Core shaft knurling connecting and assembling device

Abstract

The utility model provides a knurling connecting and assembling device for a mandrel, and aims to solve the technical problem that the existing positioning mode for the mandrel is easy to cause the increase of the assembling error. The assembling device comprises a rack; the supporting plate is arranged on the rack, the top surface of the supporting plate is a working surface, at least three positioning grooves are formed in the supporting plate, and all the positioning grooves are annularly distributed and are distributed in a divergent manner; the positioning blocks are slidably arranged in all the positioning grooves in a one-to-one correspondence mode, and the distances between the ends, close to each other, of all the positioning blocks and the positioning grooves are equal; and the driving assembly is arranged on the supporting plate, is in power connection with all the positioning blocks and is used for driving all the positioning blocks to move at the same speed and in the same direction. The position of the core shaft is determined and fixed through the multiple positioning blocks and the top face of the supporting plate, the problem that the core shaft inclines in the positioning process can be avoided, and errors in the assembling process are reduced accordingly.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile production and manufacturing, in particular to a core shaft knurling connection and assembly device. Background Art

[0002] The principle of knurling is to connect two different materials together by making them bite each other. Axial knurling is to use a knurling cutter to roll a triangular groove on the surface of the mandrel with the tooth tip parallel to the axis, and then press a cam with a circular inner hole into the mandrel, or press the mandrel into the inner hole of the cam.

[0003] At present, when assembling the mandrel and the cam, the positioning of the mandrel is mainly carried out by pressing and positioning at multiple points on the side. This method easily causes the mandrel to tilt, resulting in increased assembly errors. Utility Model Content

[0004] In view of the technical problem that the current positioning method for the mandrel easily causes an increase in assembly error, the utility model provides a mandrel knurling connection assembly device, which has the advantage of reducing the assembly error.

[0005] The technical solution of the utility model is:

[0006] A mandrel knurling connection assembly device, comprising:

[0007] frame;

[0008] A support plate is arranged on the frame, and its top surface is a working surface. The support plate has at least three positioning grooves, all of which are distributed in a ring shape and in a divergent shape;

[0009] A plurality of positioning blocks are slidably disposed in all the positioning slots in a one-to-one correspondence, and the spacing between all the positioning blocks and the positioning slots close to one end is equal;

[0010] The driving assembly is arranged on the supporting plate and is connected to all the positioning blocks in a power manner and is used to drive all the positioning blocks to move at the same speed and direction.

[0011] Optionally, the bottom end of the positioning block passes through a positioning slot, and the driving assembly includes:

[0012] A plurality of connecting plates are arranged corresponding to all the positioning blocks, the connecting plates are arranged in an inclined manner on one end of the positioning block located below the positioning groove, all the connecting plates are distributed in a ring shape, and the ends of all the connecting plates away from the positioning blocks are close to each other;

[0013] A pressure ring, located below the support plate and slidably connected to the sides of all the connecting plates;

[0014] The motor has an output shaft which is dynamically connected to the pressing ring and is used to drive the pressing ring to move in a vertical direction.

[0015] Optionally, the driving assembly further includes:

[0016] A plurality of connecting frames are arranged on the pressing ring, wherein the middle of the connecting frames has a threaded hole, and the axis of the threaded hole is colinear with the axis of the pressing ring;

[0017] A screw, one end of which is rotatably connected to the bottom surface of the support plate, and the other end of which is coaxially connected to the output shaft of the motor;

[0018] Wherein, all the positioning grooves are evenly distributed around a circumference of the screw rod, and the motor is arranged on a frame.

[0019] Optionally, each positioning groove is provided with a spring, the spring is located in one end of all the positioning grooves close to each other, and one end of the spring abuts against the positioning block.

[0020] Optionally, a plurality of limit rods are provided at the bottom of the support plate;

[0021] The connecting frame comprises a plurality of connecting rods, and the connecting rods are movably arranged on the limiting rods through sliding holes.

[0022] Optionally, one end of all the connecting rods away from the supporting plate is fixed on a positioning plate;

[0023] The screw rod passes through the positioning plate and is rotatably connected to the positioning plate.

[0024] Optionally, a guide rod is provided in each of the positioning grooves, and the positioning block has a through hole matching the guide rod;

[0025] The spring is sleeved on the guide rod.

[0026] Optionally, two limit blocks are respectively provided on both sides of the positioning block, and two of the limit blocks are located above the support plate, and the other two limit blocks are located below the support plate, and all the limit blocks are in sliding contact with the support plate.

