Key pulling equipment with adjustable key groove depth

Abstract

The utility model relates to key groove depth-adjustable key broaching equipment which comprises a broaching machine, a touch screen, a controller and a linear displacement sensor, and a workpiece clamping device, a broach and a first oil cylinder are arranged on the broaching machine; a workpiece is mounted on the workpiece clamping device; the broach is located in a machining area of the machine tool, installed in the axial direction of a workpiece and located on the side, close to the ground, of a to-be-machined part of the workpiece. The linear displacement sensor is installed on the first oil cylinder, and the touch screen is installed on the broaching machine. Compared with the prior art, the stroke of the broach is detected through the linear displacement sensor, the depth of the key groove is determined by the stroke of the broach, and the depth of the key groove is controllable; the linear displacement sensor does not influence the operation of the broach, and can realize the adjustment of the depth of key grooves on a shaft and in a hole; the workpiece detection sensor can detect whether the workpiece is installed in place or not in real time; and the proximity switch can be switched on and off when the workpiece clamping device moves, so that positioning of the workpiece and the broach during machining is realized, and the like.

Description

Technical Field

[0001] The utility model relates to keyway processing, in particular to a key pulling device with adjustable keyway depth. Background Art

[0002] A keyway is a groove machined on a shaft or in a hole that matches a key and is used to install the key to transmit torque. Broaching is a common method for machining keyways. Broaching can machine deeper, longer, and smaller keyways. In addition, it can ensure high-precision machining and surface quality. However, at present, each key pulling requires manual tool loading and unloading, the clamping and loosening of the workpiece is also manual, the key pulling depth is based on experience, and the key pulling efficiency is low.

[0003] After searching, the authorization announcement number CN216758394U discloses a key pulling device with controllable keyway depth, which specifically discloses: the output end of the machine tool is respectively fixedly installed with an electric cylinder and an upper slide plate, the output end of the electric cylinder is fixedly installed with an adapter plate, the top of the adapter plate is fixedly installed with a lower sleeve, the surface of the upper slide plate is slidably connected to the lower sleeve, one end of the adapter plate is fixedly installed with a broach by bolts, the surface of the lower sleeve is respectively provided with a second slide groove and a first slide groove, the inner wall of the second slide groove is slidably connected with a slider, one end of the slider is fixedly connected to the upper slide, and the other end of the slider is fixedly connected to the first pointer.

[0004] However, the prior art controls the depth of the keyway by indicating the distance between the broach and the shaft with a scale, and is only applicable to the processing of the keyway on the shaft. Therefore, how to design a key-pulling device that can control the depth of the keyway on the shaft and the depth of the keyway in the hole is a technical problem that needs to be solved. Utility Model Content

[0005] The purpose of the utility model is to provide a key pulling device with adjustable keyway depth in order to overcome the defect of the prior art that it is only applicable to keyway processing on a shaft.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] According to one aspect of the utility model, a key pulling device with adjustable keyway depth is provided, which is used for processing keyways on a workpiece, and the key pulling device includes a broaching machine, on which a workpiece clamping device, a broaching tool and a first oil cylinder are provided, and the key pulling device also includes a touch screen, a controller and a linear displacement sensor which are electrically connected in sequence; the workpiece is mounted on the workpiece clamping device; the broaching tool is located in the processing area of ​​the machine tool, is installed along the axial direction of the workpiece, is located on the side of the workpiece to be processed close to the ground, and one end is connected to the first oil cylinder, and the first oil cylinder is electrically connected to the controller; the linear displacement sensor is installed on the first oil cylinder, and the touch screen is installed at one end of the broaching machine.

[0008] As a preferred technical solution, the first oil cylinder comprises an oil cylinder body, a first support plate and a second support plate; one end of the output end of the oil cylinder body is fixedly connected to the first support plate, and the other end is fixedly connected to the second support plate and passes through the second support plate to be connected to one end of the broach; the linear displacement sensor is installed on the first support plate and the second support plate.

[0009] As a preferred technical solution, the key pulling device further includes a workpiece detection sensor, which is electrically connected to the controller and installed on one side of the workpiece.

[0010] As a preferred technical solution, the distance between the starting position of the processing on the broach and the highest point of the broach is the broach stroke. Among them, p is the broach tooth pitch, a f is the lift of the broach tooth and t is the keyway depth.

[0011] As a preferred technical solution, before processing, there is a gap between the highest point of the broach and the workpiece; when processing starts, the starting position of the broach contacts the workpiece.

[0012] As a preferred technical solution, the workpiece clamping device is located in the processing area of ​​the machine tool.

