (1), a cutter head assembly (2), a driving motor (3) and a connecting rod mechanism, wherein the driving motor is fixedly mounted on the base, the connecting rod mechanism comprises a first connecting rod (4), a second connecting rod (5) and a mounting seat (6), the mounting seat is fixed on the base, the driving motor is an eccentric shaft motor, one end of the first connecting rod is rotatably connected to the output end of the driving motor and forms a first rotation fulcrum (7); the second connecting rod is mounted on the base, the other end of the first connecting rod is rotatably connected to one end of the second connecting rod and forms a second rotation fulcrum (8), and the other end of the second connecting rod fixes the cutter head assembly; The eccentric rotation of the driving motor acts on the connecting rod mechanism to drive the cutter head assembly to swing back and forth to achieve grinding of a certain part.

2. The pull rod superfinishing grinding head according to claim 1, characterized in that: The second connecting rod (5) includes a swing shaft (51), a connecting block (52) and a slider (53), the second rotation fulcrum is fixedly connected to the slider, the connecting block is provided with a slide groove (521), the slider can slide along the slide groove and can be relatively fixed, the swing shaft passes through the mounting seat, and one end of the swing shaft is fixedly connected to the connecting block, and the other end is fixedly connected to the cutter head assembly.

3. The pull rod superfinishing grinding head according to claim 1, characterized in that: The cutter head assembly comprises a cutter head structure, wherein the cutter head structure comprises a cutter head (21), a cutter head seat (22) and a fixing seat (23), wherein the root of the cutter head is fixedly mounted on the cutter head seat, and the root of the cutter head seat is detachably mounted on the fixing seat.

4. The pull rod superfinishing grinding head according to claim 3, characterized in that: The cutter head assembly also includes a base (24), an upper abutment (25) and a lower abutment (26); the base is provided with a strip groove (241); one end of the fixed seat is inserted into the strip groove; the lower abutment is located between one side of the fixed seat and the strip groove; one end of the upper abutment contacts the other end of the fixed seat; the upper abutment is driven by a driving member to act on the fixed seat, so that the cutter head is always in close contact with the part of the workpiece to be ground.

5. The pull rod superfinishing grinding head according to claim 3, characterized in that: The working surface of the cutter head is an arc-shaped surface that matches the part to be ground of the workpiece.

6. The pull rod superfinishing grinding head according to claim 4, characterized in that: The lower abutting member is an elastic member.

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