Two-station automatic clamp for machining main cylinder body of automobile brake

Abstract

The invention relates to a two-station automatic clamp for machining a main cylinder body of an automobile brake, and belongs to a main cylinder body machining tool in an automobile brake system. The first pressing oil cylinder, the second pressing oil cylinder, the first supporting plate and the second supporting plate are fixedly connected to the clamp fixing plate, the rotatable clamp is rotationally connected with the first supporting plate and the second supporting plate, and the two ends of the swing oil cylinder assembly are hinged to the rotatable clamp and the clamp fixing plate respectively. The automatic structure clamp has the advantages that the structure is novel, and the automatic structure clamp is designed by effectively combining a clamp mechanical structure and a control system of a machine tool. The multi-face machining device solves the problem of machining multiple faces through one-time clamping and automatic face changing in the vertical machining center, improves the machining efficiency and the product quality, achieves machining automation, is suitable for machining all current automobile brake main cylinder bodies, and achieves multi-face machining through one-time clamping in the three-axis vertical machining center.

Description

Technical Field

[0001] The invention belongs to a tool for processing a master cylinder in an automobile brake system, and in particular relates to a two-station automatic clamp for processing a master cylinder of an automobile brake. Background Art

[0002] At present, when machining the main cylinder body on a three-axis machining center, two sets of fixtures are required to complete this process. Fig.11 As shown in the figure, it is a drawing of the main cylinder of the automobile brake. The two different processing surfaces marked 801 and 802 in the figure respectively represent two different processing surfaces. Usually, two sets of different fixtures are required to clamp the workpieces respectively to complete the feature processing on these two surfaces. This not only wastes time, but also affects the cylinder processing accuracy due to repeated clamping, causing parts to be scrapped. There are several specific problems: First, the loading and unloading process of the main cylinder workpiece mainly relies on manual operation, and the operator needs to load and unload parts frequently, which undoubtedly increases the labor intensity. Secondly, the degree of automation of the fixture is not high, and the clamping and loosening functions can only be achieved through the hydraulic cylinder, which limits the space for automation improvement. Furthermore, due to the constraints of the above factors, the processing efficiency cannot be fully improved. Finally, every time a different product is replaced, the corresponding fixture must be replaced, which inevitably causes a waste of resources in the adjustment process. Summary of the invention

[0003] The invention provides a two-station automatic fixture for machining a main cylinder of an automobile brake, so as to solve the problems of low fixture automation, high labor intensity, frequent fixture replacement and low efficiency existing in machining the main cylinder in a three-axis machining center.

[0004] The technical solution adopted by the present invention is to include a clamp fixing plate, a rotatable clamp, a swing cylinder assembly, a clamping cylinder 1, a clamping cylinder 2, a support plate 1 and a support plate 2, wherein the clamping cylinder 1, the clamping cylinder 2, the support plate 1 and the support plate 2 are respectively fixedly connected to the clamp fixing plate, the rotatable clamp is respectively rotatably connected to the support plate 1 and the support plate 2, and the two ends of the swing cylinder assembly are respectively hinged to the rotatable clamp and the clamp fixing plate.

[0005] The fixture fixing plate includes air nozzle quick connector 1, air nozzle quick connector 2, air nozzle quick connector 3, air nozzle quick connector 4, air nozzle quick connector 5, air nozzle quick connector 6, a swing cylinder bracket, a base plate, a horizontal positioning pin 1 and a horizontal positioning pin 2, wherein the air nozzle quick connector 1, air nozzle quick connector 2, air nozzle quick connector 3, air nozzle quick connector 4, air nozzle quick connector 5 and air nozzle quick connector 6 are respectively connected to the air nozzle interface on the base plate, the front end of the bottom of the swing cylinder bracket is fixedly connected to the rear side of the base plate by an inner hexagon bolt, and the horizontal positioning pin 1 and the horizontal positioning pin 2 are respectively fixedly connected to the top of the base plate.

[0006] The rotatable fixture includes processing station one, processing station two, a neutral plate, a 90-degree flip shaft seat, horizontal locating pin three and horizontal locating pin four, wherein processing station one and processing station two have the same structure and are fixedly connected to the neutral plate by bolts respectively, the 90-degree flip shaft seat is fixedly connected to the lower rear part of processing station one and processing station two respectively, and the bottom of processing station one and processing station two is fixedly connected to horizontal locating pin three and horizontal locating pin four respectively.

