阅读说明：本技术 一种汽车轮毂柔性加工夹具 (Flexible machining clamp for automobile hub ) 是由 牛韬 张自元 涂桥安 于 2021-01-05 设计创作，主要内容包括：本发明公开了一种汽车轮毂柔性加工夹具,包括夹爪、夹爪驱动座和夹爪盘,所述夹爪驱动座活动设置在夹爪盘中部空心位置,在夹爪驱动座的外壁上均布有若干个沿着夹爪盘轴向倾斜设置的驱动槽；若干个夹爪沿着夹爪盘径向方向滑动连接在夹爪盘上,在每个夹爪上设置滑动臂,每个夹爪通过滑动臂与一个所述驱动槽滑动适配连接,在每个夹爪上设有呈多台阶分布的圆弧形夹爪槽,用于匹配多尺寸轮毂。本发明在每个夹爪上设有若干个呈台阶状分布的圆弧夹爪槽,在无需拆卸情况下实现对不同尺寸轮毂的夹持,提高了加工效率,降低使用成本。本发明设计的夹爪驱动座结构采用六面体的结构,使分度更准确。(The invention discloses a flexible machining clamp for an automobile hub, which comprises a clamping jaw, a clamping jaw driving seat and a clamping jaw disc, wherein the clamping jaw driving seat is movably arranged at a hollow position in the middle of the clamping jaw disc, and a plurality of driving grooves which are obliquely arranged along the axial direction of the clamping jaw disc are uniformly distributed on the outer wall of the clamping jaw driving seat; the clamping jaws are connected to the clamping jaw disc in a sliding mode in the radial direction of the clamping jaw disc, a sliding arm is arranged on each clamping jaw, each clamping jaw is connected with one driving groove in a sliding and adaptive mode through the sliding arm, and arc-shaped clamping jaw grooves distributed in a multi-step mode are formed in each clamping jaw and used for being matched with hubs of multiple sizes. According to the invention, each clamping jaw is provided with the plurality of arc clamping jaw grooves distributed in the step shape, so that the hubs with different sizes can be clamped without being disassembled, the processing efficiency is improved, and the use cost is reduced. The clamping jaw driving seat structure designed by the invention adopts a hexahedral structure, so that the indexing is more accurate.)

1. The utility model provides a flexible processing anchor clamps of automobile wheel hub which characterized in that: the clamping jaw driving mechanism comprises a clamping jaw (1), a clamping jaw driving seat (2) and a clamping jaw disc (3), wherein the clamping jaw driving seat (2) is movably arranged at a hollow position in the middle of the clamping jaw disc (3), and a plurality of driving grooves (200) which are obliquely arranged along the axial direction of the clamping jaw disc (3) are uniformly distributed on the outer wall of the clamping jaw driving seat (2); a plurality of clamping jaws (1) are connected to the clamping jaw plate (3) in a sliding mode along the radial direction of the clamping jaw plate (3), a sliding arm (12) is arranged on each clamping jaw (1), each clamping jaw (1) is connected with one driving groove (200) in a sliding and adaptive mode through the sliding arm (12), and arc-shaped clamping jaw grooves (100) distributed in a multi-step mode are formed in each clamping jaw (1) and used for being matched with hubs of multiple sizes.

2. The automobile hub flexible processing clamp of claim 1, characterized in that: the clamping jaw plate is characterized by further comprising a pull rod assembly and a base (32), wherein the clamping jaw plate (3) is connected to the upper part of the base (32); the pull rod assembly is sleeved in the middle of the base (32), the upper end of the pull rod assembly is connected with the clamping jaw driving seat (2) in a positioning mode, and the lower end of the pull rod assembly is connected with the power device in a transmission mode; the pull rod component drives the clamping jaw driving seat (2) to do axial lifting motion under the action of the power device, and further drives the clamping jaw (1) to do radial unclamping motion along the clamping jaw disc (3).

3. The automobile hub flexible processing clamp of claim 2, characterized in that: the inclination angle of the driving groove (200) is 11-12 degrees from bottom to top, so that the self-locking function of the sliding arm (12) and the driving groove (200) is realized.