[0013] As a preferred technical solution, the key pulling device also includes a proximity switch, which is electrically connected to the controller and installed in the processing area of ​​the machine tool, located on one side of the movement direction of the workpiece clamping device; the workpiece clamping device does not contact the proximity switch when clamping, and contacts the proximity switch when releasing the workpiece.

[0014] As a preferred technical solution, the broaching machine is further provided with a second oil cylinder, the workpiece clamping device is connected to the second oil cylinder, and the second oil cylinder is electrically connected to the controller.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1) The utility model detects the stroke of the broach through a linear displacement sensor, and the stroke of the broach determines the depth of the keyway, thereby realizing controllable keyway depth; the linear displacement sensor is installed at one end of the broach, does not interfere with the broach, does not affect the operation of the broach, and can realize the adjustment of the keyway depth on the shaft and the keyway depth in the hole;

[0017] 2) The workpiece detection sensor of the utility model is installed on one side of the workpiece, and can detect in real time whether the workpiece is installed in place; the proximity switch is installed on one side of the movement direction of the workpiece clamping device, and can realize the switch when the workpiece clamping device moves, control the clamping and loosening of the workpiece clamping device, and realize the positioning of the workpiece and the broach during processing;

[0018] 3) After the broaching tool of the utility model is finished, it continues to move, and a workpiece disassembly gap is formed between the broaching tool and the workpiece, so as to facilitate the disassembly of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a key pulling device with adjustable keyway depth from the first perspective of the utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of a key pulling device with adjustable keyway depth from a second viewing angle of the utility model;

[0021] The numbers in the figure show:

[0022] 1. Broaching machine, 10. Workpiece clamping device, 11. Broach, 12. First oil cylinder, 120. Oil cylinder body, 121. First support plate, 122. Second support plate, 2. Touch screen, 3. Linear displacement sensor, 4. Workpiece detection sensor, 5. Proximity switch. DETAILED DESCRIPTION

[0023] 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 part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0024] like Figure 1 As shown, the utility model provides a key pulling device with adjustable keyway depth, including a pulling machine 1, a touch screen 2, a controller, a linear displacement sensor 3, a workpiece detection sensor 4 and a proximity switch 5.

[0025] like Figure 2 As shown, the broaching machine 1 includes a workpiece clamping device 10, a broach 11, a first oil cylinder 12 and a second oil cylinder.

[0026] The work clamping device 10 and the broach 11 are installed in the processing area of ​​the machine tool, the workpiece is clamped by the work clamping device 10, and the keyway is processed on the surface of the workpiece by the broach 11. The work clamping device 10 is connected to the second oil cylinder, and the second oil cylinder drives the work clamping device 10 to move.

[0027] One end of the broach 11 is connected to the first oil cylinder 12, and the first oil cylinder 12 drives the broach 11 to move. The installation direction of the broach 11 is the extension direction of the keyway, and the broach 11 is located below the surface of the workpiece to be processed. Before processing, there is a certain distance between the highest point of the broach 11 and the workpiece; when processing starts, the starting position of the broach 11 contacts the workpiece. The distance between the starting position of the broach 11 and the highest point of the broach 11 is the stroke of the broach 11. Among them, p is the pitch of the broach 11, a f is the tooth lift of broach 11, and t is the keyway depth.

[0028] The first oil cylinder 12 includes an oil cylinder body 120, a first support plate 121 and a second support plate 122. One end of the output end of the oil cylinder body 120 is fixedly connected to the first support plate 121, and the other end is fixedly connected to the second support plate 122 and connected to one end of the broach 11 through the second support plate 122; the linear displacement sensor 3 is installed on the first support plate 121 and the second support plate 122. The first oil cylinder 12 is electrically connected to the controller and receives signals from the controller, and the controller controls the start and stop of the first oil cylinder 12.

[0029] The second oil cylinder is also electrically connected to the controller and receives signals from the controller, and the controller controls the start and stop of the second oil cylinder.

[0030] The touch screen 2 is electrically connected to the controller and transmits signals to the controller. The transmitted signals include depth data of the key slot to be processed.

[0031] The linear displacement sensor 3 is electrically connected to the controller and transmits the actual movement distance of the broach 11 to the controller.

[0032] The touch screen 2 is installed at one end of the machine tool to facilitate the operator to operate.

[0033] The workpiece detection sensor 4 is installed on one side of the workpiece to detect whether there is a workpiece in the processing area of ​​the machine tool. The workpiece detection sensor 4 is electrically connected to the controller and transmits a signal to the controller. The workpiece detection sensor 4 can be a photoelectric sensor to determine whether the workpiece is in place by emitting and receiving light.