[0007] The processing station 1 includes a side plate, a main cylinder body flange positioning plate, a positioning sleeve locking nut, a tightening cylinder mounting plate, a tightening cylinder and a rotating positioning pin of a rotatable fixture, wherein the side plate, the main cylinder body flange positioning plate, the tightening cylinder mounting plate and the neutral plate are fixedly connected to each other by bolts to form a frame structure, the positioning sleeve locking nut is installed on the main cylinder body flange positioning plate, the tightening cylinder is fixedly connected to the tightening cylinder mounting plate, and the rotating positioning pin of the rotatable fixture is fixedly connected to the upper surface of the side plate.

[0008] The swing cylinder assembly includes a swing cylinder connecting rod, connecting pin one, connecting pin two and a swing cylinder, wherein the rear end of the swing cylinder is hinged to the swing cylinder bracket of the clamp fixing plate through connecting pin two, and the swing cylinder connecting rod is hinged to the 90-degree flip shaft seat of the rotatable clamp through connecting pin one.

[0009] The first pressing oil cylinder and the second pressing oil cylinder are respectively located at the outer side of the front end of the rotatable clamp.

[0010] The structures of clamping cylinder 1 and clamping cylinder 2 are the same, wherein clamping cylinder 1 is a 90-degree counterclockwise rotating downward pressing cylinder, and its cylinder piston rotates 90 degrees counterclockwise along the axis during the downward pressing process, and clamping cylinder 2 is a 90-degree clockwise rotating downward pressing cylinder, and its cylinder piston rotates 90 degrees clockwise along the axis during the downward pressing process.

[0011] The first clamping oil cylinder comprises an oil cylinder and a pressing plate, wherein the pressing plate is fixedly connected to the top of the oil cylinder piston of the oil cylinder.

[0012] The support plate 1 and the support plate 2 have the same structure.

[0013] The support plate 1 includes an L-shaped vertical plate, an end face bearing, a ball bearing, an axis and a rotating positioning pin of the L-shaped vertical plate, wherein the axis is installed on the long side of the L-shaped vertical plate through the end face bearing and the ball bearing respectively, and is rotatably connected to the long side of the L-shaped vertical plate, and is used to connect a rotatable clamp, and the rotating positioning pin of the L-shaped vertical plate is fixedly connected to the short side of the L-shaped vertical plate.

[0014] The rotating positioning pins 1 and 2 of the rotatable fixture of processing station 1 and processing station 2 of the rotatable fixture are in a vertical state and are positioned against the rotating positioning pins 1 and 2 of the L-shaped vertical plates of support plate 1 and support plate 2.

[0015] The advantages of the present invention are novel structure, and an automatic structural fixture is designed by effectively combining the mechanical structure of the fixture and the control system of the machine tool. The problem of one-time clamping in a vertical machining center and automatic face-changing processing of multiple surfaces is solved, and the processing efficiency and product quality are improved, and processing automation is realized. The present invention is applicable to the processing of all current automobile brake main cylinders, and realizes multi-face processing in one clamping on a three-axis vertical machining center. After the M command is added to the machine tool programming, the fixture allows different hydraulic cylinders to work in a certain order, and realizes the flipping, clamping, and loosening of the fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic structural diagram of a fixture fixing plate 1 of the present invention; Figure 3 It is a structural schematic diagram of the rotatable clamp of the present invention; Figure 4 It is a structural schematic diagram of a processing station 1 of the present invention; Figure 5 It is a schematic diagram of the structure of the positioning of the present invention in a horizontal state; Figure 6 It is a structural schematic diagram of the swing cylinder assembly of the present invention; Figure 7 It is a structural schematic diagram of a clamping oil cylinder 1 of the present invention; Figure 8 It is a structural schematic diagram of a support plate 1 of the present invention; Fig. 9 This is a schematic diagram of the flipping and positioning principle of the present invention; Fig.10 This is a working principle diagram of the 90-degree rotation and pressing of the pressing oil cylinder 1 and the pressing oil cylinder 2 of the present invention; Fig.11 It is a structural schematic diagram of the added main cylinder body of the present invention. DETAILED DESCRIPTION

