CN201102147Y - Guide block rough milling gap clamping arrangement - Google Patents

Abstract

The utility model relates to a clamping device for roughly milling a notch on a guide block. The clamping device comprises an air valve controller, a pressure cylinder, an operating cylinder and a workpiece clamping mechanism; the air valve controller consists of an air valve body and an air valve core controlled by a handle switch; the pressure cylinder arranged on one side of the air valve controller consists of a cylinder body and front and rear covers arranged on both ends of the cylinder body, an oil injection piston, an oil piston and a cylinder piston are arranged in the cylinder body, a high-pressure cylinder passing through the oil piston is arranged between the front cover and the oil injection piston, and the oil inlet tie-in of the operating cylinder is connected with the oil outlet tie-in of the high-pressure cylinder via an oil pipe; the workpiece clamping mechanism consists of a clamp body, a gusset and a pressure plate, a screw bolt penetrates the gusset, the clamp body and the pressure plate and then connected with a nut on the outer side of the pressure plate, one end of a tapered iron is inserted between the clamp body and the gusset, and the other end of the tapered iron is connected with the piston rod of the operating cylinder. Applicable to the clamping processing of various workpieces, the clamping device has the advantages of simple structure and convenient operation.

Description

A guide block rough milling notch clamping device

technical field

The utility model relates to a clamping device, in particular to a rough milling gap clamping device for an accessory guide block of a diesel locomotive.

Background technique

The guide block is an important part in the assembly of diesel engine push rods. The material is 42CrMo. The structure of the guide block is to open a gap with a height of 30 mm, a width of 11 mm and a depth of 52 mm at one end of a cylinder with a diameter of 59.5 mm. the ear pin holes in the center to fit the rollers here. Due to the high precision requirements for the notch of the guide block and the relatively hard material of the workpiece, the rough milling of the notch before the improvement has always been processed on an ordinary X63W milling machine, using special tooling for positioning, clamping with a pressure plate and a nut, and there is only one direction of clamping force. Due to the large cutting depth during guide block processing, the corresponding cutting force increases. When the workpiece is tightened, it is necessary to manually tap the wrench for the fastening nut with a copper rod to tighten the workpiece, otherwise the workpiece is easy to loosen. Therefore the prior art not only restricts the production efficiency, but also the fastening of the workpiece is not easy to be reliable, which easily causes the workpiece to loosen when rough milling the gap, the cutter is damaged, and the workpiece is scrapped.

Contents of the invention

In view of the above problems, the purpose of this utility model is to provide a clamping device for rough milling gaps of guide blocks which is convenient and safe for clamping workpieces, labor-saving, reliable and accurate in positioning, and high in production efficiency.

In order to achieve the above object, the utility model adopts the following technical solutions: a guide block rough milling notch clamping device, which is characterized in that it includes a damper control device, a pressurized oil cylinder, a working oil cylinder and a workpiece clamping mechanism The damper control device includes a damper body and a damper core controlled by a handle switch, a high-pressure air inlet connected to an air source is arranged on the damper body, and the damper core is arranged at circumferential intervals There are three high-pressure air inlets that can be communicated with the high-pressure air inlet; the booster oil cylinder is arranged on one side of the air valve control device, and the booster oil cylinder includes a cylinder body and is arranged on the cylinder body Front and rear covers at both ends, an oil filling piston is arranged in the cylinder body to separate it into front and rear chambers, an oil piston and a cylinder piston are respectively arranged in the front and rear chambers, and an oil piston and a cylinder piston are arranged between the oil piston and the rear chamber Between the front cover, between the oil injection piston and the cylinder piston, and between the cylinder piston and the rear cover, an air inlet and an outlet connected to a high-pressure air inlet on the air valve control device are respectively provided through a ventilation groove ; A high-pressure oil cylinder passing through the oil piston is set between the front cover and the oil injection piston, and a return spring is sleeved on the high-pressure oil cylinder between the oil piston and the oil injection piston, connecting The piston rod of the cylinder piston is inserted in the high-pressure oil cylinder as a high-pressure oil piston, and the oil filling piston is provided with an inclined oil injection nozzle, and the inclined oil injection nozzle communicates with the circumferential and axial directions on the piston rod. Oil injection hole; the working oil cylinder includes an oil cylinder body, a piston is arranged in the oil cylinder body, the piston is connected with a piston rod extending out of the oil cylinder body, and a spring is sleeved on the piston rod in the oil cylinder body; the working The oil inlet joint of the oil cylinder is connected to the oil outlet joint of the high-pressure oil cylinder through the oil pipe; the workpiece clamping mechanism includes a card body, which is provided with a workpiece positioning groove, and a force plate is arranged on one side of the card body. A pressure plate is set on the other side of the workpiece clamped by the workpiece positioning groove, and a bolt rod is pierced on the force plate, the clamp body and the pressure plate, and a nut is connected outside the pressure plate, and the clamp body and the pressure plate are connected. One end of a slanted iron is inserted between the force plates, and the other end of the slanted iron is connected to the piston rod of the working oil cylinder.

