CN106239280B - A kind of food knife blade polishing process - Google Patents

Abstract

The invention discloses a method for grinding a food knife edge, which belongs to the field of knife edge processing equipment and solves the problems of poor processing effect, low sharpness, low service life and low processing efficiency of the existing food knife edge. The device of the present invention includes a workbench, a grinding wheel motor and a grinding wheel, and also includes a cutterhead seat; the grinding wheel motor is vertically arranged on the workbench; the grinding wheel is arranged at the lower end of the grinding wheel motor; the cutterhead seat is arranged on one side of the grinding wheel on the workbench, There is a fine-tuning disc on the cutterhead seat; a fine-tuning shaft is fixed in the center of the fine-tuning disc, and the fine-tuning shaft is threadedly connected with the rotating bushing arranged on the cutterhead seat; a locking device is arranged at the connection between the fine-tuning shaft and the rotating bushing; the rotating shaft The sleeve and the cutter head seat are connected by bearings. The invention can improve processing efficiency, reduce potential safety hazards, save manpower, and more importantly, can effectively improve the processing quality of food knife blades at the same time, improve the sharpness of processed food knives, and prolong the service life of food knives.

Description

A kind of food knife blade grinding method

This application is a divisional application of the invention application titled "A Food Knife Edge Grinding Device and Grinding Method", the application number is 2016100255673, and the filing date is January 14, 2016.

technical field

The invention belongs to the field of blade processing tooling, and in particular relates to a method for grinding a food knife blade.

Background technique

Food knives are non-toxic and harmless tool knives with certain anti-rust properties for cutting food. Existing food knives are generally made of stainless steel and are widely used in the food processing industry; food knives have different shapes, including those shown in Figure 1. As shown in the square food knife, the blade of this square food knife is arc-shaped with a certain radian, and also includes a fan-shaped food knife. The blade of the fan-shaped food knife is arranged at one end, and is generally fan-shaped with a certain radian. Whether it is a square food knife or a fan-shaped food knife, the most important process in the processing process is to polish the blade to ensure the basic function of the food knife - cutting. The traditional food knife edge grinding method is that the operator manually sharpens the blade on the grinder, using a flat grinding wheel, the supporting motor power is 40W, the voltage is 380V, and the speed RPM is 1440r/min. This grinding method is difficult to control the width of the blade during operation. , the basic control is within the range of tolerance ±1.00mm, and the smoothness of the polished blade is not enough, and there is even a phenomenon that the blade part is scorched, which leads to insufficient sharpness of the blade and reduces the service life of the blade; in addition, this kind of manual grinding The operating efficiency is extremely low. Even with experienced operators, this method can only polish 2 pieces of food blades per hour, and the flatness of the grinding wheel must be re-dressed every three hours, and the wear of the grinding wheel will also increase. , reducing work efficiency and increasing production costs.

Chinese patent application number 201510603620.9, the patent application document published on December 23, 2015, discloses a blade grinding device, which consists of a chassis, a lighting lamp, a working window, a grinding wheel, a fixing fixture, an ash discharge bucket, an inspection door, and a filter , compressed air interface, fan and air outlet, the fan is set inside the case, the filter is set inside the case, below the fan, the air outlet is set on the top of the case, the compressed air interface is set on the back of the case, and the maintenance door It is set on the back of the case, below the compressed air interface, the ash discharge bucket is set on the side of the case, the work window is set on the front of the case, the grinding wheel is set in the work window, the lighting is set on the top of the work window, and the fixing fixture is set on The front of the working window is at the same height as the central axis of the grinding wheel. The blade grinding device of the invention can quickly grind the blade, and the waste materials in the grinding process can be collected and processed in a centralized manner, ensuring a clean working environment. However, the technical solution disclosed in the application for this invention still needs to manually operate the blade for grinding, which has low efficiency, great potential safety hazards, and low grinding quality.

