Workbench for finish machining of rack

Abstract

The workbench comprises a base, a fixing block is fixedly installed on the upper surface of the base, guide rods which are symmetrically distributed are fixedly connected to the upper surface of the fixing block, a lower clamping block is fixedly installed in the center of the upper surface of the fixing block, and a self-locking clamping device is arranged above the fixing block. A self-locking clamping device is fixedly installed on the upper surface of the base and comprises a pressing plate, the outer surface of the guide rod is sleeved with the pressing plate in a sliding mode, and a controller used for controlling the self-locking clamping device is fixedly installed on the upper surface of the base. The clamping device can effectively adapt to racks with different thicknesses and provide stable clamping force when clamping the racks with different thicknesses, so that the clamping device can be automatically locked after clamping a workpiece, additional continuous energy input is not needed, and higher safety and stability are provided.

Description

Technical Field

[0001] The utility model relates to the technical field of rack finishing manufacturing equipment, in particular to a workbench for rack finishing. Background Art

[0002] A rack is a special gear with teeth distributed on a bar-shaped body. Racks are divided into spur racks and helical racks, which are used in pairs with spur cylindrical gears and helical cylindrical gears respectively. The tooth profile of the rack is a straight line rather than an involute, and the tooth surface is a plane, which is equivalent to a cylindrical gear with an infinite pitch circle radius.

[0003] When the existing rack finishing workbench uses a clamping device to clamp the rack to be processed, due to the lack of self-locking function, there are the following problems:

[0004] Unstable clamping force: A clamping device without a self-locking function cannot maintain a constant clamping force. During processing, the clamping force may change due to vibration or other factors, resulting in unstable rack position, which in turn affects processing accuracy and quality.

[0005] Rack slippage: If the clamping device of the workbench cannot provide sufficient anti-slip ability, the rack will slip during the processing, resulting in irregular tooth shape or dimensional deviation, which will affect the performance and life of the rack;

[0006] Safety hazards: During the processing of the rack, the clamping device that lacks a self-locking function will have the risk of loosening. If the clamping device is loose or fails, the rack may accidentally detach from the clamping device, causing a safety accident. Utility Model Content

[0007] The utility model aims to provide a workbench for rack finishing to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a workbench for rack finishing, comprising a base, a fixed block is fixedly installed on the upper surface of the base, the upper surface of the fixed block is fixedly connected to symmetrically distributed guide rods, a lower clamping block is fixedly installed at the center of the upper surface of the fixed block, a self-locking clamping device is arranged above the fixed block, and the self-locking clamping device comprises a pressure plate, the pressure plate is slidably sleeved on the outer surface of the guide rod, and a controller for controlling the self-locking clamping device is fixedly installed on the upper surface of the base.

[0009] Preferably, the self-locking clamping device also includes a lifting cylinder fixedly mounted on the top end of the guide rod, one end of the piston rod of the lifting cylinder is fixedly connected to a mounting plate, and a clamping cylinder is fixedly mounted at the center of the upper surface of the mounting plate.

[0010] Preferably, one end of the piston rod of the clamping cylinder passes through the mounting plate and extends to the lower surface of the mounting plate, the upper surface of the pressure plate is fixedly connected with the first mounting block and the second mounting block, and the lower surface of the mounting plate is fixedly installed with the third mounting block and the fourth mounting block.

[0011] Preferably, the first mounting block, the second mounting block, the third mounting block and the fourth mounting block are symmetrically distributed with the axis of the pressure plate as the symmetry center, the third mounting block is located directly above the first mounting block, and the fourth mounting block is located directly above the second mounting block.

[0012] Preferably, the inner wall of the first mounting block is hinged with a first connecting rod via a pin, the inner wall of the second mounting block is hinged with a second connecting rod via a pin, the outer surface of the third mounting block is hinged with a third connecting rod via a pin, and the outer surface of the fourth mounting block is hinged with a fourth connecting rod via a pin.

[0013] Preferably, the first connecting rod and the third connecting rod are connected by a pin and are hinged with a symmetrically distributed fifth connecting rod, the second connecting rod and the fourth connecting rod are connected by a pin and are hinged with a symmetrically distributed sixth connecting rod, the opposite ends of the fifth connecting rod and the sixth connecting rod are hinged with connecting blocks by pins, and one end of the piston rod of the clamping cylinder is fixedly connected to the upper surface of the connecting block.