[0027] Compared with the prior art, the beneficial effects of the utility model are:

[0028] A positioning groove is provided on the support plate, and a positioning block is slidably provided in the positioning groove. When positioning the mandrel, the mandrel is placed on the support plate and located at one end where all the positioning grooves are close to each other, and then all the positioning blocks are driven by the driving assembly to move synchronously in all the positioning grooves, so that all the positioning blocks are close to the mandrel at the same time, thereby determining the position of the mandrel, and the mandrel is fixed by squeezing the mandrel by all the positioning blocks.

[0029] In the technical solution, the position of the mandrel is determined and fixed by a plurality of positioning blocks and the top surface of the support plate, so that the problem of the mandrel tilting during the positioning process can be avoided, thereby reducing the error during assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0032] Figure 2 It is a schematic diagram of the bottom three-dimensional structure of the utility model.

[0033] Figure 3 Schematic diagram of the internal structure of the positioning groove. DETAILED DESCRIPTION

[0034] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the present invention are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0037] Example:

[0038] See also Figure 1-Figure 3A mandrel knurling connection assembly device includes a frame, a support plate 1, a positioning block 2 and a driving assembly. The support plate 1 is arranged on the frame, and the top surface of the support plate 1 is a working surface, and the working surface is on a horizontal plane. A plurality of positioning grooves 3 are arranged on the support plate 1, and all positioning grooves 3 penetrate the top surface and the bottom surface of the support plate 1. Generally, the number of positioning grooves 3 is not less than three. In this embodiment, three positioning grooves 3 are taken as an example for description.

[0039] The three positioning grooves 3 are evenly distributed in radial direction in the length direction, so that the angle between two adjacent positioning grooves 3 in the length direction is 120°, and one end of the three positioning grooves 3 is close to each other. A positioning block 2 is slidably arranged in each positioning groove 3, and the top of the positioning block 2 is located above the working surface. All positioning blocks 2 are in the same position in the positioning groove 3, that is, the spacing between all positioning blocks 2 and one end of the positioning groove 3 close to each other is equal.

[0040] The driving assembly is disposed on the support plate 1 , and the driving assembly can directly drive all the positioning blocks 2 to slide synchronously in the positioning grooves 3 , including moving in the same direction (approaching or moving away from each other) and at the same speed.

[0041] In this embodiment, a positioning groove 3 is provided on the support plate 1, and a positioning block 2 is slidably provided in the positioning groove 3. When positioning the mandrel 4, the mandrel 4 is placed on the support plate 1, and the mandrel 4 is located at one end where all the positioning grooves 3 are close to each other, and then all the positioning blocks 2 are driven by the driving assembly to move synchronously in all the positioning grooves 3, so that all the positioning blocks 2 are close to the mandrel 4 at the same time, thereby determining the position of the mandrel 4, and the mandrel 4 is fixed by squeezing the mandrel 4 by all the positioning blocks 2.

[0042] The driving assembly can be a plurality of cylinders directly connected to each positioning block 2, or a technical solution described later. In this technical solution, the position of the mandrel 4 is determined and fixed by a plurality of positioning blocks 2 and a working surface, so that the mandrel 4 can be prevented from tilting during the positioning process, thereby reducing the error during assembly.

[0043] In one specific embodiment:

[0044] The driving assembly includes a connecting plate 5, a pressing ring 6, a motor 7, a connecting frame 8 and a screw 9. Among them, the bottom end of the positioning block 2 passes through the positioning groove 3, and a connecting plate 5 is fixedly connected to one end of each positioning block 2 located below the support plate 1, and the end of the connecting plate 5 is connected to the end of the positioning block 2, and the connecting plate 5 is arranged in an inclined shape relative to the positioning block 2, so that the outer side of the connecting plate 5 is an inclined surface structure, and at the same time, the ends of all the connecting plates 5 away from the positioning block 2 are arranged close to each other, so that all the connecting plates 5 are also distributed in a ring shape.

[0045] The pressing ring 6 is located below the supporting plate 1, and the pressing ring 6 is sleeved on the outer side of all the connecting plates 5, and the connecting frame 8 is arranged on the inner side of the pressing ring 6. A threaded hole is provided in the middle of the connecting frame 8, and a screw rod 9 is matched in the threaded hole.

[0046] One end of the screw rod 9 is rotatably connected to the bottom surface of the support plate 1, and the axis of the screw rod 9 is perpendicular to the working surface. The other end of the screw rod 9 is coaxially connected to the output shaft of the motor 7, and the motor 7 is fixedly arranged on the frame.

[0047] In this embodiment, the screw 9 is directly driven to rotate by the motor 7, so that the pressure ring 6 is driven to move in the vertical direction through the threaded matching relationship between the screw 9 and the connecting frame 8, and then the pressure ring 6 drives the connecting plate 5 and the positioning block 2 to slide in the positioning groove 3, thereby realizing the positioning of the core shaft 4.