Chinese patent application number 201310658297.6, the patent application document published on March 26, 2014, discloses a paper cutter blade grinder to solve the problem of manual grinding amplitude and frequency instability in the prior art, including the frame, It also includes a sector gear rotatably connected with the frame, a transmission tooth meshed with the sector gear, a driven shaft rotatably connected with the transmission gear and a cam plate fixed on the driven shaft. One end and the middle of the driven shaft and the frame pass through Bearing connection, the other end of the driven shaft is threadedly connected to the swing arm, the transmission teeth include the left half and the right half, and the end faces of the left half and the right half are provided with inverted tapered protrusions and inverted tapered slots, The swing arm is connected with a workbench, the workbench is connected with a whetstone, and the frame is also provided with a first limit switch and a second limit switch near the cam plate. Although the technical solution disclosed in the invention solves the problems of grinding range and frequency, the grinding efficiency is still very low by manual operation, which seriously restricts the development of blade production technology and hinders the expansion of production for enterprises.

Contents of the invention

1. Problems to be solved

Aiming at the problems of poor processing effect, low sharpness, low service life, and low processing efficiency of the existing food knife blade, the present invention provides a food knife edge grinding method, which can improve processing efficiency, reduce safety hazards, save manpower, and be more efficient. What is important is that the processing quality of the food knife blade can be effectively improved at the same time, the sharpness of the processed food knife can be improved, and the service life of the food knife can be prolonged.

2. Technical solution

In order to solve the above problems, the present invention adopts the following technical solutions.

A food knife edge grinding device, including a workbench, a grinding wheel motor and a grinding wheel, and a cutter head seat; the grinding wheel motor is vertically arranged on the workbench; the grinding wheel is arranged at the lower end of the grinding wheel motor; the The cutter head seat is arranged on one side of the grinding wheel on the workbench, and a fine-tuning disc is arranged on the cutter head seat; threaded connection; the connection between the fine-tuning shaft and the rotating shaft sleeve is provided with a locking device; the rotating shaft sleeve and the cutter head seat are connected through bearings.

Preferably, a first scale line is provided on the side wall of the trimming disc; and a second scale line corresponding to the first scale line is provided on the upper surface of the cutter head seat.

Preferably, a column is arranged on the workbench; a rocker arm is arranged transversely on the column; and the grinding wheel motor is arranged at the end of the rocker arm.

Preferably, an index plate capable of adjusting the swing of the rocker arm is provided between the rocker arm and the column.

Preferably, it also includes a stroke motor and a stroke reducer arranged on one side of the workbench; the stroke motor is connected to the stroke reducer; the rotating sleeve passes through the cutterhead seat and extends into the workbench, and the rotating sleeve One end protruding into the workbench is connected with the stroke reducer.

Preferably, it also includes a knife feeding power device; the stroke motor and the stroke reducer are arranged on the track; the cutter head seat and the worktable are connected by slide rails; the cutter head seat, fine-tuning disc, The stroke motor and the stroke reducer are connected with the feed power device as a whole.

A method for grinding a food knife edge, comprising the following steps:

1) Adjust the grinding wheel of the above-mentioned food knife edge grinding device to the upper side of the fine-tuning disc, and fix it;

2) Rotate the fine-tuning dial to make the fine-tuning shaft move around the rotating bushing, adjust the cutting depth, and lock the relative position of the fine-tuning shaft and the rotating bushing;

3) Place the food knife to be polished on the fine-tuning plate adjusted in step 2), so that the head side of the food knife blade to be polished is in contact with the grinding wheel to realize knife alignment and fixation;

4) Start the grinding wheel motor to make the grinding wheel rotate;

5) Keep the grinding wheel idling in step 4) for 1 to 2 minutes, and then start the stroke motor and the feed power device at the same time, so that the stroke reducer drives the rotating shaft sleeve to rotate, and then drives the fine-tuning disc and the food to be polished fixed on the fine-tuning disc The knife makes the first rotary motion, and the knife feed power device drives the cutter head seat, fine-tuning disc, travel motor and travel reducer as a whole to make the second feed motion towards the grinding wheel. The combination of the first rotary motion and the second feed motion Make the food knife to be polished feed into the grinding wheel along the track of the blade;

6) Keep the working state in step 5) until the tail side of the food knife blade is separated from the grinding wheel, stop the stroke motor and the knife feeding power device, stop the grinding wheel motor, adjust the grinding wheel away from the fine-tuning disc, take out the food knife, and the grinding is completed.

Preferably, in the step 1), by adjusting the index plate, the rocker arm is rotated around the column, and the grinding wheel is driven to be fixed above the side of the fine-tuning plate.

Preferably, in the step 2), the adjustment of the knife penetration depth is realized by comparing the positions of the first scale line and the second scale line.