4. The automobile hub flexible processing clamp of claim 1, 2 or 3, characterized in that: six groups of driving grooves (200) are uniformly formed in the outer wall of the clamping jaw driving seat (2), and each group of driving grooves (200) is correspondingly connected with a sliding arm (12) of one group of clamping jaws.

5. The automobile hub flexible processing clamp of claim 4, characterized in that: the clamping jaw driving seat (2) is of a regular hexahedron structure, and each surface is provided with a group of driving grooves (200).

6. The automobile hub flexible processing clamp of claim 5, characterized in that: clamping jaw drive seat (2) are equipped with a plurality of groups T-shaped grooves including drive slide (21) and drive slider (22) on drive slide (21), and per two drive slider (22) set up and form drive groove (200) in a set of T-shaped inslot, drive slider (22) be equipped with T shape portion of T-shaped groove complex to guarantee the installation stability of drive slider (22) on drive slide (21).

7. The automobile hub flexible processing clamp of claim 4, characterized in that: a guide structure is arranged between the pull rod assembly and the base (32).

8. The automobile hub flexible processing clamp of claim 7, characterized in that: the pull rod group rod comprises a guide disc (23), a plurality of limiting grooves (235) are formed in the outer wall of the guide disc (23), limiting blocks (5) are arranged on the base (32), the upper ends of the limiting blocks (5) are inserted into the limiting grooves (235), and the guide matching is achieved between the limiting grooves and the limiting blocks.

9. The automobile hub flexible processing clamp of claim 1, characterized in that: the clamping jaw (1) is a replaceable part and is provided with various dimensions.

10. The automobile hub flexible processing clamp of claim 1, characterized in that: each group of clamping jaws (1) is at least provided with a two-stage step structure which is matched with the sizes of hubs with two specifications.

The technical field is as follows:

the invention relates to a flexible machining clamp for an automobile hub, and belongs to automobile hub machining equipment.

Background art:

at present, a hub flexible machining clamp is divided into a first-order clamp and a second-order clamp, wherein the first-order clamp is mainly used for a first machining procedure of an automobile hub, is configured on a single-station double-cutter tower vertical lathe and is used for realizing flexible machining of the hub; the second-order clamp is still in a starting stage in the technical aspect, most of the existing hub machining clamps can only realize machining of a single hub, and the hub machining of retail markets with different sizes, strong individuality and small batches is realized by manually adjusting a tool. The machine adjusting time is long, and the production efficiency is greatly reduced.

The invention content is as follows:

the invention provides a flexible machining clamp for an automobile hub, which aims to solve the problems in the prior art.

The technical scheme adopted by the invention is as follows:

a flexible machining clamp for an automobile hub comprises clamping jaws, a clamping jaw driving seat and a clamping jaw disc, wherein the clamping jaw driving seat is movably arranged at a hollow position in the middle of the clamping jaw disc, and a plurality of driving grooves which are obliquely arranged along the axial direction of the clamping jaw disc are uniformly distributed on the outer wall of the clamping jaw driving seat; the clamping jaws are connected to the clamping jaw disc in a sliding mode in the radial direction of the clamping jaw disc, a sliding arm is arranged on each clamping jaw, each clamping jaw is connected with one driving groove in a sliding and adaptive mode through the sliding arm, and arc-shaped clamping jaw grooves distributed in a multi-step mode are formed in each clamping jaw and used for being matched with hubs of multiple sizes.

The clamping jaw plate is connected to the upper portion of the base; the pull rod assembly is sleeved in the middle of the base, the upper end of the pull rod assembly is connected with the clamping jaw driving seat in a positioning mode, and the lower end of the pull rod assembly is connected with the power device in a transmission mode; the pull rod assembly drives the clamping jaw driving seat to perform axial lifting motion under the action of the power device, and further drives the clamping jaws to perform radial unclamping motion along the clamping jaw disc.

Furthermore, the inclination angle of the driving groove is 11-12 degrees from bottom to top, so that the self-locking function of the sliding arm and the driving groove is realized.