A roller is arranged at one end of the top of the reinforcing plate, and the wedge-shaped bottom surface of the inclined iron is seated on the top of the roller.

The air valve body of the air valve control device is marked with three gear positions of 0 gear, 1 gear and 2 gear corresponding to the three high-pressure air inlet holes in the circumferential direction of the damper core, and the 0 gear is connected to the The air inlet and outlet between the cylinder piston and the oil injection piston, the first gear connects the air inlet and outlet between the front cover and the oil piston, and the second gear connects the air inlet and outlet between the rear cover and the cylinder piston Air inlet and outlet.

The inclination angle of the inclined oil nozzle provided on the oil injection piston is 30°.

A positioning device is arranged on the workbench where the workpiece is positioned, each positioning device includes a base, a positioning post is connected to the base, a section of spring is arranged in the positioning post, and a positioning post is provided on the top of the spring. pin.

Filters are respectively connected to the three air inlets and outlets arranged on the cylinder body.

Due to the adoption of the above technical scheme, the utility model has the following advantages: 1. Since the utility model adopts the transformation of gas energy into hydraulic energy, the hydraulic pressure drives the oblique iron to tighten the bolt rod to clamp the workpiece to be processed, thereby replacing the The conventional manual clamping method is used in the prior art, which not only facilitates and secures the workpiece clamping, but also saves labor and is fast. 2. When the utility model is operated, it can be operated by moving the handle switch, which not only reduces the labor intensity of workers, but also fixes the processed workpiece firmly and reliably, greatly improving product quality and production efficiency. The utility model has the advantages of simple structure and convenient operation, and can be widely used in the clamping process of various workpieces to be processed, especially in the clamping process of the rough milling gap of the accessory guide block of the diesel locomotive.

Description of drawings

Fig. 1 is a structural representation of the utility model

Fig. 2 is a schematic diagram of the utility model air valve control device

Fig. 3 is a schematic diagram of the utility model pressurized oil cylinder of the utility model

Fig. 4 is a schematic diagram of the working cylinder of the utility model

Fig. 5 is a schematic diagram of the guide block positioning device of the present invention

Fig. 6 is a schematic diagram of the clamping mechanism of the guide block of the present invention

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the utility model is described in detail.

As shown in Figure 1, the utility model comprises a damper control device 1, a booster cylinder 2 is connected at one end of the damper control device 1, and a working cylinder 3 is connected with the other end of the booster cylinder 2 through an oil pipe, and the working cylinder The output end of 3 is connected to the moving end of a workpiece clamping mechanism 4 .

As shown in Figures 1 and 2, the damper control device 1 of the present utility model includes: a damper body 101, a damper core 102 is arranged inside the damper body 101, and a handle switch is arranged at one end of the damper core 102 103. The end surface of the air valve body 101 is marked with three gears of 0, 1, and 2, and a high-pressure air port 104 is arranged on the circumference of the air valve body 101, and the high-pressure air port 104 is connected with a high-pressure air source. Three high-pressure air holes 105 are arranged at intervals in the circumferential direction of the air valve core 102, and the high-pressure air ports 104 on the air valve body 101 can be aligned with one of the air intakes by turning the handle switch 103 to three gears of 0, 1, and 2. The hole 105 is used to supply air to different positions of the booster cylinder 2 to realize different operation steps.