Preferably, in the step 5) during the feeding process, the cooling liquid is sprayed to the contact between the grinding wheel and the food knife edge.

3. Beneficial effects

Compared with the prior art, the beneficial effects of the present invention are:

(1) In the present invention, a cutter head seat is set on the workbench, and a fine-tuning disc is set on the cutter head seat, which can pre-adjust the eating depth of the food knife to be polished before the grinding process. Compared with the traditional manual feeding knife, the precision is higher , better stability, safer and more efficient, so it can improve the processing quality of the food blade, so that the width of the processed blade can be controlled within the range of ±0.10mm, which can improve the sharpness of the processed food knife and prolong the service life of the food knife , At the same time, the production efficiency is improved, from the traditional manual grinding of 2 pieces per day to 6 pieces per day, the processing efficiency is increased by 3 times, and the equipment failure rate is reduced, which reduces the equipment maintenance cost;

(2) The side wall of the fine-tuning disc of the present invention is provided with a first scale line, and the upper surface of the cutter head seat is provided with a second scale line corresponding to the first scale line, so that the adjustment of the fine-tuning disc is more intuitive and accurate, thereby improving Improve the processing accuracy, but also reduce the difficulty of operation;

(3) The present invention arranges column on the workbench, rocker arm is arranged on the column, grinding wheel motor is arranged on the rocker arm, makes grinding wheel can be adjusted by the rotation of column, picks and places conveniently food knife workpiece, also can be according to waiting time at the same time Grinding the angle of the food knife blade adjusts the grinding angle of the emery wheel in advance to realize the multifunctionality of the device of the present invention;

(4) In the present invention, an indexing plate that can adjust the swing amplitude of the rocker arm is provided between the rocker arm and the column, so that the adjustment of the swing amplitude of the rocker arm is more intuitive and accurate, the processing accuracy of the equipment is improved, and the operation of the equipment is also reduced. Difficulty, not limited to experienced operators, reduces labor costs;

(5) The fine-tuning disc of the present invention is driven by a stroke motor and a stroke reducer arranged on one side of the workbench to realize automation, further reduce labor intensity, and improve machining accuracy. The rotating shaft sleeve is connected with the stroke reducer and driven by the stroke reducer It can drive the fine-tuning plate and the food knife fixed on the fine-tuning plate to perform the first rotational movement;

(6) The present invention also includes a power device for feeding the knife. The stroke motor and the stroke reducer are arranged on the track, and the cutter head seat and the worktable are connected by slide rails. A whole is connected with the knife-feeding power device, so that the knife-feeding power device can drive the cutterhead seat, fine-tuning disc, stroke motor and stroke reducer to move in one direction as a whole, so as to realize the second knife-feeding movement of the food knife. The feed movement and the first rotation movement cooperate to realize the food knife can feed along the blade track when grinding, which improves the grinding precision and greatly improves the processing efficiency;

(7) The method of the present invention can realize the intelligent automation of food knife edge grinding, improve the processing efficiency, and can precisely adjust the grinding parameters at the same time, greatly improving the processing accuracy, making the food knife edge produced and processed sharper, improving the quality and prolonging the processing time. service life of food knives;

(8) Keep emery wheel idling for 1 to 2 minutes after knife setting in the inventive method, can determine whether to continue to feed and polish step by observing whether the depth of knife setting is accurate, avoiding one-time knife feeding and making the food knife scrapped;

(9) In the method of the present invention, cooling liquid is sprayed during the knife feeding process, which can effectively prevent the food knife blade from being scorched when the temperature is too high during the machining process, and further improves the machining accuracy.

Description of drawings

Fig. 1 is a kind of structural representation of food knife;

Fig. 2 is the structural representation of a kind of food knife edge polishing device of the present invention;

Fig. 3 is a coordinate diagram for controlling the movement of the food blade when the present invention processes the food knife.

In the figure: 1. Workbench; 2. Upright column; 3. Indexing plate; 4. Rocker arm; 5. Grinding wheel motor; 6. Grinding wheel; 7. Fine-tuning disc; 8. Cutter seat; 9. Inching switch; 10 , Travel motor; 11, travel reducer.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments.