Furthermore, six groups of driving grooves are uniformly formed in the outer wall of the clamping jaw driving seat, and each group of driving grooves is correspondingly connected with the sliding arm of one group of clamping jaws.

Furthermore, the clamping jaw driving seat is of a regular hexahedron structure, and each surface of the clamping jaw driving seat is provided with a group of driving grooves.

Furthermore, the clamping jaw driving seat comprises a driving sliding seat and driving sliding blocks, a plurality of groups of T-shaped grooves are formed in the driving sliding seat, every two driving sliding blocks are arranged in one group of T-shaped grooves to form driving grooves, and the driving sliding blocks are provided with T-shaped parts matched with the T-shaped grooves so as to ensure the installation stability of the driving sliding blocks on the driving sliding seat.

Furthermore, a guide structure is arranged between the pull rod assembly and the base.

Furthermore, the pull rod group rod comprises a guide disc, a plurality of limiting grooves are formed in the outer wall of the guide disc, limiting blocks are arranged on the base, the upper ends of the limiting blocks are inserted into the limiting grooves, and the limiting blocks and the limiting grooves are in guiding fit.

Further, the clamping jaw is a replaceable part and is provided with various dimensions.

Furthermore, the group clamping jaws are at least provided with two-stage step structures which are matched with the sizes of the hubs with two specifications.

Compared with the prior art, the invention has the following beneficial effects:

1) according to the invention, each clamping jaw is provided with the plurality of arc clamping jaw grooves distributed in the step shape, so that the hubs with different sizes can be clamped without being disassembled, the processing efficiency is improved, and the use cost is reduced.

2) The clamping jaw driving seat structure designed by the invention adopts a hexahedral structure, so that the indexing is more accurate. The driving slide blocks assembled on the workpiece are identical in structure, the consistency is guaranteed, and the tolerance of the workpiece is small. And meanwhile, the design of six clamping jaws is adopted, so that the problem that the hub is easy to deform due to the existing three clamping jaw structure is solved. The design that the driving slide block is assembled on the clamping jaw driving seat is adopted, and the clamping jaw driving seat can be directly assembled without disassembly after the dynamic balance is tested after the assembly.

3) The driving groove is obliquely arranged in the axial direction, and the inclination angle of the driving groove is 11-12 degrees from bottom to top, so that the self-locking of the position between the clamping jaw driving seat and the clamping jaw can be realized, and the clamping jaw driving seat and the clamping jaw cannot slide relatively in the operation process of the clamp.

4) The invention designs a sealing structure, namely an upper sealing cover, a lower sealing cover and a sealing cover, which fully considers the working condition environment in the processing, and effectively isolates the erosion of external oil stains and cutting fluid.

5) The clamping jaw and the clamping jaw driving seat in the invention adopt a guide form of a plane pair, and the structure is safe and stable, and the action is stable and reliable.

6) The structure of the clamping jaw is a detachable and replaceable structure, the structure of the clamping jaw driving seat is also a detachable structure, the stability of structural assembly is good, the assembly and disassembly are convenient, the structure is a detachable structure, the replacement of a quick-wear part is convenient, and the material utilization rate is high.

Description of the drawings:

FIG. 1 is a block diagram of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a three-dimensional block diagram of the present invention;

FIG. 4 is a plan view of the present invention;

FIG. 5 is a view of the mounting of the jaws and jaw drive socket on the jaw plate of the present invention;

FIG. 6 is a view showing the mounting structure of the clamping jaw on the clamping jaw driving seat;

FIG. 7 is a view of the mounting of the jaws on the jaw drive socket of the present invention;

FIG. 8 is a structural diagram of a limiting block in the present invention;

FIG. 9 is a view showing the construction of the disc holder according to the present invention;

FIG. 10 is a structural diagram of a position-limiting element according to the present invention;

fig. 11 is a structural view of the slider arm mounted on the disc base through the stopper according to the present invention.