As shown in Fig. 1 and Fig. 3, the pressurized oil cylinder 2 of the present utility model comprises a cylinder body 201, and front and rear covers 202, 203 which seal the cylinder body 201 are respectively arranged at the two ends of the cylinder body 201, and the cylinder body 201 The rear cavity is provided with a cylinder piston 204, and a piston rod 205 is connected to the cylinder piston 204. A fixed oil injection piston 206 is arranged in the middle of the cylinder body 201. A high pressure oil cylinder 207 is arranged between the oil injection piston 206 and the front cover 202, and the piston rod One end of the 205 is axially provided with a central oil injection hole 208, and the circumferential direction is provided with 2 to 4 circumferential oil injection holes 209 connected to the central oil injection hole 208, and the end of the piston rod 205 provided with the central oil injection hole 208 can be inserted through the oil injection piston 206 The high-pressure oil cylinder 207 is used as the piston of the high-pressure oil cylinder 207, and the high-pressure oil cylinder 207 is filled with hydraulic oil 210. An oil piston 211 is arranged in the front cavity of the cylinder body 2, and the oil piston 211 is sleeved in the circumferential direction of the high pressure oil cylinder 207, and a return spring 212 is sleeved on the high pressure oil cylinder 207 between the oil piston 211 and the oil injection piston 206. One end of the high-pressure oil cylinder 207 close to the oil injection piston 206 is provided with 2 to 4 oil injection nozzles 213 inclined (for example, inclined at 30° but not limited thereto). 213 can be aligned with each circumferential oil hole 209 on the piston rod 205, and an oil outlet joint 214 is arranged at the other end of the high-pressure oil cylinder 207, and the oil outlet joint 214 is connected to the working oil cylinder 3 through a pipeline.

The pressurized oil cylinder 2 is provided with three ventilation slots 215 connected to the high-pressure air hole 105 on the ventilation valve control device 1, and the inlet and outlet 216, 217, 218 of each ventilation slot 215 correspond to each gear on the air valve control device 1 respectively, 0 The inlet and outlet 216 of the gear position are located on the cylinder body 201 near the oil filling piston 206 in the rear chamber, the inlet and outlet 217 of the 1st gear position are located on the cylinder body 201 between the front cover 202 and the oil piston 211, and the inlet and outlet 218 of the 2nd gear position On the cylinder block 201 between the rear cover 203 or the rear cover 203 and the cylinder piston 204, an oil nozzle 219 connected to the oil source is also arranged on the cylinder body 201 between the oil injection piston 206 and the oil piston 211, through which the oil nozzle 219 can be used to Hydraulic oil is filled between the oil piston 211 and the oil injection piston 206 .

As shown in Fig. 1 and Fig. 4, the working oil cylinder 3 of the present utility model comprises an oil cylinder body 301 fixed on the workbench, and a piston 302 is arranged in the oil cylinder body 301, and the piston 302 is connected with a piston rod 303, and on the piston rod 303 A spring 304 is sleeved, and one end of the oil cylinder body 301 is provided with an oil inlet joint 305, and the other end of the joint 305 is connected to the oil outlet joint 214 on the high-pressure oil cylinder 207 through the oil delivery pipe 306, and the oil hole 307 in the center of the joint 305 is connected to the oil cylinder body 301 Inside.

As shown in Fig. 1 and Fig. 5, the workpiece clamping mechanism 4 of the present utility model includes a clamping body 401 fixed on the workbench, and two cylindrical guide blocks that need to be milled notches are vertically inserted in the work piece 402 as the workpiece to be processed. platform, and lean against the two arc-shaped positioning grooves 403 of the card body 401. Fixedly connect a bolt rod 405 on a force plate 404, after the bolt rod 405 passes through the chuck body 401, pass through a pressure plate 406, and screw on the bolt rod 405 with a nut 407, to clamp the two workpieces 402 . An inclined iron 408 is arranged on one side of the card body 401. The bottom surface of the inclined iron 408 is wedge-shaped. The inclined iron 408 is inserted between the force plate 404 and the card body 401. The other end of the inclined iron 408 is connected to the piston rod of the working cylinder 3. 303, a roller 409 is provided at the contact position between the force plate 404 and the inclined iron 408 to reduce friction.

In the above-described embodiment, the positioning device 5 of the workpiece 402 on the workbench can adopt various structural methods, as shown in Figure 6, for example, it includes a base 501, a positioning column 502 is connected to the base 501, and in the positioning column 502 A section of spring 503 is provided, and a positioning pin 504 is provided on the top of spring 503 . The bottom of the workpiece 402 is provided with a positioning hole (not shown in the figure), and the workpiece 402 is vertically inserted into the positioning column 502 and supported by the positioning pin 504 .