[0017] See also Figure 1 , including a fixture fixing plate 1, a rotatable fixture 2, a swing cylinder assembly 3, a clamping cylinder 1 4, a clamping cylinder 2 5, a support plate 1 6 and a support plate 2 7, wherein the clamping cylinder 1 4, the clamping cylinder 2 5, the support plate 1 6 and the support plate 2 7 are respectively fixedly connected to the fixture fixing plate 1, the rotatable fixture 2 is respectively rotatably connected to the support plate 1 6 and the support plate 2 7, and the two ends of the swing cylinder assembly 3 are respectively hinged to the rotatable fixture 2 and the fixture fixing plate 1.

[0018] See also Figure 2The fixture fixing plate 1 includes a nozzle quick connector 101, a nozzle quick connector 102, a nozzle quick connector 3 103, a nozzle quick connector 4 104, a nozzle quick connector 5 105, a nozzle quick connector 6 106, a swing cylinder bracket 107, a base plate 108, a horizontal positioning pin 109 and a horizontal positioning pin 2 110, wherein the nozzle quick connector 101, the nozzle quick connector 102, the nozzle quick connector 3 103, the nozzle quick connector 4 104, the nozzle quick connector 5 105 and the nozzle quick connector 6 106 are respectively connected to the nozzle interface on the base plate 108, the front end of the bottom of the swing cylinder bracket 107 is fixedly connected to the rear side of the base plate 108 by an inner hexagon bolt, and the horizontal positioning pin 109 and the horizontal positioning pin 2 110 are respectively fixedly connected to the top of the base plate 108.

[0019] See also Figure 3 , 5 The rotatable fixture 2 includes a processing station 1 201, a processing station 202, a neutral plate 203, a 90-degree flip shaft seat 204, a horizontal positioning pin 3 205 and a horizontal positioning pin 4 206, wherein the processing station 1 201 and the processing station 2 202 have the same structure and are fixedly connected to the neutral plate 203 by bolts respectively, the 90-degree flip shaft seat 204 is fixedly connected to the lower rear part of the processing station 1 201 and the processing station 2 202 respectively, and the bottom of the processing station 1 201 and the processing station 2 202 is fixedly connected to the horizontal positioning pin 3 205 and the horizontal positioning pin 4 206 respectively.

[0020] See also Figure 4 The processing station 1 201 includes a side plate 20101, a main cylinder body flange positioning plate 20102, a positioning sleeve locking nut 20103, a tightening cylinder mounting plate 20104, a tightening cylinder 20105 and a rotating positioning pin 20106 of a rotatable fixture, wherein the side plate 20101, the main cylinder body flange positioning plate 20102, the tightening cylinder mounting plate 20104 and the neutral plate 203 are fixedly connected to each other by bolts to form a frame structure, the positioning sleeve locking nut 20103 is installed on the main cylinder body flange positioning plate 20102, the tightening cylinder 20105 is fixedly connected to the tightening cylinder mounting plate 20104, and the rotating positioning pin 20106 of the rotatable fixture is fixedly connected to the upper surface of the side plate 20101.

[0021] See also Figure 6 The swing cylinder assembly 3 includes a swing cylinder connecting rod 301, a connecting pin 1 302, a connecting pin 2 303 and a swing cylinder 304, wherein the rear end of the swing cylinder 304 is hinged to the swing cylinder bracket 107 of the fixture fixing plate 1 through the connecting pin 2 303, and the swing cylinder connecting rod 301 is hinged to the 90-degree flip shaft seat 204 of the rotatable fixture 2 through the connecting pin 1 302.

[0022] The clamping cylinder 1 4 and the clamping cylinder 2 5 are respectively located at the outer side of the front end of the rotatable clamp 2 .

[0023] The structures of the clamping cylinder 1 4 and the clamping cylinder 2 5 are the same, wherein the clamping cylinder 1 4 is a 90-degree counterclockwise rotating downward pressing cylinder, and its cylinder piston rotates 90 degrees counterclockwise along the axis during the pressing process, and the clamping cylinder 2 5 is a 90-degree clockwise rotating downward pressing cylinder, and its cylinder piston rotates 90 degrees clockwise along the axis during the pressing process.