In the figure: 1-a clamping jaw; 11-a jaw body; 12-a sliding arm; 13-a limiting seat; 14-a limit baffle; 100-arc shaped jaw slots; 120-a sliding head; 121-a slider part; 1222-a fitting groove; 1111-assembling ribs;

2-a clamping jaw driving seat; 21-driving the slide; 22-driving the slider; 23-a guide disc; 24-a platen; 25-a tie rod connection seat; 200-a drive slot; 210-a first circular aperture; 211-a mounting groove; 231-a first boss; 235-a limit groove; 252-a second boss;

3-a jaw plate; 31-a disc seat; 32-a base; 33-covering by using a cover; 34-lower cover; 38-a sealing cover; 311-jaw sliding grooves; 312-limiting rib plates; 313-a stop; 314-positioning step; 3200-notch;

5-a limiting block;

the specific implementation mode is as follows:

the invention will be further described with reference to the accompanying drawings.

The first embodiment is as follows:

as shown in fig. 1 to 4, the automobile hub flexible processing clamp of the invention comprises a clamping jaw 1, a clamping jaw driving seat 2 and a clamping jaw disc 3, wherein the middle part of the clamping jaw disc 3 is hollow, and the clamping jaw driving seat 2 is arranged at 6 hollow parts of the clamping jaw disc 3. A plurality of groups of driving grooves 200 which are obliquely arranged along the axial direction of the clamping jaw disc 3 are uniformly distributed on the outer wall of the clamping jaw driving seat 2 and are used for installing the clamping jaws 1. The clamping jaw device comprises a plurality of groups of clamping jaws 1, wherein the clamping jaws 1 are connected to a clamping jaw disc 3 in a sliding mode along the radial direction of the clamping jaw disc 3, each clamping jaw 1 is provided with a sliding arm 12, the number of the sliding arms 12 is the same as that of driving grooves 200, each clamping jaw 1 is connected with one group of driving grooves 200 in a sliding adaptive mode through the sliding arm 12, each clamping jaw 1 is provided with an arc-shaped clamping jaw groove 100, the clamping jaw grooves are arc-shaped clamping jaw grooves distributed in a multi-step mode, and each step is used for. When changing machining hubs, different stepped circular arc-shaped jaw grooves can be used.

In the invention, the clamping jaw plate 3 is connected to the upper part of the base 32 and is used for supporting the clamping jaw plate 3 and the clamping jaw 1. The middle part of the base 32 is sleeved with a pull rod assembly, the upper end of the pull rod assembly is connected with the clamping jaw driving seat 2 in a positioning mode, and the lower end of the pull rod assembly is connected with a power device in a transmission mode.

The pull rod assembly can drive the clamping jaw driving seat 2 to do axial lifting motion under the action of the power device, the driving groove 200 which is axially and obliquely arranged on the clamping jaw disc 3 is inclined inwards from bottom to top, the clamping jaw 1 is driven by the clamping jaw driving seat 2 to do radial motion along the clamping jaw disc 3, and when the pull rod assembly moves upwards, the clamping jaw loosens the hub; when the pull rod assembly moves downwards, the clamping jaws clamp the hub; the clamping loosening motion of the clamping jaw can be realized.

Example two:

a further alternative design of this embodiment is that, as shown in fig. 6, the inclination angle of the driving slot 200 is inclined from bottom to top inwards by an angle of 11-12 °; and the sliding arm of each clamping jaw is also in inclined structure to be matched and connected with the inclined surface of the driving groove 200. The design of the inclined angle can realize the self-locking function of the clamping sliding arm 12 and the driving groove 200 during clamping. The clamp and the base do not slide relatively in the high-speed operation process, and are stable and reliable.

Example three:

a further alternative of the present example is that the jaw drive socket 2, as shown in fig. 5 to 8, comprises a drive slide 21 and a drive slide 22. The pull rod group rod comprises a guide disc 23, a pressure plate 24 and a pull rod connecting seat 25.

A guide structure is arranged between the guide disc 23 and the base 32, the driving slide seat 21 is fixedly connected with the guide disc 23 through screws, the pull rod connecting seat 25 penetrates through the guide disc 23 and is fixedly connected with the pressing plate 24, the pressing plate 24 is arranged in the driving slide seat 21, and the pressing plate 24 axially positions the pull rod connecting seat 25 on the guide disc 23. The guide disc 23 drives the clamping jaw driving seat 2 to move directionally through the pull rod connecting seat 25.