Example 1

As shown in Figure 2, a food knife edge grinding device includes a worktable 1, a grinding wheel motor 5, a grinding wheel 6, a cutter head seat 8, and a knife feed power device arranged on one side of the workbench 1, a travel motor 10 and a travel deceleration device. machine 11; a column 2 is arranged on the workbench 1, a rocker arm 4 is arranged horizontally on the column 2, and an indexing plate 3 which can adjust the swing of the rocking arm 4 is arranged between the rocking arm 4 and the column 2, and the indexing plate 3 and the The column 2 is connected by a worm and gear mechanism. When the index plate 3 is rotated, the horizontal rotation of the index plate is converted into the vertical rotation of the column, so that the column rotates and the swing of the rocker arm is realized; the grinding wheel motor 5 is set At the end of the rocker arm 4, the grinding wheel 6 is arranged at the lower end of the grinding wheel motor 5; the cutter head seat 8 is arranged on one side of the grinding wheel 6 on the workbench 1, and the cutter head seat 8 is connected with the workbench 1 by a slide rail, and the cutter head The disc seat 8 is provided with a fine-tuning disc 7, and the side wall of the fine-tuning disc 7 is provided with a first scale line, and the upper surface of the cutter head seat 8 is provided with a second scale line corresponding to the first scale line; the center of the fine-tuning disc 7 is fixed. A fine-tuning shaft is provided, and the fine-tuning shaft is threadedly connected with the rotating shaft sleeve arranged on the cutter head seat 8, and a locking device is arranged at the joint between the fine-tuning shaft and the rotating shaft sleeve, and the rotating shaft sleeve and the cutter head seat 8 are connected through a bearing; the stroke motor 10 is connected with the stroke reducer 11, and the stroke motor 10 and the stroke reducer 11 are arranged on the track; the rotating bushing passes through the cutter head seat 8 and extends into the workbench 1, and the end of the rotating bushing extending into the workbench 1 is in line with the stroke Speed reducer 11 links to each other by worm and gear mechanism; Feed power unit comprises feed motor and feed speed reducer, and cutter head seat 8, fine-tuning disc 7, travel motor 10 and stroke speed reducer 11 are connected with feed power unit as a whole.

According to the shape of the blade of different food knives and different process requirements, it is sometimes necessary to control the inching operation of the knife feeding power device and the stroke motor 10, so the present embodiment is also provided with an inching switch 9 on the side wall of the workbench 1; Motion switch 9 links to each other with feed motor and stroke motor 10, realizes in order to control and realizes that the food knife to be polished is fed in a jog.

Compared with traditional manual knife feeding, the present invention has higher precision, better stability, and is safer and more efficient. Therefore, it can improve the processing quality of food blades, so that the width of processed blades can be controlled within the range of ±0.10mm, and can Improve the sharpness of processed food knives, prolong the service life of food knives, and improve production efficiency at the same time. From traditional manual grinding of 2 pieces per day to 6 pieces per day, the processing efficiency has increased by 3 times, and the equipment failure rate has decreased, reducing the equipment cost. maintenance costs.

The present embodiment takes the food knife as shown in Figure 1 as the description of the processing object. The blade width of the food knife is 15.00mm, the vertical distance from the top of the blade to the tail end of the blade H=110mm, the radius of the arc R=150mm, and the arc of the blade is 15.00 mm. The length is 155.00mm, and the cutter body width W=105mm.

A method for grinding a food knife edge, comprising the following steps:

1) Adjust the index plate 3 of the above-mentioned food knife edge grinding device, so that the rocker arm 4 rotates around the column 2, and drives the grinding wheel 6 to fix on the upper side of the fine-tuning plate 7;

2) Rotate the fine-tuning dial 7 according to the position of the first scale line and the second scale line, so that the fine-tuning shaft moves around the rotating bushing, adjust the depth of the knife, and lock the relative position of the fine-tuning shaft and the rotating bushing through the locking device;

3) Place the food knife to be polished on the fine-tuning disc 7 adjusted in step 2), so that the head side of the food knife blade to be polished contacts the grinding wheel 6 to realize knife setting and fixing;

4) Start the grinding wheel motor 5 to make the grinding wheel 6 rotate;

5) Keep the grinding wheel 6 idling in step 4) for 1 to 2 minutes, and then start the stroke motor 10 and the knife feed power device at the same time, so that the stroke reducer 11 drives the rotating shaft sleeve to rotate, and then drives the fine-tuning disc 7 and is fixed on the fine-tuning disc 7 The food knife to be polished on the table performs the first rotary motion, and the knife feed power device drives the cutter head seat 8, the fine-tuning disc 7, the travel motor 10 and the travel reducer 11 as a whole to make the second feed motion towards the grinding wheel 6, the first The combination of the rotary motion and the second feeding motion makes the food knife to be polished feed toward the grinding wheel 6 along the blade track, and at the same time, spray coolant to the contact between the grinding wheel 6 and the food knife edge;

6) Keep the working state in step 5) until the tail side of the food knife blade is separated from the grinding wheel 6, stop the stroke motor 10 and the knife feeding power device, stop the grinding wheel motor 5, adjust the grinding wheel 6 away from the fine-tuning disc 7, take out the food knife, and the grinding is completed.