In each of the above-mentioned embodiments, on the inlet and outlet ports 216, 217, and 218 provided on the cylinder body 201 of the pressurized oil cylinder 2, a filter (not shown) can be connected respectively to prevent impurities in the pressurized air source from entering In the cylinder body 2, the filter can adopt various structures in the prior art.

When the utility model is used, the following operating steps are included (as shown in Figures 1 to 6):

1. Position the two workpieces 402 vertically on the two positioning devices 5 respectively, and align them with the two arc-shaped positioning grooves 403 of the clamping body 401, and pass the bolt rod 405 on the force plate 404 through the clamping body 401 And the pressing plate 406, and the inclined iron is inserted between the force plate 404 and the card body 401, and then fixed with the nut 406;

2. Move the handle switch 103, so that the air valve control device 1 enters the 1st gear from the 0 gear in the original state, so that the high-pressure gas entering from the high-pressure air port 104 passes through the 1st gear high-pressure air hole 105, and passes through the ventilation groove 215 from the inlet and outlet. The air port 218 enters the cylinder body 201, and the high-pressure gas pushes the oil piston 211 to move backward, squeezing the hydraulic oil arranged between the oil piston 211 and the oil injection piston 206. As the oil pressure increases, the high-pressure oil flows from the inclined oil injection nozzle 213 through the circumference. Enter the high-pressure oil cylinder 207 into the oil injection hole 208 and the center oil injection hole 209, and the hydraulic oil 209 is pressed to fill the high-pressure oil cylinder, so as to prepare for the workpiece clamping mechanism 4;

3. Move the handle switch 103, so that the air valve control device 1 enters the second gear from the first gear, so that the high-pressure gas entering from the high-pressure air port 104 enters the cylinder body through the high-pressure air hole 105 of the second gear, through the ventilation groove 215, and from the air inlet and outlet 217 201. The high-pressure gas pushes the cylinder piston 204 to move forward. At the same time, the piston rod 205 connected to the cylinder piston 204 squeezes the hydraulic oil in the high-pressure cylinder 207. The hydraulic oil enters the working cylinder 3 through the oil pipe 306. In the process of converting into hydraulic energy, the high-pressure oil pushes the piston 302 to move forward, and the piston rod 303 connected to the piston 302 drives the oblique iron 408 of the workpiece clamping mechanism 4 to move forward along the roller 409, thereby driving the force plate 404 to pull The bolt rod 405 makes the clamp body 401 fasten the two workpieces 402 without any loosening;

4. After the processed workpiece 402 is processed, move the handle switch 103 to return the air valve control device 1 from the 2nd gear to the 0th gear. Enter, enter the cylinder body 201 from the air inlet and outlet 216 through the ventilation groove 215, the high-pressure gas returns the cylinder piston 204 to its original position, and at the same time the spring on the high-pressure oil cylinder 207 pushes the oil piston 211 to reset, the working oil cylinder 3 is unloaded, and the inclined iron 408 is pressed by the piston rod 303 Pulling back, the inclined iron 48 and the roller 409 slide relatively, thereby driving the force plate 404 and the bolt rod 405 to return to their original positions, so that the bolt rod 405 and the clamp body 401 are unloaded, the nut 407 is loosened, and the two workpieces 402 are It can be removed and one working cycle is completed.

Can find out by above embodiment and the operating process of the present utility model, the utility model is that the high-pressure air source is sent into pressurized oil cylinder 2 through air valve control device 1, pushes two cylinder pistons of front and back cavity (wherein oil injection piston 211 is also Pneumatic piston) movement, and then drive the piston movement of the high-pressure oil cylinder, convert the gas energy into hydraulic energy, drive the working oil cylinder 3 to work, push the wedge surface clamping action of the inclined iron 408 of the workpiece clamping mechanism 4 through the hydraulic pressure, and drive the afterburner plate 404 pulls the bolt rod 405 to realize the inventive purpose of the two workpieces 402 clamped by the clamping body 401 .