In the clamping jaw driving seat 2, a plurality of mounting grooves 211 are uniformly distributed on the outer wall of the driving sliding seat 21, two driving sliding blocks 22 are fixed in each mounting groove 211, and a driving groove 200 is formed between the two driving sliding blocks 22.

The driving groove 200 is obliquely arranged, and the included angle between the driving groove 200 and the axis of the clamping jaw disc 3 is 11 degrees.

In order to ensure the connection and fastening between the driving slider 22 and the driving slider 21, the mounting groove 211 is a T-shaped groove structure, and correspondingly, a T-shaped portion is disposed on the back surface of the driving slider 22, and the mounting stability of the driving slider 22 on the driving slider 21 is ensured by the cooperation between the T-shaped portion and the T-shaped groove structure.

The driving sliding seat 21 is a regular hexahedron structure, each end surface of the driving sliding seat 21 is provided with a mounting groove 211, and a first circular hole 210 with a central hole is arranged in the direction of the center of a circle of the driving sliding seat 21 for facilitating the mounting of the pressing plate 24 and the pull rod connecting seat 25.

In order to facilitate the positioning and installation of the guide disc 23, a first boss 231 is arranged on the upper end surface of the guide disc 23, a second round hole is arranged in the direction of the circle center of the first boss 231, the first boss 231 extends into the first round hole 210, a second boss 252 is arranged on the upper end surface of the pull rod connecting seat 25, the second boss 252 extends into the second round hole, and the upper end surface of the second boss 252 is fixedly connected with the pressing plate 24.

The pull rod connecting seat 25 is provided with a step through hole in the direction of the circle center, and when the pull rod connecting seat is used, a pull rod providing a power source is positioned and installed in the step through hole of the pull rod connecting seat 25.

In order to limit the guide disc 23 in the circumferential direction and avoid the rotation of the guide disc 23 in the clamping jaw disc 3, a plurality of limiting grooves 235 are formed in the outer wall of the guide disc 23, a limiting block 5 is fixed on the inner wall of the base 32, and one end of the limiting block 5 is inserted into the limiting grooves 235.

The limiting block 5 is a right-angle block structure with a horizontal edge and a vertical edge, the vertical edge of the limiting block 5 is inserted into the limiting groove 235, and the horizontal edge is fixedly connected with the inner wall of the clamping jaw disc 3.

Example four:

a further alternative design of the present invention is that, as shown in fig. 3 and 4, the clamping jaw disk 3 of the present invention includes a disk seat 31, a base 32, an upper cover 33 and a lower cover 34, the disk seat 31 is fixedly connected with the base 32, sliding cavities which are mutually communicated are arranged on the disk seat 31 and the base 32, and the clamping jaw driving seat 2 is slidably connected in the sliding cavities. The lower sealing cover 34 is sleeved on the outer wall of the base 32, the lower sealing cover 34 is fixedly connected with the disc seat 31, and the upper sealing cover 33 is fixedly connected with the disc seat 31 and seals the upper port of the upper sliding cavity of the disc seat 31. The horizontal edge of the limiting block 5 is fixed on the notch 3200 of the circumferential surface of the base 32.

The disk base 31 is provided with a plurality of clamping jaw sliding grooves 311, and the clamping jaw 1 is connected in the clamping jaw sliding grooves 311 in a sliding manner.

In order to ensure the tightness of the base 32, a sealing cover 38 is disposed on the base 32, and the sealing cover 38 is used for ensuring the tightness between the pull rod and the base 32.