[0024] See also Figure 7 The clamping oil cylinder 4 comprises an oil cylinder 401 and a pressure plate 402 , wherein the pressure plate 402 is fixedly connected to the top of the oil cylinder piston of the oil cylinder 401 .

[0025] The support plate 1 6 and the support plate 2 7 have the same structure.

[0026] See also Figure 8 The support plate 6 includes an L-shaped vertical plate 601, an end bearing 602, a ball bearing 603, a shaft 604 and a rotation positioning pin 605 of the L-shaped vertical plate, wherein the shaft 604 is installed on the long side of the L-shaped vertical plate 601 through the end bearing 602 and the ball bearing 603 respectively, and is rotatably connected thereto, and is used to connect the rotatable clamp 2, and the rotation positioning pin 605 of the L-shaped vertical plate is fixedly connected to the short side of the L-shaped vertical plate 601.

[0027] The rotating positioning pin 1 20106 and the rotating positioning pin 2 20206 of the rotatable fixture of the processing station 1 201 and the processing station 2 202 of the rotatable fixture 2 are in a vertical state and are positioned against the rotating positioning pin 1 605 and the rotating positioning pin 2 705 of the L-shaped vertical plate of the support plate 1 6 and the support plate 2 7.

[0028] Working principle: See also Figure 1 , when the rotatable clamp 2 is in a horizontal state, let the 90-degree rotating clamping cylinder 1 4 and the clamping cylinder 2 5 press down to clamp it, see Fig.10 , load the main cylinder body 8 blank of the workpiece to be processed, start the machine tool, tighten the workpiece with the tightening cylinder 20105, and the machine tool processes the features of the main cylinder body surface 801; After the processing of the first surface 801 is completed, the clamping oil cylinder 1 4 and the clamping oil cylinder 2 5 are released, and the swing cylinder connecting rod 301 of the swing oil cylinder 304 piston extends forward, and at the same time drives the rotatable clamp to rotate clockwise around the axis 604. When it is turned to the vertical state, the rotation positioning pins of the two L-shaped vertical plates and the rotation positioning pins of the two rotatable clamps allow the clamp to be positioned in the vertical state. At this time, the characteristics of the second surface 802 of the cylinder body are processed, see Fig. 9 , 11 ; After the machining of the second cylinder body surface 802 is completed, the swing cylinder piston retracts and drives the rotatable fixture to rotate counterclockwise around the rotation axis. After the rotatable fixture 2 is restored to a horizontal state, the horizontal positioning pin 109 and the horizontal positioning pin 2 110 on the bottom plate are respectively connected with the horizontal positioning pin 4 206 and the horizontal positioning pin 3 205 at the bottom of the rotatable fixture 2. Figure 5 , let the 90-degree rotating clamping cylinder 1 4 and the clamping cylinder 2 5 press down and clamp, and the top clamping cylinder 20105 retracts to release the main cylinder body 8; manually remove the processed main cylinder body 8.

Claims

1. A two-station automatic fixture for machining a master cylinder of an automobile brake, characterized in that: It includes a fixture fixing plate, a rotatable fixture, a swing cylinder assembly, a clamping cylinder 1, a clamping cylinder 2, a support plate 1 and a support plate 2, wherein the clamping cylinder 1, the clamping cylinder 2, the support plate 1 and the support plate 2 are respectively fixedly connected to the fixture fixing plate, the rotatable fixture is respectively rotatably connected to the support plate 1 and the support plate 2, and the two ends of the swing cylinder assembly are respectively hinged to the rotatable fixture and the fixture fixing plate.

2. The two-station automatic fixture for machining the master cylinder of an automobile brake according to claim 1, characterized in that: The fixture fixing plate includes air nozzle quick connector 1, air nozzle quick connector 2, air nozzle quick connector 3, air nozzle quick connector 4, air nozzle quick connector 5, air nozzle quick connector 6, a swing cylinder bracket, a base plate, a horizontal positioning pin 1 and a horizontal positioning pin 2, wherein the air nozzle quick connector 1, air nozzle quick connector 2, air nozzle quick connector 3, air nozzle quick connector 4, air nozzle quick connector 5 and air nozzle quick connector 6 are respectively connected to the air nozzle interface on the base plate, the front end of the bottom of the swing cylinder bracket is fixedly connected to the rear side of the base plate by an inner hexagon bolt, and the horizontal positioning pin 1 and the horizontal positioning pin 2 are respectively fixedly connected to the top of the base plate.