[0014] Preferably, an upper clamp block is fixedly installed at the center of the lower surface of the pressure plate, rubber pads are fixedly installed on the lower surface of the upper clamp block and the upper surface of the lower clamp block, a pressure sensor is fixedly installed on the lower surface of the upper clamp block, and the detection end of the pressure sensor passes through the rubber pad and extends to the lower surface of the rubber pad.

[0015] Compared with the prior art, the beneficial effect of the utility model is that the workbench for rack finishing, by providing a self-locking clamping device, can effectively adapt to and provide a stable clamping force when clamping racks of different thicknesses, so that the clamping device can lock itself after clamping the workpiece, without the need for additional continuous energy input, providing higher safety and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a three-dimensional diagram of the lifting cylinder structure of a workbench for rack finishing proposed by the utility model;

[0018] Figure 3 This is a three-dimensional diagram of the fifth connecting rod structure of a workbench for rack finishing proposed by the utility model.

[0019] In the figure: 1. base; 2. fixing block; 3. guide rod; 4. pressure plate; 41. lifting cylinder; 42. mounting plate; 43. clamping cylinder; 44. first mounting block; 45. second mounting block; 46. third mounting block; 47. fourth mounting block; 48. first connecting rod; 49. second connecting rod; 410. third connecting rod; 411. fourth connecting rod; 412. fifth connecting rod; 413. sixth connecting rod; 414. connecting block; 415. upper clamping block; 416. rubber pad; 417. pressure sensor; 5. controller; 6. lower clamping block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 3 The utility model provides a technical solution: a workbench for rack finishing, including a base 1, a fixed block 2 is fixedly installed on the upper surface of the base 1, and the upper surface of the fixed block 2 is fixedly connected with symmetrically distributed guide rods 3, a lower clamping block 6 is fixedly installed at the center of the upper surface of the fixed block 2, a self-locking clamping device is arranged above the fixed block 2, and the self-locking clamping device includes a pressing plate 4, the pressing plate 4 is slidably sleeved on the outer surface of the guide rod 3, and a controller 5 for controlling the self-locking clamping device is fixedly installed on the upper surface of the base 1.

[0022] Furthermore, the self-locking clamping device also includes a lifting cylinder 41 fixedly installed on the top of the guide rod 3. When it is necessary to clamp the racks to be processed of different thicknesses, the lifting cylinder 41 is controlled by the controller 5 to extend or retract the corresponding stroke according to the thickness of the rack. One end of the piston rod of the lifting cylinder 41 is fixedly connected to the mounting plate 42, and a clamping cylinder 43 is fixedly installed at the center of the upper surface of the mounting plate 42.

[0023] Furthermore, one end of the piston rod of the clamping cylinder 43 passes through the mounting plate 42 and extends to the lower surface of the mounting plate 42. The upper surface of the pressing plate 4 is fixedly connected with the first mounting block 44 and the second mounting block 45, respectively. The lower surface of the mounting plate 42 is fixedly installed with the third mounting block 46 and the fourth mounting block 47. The first mounting block 44, the second mounting block 45, the third mounting block 46 and the fourth mounting block 47 are all symmetrically distributed with the axis of the pressing plate 4 as the symmetry center. The third mounting block 46 is located directly above the first mounting block 44, and the fourth mounting block 47 is located directly above the first mounting block 44. 7 is located directly above the second mounting block 45; the inner wall of the first mounting block 44 is hinged with a first connecting rod 48 through a pin, the inner wall of the second mounting block 45 is hinged with a second connecting rod 49 through a pin, the outer surface of the third mounting block 46 is hinged with a third connecting rod 410 through a pin, and the outer surface of the fourth mounting block 47 is hinged with a fourth connecting rod 411 through a pin; the first connecting rod 48 and the third connecting rod 410 are connected by a pin and are hinged with a symmetrically distributed fifth connecting rod 412, the second connecting rod 49 and the fourth connecting rod 411 are connected by a pin and are hinged with a symmetrically distributed fifth connecting rod 412. A sixth connecting rod 413 is hingedly connected and symmetrically distributed. The opposite ends of the fifth connecting rod 412 and the sixth connecting rod 413 are hingedly connected to a connecting block 414 through a pin shaft. One end of the piston rod of the clamping cylinder 43 is fixedly connected to the upper surface of the connecting block 414. The clamping cylinder 43 is started by the controller 5. Through the mutual cooperation between the first connecting rod 48, the second connecting rod 49, the third connecting rod 410, the fourth connecting rod 411, the fifth connecting rod 412, the sixth connecting rod 413 and the connecting block 414, the pressing plate 4 is driven to slide downward along the Y direction of the guide rod 3. The upper clamping block 415 and the rubber pad 416 installed on the upper clamping block 415 start to clamp the rack to be processed. Finally, after the clamping cylinder 43 is fully extended, the dead point between the first connecting rod 48 and the third connecting rod 410 and the dead point between the second connecting rod 49 and the fourth connecting rod 411 are used to achieve the effect of self-locking clamping of the rack to be processed. The mutual cooperation process between the first connecting rod 48, the second connecting rod 49, the third connecting rod 410, the fourth connecting rod 411, the fifth connecting rod 412, the sixth connecting rod 413 and the connecting block 414 is as follows:

[0024] The clamping cylinder 43 drives the connecting block 414 to slide downward along the Y direction of the guide rod 3 through the piston rod, and at the same time, drives the fifth connecting rod 412 on the left side of the connecting block 414 to rotate clockwise with the axis of the pin on the left side of the connecting block 414 as the center, and the sixth connecting rod 413 on the right side of the connecting block 414 to rotate counterclockwise with the axis of the pin on the right side of the connecting block 414 as the center;

[0025] When the fifth connecting rod 412 moves, it drives the third connecting rod 410 to rotate clockwise around the axis of the pin at the third mounting block 46, and the first connecting rod 48 to rotate counterclockwise around the axis of the pin at the first mounting block 44;

[0026] When the sixth connecting rod 413 moves, it drives the fourth connecting rod 411 to rotate counterclockwise around the axis of the pin at the fourth mounting block 47 , and the second connecting rod 49 to rotate clockwise around the axis of the pin at the second mounting block 45 .

[0027] Furthermore, an upper clamping block 415 is fixedly installed at the center of the lower surface of the pressure plate 4, and rubber pads 416 are fixedly installed on the lower surface of the upper clamping block 415 and the upper surface of the lower clamping block 6. A pressure sensor 417 is fixedly installed on the lower surface of the upper clamping block 415, and the detection end of the pressure sensor 417 extends to the lower surface of the rubber pad 416 after passing through the rubber pad 416. The pressure sensor 417 can realize real-time detection of the clamping force of the self-locking clamping device on the rack to be processed after extension or contraction, thereby ensuring that the self-locking clamping device can effectively adapt to and provide stable clamping force when clamping racks of different thicknesses.

[0028] By setting up a self-locking clamping device, it is ensured that it can effectively adapt to and provide a stable clamping force when clamping racks of different thicknesses, so that the clamping device can lock itself after clamping the workpiece without the need for additional continuous energy input, providing higher safety and stability.

[0029] Working principle: Step 1, first, place the rack to be processed on the rubber pad 416 located above the lower clamping block 6, then, the controller 5 controls the clamping cylinder 43 to start, and through the cooperation between the first connecting rod 48, the second connecting rod 49, the third connecting rod 410, the fourth connecting rod 411, the fifth connecting rod 412, the sixth connecting rod 413 and the connecting block 414, the pressing plate 4 is driven to slide downward along the Y direction of the guide rod 3, driving the upper clamping block 415 and the upper clamping block 415 installed on the upper clamping block 415. The rubber pad 416 begins to clamp the rack to be processed. Finally, after the clamping cylinder 43 is fully extended, the dead point between the first connecting rod 48 and the third connecting rod 410 and the dead point between the second connecting rod 49 and the fourth connecting rod 411 are used to achieve the effect of self-locking clamping of the rack to be processed. The mutual cooperation process between the first connecting rod 48, the second connecting rod 49, the third connecting rod 410, the fourth connecting rod 411, the fifth connecting rod 412, the sixth connecting rod 413 and the connecting block 414 is as follows:

[0030] The clamping cylinder 43 drives the connecting block 414 to slide downward along the Y direction of the guide rod 3 through the piston rod, and at the same time, drives the fifth connecting rod 412 on the left side of the connecting block 414 to rotate clockwise with the axis of the pin on the left side of the connecting block 414 as the center, and the sixth connecting rod 413 on the right side of the connecting block 414 to rotate counterclockwise with the axis of the pin on the right side of the connecting block 414 as the center;

[0031] When the fifth connecting rod 412 moves, it drives the third connecting rod 410 to rotate clockwise around the axis of the pin at the third mounting block 46, and the first connecting rod 48 to rotate counterclockwise around the axis of the pin at the first mounting block 44;

[0032] When the sixth connecting rod 413 moves, it drives the fourth connecting rod 411 to rotate counterclockwise around the axis of the pin at the fourth mounting block 47, and the second connecting rod 49 to rotate clockwise around the axis of the pin at the second mounting block 45.