In this embodiment, the power of the stroke motor 10 is 0.55W, the rated voltage is 380V, its rotating speed is 2800r/min during work, the power of the knife feed motor is 1.5W, the rated voltage is 380V, and the rotating speed during work is 1400r/min .

As shown in Figure 3, in this embodiment, the point of contact between the emery wheel 6 and the head side of the food knife blade to be polished in step 3) is used as the coordinate zero point to establish the coordinate system XOY, and the control of the food knife to be polished is controlled by setting the first rotation motion and the second feed motion. The food knife blade moves according to the following trajectory:

(Xa) ² +(Yb) ² ＝R ²

In this implementation, R=150mm, the blade width of the food knife is 15.00mm, the vertical distance H=110mm from the top of the blade to the tail end of the blade, the arc radius R=150mm, the arc length of the blade is 155.00mm, and the width of the knife body W=105mm, so Corresponding to the above-mentioned coordinate system, it is known that the point (0, 0) and point (105,-110) on the blade satisfy the above-mentioned trajectory equation, so in this embodiment, the blade of the food knife is controlled by the first rotation motion and the second feed motion according to The following trajectory movement:

(X+146.0306) ² +(Y+34.2792) ² ＝22500

The method of the present invention can realize the intelligent automation of food knife edge grinding and improve the processing efficiency. At the same time, by setting accurate grinding parameters, the movement track of the blade to be polished can be precisely controlled, the processing accuracy is greatly improved, and the food knife edge produced and processed is sharper. , the quality is improved, and the service life of the food knife is extended.

Claims (4)

1. a kind of food knife blade polishing process, comprises the following steps：

1) adjust above emery wheel (6) to fine tuning dish (7) side, it is fixed；

2) rotary fine adjustment disk (7), make fine adjustment shaft be moved around rotary sleeve, adjust the depth of cut, lock fine adjustment shaft and rotary sleeve Relative position；

3) it will be positioned over after polishing food knife on the fine tuning dish (7) after being adjusted in step 2), and make food knife blade head sides to be polished Contact, realized to knife with emery wheel (6), it is fixed；

4) start grinding wheel drive mitor (5), rotate emery wheel (6)；

5) keep step 4) medium plain emery wheel (6) to dally 1~2 minute, then start stroke motor (10) and feed power set at the same time, make Stroke gear reducer (11) drives rotary sleeve rotary motion, and then drives fine tuning dish (7) and be fixed on fine tuning dish (7) and wait to beat Mill food knife does the first rotary motion, and feed power set drive cutter chuck holder adapted (8), fine tuning dish (7), stroke motor (10) and stroke Gear reducer (11) does the second feed to emery wheel (6) direction as an entirety and moves, the first rotary motion and the second feed campaign Combination make food knife to be polished along locus of tool edge to emery wheel (6) feed；

6) keep working status to food knife blade caudal in step 5) to depart from emery wheel (6), stop stroke motor (10) and feed Power set, stop grinding wheel drive mitor (5), adjust emery wheel (6) away from fine tuning dish (7), take out food knife, polishing terminates.

A kind of 2. food knife blade polishing process according to claim 1, it is characterised in that：Pass through in the step 1) Index dial (3) is adjusted, rocking arm (4) is rotated around column (2), is driven fixed above emery wheel (6) to fine tuning dish (7) side.

A kind of 3. food knife blade polishing process according to claim 2, it is characterised in that：Pass through in the step 2) Realize the adjusting of the depth of cut in the position for compareing the first graduation mark and the second graduation mark.

A kind of 4. food knife blade polishing process according to claim 1,2 or 3, it is characterised in that：The step 5) During feed coolant is sprayed to emery wheel (6) and food knife blade contact position.