[0034] The proximity switch 5 is installed in the processing area of ​​the machine tool, and is located on one side of the moving direction of the work clamping device 10. The work clamping device 10 does not contact the proximity switch 5 when clamping the workpiece, and contacts the proximity switch 5 when releasing the workpiece.

[0035] The working process of this utility model is as follows:

[0036] The workpiece is mounted on the workpiece clamping device 10, and the workpiece clamping device 10 clamps the workpiece; the keyway depth is input on the touch screen 2, and the specifications of the broach 11 are preset in the controller; the controller calculates the stroke of the broach 11 according to the keyway depth to be processed and the specifications of the broach 11, and the stroke of the broach 11 determines the movement distance that the broach 11 needs to move when the starting position of the processing on the broach 11 is aligned with the workpiece; the controller controls the first oil cylinder 12 to drive the broach 11 to start moving, and the linear displacement sensor 3 detects the actual distance of the movement of the broach 11 and feeds it back to the controller. When the actual distance is equal to the calculated movement distance, When the workpiece is released, the first oil cylinder 12 stops moving; the second oil cylinder drives the workpiece clamping device 10 to loosen, and the workpiece falls due to gravity and contacts the broach 11. At the same time, the workpiece clamping device 10 touches the proximity switch 5 after being released, and the proximity switch 5 sends a signal, and the second oil cylinder drives the workpiece clamping device 10 to clamp the workpiece that has contacted the broach 11; the first oil cylinder 12 drives the broach 11 to start working and perform keyway processing; after the processing is completed, the broach 11 continues to move until there is a certain distance between it and the workpiece, forming a workpiece disassembly gap, which is convenient for disassembly of the workpiece after processing is completed; the broach 11 is reset after the workpiece is disassembled.

[0037] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A key pulling device with adjustable keyway depth, used for machining a keyway on a workpiece, the key pulling device comprising a broaching machine (1), characterized in that: The broaching machine (1) is provided with a workpiece clamping device (10), a broaching tool (11) and a first oil cylinder (12), and the broaching device further comprises a touch screen (2), a controller and a linear displacement sensor (3) which are electrically connected in sequence; the workpiece is mounted on the workpiece clamping device (10); the broaching tool (11) is located in the processing area of ​​the machine tool, is installed along the axial direction of the workpiece, is located on the side of the workpiece to be processed close to the ground, and one end is connected to the first oil cylinder (12), and the first oil cylinder (12) is electrically connected to the controller; the linear displacement sensor (3) is installed on the first oil cylinder (12), and the touch screen (2) is installed at one end of the broaching machine (1).

2. A key pulling device with adjustable keyway depth according to claim 1, characterized in that: The first oil cylinder (12) comprises an oil cylinder body (120), a first support plate (121) and a second support plate (122); one end of the output end of the oil cylinder body (120) is fixedly connected to the first support plate (121), and the other end is fixedly connected to the second support plate (122) and passes through the second support plate (122) to be connected to one end of the broach (11); the linear displacement sensor (3) is mounted on the first support plate (121) and the second support plate (122).

3. A key pulling device with adjustable keyway depth according to claim 1, characterized in that: The key pulling device also includes a workpiece detection sensor (4), which is electrically connected to the controller and is installed on one side of the workpiece.

4. A key pulling device with adjustable keyway depth according to claim 1, characterized in that: The distance between the starting position of the processing on the broach (11) and the highest point of the broach (11) is the stroke of the broach (11). Where p is the tooth pitch of the broach (11), a f is the tooth lift of the broach (11), and t is the keyway depth.

5. A key pulling device with adjustable keyway depth according to claim 4, characterized in that: Before processing, there is a gap between the highest point of the broach (11) and the workpiece; when processing starts, the processing starting position of the broach (11) contacts the workpiece.

6. The key pulling device with adjustable keyway depth according to claim 1, characterized in that: The workpiece clamping device (10) is located in the processing area of ​​the machine tool.

7. The key pulling device with adjustable keyway depth according to claim 1, characterized in that: The key pulling device also includes a proximity switch (5), which is electrically connected to the controller and installed in the processing area of ​​the machine tool, located on one side of the moving direction of the workpiece clamping device (10); the workpiece clamping device (10) does not contact the proximity switch (5) when clamping the workpiece, and contacts the proximity switch (5) when releasing the workpiece.

8. The key pulling device with adjustable keyway depth according to claim 1, characterized in that: The broaching machine (1) is also provided with a second oil cylinder, the workpiece clamping device (10) is connected to the second oil cylinder, and the second oil cylinder is electrically connected to the controller.

Images