Claims (10)

1, a kind of cramping arrangement of guide block rough milling gap is characterized in that: it comprises an air-valve control device, a pressurizing cylinder, an operating cylinder and a workpiece clamping mechanism;

Described air-valve control device comprises an air-valve body and a wind spool by the control of handgrip switch, and the high pressure admission mouth of a connection source of the gas is set on the described air-valve body, and described wind spool circumferentially is arranged at intervals with three high pressure admission holes that can be communicated with described high pressure admission mouth;

Described pressurizing cylinder is arranged on a side of described air-valve control device, described pressurizing cylinder comprises a cylinder body and is arranged on the forward and backward lid at described cylinder body two ends, the one oiling piston that is divided into front/back cavity is set in the described cylinder body, an one oily piston and a cylinder piston are set respectively in described front/back cavity, an air inlet/outlet that is connected a high pressure admission hole on the described air-valve control device by air channel is set respectively between described oily piston and described protecgulum, between described oiling piston and the cylinder piston and between described cylinder piston and the described bonnet; One high-voltage oil cylinder that passes described oily piston is set between described protecgulum and the described oiling piston, an and sheathed back-moving spring on the described high-voltage oil cylinder between described oily piston and the described oiling piston, the piston rod that connects described cylinder piston is plugged in the described high-voltage oil cylinder as the hydraulic oil piston, described oiling piston is provided with the inclination pump nozzle, and the described pump nozzle that is obliquely installed is communicated with the circumferential and axial oil filler point on the described piston rod;

Described operating cylinder comprises a cylinder body, and a piston is set in the described cylinder body, and the piston rod of described cylinder body is stretched out in described piston connection one, and the upper cover of piston rod in the described cylinder body is established a spring; The fuel inlet fitting of described operating cylinder connects the delivery connection of described high-voltage oil cylinder by oil pipe;

Described workpiece clamping mechanism comprises a fixture body, it is provided with the workpiece locating slot, described fixture body one side is provided with a gusset, the workpiece opposite side of establishing at described workpiece locating slot card is provided with a pressing plate, on described gusset, fixture body and pressing plate, wear a shank of bolt, and, between described fixture body and described gusset, plugging an end of a wedge at described pressing plate outside connection one nut, the other end of described wedge connects the piston rod of described operating cylinder.

2, a kind of cramping arrangement of guide block rough milling gap as claimed in claim 1 is characterized in that: one end is provided with a roller at described gusset top, and the top of described roller is located in the wedge shape bottom surface of described wedge.

3, a kind of cramping arrangement of guide block rough milling gap as claimed in claim 1, it is characterized in that: with the circumferential corresponding sign in three high pressure admission holes of described wind spool 0 grade, 1 grade and 2 grades of three gears are arranged on the air-valve body of described air-valve control device, described 0 gear is communicated with the air inlet/outlet between described cylinder piston and the oiling piston, described 1 gear connects the air inlet/outlet between described protecgulum and the described oily piston, and described 2 gears connect the air inlet/outlet between described bonnet and the described cylinder piston.

4, a kind of cramping arrangement of guide block rough milling gap as claimed in claim 2, it is characterized in that: with the circumferential corresponding sign in three high pressure admission holes of described wind spool 0 grade, 1 grade and 2 grades of three gears are arranged on the air-valve body of described air-valve control device, described 0 gear is communicated with the air inlet/outlet between described cylinder piston and the oiling piston, described 1 gear connects the air inlet/outlet between described protecgulum and the described oily piston, and described 2 gears connect the air inlet/outlet between described bonnet and the described cylinder piston.

5, as claim 1 or 2 or 3 or 4 described a kind of cramping arrangement of guide block rough milling gap, it is characterized in that: the angle of inclination of the inclination pump nozzle that is provided with on the described oiling piston is 30 °.

6, as claim 1 or 2 or 3 or 4 described a kind of cramping arrangement of guide block rough milling gap, it is characterized in that: the workbench of described workpiece location is provided with positioner, each positioner comprises a base, on described base, connect a reference column, one section spring is set in described reference column, one alignment pin is set at described spring top.

7, a kind of cramping arrangement of guide block rough milling gap as claimed in claim 5, it is characterized in that: the workbench of described workpiece location is provided with positioner, each positioner comprises a base, on described base, connect a reference column, one section spring is set in described reference column, one alignment pin is set at described spring top.

8, as claim 1 or 2 or 3 or 4 or 7 described a kind of cramping arrangement of guide block rough milling gap, it is characterized in that: on three turnover gas that are provided with on the described cylinder body, be connected with filter respectively.

9, a kind of cramping arrangement of guide block rough milling gap as claimed in claim 5 is characterized in that: be connected with filter respectively on three turnover gas that are provided with on the described cylinder body.

10, a kind of cramping arrangement of guide block rough milling gap as claimed in claim 6 is characterized in that: be connected with filter respectively on three turnover gas that are provided with on the described cylinder body.

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