[0048] In another specific embodiment:

[0049] Each positioning groove 3 is provided with a spring 10, which is located in one end of all the positioning grooves 3 that are close to each other, and one end of the spring 10 abuts against the positioning block 2. By providing the spring 10, when the motor 7 drives the pressing ring 6 to move downward, all the positioning blocks 2 can be directly driven by the spring 10 to move away from each other.

[0050] In another specific embodiment:

[0051] A plurality of limit rods 11 are provided at the bottom of the support plate 1, and the connecting frame 8 includes a plurality of connecting rods, each of which is provided with a sliding hole, and the limit rod 11 passes through the sliding hole, so that the connecting rod is movably provided on the limit rod 11 through the sliding hole. By providing the limit rod 11 and by the matching relationship between the connecting rod and the limit rod 11, the rotation of the pressure ring 6 can be directly prevented when the screw rod 9 rotates.

[0052] In another specific embodiment:

[0053] The ends of all connecting rods away from the support plate 1 are fixed on a positioning plate 12, the screw rods 9 pass through the positioning plate 12, and the screw rods 9 are rotatably connected to the positioning plate 12. The positioning plate 12 is provided to position the ends of the screw rods 9 away from the support plate 1.

[0054] In another specific embodiment:

[0055] A guide rod 13 is provided in each positioning groove 3, and a through hole matching the guide rod 13 is provided on the positioning block 2, and the spring 10 is sleeved on the guide rod 13. Two limit blocks 14 are provided on both sides of the positioning block 2, and two limit blocks 14 are located above the support plate 1, and the other two limit blocks 14 are located below the support plate 1, and all the limit blocks 14 are in sliding contact with the support plate 1.

[0056] In this embodiment, the guide rod 13 is provided to limit the moving direction of the positioning block 2 , and the limit block 14 is provided to maintain the position of the positioning block 2 in the positioning groove 3 in the vertical direction.

[0057] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A mandrel knurling connection assembly device, characterized in that: include: frame; A support plate is arranged on the frame, and its top surface is a working surface. The support plate has at least three positioning grooves, all of which are distributed in a ring shape and in a divergent shape; A plurality of positioning blocks are slidably disposed in all the positioning slots in a one-to-one correspondence, and the spacing between all the positioning blocks and the positioning slots close to one end is equal; The driving assembly is arranged on the supporting plate and is connected to all the positioning blocks in a power manner and is used to drive all the positioning blocks to move at the same speed and direction.

2. The mandrel knurling connection assembly device according to claim 1, characterized in that: The bottom end of the positioning block passes through the positioning slot, and the driving assembly includes: A plurality of connecting plates are arranged corresponding to all the positioning blocks, the connecting plates are arranged in an inclined manner on one end of the positioning block located below the positioning groove, all the connecting plates are distributed in a ring shape, and the ends of all the connecting plates away from the positioning blocks are close to each other; A pressure ring, located below the support plate and slidably connected to the sides of all the connecting plates; The motor has an output shaft which is dynamically connected to the pressing ring and is used to drive the pressing ring to move in a vertical direction.

3. The mandrel knurling connection assembly device according to claim 2, characterized in that: The drive assembly also includes: A plurality of connecting frames are arranged on the pressing ring, wherein the middle of the connecting frames has a threaded hole, and the axis of the threaded hole is colinear with the axis of the pressing ring; A screw, one end of which is rotatably connected to the bottom surface of the support plate, and the other end of which is coaxially connected to the output shaft of the motor; Wherein, all the positioning grooves are evenly distributed around a circumference of the screw rod, and the motor is arranged on a frame.

4. The mandrel knurling connection assembly device according to claim 3, characterized in that: Each of the positioning slots is provided with a spring, the spring is located in one end of all the positioning slots that are close to each other, and one end of the spring is in contact with the positioning block.

5. The mandrel knurling connection assembly device according to claim 4, characterized in that: A plurality of limit rods are provided at the bottom of the support plate; The connecting frame comprises a plurality of connecting rods, and the connecting rods are movably arranged on the limiting rods through sliding holes.

6. The mandrel knurling connection assembly device according to claim 5, characterized in that: One end of all the connecting rods away from the supporting plate is fixed on a positioning plate; The screw rod passes through the positioning plate and is rotatably connected to the positioning plate.

7. The mandrel knurling connection assembly device according to claim 6, characterized in that: A guide rod is provided in each of the positioning grooves, and a through hole matching the guide rod is provided on the positioning block; The spring is sleeved on the guide rod.

8. The mandrel knurling connection assembly device according to claim 7, characterized in that: Two limit blocks are respectively arranged on both sides of the positioning block, and two of the limit blocks are located above the support plate, and the other two limit blocks are located below the support plate, and all the limit blocks are in sliding contact with the support plate.

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