[0033] Step 2. When it is necessary to clamp racks to be processed of different thicknesses, the lifting cylinder 41 is controlled by the controller 5 to extend or retract the corresponding stroke according to the thickness of the rack, and the clamping force of the self-locking clamping device on the rack to be processed after extension or retraction is detected in real time through the pressure sensor 417, to ensure that the self-locking clamping device can effectively adapt to and provide stable clamping force when clamping racks of different thicknesses.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A workbench for rack finishing, comprising a base (1), characterized in that: A fixed block (2) is fixedly mounted on the upper surface of the base (1), and a symmetrically distributed guide rod (3) is fixedly connected to the upper surface of the fixed block (2). A lower clamping block (6) is fixedly mounted at the center of the upper surface of the fixed block (2). A self-locking clamping device is arranged above the fixed block (2), and the self-locking clamping device includes a pressure plate (4), and the pressure plate (4) is slidably sleeved on the outer surface of the guide rod (3). A controller (5) for controlling the self-locking clamping device is fixedly mounted on the upper surface of the base (1).

2. A rack finishing workbench according to claim 1, characterized in that: The self-locking clamping device also includes a lifting cylinder (41) fixedly mounted on the top of the guide rod (3), one end of the piston rod of the lifting cylinder (41) is fixedly connected to a mounting plate (42), and a clamping cylinder (43) is fixedly mounted at the center of the upper surface of the mounting plate (42).

3. A rack finishing workbench according to claim 2, characterized in that: One end of the piston rod of the clamping cylinder (43) passes through the mounting plate (42) and then extends to the lower surface of the mounting plate (42); the upper surface of the pressure plate (4) is fixedly connected with a first mounting block (44) and a second mounting block (45); the lower surface of the mounting plate (42) is fixedly installed with a third mounting block (46) and a fourth mounting block (47).

4. A rack finishing workbench according to claim 3, characterized in that: The first mounting block (44), the second mounting block (45), the third mounting block (46) and the fourth mounting block (47) are all symmetrically distributed with the axis of the pressure plate (4) as the symmetry center; the third mounting block (46) is located directly above the first mounting block (44), and the fourth mounting block (47) is located directly above the second mounting block (45).

5. A rack finishing workbench according to claim 4, characterized in that: The inner wall of the first mounting block (44) is hinged with a first connecting rod (48) via a pin, the inner wall of the second mounting block (45) is hinged with a second connecting rod (49) via a pin, the outer surface of the third mounting block (46) is hinged with a third connecting rod (410) via a pin, and the outer surface of the fourth mounting block (47) is hinged with a fourth connecting rod (411) via a pin.

6. A rack finishing workbench according to claim 5, characterized in that: The first connecting rod (48) and the third connecting rod (410) are connected by a pin shaft and are hinged with a symmetrically distributed fifth connecting rod (412); the second connecting rod (49) and the fourth connecting rod (411) are connected by a pin shaft and are hinged with a symmetrically distributed sixth connecting rod (413); the opposite ends of the fifth connecting rod (412) and the sixth connecting rod (413) are hinged with a connecting block (414) by a pin shaft, and one end of the piston rod of the clamping cylinder (43) is fixedly connected to the upper surface of the connecting block (414).

7. A rack finishing workbench according to claim 6, characterized in that: An upper clamping block (415) is fixedly mounted at the center of the lower surface of the pressure plate (4), a rubber pad (416) is fixedly mounted on the lower surface of the upper clamping block (415) and the upper surface of the lower clamping block (6), a pressure sensor (417) is fixedly mounted on the lower surface of the upper clamping block (415), and a detection end of the pressure sensor (417) passes through the rubber pad (416) and extends to the lower surface of the rubber pad (416).

Images