Example five:

one-step optional design in this example is that the clamping jaw 1 includes a clamping jaw body 11, a sliding arm 12, a limiting seat 13 and a limiting baffle 14, a T-shaped sliding head 120 is arranged at one end of the sliding arm 12, the sliding head 120 is slidably connected in the driving groove 200, an assembling groove 1222 is arranged on the sliding arm 12, an assembling rib 1111 matched with the assembling groove 126 is arranged on the clamping jaw body 11, the assembling rib 1111 is slidably connected in the assembling groove 1222, and the limiting seat 13 and the limiting baffle 14 are fixedly connected around the clamping jaw body 11 and position the clamping jaw body 11 on the sliding arm 12.

The sliding arm 12 includes a sliding rod portion 121 and a mounting portion 122, the sliding rod portion 121 is a rectangular rod structure, a T-shaped sliding head 120 is disposed at a distal end of one side of the sliding rod portion 121, and the T-shaped sliding head 120 is matched with the driving groove 200 having a corresponding shape, so that the sliding stability can be ensured.

The other end of the slide rod portion 121 is integrally formed with the mounting portion 122, the mounting portion 122 is a rectangular block structure, and the mounting groove 1222 is provided on a side of the mounting portion 122.

Spacing seat 13 is U-shaped plate structure, and limit baffle 14 is the right angle plate structure, and spacing seat 13 and limit baffle 14 fixed connection are around clamping jaw body 11, and spacing seat 13 and limit baffle 14 lower extreme are to arranging four sides of installation department 122 in. The clamping jaw body 11 is detachably arranged on the sliding arm 12 through a limiting seat 13 and a limiting baffle plate 14.

The clamping jaw body 11 and the sliding arm 12 are of a detachable structure, so that replacement and maintenance are convenient, the stability of assembly between the clamping jaw body and the sliding arm is good, and the structure is convenient to assemble and disassemble.

As shown in fig. 9 to 11, in order to more stably connect the clamping jaw 1 to the clamping jaw plate 3 in a sliding manner, a limiting rib plate 312 is provided on the lower end surface of the plate base 31 and on both sides of each clamping jaw sliding groove 311, a U-shaped limiting member 313 is fixed between the two limiting rib plates 312 on both sides of each clamping jaw sliding groove 311, and a positioning step 314 is provided on the inner wall of the limiting member 313.

When the clamping jaw 1 is installed, the clamping jaw body 11, the sliding arm 12, the limiting seat 13 and the limiting baffle 14 are assembled, then the sliding rod part 121 is connected in the clamping jaw sliding groove 311 in a sliding mode, the limiting part 313 is fixedly connected on the clamping jaw sliding groove 311, the sliding rod part 121 is positioned in the clamping jaw sliding groove 311 through the positioning step 314, the sliding rod part 121 is arranged in the clamping jaw sliding groove 311 more stably, and the sliding arm 12, the limiting seat 13 and the limiting baffle 14 are arranged above the disc seat 31.

When the clamp is used, when the clamp performs a clamping action, the spindle pull rod moves downwards, and the spindle pull rod moves downwards together due to the relative fixation among the driving sliding seat 21, the driving sliding block 22, the guide disc 23, the pressing plate 24 and the pull rod connecting seat 25. The relative sliding of the two pairs of plane pairs between the sliding arm 12 and the driving slider 22 converts the up-and-down motion of the main shaft pull rod into the radial motion of the clamping jaws, thereby realizing the clamping function of the arc-shaped clamping jaws on the hub. The loosening action is opposite to the clamping action.

According to the invention, each clamping jaw is provided with the arc clamping jaw grooves distributed in a step shape, so that hubs of different sizes can be automatically clamped, the processing efficiency is improved, and the use cost is greatly reduced.

The design of the invention fully considers the working condition environment in the processing, and particularly designs the sealing structures, namely the upper sealing cover 33, the lower sealing cover 34 and the sealing cover 38, so as to effectively isolate the erosion of external oil stains and cutting fluid.

The clamping jaw and the clamping jaw driving seat are matched by the guide pair, so that the structure is safe and stable, and the action is stable and reliable.

The structure of the clamping jaw is a detachable structure, the structure of the clamping jaw driving seat is also a detachable structure, the structural assembly stability is good, the assembly and disassembly are convenient, the structure is a detachable structure, the replacement of a quick-wear part is convenient, and the material utilization rate is high.

The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.