3. The two-station automatic fixture for machining the master cylinder of an automobile brake according to claim 1, characterized in that: The rotatable fixture includes processing station one, processing station two, a neutral plate, a 90-degree flip shaft seat, horizontal locating pin three and horizontal locating pin four, wherein processing station one and processing station two have the same structure and are fixedly connected to the neutral plate by bolts respectively, the 90-degree flip shaft seat is fixedly connected to the lower rear part of processing station one and processing station two respectively, and the bottom of processing station one and processing station two is fixedly connected to horizontal locating pin three and horizontal locating pin four respectively.

4. The two-station automatic fixture for machining the master cylinder of an automobile brake according to claim 3, characterized in that: The processing station 1 includes a side plate, a main cylinder body flange positioning plate, a positioning sleeve locking nut, a tightening cylinder mounting plate, a tightening cylinder and a rotating positioning pin of a rotatable fixture, wherein the side plate, the main cylinder body flange positioning plate, the tightening cylinder mounting plate and the neutral plate are fixedly connected to each other by bolts to form a frame structure, the positioning sleeve locking nut is installed on the main cylinder body flange positioning plate, the tightening cylinder is fixedly connected to the tightening cylinder mounting plate, and the rotating positioning pin of the rotatable fixture is fixedly connected to the upper surface of the side plate.

5. The two-station automatic fixture for machining the master cylinder of an automobile brake according to claim 1, characterized in that: The swing cylinder assembly includes a swing cylinder connecting rod, connecting pin one, connecting pin two and a swing cylinder, wherein the rear end of the swing cylinder is hinged to the swing cylinder bracket of the clamp fixing plate through connecting pin two, and the swing cylinder connecting rod is hinged to the 90-degree flip shaft seat of the rotatable clamp through connecting pin one.

6. The two-station automatic fixture for machining the master cylinder of an automobile brake according to claim 1, characterized in that: The clamping cylinder 1 and the clamping cylinder 2 are respectively located on the outer side of the front end of the rotatable clamp, and the structures of the clamping cylinder 1 and the clamping cylinder 2 are the same, wherein the clamping cylinder 1 is a 90-degree counterclockwise rotating downward pressing cylinder, and its cylinder piston rotates 90 degrees counterclockwise along the axis during the pressing process, and the clamping cylinder 2 is a 90-degree clockwise rotating downward pressing cylinder, and its cylinder piston rotates 90 degrees clockwise along the axis during the pressing process.

7. The two-station automatic fixture for machining the master cylinder of an automobile brake according to claim 6, characterized in that: The first clamping oil cylinder comprises an oil cylinder and a pressing plate, wherein the pressing plate is fixedly connected to the top of the oil cylinder piston of the oil cylinder.

8. The two-station automatic fixture for machining the master cylinder of an automobile brake according to claim 1, characterized in that: The support plate 1 and the support plate 2 have the same structure.

9. The two-station automatic fixture for machining the master cylinder of an automobile brake according to claim 8, characterized in that: The support plate 1 includes an L-shaped vertical plate, an end face bearing, a ball bearing, an axis and a rotating positioning pin of the L-shaped vertical plate, wherein the axis is installed on the long side of the L-shaped vertical plate through the end face bearing and the ball bearing respectively, and is rotatably connected to the long side of the L-shaped vertical plate, and is used to connect a rotatable clamp, and the rotating positioning pin of the L-shaped vertical plate is fixedly connected to the short side of the L-shaped vertical plate.

10. The two-station automatic fixture for machining the master cylinder of an automobile brake according to claim 9, characterized in that: The rotating positioning pins 1 and 2 of the rotatable fixture of processing station 1 and processing station 2 of the rotatable fixture are in a vertical state and are positioned against the rotating positioning pins 1 and 2 of the L-shaped vertical plates of support plate 1 and support plate 2.

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